WO2014103225A1

WO2014103225A1 - Electric linear actuator and output shaft vibration-type electric device with said electric linear actuator

Info

Publication number: WO2014103225A1
Application number: PCT/JP2013/007325
Authority: WO
Inventors: 小林　昇; 森口　雅嗣
Original assignee: パナソニック株式会社
Priority date: 2012-12-27
Filing date: 2013-12-12
Publication date: 2014-07-03
Also published as: JP6152968B2; JP2014128189A

Abstract

This electric linear actuator (40) comprises a fixed block (50), an output movable block (60), a pair movable block (70), a projection-side connecting component (80), a retraction-side connecting component (90), a block coupling component (100), an output functional component (200), and a pair functional component (300). The pair functional component (300) includes a pair component main body (310) coupled to the pair movable block (70), and a pair component adjusting unit (320) formed integrally with the pair component main body (310) from the same material as the pair component main body (310). The pair component adjusting unit (320) is arranged further in the retraction direction (DXR) than the pair movable block (70).

Description

Electric linear actuator and output shaft vibration type electric apparatus having the electric linear actuator

The present invention relates to an electric linear actuator and an output shaft vibration type electric apparatus having the electric linear actuator.

Conventional electric linear actuators can be classified into three types as an example from the aspect of drive system. In the following description, three types of conventional electric linear actuators are shown as a first conventional actuator 910, a second conventional actuator 920, and a third conventional actuator 930, respectively.

FIG. 22 shows an example of the first conventional actuator 910. The first conventional actuator 910 includes a case 911, a stator 912, a mover 916, and a mover spring 917.

The case 911 houses the output shaft 918, the stator 912, the mover 916, and the mover spring 917 of the electric device. The stator 912 is fixed to the case 911. The stator 912 includes a coil 913, two permanent magnets 914, and four yokes 915. The coil 913, each permanent magnet 914, and each yoke 915 have an annular shape. The mover 916 is fixed to the output shaft 918. The mover spring 917 is disposed between the case 911 and the mover 916. The mover spring 917 applies a force acting in the axial direction of the output shaft 918 to the mover 916.

The first conventional actuator 910 reciprocates the mover 916 and the output shaft 918 by switching the direction of the current supplied to the coil 913. However, the first conventional actuator 910 generates undesirable vibration due to the inertial force of the mover 916. Note that Patent Document 1 discloses an example of a first conventional actuator 910.

The second conventional actuator 920 includes a technique for reducing undesirable vibration of the mover 916. FIG. 23 shows an example of the second conventional actuator 920. The second conventional actuator 920 is different from the first conventional actuator 910 in that it includes a weight 921, an intermediate spring 922, and a weight spring 923, and has substantially the same configuration as the first conventional actuator 910 in other points.

The weight 921 is arranged around a part of the output shaft 918. The weight 921 moves relative to the output shaft 918 in the axial direction. The intermediate spring 922 is disposed between the mover 916 and the weight 921. The intermediate spring 922 applies a force acting in the axial direction of the output shaft 918 to the mover 916 and the weight 921. The weight spring 923 is disposed between the case 911 and the weight 921. The weight spring 923 applies a force acting in the axial direction of the output shaft 918 to the weight 921.

The second conventional actuator 920 supplies the coil 913 with a current having a frequency near the natural frequency in the second vibration mode. By supplying this current to the coil 913, the second conventional actuator 920 causes the mover 916 and the weight 921 to reciprocate in opposite phases. For this reason, the undesirable vibration of the mover 916 is reduced. However, the second conventional actuator 920 is larger in size than the first conventional actuator 910 due to the presence of the weight 921. Note that Patent Document 2 discloses an example of the second conventional actuator 920.

The third conventional actuator 930 includes technology that enables miniaturization and high efficiency. FIG. 24 shows an example of the third conventional actuator 930. The third conventional actuator 930 includes an electromagnetic core block 931, two magnetic blocks 934, a block coupling component 937, a first coupling component 938, and a second coupling component 939.

The electromagnetic core block 931 is attached to the block coupling component 937. The electromagnetic core block 931 has a core 932 and a coil 933. Each magnetic block 934 is attached to a block coupling component 937. Each magnetic block 934 reciprocates in the left-right direction in FIG. The two magnetic blocks 934 are arranged in parallel along a direction (direction perpendicular to the drawing) perpendicular to the direction of reciprocal movement of each magnetic block 934. FIG. 24 shows one of the two magnetic blocks 934. The other magnetic block 934 (not shown) exists on the depth side of one magnetic block 934 in a direction perpendicular to the drawing. Each magnetic block 934 includes a permanent magnet 935 and a back yoke 936. The permanent magnet 935 faces the electromagnetic core block 931 through a gap.

The first connecting component 938 is disposed on one end side of each magnetic block 934 in the reciprocating direction of the magnetic block 934. The first connecting component 938 connects one magnetic block 934 and the other magnetic block 934 to each other. The second connecting component 939 is disposed on the other end side of each magnetic block 934 in the direction of reciprocal movement of the magnetic block 934. The second connecting component 939 connects one magnetic block 934 and the other magnetic block 934 to each other.

The third conventional actuator 930 reciprocates the two magnetic blocks 934 in opposite phases by supplying current to the coil 933. For this reason, the undesirable vibration of the magnetic block 934 is reduced. In the third conventional actuator 930, two magnetic blocks 934 are arranged in parallel. For this reason, compared with the second conventional actuator 920, the dimension in the direction of reciprocation can be reduced. Note that Patent Document 3 discloses an example of a third conventional actuator 930.

JP 2002-176758 A Japanese Patent No. 3475949 Japanese Patent No. 4487650

The electric linear actuator can be used for an output shaft vibration type electric device. The output shaft vibration type electric device reciprocates the output shaft by an electric linear actuator. Patent Documents 1 and 2 disclose an electric toothbrush as an example of an output shaft vibration type electric device.

The inventor of the present application examined the use of an electric linear actuator having a structure similar to the third conventional actuator 930 for the output shaft vibration type electric device. FIG. 25 shows an electric oral hygiene device 940 as an example of the output shaft vibration type device.

The electric oral hygiene device 940 includes an electric linear actuator 941, an output shaft 943, a device functional component 944, and a main body case 945 as a drive source. The main body case 945 houses the electric linear actuator 941. The electric linear actuator 941 is different from the third conventional actuator 930 in that it has an output functional component 942, and has substantially the same configuration as the third conventional actuator 930 in other points.

The output functional component 942 is attached to one magnetic block 934 via a block coupling component 937. The output functional component 942 is formed as a component for mounting the output shaft 943. The output shaft 943 is attached to the output functional component 942. The device functional component 944 is attached to the output shaft 943.

Each magnetic block 934 reciprocates in the protruding direction (left direction in FIG. 24) and the retracting direction (right direction in FIG. 24). The first connecting component 938 is disposed on the protruding direction side with respect to each magnetic block 934. The first connecting component 938 connects one magnetic block 934 and the other magnetic block 934 to each other. The second connecting component 939 is disposed on the retracting direction side with respect to each magnetic block 934. The second connecting component 939 connects one magnetic block 934 and the other magnetic block 934 to each other.

The inventor of the present application has found that the electric oral hygiene device 940 includes the following problems.
One magnetic block 934 is attached with an output shaft 943 via a block coupling component 937 and an output functional component 942. For this reason, in the electric oral hygiene apparatus 940, the weight of one magnetic block 934 and the weight of the other magnetic block 934 are unbalanced. For this reason, an undesired vibration is generated as one magnetic block 934 reciprocates. In addition, although the electric oral hygiene apparatus was assumed here as an output shaft vibration type electric apparatus, and the subject of the electric linear actuator was mentioned, the same subject is the electric drive of output shaft vibration type electric apparatuses other than an electric oral hygiene apparatus. It also exists in linear actuators.

The present invention was created based on the above background, and provides an electric linear actuator capable of reducing undesirable vibrations, and an output shaft vibration type electric apparatus having the electric linear actuator. Objective.

One embodiment of the present invention is an electric linear actuator that drives an output shaft of an output shaft vibration type electric device. The electric linear actuator includes a fixed block, an output movable block, an even movable block, a block coupling component, an output functional component, and an even functional component, and reciprocates in a protruding direction and a retracting direction defined as a movable direction. Configured to do. The output movable block and the even movable block are arranged in parallel along a direction orthogonal to the movable direction. The block coupling component is coupled to the fixed block, the output movable block, and the even movable block. The output movable block and the pair movable block reciprocate in the movable direction in opposite phases with each other by an electromagnetic force acting between the fixed block and the stationary movable block. The output functional component is coupled to the output movable block and the output shaft. The kinematic function component includes a kinematic component main body coupled to the kinematic movable block, and a kinematic component adjusting unit integrally formed with the kinematic component main body using the same material as the kinematic component main body. The kinematic part adjustment unit is disposed closer to the drawing direction than the kinematic movable block.

Another aspect of the present invention is an electric linear actuator that drives an output shaft of an output shaft vibration type electric device. The electric linear actuator includes an output movable block, a pair movable block, a block coupling component, an output functional component, and a pair functional component, and reciprocates in a projecting direction and a retracting direction defined as a movable direction. It is configured. The output movable block and the even movable block are arranged in parallel along a direction orthogonal to the movable direction. The block coupling component is coupled to the output movable block and the pair movable block. The output movable block and the pair movable block reciprocate in the movable direction in opposite phases with each other by an electromagnetic force acting between the output movable block and the pair movable block. The output functional component is coupled to the output movable block and the output shaft. The kinematic function component includes a kinematic component main body coupled to the kinematic movable block, and a kinematic component adjusting unit integrally formed with the kinematic component main body using the same material as the kinematic component main body. The kinematic part adjustment unit is disposed closer to the drawing direction than the kinematic movable block.

Preferably, the electric linear actuator further includes an additional adjustment component coupled to the counter component adjustment unit.
In the electric linear actuator, it is preferable that the additional adjustment component is disposed closer to the pair movable block than the pair component adjustment unit in the movable direction.

In the electric linear actuator, it is preferable that the weight of the paired component main body is larger than the weight of the paired component adjusting unit.
In the electric linear actuator, the output functional component includes an output component main body coupled to the output movable block, and an output shaft coupling coupled to the output component main body and the output shaft. preferable. In this configuration, the electric linear actuator includes a first segmented region and a second segmented region which are segmented along a coupling portion center line of the coupling portion for the output shaft extending in the axial direction of the output shaft in a front view of the electric linear actuator. Includes segmented areas. In this case, it is preferable that at least the kinematic movable block is disposed in the first segmented region. Moreover, it is preferable that the gravity center of the function coupling | bond part containing the said kinematic movable block and the said kinematic function component is located in the said 1st division area.

Another aspect of the present invention is an output shaft vibration type electric device. The output shaft vibration type electric device includes the electric linear actuator and the output shaft. The output shaft is coupled to the output functional component.

The output shaft vibration type electric device has, for example, an electric oral hygiene device.

The electric linear actuator and the output shaft vibration type electric device can reduce undesirable vibrations.

The front view of the output-shaft vibration-type electric device of 1st Embodiment. The perspective view of the electric linear actuator of 1st Embodiment. The exploded perspective view of the electric linear actuator of a 1st embodiment. The top view of the electric linear actuator of 1st Embodiment. The front view of the electric linear actuator of 1st Embodiment. The rear view of the electric linear actuator of 1st Embodiment. FIG. 5 is a view relating to the electric linear actuator of the first embodiment and is a cross-sectional view taken along line XA-XA in FIG. The side view by the side of the protrusion direction in the electric linear actuator of 1st Embodiment. The side view of the drawing direction side in the electric linear actuator of 1st Embodiment. The perspective view of the block coupling component of 1st Embodiment. The front view of the block coupling component of 1st Embodiment. The side view of the protrusion side in the block coupling component of 1st Embodiment. The side view by the side of the drawing in the block coupling component of 1st Embodiment. The fragmentary sectional view of the electric linear actuator of a 1st embodiment. Partial sectional view of the electric linear actuator of the first embodiment It is a figure regarding the electric linear actuator of 1st Embodiment, and is the fragmentary sectional view fractured | ruptured in the longitudinal direction. It is a figure regarding the electric linear actuator of 1st Embodiment, and the fragmentary sectional view fractured | ruptured in another position of the longitudinal direction. FIG. 18 is a view relating to the electric linear actuator of the first embodiment, and is a cross-sectional view taken along line XB-XB in FIG. 17. FIG. 18 is a diagram relating to the electric linear actuator of the first embodiment, and is a cross-sectional view taken along line XC-XC in FIG. 17. The fragmentary sectional view of the electric linear actuator of 2nd Embodiment. The partial front view of the electric linear actuator of 3rd Embodiment. Sectional drawing of a 1st conventional actuator. Sectional drawing of a 2nd conventional actuator. The front view of a 3rd conventional actuator. The front view of a virtual electric oral hygiene apparatus.

(First embodiment)
The configuration of the output shaft vibration type electric device 10 will be described.
The description regarding the output shaft vibration type electric apparatus 10 will mainly refer to FIGS. 1 and 16. As an example, the output shaft vibration type electric device 10 has a form of an electric toothbrush as an electric oral hygiene device. The output shaft vibration type electric device 10 has a plurality of components. A plurality of components of the output shaft vibration type electric device 10 include an electric device main body 11, an apparatus functional component 12, a circuit board 13, a control unit 14, a battery 15, an elastic component 16 (see FIG. 16), and a fastening component 17 (FIG. 16). Reference) and an electric linear actuator 40. The output shaft vibration type electric device 10 has a structure capable of coupling and separating the electric device main body 11 and the device functional component 12 from each other. The output shaft vibration type electric device 10 reciprocates the device functional component 12 by the electric linear actuator 40.

The electric device main body 11 has a vertically long shape. The electric device main body 11 has an output shaft 20 and a main body case 30. The electric device main body 11 reciprocates the output shaft 20 by the electric linear actuator 40.

The main body case 30 is made of a resin material. The main body case 30 has a vertically long shape. The main body case 30 has a case peripheral wall portion 31 and a case internal space 38 (see FIG. 16). The main body case 30 forms a case internal space 38 inside the case peripheral wall portion 31. The main body case 30 houses the circuit board 13, the control unit 14, the battery 15, and the electric linear actuator 40 in the case internal space 38. The main body case 30 accommodates a primary battery or a secondary battery as the battery 15. The main body case 30 has a structure in which the battery 15 can be attached and detached.

The device functional part 12 has a form of a toothbrush type attachment. The device functional component 12 has a vertically long shape. The device functional component 12 has a structure that can be coupled to and separated from the output shaft 20. The device functional component 12 reciprocates with respect to the electric device main body 11 according to the reciprocating motion of the output shaft 20. The device functional component 12 defines a form as an electric toothbrush in the output shaft vibration type electric device 10.

The configuration of the electric linear actuator 40 will be described.
Refer mainly to FIG. 2 for the description regarding the electric linear actuator 40. FIG. Each component of the electric linear actuator 40 defines a movable direction DX, a height direction DY, a width direction DZ, and a planar direction. The movable direction DX indicates the bidirectional motion output by the electric linear actuator 40. The height direction DY indicates a bidirectional direction orthogonal to the movable direction DX in the front view (FIG. 5) of the electric linear actuator 40. The width direction DZ indicates a bidirectional direction orthogonal to the movable direction DX and the height direction DY. The plane direction indicates all directions orthogonal to the movable direction DX. The planar direction includes a height direction DY and a width direction DZ.

One side of the movable direction DX indicates the protruding direction DXL. The other of the movable directions DX indicates a pull-in direction DXR. The protruding direction DXL indicates a direction in which the output shaft 20 is pushed out of the electric linear actuator 40 when the electric linear actuator 40 is viewed from the front. The pull-in direction DXR indicates a direction in which the output shaft 20 is pulled into the electric linear actuator 40 when the electric linear actuator 40 is viewed from the front.

One side in the height direction DY indicates the top surface direction DYT. The other of the height direction DY indicates a bottom surface direction DYB. The top surface direction DYT indicates a direction from the bottom side to the top side in the front view of the electric linear actuator 40. The bottom surface direction DYB indicates a direction from the top side to the bottom side in the front view of the electric linear actuator 40.

One side of the width direction DZ indicates the front direction DZF. The other of the width direction DZ shows the back direction DZR. The front direction DZF indicates a direction from the back side to the front side in a side view of the electric linear actuator 40. The back direction DZR indicates a direction from the front side to the back side in the side view of the electric linear actuator 40.

The electric linear actuator 40 has a longitudinal portion in the movable direction DX. The electric linear actuator 40 has a short portion in the width direction DZ. The electric linear actuator 40 has a plurality of components. The plurality of components of the electric linear actuator 40 include a fixed block 50, an output movable block 60, a pair movable block 70, a protruding side connecting component 80, and a drawing side connecting component 90. The plurality of components of the electric linear actuator 40 further include a block coupling component 100, an output functional component 200, an even functional component 300, an additional adjustment component 400, a plurality of fastening components 41, and a plurality of fastening components 42. The electric linear actuator 40 is coupled to the output shaft 20 in the output functional component 200. The electric linear actuator 40 reciprocates the output movable block 60 in the movable direction DX by an electromagnetic force acting between the fixed block 50 and the output movable block 60. The electric linear actuator 40 outputs the reciprocating motion in the movable direction DX by the reciprocating motion of the output movable block 60. The electric linear actuator 40 reciprocates the output shaft 20 in the movable direction DX by outputting a reciprocating motion in the movable direction DX.

The relationship between the components of the electric linear actuator 40 will be described.
Refer mainly to FIG. 3 for the description regarding the relationship of each component. The electric linear actuator 40 has a plurality of function coupling portions having an integrated relationship. The integration relationship in the functional coupling part is formed by coupling parts. Each functional coupling part has a structure capable of moving relative to other functional coupling parts in units of functional coupling parts. The integration of the function coupling portions allows each component to move relatively among the plurality of components included in each function coupling portion. The fixed block 50, the output movable block 60, the pair movable block 70, the projecting side coupling component 80, and the drawing side coupling component 90 each form a function coupling portion.

In the electric linear actuator 40, the output movable block 60 and the even movable block 70 are arranged in parallel along the width direction DZ. The output movable block 60 and the pair movable block 70 have a gap in the width direction DZ. The fixed block 50 and the output movable block 60 form a linear motor. The fixed block 50 and the pair movable block 70 form a linear motor. The output movable block 60 and the pair movable block 70 reciprocate in the movable direction DX with opposite phases.

The block coupling component 100 is coupled to the fixed block 50, the output movable block 60, the pair movable block 70, the protruding side coupling component 80, the drawing side coupling component 90, the output functional component 200, and the pair functional component 300. The block coupling component 100 allows translation of the output movable block 60 and the even movable block 70 with respect to the fixed block 50.

The output shaft 20 is made of a metal material. The output shaft 20 is arranged on the projecting direction DXL side with respect to the block coupling component 100 in the movable direction DX. The output shaft 20 is coupled to the output functional component 200. The center line of the output shaft 20 is parallel to the movable direction DX. The output shaft 20 includes a shaft base portion 21, a shaft tip portion 22, and a fitting groove 23. The output shaft 20 is coupled to the output functional component 200 at the shaft base portion 21. The output shaft 20 is coupled to the device functional component 12 at the shaft tip portion 22. The output shaft 20 reciprocates the device functional component 12 by the output of the electric linear actuator 40.

The configuration of the fixed block 50 will be described.
For the description of the fixed block 50, reference is mainly made to FIG. 3 and FIGS. The fixed block 50 is disposed at an intermediate portion of the block coupling component 100 in the movable direction DX. The fixed block 50 is disposed at a position on the bottom surface direction DYB side of the output movable coupling portion 120 and the pair movable coupling portion 130 in the height direction DY. In the width direction DZ, the fixed block 50 is disposed from a position on the front direction DZF side to a position on the back direction DZR side of the block coupling component 100.

The fixed block 50 has a block shape. The fixed block 50 has a longitudinal portion in the movable direction DX. The fixed block 50 has a short portion in the width direction DZ. The fixed block 50 has a plurality of components. The plurality of components of the fixed block 50 include a core 51, a coil 52, an insulating component 53, and a support component 54. The fixed block 50 has a structure in which a plurality of components are coupled to each other. The plurality of components of the fixed block 50 form an integrated function by having an integrated relationship. The fixed block 50 is coupled to the fixing coupling portion 110 of the block coupling component 100 by a plurality of fastening components 42. The fixing block 50 and the fixing coupling part 110 have an integrated relationship.

The core 51 is made of a magnetic material. The core 51 has a block shape in which slits are formed. The core 51 is disposed on the top surface of the support component 54. The core 51 is coupled to the support component 54. The core 51 has a maximum magnetic flux density suitable for driving the output movable block 60 and the pair movable block 70 in resonance.

The coil 52 is made of a conductive material. The coil 52 is wound around the core 51. The coil 52 is electrically connected to the circuit board 13 (see FIG. 1) by a lead wire (not shown). The coil 52 is supplied with current from the circuit board 13. The coil 52 has a number of turns suitable for reciprocating the output movable block 60 and the pair movable block 70.

The insulating component 53 is made of a non-conductive material. The insulating component 53 has a shape that covers the teeth of the core 51. The insulating component 53 is coupled to the teeth of the core 51. The insulating component 53 is disposed between the core 51 and the coil 52 (see FIG. 7). The insulating component 53 insulates the coil 52 from the core 51.

The support component 54 is made of a resin material. The support component 54 has a shape similar to a flat plate shape. The support component 54 is disposed at a position on the bottom block direction DYB side of the fixed block 50. The support component 54 is coupled to the fixing coupling portion 110 by a plurality of fastening components 42.

The configuration of the output movable block 60 will be described.
For the description of the output movable block 60, reference is mainly made to FIG. 3 and FIGS. The output movable block 60 is disposed between the protruding side support part 140 and the drawing side support part 150 in the movable direction DX. The output movable block 60 is disposed between the fixed coupling portion 110 and the output movable coupling portion 120 in the height direction DY. The output movable block 60 is arranged in the front direction DZF side with respect to the center line in the width direction DZ of the block coupling component 100 in the width direction DZ.

The output movable block 60 has a rectangular shape. The output movable block 60 has a plurality of components. The plurality of components of the output movable block 60 include an output permanent magnet 61 and an output back yoke 62. The output movable block 60 has a structure in which a plurality of components are coupled to each other. The plurality of components of the output movable block 60 have an integrated relationship. The output movable block 60 is coupled to the output movable coupling portion 120 of the block coupling component 100 by a plurality of fastening components 41. The output movable block 60 and the output movable coupling portion 120 have an integrated relationship.

The output permanent magnet 61 has a flat plate shape. The output permanent magnet 61 is coupled to the output back yoke 62 with an adhesive. The output permanent magnet 61 faces the fixed block 50 in the height direction DY (see FIG. 5). The output permanent magnet 61 forms an output-side gap 63 as a gap with the fixed block 50. The output permanent magnet 61 moves relative to the fixed block 50 in the movable direction DX under the influence of the magnetic field formed by the fixed block 50. The output permanent magnet 61 has a structure that moves in the movable direction DX by a phase opposite to that of the pair movable block 70.

The output back yoke 62 is made of a magnetic material. The output back yoke 62 has a flat plate shape. The output back yoke 62 is coupled to the output movable coupling portion 120 of the block coupling component 100 by a plurality of fastening components 41. The output back yoke 62 increases the attractive force or attractive force of the output permanent magnet 61.

The configuration of the kinematic movable block 70 will be described.
3 and 5 to 7 will be mainly referred to for the explanation of the kinematic movable block 70. The pair movable block 70 is disposed between the protruding side support part 140 and the drawing side support part 150 in the movable direction DX. The pair movable block 70 is disposed between the fixed coupling portion 110 and the pair movable coupling portion 130 in the height direction DY. The pair movable block 70 is disposed in the width direction DZ at a position closer to the back surface direction DZR than the center line of the block coupling component 100 in the width direction DZ.

The even-moving block 70 has a rectangular shape. The pair movable block 70 has a plurality of components. The plurality of components of the pair movable block 70 include a pair permanent magnet 71 and a pair back yoke 72. The even-moving block 70 has a structure in which a plurality of components are coupled to each other. The plurality of components of the kinematic movable block 70 have an integrated relationship. The couple movable block 70 is coupled to the couple movable coupling portion 130 of the block coupling component 100 by a plurality of fastening components 41. The pair movable block 70 and the pair for pair movable 130 have an integrated relationship.

The pair permanent magnet 71 has a flat plate shape. The pair permanent magnet 71 is coupled to the pair back yoke 72 by an adhesive. The pair permanent magnet 71 faces the fixed block 50 in the height direction DY (see FIG. 6). The even-numbered permanent magnet 71 forms a gap-side gap 73 as a gap with the fixed block 50. The pair permanent magnet 71 moves relative to the fixed block 50 in the movable direction DX under the influence of the magnetic field formed by the fixed block 50. The pair permanent magnet 71 has a structure that moves in the movable direction DX by a phase opposite to that of the output movable block 60.

The pair back yoke 72 is made of a magnetic material. The pair back yoke 72 has a flat plate shape. The pair back yoke 72 is coupled to the pair movable coupling portion 130 of the block coupling component 100 by a plurality of fastening components 41. The pair back yoke 72 increases the attracting force or attractive force of the pair permanent magnet 71.

The structure of the protrusion side connection component 80 is demonstrated.
For the description of the protruding side connecting part 80, reference is mainly made to FIGS. The protruding side connecting component 80 is arranged at a position closer to the protruding direction DXL than the block coupling component 100 in the movable direction DX. In the height direction DY, the protrusion-side connecting component 80 is disposed from the position on the top surface direction DYT side to the position on the bottom surface direction DYB side of the block coupling component 100. In the width direction DZ, the protruding-side connecting component 80 is disposed from a location on the front direction DZF side to a location on the back direction DZR side of the block coupling component 100.

The protruding side connecting part 80 is made of a resin material. The protrusion side connection component 80 has a shape similar to an annular shape. The protrusion side connection component 80 has a shape similar to a shape in which a part of a complete circular ring is cut out as an example of a shape similar to a circular shape. The protrusion-side connecting component 80 has an asymmetric shape with respect to the center line in the width direction DZ in a side view on the protrusion direction DXL side. The protruding side connecting part 80 includes a connecting part output side end 81, a connecting part pair side end 82, a connecting part space 83, and a connecting part separation part 84. The protrusion-side connecting component 80 has a structure capable of resonance driving the output movable block 60 and the pair movable block 70.

The connecting part output side end 81 is connected to the output movable connecting part 120 of the block connecting part 100. The connecting component pair-side end 82 is coupled to the pair movable coupling portion 130 of the block coupling component 100. The connecting part space 83 is formed on the inner peripheral side of the protruding side connecting part 80 having an annular shape or a shape similar to the annular shape. The connecting part separating portion 84 is formed between the connecting part output side end 81 and the connecting part pair side end 82.

The configuration of the pull-in side connecting component 90 will be described.
For the description of the pull-in side connecting component 90, reference is mainly made to FIG. 10, FIG. 11, and FIG. The pull-in side connection component 90 is arranged at a position closer to the pull-in direction DXR than the block coupling component 100 in the movable direction DX. The lead-in side connecting component 90 is arranged in the height direction DY from the location on the top surface direction DYT side to the location on the bottom surface direction DYB side of the block coupling component 100. In the width direction DZ, the lead-in side connection component 90 is arranged from the location on the front direction DZF side to the location on the back direction DZR side of the block coupling component 100.

The lead-in side connection component 90 is formed of a resin material. The lead-in side connection component 90 has a shape similar to an annular shape. The drawing-side connecting component 90 has a shape similar to a shape in which a part of a complete circular ring is cut out as an example of a shape similar to a circular shape. The drawing-in side connecting component 90 has a symmetrical shape with respect to the center line in the width direction DZ in a side view on the protruding direction DXL side. The pull-in side connection component 90 includes a connection component output side end 91, a connection component pair-side end 92, a connection component space 93, and a connection component separation portion 94. The pull-in side connecting component 90 has a structure capable of resonance driving the output movable block 60 and the pair movable block 70.

The connecting component output side end 91 is connected to the output movable connecting portion 120 of the block connecting component 100. The coupling component pair-side end 92 is coupled to the pair-moving coupling portion 130 of the block coupling component 100. The connecting part space 93 is formed on the inner peripheral side of the pull-in side connecting part 90. The connecting part separating portion 94 is formed between the connecting part output side end 91 and the connecting part pair side end 92.

Each of the connecting

parts

80 and 90 has a structure based on the following design concept.
The protruding side connecting component 80 is adjacent to the output functional component 200 in the movable direction DX. For this reason, when the output movable block 60 and the pair movable block 70 reciprocate, the protrusion side connection component 80 has a possibility of contacting with the output functional component 200. For this reason, the protrusion side connection component 80 has a connection part contact-inhibition structure. The protrusion-side connecting component 80 is less likely to come into contact with the output functional component 200 by having the connecting portion contact suppressing structure.

The connection part contact suppression structure has, as an example, the thickness of the protruding side connection part 80 included in the appropriate thickness range. The appropriate thickness range of the protrusion side connection component 80 has thickness thinner than the thickness of the drawing side connection component 90 as an example. The thickness of the projecting side connecting component 80 can be defined by the distance between the surface on the projecting direction DXL side and the surface on the retracting side of the projecting side connecting component 80 in the movable direction DX. The thickness of the drawing-side connecting component 90 can be defined by the distance between the surface on the protruding direction DXL side and the drawing-side surface of the drawing-side connecting component 90 in the movable direction DX.

Compared to the case where the protruding side connecting part 80 is assumed to have the same thickness as the drawing side connecting part 90 or thicker than the drawing side connecting part 90 because the thickness is smaller than the drawing side connecting part 90. As a result, a room for securing a gap with the output functional component 200 is increased. For this reason, the thickness of the protrusion side connection component 80 included in the appropriate thickness range contributes to the formation of the connection portion contact suppression structure.

The thickness of the protruding side connecting part 80 affects the spring constant of the protruding side connecting part 80. The spring constant of the projecting side connecting component 80 affects the resonance drive of the output movable block 60 and the pair movable block 70. For this reason, when priority is given to setting the preferable spring constant of the protrusion side connection component 80 to include the thickness of the protrusion side connection component 80 in an appropriate thickness range, the preferable form of resonance drive may not be obtained. Occurs. The preferable form of the connection part contact suppression structure is obtained by making the thickness of the protrusion side connection component 80 thinner. For this reason, the design which improves the effect of the connection part contact suppression structure makes the spring constant of the protrusion side connection component 80 smaller.

On the other hand, the resonance drive of the output movable block 60 and the pair movable block 70 is affected by the spring constant of the projecting side connecting part 80 and the spring constant of the drawing side connecting part 90. For this reason, when the relationship between the thickness of the protrusion-side connecting component 80 and the appropriate thickness range is designed with priority, a preferable form of resonance driving can be obtained by adjusting the thickness of the drawing-side connecting component 90. it can.

The protruding side connecting part 80 and the drawing side connecting part 90 have a thickness reflecting the above design concept. The thickness of the protrusion side connection component 80 contributes to forming the preferable form of a connection part contact-inhibition structure. The thickness of the pull-in side connecting component 90 is thicker than the thickness of the protruding side connecting component 80. The thickness of the pull-in side connecting component 90 compensates for a decrease in the spring constant of the protruding side connecting component 80 due to the thin thickness of the protruding side connecting component 80. The lead-in side coupling component 90 has a spring constant that forms a preferred form of resonant drive. The thickness of the lead-in side connection component 90 contributes to securing this spring constant. The spring constant of the projecting side connecting part 80 and the spring constant of the drawing side connecting part 90 form a preferable form of resonance driving.

As described above, the protruding side connecting part 80 and the drawing side connecting part 90 have different shapes, thereby forming a preferable form of the connecting portion contact suppression structure and a preferable form of resonance driving.

The configuration of the block coupling component 100 will be described.
Refer mainly to FIG. 10 and FIG. 11 for the description regarding the block coupling component 100. FIG. The block coupling component 100 is made of a resin material. The block coupling component 100 has a structure in which a plurality of component constituent parts are integrally formed of the same resin material. The plurality of component parts of the block coupling component 100 include two fixed coupling portions 110, an output movable coupling portion 120, a pair movable coupling portion 130, two projecting side support portions 140, and two pull-in side support portions 150. including. The plurality of component constituent parts of the block coupling component 100 further includes two output side resin inlet portions 121, an output side resin flow passage portion 122, an output protruding side connecting portion 123, and an output drawing side connecting portion 124. The plurality of component constituent parts of the block coupling component 100 further include two even-side resin inlet portions 131, an even-side resin flow passage portion 132, an even-projection-side connection portion 133, and an even-piece pull-in side connection portion 134.

The block coupling component 100 has a plurality of functional parts. Each functional part has a structure capable of moving relative to other functional parts with the functional part as a unit. The fixed coupling portion 110, the output movable coupling portion 120, and the even-moving coupling portion 130 each form a functional part.

The fixing coupling part 110 on the projecting direction DXL side is arranged at a position on the projecting direction DXL side with respect to the center line of the movable direction DX of the block coupling component 100 in the movable direction DX. The fixing coupling portion 110 on the pulling direction DXR side is disposed in the movable direction DX at a position closer to the pulling direction DXR side than the center line of the movable direction DX of the block coupling component 100. Each fixing coupling portion 110 is disposed at a position on the bottom surface direction DYB side of the block coupling component 100 in the height direction DY. Each fixing coupling portion 110 is arranged from the position on the front direction DZF side to the position on the back direction DZR side of the block coupling component 100 in the width direction DZ.

Each fixing coupling part 110 has a block shape. The fixing coupling portion 110 on the protruding direction DXL side and the fixing coupling portion 110 on the drawing direction DXR side face each other in the movable direction DX. The fixing coupling portion 110 on the protruding direction DXL side is continuous with the protruding side support portion 140. The fixing coupling portion 110 on the drawing direction DXR side is continuous with the drawing-side support portion 150. Each fixing coupling portion 110 has a structure in which the fixing block 50 is sandwiched. Each fixing coupling portion 110 has a coupling portion support surface 111. The joint support surface 111 has a planar shape.

The output movable coupling portion 120 is disposed between the protruding side connecting component 80 and the drawing side connecting component 90 in the movable direction DX. The output movable coupling portion 120 is disposed at a position on the top surface direction DYT side of the block coupling component 100 in the height direction DY. In the width direction DZ, the output movable coupling portion 120 is disposed at a location closer to the front direction DZF than the center line of the block coupling component 100 in the width direction DZ.

The output movable coupling portion 120 is integrally formed with two output side resin inlet portions 121, an output side resin flow passage portion 122, an output projecting side connecting portion 123, and an output drawing side connecting portion 124. The output movable coupling portion 120, the two output side resin inlet portions 121, the output side resin flow passage portion 122, the output protruding side connecting portion 123, and the output drawing side connecting portion 124 form one functional part.

The output side resin inlet 121 has a rectangular shape. The output side resin inlet 121 has a longitudinal portion in the movable direction DX. The output side resin inlet part 121 is formed on the output side resin flow path part 122. The output side resin inlet portion 121 on the protruding direction DXL side and the output side resin inlet portion 121 on the drawing direction DXR side are formed with a gap in the movable direction DX.

The output side resin flow path part 122 has a rectangular shape longer than the output side resin inlet part 121. The output side resin flow path part 122 has a longitudinal part in the movable direction DX. The output side resin flow path part 122 is formed on the output movable coupling part 120. The output-side resin flow path portion 122 is formed from the end portion on the protruding direction DXL side to the end portion on the pull-in direction DXR side of the output movable coupling portion 120.

The output protruding side connecting portion 123 has a shape similar to a flat plate shape. The output protrusion side connection part 123 has a longitudinal part in the width direction DZ. The output protrusion side connection part 123 is continuous with the end part on the protrusion direction DXL side of the output side resin flow path part 122. The output protruding side connecting portion 123 connects the output side resin flow path portion 122, the protruding side support portion 140, and the protruding side connecting component 80 to each other. The output protrusion side connection part 123 has a planar shape at the top. The planar shape of the output projecting side connecting portion 123 forms a smooth flow of the resin material from the output side resin flow channel portion 122 to the projecting side supporting portion 140 and the projecting side connecting component 80 when the block coupling component 100 is molded. Contribute to that.

The output lead-in side connecting portion 124 has a shape similar to a flat plate shape. The output drawing side connection part 124 has a longitudinal part in the width direction DZ. The output drawing side connecting portion 124 is continuous with the end portion on the drawing direction DXR side of the output side resin flow passage portion 122. The output drawing side connecting part 124 connects the output side resin flow path part 122, the drawing side support part 150, and the drawing side connecting part 90 to each other. The output drawing side connection part 124 has a planar shape at the top. The planar shape of the output drawing side connecting portion 124 forms a smooth flow of the resin material from the output side resin flow channel portion 122 to the drawing side supporting portion 150 and the drawing side connecting component 90 when the block coupling component 100 is molded. Contribute to that.

The coupling part for movable pair 130 is arranged between the protruding side connecting part 80 and the drawing side connecting part 90 in the moving direction DX. The couple movable coupling part 130 is disposed at a position on the top surface direction DYT side of the block coupling component 100 in the height direction DY. The pair of movable couples 130 is disposed in the width direction DZ at a position closer to the back surface direction DZR than the center line of the block connection component 100 in the width direction DZ.

The couple-moving coupling part 130 is integrally formed with two pair-side resin inlet parts 131, a pair-side resin flow path part 132, a pair projection-side connection part 133, and a pair drawing-in side connection part 134. The pair of movable couples 130, the pair of resin inlets 131, the pair of resin flow passages 132, the pair of protruding protrusions 133, and the pair of pulling-in connections 134 form one functional part.

The even-side resin inlet 131 has a rectangular shape. The even-side resin inlet portion 131 has a longitudinal portion in the movable direction DX. The even-side resin inlet portion 131 is formed on the even-side resin flow path portion 132. The even-side resin inlet portion 131 on the protruding direction DXL side and the even-side resin inlet portion 131 on the drawing direction DXR side are formed with an interval in the movable direction DX.

The even-side resin flow path part 132 has a longer rectangular shape than the even-side resin inlet part 131. The even-side resin flow path portion 132 has a longitudinal portion in the movable direction DX. The even-side resin flow path portion 132 is formed on the couple-moving coupling portion 130. The pair-side resin flow path portion 132 is formed from the end portion on the protruding direction DXL side to the end portion on the pull-in direction DXR side of the pair-moving coupling portion 130.

The even number protrusion side connecting part 133 has a shape similar to a flat plate shape. The even number protrusion side coupling part 133 has a longitudinal portion in the width direction DZ. The even-numbered protrusion side connecting portion 133 is continuous with the end portion on the protruding direction DXL side of the even-side resin flow path portion 132. The even-numbered protrusion-side connecting portion 133 connects the even-side resin flow path portion 132, the protruding-side support portion 140, and the protruding-side connecting component 80 to each other. The even number protrusion side coupling part 133 has a planar shape at the top. The planar shape of the even-numbered protrusion-side connecting portion 133 forms a smooth flow of the resin material from the pair-side resin flow path portion 132 to the protruding-side support portion 140 and the protruding-side connecting component 80 when the block coupling component 100 is molded. Contribute to that.

The even number drawing side connecting part 134 has a shape similar to a flat plate shape. The even number drawing side connection part 134 has a longitudinal part in the width direction DZ. The even number drawing side connecting part 134 is continuous with the end part on the drawing direction DXR side of the pair side resin flow path part 132. The even-numbered protrusion-side connecting portion 133 connects the pair-side resin flow path portion 132, the drawing-side support portion 150, and the drawing-side connecting component 90 to each other. The pair drawing side connection part 134 has a planar shape at the top. The planar shape of the even-number pull-in side connecting portion 134 forms a smooth flow of the resin material from the pair-side resin flow path portion 132 to the pull-in side supporting portion 150 and the pull-in side connecting component 90 when the block coupling component 100 is molded. Contribute to that.

The structure of the protrusion side support part 140 is demonstrated.
The description regarding the protrusion side support part 140 mainly refers to FIG. 3, FIG. 7, FIG. 11, and FIG. The protruding side support part 140 is disposed between the fixing coupling part 110 on the protruding direction DXL side and the protruding side connecting part 80 in the movable direction DX. The protruding side support part 140 includes a protruding side deformable part 141 and a protruding side connecting part 142.

The protrusion side support part 140 on the front direction DZF side is arranged at a position on the bottom surface direction DYB side of the output protrusion side coupling part 123 in the height direction DY. The protrusion-side support part 140 on the front direction DZF side is disposed in a position on the front direction DZF side with respect to the center line in the width direction DZ of the block coupling component 100 in the width direction DZ.

The protrusion side support part 140 on the back surface direction DZR side is disposed at a position on the bottom surface direction DYB side of the pair protrusion protrusion side coupling part 133 in the height direction DY. The protrusion-side support part 140 on the back surface direction DZR side is disposed in a position on the back surface direction DZR side with respect to the center line in the width direction DZ of the block coupling component 100 in the width direction DZ.

The projecting side deformable portion 141 has a thin plate shape. The protrusion-side deformable portion 141 has a longitudinal portion in the height direction DY. The protruding side deformable portion 141 has a short portion in the width direction DZ. The protrusion-side deformation portion 141 has a structure in which the deformation amount in the longitudinal direction is smaller than the deformation amount in the movable direction DX. The protrusion-side deformation portions 141 are deformed independently of each other in the movable direction DX.

The front-side DZF-side protruding side deformable portion 141 is coupled to the output protruding side connecting portion 123. The protrusion-side deforming portion 141 on the front direction DZF side defines the position of the portion on the protrusion direction DXL side of the output movable coupling portion 120 with respect to the fixing coupling portion 110 in the height direction DY. The protrusion-side deforming portion 141 on the front direction DZF side allows translation of the output movable block 60 with respect to the fixed block 50 in the movable direction DX.

The protrusion-side deformed portion 141 on the back side DZR side is coupled to the even-numbered protrusion-side connecting portion 133. The protrusion-side deforming portion 141 on the back surface direction DZR side defines the position of the portion on the protrusion direction DXL side of the couple movable coupling portion 130 with respect to the fixing coupling portion 110 in the height direction DY. The protrusion-side deforming portion 141 on the back direction DZR side allows translation of the even-numbered movable block 70 relative to the fixed block 50 in the movable direction DX.

The protruding side connecting portion 142 has a rectangular shape. The front-side DZF-side protruding side connecting portion 142 connects the fixing coupling portion 110 on the protruding direction DXL side and the front-side DZF-side protruding side deformable portion 141 to each other. The protrusion-side connecting portion 142 on the back surface direction DZR side connects the fixing coupling portion 110 on the protrusion direction DXL side and the protrusion-side deformable portion 141 on the back surface direction DZR side.

The structure of the drawing-in side support part 150 will be described.
The description regarding the drawing-in side support part 150 will mainly refer to FIGS. 3, 7, 10, and 13. The drawing-side support part 150 is arranged between the fixing coupling part 110 on the drawing direction DXR side and the drawing-side connecting component 90 in the movable direction DX. The pull-in side support part 150 includes a pull-in side deformation part 151 and a pull-in side connection part 152.

The front-side DZF-side drawing-side support 150 is arranged at a location on the bottom side DYB side of the output drawing-side connecting portion 124 in the height direction DY. The lead-in side support part 150 on the front direction DZF side is arranged at a position on the front direction DZF side with respect to the center line in the width direction DZ of the block coupling component 100 in the width direction DZ.

The pull-in side support part 150 on the back surface direction DZR side is disposed at a position on the bottom surface direction DYB side of the pair pull-in side connecting part 134 in the height direction DY. The drawing-side support 150 on the back side DZR side is arranged in the back side DZR side of the block connecting component 100 with respect to the center line in the width direction DZ in the width direction DZ.

The pull-in side deformed portion 151 has a thin plate shape. The drawing-side deformable portion 151 has a longitudinal portion in the height direction DY. The pull-in side deformed portion 151 has a short portion in the width direction DZ. The pull-in side deformation portion 151 has a structure in which the deformation amount in the longitudinal direction is smaller than the deformation amount in the movable direction DX. The pull-in side deformation portions 151 are deformed independently of each other in the movable direction DX.

The pull-in side deformation portion 151 on the front direction DZF side is coupled to the output pull-in side connection portion 124. The front-side DZF-side pull-in side deformation portion 151 defines the position of the portion on the pull-in direction DXR side of the output movable coupling portion 120 with respect to the fixing coupling portion 110 in the height direction DY. The pull-in side deformation portion 151 on the front direction DZF side allows translation of the output movable block 60 with respect to the fixed block 50 in the movable direction DX.

The pull-in side deformed portion 151 on the back side direction DZR side is coupled to the pair pull-in side connecting portion 134. The drawing-side deforming portion 151 on the back side DZR side defines the position of the portion on the drawing direction DXR side of the pair of movable coupling portions 130 with respect to the fixing coupling portion 110 in the height direction DY. The retracting side deforming portion 151 on the back side direction DZR side allows translation of the even-numbered movable block 70 relative to the fixed block 50 in the movable direction DX.

The lead-in side connection part 152 has a rectangular shape. The front-side DZF-side pull-in side connecting part 152 connects the fixing coupling part 110 on the front-side direction DXR side and the front-side DZF-side pull-in side deforming part 151 to each other. The drawing-side connecting portion 152 on the back side DZR side connects the fixing coupling portion 110 on the drawing direction DXR side and the drawing side deforming portion 151 on the back side DZR side.

The protrusion side support part 140 and the drawing side support part 150 have the following functions.
The protrusion-side support part 140 on the front direction DZF side and the pull-in side support part 150 on the front direction DZF side define the position of the output movable block 60 in the height direction DY with respect to the fixed block 50. The protrusion-side support part 140 and the retracting-side support part 150 on the front direction DZF side define the position of the output movable block 60 in the height direction DY, thereby forming an output-side gap 63.

The rear side support part 140 on the rear side DZR side and the rear side support part 150 on the rear side DZR side define the position of the pair movable block 70 in the height direction DY with respect to the fixed block 50. The protrusion-side support part 140 and the retracting-side support part 150 on the back side direction DZR side define the position of the pair movable block 70 in the height direction DY, thereby forming the pair side gap 73.

The front-side direction DZF-side protruding side deformable portion 141 and the front-side direction DZF-side retracting-side deformable portion 151 restrict the movement direction of the output movable block 60 relative to the fixed block 50 to the movable direction DX. For this reason, the output movable block 60 translates in the movable direction DX by the electromagnetic force acting between the fixed block 50.

The rear-surface-direction DZR-side projecting-side deformable portion 141 and the back-surface-direction DZR-side retracting-side deformable portion 151 restrict the movement direction of the even-numbered movable block 70 relative to the fixed block 50 to the movable direction DX. For this reason, the pair movable block 70 is translated in the movable direction DX by the electromagnetic force acting between the fixed block 50.

The configuration of the output functional component 200 will be described.
For the description of the output functional component 200, reference is mainly made to FIGS. 3 to 5, FIG. 7, and FIG. The output functional component 200 is disposed at a position closer to the protruding direction DXL than the counter-functional component 300 in the movable direction DX. The output functional component 200 is disposed at a position closer to the top surface direction DYT than the block coupling component 100 in the height direction DY. The functional component 200 for output is arrange | positioned in the width direction DZ from the location by the side of the front direction DZF of the block coupling component 100 to the location by the side of the back direction DZR.

The output functional component 200 is made of a resin material. The output functional component 200 has a longitudinal portion in the movable direction DX. The output functional component 200 has a short portion in the width direction DZ. The output functional component 200 is coupled to the output movable coupling portion 120 by a plurality of fastening components 41. The output functional component 200 and the output movable coupling portion 120 have an integrated relationship. The output functional component 200 has a structure in which a plurality of component components are integrally formed of the same resin material. The plurality of component components of the output functional component 200 include an output component main body 210, an output shaft coupling unit 220, an output component reinforcing unit 230, an internal structure protection unit 240, a load receiving unit 250, and a component receiving unit 260. .

The output component main body 210 has a flat plate shape. The output component main body part 210 is disposed on the top surfaces of the output movable coupling part 120 and the pair movable coupling part 130. The output part main body 210 is coupled to the output movable coupling part 120 by a plurality of fastening parts 41. The output component main body 210 forms a basic portion of the output functional component 200.

The output shaft coupling portion 220 is disposed at a position closer to the projecting direction DXL than the projecting side connecting component 80 in the movable direction DX. The output shaft coupling portion 220 is continuous with the output component main body portion 210 and the output component reinforcing portion 230. The output shaft coupling portion 220 includes a coupling portion base portion 221, a coupling portion base surface 222, a coupling portion peripheral wall portion 223, and a coupling portion inner space 224.

The joint base portion 221 has a flat plate shape. The coupling portion base 221 is continuous with the end portion on the protruding direction DXL side of the output component main body portion 210 and the end portion on the protruding direction DXL side of the output component reinforcing portion 230. The coupling portion base portion 221 forms a gap with the protruding side connecting component 80. The coupling portion base portion 221 faces the protruding side support portion 140 via the connecting part space 83 in the movable direction DX.

The joint base surface 222 has a planar shape. The coupling portion base surface 222 is formed in a portion of the coupling portion base portion 221 on the protruding direction DXL side. The joint base surface 222 is parallel to the planar direction.

The connecting portion peripheral wall portion 223 has a column shape. The connecting portion peripheral wall portion 223 is continuous with the connecting portion base portion 221. The connecting portion peripheral wall portion 223 protrudes from the connecting portion base surface 222 in the protruding direction DXL. The coupling portion peripheral wall portion 223 forms a coupling portion inner space 224 (see FIG. 7). The coupling portion peripheral wall portion 223 accommodates the shaft base portion 21 in the coupling portion inner space 224. The coupling portion peripheral wall portion 223 is coupled to the shaft base portion 21. The coupling portion peripheral wall portion 223 has a structure surrounding the outer periphery of the shaft base portion 21.

The output part reinforcing part 230 is continuous with the output part main body part 210. The output component reinforcing portion 230 includes an output side reinforcing portion 231 and an even number side reinforcing portion 232. The output component reinforcing portion 230 has a structure for reinforcing the output component main body portion 210, a structure for reinforcing the output shaft coupling portion 220, and a structure for reinforcing the connection portion between the output component main body portion 210 and the output shaft coupling portion 220. Have. The output part reinforcement part 230 has a gap confirmation structure and a reinforcement part contact suppression structure.

The output side reinforcing portion 231 is arranged from the end portion on the pulling direction DXR side to the end portion on the protruding direction DXL side of the output component main body portion 210 in the movable direction DX. The output-side reinforcing portion 231 is disposed at a position closer to the front direction DZF than the block coupling component 100 in the width direction DZ. The output-side reinforcing portion 231 is continuous with the portion on the front direction DZF side of the output component main body portion 210.

The pair-side reinforcing portion 232 is disposed at a position on the projecting direction DXL side of the output component main body 210 in the movable direction DX. The pair-side reinforcing portion 232 is disposed at a position on the back surface direction DZR side of the block coupling component 100 in the width direction DZ. The pair-side reinforcing portion 232 is continuous with the portion of the output component main body portion 210 on the back direction DZR side.

The gap confirmation structure will be described.
Refer mainly to FIG. 5 and FIG. 6 for the description regarding the gap confirmation structure. The gap confirmation structure has an output-side gap confirmation structure for confirming the output-side gap 63 (FIG. 5) and an even-side gap confirmation structure for confirming the even-side gap 73 (FIG. 6). If the output-side gap confirmation structure does not exist, it is difficult to confirm the size and shape of the output-side gap 63 after the output functional component 200 is coupled to the block coupling component 100 in the manufacturing process. In the manufacturing process, it is difficult to confirm the size and shape of the even-side gap 73 after the paired functional component 300 is coupled to the block coupling component 100 when the opposed-side gap confirmation structure does not exist.

The output side gap confirmation structure has a structure in which the output side gap 63 is exposed to the outside of the electric linear actuator 40 when the electric linear actuator 40 is viewed from the front. As an example, the output-side gap confirmation structure has a structure in which the edge of the output-side reinforcing portion 231 adjacent to the output movable block 60 is formed at a position closer to the top surface direction DYT than the output-side gap 63. For this reason, the output side gap confirmation structure improves the workability regarding the confirmation of the output side gap 63 after the output functional component 200 is coupled to the block coupling component 100.

The even-side gap confirmation structure has a structure in which the opposite-side gap 73 is exposed to the outside of the electric linear actuator 40 in the rear view of the electric linear actuator 40. As an example, the pair-side gap confirmation structure has a structure in which the pair-side reinforcing portion 232 is not disposed at a location adjacent to the pair movable block 70. For this reason, the pair-side gap confirmation structure improves workability regarding confirmation of the pair-side gap 73 after the pair-side functional component 300 is coupled to the block coupling component 100.

The reinforcing portion contact suppression structure will be described.
Refer to FIGS. 4 to 6 mainly for the description of the reinforcing portion contact suppression structure. When it is assumed that the reinforcing portion contact suppression structure does not exist, the electric linear actuator 40 has a possibility that the pair-side reinforcing portion 232 comes into contact with at least one of the pair movable block 70 and the pair movable pair 130. The reason can be described as follows.

The even-side reinforcing portion 232 has an integrated relationship with the output movable block 60 and the output movable coupling portion 120. For this reason, the pair-side reinforcing portion 232 moves in the same phase as the output movable block 60 and the output movable coupling portion 120. On the other hand, the pair-side reinforcing portion 232 moves in a phase opposite to that of the pair-movable block 70 and the pair-moving coupling portion 130. For this reason, when the pair-side reinforcing portion 232 moves in the movable direction DX, the pair-side reinforcing portion 232 may come into contact with at least one of the pair movable block 70 and the pair movable pair 130.

The reinforcement part contact suppression structure has a structure that suppresses contact between the pair-side reinforcing part 232, the pair-movable block 70, and the pair-moving coupling part 130. The reinforcement part contact suppression structure has the length of the pair side reinforcement part 232 included in an appropriate length range as an example. As an example, the length of the pair-side reinforcing portion 232 is defined by the distance from the end portion on the protruding direction DXL side of the pair-side reinforcing portion 232 in the movable direction DX to the end portion on the pull-in direction DXR side of the pair-side reinforcing portion 232. be able to.

The reinforcement part contact suppression structure has the length of the pair side reinforcement part 232 shorter than the length of the output side reinforcement part 231 as an example of the length included in the appropriate length range. As an example of this length, the reinforcing portion contact suppression structure has a length from the coupling portion base portion 221 to a location closer to the protruding direction DXL than the pair movable block 70. As an example of this length, the reinforcing portion contact suppression structure has a length from the coupling portion base portion 221 to a location adjacent to the protruding side connecting component 80.

Reinforcing part contact suppression structure has the following effects. Since the pair-side reinforcing portion 232 has a length included in the appropriate length range, a space (hereinafter referred to as “contact suppression space”) is formed between the pair-movable block 70 and the pair-moving coupling portion 130. Since the pair-side reinforcing portion 232 has the length of the pair-side reinforcing portion 232 that is shorter than the length of the output-side reinforcing portion 231, a larger contact suppression space is formed. Since the pair-side reinforcing portion 232 has a length from the coupling portion base portion 221 to a portion on the protruding direction DXL side with respect to the pair movable block 70, a larger contact suppression space is formed. Since the pair-side reinforcing portion 232 has a length from the coupling portion base portion 221 to a portion adjacent to the protruding-side connecting component 80, a larger contact suppression space is formed. For this reason, the pair-side reinforcing portion 232 is unlikely to come into contact with the pair-movable block 70 and the pair-moving coupling portion 130 when reciprocating in the movable direction DX.

The configuration of the internal structure protection unit 240 will be described.
For a description of the internal structure protection unit 240, refer mainly to FIGS. The internal structure protection unit 240 has a structure that suppresses damage to the internal structure of the electric linear actuator 40 due to the force acting on the output shaft 20. The internal structure protection unit 240 receives the force acting on the output shaft 20 in cooperation with the main body side protection unit 32 of the main body case 30, thereby suppressing damage to the internal structure. The internal structure of the electric linear actuator 40 includes a block coupling component 100, a component formed integrally with the block coupling component 100, and a component coupled to the block coupling component 100 inside the block coupling component 100.

The internal structure protection unit 240 has a structure integrated with the output functional component 200 as an example. The internal structure protection unit 240 includes a push movement restriction part 241, a pulling movement restriction part 242, a first rotation restriction part 243, and a second rotation restriction part 244.

The main body side protection part 32 forms a part of the main body case 30. The main body side protection part 32 is integrally formed of the same material as the case peripheral wall part 31. The main body side protection unit 32 includes a main body side push restricting portion 33, a main body side pulling restricting portion 34, and a main body side rotation restricting portion 35. The main body side rotation restricting portion 35 includes a main body side first restricting portion 35A and a main body side second restricting portion 35B (see FIG. 18).

The push movement restricting portion 241 has a structure shown in FIG. 17 as an example. The push movement restricting portion 241 is continuous with the end portion on the bottom surface direction DYB side of the output side reinforcing portion 231. The push movement restricting portion 241 is coupled to the output side reinforcing portion 231. The push movement restricting portion 241 is disposed at a position closer to the protruding direction DXL than the main body push restricting portion 33 in the movable direction DX. The push movement restricting portion 241 faces the main body push restricting portion 33 in the movable direction DX. The push movement restricting portion 241 forms a gap with the main body side push restricting portion 33.

When the load that moves the output shaft 20 in the pull-in direction DXR acts on the output shaft 20, the push movement restricting portion 241 receives the load acting on the output shaft 20 by contacting with the main body side push restricting portion 33. In other words, the push movement restricting portion 241 receives a load in the push direction from the output shaft 20 to the block coupling component 100 by contacting the main body case 30 (here, the main body side push restricting portion 33). For this reason, damage to the internal structure of the electric linear actuator 40 due to the load in the pull-in direction DXR (push-in direction) acting on the output shaft 20 is suppressed. The gap between the push movement restricting portion 241 and the main body side push restricting portion 33 is such that the push movement restricting portion 241 and the main body side push restricting portion 33 come into contact with each other before the internal structure is damaged due to the load in the pull-in direction DXR. It has a size within the range.

The pulling movement restricting unit 242 has a structure shown in FIG. 17 as an example. The drawing movement restricting portion 242 is continuous with the end portion on the bottom surface direction DYB side of the output side reinforcing portion 231. The drawing movement restricting portion 242 is coupled to the output side reinforcing portion 231. The pulling movement restricting portion 242 is disposed at a position closer to the pulling direction DXR than the main body pulling restricting portion 34 in the movable direction DX. The pulling movement restricting portion 242 faces the pulling movement restricting portion 242 in the movable direction DX. The pulling movement restricting portion 242 forms a gap with the main body side pulling restricting portion 34.

When the load that moves the output shaft 20 in the protruding direction DXL acts on the output shaft 20, the pulling movement restricting portion 242 receives the load acting on the output shaft 20 by contacting with the body-side pulling restricting portion 34. In other words, the pulling movement restricting portion 242 receives a load in the pulling direction from the block coupling component 100 to the output shaft 20 by contacting the main body case 30 (here, the main body side pulling restricting portion 34). For this reason, it is suppressed that the internal structure of the electric linear actuator 40 is damaged due to the load in the protruding direction DXL (pulling direction) acting on the output shaft 20. The clearance between the pulling movement restricting portion 242 and the main body side pulling restricting portion 34 is such that the pulling movement restricting portion 242 and the main body side pulling restricting portion 34 come into contact with each other before the internal structure is damaged due to the load in the protruding direction DXL. It has a size within the range.

The first rotation restricting portion 243 has a structure shown in FIG. 18 as an example. The first rotation restricting portion 243 is formed on the outer peripheral portion of the component receiving portion 260. The first rotation restricting portion 243 has a planar outer surface. The first rotation restricting portion 243 faces the main body side first restricting portion 35A in the planar direction. The first rotation restricting portion 243 forms a gap with the main body side first restricting portion 35A.

When the force that rotates the output shaft 20 around the center line is applied to the output shaft 20, the first rotation restricting portion 243 makes contact with the main body side first restricting portion 35 </ b> A, thereby generating the rotational force that acts on the output shaft 20. receive. For this reason, it is suppressed that the internal structure of the electric linear actuator 40 is damaged due to the rotational force acting on the output shaft 20. The clearance between the first rotation restricting portion 243 and the main body side first restricting portion 35 </ b> A causes the first rotation restricting portion 243 and the main body side first restriction before the internal structure is damaged due to the rotational force of the output shaft 20. The portions 35A have a size within a range where they are in contact with each other.

The second rotation restricting portion 244 has a structure shown in FIG. 18 as an example. The second rotation restricting portion 244 is formed on the outer peripheral portion of the coupling portion peripheral wall portion 223. The second rotation restricting portion 244 has a planar outer surface. The second rotation restricting portion 244 faces the main body side second restricting portion 35B in the plane direction. The second rotation restricting portion 244 forms a gap with the main body side second restricting portion 35B.

When the force that rotates the output shaft 20 around the center line is applied to the output shaft 20, the second rotation restricting portion 244 comes into contact with the main body-side second restricting portion 35 </ b> B, thereby generating the rotational force that acts on the output shaft 20. receive. For this reason, it is suppressed that the internal structure of the electric linear actuator 40 is damaged due to the rotational force acting on the output shaft 20. The gap between the second rotation restricting portion 244 and the main body side second restricting portion 35B causes the second rotation restricting portion 244 and the main body side second restricting portion before the internal structure is damaged due to the rotational force of the output shaft 20. The portions 35B have a size within a range where they contact each other. As an example, the gap between the second rotation restricting portion 244 and the main body side second restricting portion 35B has a size corresponding to the gap between the first rotation restricting portion 243 and the main body side first restricting portion 35A. The gaps having a corresponding relationship include the amount of rotation until the first rotation restricting portion 243 and the main body side first restricting portion 35A come into contact with each other, and the second rotation restricting portion 244 and the main body side second restricting portion 35B in contact with each other. The amount of rotation until it is made substantially equal.

The extraction movement restricting portion 242 also has a function as a rotation restricting portion that receives the rotational force of the output shaft 20. The pulling movement restricting portion 242 has a structure shown in FIG. 19 as an example. The drawing movement restricting portion 242 has a planar outer surface. The drawing movement restricting portion 242 faces the main body side rotation restricting portion 35 in the plane direction. The pull-out movement restricting portion 242 forms a gap with the main body side rotation restricting portion 35.

When the force that rotates the output shaft 20 around the center line is applied to the output shaft 20, the pulling movement restricting portion 242 receives the rotational force that acts on the output shaft 20 by contacting the main body side rotation restricting portion 35. For this reason, it is suppressed that the internal structure of the electric linear actuator 40 is damaged due to the rotational force acting on the output shaft 20. The clearance between the pulling movement restricting portion 242 and the main body side rotation restricting portion 35 is such that the pulling movement restricting portion 242 and the main body side rotation restricting portion 35 are mutually connected before the internal structure is damaged due to the rotational force of the output shaft 20. It has a size within the contact area. As an example, the gap between the extraction movement restricting portion 242 and the main body side rotation restricting portion 35 has a size corresponding to the gap between the first rotation restricting portion 243 and the main body side first restricting portion 35A. The gaps having a corresponding relationship are the amount of rotation until the first rotation restricting portion 243 and the main body side first restricting portion 35A come into contact with each other, and until the extraction movement restricting portion 242 and the main body side rotation restricting portion 35 come into contact with each other. Is substantially equal to the rotation amount.

The configuration of the load receiving unit 250 will be described.
Refer to FIGS. 4 to 6 and FIG. 16 mainly for the description of the load receiving unit 250. The load receiving portion 250 has an annular shape. The outer peripheral surface of the load receiving portion 250 has a curved surface similar to a spherical surface. A curved surface similar to a spherical surface is similar to an outer peripheral surface formed by one round of a band-shaped portion including a maximum diameter portion of a sphere. The load receiving portion 250 is coupled to the coupling portion peripheral wall portion 223. The load receiving portion 250 is formed on the outer periphery of the coupling portion peripheral wall portion 223. The load receiving portion 250 protrudes from the coupling portion peripheral wall portion 223 in the planar direction. The load receiving portion 250 has a structure that receives a load acting on the output shaft 20. When receiving a load that tilts the output shaft 20 with respect to the center line of the main body case 30, the load receiving portion 250 receives this load by contacting the case load receiving portion 37 of the main body case 30. Since the load receiving portion 250 has a curved surface similar to a spherical surface, it is difficult to form a nonuniform surface pressure distribution on the case load receiving portion 37.

The structure of the component receiving part 260 is demonstrated.
Refer to FIGS. 4 to 6 and FIG. 16 mainly for the description of the component receiving portion 260. The component receiving part 260 has a shape similar to an annular shape. The component receiving part 260 is coupled to the coupling part peripheral wall part 223. The component receiving portion 260 is formed on the outer periphery of the coupling portion peripheral wall portion 223. The component receiving portion 260 protrudes from the coupling portion peripheral wall portion 223 in the planar direction. The component receiving part 260 is formed at a location closer to the protruding direction DXL in the movable direction DX than the load receiving part 250. The component receiving portion 260 is formed at a position on the most protruding direction DXL side of the electric linear actuator 40 in the movable direction DX. The component receiving unit 260 has a component receiving surface 261. The component receiving portion 260 has a structure that supports the elastic component 16 of the electric device main body 11 by the component receiving surface 261.

The elastic component 16 is made of an elastic material. The elastic part 16 has a shape similar to a cylindrical shape. The elastic component 16 is fitted in the fitting groove 23 of the output shaft 20. The elastic component 16 has a structure that seals a portion between the opening portion of the main body case 30 and the output shaft 20.

The component receiving surface 261 has a planar shape. The component receiving surface 261 is parallel to the planar direction. The component receiving surface 261 forms a surface of a portion on the protruding direction DXL side in the component receiving portion 260. The component receiving surface 261 is in contact with the elastic component 16. The component receiving surface 261 supports the elastic component 16 from the drawing direction DXR side, thereby restricting the elastic component 16 from moving to the drawing direction DXR side with respect to the output shaft 20.

The parts receiver 260 has the following effects. The component receiver 260 supports the elastic component 16. For this reason, it is suppressed that the sealing performance of the main body case 30 falls because the position of the elastic component 16 with respect to the output shaft 20 changes. The component receiving portion 260 has an advantageous effect as compared with the structure of the comparative example that supports the elastic component 16.

The structure of the comparative example supports the elastic component 16 with a retaining ring. The structure of the comparative example has a retaining ring fitting groove on the output shaft 20 into which a retaining ring is fitted. The retaining ring fitting groove is formed closer to the drawing direction DXR than the fitting groove 23. The retaining ring is fitted into the retaining ring fitting groove. The retaining ring supports the elastic component 16 from the drawing direction DXR side. The structure of the comparative example requires a retaining ring and a retaining ring fitting groove.

The component receiving part 260 makes it possible to omit the retaining ring and the retaining ring fitting groove. Since the output shaft vibration type electric device 10 has the component receiving portion 260, the retaining ring and the retaining ring fitting groove are omitted. For this reason, the man-hour of the process with respect to the output shaft 20 is reduced. Moreover, the process of fitting the retaining ring with the retaining ring fitting groove is reduced. For this reason, the component receiving part 260 contributes to the improvement of the manufacturing efficiency of the output shaft vibration type electric apparatus 10.

The configuration of the kinematic function component 300 will be described.
For the description of the functional component 300 for pairs, mainly refer to FIGS. 3, 4, 6, 7, and 9. The kinematic function component 300 is arranged at a position closer to the drawing direction DXR than the output function component 200 in the movable direction DX. The paired functional component 300 is arranged at a location on the top surface direction DYT side of the block coupling component 100 in the height direction DY. The functional component 300 for pairs is arranged in the width direction DZ from a location on the front direction DZF side to a location on the back direction DZR side of the block coupling component 100.

The functional component 300 for a pair is made of a metal material. The paired functional component 300 has a longitudinal portion in the movable direction DX. The even-numbered functional component 300 has a short portion in the width direction DZ. The paired functional component 300 is coupled to the pair movable coupling portion 130 by a plurality of fastening components 41. The paired functional component 300 and the pair movable joint 130 have an integrated relationship. The kinematic function component 300 has a structure in which a plurality of component components are integrally formed of the same metal material. The plurality of component component parts of the kinematic function component 300 includes a kinematic component main body 310 and a kinematic component adjusting unit 320. The paired functional component 300 has a structure divided into a paired component main body 310 and a paired component adjusting unit 320. As an example, the functional component 300 for pairs is formed by bending a plate material. Preferably, the kinematic pair functional component 300 forms a vibration reduction structure together with the additional adjustment component 400.

The kinematic part main body 310 has a flat plate shape. The paired component main body 310 is disposed on the top surfaces of the output movable coupling portion 120 and the pair movable coupling portion 130. The output component main body 210 is coupled to the pair movable coupling unit 130 by a plurality of fastening components 41. The kinematic part main body 310 forms the basic part of the kinematic function component 300.

The kinematic part adjustment unit 320 has a flat plate shape. The kinematic part adjustment unit 320 is arranged at a position closer to the drawing direction DXR than the drawing side connecting part 90 in the movable direction DX. That is, the even-part adjusting unit 320 is arranged on the drawing direction DXR side with respect to the pair movable block 70. The even-part adjusting unit 320 faces the drawing-side connecting component 90 through a gap in the movable direction DX. The even-part adjusting unit 320 is coupled to the additional adjusting part 400. The even-part adjusting unit 320 has a structure for balancing the weight of the function coupling unit including the output movable block 60 and the weight of the functional coupling unit including the pair movable block 70.

The configuration of the additional adjustment component 400 will be described.
3 and 15 will be mainly referred to for the explanation regarding the additional adjustment component 400. The additional adjustment component 400 is made of a metal material. The additional adjustment component 400 has a cylindrical shape. Preferably, the additional adjustment component 400 is formed separately from the pair function component 300. The additional adjustment component 400 is coupled to the counter component adjustment unit 320 by bonding. The additional adjustment component 400 is disposed at a position closer to the projecting direction DXL than the counter component adjustment unit 320 in the movable direction DX. A part of the additional adjustment component 400 is disposed in the connection component space 93. The additional adjustment component 400 has a structure for balancing the weight of the function coupling portion including the output movable block 60 and the weight of the function coupling portion including the even-number movable block 70.

The vibration reducing structure will be described.
For the description of the vibration reducing structure, mainly refer to FIGS. The vibration reduction structure has a first vibration reduction structure and a second vibration reduction structure. When there is no vibration reduction structure, undesirable vibrations may occur in the electric linear actuator 40. The reason is described below.

The output movable block 60 is coupled to the output functional component 200. The output functional component 200 is coupled to the output shaft 20. For this reason, the output movable block 60 receives a load from the output functional component 200 and the output shaft 20. The first vibration reducing structure balances the load applied to the output movable block 60 and the pair movable block 70. In other words, when there is no first vibration reduction structure, the load applied to the output movable block 60 and the pair movable block 70 may become unbalanced. When the load applied to the output movable block 60 and the pair movable block 70 is unbalanced, an undesirable vibration may occur in the electric linear actuator 40 due to the inertial force of the output movable block 60.

In this example, the first vibration reduction structure balances the load applied to the functional coupling unit including the output movable block 60 and the load applied to the functional coupling unit including the even-moving movable block 70, so that the electric linear actuator 40 Suppresses undesirable vibrations. As an example, the first vibration reduction structure is formed by an even-numbered functional component 300 and an additional adjustment component 400.

In the first vibration reduction structure, the functional component 300 for the pair is coupled to the pair movable block 70, whereby the load applied to the functional coupling portion including the output movable block 60 and the load applied to the functional coupling portion including the pair movable block 70 are To balance. In this example, the first vibration reduction structure balances the weight of the functional coupling portion including the output movable block 60 and the weight of the functional coupling portion including the even-moving movable block 70, thereby reducing the load applied to both functional coupling portions. Balance. The first vibration reduction structure eliminates the weight imbalance caused by the weight of the output shaft 20 mainly by the counter-part adjustment unit 320 and the additional adjustment component 400.

The output movable block 60, the output movable coupling portion 120, the output functional component 200, and the output shaft 20 form one functional coupling portion. The pair movable block 70, the pair movable coupling portion 130, the pair functional component 300, and the additional adjustment component 400 form one functional coupling portion.

The functional coupling portion including the output movable block 60 and the functional coupling portion including the pair movable block 70 are balanced in the load acting on each functional coupling portion due to the presence of the first vibration reduction structure. For this reason, when the output movable block 60 and the pair movable block 70 reciprocate, the electric linear actuator 40 hardly generates undesirable vibrations.

The electric linear actuator 40 can generate a moment (hereinafter, “output side moment”) by the reciprocating motion of the output movable block 60. This output side moment affects the magnitude of the unwanted vibration. Further, the electric linear actuator 40 can generate a moment (hereinafter referred to as “an even-side moment”) by the reciprocating motion of the even-movable movable block 70. This counter-moment affects the magnitude of unwanted vibration. The second vibration reduction structure suppresses undesired vibration that may occur due to the output side moment and the even side moment. In other words, when there is no second vibration reducing structure, there is a possibility that undesirable vibrations may occur in the electric linear actuator 40 due to the output side moment and the even side moment.

The second vibration reduction structure reduces unwanted vibration caused by each moment by reducing the distance between the center of gravity of the function coupling unit including the output movable block 60 and the center of gravity of the function coupling unit including the even-numbered movable block 70. To reduce. In this example, the second vibration reduction structure offsets the distance by making the total weight of the pair adjustment component 320 and the additional adjustment component 400 larger than the weight of the pair main body 310. ing. In other words, the second vibration reduction structure increases the degree to which the output side moment and the even side moment cancel each other. For this reason, when the output movable block 60 and the pair movable block 70 reciprocate, the electric linear actuator 40 hardly generates undesirable vibrations.

The center of gravity of each of the function coupling portions has the following relationship as an example.
The electric linear actuator 40 is along the center line of the coupling portion of the output shaft coupling portion 220 extending in the axial direction of the output shaft 20 in the front view (see FIG. 5) or the rear view (see FIG. 6) of the electric linear actuator 40. It includes a first segmented region and a second segmented region that are segmented. In FIG. 6, the first segment region is located on the top surface direction DYT side with respect to the coupling portion center line in the height direction DY. The second segmented region is located on the bottom surface direction DYB side with respect to the coupling portion center line in the height direction DY.

At least the even-numbered movable block 70 is arranged in the first section area. In this example, the output movable block 60 and the even movable block 70 are arranged in the first segment area. Preferably, the center of gravity of the function coupling unit including the output movable block 60 and the center of gravity of the function coupling unit including the pair movable block 70 are located in the first segment area. That is, it is preferable that the centers of gravity of both functional coupling portions are close to each other in the first segmented region.

A fixing structure of the electric linear actuator 40 will be described.
Refer mainly to FIG. 16 for the description regarding a fixing structure. The main body case 30 includes a plurality of case side coupling portions 36 and a plurality of fastening parts 17. The case side coupling portion 36 has a planar outer surface. The outer surface of the case side coupling portion 36 has a shape parallel to the coupling portion support surface 111 (see FIG. 4) of the fixing coupling portion 110. The outer surface of the case side coupling portion 36 is in surface contact with the coupling portion support surface 111.

The fixing coupling portion 110 on the protruding direction DXL side is coupled to one case side coupling portion 36 by the fastening component 17. The fixing coupling portion 110 on the drawing direction DXR side is coupled to the other case side coupling portion 36 by the fastening component 17. The fixing coupling part 110 and the case side coupling part 36 have an integrated relationship. The fixing coupling part 110 and the fixing block 50 have an integrated relationship. For this reason, the fixing block 50, the fixing coupling portion 110, and the case side coupling portion 36 have an integrated relationship.

The relationship between the fixing coupling portion 110 and the case side coupling portion 36 restricts the electric linear actuator 40 from being separated from the main body case 30 when a load is applied to the output shaft 20. As an example, the output shaft 20 receives a load including a component in a planar direction. The load received by the output shaft 20 is transmitted to the components of the electric linear actuator 40. The load received by the components of the electric linear actuator 40 acts in a direction in which the electric linear actuator 40 is tilted with respect to the center line of the main body case 30. The coupling relationship between the coupling part 110 for fixing and the case side coupling part 36 receives a load acting on the components of the electric linear actuator 40. For this reason, it is suppressed that the electric linear actuator 40 inclines with respect to the main body case 30. FIG. As described above, the coupling relationship between the fixing coupling portion 110 and the case side coupling portion 36 contributes to increasing the rigidity of the electric linear actuator 40 with respect to the load acting on the output shaft 20.

The operation of the electric linear actuator 40 will be described.
For the description of the operation, reference is mainly made to FIGS. The fixed block 50 forms a magnetic field when current is supplied from the control unit 14 to the coil 52. The output movable block 60 reciprocates in the movable direction DX by an electromagnetic force acting between the fixed block 50. The pair movable block 70 reciprocates in the movable direction DX by an electromagnetic force acting between the fixed block 50. The output movable block 60 and the pair movable block 70 reciprocate in opposite phases. The output functional component 200 reciprocates integrally with the output movable block 60. The output shaft 20 reciprocates integrally with the output functional component 200. Thus, the electric linear actuator 40 reciprocates the output shaft 20 by outputting the reciprocating motion of the output movable block 60.

The electric linear actuator 40 has the following effects.
(1) The electric linear actuator 40 has a protruding side connecting part 80 and a drawing side connecting part 90. The protruding side connecting part 80 and the drawing side connecting part 90 have different shapes. According to this structure, the freedom degree regarding the structure of each

connection component

80 and 90 is raised. For this reason, it is compatible to form a preferable form of resonance driving and to prevent the electric linear actuator 40 from being enlarged due to the structure of the connecting

parts

80 and 90.

(2) The thickness of the protruding side connecting part 80 is thinner than the thickness of the drawing side connecting part 90. According to this configuration, the protruding side connecting component 80 is unlikely to contact the output functional component 200. For this reason, the protrusion side connection component 80 is hard to be damaged.

(3) The protruding side connecting component 80 has an asymmetric shape with respect to the center line in the width direction DZ in a side view of the electric linear actuator 40 on the protruding direction DXL side. According to this structure, the freedom degree regarding the structure of the protrusion side connection component 80 is raised. For this reason, ensuring the preferable intensity | strength of the protrusion side connection component 80 and suppressing the enlargement of the electric linear actuator 40 resulting from the structure of the protrusion side connection component 80 are compatible.

(4) The electric linear actuator 40 has an even-numbered functional component 300. According to this configuration, the load of the output movable block 60 and the pair movable block 70 can be balanced. For this reason, generation | occurrence | production of the undesirable vibration of the electric linear actuator 40 is suppressed.

(5) The electric linear actuator 40 has a block coupling component 100. The block coupling component 100 has a structure in which a plurality of constituent parts are integrally formed of a resin material. The protruding side connecting part 80 and the drawing side connecting part 90 are integrally formed with the block connecting part 100 by a resin material. According to this configuration, the productivity of the block coupling component 100, the protruding side coupling component 80, and the drawing side coupling component 90 is improved.

(6) The block coupling component 100 has a coupling portion support surface 111. The coupling portion support surface 111 is coupled to the case side coupling portion 36 of the main body case 30. The joint support surface 111 receives the load of the output shaft 20 in cooperation with the case side joint 36. According to this configuration, a load acting on the output shaft 20 from the outside is received by the coupling portion support surface 111 and the case side coupling portion 36. For this reason, it is suppressed that the electric linear actuator 40 inclines with respect to the centerline of the main body case 30 resulting from the load which acts on the output shaft 20. FIG.

(7) The output functional component 200 includes an output shaft coupling portion 220. According to this configuration, the output shaft 20 is coupled by the output shaft coupling portion 220. For this reason, the output shaft 20 is appropriately held.

(8) The output shaft coupling portion 220 has a coupling portion peripheral wall portion 223. The coupling portion peripheral wall portion 223 has a structure that supports the outer peripheral portion of the output shaft 20. According to this configuration, the area of the portion that holds the output shaft 20 is increased. For this reason, the effect that the output shaft 20 is appropriately held is further enhanced.

(9) The connecting portion peripheral wall portion 223 protrudes from the connecting portion base surface 222 toward the protruding direction DXL. According to this configuration, the range of adjustment related to the length of the coupling portion peripheral wall portion 223 in the movable direction DX is increased. For this reason, it is possible to further enhance the effect of appropriately holding the output shaft 20.

(10) The output functional component 200 has a load receiving portion 250. According to this configuration, the load acting on the output shaft 20 from the outside is received by the load receiving portion 250 and the case load receiving portion 37. For this reason, it is suppressed that the electric linear actuator 40 inclines with respect to the centerline of the main body case 30 resulting from the load which acts on the output shaft 20. FIG.

(11) The load receiving portion 250 has a curved surface similar to a spherical surface. According to this configuration, it is difficult for the load receiving portion 250 to form a nonuniform surface pressure distribution on the case load receiving portion 37. For this reason, the load acting on the output shaft 20 is stably received by the load receiving portion 250.

(12) The output functional component 200 has a component receiving portion 260. According to this configuration, the elastic component 16 of the electric device main body 11 is restricted from moving with respect to the output shaft 20. For this reason, the fall of the sealing performance by the elastic component 16 is suppressed.

(13) The output functional component 200 has an output component reinforcing portion 230. The output component reinforcing portion 230 has a structure that reinforces the output component main body portion 210 and the output shaft coupling portion 220. According to this configuration, the output functional component 200 is prevented from being damaged due to the load acting on the output shaft 20.

(14) The output functional component 200 includes an output side reinforcing portion 231 as the output component reinforcing portion 230. The output side reinforcing portion 231 is adjacent to the output movable block 60. The output side reinforcement portion 231 moves integrally with the output movable block 60. For this reason, there is little possibility that the output side reinforcement part 231 contacts the output movable block 60. For this reason, the physique of the output side reinforcement part 231 can be enlarged. For this reason, the output-side reinforcing portion 231 contributes to increasing the strength of the output functional component 200.

(15) The output functional component 200 includes a pair-side reinforcing portion 232 as the output component reinforcing portion 230. The pair-side reinforcing portion 232 is adjacent to the pair movable block 70. According to this configuration, the strength of the output functional component 200 is increased.

(16) The output functional component 200 has a push movement restricting portion 241 as the internal structure protecting portion 240. The push movement restricting portion 241 receives a load in the push direction from the output shaft 20 to the block coupling component 100 by contacting the main body side push restricting portion 33 of the main body case 30. According to this configuration, damage to the internal structure of the electric linear actuator 40 due to the load acting on the output shaft 20 is suppressed.

(17) The output functional component 200 has a drawing movement restricting portion 242 as the internal structure protecting portion 240. The pulling movement restricting portion 242 receives a load in the pulling direction from the block coupling component 100 to the output shaft 20 by contacting the main body side pulling restricting portion 34 of the main body case 30. According to this configuration, damage to the internal structure of the electric linear actuator 40 due to the load acting on the output shaft 20 is suppressed.

(18) The output functional component 200 has a first rotation restricting portion 243 as the internal structure protecting portion 240. The first rotation restricting portion 243 receives a rotational force acting on the output shaft 20 by contacting the main body side first restricting portion 35 </ b> A of the main body case 30. According to this configuration, damage to the internal structure of the electric linear actuator 40 due to the rotational force acting on the output shaft 20 is suppressed.

(19) The even-numbered functional component 300 includes an even-numbered component main body 310 and an even-numbered component adjusting unit 320. The kinematic component main part 310 and the kinematic component adjusting unit 320 are integrally formed of the same material. According to this structure, the man-hour at the time of manufacture is reduced compared with the case where the kinematic component main-body part 310 and the kinematic component adjustment part 320 are formed separately.

(20) The electric linear actuator 40 has an additional adjustment component 400. The additional adjustment component 400 is coupled to the even component adjustment unit 320. According to this configuration, the position of the center of gravity of the kinematic movable block 70 can be adjusted by changing the weight of the additional adjustment component 400. For this reason, the freedom degree regarding adjusting a gravity center position is raised.

(21) The additional adjustment component 400 is arranged at a position closer to the pair movable block 70 than the pair adjustment component 320 in the movable direction DX. According to this configuration, the physique in the longitudinal direction of the electric linear actuator 40 becomes smaller as compared with the case where the additional adjustment component 400 is disposed at a position closer to the drawing direction DXR than the counter component adjustment unit 320.

(22) The weight of the additional adjustment component 400 is larger than the weight of the even component main body 310. According to this configuration, the distance between the center of gravity of the function coupling unit including the output movable block 60 and the center of gravity of the function coupling including the even-numbered movable block 70 can be reduced. For this reason, generation | occurrence | production of the undesirable vibration of the electric linear actuator 40 is suppressed.

(Second Embodiment)
The electric linear actuator 40 of the second embodiment differs from the electric linear actuator 40 of the first embodiment in the following points, and has the same configuration as the electric linear actuator 40 of the first embodiment in other points. The electric linear actuator 40 of the first embodiment has a configuration shown in FIG. On the other hand, the electric linear actuator 40 of 2nd Embodiment has the structure shown by FIG. In the description of the electric linear actuator 40 of the second embodiment, the same reference numerals are given to the same components as those of the electric linear actuator 40 of the first embodiment, and a part or all of the description of the common components is omitted.

For the description of the electric linear actuator 40 of the second embodiment, refer mainly to FIG. The output shaft coupling portion 220 of the electric linear actuator 40 has a coupling portion extension 225.

The connecting portion extension 225 has a column shape. The joint extension 225 is continuous with the joint base 221. The connecting portion extension 225 protrudes from the surface of the connecting portion base portion 221 opposite to the connecting portion base surface 222 toward the pull-in direction DXR. The connecting portion extension 225 is located in a connecting part space 83 formed on the inner peripheral side of the protruding side connecting part 80. That is, a part of the output shaft coupling portion 220 is disposed in the connecting part space 83. The joint extension 225 forms a part of the joint inner space 224. The coupling portion inner space 224 is formed across the coupling portion peripheral wall portion 223, the coupling portion base portion 221, and the coupling portion extension 225.

The connecting portion peripheral wall portion 223, the connecting portion base portion 221 and the connecting portion extension portion 225 accommodate the shaft base portion 21 in the connecting portion inner space 224. The connecting part peripheral wall part 223, the connecting part base part 221, and the connecting part extension part 225 are connected to the shaft base part 21. The connecting part peripheral wall part 223, the connecting part base part 221, and the connecting part extension part 225 have a structure surrounding the outer periphery of the shaft base part 21.

The electric linear actuator 40 of the second embodiment has the same effects as the effects (1) to (22) of the electric linear actuator 40 of the first embodiment. Moreover, the electric linear actuator 40 of 2nd Embodiment has the following effects.

(23) The output functional component 200 includes a coupling portion extension 225. According to this configuration, the area of the portion that holds the output shaft 20 in the output shaft coupling portion 220 becomes larger. For this reason, the effect that the output shaft 20 is appropriately held is further enhanced.

(Third embodiment)
The electric linear actuator 40 of the third embodiment is different from the electric linear actuator 40 of the first embodiment in the following points, and has the same configuration as the electric linear actuator 40 of the first embodiment in other points. The electric linear actuator 40 of the first embodiment has a configuration shown in FIG. The vibration reduction structure according to the first embodiment includes an even-part adjusting unit 320 and an additional adjusting component 400. On the other hand, the electric linear actuator 40 of 3rd Embodiment has the structure shown by FIG. In the vibration reduction structure of the third embodiment, the additional adjustment component 400 is omitted, and the first deformation adjustment unit 330 is provided. In the description of the electric linear actuator 40 of the third embodiment, the same reference numerals are given to the same components as those of the electric linear actuator 40 of the first embodiment, and a part or all of the description of the common components is omitted.

21. The description of the electric linear actuator 40 according to the third embodiment will mainly refer to FIG. This electric linear actuator 40 omits the additional adjustment component 400 of the first embodiment. The kinematic component 300 has a first deformation adjustment unit 330 instead of the kinematic component adjustment unit 320. The first deformation adjustment unit 330 also functions as an even component adjustment unit. The 1st deformation | transformation adjustment part 330 has thickness thicker than the thickness of the pair component adjustment part 320 of 1st Embodiment. The first deformation adjusting unit 330 has a weight larger than that of the paired component main body 310. The 1st deformation | transformation adjustment part 330 has a weight larger than the weight of the pair component adjustment part 320 of 1st Embodiment. The first deformation adjustment unit 330 has the same weight as the combined weight of the counter component adjustment unit 320 of the first embodiment and the weight of the additional adjustment component 400 of the first embodiment.

The functional component 300 for pairs of the third embodiment forms a first vibration reduction structure and a second vibration reduction structure similar to the first vibration reduction structure and the second vibration reduction structure of the first embodiment. This indicates that it is not essential to use the additional adjustment component 400 to form the first vibration reduction structure and the second vibration reduction structure. The first vibration reduction structure can be formed by various structures that balance the weight of the functional coupling portion including the output movable block 60 and the weight of the functional coupling portion including the pair movable block 70. The second vibration reduction structure can be formed by various structures that reduce the distance between the center of gravity of the function coupling unit including the output movable block 60 and the center of gravity of the function coupling unit including the pair movable block 70.

The electric linear actuator 40 of the third embodiment has the same effects as the effects (1) to (22) produced by the electric linear actuator 40 of the first embodiment. Moreover, the electric linear actuator 40 of 3rd Embodiment has the following effects.

(24) The electric linear actuator 40 omits the additional adjustment component 400 of the first embodiment. According to this structure, the man-hour at the time of manufacture is reduced. For this reason, it is compatible to form a vibration reducing structure and to improve manufacturing efficiency.

(Fourth embodiment)
The electric linear actuator 40 of the fourth embodiment is different from the electric linear actuator 40 of the first embodiment in the following points, and has the same configuration as the electric linear actuator 40 of the first embodiment in other points. The electric linear actuator 40 of the first embodiment has a configuration shown in FIG. The electric linear actuator 40 of the first embodiment has a first vibration reduction structure and a second vibration reduction structure. On the other hand, the electric linear actuator 40 of 4th Embodiment has the structure shown by FIG. The electric linear actuator 40 of the fourth embodiment has a first vibration reduction structure and a third vibration reduction structure. In the description of the electric linear actuator 40 of the fourth embodiment, the same reference numerals are given to the same components as those of the electric linear actuator 40 of the first embodiment, and a part or all of the description of the common components is omitted.

21. For the description of the electric linear actuator 40 of the fourth embodiment, mainly refer to FIG. This electric linear actuator 40 omits the additional adjustment component 400 of the first embodiment. The kinematic function component 300 includes a second deformation adjustment unit 340 instead of the kinematic component adjustment unit 320. The second deformation adjusting unit 340 also functions as an even component adjusting unit.

The second deformation adjusting unit 340 forms a third vibration reducing structure. The structure of the second deformation adjustment unit 340 corresponds to a structure in which the insertion hole (see FIG. 7) of the paired component adjustment unit 320 to which the additional adjustment component 400 of the first embodiment is coupled is filled. The second deformation adjustment unit 340 has the same thickness as the kinematic component adjustment unit 320. The second deformation adjusting unit 340 has a weight smaller than that of the paired component main body 310.

The third vibration reducing structure is not preferable due to the moment of the kinematic side by reducing the distance between the center of gravity of the function coupling unit including the kinematic movable block 70 (hereinafter referred to as the barycenter of the even side) and the center point of the kinematic side moment. Reduce the occurrence of vibration. The center point of the even-numbered moment is included in the range where the even-number pulling-in side coupling portion 134 (see FIG. 10) is arranged. The third vibration reducing structure offsets the distance to reduce the counter-side moment by making the weight of the paired component main body 310 larger than the weight of the second deformation adjusting unit 340. In this configuration, when the output movable block 60 and the pair movable block 70 reciprocate, undesirable vibrations are unlikely to occur in the electric linear actuator 40.

The even-point centroid and the center point of the even-side moment have the following relationship as an example.
The even-moving block 70 is disposed in the first segment area. The center of gravity of the function coupling portion including the kinematic movable block 70 (the even-side centroid) is located in the first segmented region. Since the even-side gravity center is located in the first segmented region, the distance between the even-side gravity center and the center point of the even-side moment is reduced.

The electric linear actuator 40 of the fourth embodiment has the same effects as the effects (1) to (21) of the electric linear actuator 40 of the first embodiment. Moreover, the electric linear actuator 40 of 4th Embodiment has the following effects.

(25) The even-numbered functional component 300 includes a second deformation adjustment unit 340. The second deformation adjustment unit 340 forms a third vibration reduction structure. The third vibration reduction structure reduces the counter-moment at the time of the reciprocating motion of the electric linear actuator 40 and suppresses the generation of undesirable vibrations.

(Other embodiments)
The output shaft vibration type electric device includes other embodiments different from the first to fourth embodiments. Other embodiments have, as an example, forms as modifications of the first to Xth embodiments shown below. Note that the following modifications can be combined with each other within a technically consistent range.

The electric linear actuator 40 of the first to fourth embodiments forms a preferable form of resonance driving by adjusting the thickness of the protruding side connecting part 80 and the thickness of the drawing side connecting part 90. However, the structure for forming a preferable form of resonance driving is not limited to the contents exemplified in each embodiment. As an example, the electric linear actuator according to the modification includes a path length of the connection component output side end 81 and the connection component pair side end 82, and a path length of the connection component output side end 91 and the connection component pair side end 92. Adjust. The projecting side connecting component and the drawing side connecting component of this modification form a preferable form of resonance driving by having different path lengths. That is, the projecting side connecting component and the drawing side connecting component have different shapes, thereby forming a preferable form of resonance driving.

The electric linear actuator 40 of the first embodiment to the fourth embodiment has a protruding side connecting component 80. However, the structure of the electric linear actuator 40 is not limited to the content exemplified in each embodiment. The electric linear actuator 40 of a modification has a deformation | transformation protrusion side connection component instead of the protrusion side connection component 80 as an example. The deformed protruding side connecting component has a function according to the function of the protruding side connecting component 80 and has a structure different from that of the protruding side connecting component 80.

The electric linear actuator 40 of the first to fourth embodiments has a pull-in side connecting component 90. However, the structure of the electric linear actuator 40 is not limited to the content exemplified in each embodiment. The electric linear actuator 40 of a modification has a deformation | transformation drawing side connection component instead of the drawing side connection component 90 as an example. The deformation drawing side connecting component has a function according to the function of the drawing side connecting component 90 and has a structure different from that of the drawing side connecting component 90.

In the first to fourth embodiments, the protruding-side connecting component 80 is integrally formed with the block coupling component 100 using the same resin material. However, the structure of the protrusion side connection component 80 is not restricted to the content illustrated by each embodiment. As an example, the protrusion-side connecting component 80 of the modification is formed separately from the block coupling component 100 and then coupled to the block coupling component 100. The projecting side connecting component 80 of this modification is formed of the same material as the block coupling component 100 or a different material.

In the first embodiment to the fourth embodiment, the lead-in side connecting component 90 is integrally formed with the block coupling component 100 using the same resin material. However, the structure of the drawing-in side connection component 90 is not limited to the content exemplified in each embodiment. As an example, the lead-in side coupling component 90 of the modification is formed separately from the block coupling component 100 and then coupled to the block coupling component 100. The lead-in side coupling component 90 of this modification is formed of the same or different resin material as the block coupling component 100.

The block coupling component 100 according to the first to fourth embodiments includes a coupling unit 110 for fixing. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. As an example, the block coupling component 100 according to the modification includes a deformation fixing coupling portion instead of the fixing coupling portion 110. The deformation fixing coupling part has a function according to the function of the fixing coupling part 110 and has a structure different from that of the fixing coupling part 110.

The block coupling component 100 of the first to fourth embodiments has a movable output coupling portion 120. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. As an example, the block coupling component 100 according to the modification has a modified output movable coupling portion instead of the output movable coupling portion 120. The deformable output movable coupling portion has a function according to the function of the output movable coupling portion 120 and has a structure different from that of the output movable coupling portion 120.

The block coupling component 100 of the first embodiment to the fourth embodiment has a pair 130 for coupling with movable pairs. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. As an example, the block coupling component 100 of the modified example has a modified pair movable coupling part instead of the pair movable coupling part 130. The deformation pair movable coupling part has a function according to the function of the pair movable coupling part 130, and has a structure different from that of the pair movable coupling part 130.

The block coupling component 100 according to the first to fourth embodiments has a protruding side support portion 140. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. As an example, the block coupling component 100 according to the modification includes a modified protrusion-side support portion instead of the protrusion-side support portion 140. The deformation protrusion side support portion has a function according to the function of the protrusion side support portion 140 and has a structure different from that of the protrusion side support portion 140.

The block coupling component 100 of the first to fourth embodiments has a pull-in side support part 150. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. As an example, the block coupling component 100 according to the modified example includes a modified retracting side support portion instead of the retracting side support portion 150. The deformation pull-in side support portion has a function according to the function of the pull-in side support portion 150 and has a structure different from that of the pull-in side support portion 150.

The block coupling component 100 of the first to fourth embodiments has two output side resin inlet portions 121. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, at least one of the two output side resin inlet portions 121 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation output side resin inlet part instead of the output side resin inlet part 121 as an example. The deformed output side resin inlet portion has a function according to the function of the output side resin inlet portion 121 and has a structure different from that of the output side resin inlet portion 121.

The block coupling component 100 of the first embodiment to the fourth embodiment has an output side resin flow path portion 122. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block connecting component 100 of the modified example, the output side resin flow path part 122 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation output side resin flow path part instead of the output side resin flow path part 122 as an example. The deformation output side resin flow path part has a function according to the function of the output side resin flow path part 122, and has a structure different from that of the output side resin flow path part 122.

The block coupling component 100 of the first embodiment to the fourth embodiment has an output protruding side connecting portion 123. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, the output protruding side connecting portion 123 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation output protrusion side connection part instead of the output protrusion side connection part 123 as an example. The modified output protruding side connecting portion has a function according to the function of the output protruding side connecting portion 123 and has a structure different from that of the output protruding side connecting portion 123.

The block coupling component 100 of the first embodiment to the fourth embodiment has an output drawing side connecting portion 124. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, the output lead-in side connecting portion 124 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation output drawing side connection part instead of the output drawing side connection part 124 as an example. The modified output lead-in side connecting portion has a function according to the function of the output lead-in side connecting portion 124 and has a structure different from that of the output lead-in side connecting portion 124.

The block coupling component 100 of the first embodiment to the fourth embodiment has two even-side resin inlet portions 131. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modification, at least one of the two counter-side resin inlet portions 131 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation pair side resin inlet part instead of the pair side resin inlet part 131 as an example. The deformed even-side resin inlet portion has a function according to the function of the even-side resin inlet portion 131 and has a structure different from that of the even-numbered resin inlet portion 131.

The block coupling component 100 of the first embodiment to the fourth embodiment has an even-side resin flow path portion 132. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, the even-side resin flow path portion 132 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation pair side resin flow path part instead of the pair connection resin flow path part 132 as an example. The deformed pair-side resin flow path portion has a function according to the function of the pair-side resin flow path portion 132 and has a structure different from that of the pair-side resin flow path portion 132.

The block coupling component 100 of the first embodiment to the fourth embodiment has an even-projecting-side coupling portion 133. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, the even-projecting side coupling portion 133 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation pair protrusion side connection part instead of the pair protrusion side connection part 133 as an example. The deformed pair projecting side connecting portion has a function according to the function of the pair projecting side connecting portion 133 and has a structure different from that of the pair projecting side connecting portion 133.

The block coupling component 100 of the first embodiment to the fourth embodiment has a pair pull-in side connecting portion 134. However, the structure of the block coupling component 100 is not limited to the content exemplified in each embodiment. In the block coupling component 100 of the modified example, the pair pull-in side connecting portion 134 is omitted. Moreover, the block coupling component 100 of another modification has a deformation | transformation pair drawing side connection part instead of the pair drawing side connection part 134 as an example. The modified pair pull-in side connecting portion has a function according to the function of the pair pull-in side connecting portion 134 and has a structure different from that of the pair pull-in side connecting portion 134.

The output functional component 200 of the first to fourth embodiments is made of a resin material. However, the material of the output functional component 200 is not limited to the content exemplified in each embodiment. The output functional component 200 of the modified example is formed of a metal material as an example.

The output functional component 200 according to the first to fourth embodiments is coupled to the output movable block 60 via the output movable coupling portion 120. However, the combination form of the output functional component 200 is not limited to the contents exemplified in each embodiment. As an example, the output functional component 200 of the modification is directly coupled to the output movable block 60. That is, the output functional component 200 may be operably coupled to the output movable block 60.

The output functional component 200 of the first to fourth embodiments has an output component main body 210. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. The output functional component 200 according to the modified example has a modified output component main body instead of the output component main body 210 as an example. The modified output component main body has a function according to the function of the output component main body 210 and has a structure different from that of the output component main body 210.

The output functional component 200 of the first to fourth embodiments has an output shaft coupling portion 220. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. The output functional component 200 of the modified example omits the output shaft coupling portion 220. Moreover, the output functional component 200 of another modification has a deformation | transformation output shaft coupling | bond part instead of the output shaft coupling | bond part 220 as an example. The modified output shaft coupling portion has a function according to the function of the output shaft coupling portion 220 and has a structure different from that of the output shaft coupling portion 220.

The output functional component 200 according to the first to fourth embodiments includes an output side reinforcing portion 231 as the output component reinforcing portion 230. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. The output functional component 200 of the modified example omits the output side reinforcing portion 231. Moreover, the output functional component 200 of another modification has a deformation | transformation output side reinforcement part instead of the output side reinforcement part 231 as an example. The deformed output side reinforcing portion has a function according to the function of the output side reinforcing portion 231 and has a structure different from that of the output side reinforcing portion 231. For example, the deformation output side reinforcing portion is configured to reinforce only the output component main body portion 210 or only the output shaft coupling portion 220. As described above, the output side reinforcing portion 231 may be configured to reinforce at least one of the output component main body portion 210 and the output shaft coupling portion 220.

The output functional component 200 according to the first to fourth embodiments includes a counter-side reinforcing portion 232 as the output component reinforcing portion 230. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 according to the modified example, the counter-side reinforcing portion 232 is omitted. Moreover, the output functional component 200 of another modified example has a modified pair-side reinforcing portion instead of the pair-side reinforcing portion 232 as an example. The deformed pair-side reinforcing portion has a function according to the function of the pair-side reinforcing portion 232 and has a structure different from that of the pair-side reinforcing portion 232.

The output functional component 200 according to the first to fourth embodiments includes a push movement restricting portion 241 as the internal structure protecting portion 240. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 of the modified example, the push movement restricting portion 241 is omitted. Moreover, the output functional component 200 of another modification has a deformation | transformation pushing movement control part instead of the pushing movement restriction part 241 as an example. The deformation push movement restricting portion has a function according to the function of the push movement restricting portion 241 and has a structure different from that of the push movement restricting portion 241.

The output functional component 200 according to the first embodiment to the fourth embodiment has a pulling movement restricting portion 242 as the internal structure protecting portion 240. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 of the modified example, the extraction movement restricting portion 242 is omitted. Moreover, the output functional component 200 of another modification has a deformation | transformation extraction movement control part instead of the extraction movement control part 242 as an example. The deformation pulling movement restricting portion has a function according to the function of the pulling movement restricting portion 242, and has a structure different from that of the pulling movement restricting portion 242.

The output functional component 200 of the first to fourth embodiments has a first rotation restricting portion 243 as the internal structure protecting portion 240. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 of the modified example, the first rotation restricting portion 243 is omitted. Moreover, the output functional component 200 of another modified example has a modified first rotation restricting portion instead of the first rotation restricting portion 243 as an example. The modified first rotation restricting portion has a function according to the function of the first rotation restricting portion 243 and has a structure different from that of the first rotation restricting portion 243.

The output functional component 200 according to the first to fourth embodiments includes the second rotation restricting portion 244 as the internal structure protecting portion 240. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 of the modification, the second rotation restricting portion 244 is omitted. Moreover, the output functional component 200 of another modified example has a modified second rotation restricting portion instead of the second rotation restricting portion 244 as an example. The modified second rotation restricting portion has a function according to the function of the second rotation restricting portion 244 and has a structure different from that of the second rotation restricting portion 244.

The output functional component 200 of the first to fourth embodiments has a load receiving portion 250. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the output functional component 200 of the modification, the load receiving unit 250 is omitted. Moreover, the output functional component 200 of another modification has a deformation | transformation load receiving part instead of the load receiving part 250 as an example. The deformed load receiving unit has a function according to the function of the load receiving unit 250 and has a structure different from that of the load receiving unit 250.

The output functional component 200 of the first to fourth embodiments has a component receiving portion 260. However, the structure of the output functional component 200 is not limited to the content exemplified in each embodiment. In the modified output functional component 200, the component receiving portion 260 is omitted. Moreover, the output functional component 200 of another modified example has a modified component receiving part instead of the component receiving part 260 as an example. The deformed component receiving unit has a function according to the function of the component receiving unit 260 and has a structure different from that of the component receiving unit 260.

In the first to fourth embodiments, the push movement restricting portion 241 forms a gap with the main body side push restricting portion 33. However, the structure of the push movement restricting unit 241 is not limited to the content exemplified in each embodiment. The push movement restricting portion 241 of the modified example does not form a gap with the main body side push restricting portion 33.

In the first to fourth embodiments, the pulling movement restricting portion 242 forms a gap with the main body pulling restricting portion 34. However, the structure of the extraction movement restricting unit 242 is not limited to the content exemplified in each embodiment. The pulling movement restricting portion 242 of the modified example does not form a gap with the main body side pulling restricting portion 34.

The pulling movement restricting portion 242 of the first to fourth embodiments forms a gap with the main body side rotation restricting portion 35. However, the structure of the extraction movement restricting unit 242 is not limited to the content exemplified in each embodiment. The pulling movement restricting portion 242 of the modified example does not form a gap with the main body side rotation restricting portion 35.

In the first to fourth embodiments, the first rotation restricting portion 243 forms a gap with the main body side first restricting portion 35A. However, the structure of the 1st rotation control part 243 is not restricted to the content illustrated by each embodiment. The first rotation restricting portion 243 of the modified example does not form a gap with the main body side first restricting portion 35A.

In the first to fourth embodiments, the second rotation restricting portion 244 forms a gap with the main body side second restricting portion 35B. However, the structure of the 2nd rotation control part 244 is not restricted to the content illustrated by each embodiment. The modified second rotation restricting portion 244 does not form a gap with the main body side second restricting portion 35B.

The gap between the pulling movement restricting portion 242 and the main body side rotation restricting portion 35 in the first to fourth embodiments corresponds to the gap between the first rotation restricting portion 243 and the main body side first restricting portion 35A. Have However, the size of the gap formed by each restricting

portion

242, 35 is not limited to the content exemplified in each embodiment. The gap formed by the restricting

portions

242 and 35 of the modification has a size that does not correspond to the gap between the restricting

portions

243 and 35A. The gaps having a non-corresponding relationship are the amounts of rotation until the extraction movement restricting portion 242 and the main body side rotation restricting portion 35 come into contact with each other, and the first rotation restricting portion 243 and the main body side first restricting portion 35A are in contact with each other. Increase or decrease the amount of rotation up to

The gap between the second rotation restricting portion 244 and the main body side second restricting portion 35B in the first to fourth embodiments corresponds to the gap between the first rotation restricting portion 243 and the main body side first restricting portion 35A. Have a size to However, the size of the gap formed by each restricting

portion

244, 35B is not limited to the content exemplified in each embodiment. The gap formed by the restricting

portions

244 and 35B of the modification has a size that does not correspond to the gap between the restricting

portions

243 and 35A. Each gap having a non-corresponding relationship indicates the amount of rotation until the second rotation restricting portion 244 and the main body side second restricting portion 35B contact each other, and the first rotation restricting portion 243 and the main body side first restricting portion 35A are mutually connected. Make it larger or smaller than the amount of rotation until contact.

The functional component 300 for a pair according to the first to fourth embodiments is made of a metal material. However, the material of the functional component 300 for pairs is not limited to the content illustrated in each embodiment. The paired functional component 300 of the modification is formed of a resin material as an example.

The functional component 300 for a pair according to the first to fourth embodiments is coupled to the pair movable block 70 via the pair movable coupling portion 130. However, the combination form of the functional component 300 for pairs is not restricted to the content illustrated by each embodiment. As an example, the functional component 300 for a pair of modifications is directly coupled to the pair movable block 70.

The functional component 300 for a pair according to the first to fourth embodiments includes a paired component main body 310. However, the structure of the kinematic function component 300 is not limited to the content exemplified in each embodiment. As an example, the functional component 300 for a pair of modifications includes a modified body part for a pair of parts instead of the body part 310 for a pair. The deformed pair component body has a function according to the function of the pair component body 310 and has a structure different from that of the pair component body 310.

The functional component 300 for a pair according to the first to fourth embodiments includes a pair component adjusting unit 320. However, the structure of the kinematic function component 300 is not limited to the content exemplified in each embodiment. As an example, the functional component 300 for a pair of modifications has a modified pair adjustment part instead of the pair adjustment part 320. The modified kinematic part adjustment unit has a function according to the function of the kinematic part adjustment unit 320 and has a structure different from that of the kinematic part adjustment unit 320.

The additional adjustment component 400 of the first to third embodiments is made of a metal material. However, the material of the additional adjustment component 400 is not limited to the content exemplified in each embodiment. For example, the additional adjustment component 400 of the modification is formed of a resin material.

The additional adjustment component 400 of the first to third embodiments is coupled to the counter component adjustment unit 320 by bonding. However, the method of coupling the additional adjustment component 400 is not limited to the content exemplified in each embodiment. As an example, the additional adjustment component 400 according to the modification is coupled to the mating component adjustment unit 320 by press-fitting or fastening components.

In the movable direction DX, the additional adjustment component 400 of the first to third embodiments is arranged at a position on the protruding direction DXL side with respect to the paired component adjustment unit 320. However, the arrangement form of the additional adjustment component 400 is not limited to the content exemplified in each embodiment. As an example, the additional adjustment component 400 of the modification is a portion on the pulling direction DXR side with respect to the even component adjusting portion 320, or a portion on both the protruding direction DXL side and the pulling direction DXR side with respect to the even component adjusting portion 320. Placed in.

The electric linear actuator 40 of the first to fourth embodiments causes the output movable block 60 and the pair movable block 70 to reciprocate by supplying current to the coil 52 of the fixed block 50. However, the configuration for reciprocating the output movable block 60 and the pair movable block 70 is not limited to the contents exemplified in each embodiment. The electric linear actuator according to the modification has one of the following forms (a) to (c) as an example.

(A) The first deformation linear actuator has a first deformation fixed block, a first deformation output movable block, and a first deformation pair block instead of the fixed block 50, the output movable block 60, and the pair movable block 70.

The first deformation fixed block has a permanent magnet and a back yoke. The first deformation fixed block is different from the output movable block 60 or the pair movable block 70 in that it is fixed to the main body case 30, and has a structure similar to the output movable block 60 or the pair movable block 70 in other points.

The first deformation output movable block has a coil and a core. The first deformable output movable block is different from the fixed block 50 in that it reciprocates in the movable direction DX with respect to the main body case 30, and has a configuration similar to the fixed block 50 in other points.

The first deformation pair movable block has a coil and a core. The first deformable pair movable block differs from the fixed block 50 in that it reciprocates in the movable direction DX with respect to the main body case 30, and has a configuration similar to the fixed block 50 in other points.

The first deformation linear actuator supplies current to the first deformation output movable block and the first deformation pair movable block when outputting the reciprocating motion. Each movable block reciprocates in the movable direction DX with respect to the first deformation fixed block by an electromagnetic force acting between the first deformation fixed block and the first deformation fixed block. The first deformation output movable block and the first deformation pair movable block reciprocate in the movable direction DX with opposite phases.

(B) The second deformation linear actuator has a second deformation output movable block instead of the output movable block 60. In the second modified linear actuator, the fixed block 50 is omitted.

The second deformation output movable block has a coil and a core. The second deformation output movable block differs from the fixed block 50 in that it reciprocates in the movable direction DX with respect to the main body case 30, and has a configuration similar to the fixed block 50 in other points.

The second deformation linear actuator supplies a current to the second deformation output movable block when outputting the reciprocating motion. The second deformation output movable block and the pair movable block 70 reciprocate in the movable direction DX by an electromagnetic force acting between the movable blocks. The second deformable output movable block and the pair movable block 70 reciprocate in the movable direction DX with opposite phases.

(C) The third deformation linear actuator has a third deformation pair movable block instead of the pair movement block 70. In the third modified linear actuator, the fixed block 50 is omitted.

The third deformable pair movable block has a coil and a core. The third deformable pair movable block differs from the fixed block 50 in that it reciprocates in the movable direction DX with respect to the main body case 30, and has a configuration similar to the fixed block 50 in other points.

When the third deformation linear actuator outputs a reciprocating motion, it supplies a current to the third deformation pair movable block. The output movable block 60 and the third deformation pair movable block reciprocate in the movable direction DX by an electromagnetic force acting between the movable blocks. The output movable block 60 and the third deformable pair movable block reciprocate in the movable direction DX with phases opposite to each other.

The output shaft vibration type electric device 10 of the first to fourth embodiments has an elastic component 16 as a single component. However, the configuration of the elastic component 16 is not limited to the content exemplified in each embodiment. The elastic part of the modified example is formed by at least two parts. The elastic part of a modification has a 1st elastic part and a 2nd elastic part as an example. The first elastic part has substantially the same structure as the lower part of the inner cylindrical part in the elastic part 16. The second elastic part has substantially the same structure as the remaining part other than the lower part of the inner cylindrical part in the elastic part 16. The inner cylindrical portion of the elastic component 16 indicates a cylindrical portion that contacts the output shaft 20.

The output shaft vibration type electric device 10 of the first to fourth embodiments has a form of an electric toothbrush as an electric oral hygiene device. However, the form as the electric oral hygiene apparatus in the output shaft vibration type electric apparatus 10 is not limited to the contents exemplified in each embodiment. As an example, the output shaft vibration type electric device of the modification has a form of an electric interdental brush, an electric stain removing device, or an electric tongue brush.

The output shaft vibration type electric device 10 of the first to fourth embodiments has the form of an electric oral hygiene device. However, the form of the output shaft vibration type electric apparatus 10 is not limited to the content exemplified in each embodiment. As an example, the output shaft vibration type electric device of the modification has a form of an electric razor or an electric massage device.

Claims

An electric linear actuator that drives the output shaft of the output shaft vibration type electric device,
The electric linear actuator includes a fixed block, an output movable block, an even movable block, a block coupling component, an output functional component, and an even functional component, and reciprocates in a protruding direction and a retracting direction defined as a movable direction. Configured to do and
The output movable block and the even movable block are arranged in parallel along a direction orthogonal to the movable direction,
The block coupling component is coupled to the fixed block, the output movable block, and the even movable block,
The output movable block and the even movable block reciprocate in the movable direction in opposite phases by an electromagnetic force acting between the fixed block and
The output functional component is coupled to the output movable block and the output shaft,
The kinematic function component is
An even-part main body coupled to the even-movable block;
An even-part adjusting unit formed integrally with the even-part main body by the same material as the even-part main body,
The kinematic part adjustment unit is disposed on the drawing direction side of the kinematic movable block,
Electric linear actuator.
An electric linear actuator that drives the output shaft of the output shaft vibration type electric device,
The electric linear actuator includes an output movable block, a pair movable block, a block coupling component, an output functional component, and a pair functional component, and reciprocates in a projecting direction and a retracting direction defined as a movable direction. Configured,
The output movable block and the even movable block are arranged in parallel along a direction orthogonal to the movable direction,
The block coupling component is coupled with the output movable block and the even movable block,
The output movable block and the pair movable block reciprocate in the movable direction in opposite phases by an electromagnetic force acting between the output movable block and the pair movable block,
The output functional component is coupled to the output movable block and the output shaft,
The kinematic function component is
A paired component main body coupled to the pair movable block;
An even-part adjusting unit formed integrally with the even-part main body by the same material as the even-part main body,
The kinematic part adjustment unit is disposed on the drawing direction side of the kinematic movable block,
Electric linear actuator.
The electric linear actuator further includes an additional adjustment component coupled to the kinematic component adjustment unit.
The electric linear actuator according to claim 1 or 2.
The additional adjustment component is disposed closer to the pair movable block than the pair adjustment unit in the movable direction.
The electric linear actuator according to claim 3.
The weight of the kinematic part main body is larger than the weight of the kinematic part adjusting part,
The electric linear actuator according to any one of claims 1 to 4.
The output functional component is:
An output component main body coupled to the output movable block;
An output shaft coupling portion coupled to the output component main body portion and the output shaft;
The electric linear actuator includes a first segmented region and a second segmented region that are segmented along a coupling portion center line of the output shaft coupling portion extending in the axial direction of the output shaft in a front view of the electric linear actuator. ,
At least the kinematic movable block is disposed in the first section area,
The center of gravity of the function coupling portion including the kinematic movable block and the functional component for the kinematic pair is located in the first segment area,
The electric linear actuator according to claim 5.
An output shaft vibration type electric device,
The output shaft vibration type electric device includes the electric linear actuator according to any one of claims 1 to 6, and the output shaft.
The output shaft is coupled to the output functional component;
Output shaft vibration type electric device.
The output shaft vibration type electric device has a form of an electric oral hygiene device,
The output shaft vibration type electric device according to claim 7.