JP6629536B2 - Massage machine - Google Patents

Description

  The present invention relates to a massage machine.

  The massage machine is mounted on a motor installed on the base, a crankshaft provided at the end of the armature shaft of the motor, and an eccentric shaft portion of the crankshaft which is eccentric with respect to the electronic machine shaft. Bearings provided. The bearing is fitted on the back side of a diaphragm that is swingably mounted on the base (for example, see Patent Document 1).

  In this massage machine, since the eccentric shaft rotates around the axis of the armature shaft, the rotational force of the motor vibrates the diaphragm by vibrating the diaphragm.

Japanese Utility Model Publication No. 5-84330

  However, the above-described massage machine has a structure in which the bearing is fitted to the diaphragm and the load applied to the diaphragm is directly applied to the motor. For this reason, in the above-described massage machine, a large motor that can withstand the load has to be used, and the massage machine becomes very heavy and difficult to carry.

  An object of the present invention is to provide a lightweight and portable massage machine.

  The massage machine according to the first aspect of the present invention provides a base unit, a motor installed on the base unit, a crankshaft provided at the end of an armature shaft of the motor, a vibrating unit, and a base unit. A supporting portion that swingably supports the vibrating portion, wherein the vibrating portion includes a biasing portion that rotates around an axis of the armature shaft when the armature shaft of the crankshaft is rotated. The core portion is provided with a fitting insertion hole which is movable along the axial direction of the eccentric portion, and the vibrating portion is configured such that a gap is formed inside the fitting insertion hole on the non-insertion side of the eccentric portion. , Supported by the support portion with respect to the base portion.

  With this configuration, when a load is applied to the vibrating portion and the vibrating portion is pushed toward the base portion, the eccentric portion moves relative to the vibrating portion in the insertion hole. However, since the gap is provided on the non-insertion side of the eccentric portion, this massage machine has a structure in which a load is not easily applied to the motor.

  Therefore, the massage machine of the present invention does not need to use a heavy motor that can withstand the load of the vibrating part as compared with a case where the load of the vibration part is directly applied to the motor, so that the weight of the whole massage machine can be reduced. . Therefore, when the configuration of the present invention is adopted, the massage machine is lightweight and easy to carry.

  In addition, like the massage machine described in claim 2, the eccentric portion may be configured to include an eccentric shaft portion forming a crank and a bearing portion attached to the eccentric shaft portion. In this case, the fitting hole may be formed in a size that allows the bearing portion to be fitted movably along the axial direction of the eccentric shaft portion.

  The massage machine according to claim 3, a monitoring unit that monitors the rotation speed of the motor, and when the rotation speed monitored by the monitoring unit is not a predetermined rotation speed, controls the motor to set the rotation speed in advance. And a control unit for approaching a predetermined number of revolutions.

  Although the massage machine of the present invention can use a small motor, the power is inferior to that of a large motor.

  However, as in the massage machine of the present invention, the rotation speed of the motor is monitored, and when the rotation speed is insufficient, if control is performed to bring the rotation speed of the motor closer to a predetermined rotation speed, a small motor is used. However, the rotation speed can be maintained appropriately.

Therefore, the massage machine of the present invention can prevent the vibration of the vibrating portion from becoming unstable even if a small motor is used.
As in the massage machine according to the fourth aspect, the eccentric portion may be provided with an elastically deformable auxiliary support portion that supports the vibrating portion in the gap.

  Even in this case, the load applied to the vibrating portion is mainly applied to the support portion, and is only indirectly applied to the motor via the auxiliary support portion. Therefore, the load applied to the motor is sufficiently lighter than when the motor is directly applied. Therefore, a small motor can be used even in a configuration including the auxiliary support portion in the gap as in the present invention.

Drawing 1A is a perspective view of the massage machine of an embodiment. FIG. 1B is a plan view of the massage machine of the embodiment. It is II-II sectional drawing of FIG. 1B. It is an exploded perspective view of the eccentric shaft part which constitutes the massage machine of an embodiment, and its peripheral structure. It is a block diagram of a control device.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.
The massage machine 1 according to the present embodiment includes a vibrating unit 2 and a base unit 3 as shown in FIG. The vibration section 2 and the base section 3 are assembled by disposing the vibration section 2 on the lower side in the direction of gravity and the base section 3 on the upper side in the direction of gravity, and stacking the base section 3 above the vibration section 2. Hereinafter, the lower side in the direction of gravity will be referred to as the lower side, and the upper side in the direction of gravity will be referred to as the upper side.

  The vibrating part 2 is formed in a shape such that a rectangular parallelepiped is turned over. Further, as shown in FIG. 1B, the vibrating portion 2 is formed in a shape in which both end surfaces in the longitudinal direction are depressed in an arc toward the inside when viewed in plan. Further, as shown in FIG. 1A, the vibrating portion 2 is formed in a shape having leg portions 20 protruding downward from other portions at four corners of the lower surface.

  The base part 3 includes a plate-shaped part 30 and an eight-shaped part 34. The plate-shaped portion 30 is formed in a shape such that a rectangular parallelepiped is turned sideways. However, the plate-shaped portion 30 is formed in a substantially rectangular parallelepiped shape that is thinner in the direction along the direction of gravity than the vibrating portion 2.

  As shown in FIG. 1B, the plate-shaped portion 30 is formed in a shape in which the surfaces at both ends in the longitudinal direction are depressed in an arc toward the inside when viewed in a plan view, like the vibrating portion 2. Further, the plate-shaped portion 30 is raised upward at the center of the upper surface, and the raised portion is formed in a disk shape whose central axis is along the direction of gravity. Hereinafter, the portion of the plate-shaped portion 30 raised into the disk shape is referred to as the disk portion 32, and the portion other than the disk portion 32 is referred to as the base plate portion 31.

  The eighth-shaped portion 34 is formed on the upper surface of the base plate portion 31 on both sides of the disk portion 32 (both sides as viewed in a direction along the longitudinal direction of the base plate portion 31). It is formed in a shape that draws an eight-shape along the upper surface of. However, a portion of the eight-shaped portion 34 that draws an arc at a position farthest from the disk portion 32 (hereinafter, referred to as a grip portion 340) protrudes outward from both end portions in the longitudinal direction of the base plate portion 31. ing. Since both end surfaces in the longitudinal direction of the base plate portion 31 are depressed inward (toward the disk portion 32), the grip portion 340 can be gripped by putting a hand inside the grip portion 340.

An operating tool 36 for operating the massage machine 1 is provided on the upper surface of the base plate portion 31, which is a portion located inside one of the two circles drawn by the eighth character portion 34. ing.
Next, the internal configuration of the massage machine 1 will be described with reference to FIG.

The vibrating part 2 is formed in a hollow shape in which the inside is divided into upper and lower two layers by a partition 21, and the upper surface of the internal space on the upper side is open.
Although the partition 21 is formed in a substantially flat plate shape, a recess 210 facing downward is formed in the center of the plate surface. A portion of the partition wall 21 other than the concave portion 210 is hereinafter referred to as a peripheral portion 211. In the massage machine 1, when the base part 3 is combined with the vibrating part 2, since the concave part 210 is formed in the partition 21, the part in which the concave part 210 is formed is smaller than the pressing part 310, which will be described later, as compared with the peripheral part 211. A wide space can be secured between them. Therefore, a cooling fan or the like described later is installed in the installation space 212 formed by forming the concave portion 210.

At the peripheral portion 211 of the partition 21, four elastic strut portions 50 are installed (only two are shown in FIG. 2).
The base plate 31 of the base 3 is formed in a hollow shape. The lower surface side of the base plate portion 31 is entirely pushed down except for the edge, and the base plate portion 31 has an inner portion corresponding to the pushed down portion (hereinafter referred to as “pressed portion 310”). The space is getting bigger. The base unit 3 is assembled such that the pressing unit 310 is located in the internal space above the vibration unit 2. Then, the elastic support portion 50 is fixed to the support column 312 provided inside the base plate portion 31 via a hole (not shown) provided at a portion facing the peripheral portion 211 on the lower surface side of the pressing portion 310. Thereby, the vibration part 2 is connected to the base part 3 so as to be swingable in the horizontal direction.

  A motor 37 is installed in the base plate 31 of the base 3. At the center of the pressing portion 310 of the base plate portion 31, a mounting hole 313 into which the housing 38 of the motor 37 fits is provided. The motor 37 is housed in the base plate 31 so that the housing 38 is fitted into the mounting hole 313 and the end of the armature shaft 370 of the motor 37 is located outside the base plate 31.

  The armature shaft 370 is rotatably supported by a bearing 371 installed in the housing 38 of the motor 37, and a male screw 372 (see FIG. 3) is formed at the tip of the armature shaft 370. The armature shaft 370 has a portion on which the male screw 372 is formed, which is screwed into an insertion port 400 provided on a crankshaft 4 described later in which a female screw (not shown) is formed on an inner wall surface. 370 and the crankshaft 4 are joined.

  As shown in FIG. 3, the crankshaft 4 has a prismatic boss 40 formed on the armature shaft 370 side, and a flange portion 41 is formed in connection with the boss 40. Further, a cylindrical eccentric shaft portion 42 is formed in connection with the flange portion 41, and the center of the eccentric shaft portion 42 is eccentric with the center of the insertion port 400 (see FIG. 2) by a predetermined amount. It is formed.

The eccentric shaft part 42 is attached to the vibration part 2 via a crank bearing 60 made of a bearing and an attachment member 61, as shown in FIG.
In the present embodiment, a protrusion 22 protruding toward the pressing portion 310 is provided at the center of the recess 210 of the partition 21. The projecting portion 22 is provided with a fitting hole 220, and the mounting member 61 is fitted into the fitting hole 220. The mounting member 61 is formed in a cylindrical shape whose one end side in the axial direction is open, and the crank bearing 60 is inserted into the mounting member 61 from the open end side of the mounting member 61.

  The fitting hole 220 and the mounting member 61 are formed in such a size that the crank bearing 60 can move within the mounting member 61 along the axial direction of the mounting member 61 (coincident with the axial direction of the crank bearing 60). The vibrating portion 2 is supported by the elastic support portion 50 with respect to the base portion 3 such that a gap 62 is formed on the non-insertion side of the crank bearing 60 in the fitting hole 220 when no load is applied. A wave washer 63 is provided in the gap 62. The wave washer 63 is an elastically deformable auxiliary support portion in which the crank bearing 60 and the eccentric shaft portion 42 support the base portion 3 in an auxiliary manner.

  Further, a cooling fan 7 is attached to the crankshaft 4. As shown in FIG. 3, the cooling fan 7 has a substantially disk shape, and a substantially square hole-shaped opening 70 corresponding to the shape of the boss 40 of the crankshaft 4 is formed substantially at the center thereof. The opening 70 is fitted to the boss 40 and is held between the flange 41 and the sleeve 373 so that the cooling fan 7 rotates together with the crankshaft 4. In this embodiment, the axis of the cooling fan 7 when it rotates is configured to coincide with the axis of the armature shaft 370.

The cooling fan 7 has a plurality of rectangular vanes 71 erected radially on the motor 37 side, and the motor 37 is air-cooled by cooling by the cooling fan 7.
On the other hand, two bosses 72 are provided on the vibrating portion 2 side of the cooling fan 7, and a counter weight 73 is fixed to the cooling fan 7.

  The counterweight 73 is a plate-shaped member formed in an arc shape, and the counterweight 73 has a hole 730 through which the screw 74 penetrates. The counterweight 73 is fixed to the cooling fan 7 by passing the screw 74 into the boss 72 through the screw 74 in the hole 730.

Next, the control device 8 included in the massage machine 1 of the present embodiment will be described.
As shown in FIG. 4, the control device 8 includes a rotation sensor 80 that detects the number of rotations of the armature shaft 370 of the motor 37, an adjustment device 81 that adjusts the amount of power supplied to the motor 37, and a central control device 82. It has.

  The central controller 82 determines whether or not the rotation speed detected by the rotation sensor 80 is the same as the rotation speed specified by the operation tool 36. Then, the central control device 82 controls the adjusting device 81 to increase the power amount to increase the rotation speed when the rotation speed of the armature shaft 370 is low, and performs control to reduce the power amount and decrease the rotation speed when the rotation speed is large. Execute.

Next, the characteristic operation and effect of the massage machine 1 of the present embodiment will be described.
In the massage machine 1 according to the present embodiment, the practitioner may use the grip portion 340 in his hand and apply the vibrating portion 2 to the patient, or turn it upside down and place it on the floor with the base portion 3 side down. Alternatively, the affected part may be applied to the vibrating part 2 for use.

  When the motor 37 is started by an ON operation on the operation tool 36, the armature shaft 370 rotates, and the crankshaft 4 rotates about the armature shaft 370 together with the armature shaft 370. The center of the eccentric shaft portion 42 of the crankshaft 4 rotates around the armature shaft 370. Then, the crank bearing 60 and the mounting member 61 also rotate around the armature shaft 370, whereby the vibrating portion 2 vibrates while being supported by the elastic support portion 50.

  Further, together with the crankshaft 4, the cooling fan 7 also rotates about the armature shaft 370. By the rotation of the cooling fan 7, the motor 37 is cooled by air, and the counterweight 73 turns around the armature shaft 370.

  At this time, the force vertically applied to the armature shaft 370 due to the swinging of the vibrating portion 2 and the force vertically applied to the armature shaft 370 by the counterweight 73 are opposite to each other and act to cancel each other. Therefore, the counterweight 73 cancels the recoil of the vibration portion 2 in the swing direction.

  Therefore, when the practitioner presses the vibrating portion 2 against the patient while holding the grip portion 340 in his hand, the vibration is less likely to be transmitted to the practitioner. Therefore, the burden of operating the massage machine 1 is reduced for the practitioner.

  In the massage machine 1 of the present embodiment, when a load is applied to the vibrating portion 2 and the elastic support portion 50 is elastically deformed, and the vibrating portion 2 is pushed toward the base portion 3, the crank bearing 60 vibrates in the fitting hole 220. It moves relatively to the part 2.

  However, the massage machine 1 of the present embodiment has a structure in which the gap 62 is provided on the non-insertion side of the crank bearing 60, so that the load is mainly applied to the elastic support portion 50 and is hardly applied to the motor 37. .

  Therefore, in the massage machine 1 of the present embodiment, it is not necessary to use a heavy motor that can withstand the load of the vibrating section 2 as compared with the case where the load of the vibrating section 2 is directly applied to the motor 37. Can be lighter. Therefore, the massage machine 1 of the present embodiment is lightweight and easy to carry, so that the burden on the practitioner is reduced.

  As described above, the massage machine 1 of the present embodiment can use the small motor 37, but the power is inferior to that of the large motor. The vibration of the part 2 may be unstable. However, in the massage machine 1 of the present embodiment, the control device 8 monitors the rotation speed of the motor 37, and executes control to bring the rotation speed of the motor 37 closer to a predetermined rotation speed when the rotation speed is insufficient. . For this reason, in the massage machine 1 of the present embodiment, the rotation speed of the motor 37 is controlled to be an appropriate rotation speed even in a case where the rotation speed drops due to poor power. Therefore, the massage machine 1 of the present embodiment can prevent the vibration of the vibrating section 2 from becoming unstable even if the small motor 37 is used.

Further, the massage machine 1 of the present embodiment is provided with the wave washer 63 as the auxiliary support in the gap 62, so that a part of the load applied to the vibrating part 2 is also applied to the motor 37.
However, the load applied to the vibrating portion 2 is mainly applied to the elastic support portion 50, and is only indirectly applied to the motor 37 via the wave washer 63. Therefore, the load applied to the motor 37 is sufficiently lighter than when the motor 37 is directly applied. Therefore, a small motor 37 can be used even when the wave washer 63 is provided in the gap 62 as in the present embodiment.

  Note that the eccentric shaft portion 42 and the crank bearing 60 of the present embodiment correspond to the eccentric portion of the present invention, and the rotation sensor 80 corresponds to a monitoring unit. The central control device 81 and the adjusting device 82 of the present embodiment correspond to the control unit of the present invention. The elastic strut 50 of the present embodiment corresponds to the support of the present invention.

The embodiments have been described above. However, it is needless to say that the invention described in the claims can take various forms without being limited to the above embodiments.
In the above embodiment, the structure in which the vibrating portion 2 is swingably supported by the elastic support portion 50 with respect to the base portion 3 has been described. However, instead of the elastic support portion 50, a pair of sliding plates is used. Is also good. In this case, a sliding plate may be installed on each of the vibrating part 2 and the base part 3, and the vibrating part 2 and the base part 3 may be installed so that these sliding plates abut.

  In the above embodiment, a bearing that is the crank bearing 60 is fixed to the eccentric shaft portion 42 of the crank shaft 4, and the crank bearing 60 slides in the fitting hole 220 (specifically, inside the mounting member 61). Although the crankshaft bearing 60 is fixed to the vibrating portion 2 side, the eccentric shaft portion 42 may be configured to slide with respect to the crankshaft bearing 60. Further, the eccentric shaft 42 may be configured to slide in the insertion hole 220.

  In the above embodiment, the configuration in which the wave washer 63 is housed in the gap 62 has been described, but the wave washer 63 may not be provided. In addition, another washer such as a spring washer may be used instead of the wave washer 63 as long as it has a similar function.

  In the above embodiment, the rubber elastic support portion 50 has been described as an example, but a coil-shaped spring may be used.

DESCRIPTION OF SYMBOLS 1 ... Massage machine 2 ... Vibration part 3 ... Base part 4 ... Crankshaft 7 ... Cooling fan 8 ... Control device 20 ... Leg part 21 ... Partition wall 22 ... Projection part 30 ... Plate part 31 ... Base plate part 32 ... Disk part 34 ... Eighth-shaped part 36 ... Operating tool 37 ... Motor 38 ... Housing 40 ... Boss 41 ... Flange 42 ... Eccentric shaft part 50 ... Elastic support part 60 ... Crank bearing 61 ... Mounting member 62 ... Gap 63 ... Wave washer 70 ... Opening 71 ... Blade 72 ... Boss 73 ... Counterweight 74 ... Screw 80 ... Rotation sensor 81 ... Adjusting device 82 ... Central control device 210 ... Recess 211 ... Peripheral portion 212 ... Installation space 220 ... Fitting hole 310 ... Pressing portion 312 … Support column 313… mounting hole 340… gripping part 370… armature shaft 371… bearing 372… male screw 373… sleeve 400… insertion opening 30 ... hole

Claims (6)

The foundation,
A motor installed on the foundation,
A crankshaft provided at the tip of the armature shaft of the motor,
Vibrating part,
A supporting portion that swingably supports the vibrating portion with respect to the base portion;
With
In the vibrating section,
Of the crankshaft, an eccentric portion that rotates around the axis of the armature shaft when the armature shaft is rotated is provided with a fitting insertion hole that can move along the axial direction of the eccentric portion,
The vibrating section includes:
As a gap is generated on the non-insertion side of the eccentric portion inside the insertion hole, the support portion is supported by the support portion,
Wherein the base portion, 8 Roh-shaped portion formed in a shape to draw a figure eight is provided,
The 8 of portion constituting the Roh-shaped portion, the portion drawing an arc at the farthest position from the position corresponding to the position where the two circles the 8 Roh-shaped portion is drawn in contact, graspable gripping Hands inside Department is composed,
A massage machine characterized in that an operating tool for operating the massage machine is provided inside one of the two circles drawn by the 8 -shaped portion. The massage machine according to claim 1,
The eccentric part,
An eccentric shaft part constituting a crank;
And a bearing part attached to the eccentric shaft part,
The insertion hole,
A massage machine having a size in which the bearing portion is movably fitted along the axial direction of the eccentric shaft portion. In the massage machine according to claim 1 or claim 2,
A monitoring unit that monitors the number of rotations of the motor,
When the rotation speed monitored by the monitoring unit is not a predetermined rotation speed, a control unit that controls the motor to bring the rotation speed closer to the predetermined rotation speed. Massage machine. The massage machine according to any one of claims 1 to 3,
In the gap,
A massage machine, wherein the eccentric portion is provided with an elastically deformable auxiliary supporting portion that supports the vibrating portion. The massage machine according to claim 4,
The auxiliary machine is a wave washer. The massage machine according to any one of claims 1 to 5,
The support section is
A massage machine comprising a rubber or coil-shaped spring.