JP4343783B2 - Torque generator - Google Patents

Description

  The present invention relates to a torque generator capable of applying a generated rotational force to another mechanism.

  A torque generator is an auxiliary machine that applies a rotational force as an assisting motion to another mechanism that rotates. Other mechanisms to which rotational force is applied by the torque generator include, for example, a cord reel device that automatically winds a drawn electric wire cord, and a winder that is rotatably supported by a retractable opening / closing body. There is an open / close device that winds around a cage.

  For example, in the latter opening / closing device, the winding cage is rotatably inserted in a part of the axial direction of the support shaft, and a torque generator is provided on the support shaft in a portion other than the portion where the winding cage is extrapolated. It is done. In the conventional torque generator, the main member is a torsion coil spring. The torsion coil spring is extrapolated to the support shaft, one end is fixed to the winding cage, and the other end is fixed to the support shaft. Therefore, when the open / close body is pulled out and the winding cage rotates, the torsion coil spring is twisted, and the restoring force is accumulated as a rotational force. The rotational force accumulated in the torque generator in this way acts in a direction to reduce the winding load that increases due to the weight of the drawn opening / closing body, and realizes winding with a small force of the opening / closing body. It was.

  However, since the conventional torque generator uses a torsion coil spring in its main part, it must be arranged side by side with other mechanism members on the support shaft, and the assembly length in the axial direction becomes long, It was necessary to take a larger arrangement space. For example, in the case of a switchgear, a winding cage, a torsion coil spring, and a drive motor may need to be disposed on the support shaft. In such a structure, the assembly space in the axial direction becomes large. It was difficult to produce a so-called narrow opening / closing device having a short axial direction. Furthermore, in the conventional torque generator, both ends of the torsion coil spring are directly fixed to the take-up cage and the support shaft, so that the assembly work becomes complicated and time-consuming.

  The present invention has been made in view of the above situation, and provides a torque generator capable of shortening the length in the axial direction and configuring a plurality of parts as a single unit with a simple structure. The aim is to achieve compactness and improved assembly.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The torque generator 300 according to claim 1 of the present invention includes a mainspring spring 11 having hook-shaped locking portions 23 and 25 at the outer end 19 and the inner end 21,
A hollow pipe-shaped core 13 having a notch 39 that is inserted into the vortex center space 41 of the mainspring spring 11 and engages with the engaging portion 25 of the inner end 21;
The winding core 13 is disposed substantially coaxially so that the mainspring spring 11 is accommodated in the internal space 49, and a locking hole 73 for locking the locking portion 23 of the outer end 19 of the mainspring spring 11 is formed on the peripheral wall 53. A cylindrical case 71 drilled in,
An attached shaft 27 inserted through the hollow portion of the core 13 and attached;
Equipped with,
A fixing hole 29 for a fixture that penetrates the winding core 13 and the attached shaft 27 in the radial direction is formed in one end portion of the winding core 13 and protruding from the opening of the case 71. The winding core 13 and the attached shaft 27 are fixed by a fixture that passes through the fixing hole 29,
The fixing hole 29 for the fixing tool is formed by being eccentric with respect to the center of the winding core 13 by the thickness of the spring material thickness of the folded inner end located inside the winding core 13 of the mainspring spring 11. In the state where the winding core 13 is fixed to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27 .

In this torque generator 300, for example, the length in the axial direction is shorter than the conventional structure in which a torsion coil spring is extrapolated to the core 13. A mainspring 11 serving as a torque generation source is housed in a case 71, and the case 71 and the winding core 13 function as a torque extraction member. Further, a locking structure for locking the locking portion 23 on the case side is formed by only the locking hole 73. And according to this torque generator 300, it can comprise as a single unit of a simple structure.
Moreover, in this torque generator 100, since the core 13 becomes a pipe shape, it can be extrapolated to the mounted shaft 27, and can be mounted on the mounted shaft 27 without requiring a special mounting structure. The extrapolation and fixing work to the attached shaft 27 is easy and reliable. In the torque generator 100, the center of the winding core 13 is displaced from the center of the winding core 13 by the thickness of the mainspring spring material 17, but the fixing hole 29 for the fixture is shifted by that amount and disposed on the winding core 13. Therefore, when the winding core 13 is attached to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27.

The torque generator according to claim 2, the mainspring spring 11 having hook-shaped locking portions 23 and 25 at the outer end 19 and the inner end 21,
A hollow pipe-shaped core 13 having a notch 39 that is inserted into the vortex center space 41 of the mainspring spring 11 and engages with the engaging portion 25 of the inner end 21;
The winding core 13 is disposed substantially coaxially so that the mainspring spring 11 is accommodated in the internal space 49 and the locking portion 23 of the outer end 19 of the mainspring spring 11 is locked to a part of the peripheral wall 53. A cylindrical case 53 in which a raising hole 63 is formed;
An attached shaft 27 inserted through the hollow portion of the core 13 and attached;
Equipped with,
A fixing hole 29 for a fixture that penetrates the winding core 13 and the attached shaft 27 in the radial direction is formed in one end portion of the winding core 13 and protruding from the opening of the case 71. The winding core 13 and the attached shaft 27 are fixed by a fixture that passes through the fixing hole 29,
The fixing hole 29 for the fixing tool is formed by being eccentric with respect to the center of the winding core 13 by the thickness of the spring material thickness of the folded inner end located inside the winding core 13 of the mainspring spring 11. In the state where the winding core 13 is fixed to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27 .

In this torque generator, for example, the length in the axial direction is shorter than that of a conventional structure in which a torsion coil spring is extrapolated to the core. The mainspring 11 serving as a torque generation source is accommodated in a case 61, and the case 61 and the winding core 13 function as a torque extraction member. Further, the cut and raised piece 65 remains, and the cut and raised piece 65 acts as a reinforcing material for the hole 63. And according to this torque generator, it can comprise as a single unit of a simple structure.
Moreover, in this torque generator 100, since the core 13 becomes a pipe shape, it can be extrapolated to the mounted shaft 27, and can be mounted on the mounted shaft 27 without requiring a special mounting structure. The extrapolation and fixing work to the attached shaft 27 is easy and reliable. In the torque generator 100, the center of the winding core 13 is displaced from the center of the winding core 13 by the thickness of the mainspring spring material 17, but the fixing hole 29 for the fixture is shifted by that amount and disposed on the winding core 13. Therefore, when the winding core 13 is attached to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27.

The torque generator 100 according to claim 3 includes a mainspring spring 11 having hook-shaped locking portions 23 and 25 at the outer end 19 and the inner end 21;
A hollow pipe-shaped core 13 having a notch 39 inserted into the spiral center space 41 of the mainspring spring 11 and locked to the locking portion 25 of the inner end 21;
The winding core 13 is disposed substantially coaxially so that the mainspring spring 11 is accommodated in the internal space 49, and a part of the peripheral wall 53 is bulged outward in the radial direction to form a bulging portion 55. A cylindrical case 15 in which a locking piece 57 for locking the locking portion 23 of the outer end 19 is formed inside the bulging portion 55;
An attached shaft 27 inserted through the hollow portion of the core 13 and attached;
Equipped with,
A fixing hole 29 for a fixture that penetrates the winding core 13 and the attached shaft 27 in the radial direction is formed in one end portion of the winding core 13 and protruding from the opening of the case 71. The winding core 13 and the attached shaft 27 are fixed by a fixture that passes through the fixing hole 29,
The fixing hole 29 for the fixing tool is formed by being eccentric with respect to the center of the winding core 13 by the thickness of the spring material thickness of the folded inner end located inside the winding core 13 of the mainspring spring 11. In the state where the winding core 13 is fixed to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27 .

In the torque generator 100, for example, the axial length is shorter than that of a conventional structure in which a torsion coil spring is extrapolated to the winding core 13. A mainspring 11 serving as a torque generation source is accommodated in a case 15, and the case 15 and the core 13 function as a torque extracting member. Further, the locking piece 57 remains, the locking piece 57 acts as a reinforcing material, and the locking portion 23 of the outer end 19 of the mainspring spring 11 enters the inside of the bulging portion 55 and interferes with the case 15. No longer. And according to this torque generator 100, it can comprise as a single unit of a simple structure.
Moreover, in this torque generator 100, since the core 13 becomes a pipe shape, it can be extrapolated to the mounted shaft 27, and can be mounted on the mounted shaft 27 without requiring a special mounting structure. The extrapolation and fixing work to the attached shaft 27 is easy and reliable. In the torque generator 100, the center of the winding core 13 is displaced from the center of the winding core 13 by the thickness of the mainspring spring material 17, but the fixing hole 29 for the fixture is shifted by that amount and disposed on the winding core 13. Therefore, when the winding core 13 is attached to the attached shaft 27, the center of the mainspring spring 11 substantially coincides with the center of the attached shaft 27.

5. The torque generator according to claim 4, wherein the case is formed in a substantially bottomed cylindrical shape so that one end in the axial direction is an opening and the other is formed in the other end in the axial direction. A hole through which the winding core is penetrated is formed in the approximate center .

6. The torque generator according to claim 5, wherein the case is formed in a substantially bottomed cylindrical shape so that one end in the axial direction is an opening and the other is formed in the other end in the axial direction. A hole through which the attached shaft is penetrated is formed in the approximate center of the base plate, and a washer for preventing contact with the attached shaft during rotation of the case is provided on the bottom plate at the position of the hole. It is characterized by .

  In the torque generator 100, the wound spring 11 can be inserted into the internal space 49 in the axial direction through the opening 43 of the case 15.

  According to the torque generator of the first aspect of the present invention, the mainspring spring having the hook-shaped locking portions at the outer end and the inner end, and the inner end inserted through the vortex center space of the mainspring spring. A winding core having a notch that is locked to the locking portion of the main spring, a coil core that is coaxially arranged to accommodate the mainspring spring in the internal space, and a locking mechanism that locks the locking portion at the outer end of the mainspring spring. Because it has a cylindrical case with a perforated hole in its peripheral wall, for example, the axial length can be shortened compared to a conventional structure with a torsion coil spring extrapolated to the core, making the device compact. Can be configured. And according to this torque generator, it can comprise as a single unit of a simple structure.

In addition, the mainspring spring, which is a torque generation source, is housed in the case, and the case and the core function as a torque extraction member, so that attachment to other mechanisms is facilitated, and assembly is improved. In addition, it can be easily replaced during maintenance.
Furthermore, since the locking structure that locks the locking portion on the case side includes only the locking holes, the case can be easily manufactured.
In addition, in this torque generator, the core is pipe-shaped so that it can be extrapolated to the mounted shaft and can be mounted on the mounted shaft without requiring a special mounting structure. The extrapolation and fixing work can be easily and reliably performed. Further, in this torque generator, the center of the core is displaced from the center of the mainspring by the thickness of the mainspring spring material. Is attached to the attached shaft, the center of the mainspring spring substantially coincides with the center of the attached shaft 27.

According to the torque generating device of the second aspect, the length in the axial direction can be shortened as compared with the conventional structure in which, for example, a torsion coil spring is extrapolated to the winding core, similarly to the effect of the first aspect. The apparatus can be configured compactly. And according to this torque generator, it can comprise as a single unit of a simple structure.
In addition, the mainspring spring, which is a torque generation source, is housed in the case, and the case and the core function as a torque extraction member, so that attachment to other mechanisms is facilitated, and assembly is improved. In addition, it can be easily replaced during maintenance.
In addition, a cut-and-raised hole is formed in a part of the peripheral wall to lock the locking part at the outer end of the mainspring spring. Can be prevented.
In addition, in this torque generator, the core is pipe-shaped so that it can be extrapolated to the mounted shaft and can be mounted on the mounted shaft without requiring a special mounting structure. The extrapolation and fixing work can be easily and reliably performed. Further, in this torque generator, the center of the core is displaced from the center of the mainspring by the thickness of the mainspring spring material. Is attached to the attached shaft, the center of the mainspring spring substantially coincides with the center of the attached shaft 27.

According to the torque generating device of the third aspect, the length in the axial direction can be shortened as compared with the conventional structure in which, for example, a torsion coil spring is extrapolated to the core, and the device is configured in a compact manner. can do. And according to this torque generator, it can comprise as a single unit of a simple structure.
In addition, the mainspring spring, which is a torque generation source, is housed in the case, and the case and the core function as a torque extraction member, so that attachment to other mechanisms is facilitated, and assembly is improved. In addition, it can be easily replaced during maintenance.
Furthermore, a part of the peripheral wall is bulged outward in the radial direction to form a bulging part, and a locking piece for locking the locking part of the outer end of the mainspring spring is formed inside the bulging part. As a result, the strength of the case can be prevented from decreasing, and the locking portion at the outer end of the mainspring spring can be inserted into the internal space without interfering with the case, and at the same time, the locking portion is locked to the locking piece. can do. Thereby, the assembly workability | operativity of a complicated spring can be improved.
In addition, in this torque generator, the core is pipe-shaped so that it can be extrapolated to the mounted shaft and can be mounted on the mounted shaft without requiring a special mounting structure. The extrapolation and fixing work can be easily and reliably performed. Further, in this torque generator, the center of the core is displaced from the center of the mainspring by the thickness of the mainspring spring material. Is attached to the attached shaft, the center of the mainspring spring substantially coincides with the center of the attached shaft 27.

DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a torque generator according to the present invention will be described in detail with reference to the drawings.
1 is an exploded perspective view of a torque generator according to a first embodiment of the present invention, FIG. 2 is a sectional view of the torque generator shown in FIG. 1, and FIG. 3 is a torque attached to a mounted shaft. 4 is a cross-sectional view of the core, FIG. 4 is a cross-sectional view of the core, and FIG. 5 is a perspective view of a case representing a modification of the first embodiment.

  The torque generator 100 according to the first embodiment includes a mainspring spring 11, a winding core 13, and a case 15 as main members. The mainspring spring 11 is formed by winding a strip-shaped spring material 17 in a spiral shape. As a material, a wire rod may be used in addition to a strip. The mainspring spring 11 has locking portions 23 and 25 at an outer end 19 that is an end portion on the outer peripheral side of the spiral and an inner end 21 that is an end portion on the inner peripheral side, respectively. The latching | locking parts 23 and 25 are formed in the hook-shaped hook shape which turned up the front-end | tip.

  The core 13 is formed, for example, in the shape of a hollow pipe opened at both ends. Since the winding core 13 has a hollow pipe shape, it can be extrapolated to a mounted body of another mechanism, for example, a mounted shaft 27 shown in FIG. 3, and can be attached to the mounted shaft 27 without requiring a special mounting structure. Can be attached. Thereby, the torque generator 100 can be easily attached to another mechanism. Fixing holes 29 for fixing tools such as bolts, screws and rivets are formed in the core 13. The winding core 13 is extrapolated to the mounted shaft 27, the fixing tool fixing hole 29 is aligned with the fixing tool through hole 31 of the mounted shaft 27, and the nut 35 is attached to the tip of the bolt 33 that passes through these holes. Are fixed to the attached shaft 27 by being screwed together.

  The winding core 13 is formed with a slit 39 as a notch cut in a direction along the axis 37 from one end side. The winding core 13 is inserted into the vortex center space 41 of the mainspring spring 11 so that the locking portion 25 can be inserted from the end opening of the slit 39. The locking portion 25 inserted into the slit 39 locks the inner end 21 of the mainspring spring 11 to the slit 39 so as to be wound around the winding core 13.

  The case 15 is formed in a substantially bottomed cylindrical shape with one end in the direction of the axis 37 serving as the opening 43. Thus, the case 15 is provided with the opening 43 for inserting the mainspring spring 11 at at least one end in the axial direction, so that the easy insertion and assembling work of inserting the wound mainspring spring 11 in the axial direction is possible. Can be possible.

  In the bottom plate 45, a hole 47 through which the winding core 13 is penetrated is formed substantially in the center. The case 15 can accommodate the mainspring 11 wound around the core 13 in the internal space 49. As shown in FIG. 2, the winding core 13 accommodated together with the mainspring spring 11 is disposed coaxially with the case 15, and at least one end protrudes from the opening 43. As shown in FIG. 3, a washer 51 for preventing contact at the position of the hole 47 may be provided on the bottom plate 45 of the case 15.

  A part of the peripheral wall 53 of the case 15 is formed with a bulging portion 55 bulging outward in the radial direction. In the present embodiment, the bulging portion 55 is curved in a circular arc shape in cross section and bulged in a substantially bowl shape. A locking piece 57 is formed inside the bulging portion 55. The locking piece 57 is formed by cutting the peripheral wall 53 into a U shape and bending the convex portion surrounded by the cutting line inward. A locking portion 23 of the outer end 19 of the mainspring spring 11 is locked to the locking piece 57. In addition, since the locking piece 57 is formed so as not to reach the bottom plate 45, the mainspring spring 11 is prevented from contacting the bottom plate 45.

  The mainspring spring 11 is accommodated in the internal space 49 of the case 15 by locking the locking portion 23 of the outer end 19 to the locking piece 57.

  By the way, the fixing tool fixing hole 29 provided in the above-described winding core 13 is formed by being eccentric with respect to the center of the winding core 13 by the thickness of the spring material 17 of the mainspring spring 11. That is, as shown in FIG. 4, the center 29C of the fixing tool fixing hole 29 penetrating the core 13 and the center 13C of the core 13 do not coincide with each other and correspond to the position where the notch 39 is formed. It is cored. Accordingly, although the center of the core 13 is shifted by the thickness of the spring material 17, the fixing hole 29 for the fixing tool is shifted and the core 13 is attached to the mounted shaft 27. As a result, the center of the mainspring spring 11 substantially coincides with the center of the mounted shaft 27. Thereby, the center of the mainspring spring 11 can be made to substantially coincide with the center of the mounted shaft 27 in another mechanism.

  The torque generator 100 configured as described above is manufactured as follows. That is, first, the spring material 17 is formed into a strip having a predetermined width. In this state, the spring material 17 remains substantially smooth. Next, locking portions 23 and 25 are formed at both ends in the longitudinal direction. Thereafter, a predetermined heat treatment is performed as necessary. Next, the spring material 17 is wound around the outer periphery of a temporary core (not shown). That is, one end is set as the inner end 21, and the locking portion 25 formed at the inner end 21 is locked to the temporary core and wound.

  The wound spring material 17 becomes the mainspring spring 11, and the mainspring spring 11 wound around the temporary core is inserted into the internal space 49 of the case 15 together with the temporary core. At this time, the engaging portion 23 of the outer end 19 is arranged so as to coincide with the bulging portion 55. Accordingly, interference between the locking portion 23 of the outer end 19 and the peripheral wall 53 is avoided, and the mainspring spring 11 with the locking portion 23 protruding from the outer periphery can be inserted into the case 15 as it is. And the latching | locking part 23 inserted inside the bulging part 55 will be latched by the latching piece 57 simultaneously.

  Next, the temporary lead is removed. The winding core 13 is inserted into the vortex center space 41 of the mainspring 11 after removing the temporary core. The core 13 is inserted into the slit 39 so that the locking portion 25 of the inner end 21 is inserted. As a result, the locking portion 23 of the outer end 19 of the mainspring spring 11 is locked to the locking piece 57 and the locking portion 25 of the inner end 21 is locked to the slit 39 of the winding core 13, and torque The production of the generator 100 is completed.

  In addition, the torque generator 100 may restrict | limit the outer diameter of the mainspring spring 11 by temporarily stopping the outer periphery with a wire etc. in the state which wound the mainspring spring 11 around the temporary core. The wire for temporary fixing may be removed from the outer periphery of the mainspring spring 11 as the mainspring spring 11 is inserted into the case 15.

  Therefore, according to the torque generator 100, the length in the axial direction can be shortened, for example, compared to a conventional structure in which a torsion coil spring is extrapolated to the core 13, and the apparatus can be configured compactly. . In addition, the mainspring 11 serving as a torque generation source is accommodated in the case 15, and the case 15 and the winding core 13 function as a torque extraction member. Therefore, attachment to other mechanisms is facilitated, and assembly is good. And can be easily replaced during maintenance.

  Further, a part of the peripheral wall 53 is bulged outward in the radial direction to form a bulged portion 55, and the bulged portion 55 is cut into a U-shape and the convex portion surrounded by the cutting line is bent inward. Thus, since the locking piece 57 for locking the locking portion 23 of the outer end 19 of the mainspring spring 11 is formed inside the bulging portion 55, the case strength can be prevented from being lowered and the mainspring spring 11 can be prevented. The locking portion 23 of the outer end 19 can be inserted into the internal space 49 without interfering with the case 15, and at the same time, the locking portion 23 can be locked to the locking piece 57. Thereby, the assembly workability | operativity of a complicated spring can be improved.

  In the above embodiment, the case where the bulging portion 55 is formed in a curved shape has been described as an example. However, the torque generator according to the present invention is a rectangular parallelepiped formed by right-angle bending as shown in FIG. A case 15A provided with a bulging portion 55A having a shape may be used. According to such a bulging portion 55 </ b> A, the inner space of the bulging portion 55 </ b> A can be enlarged to make it more difficult to interfere with the locking portion 23.

Next, a second embodiment of the torque generator according to the present invention will be described.
FIG. 6 is a configuration diagram showing a case according to the second embodiment in (a) and a modified example in (b). In the following embodiments and modifications, members that are the same as those shown in FIGS. 1 to 5 are assigned the same reference numerals, and redundant descriptions are omitted.

  The torque generator according to this embodiment is characterized by a case 61. Other configurations are the same as those of the torque generator 100 of the first embodiment. As shown in FIG. 6 (a), the case 61 is formed by cutting a part of the peripheral wall 53 into a U shape and bending the convex portion surrounded by the cutting line outward. A cut-and-raised hole 63 for locking the locking portion 23 of the end 19 is formed in the peripheral wall 53.

In this case 61, the cut and raised pieces 65 remain, and the cut and raised pieces 65 act as reinforcing members for the holes 63.
Therefore, according to this torque generator, the peripheral wall 53 is cut into a U-shape to form the cut-and-raised hole 63 that locks the locking portion 23 of the outer end 19 of the mainspring spring 11. Compared with the case where only the holes are drilled, the case strength can be prevented from being lowered by the amount of the cut and raised pieces 65 remaining.

  In the present embodiment, the cut-and-raised hole 63 is formed only in the peripheral wall 53, but the torque generator according to the present invention has the cut-and-raised hole so as to reach the bottom plate 45 as shown in FIG. A case 61A in which 63A is formed long may be used. If such a case 61A is used, since the extending length of the cut and raised hole 63A can be secured long, the wider spring spring 11 can be locked.

Next, a third embodiment of the torque generator according to the present invention will be described.
FIG. 7 is an exploded perspective view of a third embodiment of the torque generator according to the present invention, and FIG. 8 is a perspective view of a modified example of the core shown in FIG.
The torque generator 300 according to this embodiment is characterized by a case 71. Other configurations are the same as those of the torque generator 100 of the first embodiment. As shown in FIG. 7, the case 71 is provided with a locking hole 73 that locks the locking portion 23 of the outer end 19 of the mainspring spring 11 in the peripheral wall 53. That is, a locking structure for locking the locking portion 23 is formed only by the locking hole 73.
Therefore, since the locking structure for locking the locking portion 23 on the case 71 side consists of only the locking holes 73, the case 71 can be easily manufactured.

  As shown in FIG. 8, the core 13 may be a core 13 </ b> A in which a groove 39 </ b> A for dividing the peripheral wall 53 is formed instead of the slit 39. According to such a winding core 13A, formation from a flat plate material becomes possible, and post-processing of the slit 39 (groove 39A) becomes unnecessary. In addition, it is possible to insert the locking portion 25 from both directions, and it is possible to deal with a case where the winding direction of the mainspring spring 11 is different, that is, there is a right and left hand.

Next, a mechanism according to a fourth embodiment configured using the torque generator according to the above embodiment will be described.
FIG. 9 is a configuration diagram of the fourth embodiment when the torque generator is used in a cord reel device. In addition, although the case where the torque generator 100 which concerns on 1st embodiment is used for the following mechanisms is demonstrated to an example, the following mechanisms are any of the said 1st, 2nd, 3rd embodiment. A torque generator may be used.
The cord reel device 400, which is another mechanism, has a take-up reel 87 in which a pair of parallel flange portions 83 and 85 are formed at both ends of the take-up pipe 81 in the axial direction. An electric wire cord 89 is wound around the winding pipe 81 of the winding reel 87 while being regulated by the flange portions 83 and 85.

  In the take-up reel 87, one flange portion 85 is integrally fixed to the case 15 of the torque generating device 100. That is, in this embodiment, as shown in FIG. 9, the flange portion 85 is fixed to the outside of the bottom plate 45 of the case 15 and is substantially integrated with the case 15. The fixing structure between the bottom plate 45 and the flange portion 85 of the case 15 is a portion that is fixed to each other by rivets, bolts, nuts, screws, or welding, and is formed in a plate shape. It will be easy to assemble. Further, the core 13 is fixed to a fixed shaft or the like of a cord reel device 400 (not shown).

  According to this cord reel device 400, when the electric wire cord 89 is pulled out and the take-up reel 87 and the case 15 rotate, the mainspring spring 11 is wound and the restoring force is accumulated as a rotational force. Then, the accumulated rotational force is used as a winding force when winding the drawn wire cord 89, so that the wire cord 89 can be automatically wound.

  The torque device 100 may be configured to be attached with a lid member 91. That is, as shown in FIG. 9, the cover member 91 is attached to the case 15, the opening 43 of the case 15 is closed, and the internal space 49 is blocked from the outside. The lid member 91 attached to the case 15 is preferably disposed without contacting the mainspring spring 11 located inside.

  According to the torque generating device 100 provided with the lid member 91, it is possible to prevent foreign matters and dust from entering the case 15 from the outside. Further, it is possible to prevent the mainspring 11 in the case 15 from being displaced.

  In addition, the torque generator according to the present invention is a mechanism that rotates, for example, a shutter winding mechanism, a wire winding mechanism for an overhanging door, a wire or wiring winding mechanism for an obstacle sensing device, and a wire winding for a health device. In various mechanisms such as a take-off mechanism, the present invention can be applied as an auxiliary device that can apply the generated rotational force, and in that case, the same effect as described above can be obtained.

  Further, in each of the above-described embodiments, the case-side configuration that is locked with the locking portion 23 formed on the outer end 19 of the mainspring spring 11, that is, the locking piece of the case 15 in the first embodiment. 57, the cut-and-raised holes 63 and 63A of the cases 61 and 61A in the second embodiment, and the locking holes 73 of the case 71 in the third embodiment correspond to the width of the mainspring spring 11. In other words, the entire width of the locking portion 23 of the mainspring spring 11 is locked to the locking strip 57, the cut-and-raised holes 63 and 63A, or the substantially full width of the locking hole 73. However, the shape of the locking part is approximately fork-shaped, that is, it is configured to be one or more notches in the middle of the mainspring spring in the width direction of the mainspring spring, corresponding to this. Securing piece, cut and raised hole, locking hole width direction A projecting part or a frame-like part is provided in the middle part, and this projecting part or the frame-like part and the notch groove are locked to each other, and the locking part and the locking piece, the locking part and the cut and raised hole, It is good also as a structure which locks a part and a locking hole mutually, and assembles a mainspring spring and a case. By adopting such a configuration, the mainspring spring is displaced in the width direction by the engagement between the convex portion, the frame-shaped portion and the notch groove with respect to the case-side locking piece, the cut-and-raised hole and the locking hole. Thus, the locked state can be maintained without any problem, and the assembled state of the mainspring spring with respect to the case can be maintained almost constantly. Further, by adopting such a configuration, when the width of the mainspring spring and the width of the case (distance from the opening 43 to the bottom plate 45) are different, that is, the width of the mainspring is larger than the width of the case. In the case of a combination in which the clearance is small and a large clearance is generated in the width direction, it is possible to adopt a configuration in which the approximate center of the mainspring spring is substantially aligned with the approximate center in the width direction of the case. Furthermore, since such a configuration is possible, a plurality of types of mainspring springs having different spring constants are prepared in advance, and a desired torque is selected by selecting a necessary torque and selecting a mainspring spring. It is possible to obtain a torque generating device that can generate the torque generator, that is, a versatile torque generating device capable of selecting an appropriate spring.

  Furthermore, although each embodiment mentioned above demonstrated as a structure which provides one mainspring spring 11 with respect to one case 15 (61, 61A, 71), a mainspring spring is comprised by two or more plurality, for example, It is good also as a structure which makes two mainspring springs parallel, latches each outer end to a case, and latches each inner end to a winding core. In this case, for example, a plurality of types of mainsprings having different spring constants are prepared in advance, and a torque generator capable of generating a desired torque by selecting and combining two mainsprings from the plurality of types is provided. Obtainable. In addition, by adopting a configuration including a plurality of mainsprings, for example, in the case of a configuration including two mainsprings, even if one of the mainspring springs breaks, the torque generator is not damaged. You will be spared. And according to this torque generator, it can comprise as a single unit of simple structure.

  In addition, since a plurality of mainsprings can be assembled to one case, for example, two mainsprings are provided in parallel in the case, and each of the mainsprings is provided. It is possible to adopt a configuration in which the inner ends are respectively locked to two cores having the same or different diameters arranged in series so as to be substantially coaxial. According to this structure, it becomes the structure by which the winding core which can act | operate separately is provided in the both sides of a case, respectively, and the torque generator which can generate a torque for every winding core can be obtained. Furthermore, if the spring constants of the two mainspring springs are different from each other, a torque generating device capable of generating different torques at each winding core can be obtained. And according to this torque generator, it can comprise as a single unit of simple structure.

  Furthermore, if each of the mainsprings is provided with two mainspring springs for one case as described above, and each mainspring is locked in the opposite direction, Can provide a torque generator capable of generating torques in opposite directions. And according to this torque generator, it can comprise as a single unit of simple structure.

  Moreover, in each embodiment mentioned above, by forming a slit-shaped hole in the case peripheral wall, the locking piece 57 is formed in the first embodiment, and the cut-and-raised holes 63 and 63A are formed in the second embodiment. In the third embodiment, the locking holes 73 are provided, that is, in each of the above embodiments, the peripheral wall 53 of the case 15, 61, 61A, 71 is outward from the inner side (inner space 49). A locking portion 23 of the outer end 19 of the mainspring spring 11 formed in a hook-like hook shape with its tip turned back is locked, and a slit-shaped cutout 39 is formed on the winding core 13. And a locking portion 25 formed in a hook-like hook shape in which the tip of the inner end 21 of the mainspring spring 11 is folded back toward the inner side (hollow portion) of the core 13 with respect to the notch 39. Although it is an example that is configured to be locked, A winding core provided with a notch and / or a locking hole at each of the outer end and the inner end of the spring and provided with a protrusion that locks into the notch and / or the locking hole of the mainspring spring, and the winding core As a torque generator comprising a case in which the mainspring is accommodated in the inner space by being arranged substantially coaxially, and a notch at the outer end of the mainspring spring and a case provided on the peripheral wall with a protrusion that engages with the engagement hole. Good.

  According to such a torque generator, as in the above-described embodiments, for example, the axial length is shortened as compared with a conventional structure in which a torsion coil spring is extrapolated to the core. A mainspring spring serving as a torque generation source is accommodated in the case, and the case and the core function as a torque extracting member. Further, a protrusion is formed on the case side and the winding core, and a notch and / or a locking hole is provided in the mainspring spring, and the locking structure is configured to lock the protrusion. According to this locking structure, for example, the outer end and the inner end of the mainspring spring are configured so that the protrusion of the case protrudes inward and the protrusion of the winding core protrudes outward. The outer periphery of the outer periphery and the innermost periphery of the inner periphery of the main spring are not protruded, that is, the outer end of the mainspring spring does not protrude on the outer surface of the peripheral wall of the case. It is possible to obtain a structure in which the inner ends are not protruded into the portions and are locked to each other. And according to this torque generator, it can comprise as a single unit of a simple structure.

It is a disassembled perspective view of 1st embodiment of the torque generator which concerns on this invention. It is sectional drawing of the torque generator shown in FIG. It is sectional drawing of the torque generator of the state attached to the to-be-attached shaft. It is sectional drawing of a core. It is a perspective view of the case showing the modification of 1st embodiment. It is the block diagram which represented the case which concerns on 2nd embodiment to (a), and the modification to (b). It is a disassembled perspective view of 3rd embodiment of the torque generator which concerns on this invention. It is a perspective view of the modification of the winding core shown in FIG. It is a block diagram of 4th embodiment in case a torque generator is used for a cord reel apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Spring spring 13 ... Core 15, 15, 71 ... Case 19 ... Outer end 17 ... Spring material 21 ... Inner end 23, 25 ... Locking part 27 ... Mounted shaft 29 ... Fixing hole 39 for fixture Notch (slit)
DESCRIPTION OF SYMBOLS 41 ... Vortex center space 43 ... Opening 49 ... Internal space 53 ... Peripheral wall 57 ... Locking piece 63 ... Cut-and-raised hole 73 ... Locking hole 91 ... Lid member 100,300 ... Torque generator

Claims (5)

A mainspring spring having hook-shaped locking portions at the outer end and the inner end;
A hollow pipe-shaped core having a notch that is inserted into the spiral center space of the mainspring spring and is locked to the locking portion of the inner end;
A cylindrical case in which the winding core is disposed substantially coaxially to house the mainspring spring in an internal space, and a locking hole for locking the locking portion of the outer end of the mainspring spring is formed in the peripheral wall. And a shaft to be attached that is inserted through the hollow portion of the core, and
Equipped with,
A fixing hole for a fixture that penetrates the winding core and the attached shaft in a radial direction is formed in one end portion of the winding core that protrudes from the opening of the case, and passes through the fixing hole. The winding core and the mounted shaft are fixed by a fixing tool that
The fixing hole for the fixing tool is formed by being eccentric with respect to the center of the winding core by the thickness of the spring material of the folded inner end positioned inside the winding core of the mainspring spring. A torque generator, wherein the center of the mainspring spring substantially coincides with the center of the mounted shaft in a state of being fixed to the mounting shaft . A mainspring spring having hook-shaped locking portions at the outer end and the inner end;
A hollow pipe-shaped core having a notch that is inserted into the spiral center space of the mainspring spring and is locked to the locking portion of the inner end;
A cylindrical shape in which the winding core is disposed substantially coaxially to house the mainspring spring in an internal space, and a cut-and-raised hole is formed in a part of a peripheral wall for locking the locking portion of the outer end of the mainspring spring. And the case
An attached shaft that is inserted through the hollow portion of the core and attached;
Equipped with,
A fixing hole for a fixture that penetrates the winding core and the attached shaft in a radial direction is formed in one end portion of the winding core that protrudes from the opening of the case, and passes through the fixing hole. The winding core and the mounted shaft are fixed by a fixing tool that
The fixing hole for the fixing tool is formed by being eccentric with respect to the center of the winding core by the thickness of the spring material of the folded inner end positioned inside the winding core of the mainspring spring. A torque generator, wherein the center of the mainspring spring substantially coincides with the center of the mounted shaft in a state of being fixed to the mounting shaft . A mainspring spring having hook-shaped locking portions at the outer end and the inner end;
A hollow pipe-shaped core having a notch that is inserted into the spiral center space of the mainspring spring and is locked to the locking portion of the inner end;
The winding core is disposed substantially coaxially to accommodate the mainspring spring in the internal space, and a part of the peripheral wall is bulged outward in the radial direction to form a bulging portion, and the engagement of the outer end of the mainspring spring is performed. A cylindrical case in which a locking piece for locking the locking portion is formed inside the bulging portion;
An attached shaft that is inserted through the hollow portion of the core and attached;
Equipped with,
A fixing hole for a fixture that penetrates the winding core and the attached shaft in a radial direction is formed in one end portion of the winding core that protrudes from the opening of the case, and passes through the fixing hole. The winding core and the mounted shaft are fixed by a fixing tool that
The fixing hole for the fixing tool is formed by being eccentric with respect to the center of the winding core by the thickness of the spring material of the folded inner end positioned inside the winding core of the mainspring spring. A torque generator, wherein the center of the mainspring spring substantially coincides with the center of the mounted shaft in a state of being fixed to the mounting shaft . The case is formed in a substantially bottomed cylindrical shape, so that one end in the axial direction thereof is an opening, and the core is formed at the substantially center of the bottom plate formed at the other end in the axial direction. The torque generating device according to any one of claims 1 to 3, wherein a through-hole is formed . The case is formed in a substantially bottomed cylindrical shape, so that one end in the axial direction thereof is an opening, and the attached shaft is provided at the substantially center of the bottom plate formed at the other end in the axial direction. 4. A hole through which is inserted, and a washer for preventing contact with a mounted shaft during rotation of the case is provided on the bottom plate at the position of the hole. The torque generator in any one .

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