JP2001271845A - Rotatory driving force transmission structure and motor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong the service life of a rubber body for buffering transmitted rotatory driving force. SOLUTION: A projecting part 24, formed at a bottom plate part upper face 13a of a worm wheel 13, and a projecting part 28 formed at a lower face 15a of an output plate 15 support each damper part 25 of a rubber damper 14 in the direction of a rotation axis. The projecting parts 24, 28, formed to extend along the circumference of a circle with the rotation axis as the center respectively support each damper part 25 continuously along the circumference. The projecting part 28, formed at the lower face 15a of the output plate 15 supports the damper part 25 along the circumference of the circle with a larger diameter, as compared with the projecting part 24 formed at the bottom plate part upper face 13a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for transmitting a rotational driving force in a motor device used for, for example, a power window device of a vehicle, and a motor device provided with the structure for transmitting the rotational driving force.

[0002]

2. Description of the Related Art Conventionally, for example, in a motor device of a power window device for opening and closing a side glass for a vehicle, a worm fixed to an output shaft (not shown) of a motor 50 drives a worm wheel 51 as shown in FIG. The worm wheel 51 rotates the output plate 53 and the output shaft 54 via the rubber damper 52. Worm wheel 51 whose rotation is transmitted through rubber damper 52
And the output plate 53 are arranged on the same rotation axis.
The rubber damper 52 is accommodated in an annular damper accommodating portion 55 formed inside the worm wheel 51, as shown in FIG.
As shown in FIG.
a and the output plate lower surface 53a are held in the rotation axis direction. The rubber damper 52 includes substantially fan-shaped damper portions 58 disposed between an engaging portion 56 provided on the worm wheel 51 and an engaging convex portion 57 provided on the output plate 53.

When the motor 50 rotates and the side glass rises, when the side glass hits the window frame and the upward movement is restricted, the rotation of the output plate 53 is restricted and the worm wheel 51 is moved through the respective damper parts 58. Rotation is regulated. At this time, each damper portion 58 is elastically deformed so as to be compressed in the same circumferential direction by a large rotational driving force applied in the circumferential direction of the rotation axis and expanded in the rotation axis direction. Therefore, the force for stopping the motor 50 is applied to each of the damper sections 5.
The shock generated by the motor 50 and absorbed by the motor 50 is buffered. At this time, each damper portion 58 elastically deformed so as to expand in the rotation axis direction is supported in the rotation axis direction by the bottom plate upper surface 51a and the output plate lower surface 53a.

Here, each damper part 58 and the bottom plate part upper surface 51
a and the gap between the output plate lower surface 53a is too small,
Each damper portion 58 cannot be elastically deformed by sufficiently expanding in the direction of the rotation axis. For this reason, each damper unit 58
The force for stopping the motor 50 cannot be sufficiently absorbed, and the impact cannot be sufficiently buffered.

When each of the damper portions 58 is elastically deformed, both side surfaces 58a of the damper portion 58 become upper surface 51a of the bottom plate portion and lower surface 53 of the output plate.
a. For this reason, both side surfaces 58 of each damper portion 58
a is stuck to each surface 51a, 53a, and wear is promoted.

Therefore, in the motor device described above, FIGS.
As shown in FIG. 5, the projections 58b supporting the respective damper portions 58 are integrally formed on both side surfaces 58a of the respective damper portions 58 so as not to come into contact with the bottom plate upper surface 51a and the output plate lower surface 53a in a state where no rotational driving force is applied. Was provided.

In this case, when a large rotational driving force is applied, as shown in FIG. 10, the damper portion 58 is elastically deformed so that portions other than the protrusion 58b expand in the direction of the rotation axis, and the bottom plate portion is deformed. The upper surface 51a and the lower surface 53a of the output plate are pressed against each other. For this reason, each damper portion 58 is elastically deformed so as to expand sufficiently in the direction of the rotation axis, and the shock generated in the motor 50 is sufficiently buffered. At the same time, the entire side surfaces 58a are not pressed against each other as in the case where the projections 58b are not provided.
Both side surfaces 58a are hard to stick to the respective surfaces 51a, 53a, and wear is suppressed.

[0008]

However, in the above-mentioned motor device, since the projection 58b is formed integrally with the damper 58, the projection 58b wears out early during use and the height is reduced. Lower. For this reason, the damper part 58
Of the bottom plate portion upper surface 51a and the output plate lower surface 53a, so that it is easy to stick and wear is promoted. Therefore, the life of the rubber damper 52 cannot be sufficiently extended.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to transmit a rotational driving force that can prolong the life of a rubber body that buffers the transmitted rotational driving force. An object of the present invention is to provide a motor device having a structure and a structure for transmitting the rotational driving force.

[0010]

According to a first aspect of the present invention, an output-side rotator is arranged on the same rotation axis with respect to an input-side rotator driven to rotate.
A rotational driving force for transmitting a rotational driving force from the input-side rotator to the output-side rotator via a rubber member supported in the rotation axis direction by each support surface of the input-side rotator and the output-side rotator; In the transmission structure, the support surface of at least one of the input-side rotator and the output-side rotator is provided with a convex portion that supports the rubber body. is there.

According to the first aspect of the present invention, when the rotation of the output-side rotator is restricted while the input-side rotator is driven to rotate, a large force is applied to the rubber member in the circumferential direction. . Then, the rubber body is elastically deformed so as to be compressed in the circumferential direction and expanded in the rotation axis direction. At this time, the rubber body
The portion other than the portion supported by the convex portion is elastically deformed so as to expand and presses against each support surface. For this reason, since the elastic deformation of the rubber body in the rotation axis direction is not restricted except at the portion supported by the convex portion, the rubber body is elastically deformed so as to expand sufficiently in the rotation axis direction. Therefore, the rotational driving force transmitted from the input-side rotating body to the output-side rotating body is sufficiently absorbed by the rubber body, and the shock generated on the input-side rotating body is sufficiently buffered. In addition, since the rubber body is not pressed against the support surface at the portion supported by the convex portion, the side surface hardly sticks to the support surface. Therefore, the wear of the side surface of the rubber body is not promoted. Furthermore, since the convex portion is formed on the rotating body instead of the rubber body, it does not wear even if used for a long period of time. Therefore, wear on both sides of the rubber body is not promoted for a long time.

According to a second aspect of the present invention, there is provided a motor, an input-side rotator rotationally driven by the motor, an output-side rotator disposed on the same rotation axis as the input-side rotator, A rubber body that is supported in the rotation axis direction by each support surface of the side rotator and the output side rotator, and that transmits a rotational driving force from the input side rotator to the output side rotator. A motor device characterized in that a convex portion for supporting the rubber body is provided on at least one support surface of the side rotator and the output side rotator.

According to the second aspect of the present invention, in the motor device for outputting the rotational driving force of the motor to the output side rotating body via the rubber body, the wear on both side surfaces of the rubber body is promoted for a long period of time. Not done.

According to a third aspect of the present invention, in the second aspect of the present invention, the convex portions are provided on the support surfaces of the input-side rotator and the output-side rotator, respectively. Features.

According to the invention described in claim 3, according to claim 2
In addition to the effects of the invention described in (1), both sides of the rubber body are supported by the convex portions, respectively, so that the rubber body does not easily stick to both support surfaces, and wear on both sides is not promoted.

According to a fourth aspect of the present invention, in the second or third aspect, the convex portion supports the rubber body along a circumference of a circle centered on the rotation axis. It is characterized by being formed so that it does.

According to the invention described in claim 4, according to claim 2,
Alternatively, in addition to the effect of the third aspect of the present invention, since the side surface of the rubber body hardly sticks to the support surface over the entire circumference in the circumferential direction with respect to the rotation axis, wear of the side surface is not promoted more reliably.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the convex portion formed on the support surface of the input-side rotator is formed on the support surface of the output-side rotator. The formed convex portion is formed so as to support the rubber body along the circumference of a circle having a larger diameter.

According to the invention set forth in claim 5, according to claim 4,
In addition to the effect of the invention described in (1), the outer peripheral portion of the rubber body is elastically deformed and pressed against the support surface side of the input side rotating body. For this reason,
The urging force in the rotation axis direction based on the elastic deformation of the rubber body is mainly applied to the input-side rotating body, and is hardly applied to the output-side rotating body.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment in which the present invention is embodied in a motor device of a power window device for a vehicle.
This will be described with reference to FIG.

As shown in FIG. 1, the motor device 1 includes a motor body 10 and a speed reduction unit 11. An output shaft (not shown) of the motor main body 10 extends to the speed reduction unit 11 side. The reduction unit 11 includes a housing 12, a worm wheel 13, a rubber damper 14, an output plate 15, and an output shaft 16.
And a lid 17 and the like.

The housing 12 is integrally formed of a synthetic resin and includes a motor fixing portion 12a, a worm housing 12b, and a wheel housing 12c. Motor fixing part 12a
, The motor body 10 is fixed, and its output shaft extends into the worm housing 12b. A worm gear (not shown) is fixed to the output shaft, and a part of the worm gear is disposed in the wheel housing 12c.

The wheel accommodating portion 12c is formed in a substantially cylindrical shape with a bottom, and a cylindrical shaft support portion 18 is formed at the center of the upper surface of the bottom plate portion. The shaft support portion 18 has a shaft hole 18a penetrating in the axial direction. On the upper surface of the bottom plate of the wheel accommodating portion 12c, a plurality of convex supporting portions 19 are formed at equal angular intervals along the circumference of a circle centered on the rotation axis. The convex support 19 is formed to support the worm wheel 13. The worm wheel 13 is housed in the wheel housing 12c.

The worm wheel 13 is integrally formed of a synthetic resin into a substantially cylindrical shape having a bottom, and a gear portion 20 meshed with the worm gear is formed on the outer peripheral surface thereof. A shaft hole 21 through which the shaft support 18 can be inserted is formed in the center of the worm wheel 13. An annular damper housing 22 for housing the rubber damper 14 is provided between the gear 20 and the shaft hole 21. Three engagement portions 23 are formed on the bottom plate upper surface 13 a of the damper housing 22.
The engaging portions 23 are formed at equal angular intervals so as to extend from the outer peripheral surface of the damper housing 22 to the inner peripheral side in the radial direction of the rotation axis. The engaging portions 23 are formed at equal angular intervals, and divide the damper accommodating portion 22 into three substantially fan-shaped portions. In addition, as shown in FIG. 2, a projecting ridge 24 is formed on the upper surface of the bottom plate of the damper housing 22 as a convex portion extending along the circumference of a circle centered on the rotation axis. The worm wheel 13 has its shaft hole 21
A shaft support portion 18 is inserted through the shaft support portion 18, and each convex support portion 19 abuts on the lower surface of the bottom plate portion, and the gear portion 20 is rotatably housed in the wheel housing portion 12c in a state of being meshed with the worm gear. The rubber damper 14 is housed in the damper housing 22.

As shown in FIG. 1, the rubber damper 14 is integrally formed, and six damper portions 25 formed in a substantially sector shape are formed.
On the inner peripheral side, they are connected annularly by a connecting portion 25a. Each damper part 25 is formed with the same thickness. The rubber damper 14 is accommodated in the damper accommodating portion 22 in a state in which two adjacent damper portions 25 are accommodated in respective portions partitioned by the respective engaging portions 23.

At this time, as shown in FIG. 4, the rubber damper 14 is configured such that each of the damper portions 25 is formed by the protruding ridge 24 abutting substantially at the center in the radial direction of the bottom plate portion upper surface 13.
It is supported so as not to contact with a. That is, each damper unit 2
5 is continuously supported by the projections 24 along the circumference of a circle centered on the rotation axis. The output plate 15 is disposed on the rubber damper 14.

As shown in FIG. 1, the output plate 15 is formed of a metal plate into a substantially disk shape, and a shaft fitting portion 26 to which the output shaft 16 is fixed is formed at the center. On the lower surface 15 a of the output plate 15, three engaging projections 27 that engage with the gap between the two damper portions 25 partitioned by the two adjacent engaging portions 23 in the damper housing portion 22 are provided at equal angular intervals. Is formed. Further, as shown in FIG. 3, a projecting ridge portion 28 is formed on the lower surface 15a of the output plate as a convex portion extending along a circle centered on the rotation axis. Each ridge 28
4, is formed so as to extend along the circumference of a circle having a larger diameter than each of the ridges 24 formed on the bottom plate upper surface 13a of the worm wheel 13. As shown in FIG. Then, the output plate 15 has the protruding ridges 28
And is accommodated in the worm wheel 13 in a state where each engaging projection 27 is engaged with a gap between the corresponding damper sections 25.

At this time, each damper part 2 of the rubber damper 14
5 is supported by the projection 28 so as not to contact the output plate lower surface 15a. That is, each of the damper portions 25 is continuously supported by the protrusions 28 along the circumference of a circle centered on the rotation axis. Accordingly, each of the damper portions 25 of the rubber damper 14 includes a ridge 24 provided on the bottom plate upper surface 13 a of the worm wheel 13 and a lower surface 1 of the output plate 15.
The protrusions 28 provided on the 5a support the upper surface 13a and the lower surface 15a in the rotation axis direction such that they do not come into contact with both the upper surface 13a and the lower surface 15a in a natural state where no rotational driving force is applied. The output shaft 16 is fitted into the shaft fitting portion 26 of the output plate 15 through a shaft hole 18 a of the shaft support 18.

The output shaft 16 has a fitting portion 30 fitted to the shaft fitting portion 26 at the upper end of the shaft portion 29, and a gear portion 31 below the shaft portion 29. The gear portion 31 is meshed with a drive-side gear portion of a window regulator (not shown).
Then, the output shaft 16 rotatably penetrates the shaft portion 29 through the shaft hole 18 a of the shaft support portion 18, and connects the fitting portion 30 to the output plate 15.
Is supported by the wheel accommodating portion 12c in a state of being integrally rotatably fitted to the shaft fitting portion 26. The output shaft 16 is formed by an E-ring 32 engaged with an engagement groove 30 a provided at an upper end of a fitting portion 30 projecting upward from the shaft fitting portion 26.
It is fixed so as not to fall out of the shaft fitting portion 26 and the shaft hole 18a. The output shaft 16 has a shaft 29 and a gear 31.
An O-ring 33 for sealing the space between the shaft portion 29 and the shaft hole 18a is mounted between them.

The lid 17 is fixed to the housing 12 while covering the upper opening of the wheel accommodating portion 12c. Next, the operation of the motor device configured as described above will be described.

When the side glass hits the window frame and its movement is restricted while the side glass is being raised, the operation of the output shaft 16 and the output plate 15 is restricted via the window regulator. At this time, the circumferential force applied to each damper portion 25 pressed against each engagement protrusion 27 of the output plate 15 by each engagement portion 23 of the worm wheel 13 sharply increases. Then, each damper part 25 is elastically deformed so as to be compressed in the circumferential direction and expanded in the rotation axis direction.

At this time, each damper portion 25 is provided with each ridge 2
It is elastically deformed in the direction of the rotation axis so as to expand at portions other than the portions supported by 4, 28. For this reason, the elastic deformation of each damper portion 58 in the rotation axis direction is caused by each of the protrusions 24 and 28.
Therefore, each damper portion 25 is elastically deformed so as to expand sufficiently in the direction of the rotation axis. Therefore, the worm wheel 13 to the output plate 15
The rotational driving force transmitted to the motor body 10 is sufficiently absorbed by the damper portions 58, and the shock generated on the motor body 10 side is sufficiently buffered.

Each of the damper portions 25 is provided with a corresponding one of the ridge portions 24, 28.
Since the side surfaces 25b are not pressed against the bottom plate upper surface 13a and the output plate lower surface 15a, the side surfaces 25b are less likely to stick to the surfaces 13a, 15a. Therefore, abrasion of both side surfaces 25b of each damper portion 25 is not promoted.

Further, the ridges 24 are formed integrally with the worm wheel 13 made of a synthetic resin, and the ridges 28 are formed integrally with the output plate 15 formed of a metal plate. Used and does not wear. Therefore,
Wear of both side surfaces 25b of each damper part 25 is not promoted for a long period of time.

In addition, the side surface 25b of each damper portion 25 extends over the entire surface 13a, 15a in the circumferential direction with respect to the rotation axis.
Therefore, the abrasion of the side surface 25b is not more reliably promoted.

Further, since the outer peripheral portion of each damper portion 25 is pressed against the upper surface 13a of the bottom plate portion of the worm wheel 13, the urging force in the direction of the rotational axis based on the elastic deformation of each damper portion 25 is mainly applied to the worm wheel 13, It is difficult to join the output plate 15.

According to the above-described embodiment, the following effects can be obtained. (1) In the present embodiment, the rubber damper 14 is supported in the rotation axis direction by the ridges 24 formed on the bottom plate upper surface 13a and the ridges 28 formed on the output plate lower surface 15a. Therefore, both side surfaces 25b of each damper part 25 correspond to the bottom plate part upper surface 13a.
Also, it is hard to stick to the lower surface 15a of the output plate, and the wear thereof is not promoted. Also, since the ridges 24 and 28 do not wear,
Wear of each damper portion 25 is not promoted for a long period of time.
As a result, the life of the rubber damper 14 can be made longer than before.

(2) In addition, in this embodiment, the ridge 24 is provided on the bottom plate upper surface 13a and the output plate lower surface 15a is provided.
a was provided with a ridge. Therefore, both side surfaces 25b of each damper portion 25 are hard to stick to the bottom plate portion upper surface 13a and the output plate lower surface 15a, and the wear thereof is not promoted.

(3) In addition, in the present embodiment, each protruding portion 24, 28 supports each damper portion 25 continuously along the circumference of a circle centered on the rotation axis. Therefore, it is difficult for the side surface 25b of each damper part 25 to stick to each surface 13a, 15a over the entire circumference in the circumferential direction with respect to the rotation axis.
The wear is not more reliably promoted.

(4) In the present embodiment, in addition to the projection 24 formed on the bottom plate upper surface 13a so as to extend along the circumference of the circle centered on the rotation axis, a circle having a larger diameter is used. A ridge 28 is formed on the lower surface 15a of the output plate so as to extend along the circumference. Therefore, since the outer peripheral portion of each damper portion 25 is pressed against the bottom plate upper surface 13a, the urging force in the rotation axis direction based on the elastic deformation of each damper portion 25 is mainly applied to the worm wheel 13 and is hardly applied to the output plate 15. . As a result, the possibility that the E-ring 32 comes off becomes very small,
The possibility that the output shaft 16 and the output plate 15 fall off can be extremely reduced.

(5) In addition, in this embodiment, the ridge 2
4 is formed integrally with the worm wheel 13 and the ridges 28 are formed.
Are formed integrally with the output plate 15, so that the number of parts and the number of assembling steps do not increase.

Hereinafter, embodiments of the invention other than the above-described embodiment will be listed as other examples. In the above embodiment, each damper portion 2 is formed by the ridges 24 and 28 extending along the circumference of a circle centered on the rotation axis.
5 was supported along the circumference with respect to the rotation axis. A plurality of these may be arranged along the circumference, and each of the damper sections 25 may be supported along the circumference by a convex portion that supports the damper section 25 at one point. Alternatively, each of the damper portions 25 may be supported along the circumference by one or more ridges that extend along the circumference and support the damper portions 25 in a state where they are not continuous in the circumferential direction. In each case,
Each of the dampers 25 is provided with the respective surfaces 13a, 1
It hardly sticks to 5a, and its wear is not promoted.

In the above embodiment, the upper surface 13a of the bottom plate portion
The projections 24 and 28 are formed on the lower surface 15a of the output plate and along one circumference, respectively. As shown in FIG. 6, for example, the projections 24a are formed along the circumferences of two circles having different diameters. ,
24b, 28a and 28b may be formed respectively. In this case, since both side surfaces 25b of each damper portion 25 are less likely to stick to the respective surfaces 13a and 15a over the entire circumferential direction, the wear thereof can be more reliably prevented from being promoted.

In the above embodiment, each ridge 24, 2
8 is formed so as to extend in the circumferential direction along the circumference of a circle having the rotation axis as the center axis. However, as shown in FIGS. Alternatively, the protrusions 24c and 28c may extend in the radial direction. Also in this case, both sides 25b of each damper part 25 are
a, 15a, so that the wear thereof is not promoted.

In the above embodiment, each damper portion 25 is supported along the circumference by the ridges 24 and 28 extending along the circumference of the circle about the rotation axis. This is not arranged on the same circumference, and each damper part 2 is formed by a plurality of convex parts supporting each damper part 25 at points.
5 may be supported. Also in this case, it is possible to prevent the respective damper portions 25 from sticking to the respective surfaces 13a and 15a, and to prevent the wear thereof from being promoted.

In the above embodiment, the bottom plate upper surface 13a
The projections 24 and 28 are provided on the lower surface 15a of the output plate, respectively. However, the projections 24 and 28 are provided only on one of the two surfaces 13a and 15a, and the dampers 25 on the side where the projections are not provided.
May be provided with a projection 58b described in the related art. Also in this case, the life of the rubber damper 14 can be made longer than before.

In the above embodiment, each ridge 24, 2
8 are provided integrally with the worm wheel 13 and the output plate 15, respectively. However, the ridges 24 and 28 may be formed separately and assembled to the worm wheel 13 and the output plate 15 by means such as bonding.

In the above embodiment, the present invention is applied to the transmission structure of the rotational driving force in the motor device 1 of the vehicle power window device. However, the present invention is applied to other motor devices such as the vehicle power door opening / closing device and the power roof opening / closing device. Is also good.

Hereinafter, the technical ideas grasped from each of the above embodiments will be described together with their effects. (1) The motor device according to any one of claims 1 to 4, wherein the convex portion is formed integrally with the support surface. According to such a configuration, the number of components and the number of assembly steps do not increase.

(2) In the invention described in claim 5,
The structure for transmitting a rotational driving force provided on each of the support surfaces of the input-side rotator and the output-side rotator. According to such a configuration, wear from both sides of the rubber body is not promoted.

(3) In the invention described in the above (2), the convex portion is formed so as to support the rubber body along a circumference of a circle centered on the rotation axis. Power transmission structure. According to such a configuration, abrasion of the rubber body is not more reliably promoted.

(4) In the invention described in the above (3), the convex portion formed on the support surface of the output-side rotary member is different from the convex portion formed on the support surface of the input-side rotary member. The portion is a rotational driving force transmission structure formed to support the rubber body along the circumference of a larger diameter circle.
According to such a configuration, a force in the rotation axis direction is not easily applied to the output rotating body.

(5) Claim 5 or the above (2) to (4)
In the invention according to any one of the above, the convex portion,
A rotational driving force transmission structure integrally formed on the support surface. According to such a configuration, the number of components and the number of assembly steps do not increase.

[0054]

According to the first to fifth aspects of the present invention, the wear of the rubber member that buffers the transmitted rotational driving force is not promoted for a long period of time, so that the life of the rubber member is further extended. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a motor device according to an embodiment.

FIG. 2 is a plan view of a worm wheel.

FIG. 3 is a plan view of an output plate.

FIG. 4 is a longitudinal sectional view of a worm wheel, a rubber damper, and an output plate.

FIG. 5 is a longitudinal sectional view of a main part showing a damper part in an operating state.

FIG. 6 is an essential part longitudinal cross sectional view showing a damper part in an operating state in another embodiment.

7A is a plan view of a worm wheel having a convex portion according to another embodiment, and FIG. 7B is a plan view of an output plate.

FIG. 8 is an exploded perspective view showing a conventional motor device.

FIG. 9 is a vertical schematic sectional view of a worm wheel, a rubber damper, and an output plate.

FIG. 10 is a longitudinal sectional view showing a damper part in an operating state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Motor device, 12 ... Motor, 13 ... Warm wheel as input side rotating body, 13a ... Bottom plate upper surface as support surface, 14 ... Rubber damper as rubber body, 15 ... Output plate as output side rotating body, 15a ... The lower surface of the output plate as a support surface, 24... A ridge as a convex, and 28. a ridge as a convex.

Claims (5)

[Claims] An output-side rotating body (15) is arranged on the same rotation axis with respect to an input-side rotating body (13) that is driven to rotate, and the input-side rotating body (13) and the output-side rotating body (15) are arranged. )
The rotational driving force is transmitted from the input side rotating body (13) to the output side rotating body (15) via the rubber body (14) supported in the rotation axis direction by the respective supporting surfaces (13a, 15a). In the transmission structure of rotational driving force, at least one of the support surfaces (13a, 15a) of the input-side rotator (13) and the output-side rotator (15)
A rotational driving force transmission structure provided with convex portions (24, 28) for supporting the rubber body (14). 2. A motor (10), an input-side rotating body (13) rotationally driven by the motor (10), and an output-side rotation arranged on the same rotation axis as the input-side rotating body (13). Body (15) supported in the rotation axis direction by the support surfaces (13a, 15a) of the input-side rotator (13) and the output-side rotator (15). A motor device comprising: a rotating body (15); and a rubber body (14) for transmitting a rotational driving force to the rotating body (15), wherein at least one of the support surfaces (13a, 13a, 15a) A motor device provided with convex portions (24, 28) for supporting the rubber body (14). 3. The projection (24, 28) is provided on each of the support surfaces (13a, 15a) of the input-side rotator (13) and the output-side rotator (15). 3. The motor device according to 2. 4. The rubber body (14) extends along a circumference of a circle centered on the rotation axis.
4 or 3 is formed so as to support
The motor device according to claim 1. 5. A support surface (1) of the input-side rotator (13).
In contrast to the convex portion (24) formed in 3a), the convex portion (28) formed on the support surface (15a) of the output-side rotating body (15) has a larger diameter circle. The motor device according to claim 4, wherein the motor device is formed to support the rubber body (14) along a circumference.