JP2001343052A - Motor apparatus and rotary driving force output plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary driving force output plate which can be produced by blanking from the same metallic plate as used before and is harder for a connecting section with a driving force output shaft to become loose. SOLUTION: In an output plate 1 made of the metallic plate by blanking, a bent portion 27b folded down one way in the direction of axis in the middle thereof and a shaft fitting portion 28 which is folded down opposite way in the direction of axis at the inner side of the bent portion 27b and is furnished with a shaft fitting hole 28a longer than the thickness of the metallic plate in the direction of the rotational axis are formed by a press and deep drawing work. The output plate 15 and the output shaft 16 are connected integrally rotatable by fitting a mating shaft portion 32 provided on the output shaft 16 to the shaft fitting hole 28a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, for example, a motor device of a power window device for a vehicle for opening and closing a side glass of a vehicle door has been disclosed.
As shown in FIG. 6, a worm fixed to an output shaft (not shown) of the motor body 50 rotationally drives a worm wheel 51, and the worm wheel 51 rotationally drives an output plate 53 and an output shaft 54 via a rubber damper 52. It has become.

[0003] The worm wheel 51, the output plate 53 and the output shaft 54 are arranged on the same rotation axis. FIG.
As shown in FIG. 5, the worm wheel 51 is housed in a wheel housing portion 55a provided in the gear housing 55,
It is rotatably supported by a bearing portion 56 provided on the upper surface of the bottom plate portion. The rubber damper 52 is a worm wheel 5
1 is accommodated in an annular damper accommodating portion 51a that opens upward. The output shaft 54 is rotatably supported by a shaft hole 56a provided in the bearing portion 56, and is provided with a damper accommodating portion 51a.
The output plate 53 arranged in the opening of the support plate is supported. Each of the engaging portions 51b provided on the worm wheel 51
The rotation driving force is transmitted from the worm wheel 51 to the output plate 53 by interposing the respective damper portions 52a of the rubber damper 52 between the worm wheel 51 and the respective engagement protrusions 53a provided on the output plate 53.

The output plate 53 is formed by stamping a metal plate. A shaft fitting hole 53b is formed at the center of the output plate 53 by punching.
As shown in FIG. 8, a fitting shaft portion 54a of the output shaft 54 is fitted in the shaft fitting hole 53b. In addition, the engaging projection 5
3a is formed by subjecting a notch formed in the outer peripheral portion of the output plate 53 to die bending.

When the side glass rises due to the rotation of the motor body 50 and the side glass hits the window frame and the rise is regulated, the rotation of the output plate 53 is regulated and the worm wheel 51 is moved through the rubber damper 52. Rotation is regulated. At this time, the force for stopping the motor body 50 is absorbed by the rubber damper 52, and the shock generated in the motor body 50 is buffered.

[0006]

However, in the above-mentioned motor device, there is a problem that the rattling between the output plate 53 and the output shaft 54 occurs in the circumferential direction during the use period. This rattling occurred due to the shaft fitting hole 53b of the output plate 53 being deformed by the rotational driving force. That is, when the shock is buffered, the output shaft 53 is
Of the shaft fitting hole 53b with respect to the force applied to the shaft fitting hole 53b.
The structural strength of the side was not enough.

Therefore, in order to solve such a problem,
By increasing the thickness of the output plate 53, the shaft fitting hole 53b
Can be considered to be difficult to deform. However, if the thickness of the metal plate used for punching the output plate 53 is made larger than it is now, the punching becomes difficult, the life of the press working equipment becomes shorter, and the processing accuracy is reduced.

It is also conceivable to replace the metal sheet material with a higher strength while keeping the sheet thickness as it is. However, even in this case, there is a problem that press punching becomes difficult, the life of the press working equipment becomes shorter, and the material cost becomes higher.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make it possible to perform punching from the same metal plate as in the prior art, and to further transmit a rotational driving force. A motor device having a rotational driving force transmission mechanism including a rotational driving force output plate that can make rattling less likely to occur at a connection portion with an output shaft; and
An object of the present invention is to provide a rotary driving force output plate.

[0010]

In order to solve the above-mentioned problems, the invention according to the first aspect is directed to a motor body, a driving force transmitting body to which the rotational driving force of the motor body is transmitted, and the driving force transmitting body. An elastic body interposed so as to be circumferentially engaged with the transmitting body, to which the rotational driving force of the driving force transmitting body is transmitted; and a metal plate material, wherein the rotational driving force of the motor body is the driving force. A driving force output plate that is transmitted via a transmission body and an elastic body, and a driving force output shaft that is disposed on the same rotation axis as the driving force output plate and that is integrally rotatably fixed to the driving force output plate. In the motor device, the driving force output plate has a bent portion that is bent in one direction in the axial direction at the center thereof, and is bent in the other axial direction from the inside of the bent portion, and the plate of the metal plate material is formed. Longer in the rotation axis direction than in the thickness A shaft fitting portion having a shaft fitting hole is formed; a fitting shaft portion fitted to the shaft fitting hole is formed on the driving force output shaft; The driving force output plate and the driving force output shaft are integrally rotatably connected by fitting a shaft portion.

According to a second aspect of the present invention, in the first aspect of the invention, the shaft fitting portion includes a thickness range of the driving force output plate within a length range in the rotation axis direction. It is formed as follows.

[0012] The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described in the above, the bent portion of the driving force output plate,
The driving force output shaft is provided on the side to be inserted. The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the shaft fitting hole has three or more engagement surfaces in one of the circumferential direction with the driving force output shaft. have.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the driving force output plate is formed on an outer peripheral portion so as to protrude in the direction of the rotation axis. An engaging projection which is engageable with the elastic body in a circumferential direction with respect to the rotation axis is integrally formed.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the engaging projection and the bent portion are formed in the same direction with respect to the driving force output plate. The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the driving force output shaft is provided in a shaft hole of a bearing portion in which the driving force transmitting body is rotatably supported. The driving force output plate is rotatably supported, and a portion of the shaft fitting portion and the bent portion of the driving force output plate is accommodated in a concave portion provided on an end surface of the bearing portion.

An eighth aspect of the present invention is a rotary driving force output plate formed of a metal plate and having a shaft fitting hole into which a driving force output shaft disposed on a rotation axis thereof is fitted. A bent portion bent at one end in the axial direction at the center thereof, and a shaft fitting hole bent from the inside of the bent portion to the other axial direction and longer in the rotation axis direction than the plate thickness of the metal plate material. And a shaft fitting portion provided.

(Operation) According to the first aspect of the present invention,
Since the shaft fitting portion (shaft fitting hole) into which the driving force output shaft is fitted is longer in the rotation axis direction than the thickness of the metal plate, the shaft of the driving force output plate is shifted from the fitting shaft portion of the driving force output shaft. The concentration of the stress generated near the inner peripheral surface by the force applied to the fitting hole is reduced. Therefore, even if the thickness of the metal plate material to be punched remains the same as the conventional one, the shaft fitting hole is less likely to be deformed by the transmitted rotational driving force. As a result, the driving force output plate can be formed by punching from the same metal plate material as in the related art, and rattling is less likely to occur at the connection portion with the driving force output shaft.

According to the second aspect of the present invention, the size of the center portion of the drive-side transmission plate in the direction of the rotation axis is the same as the size of the shaft fitting portion. Therefore, the size of the center portion of the driving force output plate in the rotation axis direction is unlikely to increase. As a result, the size of the driving force transmission mechanism in the rotation axis direction can be prevented from increasing as much as possible.

According to the third aspect of the present invention, the bent portion of the driving force output plate is provided on the side where the driving force output shaft is inserted. In this case, since the bent portion has a rounded corner when bent, the opening of the shaft fitting hole on the bent portion side slightly widens. Therefore, the driving force output shaft can be easily inserted into the shaft fitting hole.

According to the fourth aspect of the present invention, since the shaft fitting hole has three or more engagement surfaces in one of the circumferential direction with the driving force output shaft, the driving force output plate and the driving force are formed. The output shaft and the output shaft are securely engaged with each other in the circumferential direction. Therefore, the driving force (rotational force) can be reliably transmitted from the driving force output plate to the driving force output shaft, and the concentration of stress can be sufficiently reduced. Further, when the shaft fitting portion (shaft fitting hole) is formed by plastic working, if the shaft fitting hole is formed in a polygonal shape having three or more engaging surfaces at equal intervals in the circumferential direction, the shaft fitting portion is formed. The thickness of the part can be stabilized.

According to the fifth aspect of the present invention, since the notch portion as in the related art cannot be formed in the driving force output plate, the elastic body to which a force is applied in the circumferential direction from the engagement convex portion enters the notch portion. Therefore, there is no bending to the driving force output plate side. Therefore,
The elastic body is elastically deformed only in the circumferential direction with respect to the rotation axis by the rotational driving force. As a result, an excessive force applied in the circumferential direction can be more reliably absorbed.

According to the sixth aspect of the present invention, since the engaging convex portion and the bent portion are formed in the same direction with respect to the driving force output plate, the engaging convex portion and the bent portion are pressed. When forming by processing, it can be formed by pressing in the same direction.

According to the seventh aspect of the present invention, the driving force output plate and the driving force transmitting body are supported at the end of the driving force output shaft so as to partially overlap in the rotation axis direction. For this reason,
While the driving force transmission body is supported by a longer bearing,
The driving force transmitting body and the driving force output plate are arranged within a narrower range on the rotation axis. Therefore, the rotation of the driving force transmission body can be further stabilized while the driving force transmission structure is kept from becoming as large as possible in the rotation axis direction.

According to the eighth aspect of the present invention, the shaft fitting hole is less likely to be deformed by the rotational driving force even when punching is performed from the same metal plate as in the prior art.

[0024]

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 main body 10 and a speed reduction unit 11. Motor body 10
Has an output shaft (not shown) extending toward the speed reduction unit 11. The reduction unit 11 includes a gear housing 12, a worm wheel 13 as a driving force transmitting body, a rubber damper 14 as an elastic body, an output plate 15 as a driving force output plate, an output shaft 16 as a driving force output shaft, a lid 17, and the like. It is configured.

The gear housing 12 is integrally formed of a synthetic resin and includes a motor fixing portion 12a, a worm housing portion 12b, and a wheel housing portion 12c. Motor fixing part 12
The motor body 10 is fixed to a, and the output shaft thereof 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 the cylindrical bearing portion 1 is provided at the center on the upper surface of the bottom plate portion.
8 are formed. The bearing portion 18 has a concave portion 18a formed on an upper end surface (a distal end surface) thereof and a shaft hole 18b formed in a central axis direction thereof. On the upper surface of the bottom plate portion of the wheel accommodating portion 12c, a plurality of convex support portions 19 are formed at equal angular intervals along the circumference of a circle centered on the central axis of the bearing portion 18. The convex support 19 is provided to rotatably support the worm wheel 13 in the wheel housing 12c. 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 meshing with the worm gear is formed on the outer peripheral surface thereof. A shaft hole 21 is formed in the center of the worm wheel 13 so as to penetrate the worm wheel 13 in the center axis direction. An annular groove-shaped damper accommodating portion 22 that opens upward is formed between the gear portion 20 and the shaft hole 21.

Three engaging portions 23 are formed on the upper surface of the bottom plate of the damper accommodating portion 22. The engaging portions 23 are provided at equal angular intervals and are formed so as to extend in the radial direction with respect to the center axis of the shaft hole 21. Each engaging portion 23 divides the damper accommodating portion 22 into three substantially fan-shaped portions centered on the central axis. In addition, on the upper surface of the bottom plate portion of the damper accommodating portion 22, there is formed a ridge portion 24 extending along the circumference of a circle centered on the central axis. As shown in FIG. 2, the worm wheel 13 has a bearing portion 18 inserted through a shaft hole 21 and a convex support portion 19 on the lower surface of the bottom plate portion.
Are rotatably accommodated in the wheel accommodating portion 12c by abutment. The gear section 20 includes a damper housing section 22.
The worm gear arranged therein is meshed. That is, the worm wheel 13 includes the bearing 18 and the shaft hole 21.
Are rotatably accommodated in the wheel accommodating portion 12c with their respective central axes as their rotation axes. Note that the upper end surface of the worm wheel 13 is arranged at a position higher than the upper end surface of the bearing portion 18. The rubber damper 1 is provided in the damper housing 22.
4 are accommodated.

As shown in FIG. 1, the rubber damper 14 has six damper portions 25 which are integrally formed in an annular shape and are formed in a substantially fan shape. Each of the damper portions 25 is annularly connected by a connecting portion 26 on the inner peripheral side. The rubber damper 14 is accommodated in each chamber of the damper accommodating portion 22 in which two adjacent damper portions 25 are partitioned by the respective engaging portions 23. Further, between the adjacent damper portions 25 separately housed in the adjacent chambers, the engaging portions 23 are respectively provided.
Is inserted. The rubber damper 14 is, as shown in FIG.
Each of the dampers 25 is supported by a ridge 24 that abuts the lower surface of the damper at substantially the center in the radial direction. Rubber damper 14
The output plate 15 is arranged on the upper side.

As shown in FIG. 1, the output plate 15 is formed in a substantially disk shape by stamping a metal plate. In the center of the disk portion 27a of the output plate 15, the output plate 1
5, an annular bent portion 27b that is bent so as to gradually protrude below the lower portion 5, and a cylindrical shaft that is bent upward from the inside of the bent portion 27b to above the output plate 15 and to which the output shaft 16 is fixed. The fitting portion 28 is formed by plastic working such as press drawing and punching. In this case, the distal end portion 27c of the bent portion 27b and the distal end portion 28c of the shaft fitting portion 28 are located on both sides of the disk portion 27a. That is, the shaft fitting portion 28 is formed so as to include the plate thickness range D of the output plate 15 within its length range L in the rotation axis direction, as shown in FIG.

The shaft fitting portion 28 is formed with a substantially cross-shaped shaft fitting hole 28a that penetrates in the direction of the center axis of the output plate 15 (a plane cross section orthogonal to the center axis). That is, the shaft fitting hole 28a is formed so as to extend in the center axis direction with the same cross-sectional shape longer than the thickness of the metal plate material obtained by stamping the output plate 15. Shaft fitting hole 28a
Has an engagement surface 28b to which a rotational driving force is applied from the output shaft 16. In the shaft fitting hole 53b of the conventional output plate 53, the size of the engagement surface to which the rotational driving force is applied from the fitting shaft portion 54a of the output shaft 54 in the rotation axis direction is only the thickness of the output plate 53. . On the other hand, the length of the engagement surface 28b in the direction of the rotation axis is formed to be several times the thickness of the metal plate material obtained by stamping the output plate 15.

As shown in FIGS. 4 and 5, on the outer peripheral portion of the output plate 15, three engaging projections 29 projecting downward in the axial direction with respect to the central axis are formed by bending. ing. The engagement projections 29 are provided at equal angular intervals,
It is formed so as to extend in a groove shape in the radial direction with respect to the center axis and to open at the outermost peripheral side. Each engagement protrusion 29 is
The rubber damper 14 is formed so as to be able to engage with the damper portion 25 in the circumferential direction with respect to the center axis thereof. The engaging projection 29 and the bent portion 27b are formed in the same direction with respect to the output plate 15. Therefore, when the engaging projection 29 and the bent portion 27b are formed by press working, they can be formed by pressing in the same direction.

On the lower surface of the output plate 15, a ridge 30 extending along a circle centered on the central axis is formed. Then, the output plate 15 is arranged in the opening of the damper accommodating portion 22 in a state in which the ridge portion 30 is in contact with the upper surface of each damper portion 25, as shown in FIG. Output plate 15
Are accommodated in the damper accommodating portion 22 in a state where the respective engaging projections 29 are fitted in gaps between the two damper portions 25 accommodated in the respective chambers of the damper accommodating portion 22. At this time, the lower part of the shaft fitting portion 28 is disposed in the concave portion 18a of the bearing portion 18.

As shown in FIG. 1, the output shaft 16 has, at the upper end of a shaft portion 31, a fitting shaft portion 32 having a substantially cross-sectional shape (a flat cross-section perpendicular to the rotation axis). As shown in FIG. 4, the fitting shaft portion 32 is provided on the shaft fitting portion 28 of the output plate 15.
Is formed so as to fit into the shaft fitting hole 28a. The fitting shaft portion 32 includes an engagement surface 32a for transmitting a rotational driving force to the output plate 15. The engaging surface 32a is formed so as to contact the entire surface of the engaging surface 28b of the shaft fitting hole 28a. Further, the output shaft 16 includes a gear portion 33 which meshes with a gear portion of a drive member, which is a component of a window regulator (not shown), below the shaft portion 31.

As shown in FIG. 2, the output shaft 16 has a shaft portion 31 rotatably supported by a shaft hole 18b of the bearing portion 18, and a fitting shaft portion 32 having a shaft fitting portion 28 fitted into the shaft fitting portion 28. Hole 2
8a is inserted and fitted from the bent portion 27b side. In this case, since the corners of the bent portion 27b are rounded when being bent, the opening of the shaft fitting hole 28a on the bent portion 27b side is slightly widened, and the fitting shaft portion 32 is inserted into the shaft fitting hole 28a. Easy to insert. At this time, each of the engagement surfaces 32 of the fitting shaft portion 32 is
a contacts the entire surface of each engagement surface 28b of the shaft fitting hole 28a. Since the shaft fitting hole 28a and the fitting shaft portion 32 that are fitted to each other have a substantially cross shape, the four engagement surfaces 28b and 32a abut on one side in the circumferential direction, and the output plate 15 A driving force (rotational force) is transmitted to the shaft 16. Therefore, the driving force (rotational force) can be reliably transmitted from the output plate 15 to the output shaft 16, and the concentration of stress can be reduced.

The output shaft 16 is formed by engaging an E-ring 34 with a circumferential groove 32b provided at an upper end of a fitting shaft portion 32 protruding upward from a distal end portion 28c of the shaft fitting portion 28. It is fixed so as not to fall out of the fitting portion 28 and the shaft hole 18b. The shaft 31 of the output shaft 16 has the shaft 31 and the shaft hole 1.
An O-ring 35 for hermetically sealing the space 8b is mounted.

The lid 17 is fixed to the gear 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 rotation of the output shaft 16 is restricted via the window regulator. At this time, since the motor body 10 is still rotating, the shaft fitting hole 28a of the shaft fitting portion 28 of the output plate 15 is formed.
In contrast, the circumferential force applied from the fitting shaft portion 32 of the output shaft 16 sharply increases.

At this time, the shaft fitting hole 28a in which the fitting shaft portion 32 of the output shaft 16 is fitted is formed longer in the direction of the rotation axis than the thickness of the metal plate material obtained by stamping the output plate 15. The force applied to the shaft fitting holes 2a by the forces applied from the respective engaging surfaces 32a of the fitting shaft portion 32 to the respective engaging surfaces 28b of the shaft fitting holes 28a.
The concentration of the stress generated near 8a is reduced. The operation and effects of the present embodiment described in detail above are listed.

(1) In the present embodiment, the output plate 15 is formed with a shaft fitting portion 28 having a shaft fitting hole 28a which is longer in the rotation axis direction than the thickness of the metal plate material obtained by stamping the output plate 15. The fitting shaft portion 32 provided on the output shaft 16 was fitted into the shaft fitting hole 28a. Therefore, the concentration of the stress generated near the shaft fitting hole 28a due to the force applied from each engaging surface 32a of the fitting shaft portion 32 to each engaging surface 28b of the shaft fitting hole 28a is alleviated. Even if the plate thickness of No. 15 remains the same, the shaft fitting portion 28 becomes more difficult to deform. As a result, the output shaft 16 can be formed by punching from a metal plate having the same thickness or a smaller thickness as that of the related art.
Rattling between the shaft fitting portion 28 and the shaft fitting portion 28 can be suppressed.

(2) In addition, in this embodiment, the shaft fitting portion 28 is formed so that its length range L in the direction of the rotation axis includes the thickness range D of the output plate 15. Therefore, the size of the center portion of the output plate 15 in the direction of the rotation axis is the shaft fitting portion 2.
Since the size of the output plate 15 is sufficient, the center of the output plate 15 does not protrude much upward. As a result, the size of the motor device 1 in the direction of the rotation axis can be prevented from increasing as much as possible.

(3) In addition, in this embodiment, the output plate 1
5, an engaging projection 29 projecting in the direction of the rotation axis and capable of engaging the damper portion 25 of the rubber damper in the circumferential direction.
Was formed by die bending. Accordingly, the output plate 15 cannot have a cutout portion like the conventional output plate 53.
The damper portion 25 to which the driving force is applied from the engagement convex portion 29 does not enter the cutout portion and does not bend toward the output plate 15. For this reason, since each damper part 25 is elastically deformed only in the circumferential direction with respect to the rotation axis, an excessive rotation driving force can be more reliably absorbed. As a result, when the rotation of the output shaft 16 is restricted, excessive force is reliably prevented from being applied to the gear portion 20 of the worm wheel 13 and the gear portion 20 is prevented.
Can be more reliably prevented.

(4) In addition, in the present embodiment, a concave portion 18a is formed in the upper end surface of the bearing portion 18 that rotatably supports the worm wheel 13 and the output shaft 16 on the same rotation axis, and is fixed to the output shaft 16. The lower part of the shaft fitting portion 28 of the output plate 15 was disposed in the recess 18a. Therefore, the worm wheel 13 and the output plate 15 are supported in a state of being partially overlapped with each other in the rotation axis direction at the upper end portion of the output shaft 16, so that the worm wheel 13 and the output plate 15 are within a narrower range on the rotation axis. Be placed. As a result, the worm wheel 1
3 and the output shaft 16, while reducing the thickness of the worm wheel 13 in the direction of the rotation axis, while increasing the length of the worm wheel 13 in the longer bearing portion 1.
8 to stabilize the rotation.
Hereinafter, embodiments of the invention other than the above-described embodiment will be listed.

In the above embodiment, the shaft fitting portion 28 is
The output plate 15 is formed on the output plate 15 such that the distal end portion 28c is on the opposite side to the engagement convex portion 29.
And may be formed on the same side as.

In the above embodiment, both the shaft fitting hole 28a and the fitting shaft portion 32 are formed in a substantially cross shape, but the shapes are not limited to this. For example, the fitting shaft 3
2, a D-shaped cross section in which a part of a cylinder is chamfered in a planar shape, a two-plane width shape in which a cylinder is chamfered in a pair of parallel planes,
It may be formed in a substantially Y-shape or the like extending in three directions in the radial direction at equal intervals in the circumferential direction. That is, the shaft fitting hole 28a and the fitting shaft portion 32
May be formed in a shape that engages in the circumferential direction. Driving force (rotational force) can be reliably transmitted from the output plate 15 to the output shaft 16. Further, if the output plate 15 and the output shaft 16 are securely engaged with each other in the circumferential direction by forming a shape having three or more engagement surfaces in one of the circumferential directions as in the above-described embodiment, the output plate The driving force (rotational force) can be reliably transmitted from the output shaft 15 to the output shaft 16, and the concentration of stress can be sufficiently reduced. The shaft fitting portion 28 (shaft fitting hole 2)
8a) is formed by plastic working, the shaft fitting hole 2
If 8a is a polygonal shape having three or more engagement surfaces at equal intervals in the circumferential direction, the thickness of the shaft fitting portion 28 can be stabilized.

In the above-described embodiment, in order to form the shaft fitting portion 28, the central portion of the output plate 15 is once protruded upward into a bottomed cylindrical shape by press drawing, and then the periphery of the cylindrical portion is formed. The part is again projected downward by press drawing. Then, the shaft fitting portion 28 having the shaft fitting hole 28a was formed by performing press drawing and punching on the cylindrical portion again. This may be formed by press drawing so that the center of the output plate 15 projects only upward or downward. Also in this case, since the shaft fitting hole longer than the plate thickness of the metal member can be formed, the output plate 1
It is possible to prevent rattling at the connecting portion between the output shaft 16 and the output plate 15 without forming the 5 from a thicker metal plate material.

In the above embodiment, the engagement projection 29 is
It was formed so as to extend in a groove shape in the radial direction with respect to the rotation axis by die bending, and to open at the outermost peripheral side. This may be formed by press drawing so as to extend only in a groove shape in the radial direction and not to open on the outermost peripheral side.

In the above embodiment, the rubber damper 14 made of rubber is used, but a damper made of an elastic material other than rubber may be used. Further, the shape of the damper 14 is not limited to this.

In the above embodiment, the present invention is applied to the motor device 1 of the power window device for a vehicle. However, the present invention may be applied to a motor device such as a power door opening / closing device and a power roof opening / closing device for a vehicle.

Hereinafter, the technical ideas grasped from each of the above embodiments will be described together with their effects. (1) A vehicle power window device provided with the motor device according to any one of claims 1 to 7. According to such a configuration, the motor device of the power window device for a vehicle has the effects of the inventions described in the respective claims.

(2) A rotary drive in which a driving force output plate formed by punching a metal plate material and a driving force output shaft arranged on the same rotation axis as the driving force output plate are connected so as to be integrally rotatable. In the force transmission structure, a bent portion (2) that is bent at one end in the axial direction at the center thereof.
7b) and a shaft fitting portion bent from the inside of the bent portion (27b) to the other side in the axial direction and provided with a fitting hole longer in the rotation axis direction than the thickness of the metal plate material. The driving force output plate is formed by forming a fitting shaft portion that is formed on the output plate and fitted into the fitting hole on the driving force output shaft, and the fitting shaft portion is fitted into the shaft fitting hole. And a driving force transmission shaft, wherein the driving force output shaft and the driving force output shaft are integrally rotatably connected to each other. According to such a configuration, it is possible to perform the punching process from the same metal plate material as that of the related art, and it is possible to make the connection portion with the driving force output shaft less likely to rattle.

(3) In the invention described in the above (2), the shaft fitting portion is formed so as to include a thickness range of the driving force output plate within a length range in the rotation axis direction. Transmission structure of rotational driving force. According to such a configuration, the size of the central portion of the driving force output plate in the direction of the rotation axis is the same as the size of the shaft fitting portion, so that the size of the central portion of the driving force output plate in the direction of the rotation axis is sufficient. Is not increased as much as possible.

(4) In the invention described in the above (3), the driving force transmitting member disposed on the rotation axis and the driving force transmitting member and the driving force output plate are disposed between the driving force transmitting member and the driving force output plate. An elastic body interposed so as to be engaged in the circumferential direction and transmitting a rotational driving force between the driving force transmitting body and the driving force output plate, and an outer peripheral portion of the driving force output plate A rotation driving force, wherein an engagement protrusion is formed integrally with the elastic body so as to be able to engage with the rotation axis in a circumferential direction thereof. Transmission structure. According to such a configuration, since the elastic body is elastically deformed only in the circumferential direction with respect to the rotation axis by the rotational driving force, excessive force applied in the circumferential direction can be more reliably absorbed.

(5) In the invention described in the above (4), the driving force output shaft is rotatably supported by a shaft hole of a bearing portion on which the driving force transmitting body is rotatably supported. A rotary drive force transmission structure, wherein the output plate has a shaft fitting portion and a part of a bent portion housed in a concave portion provided on an end surface of the bearing portion. According to such a configuration, the driving force transmission body and the driving force output plate are arranged within a narrower range on the rotation axis, so that the driving force transmission structure in the rotation axis direction can be prevented from being as large as possible. .

[0056]

As described in detail above, according to the present invention,
Even if the thickness of the metal plate to be punched remains the same as before, the shaft fitting hole is unlikely to be deformed by the transmitted rotational driving force. It is possible to prevent rattling at the connecting portion with the driving force output shaft for transmitting the force.

[Brief description of the drawings]

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

FIG. 2 is a schematic cross-sectional view on a plane including a rotation axis of a transmission mechanism.

3A is a plan view of an output plate, and FIG. 3B is a cross-sectional view taken along line AA in FIG.

FIG. 4 is a perspective view from above of an output plate to which an output shaft is fixed.

FIG. 5 is a perspective view of the output plate from below.

FIG. 6 is an exploded perspective view showing a conventional motor device.

FIG. 7 is a schematic cross-sectional view on a plane including a rotation axis of the transmission mechanism.

FIG. 8 is a perspective view from above of an output plate to which an output shaft is fixed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Motor device, 10 ... Motor main body, 13 ... Warm wheel as driving force transmission body, 14 ... Rubber damper as elastic body, 15 ... Output plate as driving force output plate, 16 ...
An output shaft as a driving force output shaft, 18 ... bearing part, 18a ...
Recessed part, 18b: shaft hole, 27b: bent part, 28: shaft fitting part, 28a: shaft fitting hole, 28b: engaging surface, 29: engaging convex part, 32: fitting shaft part, D: plate Thickness range, L ... Length range.

Claims (8)

[Claims] 1. A motor body (10), a driving force transmitting body (13) to which a rotational driving force of the motor body (10) is transmitted, and a circumferentially engaging member with respect to the driving force transmitting body (13). An elastic body (14), which is interposed so as to be engaged with and transmits the rotational driving force of the driving force transmitting body (13); and a metal plate material, and the rotational driving force of the motor body (10) is the driving force. Transmission body (13) and elastic body (14)
A driving force output plate (15) transmitted through the driving force output plate (15), and a drive arranged on the same rotation axis as the driving force output plate (15) and fixed to the driving force output plate (15) so as to be integrally rotatable therewith. In the motor device provided with a force output shaft (16), the driving force output plate (15) has a bent portion (27b) that is bent in one direction in the axial direction at the center thereof, and the bent portion (27b). And a shaft fitting portion (28) having a shaft fitting hole (28a) which is bent in the rotation axis direction from the inner side of the metal plate in the rotation axis direction than the thickness of the metal plate material. The output shaft (16) has the shaft fitting hole (28).
a) a fitting shaft portion (32) to be fitted is formed, and the driving force output plate (15) and the drive force output plate (15) are fitted by fitting the fitting shaft portion (32) into the shaft fitting hole (28a). A motor device, wherein the motor device is connected to a driving force output shaft (16) so as to be integrally rotatable. 2. The shaft fitting portion (28) is formed so as to include the thickness range (D) of the driving force output plate (15) within its length range (L) in the rotation axis direction. The motor device according to claim 1, wherein: 3. A bent portion (2) of the driving force output plate (15).
3. The motor device according to claim 1, wherein 7b) is provided on a side into which the driving force output shaft (16) is inserted. 4. 4. The shaft fitting hole (28a) has three or more engagement surfaces (28b) in one of the circumferential direction with the driving force output shaft (16). Item 1
4. The motor device according to claim 3. 5. An outer peripheral portion of the driving force output plate (15) is formed so as to protrude in the rotation axis direction, and engages with the elastic body (14) in the circumferential direction with respect to the rotation axis. 5. The motor device according to claim 1, wherein the possible engagement projections are formed integrally. 6. 6. The engaging projection (29) and the bent part (2).
The motor device according to claim 5, wherein 7b) is formed in the same direction with respect to the driving force output plate (15). 7. The driving force output shaft (16) includes a bearing portion (1) on which the driving force transmission body (13) is rotatably supported.
8) The driving force output plate (15) is rotatably supported by the shaft hole (18b), and the shaft fitting portion (32) and a part of the bent portion (27b) are partially connected to the bearing portion (18). The motor device according to any one of claims 1 to 6, wherein the motor device is accommodated in a concave portion (18a) provided on an end surface of the motor device. 8. A rotary driving force output plate formed of a metal plate material and having a shaft fitting hole (28a) formed therein for fitting a driving force output shaft (16) arranged on a rotation axis thereof, At the center thereof, a bent portion (27b) bent in one direction in the axial direction, and bent from the inside of the bent portion (27b) in the other direction in the axial direction, and longer in the rotation axis direction than the thickness of the metal plate material. A rotary driving force output plate, wherein a shaft fitting portion (28) having a shaft fitting hole (28a) is formed.