JP2001337009A - Operation inspection method for clutch installed in motor with deceleration mechanism and motor with deceleration mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation inspection method for clutch installed in a motor with a deceleration mechanism capable of reducing inspection cost. SOLUTION: A connection projection 23c which is rotatably connected with an inspection jig 51 (connection pin 54) is placed on a worm shaft 23 and holes 21d and 21e for inserting the connection pin 54 from outside are placed in the deceleration housing 32. The connection pin 54 is inserted in the holes 21d and 21e to connect the pin and the worm shaft 23 and by applying a specific torque from the pin 54 to the worm shaft 23, the lock operation of the clutch is inspected. That is, the lock operation inspection of the clutch is performed by directly operating the torque to the front step of a worm wheel 24 i.e., worm shaft 23 in the input side of the deceleration mechanism, and so the inspection is possible with a small torque. Thus, stiffness of the inspection jig 51 need not be high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for testing the operation of a clutch incorporated in a motor with a speed reduction mechanism and a motor with a speed reduction mechanism.

[0002]

2. Description of the Related Art A power window device mounted on a vehicle is provided with a motor with a speed reduction mechanism as a driving source. Such a motor, for example, reduces the rotation of the rotating shaft by a motor body having a rotating shaft, a worm shaft that is drivingly connected to the rotating shaft, and a worm wheel that meshes with the worm shaft. And a deceleration unit for transmitting to the output shaft. Then, the torque of the output shaft is transmitted to the regulator, and the regulator operates so that the window glass moves up and down (opens and closes) by the torque.

In such a power window device, when a downward (opening) external force acts on the window glass when the motor is not driven, the external force is converted into a rotational force by the regulator, and the rotational force is converted into a rotational force. The force acts so as to rotate the rotation axis of the motor main body in reverse to the original. When such rotation transmission is established, the window glass is opened by an external force and may cause theft.

Therefore, in order to prevent this kind of rotation transmission, a motor provided with a clutch between the rotation shaft of the motor body and the worm shaft for preventing the rotation of the output shaft from being transmitted to the rotation shaft is known. Have been. In such a motor, while the rotation of the rotating shaft is transmitted to the output shaft by the clutch, when an external force (rotating force) acts on the output shaft, the output shaft is locked so that the rotating shaft is not rotated. .

[0005]

Before shipping the above-mentioned motor, it is necessary to check whether or not the assembled clutch operates normally. Therefore, the following method has been considered as an example of such an inspection method.

First, as a rotation force transmission test, power is supplied to a motor to rotate a rotation shaft, and it is checked whether the rotation force of the rotation shaft is normally transmitted to a worm shaft via a clutch. If normal, the output shaft rotates normally based on the rotation of the worm shaft.

Next, a lock operation inspection of the motor that has passed the inspection is performed. That is, a predetermined rotational force is applied to the output shaft in a state in which the driving of the motor is stopped, and it is examined whether or not the clutch locks the rotation of the output shaft (worm shaft) with the rotational force.

However, since the output shaft is on the output side of the reduction unit, a large rotational force is required to rotate the worm shaft from the output shaft side. Therefore, a large rotational force is required in the above-described lock operation inspection. Therefore, in an apparatus for performing such an inspection, it is necessary to have a high rigidity so as to generate a large rotational force, so that the apparatus becomes expensive. As a result, there has been a problem that the inspection cost is increased and the cost of the motor is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method of inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism, which can reduce the inspection cost, and a method thereof. An object of the present invention is to provide a motor with a speed reduction mechanism.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, the invention according to claim 1 is directed to a motor body having a rotating shaft, a worm shaft rotating based on the rotation of the rotating shaft, and the worm shaft. A speed reduction mechanism including a worm wheel meshed with the worm shaft is provided between the rotation shaft and the worm shaft, and a rotation is transmitted from the rotation shaft to the worm shaft. In a method of inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism having a clutch that locks rotation from the shaft side, a connecting portion for integrally rotating with an inspection jig is provided on the worm shaft. And the connecting portion,
The gist is that the locking operation of the clutch is inspected by applying a predetermined rotational force to the worm shaft from the inspection jig.

According to a second aspect of the present invention, in the method for inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to the first aspect, a hole for inserting the inspection jig from outside into the speed reduction housing is provided. The gist is that the inspection jig is inserted into the hole and the inspection jig is connected to the connection portion.

According to a third aspect of the present invention, in the method for inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism according to the first aspect, the lock operation inspection of the clutch includes assembling the motor body to the speed reduction portion. The gist is that the connection portion is provided on the base end side of the worm shaft on which the clutch is provided, and the inspection jig is connected to the connection portion from the side where the motor body is assembled. I do.

The invention described in claim 4 is the first to third aspects of the present invention.
In the method for inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to any one of the above, the inspection jig,
A connection pin that is connected to the connection portion so as to be integrally rotatable, and a support member that rotatably supports the connection pin so that a predetermined frictional force is generated in the rotational direction between the connection pin and the connection pin. The gist of the invention is to apply a predetermined rotational force from the connection pin to the worm shaft.

According to a fifth aspect of the present invention, in the method for inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to the fourth aspect, an urging member for urging the connecting pin to press against the supporting member. And adjusting the frictional force by changing the urging force of the urging member.

According to a sixth aspect of the present invention, a reduction mechanism including a motor body having a rotation shaft, a worm shaft rotating based on the rotation of the rotation shaft, and a worm wheel meshing with the worm shaft is provided in a reduction housing. A deceleration unit that is provided between the rotating shaft and the worm shaft and that transmits rotation from the rotating shaft to the worm shaft and that locks rotation from the worm shaft side; In a motor with a mechanism, a gist is provided on the worm shaft, the connecting portion being connected to an inspection jig for inspecting a locking operation of the clutch so as to be integrally rotatable.

According to a seventh aspect of the present invention, in the motor with the speed reduction mechanism according to the sixth aspect, a hole is provided in the speed reduction housing for inserting the inspection jig from outside.

According to an eighth aspect of the present invention, in the motor with a speed reduction mechanism according to the seventh aspect, the connecting portion is provided at a tip end of the worm shaft, and the hole is coaxial with the worm shaft. It is assumed that it is provided.

According to a ninth aspect of the present invention, in the motor with a speed reduction mechanism according to the eighth aspect, the hole has an outer diameter substantially equal to an inner diameter of a portion where the hole is disposed, and A thrust receiving material that receives a thrust load is inserted,
After insertion, the gist is that the elastic resin is injection molded.

According to a tenth aspect of the present invention, in the motor with a speed reducing mechanism according to the ninth aspect, the hole has a tapered surface formed so as to decrease in diameter toward the outer opening. I do.

According to an eleventh aspect of the present invention, in the motor with a speed reduction mechanism according to the sixth aspect, the clutch can be assembled to the speed reduction portion in a state where the motor body and the speed reduction portion are not assembled. The connecting portion is formed on a driven-side rotating body of the clutch, which is provided so as to rotate integrally with a base end side of the worm shaft.

The twelfth aspect of the present invention provides the twelfth aspect.
In the motor with a speed reduction mechanism according to any one of the first to third aspects, the connecting portion has a shape that engages with the inspection jig in a rotational direction.

Therefore, according to the first aspect of the present invention,
A connecting portion that is connected to the inspection jig so as to be integrally rotatable is provided on the worm shaft. Then, the inspection jig and the connecting portion are connected to each other, and the locking operation of the clutch is inspected by applying a predetermined rotational force to the worm shaft from the inspection jig. In other words, the inspection of the lock operation of the clutch is performed by applying a rotational force directly to the front stage of the worm wheel, that is, the worm shaft on the input side of the speed reduction mechanism. Therefore, it is not necessary to increase the rigidity of the inspection jig (apparatus), and the cost of the apparatus can be reduced. As a result, the inspection cost can be reduced, and the cost of the motor can be reduced.

According to the second aspect of the present invention, the speed reduction housing is provided with a hole for inserting an inspection jig from outside. Then, an inspection jig is inserted into the hole, the inspection jig is connected to the worm shaft, and the locking operation of the clutch is inspected by applying a predetermined rotational force to the worm shaft from the inspection jig.

According to the third aspect of the present invention, the connecting portion is provided on the base end side of the worm shaft on which the clutch is provided. Then, before assembling the motor body to the speed reduction portion, an inspection jig is connected to the connecting portion from the side where the motor body is assembled, and a predetermined rotational force is applied from the inspection jig to the worm shaft to check the clutch locking operation. Is done. Therefore, a defective clutch is detected earlier in the assembling process than when the inspection is performed after the motor main body is assembled to the speed reduction unit.

According to the fourth aspect of the present invention, the inspection jig includes the connecting pin that is connected to the connecting portion so as to be rotatable integrally with the connecting portion, and the connecting pin is configured to generate a predetermined frictional force in the rotational direction between the connecting pin. And a support member for rotatably supporting the pin. Then, by rotating the support member, a predetermined rotational force is applied from the connecting pin to the worm shaft. Therefore, the inspection jig can have a simple configuration.

According to the fifth aspect of the present invention, the inspection jig is provided with an urging member for urging the connecting pin to press against the supporting member. Then, the frictional force is adjusted by changing the urging force of the urging member. Therefore, it is possible to easily adjust the frictional force, that is, the rotational force.

According to the sixth aspect of the present invention, the worm shaft is provided with a connecting portion which is connected to an inspection jig for inspecting the locking operation of the clutch so as to be integrally rotatable. And
Inspection of the locking operation of the clutch is performed by connecting the inspection jig and the worm shaft and applying a predetermined rotational force to the worm shaft from the inspection jig. In other words, the inspection of the lock operation of the clutch can be performed by applying a rotational force directly to the front stage of the worm wheel, that is, the worm shaft on the input side of the reduction mechanism, so that the inspection can be performed with a small rotational force. Therefore, it is not necessary to increase the rigidity of the inspection jig (apparatus), and the cost of the apparatus can be reduced. As a result, the inspection cost can be reduced, and the cost of the motor can be reduced.

According to the seventh aspect of the present invention, the speed reduction housing is provided with a hole for inserting an inspection jig from outside. Then, an inspection jig is inserted into the hole, the inspection jig is connected to the worm shaft, and the locking operation of the clutch is inspected by applying a predetermined rotational force to the worm shaft from the inspection jig.

According to the eighth aspect of the invention, the connecting portion for connecting to the inspection jig is provided at the tip of the worm shaft, and the hole into which the jig is inserted is provided coaxially with the worm shaft. That is, the inspection jig is inserted along the axial direction of the worm shaft, and is connected to the connecting portion. Therefore, it is possible to easily connect the inspection jig and the worm shaft, and it is possible to easily apply a rotational force from the jig to the worm shaft.

According to the ninth aspect, the hole has:
A thrust receiving member having an outer diameter substantially equal to the inner diameter of the portion where the thrust load is received and receiving a thrust load of the worm shaft is inserted, and after the insertion, an elastic resin is injection-molded. Therefore, the hole can be easily filled, and water from the hole can be prevented. In addition, by adjusting the injection pressure, a predetermined thrust load can be applied to the worm shaft, and rattling of the worm shaft and the like in the thrust direction can be suppressed.

According to the tenth aspect of the present invention, the hole is
It has a tapered surface formed so that the diameter decreases toward the outer opening. Therefore, the elastic resin filled in the hole is pressed and deformed to the tapered surface by the reaction force from the thrust receiving member receiving the thrust load. Therefore, since the resin comes into close contact with the tapered surface, it is possible to reliably prevent water from entering from the hole.

According to the eleventh aspect of the present invention, the clutch is formed so that it can be assembled to the speed reduction portion in a state where the motor body and the speed reduction portion are not assembled, and the connection portion is provided on the base end side of the worm shaft. It is provided on a driven-side rotator of a clutch provided to rotate integrally. Therefore, the clutch can be assembled to the speed reducer in a state where the motor body is not assembled to the speed reducer, and the locking operation of the clutch can be inspected. As a result, a defective clutch is detected earlier in the assembling process than when the inspection is performed after the motor main body is assembled to the speed reduction unit.

According to the twelfth aspect of the present invention, since the connecting portion of the worm shaft is formed into a shape that engages with the inspection jig in the rotational direction, the worm shaft reliably secures a predetermined rotational force from the inspection jig. Can be received.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 6, the motor 1 of the power window device is fixed to the door 2. The motor 1 includes a motor body 3 as a drive source and a speed reduction unit 4 containing a speed reduction mechanism for reducing the rotation of the motor body 3. The forward / reverse rotation of the motor body 3 is controlled by a gear 5 a provided on the output shaft 5 of the reduction unit 4.
The gear 5a is meshed with a gear 6a provided in a known X-arm type regulator 6. The regulator 6 opens and closes (moves up and down) the window glass 7 based on the forward and reverse rotation of the gear 5a.

As shown in FIG. 1, the motor body 3 is
Yoke housing 11, a plurality of magnets 12, a rotating shaft 13, an armature core 14, a commutator 1
5, resin cover 16, brush 17, and bearings 18a, 18
b.

The yoke housing 11 is formed in a substantially flat cylindrical shape with a bottom, and a magnet 12 is fixed to an inner peripheral surface thereof. A bearing 18 is provided at the bottom of the yoke housing 11.
a, and the base end of the rotating shaft 13 is rotatably supported by the bearing 18a. The armature core 1 is provided at a position corresponding to the position of the magnet 12 on the rotating shaft 13.
4 is fixed. Further, a commutator 15 is fixed to the rotation shaft 13 at a more distal end side than the armature core 14. A fitting projection 13a (see FIG. 2) having a hexagonal R surface is formed at the tip of the rotating shaft 13. The fitting convex portion 13a having the hexagonal R surface has a shape that is non-rotatable and tiltable in a state of being fitted into a concave portion having a hexagonal cross section.

At the opening of the yoke housing 11,
The resin cover 16 is fixed. This resin cover 16
Is provided with a power supply section (connector) (not shown) projecting outside the yoke housing 11. Further, a brush 17 connected to a power supply unit by a wiring (not shown) is provided on the resin cover 16 inside the yoke housing 11. The resin cover 16 is provided with a bearing 18b, and the tip of the rotating shaft 13 is rotatably supported by the bearing 18b.

Here, the brush 17 is connected to the commutator 15
And is in sliding contact with the commutator 15. When a current is supplied from the external power source to the power supply unit, a current is supplied to the coil conductor wound around the armature core 14 via the brush 17 and the commutator 15, and the armature core 14, that is, the rotating shaft 13 of the motor body 3 Is rotated.

The reduction section 4 includes a reduction housing 21 and a bearing 2
2a, 22b, worm shaft 23, worm wheel 2
4. The output shaft 5 is provided. Reduction housing 21
Is made of resin and has an opening (upper end in FIG. 1)
The yoke housing 11 is fixed with the resin cover 16 therebetween.

On the opening (upper end in FIG. 1) of the speed reduction housing 21, a clutch housing recess 21a is formed. A worm shaft housing 21b is formed in the speed reduction housing 21 so as to extend from the bottom of the clutch housing recess 21a in the axial direction of the rotating shaft 13. or,
The reduction housing 21 is formed with a wheel housing 21c communicating with the worm shaft housing 21b in a direction perpendicular to the axis of the worm shaft housing 21b (rightward in FIG. 1).

The worm shaft housing 21b has bearings 22a,
22b is fixed at a predetermined position, and the bearings 22a and 22b rotatably support the worm shaft 23. A worm 23a is formed between the bearings 22a and 22b of the worm shaft 23, and is rotatably supported at both ends by the bearings 22a and 22b and is housed in the worm shaft housing 21b. At the end of the worm shaft 23 on the motor body 3 side (the upper end in FIG. 1), an engagement recess 23b having a substantially square cross section is formed. Further, a connecting projection 23c having a square cross section is formed at the tip of the worm shaft 23 (the lower end in FIG. 1). The connecting projection 23c is provided with a clutch 3 described later.
It is provided so as to be integrally rotatable with the connection pin 54 of the inspection jig 51 for performing the operation inspection of No. 0.

At the tip (lower end in FIG. 1) of the worm shaft receiving portion 21b, a thrust receiving receiving hole 21d and a communication hole 21e for communicating the hole 21d with the outside are provided with a worm shaft receiving portion 21b. (The worm shaft 23).

The thrust receiving hole 21d receives the thrust load of the worm shaft 23 by the ball 25 contacting the tip end surface of the shaft 23 (the connecting projection 23c) and the thrust receiving member 26 contacting the ball 25. Is housed. The thrust receiving member 26 has a thrust receiving accommodation hole 21d.
And has a cylindrical shape with a bottom having substantially the same outer diameter as the inner diameter of the ball. The ball 25 and the thrust receiving member 26 are inserted from the communication hole 21e after an operation test of the clutch 30 described later.

The communication hole 21e is provided in the thrust receiving accommodation hole 21.
The d side is formed to have a larger diameter than the accommodation hole 21d, and is formed so as to gradually decrease in diameter from the accommodation hole 21d toward the outside opening (front end opening) until the diameter becomes the same as the accommodation hole 21d. That is, the communication hole 21e has an inner peripheral surface that is tapered toward the distal end in the axial direction, and the inner peripheral surface is a tapered surface 21f.

After inserting the ball 25 and the thrust receiving member 26 into the thrust receiving hole 21d, a resin having an elastic force, for example, an elastomer resin 27, is placed in the communication hole 21e and a part of the thrust receiving hole 21d. It is formed by injection molding and receives the thrust load of the thrust receiving member 26. At this time, the elastomer resin 27
The worm shaft 23, the rotating shaft 13, and a worm shaft 23 via a ball 25 and a thrust receiving member 26 for preventing the backlash in the axial direction of the clutch 30 described later.
Injection molding is performed until a predetermined injection pressure is reached so that a desired thrust load acts on the substrate. Since the thrust receiving member 26 has substantially the same outer diameter as the inner diameter of the thrust receiving receiving hole 21d, the elastomer resin 27 is prevented from flowing into the worm shaft receiving portion 21b.

The molded elastomer resin 27 is pressed against the tapered surface 21f of the communication hole 21e and elastically deformed by the reaction force from the thrust receiving member 26 receiving the thrust load. Accordingly, the resin 27 comes into close contact with the tapered surface 21f, and water from flowing into the motor 1 from the communication hole 21e is reliably prevented.

A worm wheel 24 is accommodated in the wheel accommodating portion 21c. The worm wheel 24 is meshed with the worm 23a of the worm shaft 23, and has an axial center in a direction perpendicular to the worm shaft 23 (a direction perpendicular to the plane of FIG. 1). It is rotatably supported. The worm wheel 24 and the worm shaft 23 constitute a speed reduction mechanism. The output shaft 5 that matches the axis of the worm wheel 24 is connected to the worm wheel 24 so as to rotate integrally.

The clutch housing recess 21a has a clutch 30
The clutch 30 is interposed between the rotating shaft 13 extending from the motor body 3 and the worm shaft 23.

As shown in FIGS. 2 to 5, the clutch 30 includes an outer ring 31, a driven side rotating body 32, and a driving side rotating body 3
3, a retainer 34, three steel balls 35,
A circlip 36 is provided.

The outer race 31 is formed in a substantially cylindrical shape, and is press-fitted and fixed so as to be in contact with the bottom surface (the lower end surface in FIG. 1) of the clutch housing recess 21a. The driven-side rotator 32 is disposed inside the outer race 31, and has a disk portion 32 a and a disk portion 32.
a cylindrical portion 3 protruding upward (upward in FIG. 5) from the center of “a”
2b, and a fitting portion 32c having a substantially rectangular cross section projecting downward from the center of the disk portion 32a. The fitting portion 32c is fitted into the engaging recess 23b of the worm shaft 23, and connects the driven-side rotating body 32 and the worm shaft 23 so as to be integrally rotatable.

As shown in FIGS. 2 and 3, a predetermined angle range is cut out from the outer peripheral side of the disc portion 32a so that the engaging groove 3a is formed.
A plurality (three) are formed at equal angle (120 °) intervals. Further, a control surface 38 is formed in the disk portion 32a by linearly cutting the outer periphery between the adjacent engagement grooves 37. The radial distance between the control surface 38 and the inner peripheral surface 31 a of the outer ring 31 changes in the rotation direction.

The driving-side rotator 33 has a cylindrical portion 33a and an annular disk portion 33b extending radially outward from the lower end (the lower end in FIG. 5) of the cylindrical portion 33a. Cylindrical part 3
A small diameter portion 33c having a reduced inner diameter is formed on the upper end side of 3a. A fitting recess 33d having a hexagonal cross section is formed at the upper end of the cylindrical portion 33a and is recessed in the axial direction and communicates with the inside of the lower end of the cylindrical portion 33a through the inside of the small diameter portion 33c.

A plurality (three) of lower engaging projections 39 protruding downward are formed at equal angular (120 °) intervals on the outer peripheral end of the disk portion 33b. The circumferential width of the lower engaging projection 39 is set to a predetermined length shorter than the circumferential length of the engaging groove 37 (see FIG. 3). In addition, disk part 3
3b, an upper engaging projection 40 projecting upward
Are formed at equal angle (120 °) intervals (three). Note that the lower engagement protrusion 39 and the upper engagement protrusion 40 of the present embodiment are arranged with a shift of 60 °.

The cylindrical portion 32b of the driven side rotating body 32
Is inserted into the cylindrical portion 33 a of the driving-side rotator 33, and the lower engagement projection 39 of the driving-side rotator 33 is inserted into the engagement groove 37 of the driven-side rotator 32. Here, since the circumferential width of the lower engagement protrusion 39 is shorter than the circumferential length of the engagement groove 37, the drive-side rotating body 33 is within a predetermined range with respect to the driven-side rotating body 32. It is rotatable by the gap in the circumferential direction of the engagement groove 37).

The retainer 34 has a small-diameter cylindrical portion 34a having an inner diameter substantially equal to the outer diameter of the cylindrical portion 33a, and an annular disk portion extending radially outward from the lower end (lower end in FIG. 5) of the small-diameter cylindrical portion 34a. 34b, and a large-diameter cylindrical portion 34c extending downward from the outer edge of the disk portion 34b. The inner diameter of the large-diameter cylindrical portion 34c is set to be larger than the outer diameters of the disk portion 32a and the disk portion 33b.

A plurality of (three) engaging holes 41 penetrating in the axial direction are formed in the disk portion 34b at equal angular (120 °) intervals. The circumferential length of the engaging hole 41 is set to a predetermined length longer than the circumferential width of the upper engaging projection 40 (see FIG. 3).

A plurality of (three) ball holding holes 42 penetrating in the radial direction are formed at equal angular (120 °) intervals in the large-diameter cylindrical portion 34c.
Is formed. Then, with the steel ball 35 fitted in each ball holding hole 42 from the radial direction, the cylindrical portion 33a is fitted into the small-diameter tubular portion 34a, and the upper engaging projection 40 is fitted into the engaging hole 41. Have been. Each of the steel balls 35 is disposed between the inner peripheral surface 31 a of the outer race 31 and the control surface 38 of the driven-side rotator 32. The circlip 36 is fitted on the upper end side of the cylindrical portion 33a to prevent the small-diameter cylindrical portion 34a from coming off. Here, the engagement hole 41 has a circumferential length of:
Since the width is longer than the circumferential width of the upper engagement projection 40, the retainer 34 is rotatable within a predetermined range (a gap between the engagement hole 41 and the projection 40) with respect to the driving-side rotating body 33.

A ball 43 is inserted into the small-diameter portion 33c of the driving-side rotator 33 so as to abut against the tip of the cylindrical portion 32b of the driven-side rotator 32.
The three fitting projections 13a are fitted. This fitting projection 1
3a has a hexagonal R surface, so that the driving side rotating body 33
Are not rotatable and tiltable with respect to the rotation shaft 13.

In the clutch 30 having such a configuration, the driving-side rotating body 33 (only the lower and upper engaging projections 39 and 40 are shown in FIG. 3) in the direction of the arrow A in FIG. When rotated clockwise, the engagement groove 3
7 is pressed against one side surface (counterclockwise surface) of the lower engagement projection 39. or,
At this time, one side surface (counterclockwise surface) of the engagement hole 41 contacts one side surface (counterclockwise surface) of the upper engagement protrusion 40 and is pressed.

Conversely, when the driving-side rotating body 33 rotates clockwise with the rotation of the rotating shaft 13, the other side surface (clockwise side) of the engagement groove 37 becomes the other side surface (clockwise side) of the lower engagement protrusion 39. (Clockwise surface). At this time, the other side surface (clockwise surface) of the engagement hole 41 contacts the other side surface (clockwise surface) of the upper engagement protrusion 40 and is pressed.

Therefore, at these times, the driven side rotating body 32
Is a predetermined rotation angle with respect to the driving-side rotator 33, and the retainer 34 is a predetermined rotation angle with respect to the driving-side rotator 33. That is, the retainer 34 is set at a predetermined rotation angle with respect to the driven-side rotator 32, and the steel ball 35 is
Are arranged at positions corresponding to the substantially central portion of. Therefore, the rotation of the driven-side rotator 32 is not prevented, and the driven-side rotator 32 rotates together with the drive-side rotator 33.

Accordingly, in such a clutch 30, when the rotating shaft 13 of the motor main body 3 is rotated, the driven-side rotating body 32 rotates together with the driving-side rotating body 33, and the rotational force is transmitted to the worm shaft 23. I do. Therefore, the rotational force of the worm shaft 23 is transmitted to the regulator 6 via the worm wheel 24 and the output shaft 5, and the window glass 7 is opened and closed by the regulator 6.

On the other hand, when the driven rotator 32 rotates in the direction of arrow A (counterclockwise) together with the worm shaft 23 as shown in FIG. 4, the steel ball 35 relatively moves toward the end of the control surface 38. . The other side surface (clockwise surface) of the engagement groove 37 contacts the other side surface (clockwise surface) of the lower engagement protrusion 39, and one side surface (counterclockwise) of the upper engagement protrusion 40. Before the rotation of the driven-side rotating body 32 is transmitted to the retainer 34 via the driving-side rotating body 33, the steel The ball 35 is sandwiched between the control surface 38 and the inner peripheral surface 31a of the outer race 31 (locked).

Conversely, when the driven-side rotator 32 rotates clockwise, the steel ball 35 is similarly placed on the control surface 3.
8 before the rotation of the driven-side rotator 32 is transmitted to the retainer 34 via the drive-side rotator 33, the steel ball 35 is moved to the control surface 38 and the inner peripheral surface 31 of the outer ring 31.
a. Since the outer ring 31 is fixed to the reduction section 4 (the clutch receiving recess 21a), the driven-side rotating body 3
2 is prevented from rotating further, and the drive-side rotator 33 does not rotate.

Therefore, in such a clutch 30, when the motor body 3 is not driven and an external force acts on the window glass 7 in the opening (down) direction and a rotational force acts on the output shaft 5, the clutch 30 is driven. The side rotator 32 is locked. Therefore, the output shaft 5 is also in the locked state, and the operation of the window glass 7 in the further opening direction is prevented.

Next, an operation test of the clutch 30 provided in the motor 1 will be described. For this operation inspection, an inspection jig 51 as shown in FIG. 7 is used. The inspection jig 51 includes a spindle 52, a guide 53, a connecting pin 54, a spring 55, and the like.

The spindle 52 has an accommodation recess 52a having a circular cross section extending in the axial direction on its end face.
A guide 53 is fastened by a plurality of screws 56 so as to cover 2a. The guide 53 includes a cylindrical storage tube portion 53a coaxially communicating with the storage recess 52a. A step 53b bent inward in the radial direction is formed at the end of the storage cylinder 53a opposite the spindle, and the step 5
3b has a planar contact surface 53c facing the spindle side. A cylindrical support cylinder 53d extending in the axial direction is formed on the inner periphery of the step 53b.

A connecting pin 54 is rotatably supported by the support cylinder 53d. The connecting pin 54 includes a flange 54a that engages with the step 53b to prevent the connecting pin 54 from coming off. This flange 54a
Is a planar contact surface 54b that contacts the contact surface 53c.
have. The distal end of the connecting pin 54 has a diameter that can be inserted into the communication hole 21e and the thrust receiving hole 21d of the motor 1, and the distal end thereof has the worm shaft 2
A connection recess 54c is formed to be connected to the third connection protrusion 23c so as to be integrally rotatable.

A spring 55 is interposed between the flange 54a of the connecting pin 54 and the bottom of the recess 52a. The spring 55 urges the flange portion 54a so as to press the step portion 53b. The biasing force of the spring 55 is applied to the mutual contact surfaces 53c of the step 53b and the flange 54a.
A predetermined frictional force is generated between the guides 53b, that is, when the guide 53 and the connection pin 54 act on the guide 53 and the connection pin 54 more than a predetermined rotation force, the guide 53 and the connection pin 54 rotate relatively against the frictional force. Is set to Although not shown, the inspection jig 51 is provided with a detection element for detecting the rotation of the connection pin 54, and the element outputs a detection signal based on the detection to the outside.

[Operation Inspection of Clutch 30] In this test, power is supplied to the motor 1 assembled with components other than the ball 25 and the thrust receiving member 26, and whether or not the output shaft 5 has rotated normally based on the driving of the motor main body 3 is checked. That is, in the clutch 30, the driving-side rotating body 33
It is checked whether or not the rotational force is transmitted to the driven-side rotating body 32. If the output shaft 5 rotates normally, the motor 1 passes.

2. Lock operation inspection In this inspection, the motor 1 that passed the torque transmission inspection was
Perform a lock operation test. That is, the communication hole 21 of the motor 1
e, and the connecting pin 54 of the inspection jig 51 having the above-described configuration is inserted into the thrust receiving receiving hole 21d.
4c and the connecting projection 23c of the worm shaft 23 are connected so as to be integrally rotatable.

In this state, the spindle 52 is rotated to apply a rotational force to the connecting pin 54 and the worm shaft 23. At this time, when the clutch 30 normally locks the rotation of the driven rotator 32, that is, the worm shaft 23, the rotation of the connecting pin 54 is also locked. A torque greater than the set value acts. Therefore, the guide 53, that is, the spindle 52,
It rotates against a predetermined frictional force between the step 53b and the flange 54a. Then, the relative rotation between the connecting pin 54 and the guide 53 is detected, and it is determined from the detection signal based on the detection that the locking operation of the clutch 30 is normal. Note that the spindle 52 is rotated in both directions, and the bidirectional rotation lock of the clutch 30 is checked.

On the other hand, when the spindle 52 is rotated and the clutch 30 does not normally lock the rotation of the driven rotator 32, that is, the worm shaft 23, the distance between the connecting pin 54 and the guide 53 is equal to or greater than the set value. Does not work. Therefore, the frictional force between the step 53b and the flange 54a causes the rotation of the spindle 52 and the connection pin 5
4 goes around. Then, the relative rotation between the connecting pin 54 and the guide 53 is detected, and it is determined that the locking operation of the clutch 30 is abnormal based on a detection signal based on the detection.

After the operation inspection of the clutch 30 is completed,
In the normal motor 1, the ball 25 and the thrust receiving member 26 are inserted into the thrust receiving hole 21d as shown in FIG.
Are inserted in this order. As described above, the communication hole 21e and a part of the thrust receiving housing hole 21d include:
An elastomer resin 27 is injection-molded until a predetermined injection pressure is applied so that a desired thrust load acts on the worm shaft 23 via the ball 25 and the thrust receiving member 26, and the worm shaft 23, the rotating shaft 13, and the clutch 30 Shaking in the direction is prevented. In addition, the elastomer resin 27 reliably prevents water from entering the motor 1 through the communication hole 21e.

As described above, according to the present embodiment,
It has the following effects. (1) In the present embodiment, the worm shaft 23 is provided with the connecting protrusion 23c that is connected to the connecting pin 54 of the inspection jig 51 for inspecting the locking operation of the clutch 30 so as to be integrally rotatable, and the connecting pin 54 is inserted from outside. Holes 21d and 21e for making
Is provided on the reduction housing 21. When the locking operation of the clutch 30 is inspected, the connecting pin 54 of the inspection jig 51 is inserted into the holes 21d and 21e to connect the pin 54 and the worm shaft 23. This is performed by applying a rotational force. In other words, the lock operation inspection of the clutch 30 is performed before the worm wheel 24, that is, the worm shaft 23 on the input side of the speed reduction mechanism.
The inspection can be performed with a small rotational force because the rotational force can be applied directly to the inspection. Therefore, it is not necessary to increase the rigidity of the inspection jig 51, and the cost of the jig 51 can be reduced. As a result, the inspection cost can be reduced, and the cost of the motor 1 can be reduced.

(2) In the inspection using the inspection jig 51, the locking operation of the clutch 30 is performed only by connecting the connecting pin 54 and the worm shaft 23 and applying a predetermined rotational force to the worm shaft 23 from the pin 54. Inspection can be performed. Therefore, the inspection using the inspection jig 51 can be performed easily and in a short time.

(3) The inspection jig 51 includes a connecting pin 54 connected to the worm shaft 23 so as to be integrally rotatable, and the pin 54
And a guide 53 that rotatably supports the pin 54 so that a predetermined frictional force is generated in the rotational direction between the guide 53 and the like. Therefore, the inspection jig 51 can have a simple configuration.

(4) The inspection jig 51 is provided with a spring 55 for urging the connecting pin 54 to press the guide 53 against the guide 53.
Then, by changing the urging force of the spring 55, the frictional force, that is, the rotational force applied to the worm shaft 23 is adjusted. Therefore, the adjustment of the rotational force can be easily performed.

(5) Connection convex portion 2 connected to inspection jig 51
3c is provided at the tip of the worm shaft 23, and the jig 51
Are inserted coaxially with the worm shaft 23. That is, the inspection jig 51 uses the worm shaft 2
3 and is connected to the connection protrusion 23c. Therefore, it is possible to easily connect the inspection jig 51 and the worm shaft 23, and it is possible to easily apply a rotational force from the jig 51 to the worm shaft 23.

(6) Each of the holes 21d and 21e has an outer diameter that is substantially the same as the inner diameter of the portion (hole 21d) in which the holes 21d and 21e are disposed, and receives the thrust load of the worm shaft 23.
6 is inserted, and after the insertion, an elastomer resin 2 having elasticity.
7 is injection molded. Therefore, the holes 21d and 21e can be easily filled, and water from the holes 21d and 21e can be prevented. In addition, by adjusting the injection pressure, a predetermined thrust load can be applied to the worm shaft 23, and rattling of the worm shaft 23 and the like in the thrust direction can be suppressed.

(7) The hole 21e has a tapered surface 21f formed so that the diameter decreases toward the outer opening. Therefore, the elastomer resin 2 filled in the hole 21e
7 is pressed and deformed to the tapered surface 21f by the reaction force from the thrust receiving member 26 receiving the thrust load. Therefore, the resin 27 comes into close contact with the tapered surface 21f, so that it is possible to reliably prevent water from entering from the hole 21e.

(8) Since the connecting projection 23c of the worm shaft 23 is formed in a shape (square section in cross section) that engages with the inspection jig 51 in the rotation direction, the worm shaft 23 is connected to the inspection jig 51.
, A predetermined rotational force can be reliably received.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The motor 61 of the present embodiment is fixed to the door 2 similarly to the motor 1 of the first embodiment (see FIG. 6). The motor 61 includes a motor main body 62 that is a driving source, and a speed reduction unit 63 that houses a speed reduction mechanism that reduces the rotation of the motor main body 62.

As shown in FIG. 9, the motor body 62
Are a yoke housing 64, a plurality of magnets 65, a rotating shaft 66, an armature core 67, a commutator 68, a resin cover 69, a brush 70, and a bearing 71.
It has.

The yoke housing 64 is formed in a substantially bottomed flat cylindrical shape. Then, two magnets 65 are fixed to the inner peripheral surface so as to face each other. A base end of the rotation shaft 66 is rotatably supported on the bottom of the yoke housing 64 along the center axis thereof. As shown in FIG. 10, a two-width convex portion 66a chamfered in parallel from a columnar shape is formed at the tip of the rotating shaft 66.

The armature core 67 is fixed to an intermediate portion of the rotating shaft 66 corresponding to the position of the magnet 65. Further, a commutator 68 is fixed to the rotation shaft 66 at a position more distal than the armature core 67.

At the opening of the yoke housing 64,
A flange 64a extending radially outward is formed, and two through holes 64b and 64c are formed in the flange 64a. A resin cover 69 is fitted and fixed to the opening of the yoke housing 64. The resin cover 69 corresponds to the opening of the yoke housing 64,
A main body 69a having a shape substantially covering the opening, and a flange 6
And a power supply section (connector) 69b protruding radially outward of the rotary shaft 66 from the position 4a. A pair of brushes 70 connected to the power supply portion 69b by wiring (not shown) are provided inside the yoke housing 64 of the main body portion 69a.
A bearing 71 is provided substantially at the center of the main body 69a, and the tip of the rotating shaft 66 is rotatably supported by the bearing 71.

Further, a concave portion 69d which is recessed from the speed reduction portion 63 side (the lower side in FIG. 1) is formed in a connecting portion 69c connecting the main body portion 69a of the resin cover 69 and the power supply portion 69b. The connecting portion 69c is provided with a through hole 69e penetrating from the bottom of the concave portion 69d at a position corresponding to the one through hole 64b.

A pair of first engaging projections 72, 7 are provided on the outside of the yoke housing 64 (on the side of the reduction section 63) of the main body 69a.
3 are provided. The first engaging projections 72 and 73 extend in parallel with the rotation shaft 66.

Here, the brush 70 is disposed at a position corresponding to the commutator 68 so that the commutator 6
8 is in contact. Therefore, when a current is supplied from a control device (external power supply) (not shown) connected to the power supply unit 69b to the coil conductor wound around the armature core 67 via the brush 70 and the commutator 68, the armature core 6
7, that is, the rotation shaft 66 of the motor main body 62 is driven to rotate.

The deceleration section 63 includes a deceleration housing 81, first and second bearings 82a and 82b, and a worm member 83.
, A worm wheel 84, and an output shaft 85.
An opening concave portion 81a is formed at the center of the upper end (upper end in FIG. 1) of the reduction housing 81. At the upper end of the reduction housing 81, a convex portion 81b is formed to be inserted into the concave portion 69d of the resin cover 69. The convex portion 81b has a through hole 69e of the resin cover 69 and the yoke housing 64.
Is formed with a fitting projection 81c fitted into one of the through holes 64b. Also, at the upper end of the reduction housing 81,
A fitting projection 81d that can be fitted into the other through hole 64c of the yoke housing 64 is formed. The reduction housing 81 is screwed to the yoke housing 64 with a screw (not shown) in a state where the fitting projections 81c and 81d are fitted into the through holes 64b and 64c of the yoke housing 64.

The deceleration housing 81 has an opening recess 81a.
The clutch housing recess 81e (FIG. 1)
0), and a worm shaft accommodating recess 81f is formed so as to extend from the center of the bottom of the clutch accommodating recess 81e along the axial direction of the rotating shaft 66. Further, the reduction housing 81 is formed with a wheel housing portion 81g communicating with the worm shaft housing recess 81f in a direction perpendicular to the axis of the worm shaft housing recess 81f (rightward in FIG. 9). A bearing housing recess 81h (see FIG. 10) is formed in the opening of the worm shaft housing recess 81f.

A pair of second engaging projections 86 and 87 are provided at the bottom of the opening recess 81a. The two second engaging projections 86 and 87 extend in parallel with the axial direction of the rotating shaft 66. The two second engaging projections 86 and 87 are formed in a substantially U-shape, and enclose and accommodate the first engaging projections 72 and 73, respectively.

The first and second bearings 82a and 82b are sliding bearings (metal bearings) made of metal and having a substantially cylindrical shape.
The first bearing 82a is fitted inside the bearing receiving recess 81h. The second bearing 82b is provided with a worm shaft housing recess 81f.
Is fitted in the bottom side (the lower side in FIG. 1).

The worm member 83 includes a worm shaft 88,
The driven rotator 89 is formed integrally with the worm shaft 88 on the motor body 62 side. The worm shaft 88 has a worm 88a formed at an intermediate portion thereof, and is rotatably supported by first and second bearings 82a and 82b at both ends thereof, and is housed in the worm shaft housing recess 81f.

The worm wheel 84 has a worm 88a.
The wheel housing 81 is rotatable about an axis in a direction perpendicular to the worm shaft 88 (a direction perpendicular to the plane of FIG. 1).
g. The worm wheel 84 and the worm shaft 88 constitute a speed reduction mechanism. The output shaft 85 is connected to the worm wheel 84 so as to rotate coaxially with the rotation of the worm wheel 84.

The rotating shaft 66 is connected to a worm shaft 88 via a clutch 91. As shown in FIG. 10, the clutch 91 includes a collar 92 and the driven-side rotating body 8.
9, a plurality of steel balls 93, a retainer 94,
A driving-side rotator 95 and a ball 96 are provided. still,
In the present embodiment, the members 89, 92 to 94 of the clutch 91 excluding the driving side rotating body 95 and the ball 96 constitute a lock portion.

The collar 92 is formed in a substantially cylindrical shape, and its base end is press-fitted and fixed to the clutch accommodating recess 81 e of the speed reduction housing 81. An annular disk portion 92a extending radially inward is formed at the tip of the collar 92. The inner diameter of the disk portion 92a is set to be larger than the maximum outer diameter of the driving-side rotating body 95.

In the driven-side rotating body 89, similarly to the driven-side rotating body 32 of the first embodiment, a predetermined angle range is cut out from the outer peripheral side and the engaging groove 89a is formed at an equal angle (120 °).
A plurality (three) are formed at intervals. Similarly to the driven-side rotating body 32 of the first embodiment, the driven-side rotating body 89 has a control surface 89b formed by linearly cutting the outer periphery between the adjacent engaging grooves 89a. Is formed.
The radial distance between the control surface 89b and the inner peripheral surface 92b of the collar 92 changes in the rotation direction. A drive hole 89c as a connecting portion recessed in the axial direction from a position eccentric from the shaft center is provided at an equal angle (120 °) interval on an end surface of the driven side rotary member 89 on the drive side rotary member 95 side. Three (only one is shown in FIG. 10) are formed.

The steel ball 93 is formed in a spherical shape.
Between the control surface 89b and the collar 92, the control surface 89
Two pieces are arranged in the axial direction for each b. The retainer 94 includes a cylindrical portion 94a formed in a substantially cylindrical shape having a smaller diameter than the collar 92, and an annular inner extension 94b extending radially inward from one end of the cylindrical portion 94a. Cylinder 94
a, ball holding holes 94c penetrating in the radial direction at equal angle (120 °) intervals are formed.
Are held in the ball holding holes 94c so that the distance between them is constant. The inner extension portion 94b has three insertion holes 94d extending in an arc shape inside the disk portion 92a of the collar 92 at equal angular intervals (between adjacent ball holding holes 94c). The inner diameter of the inner extension 94b is
Corresponding to the drive hole 89c formed in the first direction, the diameter is set to a size such that the drive hole 89c can be seen from the axial direction. The retainer 94 is held in the collar 92, with one end of the cylindrical portion 94 a abutting against the disk portion 92 a of the collar 92 to restrict the movement in the axial direction.

The driving-side rotator 95 includes a shaft portion 95a disposed coaxially with the driven-side rotator 89, an annular portion 95b extending radially outward from an intermediate portion of the shaft portion 95a, and an annular portion 95b.
And a projection 95c extending in the axial direction at an equal angle (120 °) interval from the outer edge of the projection. A ball 96 is held at the tip of the shaft portion 95 a (the end on the driven side rotating body 89 side), and a part of the ball 96 protruding from the tip is in contact with the driven side rotating body 89. Further, a two-sided width concave portion 95d is formed at the base end of the shaft portion 95a, and the two-sided width convex portion 66a of the rotary shaft 66 is fitted into the two-sided width concave portion 95d. The projecting portion 95c passes through the insertion hole 94d of the retainer 94,
It is arranged in the engagement groove 89a of the driven side rotating body 89.

In the clutch 91 having such a configuration, when the driving-side rotating body 95 rotates integrally with the rotation of the rotating shaft 66, the projecting portion 95c pushes the side surface (surface in the circumferential direction) of the insertion hole 94d of the retainer 94, and Then, the side surface (surface in the circumferential direction) of the engagement groove 89a of the driven side rotating body 89 is pressed. Therefore, at this time, the driven side rotating body 89 is set at a predetermined rotation angle with respect to the driving side rotating body 95, and the retainer 94 is moved to the driving side rotating body 95.
At a predetermined rotation angle. That is, the retainer 94
Is set to a predetermined rotation angle with respect to the driven side rotating body 89, and the steel ball 93 is arranged at a position corresponding to a substantially central portion of the control surface 89b. Therefore, the rotation of the driven-side rotator 89 is not prevented, and the driven-side rotator 89 rotates together with the drive-side rotator 95.

Therefore, in such a clutch 91, when the rotation shaft 66 of the motor main body 62 rotates, the driven rotation member 89 rotates together with the driving rotation member 95, and transmits the rotational force to the worm shaft 88. Therefore, the rotational force of the worm shaft 88 is reduced by the worm wheel 84 and the output shaft 85.
The window glass 7 is opened and closed by the regulator 6.

On the other hand, when the driven rotator 89 rotates slightly together with the worm shaft 88, the steel ball 93 relatively moves toward the end of the control surface 89b. The rotation of the driven-side rotator 89 is transmitted to the retainer 94 via the drive-side rotator 95.
Before the transmission, the steel ball 93 is clamped between the control surface 89b and the inner peripheral surface 92b of the collar 92 (locked). Therefore, further rotation of the driven-side rotator 89 is prevented, and the driven-side rotator 95 does not rotate.

Therefore, in such a clutch 91, when the motor main body 62 is not driven, an external force acts in the opening (down) direction of the window glass 7, and the output shaft 8
When a rotational force acts on 5, the driven-side rotating body 89 is locked. Therefore, the output shaft 85 is also in the locked state,
Further operation of the window glass 7 in the opening direction is prevented.

Next, an operation test of the clutch 91 provided in the motor 61 will be described. For this operation inspection, an inspection jig 96 as shown in FIG. 11 is used. Note that the inspection jig 96 of the present embodiment differs from the inspection jig 51 of the first embodiment only in the tip of the connection pin 54, and therefore, similar parts are denoted by the same reference numerals. Only the different parts will be described in detail.

At the distal end of the connecting pin 97, three connecting projections 97a are formed at equal intervals (120 °) to be connected to the driving hole 89c of the driven rotating body 89 so as to be integrally rotatable from the axial direction. .

[Operation Inspection of Clutch 91] Lock operation test In this test, a lock operation test is performed. In this inspection, as shown in FIG. 11, before assembling the motor main body 62 and the speed reduction portion 63, the lock portion of the clutch 91, that is, the driven-side rotating body 89 (worm member 83) and the retainer 94 holding the steel ball 93 are provided. , And the collar 92 are assembled in this order to the speed reduction housing 81 of the speed reduction unit 63. That is,
In a state where the motor main body 62 and the speed reducing portion 63 are not assembled, the connecting protrusion 97 a of the connecting pin 97 is
Into the drive hole 89c from the axial direction, and
And the driven side rotating body 89 are connected so as to be integrally rotatable.

In this state, the spindle 52 is rotated to connect the connecting pin 97 and the driven side rotating body 89 (the worm shaft 8).
8) A rotational force is applied. At this time, when the clutch 91 normally locks the rotation of the driven-side rotating body 89 (worm shaft 88), the rotation of the connecting pin 97 is also locked. Rotation force acts. Therefore, the guide 53, that is, the spindle 52 rotates against a predetermined frictional force between the step 53b and the flange 54a. And such a connecting pin 9
7 and the guide 53 are detected, and it is determined that the lock operation of the clutch 91 is normal based on a detection signal based on the detection. Note that the spindle 52 is rotated in both directions, and the bidirectional rotation lock of the clutch 91 is checked.
After it is determined that the one-way lock of the worm shaft 88 is normal, the lock is released by a release jig 98 as shown in FIG. The release jig 98 has a plurality of protrusions 9 that can be inserted into the respective insertion holes 94d of the retainer 94 at the distal end.
8a is formed, the projection 98a is inserted into the insertion hole 94d, and the lock is released by rotating the retainer 94 in one direction.

On the other hand, when the spindle 52 is rotated and the clutch 91 does not normally lock the rotation of the driven-side rotating body 89 (worm shaft 88), the rotational force between the connecting pin 97 and the guide 53 exceeds the set value. Does not work. for that reason,
Due to the frictional force between the step portion 53b and the flange portion 54a, the connection pin 97 rotates together with the rotation of the spindle 52. Then, the relative rotation between the connection pin 97 and the guide 53 is detected, and it is determined that the locking operation of the clutch 91 is abnormal based on a detection signal based on the detection.

If it is determined that the lock operation of the clutch 91 is abnormal, the work of replacing the lock portion of the clutch 91 is performed, and the lock operation test is performed again.
If the lock operation of the clutch 91 is determined to be normal, the motor body 62 in which the driving-side rotating body 95 is fixed to the rotating shaft 66 is assembled from the axial direction as shown in FIG. That is, the fitting projections 81 c and 81 d of the reduction housing 81 are connected to the through holes 64 of the yoke housing 64.
b, 64c, and the projecting portion 95c of the driving side rotating body 95 is inserted into the engaging groove 89a of the driven side rotating body 89 through the insertion hole 94d of the retainer 94.

[0113] 2. In this test, power is supplied to the motor 61 (see FIG. 9) assembled as described above, and whether or not the output shaft 85 has rotated normally based on the driving of the motor main body 62 is checked. That is, in the clutch 91, it is checked whether or not the rotational force of the driving side rotating body 95 is transmitted to the driven side rotating body 89. If the output shaft 85 rotates normally, the motor 61
Passes.

As described above, according to the present embodiment,
It has the following effects. (1) In the present embodiment, a drive hole 89 c that is rotatably connected to a connection pin 97 of an inspection jig 96 for inspecting the lock operation of the clutch 91 is provided on a driven-side rotating body 89 integrally formed with a worm shaft 88. Provided. And clutch 9
In order to inspect the lock operation of No. 1, the connecting projection 97 a of the connecting pin 97 is inserted into the drive hole 89 c from the axial direction, and the pin 97 is connected to the driven-side rotating body 89 (worm shaft 88). From the driven side rotating body 89 (worm shaft 8
This is performed by applying a predetermined rotational force to 8). That is, the lock operation inspection of the clutch 91 is performed in the preceding stage of the worm wheel 84, that is, the driven-side rotating body 8 on the input side of the speed reduction mechanism.
9 (the worm shaft 88) can be performed by directly applying a rotational force, so that inspection can be performed with a small rotational force. Therefore, it is not necessary to increase the rigidity of the inspection jig 96, and the cost of the jig 96 can be reduced. As a result, the inspection cost can be reduced, and the cost of the motor 61 can be reduced.

(2) Lock portions 89 and 92 of clutch 91
Nos. 94 are formed such that the motor main body 62 and the reduction section 63 are not assembled, and can be assembled to the reduction housing 81 of the reduction section 63. Then, before assembling the motor main body 62 to the speed reducer 63 (without assembling),
The lock portions 89, 92 to 94 of the clutch 91 are assembled to the speed reduction housing 81, and the connection pin 97 of the inspection jig 96 is connected to the drive hole 89c from the side where the motor main body 62 is assembled, and the lock operation of the clutch is inspected. Therefore,
The defective clutch 91 is detected earlier in the assembling process than when the inspection is performed after the motor main body 62 is assembled to the speed reduction unit 63. As a result, useless assembling work can be reduced, and assembling cost can be reduced.

(3) In the inspection using the inspection jig 96, the connecting pin 97 is connected to the driven side rotating body 89 (worm shaft 88), and the driven side rotating body 89 (worm shaft 8) is connected from the pin 97.
The lock operation test of the clutch 91 can be performed only by applying the predetermined rotational force to 8). Therefore, the inspection using the inspection jig 96 can be performed easily and in a short time.

(4) The inspection jig 96 includes a connecting pin 97 connected to the worm shaft 88 so as to be rotatable integrally therewith, and the pin 97.
And a guide 53 rotatably supporting the pin 97 so that a predetermined frictional force is generated in the rotational direction between the guide 53 and the guide member 53. Therefore, the inspection jig 96 can have a simple configuration.

(5) The inspection jig 96 includes the spring 55 for urging the connecting pin 97 to press the guide pin 53 against the guide 53.
Then, the urging force of the spring 55 is changed to adjust the frictional force, that is, the rotational force applied to the driven-side rotating body 89 (the worm shaft 88). Therefore, the adjustment of the rotational force can be easily performed.

(6) Drive Hole 89 Connected to Inspection Jig 96
“c” is provided on an end face of the driven-side rotating body 89 on the driving-side rotating body 95 side integrally formed on the base end side of the worm shaft 88. That is, the connection pin 97 of the inspection jig 96 is inserted and connected to the drive hole 89 c along the axial direction of the worm shaft 88.
Therefore, it is possible to easily connect the inspection jig 96 and the worm shaft 88, and it is possible to easily apply a rotational force from the jig 96 to the worm shaft 88.

(7) The drive hole 89c of the driven side rotating body 89 integrally formed with the worm shaft 88 is shaped to engage with the connecting pin 97 of the inspection jig 96 in the rotational direction (three axial directions at equal angular intervals). Since the worm shaft 88 (the driven-side rotating body 89) is formed in a concave shape, the worm shaft 88 can reliably receive a predetermined rotational force from the inspection jig 96.

(8) Since the driven hole 89c as the connecting portion is formed in the driven-side rotating body 89 integrally formed with the worm shaft 88, the driving hole 89c to which the inspection jig 96 (the connecting pin 97) is connected can be easily formed. It can be formed in a configuration.

(9) The clutch 91 to be assembled to the deceleration housing 81 is provided with lock portions 89, 92 to 92 to prevent the rotation from the worm shaft 88 side, except for the drive side rotating body 95 fixed to the tip end of the rotary shaft 66. Since it is 94, the drive hole 89c to which the inspection jig 96 (the connection pin 97) is connected can be formed in the driven-side rotating body 89 with a simple configuration.

(10) There is no need to provide the holes 21d and 21e in the speed reduction housing 21 as in the first embodiment.
This eliminates the need for injection molding the elastomer resin 27 into the holes 21d and 21e. Therefore, the number of manufacturing steps can be reduced, and the manufacturing cost of the motor 1 can be reduced.

Note that the embodiment of the present invention may be modified as follows. In the first embodiment, in the operation test of the clutch 30, the rotational force transmission test is performed first, and then the lock operation test is performed. However, the lock operation test may be performed first. Alternatively, only the lock operation inspection may be performed.

In the above embodiments, the inspection jig 51,
Although the 96 is configured as shown in FIGS. 7 and 11, the configuration is not limited to this. For example, the connection pins 54 and 97 may be biased by an elastic member other than the spring 55. Further, a predetermined frictional force may be generated between the connecting pins 54 and 97 and the guide 53 by means other than the elastic member (spring 55). The shape of each component is not limited to this. Also, clutch 3
Although the quality of the lock operation of the clutches 30 and 91 is electrically determined based on the detection signal corresponding to the operation of 0 and 91, the determination may not be electrically performed.

In the first embodiment, the connecting portion (connecting convex portion 23c) of the worm shaft 23 to the jig 51 is formed to have a rectangular cross section, but may have another shape.
In order to ensure that the rotational force from the inspection jig 51 is applied to the worm shaft 23, the shape of the connecting portion must be changed.
It is preferable to have a shape that engages with 1 in the rotation direction.
In this case, according to the shape of the connecting portion of the worm shaft 23, the connecting portion (the connecting concave portion 5) of the jig 51 (the connecting pin 54) is used.
It is necessary to change the shape of 4c).

In the second embodiment, the inspection jig 9
Although the three connecting portions (drive holes 89c) with the 6 are formed in three axially concave shapes at equal angular intervals, other shapes may be used. In addition, the worm shaft 88 (the driven-side rotating body 89)
In order to ensure that the rotational force from the inspection jig 96 acts on the connection jig 96, it is preferable that the connecting portion be shaped to engage with the inspection jig 96 in the rotational direction. For example, the drive hole 89c
Instead, as shown in FIG. 13, a connecting convex portion 89 d having a rectangular cross section and projecting in the axial direction from the driven-side rotating body 89 may be used. In this case, the connection pin 97 of the inspection jig 96 is used.
It is necessary to change the shape of the connecting portion (the connecting convex portion 97a) to the same shape as the connecting concave portion 54c of the connecting pin 54 of the inspection jig 51 of the first embodiment.

In the first embodiment, the communication holes 21
Although e is shaped as shown in FIGS. 1 and 7, it is not limited to this shape. For example, as shown in FIG. 8, a communication hole 21g formed in a drum shape may be used. This communication hole 21g has a tapered surface 21h as in the above embodiment.
have. Therefore, when the resin 27 is filled, the resin 27 comes into close contact with the tapered surface 21h, so that it is possible to reliably prevent water from entering the motor 1 through the hole 21g. Further, it may be a communication groove having an inner peripheral surface along the axial direction, and having an annular groove having a rectangular cross section at an axially intermediate portion of the inner peripheral surface. Further, it may be simply a communication hole having an inner peripheral surface along the axial direction.

In the first embodiment, the holes 21d and 21e for inserting the jig 51 are provided coaxially with the worm shaft 23, but the position of the hole for inserting the jig is limited to this. Instead, the holes may be provided in the radial direction of the worm shaft 23, for example.

In the first embodiment, the holes 21d, 21d,
Although the elastomer resin 27 is filled (injection-molded) into 21e, the resin material is not limited to this, and another resin having elasticity may be filled.

In the first embodiment, the bottomed cylindrical thrust receiving member 26 is used. However, the present invention is not limited to this shape, and may be, for example, a plate. The worm shaft 23 is formed by the thrust receiving member 26 and the ball 25.
, But the configuration is not limited to this.

In the above embodiments, the motors 1 and 61 are configured as shown in FIGS. 1 and 9, but the present invention is not limited to this configuration. For example, although the motor bodies 3 and 62 are DC motors, other motors may be used. Further, the configuration of the speed reducers 4 and 63 is not limited to this. For example, the worm shafts 23 and 88 and the worm wheels 24 and 8
4, a gear may be provided. In addition, the clutches 30 and 91 are configured as shown in FIGS. 2 to 5 and FIG. 10, but are not limited to this configuration.

In the above embodiments, the present invention is applied to the motors 1 and 61 of the power window device mounted on the vehicle. However, the present invention is applied to the motors of the devices mounted on other vehicles and the motors of devices other than the vehicle. Is also good.

The technical ideas other than those described in the claims which can be understood from the above embodiment will be described below together with their effects. (B) In the method of inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to claim 3,
A method for testing the operation of a clutch built in a motor with a speed reduction mechanism, wherein the method is provided on a driven-side rotating body of the clutch, which is provided so as to rotate integrally with a base end side of the worm shaft. With this configuration, the connecting portion to which the inspection jig is connected can be formed with a simple configuration.

(B) In the method of inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to claim 3 or (a), the clutch assembled to the speed reduction unit is integrally rotated on the tip end side of the rotating shaft. A method for testing the operation of a clutch built in a motor with a speed reduction mechanism, characterized in that it is a lock portion for preventing rotation from the worm shaft side, excluding a drive side rotating body provided to perform the operation. With this configuration, the connecting portion to which the inspection jig is connected can be formed with a simple configuration.

(C) In the method of inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism according to claim 4, the connecting pin is urged to press the support member against the support member so as to generate the predetermined frictional force. An operation inspection method of a clutch built in a motor with a speed reduction mechanism, comprising an urging member. This makes it possible to easily generate a predetermined frictional force between the connecting pin and the support member.

[0137]

As described in detail above, according to the present invention,
It is possible to provide a method of inspecting the operation of a clutch built in a motor with a speed reduction mechanism and a motor with the speed reduction mechanism that can reduce the inspection cost.

[Brief description of the drawings]

FIG. 1 is a sectional view of a motor according to a first embodiment.

FIG. 2 is an exploded perspective view of the clutch according to the first embodiment.

FIG. 3 is a diagram for explaining a clutch according to the first embodiment.

FIG. 4 is a diagram for explaining a clutch according to the first embodiment.

FIG. 5 is a diagram illustrating a clutch according to the first embodiment.

FIG. 6 is a schematic configuration diagram of a power window device.

FIG. 7 is a schematic configuration diagram of an inspection jig according to the first embodiment.

FIG. 8 is a cross-sectional view of a main part of another example of a motor.

FIG. 9 is a cross-sectional view of a motor according to a second embodiment.

FIG. 10 is an enlarged sectional view of a main part of a clutch according to a second embodiment.

FIG. 11 is a schematic configuration diagram of an inspection jig according to a second embodiment.

FIG. 12 is a diagram illustrating a motor according to a second embodiment.

FIG. 13 is a sectional view of a main part of another example of a clutch.

[Explanation of symbols]

3, 62: motor body, 4, 63: reduction section, 13, 66
... Rotating shafts, 21,81 ... Deceleration housing, 21d ... Thrust receiving accommodation holes as holes, 21e, 21g ... Communication holes as holes, 21f, 21h ... Tapered surfaces, 23,88 ... worm shaft, 23c, 89d ... Connection Connecting projection as a part,
24, 84: worm wheel, 26: thrust receiving member, 27: elastomer resin as elastic resin, 30, 9
DESCRIPTION OF SYMBOLS 1 ... Clutch, 51, 96 ... Inspection jig, 53 ... Guide as a support member, 54, 97 ... Connection pin, 55 ... Spring as an urging member, 89 ... Driven side rotating body, 89c ... Drive as a connection part hole.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshimasa Tomita 390 Umeda, Kosai-shi, Shizuoka Asmo F-term (reference) 2G024 AB13 BA11 DA09 3J009 DA14 EA06 EA19 EA32 ED17 FA04 FA14 5H607 AA08 BB01 BB14 CC01 CC03 DD03 DD08 EE02 EE32 EE36

Claims (12)

[Claims] A motor body having a rotating shaft; a speed reducing unit housing a speed reducing mechanism including a worm shaft rotating based on the rotation of the rotating shaft and a worm wheel meshing with the worm shaft in a speed reducing housing; The motor is provided between the rotating shaft and the worm shaft, and transmits the rotation from the rotating shaft to the worm shaft, and is incorporated in a motor with a reduction mechanism having a clutch for locking the rotation from the worm shaft side. In the method for inspecting the operation of a clutch, a connecting portion for integrally rotating with an inspection jig is provided on the worm shaft, the inspection jig and the connecting portion are connected, and a predetermined rotational force is applied from the inspection jig to the worm shaft. The locking operation of the clutch is inspected by providing the motor with a speed reduction mechanism. 2. The method for inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism according to claim 1, wherein a hole for inserting the inspection jig from the outside into the speed reduction housing is provided, and the inspection is performed on the hole. A method for inspecting the operation of a clutch built in a motor with a speed reduction mechanism, comprising inserting a jig and connecting the inspection jig to the connection portion. 3. The method for inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism according to claim 1, wherein the inspection of lock operation of the clutch is performed before assembling the motor body to the speed reduction unit. Wherein the connecting portion is provided on a base end side of the worm shaft on which the clutch is provided, and the inspection jig is connected to the connecting portion from a side where the motor body is assembled. Of clutch operation inspection. 4. The method for inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism according to claim 1, wherein the inspection jig is coupled to the coupling portion so as to be integrally rotatable. A pin, and a supporting member that rotatably supports the connecting pin so that a predetermined frictional force is generated in the rotational direction between the connecting pin and the connecting pin. A method for inspecting the operation of a clutch incorporated in a motor with a speed reduction mechanism, wherein a predetermined rotational force is applied. 5. The method for inspecting the operation of a clutch built in a motor with a speed reduction mechanism according to claim 4, further comprising an urging member for urging the connection pin to press against the support member. And adjusting the frictional force by changing the urging force of the motor. 6. A motor body having a rotating shaft, a speed reducing portion housing a speed reducing mechanism including a worm shaft rotating based on rotation of the rotating shaft and a worm wheel meshing with the worm shaft in a speed reducing housing, A motor provided with a clutch provided between the rotating shaft and the worm shaft for transmitting rotation from the rotating shaft to the worm shaft and locking the rotation from the worm shaft side; A motor provided with a speed reduction mechanism, wherein a connection portion for rotatably connecting with an inspection jig for inspecting a lock operation of the worm shaft is provided on the worm shaft. 7. The motor with a speed reduction mechanism according to claim 6, wherein a hole for inserting the inspection jig from outside is provided in the speed reduction housing. 8. The motor with a speed reduction mechanism according to claim 7, wherein the connecting portion is provided at a tip of the worm shaft, and the hole is provided coaxially with the worm shaft. Motor with reduction mechanism. 9. The thrust receiving member according to claim 8, wherein the hole has an outer diameter substantially equal to an inner diameter of a portion where the hole is arranged, and receives a thrust load of the worm shaft. A motor with a speed reduction mechanism, wherein an elastic resin is injection-molded after insertion. 10. The motor with a speed reduction mechanism according to claim 9, wherein the hole has a tapered surface formed so as to decrease in diameter toward an outer opening. 11. The motor with a speed reduction mechanism according to claim 6, wherein the clutch is formed so as to be mountable to the speed reduction unit in a state where the motor main body and the speed reduction unit are not mounted. A motor with a speed reduction mechanism, provided on a driven-side rotating body of the clutch, which is provided so as to rotate integrally with a base end side of the worm shaft. 12. The speed reduction mechanism according to claim 6, wherein the connection portion is shaped to engage with the inspection jig in a rotational direction. With motor.