JP5936896B2 - Motor equipment - Google Patents

Description

  The present invention relates to a motor device including a connector unit to which an external connector is connected and a brush holder that holds a brush that is in sliding contact with a commutator.

  2. Description of the Related Art Conventionally, a motor device including a motor unit and a gear unit has been used as a drive source for a wiper device or a power window device mounted on a vehicle such as an automobile. The motor unit and the gear unit are connected to each other by a fastening screw. The motor unit includes a rotating shaft that rotates at a predetermined speed in a predetermined direction by supplying a driving current, and the gear unit reduces the rotation of the rotating shaft to increase the torque. A reduction mechanism is provided. Thus, by providing the gear portion having the speed reduction mechanism, it is possible to obtain a large output while being small in size, thereby improving the in-vehicle performance.

  A motor device mounted on a vehicle includes a connector unit to which an external connector on the vehicle side is connected, and a brush holder that supplies a drive current from the connector unit to a commutator of a rotary shaft via a brush. . The connector unit and the brush holder each supply a drive current from an external connector to the motor unit through a plurality of terminal members embedded by insert molding or the like, or the rotation state of the motor unit or gear unit as a feedback signal It is sent to an in-vehicle controller. As a motor device including such a connector unit and a brush holder, for example, a technique described in Patent Document 1 is known.

  In the motor (motor device) described in Patent Document 1, a connector portion (connector unit) and a brush holder are separated, and a plurality of terminals are embedded in each of the connector portion and the brush holder. . The connector part and the brush holder (including the respective terminals) are connected in advance before being incorporated into the gear housing (casing).

JP 2004-187490 A (FIG. 2)

  However, in the motor device described in Patent Document 1 described above, the connector unit and the brush holder need to be connected in advance before being incorporated into the casing. In this case, each of the connector unit and the brush holder is required. Therefore, it is necessary to carefully work so as not to damage the terminal members embedded in each other. Here, when the connection work is performed by the operator's hand, defective products are likely to be generated and the yield is poor, and a complicated and expensive automatic assembly apparatus is required to perform the connection work accurately and efficiently.

  Therefore, it is conceivable that the connector unit and the brush holder are individually accommodated in the casing, thereby connecting the connector unit and the brush holder within the casing. In this case, since the connection part of the connector unit including the connection part of the terminal member and the brush holder is located in the casing, it is difficult for an operator or the like to visually check the connection part. In particular, the brush holder may be formed in an elliptical shape (vertical left / right symmetric shape) in a cross-sectional shape along the radial direction of the rotation axis. In this case, for example, the brush holder is assembled upside down with respect to the casing. Then, the terminal of the connector unit and the brush holder may be broken. Therefore, in order to securely connect the connector unit and the brush holder without damage, it is necessary to reliably prevent the brush holder from being erroneously assembled to the connector unit and the casing.

  The objective of this invention is providing the motor apparatus which can prevent reliably that a brush holder is assembled | attached incorrectly with respect to a connector unit and a casing.

The motor device of the present invention is a motor device including a connector unit to which an external connector is connected and a brush holder that holds a brush that is in sliding contact with the commutator, and each of the connector unit and the brush holder is individually provided. A casing for housing, a connector unit housing portion provided in the casing, in which the connector unit is housed from one direction, and provided in the casing, wherein the brush holder is housed from another direction intersecting the one direction , a brush holder accommodating unit commutator Ru is formed alongside the connector unit housing portion in the axial direction of the rotary shaft fixed, is provided in the connector unit, the connector unit through hole prior Machinery rotating shaft penetrates, Provided in the connector unit and arranged at a position shifted from the central axis of the connector unit through hole. A guide recess provided in the brush holder, the brush holder through-hole through which the rotating shaft passes, and a brush holder provided in the brush holder and disposed at a position deviated from a central axis of the brush holder through-hole. And a guide convex portion that enters the guide concave portion in the casing when the holder is accommodated in the brush holder accommodating portion.
The motor device of the present invention includes a motor case that accommodates a part of the rotating shaft together with the casing, and a position of a terminal portion on the motor case side of the brush holder accommodating portion, and the motor case side of the brush holder The position of the terminal part located in is in agreement with the axial direction of the rotating shaft.

  The motor device according to the present invention is provided with an engaging portion extending along an accommodation direction of the brush holder on the inner peripheral wall of the brush holder accommodating portion, and the brush holder accommodating portion of the brush holder on the outer peripheral wall of the brush holder. An engaged portion that engages with the engaging portion when being housed is provided.

  According to the motor device of the present invention, the guide recess is provided at a position shifted from the central axis of the connector unit through hole of the connector unit, and the brush holder of the brush holder is positioned at a position shifted from the central axis of the brush holder through hole of the brush holder. A guide convex portion that enters the guide concave portion when housed in the housing portion is provided. Thus, when the brush holder is correctly assembled to the connector unit and the casing, the guide convex portion enters the guide concave portion, and the brush holder is positioned at a normal position with respect to the connector unit and the casing. On the other hand, when the brush holder is incorrectly assembled to the connector unit and the casing, the guide convex portion cannot enter the guide concave portion, and therefore the brush holder cannot be assembled to the connector unit and the casing. Therefore, it is possible to reliably prevent the brush holder from being erroneously assembled to the connector unit and the casing.

  According to the motor device of the present invention, the engagement portion extending along the direction in which the brush holder is accommodated is provided on the inner peripheral wall of the brush holder accommodating portion, and the brush holder is accommodated in the brush holder accommodating portion on the outer peripheral wall of the brush holder. Since the engaged portion that engages with the engaging portion is sometimes provided, the assembly directionality can be grasped by confirming the engaging portion and the engaged portion in addition to the guide concave portion and the guide convex portion. It is possible to more reliably prevent erroneous assembly with respect to the connector unit and the casing.

It is a top view of the rear wiper motor mounted in a vehicle. It is a fragmentary sectional view which follows the AA line of FIG. It is an enlarged view of the broken-line circle B part of FIG. (A), (b) is a perspective view which shows the detail of a stopper plate. (A), (b) is the perspective view and top view which show the detail of a gear case. It is sectional drawing which shows only the gear case which follows the CC line of FIG. It is a top view which shows the detail of the switching plate which a contact plate slidably contacts. It is the perspective view which looked at the connector unit from the gear part side. It is the perspective view which looked at the connector unit from the motor part side. It is a fragmentary sectional view which follows the DD line | wire of FIG. It is the perspective view which looked at the brush holder from the gear part side. It is the perspective view which looked at the brush holder from the motor part side. It is a fragmentary sectional view which follows the EE line of FIG. It is explanatory drawing explaining the accommodation procedure to the gear case of a connector unit and a brush holder. It is the perspective view which looked at the gear case which accommodated the connector unit from the motor part side. It is explanatory drawing explaining the connection procedure of a gear part and a motor part. It is a top view which shows the gear part of the rear wiper motor which concerns on 2nd Embodiment. It is a fragmentary sectional view corresponding to Drawing 2 concerning a 3rd embodiment.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. 1 is a plan view of a rear wiper motor mounted on a vehicle, FIG. 2 is a partial cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is an enlarged view of a broken-line circle B portion in FIG. .

  As shown in FIG. 1, a rear wiper motor 10 as a motor device is used as a drive source for a rear wiper device (not shown) mounted on a rear hatch of a vehicle, and includes a motor unit 20 and a gear unit 30. . The motor unit 20 and the gear unit 30 are coupled together by a pair of fastening screws 11. The rear wiper motor 10 is disposed in a narrow space such as a rear hatch, and reciprocally wipes (oscillates) a wiper blade (not shown) provided on a rear glass (wind shield) (not shown) within a predetermined angle range. It has become.

  As shown in FIGS. 1 and 2, the motor unit 20 is configured as a four-pole motor with a brush, and includes a motor case (yoke) 21 that forms the outline of the motor. The motor case 21 is formed into a bottomed cylindrical shape by pressing a steel plate that is a magnetic body, and a flange portion provided with an insertion hole 21a through which each fastening screw (fastening member) 11 is inserted. 21b is provided integrally. As shown in FIG. 2, the motor case 21 has a substantially oval cross section so as to have a pair of arc portions 21c and a pair of straight portions 21d. Thus, the width of the motor case 21, that is, the thickness dimension in the left-right direction in the figure is reduced to reduce the thickness.

  A total of four magnets 22 having a substantially arc-shaped cross section are fixed inside the motor case 21. Each magnet 22 is a ferrite magnet, for example, and is fixed at equal intervals (90 degree intervals) along the circumferential direction of the motor case 21, and an armature (rotation) is provided inside each magnet 22 via a predetermined gap. (Child) 23 is rotatably accommodated. The proximal end side of the armature shaft (rotating shaft) 24 is fixed through the rotation center of the armature 23.

  A commutator (commutator) 25 is fixed to a substantially central portion along the axial direction of the armature shaft 24, and the commutator 25 includes ten segments 25a. An armature core 26 that forms the armature 23 is fixed to the proximal end side of the armature shaft 24, and the armature core 26 includes ten slots 26a. A plurality of armature coils 26b are wound around each slot 26a with a predetermined winding method and a predetermined number of turns. The coil end of each armature coil 26b is electrically connected to each segment 25a.

  A plurality of power supply brushes (brushes) 25b (only one is shown in FIG. 1) is in sliding contact with each segment 25a of the commutator 25. Each power supply brush 25b is movably provided in a brush holder 70 accommodated in the brush holder accommodating portion 34 of the gear case 31, and a drive current from the connector unit 50 is supplied to each power supply brush 25b. Yes. As described above, the motor unit 20 and the connector unit 50 are electrically connected via the power supply brushes 25b, the commutator 25, and the armature coil 26b, whereby an electromagnetic force is generated in the armature coil 26b, and the armature 23 (armature The shaft 24) rotates. In FIG. 2, each power supply brush 25 b and the brush holder 70 are not shown for easy understanding.

  The base end side of the armature shaft 24 is rotatably supported only by a radial bearing 27 provided at the bottom of the motor case 21, and between the base end side of the armature shaft 24 and the bottom of the motor case 21, A thrust bearing for supporting the armature shaft 24 from the axial direction is not provided. Here, the radial bearing 27 is formed in a substantially cylindrical shape by, for example, a sintered material, thereby having low noise, impact resistance, and self-lubricating properties, and further, abrasion powder is hardly generated. However, the radial bearing 27 may be formed of a plastic material having excellent heat resistance instead of the sintered material.

  A worm gear 24 a (not shown in detail) is integrally provided on the distal end side of the armature shaft 24, and the worm gear 24 a rotates in the gear case 31 as the armature shaft 24 rotates. The worm gear 24 a is formed in a spiral shape and meshes with the gear teeth 32 a of the worm wheel 32. Here, the worm gear 24a and the worm wheel 32 constitute a speed reduction mechanism. As the worm gear 24a rotates, the worm wheel 32 rotates in a decelerated state than the worm gear 24a, and outputs the rotation that has been decelerated and increased in torque to the outside.

  Between the armature 23 of the armature shaft 24 and the worm gear 24a, a bearing fixing portion 24b having a concavo-convex shape (serration shape) is formed in the radial direction of the armature shaft 24 as shown in FIG. An inner ring member 28a of a ball bearing (bearing member) 28 is fixed to the bearing fixing portion 24b by press fitting. Here, the ball bearing 28 is fixed to the bearing fixing portion 24b only by the pressing force when the inner ring member 28a is press-fitted into the armature shaft 24 without forming an uneven shape (serration shape) in the bearing fixing portion 24b. Anyway.

  The ball bearing 28 includes an inner ring member 28a and an outer ring member 28b, and a plurality of steel balls 28c are provided between the inner ring member 28a and the outer ring member 28b. Between the inner ring member 28a and the outer ring member 28b, in addition to each steel ball 28c, there is a pair of annular cover members 28d that prevent leakage of lubricating grease (not shown) applied to each steel ball 28c to the outside. Is provided.

  The outer ring member 28 b of the ball bearing 28 is sandwiched between a bearing fitting portion 36 of the gear case 31 and a stopper plate 60 attached to the gear case 31. Thus, the armature shaft 24 is rotatably supported by fixing the inner ring member 28a of the ball bearing 28 to the bearing fixing portion 24b of the armature shaft 24 and fixing the outer ring member 28b of the ball bearing 28 to the gear case 31. At the same time, movement in the axial direction and the radial direction with respect to the gear case 31 is restricted.

  Thus, the ball bearing 28 has a function as a radial bearing and a thrust bearing. Therefore, a thrust bearing that supports the armature shaft 24 from the axial direction is not provided between the distal end side of the armature shaft 24 and the gear case 31.

  Here, since the rear wiper motor 10 is configured as a small four-pole motor, the amount of heat generated is larger than that of a large two-pole motor having the same output, for example. However, since thrust bearings are not provided on both ends of the armature shaft 24 in the axial direction, the sliding loss of the armature shaft 24, that is, frictional resistance with the thrust bearing is eliminated, and an increase in the amount of heat generated is prevented. Like to do.

  The bearing fitting portion 36 is provided in the vicinity of the connector unit housing portion 35 (see FIG. 1) in the gear case 31 and is formed in an annular shape in the gear case 31. The bearing fitting portion 36 opens toward the motor portion 20 (motor case 21), and the ball bearing 28 is fitted into the bearing fitting portion 36 from the motor portion 20 side. . Here, a through hole 37 coaxial with the bearing fitting part 36 is provided on the opposite side of the bearing fitting part 36 from the motor part 20 side, and the through hole 37 includes the motor part 20 and the gear part 30. At the time of assembly, the distal end side of the armature shaft 24, that is, the worm gear 24a is inserted.

  A stopper plate insertion portion 38 into which the stopper plate 60 is inserted is provided on the motor portion 20 side of the bearing fitting portion 36 in the gear case 31. The stopper plate insertion portion 38 opens toward the gear cover side (the front side in the figure), and the stopper plate 60 can be inserted into the stopper plate insertion portion 38 from the opening side of the gear case 31 without the gear cover attached. It is like that.

  4A and 4B are perspective views showing details of the stopper plate.

  As shown in FIG. 4, the stopper plate 60 is formed in a substantially U shape by pressing a steel plate, and includes a support main body portion 61 and a pair of inserted portions 62. The support body 61 is formed with a notch 61a that maintains a non-contact state with respect to the armature shaft 24 (broken line in the drawing) when the support body 61 is attached to the stopper plate insertion portion 38. In addition, the support main body 61 abuts against the outer ring member 28b of the ball bearing 28 when the stopper plate 60 is mounted on the stopper plate insertion portion 38, thereby fixing the ball bearing 28 to the bearing fitting portion 36. The bearing support convex portion 61b is provided.

  Each inserted portion 62 is provided at a position offset by a predetermined amount from the position of the support main body portion 61 along the axial direction of the armature shaft 24. In this manner, the stopper plate 60 is formed in a substantially stepped shape with a steel plate, so that the stopper plate 60 has a spring property, thereby elastically pressing the outer ring member 28b of the ball bearing 28, and the gear case 31 of the ball bearing 28. It is sure to prevent rattling in the inside. Furthermore, each bearing support convex part 61b is displaced from the center position of the ball bearing 28 upward in the figure with respect to the mounting direction of the stopper plate 60 (vertical direction in the figure). Thereby, the play in the gear case 31 of the ball bearing 28 is more effectively prevented without being affected by variations in the manufacturing accuracy of each component.

  Guide tapers 61c and 62a are provided on the opening side of the cutout portion 61a and the distal end side (lower side in the figure) of the inserted portion 62, respectively, and each guide taper 61c and 62a leads to the stopper plate insertion portion 38 of the stopper plate 60. It is designed to function as a wearing guide. This facilitates the work of attaching the stopper plate 60 to the gear case 31 and improves the assembly workability of the rear wiper motor 10.

  Here, since the stopper plate 60 supports the armature shaft 24 in the axial direction and no thrust bearings are provided on both ends of the armature shaft 24 in the axial direction, the axial direction of the armature shaft 24 after the rear wiper motor 10 is assembled. No need to adjust the position. Further, since high accuracy is not required for setting the clearances of the gear case 31 and the armature shaft 24 facing the both ends in the axial direction of the armature shaft 24, the manufacturing cost of the rear wiper motor 10 is greatly reduced and the assembling property is improved. ing.

  FIGS. 5A and 5B are a perspective view and a plan view showing details of the gear case, and FIG. 6 is a cross-sectional view showing only the gear case taken along line CC in FIG.

  As shown in FIGS. 1, 5, and 6, the gear unit 30 includes a gear case (casing) 31 formed in a substantially bathtub shape by casting a molten aluminum material or the like. The gear case 31 includes a bottom 31a and a wall 31b, and a mounting opening 31c is provided on the side opposite to the bottom 31a. The mounting opening 31c is closed by a gear cover (not shown), and the worm wheel 32, the connector unit 50, and the like are accommodated in the gear case 31 from the mounting opening 31c.

  A brush holder housing part 34 is integrally provided on the motor part 20 side of the gear case 31. The brush holder accommodating portion 34 is formed in a cylindrical shape so as to extend along the axial direction of the armature shaft 24 (see FIG. 1), and its cross section is formed in a substantially oval shape like the motor case 21 (see FIG. 2). Yes.

  The brush holder accommodating part 34 is provided with the inner peripheral wall which consists of a pair of circular arc-shaped wall parts 34a and 34b and a pair of linear wall part 34c. The one arcuate wall 34a is formed with a receiving wall 71b of the brush holder 70 and a recess 34d into which the holder-side first ground terminal ET1 (see FIG. 11) enters, and the other arcuate wall 34b has a brush 34b. A step 34e is formed in which the holder-side second ground terminal ET2 (see FIG. 12) of the holder 70 is positioned. Here, the recessed portion 34d and the stepped portion 34e constitute an engaging portion in the present invention, and both are formed to extend in the axial direction of the armature shaft 24 (the accommodation direction of the brush holder 70).

  A total of four positioning protrusions 34f are integrally provided on the opposite side of the brush holder housing portion 34 from the motor portion 20 side along the axial direction of the armature shaft 24. Each positioning protrusion 34f is provided at each of the four corners inside the brush holder accommodating portion 34 formed in a connection portion between each arcuate wall portion 34a, 34b and each linear wall portion 34c, that is, in a substantially oval shape. Yes. The positioning protrusions 34f are arranged so as to face each other with the central portion of the brush holder accommodating portion 34 interposed therebetween, and are directed toward the inside of the brush holder accommodating portion 34 so that the cross-sectional shape along the radial direction of the armature shaft 24 becomes a substantially triangular shape. It protrudes.

  Each positioning projection 34f includes a front end surface SF1 facing the axial direction of the armature shaft 24 and a pair of outer surfaces SF2 facing the radial direction of the armature shaft 24. Each positioning projection 34f enters and engages with each positioning recess 71d (see FIG. 11) of the brush holder 70, the tip surface SF1 abuts against the bottom surface SF3 of the positioning recess 71d, and each outer surface SF2 Each of the positioning recesses 71d comes into contact with each inner side surface SF4.

  As a result, the brush holder 70 can be positioned in the regular position in the brush holder housing 34 without rattling. However, four positioning protrusions 34f may not be provided, and at least two positioning protrusions 34f may be provided so as to face each other with the central portion of the brush holder housing portion 34 interposed therebetween.

  The arc-shaped wall portions 34a and 34b and the linear wall portions 34c forming the inner wall of the brush holder accommodating portion 34 are in relation to a line segment along the axial direction of the armature shaft 24 (see the broken line arrow (2) in FIG. 14). Is inclined. This inclination is a draft gradient PS1 for smoothly extracting a mold (not shown) used when the gear case 31 is cast. Specifically, as shown in FIG. 6, the separation distance (distance between the opposing surfaces) between the linear wall portions 34c is set to T1 on the positioning projection 34f side of the brush holder housing portion 34, and the brush holder housing portion 34 is set to T2 slightly longer than T1 (T1 <T2).

  Thus, the draft angle PS1 of the brush holder accommodating portion 34 is set to 2.0 ° (see FIG. 14) by setting the separation distance between the respective linear wall portions 34c to T1 and T2. Here, the separation distance (distance between the opposing surfaces) between the arcuate wall portions 34a and 34b is also set to have the same magnitude relationship as the separation distance between the linear wall portions 34c. Thereby, the draft angle PS1 of the brush holder housing part 34 is set to 2.0 ° over the entire circumference of the brush holder housing part 34.

  As shown in FIG. 6, on the opposite side of the gear holder 31 from the brush holder housing portion 34 to the motor portion 20 side, a connector unit housing portion 35 for housing the connector unit 50 is integrally formed adjacent to the brush holder housing portion 34. Is provided. The connector unit housing part 35 includes a motor part side wall part 35 a located on the positioning protrusion 34 f side of the brush holder housing part 34. Further, a stopper plate insertion portion 38 is formed on the side opposite to the motor portion 20 side along the axial direction of the armature shaft 24, and a gear portion side wall portion 35b extending from the bottom portion 31a toward the mounting opening portion 31c is provided.

  A connector main body 51 (see FIGS. 8 to 10) of the connector unit 50 is accommodated between the motor side wall 35a and the gear side wall 35b. The motor side wall part 35a and the gear side wall part 35b are inclined with respect to a line segment along the axial direction of the armature shaft 24 (see the broken line arrow (1) in FIG. 14). This inclination is a draft gradient PS2 for smoothly extracting a mold (not shown) used when the gear case 31 is cast. Specifically, as shown in FIG. 6, the distance between the walls 35a and 35b (distance between the walls) is set to T3 on the bottom 31a side, and is slightly longer than T3 on the mounting opening 31c side. (T3 <T4).

  Thus, by setting the distance between the wall portions 35a and 35b to T3 and T4, the draft angle PS2 of the connector unit housing portion 35 is set to 1.5 ° (see FIG. 14).

  A recess 35c that is recessed in the radial direction of the armature shaft 24 is provided between the motor side wall 35a and the gear side wall 35b and between the positioning protrusions 34f. The insertion protrusion 51e (see FIGS. 8 to 10) of the connector unit 50 enters the recess 35c in a state where the connector unit 50 is accommodated in the connector unit accommodation part 35. Here, when the connector unit 50 is accommodated in the connector unit accommodating portion 35, the connector unit 50 is aligned to engage with the insertion convex portion 51 e in the recess portion 35 c, so that the connector unit 50 is properly positioned in the connector unit accommodating portion 35. Can be positioned accurately.

  As shown in FIGS. 1 and 5, the connector unit housing portion 35 includes a connector support portion 35 d that supports the connector connection portion 52 of the connector unit 50. The connector support part 35d is formed in a bottomed box shape that is open on the same side as the opening side of the mounting opening 31c. The connector support part 35d includes a bottom wall part 35e and a side wall part 35f, and the bottom wall part 35e supports the bottom wall part 52a of the connector connection part 52. On the other hand, a part of the side wall part 35f (the right side in FIG. 1) supports a part of the side wall part 52b of the connector connecting part 52 via a support protrusion 52d (see FIG. 9).

  Accordingly, when connecting an external connector (not shown) on the vehicle side to the connector connecting portion 52, it is possible to prevent a large load from being applied only to the connector unit 50 and prevent the connector unit 50 from being broken. doing. Further, the connector support portion 35d made of an aluminum material covers the periphery of the connector connection portion 52, so that brush noise is prevented from leaking to the outside via the connector connection portion 52.

  FIG. 7 is a plan view showing details of the switching plate with which the contact plate is in sliding contact.

  As shown in FIGS. 1 and 7, a worm wheel 32 is rotatably provided in the gear case 31, and the worm wheel 32 is formed in a predetermined shape by injection molding a resin material such as plastic. Gear teeth 32a are integrally provided on the outer peripheral portion of the worm wheel 32, and the worm gear 24a is engaged with the gear teeth 32a. One end in the axial direction of a wheel shaft 32b made of a steel rod having a circular cross section is fixed to the rotation center of the worm wheel 32, and the other end in the axial direction of the wheel shaft 32b is provided on the bottom 31a of the gear case 31. The boss 31d (see FIGS. 5 and 6) is rotatably supported.

  A switching plate 32c made of a conductive steel plate is mounted on the bottom 31a side of the worm wheel 32 as shown by the hatched portion in FIG. The switching plate 32c is formed in a substantially annular shape, and includes a concave portion 32d that is recessed inward in the radial direction of the switching plate 32c and a convex portion 32e that protrudes inward in the radial direction. As the worm wheel 32 rotates, the distal end sides of the three contact plates CP1 to CP3 provided in the connector unit 50 come into sliding contact with the switching plate 32c.

  As described above, the switching plate 32c having the concave portion 32d and the convex portion 32e is mounted on the worm wheel 32, and the contact plates CP1 to CP3 are provided so as to be in sliding contact with the switching plate 32c. A short circuit state (energized state) or a non-energized state is sent to an in-vehicle controller (not shown). Thereby, the in-vehicle controller can grasp the rotation state of the worm wheel 32, that is, the swing position of the wiper blade, and can stop the wiper blade at a predetermined stop position.

  As shown in FIG. 1, an output shaft 33 made of a steel rod having a circular cross section is disposed at a portion (left side in the drawing) of the gear case 31 away from the worm wheel 32, and the output shaft 33 is connected to the gear case 31. Is supported by a boss 31e (see FIGS. 5 and 6) provided on the bottom 31a. The proximal end side of the output shaft 33 is provided in the gear case 31, and the distal end side (the back side in the drawing) of the output shaft 33 extends to the outside of the gear case 31. A base end portion of the wiper blade is attached (fixed) to an extended portion (not shown) extending to the outside of the output shaft 33.

  In the gear case 31, a motion conversion mechanism 40 that converts the rotational motion of the worm wheel 32 into the swing motion of the output shaft 33 is provided between the base end side of the output shaft 33 and the worm wheel 32. The motion conversion mechanism 40 includes a swing link 41, a connecting plate 42, and a sliding contact plate 43.

  The swing link 41 is formed in a plate shape by punching a steel plate or the like, and one longitudinal end side of the swing link 41 is fixed to the base end side of the output shaft 33. On the other hand, the other end side in the longitudinal direction of the swing link 41 is rotatably connected to one end side in the longitudinal direction of the connecting plate 42 via the first connecting pin P1. The other end in the longitudinal direction of the connecting plate 42 is rotatably connected to a position eccentric from the rotation center of the worm wheel 32 via the second connecting pin P2. Here, the length dimension of the swing link 41 is set to be approximately half (substantially 1/2) the length dimension of the connecting plate 42. The connecting plate 42 is also formed in a plate shape by punching a steel plate or the like in the same manner as the swing link 41.

  Thus, by providing the motion conversion mechanism 40 between the output shaft 33 and the worm wheel 32, the output shaft 33 can be swung in a predetermined angular range as the worm wheel 32 rotates in one direction. Yes. Specifically, the rotational force reduced and increased in torque by the rotation of the worm gear 24a and the worm wheel 32 is transmitted to the second connecting pin P2, and the second connecting pin P2 rotates around the wheel shaft 32b ( (See two-dot chain arrow R). Then, the longitudinal direction other end side of the connection plate 42 also rotates around the wheel shaft 32b, and thereby the longitudinal direction one end side of the connection plate 42 is regulated by the swing link 41 via the first connection pin P1. Oscillate about the output shaft 33 (see the two-dot chain line arrow S).

  The sliding contact plate 43 is formed in a plate shape from a resin material such as plastic having excellent self-lubricating properties, and is attached to the gear cover side (front side in the figure) of the connecting plate 42. A slidable contact portion 43a that is in slidable contact with the gear cover is integrally provided at a central portion in the longitudinal direction of the slidable contact plate 43, and grease (not shown) is applied to the slidable contact portion 43a. As a result, the motion converting mechanism 40 is smoothly operated in the gear case 31 and the motion converting mechanism 40 is prevented from rattling along the axial direction of the output shaft 33 (the depth direction in the figure).

  8 is a perspective view of the connector unit as viewed from the gear portion side, FIG. 9 is a perspective view of the connector unit as viewed from the motor portion side, and FIG. 10 is a partial cross-sectional view taken along line DD in FIG. ing.

  As shown in FIGS. 8 to 10, the connector unit 50 is formed into a predetermined shape by injection molding a resin material such as plastic, and is formed into a connector body portion 51 formed in a plate shape and a box shape with a bottom. Connector connecting portion 52. Here, in FIGS. 8 and 9, the conductive members (electrical parts) are shaded in order to make the explanation of the components easy to understand.

  The cross-sectional shape along the short direction of the connector main body 51 is tapered toward the housing direction (lower side in the figure) of the connector unit 50 with respect to the connector unit housing portion 35 (see FIG. 6). Specifically, the plate thickness dimension at the front end side (lower side in the drawing) along the short direction of the connector main body 51 is T3, and the rear end of the connector main body 51 along the short direction is the receiving direction. The plate thickness dimension on the side (the upper side in the figure) is set to a plate thickness dimension T4 that is slightly thicker than the plate thickness dimension T3 on the front end side in the accommodation direction (T3 <T4).

  By setting the plate thickness dimensions T3 and T4 to be tapered toward the housing direction, the front surface 51a and the back surface 51b of the connector main body 51 are respectively made with respect to the axial direction of the armature shaft 24. The inclined surface is inclined by 1.5 ° (see FIG. 14). Therefore, the connector main body 51 is guided by the walls 35a and 35b when the connector unit 50 is accommodated in the connector unit accommodating portion 35, while the front surface 51a is the gear portion side wall portion 35b and the back surface 51b is the motor portion side wall. The portions 35a are brought into contact with each other by surface contact and are in close contact with each other. That is, even in an assembly operation by the operator's hand, the connector unit 50 can be easily accommodated in the connector unit accommodating portion 35, and the connector unit 50 can be accurately positioned at the normal position of the connector unit accommodating portion 35. It has become.

  A through hole 51c through which the armature shaft 24 (see FIG. 1) passes is formed in a substantially central portion of the connector main body 51. Here, the through hole 51c constitutes the connector unit through hole in the present invention, and the inner diameter of the through hole 51c is set to be slightly larger than the outer diameter of the ball bearing 28 (see FIG. 3). ing. As a result, the armature shaft 24 having the ball bearing 28 can pass through the connector main body 51 when the rear wiper motor 10 is assembled.

  A contact plate support 51d is integrally provided on the opposite side of the through hole 51c to the connector connection portion 52, and the contact plate support 51d extends from the surface 51a of the connector body 51 in the axial direction of the armature shaft 24. It protrudes. Three contact plates CP1 to CP3 are attached to the contact plate support portion 51d, and each contact plate CP1 to CP3 is respectively from one side in the short direction of the connector main body 51 (downward direction in FIGS. 8 to 10). It is designed to be inserted and fixed.

  A ground terminal ET is mounted between the through hole 51c and the contact plate support 51d. The ground terminal ET is inserted and fixed from the other side of the connector body 51 in the short direction (upward direction in FIGS. 8 to 10). Here, the ground terminal ET is electrically connected to the motor side wall 35a (see FIG. 6) of the gear case 31 under the assembled state of the rear wiper motor 10.

  A pair of female terminals (connector unit terminals) TM2 through which a drive current from an external connector flows is provided on the connector connecting portion 52 side of the through hole 51c. The proximal end side of each male terminal TM1 whose distal end side is exposed in the connector connecting portion 52 is electrically connected to the proximal end side of each female terminal TM2 by spot welding or the like. In the assembled state of the rear wiper motor 10, each brush holder side male terminal TM3 (see FIG. 11) provided in the brush holder 70 is inserted into the distal end side of each female terminal TM2.

  Here, each brush holder side male terminal TM3 is inserted and electrically connected to each female terminal TM2 from the back surface 51b side of the connector main body 51. Each brush holder-side male terminal TM3 of the brush holder 70 is connected to each female terminal TM2 from a direction intersecting (orthogonal) with the connection direction of the external connector to the connector connecting portion 52. This prevents loosening of the electrical connection between each brush holder-side male terminal TM3 and each female terminal TM2 when the external connector is connected to the connector connecting portion 52.

  A pair of jumper wires JP are mounted between the contact plates CP1 to CP3 and the ground terminal ET of the connector main body 51 and the male terminals TM1 and female terminals TM2 so as to straddle the through holes 51c. Has been. One end side of each jumper wire JP is electrically connected to any two of each male terminal TM1 and each female terminal TM2 by spot welding or the like, and the other end side of each jumper wire JP is connected to each contact. It is electrically connected to any two of the plates CP1 to CP3 and the ground terminal ET by spot welding or the like.

  As shown in FIG. 10, an insertion convex portion 51e to be inserted into a hollow portion 35c provided in the gear case 31 is provided on the distal end side in the housing direction along the short direction of the connector main body 51, that is, on the lower side in the figure of the through hole 51c. Are provided integrally. The insertion protrusion 51e protrudes in the direction of accommodation in the gear case 31, and the length dimension of the insertion protrusion 51e along the longitudinal direction of the connector main body 51 is determined by the positioning protrusions 34f provided on the bottom 31a side of the gear case 31. The distance is approximately the same as the distance between them. Thereby, the insertion convex part 51e is engaged with the hollow part 35c without rattling.

  Tapered portions 51f are respectively provided on the distal end side in the accommodation direction of the insertion convex portion 51e and on both end sides along the longitudinal direction of the insertion convex portion 51e. Each taper portion 51f guides the engaging operation of the insertion convex portion 51e to the recess portion 35c, and when the connector unit 50 is housed in the connector unit housing portion 35, it comes into sliding contact with each positioning projection 34f. It is like that. As a result, the connector unit 50 can be easily positioned at the normal position of the connector unit housing portion 35 even in the assembly work by the operator's hand. However, the tapered portion is not limited to being provided only in the insertion convex portion 51e, and may be provided in both the insertion convex portion 51e and the recess portion 35c, or may be provided only in the recess portion 35c.

  A connector-side connection guide hole 51g is adjacent to the through-hole 51c on the contact plate support 51d side of the through-hole 51c of the connector main body 51 and on the rear end side in the accommodation direction along the short direction of the connector main body 51. Is provided. Here, the connector-side connection guide hole 51g constitutes a guide recess in the present invention, and is disposed at a position (offset position) that is shifted from the central axis of the through hole 51c. The connector side connection guide hole 51g is provided penetrating along the thickness direction of the connector body 51, and the cross-sectional shape of the connector side connection guide hole 51g is a substantially square shape with corners chamfered in an arc shape. Is formed.

  When the rear wiper motor 10 is assembled, the holder side connection guide protrusion 71c (see FIG. 11) of the brush holder 70 is inserted into the connector side connection guide hole 51g, whereby the brush holder with respect to the brush holder housing portion 34 is inserted. 70 mis-assembly is prevented. Here, the incorrect assembly of the brush holder 70 refers to, for example, that the brush holder 70 is assembled to the brush holder housing 34 in a state where the brush holder 70 is inverted from the correct state.

  The connector connecting portion 52 includes a bottom wall portion 52a and a side wall portion 52b. On the opposite side of the connector connecting portion 52 from the bottom wall portion 52a side, a connection opening 52c serving as a side to which an external connector is connected is provided. ing. That is, the bottom wall portion 52a is provided on the opposite side of the connector connection portion 52 to the side to which the external connector is connected, and the bottom wall portion 52a is provided at the bottom of the connector support portion 35d as shown in FIG. It is supported by the wall 35e. Further, a part of the side wall part 52b of the connector connection part 52 is supported by a part of the side wall part 35f of the connector support part 35d via each support protrusion 52d.

  A plurality of male terminals TM1 are embedded in the connector connecting portion 52 by insert molding so as to extend to the connector main body portion 51. The distal end side of each male terminal TM1 is exposed in the connector connecting portion 52, and thereby, a plurality of female terminals (not shown) on the external connector side are electrically connected to the distal end side of each male terminal TM1. Connected.

  By forming the connector unit 50 in this way, when the rear wiper motor 10 is assembled, each brush holder of the brush holder 70 is connected to each female terminal TM2 from the motor unit 20 side of the connector unit 50 (see FIG. 9). The side male terminal TM3 (see FIG. 11) is electrically connected, and the contact plates CP1 to CP3 are connected to the switching plate 32c (see FIG. 7) on the gear portion 30 side (see FIG. 8) of the connector unit 50. The tip side comes into contact.

  11 is a perspective view of the brush holder as viewed from the gear portion side, FIG. 12 is a perspective view of the brush holder as viewed from the motor portion side, and FIG. 13 is a partial sectional view taken along line EE in FIG. ing.

  As shown in FIGS. 11 to 13, the brush holder 70 is formed into a predetermined shape by injection molding a resin material such as plastic, and a base portion 71 formed in a substantially oval shape, and an outer peripheral portion of the base portion 71. And an outer peripheral wall portion (outer peripheral wall) 72 extending in the axial direction of the armature shaft 24. The outer peripheral wall portion 72 includes a pair of flat wall portions 72 a that are substantially flat in the circumferential direction of the base portion 71 and a pair of curved wall portions 72 b and 72 c that are substantially curved in the circumferential direction of the base portion 71. And. The flat wall portions 72 a and the curved wall portions 72 b and 72 c are arranged to face each other with the base portion 71 as the center. Here, in FIGS. 11 and 12, the conductive members (electrical parts) are shaded in order to make the explanation of the components easy to understand.

  The outer peripheral wall portion 72 of the brush holder 70 has a tapered shape toward the accommodation direction (left side in the drawing) of the brush holder 70 with respect to the brush holder accommodation portion 34. Specifically, the distance between the flat wall portions 72a is T1 on the front end side (left side in the drawing) of the brush holder 70, and on the rear end side (right side in the drawing) of the brush holder 70. T2 is slightly larger than T1 (T1 <T2). The distance between the curved wall portions 72b and 72c is also the same magnitude relationship as the distance between the flat wall portions 72a, and the brush holder 70 is tapered toward the accommodation direction.

  Thus, by making the brush holder 70 taper toward the accommodation direction, each flat wall portion 72 a and each curved wall portion 72 b, 72 c (outer peripheral wall portion 72) are in the radial direction of the armature shaft 24. Each of them has an inclined surface inclined by 2.0 ° (see FIG. 14). Therefore, the brush holder 70 is guided by the arc-shaped wall portions 34a and 34b and the linear wall portions 34c when the brush holder 70 is accommodated in the brush holder accommodating portion 34, and one curved wall portion 72b is The arcuate wall 34a, the other curved wall 72c abuts the other arcuate wall 34b, and each flat wall 72a abuts against each linear wall 34c by surface contact, and comes into close contact with each other. (See FIG. 13). That is, even in an assembly operation by an operator's hand, the brush holder 70 can be easily accommodated in the brush holder accommodating portion 34, and the brush holder 70 can be accurately positioned at the regular position of the brush holder accommodating portion 34. It has become.

  A through hole 71a through which the armature shaft 24 (see FIG. 1) passes is formed in a substantially central portion of the base portion 71. Here, the through hole 71a constitutes the brush holder through hole in the present invention, and the inner diameter of the through hole 71a is set to be slightly larger than the outer diameter of the ball bearing 28 (see FIG. 3). ing. As a result, the armature shaft 24 having the ball bearing 28 can pass through the base portion 71 when the rear wiper motor 10 is assembled.

  As shown in FIGS. 11 and 13, a housing wall 71b for housing a varistor VS as an electrical component is integrally provided on the connector unit 50 side of the base 71 and on the curved wall 72b side of the through hole 71a. ing. Here, the accommodating wall portion 71b constitutes an engaged portion in the present invention, and projects outward from the curved wall portion 72b. And the accommodation wall part 71b enters into the recessed part 34d (refer FIG. 5) formed in the circular arc-shaped wall part 34a at the time of accommodation to the brush holder accommodation part 34 of the brush holder 70, and is engaged therewith. .

  A holder-side connection guide protrusion 71c is integrally provided on the connector unit 50 side of the base portion 71, on the curved wall portion 72c side of the through hole 71a, and on the upper side in the drawing from the central axis of the through hole 71a. Yes. Here, the holder side connection guide protrusion 71c constitutes a guide convex portion in the present invention, and is disposed at a position (offset position) that is deviated from the central axis of the through hole 71a. The holder-side connection guide protrusion 71c is tapered toward the connector unit 50, and the cross-sectional shape thereof is substantially the same as the connector-side connection guide hole 51g, with corners chamfered in an arc shape. It is formed in a square shape.

  Thereby, when the brush holder 70 is accommodated in the brush holder accommodating portion 34 in a correct state, the holder side connection guide protrusion 71c enters the nectar side connection guide hole 51g, and finally the root of the holder side connection guide protrusion 71c. Is fitted in the connector-side connection guide hole 51g. Here, for example, when the brush holder 70 is turned upside down, that is, in an incorrect state, the brush holder 70 faces the brush holder accommodating portion 34, the holder side connection guide protrusion 71 c and the connector side connection guide toward the accommodation direction of the brush holder 70. The hole 51g does not oppose, so the brush holder 70 cannot be accommodated in the brush holder accommodating portion 34. In this way, erroneous assembly of the brush holder 70 is prevented.

  Here, the protrusion amount L1 of the holder side connection guide protrusion 71c from the base portion 71 is larger than the protrusion amount L2 of each brush holder side male terminal TM3 from the base portion 71 (L1> L2). Thereby, even if the brush holder 70 is mistakenly assembled to the brush holder accommodating portion 34, the tip end portion of each brush holder side male terminal TM3 does not contact the back surface 51b of the connector unit 50. The mold terminal TM3 can be protected from breakage and the like.

  A total of four positioning recesses 71 d are integrally provided on the opposing surface 71 i facing the gear case 31 on the connector unit 50 side of the base portion 71, that is, on the distal end side along the housing direction of the brush holder 70 in the gear case 31. . The positioning recesses 71d are arranged so as to face each other with the center portion (through hole 71a) of the facing surface 71i interposed therebetween, and each flat wall portion 72a and each curved wall portion forming the outer peripheral wall portion 72 of the four corners of the base portion 71. 72b and 72c are provided at respective connecting portions. By arranging the positioning recesses 71d at the four corners of the base portion 71 in this way, when the brush holder 70 is accommodated in the brush holder accommodating portion 34, the positioning recesses 71d and the positioning projections 34f of the brush holder accommodating portion 34 However, it is made to oppose toward the accommodation direction of the brush holder 70. FIG. However, it is not necessary to provide four positioning recesses 71d similarly to the positioning projections 34f, and it is sufficient to provide at least two so as to face each other with the central portion of the facing surface 71i interposed therebetween.

  Each positioning recess 71d is formed of a bottom surface SF3 facing in the axial direction of the armature shaft 24 and a pair of inner side surfaces SF4 facing in the radial direction of the armature shaft 24. The bottom surface SF3 is formed by a part of the facing surface 71i of the base portion 71, and each inner surface SF4 is formed by a protruding wall 71e formed in a substantially L shape protruding from the facing surface 71i to the connector unit 50 side. Yes.

  Accordingly, when the brush holder 70 is accommodated in the brush holder accommodating portion 34, as shown in FIG. 13, the positioning protrusions 34f enter the positioning recesses 71d and engage with each other. When the positioning protrusions 34f are engaged with the positioning recesses 71d, the bottom surface SF3 comes into contact with the front end surface SF1 and the inner side surfaces SF4 come into contact with the outer side surfaces SF2, respectively, and the backlash of the brush holder 70 with respect to the gear case 31 is suppressed.

  Here, as shown in FIG. 11, a guide taper 71f is provided on the tip side of each protruding wall 71e forming each positioning recess 71d. Each guide taper 71f guides the engaging operation of each positioning protrusion 34f to each positioning recess 71d. Thereby, the brush holder 70 can be easily accommodated in the regular position of the brush holder accommodating portion 34, and the positional accuracy of each power supply brush 25 b with respect to the gear case 31 is improved. Therefore, the generation of magnetic noise can be reduced while suppressing the variation in motor characteristics due to the advance angle variation. However, the guide taper is not limited to being provided only on the distal end side of each protruding wall 71e, and may be provided on both the distal end side of each protruding wall 71e and the distal end side (front end surface SF1 side) of each positioning projection 34f. You may provide only in the front end side of each positioning protrusion 34f.

  A pair of brush holder-side male terminals (brush holder terminals) TM3 is provided on the housing wall 71b side of the base portion 71 adjacent to the varistor VS. Each brush holder-side male terminal TM3 penetrates the base portion 71 in the axial direction of the armature shaft 24 and is fixedly inserted into the base portion 71. The distal end side of each brush holder-side male terminal TM3 is disposed on the connector unit 50 side of the base 71 as shown in FIG. 11, and the proximal end side of each brush holder-side male terminal TM3 is as shown in FIG. The base portion 71 is disposed on the motor portion 20 side.

  As shown in FIG. 11, the varistor VS and one side of a pair of choke coils CC as electrical components are electrically connected to the connector unit 50 side of each brush holder side male terminal TM3. One choke coil CC is provided on the base portion 71 and the other choke coil CC is provided on one flat wall portion 72a so that each choke coil CC does not cross the through hole 71a.

  As shown in FIG. 12, a capacitor CD as an electric component is electrically connected to the motor unit 20 side of each brush holder side male terminal TM3, and each brush holder side male terminal TM3 is connected to the capacitor CD. In addition, the holder-side first ground terminal ET1 is also electrically connected. Here, the holder-side first ground terminal ET1 constitutes an engaged portion in the present invention, and when the brush holder 70 is accommodated in the brush holder accommodating portion 34, the concave portion 34d formed in the arc-shaped wall portion 34a. (Refer to FIG. 5) It is inserted into the brush holder housing 34 and is electrically connected.

  As shown in FIG. 12, a pair of power supply brushes 25b and a circuit breaker CB as an electrical component are disposed on the motor unit 20 side of the base 71 and on the curved wall 72c side of the through hole 71a. Each power supply brush 25b is movably held by a pair of brush boxes 71g provided integrally with the base portion 71, and the circuit breaker CB is a holding claw 71h provided integrally between the brush boxes 71g of the base portion 71. Is held in.

  As shown in FIGS. 11 and 12, the other side of one choke coil CC is electrically connected to one power supply brush 25b via a circuit breaker CB, and the other side of the other choke coil CC is connected to the other power supply. It is electrically connected to the brush 25b. A holder-side second ground terminal ET2 is also electrically connected to the circuit breaker CB, and the holder-side second ground terminal ET2 constitutes an engaged portion in the present invention. That is, the holder-side second ground terminal ET2 is engaged and positioned with the stepped portion 34e (see FIG. 5) of the brush holder accommodating portion 34 in the accommodated state of the brush holder 70 in the brush holder accommodating portion 34. It is electrically connected to the portion 34e. Thereby, the drive current from the external connector is supplied from each brush holder side male terminal TM3 to each power supply brush 25b.

  Next, the assembly procedure of the rear wiper motor 10 formed as described above will be described in detail with reference to the drawings. FIG. 14 is an explanatory diagram for explaining the procedure for housing the connector unit and the brush holder in the gear case, FIG. 15 is a perspective view of the gear case housing the connector unit viewed from the motor unit side, and FIG. Explanatory drawing explaining the connection procedure of each is represented.

[Preparation process (first process)]
First, as shown in FIG. 14, a gear case 31 (see FIGS. 5 and 6) cast and molded in another manufacturing process, a connector unit 50 (see FIGS. 8 to 10) and a brush holder 70 (see FIGS. 8 to 10) assembled in another assembling process. 11 to 13) are prepared. Further, after the connector unit 50 and the brush holder 70 are assembled, the worm wheel 32, the motion conversion mechanism 40, the stopper plate 60, the motor unit 20 and the like (see FIG. 1) to be assembled to the gear case 31 are prepared.

[Connector unit accommodation step (second step)]
Following the preparation process, the process proceeds to the connector unit accommodation process. In the connector unit housing step, first, the connector unit 50 is positioned on the mounting opening 31c side (the upper side in the drawing) of the gear case 31. At this time, the insertion convex portion 51e of the connector unit 50 faces the connector unit housing portion 35 while facing the mounting opening portion 31c of the gear case 31. Thereafter, as indicated by a broken line arrow (1) in the figure, the connector unit 50 is gradually moved toward the gear case 31 by an operator's hand or an assembly device (none of which is shown), and the connector unit 50 is moved to the connector unit. It accommodates in the accommodating part 35. FIG. Here, the housing direction of the connector unit 50 in the connector unit housing portion 35, that is, the direction of the broken line arrow (1) constitutes one direction in the present invention.

  Here, the connector main body 51 is housed in the connector unit housing portion 35. The front surface 51a and the back surface 51b of the connector main body portion 51, and the motor side wall portion 35a and the gear side wall portion 35b of the connector unit housing portion 35 are The inclined surface is inclined by 1.5 °, and this functions as a guide for accommodation work. That is, even if the connector unit 50 is slightly displaced in the axial direction of the armature shaft 24 (left and right direction in the drawing) with respect to the gear case 31, the connector unit 50 is in the process of accommodating with respect to the connector unit accommodating portion 35. It is automatically positioned at the normal position. Thereby, the connector unit 50 can be easily accommodated in the connector unit accommodating portion 35.

  In the latter half of the operation of housing the connector unit 50 in the connector unit housing portion 35, the insertion convex portion 51e is guided between the taper portions 51f provided on the insertion convex portion 51e and formed between the positioning protrusions 34f. It is inserted into the recess 35c. Furthermore, the bottom wall portion 52a of the connector connection portion 52 is supported by the bottom wall portion 35e (see FIGS. 1 and 5) of the connector support portion 35d, and the side wall portion 52b of the connector connection portion 52 is interposed through each support protrusion 52d. Are supported by the side wall portion 35f (see FIGS. 1 and 5) of the connector support portion 35d. Thereby, even if the connector unit 50 is slightly inclined with respect to the gear case 31 in the circumferential direction of the armature shaft 24, the connector unit 50 is automatically in the normal position with respect to the connector unit housing portion 35 during the housing operation. Is positioned. Thereby, the connector unit 50 can be easily accommodated in the connector unit accommodating portion 35.

  Further, in the latter half of the work of housing the connector unit 50 in the connector unit housing part 35, the ground terminal ET provided on the connector unit 50 is electrically connected while being in sliding contact with the motor part side wall part 35a.

  Thus, the connector unit 50 is accommodated in the connector unit accommodating portion 35, and the contact plates CP1 to CP3 of the connector unit 50 are connected to the female terminals TM2 of the connector unit 50 on the worm wheel 32 side (see FIG. 1). The connection side (right side in the figure) is arranged on the brush holder 70 side. Thereby, a connector unit accommodation process is completed.

  Here, since the back surface 51b side (motor unit 20 side) of the connector unit 50 is a substantially smooth surface without protruding terminals, the direction of assembly of the connector unit 50 to the connector unit housing portion 35 is easily understood. However, the shape of the brush holder accommodating portion 34 can be simplified.

[Brush holder housing step (third step)]
Subsequent to the connector unit accommodation process, the process proceeds to the brush holder accommodation process. In the brush holder accommodation step, first, the brush holder 70 is positioned on the motor unit 20 side (right side in the drawing) of the gear case 31. At this time, the side from which the holder side connection guide protrusion 71c of the brush holder 70 and each brush holder side male terminal TM3 protrude is made to face the opening of the brush holder accommodating portion 34. Thereafter, from the direction shown by the broken line arrow (2) in FIGS. 11, 14, and 15 in the direction intersecting (orthogonal) with the housing direction of the connector unit 50 shown by the broken line arrow (1) in FIG. Thus, the brush holder 70 is gradually moved toward the gear case 31, and the brush holder 70 is accommodated in the brush holder accommodating portion 34. Here, the accommodation direction of the brush holder 70 in the brush holder accommodation portion 34, that is, the direction of the broken line arrow (2) constitutes the other direction in the present invention.

  At this time, the brush holder 70 is prevented from being in an incorrect state in which the brush case 70 is reversed in the vertical direction from the correct state. Here, the holder side connection guide protrusion 71c is at an offset position shifted from the central axis of the through hole 71a (see FIG. 11), and, as shown in FIG. 15, the connector side of the connector unit 50 accommodated in the gear case 31. Since the connection guide hole 51g can be seen from the opening of the brush holder accommodating portion 34, erroneous assembly can be reliably prevented.

  Furthermore, as shown in each broken-line circle in FIG. 14, the housing wall 71b, the holder-side first ground terminal ET1 and the recess 34d are aligned, and the holder-side second ground terminal ET2 and the stepped portion 34e are aligned. Therefore, these can be easily confirmed by visual observation or the like by an operator before the brush holder 70 is accommodated in the brush holder accommodating portion 34, and as a result, erroneous assembly can be prevented more reliably. In addition, the partial enlarged view shown in each broken-line circle of FIG. 14 shows the engagement relationship between the housing wall 71b, the holder-side first ground terminal ET1, and the recess 34d in a state where the brush holder 70 is mounted on the brush holder housing 34. And the engagement relationship of the holder side 2nd earthing terminal ET2 and the level | step-difference part 34e is shown, and it is the figure seen from the direction of the broken-line arrow (2).

  The brush holder 70 is accommodated in the brush holder accommodating portion 34. The outer peripheral wall portion 72 of the brush holder 70, the arc-shaped wall portions 34a and 34b, and the linear wall portions 34c of the brush holder accommodating portion 34 are: Each of the inclined surfaces is inclined by 2.0 °, and this functions as a guide for accommodation work. That is, even if the brush holder 70 is slightly displaced in the radial direction (vertical direction in the figure) of the armature shaft 24 with respect to the gear case 31 or is slightly inclined in the circumferential direction of the armature shaft 24, the brush holder 70 is The holder accommodating portion 34 is automatically positioned at the normal position during the accommodating operation. Thereby, the brush holder 70 can be easily accommodated in the brush holder accommodating portion 34.

  As the operation of housing the brush holder 70 in the brush holder housing portion 34 proceeds, first, the holder side connection guide projection 71c enters the connector side connection guide hole 51g, and then in the gear case 31, each brush holder side male terminal TM3. Are gradually connected to each female terminal TM2. As a result, the brush holder 70 is electrically connected to the connector unit 50, and the drive current from the connector unit 50 can flow to the motor unit 20 via the brush holder 70.

  Here, since each brush holder side male terminal TM3 protrudes in the accommodation direction of the brush holder 70, when it accommodates, what is called "escape" for escaping each brush holder side male terminal TM3 to the gear case 31 is carried out. There is no need to provide in the brush holder accommodating portion 34. Therefore, the shape of the gear case 31 can be simplified.

  In the latter half of the operation of housing the brush holder 70 in the brush holder housing portion 34, the positioning protrusions 34 f of the brush holder housing portion 34 enter the positioning recesses 71 d provided in the base portion 71. At this time, each guide taper 71f (see FIG. 11) of each positioning recess 71d guides the fitting of each positioning projection 34f to each positioning recess 71d, whereby the brush holder 70 is accommodated in the brush holder. The portion 34 is accommodated while being positioned at the normal position easily and accurately.

  Further, in the latter half of the operation of housing the brush holder 70 in the brush holder housing portion 34, the ground terminals ET1 and ET2 provided on the brush holder 70 are slid onto the arcuate wall portions 34a and 34b of the brush holder housing portion 34, respectively. It is electrically connected while touching.

  Thereafter, as shown in FIG. 13, the brush holder 70 is moved until the position of the end portion ES <b> 1 of the brush holder accommodating portion 34 and the position of the end portion ES <b> 2 of the brush holder 70 coincide with the axial direction of the armature shaft 24. Push forward to brush holder housing 34. Accordingly, the bottom surface SF3 (see FIG. 11) of each positioning recess 71d abuts on the tip surface SF1 (see FIG. 5) of each positioning projection 34f, and each inner side surface SF4 (see FIG. 11) of each positioning recess 71d Each of the positioning projections 34f comes into contact with each outer surface SF2 (see FIG. 5), and the housing of the brush holder 70 in the brush holder housing portion 34 is completed.

  Here, by confirming that the position of the end portion ES1 and the position of the end portion ES2 coincide as described above, complete accommodation of the brush holder 70 in the brush holder accommodating portion 34, that is, the brush holder accommodation step is completed. To do. In other words, if the position of the end portion ES1 and the position of the end portion ES2 do not match, it can be determined that the brush holder 70 is erroneously assembled to the brush holder accommodating portion 34. Thereby, the electrical connection between each brush holder-side male terminal TM3 and each female terminal TM2 that cannot be visually observed can be grasped from the outside.

[Motor part connecting step (fourth step)]
Subsequent to the brush holder accommodation step, the process proceeds to the motor unit connection step. In the motor unit connecting step, first, the motor unit 20 (see FIG. 1) in a state where the four magnets 22 are fixed to the motor case 21 and the armature shaft 24 assembled with the commutator 25, the ball bearing 28, and the like is assembled. As shown by a broken line arrow (3) of FIG. 16, the brush holder housing portion 34 of the gear case 31, that is, the gear portion 30 is faced. At this time, the worm gear 24 a side that extends from the motor case 21 of the motor unit 20 is directed toward the brush holder housing 34.

  Then, the worm gear 24a and the ball bearing 28 are inserted into the through hole 71a (see FIG. 11) of the brush holder 70 and the through hole 51c (see FIG. 8) of the connector unit 50. Thereafter, the motor unit 20 is further moved toward the gear case 31, whereby the worm gear 24 a is inserted through the through hole 37 (see FIG. 3) of the gear case 31.

  Here, each of the power supply brushes 25b (see FIG. 12) provided in the brush holder 70 moves from the retracted position to the advanced position with respect to the commutator 25 as the commutator 25 is mounted, thereby the connector unit. 50 and the motor unit 20 are electrically connected via the brush holder 70. Thereafter, the motor part 20 is further moved with respect to the gear case 31, thereby bringing the flange part 21 b of the motor case 21 into contact with the end part ES <b> 1 of the brush holder housing part 34. As a result, the outer ring member 28 b of the ball bearing 28 is fitted into the bearing fitting portion 36. Then, each fastening screw 11 is tightened with a predetermined tightening torque by a fastening tool (such as an electric screwdriver) (not shown) as indicated by a broken arrow (4) in the figure.

  Next, the opening side of the notch 61a in the stopper plate 60 is opposed to the mounting opening 31c of the gear case 31, and the stopper plate 60 is exposed from the radial direction of the armature shaft 24 as indicated by a broken line arrow (5) in the figure. Then, the stopper plate 60 is inserted into the stopper plate insertion portion 38. Then, each insertion support part 62 enters the stopper plate insertion part 38 while each bearing support convex part 61b (refer FIG. 4) contact | abuts to the outer ring member 28b. Thereby, the stopper plate 60 presses the outer ring member 28b while being elastically deformed, and the ball bearing 28 is firmly fixed by the bearing fitting portion 36 (see FIG. 3).

  Here, the amount of insertion of the stopper plate 60 into the stopper plate insertion portion 38 is determined with reference to the central axis of the through hole 37 through which the armature shaft 24 is inserted. A predetermined clearance is formed between the portion and the bottom portion (bottom portion 31 a) of the stopper plate insertion portion 38. Thus, by making the insertion amount of the stopper plate 60 into the stopper plate insertion portion 38 constant with respect to the central axis of the through hole 37, variations in the manufacturing accuracy of the motor portion 20 and other components can be absorbed. I am doing so. Accordingly, the stopper plate 60 can be reliably mounted without being affected by variations in the manufacturing accuracy of the motor unit 20 and other components, and as a result, the assembly of the rear wiper motor 10 can be improved and the ball bearing can be improved. The backlash in the 28 gear cases 31 can be prevented.

  After the stopper plate 60 is mounted on the stopper plate insertion portion 38, the worm wheel 32 is mounted in the gear case 31 from the mounting opening 31c, and the output shaft 33 (see FIG. 1) to which the swing link 41 is fixed is mounted. The gear case 31 is mounted from the opening 31c. Here, as shown in FIG. 7, the side on which the switching plate 32c of the worm wheel 32 is mounted is made to face the contact plates CP1 to CP3.

  Next, the connecting plate 42 and the sliding contact plate 43 (see FIG. 1) are mounted between the swing link 41 and the worm wheel 32 in that order, thereby completing the mounting of each component in the gear case 31. Thereafter, a gear cover is attached to the attachment opening 31c of the gear case 31, and the gear cover is fixed to the gear case 31 via a plurality of fixing screws (not shown). Here, the gear cover does not block the connection opening 52c of the connector connection portion 52. As a result, the sliding contact plate 43 and the connector main body 51 of the connector unit 50 are supported by the gear cover, the motor unit connecting step is completed, and the rear wiper motor 10 is completed.

  As described in detail above, according to the rear wiper motor 10 according to the first embodiment, the connector side connection guide hole 51g is provided at a position shifted from the central axis of the through hole 51c of the connector unit 50, and the brush holder 70 is penetrated. A holder-side connection guide protrusion 71c that enters the connector-side connection guide hole 51g when the brush holder 70 is housed in the brush holder housing portion 34 is provided at a position shifted from the central axis of the hole 71a.

  Thereby, when the brush holder 70 is correctly assembled to the connector unit 50 and the gear case 31, the holder-side connection guide protrusion 71c enters the connector-side connection guide hole 51g, and the brush holder 70 is connected to the connector unit 50 and the gear case 31. Is positioned at the normal position.

  On the other hand, when the brush holder 70 is mistakenly assembled to the connector unit 50 and the gear case 31, the holder-side connection guide protrusion 71c cannot enter the connector-side connection guide hole 51g. It cannot be incorporated into the gear case 31. Therefore, it is possible to reliably prevent the brush holder 70 from being erroneously assembled to the connector unit 50 and the gear case 31.

  Further, according to the rear wiper motor 10 according to the first embodiment, the arc-shaped wall portions 34a and 34b of the brush holder housing portion 34 are respectively provided with the recessed portion 34d and the step portion 34e extending along the housing direction of the brush holder 70. The housing wall 71b that engages with the recess 34d and the step 34e when the brush holder 70 is housed in the brush holder housing 34, the holder side first ground terminal ET1, and the holder side A second ground terminal ET2 was provided.

  Thereby, in addition to the connector side connection guide hole 51g and the holder side connection guide protrusion 71c, the concave portion 34d, the stepped portion 34e and the accommodating wall portion 71b, the holder side first ground terminal ET1, and the holder side second ground terminal ET2 are confirmed. As a result, the assembly directionality can be grasped, and as a result, it is possible to more reliably prevent the brush holder 70 from being erroneously assembled to the connector unit 50 and the gear case 31.

  Next, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 17 is a plan view showing a gear portion of the rear wiper motor according to the second embodiment. In addition, the same code | symbol is attached | subjected about the part which has the same function as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  As shown in FIG. 17, the rear wiper motor (motor device) 80 according to the second embodiment has a position and motion of the output shaft 33 as compared with the rear wiper motor 10 (see FIG. 1) according to the first embodiment. The structure of the conversion mechanism 90 is different.

  The output shaft 33 of the rear wiper motor 80 is disposed on the side opposite to the armature shaft 24 side with the worm wheel 32 of the gear case (casing) 81 interposed therebetween. Thereby, in the rear wiper motor 80, the dimension along the axial direction of the armature shaft 24 can be reduced as compared with the first embodiment.

  The motion conversion mechanism 90 of the rear wiper motor 80 includes a pinion gear 91, a motion conversion member 92, a connecting plate 42, and a sliding contact plate 43. The pinion gear 91 is fixed to the proximal end side of the output shaft 33 and swings with the output shaft 33.

  The motion converting member 92 includes a sector gear 92a that meshes with the pinion gear 91, and an arm portion 92b that is rotatably connected to the eccentric position of the worm wheel 32 via the second connecting pin P2. A first connection pin P <b> 1 is provided in the central portion of the sector gear 92 a, and a connection plate 42 is provided between the first connection pin P <b> 1 and the output shaft 33. Specifically, one end in the longitudinal direction of the connecting plate 42 is rotatably connected to the base end side of the output shaft 33, and the other end in the longitudinal direction of the connecting plate 42 is rotatably connected to the first connecting pin P1. Has been. As described above, the connecting plate 42 according to the present embodiment keeps the distance between the output shaft 33 and the first connecting pin P1 constant, and maintains the engagement between the pinion gear 91 and the sector gear 92a.

  Also in the motion conversion mechanism 90 of the rear wiper motor 80, the rotational motion of the worm wheel 32 is converted into the swing motion of the output shaft 33. Specifically, when the second connecting pin P2 rotates about the wheel shaft 32b with the rotation of the worm wheel 32 (see the two-dot chain line arrow R), the arm portion 92b of the motion conversion member 92 also centers on the wheel shaft 32b. Rotate. As a result, the sector gear 92a swings about the first connecting pin P1, and as a result, the pinion gear 91 that meshes with the sector gear 92a, that is, the output shaft 33 swings (see the two-dot chain line arrow S).

  As described above in detail, the rear wiper motor 80 according to the second embodiment can achieve the same operational effects as those of the first embodiment described above.

  Next, a third embodiment of the present invention will be described in detail with reference to the drawings. FIG. 18 shows a partial cross-sectional view corresponding to FIG. 2 according to the third embodiment. In addition, the same code | symbol is attached | subjected about the part which has the same function as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  As shown in FIG. 18, the motor unit 100 according to the third embodiment includes a motor case 101 having a regular hexagonal cross section, and a plate-like magnet 102 is provided inside each side portion 101 a of the motor case 101. Each is fixed. Each plate-shaped magnet 102 is formed of a neodymium magnet and has a substantially rectangular cross section. The commutator 25 includes nine segments 25a, and the armature core 26 includes nine slots 26a correspondingly.

  Also in the third embodiment configured as described above, the same operational effects as those of the first embodiment described above can be achieved. In addition, in the third embodiment, since each plate magnet 102 is fixed to each side portion 101a, the plane magnets are fixed to each other, and the fixing strength of each plate magnet 102 to the motor case 101 is improved. be able to. Further, since each plate magnet 102 is a neodymium magnet that generates a large magnetic force, it can be made smaller and lighter than the first embodiment using a ferrite magnet.

  Here, the specifications of the motor units 20 and 100 (see FIGS. 2 and 18) in the above-described embodiments, that is, the cross-sectional shape of the motor case, the type of magnet, the number of magnets, the number of segments, the number of slots, and the like can be freely set. Can be set to For example, each plate-like magnet (neodymium magnet) can be adopted instead of each magnet 22 (ferrite magnet) of the motor unit 20.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in each of the above embodiments, the guide concave portion of the present invention is shown as the connector side connection guide hole 51g penetrating in the plate thickness direction of the connector main body 51, but the present invention is not limited to this. For example, when the thickness of the connector main body 51 is large, it may be a fitting recess in which the holder side connection guide protrusion 71c enters and fits without being penetrated.

  Moreover, although both the front surface 51a and the back surface 51b of the connector main-body part 51 were made to incline and the taper shape was shown, this invention is not limited to this, only any one is inclined and each corresponds to this. The walls 35a and 35b may be formed. In short, in order to easily accommodate the connector main body 51, it may be formed in a tapered shape toward the accommodation direction of the connector unit 50.

  Further, in each of the above-described embodiments, the wall portions 34a, 34b, 34c and the outer peripheral wall portion 72 have been formed so as to have a substantially oval cross section, but the present invention is not limited to this. For example, the cross-sectional shapes of the wall portions 34a, 34b, 34c and the outer peripheral wall portion 72 may be formed to be a circular shape or a quadrangular shape, respectively. As the tapered shape in this case, the former is a truncated cone shape and the latter is a quadrangular frustum shape.

  Further, in each of the above embodiments, the inclination angles of the front surface 51a and the back surface 51b of each wall 35a, 35b and the connector main body 51 are set to the same inclination angle 1.5 °, and each wall 34a, 34b, 34c and the outer periphery Although the wall portion 72 has the same inclination angle of 2.0 °, the present invention is not limited to this. For example, the inclination angle of the front surface 51a and the back surface 51b in the connector main body 51 may be set to a large 1.7 °, and the inclination angle of the outer peripheral wall portion 72 may be set to a large 2.2 °. In this case, the connector unit 50 can be accommodated in the connector unit accommodating portion 35 and the brush holder 70 can be accommodated in the brush holder accommodating portion 34 in a press-fitted state, so that the connector unit 50 and the brush holder 70 are not stable in the gear case 31. It can prevent more reliably.

  Further, in each of the above-described embodiments, the brush holder 70 is provided with the positioning recess 71d and the gear case 31 is provided with the positioning projection 34f. However, the present invention is not limited to this, and the concavo-convex relationship may be reversed. good. That is, the positioning protrusions may be provided on the brush holder 70 and the positioning recesses may be provided on the gear case 31.

  In each of the above embodiments, the connector unit 50 is provided with the insertion protrusion 51e and the gear case 31 is provided with the recess 35c. However, the present invention is not limited to this, and the concavo-convex relationship is reversed. Also good. That is, the connector unit 50 may be provided with a recess, and the gear case 31 may be provided with an insertion protrusion.

  Further, in each of the above embodiments, the connector main body 51 and the connector connecting portion 52 of the connector unit 50 are integrally provided so that the connecting direction of the brush holder 70 and the connecting direction of the external connector are orthogonal (90 degrees). However, the present invention is not limited to this, and may be crossed at, for example, 60 degrees according to the shape (wide or narrow) of the mounting space on which the rear wiper motor 10 is mounted.

  Further, in each of the above embodiments, the motor unit 20 in a state in which the magnet 22 is fixed to the motor case 21 and the armature shaft 24 assembled with the commutator 25, the ball bearing 28, and the like is assembled in the motor unit coupling step. However, the present invention is not limited to this, and the armature shaft 24 may face the gear portion 30 in a state where the armature shaft 24 is removed from the motor case 21. As for the assembly order at that time, following the brush holder housing step, the armature shaft 24 assembled with the commutator 25, the ball bearing 28, etc. faces the gear part 30, and the ball bearing 28 reaches the fitting position of the bearing fitting part 36. After the armature shaft 24 is inserted so as to reach, the stopper plate 60 is inserted into the stopper plate insertion portion 38. Thereafter, after the motor case 21 and the gear case 31 are assembled, the worm wheel 32 and the like are assembled to the gear case 31.

  Further, in each of the above-described embodiments, the reduction mechanism (worm reduction device) including the worm gear 24a and the worm wheel 32 is used. However, the present invention is not limited to this, and for example, a planetary gear reduction device as the reduction mechanism. Can also be adopted. In this case, for example, the sun gear may be an input side (armature shaft 24 side) gear, and the ring gear may be an output side (output shaft 33 side) gear.

  In each of the above embodiments, the rear wiper motor 10 is shown as the motor device. However, the present invention is not limited to this, and the power window device, the electric sunroof device, the electric motor mounted in a vehicle such as an automobile are not limited thereto. The present invention can also be applied to a motor device used as a drive source for a sheet device or the like.

10 Rear wiper motor (motor device)
DESCRIPTION OF SYMBOLS 11 Fastening screw 20 Motor part 21 Motor case 21a Insertion hole 21b Flange part 21c Arc part 21d Linear part 22 Magnet 23 Armature 24 Armature shaft (rotation axis)
24a Worm gear 24b Bearing fixing part 25 Commutator (commutator)
25a segment 25b feeding brush (brush)
DESCRIPTION OF SYMBOLS 26 Armature core 26a Slot 26b Armature coil 27 Radial bearing 28 Ball bearing 28a Inner ring member 28b Outer ring member 28c Steel ball 28d Annular cover member 30 Gear part 31 Gear case (casing)
31a bottom 31b wall 31c mounting opening 31d, 31e boss 32 worm wheel 32a gear tooth 32b wheel shaft 32c switching plate 32d recess 32e convex 33 output shaft 34 brush holder housing 34a, 34b arcuate wall (inner peripheral wall)
34c Straight wall (inner wall)
34d Recess (engagement part)
34e Step part (engagement part)
34f Positioning projection 35 Connector unit housing part 35a Motor part side wall part 35b Gear part side wall part 35c Depression part 35d Connector support part 35e Bottom wall part 35f Side wall part 36 Bearing fitting part 37 Through hole 38 Stopper plate insertion part 40 Motion conversion mechanism 41 Oscillating link 42 Connecting plate 43 Sliding contact plate 43a Sliding contact portion 50 Connector unit 51 Connector main body 51a Front surface 51b Back surface 51c Through hole (connector unit through hole)
51d Contact plate support part 51e Insertion convex part 51f Taper part 51g Connector side connection guide hole (guide recessed part)
52 connector connecting part 52a bottom wall part 52b side wall part 52c connection opening part 52d support projection 60 stopper plate 61 support main body part 61a notch part 61b bearing support convex part 61c guide taper 62 inserted part 62a guide taper 70 brush holder 71 base part 71a Through hole (Brush holder through hole)
71b Housing wall (engaged part)
71c Holder-side connection guide protrusion (guide protrusion)
71d Positioning recess 71e Protruding wall 71f Guide taper 71g Brush box 71h Holding claw 71i Opposing surface 72 Outer peripheral wall (outer peripheral wall)
72a Flat wall portion 72b, 72c Curved wall portion 80 Rear wiper motor (motor device)
81 Gear case (casing)
DESCRIPTION OF SYMBOLS 90 Motion conversion mechanism 91 Pinion gear 92 Motion conversion member 92a Sector gear 92b Arm part 100 Motor part 101 Motor case 101a Side part 102 Plate magnet ES1, ES2 Terminal part P1 1st connection pin P2 2nd connection pin CP1-CP3 Contact plate JP Jumper Wire TM1 Male terminal TM2 Female terminal ET Ground terminal TM3 Brush holder side male terminal VS Varistor CB Circuit breaker CC Choke coil CD capacitor ET1 Holder side first ground terminal (engaged part)
ET2 Holder side second ground terminal (engaged part)
SF1 Tip surface SF2 Outer surface SF3 Bottom surface SF4 Inner surface

Claims (3)

A motor device including a connector unit to which an external connector is connected, and a brush holder that holds a brush that is in sliding contact with the commutator,
A casing for individually accommodating the connector unit and the brush holder; and
A connector unit housing portion provided in the casing and housing the connector unit from one direction;
Wherein provided in the casing, the brush holder is housed from the other direction intersecting with the one direction, the brush holder receiving portion in the axial direction the Ru is formed alongside the connector unit housing portion of the rotary shaft, wherein the commutator is fixed When,
Provided in the connector unit, the connector unit through hole prior Machinery rotating shaft penetrates,
A guide recess provided in the connector unit and disposed at a position shifted from a central axis of the connector unit through hole;
A brush holder through hole provided in the brush holder, through which the rotating shaft passes;
A guide protrusion provided in the brush holder, disposed at a position shifted from a central axis of the brush holder through-hole, and entering the guide recess in the casing when the brush holder is housed in the brush holder housing section; ,
A motor device comprising: 2. The motor device according to claim 1, further comprising a motor case that accommodates a part of the rotating shaft together with the casing, and a position of a terminal portion on the motor case side of the brush holder accommodating portion, and the motor of the brush holder. The position of the terminal part in a case side corresponds with respect to the axial direction of the said rotating shaft, The motor apparatus characterized by the above-mentioned. 3. The motor device according to claim 1, wherein an engagement portion extending along an accommodation direction of the brush holder is provided on an inner circumferential wall of the brush holder housing portion, and the brush holder has the engagement portion extending on the outer circumferential wall of the brush holder. A motor device comprising an engaged portion that engages with the engaging portion when housed in the brush holder housing portion.

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