JP4188792B2 - motor - Google Patents

Description

  The present invention relates to a motor having a structure in which connection terminal portions respectively provided in two members are connected to each other when the members are assembled.

  Generally, a wiper motor mounted on a vehicle is configured by integrally assembling a motor with a speed reduction mechanism, that is, a motor main body and a speed reduction unit that decelerates and outputs the rotation of the motor main body. That is, the motor body is configured such that an armature having a rotating shaft and a commutator is rotatably accommodated in a bottomed cylindrical yoke housing, and the rotating shaft projects into the speed reduction portion. The speed reduction portion includes a speed reduction mechanism that reduces the rotation of the rotary shaft and transmits it to the output shaft in the housing recess in the gear housing, and a plate cover that closes the housing recess is mounted in the opening of the housing recess. Become.

  A brush holder device that holds a brush for slidingly contacting the commutator and supplying power to the armature is fixed to a portion of the gear housing that faces the opening of the yoke housing. The plate cover that closes the housing recess of the gear housing is integrally provided with a power supply connector that is connected to the vehicle body side connector extending from the vehicle body side and receives power supply from the vehicle body side. Then, the power supply connector and the brush are electrically connected using some connecting means, and the drive power is supplied to the brush from the power supply connector.

For example, in Patent Document 1, a brush-side terminal (a brush-side terminal piece in the literature) in which one end is electrically connected to a brush and a female connection terminal portion is formed on the other end is a brush holder device (a brush in the literature). A male connection terminal portion (power source side terminal in the literature) provided on the side of the plate cover (case cover in the literature) and a gear housing (in the literature) At the same time that the plate cover is mounted on the case frame), the male connection terminal portion is fitted into the female connection terminal portion of the brush-side terminal so that they are electrically connected to each other.
JP-A-8-275441

  However, since the fitting input of the male connection terminal portion on the plate cover side is received by the female connection terminal portion of the brush side terminal, the posture of the brush holder device provided with the brush side terminal changes, and the brush holder device In some cases, the motor may be inclined with respect to the axial direction of the motor. Then, the contact state between the brush held by the brush holder device and the commutator is changed due to such a change in the posture of the brush holder device, which causes generation of abnormal noise during brush sliding contact.

  In many cases, the brush holder device is fixed in a floating state by an anti-vibration rubber (grommet) so that vibration generated when the brush slides is not transmitted to the outside of the holder. Therefore, the posture change of the brush holder device described above is particularly likely to occur, and there is a concern about the occurrence of the above problem.

  The present invention has been made in view of such circumstances, and the object thereof is to prevent a change in posture of the brush holder device even when a fitting connection force acts on a connection terminal portion provided in the brush holder device, An object of the present invention is to provide a motor capable of preventing a change in contact state between a brush and a commutator held by the brush holder device.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a motor body provided with an armature having a rotating shaft and a commutator, and a brush that slides on the commutator and supplies driving power to the armature. A brush holder device provided with a first connection terminal portion that is held and electrically connected to the brush, and is assembled integrally with the motor body, and the rotation of the rotating shaft is decelerated and transmitted to the output shaft. A gear housing having a gear housing recess for housing the speed reduction mechanism, and a power feeding connector for receiving the supply of the driving power from the outside, with respect to a power feeding side terminal provided in the power feeding connector A second connection terminal portion that is in an electrical connection state, and a plate cover that is mounted on the gear housing to close the opening of the gear housing recess, The first connection terminal portion is disposed in said gear housing recess, said plate cover simultaneously with the attachment to the gear housing, and the first connection terminal portion and the second connecting terminal portions of the plate cover A motor having a structure that is fitted and connected in the mounting direction to the gear housing, wherein the brush holder device is provided with a terminal support portion that supports the first connection terminal portion provided in the brush holder device, At least one of the gear housing and the brush holder device on the side opposite to the plate cover where the first connection terminal portion and the second connection terminal portion are fitted and connected , and the first connection terminal portion and engaging said terminal support portion provided in the brush holder device at the time of fitting connection between the second connection terminal portion for holding the posture of the brush holder device That energize holding portion is formed as its gist.

  The gist of the invention according to claim 2 is that, in the motor according to claim 1, the brush holder device is fixed to the gear housing via a floating support member made of an elastic material. .

According to a third aspect of the present invention, in the motor according to the first or second aspect, the posture holding portion is provided in the gear housing, and the fitting connection between the first connection terminal portion and the second connection terminal portion is provided. The gist is to maintain the posture of the brush holder device by engaging with the terminal support provided in the brush holder device.
According to a fourth aspect of the present invention, there is provided the motor according to the third aspect , wherein the posture holding portion is provided in the gear accommodating recess in the gear housing.

The gist of the invention according to claim 5 is that, in the motor according to claim 4 , the posture holding portion has a shape along a direction in which the gear receiving recess is provided.
A sixth aspect of the present invention is the motor according to the fourth or fifth aspect , wherein the posture holding portion is composed of a pair of ribs erected in a plate shape in the gear receiving recess. And

According to a seventh aspect of the present invention, in the motor according to any one of the third to sixth aspects, the terminal support portion is made of an insulating material, and is provided between the first connection terminal portion and the posture holding portion. The gist is that it is interposed.
The gist of an eighth aspect of the invention is that the motor according to any one of the first to seventh aspects is a wiper motor for driving a vehicle wiper device.
(Function)
According to the first aspect of the present invention, the motor is a brush that is electrically connected to the brush at the same time that the plate cover that closes the opening of the gear housing recess of the gear housing is attached to the gear housing. The first connection terminal portion on the holder device side and the second connection terminal portion on the plate cover side in an electrically connected state with respect to the power supply side terminal provided in the power supply connector are in the mounting direction of the plate cover to the gear housing. It has a structure to be fitted and connected. At least one of the gear housing and the brush holder device on the side opposite to the plate cover where the first connection terminal portion and the second connection terminal portion are fitted and connected , the first connection terminal portion and the second connection terminal posture holding portion to engage with the terminal support portion provided in the brush holder device for holding the posture of the brush holder device is formed at the time of fitting connection with the parts. When fitting connected to the first connection terminal portion and the second connecting terminal portion, the insertion force is to act on the first connection terminal portion is the attitude of the first connection terminal portion attempts to change, the first connection terminal The change in the posture of the part also changes the posture of the brush holder device . In the present invention, at the time of fitting connection between the first connection terminal portion and the second connection terminal portion, the posture holding portion engages with the terminal support portion provided in the brush holder device to hold the posture of the brush holder device. A change in the posture of the brush holder device is prevented, and a change in the contact state between the brush and the commutator held by the brush holder device is prevented.

  According to the invention described in claim 2, the brush holder device is fixed to the gear housing via the floating support member made of an elastic material. That is, since the posture of the brush holder device is easily changed with respect to the gear housing, the effect of preventing the posture change of the brush holder device by providing the posture holding portion to prevent the posture change of the first connection terminal portion is great. is there.

According to the fourth aspect of the present invention, the posture holding portion is provided in the gear housing recess in the gear housing. That is, since the posture holding portion only needs to be provided on the gear housing side, the posture holding portion can be easily formed. In addition, since the posture holding portion is provided in the gear receiving recess, the posture holding portion can be formed simultaneously with the gear receiving recess.

  According to the fifth aspect of the present invention, the posture holding portion has a shape along the direction in which the gear housing recess is formed. Therefore, the posture holding portion can be formed at the same time as the gear housing recess is formed by the molding die.

  According to the sixth aspect of the present invention, the posture holding portion is composed of a pair of ribs erected in a plate shape in the gear housing recess. Therefore, the rib has a simple shape and can be easily formed. In addition, the rib can contribute to reinforcing the configuration in the gear housing recess due to its nature.

According to the seventh aspect of the present invention, the terminal support portion provided in the brush holder device is made of an insulating material and is interposed between the first connection terminal portion and the posture holding portion. That is, the first connection terminal portion does not directly contact the gear housing by the terminal support portion. Therefore, when the gear housing is made of metal, a short circuit between the first connection terminal portion and the gear housing is prevented at the terminal support portion made of an insulating material, and the first connection terminal portion and the posture holding portion are extremely close to each other. Can be arranged.
According to the eighth aspect of the present invention, since the change of the contact state between the brush and the commutator held by the brush holder device is prevented, the generation of noise from between the brush and the commutator is prevented, and the vehicle The operation sound of the wiper motor for driving the wiper device can be suppressed to a low level. For this reason, a wiper motor that wipes windshield glass (front glass) is generally provided near the driver's seat. Thus, the operation noise of the wiper motor can be suppressed to a low level, thereby causing driver discomfort. Giving is prevented.

  According to the present invention, even when a fitting connection force is applied to the connection terminal portion provided in the brush holder device, the posture of the brush holder device is prevented from changing, and the contact state between the brush and the commutator held by the brush holder device is achieved. Thus, it is possible to provide a motor capable of preventing the change.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
A wiper motor 1 shown in FIGS. 1 and 2 is used as a drive source of a vehicle wiper device that wipes raindrops and the like adhering to a windshield glass (front glass) of a vehicle. The wiper motor 1 includes a motor body 2 and a speed reduction unit 3.

  The yoke housing 4 constituting the motor body 2 is made of a conductive metal material and is formed in a substantially bottomed cylindrical shape. A plurality of magnets 5 are fixed to the inner peripheral surface of the yoke housing 4, and an armature 6 is rotatably accommodated inside each magnet 5. A thrust bearing 8 and a radial bearing 9 that rotatably support the base end portion of the rotating shaft 7 of the armature 6 are provided at the bottom of the yoke housing 4. A gear housing 10 of the speed reduction unit 3 that covers the distal end side of the rotating shaft 7 on which the worm 7 a is formed is assembled to the opening 4 a of the yoke housing 4 with screws 11.

  The gear housing 10 is made of a metal such as an aluminum alloy, and has an opening recess 10 a having substantially the same shape as the opening 4 a of the yoke housing 4. The gear housing 10 is formed with a gear housing recess 10b for housing a speed reduction mechanism including the worm 7a of the rotating shaft 7 and the worm wheel 12 (see FIGS. 4 and 8). A radial bearing 13 that rotatably supports an intermediate portion of the rotating shaft 7 is fixed to a predetermined portion in the gear housing recess 10b, and a bearing portion 10c that rotatably supports the tip of the rotating shaft 7 is formed. ing. A worm 7 a is located between the bearing 13 and the bearing portion 10 c, and the worm 7 a is engaged with the worm wheel 12. The worm wheel 12 is drivingly connected to an output shaft 14 arranged in parallel to a direction orthogonal to the direction of the axis L1 of the rotary shaft 7 (wiper motor 1).

  Further, the gear housing 10 is provided with a plate cover 15 as shown in FIG. 5 for closing the opening 10d of the gear receiving recess 10b as shown in FIG. Incidentally, as for the plate cover 15 shown in FIG. 5, the inner surface 15a side has faced the paper surface side. The plate cover 15 is integrally provided with a power feeding connector 16 that is connected to a vehicle body side connector (not shown) extending from the vehicle body side and receives a drive power supply from the vehicle body side. When the drive power is supplied from the power supply connector 16, the motor body 2 is rotationally driven, and the rotation of the rotation shaft 7 (worm 7 a) is decelerated and transmitted to the output shaft 14. A wiper arm (not shown) is drivingly connected to the output shaft 14 via a link mechanism (not shown) of a vehicle wiper device. When the output shaft 14 rotates, the wiper arm performs a predetermined wiping operation. It has become.

  As shown in FIG. 3, a brush holder device 21 is assembled in the opening recess 10 a facing the yoke housing 4 of the gear housing 10. The brush holder device 21 includes a substantially annular base plate 22. The base plate 22 is formed of a thermosetting resin having an insulating property such as a phenol resin. A rotating shaft 7 and a commutator 6 a fixed to the rotating shaft 7 are inserted through the center portion of the base plate 22. The base plate 22 (brush holder device 21) is fixed to the gear housing 10 with two screws 24a and 24b via a floating support member 23 made of vibration-proof rubber (elastic material) mounted at two predetermined locations. Yes. That is, since the brush holder device 21 is fixed to the gear housing 10 by the floating support member 23, vibration generated in the brush holder device 21 by the floating support member 23 is suppressed from being transmitted to the gear housing 10 side. The

  On one side surface (surface on the side of the yoke housing 4) 22a of the base plate 22, three brush holders (first to third brush holders) 25a to 25c having a substantially rectangular tube shape have a predetermined angle in the circumferential direction of the plate 22 It is fixed with an interval. The first brush holder 25a and the second brush holder 25b are arranged at positions facing each other with the rotation shaft 7 interposed therebetween, and the third brush holder 25c is shifted from the second brush holder 25b by a predetermined angle in the circumferential direction of the base plate 22. Is arranged. The brush holders 25a to 25c accommodate and hold a substantially square columnar common brush 26a, a low-speed driving brush 26b, and a high-speed driving brush 26c that are slidably held toward the commutator 6a. Has been. In addition, support pins 22c are projected from positions near the brush holders 25a to 25c on one side surface 22a of the base plate 22, respectively. Each support pin 22c is provided with a torsion spring 27 for urging the brushes 26a to 26c toward the commutator 6a.

  In addition, a circuit breaker 28 for circuit protection is installed on the base plate 22 in the vicinity of the first brush holder 25a in which the common brush 26a is accommodated. The circuit breaker 28 is connected to a pigtail 26d extending from the common brush 26a via a terminal plate 29a whose one connection terminal is fixed to the base plate 22, and a terminal plate 29b whose other connection terminal is fixed to the base plate 22. And is connected to the screw 24b through a body ground.

  The base plate 22 is provided with a coil housing 31 between a second brush holder 25b that houses a low-speed driving brush 26b and a third brush holder 25c that houses a high-speed driving brush 26c. . The coil housing 31 includes one choke coil 32, two brush-side terminals (first and second brush-side terminals) 33 and 34, and a housing case 35 that houses them. The housing case 35 is integrally formed upright on the base plate 22 and protrudes on both sides of the one side surface 22a and the other side surface 22b of the base plate 22 as shown in FIG.

  As shown in FIG. 3, two coil housing portions 35 a and 35 b for housing the choke coil 32 are provided on the side surface 22 a side of the base plate 22 in the housing case 35. The choke coil 32 is housed only in the coil housing portion 35a close to the second brush holder 25b in which the brush 26b is housed. One end of the choke coil 32 is connected to the pigtail 26e extending from the low speed driving brush 26b, and the other end is connected to the first brush side terminal 33. As shown in FIGS. 7 and 8, the first brush side terminal 33 is formed with a female connection terminal portion 33 a as a first connection terminal portion on the other side surface 22 b side of the base plate 22. The female connection terminal portion 33 a is supported by a terminal support portion 35 c provided in the housing case 35.

  On the other hand, as shown in FIG. 3, the choke coil 32 is not housed in the coil housing portion 35b close to the third brush holder 25c in which the high-speed driving brush 26c is housed. Is housed. The second brush side terminal 34 has one end connected to the pigtail 26f extending from the high speed driving brush 26c, the other end extending to the other side 22b side of the base plate 22, and a female connection as a first connection terminal at the other end. A terminal portion 34a is formed. The female connection terminal portion 34a is supported by the terminal support portion 35c. Incidentally, the terminal support portion 35c has a bifurcated shape, and the female connection terminal portions 33a and 34a are respectively arranged correspondingly. The terminal support portion 35c is located radially inward of the female connection terminal portions 33a and 34a, that is, on the support rib 10k side described later.

  Here, as shown in FIGS. 7 and 8, a communication hole 10e communicating with the gear housing recess 10b is formed in the opening recess 10a of the gear housing 10 to which the brush holder device 21 is assembled. The female connection terminal portions 33a and 34a and the terminal support portions 35c that support the female connection terminal portions 33a and 34a protrude from the communication hole 10e into the gear housing recess 10b. Further, as shown in FIGS. 1, 4, 7 and 8, a bearing holding for housing the radial bearing 13 is provided at a predetermined portion of the gear housing recess 10b located below the terminal support portion 35c. The portion 10f is overhanging. The bearing holding portion 10f has a large diameter portion 10g located on the side of the communication hole 10e and a small diameter portion 10h further protruding from the large diameter portion 10g. On the outer peripheral surfaces 10i and 10j of the large-diameter portion 10g and the small-diameter portion 10h, a plate as a posture holding portion is provided at a portion located below the terminal support portion 35c (on the side opposite to the side where the plate cover 15 is disposed). A pair of support ribs 10k are erected over both outer peripheral surfaces 10i and 10j. The width D1 of the support rib 10k is smaller than the width D2 of the terminal support portion 35c. The support rib 10k is formed so as to extend linearly along the axis L1 direction of the rotating shaft 7 and the axis L2 direction of the output shaft 14. Incidentally, the gear receiving recess 10b is also recessed along the axis L2 direction of the output shaft 14. Therefore, the support rib 10k is formed at the same time as the gear receiving recess 10b is formed by the molding die. The terminal support portion 35c is placed on the upper end surface 10l of the support rib 10k as a whole in the direction of the axis L1 of the rotary shaft 7.

  Incidentally, as shown in FIGS. 8 and 9, the female connection terminal portions 33a and 34a are inserted when male connection terminal portions 36a and 36b, which will be described later, are inserted, that is, the male connection terminal portions 36a and 36b are connected to each other. When the integrally provided plate cover 15 is mounted on the gear housing 10 (the opening 10d of the gear receiving recess 10b), the terminal support 35c is pressed against the upper end surface 10l of the support rib 10k by the fitting input ( The direction of the female connection terminal portions 33a and 34a and the direction of connection with the male connection terminal portions 36a and 36b are set.

  On the other hand, as shown in FIGS. 5 and 6, the inner surface 15 a of the plate cover 15 is formed in a plate-like shape at portions facing the female connection terminal portions 33 a and 34 a of the brush holder device 21. Male connection terminal portions 36a and 36b as second connection terminal portions are provided upright. Here, five power supply terminals 37 a to 37 e are concealed and laid on the plate cover 15, and one end of each of the terminals 37 a to 37 e is inside the connector housing 16 a of the power supply connector 16 provided on the plate cover 15. Protruding. The male connection terminal portions 36b and 36a are formed at the other ends of the two power supply side terminals 37a and 37b among the power supply side terminals 37a to 37e, and the male connection terminal portions 36a and 36b are connected in a female manner. It is erected from a predetermined portion of the plate cover 15 corresponding to the terminal portions 33a, 34a.

  Contact terminals 38a to 38c are connected to the remaining three power supply terminals 37c to 37e. The contact terminals 38 a to 38 c are in contact with the surface on which the conductive pattern 39 a of the rotating plate 39 is connected so as to rotate together with the worm wheel 12 when the plate cover 15 is mounted. That is, the position of the wiper arm is detected. Based on this position detection, the drive power supplied from the power feeding connector 16 is supplied from the male connection terminal portions 36a, 36b to the female connection terminal portions 33a, 34a so that the wiper arm is always stopped at the home position. The wiper motor 1 (motor body 2) is driven by being supplied to the brushes 26a to 26c.

  The plate cover 15 is attached to the gear housing 10 so as to close the opening 10d of the gear housing recess 10b of the gear housing 10. When the plate cover 15 is mounted, the rotating plate 39 is coupled so as to rotate integrally with the worm wheel 12, and the male connecting terminal portions 36a and 36b are provided in the brush holder device 21. It fits in 33a, 34a, and is mutually connected electrically. At this time, as shown in FIG. 8 and FIG. 9, when the female connection terminal portions 33a and 34a receive the fitting input from the male connection terminal portions 36a and 36b, the terminal support portion 35c is caused to be supported by the support portion 35c. Since it is configured to be pressed against (engaged with) the upper end surface 10 l of the support rib 10 k provided on the opposite side of the plate cover 15, the support portion 35 c of the male connection terminal portions 36 a and 36 b. The posture of the female connection terminal portions 33a, 34a is maintained without being moved in the insertion direction. That is, in the brush holder device 21, there is no change in posture that is inclined with respect to the direction of the axis L <b> 1 of the rotating shaft 7 (wiper motor 1), so the central axis of the brush holder device 21 is the axis of the rotating shaft 7 (wiper motor 1). A normal posture that matches the L1 direction is maintained. Accordingly, when the plate cover 15 is mounted, that is, when the connection terminals 33a, 34a, 36a, and 36b are fitted and connected, the brushes 26a to 26c held by the brush holder device 21 and the commutator 6a are in contact with each other. Is prevented from changing.

Next, characteristic effects of the present embodiment will be described.
(1) The wiper motor 1 of the present embodiment is electrically connected to the brushes 26a to 26c at the same time that the plate cover 15 that closes the opening 10d of the gear housing recess 10b of the gear housing 10 is attached to the gear housing 10. The male connection on the plate cover 15 side in electrical connection with the female connection terminal portions 33a, 34a on the brush holder device 21 side in the connected state and the power supply side terminals 37a, 37b provided on the power supply connector 16 The terminal portions 36a and 36b are inserted and connected. The gear housing 10 engages with a terminal support portion 35c that supports the female connection terminal portions 33a and 34a when the female connection terminal portions 33a and 34a and the male connection terminal portions 36a and 36b are fitted and connected. A support rib 10k that holds the posture of the female connection terminal portions 33a and 34a and holds the posture of the brush holder device 21 is formed. Thus, when the female connection terminal portions 33a and 34a and the male connection terminal portions 36a and 36b are inserted and connected, if the fitting input acts on the female connection terminal portions 33a and 34a, the female connection terminal portions 33a. , 34a try to change, but the support rib 10k can prevent the change in posture. Therefore, since the posture change of the female connection terminal portions 33a, 34a also changes the posture of the brush holder device 21, the posture change of the female connection terminal portions 33a, 34a is prevented, so that the brush holder device 21 A change in posture can be prevented, and a change in the contact state between the brushes 26a to 26c held by the brush holder device 21 and the commutator 6a can be prevented. As a result, the generation of abnormal noise between the brushes 26a to 26c and the commutator 6a is prevented, and the operating noise of the wiper motor 1 can be suppressed to a low level.

  (2) The brush holder device 21 of the present embodiment is fixed to the gear housing 10 via a floating support member 23 made of an elastic material. That is, since the posture of the brush holder device 21 is easily changed with respect to the gear housing 10, the support rib 10k is provided to prevent the posture change of the female connection terminal portions 33a and 34a, thereby changing the posture of the brush holder device 21. The effect to prevent is great.

  (3) A posture holding portion (support rib 10 k) for holding the posture of the female connection terminal portions 33 a and 34 a is provided in the gear housing recess 10 b in the gear housing 10. That is, since the posture holding portion only needs to be provided on the gear housing 10 side, the posture holding portion can be easily formed.

  (4) The housing case 35 made of an insulating material provided in the brush holder device 21 is interposed between the support rib 10k and the female connection terminal portions 33a and 34a to support the female connection terminal portions 33a and 34a. A terminal support portion 35c is provided. That is, the female connection terminal portions 33a and 34a are not in direct contact with the gear housing 10 by the terminal support portion 35c. Therefore, when the gear housing 10 is made of metal as in the present embodiment, the female connection terminal portions 33a, 34a and the gear housing 10 are prevented from being short-circuited by the terminal support portion 35c, and the female connection terminal portion is provided. 33a, 34a and the support rib 10k can be arranged very close to each other.

  (5) The support rib 10k has a shape along the direction in which the gear housing recess 10b is provided (in the direction of the axis L2 of the output shaft 14). Therefore, the support rib 10k can be formed at the same time as the gear receiving recess 10b is formed by a molding die.

  (6) The posture holding portion for holding the postures of the female connection terminal portions 33a and 34a is composed of a pair of support ribs 10k erected in a plate shape in the gear housing recess 10b. Therefore, since the support rib 10k has a simple shape, it can be easily formed. Further, the support rib 10k can contribute to reinforcing the bearing holding portion 10f in the gear housing recess 10b due to its nature.

  (7) Since the operation noise of the wiper motor 1 can be suppressed to a low level, the wiper motor 1 for wiping the windshield glass (front glass) is generally provided near the driver's seat. By suppressing the operating noise to a low level, it is possible to prevent the driver from feeling uncomfortable.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the connection terminal portions 33a and 34a on the brush holder device 21 side are female, and the connection terminal portions 36a and 36b on the plate cover 15 side are male, but these males and females are reversed. Also good.

  In the above embodiment, a pair of posture holding portions (support ribs 10k) for holding the postures of the female connection terminal portions 33a and 34a are provided in a plate shape, but the shape and number of the posture holding portions are limited to this. It may be changed as appropriate.

  In the above embodiment, the posture holding portion (support rib 10k) for holding the posture of the female connection terminal portions 33a and 34a is provided in the gear housing recess 10b of the gear housing 10, but the other gear housing 10 You may provide in a predetermined part. Moreover, you may provide not in the gear housing 10 side but in the brush holder apparatus 21 side, for example, the storage case 35. FIG. Further, both the gear housing 10 side and the brush holder device 21 side may be provided.

  In the above-described embodiment, the support rib 10k as the posture holding portion of the gear housing 10 (bearing holding portion 10f) located on the opposite side to the side where the plate cover 15 is disposed with respect to the female connection terminal portions 33a and 34a. Although it was set as the preferable example provided in the site | part, it can catch the brush holder apparatus 21 which an attitude | position tries to incline by the fitting input at the time of fitting male type | mold connection terminal part 36a, 36b in female type | mold connection terminal part 33a, 34a. If possible, for example, the base plate 22 may be provided on the side surface 22a side or the peripheral surface of the base plate 22 (coil housing portions 35a, 35b, etc.).

  In the above embodiment, the gear housing 10 is made of metal, but may be made of synthetic resin. In this case, since the support rib (10k) is also made of synthetic resin, that is, an insulating material, the terminal support portion 35c is omitted or the shape is changed, and the female connection terminal portions 33a and 34a are directly contacted with the support rib (10k). It becomes possible to touch.

  In the above embodiment, the wiper motor 1 is used. However, it may be applied to other motors.

Sectional drawing of the wiper motor of this embodiment. The external view seen from the bottom face side of the wiper motor. AA sectional drawing of FIG. Explanatory drawing for demonstrating the inside of the gear accommodation recessed part of a gear housing. Explanatory drawing for demonstrating a plate cover. Explanatory drawing for demonstrating a male type | mold connection terminal part. Explanatory drawing for demonstrating a female type | mold connection terminal part and its vicinity. Explanatory drawing for demonstrating the connection of both connection terminal parts. Explanatory drawing for demonstrating the connection of both connection terminal parts.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wiper motor, 2 ... Motor main body, 6 ... Armature, 6a ... Commutator, 7 ... Rotating shaft, 7a ... Worm which comprises a reduction mechanism, 10 ... Gear housing, 10b ... Gear accommodation recessed part, 10d ... Opening part, 10k DESCRIPTION OF SYMBOLS ... Support rib as posture holding part, 12 ... Worm wheel which comprises speed reduction mechanism, 14 ... Output shaft, 15 ... Plate cover, 16 ... Connector for electric power feeding, 21 ... Brush holder apparatus, 23 ... Floating support member, 26a ... Brush Brush for common as 26b ... Brush for low speed drive as brush, 26c ... Brush for high speed drive as brush, 33a, 34a ... Female connection terminal as first connection terminal, 35c ... Terminal support, 36a 36b, male connection terminal portions as second connection terminal portions, 37a to 37e, power supply side terminals.

Claims (8)

A motor body provided with an armature having a rotating shaft and a commutator;
A brush holder device that includes a first connection terminal portion that is in sliding contact with the commutator and that supplies driving power to the armature and is electrically connected to the brush;
A gear housing formed integrally with the motor main body and formed with a gear receiving recess for receiving a speed reducing mechanism for reducing the rotation of the rotating shaft and transmitting it to the output shaft;
A power supply connector for receiving the drive power supply from the outside, and a second connection terminal portion in an electrically connected state with respect to a power supply side terminal provided in the power supply connector; A plate cover mounted on the gear housing to close the opening of the housing recess,
The first connection terminal portion is disposed in the gear housing recess, and at the same time when the plate cover is mounted on the gear housing, the first connection terminal portion and the second connection terminal portion are the plate cover. A motor having a structure that is fitted and connected in the mounting direction to the gear housing ,
The brush holder device is provided with a terminal support portion that supports the first connection terminal portion included in the brush holder device,
At least one of the gear housing and the brush holder device on the side opposite to the plate cover where the first connection terminal portion and the second connection terminal portion are fitted and connected , and the first connection terminal portion and wherein the posture holding portion for holding the posture of the brush holder device at the time of fitting connection engages with the terminal supporting portion provided in the brush holder device of the second connecting terminal portion is formed Motor. The motor according to claim 1,
The brush holder device is fixed to the gear housing via a floating support member made of an elastic material. The motor according to claim 1 or 2,
The posture holding portion is provided in the gear housing and engages with the terminal support portion provided in the brush holder device when the first connection terminal portion and the second connection terminal portion are fitted and connected. A motor characterized by holding the posture of the brush holder device . The motor according to claim 3, wherein
The motor according to claim 1, wherein the posture holding portion is provided in the gear housing recess in the gear housing . The motor according to claim 4 ,
The motor according to claim 1, wherein the posture holding portion has a shape along a direction in which the gear housing recess is provided. The motor according to claim 4 or 5 ,
The posture holding portion is constituted by a pair of ribs erected in a plate shape in the gear housing recess. In the motor according to any one of claims 3 to 6,
The motor is characterized in that the terminal support part is made of an insulating material and is interposed between the first connection terminal part and the posture holding part . The motor according to any one of claims 1 to 7,
A motor characterized by being a wiper motor for driving a vehicle wiper device.

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