JP5848108B2 - motor - Google Patents

Description

  The present invention relates to a motor used as a drive source of, for example, a power window device.

  Conventionally, in this type of motor, a brush holder including a power supply brush for supplying power to the commutator and a brush-side terminal electrically connected to the power supply brush is provided at an end portion on the axial output side of the yoke housing. There is a motor unit and a speed reduction unit having a speed reduction mechanism for reducing and outputting the rotational driving force of the motor unit in a gear housing assembled to the output side end of the yoke housing. In such a motor, for example, as shown in Patent Document 1, a connector portion connected to an external connector for performing input / output of electric signals and power feeding is assembled to a gear housing. The brush side terminal is in elastic contact. Thereby, the electrical connection between the connector-side terminal and the brush-side terminal can be performed only by assembling the connector portion to the gear housing, and therefore the motor assembling process can be simplified.

US Pat. No. 6,530,796

  By the way, in the motor as described above, the connector side terminal and the brush side terminal are configured to be elastically contacted with the assembly of the connector portion. There is a possibility that poor connection with the side terminal may occur, and there is still room for improvement in this respect.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor that can suppress the occurrence of poor connection between a connector-side terminal and a brush-side terminal.

In order to solve the above problem, the invention according to claim 1 is a brush provided with a power supply brush for supplying power to a commutator fixed to a rotating shaft, and a brush-side terminal electrically connected to the power supply brush. A motor unit provided with a holder at the output side end of the yoke housing, and a deceleration for decelerating and outputting the rotational driving force of the motor unit in a gear housing assembled to the output side end of the yoke housing A motor having a speed reduction portion having a mechanism, a connector side terminal electrically connected to the brush side terminal, and a connector portion assembled to the gear housing, wherein the connector portion is a press-fit portion which is press-fitted into the press-fit portion formed in an end portion of the connector portion side of the gear housing, the rotation axis direction of the end portion of the connector portion side of the gear housing Has a securing portion secured to an engaged portion provided on the side, and the connector-side terminals, the tip end wherein a brush terminal side is configured to be inclined to the rotation axis direction, The connector side terminal and the brush side terminal are configured to come into elastic contact with the assembly of the connector portion and the gear housing, and the connector side after the press-fit portion is press-fitted into the press-fit portion. The terminal and the brush side terminal are configured to be in elastic contact with each other.

  In the present invention, when the connector portion and the gear housing are assembled, the connector portion and the gear housing are positioned by press-fitting the press-fit portion of the connector portion into the press-fit portion of the gear housing. And the brush side terminal are elastically contacted to make an electrical connection, so that it is possible to suppress the occurrence of a connection failure between the connector side terminal and the brush side terminal, which may be caused by a displacement between the connector portion and the gear housing. .

According to a second aspect of the invention, in the motor according to claim 1, wherein the locking portion is engaged with the engaged portion after the front Symbol connector terminals and the brush-side terminal is elastically contacts It is characterized by being.

  In this invention, after the connector side terminal and the brush side terminal are elastically contacted, the locking portion of the connector portion is locked to the locked portion of the gear housing, whereby the connector portion is fixed to the gear housing. Is done. For this reason, the electrical connection between the connector side terminal and the brush side terminal becomes more reliable.

The invention according to claim 3 is the motor according to claim 1 or 2, wherein the press-fitting portion is a press-fitting convex portion that is convex in a direction orthogonal to the assembly direction of the connector portion. To do.
In this invention, the press-fitting of the press-fitting part with respect to the press-fitted part becomes easy, and as a result, the assembling property of the connector part is improved.

  The invention according to claim 4 is the motor according to any one of claims 1 to 3, wherein one of the connector side terminal and the brush side terminal is a bifurcated terminal, and the other is the An insertion terminal inserted into the bifurcated portion of the bifurcated terminal in association with the assembly of the connector portion and the gear housing and elastically sandwiched between the bifurcated portions, and the insertion after the press-fitted portion is press-fitted into the press-fit portion The terminal is configured to be inserted into the bifurcated portion of the bifurcated terminal.

  In the present invention, the connection configuration between the connector side terminal and the brush side terminal includes a bifurcated terminal and an insertion terminal inserted into the bifurcated terminal. For this reason, it becomes possible to easily connect the connector side terminal and the brush side terminal with the assembly of the connector portion and the gear housing. In addition, since the insertion terminal is elastically sandwiched and connected to the bifurcated portion of the bifurcated terminal, the connection can be strengthened, and as a result, the electrical connection between the connector side terminal and the brush side terminal is further improved. It is possible to ensure.

  Therefore, according to the above described invention, it is possible to suppress the occurrence of poor connection between the connector side terminal and the brush side terminal.

The side view of a motor. The side view of a motor part and a connector part. The top view which looked at the motor part and the connector part from the gear housing side. The perspective view of a brush holder. The exploded top view of a motor. The disassembled perspective view of a connector part. (A) (b) (c) The schematic diagram for demonstrating the assembly | attachment aspect of a connector part. (A) (b) (c) The schematic diagram for demonstrating the assembly | attachment aspect of a connector part. (A) (b) (c) The schematic diagram for demonstrating the assembly | attachment aspect of a connector part. (A) (b) (c) The schematic diagram for demonstrating the assembly | attachment aspect of a connector part.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
A motor 1 according to this embodiment shown in FIG. 1 is used as a drive source of a power window device that lifts and lowers a window glass of a vehicle electrically. The motor 1 according to the present embodiment includes a motor unit 2 positioned at the top in FIG. 1, a speed reduction unit 3 provided on the output side (lower side) of the motor unit 2, and a side of the speed reduction unit 3 (left side in FIG. 1). The connector part 4 assembled | attached to the location). The motor 1 as a whole has a shape that is flat in the direction perpendicular to the axis, and when viewed from the axial direction, the longitudinal direction (the left-right direction in FIG. 1) is the flat direction, and the short direction (the direction orthogonal to the plane of the drawing in FIG. To do. That is, the axial direction, the flat direction, and the thickness direction of the motor 1 are directions orthogonal to each other.

[Configuration of motor section]
As shown in FIGS. 1, 2, and 3, the yoke housing 11 (hereinafter simply referred to as a yoke 11) of the motor unit 2 is a cylinder whose closed end on the opposite side (the upper end in FIG. 1) is closed. It has a shape. On the other hand, the output side end portion 11a of the yoke 11 is opened in the axial direction of the motor 1 (in the direction of the axis L1), and a flange portion 11b extending outward in the radial direction is formed on the output side end portion 11a. Yes. A magnet (not shown) is fixed to the inner peripheral surface of the yoke 11, and an armature 12 is disposed inside the magnet.

  The armature 12 includes a columnar rotary shaft 13 disposed in the central portion of the yoke 11 in the radial direction, an armature core 14 fixed to the rotary shaft 13 so as to be integrally rotatable, and the armature core 14 is wound around the armature core 14. The coil 15 is mounted, and the commutator 16 is fixed to the distal end side (lower end side in FIG. 1) of the rotating shaft 13 with respect to the armature core 14.

  A base end portion (upper end portion in FIG. 1) of the rotating shaft 13 is pivotally supported by a bearing (not shown) provided at the bottom center of the yoke 11. Further, the tip end portion (the lower end portion in FIG. 1) of the rotating shaft 13 protrudes from the opening of the output side end portion 11 a of the yoke 11 to the outside of the yoke 11. The armature core 14 is fixed to a portion of the rotating shaft 13 disposed inside the yoke 11 and faces the magnet (not shown) in the radial direction. On the other hand, the commutator 16 is externally fitted and fixed to a portion of the rotating shaft 13 that protrudes to the outside of the yoke 11 so as to rotate integrally with the rotating shaft 13.

  The commutator 16 has a cylindrical shape, and a plurality of segments 16a are arranged in parallel on the outer peripheral surface thereof so as to be separated in the circumferential direction. Some or all of the segments 16a are electrically connected to the coil 15. That is, power can be supplied to the coil 15 via the segment 16 a of the commutator 16.

[Brush holder configuration]
As shown in FIGS. 2, 3, and 4, the motor unit 2 includes a brush holder 21 made of resin at the output side end portion 11 a of the yoke 11. The brush holder 21 has a flat base portion 22 located outside the output side end portion 11a of the yoke 11, and the base portion 22 is slightly larger in size in the axis-perpendicular direction than the opening of the output side end portion 11a. Largely formed. In addition, a seal member 23 is provided on the outer edge of the base portion 22 to ensure liquid-tightness between a gear housing 41 and a yoke 11 of the speed reduction portion 3 described later. The seal member 23 is formed of, for example, an elastomer.

  As shown in FIGS. 2, 3, and 4, a bottomed cylindrical cover portion 24 that opens toward the yoke 11 is formed integrally with the base portion 22 at the center portion of the base portion 22. The commutator 16 is disposed in the 24. More specifically, the cover portion 24 includes a substantially cylindrical side wall portion 24a protruding from the base portion 22 in the direction opposite to the yoke 11 along the axial direction, and an axial end portion (the end portion on the side opposite to the yoke) of the side wall portion 24a. And a circular flat plate portion 24b formed integrally with each other. The side wall portion 24 a covers the radially outer side of the commutator 16, and the flat plate portion 24 b covers the axial end surface of the commutator 16. A bearing 24c that pivotally supports the rotating shaft 13 is provided at the center of the flat plate portion 24b, and the rotating shaft 13 is configured such that the tip portion protrudes from the cover portion 24.

  The cover portion 24 is integrally formed with a brush accommodating portion 25 that extends radially outward from the side wall portion 24a. A pair of brush accommodating portions 25 are formed at an interval of 90 degrees in the circumferential direction of the side wall portion 24a. More specifically, the pair of brush accommodating portions 25 are formed at positions that are 45 degrees apart on both sides in the circumferential direction from the center line L2 (see FIG. 3) of the brush holder 21 along the flat direction. Each brush housing portion 25 is also integrated with the base portion 22. Each brush accommodating portion 25 has a substantially rectangular tube shape communicating with the inside and outside of the cover portion 24, and a substantially rectangular parallelepiped power supply brush 26 is accommodated therein so as to be movable in the radial direction. The front end portion (radially inner end portion) of the power supply brush 26 protrudes from the brush housing portion 25 toward the inner peripheral side of the side wall portion 24 a and is configured to contact the outer peripheral surface of the commutator 16 in the cover portion 24. ing. Note that the cover portion 24 suppresses the fall of the brush powder caused by the power supply brush 26 being scraped by sliding contact with the commutator 16.

  As shown in FIGS. 3 and 4, the flat plate portion 24 b of the cover portion 24 is integrally formed with a flat plate side protruding portion 27 (reinforcing rib) protruding to the opposite side of the commutator 16. The flat plate-side protrusions 27 are formed in odd numbers (five in the present embodiment) at equal intervals in the circumferential direction, and are linearly formed along the radial direction from the inner peripheral end to the outer peripheral end where the bearing 24c is accommodated. Is formed. Further, a side wall-side protruding portion 28 extending from two flat plate-side protruding portions 27 a among the plurality of flat plate-side protruding portions 27 is integrally formed on the side wall portion 24 a of the cover portion 24. The side wall-side protruding portion 28 is formed so as to protrude radially outward from the side wall portion 24a. The flat plate-side protruding portion 27 and the side wall-side protruding portion 28 are formed so as to be line symmetric with respect to the center line L2 of the brush holder 21. With such a configuration, the vibration of the cover portion 24 that occurs during the sliding contact between the commutator 16 and the power supply brush 26 is suppressed as compared with a configuration in which the flat plate portion 24b of the cover portion 24 is simply flat. It is possible to suppress the occurrence of abnormal noise.

  Between the circumferential directions of the pair of brush housing portions 25, a pair of support column portions 31 protruding from the base portion 22 to the axially opposite yoke side (gear housing 41 side) is formed. The support column portion 31 is formed so as to be line symmetric with respect to the center line L <b> 2 of the brush holder 21, similarly to the brush housing portion 25. Each support column 31 has a circular cross section, and a coil portion of a torsion spring 32 that biases the power supply brush 26 radially inward (that is, the commutator 16 side) is extrapolated to each support column 31. Is retained. Each support column 31 abuts the gear housing 41 in the axial direction and the radial direction, and serves to position the gear housing 41 in the axial direction and the radial direction.

  In the brush holder 21, the arrangement location of the brush accommodating portion 25 and the support column portion 31 is set as one side in the flat direction, and a pair of holding wall portions 33 are formed on the center line L <b> 2 of the brush holder 21 on the other side in the opposite flat direction. On the other hand, they are formed at line-symmetric positions. A choke coil 34 is held on each of the pair of holding wall portions 33. Each of the pair of holding walls 33 holds a power supply terminal 35 as a brush side terminal. The choke coil 34 and the power feeding terminal 35 are configured to be line symmetric with respect to the center line L2 of the brush holder 21. In addition, a pair of positioning convex portions 33 a having a substantially semicircular cross section are formed on the outer side in the flat direction of the holding wall portion 33. Similar to the support column portion 31, the positioning convex portion 33 a abuts the gear housing 41 in the axial direction and the radial direction, and serves to position the gear housing 41 in the axial direction and the radial direction. In addition, each positioning convex part 33a and each support pillar part 31 are formed in the position which becomes point-symmetric with respect to the axis line L1 of the motor 1. FIG.

  The pair of power supply terminals 35 are respectively connected to a pair of choke coils 34, and the choke coils 34 are electrically connected to the pair of power supply brushes 26 via pigtails 36. Note that one of the pair of choke coils 34 (the lower choke coil in FIG. 3) is electrically connected to the pigtail 36 via the thermistor 37 held by the brush holder 21. The choke coil 34 is a noise prevention element for removing noise included in the power supplied to the armature 12.

  The pair of power supply terminals 35 are formed from a single metal plate, and include a connection piece 35a connected to a terminal extending from the choke coil 34, and an insertion portion 35b connected to a connector side terminal 56 described later. Each is equipped. The insertion portion 35b of each power supply terminal 35 is formed in a planar shape parallel to the axial direction of the motor 1 and is overlapped in the thickness direction of the motor 1 by partially bending a metal plate material ( (Refer FIG.7 (b)). Further, the bent end portion 35c formed by bending the metal plate material in the insertion portion 35b is configured to face the connector side terminal 56 side. In addition, in the manufacturing process of the brush holder 21, each power supply terminal 35 is connected between the pair of holding wall portions 33, and after fixing to the holding wall portion 33, the connected portion is cut to cut each power supply terminal 35. The terminal 35 is insulated.

[Configuration of deceleration unit]
As shown in FIG. 1, the speed reduction unit 3 includes a gear housing 41 and a speed reduction mechanism 42 accommodated in the gear housing 41. The gear housing 41 includes a holder housing portion 43 that is fixed to the flange portion 11b of the yoke 11, and a worm shaft housing portion 44 that extends from the holder housing portion 43 in the direction opposite to the yoke 11 along the axis L1 direction of the rotary shaft 13. And a worm wheel housing portion 45 formed on the lateral side of the worm shaft housing portion 44 in the flat direction (right side in FIG. 1).

  The gear housing 41 is fixed to the yoke 11 by fixing a holder housing portion 43 that is in contact with the flange portion 11 b in the axial direction to the flange portion 11 b by a plurality of screws 46. Inside the holder accommodating portion 43, a portion on the distal end side of the rotating shaft 13 enters and the commutator 16 is disposed. Further, inside the holder housing portion 43, there are portions such as the cover portion 24, the brush housing portion 25, the power feeding terminals 35, and the like that protrude from the output side end portion 11 a of the yoke 11 to the outside of the yoke 11 in the brush holder 21. It has entered.

  A substantially cylindrical worm shaft 47 is accommodated in the worm shaft accommodating portion 44. A screw-like worm portion 47 a is formed at a substantially central portion in the axial direction of the worm shaft 47. The worm shaft 47 is arranged coaxially with the rotation shaft 13 (arranged so that the center axes thereof coincide with each other), and can be rotated around the center axis L3 inside the worm shaft housing portion 44. is there. Further, the base end portion (the upper end portion in FIG. 1) of the worm shaft 47 is connected to the distal end portion of the rotating shaft 13 via a clutch 48 disposed in the holder housing portion 43. The clutch 48 operates so as to transmit the rotational driving force of the rotating shaft 13 to the worm shaft 47 while not transmitting the rotating force from the worm shaft 47 to the rotating shaft 13.

  The internal space of the worm wheel storage portion 45 is connected to the internal space of the worm shaft storage portion 44. A disc-shaped worm wheel 49 that meshes with the worm portion 47 a is accommodated in the worm wheel accommodating portion 45. The worm wheel 49 and the worm shaft 47 constitute the speed reduction mechanism 42. An output shaft 50 extending along the axial direction of the worm wheel 49 is provided at the central portion in the radial direction of the worm wheel 49 so as to be able to rotate integrally with the worm wheel 49. The front end portion of the output shaft 50 protrudes outside the gear housing 41, and the window glass of the vehicle is connected to the front end portion of the output shaft 50 via a window regulator (not shown).

[Configuration of connector section]
A connector portion 4 is provided on the side of the holder housing portion 43 of the gear housing 41 on one side in the flat direction. The connector part 4 includes a connector housing 51 assembled to the holder housing part 43 of the gear housing 41.

  As shown in FIGS. 2, 3, 5, and 6, the connector housing 51 is made of a resin material, and the outer peripheral surface thereof has a substantially rectangular tube shape extending in the flat direction of the motor 1. Specifically, the connector housing 51 has a shape that opens to both sides in the flat direction, and the opening on the gear housing 41 side is a first opening 51a, and the opening on the opposite side is a second opening 51b.

  At both ends of the connector housing 51 in the motor axial direction, locking pieces 52 extending toward the gear housing 41 in the flat direction from the first opening 51a are formed. On the other hand, the holder housing portion 43 of the gear housing 41 is open at the end portion on the connector portion 4 side, and on both sides of the end portion on the connector portion 4 side in the motor axial direction, as shown in FIG. 51 to which the latching piece 52 of each is latched is formed (only the axial direction motor part 2 side is shown in FIG. 5). The connector housing 51 is fixed to the gear housing 41 by locking the locking pieces 52 to the locked portions 43a. Each locking piece 52 is formed with a positioning protrusion 52a that protrudes outward in the flat direction of the motor 1 from the second opening 51b.

  On one side surface of the connector housing 51 in the thickness direction, an external connection portion 53 is formed to extend in the thickness direction as shown in FIGS. An insertion hole 53 a extending to the inside of the connector housing 51 is recessed in the center of the external connection portion 53. The insertion hole 53a is recessed so as to be recessed in the thickness direction, and the inner peripheral surface thereof has a shape corresponding to the external shape of an external connector (not shown) inserted into the insertion hole 53a. Further, the outer periphery of the external connection portion 53 is surrounded by a substantially cylindrical connector boot 54. The connector boot 54 is for preventing water from entering the insertion hole 53a. The connector boot 54 of the present embodiment is formed of an elastomer and is integrally formed with the connector housing 51.

  As shown in FIGS. 2, 5, and 6, a pair of connector-side terminals 56 are held on the first opening 51 a side of the connector housing 51. Each connector-side terminal 56 has a fixing portion 61 (see FIG. 6) that is press-fitted and fixed to the connector housing 51. The fixing portion 61 includes a pair of elastic connection pieces 62 (extending toward the gear housing 41). Bifurcated part) is formed. The connector side terminal 56 is configured as a bifurcated terminal (tuning fork terminal) by the pair of elastic connection pieces 62. The elastic connection pieces 62 are arranged in parallel in the thickness direction of the motor 1, and the tip end side in the assembly direction X (flat direction of the motor 1) of the connector portion 4 is inclined to the side opposite to the axial yoke 11. ing. Each connector-side terminal 56 is formed with a connection terminal portion 63 extending in a crank shape from the fixed portion 61 to the outside of the elastic connection piece 62.

  Between the pair of elastic connection pieces 62 of each connector side terminal 56, an insertion portion 35b of the power feeding terminal 35 of the brush holder 21 is inserted. Each elastic connecting piece 62 is in pressure contact with the insertion portion 35b of the power feeding terminal 35 in the motor thickness direction (the direction in which the elastic connecting pieces 62 are juxtaposed) by its own elastic force. And the power supply terminals 35 are electrically connected.

  In the connector housing 51, a board holding portion 55 extending from the first opening 51 a to the gear housing 41 side is formed on the lower side in the axial direction of the connector side terminal 56 (on the side opposite to the yoke). Both end surfaces of the substrate holding portion 55 in the motor axial direction have a planar shape perpendicular to the axial direction, and the yoke 11 side end surface of the both end surfaces is in the motor axial direction as shown in FIG. A pair of protruding press-fit convex portions 55a is formed. The press-fitting convex portion 55a is press-fitted into a pressure inlet 43b (see FIG. 7A) formed at the end of the holder housing portion 43 of the gear housing 41 on the connector portion 4 side. The connector part 4 is positioned with respect to 41. Note that the end of each press-fitting convex portion 55a on the gear housing 41 side has an inclined shape so as to facilitate press-fitting into the press-in port 43b.

  A control circuit board 70 (see FIG. 6) having a flat square box shape is accommodated in the board holding portion 55. The control circuit board 70 is formed by coating a circuit board on which a plurality of electronic components are mounted with an insulating resin material so that the thickness direction of the board 70 is parallel to the axial direction of the motor 1. Is arranged. At the end of the control circuit board 70 on the gear housing 41 side, as shown in FIGS. 3 and 6, four first board-side terminals 71 extending in the flat direction of the motor 1 and two second terminals are provided. Substrate side terminals 72 are provided. The first substrate side terminals 71 and the second substrate side terminals 72 are arranged on the same plane and are arranged in parallel in the thickness direction of the motor 1. Further, each first board side terminal 71 is provided at a position from the center of the control circuit board 70 in the motor thickness direction, and the two second board side terminals 72 are motor thicknesses of the first board side terminal 71. It is provided on each side of the direction. The second board side terminals 72 are electrically connected to the connection terminal portions 63 of the connector side terminals 56 by welding (see FIG. 2).

  In the connector housing 51, a Hall IC holding portion 57 extending from the first opening 51 a to the gear housing 41 side is formed on the lower side in the axial direction of the board holding portion 55 (on the side opposite to the yoke). A Hall IC 58 serving as a rotation detecting element is held at the longitudinal end of the Hall IC holding portion 57 (end in the flat direction of the motor), and the Hall IC 58 can be rotated integrally with the rotary shaft 13 in the gear housing 41. It is comprised so that the provided sensor magnet 17 may be opposed to radial direction (refer FIG. 1). The four Hall IC side terminals 59 provided in the Hall IC 58 are welded to the four first substrate side terminals 71 of the control circuit board 70, respectively. In the Hall IC holding portion 57, a welding window portion 57c for welding the Hall IC side terminal 59 and the first substrate side terminal 71 is formed.

  As shown in FIG. 6, a plurality of third board side terminals 73 are provided at the end of the control circuit board 70 opposite to the first board side terminals 71 and the second board side terminals 72. The third board side terminal 73 is electrically connected to the flat relay board 76 housed in the second opening 51 b of the connector housing 51. The relay board 76 is arranged so that the plate thickness direction thereof is parallel to the flat direction of the motor 1, and three anti-noise elements 77 are electrically mounted on the relay board 76. These noise prevention elements 77 are capacitors, for example, and are electronic components for erasing electrical noise. A plurality of connector terminals 78 embedded in the connector housing 51 by insert molding are electrically connected to the relay board 76. One end of each connector terminal 78 protrudes into the internal space of the insertion hole 53a of the external connection portion 53 and is connected to the external connector inserted into the insertion hole 53a.

  The second opening 51 b of the connector housing 51 is closed by a lid member 79. The lid member 79 is in contact with the positioning protrusions 52a in the motor shaft direction, thereby positioning in the motor shaft direction. The lid member 79 is in contact with the proximal end portion 54a (see FIG. 3) of the connector boot 54 in the motor thickness direction, and is thus positioned in the motor thickness direction. As described above, the lid member 79 is positioned at the three points of the positioning protrusions 52 a and the base end portion 54 a of the connector boot 54. The lid member 79 is fixed to the connector housing 51 by ultrasonic welding to seal the second opening 51b.

Next, assembly of the connector part 4 will be described.
7A and 7B respectively show the pressure inlet 43b and the locked portion 43a before the connector portion 4 is assembled to the gear housing 41, the connector side terminal 56, the power supply terminal 35, the locking piece 52, and the locked portion. The latching | locking part 43a is shown. From this state, when the connector part 4 is assembled to the holder accommodating part 43 of the gear housing 41 along the flat direction (assembly direction X) of the motor 1, first, as shown in FIG. The 51 substrate holding portions 55 and the press-fitting convex portions 55 a are press-fitted into the pressure inlet 43 b of the gear housing 41. Thereby, the connector part 4 is positioned with respect to the gear housing 41. At this time, as shown in FIG. 8B, the power feeding terminal 35 is not inserted into the connector-side terminal 56, and as shown in FIG. It is not locked to 43a.

  When the connector part 4 is further pushed in the assembly direction X from the state shown in FIGS. 8A to 8C, as shown in FIG. The insertion portion 35b of the power feeding terminal 35 is inserted between them. Thereby, the elastic connecting piece 62 sandwiches the insertion portion 35b in the motor thickness direction by its own elastic force, whereby each connector side terminal 56 and each power supply terminal 35 are electrically connected. ing. At this time, as shown in FIG. 9C, the locking piece 52 is not locked to the locked portion 43a. Further, as shown in FIG. 9A, the press-fit convex portion 55a is further assembled from the state before the power feeding terminal 35 is inserted between the elastic connecting pieces 62 (the state shown in FIG. 8A). Pushed into X. As described above, after the connector portion 4 is positioned by press-fitting the press-fit convex portion 55a into the pressure inlet 43b, the connector-side terminal 56 and the power supply terminal 35 are brought into elastic contact with each other to be electrically connected. . For this reason, a connection failure between the connector-side terminal 56 and the power feeding terminal 35 that may be caused by a positional shift between the connector portion 4 and the gear housing 41 is suppressed.

  Next, when the connector portion 4 is further pushed in the assembly direction X from the state shown in FIGS. 9A to 9C, each locking piece 52 of the connector housing 51 is moved as shown in FIG. It is locked to each locked portion 43 a of the gear housing 41. At this time, the locking piece 52 is bent in the motor shaft direction (direction perpendicular to the paper surface) while slidingly contacting the locked portion 43a, and then locked to the locked portion 43a in the anti-assembly direction by elastic recovery. It is like that. At this time, as shown in FIG. 10 (a), the press-fit convex portion 55a further extends from the state before the locking piece 52 is locked to the locked portion 43a (the state shown in FIG. 9 (a)). Pushed in the assembly direction X. Further, as shown in FIG. 10B, the connector-side terminal 56 is further assembled from the state before the locking piece 52 is locked to the locked portion 43a (the state shown in FIG. 9B). Inserted in direction X. As described above, the connector housing 51 is fixed to the gear housing 41 by the locking piece 52 being locked to the locked portion 43a.

  In the motor 1 configured as described above, the external connector for inputting / outputting electric signals and feeding power is inserted into the insertion hole 53a of the external connection portion 53, and the connector terminal 78 and the relay board 76 are connected from the external connector. When power is supplied to the armature 12 through the control circuit board 70, the connector side terminal 56, and the power supply terminal 35 of the brush holder 21, the armature 12 (rotary shaft 13) is driven to rotate. When the armature 12 is driven to rotate, the sensor magnet 17 rotates together with the rotating shaft 13. The change of the magnetic field due to the rotation of the sensor magnet 17 is detected by the Hall IC 58 provided on the control circuit board 70. The Hall IC 58 outputs a rotation detection signal that is an electrical signal corresponding to a change in the magnetic field due to the rotation of the sensor magnet 17. The control circuit board 70 detects rotation information (rotation speed, rotation angle, etc.) of the armature 12 based on the rotation detection signal, and supplies power to the armature 12 according to the detected rotation information. ing.

Next, characteristic effects of the present embodiment will be described.
(1) The connector portion 4 has a press-fit convex portion 55a that is press-fitted into a pressure inlet 43b (a press-fit portion) of the gear housing 41, and the connector side terminal 56 and the power supply are fed along with the assembly of the connector portion 4 and the gear housing 41. The terminal 35 (brush side terminal) is configured to be elastically contacted. The connector-side terminal 56 and the power feeding terminal 35 are configured to be elastically contacted after the press-fitting convex portion 55a is press-fitted into the pressure inlet 43b. As a result, when the connector portion 4 and the gear housing 41 are assembled, the press-fitting convex portion 55a is press-fitted into the pressure inlet 43b so that the connector portion 4 and the gear housing 41 are positioned. And the power supply terminal 35 are brought into elastic contact with each other to be electrically connected. For this reason, it is possible to suppress the occurrence of poor connection between the connector-side terminal 56 and the power feeding terminal 35 that may be caused by the positional deviation between the connector portion 4 and the gear housing 41.

  (2) The connector portion 4 has a locking piece 52 that is locked to the locked portion 43a provided in the gear housing 41, and the connector side terminal 56 and the power feeding terminal 35 are elastically contacted. Later, the locking piece 52 is locked to the locked portion 43a. Thereby, after the connector side terminal 56 and the power feeding terminal 35 are elastically contacted, the locking piece 52 of the connector portion 4 is locked to the locked portion 43a of the gear housing 41, whereby the connector portion 4 is fixed to the gear housing 41. For this reason, the electrical connection between the connector-side terminal 56 and the power feeding terminal 35 becomes more reliable.

  (3) Since the press-fit portion of the connector portion 4 is composed of the press-fit convex portion 55a that is convex in the direction (motor shaft direction) orthogonal to the assembly direction X of the connector portion 4, the press-fit convex portion with respect to the pressure inlet 43b The press-fit of 55a becomes easy, and as a result, the assembling property of the connector part 4 is improved.

  (4) The connector side terminal 56 is a bifurcated terminal (tuning fork terminal), and the power supply terminal 35 is inserted between the elastic connection pieces 62 of the connector side terminal 56 in association with the assembly of the connector portion 4 and the gear housing 41. The insertion terminal is elastically sandwiched between the elastic connection pieces 62. Then, after the press-fitting convex portion 55a is press-fitted into the press-in port 43b, the power feeding terminal 35 is configured to be inserted between the elastic connection pieces 62. That is, since the connection configuration between the connector side terminal 56 and the power supply terminal 35 is composed of a bifurcated terminal and an insertion terminal inserted into the bifurcated terminal, the connector side terminal is assembled with the connector portion 4 and the gear housing 41. 56 and the power supply terminal 35 can be easily connected. Further, since the power supply terminal 35 as the insertion terminal is elastically sandwiched and connected between the elastic connection pieces 62 of the connector side terminal 56, the connection can be strengthened. As a result, the connector side terminal The electrical connection between the power supply terminal 56 and the power supply terminal 35 can be made more reliable.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the elastic connection piece 62 of the connector side terminal 56 is configured to incline to the side opposite to the axial yoke 11 toward the tip end side in the assembly direction X of the connector portion 4. It is not particularly limited to this, and it may be configured to incline toward the yoke 11 side, or may be configured to extend in parallel with the assembly direction X without inclining.

  In the above embodiment, the insertion portion 35b of the power feeding terminal 35 is formed by overlapping the thickness of the motor 1 by partially bending a metal plate material, but is not particularly limited thereto, For example, a metal plate material may be separately attached to the insertion portion to form an insertion portion in which the metal plate materials are overlapped in the thickness direction of the motor 1.

  -In above-mentioned embodiment, although the insertion part 35b of the terminal 35 for electric power feeding was set as the structure which piled up the metal plate material doubly, it is not specifically limited to this, The metal plate material was piled up more than 3 times. Alternatively, the insertion portion 35b may be formed of a single metal plate.

  In the above embodiment, the connector-side terminal 56 is configured as a bifurcated terminal, and the power feeding terminal 35 is configured as an insertion terminal sandwiched between the bifurcated terminals, but conversely, the power feeding terminal 35 is configured as a bifurcated terminal. The side terminal 56 may be configured as an insertion terminal. In addition, one of the connector side terminal 56 and the power supply terminal 35 does not have to be a bifurcated terminal, and the connector side terminal 56 and the power supply terminal 35 are elastically brought into contact with the assembly of the connector portion 4. Any configuration may be used.

  In the above embodiment, the press-fit convex portion 55 a is formed on the board holding portion 55 of the connector housing 51, but is not particularly limited thereto, and may be provided at a location other than the board holding portion 55 in the connector housing 51. Good. The press-fitting convex portion (press-fit convex portion 55 a) is not necessarily provided on the connector housing 51 side. The press-fit convex portion 55 a is omitted from the board holding portion 55, and the inner side of the pressure inlet 43 b of the gear housing 41. A press-fit convex portion may be provided on the surface. In this case, the substrate holding portion 55 itself is configured as a press-fitting portion on the connector portion 4 side, and the substrate holding portion 55 is pressed against the press-fitting convex portion of the pressure inlet 43b.

  In the above embodiment, the board holding portion 55 and each press-fitting convex portion 55a of the connector housing 51 are press-fitted (inserted) into the pressure inlet 43b of the gear housing 41. However, the present invention is not particularly limited thereto. For example, it is good also as a structure which extends the edge part of the pressure inlet 43b to a cylinder shape, and the cylindrical press-fit part provided in the connector part 4 with respect to the cylindrical part is extrapolated.

  In the above embodiment, the locking piece 52 and the locked portion 43a for fixing the connector housing 51 and the gear housing 41 are provided. However, for example, the connector housing 51 and the gear housing 41 are screwed or the like. It is good also as a structure fixed by.

  In the above embodiment, the connector 4 is configured to be assembled in the direction perpendicular to the axis (motor flat direction) with respect to the gear housing 41. However, for example, the connector 4 may be assembled in the motor axial direction.

  In the above embodiment, the present invention is applied to the motor 1 used as a drive source of the power window device, but may be applied to a motor used as a drive source of a vehicle wiper device other than the power window device.

  DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Motor part, 3 ... Deceleration part, 4 ... Connector part, 11 ... Yoke housing, 11a ... Output side edge part, 13 ... Rotating shaft, 16 ... Commutator, 21 ... Brush holder, 26 ... Feeding brush 35 ... Power supply terminal (brush side terminal, insertion terminal), 41 ... Gear housing, 42 ... Deceleration mechanism, 43a ... Locked part, 43b ... Pressure inlet (pressed part), 51 ... Connector housing, 52 ... Stop piece (locking portion), 55a ... press-fit convex portion (press-fit portion), 56 ... connector side terminal (bifurcated terminal), 62 ... elastic connecting piece (bifurcated portion), X ... assembly direction.

Claims (4)

A motor unit in which a power supply brush for power supply to a commutator fixed to a rotating shaft and a brush holder including a brush side terminal electrically connected to the power supply brush are provided at an output side end of the yoke housing;
A speed reduction portion having a speed reduction mechanism for decelerating and outputting the rotational driving force of the motor portion in a gear housing assembled to the output side end portion of the yoke housing;
A motor having a connector side terminal electrically connected to the brush side terminal, and a connector part assembled to the gear housing;
The connector portion includes a press-fit portion that is press-fitted into a press-fit portion formed at an end portion on the connector portion side of the gear housing, and both ends of the end portion on the connector portion side of the gear housing in the rotational axis direction. A locking portion that is locked to the locked portion provided ,
The connector side terminal is configured such that a tip side which is the brush side terminal side is inclined in the rotation axis direction,
The connector side terminal and the brush side terminal are configured to elastically contact with the assembly of the connector portion and the gear housing,
The motor configured to elastically contact the connector-side terminal and the brush-side terminal after the press-fit portion is press-fitted into the press-fit portion. The motor according to claim 1,
Motor, characterized in that the front Symbol connector terminals and the brush-side terminal is configured such that the engaging portion is engaged with the engaged portion after being elastically contacts. The motor according to claim 1 or 2,
The motor, wherein the press-fit portion is a press-fit convex portion that is convex in a direction orthogonal to the assembly direction of the connector portion. The motor according to any one of claims 1 to 3,
One of the connector side terminal and the brush side terminal is a bifurcated terminal, and the other is inserted into the bifurcated portion of the bifurcated terminal in association with the assembly of the connector portion and the gear housing. An insertion terminal that is sandwiched elastically,
The motor configured to insert the insertion terminal into the bifurcated portion of the bifurcated terminal after the press-fitted portion is press-fitted into the pressed-in portion.