JP2012139078A - Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the size increase in an axis orthogonal direction in a motor where a commutator, a feed brush, and electric components are disposed on the outer side of a yoke housing.SOLUTION: Each terminal 40a, 40b held by a brush holder 21 is composed of first and second terminal parts 51, 52, which extend in parallel with an axis orthogonal direction (flat direction) and face in the same direction, and a bending part 50 connecting the first and second terminals 51, 52. Each terminal 40a, 40b is formed into a substantially U shape. A connector terminal of a connector part is connected with each first terminal part 51, and a pigtail 26a extended from a feed brush 26 is connected with each second terminal part 52.

Description

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

  Conventionally, this type of motor includes a motor part having a rotor in a yoke housing, a speed reduction part provided at the output side end part of the motor part for reducing the rotational driving force of the motor part, and input / output of electric signals. It is comprised from the connector part connected to the external connector for performing electric power feeding (for example, refer patent document 1). The motor unit is configured such that the rotor rotation shaft protrudes from the opening end on the axial output side of the yoke housing to the speed reduction unit side, and the opening end of the yoke housing has power to the commutator of the rotor. And a brush holder for holding electric parts such as a noise prevention element. The speed reducing portion has a gear housing fixed to the output side end portion of the yoke housing with a screw or the like. A worm gear, a worm wheel, and the like constituting a speed reduction mechanism are accommodated inside the gear housing, and the rotational driving force of the motor unit is decelerated by the speed reduction mechanism and output. The connector portion is assembled to the gear housing, and has a power supply brush held by the brush holder and a connection terminal that is electrically connected to an electrical component.

  Further, for example, in the motor of Patent Document 1, the commutator, the power supply brush, and the electrical components of the motor unit are arranged outside the yoke housing. According to such a configuration, since it is not necessary to make the shape of the metal yoke housing into a complicated shape for accommodating the brush holder, the yoke housing can be easily manufactured at low cost. .

JP 2003-18794 A

  By the way, in the motor as described above, a linear conductive member parallel to the direction perpendicular to the axis of the motor is held by the brush holder, and the electric power between the power supply brush and the electrical component and the connection terminal of the connector part is held by the conductive member. The structure which aims at general continuity can be considered. In such a configuration, the connecting portion at one end portion in the longitudinal direction of the conductive member is connected to the conducting wire extending from the power supply brush, the connecting portion at the other end portion in the longitudinal direction is connected to the connecting terminal of the connector portion, and A connection portion at a predetermined position of the conductive member is connected to an electrical component of the brush holder. However, when the connection terminals of the power supply brush, the electrical component, and the connector unit are arranged in the vicinity of each connection part of the conductive member so as to facilitate the connection between them, the arrangement of the conductive member is in the longitudinal direction of the conductive member (motor axis orthogonal) As a result, the motor may be enlarged in the direction perpendicular to the axis.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a power supply brush, an electrical component, and a connector portion in a motor in which a commutator, a power supply brush, and an electrical component are disposed outside a yoke housing. It is to suppress the enlargement in the direction perpendicular to the axis while facilitating the connection between the connection terminal and the conductive member.

  In order to solve the above problem, the invention according to claim 1 holds a power supply brush for supplying power to the commutator, an electrical component, the power supply brush, and a conductive member electrically connected to the electrical component. A brush holder is provided in the motor housing provided at the opening end on the axial output side of the yoke housing, and in the gear housing assembled to the opening end of the yoke housing, the rotational driving force of the motor unit is decelerated and output. A speed reduction mechanism having a speed reduction mechanism, and a connector part having a connection terminal assembled to the gear housing and electrically connected to the conductive member, the commutator, the power supply brush, and the electrical component are The conductive member includes a first terminal portion and a second terminal portion that extend in parallel with the direction perpendicular to the axis and face in the same direction; A connecting portion of the connector portion is connected to the first terminal portion, and a conductive wire extending from the power supply brush is connected to the second terminal portion, respectively. Features.

  In the present invention, the first and second terminals of the power supply brush and the electrically conductive member for achieving electrical continuity between the electrical component and the connection terminal of the connector portion extend in parallel to the direction perpendicular to the axis and face the same direction. The first terminal portion is connected to the connection terminal of the connector portion, and the second terminal portion is connected to the conducting wire extending from the power supply brush. Thereby, the connection terminal and the power supply brush of the connector part are arranged in the vicinity of the first terminal part and the second terminal part of the conductive member, respectively, and the electrical parts are arranged in the vicinity of the connection part with the conductive member to facilitate the connection. Although it is not necessary to arrange all of the power supply brushes, electrical components, and connection terminals of the connector part in a direction parallel to the axis orthogonal direction, it is possible to suppress an increase in the size of the motor in the axis orthogonal direction. Become.

  According to a second aspect of the present invention, in the motor according to the first aspect, the conductive member is disposed at a position opposite to the yoke housing with respect to the power supply brush and the electric component. To do.

  In this invention, since it becomes possible to arrange the conductive member so as to overlap the electric component or the power supply brush in the axial direction, the motor orthogonal direction by arranging the conductive member on the side of the electric component or the power supply brush in the direction orthogonal to the axis. It is possible to facilitate the connection between the electric component or the power supply brush and the conductive member while preventing an increase in size.

  According to a third aspect of the present invention, in the motor according to the first or second aspect, the conductive member has a plate shape, and the plate surface thereof is arranged in parallel with the axis of the motor unit. It is characterized by.

  In this invention, since the conductive member is disposed so that the plate surface thereof is parallel to the axis of the motor unit, the conductive member can be reduced in the direction perpendicular to the axis, and as a result, the direction perpendicular to the axis of the motor can be obtained. It is possible to more suitably prevent the increase in size.

  According to a fourth aspect of the present invention, in the motor according to any one of the first to third aspects, the first and second terminal portions of the conductive member are arranged in a direction perpendicular to the axis of the motor portion. It is structured.

  In the present invention, since the first and second terminal portions of the conductive member are arranged in the direction orthogonal to the axis of the motor portion, the conductive member is substantially U-shaped when viewed from the axial direction. For this reason, it is possible to suitably suppress an increase in the size of the motor in the direction perpendicular to the axis while facilitating the connection between the power supply brush, the electrical component and the connection terminal of the connector portion and the conductive member.

  A fifth aspect of the present invention is the motor according to any one of the first to third aspects, wherein the first and second terminal portions of the conductive member are arranged in the axial direction of the motor portion. It is characterized by that.

  In the present invention, since the first and second terminal portions of the conductive member are arranged in the axial direction of the motor portion, the conductive member is substantially U-shaped when viewed from the direction perpendicular to the axis. For this reason, it is possible to suitably suppress an increase in the size of the motor in the direction perpendicular to the axis while facilitating the connection between the power supply brush, the electrical component and the connection terminal of the connector portion and the conductive member.

  Therefore, according to the above-described invention, in the motor in which the commutator, the power supply brush, and the electrical components are disposed outside the yoke housing, it is possible to suppress the increase in size in the direction perpendicular to the axis.

The side view of the motor of this embodiment. The exploded side view of a motor. Sectional drawing of a motor. Sectional drawing which expands and shows the brush holder vicinity in FIG. The perspective view of a motor part. The top view which looked at the motor part from the axial direction output side. The top view which looked at the gear housing from the axial direction. The perspective view for demonstrating the brush holder of another example.

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 of the present embodiment includes a motor unit 2 located 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 (right side in FIG. 1). ) And the connector portion 4 assembled to each other. The motor 1 has a flat shape in a direction orthogonal to the axis L1 as a whole, the longitudinal direction (left-right direction in FIG. 1) when viewed from the axial direction is the flat direction, and the short direction (the direction orthogonal to the paper surface in FIG. 1). Is the thickness direction. 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 of the motor unit 2 (hereinafter simply referred to as a yoke 11) has a cylindrical shape in which one axial end (the upper end in FIG. 1) is closed. I am doing. On the other hand, the other axial end portion (output side end portion) of the yoke 11 is an opening end portion 11a, and a flange portion 11b extending outward in the radial direction is formed in the opening end portion 11a. .

  As shown in FIG. 3, an armature 14 having a columnar rotating shaft 13 is disposed inside the magnet 12 fixed to the inner peripheral surface of the yoke 11. The rotating shaft 13 of the armature 14 is disposed at the radial center portion of the yoke 11, and the base end portion (the upper end portion in FIG. 1) of the rotating shaft 13 is a bearing provided at the bottom center of the yoke 11. 15 is rotatably supported. The armature 14 is configured to rotate integrally with the rotation shaft 13 about the axis L1 of the rotation shaft 13 as a rotation center. The tip of the rotating shaft 13 protrudes from the open end 11a of the yoke 11 to the outside of the yoke 11, and a commutator 16 is fixed to the protruding portion. That is, the commutator 16 is disposed at a position outside the yoke 11. The front ends of the commutator 16 and the rotating shaft 13 enter a resin gear housing 61 that constitutes the speed reduction unit 3.

[Brush holder configuration]
As shown in FIGS. 3 and 4, a brush holder 21 is provided at the open end 11 a of the yoke 11. The brush holder 21 has a flat base 22 positioned outside the open end 11 a of the yoke 11, and the base 22 is slightly larger in size in the direction perpendicular to the axis than the open end 11 a of the yoke 11. Is formed. A fixed wall portion 23 extending in the axial direction along the inner peripheral surface of the yoke 11 is formed on the base portion 22, and the fixed wall portion 23 is inserted into the inside of the yoke 11 from the opening end portion 11 a and fixed. A sealing member S made of an elastomer is provided on the outer edge portion of the base portion 22. The seal member S has a U-shaped cross section that sandwiches the outer edge portion of the base portion 22 in the axial direction. The seal member S is held between the flange portion 11b of the yoke 11 and the gear housing 61 in the axial direction. Thus, the seal member S seals the opening end portion 11a of the yoke 11 and the opening portion on the yoke 11 side of the gear housing 61, and liquid is prevented from entering the inside of the yoke 11 and the inside of the gear housing 61. It is like that.

  The base portion 22 includes an outer peripheral wall portion 24a that extends in an axial direction from a lower end surface (an end surface opposite to the yoke 11) and substantially covers the outer periphery of the commutator 16, and an axial end portion (lower end portion) of the outer peripheral wall portion 24a. ) And a circular wall portion 24b that covers the axial end surface of the commutator 16 is formed. The circular wall portion 24b constitutes the axially opposite yoke side end surface of the cover portion 24, and a bearing 24c that rotatably supports the rotary shaft 13 is provided at the center of the circular wall portion 24b. Further, as shown in FIGS. 5 and 6, a brush housing portion 25 extending radially outward from the outer peripheral wall portion 24 a of the cover portion 24 is spaced 90 degrees apart from the lower end surface of the base portion 22 in the circumferential direction. A pair is formed. More specifically, as shown in FIG. 6, they are separated by 45 degrees on both sides in the circumferential direction with respect to a straight line L2 (hereinafter referred to as flat line L2) orthogonal to the axis L1 of the rotating shaft 13 and along the flat direction of the motor 1. A brush accommodating portion 25 is provided at the position.

  As shown in FIG.5 and FIG.6, each brush accommodating part 25 has comprised the square box shape opened to radial direction both sides. In other words, each brush accommodating portion 25 has a hollow shape that communicates the inside and outside of the cover portion 24. Inside each brush accommodating portion 25, a substantially rectangular parallelepiped power supply brush 26 is accommodated 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 to the inner peripheral side of the outer peripheral wall portion 24 a of the cover portion 24 and contacts the outer peripheral surface of the commutator 16 in the cover portion 24. It is configured to touch. 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.

  Between the circumferential directions of the pair of brush accommodating portions 25, a pair of support column portions 27 that protrude from the lower end surface of the base portion 22 toward the axially opposite yoke side are formed. Each brush accommodating portion 25 and each support column portion 27 are arranged so as to be collected and arranged on one side in the flat direction with respect to the axis L1 of the rotation shaft 13, and are formed symmetrically with respect to the flat line L2.

  Each support column portion 27 has a circular cross section, and has a large-diameter portion 27a at the base end portion thereof, and a support portion 27b extending from the large-diameter portion 27a in the axial direction. A coil portion of a torsion spring 28 as an urging member is extrapolated and held on the support portion 27b. The large diameter portion 27a has a larger diameter than the support portion 27b. That is, the portion that transitions from the support portion 27b to the large-diameter portion 27a is formed in a step shape, and the torsion spring 28 can be positioned in the axial direction at the step.

  A front end portion 27c (axial end portion) of the support column portion 27 is formed in a planar shape orthogonal to the axis L1, and a first positioning convex portion 27d protruding in the axial direction at the center portion of the front end portion 27c. (Gear housing side positioning portion) is formed. The positioning convex portion 27 d has a cylindrical shape with a smaller diameter than the support column portion 27. The central axis of the positioning convex portion 27d and the central axis of the support column portion 27 coincide with each other, and the portion that transitions from the positioning convex portion 27d to the support column portion 27 is formed in a stepped shape.

  One end portion of the torsion spring 28 supported by the support column portion 27 is held by the outer peripheral wall portion 24a of the cover portion 24, and the other end portion of the torsion spring 28 is in contact with the proximal end portion of the power supply brush 26 in the radial direction. Thus, the power supply brush 26 is pressed inward in the radial direction. As a result, the power supply brush 26 is urged radially inward, and the tip of the power supply brush is pressed against the outer peripheral surface of the commutator 16 in the cover portion 24.

  On the side of the cover portion 24 in the flat direction and opposite to the side where the brush accommodating portions 25 and the support column portions 27 are provided, the lower end surface of the base portion 22 is located on the side opposite to the yoke in the axial direction. A protruding column portion 31 that protrudes is formed. The protruding column portion 31 has a D-shaped cross section in which a side surface on the cover portion 24 side in the flat direction is partially cut away. The protruding column portion 31 is aligned with the rotation shaft 13 in the flat direction, and the central axis L3 of the protruding column portion 31 is parallel to the axis L1 of the rotation shaft 13 and orthogonal to the flat line L2. That is, each of the support pillars 27, the brush accommodating parts 25, and the power supply brushes 26 is a straight line that passes through the central axis L3 of the protruding pillar part 31 and the axis L1 of the rotary shaft 13 as viewed in the axial direction (in this embodiment, flat). It is configured to be line symmetric with respect to the line L2).

  The distal end portion 31a of the protruding column portion 31 has a planar shape orthogonal to the axis L1, and a second positioning convex portion 31b (protruding column portion side positioning) protruding in the axial direction is formed at the center portion of the distal end portion 31a. Part) is formed. The positioning convex portion 31 b has a cylindrical shape with a smaller diameter than the protruding column portion 31. The central axis of the positioning convex part 31b and the central axis of the protruding column part 31 coincide with each other, and the portion that transitions from the positioning convex part 31b to the protruding column part 31 is formed in a stepped shape.

  On both sides in the circumferential direction of the protruding column portion 31, holding wall portions 33 that constitute a part of the capacitor housing portion 32 are erected. The capacitor 34 is assembled from the side opposite to the yoke in the axial direction in the capacitor housing portion 32 constituted by the holding wall portions 33, the protruding column portions 31, and the cover portion 24. A choke coil 35 is held on the side of each holding wall 33 opposite to the capacitor 34. Each choke coil 35 is provided such that its axis is parallel to the axis L 1 of the motor unit 2. Each holding wall 33 and each choke coil 35 are configured to be line symmetric with respect to the flat line L2.

  The brush holder 21 includes first to third terminal holding portions 41 to 43 that hold a pair of terminals 40 a and 40 b (conductive members) disposed on the side opposite to the yoke in the axial direction from the cover portion 24. , 40b, two each. The first to third terminal holding portions 41 to 43 and the terminals 40a and 40b are configured to be line symmetric with respect to the flat line L2 of the motor 1, respectively.

  The first terminal holding portions 41 are formed to extend in the axial direction from the circular wall portion 24b of the cover portion 24 at positions on both sides in the thickness direction across the rotation shaft 13 of the motor 1. Each first terminal holding portion 41 is formed in a bifurcated shape that can hold flat terminals 40a and 40b in the thickness direction. Each second terminal holding portion 42 is erected on the lower end surface of the base portion 22 on the cover portion 24 side in the flat direction of each choke coil 35. First and second fixed recesses 42 a and 42 b are recessed in the axial direction front end surface of each second terminal holding portion 42 along the thickness direction of the motor 1. Of the first and second fixed recesses 42a and 42b, the one located inside the motor 1 in the thickness direction is referred to as a first fixed recess 42a, and the outer one is referred to as a second fixed recess 42b. The third terminal holding portion 43 is provided at a position adjacent to the pair of brush accommodating portions 25 in the circumferential direction and opposite to the support pillar portion 27. The third terminal holding portion 43 is formed to extend in the axial direction from the lower end surface of the base portion 22, and the tip end portion in the axial direction of the third terminal holding portion 43 is flat like the first terminal holding portion 41. The terminals 40a and 40b are formed in a bifurcated shape that can be sandwiched in the thickness direction.

  Each terminal 40a, 40b is formed by bending a plurality of portions after punching a conductive metal plate material into a predetermined shape by pressing. Each terminal 40 a, 40 b has a U shape when viewed from the axial direction, and is provided so that the tip of the U shape faces the flat direction of the motor 1. The terminals 40 a and 40 b are respectively disposed on both sides of the rotating shaft 13 in the thickness direction of the motor 1. That is, the rotating shaft 13 is inserted between the terminals 40a and 40b arranged in the thickness direction. The terminals 40 a and 40 b are provided so that their plate surfaces are parallel to the axis L 1 of the rotation shaft 13. Further, the terminals 40a and 40b can be assembled to the first to third terminal holding portions 41 to 43 from the side opposite to the yoke.

  Each terminal 40a, 40b includes a bent portion 50 positioned on the side opposite to the yoke in the axial direction of the choke coil 35, and a first terminal portion 51 and a second terminal extending linearly from the bent portion 50 in the flat direction when viewed in the axial direction. The bent portion 50 and each of the terminal portions 51 and 52 are configured in a U shape when viewed in the axial direction. The first and second terminal portions 51 and 52 are arranged in the thickness direction (axial orthogonal direction) of the motor 1 and have the same direction (a flat direction and a direction opposite to an insertion direction of a connection terminal 72a described later). It is configured to face. The first terminal portion 51 overlaps the circular wall portion 24b of the cover portion 24 and the commutator 16 in the axial direction, while the second terminal portion 52 is disposed at a position not overlapping the cover portion 24 in the axial direction.

  The first terminal portion 51 has a tuning fork shape that is divided into two forks in the axial direction, and has a shape that opens in a flat direction when viewed from the thickness direction of the motor 1. Specifically, the first terminal portion 51 has a pair of first and second extending portions 51b and 51c extending from the base end portion 51a in the flat direction (a direction opposite to the insertion direction of the connection terminal 72a). It is bifurcated. The first and second extending portions 51b and 51c are formed so as to be aligned in the axial direction, and at the leading ends of the extending portions 51b and 51c, contact protrusions projecting in directions approaching each other. 51d is formed.

  The first and second extending portions 51 b and 51 c of the first terminal portion 51 are sandwiched in the thickness direction of the motor 1 by the first terminal holding portion 41 of the brush holder 21. In other words, the first terminal portion 51 is held by the first terminal holding portion 41 at a position closer to the distal end side than the base end portion 51a that is divided into two forks. Of the pair of extending portions 51b and 51c, the second extending portion 51c on the yoke 11 side is formed with a locking convex portion 51e protruding toward the cover portion 24 in the axial direction. 51e can contact | abut with respect to the 1st terminal holding | maintenance part 41 in the flat direction (insertion direction of the connection terminal 72a) of the motor 1. As shown in FIG.

  Further, in the portion corresponding to the second terminal holding portion 42 in the first terminal portion 51, a convex portion 51f shown in FIG. 4 protruding toward the cover portion 24 in the axial direction is formed, and this convex portion 51f is the second terminal. The first terminal portion 51 is held with respect to the second terminal holding portion 42 by being fitted into the first fixed recess 42 a of the holding portion 42. Further, the second terminal portion 52 is also formed with the same convex portion 52a shown in FIG. 5, and the convex portion 52a is fitted into the second fixed concave portion 42b of the second terminal holding portion 42, whereby the second terminal portion. 52 is held with respect to the second terminal holding portion 42. The movement of the terminals 40a and 40b in the flat direction is regulated by the fitting of the convex portion 51f to the first fixed concave portion 42a and the fitting of the convex portion 52a to the second fixed concave portion 42b. It has become. Further, the second terminal portion 52 is sandwiched in the thickness direction of the motor 1 by the axial end portion of the third terminal holding portion 43.

  Thus, in each terminal 40a, 40b held by the brush holder 21, a pigtail 26a extending from the nearest power supply brush 26 is welded to the end of the second terminal portion 52 in the flat direction of the motor 1. Thereby, the second terminal portion 52 is electrically connected to the power supply brush 26 via the pigtail 26a.

  Further, the pair of connection end portions 34a extending from the capacitor 34 are respectively formed at the base end portions 51a of the first terminal portions 51 of the terminals 40a and 40b (the boundary portions between the first terminal portions 51 and the bent portions 50). It is welded and electrically connected to the part 51g. Further, the connection end portion 35a of each choke coil 35 is welded and electrically connected to the second terminal portion 52 of the nearest terminal 40a, 40b. The thermistor 36 arranged on the outer side in the thickness direction is electrically connected to the second terminal portion 52 of one terminal 40b (the lower terminal in FIG. 6).

[Configuration of deceleration unit]
As shown in FIG. 3, the speed reduction unit 3 includes a gear housing 61 and a speed reduction mechanism 62 accommodated in the gear housing 61.

  As shown in FIG. 7, three screw holes 61 b shown in FIG. 7 are formed in the end surface 61 a on the yoke 11 side of the gear housing 61. The end surface 61a is in axial contact with the flange portion 11b of the yoke 11 and is screwed into each screw hole 61b via each screw insertion hole 11c shown in FIG. 6 formed in the flange portion 11b. It is fixed to the flange portion 11b by a single screw 63 (only two are shown in FIGS. 1 to 4).

  On the end surface 61a of the gear housing 61 on the yoke 11 side, a holder accommodating portion 64 that opens toward the yoke 11 side in the axial direction is formed on the radially inner side of each screw hole 61b. A part of the brush holder 21 of the motor unit 2, the commutator 16, and the rotary shaft 13 are configured to enter the holder accommodating unit 64.

  The holder accommodating portion 64 has a pair of opposing wall portions 64 a that oppose the thickness direction of the motor 1 and a pair of opposing wall portions 64 b and 64 c that oppose the flat direction of the motor 1. When viewed in the axial direction, the opposing wall portions 64a in the thickness direction are linear in the flat direction, and the opposing wall portions 64b and 64c in the flat direction are curved to protrude radially outward.

  As shown in FIGS. 2, 3, and 7, a pair of opposing wall portions in the flat direction (opposing wall portion 64 b on the connector portion 4 side) protrudes in the direction perpendicular to the axis inside the holder housing portion 64. The protruding wall portion 65 is formed. In addition, each protrusion wall part 65 is formed so that it may become line symmetrical with respect to the flat line L2. Each protruding wall portion 65 has a first end surface 65a that is in a planar shape orthogonal to the thickness direction of the motor 1, and a second end surface 65b that is orthogonal to the first end surface 65a. Yes. The end face (axial end face 65c) on the axial yoke 11 side of each protruding wall portion 65 has a planar shape orthogonal to the axis L1. The axial end surface 65c of each projecting wall 65 is located on the same plane.

  The first end faces 65a of the protruding wall portions 65 are opposed to each other in the thickness direction. A circular first positioning recess 65d is provided in the axial end surface 65c of each protruding wall 65, and the pair of first positioning protrusions 27d of the brush holder 21 are provided in the positioning recess 65d, respectively. It is inserted. In addition, a protruding portion 66 that protrudes radially inward from the central portion in the thickness direction is formed on the opposite wall portion 64c opposite to the side on which the protruding wall portion 65 is provided. An end surface 66a on the axial yoke 11 side of the projecting portion 66 is located on the same plane as the axial end surface 65c of the projecting wall portion 65, and a circular second positioning recess 66b is provided in the end surface 66a. The second positioning projection 31b of the brush holder 21 is fitted into the positioning recess 66b. As described above, the first positioning convex portions 27d and the second positioning convex portions 31b of the brush holder 21 are fitted into the first positioning concave portions 65d and the second positioning concave portions 66b of the gear housing 61, respectively. Thus, the brush holder 21 and the gear housing 61 are positioned in the direction perpendicular to the axis.

  As shown in FIG. 7, a reference surface 65e formed by raising the periphery of the first positioning recess 65d is formed on the axial end surface 65c of each protruding wall portion 65. In addition, a reference surface 66c formed by raising the periphery of the second positioning recess 66b is formed on the axial end surface 66a of the protrusion 66. Each of the reference surfaces 65e and 66c has a planar shape and is formed on the same plane orthogonal to the axis L1 of the rotation shaft 13. The reference surface 65e of each protruding wall 65 is in axial contact with the tip 27c of each support column 27, and the reference surface 66c of the protruding 66 is in axial contact with the tip 31a of the protruding column 31, whereby the brush holder 21 is positioned in the axial direction. The reference surfaces 65e and 66c have a very small amount of protrusion in the axial direction, and are not shown in FIGS. Since the reference surfaces 65e and 66c are locally formed, it is easy to inspect the axial position and flatness of the reference surfaces 65e and 66c, and make the reference surfaces 65e and 66c the same plane. It is also easier to adjust.

  As shown in FIGS. 2, 3, and 7, a connector mounting portion 67 is formed on the side surface of the gear housing 61 on the side opposite to the wheel housing portion in the flat direction of the motor 1. The connector portion 4 is assembled to the connector mounting portion 67 so as to be detachable from the flat direction. The connector mounting portion 67 is formed with an insertion port 68 that opens to the side opposite to the wheel accommodating portion in the flat direction. The wall portion of the insertion port 68 on the motor unit 2 side is constituted by the protruding wall portion 65, and the insertion port 68 communicates with the holder accommodating portion 64 inside the gear housing 61. That is, the holder accommodating portion 64 is communicated with the outside of the gear housing 61 through the insertion port 68. The insertion port 68 has a quadrangular shape when viewed from the opening direction.

  As shown in FIG. 2 and FIG. 3, the connector unit 4 performs a fixed part 71 fixed to the connector mounting part 67, a control IC 72 inserted into the insertion port 68, and input / output of electric signals and power feeding. And an external connection portion 73 to which an external connector (not shown) is connected. The fixing portion 71 is fixed to the connector mounting portion 67 by the pair of locking pieces 71a being locked by locking projections 67a formed at both ends in the axial direction of the connector mounting portion 67, respectively. Yes. The connector mounting portion 67 and the fixing portion 71 of the connector portion 4 are sealed to prevent liquid from entering.

  The fixed portion 71 is provided with a rectangular parallelepiped control IC 72 extending in the flat direction of the motor 1. A flat connection terminal 72 a is provided at the front end portion (end portion in the flat direction) of the control IC 72 so as to protrude in the flat direction of the motor 1. A pair of connection terminals 72a are provided side by side in the thickness direction of the motor 1 (only one is shown in FIGS. 2 to 4). The control IC 72 is inserted into the insertion port 68 of the connector mounting portion 67 in the flat direction. The pair of connection terminals 72a of the control IC 72 are the first and second extending portions of the tuning-fork-shaped first terminal portion 51 of the pair of terminals 40a and 40b held by the brush holder 21 in the holder accommodating portion 64. It is press-fitted between 51b and 51c. As a result, the connection terminal 72a is electrically sandwiched between the first and second extending portions 51b and 51c of the first terminal portion 51 in the axial direction between the contact protrusions 51d of the respective distal ends. It is connected. Further, an opening 73a shown in FIG. 3 is formed in the external connection portion 73 of the connector portion 4, and an external connection terminal 73b that is electrically connected to the control IC 72 is provided in the opening 73a. ing. The external connection terminal 73 b is electrically connected to the external connector attached to the external connection portion 73.

  The gear housing 61 is formed with a vent hole 81 communicating with the outside from an inner side opening portion 81a shown in FIG. 7 formed in a wall portion 68a of the insertion port 68 on the side opposite to the motor portion. The opening 81 a on the inner side of the vent hole 81 is formed at a position overlapping the gap G between the protruding wall portions 65 arranged in the thickness direction of the motor 1 in the axial direction. For this reason, when the gear housing 61 is formed, a slide die (not shown) for forming the inner opening 81a of the vent hole 81 can be pulled out from the gap G between the protruding wall portions 65 in the axial direction. While configured to be able to do so, an increase in the size of the gear housing 61 in the direction perpendicular to the axis is suppressed.

  The vent hole 81 is for preventing a pressure from being concentrated locally on a seal portion (for example, the seal member S) that seals the gear housing 61 by eliminating the pressure difference between the inside and outside of the gear housing 61. The vent hole 81 is provided with a waterproof sheet (not shown) that prevents water from entering the gear housing 61 while allowing ventilation inside and outside the gear housing 61. The holder accommodating portion 64 and a wheel accommodating portion 61e described later are communicated with each other through a communicating hole 64d penetrating in the axial direction formed on both sides in the circumferential direction of the protruding portion 66.

  The holder accommodating portion 64 communicates with the clutch accommodating portion 61c at the lower portion in the axial direction (the portion opposite to the yoke) and the worm accommodating portion 61d at the lower portion in the axial direction. A worm shaft 82 is supported by the worm housing portion 61d so as to be rotatable about the axis L1, and the worm shaft 82 and the rotating shaft 13 of the motor portion 2 are connected via a clutch 83 housed in the clutch housing portion 61c. Are connected. The clutch 83 transmits the rotational force of the rotary shaft 13 to the worm shaft 82, and operates such that when a rotational force is input from the worm shaft 82 side, a braking force is generated and its rotation is restricted. It is. The clutch 83 is configured such that the connecting portion on the side connected to the rotary shaft 13 is located between the terminals 40 a and 40 b of the brush holder 21. Thereby, the enlargement of the axial direction of the motor 1 is suppressed.

  A wheel housing portion 61e that communicates with the worm housing portion 61d and that accommodates the disc-shaped worm wheel 84 that meshes with the worm shaft 82 is formed on the side of the worm housing portion 61d in the direction orthogonal to the axis. Yes. The worm wheel 84 is supported so as to be rotatable about an axis parallel to the thickness direction of the motor 1. The worm shaft 82 and the worm wheel 84 constitute a speed reduction mechanism 62. The rotational force of the rotary shaft 13 is decelerated by the worm shaft 82 and the worm wheel 84 and rotates integrally with the worm wheel 84 as shown in FIG. 85 is output. The output shaft 85 protrudes to the outside of the gear housing 61 and is connected to a vehicle window glass via a window regulator (not shown).

Next, the operation of the above embodiment will be described.
The electric power supplied from the external connector attached to the connector unit 4 is supplied from the connection terminal 72a of the control IC 72 to the commutator 16 of the armature 14 through the terminals 40a and 40b and the power supply brushes 26. Then, the armature 14 (rotary shaft 13) is rotationally driven, and the rotational driving force of the rotational shaft 13 is transmitted to the worm shaft 82 via the clutch 83 and decelerated by the worm shaft 82 and the worm wheel 84. And output from the output shaft 85. Then, the window glass is lowered or raised through a window regulator connected to the output shaft 85 according to the rotation direction of the output shaft 85.

  Further, in this configuration, the terminals 40a and 40b are positioned on the opposite side of the commutator 16 from the yoke 11, and at least a part of the terminals 40a and 40b overlaps the commutator 16 in the axial direction. 21 is held. Thereby, the enlargement to the direction orthogonal to the axis of the motor 1 is suppressed. The terminals 40a and 40b are formed in a substantially U shape from first and second terminal portions 51 and 52 extending in parallel with the axis orthogonal direction (flat direction) and facing the same direction, and a bent portion 50 connecting them. ing. Thereby, the connection terminal 72a of the connector part 4 and the electric power supply brush 26 are each arrange | positioned in the vicinity of the 1st terminal part 51 and the 2nd terminal part 52 of each terminal 40a, 40b, and the various connected with the terminals 40a, 40b. It is possible to arrange the electrical components (capacitor 34 and choke coil 35) in the vicinity of the connection portion (connection portion 51g, etc.) with the terminals 40a and 40b. In addition, while facilitating connection by arranging them in this manner, the power supply brush 26, the capacitor 34, the choke coil 35, and the connection terminals 72a of the connector unit 4 are all arranged side by side in a direction parallel to the axis orthogonal direction. Since it becomes unnecessary, the enlargement of the motor 1 in the direction perpendicular to the axis can be suppressed.

  In the motor 1 as described above, when the motor part 2 is assembled to the gear housing 61, the first positioning convex part 27d of each support pillar part 27 and the second positioning convex part of the protruding pillar part 31 are provided. 31 b is fitted into the first positioning recess 65 d of each protruding wall 65 of the gear housing 61 and the second positioning recess 66 b of the protruding 66. Thereby, the brush holder 21 and the gear housing 61 are positioned in the direction orthogonal to the axis. The protruding wall portion 65 also serves to receive the brush powder falling from the brush holder 21 side.

  Further, the distal end portion 27c of each support column portion 27 and the distal end portion 31a of the protruding column portion 31 are respectively an axial end surface 65c (specifically, a reference surface 65e) of each protruding wall portion 65 and an axial end surface 66a ( Specifically, it is in contact with the reference surface 66c) in the axial direction. Thereby, the brush holder 21 is positioned in the axial direction, and the movement of the brush holder 21 in the axial direction is restricted. As a result, the brush holder 21 is stably supported.

  Here, since the first positioning convex portion 27d is provided at the distal end portion 27c of the support column portion 27, it is necessary to make the brush holder 21 large in the direction perpendicular to the axis in order to make a space for arranging the positioning convex portion 27d. Disappears. For this reason, while providing the positioning convex part 27d in the brush holder 21, the enlargement to an axial orthogonal direction is prevented.

  A control IC 72 of the connector portion 4 is inserted into the insertion port 68 of the gear housing 61, and an axial end surface 65 c on the opposite side of the control wall 72 constituting the insertion port 68 from the control IC 72. A first positioning recess 65d is formed. As a result, the positioning of the brush holder 21 and the gear housing 61 in the direction perpendicular to the axis is performed on the motor unit 2 side with respect to the control IC 72 inserted in the insertion port 68, and therefore the first positioning convex portion on the brush holder 21 side. Interference between 27d and the control IC 72 is prevented.

Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, the terminals 40a and 40b held by the brush holder 21 are connected to the first and second terminal portions 51 and 52 extending in parallel to the axial orthogonal direction (flat direction) and facing the same direction. It is formed in a substantially U-shape from the connecting bent portion 50. The first terminal portion 51 is connected to the connection terminal 72 a of the connector portion 4, and the second terminal portion 52 is connected to the pigtail 26 a extending from the power supply brush 26. Thereby, the connection terminal 72a of the connector part 4 and the electric power supply brush 26 are each arrange | positioned in the vicinity of the 1st terminal part 51 and the 2nd terminal part 52 of each terminal 40a, 40b, and the various connected with the terminals 40a, 40b. It becomes possible to arrange the electrical components (capacitor 34 and choke coil 35) in the vicinity of the connection portion (connection portion 51g, etc.) with the terminals 40a and 40b. And while facilitating the connection by arranging them in this way, all of the power supply brush 26, the capacitor 34, the choke coil 35, and the connection terminal 72a of the connector portion 4 are arranged side by side in a direction parallel to the axis orthogonal direction. Since it becomes unnecessary, it becomes possible to suppress the enlargement of the motor 1 in the direction perpendicular to the axis.

  (2) In the present embodiment, the terminals 40 a and 40 b are arranged at positions on the opposite side of the yoke 11 from the power supply brush 26, the capacitor 34, and the choke coil 35. Thereby, the terminals 40a and 40b can be arranged so as to overlap the capacitor 34 and the choke coil 35 or the power supply brush 26 in the axial direction. For this reason, the capacitor 34 and the choke coil are prevented from being enlarged in the direction perpendicular to the axis of the motor 1 by disposing the terminals 40a and 40b on the sides of the capacitor 34 and the choke coil 35 or the power supply brush 26 in the direction perpendicular to the axis. 35 or the power supply brush 26 and the terminals 40a and 40b can be more easily connected.

  (3) In the present embodiment, the terminals 40 a and 40 b have a plate shape and are arranged so that their plate surfaces are parallel to the axis L <b> 1 of the motor unit 2. For this reason, it is possible to reduce the size of the terminals 40a and 40b in the direction perpendicular to the axis, and as a result, it is possible to more suitably prevent the motor 1 from being enlarged in the direction perpendicular to the axis.

  (4) In the present embodiment, the first and second terminal portions 51 and 52 of the terminals 40a and 40b are configured to be aligned in the direction perpendicular to the axis of the motor unit 2, and therefore the terminals 40a and 40b are viewed from the axial direction. It is almost U-shaped. For this reason, while enlarging the connection between the power supply brush 26, the capacitor 34, the choke coil 35, and the connection terminal 72a of the connector portion 4 and the terminals 40a and 40b, the enlargement of the motor 1 in the direction perpendicular to the axis is suitably suppressed. It becomes possible.

  (5) In the present embodiment, the commutator 16 and the power supply brush 26 are disposed outside the yoke 11, and the terminals 40a and 40b are positioned on the opposite side of the commutator 16 from the yoke 11, and the terminal 40a. , 40b is disposed at a position where at least a part of the commutator 16 overlaps the commutator 16 in the axial direction. For this reason, it becomes possible to suppress the enlargement of the motor 1 in the direction orthogonal to the axis.

  (6) In the present embodiment, the brush holder 21 is provided with first to third terminal holding portions 41 to 43 capable of assembling the terminals 40a and 40b from the side opposite the yoke 11 in the axial direction. Thereby, since the terminals 40a and 40b can be assembled to the brush holder 21 from the side opposite to the yoke 11 in the axial direction, in the motor 1 in which the commutator 16 and the power supply brush 26 are disposed outside the yoke 11, the assemblability is improved. Can contribute.

  (7) In this embodiment, the brush holder 21 has the cover part 24 which covers the end surface of the commutator 16 on the side opposite to the yoke 11 in the axial direction. As a result, the cover 24 of the brush holder 21 covers the end surface of the commutator 16 on the side opposite to the yoke 11 in the axial direction. Can be suppressed. Further, since the pair of first terminal holding portions 41 that respectively hold the terminals 40 a and 40 b are provided in the cover portion 24, at least a part of the commutator 16 is located on the opposite side of the yoke 11 from the commutator 16. It becomes easy to arrange the terminals 40a and 40b at positions overlapping in the axial direction.

  (8) In this embodiment, the terminals 40a and 40b have a first terminal portion 51 having a bifurcated shape, and the connection terminal 72a of the connector portion 4 is a bifurcated portion (first and second portions) of the first terminal portion 51. Inserted between the extended portions 51b and 51c) and sandwiched by the elastic force of the bifurcated portion. For this reason, the connection terminal 72a of the connector part 4 and the terminals 40a and 40b can be easily connected without welding or the like.

  (9) In the present embodiment, each first terminal holding portion 41 of the brush holder 21 holds the first terminal portion 51 at a position closer to the distal end than the proximal end portion 51a that is divided into two forks. For this reason, the position of the bifurcated portion of the first terminal portion 51 sandwiching the connection terminal 72a is maintained, and thereby, for example, vibration of the bifurcated portion (first and second extending portions 51b and 51c) of the first terminal portion 51 is suppressed. be able to. As a result, the connection stability between the terminals 40a and 40b and the connection terminal 72a can be improved.

  (10) In the present embodiment, the terminals 40a and 40b have a locking projection 51a that can come into contact with the brush holder 21 in the connection direction of the connection terminal 72a. Thereby, the movement of the terminals 40 a and 40 b in the connection direction of the connection terminal 72 a can be restricted by the locking convex portion 51 a that can contact the brush holder 21. For this reason, when connecting the connection terminal 72a to the terminals 40a and 40b, the movement of the terminals 40a and 40b in the connection direction is suppressed, and as a result, the terminals 40a and 40b and the connection terminal 72a can be reliably connected. .

  (11) In the present embodiment, the terminals 40 a and 40 b have a plate shape and are arranged so that their plate surfaces are parallel to the axis of the motor unit 2. For this reason, it is possible to reduce the size of the terminals 40a and 40b in the direction perpendicular to the axis, and as a result, it is possible to more suitably prevent the motor 1 from being enlarged in the direction perpendicular to the axis.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the first and second terminal portions 51 and 52 of the terminals 40a and 40b are arranged in the direction perpendicular to the axis of the motor unit 2 (the terminals 40a and 40b are substantially U-shaped when viewed from the axial direction). However, the present invention is not limited to this. For example, as shown in FIG. 8, the first and second terminal portions 51 and 52 of the terminals 40a and 40b are arranged in the axial direction of the motor portion 2 (the terminals 40a and 40b are substantially U-shaped when viewed from the direction perpendicular to the axis. May be configured. Even in such a configuration, it is possible to obtain the same effect as that of the above embodiment. In the configuration shown in FIG. 8, the first terminal holding part 41 in the above embodiment is omitted, and the third terminal holding part 43 is connected to the first terminal part 51 (first and second extending parts 51b, 51c) and the first terminal part. The two terminal portions 52 are held. Further, the holding portion 42c extending in the axial direction is provided upright on the second terminal holding portion 42 in which the first and second fixing recesses 42a and 42b of the above embodiment are omitted, and the first and second terminals are provided at the holding portion 42c. The parts 51 and 52 are sandwiched in the thickness direction.

  In the above embodiment, the terminals 40a and 40b are disposed at positions on the opposite side of the commutator 16 from the yoke 11, and at least a part of the terminals 40a and 40b overlaps the commutator 16 in the axial direction. However, it is not particularly limited to this. For example, the terminals 40a and 40b may be disposed on the side of the commutator 16 in the direction perpendicular to the axis.

  In the above embodiment, the first terminal portion 51 that is the connection portion with the connection terminal 72a is formed in a tuning fork shape in the terminals 40a and 40b. However, the present invention is not particularly limited to this, and the first terminal portion 51 The shape and the connection configuration with the connection terminal 72a may be appropriately changed according to the specification.

  In the above embodiment, the terminals 40a and 40b are arranged so that their plate surfaces are parallel to the axis L1 of the motor unit 2, but other than this, for example, the terminals 40a and 40b are arranged so that the plate surfaces are orthogonal to the axis L1. May be.

  -In above-mentioned embodiment, you may change suitably the arrangement | positioning of the 1st-3rd terminal holding | maintenance parts 41-43, and the structure which hold | maintains each terminal 40a, 40b according to a specification. For example, you may provide all the 1st-3rd terminal holding parts 41-43 in the cover part 24. FIG.

  -In above-mentioned embodiment, it was set as the structure which inserts control IC72 of the connector part 4 in the insertion port 68, However It is not limited to this in particular, The insertion part inserted in the insertion port 68 in the connector part 4 You may change a structure suitably according to a specification. Moreover, it is good also as a connector part provided with the connecting terminal connected to terminal 40a, 40b, without providing control IC72.

In the above embodiment, the torsion spring 28 is used as the urging member that presses the power supply brush 26, but other springs may be used.
In the above-described embodiment, the speed reduction mechanism 62 is configured by the worm shaft 82 and the worm wheel 84, but is not particularly limited thereto, and may be configured by, for example, a spur gear or the like.

  In the above embodiment, the present invention is applied to the motor 1 used as the drive source of the power window device. However, the present invention is not limited to this, and may be applied to a motor used for a drive source other than the power window device. .

  DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Motor part, 3 ... Deceleration part, 4 ... Connector part, 11 ... Yoke housing (yoke), 11a ... Opening end part, 13 ... Rotating shaft, 16 ... Commutator, 21 ... Brush holder, 24 ... Cover part, 26 ... Power supply brush, 26a ... Pigtail (conductor), 34 ... Capacitor (electric part), 35 ... Choke coil (electric part), 40a, 40b ... Terminal (conductive member), 41-43 ... First to first 3 terminal holding part, 50 ... bent part (intermediate part), 51 ... first terminal part, 51a ... proximal end part of the first terminal part, 51e ... locking convex part (locking part), 52 ... second terminal part , 61 ... gear housing, 62 ... reduction mechanism, 72a ... connection terminal, L1 ... axis of the motor part (rotating shaft), L2 ... flat wire.

Claims (5)

A brush holder for holding a power supply brush for supplying power to the commutator, an electrical component, the power supply brush, and a conductive member electrically connected to the electrical component is provided at the opening end of the yoke housing on the axial output side. Motor unit,
A speed reducing portion having a speed reducing mechanism for decelerating and outputting the rotational driving force of the motor portion in a gear housing assembled to the opening end portion of the yoke housing;
A connector part having a connection terminal assembled to the gear housing and electrically connected to the conductive member;
The commutator, the power supply brush, and the electrical component are disposed outside the yoke housing,
The conductive member is formed in a substantially U shape from a first terminal portion and a second terminal portion that extend in parallel to the direction perpendicular to the axis and face each other, and an intermediate portion that connects the first terminal portion and the second terminal portion. The motor is characterized in that the connection terminal of the connector part is connected to the second terminal part, and the conductive wire extending from the power supply brush is connected to the second terminal part. The motor according to claim 1,
The motor according to claim 1, wherein the conductive member is disposed at a position opposite to the yoke housing with respect to the power supply brush and the electrical component. The motor according to claim 1 or 2,
The said electrically-conductive member makes plate shape, and is arrange | positioned so that the plate | board surface may become in parallel with the axis line of the said motor part. The motor according to any one of claims 1 to 3,
The motor according to claim 1, wherein the first and second terminal portions of the conductive member are arranged in a direction perpendicular to the axis of the motor portion. The motor according to any one of claims 1 to 3,
The motor according to claim 1, wherein the first and second terminal portions of the conductive member are arranged in an axial direction of the motor portion.

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