JP5577233B2 - motor - Google Patents

Description

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

  Conventionally, as described in Patent Document 1, for example, this type of motor is provided at a motor part having a rotor in a yoke housing and an output side end part of the motor part, and the rotational driving force of the motor part is reduced. And a speed reducer. 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. There is provided a brush holder for holding a power supply brush for supplying the terminal and a terminal electrically connected to the power supply brush. 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.

  In such a motor, the gear housing and the brush holder are formed with positioning portions (positioning protrusions and positioning recesses in Patent Document 1) for positioning them in the direction perpendicular to the axis. When the motor part and the speed reduction part are assembled, the positioning part on the gear housing side and the positioning part on the brush holder side are engaged so that the motor part having the brush holder and the gear housing are positioned in the direction perpendicular to the axis. It has come to improve.

JP 2003-18794 A

  By the way, in the above motors, the structure which provides the connector part for connecting with an external connector as a different body from a brush holder and a gear housing can be considered. In such a motor, the connector portion is provided with a connection terminal at an insertion portion inserted into the inside from an insertion port formed in the gear housing, and the connection terminal is held by the brush holder in the gear housing. To be connected. In such a motor, depending on the positional relationship between the insertion port into which the insertion portion of the connector portion is inserted and each positioning portion, the insertion portion of the connector portion and each positioning portion interfere with each other during assembly. There was a risk of deteriorating sex.

  The present invention has been made to solve the above-described problems, and its purpose is to prevent interference between the positioning portion for positioning the brush holder and the gear housing in the direction perpendicular to the axis and the insertion portion of the connector portion. It is to provide a motor that can be used.

  In order to solve the above problem, the invention according to claim 1 is characterized in that a brush holder for holding a power supply brush for supplying power to the commutator and a terminal electrically connected to the power supply brush is provided in the axial direction of the yoke housing. Deceleration having a motor part provided at the opening end on the output side and a reduction mechanism for decelerating and outputting the rotational driving force of the motor part in the gear housing assembled to the opening end of the yoke housing And a connector portion having an insertion portion that is inserted into an insertion port formed in the gear housing and a connection terminal that is provided in the insertion portion and is electrically connected to the terminal. At the end of the housing on the yoke housing side, at least the rotation shaft of the motor unit and a housing part in which the terminal is disposed communicate with the insertion port. The gear housing is provided with a protruding wall portion that constitutes a wall portion on the motor portion side of the insertion port so as to protrude inside the housing portion, and the insertion portion in the protruding wall portion A gear housing side positioning portion that engages with a holder side positioning portion provided on the brush holder and positions the brush holder and the gear housing in the direction perpendicular to the axis is provided on the surface opposite to the surface It is characterized by.

  In this invention, the gear housing side positioning portion provided on the surface of the protruding wall portion opposite to the insertion portion is engaged with the holder side positioning portion provided on the brush holder, so that the brush holder and the gear housing are pivoted. Positioned in the orthogonal direction. As a result, since the positioning of the brush holder and the gear housing in the direction perpendicular to the axis is performed on the motor unit side with respect to the insertion portion of the connector portion inserted into the insertion port, each positioning portion on the brush holder side and the gear housing side Interference with the insertion portion of the connector portion can be prevented.

  According to a second aspect of the present invention, in the motor according to the first aspect, the gear housing side positioning portion is a positioning concave portion that is recessed in the axial direction, and the holder side positioning portion projects in the axial direction. It is a positioning convex part inserted in the positioning concave part.

  In this invention, the gear housing side positioning portion is a positioning recess recessed in the axial direction, and one holder side positioning portion is a positioning projection protruding in the axial direction and fitted into the positioning recess. And the brush holder and the gear housing can be positioned in the direction perpendicular to the axis by the positioning portions on the gear housing side.

  According to a third aspect of the present invention, in the motor according to the first or second aspect, at least two of the protruding wall portions are provided along an axis perpendicular to the axis, and the gear housing has the insertion port. A vent hole communicating from the inner side opening formed in the wall portion on the opposite motor portion side to the outside is formed, and the inner side opening portion of the vent hole is in the axial direction with the gap portion between the protruding wall portions It is characterized by overlapping.

  In the present invention, the protruding wall portion is divided so that the gap portion and the opening portion on the inner side of the vent hole overlap in the axial direction. Therefore, at the time of molding the gear housing, the gear housing is configured so that the slide mold for molding the opening on the inner side of the vent hole can be pulled out from the gap portion between the projecting wall portions in the axial direction. The increase in size in the direction perpendicular to the axis can be suppressed.

According to a fourth aspect of the present invention, in the motor according to any one of the first to third aspects, the protruding wall portion is in axial contact with the brush holder.
In this invention, since the protruding wall portion of the gear housing is in contact with the brush holder in the axial direction, the brush holder can be positioned in the axial direction to restrict movement in the axial direction. As a result, the brush holder can be stably supported.

  According to a fifth aspect of the present invention, in the motor according to any one of the first to fourth aspects, the gear housing side positioning portion provided on the protruding wall portion is used as a first gear housing side positioning portion. In the gear housing, a second gear housing side positioning portion for positioning in the direction perpendicular to the axis with respect to the brush holder sandwiches the axis of the motor portion with respect to the protruding wall portion and the insertion portion of the connector portion. It is characterized by being provided on the opposite side.

  In this invention, the second gear housing side positioning portion for positioning in the direction perpendicular to the axis with respect to the brush holder is provided on the opposite side of the protruding wall portion and the insertion portion of the connector portion across the axis of the motor portion. It is done. The second gear housing side positioning portion is provided separately from the gear housing side positioning portion of the protruding wall portion, but is provided at a portion opposite to the insertion portion of the connector portion across the axis of the motor portion. Therefore, the second gear housing side positioning portion is prevented from interfering with the insertion portion of the connector portion. Thus, while preventing interference between each positioning portion of the gear housing and the insertion portion, the gear housing side positioning portion and the second gear housing side positioning portion can be arranged on both sides of the motor axis, respectively. Thus, the gear housing and the brush holder can be positioned with good balance in the direction perpendicular to the axis.

  According to a sixth aspect of the present invention, in the motor according to the fifth aspect, an end surface of the protruding wall portion provided with the first gear housing side positioning portion, and the second gear housing side positioning in the gear housing. Each of the end surfaces provided with a portion is formed such that a reference surface formed by raising the periphery of the first and second gear housing side positioning portions is located on the same plane orthogonal to the axis of the motor portion, Each of the reference surfaces is in contact with the brush holder in the axial direction.

  In the present invention, since the reference surfaces around the first and second gear housing side positioning portions are in contact with the brush holder in the axial direction, the brush holder is positioned in the axial direction and moved in the axial direction. Can be regulated. As a result, the brush holder can be stably supported. In addition, since the reference surface is locally formed, it is easy to inspect the axial position and flatness of each reference surface, and it is also easy to make adjustments to make each reference surface the same plane. be able to. Thereby, the precision which makes each reference plane contact | abutted with the support pillar part and protrusion pillar part of a brush holder the same plane improves, As a result, a gear housing and a brush holder can be positioned stably in an axial direction. .

  A seventh aspect of the present invention is the motor according to any one of the first to sixth aspects, wherein the brush holder is supported by the support column portion protruding to the gear housing side and the support column portion. An urging member that presses the power supply brush against the commutator is provided, and the holder-side positioning portion is provided at a distal end portion of the support column portion.

  In the present invention, the brush holder is provided with a support column portion for supporting the biasing member that presses the brush holder so as to protrude toward the gear housing. And the holder side positioning part which engages with the gear housing side positioning part of a protrusion wall part and positions a brush holder and a gear housing in an axis orthogonal direction is provided in the front-end | tip part of this support pillar part. This eliminates the need to increase the size of the brush holder in the direction perpendicular to the axis in order to make a space for positioning the holder side positioning portion, thus preventing an increase in size in the direction perpendicular to the axis while providing the holder side positioning portion on the brush holder. Can do.

According to an eighth aspect of the present invention, in the motor according to the seventh aspect, the tip end portion of the support column portion is in axial contact with the protruding wall portion of the gear housing. .
In this invention, since the tip end portion of the support column provided on the brush holder is in axial contact with the protruding wall portion of the gear housing, the brush holder is positioned in the axial direction to move in the axial direction. Can be regulated. As a result, the brush holder can be stably supported. In addition, since it is not necessary to provide a brush holder side portion that abuts the protruding wall portion of the gear housing in the axial direction separately from the support column portion, the gear housing and the brush holder can be positioned in the axial direction while being axially orthogonal. The enlargement in the direction can be prevented.

  According to a ninth aspect of the present invention, in the motor according to the seventh or eighth aspect, the gear housing side positioning portion provided on the protruding wall portion serves as a first gear housing side positioning portion, and the gear housing includes The second gear housing side positioning portion for positioning in the direction perpendicular to the axis with respect to the brush holder is a portion on the opposite side of the axis of the motor portion with respect to the protruding wall portion and the insertion portion of the connector portion. The brush holder is provided with a protruding column portion protruding toward the gear housing separately from the support column portion, and the protruding column portion accommodates an electrical component assembled to the brush holder. And the brush holder and the distal end portion of the projecting pillar portion are engaged with the second gear housing side positioning portion. Wherein the protruding column portion side positioning portion for positioning the Ya housing perpendicular to the axis direction is provided.

  According to the present invention, the second gear housing side positioning portion is provided separately from the first gear housing side positioning portion provided on the protruding wall portion, but the motor portion is positioned with respect to the insertion portion of the connector portion. Since the second gear housing side positioning portion is provided at a portion on the opposite side across the axis, it is prevented that the second gear housing side positioning portion interferes with the insertion portion of the connector portion. Accordingly, the first and second gear housing side positioning portions are respectively disposed on both sides of the motor axis while preventing interference between the first and second gear housing side positioning portions and the insertion portion of the connector portion. Thus, the gear housing and the brush holder can be positioned with good balance in the direction perpendicular to the axis. Further, since the protruding column part of the brush holder constitutes an electric part accommodating part for accommodating the electric part assembled to the brush holder, the brush holder is arranged in the direction perpendicular to the axis in order to make a positioning space for the positioning part. There is no need to make it large.

  According to a tenth aspect of the present invention, in the motor according to the ninth aspect, the support column portion is relative to a radial straight line passing through a central axis of the protruding column portion and an axis of the motor portion as viewed in the axial direction. A pair of support column portions are provided so as to be line symmetric, and the pair of support column portions are provided on the opposite side of the projecting column portion across the axis of the motor unit, and the tip portions of the respective support column portions And the front-end | tip part of the said protrusion pillar part is contact | abutted to the gear housing at the axial direction, It is characterized by the above-mentioned.

  In the present invention, the pair of support pillars are arranged in a radial direction passing through the center of the projecting pillar part and the axis of the motor part as viewed from the axial direction on the opposite side of the projecting pillar part across the axis of the motor part. It is provided so as to be line symmetric with respect to the straight line, and is configured to abut against the gear housing in the axial direction at each tip of the pair of support pillars and protruding pillars. For this reason, the brush holder can be stably positioned in the axial direction.

  According to an eleventh aspect of the present invention, in the motor according to the tenth aspect, the power supply brush is housed in a portion of the brush holder opposite to the protruding column portion across the axis of the motor portion. A pair of brush housing portions are provided so as to be axisymmetric with respect to a radial straight line passing through the central axis of the protruding column portion and the axis of the motor portion when viewed in the axial direction. It is arrange | positioned between the circumferential directions of the said brush accommodating part, It is characterized by the above-mentioned.

  In this invention, each brush accommodating part and each support column part are located on the opposite side of the protruding column part across the axis of the motor part, and the center of the protruding column part and the axis of the motor part as viewed from the axial direction. Are arranged so as to be line-symmetric with respect to a straight line in the radial direction that passes through each of the support pillars, and each support column part is arranged between the circumferential directions of the brush accommodating parts. Thereby, it becomes possible to comprise each brush accommodating part and each support pillar part, suppressing the enlargement to the axis orthogonal direction of a brush holder, and it can contribute to size reduction to the axis orthogonal direction of a motor.

  According to a twelfth aspect of the present invention, in the motor according to the tenth or eleventh aspect, the holder-side positioning portion and the protruding column portion-side positioning portion, and the corresponding first gear housing-side positioning portions and the corresponding The second gear housing side positioning portion is arranged on the same circle centered on the axis of the motor portion.

  In this invention, since each gear housing side positioning portion and the second gear housing side positioning portion on the opposite side across the axis of the motor portion are arranged on the same circle centering on the axis, positioning can be performed with good balance.

  Therefore, according to the above-described invention, interference between the positioning portion for positioning the brush holder and the gear housing in the direction perpendicular to the axis and the insertion portion of the connector portion can be prevented.

The side view of the motor of this embodiment. The exploded side view of a motor. Sectional drawing of a motor. 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.

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]
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. In addition, the bearing 24c shown in FIG. 3 which supports the rotating shaft 13 rotatably is provided in the center part of the circular wall part 24b. Further, as shown in FIGS. 4 and 5, the brush accommodating portion 25 extending radially outward from the outer peripheral wall portion 24 a of the cover portion 24 is spaced 90 degrees apart in the circumferential direction on the lower end surface of the base portion 22. A pair is formed. More specifically, as shown in FIG. 5, 45 degrees away from each other on both sides in the circumferential direction with respect to a straight line L2 (hereinafter referred to as a flat line L2) perpendicular 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.4 and FIG.5, 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.

  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 step 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 moves 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 disposed on the side opposite to the yoke in the axial direction from the cover portion 24, respectively. Correspondingly, two are formed. 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.

  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 of the motor 1, and the first terminal portion 51 overlaps the circular wall portion 24 b and the commutator 16 of the cover portion 24 in the axial direction, while the second terminal The part 52 is disposed at a position that does not overlap the cover part 24 in the axial direction.

  The first terminal portion 51 has a tuning fork shape that is divided into two in the axial direction at an intermediate portion in the flat direction. That is, the first terminal portion 51 has a shape that opens in the flat direction when viewed from the thickness direction of the motor 1. A tuning fork-shaped portion of the first terminal portion 51 is sandwiched in the thickness direction of the motor 1 by the first terminal holding portion 41. The first terminal portion 51 is formed with an engaging convex portion 51 a that protrudes toward the cover portion 24 in the axial direction. The engaging convex portion 51 a is flat with respect to the first terminal holding portion 41. Abut.

  Further, a convex portion (not shown) protruding toward the cover portion 24 in the axial direction is formed at a portion corresponding to the second terminal holding portion 42 in the first terminal portion 51, and this convex portion is the second terminal holding portion. The first terminal portion 51 is held with respect to the second terminal holding portion 42 by being fitted in the first fixed recess 42 a of 42. Further, a similar convex portion (not shown) is formed on the second terminal portion 52, and this convex portion is fitted into the second fixed concave portion 42 b of the second terminal holding portion 42, so that the second terminal portion 52 is formed. The second terminal holding part 42 is held. 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.

  A pair of connection end portions 34a extending from the capacitor 34 are connection portions formed at the base end portions of the first terminal portions 51 of the terminals 40a and 40b (between the first terminal portions 51 and the bent portions 50). It is welded and electrically connected to 51b. 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. In addition, the thermistor 36 arrange | positioned on the outer side of the thickness direction is electrically connected to the 2nd terminal part 52 of one terminal 40b (lower terminal in FIG. 5).

[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. 6, three screw holes 61b shown in FIG. 6 are formed in the end surface 61a of the gear housing 61 on the yoke 11 side. 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 through each screw insertion hole 11c shown in FIG. 5 formed in the flange portion 11b. A single screw 63 (only two are shown in FIGS. 1 to 3) is fixed to the flange portion 11b.

  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 6, one of the opposing walls in the flat direction (the opposing wall 64 b on the connector part 4 side) has a pair projecting in the direction orthogonal to the axis inside the holder housing 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. 6, 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 6, 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 and 3). The control IC 72 is inserted into the insertion port 68 of the connector mounting portion 67 in the flat direction. Then, the pair of connection terminals 72a of the control IC 72 are press-fitted into the tuning-fork-shaped first terminal portions 51 of the pair of terminals 40a and 40b held by the brush holder 21 in the holder housing portion 64 and are electrically connected to each other. Has been. 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 81 a shown in FIG. 6 formed in a wall portion 68 a on the side opposite to the motor portion of the insertion port 68. 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.

  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 post part 27 and the second positioning convex part 31b of the projecting post part 31 are provided. The first positioning recess 65 d of each protruding wall portion 65 of the gear housing 61 and the second positioning recess 66 b of the protruding portion 66 are respectively fitted. Thereby, the brush holder 21 and the gear housing 61 are positioned in the direction orthogonal to the axis.

  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, at the end of the gear housing 61 on the yoke 11 side, a holder accommodating portion 64 in which at least the rotation shaft 13 and the terminals 40a and 40b of the motor portion 2 are disposed is an insertion port 68. It is formed so as to communicate. Further, the gear housing 61 is provided with a protruding wall portion 65 constituting a wall portion of the insertion port 68 on the motor portion 2 side so as to protrude inside the holder housing portion 64. Then, on the surface (axial end surface 65c) opposite to the control IC 72 in the protruding wall portion 65, the first positioning convex portion 27d (holder-side positioning portion) provided on the brush holder 21 is engaged with the A first positioning recess 65d (gear housing side positioning portion) for positioning the brush holder 21 and the gear housing 61 in the direction perpendicular to the axis is provided. Accordingly, the brush holder 21 and the gear housing 61 are positioned in the direction perpendicular to the axis on the motor unit 2 side of the control IC 72 inserted into the insertion port 68. Interference between the positioning part (positioning convex part 27d and positioning concave part 65d) and the control IC 72 of the connector part 4 can be prevented.

  (2) In this embodiment, the gear housing side positioning portion is a positioning recess 65d that is recessed in the axial direction, and one holder side positioning portion protrudes in the axial direction and is inserted into the positioning recess 65d. Part 27d. For this reason, the brush holder 21 and the gear housing 61 can be positioned in the direction perpendicular to the axis by the positioning portions (positioning convex portion 27d and positioning concave portion 65d) on the brush holder 21 side and the gear housing 61 side.

  (3) In the present embodiment, two protruding wall portions 65 are provided along the axis perpendicular to the axis, and the gear housing 61 is formed on the wall portion 68 a on the side opposite to the motor portion of the insertion port 68. A vent hole 81 communicating from the inner side opening 81a to the outside is formed, and the inner side opening 81a of the vent hole 81 overlaps the gap G between the protruding wall portions 65 in the axial direction. That is, the protruding wall portion 65 is divided so that the gap portion G and the inner side opening portion 81a of the vent hole 81 overlap in the axial direction. Therefore, when the gear housing 61 is formed, the slide mold for forming the inner opening 81a of the vent hole 81 can be pulled out in the axial direction from the gap G between the protruding wall portions 65. However, the enlargement of the gear housing 61 in the direction perpendicular to the axis can be suppressed.

  (4) In the present embodiment, the protruding wall portion 65 of the gear housing 61 is in axial contact with the distal end portion 27c of the support column portion 27 of the brush holder 21, so that the brush holder 21 is positioned in the axial direction. Thus, the movement of the brush holder 21 in the axial direction can be restricted. As a result, the brush holder 21 can be stably supported. In addition, since it is not necessary to provide a portion on the brush holder 21 side in contact with the protruding wall portion 65 of the gear housing 61 in the axial direction separately from the support column portion 27, the positioning of the gear housing 61 and the brush holder 21 in the axial direction is performed. While being possible, it is possible to prevent an increase in size in the direction perpendicular to the axis.

  (5) In the present embodiment, the second positioning recess 66b is provided on the opposite side of the protruding wall portion 65 and the control IC 72 with the axis L1 of the motor portion 2 interposed therebetween. The second positioning recess 66b is provided separately from the first positioning recess 65d of the protruding wall portion 65, but is opposite to the control IC 72 of the connector portion 4 across the axis L1 of the motor portion 2. Since the second positioning recess 66b is provided at the site, it is prevented that the second positioning recess 66b interferes with the control IC 72 of the connector unit 4. Thus, while preventing the interference between the positioning protrusions 27d and 31b and the positioning recesses 65d and 66b of the gear housing 61 and the control IC 72, the first positioning recess 65d and the second positioning recess are respectively provided on both sides of the axis L1. The recess 66b can be arranged. As a result, the gear housing 61 and the brush holder 21 can be positioned with a good balance in the direction perpendicular to the axis.

  (6) In the present embodiment, the reference end formed by raising the periphery of the first and second positioning recesses 65d and 66b on the axial end surface 65c of the protruding wall portion 65 and the axial end surface 66a of the protruding portion 66, respectively. The surfaces 65e and 66c are formed so as to be located on the same plane orthogonal to the axis L1 of the motor unit 2. Since the reference surfaces 65e and 66c are in contact with the brush holder 21 in the axial direction, the brush holder 21 can be positioned in the axial direction to restrict movement in the axial direction. As a result, the brush holder 21 can be stably supported. Further, since the reference surfaces 65e and 66c are locally formed, it is possible to easily inspect the axial position and flatness of the reference surfaces 65e and 66c, and the reference surfaces 65e and 66c are arranged on the same plane. It is also possible to facilitate the adjustment for Thereby, the precision which makes each reference surface 65e, 66c contact | abutted with the support pillar part 27 and the protrusion pillar part 31 of the brush holder 21 the same plane improves, As a result, the gear housing 61 and the brush holder 21 are made into an axial direction. Positioning can be performed stably.

  (7) In the present embodiment, the brush holder 21 includes a support column portion 27 protruding toward the gear housing 61, and a torsion spring 28 that is supported by the support column portion 27 and presses the power supply brush 26 against the commutator 16. And a first positioning projection 27d is provided at the tip 27c of the support column 27. This eliminates the need to increase the size of the brush holder 21 in the direction perpendicular to the axis in order to create a space for positioning the positioning projection 27d. Therefore, the positioning in the direction orthogonal to the axis can be increased while providing the positioning projection 27d on the brush holder 21. Can be prevented.

  (8) In the present embodiment, the brush holder 21 is provided with a protruding column portion 31 protruding to the gear housing 61 side separately from the support column portion 27. The protruding column portion 31 constitutes a capacitor accommodating portion 32 for accommodating the capacitor 34 assembled to the brush holder 21, and the tip end portion 31a of the protruding column portion 31 is engaged with the second positioning recess 66b. Thus, the second positioning convex portion 31b for positioning the brush holder 21 and the gear housing 61 in the direction perpendicular to the axis is provided. Further, since the protruding column portion 31 of the brush holder 21 constitutes a capacitor housing portion 32 for housing the capacitor 34 assembled to the brush holder 21, a space for arranging the second positioning convex portion 31 b is created. Further, it is not necessary to make the brush holder 21 large in the direction perpendicular to the axis.

  (9) In this embodiment, the support column 27 is symmetrical with respect to a radial straight line (flat line L2) passing through the central axis L3 of the protruding column 31 and the axis L1 of the motor unit 2 in the axial direction. A pair of support column portions 27 are provided at opposite portions of the protruding column portion 31 across the axis L1 of the motor portion 2. And since the front-end | tip part 27c of each support pillar part 27 and the front-end | tip part 31a of the protrusion pillar part 31 are contact | abutted with respect to the gear housing 61 in the axial direction, the brush holder 21 can be positioned stably in an axial direction. it can.

  (10) In the present embodiment, the brush accommodating portion 25 that accommodates the power supply brush 26 is viewed in the axial direction at a portion opposite to the protruding column portion 31 of the brush holder 21 across the axis L1 of the motor portion 2. A pair is provided so as to be axisymmetric with respect to a radial straight line (flat line L2) passing through the central axis L3 of the protruding column part 31 and the axis L1 of the motor part 2. And each support pillar part 27 is arrange | positioned between the circumferential directions of a pair of brush accommodating part 25. As shown in FIG. Thereby, it becomes possible to constitute each brush accommodating part 25 and each support pillar part 27, suppressing the enlargement to the direction orthogonal to the axis of the brush holder 21, and it can contribute to size reduction of the motor 1 in the direction orthogonal to the axis.

  (11) In the present embodiment, the first positioning convex portion 27d and the second positioning convex portion 31b, and the corresponding first positioning concave portion 65d and second positioning concave portion 66b are provided on the axis L1 of the motor unit 2. Since they are arranged on the same circle with the center as a center, positioning can be performed with good balance.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the positioning convex portions 27d and 31b and the positioning concave portions 65d and 66b are arranged on the same circle centered on the axis L1 of the motor unit 2, but the invention is not particularly limited to this, You may change suitably according to it.

  In the above embodiment, in the gear housing 61, a pair of protruding wall portions 65 are provided on the flat connector portion 4 side, and a protruding portion 66 is provided on the opposite side in the circumferential direction (the flat wheel accommodating portion 61e side). However, the arrangement may be reversed.

-In above-mentioned embodiment, you may change suitably structures, such as the shape of the terminals 40a and 40b of the brush holder 21, according to a specification.
In the above embodiment, the first positioning convex portion 27d is provided at the distal end portion 27c of the support column portion 27. However, the present invention is not particularly limited thereto, and the position where the first positioning convex portion 27d is provided is a specification. It may be changed as appropriate according to the situation.

  In the above embodiment, the commutator 16 and the power supply brush 26 are arranged in the holder accommodating portion 64 of the gear housing 61. However, the present invention is not limited to this, and the arrangement is arranged in the yoke 11. It is good.

-In the said embodiment, you may make reverse the uneven | corrugated relationship of positioning convex part 27d, 31b and positioning concave part 65d, 66b.
In the above embodiment, two protruding wall portions 65 are provided, but the number of protruding wall portions 65 may be appropriately changed according to the specification.

  In the above embodiment, the tip 27c of the support column 27 is in contact with the gear housing 61 in the axial direction so that the brush holder 21 is positioned in the axial direction. Instead, it may be brought into contact with the gear housing 61 in the axial direction at a place other than the support column portion 27 of the brush holder 21.

  -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, 11a ... Opening end part, 13 ... Rotating shaft, 16 ... Commutator, 21 ... Brush holder, 25 ... Brush accommodating part , 26 ... power feeding brush, 27 ... support pillar part, 27c ... tip end part of the support pillar part, 27d ... first positioning convex part (holder side positioning part), 28 ... torsion spring (biasing member), 31 ... protruding pillar , 31a ... the tip of the protruding pillar part, 31b ... the second positioning convex part (protruding pillar part side positioning part), 32 ... the capacitor housing part (electric part housing part), 34 ... the capacitor (electric part), 40a, 40b ... Terminal, 61 ... Gear housing, 62 ... Deceleration mechanism, 64 ... Holder housing, 65 ... Projection wall, 65d ... First positioning recess (first gear housing side positioning), 65e, 66c ... Reference plane , 6 b ... second positioning recess (second gear housing side positioning part), 68 ... insertion port, 68a ... wall part, 72a ... connection terminal, 81 ... vent hole, 81a ... internal side opening part, G ... gap part , L1... Axis of motor part (rotating shaft), L2... Flat line, L3.

Claims (12)

A motor unit in which a brush holder for holding a power supply brush for power supply to the commutator and a terminal electrically connected to the power supply brush is provided at an opening end on the axial output side of the yoke housing;
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 portion having an insertion portion inserted into an insertion port formed in the gear housing and a connection terminal provided in the insertion portion and electrically connected to the terminal; At the end on the yoke housing side, at least the rotating shaft of the motor part and a housing part in which the terminal is disposed are formed so as to communicate with the insertion port,
The gear housing is provided with a protruding wall portion that constitutes a wall portion on the motor portion side of the insertion port so as to protrude inside the housing portion, and is opposite to the insertion portion in the protruding wall portion. A gear housing side positioning portion that engages with a holder side positioning portion provided in the brush holder and positions the brush holder and the gear housing in the direction perpendicular to the axis is provided on the surface. motor. The motor according to claim 1,
The gear housing side positioning portion is a positioning recess recessed in the axial direction,
The holder-side positioning portion is a positioning convex portion that protrudes in the axial direction and is fitted into the positioning concave portion. The motor according to claim 1 or 2,
The protruding wall portion is provided at least two along the axis orthogonal to the axis,
The gear housing is formed with a vent hole communicating with the outside from an inner opening formed in a wall portion of the insertion port on the side opposite to the motor portion, and the inner opening of the vent hole is formed on the protruding wall. A motor characterized in that it overlaps the gap between the portions in the axial direction. The motor according to any one of claims 1 to 3,
The motor according to claim 1, wherein the protruding wall portion is in axial contact with the brush holder. The motor according to any one of claims 1 to 4,
The gear housing side positioning portion provided on the protruding wall portion as a first gear housing side positioning portion,
In the gear housing, a second gear housing side positioning portion for positioning in the direction perpendicular to the axis with respect to the brush holder sandwiches the axis of the motor portion with respect to the protruding wall portion and the insertion portion of the connector portion. A motor characterized by being provided on the opposite side. The motor according to claim 5, wherein
The end face provided with the first gear housing side positioning portion in the protruding wall portion and the end face provided with the second gear housing side positioning portion in the gear housing are respectively provided on the first and second gear housing sides. The reference surface formed by raising the periphery of the positioning portion is formed so as to be located on the same plane orthogonal to the axis of the motor portion, and each reference surface is in contact with the brush holder in the axial direction. Characteristic motor. The motor according to any one of claims 1 to 6,
The brush holder is provided with a support column projecting toward the gear housing, and an urging member that is supported by the support column and presses the power supply brush against the commutator. A motor characterized in that the holder side positioning portion is provided at a tip portion. The motor according to claim 7, wherein
The motor is characterized in that a tip end portion of the support pillar portion is in axial contact with the protruding wall portion of the gear housing. The motor according to claim 7 or 8,
The gear housing side positioning portion provided on the protruding wall portion as a first gear housing side positioning portion,
In the gear housing, a second gear housing side positioning portion for positioning in the direction perpendicular to the axis with respect to the brush holder sandwiches the axis of the motor portion with respect to the protruding wall portion and the insertion portion of the connector portion. It is provided on the opposite side,
The brush holder is provided with a protruding column portion protruding to the gear housing side separately from the support column portion,
The protruding column portion constitutes an electric component accommodating portion for accommodating an electric component assembled to the brush holder, and the distal end portion of the protruding column portion is engaged with the second gear housing side positioning portion. A motor is provided with a protruding column side positioning portion for positioning the brush holder and the gear housing in the direction perpendicular to the axis. The motor according to claim 9, wherein
The support column portions are provided in a pair so as to be symmetric with respect to a radial straight line passing through the central axis of the projecting column portion and the axis of the motor portion when viewed in the axial direction, and the pair of support column portions are , Provided on the opposite side of the protruding pillar portion across the axis of the motor portion,
The motor according to claim 1, wherein a tip end portion of each of the support column portions and a tip end portion of the protruding column portion are in contact with the gear housing in the axial direction. The motor according to claim 10, wherein
A brush housing portion that houses the power supply brush is located on the opposite side of the projecting column portion of the brush holder with respect to the axis of the motor portion, and a central axis of the projecting column portion and the motor are viewed in the axial direction. A pair is provided so as to be line symmetric with respect to a radial straight line passing through the axis of the part,
A pair of said support pillar part is arrange | positioned between the circumferential directions of a pair of said brush accommodating part, The motor characterized by the above-mentioned. The motor according to claim 10 or 11,
The holder-side positioning part and the protruding column part-side positioning part, and the corresponding first gear housing-side positioning part and the second gear housing-side positioning part corresponding to the center line of the motor part are the same. A motor characterized by being arranged on a circle.

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