JP5216487B2 - Electric motor - Google Patents

Description

  The present invention relates to an electric motor that operates a driven body by driving a pair of drive cables coupled to the driven body in the axial direction.

  In a sunroof device provided in a vehicle, a pair of drive cables are connected to both sides of a roof panel (driven body) that opens and closes the opening of the roof, and the portion of the drive cable routed to the front side of the vehicle is connected to the roof. The roof panel is automatically opened and closed by being driven in the axial direction by a sunroof motor (electric motor) disposed in the vehicle.

  As such a sunroof motor, for example, as shown in Patent Document 1, a reduction gear is attached to the motor body, and a drive gear (output member) is fixed to the tip of an output shaft protruding from the gear case of the reduction gear, There is known a cable in which a toothed cable is used as a drive cable and each drive cable is engaged with a drive gear from opposite directions. In this case, the gear case is integrally provided with a pair of cable guides that oppose the drive gear with the drive cable interposed therebetween, and each drive cable is sandwiched between the corresponding cable guide and the drive gear and engaged with the drive gear. The match is held. In addition, the gear case is usually formed of resin, and the cable guide formed integrally with the gear case is also made of resin. Therefore, in order to prevent the cable guide from being worn by sliding contact with the drive cable, each cable A metal guide plate is attached to each guide.

  By the way, in such a sunroof motor, the output shaft is fixed to the speed reduction mechanism and the drive gear in the gear case, and is thereby positioned in the axial direction. It has the structure which has. Therefore, when the motor is operated, the drive gear moves in the axial direction together with the output shaft, and there is a possibility that an abnormal noise such as a collision sound with the gear case may be generated.

Therefore, in the conventional electric motor, an elastic body such as a wave washer or a leaf spring is attached to the output shaft, and the elastic gear urges the drive gear in the axial direction together with the output shaft so as to absorb the play. Yes.
Japanese Patent No. 3131199

  However, in the structure that attaches an elastic body to the output shaft and absorbs the play, the number of parts increases by the amount of the elastic body, and the assembly work is also required, which increases the cost of the electric motor. There was a point.

  An object of the present invention is to reduce the cost of an electric motor by reducing the number of parts and assembly work.

An electric motor of the present invention is an electric motor that operates a driven body by driving a pair of drive cables coupled to a driven body in an axial direction, the yoke having a bottomed cylindrical shape, A gear case fixed to the opening end of the yoke, an armature shaft protruding into the gear case, an armature rotatably supported by the yoke, and housed in the gear case, decelerating the rotation of the armature shaft and outputting A reduction mechanism that outputs from a shaft; an output member that is fixed to the output shaft and disposed on an outer surface of the gear case; and that engages with a pair of the drive cables; and is provided in the gear case so as to face the output member. A pair of cable guides that hold the engagement of the corresponding drive cables with the output member, and the corresponding cable guides. A pair of sliding contact portion in sliding contact with the drive cable is a state in which the cable guide is inserted into the mounting hole pair of the sliding contact portion of superimposed parallel to the guide surfaces of the corresponding said cable guides respectively corresponding A guide plate in which a pair of claw portions and a connecting portion for connecting the pair of sliding contact portions are integrated by a steel plate, and the connecting portion is formed to be elastically deformable in the axial direction of the output shaft. Further, it is arranged between the gear case and the output member and biases the output member in the axial direction.

  The electric motor of the present invention is characterized in that the guide plate includes a pair of the connecting portions arranged with the output shaft interposed therebetween.

  According to the present invention, the pair of sliding contact portions that are respectively attached to the corresponding cable guides and are in sliding contact with the drive cable are connected to each other by the connecting portions, and the connecting portions are formed to be elastically deformable in the axial direction of the output shaft. In addition, since it is arranged between the gear case and the output member, and the output member is urged in the axial direction by the connecting portion, a component such as an elastic body for urging the output member in the axial direction is separately provided. Can be made unnecessary. Therefore, the number of parts and assembly work of this electric motor can be reduced, and the cost can be reduced.

  Further, according to the present invention, since the pair of connecting portions arranged on the guide plate with the output shaft interposed therebetween is provided, the output member can be biased evenly around the output shaft. Can be reliably urged to reliably prevent abnormal noise of the electric motor caused by the backlash of the output shaft in the axial direction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing an outline of a sunroof device provided on a roof of a vehicle. The sunroof device 11 includes a roof panel 12 as a driven body. The formed opening 14 is opened and closed. A pair of shoes 15a and 15b are fixed to both sides of the roof panel 12, while guide rails 16 extending in the vehicle front-rear direction are fixed to both sides of the opening 14 of the roof 13a. , 15b are guided by the corresponding guide rails 16, so that the roof panel 12 can be moved in the vehicle front-rear direction, that is, can be opened and closed.

  One end of geared drive cables 17a, 17b is connected to each shoe 15b on the vehicle rear side, and the other ends of these drive cables 17a, 17b are respectively routed to the vehicle front side of the opening 14. Yes. A sunroof motor 21 as an electric motor is disposed on the front side of the vehicle with respect to the opening 14 and inside the roof 13a between the windshield 13b, and the gear portions of the drive cables 17a and 17b are arranged in this manner. The sunroof motor 21 is engaged with and engaged with a drive gear 22 as an output member. When the sunroof motor 21 is operated, the drive cables 17a and 17b are driven in the axial direction in opposite directions by the sunroof motor 21, whereby the roof panel 12 is driven by the drive cables 17a and 17b connected via the shoes 15b. It is pushed and pulled to automatically activate, that is, open and close.

  2A and 2B are perspective views showing details of the sunroof motor shown in FIG. 1, FIG. 3 is an exploded perspective view of the sunroof motor shown in FIG. 2, and FIG. 4 is a fixed portion between the yoke and the gear case. FIG.

  As shown in FIGS. 2A and 2B, the sunroof motor 21 includes a motor body 23 that is a motor with a brush. The yoke 24 of the motor body 23 includes a pair of arc portions 24a that are curved around an axis, a pair of parallel flat plate portions 24b that connect the arc portions 24a, and a bottom portion 24c that closes one end in the axial direction. As shown in FIG. 3, an armature 25 is accommodated inside the yoke 24. The armature 25 includes an armature shaft 26, and one end of the armature shaft 26 is supported by a bearing (not shown) provided on the bottom 24 c of the yoke 24, so that the armature 25 is rotatable inside the yoke 24. ing. An amateur core 27 is fixed to the amateur shaft 26, and a plurality of amateur coils 28 are wound around the amateur core 27. Further, a commutator 29 is fixed to the armature shaft 26 adjacent to the armature core 27, and the coil ends of each armature coil 28 are connected to the commutator 29, respectively.

  A brush device 31 is attached to the open end of the yoke 24 to supply power to the armature 25, that is, the armature coil 28. As shown in FIG. 4, the brush device 31 has a structure in which a pair of brushes 33 a and 33 b are mounted on a brush holder 32. The brushes 33 a and 33 b are in sliding contact with the outer peripheral surface of the commutator 29, and the brush The drive current commutated at a predetermined timing via the 33a, 33b and the commutator 29 is supplied to the amateur coil 28.

  A gear case 36 is fixed to the open end of the yoke 24 by a pair of bolts 34 and nuts 35. The gear case 36 is formed in a bathtub shape from a resin material, and the armature shaft 26 of the motor body 23 protrudes from the yoke 24 to the inside of the gear case 36 and is accommodated in the gear case 36. The distal end portion and the intermediate portion of the armature shaft 26 are supported by a bearing (not shown) provided inside the gear case 36. A cover body 37 is attached to the gear case 36 by five claw engagements, and the open end of the gear case 36 is closed by the cover body 37.

  FIG. 5 is a sectional view taken along line AA in FIG. 2B. As shown in FIG. 5, a worm gear mechanism 41 as a speed reduction mechanism is accommodated in the gear case 36 closed by the cover body 37. ing. The worm gear mechanism 41 includes a worm 41a and a worm wheel 41b. The worm 41a is integrally formed on an outer peripheral surface of a portion of the armature shaft 26 protruding into the gear case 36, and the worm wheel 41b is fixed to the output shaft 42. The output shaft 42 is rotatably accommodated in a cylindrical gear accommodating portion 36a provided inside the gear case 36. The worm 41a and the worm wheel 41b are meshed with each other, whereby the rotation of the armature shaft 26 is decelerated to a predetermined rotational speed via the worm gear mechanism 41 and output from the output shaft 42.

  In the illustrated case, the worm 41a is integrally formed on the outer peripheral surface of the armature shaft 26. However, the present invention is not limited thereto, and the armature shaft 26 is connected to a shaft provided with the worm 41a. Other structures may be used as long as the worm 41a is rotationally driven by the armature shaft 26. Further, the speed reduction mechanism is not limited to the worm gear mechanism 41, and a mechanism having another structure may be used.

  A gear cover 43 is attached to the open end of the gear housing portion 36 a, and the gear housing portion 36 a is isolated within the gear case 36 by the gear cover 43. Thereby, lubricating oil such as grease applied to the worm gear mechanism 41 is prevented from leaking to a portion other than the gear housing portion 36a of the gear case 36.

  The sunroof motor 21 is provided with a control board 51 for controlling the operation of the motor body 23. The control board 51 has a structure in which a control circuit 51b for controlling the drive current supplied to the amateur 25 (the amateur coil 28) is provided on the board 51a, and serves as a fixing means provided integrally with the cover body 37. It is fixed to the inner surface of the cover body 37 by three clips 52. The clip 52 is a known fixing means including a cylindrical main body 52a, a clip sphere 52b provided on the upper portion thereof, and a cross slit 52c extending from the clip sphere 52b to the main body 52a. Then, by attaching the cover body 37 to the gear case 36, the control board 51 is accommodated in a control board accommodation portion 36 b that is integrally provided inside the gear case 36.

  As shown in FIGS. 3 and 4, the brush device 31 is provided with a pair of power terminals 53 and 54, and the control board 51 is provided with a pair of connection pieces 55 and 56, and the control board 51 is fixed. When the cover body 37 is attached to the gear case 36, the connection pieces 55 and 56 are connected to the corresponding power terminals 53 and 54, and the control board 51 (control circuit 51b) and the brushes 33a and 33b are electrically connected. It has come to be.

  The gear case 36 is provided with a ground terminal (ground terminal) 57 whose one end is electrically connected to the yoke 24 via the bolt 34 and the nut 35, and the control board 51 is provided with a ground connection piece 58. When the cover body 37 to which the control board 51 is fixed is attached to the gear case 36, the connecting piece 58 is connected to the ground terminal 57, and the control circuit 51b is grounded (grounded) to the yoke 24. ing.

  A connector 59 for external connection is provided at one end of the control board 51. As shown in FIG. 2, the connector 59 protrudes from the gear case 36, and the control circuit 51b is connected to a power source (not shown) such as a battery mounted on the vehicle 13 via the connector 59 or a sunroof switch (not shown) provided in the vehicle interior. (Not shown). When the sunroof switch is operated, a drive current is supplied from the power source to the control circuit 51b via the connector 59, and this drive current is controlled to a predetermined current by the control circuit 51b. The power is supplied to the armature 25 (the amateur coil 28) through the power terminals 53 and 54, the brushes 33a and 33b, and the commutator 29.

  Reference numeral 61 denotes a positioning portion provided in the cover body 37. The positioning portion 61 is inserted into a positioning hole 62 formed in the control board 51 in a light press-fit manner, and a positioning protrusion 63 provided in the gear case 36. By engaging with the control board 51, the control board 51 can be positioned at a predetermined position of the control board housing portion 36 b of the gear case 36.

  In order to detect the rotation of the amateur shaft 26, the sunroof motor 21 is provided with a rotation sensor. The rotation sensor includes a sensor magnet 72 fixed to the armature shaft 26. The sensor magnet 72 is a multipolar magnetized magnet in which a plurality of magnetic poles are magnetized in the circumferential direction. It is designed to rotate with it.

  On the other hand, as shown in FIG. 3, a pair of Hall ICs 73 a and 73 b are arranged on the control board 51 so as to face the sensor magnet 72 so as to form an angle of 90 degrees with respect to the axis of the armature shaft 26. The magnetic field output from the sensor magnet 72 is detected with a 90 degree phase difference. Each Hall IC 73a, 73b detects a change in the magnetic field generated by the sensor magnet 72 and outputs it as a pulse signal having a period inversely proportional to the rotational speed of the armature shaft 26. Detection signals, that is, pulse signals of the Hall ICs 73a and 73b are input to the control circuit 51b, and the control circuit 51b receives the period of the pulse signals input from the Hall ICs 73a and 73b and the pulse signals input from the Hall ICs 73a and 73b. Control of the drive current supplied to the amateur coil 28 is executed based on the appearance timing and the like.

  As shown in FIG. 5, the output shaft 42 is disposed so that its axial direction is perpendicular to the axial direction of the armature shaft 26 and also perpendicular to the flat plate portion 24 b of the yoke 24. The tip protrudes from the bottom surface 36c of the gear case 36 to the outside of the case 36 (upward in the figure). The drive gear 22 is disposed on the bottom surface 36c of the gear case 36, that is, on the outer surface. The drive gear 22 is fixed to the tip of the output shaft 42 protruding from the bottom surface 36c of the gear case 36, and rotates together with the output shaft 42. It is supposed to be.

  As shown in FIG. 5, a tool hole 42a that can be engaged with a tool such as a hexagon wrench is formed at the other end of the output shaft 42 (downward in the figure). The tool can be engaged with the tool hole 42a through the through hole 37a formed in the cover body 37, the output shaft 42 can be rotated by the tool, and the roof panel 12 can be manually opened and closed. It is like that.

  As shown in FIGS. 2B and 5, a pair of cables is attached to the bottom surface 36 c of the gear case 36 in order to maintain the engagement of the drive cables 17 a and 17 b with the drive gear 22, that is, the engagement with the drive gear 22. Guides 81 and 82 are provided in a protruding manner.

  FIG. 6 is a plan view showing the structure of the meshing portion between the drive gear and the drive cable. These cable guides 81 and 82 are each formed in a block shape protruding from the bottom surface 36c of the gear case 36. It is made of integrally formed resin.

  One cable guide 81 includes a guide surface 81 a formed in a planar shape parallel to the output shaft 42. The guide surface 81 a faces the drive gear 22 with a predetermined interval, and one drive cable 17 a is disposed between the guide surface 81 a and the drive gear 22. Thereby, the movement of the drive cable 17a in the direction away from the drive gear 22 in the radial direction is restricted by the guide surface 81a, and the meshing with the drive gear 22 is maintained. Similarly, the other cable guide 82 includes a guide surface 82a formed in a planar shape parallel to the guide surface 81a. The guide surface 82a faces the drive gear 22 at a predetermined interval on the side opposite to the guide surface 81a, and the other drive cable 17b is disposed between the guide surface 82a and the drive gear 22. . Thereby, the movement of the drive cable 17b in the direction away from the drive gear 22 in the radial direction is restricted by the guide surface 82a, and the meshing with the drive gear 22 is maintained.

  In order to prevent the resin guide surfaces 81a and 82a from being worn by sliding contact with the drive cables 17a and 17b, a metal guide plate 83 is mounted on the bottom surface 36c of the gear case 36.

  FIG. 7 is a perspective view showing details of the guide plate shown in FIG. 6, and this guide plate 83 includes a pair of guide wall portions 84a and 84b as sliding contact portions mounted on the corresponding cable guides 81 and 82, respectively. And a pair of connecting bridge portions 85a and 85b as connecting portions for connecting the guide wall portions 84a and 84b to each other, and these are integrally formed of a steel plate.

  One guide wall portion 84a is formed in a flat plate shape parallel to the guide surface 81a of the cable guide 81, and a pair of claw portions 86a formed integrally therewith are provided on the top surface portion of the cable guide 81. By being inserted into the hole 81b, the cable guide 81 is attached in a state of being overlapped in parallel with the guide surface 81a. Similarly, the other guide wall portion 84 b is formed in a flat plate shape parallel to the guide surface 82 a of the cable guide 82, and a pair of claw portions 86 b formed integrally therewith are provided on the top surface portion of the cable guide 82. By being inserted into the mounting hole 82b, the cable guide 82 is mounted in a state of being overlapped with the guide surface 82a. When the guide wall portions 84a and 84b are attached to the corresponding cable guides 81 and 82, the drive cables 17a and 17b are brought into sliding contact with the corresponding guide wall portions 84a and 84b of the guide plate 83 and meshed with the drive gear 22. Is retained. As a result, the drive cables 17a and 17b are not directly brought into sliding contact with the guide surfaces 81a and 82a of the cable guides 81 and 82, and wear of the guide surfaces 81a and 82a due to sliding contact with the drive cables 17a and 17b is prevented. can do.

  In addition, inclined walls 87a and 87b that are inclined in a direction away from the drive cables 17a and 17b with respect to the guide walls 84a and 84b are integrally provided on both sides of each of the guide walls 84a and 84b. The drive cables 17a and 17b are smoothly guided to the guide wall portions 84a and 84b by the walls 87a and 87b.

  On the other hand, the pair of connecting bridge portions 85a and 85b are formed in a long plate shape extending in a direction orthogonal to the drive cables 17a and 17b, respectively, and lower ends (end portions on the gear case 36 side) of the guide wall portions 84a and 84b, respectively. ) At both ends in the width direction (longitudinal direction of the drive cables 17a and 17b) and connected to the guide wall portions 84a and 84b, and when the guide plate 83 is mounted on the gear case 36, the output shaft 42 is sandwiched between them. Thus, they are arranged side by side on both sides of the output shaft 42. Further, as shown in FIG. 6, the connecting bridge portions 85 a and 85 b are bent into a dogleg shape in a plan view from the axial direction of the output shaft 42 so that the connecting bridge portions 85 a and 85 b approach each other in the middle portion in the longitudinal direction. The middle portion in the longitudinal direction is formed between the bottom surface 36c of the gear case 36 and the bottom surface of the drive gear 22 (the surface facing the bottom surface 36c of the gear case 36).

  In the sunroof motor 21, as shown in FIG. 5, the output shaft 42 has a worm wheel 41 b and a drive gear 22 fixed to the output shaft 42 arranged on the inner and outer surfaces of the gear case 36, and rotates with respect to the gear case 36. It has a free configuration. Therefore, the output shaft 42 has a structure having a slight movement allowance in the axial direction, that is, a backlash. When the motor is operated, the drive gear 22 and the worm wheel 41b move in the axial direction together with the output shaft 42 and collide with the gear case 36. There is a risk of noise. Therefore, in the sunroof motor 21, the connecting bridge portions 85a and 85b provided on the guide plate 83 are formed to be elastically deformable in the axial direction of the output shaft 42, that is, the connecting bridge portions 85a and 85b have a spring function, The driving force 22 is biased axially outward with respect to the gear case 36 by the elastic force so as to absorb the backlash in the axial direction of the output shaft 42.

  FIG. 8 is an explanatory view showing the drive gear urging structure by the connecting bridge portion shown in FIG. 7, and each connecting bridge portion 85a, 85b has an intermediate portion between the guide wall portions 84a, 84b at the bottom surface 36c of the gear case 36. On the other hand, it is curved so as to protrude in the axial direction toward the drive gear 22, and is elastically deformable in the direction of increasing or decreasing the degree of curvature, that is, in the axial direction of the output shaft 42. Each of the connecting bridge portions 85a and 85b is in contact with a support surface 88 formed at the both ends in the longitudinal direction at the bottom surface 36c of the gear case 36 in parallel with the bottom surface 36c and lower than the bottom surface 36c. It is disposed between the support surface 88 of the gear case 36 and the drive gear 22 in a state in which the middle portion in the longitudinal direction is elastically deformed in a direction in which the intermediate portion in the longitudinal direction approaches the support surface 88 side, that is, a direction in which the degree of curvature is reduced. As a result, the drive gear 22 is urged in the axial direction of the output shaft 42 and away from the support surface 88 (bottom surface 36c) of the gear case 36 by the elastic force of the connecting bridge portions 85a and 85b. 41b comes into contact with the inner surface of the gear case 36, and the axial backlash is absorbed.

  As described above, in the sunroof motor 21, the connecting bridge portions 85a and 85b that connect the pair of guide wall portions 84a and 84b to each other are formed to be elastically deformable in the axial direction of the output shaft 42, and the connecting bridge portions 85a and 85b. Is arranged between the gear case 36 and the drive gear 22 so that the drive gear 22 is urged in the axial direction by the connecting bridge portions 85a and 85b, so that the output shaft 42 has a play in the axial direction. Even if it exists, the backlash of the output shaft 42 can be absorbed by urging the drive gear 22 in the axial direction. As a result, the collision noise generated when the drive gear 22 and the worm wheel 41b move in the axial direction together with the output shaft 42 and collide with the gear case 36 is prevented, and the generation of noise during the operation of the sunroof motor 21 is prevented. can do.

  In the sunroof motor 21, a connecting bridge that connects the pair of guide wall portions 84 a and 84 b without providing a part such as an elastic body for urging the output shaft 42 in the axial direction separately from the guide plate 83. Since the drive gear 22 can be urged in the axial direction by the portions 85a and 85b, the number of parts of the sunroof motor 21 can be reduced and the cost thereof can be reduced. Further, since the drive gear 22 is biased in the axial direction by attaching the guide plate 83 to the gear case 36, a part such as an elastic body for biasing the output shaft 42 in the axial direction is guided. There is no need to assemble separately from the plate 83, and the assembling work of the sunroof motor 21 can be reduced, and the cost can be reduced.

  Further, in the sunroof motor 21, since the pair of connecting bridge portions 85a and 85b arranged on the guide plate 83 with the output shaft 42 interposed therebetween is provided, the drive gear 22 is urged equally around the output shaft 42. Can do. As a result, the drive gear 22 can be reliably urged, and the noise of the sunroof motor 21 caused by the output shaft 42 having backlash in the axial direction can be reliably prevented.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the present invention is applied to the sunroof motor 21 used in the sunroof device 11 of the vehicle 13. However, the present invention is not limited to this, and the driven body is connected via a pair of drive cables 17a and 17b. As long as the electric motor is operated, the present invention may be applied to an electric motor that drives another driven body.

  Moreover, in the said embodiment, although a pair of connection bridge | bridging part 85a, 85b is provided in the guide plate 83, not only this but the number does not ask | require.

It is explanatory drawing which shows the outline of the sunroof apparatus provided in the roof of the vehicle. (A), (b) is a perspective view which shows the detail of the sunroof motor shown in FIG. 1, respectively. FIG. 3 is an exploded perspective view of the sunroof motor shown in FIG. 2. It is a top view which shows the fixed part of a yoke and a gear case. It is sectional drawing which follows the AA line in FIG.2 (b). It is a top view which shows the structure of the meshing part of a drive gear and a drive cable. It is a perspective view which shows the detail of the guide plate shown in FIG. It is explanatory drawing which shows the urging | biasing structure of the drive gear by the connection leg part shown in FIG.

Explanation of symbols

11 Sunroof device 12 Roof panel (driven body)
13 Vehicle 13a Roof 13b Windshield 14 Openings 15a, 15b Shoes 16 Guide rails 17a, 17b Drive cable 21 Sunroof motor (electric motor)
22 Drive gear (output member)
23 Motor body 24 Yoke 24a Arc portion 24b Flat plate portion 24c Bottom portion 25 Amateur 26 Amateur shaft 27 Amateur core 28 Amateur coil 29 Commutator 31 Brush device 32 Brush holder 33a, 33b Brush 34 Bolt 35 Nut 36 Gear case 36a Gear housing portion 36b Control board housing Part 36c bottom surface 37 cover body 37a through hole 41 worm gear mechanism (deceleration mechanism)
41a Worm 41b Worm wheel 42 Output shaft 42a Tool hole 43 Gear cover 51 Control board 51a Board 51b Control circuit 52 Clip 52a Main body 52b Clip ball 52c Slit 53, 54 Power supply terminal 55, 56 Connection piece 57 Ground terminal 58 Connection piece 59 Connector 61 Positioning Part 62 Positioning hole 63 Positioning protrusion 72 Sensor magnet 73a, 73b Hall IC
81, 82 Cable guides 81a, 82a Guide surfaces 81b, 82b Mounting holes 83 Guide plates 84a, 84b Guide wall portions (sliding contact portions)
85a, 85b Connecting bridge part (connecting part)
86a, 86b Claw portions 87a, 87b Inclined wall 88 Support surface

Claims (2)

An electric motor for operating the driven body by driving a pair of drive cables connected to the driven body in an axial direction,
A yoke formed into a bottomed cylindrical shape;
A gear case fixed to the open end of the yoke;
An amateur shaft that projects into the gear case and is rotatably supported by the yoke;
A speed reduction mechanism that is housed in the gear case and decelerates rotation of the armature shaft and outputs from the output shaft;
An output member that is fixed to the output shaft and disposed on an outer surface of the gear case, and engages a pair of the drive cables;
A pair of cable guides that are respectively provided in the gear case so as to face the output member and hold the engagement of the corresponding drive cables with the output member;
A pair of sliding contact portions that are mounted on the corresponding cable guides and are in sliding contact with the drive cable, and a guide surface of the cable guide that is inserted into the corresponding mounting hole of the cable guide and that corresponds to the pair of sliding contact portions. A pair of claw portions that are overlapped in parallel with each other , and a guide plate that integrates a connecting portion that connects the pair of sliding contact portions with a steel plate,
The electric motor is characterized in that the connecting portion is formed to be elastically deformable in the axial direction of the output shaft, and is arranged between the gear case and the output member to urge the output member in the axial direction. The electric motor according to claim 1, wherein the guide plate includes a pair of the connecting portions arranged with the output shaft interposed therebetween.

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