JP2006180634A - Electric motor unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance assembling workability of an electric motor unit with a reduction gear mechanism. <P>SOLUTION: In the electric motor unit 1 comprising a motor section 2 and a reduction gear mechanism section 3 where rotation output of the motor section 2 is passed through the reduction gear mechanism section 3 before being outputted from an output shaft 4, a gear housing 6 is provided with a bottomed tubular case 10 opening on one end side. Interior of the case 10 serves as a gear chamber 6a, and a contact unit 44 provided with contact plates 43a and 43b is fixed to the bottom face 45 of the gear chamber 6a. A clutch assembly 54 is arranged in the gear chamber 6a contiguously to the contact unit 44. Since the contact unit 44 and the clutch assembly 54 are attached from the same direction of the gear housing 6, reversal of the gear housing 6 is not required in the assembling process and assembling performance is enhanced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric motor unit mounted on a vehicle such as an automobile, a bus, or a truck, and more particularly to an electric motor unit with a speed reduction mechanism used for a power slide door, a wiper device, or the like of an automobile.

  An electric motor that is operated by a power source such as a battery mounted on a vehicle is used as a drive source for a power slide door or a wiper device of an automobile. As such an electric motor, one having a speed reduction mechanism for reducing the rotation speed of the output shaft to a required rotation speed is known. Generally, a single unit is formed as an electric motor with a speed reduction mechanism. Yes. For example, in a power slide door, the slide door slides between a fully closed position and a fully open position by a forward / reverse operation of the motor. In the rear wiper device, a motor unit is arranged inside the rear window, and the wiper arm performs a wiping operation between the upside down positions by the forward / reverse operation of the motor.

  On the other hand, in a motor unit for a rear wiper device, an auto-stop relay plate is mounted on the reduction gear so that when the operator stops the wiping operation, the wiper device moves to a predetermined position and then stops. It has been. The relay plate is formed with a conductive portion at a predetermined angle along the circumferential direction, and a contact plate made of a conductive material is in elastic contact therewith. The conductive portions of the contact plate and the relay plate form an electrical contact that is separated as the output shaft rotates, and the contact is conducted only during a predetermined rotation angle, and power is supplied to the motor with a predetermined polarity. .

  FIG. 12 is an explanatory diagram showing the configuration of the motor unit, and FIG. 13 is an explanatory diagram showing its assembly configuration. As shown in FIG. 12, the motor unit 61 includes a motor unit 62 and a speed reduction mechanism unit 63. The speed reduction mechanism 63 is provided with a gear housing 64, in which a worm wheel 65 as a reduction gear, a relay plate 66, a swing arm 67a integrally attached to the output shaft 67, and the worm wheel 65 swing. A connecting rod 77 and the like for connecting the arm 67a so as to transmit power can be accommodated. An output shaft 67 projects from the gear housing 64.

  On the other hand, a relay plate 66 is disposed on the upper end surface of the worm wheel 65 in the drawing. A contact unit mounting hole 68 is formed in the gear housing 64, and a contact unit 69 is mounted there. A contact plate 71 that contacts the relay plate 66 is attached to the contact unit 69.

  A power supply connector 72 for supplying power to the motor unit 62 is attached to the gear housing 64. The gear housing 64 is provided with a power supply connector mounting hole 73 in addition to the contact unit mounting hole 68, and the power supply connector 72 is attached thereto. A harness 74 is drawn out from the power supply connector 72 and the contact unit 69, and the harness 74 is connected to the connector 75. The connector 75 is connected to a terminal on the vehicle body side connected to a power source or a control device.

A bracket 76 is attached to the lower surface side of the gear housing 64 in the figure, and the motor unit 61 is fixed to the vehicle body by the bracket 76. As shown in FIG. 13, a contact plate 71 is attached to the gear housing 64 from the upper surface side, while a worm wheel 65, a swing arm 67a, a connecting rod 77, and a bracket 76 are attached from the lower surface side.
Japanese Patent Laid-Open No. 8-163811 Japanese Utility Model Publication No.6-24373

  However, as shown in FIG. 13, in the conventional motor unit 61, it is necessary to assemble the contact plate 71, the power feeding connector 72, the worm wheel 65, and the bracket 76 from both sides of the gear housing 64. That is, the electric parts such as the contact plate 71 and the gear parts such as the worm wheel 65 are assembled in different directions. Therefore, in the assembling process, it is necessary to reverse the gear housing 64 after fixing the mounting bracket 76 to the worm wheel 65 and attach the contact plate 71 and the power feeding connector 72 thereon. For this reason, there has been a problem that the assembling work becomes complicated, the number of assembling steps increases, and the cost increases.

  An object of the present invention is to improve assembly workability of an electric motor unit with a speed reduction mechanism.

  The electric motor unit of the present invention is an electric motor unit having a motor having a rotation shaft, a speed reduction mechanism that reduces the rotation of the rotation shaft and transmits the rotation to the output shaft, and a housing that houses the speed reduction mechanism, A bottomed cylindrical case portion formed in the housing and having an open end, a contact member attached to the bottom surface of the inner chamber portion formed in the case portion, and the inner chamber portion adjacent to the contact member. And an electric member to which power is supplied by the contact member.

  In the present invention, the contact member is attached to the bottom surface of the inner chamber portion of the case portion, and the electric member to which power is supplied by the contact member is disposed adjacent to the contact member in the inner chamber portion. The contact member and the electric member can be assembled to the housing from one direction. That is, it is not necessary to reverse the housing in the assembling process, and the electric system part and the gear system part can be assembled from the same direction.

  In the electric motor unit, the electric member may be attached to the case portion in a state where the contact member is attached to the bottom surface of the inner chamber portion. Further, the contact member extends from the bottom surface of the inner chamber portion toward the opening side, and is brought into contact with a contact provided on an end surface facing the bottom surface of the inner chamber portion of the assembly including the electric member. Also good. Furthermore, an electromagnetic clutch may be used as the electric member, and the contact member may be brought into contact with a slip ring provided in an assembly including the electromagnetic clutch.

  According to the electric motor unit of the present invention, the electric motor unit includes a motor having a rotation shaft, a speed reduction mechanism that reduces the rotation of the rotation shaft and transmits the rotation shaft to the output shaft, and a housing that houses the speed reduction mechanism. A contact member is attached to the bottom surface of the inner chamber portion of the bottomed cylindrical case portion formed at one end side, and an electric member to which power is supplied by the contact member adjacent to the contact member is attached to the inner chamber portion. Since it arrange | positions, it becomes possible to assemble | attach a contact member and an electrical member with respect to a housing from one direction. For this reason, electrical parts and gear parts can be assembled from the same direction without inverting the housing during the assembly process, and the assembly process of the electric motor unit is simplified and the assemblability is greatly improved. As a result, the number of assembly steps can be reduced, and the manufacturing cost can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a configuration of an electric motor unit with a speed reduction mechanism according to an embodiment of the present invention, FIG. 2 is a plan view of the electric motor unit of FIG. 1, and FIG. An electric motor unit 1 (hereinafter abbreviated as a motor unit 1) in FIG. 1 is used as a drive source for a power slide door, and is installed under a floor panel of an automobile or inside a door. The motor unit 1 includes a motor unit 2 and a speed reduction mechanism unit 3, and the rotation output of the motor unit 2 is decelerated by the speed reduction mechanism unit 3 and output from the output shaft 4. A rotary drum (not shown) is attached to the output shaft 4, and the slide door slides on the side surface of the vehicle body by a wire wound around the rotary drum.

  The motor unit 2 is provided with a bottomed cylindrical motor housing 5. The motor housing 5 is made of a magnetic material such as iron and is fixed to the gear housing 6 of the speed reduction mechanism 3. The motor housing 5 also serves as a motor yoke, and two magnets 7 are attached to the inner peripheral surface. The magnets 7 are magnetized so that the polarities on the inner surfaces facing each other are different from each other. An armature 8 is rotatably disposed inside the magnet 7. The rotating shaft 9 of the amateur 8 is rotatably supported by bearings 11a, 11b, and 11c. The bearing 11a is attached to the bottom of the motor housing 5, and the bearings 11b and 11c are attached to the gear housing 6, respectively.

  The amateur 8 has an amateur core 13 in which a plurality of slots 12 are formed. Each slot 12 is wound with a copper wire to form an amateur coil 14. A commutator 15 is disposed on the left side of the armature core 13 of the rotating shaft 9 in the figure. The commutator 15 includes a synthetic resin body portion 15a fixed to the rotary shaft 9, and a plurality of commutator pieces 15b arranged radially on the outer periphery thereof. Each commutator piece 15 b is connected to the amateur coil 14.

  A brush holder 16 is provided at the end of the gear housing 6. Two brushes 17 a and 17 b are attached to the brush holder 16. The brushes 17a and 17b are biased toward the commutator piece 15b and are pressed against the commutator piece 15b. Pigtails 18 are attached to the ends of the brushes 17a and 17b, and are connected to a motor power terminal 19 (see FIG. 2) via a conductive plate (not shown). The motor power terminal 19 is arranged facing the outside in an electrical connection hole 22 of a connector portion 21 formed in the gear housing 6.

  A rotating shaft 9 projects into the gear housing 6 of the speed reduction mechanism 3. A worm 23 is formed at the tip of the rotating shaft 9 and meshes with the worm wheel 24. The worm wheel 24 is accommodated in a gear chamber (inner chamber portion) 6 a formed in the case portion 10 of the gear housing 6. The case portion 10 has a bottomed cylindrical shape with one end opened, and the inside thereof is a gear chamber 6a. The worm wheel 24 is connected to the output shaft 4 via an electromagnetic clutch (electric member) 25. When the electromagnetic clutch 25 is OFF, the output shaft 4 and the worm wheel 24 are not connected. The electromagnetic clutch 25 is also accommodated in the gear chamber 6a, and a gear cover 26 is attached to the outside of the gear chamber 6a.

  FIG. 4 is a cross-sectional view showing the configuration of the electromagnetic clutch 25. Here, if the slide door is manually moved while the output shaft 4 is connected to the worm wheel 24, the door becomes heavy due to the load on the motor unit 2 side, and the slide door is difficult to move manually. On the other hand, if the electromagnetic clutch 25 is interposed between the output shaft 4 and the worm wheel 24 and turned off at the time of manual operation, the output shaft 4 rotates freely without being connected to the worm wheel 24. Thereby, even in the case of manual operation, the motor unit 2 does not become a load, and the slide door can be moved lightly by hand.

  The electromagnetic clutch 25 includes a field rotor 27 in which the worm wheel 24 is fixed to the outer peripheral portion, and an amateur 28 fixed to the output shaft 4. The field rotor 27 has a bottomed cylindrical shape with a cylindrical boss 29 projecting from the center, and is rotatably attached to the output shaft 4 by a bearing 31. A coil 32 is accommodated in the field rotor 27, and the field rotor 27 is also used as a yoke. A flange 33 is formed on the outer periphery of the left end portion of the field rotor 27 in the drawing, and clutch teeth 34 are formed on the left end surface thereof.

  The amateur hub 35 is fixed to the output shaft 4, and the amateur 28 is engaged with the amateur hub 35 by serrations so as to be movable in the axial direction and integrally rotatable in the rotational direction. Clutch teeth 36 are formed on the outer periphery of the right end surface of the amateur 28 so as to face the clutch teeth 34. The clutch teeth 34 and 36 are formed so as to be able to engage with each other. A leaf spring 30 is attached to the amateur 28 and urges the amateur 28 in a direction (left direction in the figure) to pull it away from the field rotor 27. In the normal state (the coil 32 is not energized), the amateur 28 is held by the leaf spring 30 with the clutch teeth 34 and 36 disengaged as shown in FIG.

  Therefore, when the coil 32 is energized, the armature 28 is attracted toward the field rotor 27 against the urging force of the leaf spring 30, and the clutch teeth 34 and 36 are engaged. Thereby, the rotation of the worm wheel 24 is transmitted to the output shaft 4 via the field rotor 27 and the amateur 28. On the other hand, when the energization to the coil 32 is cut off, the armature 28 is pulled back by the urging force of the leaf spring 30, and the engagement of the clutch teeth 34 and 36 is released as shown in FIG. Connection with 24 is cut off.

  On the other hand, for such a clutch operation, a slip ring 37 which is a contact point for coil feeding is provided on the field rotor 27. FIG. 5 is an explanatory view showing the attachment configuration of the slip ring 37. In FIG. 5, the slip ring 37 is indicated by hatching in order to improve visibility. The slip ring 37 is formed in a ring shape by a conductive member, and two slip rings (37a, 37b) are provided one by one inside and outside. The slip rings 37a and 37b are press-fitted and fixed on the worm wheel 24 while being insulated from each other. A male terminal 38 projects from the slip rings 37a and 37b, and is connected to a pair of female terminals 39 to which the respective ends of the copper wire of the coil 32 are welded. The female terminal 39 is fixed to the coil bobbin 41 of the coil 32, and the male terminal 38 passes through the worm wheel 24 and is coupled to the female terminal 39.

  The slip rings 37a and 37b are in contact with contact plates (contact members) 43a and 43b disposed on the bottom surface 45 of the gear chamber 6a, and the coil 32 is supplied with power from the contact plates 43a and 43b. ing. The contact plates 43 a and 43 b are attached to the contact unit 44, and the contact unit 44 is fixed to the gear chamber bottom surface 45. 6 is a perspective view showing the attachment state of the contact unit 44, FIG. 7 is a perspective view showing the configuration of the contact unit 44, (a) is a view from below, and (b) is a view from the top. Show. As shown in FIGS. 6 and 7, the contact unit 44 has a configuration in which contact plates 43 a and 43 b and clutch power terminals 46 (46 a and 46 b) are arranged on the unit main body 42. The clutch power terminals 46a, 46b are electrically connected to the contact plates 43a, 43b. Here, the contact plates 43a, 43b are caulked by the caulking portions 47 to the clutch power terminals 46a, 46b.

  The clutch power terminals 46a and 46b are fixed to the unit body 42. The contact plates 43a and 43b are formed in a cantilevered plate spring shape whose base is fixed by a caulking portion 47, and the tip of the contact plate 43a and 43b extends upward (opening side of the gear chamber 6a). Standing up from 42. Contact portions 48 that come into contact with the slip rings 37a and 37b are provided at the tips of the contact plates 43a and 43b. When the electromagnetic clutch 25 is assembled in the gear chamber 6a, the contact portion 48 comes into contact with the slip ring 37, and the contact plates 43a and 43b are bent, so that the contact portion 48 is elastically pressed against the slip ring 37.

  The contact unit 44 is fixed to the gear chamber bottom surface 45 such that one end thereof is inserted into a communication hole 49 formed in the gear chamber 6a. A guide portion 51 protrudes from the gear chamber bottom surface 45, and an introduction guide 52 is cut out at a corner portion of the guide portion 51 in a C chamfer shape or an R curved shape. As indicated by arrows in FIG. 6, the contact unit 44 is turned into the communication hole 49 from the circumferential direction, and then fixed to the gear chamber bottom surface 45 by the screw 53. At this time, the contact unit 44 is turned inside the guide portion 51 along the introduction guide 52 from the circumferential direction, and then the tip side is inserted into the communication hole 49. That is, the guide 51 and the introduction guide 52 can smoothly perform the insertion work, improve workability and reduce man-hours.

  The fixing means of the contact unit 44 is not limited to a screw, and the contact unit 44 may be held by providing a protrusion for preventing the contact from being provided on the gear chamber bottom surface 45. For example, three protrusions may be arranged on the upper and lower sides and the right side around the site where the screw 53 is present, and the right end portion of the unit main body 42 in the drawing may be fitted therein. At this time, the lower and right protrusions may be formed in a triangular cross-section, and the contact unit 44 may be attached so as to ride on the slope. In this case, since the electromagnetic clutch 25 is disposed in the extending direction of the output shaft 4 and the contact plates 43a and 43b are elastically pressed against the slip ring 37, the movement of the contact unit 44 in the axial direction is restricted. Is done.

  On the other hand, the communication hole 49 communicates with the electrical connection hole 22 formed in the gear housing 6. When the contact unit 44 is inserted into the communication hole 49 and fixed to the gear chamber bottom surface 45, the clutch power supply terminal 46 extends in the tangential direction of the worm wheel 24 and protrudes into the electric system connection hole 22 of the connector portion 21 (see FIG. 2). Thus, both the motor power terminal 19 and the clutch power terminal 46 are accommodated in the electrical connection hole 22 and arranged side by side. At this time, both the power supply terminals 19 and 46 extend into the electric system connection hole 22 from opposite directions. That is, the motor power supply terminal 19 extends from the motor unit 2 side along the rotary shaft 9 in parallel with the rotary shaft 9 into the electrical connection hole 22, and the clutch power supply terminal 46 extends from the speed reduction mechanism unit 3 side to the rotary shaft 9. Along the rotation shaft 9 and extending into the electrical connection hole 22.

  In the electrical connection hole 22, both power supply terminals 19, 46 are arranged facing the outside of the gear housing 6, and can be electrically connected from the outside. That is, the electrical connection portions are concentrated in the connector portion 21, and if the terminals, couplers, etc. on the board are connected thereto, the electrical connection work is completed. As described above, in the motor unit 1, the external electric wiring is only required at one place of the connector portion 21, and complicated work such as handling of the harness is not necessary for electrical connection. Therefore, the workability of the electrical connection work at each of the power terminals 19 and 46 is greatly improved, the assemblability is improved, and the number of work steps can be reduced.

  In the motor unit 1, two electrical connection holes are provided in the conventional motor unit, whereas the electrical connection hole formed in the gear housing 6 is one electrical connection hole 22. Therefore, when the motor is waterproof, it is sufficient that only the electrical connection hole 22 has a waterproof structure, and the number of holes to which the waterproof structure is applied can be reduced to a minimum. Therefore, in the motor unit 1 that requires a waterproof specification, the number of parts and the number of assembling steps related to the waterproof structure can be reduced, and the product cost can be reduced.

  The motor power terminal 19 and the clutch power terminal 46 in the electrical connection hole 22 are connected to terminals on a control board (not shown) separately installed on the motor unit 1. Here, conventionally, the terminals on the control board are formed in a substantially C shape, and the power supply terminals 19 and 46 on the flat plate are sandwiched and connected to the C-shaped opening. However, in the case of such a contact configuration, since both terminals are substantially point contacts, the contact area is small and the contact resistance is increased. Further, when connecting the terminals on the control board to the respective power supply terminals 19 and 46, unless the positions of the terminals are sufficiently confirmed and connected, the terminals on the board are tilted, and between the power supply terminals 19 and 46, respectively. There is a risk of poor contact or pseudo contact.

  On the other hand, in the motor unit 1, when connecting the power terminals 19 and 46, an intermediate terminal provided with a contact portion that is in surface contact with each terminal is provided between the power terminals 19 and 46 and the terminals on the substrate. The increase in resistance is prevented. The intermediate terminal is incorporated on the control board or in the dedicated coupler, and is inserted into the electrical connection hole 22. Further, a retainer for positioning the terminal is provided on the control board or on the dedicated coupler so as to contact the inner wall of the electrical connection hole 22, and if the retainer passes through the electrical connection hole 22, each terminal is directly provided. Are connected correctly. Thereby, the positional accuracy between each power supply terminal 19 and 46 and the terminal on the board is ensured, and contact failure due to misalignment can be prevented. In the case of using a dedicated coupler, the outer shape may also serve as a retainer.

  Next, such a motor unit 1 is assembled as follows. FIG. 8 is a perspective view showing an assembly structure of the gear housing 6 portion. Here, first, the contact unit 44 is attached to the gear chamber bottom surface 45 of the gear housing 6. The contact unit 44 is fixed to the gear chamber bottom surface 45 with a screw 53 in such a manner that the end portion on the clutch power supply terminal 46 side is inserted into the communication hole 49. As described above, at this time, the workability at the time of attachment is improved by the guide portion 51 and the introduction guide 52.

  After the contact unit 44 is attached, a clutch assembly 54 that is an assembly including the electromagnetic clutch 25 is attached to the gear housing 6. That is, the clutch assembly 54 is attached from the opening of the case portion 10 into the gear chamber 6a with the contact plates 43a and 43b being attached to the gear chamber bottom surface 45. The clutch assembly 54 has a shape in which the armature 28 and the worm wheel 24 incorporating the field rotor 27 are attached to the output shaft 4. When the clutch assembly 54 is disposed in the gear chamber 6 a adjacent to the contact unit 44, The contact portions 48 of the contact plates 43a and 43b are in elastic contact with the slip rings 37a and 37b. Thus, the electromagnetic clutch 25 and the clutch power terminal 46 of the contact unit 44 are electrically connected, and power can be supplied to the electromagnetic clutch 25 from the contact plates 43a and 43b. And after accommodating the clutch assembly 54 in the gear housing 6, the gear cover 26 is attached and it crimps and fixes.

  Here, as described above, in the conventional motor unit 61, the contact plate 71, the worm wheel 65, the bracket 76, and the like must be assembled from both sides of the gear housing 64. The housing 64 needs to be inverted, which complicates the process. On the other hand, in the motor unit 1, as shown in FIG. 12, the contact unit 44 and the clutch assembly 54 can be assembled to the gear housing 6 from one direction. That is, the electric system part and the gear system part can be assembled from the same direction without reversing the gear housing 6. For this reason, the assembly process of the motor unit 61 is simplified, and the assemblability is greatly improved. Therefore, the number of assembling steps can be reduced, and the assembling work can be easily automated, thereby reducing the manufacturing cost.

It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.
For example, in the above-described embodiment, an example in which the motor unit of the present invention is used as a drive source for a power slide door has been shown. The present invention can also be applied to a drive source or a motor used for other electrical products. Moreover, although the structure which has arrange | positioned the electromagnetic clutch 25 in the gear housing 6 was shown, it is also possible to apply this invention to the apparatus using a contact plate like the motor unit of FIG.

  Furthermore, in the above-described embodiment, the configuration in which the power supply terminals 19 and 46 are integrated to unify the connection holes of the electric system is shown. There is no need to aggregate them. That is, as in the conventional motor unit 61, the power terminals 19 and 46 may be connected by individual electrical connection holes. 9-11 is explanatory drawing which shows such a modification. 9-11, the same code | symbol is attached | subjected about the same member, part, etc. as the motor unit 1, and the description is abbreviate | omitted.

  As shown in FIG. 9, in the modification, the communication hole 49 is not formed in the gear housing 6, and another electrical connection hole 55 is provided on the end surface of the gear housing 6 instead. A clutch power supply terminal 46 is disposed in the electrical connection hole 55 so as to face the outside. Also in this case, as shown in FIG. 11, the contact unit 44 and the clutch assembly 54 can be assembled to the gear housing 6 from one direction, and the assemblability can be improved.

It is sectional drawing which shows the structure of the electric motor unit with a reduction mechanism which is one Example of this invention. It is a top view of the electric motor unit of FIG. It is a front view of the electric motor unit of FIG. It is sectional drawing which shows the structure of an electromagnetic clutch. It is explanatory drawing which shows the attachment structure of a slip ring. It is a perspective view which shows the attachment state of a contact unit. It is a perspective view which shows the structure of a contact unit, (a) shows the state which looked at the contact unit from the downward direction, (b) from the upper direction. It is a perspective view which shows the assembly structure of a gear housing part. It is a perspective view which shows the attachment state of the contact unit in the electric motor unit with a speed-reduction mechanism which is one modification of this invention. FIG. 10 is a plan view showing a configuration of a gear housing in the electric motor unit of FIG. 9. FIG. 10 is a perspective view showing an assembly structure of a gear housing portion in the electric motor unit of FIG. 9. It is explanatory drawing which shows the structure of the conventional motor unit. It is explanatory drawing which shows the assembly structure of the motor unit of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric motor unit 2 Motor part 3 Deceleration mechanism part 4 Output shaft 5 Motor housing 6 Gear housing 6a Gear chamber (inner chamber part)
7 Magnet 8 Amateur 9 Rotating shaft 10 Case part 11a, 11b 11c Bearing 12 Slot 13 Amateur core 14 Amateur coil 15 Commutator 15a Body 15b Commutator piece 16 Brush holder 17a, 17b Brush 18 Pigtail 19 Motor power terminal 21 Connector part 22 Electricity System connection hole 23 Worm 24 Worm wheel 25 Electromagnetic clutch (electrical member)
26 Gear cover 27 Field rotor 28 Amateur 29 Boss part 30 Leaf spring 31 Bearing 32 Coil 33 Flange 34 Clutch tooth 35 Amateur hub 36 Clutch tooth 37, 37a, 37b Slip ring 38 Male terminal 39 Female terminal 41 Coil bobbin 42 Unit main body 43a, 43b Contact Plate (contact member)
44 Contact unit 45 Gear chamber bottom surface 46, 46a, 46b Clutch power terminal 47 Caulking portion 48 Contact portion 49 Communication hole 51 Guide portion 52 Introduction guide 53 Screw 54 Clutch assembly 55 Electrical connection hole 61 Motor unit 62 Motor portion 63 Deceleration mechanism portion 64 Gear housing 65 Worm wheel 66 Relay plate 67 Output shaft 67a Swing arm 68 Contact unit mounting hole 69 Contact unit 71 Contact plate 72 Power supply connector 73 Power supply connector mounting hole 74 Harness 75 Connector 76 Bracket 77 Connecting rod

Claims (4)

An electric motor unit comprising: a motor having a rotation shaft; a speed reduction mechanism that reduces the rotation of the rotation shaft and transmits the rotation shaft to an output shaft; and a housing that houses the speed reduction mechanism,
A bottomed cylindrical case portion formed in the housing and having an open end.
A contact member attached to the bottom surface of the inner chamber portion formed in the case portion;
An electric motor unit comprising: an electric member disposed in the inner chamber portion adjacent to the contact member and supplied with power by the contact member.   2. The electric motor unit according to claim 1, wherein the electric member is attached to the case portion in a state where the contact member is attached to a bottom surface of the inner chamber portion.   3. The electric motor unit according to claim 1, wherein the contact member extends from the bottom surface of the inner chamber portion toward the opening side and faces the bottom surface of the inner chamber portion of the assembly including the electric member. An electric motor unit, which is in contact with a contact provided on the motor.   4. The electric motor unit according to claim 1, wherein the electric member is an electromagnetic clutch, and the contact member is in contact with a slip ring provided in an assembly including the electromagnetic clutch. 5. An electric motor unit.

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