JP2000217299A - Waterproof cover for motor and wiper motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof cover for a motor that can be fitted to the motor, with a simple configuration, and is stably fixed to the motor without backlashes due to vibration, in the cover fitted state. SOLUTION: In wiper motor 1, a motor 4 is assembled to a housing 3 of a deceleration part 2, while a yoke 5 is exposed. A waterproof cover 9 is made of a synthetic resin, and is equipped with a cover part 10 with shape nearly corresponding to the outer enclosure of the deceleration part 2 and a fitting part 11 for pinching the outer-periphery surface of the yoke 5. The cover part 10 is formed in a shape, where an upper-surface part and an opposite side are opened by the upper-surface part and a peripheral wall 10b, and the fitting part 11 is inflated and formed at one part of the periphery wall 10b. In the waterproof cover 9, a groove 13 for leading a lead wire 8 to a side being nearly opposite to a position, where the fitting part 11 is provided for leading to the outside of the waterproof cover 9 is formed. At the base edge part of the groove 13, a retention part 15 with an elastic piece 16 for pinching the lead wire 8 with the base edge part of the groove 13 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor waterproof cover for preventing rainwater from entering the inside of a motor and a wiper motor provided with the cover.

[0002]

2. Description of the Related Art In recent years, the arrangement space of a wiper motor has been limited due to the density of various devices and components arranged in an engine room, and the wiper motor may be arranged in a cowl. When the wiper motor is arranged in the cowl, the wiper motor is located by the airflow from which rainwater that has entered the cowl from the cowl top panel (cowl top grill), which has an air introduction hole for taking in air to the air conditioner. There is a concern that rainwater may enter the electric device portion of the wiper motor. Therefore,
Measures have been taken to prevent rainwater from splashing on the electric device portion by installing a waterproof cover that covers the speed reduction portion of the wiper motor, particularly where the electric device portion is disposed.

As shown in FIG. 8, a wiper motor 51 has a structure in which a DC motor 54 is mounted on a housing 53 of a speed reduction unit 52 having a built-in speed reduction mechanism. The waterproof cover 55 is made of a synthetic resin. The projecting side of the drive shaft (the back side of the paper surface in FIG. 8) provided in the speed reduction unit 52 is opened, and a part of the yoke 54 a of the DC motor 54 and an electric device part 58 are opened. Is formed in a shape that covers the housing 53 in which the is disposed. Then, as shown in FIG.
The waterproof cover 55 is fixed to the wiper motor 51 such that a part of the cover covers a part of the yoke 54a. Also,
As shown in FIG. 9B, the lead wires 56 such as a power supply line and a signal line are bundled, and the waterproof cover 55 is inserted into a groove 57 formed in a side wall (peripheral wall) 55 a of the waterproof cover 55.
Is derived outside. The groove 57 is formed to have a width such that the lead wire 56 can move freely.

Japanese Unexamined Patent Publication No. Hei 5-49202 discloses a structure in which a cover for covering a circuit board for terminal connection mounted on a side surface of a motor is provided with notches at diametrically opposed positions of a motor case. There is disclosed a cover provided with an elastically displaceable engaging portion which engages with each notch at an opening end of a cover. The cover is fixed in a state of being positioned with respect to the motor case by the locking portion being locked in the notch of the motor case.

Japanese Patent Application Laid-Open No. 6-6951 discloses a housing of a DC axial fan motor for preventing a lead wire from coming off. As shown in FIG. 10 (a), a groove 64 is formed in a spoke 63 connecting a housing central portion 61 and a housing outer peripheral portion (flange portion) 62, and a key-shaped groove 65 is formed in an outer edge on an extension of the groove 64. I have. The key-shaped groove 65 forms a narrow insertion opening 67 for the lead wire 66 and a locking hole 68. And the lead wire 66 is shown in FIG.
As shown in FIGS. 0 (a) and (b), it is inserted into the locking hole 68 and led out below the housing outer peripheral portion 62. Therefore,
Even if the lead wire 66 is pulled upward, the lead wire 66 is prevented from being caught by the key portion 69 and coming off the insertion opening 67.

[0006]

SUMMARY OF THE INVENTION The wiper motor 51
Since the waterproof cover 55 attached to the device has a structure in which the yoke 54a is sandwiched by a part of the waterproof cover 55, if the sandwiching force is small, it may rattle due to vibration or the like, or the waterproof cover may be damaged by a small external force. It will be out of position.
On the other hand, if the holding force of the waterproof cover 55 on the yoke 54a is increased, the mounting work becomes difficult.

In the cover described in Japanese Patent Application Laid-Open No. 5-49202, the cover is fixed in a state of being positioned with respect to the motor case by a combination of the notch and the locking portion. However, when this configuration is applied to a waterproof cover, it is necessary not only to change the structure of the waterproof cover, but also to form a new notch on the motor case side, that is, to newly form a notch. Becomes complicated,
It cannot be applied to existing motors. (The motor itself must be provided with a special structure for attaching a waterproof cover.) Further, in the configuration of JP-A-6-6951, the lead wire 6
Although there is a function of preventing 6 from being detached from the groove 64,
The lead wire 66 is not fitted to the outer peripheral portion 62 of the housing. Therefore, even if this configuration is applied to a structure for attaching the waterproof cover to the motor, the waterproof cover cannot be attached to the motor without rattling.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a first object of the present invention is to cause rainwater to splash on an introduction portion for introducing a lead wire into a motor or an electric device provided outside the motor. An object of the present invention is to provide a waterproof cover for a motor which can be mounted on the motor with a simple configuration, and which is fixed to the motor in a stable state without rattling due to vibration or the like. It is a second object of the present invention to provide a wiper motor having a waterproof cover that can be mounted with a simple configuration, does not rattle after mounting, and can fix a lead wire at a predetermined position.

[0009]

In order to achieve the first object, according to the first aspect of the present invention, an introduction portion is mounted so as to clamp an outer peripheral surface of a yoke of a motor and introduces a lead wire into the motor. A waterproof cover for the motor covering the motor and the terminal portion, wherein the cover is formed in a shape in which an upper surface portion and a peripheral wall are open on a side opposite to the upper surface portion, and a part of the peripheral wall sandwiches a yoke outer peripheral surface of the motor. A mounting portion is formed, and a lead-out portion that leads the flexible lead wire to the outside of the cover is formed at a position different from the mounting portion on the peripheral wall, and the lead portion holds and holds the lead wire. A part is formed.

According to a second aspect of the present invention, in the first aspect of the present invention, the lead-out portion comprises a slit-shaped groove formed in the peripheral wall, and the holding portion is provided near a base end of the groove. An elastic piece is provided to narrow the groove width and hold the lead wire.

According to a third aspect of the present invention, in the second aspect of the present invention, the groove is bent so that an angle between the groove near the base end and a direction in which the front end of the groove extends is substantially 90 degrees or less. Is formed.

According to a fourth aspect of the present invention, there is provided a motor unit, a speed reducing unit mounted on the motor unit for reducing the rotational output of the motor unit and outputting the rotation output. A wiper motor provided with a lead wire connected to a control unit provided in a speed reduction unit for controlling rotation of the motor unit, wherein the wiper motor has a waterproof cover that covers at least the control unit, and the waterproof cover is A cover portion substantially corresponding to the outer periphery of the deceleration portion and formed in a shape in which the upper surface portion and the peripheral wall are open on the side opposite to the upper surface portion, and formed so as to sandwich the motor portion outer peripheral surface formed on a part of the peripheral wall. A mounting portion to be mounted, and a lead-out portion formed at a position different from the mounting portion on the peripheral wall and leading out the flexible lead wire to the outside of the cover portion. Holding portion for fixing and holding the lead wire is formed.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, the lead-out portion comprises a slit-like groove formed in the peripheral wall, and the holding portion is provided near a base end of the groove. An elastic piece is provided to narrow the groove width and hold the lead wire.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, the waterproof cover covers the speed reducer such that the output shaft of the speed reducer is located on the open side of the waterproof cover. It is attached to the motor unit in a state, and is installed in a vehicle in a state where an open side is a lower side.

(Operation) According to the first aspect of the present invention, the cover is attached to the motor with the mounting portion sandwiching the outer peripheral surface of the yoke of the motor. Further, a lead wire connected to the motor is led out of the cover from a lead portion provided at a position different from the mounting portion, and the lead wire is fixed and held by a holding portion provided in the lead portion. That is, since the cover is fixed to the motor by the mounting portion and the holding portion, the cover is held in a stable state without rattling due to vibration or the like without increasing the holding force of the mounting portion so much.

According to a second aspect of the present invention, in the first aspect of the invention, when the cover is attached to the motor, the lead wire is inserted into the groove, and the lead wire is moved along the groove from the distal end to the proximal end of the groove. When the lead wire is pushed toward the base end portion, the lead wire is fixed to the cover while being held between a part of the groove and the elastic piece.

According to a third aspect of the present invention, in the second aspect of the present invention, the groove is bent so that an angle between the groove near the base end and a direction in which the front end of the groove extends is substantially 90 degrees or less. Therefore, even if an external force is applied to the lead wire toward the tip end of the groove, the lead wire is unlikely to come out of the sandwiched state.

According to the fourth aspect of the present invention, the wiper motor is provided with a waterproof cover for covering the control unit provided in the speed reduction unit, and rain water is applied to the control unit and the end of the lead wire connected to the control unit. Is prevented. The waterproof cover has the mounting portion sandwiching the outer peripheral surface of the motor portion and the holding portion fixedly holding the lead wire, that is, the waterproof cover is fixed to the wiper motor at two different locations. Therefore, even if the holding force of the mounting portion is not so strong, the mounting portion is maintained in a stable state without rattling due to vibration or the like. Further, since the lead wire is fixed to the waterproof cover, even when the leading end side of the lead wire is moved to connect the lead wire to the external electric device, the movement of the lead wire located inside the lead-out portion is restricted. No excessive force is applied to the terminals of the lead wires.

According to a fifth aspect of the present invention, when the waterproof cover is attached to the wiper motor according to the fourth aspect of the present invention, after attaching the mounting portion to the yoke, the lead wire is inserted into the groove, and the waterproof wire is inserted into the groove. Along the groove from the distal end to the proximal end. When the lead wire is pushed down to the base end of the groove, the lead wire is fixed to the waterproof cover while being held between a part of the groove and the elastic piece.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, the wiper motor is installed on the vehicle with the open side of the waterproof cover facing downward. Therefore, the rainwater on the waterproof cover falls along the peripheral wall as water drops.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the wiper motor 1 has a configuration in which a motor 4 is mounted on a housing 3 of a speed reduction unit 2 in which a speed reduction mechanism (not shown) is built. The motor 4 is assembled to the housing 3 with the yoke 5 exposed. A DC motor is used as the motor 4.

The speed reduction mechanism incorporated in the speed reduction unit 2 is composed of a worm fixed to the output shaft of the motor 4 and a worm wheel meshing with the worm. An output shaft 6 extending in a direction orthogonal to the worm is fixed to the center of the worm wheel so as to be integrally rotatable. The output shaft 6 is disposed such that one end protrudes from the housing 3.
A drive lever 7 connected to a link that converts the rotational motion of the output shaft 6 into a swinging motion of the wiper shaft is fixed to the output shaft 6 so as to be integrally rotatable. The housing 3 has a plurality of screw holes 3a (only one screw hole is shown) for fixing the wiper motor 1 to a mounting bracket for mounting the wiper motor 1 on a vehicle.

The speed reduction unit 2 is provided with a control unit (not shown) for controlling the rotation of the motor 4 on the side opposite to the position where the output shaft 6 is provided. The control unit forms an electric circuit up to the home position even if the switch of the wiper device is turned off at random, and after the circuit is cut off, the armature circuit is short-circuited and the electric brake is applied to stop the wiper motor at the home position. To control. The control unit outputs a rotation signal of the motor 4 and supplies and shuts off an external DC power to the motor 4. A lead line such as a signal line for outputting the rotation signal and a power supply line of an external power supply is electrically connected to the control unit.
Each lead is bundled into one lead 8,
The outside is covered with a covering member (for example, a tube) made of rubber or a flexible synthetic resin, and is led out of a waterproof cover 9 described later. At the end of the lead wire 8, a connector 8a for connecting to an external electric device is provided. The speed reduction mechanism and the control unit are known.

The wiper motor 1 has a waterproof cover 9 covering at least the control section. The waterproof cover 9 is made of a synthetic resin and includes a cover portion 10 having a shape substantially corresponding to the outer periphery of the speed reduction portion 2 and a mounting portion 11 for holding the outer peripheral surface of the yoke 5 as shown in FIGS. . The cover portion 10 is formed in a shape in which the opposite side of the upper surface portion 10a and the peripheral wall 10b from the upper surface portion 10a is opened. The mounting portion 11 is a peripheral wall 10b
And has a diameter slightly smaller than the outer diameter of the yoke 5 and is approximately ３ of the circumferential length of the outer peripheral surface of the yoke 5.
A plurality of (five in this embodiment) plate portions 12 having arc-shaped contact surfaces 12a having a length of
It is composed of

A groove 13 is formed on the waterproof cover 9 as a lead-out portion for leading the lead wire 8 to the outside of the waterproof cover 9 at a position substantially opposite to the position where the mounting portion 11 is provided. The groove 13 is formed in a slit shape, the base end is located on the upper surface portion 10a side, the front end is opened to the open end side of the cover portion 10, and the angle formed by the direction in which the front end side of the groove 13 extends near the base end is substantially equal. It is formed in a shape (L-shape) bent at 90 degrees.
The portion of the peripheral wall 10b where the groove 13 is formed is
Is formed so as to bulge outward in order to secure a substantially quadrangular prism-shaped space 14 in which the lead wire 8 can freely move between the side surface of the peripheral wall 10b and the inner surface of the peripheral wall 10b. The groove 13 is formed to have a width such that the lead wire 8 can move freely.

The groove 13 is formed with a holding portion 15 for fixing and holding the lead wire 8. The holding portion 15 is provided at a base end of the groove 13. The holding portion 15 includes an elastic piece 16 provided near the base end of the groove 13 so that the width of the groove is reduced at the base end of the groove 13 and the lead wire 8 is pressed and held by the elastic piece 16. Has become. The tip of the elastic piece 16 is formed in a round shape so as not to damage the lead wire 8.

Next, the waterproof cover 9 constructed as described above is used.
The operation of the wiper motor 1 will be described. When attaching the waterproof cover 9 to the wiper motor 1, first, the waterproof cover 9
The open end of the cover portion 10 corresponds to the side opposite to the output shaft 6 of the housing 3, and the open end of the mounting portion 11 is arranged in contact with the yoke 5 to press the waterproof cover 9 toward the wiper motor 1. The pressing force applied to the waterproof cover 9 deforms the gap between the open ends of the plate portions 12 so as to expand, and the contact surface 12 a of the plate portion 12 contacts the outer peripheral surface of the yoke 5 to clamp the yoke 5. In this state, the mounting portion 11 is fixed to the yoke 5. At this time, the lead wire 8 is led out to the open end of the cover 10 through the space 14.

Next, the lead wire 8 is connected to the tip (open end) of the groove 13.
Insert from the side and push down to the base end of the groove 13.
The lead wire 8 moves smoothly along the groove 13 up to the vicinity of the base end, and the movement is restricted when it engages with the elastic piece 16 provided near the base end. By increasing the pushing force while the lead wire 8 is engaged with the elastic piece 16, the elastic piece 16 bends, and the lead wire 8 moves over the elastic piece 16 and moves to a position where it comes into contact with the base end of the groove 13. . Then, the lead wire 8 is fixed to the waterproof cover 9 while being sandwiched between the base end of the groove 13 and the elastic piece 16, and the operation of attaching the waterproof cover 9 to the wiper motor 1 is completed.

As shown in FIG. 5, the wiper motor 1 is provided with a cowl 18 provided below a windshield 17 of the automobile.
It is mounted via a mounting bracket 19 therein. The wiper motor 1 is mounted such that the upper surface portion 10a of the waterproof cover 9 is located on the upper side (top direction), the output shaft 6 is on the lower side (ground direction), and the output shaft of the motor 4 extends in the width direction of the automobile. Then, the drive lever 7 is connected to a link that swings the wiper arm. The cowl top panel 20 has an air introduction hole 21 for taking in air into an air conditioner (not shown). Further, the air inlet 2 is located rearward (leftward in FIG. 5) of the wiper motor 1 from the mounting position.
2 are provided.

When the air conditioner is operated, an air flow is generated from the air inlet 21 to the air inlet 22 as shown by an arrow in FIG. 5, and the wiper motor 1 is exposed to the air flow. In case of rain, rainwater enters the cowl 18 from the air introduction hole 21 and a part of the water flows to the wiper motor 1 together with the air flow. Rainwater falls on the waterproof cover 9 or the yoke 5 of the wiper motor 1. The rainwater that has fallen on the waterproof cover 9 falls along the peripheral wall 10b as water drops. York 5
Rainwater that falls on the shore falls as water drops.

A groove 13 for opening the cover 10 to the side is formed in the peripheral wall 10b. However, since the wiper motor 1 is arranged so that the groove 13 faces in a direction perpendicular to the direction of air flow, rainwater Is prevented from entering the cover portion 10 from the groove 13.

This embodiment has the following effects. (1) Since the waterproof cover 9 is fixed to the wiper motor 1 at two locations, the mounting portion 11 and the holding portion 15, unlike the conventional waterproof cover, the waterproof cover 9 can be provided without increasing the clamping force of the mounting portion 11 so much. 9 can be held in a stable state without rattling due to vibration or the like. As a result, generation of noise can be prevented even though the waterproof cover 9 is easily attached.

(2) No change is made to the motor 4 and the housing 3 side. In addition to the conventional mounting portion 11, the lead is formed in the lead-out portion (groove 13) of the lead wire 8 formed in the waterproof cover 9. The waterproof cover 9 can be fixed to the wiper motor 1 in a stable state with a simple configuration in which the holding portion 15 for fixing and holding the wire 8 is provided.

(3) A lead portion for leading the lead wire 8 to the outside of the waterproof cover 9 is formed as a slit-like groove 13, and a holding portion 15 is provided near the base end of the groove 13 so that Elastic piece 16 for narrowing width and holding lead wire 8
It has. Therefore, the waterproof cover 9 is attached to the wiper motor 1.
When the lead wire 8 is inserted into the groove 13, the lead wire 8 is easily inserted into the groove 13 by moving from the distal end side of the groove 13 toward the base end side along the groove 13 and pushing the lead wire 8 to the base end. 13 can be fixed to the waterproof cover 9 while being sandwiched by the elastic pieces 16.

(4) Since the base end of the groove 13 is located near the upper surface 10a of the waterproof cover 9 and the holding part 15 is formed at the base end, the lead wire 8 extends substantially straight from the control part. In this state, it is guided to the holding unit 15. Therefore, compared with the case where the base end portion is formed at a position away from the upper surface portion 10a, when the lead wire 8 is fixed to the holding portion 15, an excessive force is applied to the lead wire 8 connected to the control portion. It becomes difficult to join.

(5) The groove 13 is formed in a shape (L-shape) that is bent substantially 90 degrees in the vicinity of the base end with respect to the direction in which the distal end of the groove 13 extends.
, The lead wire 8 can be prevented from easily coming out of the sandwiched state even when an external force toward the front end side (a force in a direction in which the cover is detached from the wiper motor) acts.

(6) Since the lead wire 8 of the motor 4 is used as one fixing means for fixing the waterproof cover 9 to the wiper motor 1 at two places, the waterproof cover 9 is fixed to the wiper motor 1. Then, the lead wire 8 is also fixed. Therefore, even if the connector 8a side of the lead wire 8 is moved to connect the lead wire 8 to the external electric device, the movement of the lead wire 8 located inside the lead-out portion (groove 13) is regulated, and the lead wire 8 is moved. An excessive force is suppressed from being applied to the terminal portion of the terminal, and disconnection hardly occurs.

(7) The waterproof cover 9 is attached to the wiper motor 1 so that the output shaft 6 of the speed reducer 2 is located on the open side of the waterproof cover 9 so as to cover the speed reducer 2, and the open side is downward (ground direction). It is installed in a vehicle (automobile) in such a state.
Therefore, even if the rainwater splashes on the waterproof cover 9, the water does not fall along the peripheral wall and the water does not accumulate in the waterproof cover 9.

(8) Since the tip of the elastic piece 16 is formed round, the lead wire 8 is not damaged. In addition,
Embodiments are not limited to the above, for example,
It may be embodied as follows.

The shape of the groove 13 is not limited to an L-shape in which the base end is bent at substantially 90 °, and the angle formed by the direction in which the distal end of the groove 13 extends near the base end is smaller than substantially 90 degrees. It may be formed in a bent shape, for example, a J-shape.
Also in this case, even when an external force is applied to the lead wire 8 toward the leading end of the groove 13 as in the case of the L-shape, the lead wire 8 can be prevented from easily coming out of the sandwiched state.

The shape of the groove 13 is not limited to the shape in which the base end is bent, but as shown in FIG. 6A, the groove 13 is formed straight, and the elastic piece 16 forming the holding portion 15 near the base end. May be provided. Further, as shown in FIG. 6B, a pair of elastic pieces 16 constituting the holding portion 15 may be provided in a latch shape.

The holding portion 15 is not limited to the one provided with the elastic piece 16. As shown in FIG. 7 (a), a convex portion 23 is provided near the base end of the groove 13. It is configured to hold the lead wire 8 with the unit. Since the outside of the lead wire 8 is covered with a covering member made of rubber or a flexible synthetic resin, even if the protrusion 23 does not have elasticity,
Is temporarily flattened and passes through a position corresponding to the convex portion 23, and then returns to a shape corresponding to the accommodation space surrounded by the convex portion 23 and the base end surface of the groove 13. Also in this case, the lead wire 8 is fixed and held by the holding portion 15 and is hardly detached from the groove 13.

The lead-out portion is not limited to the slit-shaped groove 13, and as shown in FIG.
An elastic piece 16 may be provided at the open end to form the holding portion 15.

The position of the lead-out portion is not limited to the position substantially opposite to the position of the mounting portion 11, but is, for example, a position that forms an angle of approximately 90 ° with the mounting portion 11 with respect to the center of the speed reduction portion 2. You may.

The mounting portion 11 may be a block having an arc-shaped contact surface instead of the plurality of plate portions 12. ○ The waterproof cover 9 may be made of rubber.

The upper surface 10a of the waterproof cover 9 is not limited to a flat shape but may be a dome shape. In this case, the rainwater applied to the waterproof cover 9 easily flows downward. The waterproof cover 9 is not limited to the wiper motor 1, but may be used in a state where rainwater is applied, and may be applied to other motors in which the control section of the motor or the lead wire lead-out section is not waterproofed. Moreover, you may apply to the motor which is not provided with a speed reduction part.

The inventions (technical ideas) other than those described in the claims that can be grasped from the above embodiments will be described below together with their effects. (1) In the invention described in claim 1 or claim 4,
The lead-out portion is a groove having one end opened, and the holding portion is provided near the base end of the groove, and the width of the groove near the base end is reduced to allow a lead wire disposed at the base end to escape. It is a convex part to regulate. In this case, the structure of the holding portion for fixing and holding the lead wire at the predetermined position is simplified, and the work of fixing the lead wire to the holding portion is simplified.

[0048]

As described above in detail, according to the first to third aspects of the present invention, the waterproof cover is fixed to the motor at two places without adding any special fixing means on the motor side. The cover can be attached to the motor with a simple configuration, and the attached cover is fixed to the motor in a stable state without rattling due to vibration or the like.

According to the second and fifth aspects of the present invention, when the waterproof cover is attached to the motor, the lead wire is easily fixed to the waterproof cover while being sandwiched by a part of the groove and the elastic piece. be able to.

According to the third aspect of the present invention, it is possible to prevent the lead wire from easily coming out of the sandwiched state even when an external force is applied to the lead wire toward the tip end of the groove. According to the invention as set forth in claims 4 to 6, the waterproof cover can be easily attached so as not to rattle after being attached. Also,
The lead wire can be fixed at a predetermined position.

According to the sixth aspect of the present invention, even when rainwater splashes on the waterproof cover, the water falls along the peripheral wall and does not accumulate in the waterproof cover.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wiper motor to which a waterproof cover according to an embodiment is attached.

FIG. 2 is a perspective view of the waterproof cover as viewed from an open side.

FIG. 3 is a bottom view of the waterproof cover.

4A is a partial side view showing a fixed state of a lead wire, and FIG. 4B is a side view showing a holding state of a mounting portion.

FIG. 5 is a schematic view showing a state in which a wiper motor is attached to an automobile.

FIG. 6 is a side view illustrating a configuration of a holding unit according to another embodiment.

FIG. 7 is a side view illustrating a configuration of a holding unit according to another embodiment.

FIG. 8 is a partially broken plan view of a conventional wiper motor having a waterproof cover.

FIG. 9 (a) is a partial view seen from the direction of arrow A in FIG. 8,
(B) is a partial view as seen from the direction of arrow B in FIG. 8.

FIG. 10A is a partial plan view of the related art, and FIG. 10B is a partial front view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wiper motor, 2 ... Reduction part, 3 ... Housing, 4 ...
Motor, 5 ... Yoke, 6 ... Output shaft, 8 ... Lead wire, 9 ...
Waterproof cover, 10 ... cover part, 10a ... top part, 10b
... peripheral wall, 11 ... mounting part, 13 ... groove as lead-out part, 15
... holding part, 16 ... elastic piece.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D025 AA01 AC01 AE02 AE66 AE68 AG21 5H605 AA07 AA08 BB05 BB09 CC02 CC03 CC06 DD17 EA04 EA09 EC01 GG04

Claims (6)

[Claims] 1. A waterproof cover for a motor, which is mounted so as to sandwich an outer peripheral surface of a yoke of a motor and covers an introduction portion and a terminal portion for introducing a lead wire into the motor, wherein the cover has an upper surface portion and a peripheral wall. The upper surface is formed in a shape having an open side opposite to the upper surface, and a mounting portion for sandwiching a yoke outer peripheral surface of the motor is formed in a part of the peripheral wall, and the peripheral wall has flexibility at a position different from the mounting portion. A waterproof cover for a motor, wherein a lead portion for leading a lead wire to the outside of the cover is formed, and the lead portion has a holding portion for fixing and holding the lead wire. 2. The lead-out portion comprises a slit-shaped groove formed in the peripheral wall, and the holding portion is provided near a base end of the groove, and has an elastic piece for narrowing a groove width and holding a lead wire. The waterproof cover for a motor according to claim 1, further comprising: 3. The groove according to claim 2, wherein the groove is formed so as to be bent so that an angle between the groove and a direction in which the leading end of the groove extends near the base end is substantially 90 degrees or less. Waterproof cover for motor. 4. A motor unit, and a reduction unit assembled to the motor unit and configured to reduce the rotation output of the motor unit and output the rotation output.
A wiper motor including a lead wire connected to a control unit provided in the speed reduction unit and controlling the rotation of the motor unit, wherein the wiper motor has a waterproof cover that covers at least the control unit; A cover portion substantially corresponding to the outer periphery of the deceleration portion and formed in a shape in which the upper surface portion and the peripheral wall are open on the side opposite to the upper surface portion, and formed so as to sandwich the motor portion outer peripheral surface formed in a part of the peripheral wall. A mounting portion to be mounted on the mounting portion, and a lead portion formed at a position different from the mounting portion of the peripheral wall to lead the flexible lead wire to the outside of the cover portion. A wiper motor, wherein a holding portion for fixing and holding the lead wire is formed. 5. An elastic piece which is provided near the base end of the groove and which holds the lead wire by narrowing the groove width, wherein the lead-out portion comprises a slit-like groove formed in the peripheral wall. The wiper motor according to claim 4, further comprising: 6. The waterproof cover is attached to the motor unit so as to cover the reduction unit such that the output shaft of the reduction unit is located on the open side of the waterproof cover, and is installed on the vehicle with the open side facing down. The wiper motor according to claim 4, wherein the wiper motor is driven.