JP7096097B2 - Door mirror storage unit - Google Patents

Description

The present disclosure relates to a door mirror storage unit.

Conventionally, as described in Patent Document 1, a vehicle mirror device including a storage mechanism for rotating a door mirror is known.

Japanese Unexamined Patent Publication No. 2007-106311

In the configuration of Patent Document 1, the fitted case and cover support the motor while accommodating the motor. Further, in the axial direction of the motor, an elastic body provided between the case and the motor and between the cover and the motor supports the motor. In this configuration, a plurality of elastic bodies are provided inside the case and the cover, which complicates the configuration of the device.

In addition, relatively high dimensional accuracy is required at the location of the case or cover where the elastic body is provided. When the dimensional accuracy at the location of the case or cover where the elastic body is provided is low, the position of the elastic body may be displaced, the force of the elastic body to support the motor may be small, and the motor may rattle. If the motor rattles, the motor may vibrate and make noise when the door mirrors rotate.

An object of the present disclosure is to provide a door mirror storage unit that suppresses vibration of a motor with a simple configuration.

The present disclosure is a door mirror storage unit (11, 12) that makes the door mirror (4) provided in the vehicle (1) rotatable. The door mirror storage unit includes a motor (30), a motor case (65), and a motor support (80, 280).

The motor can rotate with the door mirrors. The motor case can accommodate the motor. The motor support portion is formed in an annular shape, is provided on the motor case so that the inner surface (81) of the motor support portion comes into contact with the outer surface (66) of the case, and is deformable in the radial direction of the motor. .. The outer surface of the case is the outer surface of the motor case in the radial direction of the motor. The motor case has a support hole (68) communicating in the radial direction of the motor on the outer surface of the case, and the motor support portion contacts the motor through the support hole.

When the inner surface of the motor support portion comes into contact with the outer surface of the case, the motor support portion exerts a contact force acting on the motor case from the radial outer side to the radial inner surface of the motor. Due to the contact force, the inner surface of the motor case comes into contact with the sleeve, and the motor is supported and fixed to the motor case. Since the motor support portion is provided on the outside of the motor case, the motor support portion can be easily attached and the configuration of the door mirror storage unit becomes simple. Further, the contact force causes the inner surface of the motor case to come into contact with the sleeve to fix the motor, so that rattling of the motor can be suppressed. Since the rattling of the motor is suppressed, the vibration of the motor is suppressed.

The block diagram of the vehicle which uses the door mirror storage unit of this embodiment. The block diagram of the door mirror which uses the door mirror storage unit of this embodiment. Sectional drawing of the door mirror storage unit of 1st Embodiment. FIG. 3 is an enlarged view of the IV part. FIG. 3 is a sectional view in the radial direction of the motor before the motor support portion in the door mirror storage unit of the first embodiment is deformed. FIG. 4 is a sectional view taken along line VI-VI of FIG. FIG. 3 is a sectional view in the radial direction of the motor after the motor support portion in the door mirror storage unit of the first embodiment is attached to the motor case and the motor support portion is deformed. The sectional view in the radial direction of the motor support part in the door mirror storage unit of 2nd Embodiment. FIG. 3 is a cross-sectional view of the door mirror storage unit of the second embodiment when the motor support portion is deformed in the axial direction. FIG. 3 is a cross-sectional view when the motor support portion in the door mirror storage unit of the second embodiment is restored. FIG. 3 is a cross-sectional view when the motor support portion in the door mirror storage unit of another embodiment is deformed in the axial direction.

Hereinafter, embodiments of the door mirror storage unit will be described with reference to the drawings. In a plurality of embodiments, substantially the same configuration will be described with the same reference numerals. Further, the present embodiment includes a plurality of embodiments. The door mirror storage unit of the present embodiment is used for the door mirror 4 provided in the vehicle 1. First, the vehicle 1 and the door mirror 4 will be described.

As shown in FIG. 1, the vehicle 1 includes a left door 2 and a right door 3. The left door 2 and the right door 3 can be opened and closed, and a door mirror 4 is provided for each of the left door 2 and the right door 3. The door mirror 4 allows the driver of the vehicle 1 to visually recognize the rear of the vehicle 1 or the periphery of the vehicle 1.

The forward direction of the vehicle 1 is "front". The backward direction of vehicle 1 is defined as "rear". Further, the upper side when viewed from the forward direction is defined as "upper". The lower side when viewed from the forward direction is "down". The vertical direction and the vehicle height direction, which is the height direction of the vehicle, are the same direction. Further, the right side when viewed from the forward direction is defined as "right". The left side when viewed from the forward direction is "left". The left-right direction and the vehicle width direction, which is the vehicle width direction, are the same direction.

As shown in FIG. 2, the door mirror 4 includes a housing 5 and a mirror 6. The housing 5 is formed in the shape of a bottomed cylinder and is made of resin. The mirror 6 is housed in the housing 5. The mirror 6 can reflect a mirror image including the vehicle or the periphery of the vehicle. With the door mirror storage unit of the present embodiment, the housing 5 is rotated so that the door mirror 4 can be stored.

(First Embodiment)
As shown in FIG. 3, the door mirror storage unit 11 includes a unit case 20, a motor 30, a speed reducer 40, a clutch 45, a shaft 60, a motor case 65, a gear cover 70, and a unit cover 75.

The unit case 20 can be mounted on the housing 5 and has a unit cylinder portion 21, a unit bottom portion 22, and a unit mounting portion 23. The unit cylinder portion 21 accommodates the shaft 60, the motor case 65, and the gear cover 70. Further, the unit cylinder portion 21 accommodates and supports the speed reducer 40. The unit bottom 22 is a portion of the unit case 20 that closes the lower end of the unit cylinder 21, and supports the speed reducer 40. Further, the unit bottom 22 includes a hole 24. The shaft 60 is inserted into the hole 24, and the unit bottom 22 supports the shaft 60. The unit mounting portion 23 is integrally connected to the unit cylinder portion 21 and the unit bottom portion 22 and is fixed to the housing 5.

The motor 30 is composed of, for example, a commutator motor and has a sleeve 31 and a motor output shaft 32. The sleeve 31 includes a rectangular cross section, and includes a field magnet and an armature (not shown) inside. The field is fixed to the inner wall of the sleeve 31. The armature is rotatably provided inside the field. The motor output shaft 32 is a rotation shaft of an armature. In the cross-sectional view, the motor 30 is schematically shown in white in order to clarify the location of the motor 30.

The speed reducer 40 can rotate while being supported by the unit cylinder portion 21 and the unit bottom portion 22. The speed reducer 40 has a first worm 41, a first worm wheel 51, a second worm 42, and a second worm wheel 52, decelerates the rotation of the motor output shaft 32, and rotates to the shaft 60 via the clutch 45. Communicate power. In the figure, the first worm 41, the first worm wheel 51, the second worm 42, and the second worm wheel 52 are schematically described.

The first worm 41 is rotatably fitted with the motor output shaft 32 together with the motor output shaft 32. The first worm wheel 51 meshes with the first worm 41. The second worm 42 is rotatably fitted with the first worm wheel 51 together with the first worm wheel 51. The second worm wheel 52 meshes with the second worm 42. Further, the second worm wheel 52 faces the clutch ring 46, and includes a wheel recess 53 on the clutch ring 46 side.

The clutch 45 can transmit the rotational force of the speed reducer 40 to the shaft 60, and has a clutch ring 46 and a clutch spring 47. The clutch ring 46 is provided between the second worm wheel 52 and the unit bottom portion 22, and includes a clutch convex portion 48 on the second worm wheel 52 side. The clutch convex portion 48 can be rotatably fitted with the wheel concave portion 53 together with the wheel concave portion 53. Further, the clutch ring 46 is formed in an annular shape and is rotatably fitted to the shaft 60 together with the shaft 60. In the figure, the wheel concave portion 53 and the clutch convex portion 48 are exaggerated.

One end of the clutch spring 47 is provided on the plate 49 and the other end is provided on the second worm wheel 52, and the second worm wheel 52 is urged toward the clutch ring 46. The wheel concave portion 53 and the clutch convex portion 48 are fitted by the urging force of the clutch spring 47. When the motor 30 rotates, the rotational force is transmitted to the clutch ring 46 via the first worm 41, the first worm wheel 51, the second worm 42, and the second worm wheel 52. When the rotational force is transmitted to the clutch ring 46, the clutch ring 46 rotates and the shaft 60 rotates.

The shaft 60 extends in the vertical direction and is rotatable while being supported by the bottom portion 22 of the unit. The lower end portion 61 of the shaft 60 is formed so as to have a relatively large diameter, and is formed so as to easily engage with the unit bottom portion 22.

The motor case 65 is formed in a cylindrical shape and has a shape corresponding to the sleeve 31, and can accommodate the motor 30. The motor case 65 is made of, for example, resin, and is provided so that the upper end portion of the sleeve 31 is exposed.

The gear cover 70 can protect the reducer 40 and the clutch 45. Further, the gear cover 70 is formed of, for example, resin, and is integrally formed with the motor case 65. The gear cover 70 is attached to the unit case 20 together with the motor 30 housed in the motor case 65.

The unit cover 75 is formed in a bottomed cylinder shape and is fitted to the upper end portion of the unit cylinder portion 21. The unit cover 75 extends in a linear direction connecting the motor 30 and the shaft 60, and functions as a waterproof means and a dustproof means for the motor 30, the speed reducer 40, and the clutch 45.

Conventionally, as described in Patent Document 1, a vehicle mirror device including a storage mechanism for rotating a door mirror is known. In the configuration of Patent Document 1, the fitted case and cover support the motor while accommodating the motor. Further, in the axial direction of the motor, an elastic body provided between the case and the motor and between the cover and the motor supports the motor.

In this configuration, a plurality of elastic bodies are provided inside the case and the cover, which complicates the configuration of the device. In addition, relatively high dimensional accuracy is required at the location of the case or cover where the elastic body is provided. When the dimensional accuracy at the location of the case or cover where the elastic body is provided is low, the position of the elastic body may be displaced, the force of the elastic body to support the motor may be small, and the motor may rattle. If the motor rattles, the motor may vibrate and make noise when the door mirrors rotate. Therefore, the door mirror storage unit 11 of the present embodiment has a simple configuration and suppresses the vibration of the motor 30.

As shown in FIG. 4, the door mirror storage unit 11 further includes a motor support portion 80. The inner surface of the motor support portion 80 is referred to as the inner surface of the support portion 81. The outer surface of the motor case 65 on the radial outer side of the motor 30 is referred to as the case outer surface 66. The inner surface of the motor case 65 on the radial inner side of the motor 30 is referred to as the case inner surface 67.

As shown in FIGS. 5 and 6, the motor support portion 80 is formed in an annular shape. The motor support portion 80 is formed, for example, in an annular shape, and is formed so that the cross section of the motor support portion 80 in the radial direction has a circular shape. The motor support portion 80 is provided so as to be on the radial outer side of the motor case 65 so that the inner surface 81 of the support portion contacts the outer surface 66 of the case and along the outer surface 66 of the case, and the motor is provided via the motor case 65. 30 and the motor case 65 can be supported. When the inner surface 81 of the support portion comes into contact with the outer surface 66 of the case, the inner surface 67 of the case comes into contact with the sleeve 31.

The motor support portion 80 is made of rubber or resin, and is elastically deformable in the radial direction of the motor 30 or the motor case 65. The motor support portion 80 may be plastically deformable. The motor support portion 80 is elastically deformed along the outer surface 66 of the case. The minimum inner diameter of the motor support portion 80 before elastic deformation is defined as the support portion inner diameter Ds. The maximum outer diameter of the motor case 65 is defined as the case outer diameter Dc. The motor support portion 80 is formed so that the inner diameter Ds of the support portion is smaller than the outer diameter Dc of the case.

Further, the motor case 65 has a support hole 68 at a portion located at a corner of the motor 30. The support hole 68 communicates with the motor 30 in the radial direction. The motor support portion 80 is deformed from the radial outer side to the radial inner side of the motor 30, and the inner surface 81 of the support portion is in contact with the sleeve 31 via the support portion hole 68. The dimensions of the motor support portion 80 and the motor case 65 are adjusted so as to be deformed in this way.

[1] As shown in FIG. 7, when the inner surface 81 of the support portion comes into contact with the outer surface 66 of the case, the motor support portion 80 exerts a contact force Fa, which is a force acting from the radial outer side to the radial inner surface of the motor 30. It acts on the motor case 65. Due to the contact force Fa, the inner surface 67 of the case comes into contact with the sleeve 31, and the motor 30 is supported and fixed to the motor case 65.

Since the motor support portion 80 is provided on the outside of the motor case 65, the motor support portion 80 can be easily attached and the configuration of the door mirror storage unit 11 becomes simple. Further, since the contact force Fa causes the inner surface 67 of the case to come into contact with the sleeve 31 to fix the motor 30, rattling of the motor 30 can be suppressed. Since the rattling of the motor 30 is suppressed, the vibration of the motor 30 is suppressed.

[2] The motor support portion 80 can be elastically deformed in the radial direction of the motor 30 or the motor case 65. As a result, the restoring force Fe generated when the motor support portion 80 is deformed acts on the motor case 65 from the radial outer side to the radial inner side of the motor 30. The restoring force Fe improves the force for fixing the motor 30. Therefore, the vibration of the motor 30 is further suppressed.

[3] The motor support portion 80 is formed so that the inner diameter Ds of the support portion is smaller than the outer diameter Dc of the case. As a result, when the motor support portion 80 is provided on the motor case 65, the motor support portion 80 is easily deformed. When the motor support portion 80 is easily deformed, the restoring force Fe is improved. As the restoring force Fe increases, the force for fixing the motor 30 improves, and the vibration of the motor 30 is further suppressed.

[4] The motor support portion 80 is in contact with the sleeve 31 via the support portion hole 68, and acts on the motor 30 with a direct contact force Fd, which is a force from the radial outer side to the radial inner side of the motor 30. .. When the motor support portion 80 comes into direct contact with the motor 30, the force for fixing the motor 30 is improved. Further, the fixing force of the motor 30 is improved, and the vibration of the motor 30 is further suppressed.

[5] The motor support portion 80 is made of rubber or resin. Since the rubber or resin has a high energy absorption capacity, when the motor 30 vibrates, the vibration energy of the motor 30 propagated to the motor support portion 80 is easily converted into thermal energy or deformation energy of the motor support portion 80. As a result, the vibration of the motor 30 is further suppressed.

(Second Embodiment)
As shown in FIG. 8, the motor support portion 280 in the door mirror storage unit 12 of the second embodiment is formed so as to correspond to the shape of the motor case 65, and further has a plurality of convex portions 281. The convex portion 281 extends from the inner surface 81 of the support portion toward the inside in the radial direction of the motor 30.

As shown in FIG. 9, when the motor support portion 280 is attached to the motor case 65, the convex portion 281 is deformed in the axial direction of the motor 30 or the motor case 65 when it comes into contact with the outer surface 66 of the case. When the convex portion 281 is located in the support hole 68, the convex portion 281 is restored to its original shape.

As shown in FIG. 10, when the convex portion 281 is restored to its original shape, the convex portion 281 comes into contact with the sleeve 31. The second embodiment also has the same effect as that of the first embodiment.

(Other embodiments)
[I] As shown in FIG. 11, in the door mirror storage unit 12 of the second embodiment, the position of the support portion hole 68 is not limited to the corner portion of the motor case 65. The support hole 68 may be formed in a flat surface portion of the outer surface 66 of the case.

[Ii] The shape of the sleeve of the motor is not limited, and the sleeve of the motor may have a circular shape, an elliptical shape, or a polygonal cross section. The motor case may be formed so as to correspond to the shape of the sleeve of the motor, and the motor support portion may be formed so as to correspond to the shape of the motor case.

As described above, the present disclosure is not limited to such an embodiment, and can be implemented in various forms without departing from the spirit of the present disclosure.

1 ... Vehicle,
4 ・ ・ ・ Door mirror,
11, 12 ... Door mirror storage unit,
30 ... Motor,
65 ・ ・ ・ Motor case, 66 ・ ・ ・ Case outer surface,
80, 280 ... Motor support, 81 ... Inner surface (inner surface) of the support.

Claims (4)

A door mirror storage unit (11, 12) that makes the door mirror (4) provided in the vehicle (1) rotatable.
A motor (30) that can rotate with the door mirror and
A motor case (65) capable of accommodating the motor and
It is formed in an annular shape, and is provided on the motor case so that the inner surface (81) comes into contact with the outer surface (66) of the case, which is the outer surface of the motor case in the radial direction of the motor, and is provided in the radial direction of the motor. Motor support (80, 280) that can be transformed into
Equipped with
The motor case has a support hole (68) communicating in the radial direction of the motor on the outer surface of the case.
The motor support portion is a door mirror storage unit that comes into contact with the motor through the support portion hole . The door mirror storage according to claim 1 , wherein the motor support portion (80) is formed so that the inner diameter (Ds) of the motor support portion before deformation is smaller than the outer diameter (Dc) of the motor case. unit. The door mirror storage unit according to claim 1 or 2 , wherein the motor support portion (280) deforms in the axial direction of the motor when it comes into contact with the outer surface of the case. The door mirror storage unit according to any one of claims 1 to 3 , wherein the motor support portion is made of rubber or resin.

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