JP4290286B2 - Mirror device for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle mirror device such as an electric door mirror or a fender mirror equipped in a vehicle such as a passenger car, a bus, a truck, or an industrial vehicle.
[0002]
[Prior art]
For example, the electric door mirror 1 as a vehicle mirror device shown in a perspective view in FIG. 9 is configured such that the mirror body 3 can be retracted to the storage position with respect to the mounting base 2 by a remote control operation from inside the vehicle (not shown). It is possible to return to the return position or to adjust the mirror body 4 to an angular position suitable for the backward confirmation from the driver's seat.
[0003]
As shown in an exploded perspective view in FIG. 10, the mirror body 3 includes a mirror body 4, a base member 5 that supports the mirror body 4, and an electric device that performs electrical drive control of the mirror body 4. The case body 6 and the gear mechanism (not shown) are built in.
[0004]
The case body 6 includes a lower case 6a and an upper case 6b joined to the lower case 6a. As shown in an exploded perspective view in FIG. 11, a pair of motors 7 as a power source, a pair of drive shafts 8 for driving the mirror body 4 (see FIG. 10), and the like are incorporated in the lower case 6a. The motor 7 and the drive shaft 8 constitute an electric device referred to in this specification.
[0005]
A pair of anti-vibration rubbers 9 are attached to the lower case 6a for anti-vibration / sound-proofing of the motors 7, and a pair of waterproof rubbers 10 for waterproofing the periphery of the drive shaft 8 are provided. Attached by gluing. The vibration-proof rubber 9 and the waterproof rubber 10 correspond to the soft parts referred to in this specification.
[0006]
[Problems to be solved by the invention]
In the conventional door mirror 1, since it is necessary to attach the vibration-proof rubber 9 and the waterproof rubber 10 to the lower case 6a by bonding one by one, it is necessary to increase the number of steps for assembling the rubber 9 and 10. Further, since the vibration-proof rubber 9 and the waterproof rubber 10 are different in shape, it is necessary to carry out transportation, storage, and inventory management for each of the rubbers 9 and 10, and the management man-hours also increase.
[0007]
The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide a vehicle mirror that can reduce the number of steps for assembling and managing soft parts that have been conventionally required. To provide an apparatus.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention for solving the above-mentioned problems , a motor that is a power source of an electric device that performs electrical drive control of a mirror body, and a drive shaft for driving the mirror body are incorporated in a resin case body. A vehicle mirror device,
In the case body, a motor installation part for installing the motor and a shaft insertion part for arranging the drive shaft are formed,
The motor installation portion is integrated with a vibration-proof soft material, and the motor is installed on the vibration-proof soft material.
The shaft insertion portion is integrated with a waterproof soft material, and the drive shaft is inserted in close contact with the waterproof soft material,
The vibration-proof soft material and the waterproof soft material are made of a thermoplastic elastomer of the same quality, and are formed independently of each other by molding different materials in the motor installation portion and the shaft insertion portion of the case body. This is a vehicle mirror device. If comprised in this way, it will become unnecessary to attach the soft part conventionally required to the case body by adhesion | attachment, and the assembly man-hour of a soft part can be reduced. In addition, since it is not necessary to transport, store, and manage inventory of soft parts, the number of management steps can be reduced. The “different material molding” in the present specification is a well-known molding method called “two-material molding”, “two-color molding”, or the like.
[0009]
As in the vehicle mirror device according to the second aspect of the present invention , a through hole is formed in the motor installation portion, and at the time of forming the different material, a part of the vibration-proof soft material protrudes from the back surface through the through hole and comes off. It is good to bulge as a stop.
Further, as in the vehicle mirror device according to the invention of claim 3, an annular flange portion is formed on the inner peripheral surface of the shaft insertion portion, and the waterproof soft material embeds the flange portion when forming the different material In this way, it is preferable to form an annular shape.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
The first embodiment will be described with reference to the drawings. Since the first embodiment is a modification of the lower case 6a (see FIGS. 9 to 11) of the case body 6 in the door mirror 1 described in [Prior Art], the lower case 6a will be described in detail. In other parts, the same reference numerals are assigned to the same parts, and redundant description is omitted.
[0011]
1 is a perspective view of the lower case 6a, FIG. 2 is a plan view of the lower case 6a, FIG. 3 is a bottom view of the lower case 6a, FIG. 4 is a left side view of the lower case 6a, and FIG. 5 is a rear view of the lower case 6a. . 1 to 5, on the inner surface of the lower case 6a, a motor installation portion 61 that is recessed in a substantially rectangular shape for installing a pair of motors 7 (see FIG. 11) as a power source, and the mirror body 4 (see FIG. 10). ) And a substantially cylindrical shaft insertion portion 62 in which a pair of drive shafts 8 (see FIG. 11) for driving are disposed.
[0012]
A connecting portion 63, an engaging portion 64, and the like with the upper case 6b (see FIG. 10) are formed on the peripheral portion of the lower case 6a. Further, a support portion 65 is formed on the outer surface of the lower case 6a to support the base member 5 (see FIG. 10) in a rotatable manner. The lower case 6a is made of a resin such as ABS or polyacetal.
[0013]
Each motor installation unit 61 is configured as described below. Since both the motor installation parts 61 have substantially the same configuration, only one will be described, and description of the other will be omitted. As shown in FIG. 6 which is a sectional view taken along line VI-VI in FIG. 2, a through hole 61a is formed in the substantially central portion of the motor installation portion 61 of the lower case 6a.
[0014]
An anti-vibration soft material 66 made of a thermoplastic elastomer for anti-vibration / sound-proofing of the motor 7 (see FIG. 11) is integrated with the periphery of the through hole 61a of the motor installation portion 61 by different material molding. . The vibration-proof soft material 66 is formed in a substantially rectangular plate shape (see FIG. 2). Further, as shown in FIG. 6, a part of the vibration-proof soft material 66 protrudes from the back surface (outer surface) through the through-hole 61a when the different material is formed, and bulges as a retaining portion 66a. A motor 7 (see a two-dot chain line 7 in FIG. 6) is installed on the vibration-proof soft material 66.
[0015]
Each shaft insertion portion 62 is configured as described below. Since both the shaft insertion parts 62 have substantially the same configuration, only one will be described, and description of the other will be omitted. As shown in FIG. 7 as a sectional view taken along line VII-VII in FIG. 2, a flange portion 62a is formed in a substantially annular shape at the lower portion of the inner peripheral surface of the shaft insertion portion 62 of the lower case 6a (FIGS. 2 and 3). reference).
[0016]
As shown in FIGS. 2 and 7, a waterproof soft material 67 for waterproofing the peripheral portion of the drive shaft 8 (see FIG. 11) is formed on the peripheral portion of the flange portion 62 a of the shaft insertion portion 62 by different material molding. It is integrated. The waterproof soft material 67 is made of the same thermoplastic elastomer as the vibration-proof soft material 66. The waterproof soft material 67 is formed in a substantially annular shape so as to bury the flange portion 62a. A seal lip 67a is formed on the inner peripheral surface of the waterproof soft material 67. The seal lip 67a has a substantially lip-shaped cross section and forms a shaft insertion hole 67b having a slightly smaller diameter than the outer diameter of the drive shaft 8 (see FIG. 11). Yes. The drive shaft 8 (see the two-dot chain line 8 in FIG. 7) is inserted into the shaft insertion hole 67b of the waterproof soft material 67 in close contact.
[0017]
According to the vehicle mirror device provided with the lower case 6a described above, the vibration-proof soft material 66 and the waterproofing material are provided on the resin case body 6 containing the electric device for controlling the electric drive of the mirror body 4 (see FIG. 1). The soft material 67 is integrated by different material molding. For this reason, unlike the conventional case, it is no longer necessary to attach the soft parts (see the conventional anti-vibration rubber 9 and the waterproof rubber 10) that are conventionally required to the case body 6, thereby reducing the number of steps for assembling the soft parts. can do. In addition, since it is not necessary to transport, store, and manage inventory of soft parts, the number of management steps can be reduced.
[0018]
Further, the vibration-proof soft material 66 and the waterproof soft material 67 are made of a thermoplastic elastomer. For this reason, the thermoplastic elastomer exhibits a rubber elasticity like a vulcanized rubber at room temperature, but is a polymer material that can be easily plasticized and molded at a high temperature. This is suitable for integrating the soft material 67 for use by different material molding.
[0019]
In addition, a part of the vibration-proof soft material 66 is bulged as a retaining portion 66a on the outer surface through the through hole 61a during molding of the different material, so that the vibration-proof soft material 66 is firmly attached to the motor installation portion 61 of the lower case 6a. (See FIG. 6).
[0020]
Further, by burying the flange portion 62a with the waterproof soft material 67, the waterproof soft material 67 can be firmly integrated with the shaft insertion portion 62 of the lower case 6a (see FIG. 7).
[0021]
[ Related technologies ]
Related technology will be described with reference to the drawings. Since the related technique is a modification of the lower case 6a of the case body 6 in the door mirror 1 described in the first embodiment, the changed part will be described in detail, and the same reference numerals are assigned to the same parts in the other parts. Thus, duplicate description is omitted.
[0022]
As shown in an exploded perspective view of the case body 6 in FIG. 8, a waterproof soft material 68 made of a thermoplastic elastomer for waterproofing is integrated with the joint surface of the lower case 6a with the upper case 6b by molding different materials. Yes. The waterproof soft material 68 is formed in a substantially rectangular tube shape. The joint surface of the upper case 6b is in close contact with the waterproof soft material 68 in a sealed state.
[0023]
According to the related art , it is not necessary to interpose soft parts such as seal packing between the lower case 6a and the upper case 6b of the case body 6 one by one. Therefore, it is possible to reduce the man-hours for assembling the soft parts. In addition, since it is not necessary to transport, store, and manage inventory of soft parts, the number of management steps can be reduced.
[0024]
The present invention is not limited to the embodiment described above, and can be modified without departing from the gist of the present invention. For example, instead of the lower case 6a , the soft materials 66, 67, 68 can be formed of different materials in the upper case 6b. Further, the through hole 61a in the motor installation portion 61 of the lower case 6a of the case body 6 and the flange portion 62a in the shaft insertion portion 62 may be excluded.
[0025]
【The invention's effect】
According to the vehicle mirror device of the present invention, since the soft material is integrated into the resin case body by different material molding, it is possible to reduce the man-hours for assembling and managing the soft parts required conventionally.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lower case in a first embodiment.
FIG. 2 is a plan view of a lower case.
FIG. 3 is a bottom view of the lower case.
FIG. 4 is a left side view of the lower case.
FIG. 5 is a rear view of the lower case.
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a cross-sectional view taken along line VII-VII in FIG.
FIG. 8 is an exploded perspective view of a case body in the related art .
FIG. 9 is a perspective view of a door mirror showing a conventional example.
FIG. 10 is an exploded perspective view showing main built-in components of the mirror body.
FIG. 11 is an exploded perspective view showing a part to be assembled to the lower case.
[Explanation of symbols]
1 Door mirror (mirror device for vehicles)
4 Mirror body 6 Case body 6a Lower case 66 Soft material for vibration isolation 67 Soft material for waterproofing 68 Soft material for waterproofing

Claims (3)

A motor mirror device that is a power source of an electric device that performs electrical drive control of a mirror body, and a vehicle mirror device in which a drive shaft for driving the mirror body is built in a resin case body ,
In the case body, a motor installation part for installing the motor and a shaft insertion part for arranging the drive shaft are formed,
The motor installation portion is integrated with a vibration-proof soft material, and the motor is installed on the vibration-proof soft material.
The shaft insertion portion is integrated with a waterproof soft material, and the drive shaft is inserted in close contact with the waterproof soft material,
The anti-vibration soft material and the waterproof soft material are made of the same quality thermoplastic elastomer, and are independently formed by different material molding at the motor installation portion and the shaft insertion portion of the case body. Mirror device for vehicles. 2. The vehicle mirror device according to claim 1, wherein a through hole is formed in the motor installation portion, and a part of the vibration-proof soft material protrudes to the back surface through the through hole when the different material is formed, and prevents the motor from being detached. A mirror device for a vehicle characterized by being bulged as a portion . 2. The vehicle mirror device according to claim 1, wherein an annular flange portion is formed on an inner peripheral surface of the shaft insertion portion, and the waterproof soft material is buried in the flange portion when the different material is formed. The vehicle mirror device is formed in a ring shape.

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