JP2003081015A - Side mirror device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a resonance produced when a mirror holder 6 receives a vibration almost equal to the natural frequency of the mirror holder from a body in a side mirror formed by supporting the mirror holder 6 with a mirror plate 7 on a mirror body 2 so as to be swung in vertical and lateral directions. SOLUTION: A dynamic damper 11 is projectedly installed in a space S formed on the rear side of the mirror holder 6 in the mirror body 2 so as to be projected from the mirror holder 6. Thus the resonance can be damped by the dynamic damper 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a side mirror device attached to a vehicle door or the like.

[0002]

2. Description of the Related Art Today, a vehicle is equipped with a side mirror on a body portion such as a door. Such a side mirror is a mirror holder in which a mirror plate is attached to a mirror body side which constitutes a mirror body. Is pivotally supported vertically and horizontally via a pivot. However, such a side mirror receives a complicated vibration from the body, and some of such vibrations have a frequency close to the natural frequency on the mirror holder side. There is a problem that the mirror plate resonates with the mirror holder under the vibration and the visibility is impaired.

[0003]

Therefore, as shown in FIG. 4, the base end portion of the spring 12 for preventing blurring is attached to the mirror holder 2, and the tip end portion of the spring 12 is abutted against the bracket 3 in a resilient manner. It is proposed to reduce the resonance on the mirror plate 7 side. However, this has a problem in that it is difficult to control the contact state of the spring 12 with the bracket 3, and therefore variations inevitably occur between products, and stable and efficient resonance reduction cannot be achieved. There is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems. A mirror holder provided with a mirror plate on the mirror body side is provided. A side mirror device for a vehicle, which is swingably mounted vertically and horizontally via a pivot, wherein the mirror holder is provided with a dynamic damper for damping resonance on the mirror holder side. It is a side mirror device for. By doing so, when the mirror holder side resonates, this can be attenuated and the visibility can be prevented from being impaired. In this structure, the dynamic damper can be characterized in that it is arranged in a space formed between the mirror body and the mirror holder. The space formed between the body and the mirror holder can be effectively used and secured. Also, in this structure, a bracket for mounting an actuator for forcibly swinging the mirror holder is incorporated in the mirror body, and the dynamic damper is arranged in a space formed on the tip side of the bracket. Can be a feature, and when you do this,
Even if the mirror holder can be forcibly rocked, the space for disposing the dynamic damper can be effectively secured. Further, in these devices, the dynamic damper includes a support piece integrally projecting from a mirror holder made of resin and having an elastic function, and a holder portion that is a vibrating member integrally coupled and molded through the support piece. It can be characterized in that it is configured by including, and in this case, the support piece and the holder portion that configure the dynamic damper can be integrally formed with the mirror holder. Further, in these, the dynamic damper is configured to include a holder portion integrally formed by projecting from a resin mirror holder through an elastic support piece, and a cone as a mass substance fixed to the holder portion. By doing so, the holder portion and the cone serve as a substantial dynamic damper, and simplification of the child mold can be achieved.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described based on the drawings. In the drawings, 1
Is a mirror body of an electric side mirror device, and the mirror body 1 includes a mirror body 2 formed in a bowl shape, a bracket 3 fixedly supported by the mirror body 2, and a unit case 4 attached to the bracket 3. Is constituted by various member devices such as a resin-made mirror holder 6 pivotally supported in the unit case 4 through a pivot 5 in a vertically and horizontally swingable manner, a mirror plate 7 attached to the mirror holder 6, and the like. For example, the mirror holder 6 is forcibly oscillated by forward / reverse driving of a pair of motors 8 and 9 which are actuators installed in the unit case 4, whereby the mirror angle can be automatically adjusted. Both are conventional.

The rear surface of the mirror body 2 on the tip side of the mirror holder has a space S without the bracket 3.
The supporting piece 6a integrally projects from the mirror holder 6 with the same resin material so as to project to the space S side. The support piece 6a has a tip end side that is further bent toward the tip end side of the mirror holder 6 into a substantially L-shape, and a bottomed shallow cylindrical holder portion 6b is integrally formed at the bent tip end. A cone 10 made of iron or the like, which is a weight member, is internally provided (fixed) to the holder portion 6b to form a dynamic damper 11. The cone 10 is formed on the periphery of the opening of the holder portion 6b. The stopper claw 6c is forcibly fitted into and attached to the stopper claw 6c, so that it can be attached by one-touch and is prevented from coming off after the attachment.
The dynamic damper 11 is set to vibrate when the vibration received from the machine body side resonates when the natural frequency of the mirror holder 6 side is close to or coincides with the natural frequency and attenuates the resonance.

In the embodiment of the present invention configured as described above, in the side mirror, the vibration received from the body side is
When the mirror holder 6 and the mirror plate 7 are integrated with each other and the natural frequency is close to or coincides with the natural frequency, the mirror holder 6
Although the side will resonate, the dynamic damper 11 vibrates in response to the resonance and attenuates the resonance. As a result, resonance on the side of the mirror holder 6 is not attenuated and the visibility of the side mirror is not impaired.

Further, in this structure, the dynamic damper 11 is arranged in the mirror body 2 in the space S between the rear surface of the mirror holder 6 and the tip of the bracket 3. Although the mirror holder 6 is forcibly swung, it is not necessary to separately secure an installation space, and the space S can be used effectively.

In addition, since the supporting piece 6a and the holder portion 6b constituting the dynamic damper 11 are integrally formed by projecting from the mirror holder 6 with the same resin material, these moldings can be performed simultaneously with the molding of the mirror holder 6. Manufacturing process is simplified. Moreover, dynamic damper 1
1 is an ammunition for damping the resonance by vibrating the holder part 6b as a result of the holder part 6b with the cone 10 being formed on the tip side through the rod-shaped (rod-shaped) support piece 6a. The supporting piece 6a connecting the mirror holder 6 and the holder portion 6b functions, and the structure can be simplified. Further, in the holder portion 6b, since the cone 10 is internally fitted as a mass substance, the sum of the weight of the cone 10 and the weight of the holder portion 6b is substantially the mass for vibration. Therefore, the dynamic damper can be downsized.

[Brief description of drawings]

FIG. 1 is a front view of an electric side mirror.

FIG. 2 is a horizontal sectional view of an electric side mirror.

FIG. 3 is an enlarged horizontal sectional view of a dynamic damper part.

FIG. 4 is a horizontal cross-sectional view of a side mirror proposed before the present invention.

[Explanation of symbols]

1 Mirror body 2 Mirror body 3 brackets 6 Mirror holder 7 Mirror plate 11 Dynamic damper S space

Claims (5)

[Claims] 1. A side mirror device for a vehicle, wherein a mirror holder provided with a mirror plate is attached to a mirror body side so as to be swingable vertically and horizontally via a pivot. A side mirror device for a vehicle, which is provided with a dynamic damper for damping the resonance of the vehicle. 2. The side mirror device for a vehicle according to claim 1, wherein the dynamic damper is arranged in a space formed between the mirror body and the mirror holder. 3. The mirror body according to claim 2, wherein
A side mirror device for a vehicle, characterized in that a bracket for mounting an actuator for forcibly swinging the mirror holder is internally provided, and a dynamic damper is arranged in a space formed on a tip side of the bracket. 4. The dynamic damper according to claim 1, 2 or 3, wherein the dynamic damper is integrally formed by projecting from a resin mirror holder and having a supporting piece having an elastic function. A side mirror device for a vehicle, comprising: a holder portion which is a vibrating member. 5. The holder according to claim 1, 2, 3 or 4, wherein the dynamic damper is integrally formed by projecting from a resin mirror holder via an elastic support piece, and fixed to the holder portion. A side mirror device for a vehicle, comprising a cone as a mass substance.