JPH0712176Y2 - Back mirror vibration prevention structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vibration preventing structure for a rearview mirror.

[Prior Art] A rearview mirror mounted on a door panel of a moving vehicle such as an automobile generates vibration on the door panel due to engine vibration or swaying while traveling on a bad road, and the vibration is transmitted to the mirror to cause chattering to the mirror. There is a possibility that it will occur and the visibility of the rear side will be deteriorated.

Therefore, increase the plate thickness of the door panel to which the mirror is fixed to increase rigidity to prevent the mirror body from vibrating, or use a bush such as rubber between the mirror body and the vehicle body and the engaging portion of the mirror holder. It was intervening.

However, making the exterior panel of the vehicle body thick causes an increase in weight and a high cost.

Therefore, as shown in FIGS. 4 and 5, the mirror body 50
There is one that solves the above problem by attaching a front door panel 52 and a mirror body 50 with a screw 51 at a position closest to each other, and disposing an elastic body 53 such as rubber at one end of the mirror body 50. .

The elastic body absorbs the vibration generated in the door panel due to the vibration during traveling, and the vibration of the mirror body is suppressed to prevent the mirror from chattering.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, when adjusting the mirror surface angle of the mirror, it is necessary to rotate the mirror body or the mirror holder in any of the vertical and horizontal directions.

Alternatively, the position of the set mirror body may change due to contact with a passerby or an installation object on the road.

Therefore, there is a drawback that a gap is generated between the elastic body and the door panel and it becomes impossible to absorb the vibration.

In addition, the external appearance is impaired from the viewpoint of design, and improvement is desired.

Therefore, the present invention solves the above-mentioned problems by disposing a member for absorbing vibration in the mirror body as described below.

[Means for Solving the Problems] The present invention is to fix a housing to one end of a frame that is disposed inside a mirror body and supports a mirror holder,
Furthermore, a support member consisting of a shaft rod is fixed in the housing,
A weight is movably fitted and inserted substantially in the center of the support member, and dampers such as coil springs are arranged on both sides of the weight so that the weight can be reciprocated along an axial rod. This is a structure for preventing vibration of the rearview mirror.

[Advantage of the Invention] In the present invention, the vibration generated in the vehicle body is transmitted to the frame, and further, the vibration is transmitted to the housing fixed to the frame, and the vibration generated in this housing causes a movement contrary to the mirror body by the damper. Vibrations of the mirror (mirror surface) are prevented by absorbing vibrations by reciprocating the weight in the housing and preventing the vibrations from reaching the mirror holder that holds the mirror surface.

[Embodiment] FIG. 1 is an exploded view showing a support structure of a mirror in an outer mirror, and FIGS. 2 and 3 are a perspective view and a front view showing an embodiment of the present invention. FIG. 2 shows a part of it in an exploded manner, and FIG. 3 shows a state in which it is attached to a frame fixed to the mirror body.

That is, in the rearview mirror M of the present invention, a mirror body 1 is attached to a base B fixed to a door panel P of a truck, a passenger car or the like, and a frame 2 is screwed in a wall surface of the mirror body 1. A mirror holder 3 that is engaged with the frame 2 by an appropriate means such as male and female coupling is detachably attached.

The mirror, which is a mirror body, is held by a rib formed on the peripheral portion of the mirror holder 3.

Then, as shown in the figure, the mirror holder 3 is configured so that it can be removed from the frame 2 and replaced when the mirror is damaged.

According to the vibration prevention structure of the present invention, a shaft rod 11 which is a supporting member is fixed to one end of the frame 2 and is divided into two parts by male and female coupling or the like, and a weight of about 12 g is taken as an example. Weight
12 is fitted into the shaft rod 11 and dampers 13 and 14 such as coil springs are arranged on both sides of the weight 12 to enable reciprocation in the X-axis direction.

That is, a shaft hole 12a is bored in the center of the weight 12 in the X-axis direction, the shaft rod 11 is fitted therein, and the dampers 13 and 14 are supported on the shaft rod 11 at both ends of the weight 12. . This damper 13,14
As an example, a dynamic vibration absorber that always holds the weight 12 from the left and right by a coil spring is formed.

Then, after the housing 10 is integrally joined, the screw 15
Then, it is fixed to the frame 2 of the mirror body M as shown in FIG.

A coil spring is suitable for the damper, but a bellows-shaped rubber hollow member may be used.

Therefore, according to the present invention, when the vibration of the vehicle body is transmitted to the mirror body, vibration is generated in the frame, and this vibration vibrates the housing fixed to the frame.

A damper in the housing causes the weight to reciprocate along the axial direction by this vibration, so that the vibration is absorbed at this portion and the vibration is not propagated to the mirror holder.

[Effects of the Invention] The present invention, even if vibrations from the vehicle body cause vibrations in the frame in the mirror body, the weights and dampers arranged on both sides generate vibrations in a direction opposite to the vibrations. The vibration transmitted to the mirror body is canceled at the stage of the frame to block the vibration to the mirror holder and prevent the vibration to the mirror.

Therefore, even if the vehicle is running on a rough road or uses an engine with a relatively large vibration such as a diesel engine, a clear rear view without chattering can be surely obtained.

In addition, the present invention does not require any change in the appearance of the mirror, only needs to add small unitized parts to the constituent parts of the mirror, and is excellent in workability.

Further, the present invention can prevent an uncomfortable feeling caused by the shake of the mirror at the time of opening and closing the door, improve the texture, provide comfortable and high-class operability, and enhance the commercialability.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which the present invention is applied to an outer mirror of a truck, in which a mirror body and a mirror holder are disassembled, and FIG. 2 is an exploded perspective view showing an embodiment of the present invention. The figure is a front view showing a state of being fixed to a frame of a mirror body, and FIGS. 4 and 5 are a front view and a side view showing a conventional example. 1 ... Mirror body, 2 ... Frame, 3 ... Mirror holder, 10 ... Housing, 11 ... Shaft rod, 12a ... Shaft hole, 12 ...
… Weight, 13,14 …… Damper, 15 …… Screw, M …… Rearview mirror, P …… Door panel.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toru Yamana 1214 Takizawa, Fujieda-shi, Shizuoka 7 (72) Teru Yoshida Teruyoshi 3-11-17 Fujieda, Fujieda-shi, Shizuoka (72) Inventor Masahiro Hosokawa Tokyo Hino 3-1-1 Hinodai, Ichi, Hino Motors Co., Ltd. (56) References: 59-106740 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A casing is fixed to one end of a frame which is disposed inside a mirror body and which supports a mirror holder, and a supporting member composed of a shaft rod is fixed in the casing, and the supporting member is provided. The weight is movably fitted and inserted into the substantially central portion of the, and dampers such as coil springs are arranged on both sides of the weight so that the weight can be reciprocated along the shaft rod. Characteristic rearview mirror vibration prevention structure.