JPH07179149A - Draining structure of stay of sideview mirror for automobile - Google Patents

Abstract

PURPOSE:To make water hardly remain on the bottom wall of a stay by leading the water on the bottom wall of a stay main body of a sideview mirror for automobile to a draining hole. CONSTITUTION:A draining hole 5 passing through the bottom wall 3 of a stay main body 1 is formed, and furthermore, grooves 6 communicated with the draining hole 5 and formed narrower as they come closer to the draining hole 5 are formed, and the water left in the groove 6 is led to the draining hole 5 by the surface tension (capillary tube phenomenon).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stay drainage structure for an automobile door mirror.

[0002]

2. Description of the Related Art Conventionally, an automobile door mirror is composed of a visor which is a casing of a mirror body and a stay which rotatably holds the visor.
A metal mounting plate for fixing to the vehicle body, a metal supporting board having a fulcrum shaft for rotatably supporting the visor,
It is composed of a mounting plate and a stay body that is a cover of the support substrate. The stay main body is composed of a substantially triangular side wall that covers the mounting plate from the outside of the vehicle body, and a bottom wall that covers the support substrate from below and holds the supporting plate at substantially right angles to the mounting plate. It is integrally molded with synthetic resin according to the design.

In this structure, since the bottom wall is formed so as to receive the supporting substrate from below, there is a possibility that water may accumulate on it, but in that case, the visor rotation mechanism constructed on the fulcrum shaft of the supporting substrate. The components may rust. Therefore, a drainage hole is usually formed in the bottom wall in order to avoid the accumulation of water.

[0004]

However, in the above-mentioned configuration, even if the drain hole is formed, water drops may remain on the bottom wall at the end, or the water may spread thinly on the bottom wall. There was a case that could not come out sufficiently. Therefore, the technical problem to be solved by the present invention is to guide the water on the bottom wall to the drain hole so that the water is less likely to remain on the bottom wall.

[0005]

In order to solve the above-mentioned technical problems, the water drainage structure for a vehicle door mirror stay according to the present invention is constructed as follows. That is,
In this structure, a water draining hole is formed through the bottom wall of the stay, and further, a groove is formed on the bottom wall, the groove communicating with the water draining hole and narrowing toward the water draining hole.

[0006]

[Operation / Effect] In the above configuration, when water is collected on the bottom wall, the water flows through the groove into the water drain hole and further flows out from the water drain hole. In this case, the water in the groove naturally moves to the narrower side in the groove due to the surface tension (capillary phenomenon), and enters the drain hole. In addition, the water droplets remaining in the portions other than the groove will be guided toward the water drain hole if they fall into the groove due to vibration of the automobile. Therefore, it becomes difficult for water to remain on the bottom wall.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A water draining structure for an automobile door mirror stay according to an embodiment of the present invention shown in FIGS. 1 and 2 will be described in detail below. FIG. 1 is a perspective view of a stay body to which this drainage structure is applied, and FIG. 2 is a sectional view taken along the line II-II of FIG.

As shown in the figure, the stay body 1 has a triangular side wall 2 that covers a metal mounting plate (not shown) for fixing to the vehicle body from the outside, and a fulcrum shaft that rotatably supports the visor. It is integrally formed with a bottom wall 3 which covers a metal support substrate (not shown) from below and holds it at a substantially right angle to the mounting plate. The bottom wall 3 is formed with a boss 4 having a screw hole for attaching the support substrate with a bolt.

A drain hole 5 is formed in the bottom wall 3 of the stay body 1. Further, on the surface of the bottom wall 3, three grooves 6 communicating with the water drain holes 5 are formed. Each groove 6
Has a shape in which the width becomes narrower toward the drain hole 5, and water drops remaining on the bottom wall 3 easily flow into the drain hole 5.

In the present embodiment, when the water accumulated on the bottom wall 3 escapes from the drain hole 5, the water passes through the groove 6 and enters the drain hole 5. In this case, water naturally moves in the groove 6 from the wide side to the narrow side due to the surface tension (capillary phenomenon). Therefore, the water on the bottom wall 3 can flow into the drain hole 5 more easily than when the groove 6 is not formed. For this reason, since water is less likely to remain on the bottom wall 3, it is possible to prevent problems such as rusting of the components of the visor rotation mechanism formed on the fulcrum shaft of the support substrate.

Further, the water droplets remaining in the portion of the bottom wall 3 where the groove 6 is not formed move toward the water drain hole 5 when they drop into the groove 6 due to vibration of the automobile, etc. As the water drains better. Although three grooves 6 are formed in this embodiment, the number of grooves 6 may be appropriately determined as needed.

[Brief description of drawings]

FIG. 1 is a perspective view of a stay body to which a water draining structure according to an embodiment of the present invention is applied.

FIG. 2 is a sectional view taken along the line II-II of the stay main body of FIG.

[Explanation of symbols]

 1 stay main body 2 side wall 3 bottom wall 4 boss 5 drain hole 6 groove

Claims (1)

[Claims] 1. A water drainage structure for a stay (1) of an automobile door mirror, wherein a drainage hole (5) is formed in a bottom wall (3) of the stay (1) so as to penetrate the bottom wall (3). And a groove (6) communicating with the drainage hole (5) and narrowing toward the drainage hole (5) is formed on the bottom wall (3). Door mirror stay drainage structure.