JP2013193590A - Mirror stay for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure which can absorb impact from the front in addition to rotations in both right and left directions through the utilization of the engagement by a magnet in a mirror stay for an automobile.SOLUTION: A mirror stay for an automobile consists of a base member 10 which is fixed to a vehicle body, of a turning rod 20 which has a base end side fixed to the base member 10 so as to be rotatable around a substantially vertical rotary shaft, has a mirror fixed on a tip side and forces the rotary shaft to be biased in a direction separating from the vehicle body by an elastic member 13 while allowing slide in a given range with respect to a direction toward the vehicle body to the base member 20, and of a movement control part which is formed in a coupling part of the base member 10 and turning rod 20 and formed of an engagement part 14 containing a magnet 14a provided to either of the base member 10 and turning rod 20 and an engaged part containing a magnet or magnetic body adsorbed to the magnet 14a provided to either of the base member 10 and turning rod 20.

Description

  The present invention relates to a mirror stay for a rearview mirror provided on a vehicle body of an automobile.

The mirror stay is formed so as to be able to rotate around a vertical rotation axis so as not to be damaged when subjected to an impact, and the rotation is restricted by a mechanical engagement means in which the concave portion and the convex portion are engaged. Things are common. Such mechanical engagement means may fail or fail to function due to wear, dust accumulation, or the like.
On the other hand, the following patent documents show a magnet provided as an engaging means. When a magnet is used as the engaging means, the operation does not become unstable due to wear or the like, and there is almost no influence of dust or the like, so that the problem in the mechanical engaging means can be solved.

JP-A-3-213443

By the way, many of the external rearview mirrors can rotate from the outside of the vehicle body toward the rear side, but often do not rotate to the opposite side. Further, the rearview mirror may receive not only a rotating force but also a load that presses against the vehicle body side. In particular, the rearview mirror of a large vehicle such as a truck projects forward from the windshield, so it receives an impact from the front of the rearview mirror or an impact that causes the rearview mirror to fall inward from the front of the car. There are many things.
In view of such a problem, the present invention provides a structure capable of absorbing an impact from the front in addition to both left and right rotations by using engagement with a magnet in a mirror stay for an automobile. Let it be an issue.

In order to solve the above problems, the present invention has the following configuration.
The invention according to claim 1 is a base member fixed to the vehicle body, and a rotating rod that fixes the mirror on the distal end side, which is fixed to the base member so that the base end side is rotatable about a substantially vertical rotation axis. The rotating shaft is an automobile mirror stay having a rotating rod that is slidable within a certain range with respect to the base member in the direction toward the vehicle body and is biased in a direction away from the vehicle body by an elastic member. . And the engaging part which has the magnet provided in any one of the said base member or the said rotating rod formed in the connection part of the said base member and the said rotating rod, and the said base member or the said rotating rod A movement restricting portion including a magnet to be attracted to the magnet provided in any one of them and an engaged portion having a magnetic body.
According to a second aspect of the present invention, in the mirror stay, the base member and the rotating rod are provided at two positions above and below the vehicle body, and the mirror is fixed between the upper and lower rotating rods.

According to the first aspect of the present invention, the rotating rod for fixing the mirror can be rotated to the left and right with respect to the base member, and can also move to the vehicle body side, and these operations are performed by a movement restricting portion using the attractive force of the magnet. Since the movement is restricted, the rotating rod is normally fixed by the magnet's attracting force, but when it receives an impact stronger than the engaging force of the magnet, the engagement by the magnet is released and the mirror is fixed. The rotating rod can absorb the impact by rotating left and right and immersing in the vehicle body side. By restricting the movement by the engagement with the magnet in this way, it is difficult to cause malfunction due to wear or accumulation of dust, etc., and it is possible to reduce the impact from either the left or right and the impact toward the vehicle body, It is suitable as a mirror stay for large vehicles protruding forward.
Since the invention according to claim 2 is a structure that supports the upper and lower sides of the mirror, it can hold a large mirror for a large vehicle.

It is a perspective view of the mirror stay concerning an embodiment. (A) is a longitudinal cross-sectional view of an upper mirror stay, (b) is a longitudinal cross-sectional view of a lower mirror stay. (A) is a top view of an upper mirror stay, (b)-(d) is a top view which shows operation | movement of an upper mirror stay.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a mirror stay X according to this embodiment. The mirror stay X forms a rearview mirror that is fixed to the front pillar P of a large automobile. The mirror stay X includes an upper mirror stay Xa and a lower mirror stay Xb, and holds and fixes the upper and lower portions of the mirror M with the upper mirror stay Xa and the lower mirror stay Xb, respectively.

FIG. 2A shows a longitudinal sectional view of the upper mirror stay Xa. The upper mirror stay Xa includes a base portion 10 fixed to the front pillar, and a rotating rod 20 that fixes the upper portion of the mirror M at the tip.
The base portion 10 is arranged on the base end side of the base main body 11 formed of a square pipe with a flange for bolting to the front pillar on the base end side, the spring pressing portion 12 for partitioning the inside of the base main body 11, and the distal end side of the spring pressing portion 12. The compression spring 13 that is formed, and the pivot main body 11 provided on the upper and lower surfaces of the pivot rod holding portion 14 and the pivot rod holding portion 14 that are formed by cutting out both side surfaces on the distal end side of the base main body 11. A long hole 15 formed along the longitudinal direction of the base body 11 and a cover 16 made of rubber covering the base end side of the base body 11. A cap 13 a is put on the tip of the compression spring 13.
The pivot rod 20 includes a pivot rod main body 21 formed of a square pipe whose base end side is closed in a plan view, a through hole 22 provided on the proximal end side, and the pivot rod main body 21 at the base end portion of the base portion 20. A half-screw bolt and a nut provided with a loosening-preventing function that are inserted between the eaves holding part 14 and fixed so as to pass through the through hole 22 and the elongated hole 15 of the base part 20. The rotary shaft 23 is composed of
A magnet 14a is fixed to the lower surface of the tip of the upper plate body of the rotating rod holder 14 of the base portion 20, while the rotating rod main body 21 is made of 400 series stainless steel as a magnetic material. As the magnet 14a, a magnet having a strong magnetic force such as a neodymium magnet is used. The rotary shaft 23 of the rotary rod 20 is pushed to the tip side by the compression spring 13, and the rotary shaft 23 is located at the tip side of the elongated hole 15, and the rotary rod main body 21 and the magnet 14a are attracted to each other. The palpit 20 is fixed so as not to move in a normal state. The magnet 14a and the rotary rod main body 21 made of a magnetic material constitute a movement restricting portion with the magnet 14a as an engaging portion and a portion that is attracted to the magnet 14a of the rotary rod main body 21 as an engaged portion.

FIG. 2B shows a longitudinal sectional view of the lower mirror stay Xb. The lower mirror stay Xb includes a base portion 30 fixed to the front pillar and a rotating rod 40 that fixes the lower portion of the mirror M at the tip.
The base portion 30 is obtained by mixing a base end portion 31 formed of a short square pipe with a flange for bolting to the front pillar on the base end side, and carbon fiber fixed to the base end portion 31 by screws. A base flange portion 32 made of a square bar whose front end side made of reinforced rubber is rounded in plan view, a through hole 33 formed at the front end of the base flange portion 32, and a cover 34 made of rubber that covers the base end side of the base body 11. Consists of
The rotating rod 40 includes a rotating rod main body 41 formed of a square pipe whose base end side is closed, a base rod holding portion 42 formed of a plate body fixed to the upper and lower surfaces of the rotating rod main body 41 by welding, and a base A through-hole 43 provided in the saddle-clamping portion 42, and a tip of the base flange portion 32 of the base portion 30 are sandwiched by the base-rod-holding portion 42. In this state, the rotary shaft 44 is composed of a half-screw bolt that is fixed so as to pass through the nut and a nut provided with a locking function.

Next, a method for using the mirror stay X having the above-described configuration and the operation and effect will be described below. Normally, the upper mirror stay Xa is fixed so that the rotary rod 20 does not move when the compression spring 13 extends and the rotary shaft 23 is at the tip position and the magnet 14a is attracted to the rotary rod 20. FIG. 3A shows a plan view of the upper mirror stay Xa in this state. During operation, the mirror M is fixed in this state.
Here, if an impact from the lateral direction is applied to the mirror M, a force that turns the rotating rod 20 is generated, so that the magnet 14a and the rotating rod 20 are attracted to each other as shown in FIG. It is possible to prevent the mirror M and the mirror stay X itself from being damaged by the rotation of the rotating rod 20. At this time, the rotating rod 40 of the lower mirror stay Xb also rotates around the rotation shaft 44. Even when the mirror stay X rotates in this way, the vehicle can be stopped again by stopping the vehicle and returning the pivot rod 20 to the original position by hand.
Further, when an impact is applied from the front end side of the rotary rod 20 in the longitudinal direction, the upper mirror stay Xa causes the rotary shaft 20 to contract the compression spring 13 as shown in FIG. Move to. Moreover, the magnet 14a and the rotation copy 20 function as a movement resistance by sliding while adsorbing. At this time, the lower mirror stay X alleviates the impact by the elastic deformation of the base flange 32 made of reinforced rubber. The driver is often able to recognize the impact from the front, and in most cases the brake is not in time, or the calculation is slightly out of order and the mirror touches the wall etc. By reducing the above, breakage of the mirror M and the mirror stay itself is suppressed.
Further, with respect to the impact from obliquely forward, the upper mirror stay Xa absorbs the impact by rotating the rotary shaft 20 and rotating the rotary rod 20 as shown in FIG. can do. At this time, the lower mirror stay Xa can absorb the impact by the elastic deformation of the base collar portion 32 made of reinforced rubber and the rotation of the rotary collar 40. In many cases, the mirror M receives an impact from an oblique direction. Therefore, the mirror according to the present embodiment can be applied in more aspects than the case where the impact is applied to the mirror M as compared with the case where the impact is reduced only by the rotation mechanism. The stay X can function effectively.

In the above embodiment, the lower mirror stay Xb is not provided with a magnet movement restricting portion, but the lower mirror stay Xb may be provided with a magnet to form a movement restricting portion. Furthermore, the same structure as the upper mirror stay Xa may be adopted for the lower mirror stay Xb. Further, the upper mirror stay Xa is formed so that the rotation shaft of the rotary rod moves within a certain range and is biased toward the tip side by the compression spring and the elongated hole, but like the lower mirror stay Xb, By forming the connecting portion of the base portion with the pivot rod by an elastic body, the rotating shaft may move within a certain range and be urged toward the tip side. In the above embodiment, the base member is provided with a magnet and the rotating rod is a magnetic body that is attracted by the magnet. However, the base member may be a magnetic body and the rotating rod may be provided with a magnet. It is good.
Then, in the above embodiment, a double-sided rearview mirror is illustrated for a large vehicle, but it can also be used as a mirror stay for a cantilever rearview mirror with a structure having only one set of a base portion and a rotating rod. .

X Mirror stay Xa Upper mirror stay Xb Lower mirror stay
M Mirror 10 Base part 11 Base part main body 13 Compression spring 14 Rotating scissor holding part 15 Long hole 20 Rotating scissor 21 Rotating scissor main body 22 Through hole 23 Rotating shaft 30 Base part 31 Base part end part 32 Base collar part 33 Through Hole 40 Rotating rod 41 Rotating rod main body 42 Base rod clamping part 43 Through hole 44 Rotating shaft

Claims (2)

A base member fixed to the vehicle body;
A pivot rod fixed to the base member so that a base end side thereof is rotatable about a substantially vertical rotation axis, and a mirror is fixed on a distal end side, wherein the rotation axis is in a direction toward a vehicle body with respect to the base member. A rotating rod that is slidable within a certain range and is biased in a direction away from the vehicle body by an elastic member;
An engaging portion having a magnet provided on either the base member or the rotary rod, formed at a connection portion between the base member and the rotary rod, and either the base member or the rotary rod. A mirror stay for an automobile having a movement restricting portion including a magnet to be attracted to the magnet provided or an engaged portion having a magnetic body.   3. The mirror stay according to claim 1, wherein the base member and the rotary rod are provided at two positions above and below the vehicle body, and the mirror is fixed between the upper and lower rotary rods.

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