JPH0410119Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a back mirror for a vehicle, and more particularly to an anti-glare mirror for a vehicle in which the support angle of the mirror relative to the stay can be changed using an operating knob.

(Prior art) A mirror with a tapered cross section is provided in a resin housing, and by operating an operating knob of a toggle mechanism provided in the housing, the set angle of the mirror relative to the stay can be slightly changed to allow light to enter during the day and at night. 2. Description of the Related Art Vehicle anti-glare mirrors whose angles can be changed are known. In addition, in this type of vehicle anti-glare mirror, when setting the mirror's field of view, etc., the housing is an elastic body, so when it is bent relative to the bracket as shown in Figure 9, the engagement between the bracket and the housing is There is a risk that the mirror may come off and the mirror may fall off from the housing. For this reason, various proposals have been made to prevent such mirrors from falling off.

For example, according to Japanese Utility Model Publication No. 53-24753, a cover plate of the bracket is interposed between the bracket and the mirror, and this cover plate is fixed to a reinforcing rib in the housing with screws. According to this structure, the cover plate can prevent the bracket from popping out. Further, for example, according to Japanese Utility Model Publication No. 53-24753, a bracket is fixed to a housing by a screw having an unthreaded portion. With this configuration, when the bracket receives force from the ball of the mounting stay, the bracket can move forward by the stroke of the unthreaded portion of the fixing screw, and this stroke prevents the force from moving the housing. It is designed to be able to absorb longitudinal deflection. Further, for example, according to Japanese Utility Model Publication No. 53-24753, protrusions formed on the bracket are inserted into holes provided in reinforcing ribs of the housing to prevent the bracket from popping out.

(Problems to be solved by the invention) However, according to the above-mentioned conventional technology, there are disadvantages such as having to prepare separate parts or making the structure complicated, which further complicates the manufacturing process. Ta.

Therefore, it is an object of this invention to provide a highly reliable anti-glare mirror for a vehicle that has a simple structure and can easily prevent the housing and bracket from falling off, thereby preventing the mirror from falling off.

(Means and effects for solving the problem) In order to achieve this object, the present invention includes a shallow box-shaped resin housing having a front opening, and a tapered cross-sectional shape supported on the inner edge of the opening of the housing. a stay having a bracket engagement portion at one end and a base for fixing to the vehicle at the other end;
A bracket having a mounting portion for the bracket engaging portion of the stay and being disposed within the housing and swingably supporting the housing, and a toggle mechanism that is pivotally engaged with the bracket within the housing. In the anti-glare mirror for a vehicle, the anti-glare mirror for a vehicle is provided with an operation knob that protrudes from the bracket to the outside of the housing and can change the angle of support of the mirror with respect to the stay, in which a knob is provided near the housing rocking engagement portion of the bracket and directed toward the mirror. The present invention is characterized in that a protruding portion is formed that once protrudes and comes into contact with the back surface of the mirror when the housing is bent.

According to such a configuration, even if the housing flexes relative to the bracket due to a load, the protruding portion and the mirror come into contact with each other, so that the mirror itself becomes a single structure, preventing and absorbing the flexure, and flexing beyond a certain level is prevented. Does not occur.

(Embodiments of the invention) Examples of the invention will be described below with reference to the accompanying drawings. Note that the same reference numerals in each figure indicate similar objects.

FIG. 1 is a partial sectional view of an anti-glare mirror for a vehicle according to an embodiment of this invention, which is equipped with a housing 1 shown in FIG. 2 and a stay 2 shown in FIG. 3.
The resin housing 1 has a shallow box shape with a substantially rectangular opening 11 on the front surface, and a mirror 3 having a tapered cross section is fitted and held in a groove 12 formed at the inner periphery of the opening 11. Further, in the upper center of this housing 1, there is a through hole 13 through which the stay 2 passes.
The housing 1 has a through hole 13b in the center of the lower surface thereof through which an operating knob 5, which will be described later, passes. The stay 2 is substantially rod-shaped, and has a ball 21 forming a ball joint at its tip, and is slightly bent in this vicinity. The other end of the stay 2 has a base 22 for fixing to the ceiling of the vehicle. A hole 23 is formed in the base 22 for screwing the mirror onto the vehicle. Near the center of the interior of the housing 1 are reinforcement and bracket guide ribs 14 that extend in the vertical direction of the housing 1 and are parallel to each other.
15 has been launched. Also, these ribs 14, 15
Short protrusions 16 and 17 are formed inside the housing 1, respectively, and extend vertically from the inner surface of the housing 1. The protrusions 16 and 17 are each formed in two strips, parallel to each other, and engage a bracket to be described later with a bearing. Further, short projections 18 and 19 protrude in the vertical direction from the inner surface of the lower part of the housing, and are engaged with an operating knob to be described later with a bearing. These reinforcing ribs 14, 15 and protrusions 16, 17, 18, 19
are formed integrally with the housing 1 by resin molding or the like.

A bracket 4 is installed between the reinforcing ribs 14 and 15.
and an operation knob 5 are located there. The bracket 4 consists of a bracket main body 41 shown in FIG. 5 and a bracket plate 42 made of spring material shown in FIG.
The bracket plate 42 fixed to the main body 41 at points a and 42a cooperates to hold the ball 21 of the stay 2, thereby holding the mirror at an optimal position. The bracket main body 41 has a rectangular plate shape with a substantially uniform thickness, and a concave spherical surface 43 for receiving the ball 21 of the stay 2 is formed near one side of the central portion thereof. This concave spherical portion 43 is connected to the bracket body 4.
It stands out from the average thickness of 1. A screw hole 44 into which a nut is inserted is formed on both sides of the concave spherical surface portion 43 of the bracket body 41, and the bracket body 41 and the bracket The plates 42 are screwed together. The bracket plate 42 also has a concave spherical surface 46 near the center. Further, in the vicinity of the housing swing engagement portion of this bracket body 41, that is, on the outside of the screw holes 44 on both sides of the concave spherical surface portion 43, there is a screw hole 44 on both sides of the concave spherical surface portion 43. Short protruding portions 47 and 48 are raised up. The protruding portions 47 and 48 are rib-shaped and have a reduced thickness to reduce weight. Further, shoulder portions 41a and 41b on both sides of the bracket body 41 are curved and chamfered within their thickness, and are engaged with bearings 16 and 17 of the housing. At the center of the lower end of the bracket body 41,
A protrusion 49 having a width smaller than the width of the bracket body 41 is formed. At the lower end of this protrusion 49,
A groove 49a extending in the width direction is formed. The concave spherical surface portion 43, screw hole 44, protruding portions 47, 48, protrusion 49, etc. as described above can all be integrally formed by molding.

An operation knob 5 as shown in FIG. 7 is pivotally engaged with the housing 1 on the lower side of the bracket 4 as described above through a spring 6. The operating knob 5 includes an engaging portion 51 that extends in the width direction and comes into contact with the housing 1, and a knob portion 53 that projects from the center of the engaging portion 51 to the outside of the housing. A longitudinal groove 52 is formed in the thickness of the engaging portion 51, and the spring 6 is disposed in this groove 52. Furthermore, the engaging portion 51 is interrupted at a central portion corresponding to the knob portion 53, and a recess 54 is formed on the knob portion 53 side of this interrupted portion. The protruding portion 49 of the bracket body 41 is engaged with the central portion of the receiving spring at this interrupted portion.

Next, the relationships among the main components will be explained.
First, the spring 6 is inserted into the operating knob 5, the operating knob 5 is inserted into the lower hole 13b of the housing and engaged with the protrusions 18, 19, and then the spring 6 is inserted into the operating knob 5.
is engaged with the lower part of the bracket 49a, and the bracket body 41 is positioned between the reinforcing ribs 14 and 15 of the housing 1, but at this time, the shoulders 41a and 41b of the bracket body 41 are engaged with the protrusions 16 and 17 of the housing 1, respectively. Make sure they touch each other. Furthermore, the upper part 41a of the bracket is pushed into the projections 16 and 17. As a result, the bracket 4 and the operating knob 5 constitute a toggle mechanism. In this state, the bracket plate 42 is screwed to the bracket body 41 while holding the ball 21 of the stay 2 on the concave spherical surface 43 of the bracket body 41, as shown in FIG. As a result, the ball 21 of the stay 2 is held between the concave spherical surfaces 43 and 46 of the bracket body 41 and the bracket plate 42, and the bracket 4 and the stay 2 form a ball joint.

When the components are combined as described above, the protruding portions 47 and 48 of the bracket main body 41 extend toward the thick portion of the tapered mirror 3 and behind the mirror. At this time, this protruding portion 4
There should be a slight gap between 7 and 48 and the mirror 3. Since these protruding parts 47 and 48 extend from the bracket main body 41 toward the mirror 3, when the housing 1 is bent with respect to the bracket, these protruding parts 47 and 48 come into contact with the back surface of the mirror 3, and the mirror Since the housing 3 acts as one structure, it is possible to prevent the housing 1 from being bent any further. Since this position is located near the swing engagement portion of the mirror, the above-mentioned effect can be effectively exerted. Therefore, it is possible to prevent the bracket from coming off from the housing due to excessive bending of the housing, and thereby preventing the mirror from falling off and being damaged.

(Effects of the invention) According to this invention, by forming the protruding part that extends toward the mirror on the bracket body as described above, it is possible to easily prevent the bracket from coming off from the housing and eventually falling off the mirror. It is possible to obtain a highly reliable vehicle anti-glare mirror that can prevent glare.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of an anti-glare mirror for a vehicle according to an embodiment of this invention, Fig. 2 is a plan view of a housing which is a main part of an anti-glare mirror for a vehicle according to an embodiment of this invention, and Fig. 3 is an explanatory diagram of an anti-glare mirror for a vehicle according to an embodiment of this invention. FIG. 4 is a plan view of the stay, which is another important part of the anti-glare mirror for a vehicle according to an embodiment of this invention, and FIG. 5 is a partially cutaway front view of the anti-glare mirror for a vehicle according to an embodiment of this invention. indicates the bracket body,
a is a front view of this, b is a side view of the same, FIG. 6 is a bracket plate, a is a front view, b is a side view, and FIG. 7 is an operating knob, a is a front view, and b is a side view. , FIG. 8 is a sectional view taken along the line A-A in FIG. 4 of the anti-glare mirror for a vehicle according to an embodiment of this invention,
The figure is an explanatory diagram showing the disadvantages of the conventional device. In the drawings, 1 is a housing, 2 is a stay,
3 is the mirror, 4 is the bracket, 5 is the operation knob, 6
is a spring, 14 and 15 are reinforcing ribs, 16 and 1
7 is a projection, 21 is a ball, 41 is a bracket body, 42 is a bracket plate, 43 is a first concave spherical surface, 46 is a second concave spherical surface, and 47 and 48 are protruding portions.

Claims (1)

[Scope of utility model registration request] A shallow box-shaped resin housing having a front opening, a mirror with a tapered cross section supported by the inner edge of the opening of the housing, and a base having a bracket engagement part at one end and fixed to a vehicle at the other end. a bracket having an attachment portion for the bracket engaging portion of the stay, the bracket being disposed within the housing and swingingly supporting the housing; and a bracket pivotally engaged with the bracket within the housing. In the anti-glare mirror for a vehicle, the anti-glare mirror for a vehicle is provided with an operation knob that constitutes a toggle mechanism and protrudes from the bracket to the outside of the housing and can change the support angle of the mirror with respect to the stay, in the vicinity of the housing swing engagement part of the bracket, An anti-glare mirror for a vehicle, characterized in that a protruding portion is formed that protrudes toward the mirror and comes into contact with the rear surface of the mirror when the housing is bent.