JPS6224592Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mirror holding device in a vehicle mirror assembly such as a rear view mirror.

In a vehicle mirror assembly, it is necessary to arbitrarily set the direction of the mirror surface to obtain good visibility, and the mirror is generally held by a joint member that press-fits a pivot ball into a pivot receiver. There is. 1 and 2 show conventional examples of such a holding device. 1 is a mirror, 2 is a mirror holder to which the mirror 1 is attached, and the mirror holder 2 is supported by a plurality of arms 3. A pivot ball 4 is provided. Reference numeral 5 denotes a pivot receiving base, on which a pivot receiving base 7 consisting of a plurality of elastic pieces 6 is provided. The inner wall surface 6a of the elastic piece 6 has a spherical surface corresponding to the pivot ball 4. By press-fitting the pivot ball 4 into this part and holding the pivot ball 4 in a movable state, the mirror 1 can be moved within a certain range. It is held in such a way that it can be tilted freely. The pivot receiving base 5 is generally made of a synthetic resin molded product such as polyacetal resin, which has high strength and high elasticity, and is attached to the main body case of the mirror assembly.

The conventional mirror holding device has such a structure, and since the pivot ball 4 is only held by the holding force of the pivot receiver 7, it can be detached again if a load exceeding a certain limit is applied.
Therefore, the mirror may come off due to vibrations or tampering during use, or due to force when attempting to tilt the mirror beyond its possible tilting range. In addition, if the holding force of the pivot receiver 7 is strengthened in order to prevent this, the workability of assembly will deteriorate and the mirror holder 2 may be damaged during assembly, so there is a limit to how strong the holding force can be increased. However, there was a problem in that it was not possible to take reliable measures to prevent the mirror from coming off.

The present invention solves these problems and provides a mirror holding device that has a relatively simple structure, has good workability during assembly, and can reliably prevent the pivot ball from coming off. This was designed to prevent the pivot receiver from being deformed in a state where the pivot ball is assembled so that the pivot ball can be removed, and a lock pin is provided to prevent the pivot ball from coming off. In other words, the reason why the pivot ball detaches from the pivot receiver is because the pivot receiver is deformed when a load is applied to the pivot ball in the direction of detachment, and by providing a lock pin to prevent this deformation, the pivot ball can be detached from the pivot receiver. This prevents deformation of the receiver and prevents the pivot ball from coming off.

Next, examples will be described in which the present invention is applied to two types of joint members having different structures. First, in FIGS. 3 and 4, the pivot receiver 7 is composed of a plurality of elastic pieces 6, similar to those shown in FIGS. 1 and 2, and the pivot ball 4 is press-fitted therein. This is an example of a type in which the pivot ball 4 is held together. In this embodiment, a lock pin 1 is inserted into the inner surface of a cylindrical arm support portion 11 formed in a mirror holder 2.
2, the lock pin 12 is inserted between the inner wall surface of the arm support part 11 and the edge of the pivot ball insertion side of the pivot receiver 7, that is, the outer wall 6b of the edge of the elastic piece 6, and the lock pin 12 is inserted toward the outside of the elastic piece 6. It is designed to prevent bending. The lock pin 12 is U-shaped, and the guide 13 provided on the mirror holder 2
It is supported by the hole 14 and inserted along the surface of the mirror holder 2, and when it is inserted to the assembly position, the tip 12a comes into contact with the outer wall 6b of the pivot receiver 7, but it is pushed by the spherical outer wall 6b. In order to prevent the tip 12a from escaping upward, the arm support 11 is
A guide 15 is also provided inside. Notches 16 and 17 are formed on the side surfaces of the lock pin 12, and these notches 16 and 17 fit into the protrusions 13a formed inside the guide 13 at the temporary assembly position and the assembly position, respectively, thereby controlling the positioning of the lock pin 12. play a role. That is, in the temporarily assembled position, the notch 16 fits into the protrusion 13a and the tip 12a of the lock pin 12 does not enter the inside of the arm support part 11.
In this state, the pivot ball 4 is press-fitted into the pivot receiver 7. After press-fitting, when the lock pin 12 is pushed to the assembly position and the notch 17 is fitted into the protrusion 13a, the tip 12a comes into contact with the outer wall 6b of the pivot receiver 7, preventing the elastic piece 6 from deflecting outward, and locking it. As a result, the pivot ball 4 cannot be released.

5 to 8 show examples of joint members having a structure in which a part of the pivot receiver is a hinge piece that can be opened and closed, and after the pivot ball is assembled, the hinge piece is closed to hold the pivot ball. The receiver 7 is made of a material capable of forming a resin hinge, such as polypropylene resin, and is molded into the shape shown in FIGS. 6a and 6b. That is, the pivot receiver 7 is constituted by a substantially U-shaped main body part 7a and a hinge piece 7b connected thereto via a hinge part 20, and a spherical inner part formed by the main body part 7a and the hinge piece 7b. The pivot ball 4 is held by the wall surface 7c, and in order to eliminate displacement of the hinge piece 7b and maintain the correct spherical shape of the inner wall surface 7c, a protrusion 7d is provided inside the tip of the hinge piece 7b, and a corresponding main body portion 7a is provided. A notch 7e is provided on the inside of the hinge piece 7b, and a pair of locking claws 21 are provided on the outside of the tip of the hinge piece 7b and the corresponding outside of the main body portion 7a. The mirror holder 2 has a recess 22 for attaching the pivot receiver 7,
An L-shaped holding piece 23 and guides 24, 25 are provided on both sides of this recess 22, and the U-shaped locking pin 12 is inserted through the guide 24, holding piece 23, and guide 25 from the side and temporarily assembled. be done. FIG. 7 is a sectional view of this state, and the lock pin 12 is made of a flexible material to enable the pivot receiver 7 to be press-fitted, and the lock pin 12 is pushed out between it and the holding piece 23. A gap 26 of just 100 mm is provided. On the other hand, the pivot ball 4 is supported by two arms 3 on a pivot ball base 5a as shown in FIGS. 8a and 8b.

The pivot ball 4 is assembled as follows. First, the pivot ball 4 is fitted into the main body part 7a of the pivot receiver 7, and the hinge piece 7b is closed as shown by the broken line in FIG. The lock pin 12 is pushed into the recess 22 while being pushed apart, and the locking pawl 21 is locked with the lock pin 12 that has returned to its original position. In this way, the pivot receiver 7 is held against the outer wall 7f of the hinge piece 7b by the lock pin 12, and the pivot ball 4 is held by the pivot receiver 7 in a freely tiltable and non-separable manner, and the mirror holder 2 and the pivot ball base 5
This will ensure that a is combined with a.

FIG. 9 shows a modification of the second embodiment described above, in which the pivot ball 4 is supported by one support leg 3a. In this third embodiment, the pivot receiver 7 is formed with an opening 27 on the support leg 3a side and a hinge portion (not shown) on the side surface, corresponding to the support structure of the pivot ball 4.
Other than that, the structure is similar to that of the second embodiment. After assembly, the locking pawl 21 locks onto the lock pin 12 to prevent the pivot receiver 7 from opening, and the pivot ball 4 is held in the pivot receiver 7 so as to be tiltable but not detachable.

Note that in the second and third embodiments, the positions of the pivot ball 4 and the pivot receiver 7 are reversed from those in the first embodiment, and the pivot receiver 7 is attached to the mirror holder 2. In this way, the pivot ball 4 and the pivot receiver 7 may be provided on either side. Further, in any of the embodiments, the lock pin 12 is removable, and when a damaged mirror is to be replaced, the pivot ball 4 and the pivot receiver 7 can be easily disconnected from each other by pulling out the lock pin 12. Although the lock pin 12 has a square cross section and is made of a molded product such as synthetic resin, it is also possible to use a metal wire with a circular cross section, and its shape can also be used for insertion and withdrawal. As long as it can be easily formed, other shapes such as a forked tip can be used.

As is clear from the description of the embodiments above, the present invention provides a lock pin to prevent deformation of the pivot receiver that would allow the pivot ball to come off, and is easy to assemble. In addition, it will surely prevent the mirror from coming off due to vibration etc. after assembly, and even if someone who does not know the structure tries to remove it due to mischief, etc. A mirror holding device that can be easily removed and has excellent maintainability can be obtained at low cost with a simple structure.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the conventional example, Fig. 2 is an exploded perspective view of the same as above, Fig. 3 is an exploded perspective view of an embodiment of the present invention, and Fig. 4a is a plan view of the mirror holder as above. , FIG. 4b is a sectional view taken along line A-A in FIG. 4a in the assembled state, and FIG. 4c is a cross-sectional view taken along line A-A in FIG. 4a.
5 is a partially cutaway perspective view of another embodiment; FIGS. 6a and 6b are a front view and a side sectional view of the same pivot receiver; Figure 7 is a sectional view of the main parts of the same as above, Figure 8a
8b is a front view and a side view of the same pivot ball as above, and FIG. 9 is a side sectional view of still another embodiment. 1...Mirror, 2...Mirror holder, 3...Arm, 3a...Support leg, 4...Pivot ball, 5...
...Pivot receiver base, 5a...Pivot ball base, 6...Elastic piece, 6b...Outer wall, 7...Pivot receiver, 7b...Hinge piece, 7f...Outer wall, 12
...Lock pin.

Claims (1)

[Claims for Utility Model Registration] (1) A mirror holding device in which a mirror is held tiltably by a joint member consisting of a pivot ball and a pivot receiver, wherein the joint member is held by a plurality of elastic pieces. The structure holds the pivot ball by press-fitting the pivot ball into the pivot receiver, and the lock pin is brought into contact with the outer wall of the pivot ball insertion side edge of the pivot receiver to prevent the elastic piece from deflecting outward. In this way, the lock pin prevents the pivot receiver from being deformed in a manner that would allow the pivot ball to come off. (2) A part of the pivot receiver is made into a hinge piece that can be opened and closed, and after the pivot ball is assembled, the hinge piece is closed to hold the pivot ball, and the lock pin is brought into contact with the outer wall of the hinge piece of the pivot receiver. The mirror holding device according to claim 1, wherein the hinge pieces are brought into contact with each other to prevent the hinge pieces from opening outward.