JPS6326986Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an outside mirror for automobiles.
In particular, the present invention relates to an outside mirror for an automobile in which the mounting angle of the mirror can be adjusted using a drive motor.

This type of outside mirror is attached to the fender or door of a car, and is configured so that the angle of the mirror can be adjusted by remote control from the driver's seat. In order to prevent the mirror from vibrating due to wind pressure and the like, various structures are provided to reduce the vibration of the mirror.

For example, in the conventional outside mirror shown in FIGS. 1 and 2, a mirror attachment part b is fixed to a fixed housing a, a mirror back plate c is rotatably attached to the attachment part b, and the mirror back plate c A vibration damping member e is attached to the periphery of the mirror d so as to be elastically biased only in a direction perpendicular to the direction of movement of the mirror d and to be in constant sliding contact with the inner wall surface of the fixed housing a. In this outside mirror, the vibration damping member e slides into contact with the inner wall surface of the fixed housing a during rotation of the mirror back plate c, thereby damping the vibration of the mirror d.

By the way, in the conventional outside mirror shown above, when the mirror d moves, the fixed housing a
The load on the vibration damping member e changes. That is, the load on the vibration damping member e becomes smaller when the mirror back plate c moves into the fixed housing a, and becomes larger when the mirror back plate c moves toward the opening side of the fixed housing a. This change in load affects the drive unit that moves the mirror back plate c, causing the problem that the torque of the drive unit becomes unstable.

In view of the above problems, the present invention has been developed so that moving the mirror does not adversely affect the drive unit, and even if there is some dimensional error between the mirror body and the vibration damping member, the mirror can be moved. An object of the present invention is to provide an outside mirror for an automobile that can reliably damp vibrations.

Embodiments of the outside mirror for automobiles of the present invention will be described below with reference to FIGS. 3 to 6.

In the figure, reference numeral 1 denotes a mirror, and 2 denotes a mirror body made of synthetic resin or the like, and the mirror 1 is fitted and fixed to a peripheral edge 3 fixed around the front surface of the mirror body 2. Reference numeral 4 denotes a housing made of synthetic resin or the like, and is formed into a box shape with an open front side. This housing 4 has a mounting member 5 fixed therein by bolts 5a, and the mirror body 2 is mounted to a motor housing 7 attached to the mounting member 5 via a universal joint 8 so as to be tiltable. As shown in FIGS. 4 and 5, the universal joint 8 includes a hemispherical seat 81 formed at the front of the motor housing 7, a hemispherical portion 82 formed at the back of the mirror body 2, and the hemispherical portion 82 formed at the back of the mirror body 2. Part 8
2 to the hemispherical seat 81 and the coil spring 83
a retaining member 84 which is pressed and held by the elastic force of the retaining member 84; and a retaining washer 8 in which the retaining member 84 is supported by a support protrusion 81a protruding from the bottom of the hemispherical seat 81.
5 and a bolt 86, the hemispherical portion 82 of the mirror body 2 is aligned with the central axis A- of the universal joint 8.
It is designed to be able to tilt around A'.
Therefore, the outer wall surface of the hemispherical portion 82 and the hemispherical seat 8
1, and the inner wall surface of the hemispherical portion 82 and the outer wall surface of the hemispherical portion 84a of the holding member 84 each have the same radius around the center position.

The motor housing 7 accommodates a drive shaft 71 and drive means such as a drive motor for driving the drive shaft, and the drive means includes a drive shaft passing through the motor housing 7, as shown in FIGS. 3 and 5. A spherical portion 72 is formed at the tip of each spherical portion 71, and each spherical portion 72 is fitted into a spherical seat 21 provided on the mirror body 2, so that the two drive shafts 71 move forward and backward independently. 2 is now working.

Therefore, the outside mirror for an automobile according to the present invention is equipped with a vibration damping mechanism for damping vibrations generated in the mirror 1. The vibration damping mechanism consists of a spherical wall 22, a coupling 9, a retainer 10 and a spring 11.

The outer wall of the spherical wall portion 22 forms a part of a sphere, and is formed on the back surface of the mirror body 2 at a radial position centered on the central axis A-A' of the universal joint 8 so as to face the housing 4. For example, four protrusions are provided on the circumference of the mirror body 2. The coupling ring 9 is fitted onto and fixed to a liner 12 attached to the central axis A-A' of the mounting member 5 by bolts 13 and washers 14. This coupling ring 9 is in the form of a disc with a fitting hole 9a for the liner 12 provided in its center. The retainer 10 is formed into a disk shape from synthetic resin, and has a hole 10a in its center that is slightly larger than the diameter of the coupling ring 9, and the coupling ring 9 is inserted through the hole 10a. The retainer 10 also has an abutting wall portion 10b that abuts against the spherical wall portion 22 at its periphery. A part of the inner surface of the contact wall portion 10b is formed to have approximately the same radius as the outer surface of the spherical wall portion 22, and can suppress vibrations generated in the mirror body 2 due to contact with the spherical wall portion 22. It's becoming like that. As clearly shown in FIGS. 5 and 6, a protrusion 10c is formed on the edge of the hole 10a of the retainer 10 so as to face each other, and a notch is formed on the circumferential side of the coupling ring 9 to fit with the protrusion 10c. 9
b is formed along the central axis, and a gap h is provided between the protrusion 10c and the notch 9b when the notch 9b and the protrusion 10c are in a fitted state. This gap h is between the retainer 1 and the coupling 9.
0 can be shifted in a direction orthogonal to the central axis A-A' direction.

The spring 11 is fixed to a liner 12 screwed to the mounting member 5. This spring 11 includes a main body 11a having a bolt insertion hole 11b in the center, and a sliding wall portion 10b that is in sliding contact with the main body 11a.
The press contact portion 11c is configured to press the retainer 10 against the spherical wall portion 22 when the main body 11a is fixed to the liner 12. Note that 5a is a mounting member 5 for passing the collision wall portion 10b.
This is a hole made in the hole.

Since the outside mirror for an automobile of the present invention has the above-described configuration, vibrations occurring in the mirror 1 can be reliably damped by the vibration damping mechanism. That is, since the abutment wall 10b of the retainer 10 abuts against the spherical wall 22 of the mirror body 2, and the abutment wall 10b is pressed against the spherical wall 22 by the elastic force of the spring 11, the mirror The body 2 can be held down, and vibrations occurring in the mirror 1 can be reliably reduced. Furthermore, since the spring 11 always presses the contact wall portion 10b against the spherical wall portion 22 with a constant pressure regardless of the tilting movement of the mirror 1, there is no risk of excessive load being applied to the drive motor etc., and there is no adverse effect on the drive unit. I have nothing to give.

Further, although the spherical wall portion 22 of the vibration damping mechanism and the retainer 10 are provided on the central axis, these parts are likely to be dimensionally distorted due to temperature changes during molding. However, in the present invention, when the protrusion 10c of the retainer 10 and the notch 9b of the coupling 9 are fitted together, a gap h is provided between the protrusion 10c and the groove 9b. By shifting the position of the retainer 10, the contact wall 10b and the spherical wall 2
2 can be positioned relatively and accurately. Therefore, even if a dimensional error occurs, assembly can be performed reliably without being affected by this error.

As described above, according to the present invention, it is possible to reliably attenuate vibrations occurring in the mirror, and there is no adverse effect on the drive unit regardless of the tilting of the mirror, and there is no need to worry about temperature changes during molding. Therefore, even if a dimensional error occurs, there is an advantage that assembly can be performed reliably without being affected by the error.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view showing an example of the configuration of a conventional outside mirror for an automobile, Fig. 2 is a sectional view showing a tilting state of the mirror, and Fig. 3 is an embodiment of an outside mirror for an automobile according to the present invention. FIG. 4 is a sectional view of the main parts, FIG. 5 is an exploded perspective view of the main parts, and FIG. 6 is an enlarged view showing how the coupling and retainer are attached. 1...Mirror, 2...Mirror body, 4...Housing, 8...Universal joint, 9...Cup ring, 9b...Notch, 10...Retainer, 10b
...Contact wall portion, 10c...Protrusion, 11...Spring, 22...Spherical wall portion of mirror body 2, h...
...Gap.

Claims (1)

[Scope of utility model registration request] A mirror, a mirror body to which the mirror is fixed,
The housing includes a housing in which a mirror body is tiltably mounted via a universal joint, a driving means for operating the mirror body, and a vibration damping mechanism, the vibration damping mechanism being centered on the central axis of the universal joint on the rear surface of the mirror body. a retainer having a spherical wall formed at a radial position, a coupling fixed on the central axis of the universal joint of the housing, an abutment wall through which the coupling is inserted and abutting against the spherical wall; a spring for attaching the retainer to press the retainer against the spherical wall; a notch is formed in the circumferential side of the coupling; a protrusion is formed on the retainer that fits into the notch; and the protrusion and the notch fit together. In this state, a gap is provided between the protrusion and the notch in a direction perpendicular to the central axis of the universal joint, the protrusion and the notch are fitted together, and the retainer is displaced relative to the coupling ring in the direction perpendicular to the central axis. An outside mirror for an automobile, characterized in that an abutting wall portion of a retainer can be positioned on a spherical wall portion.