JPS6326266Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vibration damping device used to prevent vibrations of large outside mirrors of trucks and the like.

As shown in FIG. 1, in a conventional outside mirror, a mirror drive part b is fixed to a mirror housing a, and a mirror body c can be tilted onto the mirror drive part b via a first universal joint f. installed on,
By transmitting the power from the drive part b to the mirror body c via the second universal joint g,
I'm trying to tilt it. Also mirror body c
A vibration damping spring member e is disposed on the periphery of the mirror d and is elastically biased only in a direction perpendicular to the direction of movement of the mirror d, and is always in sliding contact with the inner wall surface of the mirror housing a.
is installed. This vibration damping spring member e slides into contact with the inner wall surface of the fixed mirror housing a, thereby damping the vibration of the mirror d.

In such a conventional outside mirror, when the mirror d moves as shown in FIG. 2, the load of the vibration spring member e on the mirror housing a changes.

That is, as shown in FIG. 2, the load on the vibration damping spring member e decreases as the mirror body c moves toward the inside of the mirror housing a, and increases as the mirror body c moves toward the opening of the mirror housing a.

This change in load affects the mirror drive section b that moves the mirror body c, causing a problem that the operating torque of the mirror drive section b becomes unstable.

The present invention improves the conventional outside mirror as described above, and provides a vibration damping device that does not adversely affect the mirror drive unit even when the mirror is tilted, and can reliably damp the vibration of the mirror. This is what I am trying to do.

In order to achieve the above-mentioned object, the present invention aims to provide a second universal joint located on a radius around the center position of the first universal joint provided in the mirror body, and a position opposite to the second universal joint on the horizontal line or vertical line. A third universal joint is attached to the mirror body, and the third universal joint is composed of a spherical part that fits into a spherical seat on the back of the mirror body, and a rod part that has a neck part that can follow the tilting direction of the mirror body. , the rod part is inserted into a rod support mounted on the fixing member of the mirror housing, and a spring material is attached to the support body to press the rod part, and when the spring material presses the rod part, This is designed to dampen the vibrations of the mirror.

Next, an embodiment in which the present invention is applied to an electrically-operated remote control mirror will be described with reference to Figs.

Fig. 3 is a sectional view showing the configuration of an electric remote control mirror to which the present invention is applied, Fig. 4 is a front view thereof, Fig. 5 is a sectional view taken along the Y-Y line in Fig. 3, and Fig. 6 is a sectional view showing the configuration of an electric remote control mirror to which the present invention is applied. FIG. 7 is a cross-sectional view showing how the third universal joint, which is a vibration damping device, follows the tilting movement of the mirror body. FIG. 7 is a partial perspective view of the neck portion.

In Figures 3 and 4, 1 is a mirror, 2
is a mirror body made of synthetic resin or the like, and a mirror 1 is fixed to the front peripheral edge 3 of the mirror body. 4
is a mirror housing made of synthetic resin,
It is formed into a box shape with an opening 5 provided on its front surface. The mirror housing 4 is provided with a first universal joint 7 on a support 6 fixed therein, and the mirror body 2 is mounted so as to be tiltable by the universal joint 7. The first universal joint has a spherical part that fits into a spherical seat 8a provided on the back surface of the mirror body, and ears 9a and 9b are attached to the spherical seat 8a so that the mirror body 2 can be tilted with optimum torque. established,
The screw 10 and nut 11 adjust the tightening torque. The support body 6 consists of a casing housing a power transmission device such as a drive motor. The support body 6 and the mirror body 2 are connected via a second universal joint 12, and power is transmitted from the support body 6 to the mirror body 2 to tilt the mirror body 2. The second universal joint 12 has a horizontal position 12 and a vertical position 1 centered on the center position A of the first universal joint 7 in order to tilt the mirror body 2 vertically and horizontally.
One location each is provided at 2' and 2'.

In the present invention, a third vibration damping device is provided between the mirror body 2 and the mirror housing 4.
A universal joint 14 is provided.

As shown in FIG. 3, this third universal joint 14 has a support (cylinder) 15 made of synthetic resin.
The rod part 16 that moves up and down inside the rod part 1
and a spherical part 14 provided at one end of 6,
This is attached to the mirror housing 4, and the spherical part 14 on the rod part 16 is fitted and connected to a spherical seat on the back of the mirror body. This third universal joint 14 is provided at a relative position 14, 14' of the second universal joint 12, 12' provided on a horizontal line centered on the center A of the first universal joint, or on a vertical line. There is. Further, in this third universal joint 14, the rod portion 16 and the spherical portion 14 are connected by a flexible neck portion 17 as shown in FIG. For this reason, when the mirror 1 tilts about the first universal joint 7, the spherical portion 14 is configured to follow the arc locus of the mirror body 2 as shown in FIG.

As shown in FIG. 5, a spring member 18 is inserted into the support body (cylinder) 15 to press the rod 16, and the rod 16 is always pressed within the support body 15 by the elastic force of the spring member 18. There is.

As described above, the vibration damping device of the present invention has a structure in which the neck portion 17 can flexibly follow the circular arc locus of the mirror body 2 in the vertical or horizontal direction.
The pressing force of the spring member 18 that moves linearly within the rod portion 5 and presses against the rod portion 16 hardly changes.

In this way, the spring member 18 can press against the rod portion 16 with a constant load regardless of the tilting movement of the mirror body 2. Therefore, the torque of the drive motor that also tilts the mirror body 2 can be kept constant. Further, if the mirror body 2 tries to vibrate, the vibration can be suppressed by the pressing force of the spring member 18, so that the vibration of the mirror body 2 can be attenuated.

As mentioned above, the vibration damping device for the outside mirror of the present invention, when the mirror body is tilted,
A third universal joint is provided that can always follow the mirror body in a straight line and support the mirror body, and the rod of the universal joint is pressed into contact with the spring member within the support, so that the drive motor that tilts the mirror body is There is almost no torque fluctuation, and the vibration of the mirror body can be reliably damped by the spring material.

In this embodiment, the support 6 of the first universal joint 7 and the pedestal of the support 15 of the damping device are provided separately in the mirror housing;
It may be formed integrally on the support body 6 of the universal joint 7.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional vehicle mirror, and FIG. 2 is an explanatory diagram of its vibration damping device.
Fig. 3 is a sectional view showing the configuration of an electric remote control mirror to which the present invention is applied, Fig. 4 is a front view thereof, Fig. 5 is a sectional view taken along the Y-Y line in Fig. 3, and Fig. 6 is a sectional view showing the configuration of an electric remote control mirror to which the present invention is applied. FIG. 7 is a partial perspective view of the neck portion, which is a cross-sectional view of the neck portion showing changes in the ball joint of the vibration damping device following the tilting movement of the mirror body. 1...Mirror, 2...Mirror body, 3...Mirror body periphery, 4...Mirror housing, 6
... Support body, 7 ... First universal joint, 12 ... Second universal joint, 13 ... Drive shaft, 14, 14'...
...Third universal joint, 15... Support body, 16... Rod, 17... Neck portion, 18... Spring material.

Claims (1)

[Scope of utility model registration request] The mirror body is tiltably attached to the fixed member of the mirror housing via the first universal joint, and power is transmitted to the mirror body via the second universal joint, so that the mirror body connects to the first universal joint. In an outside mirror that is configured to tilt around the center, the relative position on the horizontal line or vertical line of the second universal joint located on a radius around the center position of the first universal joint provided on the mirror body A third universal joint is installed at a position where the third universal joint is made of a spherical part that fits into a spherical seat on the back of the mirror body, and a rod part that has a neck part that can follow the direction of tilting of the mirror body, The rod portion is inserted into a rod support body attached to a fixing member of the mirror housing, and a spring material is attached to the support body that presses the rod portion, and as the spring material presses the rod portion, A vibration damping device for an outside mirror, characterized in that the vibration of the mirror is damped.