JPH035151Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a shock-absorbing door mirror for automobiles.

[Prior art]

Since door mirrors are installed protruding from the sides of the vehicle, there is a chance of collision with external obstacles, and there is also the problem that they get in the way when passing through narrow spaces with obstacles.

To solve these problems, buffer-type door mirrors are widely used.

FIG. 3 is a horizontal sectional view showing an example of a conventional shock-absorbing door mirror, and in this figure, the upper side corresponds to the front of the vehicle body.

A reinforcement 2 made of sheet metal is fixed to a mirror housing 1. 1a and 1b are stays for attaching the reinforcement, and 1c is a mounting screw.

FIG. 4 shows a single-piece view of the above-mentioned reinforcement 2 viewed in the direction of the arrow. M shown by the phase line is the main body of the reinforcement 2, and this main body M has relatively high rigidity.

Four tongue pieces 2a, 2b, 2c, 2d protrude from the above-mentioned main body part M with high rigidity, and one tongue piece 2
is being cut up. Among the five tongue pieces mentioned above, the tongue pieces 2c, 2d, and 2e are for attaching the reinforcement 2 to the mirror housing.
Reference characters a and 2b are for attaching the reinforcement 2 to the mirror bracket 3.

Arms 3a and 3b for attaching reinforcements are integrally protruded from the mirror bracket 3, and are opposed to and in contact with the tongues 2a and 2b, respectively, and are tightly connected by attachment screws 3c.
3d and 3e are mounting screw holes, and the tongue pieces 2a and 3e are respectively attached.
It is pierced by 2a.

On the other hand, 4 shown in FIG. 3 is a mirror base, which is used while being fixed to the vehicle body (not shown). The mirror base 4 rotatably supports a hinge bracket 6 via a rear hinge pin 5, and the hinge bracket 6 rotatably supports the mirror bracket 3 via a front hinge pin 7. ing.

With the above-described structure, the mirror housing 1 is integrally connected to the reinforcement 2 and the mirror bracket 3. The mirror base 4 rotatably supports the mirror housing 1 via a hinge bracket 6.

The mirror housing 1 is urged toward and abuts against the mirror base 4 by the tension spring 8, and is held in the normal position shown in FIG. 1 (the position functioning as a door mirror).

When a rearward (downward in the figure) external force acts on the mirror housing 1, the mirror housing 1, together with the hinge bracket 6, tilts counterclockwise around the rear hinge pin 5 to perform a buffering function. Further, the tilted position described above is convenient because the door mirror does not get in the way when passing near an obstacle.

When a forward (upward in the figure) external force acts on the mirror housing 1, the mirror housing 1, together with the mirror bracket 3, tilts clockwise around the front hinge pin 7 to perform a buffering function.

9 is a mirror body to which the mirror main body 10 is fixed. Reference numeral 11 denotes a ball joint that rotatably supports the mirror body 9 on the mirror housing 1 (more specifically, via the reinforcement 2).

A manual operating lever and a transmission link 13 are provided in order to arbitrarily rotate the mirror body 9 around the ball joint 11.

There is also a known example in which a drive unit (not shown) for electric motor control is provided in place of the manual operation lever 12 described above.

[Problem that the invention attempts to solve]

In the conventional shock-absorbing door mirror configured as described above, the main body M of the reinforcement 2 shown in FIG. , 2b have low rigidity and elasticity.

Therefore, reinforcement 2 and mirror bracket 3
The connection is made through tongue pieces 2a and 2b, which are elastic members, and does not have sufficient rigidity. For this reason, when a car is driven at high speed and receives wind pressure and vibration, the mirror body 9
And resonance vibration (so-called chatter) is generated in the mirror body 10.

In order to prevent the above-mentioned chatter, the above-mentioned tongue piece 2
If measures such as providing ribs are taken to increase the rigidity of the mirror body 10, problems such as a restriction on the rotation angle of the mirror body 10 (the rotation angle around the ball joint 11) will occur. Furthermore, in the case of the above-mentioned electric remote control type, it is difficult to install and store the drive unit. Furthermore, if the reinforcement is die-cast to increase its rigidity, the entire device will be large, heavy, and expensive.

This idea was created in view of the above circumstances.
This will inevitably affect the rotation performance of the mirror body.
Furthermore, the present invention aims to provide a buffer type door mirror using a sheet metal reinforcement that does not cause chatter in the mirror body.

(Means for Solving the Problems) In order to achieve the above object, the door mirror of the present invention is attached to the mirror housing and attached to the reinforcement, while the mirror body is attached to the mirror base via a hinge bracket. In the buffer type door mirror, the mirror bracket is rotatably supported, the reinforcement is fixed to the mirror bracket with a mounting screw, and a tension spring is interposed and engaged between the mirror housing and the mirror base. , a mounting arm is made to protrude from the mirror bracket and is integrally connected, the tip of the mounting arm is overlapped with the main body of the reinforcement, and the mounting screw is inserted into the mounting screw hole drilled in the main body of the reinforcement. It is characterized by being screwed into the mounting arm and tightened.

[Effect]

With the configuration described above, the mounting arm of the mirror bracket directly contacts the main body portion (high rigidity portion) of the reinforcement and is fixed to each other, so there is no possibility of chatter occurring.

[Example of idea]

1 and 2 show one embodiment of the present invention.
This embodiment is an example in which the present invention is applied and improved to the above-mentioned known buffer type door mirror.

FIG. 1 in this embodiment is a plan view of the reinforcement corresponding to FIG. 4 in the known example,
FIG. 2 in this embodiment is a horizontal sectional view corresponding to FIG. 3 in the known example.

In this example (Figs. 1 and 2), the third
The same drawing reference numerals as in FIGS.

Next, the differences between this embodiment and the known example will be explained.

Compared to the mounting arms 3a, 3b of the mirror bracket 3 in the known example, the mounting arms 3a', 3b' in this embodiment are configured in a shape extending toward the main body part M of the reinforcement. 3
Overlap the tip of b' with the main body M, and insert the hole 3g for the mounting screw into the reinforcement 2' in the overlapped part.
3f and fasten both members (reinforcement 2' and mounting arms 3a', 3b' of mirror bracket 3) with mounting screws 3c.

As is clear from the above-described structure, the reinforcement 2' of this embodiment does not have any special reinforcement on its tongues 2a, 2b, so the rotation of the mirror body 9 is not hindered by the reinforcing member. There is no possibility of interfering with the installation or storage of drive equipment.

Moreover, the mounting arm 3 of the mirror bracket 3'
Since a' and 3b' are fastened in direct contact with the main body M (the part with the greatest rigidity) of the reinforcement 2', the rigidity of the assembly is large and there is no chance of chatter vibrations occurring. In addition, the reinforcement 2′ of the present invention
Since it is made of sheet metal, it is lighter, smaller, and smaller than when using a die-cast reinforcement (not shown).
It can be constructed at low cost.

[Effect of idea]

As detailed above, the shock-absorbing door mirror of the present invention uses a lightweight and inexpensive sheet metal reinforcement, and has an excellent feature that does not interfere with the rotating function of the mirror body and does not cause chatter vibration. It has practical effects.

[Brief explanation of drawings]

1 and 2 show one embodiment of the shock-absorbing door mirror of the present invention, with FIG. 1 being an explanatory view of how the reinforcement and mirror bracket are attached, and FIG. 2 being a horizontal sectional view. 3 and 4 show an example of a known buffer type door mirror, with FIG. 3 being a horizontal sectional view and FIG. 4 being a plan view of the reinforcement viewed in the direction of the arrow. 1... Mirror housing, 2, 2'... Reinforcement hose, 2a to 2e... Tongue piece, 3, 3'... Mirror bracket, 3a, 3a', 3b, 3b'... Mounting arm, 4
...Mirror base, 6...Hinge bracket, 9...Mirror body, 10...Mirror body.

Claims (1)

[Scope of utility model registration request] Fix a sheet metal reinforcement hose to the mirror housing and attach the mirror body to the reinforcement hose.
On the other hand, the mirror bracket is rotatably supported on the mirror base via a hinge bracket, the reinforcement is fixed to the mirror bracket with a mounting screw, and a tension is provided between the mirror housing and the mirror base. In a buffer type door mirror in which a spring is interposed and engaged, a mounting arm is made to protrude from the mirror bracket and are integrally connected, the tip of the mounting arm is overlapped with the main body of the reinforcement, and the end of the mounting arm is overlapped with the main body of the reinforcement. A buffer type door mirror characterized in that a mounting screw inserted into a drilled mounting screw hole is screwed into the mounting arm and tightened.