JPH0116676Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a shock absorber for an automobile door mirror in which a mirror body is supported so as to be tiltable rearward or forward and backward.

Conventional Technology Some automobile door mirrors are designed to tilt forward and backward when an external force is applied from the front and back to reduce the impact caused by contact with a person, and automatically tilt when the external force is removed. The mirror body is designed to return to its original standing position. The structure for this purpose is to support the mirror body with respect to a mounting stay attached to the door so that it can tilt backwards or forwards with one hinge or both hinges as the center of rotation, and a tension spring is installed between the mirror body and the mounting stay. It is common that the mirror body is tensioned, and when the external force is removed by the tension of a tension spring, the mirror body returns to the upright position.

Problems that the invention aims to solve By the way, when transporting a car or entering a narrow space, it is desirable to keep the mirror body in a tilted position, but in the conventional example above, it is left in a tilted position. In order to make this possible, there were problems such as a complicated structure, high cost, and troublesome operation when returning to the standing position.

Means for Solving the Problems The present invention was made with the aim of solving these problems, and while one end of the connecting fitting curved in an approximately C-shape is rotatably attached to the mounting stay, When a tension member is suspended between the other end of the metal fitting and the mirror body in the upright position, and the mirror body is rotated around the mounting stay around the hinge against the repulsive force of the tension member, , the other end of the connecting fitting bypasses the hinge so that the line connecting it to the one end can be located closer to the mounting stay than the hinge, and the one end is connected to the tension member when the mirror body is in the upright position. closest to the support point,
A fulcrum guide is formed on the mounting stay so that the other end is close to the hinge that is the center of tilt of the mirror body and is inclined away from the mirror body, and a tension member is attached to the fixed support point of the mirror body and above the fulcrum guide along the fulcrum guide. is stretched between movable support points provided so that it can be moved, and when the mirror body is tilted beyond a certain angle, the movable support points move on the fulcrum guide toward the hinge side, and the tension member A door mirror for an automobile that can maintain the mirror body in a tilted state with a simple structure, characterized in that the line connecting both support points crosses the center of rotation of the hinge and moves toward the mounting stay. This provided a shock absorbing device.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the mirror body in an upright position, and FIG. 2 shows the mirror body in a tilted position.

In the figure, 1 is a box-shaped mirror body with a front opening, and 2 is a mounting stay that is attached to a door 3. The mirror holder 7 can be tilted freely within a certain range by fitting the pivot ball 8 of the mirror holder 7 into a pivot holder 6 provided inside the mirror body 1 via a mounting seat 4 and a support plate 5. A mirror 9 is fixed to this mirror holder 7. A hinge member 10 is provided at the bottom of the mirror body 1, so that the mirror body 1 can be tilted forward (upward in the figure) with the front hinge 10a as the rotation center, and the mirror can be tilted forward (upward in the figure) with the rear hinge 10b as the rotation center. The mirror body 1 is supported so that the body 1 can be tilted rearward (downward in the figure).

Mounting stay 2 has mounting screw 1 for door 3 on the back side.
A seat 17 and a guide plate 18 for the hinge member 10 are formed on the surface facing the mirror body 1 on the front side.
b is connected to the rear edge, and the guide plate 18 is provided with an elongated hole-shaped fulcrum guide 19.

Reference numeral 25 denotes a tension member consisting of a coiled tension spring 26 and a connecting fitting 27 curved in an approximately C-shape.
The tension member 25 is stretched between the mirror body 1 and the mounting stay 2 while maintaining a constant tension.

The fulcrum guide 19 has one end 19a closest to the fixed support point 28 when the mirror body 1 is in the upright position as shown in FIG. 1 and substantially surrounds the rear hinge 10b, and the movable support point 29 is provided so as to be movable on the fulcrum guide 19 along the fulcrum guide 19. Although the specific structure of the movable support point 29 is not shown, for example, a small roller may be inserted into a pin implanted in the connecting fitting 27, and this small roller may be configured to roll on the fulcrum guide 19. An appropriate structure can be adopted, such as.

This embodiment has the above-described structure, and when the mirror body 1 is in the upright position as shown in FIG.
9a side, the tension member 25 has the shortest length. Here, when an external force is applied to the mirror body 1 from the front and back directions, the mirror body 1 tilts around the hinge 10a or 10b as the center of rotation, and the tension spring 2
6 is stretched. And when the external force is removed,
The tension of the tension spring 26 restores the mirror body 1 to the position where the length of the tension member 25 is the shortest, that is, to the normal upright position.

Next, an external force is applied to the mirror body 1 to cause it to tilt significantly backward, that is, downward in the figure, and when the fixed support point 28 moves backward from the direction of the perpendicular line passing through the center of the elongated hole-shaped fulcrum guide 19, the movable support The point 29 is pulled by the tension member 25 and moves toward the end portion 19b, and finally both support points 28 and 29 of the tension member 25
The line connecting them (A-A line in Figure 2) is the rear hinge 10b.
move to the mounting stay 2 side across the center of rotation. That is, since the point of force of the tension member 25 is placed outside the center of rotation of the rear hinge 10b, a rearward rotational force is applied to the mirror body 1, resulting in the state shown in FIG. 2 in which the mirror body 1 remains tilted backward. . Note that in order to prevent the mirror body 1 from tilting more than necessary and hitting the door 3, an appropriate stopper structure may be provided on the hinge member 10 or the like.

Next, when the mirror body 1 is raised from this state, the point of force is again inside the rear hinge 10b, and a rotational force is applied to the mirror body 1 in the direction of the upright position, and this rotational force is applied to the movable support point 29. is the end 19a
As it moves to the side, it increases more and more, and the mirror body 1
quickly returns to the standing position.

Note that, in principle, the tension member 25 can be constructed by only the tension spring 26 or by a combination of the tension spring 26 and a linear connecting fitting, but in that case, the tension member 25 can be configured by the rear hinge in the tilted state. 10
In order to prevent interference with part b, it is necessary to form a groove or the like in the rear hinge part to provide an escape for the tension member, resulting in a problem that the structure becomes complicated. The reason why the C-shaped connecting fitting 27 is used in this embodiment is to solve the above problem, and since the connecting fitting 27 bypasses the rear hinge 10b in the tilted position, the rear hinge 10b There is no interference with other parts, and the structure of the rear hinge part is simplified.

Effects of the Invention As is clear from the description of the above-mentioned embodiments, the shock absorbing device for an automobile door mirror of the present invention has the following effects.
Not only can the mirror body be supported in a tiltable manner so that it automatically returns to the upright position when external force is removed, but the mirror body can also be maintained in the tilted state with a simple structure, and it can also be adjusted between the upright position and the tilted position. Switching between the positions can be performed extremely easily by simply tilting down or raising the mirror body.Also, while one end of the connecting bracket, which is curved in an almost C-shape, is attached to the mounting stay so that it can rotate freely, the connecting bracket When a tension member is suspended between the other end and the mirror body in the upright position, and the mirror body is rotated around the mounting stay around the hinge against the repulsive force of the tension member, Since the other end of the connecting fitting bypasses the hinge and connects with the one end, the line connecting it to the one end can be located closer to the mounting stay than the hinge, so the structure is simple and the support point of the tension member is By detouring around the hinge and bringing it closer to the mounting stay, there are advantages such as being able to reliably switch between standing and tilting with a sense of moderation.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention in an upright position, and FIG. 2 is a cross-sectional view of the same example in a tilted position. 1...Mirror body, 2...Mounting stay, 3...
Door, 10... Hinge member, 10a... Front hinge, 10b... Rear hinge, 19... Fulcrum guide,
19a, 19b... end portion, 25... tension member,
26...Tension spring, 27...Connection fitting, 28...
...Fixed support point, 29...Moveable support point.

Claims (1)

[Scope of utility model registration request] The mirror body is supported on a mounting stay attached to an automobile door so that it can be tilted backwards or forwards with one hinge or both hinges as the center of rotation, and a tension member is stretched between the mirror body and the mounting stay. In a shock absorber for an automobile door mirror, in which the mirror body is restored to an upright position by the tension of a tension member when an external force is removed, one end of a connecting fitting curved into an approximately C-shape is rotatably attached to a mounting stay. A tension member is suspended between the other end of the connecting fitting and the mirror body in the upright position, and the mirror body is rotated around the mounting stay around the hinge against the repulsive force of the tension member. when the other end of the connecting metal fitting bypasses the hinge and connects it to the one end, and
A fulcrum guide is formed on the mounting stay so that one end is closest to the support point of the tension member when the mirror body is in the upright position, the other end is close to the hinge that is the center of tilt of the mirror body, and is inclined away from the mirror body. Then, the tension member is stretched between the fixed support point of the mirror body and the movable support point provided so as to be movable on the fulcrum guide along the fulcrum guide, and the tension member is stretched beyond a certain angle to the mirror body. When tilting, the movable support point moves toward the hinge on the fulcrum guide, and the line connecting both support points of the tension member crosses the center of rotation of the hinge and moves toward the mounting stay. A shock absorbing device for an automobile door mirror, characterized in that it is configured as follows.