JPS61169346A - Buffer of door mirror for vehicle - Google Patents

Abstract

PURPOSE:To absorb vibrations of a car body and external shocks, if applied, by providing a buffer member made of an elastic material between an inner tube rotatably coupled with the support shaft supporting a door mirror and an outer tube. CONSTITUTION:A bolt 4 is fitted through upper and lower flanges 3a, 3b and is fixed with a nut 5. An inner tube 6 is rotatably coupled with the bolt 4 and is enveloped by an outer tube 7. A buffer member 8 is made of an elastic member such as rubber, is inserted between the inner tube 6 and outer tube 7, and is fixed to the inner tube 6 and outer tube 7. An arm 9 is extended from a door 1 to fix the outer tube 7.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vehicle-use device configured such that when a door mirror of a vehicle collides with an external object, a mirror case is tilted and rotated to alleviate the impact. This invention relates to a shock absorber for a door mirror.

[Conventional technology]

There are various types of shock absorbers for conventional vehicle door mirrors.
For example, there is a technique disclosed in Japanese Utility Model Application Publication No. 58-190235.

[Problems that the invention attempts to solve]

All conventional shock absorbers for vehicle door mirrors are mechanically complex and expensive.

[Unfortunate means to solve problems]

A shock absorbing device for a vehicle door mirror according to the present invention includes a shock absorbing member made of an elastic material interposed between an inner cylinder rotatably fitted to a support shaft and an outer cylinder surrounding the inner cylinder, and fixed to the inner and outer cylinders, The inner cylinder extends in the axial direction than the outer cylinder, and the support shaft is arranged between upper and lower flanges arranged on one side of the door and the mirror case, and both ends of the inner cylinder are pressed against each other, and the outer cylinder is attached to the other side. Constructed by connecting cylinders. By adopting and implementing such a configuration, the present invention solves this problem.

〔Example〕

A first embodiment will be explained based on FIGS. 1 to 3.

1 is a vehicle door, 2 is a mirror, and 3 is a mirror case. 3a is an upper flange, and 3b is a lower flange, both of which extend from the mirror case 3. 4 is the upper and lower flange 3
This is a bolt that is installed to penetrate between a and 3b and is secured with a nut 5, and has the function of a holding shaft. Reference numeral 6 denotes an inner cylinder, which is rotatably fitted onto the bolt 4. 7 is an outer cylinder, which surrounds the inner cylinder 6. A buffer member 8 is made of an elastic material such as rubber, and is interposed between the inner cylinder 6 and the outer cylinder 7.
Moreover, it is fixed to the inner and outer cylinders 6 and 7. Further, the inner cylinder 6 extends further in the axial direction than the outer cylinder 7 and the buffer member 8, and its both ends are pressed together between the upper and lower flanges 3a and 3b by tightening the bolts 4 and nuts 5. Reference numeral 9 denotes an arm extending from the door 1 and to which the outer cylinder 7 is fixed. 3C is a protrusion formed on the lower surface of the Hifuranshiro a, and by fitting into the substantially V-shaped groove 9a formed on the upper surface of the arm 9, it has a positioning function when the normal mirror case B is attached.

The operation of the first embodiment will be explained.

The mirror case 3 is normally in the position shown by the solid line in FIG. In this state, when the mirror case 3 collides with an external object, the inner cylinder 6 tries to rotate together with the upper and lower flanges 3a and 3b due to the rotational force at that time. However, the outer cylinder 7 is fixed to the arm 9, and the mirror case 3 can rotate within a range in which the buffer member 8 can be elastically deformed. Thereafter, when the external rotational force is removed, the mirror case 3 self-reciprocates to the position shown by the solid line in FIG. 2 due to the elasticity of the buffer member 8. Furthermore, when the vehicle body vibrates while the vehicle is running, the motion transmitted to the outer cylinder 7 via the arm 9 is absorbed by the elasticity of the buffer member 8 and is hardly transmitted to the inner cylinder 6. Moreover, by loosening the tightening of the nut 5, the inner cylinder 6 is attached to the upper and lower flanges 3a.

The pressure contact at 3b is released. Thus, the mirror case 3 can be set at any position between the position shown by the solid line in FIG. 2 and the position 3' shown by the imaginary line.

In this embodiment, the arm 9 can also have the function of the outer cylinder 7 without providing the outer cylinder 7.

Next, a second embodiment will be explained based on FIGS. 4 to 6. Components with the same configuration as the first embodiment are given the same numbers.
The explanation will be omitted.

fOa is an upper flange, and 1llb is a lower flange, both of which extend from the door 1. Bolts 4 are attached to the upper and lower flanges fOa, ? It is installed to penetrate between the ob. Both ends of the inner cylinder 6 are pressed together between upper and lower flanges 10a and 10b by tightening bolts 4 and nuts 5. 1
1 is an arm extending from the mirror case 3;
It is fitted so that it can rotate and move freely in the axial direction. An FE column-shaped pin 12 is fixed to the outer peripheral surface of the outer cylinder 7 by screwing or the like. The arm 11 has a vertical groove 1 as shown in FIG.
1b and a lateral groove 11c form a groove layer a. Inside the vertical groove 11b, there is a ring 13 that rotatably fits onto the pin 12 and has a spring holder formed with a protrusion 13a, and a coil spring 14 that urges the ring 16 downward in the vertical groove 111).
The horizontal groove 11c is integrally formed below the vertical axis 11b.The groove 11a also has a groove that the ring 13 rides over when moving between the grooves 11b and 11c. A cam mountain 11d is formed.

The operation of the second embodiment will be explained.

The ring 13 fitted onto the pin 12 is normally urged downward in the vertical groove 11b by a coil spring 14. In this case, the weight of the mirror case 3 and its accessories (not shown), the vibration force of the vehicle body, the collision force from the outside, etc. act on the coil spring 14 via the ring 11. The amount of deflection of the coil spring 14 is set so that the coil spring 14 does not cross over and reach the position of the horizontal groove 11c.

In this state, when the mirror case 6 is pressed downward with a pressing force greater than a predetermined value and rotated in the direction of arrow B shown in FIG. 5 while resisting the biasing force of the coil spring 14, the ring 13 is , and moves within the horizontal groove 11c as shown in Fig. 6.Thus, the mirror case 3 can be set at any position toward the door 1 within the length of the horizontal groove 11c, if necessary. becomes.

Next, a third embodiment will be explained based on FIGS. 7 and 8.

Components having the same configuration as those in the second embodiment are given the same numbers and their explanations will be omitted.

The arm 11 is fitted into the outer cylinder 7 so as to be rotatable and axially movable. A cylindrical pin 15 is fixed to the outer peripheral surface of the outer cylinder 7 by screwing or the like.

A lateral groove 11e is formed in the arm 11, and a pin 15 is housed therein. Further, the end arm 11 accommodates a coil spring 17 which urges a positioning recess 10c formed on the lower surface of the upper flange 10a via a ball 16. Furthermore, T-mu1
A gear 18 is fixed to the lower surface of 1. Reference numeral 19 denotes a motor installed on the lower flange 10b, which rotates the mirror case 6 via a gear 18 by a pinion 20 fixed to its rotating shaft. The opening angle E of the horizontal groove 11θ formed in the arm 11 is such that the pin 15 can be moved normally within the movement range of the mirror case 6 from the position shown by the solid line in FIG. 8 to the position 3'' shown by the imaginary line. It is set as follows.

Note that the horizontal groove 11e is connected to the mirror case 3 in the direction of arrow 1 shown in FIG.
4. When an external force is applied in the direction F, the opening angle may be widened by an appropriate angle G so that the mirror case 3 can be moved slightly to absorb the impact force. Also, −
The recessed portion 10C formed in the upper flange 10a accommodates the ball 16.
In order to allow the ball to move by the above-mentioned movement range, that is, to position the ball at the virtual line 16' shown in FIG. 8, a recess may also be formed at the ball position 16'.

The operation of the third embodiment will be explained.

The mirror case 6 is normally located at the position indicated by the solid line in FIG. 8, but it can be set at any position within the movement range by rotating the motor 19 in forward and reverse directions by remote control or the like.

In each of the above embodiments, the bolt 4 serving as the support shaft may be placed between the upper and lower flanges provided on either the door 1 or the mirror case 3, and the outer cylinder 7 may be connected to the other. good. That is, the outer cylinder 7 of the present invention is designed so that when vibration of the vehicle body or external impact force is applied, the elasticity of the buffer member 8 can absorb it, especially when the mirror case 3 is in the normal position. It is characterized by acting.

1. In each of the embodiments described above, the nut 5 may be a wing nut, for example, so that operations such as tightening the bolt 4 can be performed without using tools.

〔Effect of the invention〕

According to the present invention, by utilizing the elastic deformation effect of the shock absorbing member made of an elastic material, the structure becomes simple and an inexpensive shock absorbing device for a door mirror can be provided.

[BRIEF DESCRIPTION OF THE DRAWINGS] Figs. 1 to 8 all show embodiments of the door mirror shock absorbing device according to the present invention. Fig. 1 is a sectional front view of the first embodiment, and Fig. 2 is a front view of the first embodiment. 3 is a sectional view taken along the arrow line A-A in FIG. 1, FIG. 4 is a sectional front view of the second embodiment, FIG. 5 is a perspective view of the configuration shown in FIG. 4, and FIG. is the fourth
A partial perspective view of the arm and its surroundings with the mirror case moved in the configuration shown in the figure, FIG. 7 is a cross-sectional front view of the sixth embodiment,
FIG. 8 is a sectional view taken along the arrow line c-c in FIG. 7. 1...l'a, 5-...=mirror case,
52L, 5'b, IQalob...Flange, 4...Bolt, 6...Inner cylinder. 7...Outer cylinder, 8...Buffer member, 9.11
······arm. Above Figure 2 311 4m 7th page

Claims (1)

[Claims] A buffer member made of an elastic material is interposed between an inner cylinder rotatably fitted to the support shaft and an outer cylinder surrounding the inner cylinder, and is fixed to the inner and outer cylinders, so that the inner cylinder is axially fixed relative to the outer cylinder. For a vehicle, the support shaft is disposed between upper and lower flanges that extend from one side of the door to the other and that are disposed on one side of the mirror case, and that both ends of the inner cylinder are pressed against each other, and the outer cylinder is connected to the other side. Door mirror shock absorber.