JPH0989045A - Shock absorbing support structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain rationalization while an excellent shock absorbing characteristic is obtained, in a shock absorbing support structure for a device utilized in space. SOLUTION: A supported body 1 has a flange part 1A further a mounting hole 1B. In order to shock absorptively support the supported body 1, holders 7, 8 are interposed between a mounting bolt 9 and the mounting hole 1B, O rings 3, 4, 5, 6 are inserted between the holders 7, 8 relating to a mounting axial direction and its vertical direction. An excellent shock absorbing characteristic is obtained against a vibration in any direction, by variably forming a collapsing margin of the O rings 3 to 6, a spring constant can be arbitrarily set, so that the rationalization of a natural vibration frequency can be also attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing support structure, and more particularly to a shock absorbing support structure applied to equipment operated in outer space.

[0002]

2. Description of the Related Art Conventionally, this type of buffer support structure generally uses a vibration-proof rubber.

[0003]

In the conventional buffer support structure using only the vibration-proof rubber, the natural frequency of the supporting system cannot be made variable, so that it is difficult to optimize the buffer characteristics. Met.

Further, in the equipment operated in space, vibration acts in all directions, but the structure using the conventional anti-vibration rubber cannot suppress the vibration in all directions.

Therefore, an object of the present invention is to provide a shock-absorbing support structure in which the natural frequency of the supporting system can be easily varied and the shock-absorbing characteristics can be optimized.

Another object of the present invention is to provide a shock-absorbing support structure which can be applied to a space device in which vibrations in all directions work and which can obtain excellent shock-absorbing characteristics.

[0007]

In order to solve the above-mentioned problems, in the buffer support structure according to the present invention, an O-ring is interposed between the mounting base and the supported body in the mounting axial direction and the vertical direction thereof, and the O-ring is arranged. A shock-absorbing support structure that can change the crushing margin is obtained.

According to the present invention, it is possible to suppress vibrations in the mounting direction and the vertical direction thereof, and adjust the squeezing margin of the O-ring or select and use an O-ring having a different spring constant to provide a buffer support structure. The spring constant of the system supported by is set arbitrarily, and the natural frequency is optimized.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of an example of a buffer support structure according to the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG.

In the figure, the supported body 1 has a flange portion 1A and a mounting hole 1B, and is mounted on a mounting base 2 with a mounting bolt 9 via these. Holders 7 and 8 are interposed between the mounting bolt 9 and the mounting hole 1B for cushioning and supporting the supported body 1, and one or more O-rings 3, 4, 5 and 6 are inserted between the holders 7 and 8. ing.

When the mount 2 vibrates, the O-rings 3, 4,
Due to the buffering properties of 5 and 6, the transmission of vibration to the supported body 1 is alleviated. In particular, the O-rings 3 and 6 dampen vibrations in the mounting axis direction, and the O-rings 4 and 6 in this vertical direction.
5 buffers the vibration.

Further, the natural frequency of the supporting system is determined by the spring constant of the O-ring and the mass of the supported body 1 and becomes a major factor of the cushioning characteristic during vibration. Therefore, the natural frequency is optimized. There is a need. The spring constant of the supporting system can be adjusted by the crushing allowance of the O-rings 3, 4, 5, and 6. The crushing margin is adjusted by changing the dimensions of the holders 7 and 8 to adjust the gaps for inserting the O-rings 3, 4, 5, and 6. By this adjustment, the spring constant of the supporting system can be arbitrarily set, the natural frequency can be optimized, and the cushioning characteristics can be optimized. As a material of the O-ring applied to the present invention, silicon rubber, fluorine rubber, lithographic rubber or the like is used.

Further, instead of adjusting the squeezing allowances of the O-rings 3, 4, 5, and 6, a plurality of O-rings having different spring constants are prepared and selectively used to optimize the natural frequency. be able to.

[0014]

As described above, in the shock-absorbing support structure of the present invention, the O-ring is used in the mounting axis direction and the vertical direction thereof, and the natural frequency is optimized by changing the O-ring and selecting the holder. It is possible to optimize the buffer characteristics,
In particular, it is an excellent buffer support structure for space equipment.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a buffer support structure of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Supported body 1A Flange portion of supported body 1B Mounting hole of supported body 2 Mounting base 3, 4, 5, 6 O-ring 7, 8 Holder 9 Mounting bolt

Claims (4)

[Claims] 1. A shock-absorbing support structure in which an O-ring is interposed between a mounting base and a supported body in the mounting axial direction and in the vertical direction. 2. The shock-absorbing support structure according to claim 1, wherein a holder for supporting the O-ring is inserted into the mounting hole of the supported body, and the O-ring is incorporated between the wall surface of the mounting hole and the surface of the holder. 3. The shock-absorbing support structure according to claim 2, wherein the tip of the holder has a splayed portion, and an O-ring is inserted between the splayed portion and the surface of the supported body. 4. The shock-absorbing support structure according to claim 2, wherein the holder allows the crushing margin of the O-ring to be variable.