JPS61241540A - Energy absorber - Google Patents

Abstract

PURPOSE:To realize small size, light weight and increased damping capacity by accommodating a shock absorber comprising bellows, coil springs and so forth in a housing. CONSTITUTION:An outer end of a bellows 1 with a built-in coil spring 3 is fastened together with the coil spring 3 by means of a perforated plate 6, while the inner end is fastened together with the coil spring 3 by means of a blind fixing plate 5 to constitute a shock absorber with perforation at one end and air tightness at the other end. One or more of the said shock absorbers are accomodated in a housing 10 with a shock transmission piece 9 attached.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to energy absorbing devices. Most conventional energy absorption devices are mechanical, and as a result, large and heavy eagles have little ability to dampen the thrusting force and restoring force. The present invention solves the above-mentioned drawbacks and can be miniaturized, lightweight, and has a large damping capacity, or can step-up the expansion and contraction speed.

The purpose is to provide an energy absorbing device.

Next, an example of the implementation of the energy absorbing device according to the present invention will be described based on the drawings. :1m.

Figure 4 is an explanatory cross-sectional view, first referring to Figure 1.

Two sets of corrugated bellows 1 of the same shape each having a built-in coil spring 3 are fixed at their outer ends together with the coil springs 3 using perforated fixing plates 6, and at the same time, their inner ends are fixed together with the coil springs 3 using non-perforated fixing plates 5. Two hole-tight buffers are formed and stored in a container 10, and the back surface of each perforated fixing plate 6 is fixed to the inner side of the container 10. Furthermore, a fixture 11 is used to fix the space between the two non-porous fixing plates 5, and a support shaft 7 fixed to one end of the fixture 11 supports the tip of the shock absorbing device 9 in a freely rotatable manner. .

The central part of the buffer conductor 9 is rotatably supported by a support shaft 7 fixed to another object, and the other end is connected to the object to be buffered. Next, in FIG. 2, two sets of cylindrical bellows 2 of the same shape are fixed to the front and back surfaces of one non-porous fixing plate 50.
and both ends of a set of coil springs 3 containing the two sets of cylindrical bellows 2 are fixed together with two perforated fixing plates 6, and one shock absorber is installed in a perforated airtight structure. , stored in the container 10.

Furthermore, a single-shaped buffer conductor 9 connected to the back surface of one of the perforated fixing plates 6 and projecting to the outside through the container 10 is fixed to the shell perforated fixing plate 6. In Figure 3, 1
Two non-porous fixing plates 50 were fixed to the front and back surfaces. Both the other ends of two sets of wavy bellows 1 with different allowable amounts and vent diameters, and the other ends of two sets of coil springs 3 with different numbers of windings each containing two sets of wavy bellows 1 are connected together. Two perforated airtight shock absorbers fixed by two perforated fixing plates 6 are stored in a container 10.

One end of the support frame 8 is inserted between the buffers, and a U-shaped buffer conductor 9 is fixed to the outside of the other end of the support frame 8. Next, in FIG. 4, it was fixed to the front and back surfaces of one non-porous fixing plate 5. Both the other ends of the two sets of wavy bellows 1 with different allowable amounts and vent diameters and the other ends of the coil springs 3 with different numbers of windings that incorporate the two sets of wavy bellows 1 are connected to each other using two coil springs. It was fixed with a hole fixing plate 6, and further fixed on the back surface of the hole fixing plate 6. Further, the other end of the corrugated bellows 1 having a large allowable amount and the diameter of the vent hole, and the corrugated bellows 1t-built-in. Furthermore, one perforated airtight shock absorber, which is formed by fixing the other end of the coil spring 3 having a large number of turns with a perforated fixing plate 6, is stored in the container 10.

In addition, in the above, an I-shaped buffer conductor 9 connected to the back surface of the perforated fixing plate 6 on the side of the corrugated bellows l having the minimum allowable amount and protruding to the outside through the container lO is connected to the perforated It is fixed to a fixed plate 6.

Note that other springs may be used as the coil spring 3 in FIG. 1. Next, to explain the operation, when the object to be cushioned receives an impact in FIG. The transmission is transmitted to two shock absorbers on the left and right, and the two shock absorbers constantly contract and expand against the permissible ventilation capacity of the ventilation hole 4 of the corrugated bellows 1 and the restoring capacity of the coil spring 3. When the spring force of the left and right coil springs 3 exceeds the impact force after buffering, the restoring force of the springs is applied to both the left and right wave-shaped bellows 1.
The coil spring 3 performs expansion and contraction at a constant speed, and absorbs energy for both buffering and restoring. Next, a shock absorbing conductor 9 is fixed to the front, as shown in Figures 2.3 and 4 to buffer the impact force received from the front.

In the case of Fig. 2, the impact force is buffered at a constant speed, but in the case of Fig. 3, the buffering speed is set at two stages, and as in the case of Fig. 1, both the shock absorbing and restoring effects are compressed and expanded at the same time. In the case of FIG. 4, the impact force is damped at three stages of damping speed. Since the energy absorbing device of the present invention is constructed as described above, it can be used in a wide range of industrial applications for alleviating impacts on vehicle loading platforms, bumpers, rail terminals, and the like.

[Brief explanation of drawings]

1.2.3.4 is a cross-sectional explanatory diagram. 1 wave shaped bellows 2 cylinder shaped bellows 3 coil springs 4 ventilation holes 5 Non-perforated fixing plate 6 Perforated fixing plate 7 Support shaft 8 Support frame 9 Buffer conductor 1o container 11 fixings

Claims (1)

[Claims] 1. An airtight bellows having a ventilation hole and a spring are arranged in parallel,
In addition, either one shock absorber made by fixing both ends of the spring and the bellows with a common fixing plate, or several shock absorbers of the same or different shapes fixed in series can be inserted alone or into the container. do,
An energy absorbing device comprising a shock absorbing device fixed thereto. 2. The energy absorbing device according to claim 1, wherein the elastic surface of the bellows is wave-shaped. 3. The energy absorbing device according to claim 1, wherein the elastic surface of the bellows is cylindrical. 4. The energy absorbing device according to claim 1, wherein the parallel state of the bellows and the spring is such that the spring is built inside the bellows. 5. The energy absorbing device according to claim 1, wherein the parallel state of the bellows and the spring is such that the bellows is built inside the spring. 6. The energy absorption device according to claim 1, which functions as both a bellows and a spring.