JPH08284994A - Buffer device - Google Patents

Abstract

PURPOSE: To provide a buffer device capable of improving the buffer performance by mitigating the impact by an elastic buffer body when the impact is small, and mitigating the impact by the buffer force between the elastic buffer body and a brittle buffer body when the impact larger than the prescribed value is applied, and capable of being used without conducting the replacement work for each cases. CONSTITUTION: A buffer device 1 consists of a block-shaped elastic buffer body 1 made of the rubber-like elastic material such as the soft foamed body, and a block-shaped brittle buffer body 3 made of the brittle material such as the hard foamed body which are integratedly laminated with each other, and fixed to a base member 4. In the buffer device 1, the elastic buffer body 2 is arranged in the forward part and the brittle buffer body 3 is arranged in the rear part relative to the direction where the impact F is applied.

Description

Detailed Description of the Invention

[0001] The present invention relates to a shock absorber arranged and used in a portion to which an impact force is applied, and more specifically, a combination of an elastic shock absorber made of a rubber-like elastic material and a brittle shock absorber made of a brittle material. Shock absorber.

[0002]

2. Description of the Related Art Conventionally, a fence made of concrete or the like in a ball game field, a stadium, etc., is made of a sponge in order to reduce the impact force and prevent injuries when a player collides. It is known to attach a sheet-shaped elastic cushioning body in which the outer peripheral surface of the material is covered with a rubber sheet.

Further, the bumper portion of a construction vehicle, etc.,
It is known to attach and use a brittle cushioning body in which the outer peripheral surface of an inner material made of foamed urethane is covered with a protective cover made of iron in order to reduce the impact force at the time of collision.

[0004]

However, although the former elastic cushioning body can be repeatedly used, it has a problem that its relaxation performance is low, while the latter brittle cushioning body has a high relaxation performance. However, there is a problem in that once the impact force is buffered, it breaks brittlely, so it cannot be used repeatedly and requires replacement work.

A shock absorber in which the brittle fracture material is covered with an elastic sheet such as a rubber sheet has also been proposed. However, if the brittle fracture material breaks, it is necessary to replace the whole as in the above. There was a problem that the cost would be high. The present invention has been devised in view of such conventional problems, and uses a block-shaped elastic shock absorber and a brittle shock absorber in combination, and further arranges the elastic shock absorber in a direction in which an impact force acts. By installing it, the elastic buffer cushions the impact force against a small impact force, and it can be used without having to perform replacement work each time. It is an object of the present invention to provide a shock absorbing device capable of enhancing the relaxation performance by relaxing the impact force by the shock absorbing force of the shock absorbing body and the brittle shock absorbing body.

[0006]

In order to achieve the above object, the present invention comprises a block-shaped elastic cushion made of a rubber-like elastic material such as a soft foam and a brittle material such as a hard foam. The gist is that the block-shaped brittle buffer body is laminated and integrally formed. In the shock absorber, an elastic shock absorber is arranged in a front part in a direction in which an impact force acts, and the block elastic shock absorber has an inner member made of a block sponge and an outer periphery thereof. The brittle cushioning body is composed of an inner material made of foamed urethane and an iron protective cover covering the outer peripheral surface thereof. Furthermore, when the height between the elastic buffer and the brittle buffer is 10, the height ratio between the elastic buffer and the brittle buffer is 2: 8 to.
It is preferably 8: 2.

[0007]

The present invention is configured as described above, and the elastic shock absorber is disposed in the front portion in the direction in which the impact force acts, so that the shock absorber exerts an impact force of a certain force or less. In this case, the elastic buffer absorbs the impact force and can be used without replacing the shock absorber easily, and when the impact force exceeds a certain level, the elastic buffer and the brittle buffer can be used. The cushioning force with the body is used to reduce the impact force, and the relaxation performance can be enhanced.

Further, by using a combination of an elastic cushioning body and a brittle cushioning body having a cushioning performance corresponding to an impact force depending on the application, a higher cushioning performance can be exhibited.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a shock absorbing device 1 embodying the present invention. The shock absorbing device 1 includes a block-shaped elastic shock absorber 2 made of a rubber-like elastic material such as soft foam.
And a block-shaped brittle cushioning body 3 made of a brittle material such as a hard foam are laminated and integrally formed, and fixed on the base member 4.

The cushioning device 1 is such that an elastic cushioning body 2 is arranged in a front portion and a brittle cushioning body 3 is arranged behind the elastic cushioning body 2 in a direction in which the impact force F acts. The block-shaped elastic cushioning body 2 is formed by covering the outer peripheral surface of an inner material 5 made of block-shaped sponge with a protective material 6 made of a rubber sheet, and the brittle cushioning body 3 is made of urethane foam. Protective cover 8 made of iron on the outer peripheral surface of inner material 7 made of
It is configured by covering with.

The elastic cushioning body 2 and the brittle cushioning body 3 are integrally joined by laminating together with a fastening member such as a bolt in addition to an adhesive or the like. The elastic cushioning body 2 and the brittle cushioning body 3 are joined together. When the height of the elastic cushioning body 2 and the brittle cushioning body 3 is 4: 6, for example, the height ratio of the elastic cushioning body 2 and the brittle cushioning body 3 is 4: 6, thereby exhibiting high cushioning performance against a constant impact force. It is something you can do.

The sizes of the elastic cushioning body 2 and the brittle cushioning body 3 are arbitrarily designed according to the application.
The volume and height are set according to the impact force.
As described above, in the shock absorber 1 according to the present invention, by disposing the elastic shock absorber 2 in the front portion in the direction in which the impact force F acts, the shock force F equal to or less than the constant force is applied to the shock absorber 1.
Is applied, the elastic cushioning body 2 is deformed and the impact force F
Is convenient and can be used without replacing the brittle buffer 3 easily, which is convenient.

When an impact force F above a certain level is applied, the impact force is relieved by the cushioning force due to the elastic deformation of the elastic cushioning body 2 and the brittle fracture of the brittle cushioning body 3, so that the relaxation performance can be remarkably enhanced. it can. Further, by using in combination with the elastic cushioning body 2 and the brittle cushioning body 3 which have the cushioning performance corresponding to the impact force F depending on the application, it is possible to further enhance the cushioning performance.

[0014]

As described above, the present invention provides a block-shaped elastic buffer made of a rubber-like elastic material such as a soft foam and a block-shaped brittle buffer made of a brittle material such as a hard foam. By stacking and forming integrally, and arranging the elastic shock absorber in the direction in which the impact force acts, the elastic shock absorber relaxes the impact force against a small impact force, and the impact force above a certain level. When is applied, there is an effect that cushioning force between the elastic cushioning material and the brittle cushioning material reduces the impact force to enhance the relaxation performance, and the brittleness is maintained unless the impact force exceeds a certain level. Since the buffer does not break, you can use it without having to perform replacement work each time,
In addition, it is possible to use a shock absorber designed to have an arbitrary size according to the application, and it is also possible to manufacture at a low cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a shock absorber embodying the present invention.

[Explanation of symbols]

 1 shock absorber 2 elastic shock absorber 3 brittle shock absorber 4 base member 5 inner material 6 protective material 7 inner material 8 protective cover

Claims (4)

[Claims] 1. A block-shaped elastic cushioning body made of a rubber-like elastic material such as a soft foam and a block-like brittle cushioning body made of a brittle material such as a hard foam are laminated and integrally formed. A shock absorber characterized in that 2. The shock absorber according to claim 1, wherein an elastic shock absorber is arranged in a front portion in a direction in which the impact force acts. 3. The block-shaped elastic cushioning body is composed of an inner material made of block-shaped sponge and a protective material made of a rubber sheet covering the outer peripheral surface thereof, and the brittle cushioning body is made of urethane foam. The shock absorber according to claim 1 or 2, comprising an inner member and a protective cover made of iron that covers the outer peripheral surface of the inner member. 4. The height ratio between the elastic buffer and the brittle buffer is 2: 8 to 8: 2 when the height between the elastic buffer and the brittle buffer is 10. Item 3. The shock absorber according to Item 3.