JPH0414198Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to protective equipment that protects the human body from impact.

<Conventional technology> Conventional armor has an elastically deformable material such as rubber built-in as a shock absorber, and the impact applied from the outside is absorbed by the elastic deformation of this shock absorber. It is configured.

<Problems to be solved by the invention> In such armor, the impact force absorbing body is elastically deformed by external impact force, and this elasticity acts as an impact on the human body, resulting in a large external impact. There was a problem in that the effect was considerably reduced against force.

<Means for solving the problem> The proposed armor has an inner layer that comes in contact with the human body made of a flexible material, an outer layer made of a hard synthetic resin, and a layer with a penetration depth of about 50 to 200 between the inner and outer layers. It has a structure in which a gel-like material layer is interposed, and attempts to attenuate and absorb external impact force by the inelastic deformation of the gel-like material and the impact resistance of the hard outer layer.

The penetration shown here is JIS K 2530-1976
− (50g load).

This standard concerns the petroleum asphalt penetration test method, and for samples with a penetration of 350 or less, the test is carried out with a load of 100g, but in the case of gel-like substances, the test is carried out with a load of 50g. ing.

<Function> In the present armor, an external impact force is first absorbed by the rigidity of the hard outer layer, and an impact force applied through the hard outer layer is absorbed by the inelastic deformation of the gel-like substance.

In other words, the gel-like material layer deforms in the direction of the external impact force while uniformly dispersing it. At this time, the frictional force between molecules is used as a resistance force to attenuate and absorb the external impact force, and the gel-like material also deforms in the direction of the external impact force. Because it has conductivity similar to that of a liquid, it can rapidly and uniformly transmit the impact force applied to one point to the surrounding area, thereby spreading the impact force over a large volume and attenuating it rapidly. , because it absorbs.

Therefore, the gel-like material layer generates very little elastic repulsion force when absorbing impact force, and therefore can prevent impact from being applied to the human body due to the elastic repulsion force accompanying impact absorption.

<Example> Below, the attached example drawings of the proposed armor will be explained.

Figure 1 shows that the inner layer 1 in contact with the human body is made of a low-resilience material.
For example, the armor is made of a flexible material such as a high damping rubber, a porous elastic material, or a sponge, and an outer layer 2 and a gel-like material layer 3 are layered over an inner layer 1.

The outer layer 2 is made of a hard synthetic resin such as polypropylene resin or hard vinyl chloride resin, and is constructed so that it is deformed when subjected to an external impact force and restored when the impact force is removed. ing.

The gel-like material layer 3 is made by interposing a gel-like material such as gyricone gel between the outer layer 2 and the inner layer 1.
200, preferably one with a penetration of 100 to 200.

That is, if the penetration of the gel-like substance is too small, impact force will be easily transmitted to the human body, and if the penetration is too large, the gel-like substance will have a strong liquid-like character and its impact force absorption effect will be reduced.

The thickness of the gel-like material layer 3 may normally be set in the range of about 1 to 10 mm depending on the purpose of use of the armor, but for karate practice etc., a thickness of about 5 mm is required. .

In the above, the inner layer 1 may be made of thick woven fabric, non-woven fabric, synthetic resin film or sheet, etc. as shown in FIG. The product name "Taftan" manufactured by Chemical Products Company is good. Furthermore, although the above-described embodiments do not show means for attaching to the human body, conventionally known means such as a belt or band may be used as the attaching means.

<Effect of the invention> Since the proposed armor is as described above, the external impact force is first dissipated by deforming the hard outer layer 2 and is uniformly dispersed by the inelastic deformation of the gel-like material layer 3. It has the effect of being absorbed and almost never reaching the human body.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are perspective views showing the main parts of the proposed armor, respectively. In the figure, 1 is an inner layer, 2 is an outer layer, and 3 is a gel-like material layer.

Claims (1)

[Scope of utility model registration request] The inner layer that comes into contact with the human body is made of a flexible material, and a gel-like material layer and a hard outer layer are sequentially laminated on top of this inner layer, and the gel-like material layer has a penetration depth of 50 to 200.
The hard outer layer is made of a material that is deformed by an external impact force and has restorability.