JPH1176452A - Shock absorbing mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively absorb a shock so as to effectively prevent an injury or the like by providing a structure for emitting air from a large hole of a center sheet when a shock is received, and giving resistance to a flow of air to absorb a shock. SOLUTION: Many large holes 12 are formed in a center sheet 11 made of a soft independent cell foam material. Small holes 14 of a middle sheet 13 made of an impermeable material are lapped on the large holes, and further the sheet is covered with a surface sheet 15 made of felt or the like. The air in the large holes are emitted while resistance is given thereto by the small holes and the surface sheet to absorb a shock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a jumping horse for gymnastics,
The present invention relates to a shock-absorbing mat used for landing on a horizontal bar, a floor for rehabilitation in a hospital, and the like.

[0002]

A conventional mat of this type is obtained by laminating a polyurethane foam and a felt. This is because the material only absorbs the shock due to the elasticity of the material itself, so that the shock absorption is not sufficient, and it is extremely heavy and inconvenient to handle.

Accordingly, an object of the present invention is to improve such inconveniences, to form a shock absorbing structure on a mat, to more effectively absorb shocks, and to reduce the weight. It is.

[0004]

The mat of the present invention has a structure in which a large number of large holes are formed in a foamed center sheet, and the large holes are covered with small holes, felt or the like. When air is compressed and deformed, the air in the large holes is released while giving resistance through the small holes or the like, thereby absorbing the impact.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the present invention comprises a central sheet made of a soft closed-cell foam material and having a large number of holes, and a non-permeable material such as a hard closed-cell foam material and having a large number of small holes. The small holes are bonded to both sides of the center sheet so as to overlap the large holes of the center sheet, and when compressed and deformed by receiving an impact, the air in the large holes is released from the small holes while providing resistance. An intermediate sheet to be made, and a material having air permeability such as felt, respectively, are superposed on the surface of the intermediate sheet, and resist the air released from the intermediate sheet by receiving an impact through the inside or a gap with the intermediate sheet. And a cover that covers the entire sheet and protects the surface.

The center sheet is a member that forms the center of the shock absorption of the mat, and has a function of compressively deforming when subjected to an impact and sending out air from the large holes. For this reason, it is necessary that the material is sufficiently flexible and does not have air permeability, and a soft closed-cell foam material is suitable.

[0007] The intermediate sheet has a function of providing resistance to the flow of air from the large hole of the center sheet by the small holes. In addition, it has a function of closing both sides of the large hole and transmitting the applied impact force to the portion of the center sheet other than the large hole. For this reason, it is necessary to be a non-breathable material, and it has not only flexibility but also a certain degree of rigidity, disperses and transmits an impact force, and does not collapse small holes even when compressed. And a rigid closed-cell foam is suitable. Further, since the small holes and the large holes must surely overlap, the center sheet and the intermediate sheet need to be bonded.

[0008] The topsheet has a function of giving further resistance to the flow of air released from the small holes. In addition, the applied impact force is dispersed and transmitted to the intermediate sheet and the center sheet,
At the same time, it protects a foam material having relatively low surface strength. For this reason, air-permeable materials such as felt and nonwoven fabric are suitable. Even if the topsheet has a gap between the topsheet and the middlesheet, the above-mentioned function is not hindered, but rather, it is desirable to cause slippage between the topsheet and the middlesheet when the mat is folded. Just bond to, not glue. Further, in order to prevent uneven thickness or the like due to the slip, it is desirable to perform quilting processing to increase strength and abrasion resistance.

[0009] The cover has a function of maintaining the sheets in a stacked state and protecting the surface. For this reason, it is convenient to form the entire cover into a bag shape and store each sheet therein, and furthermore, if the respective sheets can be easily put in and out with a fastener or the like, only the cover should be washed. Is convenient. Since the cover is used in a gymnasium, a hospital, or the like, it is desirable that the cover be subjected to flameproofing.

[0010] Further, it is advantageous that the cover is made of a material having no air permeability, and has a structure having a partially air-permeable window. After the compression and deformation by the impact force, the air is sucked in when the center sheet recovers, so that if the cover has air permeability, dust or the like adhering to the surface can enter the top sheet and promote dirt. . Therefore, it is desirable not to have air permeability. However, if the mat is not folded and the mat is folded or rolled and stored, it becomes inconvenient to handle. Therefore, it is preferable to provide a wind-permeable window such as a mesh on a part of the cover.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention.

In the shock absorbing mat 10, the center sheet 11 is made of a soft closed-cell foam material, for example, Samperika closed-cell PE foam LC300 manufactured by Sanwa Kako Co., Ltd., and has a large number of large holes 12,. This center sheet 11
Are specifically determined experimentally, but in the illustrated example, the thickness is 50 mm, the diameter of the large hole is 40 mm, and the distance between the large holes is the center. Is 60 mm.

The intermediate sheets 13 and 13 are made of a hard closed cell foam material, for example, Samperika closed cell P manufactured by Sanwa Kako Co., Ltd.
It is made of E-form LC1400 and has many small holes 14,. In the illustrated example, the thickness of the intermediate sheet 13 is 10 mm, and the diameter of the small hole is 2 mm. The intermediate sheets 13 are bonded to both surfaces of the center sheet 11 such that the small holes 14,... Are located at the centers of the large holes 12,.

The top sheets 15, 15 are made of felt, and the thickness of the illustrated example is 10 mm. Each of the intermediate sheets 13 and 13 is overlaid on both surfaces and is not bonded. Although illustration is omitted, quilting processing is performed respectively.

The cover 16 is made of a non-breathable polyester sheet and has been subjected to flameproofing. This cover 16
Has a zipper 17 on the side, from which the above-mentioned sheets can be put in and out. In addition, windows 18,... Made of mesh are provided at the ends.

Since the shock absorbing mat 10 has the above structure, as shown in FIG. 3, when the mat is laid on a floor surface 19, and a landing force is applied thereto to apply an impact force, a large hole is formed. 12
Is deformed and the air inside is compressed.
4. Discharged to the surroundings through the topsheet 15 or between the intermediate sheet 13 and the topsheet 15, and the impact force is absorbed by the resistance at this time.

[0017]

As described above, the impact-absorbing mat of the present invention has a structure in which, when an impact is applied, air is released from the large hole of the central sheet, and the impact of this air flow is absorbed to absorb the impact. Therefore, the impact can be effectively absorbed. For this reason, injuries and the like can be effectively prevented, and the weight is remarkably smaller than the conventional one simply utilizing the elasticity of the material, which is about one third,
Handling becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the same example in a broken manner.

FIG. 3 is a cross-sectional view when an impact force is applied to the example.

[Explanation of symbols]

10 Shock absorbing mat, 11 Center sheet, 12 Large hole, 13 Intermediate sheet, 14 Small hole, 15 Surface sheet, 16 Cover, 17 Fastener, 18 Window, 19
Floor.

Claims (2)

[Claims] 1. A central sheet made of a soft closed-cell foam material and having many large holes, and a non-permeable material such as a hard closed-cell foam material and having many small holes, Each small hole is adhered so as to overlap with the large hole of the center sheet, and when compressed and deformed by receiving an impact, an intermediate sheet that releases the air in the large hole from the small hole while giving resistance, and a felt etc. A surface which is made of a material having air permeability and is superimposed on the surface of the intermediate sheet, and discharges air released from the intermediate sheet upon impact to the surroundings while providing resistance through the inside or through a gap with the intermediate sheet. An impact-absorbing mat comprising a sheet and a cover for covering the entire sheet and protecting the surface. 2. The shock-absorbing mat according to claim 1, wherein the cover is made of a non-permeable material and has a partly permeable window.