JP3129901B2 - Shock absorbing board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ski slope, an athletic gym, and various other types of sports facilities and leisure facilities, which are installed in advance in places where a person may inadvertently jump in and cause injuries. The present invention relates to a versatile shock absorbing board that can be used as a dive or collision prevention plate, or can be used as a cushioning material along a wall surface where there is a risk of injury due to a collision.

[0002]

2. Description of the Related Art Conventionally, in a ski slope, an athletic gym, other athletic facilities, leisure facilities, and the like, for example, urethane foam is sewn in a bag form from the viewpoint of preventing accidents caused by unexpected collisions of skiers and competitors. The shock absorption board stored in the product can be wound around the pole of the ski lift, or the board can be erected and fixed in a danger area, or along the hard wall surface to prevent injury due to its buffering action. Is planned.

[0003] In addition to the above-mentioned urethane foam, such a shock-absorbing board is also used as appropriate, in which a laminated product obtained by laminating an elastic body of a rubber sheet or a closed-cell foam to a constant thickness is housed in a bag-shaped sewing product. Have been.

However, in the case where urethane foam, which is mainly used at present for shock-absorbing boards, is stored in a bag-shaped sewn product, the urethane foam itself is an open-cell porous product and has a soft property. At the time of collision, a so-called danger of bottoming appears, which necessitates the urethane foam to be formed to a considerable thickness, and has a defect that the bulky transport of the product is troublesome and troublesome.

When the bag-shaped sewn product in which the urethane foam is stored is broken due to an impact or the like and is broken or frayed, water penetrates from the damaged portion due to rainfall or the like.
As a result of retaining water with urethane foam, the weight of the shock absorbing board itself increased significantly, making transport and installation extremely difficult.Furthermore, when the shock absorbing board was not used, such as during off-season, these were stored in a warehouse etc. In such a case, there is a problem that rainwater retained by urethane foam decomposes with time and an enormous odor is generated, and there is a situation in which various improved products are expected to appear.

[0006] In order to eliminate the defect of the shock absorbing board due to the open-cell foam such as urethane foam, a laminated product made of an elastic body of a rubber sheet or a closed-cell foam is housed in a bag-shaped sewing product. And those in which bent and meandering rod-shaped foams are juxtaposed in the thickness direction have been proposed, but in the case of a shock absorbing board using such a material, provisional instructions, an increase in the weight of the board itself and Even if it can eliminate bad smell due to decay, it has extremely high repulsion characteristics,
There is a problem with the so-called cushioning property, and it is not a board that can safely absorb shocks. It has the risk of bruising or whiplash depending on the impact situation, and it is regrettable that it is bulky. Was.

[0007]

However, the shock absorbing board according to the present invention, which has been developed in view of the above-mentioned conventional deficiencies, has a water retention property on the shock absorbing board itself. There is no shock, so there is no weight increase even if the bag-shaped sewn product breaks and rainwater infiltrates, and there is no odor due to the decay of rainwater, providing an impact-absorbing board that demonstrates ease of transportation and installation The purpose is to do.

[0008] Since a space is always interposed in the shock absorbing board at the time of impact, the impact resilience is weakened by the air layer of the space regardless of the use of the closed cell foam, and the shock absorbing board has a flexible shock absorbing property. Can be a board, regardless of various collision postures or collision situations, bruising by the board,
It is an object of the present invention to provide an impact-absorbing board that is extremely safe and does not cause injuries such as whipping symptoms.

In order to effectively achieve the above object,
The shock absorbing board according to the present invention has a cylindrical shape made of a closed-cell foam so that a space 3 is provided between the sheets 1 and 2 facing each other, and the sheets are bonded to each other. It is characterized by a shock-absorbing board in which straight rod-shaped pieces A composed of cylindrical bodies 4 of the same diameter are fixed side by side so as to be in contact with or adjacent to each other, and the straight rod-shaped pieces A are prismatic and have the same thickness. A straight bar-shaped piece A in which a plurality of cylinders 4 and prisms 5 are interposed between sheets 1 and 2 made of a closed-cell foam, wherein a plurality of the strips 5 are fixed side by side at predetermined intervals. The shock-absorbing board B is housed in a tough bag-shaped sewn product C provided with an optional opening / closing means 6, and the shock-absorbing board B is fixed. Is fixed to the outside of the bag-shaped sewn product C in which Any attachment mechanism having means 8 is one that is characterized by shock-absorbing board that is Katachi設.

[0010]

According to the shock-absorbing board of the present invention, the sheet made of the closed-cell foam is abutted and fixed so that the straight rod-shaped pieces made of the closed-cell foam are sandwiched from both sides thereof. Two spaces are always interposed between the rod-shaped piece group and both sheets, and this space portion appears as a so-called cushioning effect at the time of collision, and the force at the time of collision is extremely flexible regardless of the use of closed-cell foam. In this case, the action of absorbing a suitable repulsive group appears, the weight increase and the generation of offensive odor due to the water retention are prevented, and the transport and installation are extremely easy.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a shock absorbing board according to the present invention.

FIG. 1 is a perspective view in which a cylinder made of a closed-cell foam is interposed and bonded between sheets made of a closed-cell foam, and FIG.
FIG. 3 shows a perspective view in which prisms made of closed cell foam are interposed and bonded, and FIG.
FIG. 4 shows a perspective view in which a cylinder made of a closed-cell foam and a prism are interposed and bonded regularly or irregularly, and FIG. 4 is a perspective view showing a state in which the shock absorbing board is housed in a bag-shaped sewing product. I have.

As shown in FIGS. 1 to 3, the sheets 1, 2 and the straight bar-shaped piece A are each produced from a closed-cell foam, and the closed-cell foam is a soft polyethylene foam. , Polypropylene foams, ethylene-vinyl acetate copolymers, etc., having a foaming ratio of 5 to 50 times are applied. Here, the size and thickness of the sheets 1 and 2 made of the closed-cell foam are naturally determined according to the required properties from the place of use and the object to be used.

FIG. 1 shows a shock-absorbing board B of a construction which can be installed in any place and which is used in a substantially used manner. Further, a cylindrical member 4 made of a closed-cell foam having the same diameter and having a cylindrical shape having substantially the same length as the vertical width of the sheets 1 and 2 is fixed side by side. The cylindrical member 4 is interposed between the sheets 1 and 2 such that opposing side surfaces are in contact with or adjacent to each other, and are bonded by a general method such as heat fusion or adhesive bonding. In this shock absorbing board B, spaces 3 serving as air layers are provided between the sheets 1 and 2 and the cylinder 4 and in the inner diameter of the cylinder 4 respectively.
Further, a prism 5 made of the same material can be interposed and adhered along both side edges of the sheets 1 and 2 in the longitudinal width direction. The outer diameter and the thickness of the cylindrical body 4 which is the straight rod-shaped piece A are appropriately determined according to the purpose. According to this configuration, at the time of impact, the space 3 which is an air layer exists between the sheets 1 and 2 and the cylindrical object 4 and the inner diameter of the cylindrical object 4, respectively. To produce soft shock absorption. The size of the shock absorbing board B can be 2 m in width, 1 m in length, 10 cm in thickness, and the like.

FIG. 2 shows a structure in which two sheets 1 and 2 made of opposed closed-cell foam are sandwiched between the sheets 1 and 2.
In this example, a plurality of prisms 5 having the same thickness and having the same prism shape as the vertical members 2 and having the same length are fixed side by side through a space 3 at a predetermined interval. The prism 5 is formed by laminating and bonding strip-shaped foams, and is bonded through a desired space 3 by using a general method such as heat fusion or adhesive bonding. In order to form such a prism 5, a number of closed-cell foams cut into strips are superposed and adhered and integrated to obtain a laminated product. The thickness, the dimensions of the laminate, and the dimensions of the space 3 are subject to use. It is determined by the required characteristics coming from the object. According to this configuration, since the space 3 that is the air layer exists in a relatively wide range,
At the time of impact, the sheet 1 in the contact direction enters the space 3 while curving, and soft impact absorption occurs.

FIG. 3 shows a shock absorbing board B.
In this modified embodiment, a cylindrical member 4 and a prism member 5 having substantially the same length as the vertical width of the sheets 1 and 2 are interposed between two sheets 1 and 2 made of opposed closed-cell foams. The straight bar-shaped pieces A are fixed side by side regularly or irregularly, and the same heat-sealing or other bonding method as described above is adopted for the bonding. This also has a space 3 interposed.
According to this configuration, a tough shock-absorbing board B can be obtained due to the area of the bonding area of the prism 5, but a soft shock-absorbing property can be obtained by the cylindrical body 4 itself and the spaces 3 between the sheets 1 and 2.

One of the defects of the conventional shock absorbing board is an increase in the weight of the shock absorbing board and generation of offensive odor due to infiltration of rainwater. To solve this problem, a strong material which does not damage the material of the bag-shaped sewing product is used. It was considered to use it, but it was extremely expensive in practice and was not practical. From such a viewpoint, closed-cell foam is selected as a buffer material that prevents rainwater from entering even if the temporary bag-shaped sewn product breaks, and does not trap rainwater even if it enters. However, since the closed-cell foam has no escape of air in the cells, it has a very high rebound resilience to impact. It is just a bad product. In view of such points, by giving the shock absorbing board a special configuration,
An extremely safe shock-absorbing board with flexible shock-absorbing properties could be completed. That is, as is clear from FIGS. 1 to 3, a feature is provided in that a space 3 is formed at the same time that a straight rod-shaped piece A is interposed between two sheets 1 and 2 made of closed cell foam. It was.

The shock absorbing board B having the above-described configuration is used singly or plurally depending on the place of use, and the state in which the board B is stored in the bag-shaped sewn product C is apparent from FIG. The required performance of the bag-shaped sewn product C is scratch resistance, weather resistance, and the like, and materials having the necessary characteristics depending on the intended use are used. For example, a vinyl chloride sheet, a synthetic leather, a waterproof sheet Tough materials, such as canvas, tent cloth, etc., are used relatively often. The shape and size of the bag-shaped sewn product C are determined based on the shape and size of the shock absorbing board made of a closed-cell foam housed therein.

The bag-shaped sewn product C is provided with an optional opening / closing means 6 such as a slide fastener along a required side edge, and a shock absorbing board B is erected and fixed on the side surface with an appropriate interval. A fixing means 7 such as a stake insertion hole is provided, and a longitudinal edge can be fixed to a desired fixed object with a rope or the like, and the shock absorbing boards B can be sequentially connected according to the installation area. A connecting means 8 such as an eyelet is formed, and a handle 9 is attached to a side surface or a flat surface for facilitating transportation and installation of the shock absorbing board B.

Therefore, the impact absorbing board B is replaced with the bag-shaped sewing product C.
After being stored inside, it is wound around a required part such as a column, or is erected and fixed in a danger zone, and is used for ensuring safety.

[0021]

According to the present invention, the above-mentioned configuration is adopted, and the sheet 1 made of a closed-cell foam is used.
Between the two, a straight rod-shaped piece A such as a cylinder 4 and a prism 5 made of a closed-cell foam is interposed and bonded and integrated, so that the shock absorbing board B always has a space 3 which is an air layer, This space 3 appears as a buffering function to weaken the rebound resilience irrespective of the use of the closed-cell foam, and can exhibit a flexible shock absorbing property, disperse the force at the time of impact, and prevent bruising and whiplash etc. Injury is prevented beforehand, making it extremely safe.

Further, since the shock absorbing board B has no water retention, even if the bag-shaped sewn product C breaks and rainwater enters, there is no increase in weight, and a bad odor during storage due to decay of rainwater is prevented beforehand. Furthermore, the workability of the connection and installation and fixing of the shock absorbing boards B is extremely easy.

[Brief description of the drawings]

FIG. 1 is a plan perspective view of a shock absorbing board.

FIG. 2 is a plan perspective view of a shock absorbing board according to another embodiment.

FIG. 3 is a plan perspective view of a shock absorbing board according to another embodiment.

FIG. 4 is a rear perspective view in which the shock absorbing board is stored in a bag-shaped sewing product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet 2 Sheet 3 Space 4 Cylindrical object 5 Prismatic object 6 Opening / closing means 7 Fixing means 8 Connecting means 9 Handle A Straight bar-shaped piece B Shock absorbing board C Bag-shaped sewing product

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 64-28199 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 A63B 71 / 08

Claims (5)

(57) [Claims] 1. A sheet made of a closed-cell foam having the same diameter as that of a sheet made of a closed-cell foam so that a space (3) is provided between the sheets (1, 2) opposed to each other. An impact-absorbing board characterized in that straight rod-shaped pieces (A) each composed of a cylindrical object (4) are fixed side by side so as to be in contact with or adjacent to each other. 2. The impact according to claim 1, wherein the straight bar-shaped pieces (A) are prismatic articles (5) having the same thickness and having a prismatic shape, and a plurality of the straight pieces are fixed side by side at predetermined intervals. Absorbing board. 3. A sheet (1) comprising a closed-cell foam.
2. The impact absorbing board according to claim 1, wherein straight rod-shaped pieces (A) in which a cylindrical body (4) and a prismatic body (5) are mixed are fixed side by side regularly or irregularly. 4. The shock absorbing board according to claim 1, wherein the shock absorbing board (B) is housed in a tough bag-shaped sewing product (C) provided with an optional opening / closing means (6). 5. An optional mounting mechanism having fixing means (7) and connecting means (8) is formed outside the bag-like sewn product (C) in which the shock absorbing board (B) is stored. The shock absorbing board according to claim 4.