JP7410588B2 - competition mat - Google Patents

Description

The present invention relates to a mat for competitions, and particularly to the structure of a mat used in martial arts competitions such as judo, karate, aikido, Shorinji Kempo, and wrestling.

Generally, in martial arts competitions such as judo, karate, aikido, Shorinji Kempo, and wrestling, multiple tatami mats or mats are laid out in the competition room to form a tatami or mat floor, and the competition is held on such a floor. . For example, in judo competitions, throwing techniques such as keikage nage and stiffening techniques such as kesadagatame are performed, and the mats used in these types of competitions provide a suitable amount of rebound when the athlete is standing, and are good for walking. It is also required to have good shock absorption properties when thrown or knocked down. In the past, in judo competitions, the competition was held on tatami mats fixed with a frame as shown in Patent Document 1, but after that, mats for connecting judo competitions were developed as shown in Patent Document 2. It was done. Regarding the structure of the competition mat body, there are a plurality of mats having various laminated structures as shown in Patent Documents 3 to 6 and Non-Patent Document 1.

Japanese Patent Application Publication No. 2008-194330 JP2013-23817A Utility model registration No. 3089825 Utility Model Registration No. 3170957 Utility model registration No. 3227100 Utility model registration No. 3229987 Uenosystech Co., Ltd. All Japan Judo Federation certified tatami "Fuwatt K70/K90" product specifications (https://www.j-mat.com/product/judo/fuwatt/index.html)

The competition mats shown in the above patent documents have been repeatedly developed to have appropriate resilience and shock absorption, but all of them are effective against forces acting perpendicularly to the front and back surfaces of the mat. It is. However, another issue with competition mats is to prevent mat creep (lateral elongation) that occurs when athletes repeatedly slide their feet on the mat or perform stiffening techniques, thereby extending the service life of competition mats as much as possible. There is a request to do so.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention aims to provide a lightweight competition mat that has appropriate resilience and shock absorption properties, can prevent creep (lateral elongation), and is lightweight. .

According to the present invention, there is provided a competition mat laid on the floor of a competition room, which includes a first layer sheet body forming the front and back surfaces of the competition mat, and a center layer side of the first layer sheet body. a pair of second layer plates, a pair of third layer plates attached to the center layer side of the second layer plates, and a center attached to the center layer side of the third layer plates. A competition mat is provided which has a laminated structure comprising a layered foil material.

Further, the center layer foil material is made of metal foil.

According to another aspect of the present invention, there is provided a competition mat, wherein the center layer foil material is made of a resin plate.

Further, the competition mat of the present invention is characterized in that the second layer plate and the third layer plate are made of foamed resin plates.

Further, the competition mat of the present invention is characterized in that the second layer plate and the third layer plate have different hardnesses.

Further, in the competition mat of the present invention, uneven fitting parts are formed on four sides of the competition mat, and two corner parts in one diagonal direction are inclined at an angle of 45° with respect to the side part of the mat. The two corners in the other diagonal direction are right angle corners of 90°, and are symmetrically formed with respect to the diagonal.

Furthermore, the competition mat of the present invention is characterized in that the front and back surfaces of the competition mat are painted in different colors.

According to the present invention, it is possible to provide a mat for competitions that has appropriate resilience and shock absorption, and can prevent creep (lateral elongation) of the mat.

FIG. 1 is a sectional view of a competition mat according to a first embodiment of the present invention. FIG. 1 is a cross-sectional perspective view of a competition mat according to a first embodiment of the present invention. FIG. 2 is a cross-sectional perspective view of a competition mat according to a first modification of the first embodiment of the present invention. It is a top view of the mat for competitions concerning the second modification of the first embodiment of the present invention. FIG. 7 is a view from above of a competition mat according to a second embodiment of the present invention. It is a schematic diagram seen from above of a connected floor mat for competitions in which mats for competitions are connected to each other according to a second embodiment of the present invention. It is a figure which shows the example of use of the connected floor mat for competitions which connected the mats for competitions based on the second embodiment of this invention.

Next, a competition mat according to the present invention will be explained with reference to the drawings.

The following embodiment is an example of a competition connecting floor mat that is laid on the floor of a competition room for martial arts competitions such as judo, karate, aikido, Shorinji Kempo, and wrestling. This will be explained using an example of a competition mat used for judo.

FIG. 1 is a sectional view of a competition mat 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional perspective view of the competition mat 1 according to the first embodiment of the present invention. The competition mat 1 is generally rectangular or square. In this embodiment, the mat 1 has a planar shape of approximately 1 m square, and a plurality of mats 1 are laid so that their sides are adjacent to each other in the X and Y directions (left and right, and up and down directions) on the floor of the competition room, forming a competition mat unit. A competition floor of the desired area is constructed.

As shown in FIGS. 1 and 2, the competition mat 1 has a laminated structure. Specifically, the first layer sheet body 11A forming the surface layer of the competition mat 1, the other side when the outer surface side of the first layer sheet body 11A is one side, that is, the center layer (center layer foil material 14) side The second layer plate 12A is attached to the second layer plate 12A, the third layer plate 13A is attached to the other side of the second layer plate 12A, that is, the center layer side, and the third layer plate 13A is attached to the other side of the third layer plate 13A. A third layer plate 13B, a second layer plate 12B, and a first layer sheet 11B are arranged in order around the center layer foil 14A on the back side of the competition mat 1. It has a laminated structure of three layers, front and back, with the center layer foil material 14 in between. That is, the competition mat 1 as a whole includes first layer sheets 11A and 11B forming the front and back surfaces of the competition mat, and a pair of second layer plates 12A attached to the center layer side of the first layer sheets 11A and 11B. , 12B, a pair of third layer plates 13A, 13B attached to the center layer side of the second layer plates 12A, 12B, and a pair of third layer plates 13A, 13B attached to the center layer side of the third layer plates 13A, 13B. It is a laminated structure composed of a center layer foil material 14.

In addition, each of the first layer sheet body 11B, the second layer plate body 12B, and the third layer plate body 13B shown in FIGS. A first layer sheet body 11B forming the surface layer of the mat 1, a first layer sheet body 11B that is attached to the other side when the outer surface side of the first layer sheet body B is one side, that is, the center layer (center layer foil material 14) side. They are a two-layer plate 12B and a third-layer plate 13B attached to the other side of the second-layer plate 12B, that is, the center layer side.

The first layer sheets 11A and 11B, which form the surface layer of the competition mat, are thin sheets with a thickness of about 0.3 mm to 0.5 mm made of synthetic resin such as vinyl chloride, polyethylene, and polypropylene, and are bonded by thermocompression or adhesive. They are adhered to the second layer plate bodies 12A and 12B, respectively, by adhesive using an adhesive. Further, the outer surfaces of the first layer sheet bodies 11A and 11B are processed with fine irregularities to prevent slipping.

In this embodiment, the textured surface is embossed with a tatami pattern imitating judo tatami mats, which provides good foot movement during sliding motion and provides an appropriate anti-slip effect. This uneven processing is formed by pressing a heated uneven plate onto the surface of the first layer sheet body 11A, 11B, which is the outer plate, or by performing uneven embossing on the surface of the outer plate using a heated embossing roll. In addition, the first layer sheet members 11A and 11B can be colored in different colors, and the area where they are laid in the stadium with one side 11A coated with one color as the front is the so-called inside area, and the other color is It is possible to indicate competition areas and competition positions by using different colors, such as by making the area laid out with the other side 11B as the front as a so-called outside area.

The second layer plates 12A and 12B attached to the other side of the first layer sheets 11A and 11B are plates made of foamed synthetic resin such as polyethylene. It is made of a softer material with lower hardness than the three-layer plate. That is, the second layer plates 12A and 12B have excellent shock absorption properties and function as a layer that absorbs shock to ensure safety when a player is thrown or falls.

The third layer plates 13A and 13B attached to the other side of the second layer plates 12A and 12B are plates made of foamed synthetic resin such as polyethylene, and in this embodiment, It is made of a harder material with higher hardness than the two-layer plates 12A and 12B. That is, the third layer plates 13A and 13B have excellent vertical resilience, ensure mobility when the athlete moves in a standing position, maintain the strength of the competition mat 1 in the vertical direction, and It functions as a layer that helps prevent creep (lateral elongation).

In this embodiment, the center layer foil material 14 attached to the other side of the third layer plates 13A, 13B and sandwiched between the third layer plates 13A, 13B is a metal foil such as aluminum foil or stainless steel foil. Consisted of. The center layer foil material 14 is less deformed in the horizontal direction than the synthetic resin foam forming the second and third layers, and functions as a layer that prevents creep (lateral elongation) of the competition mat 1. Further, since the center layer foil material 14 is made of a thin metal foil, it is effective as a lightweight material for preventing creep (lateral elongation).

As mentioned above, in this embodiment, the second layer plates 12A, 12B and the third layer plates 13A, 13B are both formed of resin foam such as polyethylene foam. The third layer plates 13A and 13B are higher in height than the layer plates 12A and 12B, that is, they are made of harder plates. The hardness of the third layers 13A and 13B may vary depending on the type of competition and the level of the athlete (grade of skill, weight, etc.). The hardness for those aimed at or for standard use is 50 degrees as measured by the C type hardness tester according to JIS standard K7312, and for lightweight classes and for beginners, the hardness is softer than this, for example, the hardness measured by the C type hardness tester of the same standard. If the mat is intended for heavy or advanced users, a mat with a hardness of, for example, 60 degrees using the C type hardness tester of the same standard is used.

Note that the hardness and thickness of the third layer plates 13A, 13B and the second layer plates 12A, 12B can be arbitrarily combined, and are not limited to those shown in this embodiment. The three layers do not necessarily have to be symmetrical on the front and back sides. For example, the third layer plates 13A and 13B are prepared with a hardness of 40 to 60 degrees, and the second layer plates 12A and 12B are prepared with a hardness of 40 to 55 degrees. For beginners, the hardness of the third layer plates 13A and 13B is 40 degrees, and the hardness of the second layer plates 12A and 12B is 40 degrees, and a mat with excellent shock absorption may be provided, or for intermediate users. The third layer plates 13A and 13B may have a hardness of 40 degrees, and the second layer plates 12A and 12B may have a hardness of 55 degrees to ensure stability and enhance the creep prevention function while maintaining a certain degree of shock absorption. For advanced users, the hardness of the third layer plates 13A, 13B may be 60 degrees, and the second layer plates 12A, 12B may have a hardness of 55 degrees, in order to pursue stability and a creep prevention function.

Further, as a modification of the present embodiment, creep (lateral elongation) of the competition mat can be prevented even if the center layer foil material 14 is made of a resin plate with high hardness such as an acrylic plate instead of metal foil. can.
The center foil material 14 can also be replaced with a resin non-woven fabric sheet or a wire mesh sheet that is less deformable, such as a para-aramid fiber called Kevlar fabric (registered trademark).

FIG. 3 is a cross-sectional perspective view of a competition mat 10 according to a first modification of the first embodiment of the present invention.
As in a first modification shown in FIG. 3, the entire competition mat 10 may be covered with the first layer sheet body 101. The first layer sheet body 101 is made of the same material as the first layer sheet bodies 11A and 11B described above.

FIG. 4 is a plan view of a competition mat 20 according to a second modification of the first embodiment of the present invention. Further, as in a second modification shown in FIG. 4, the competition mat 20 may include first layer sheet bodies 201A and 201B whose surfaces are textured with a random satin pattern. The first layer sheet bodies 201A, 201B are made of the same material as the first layer sheet bodies 11A, 11B described above, except that they are textured.

To give a specific example of the overall thickness of the competition mats 1, 10, and 20 described above, it is desirable that the thickness be designed to be 15 mm to 50 mm depending on the content of the competition and the level of the athlete.

In FIG. 1, the thickness T of the third layer plates 13A and 13B is approximately 5 mm, and the thickness t of the second layer plates 12A and 12B is approximately 4 to 5 mm. Further, the thickness of the competition mat 1 can be adjusted according to the desired characteristics of the mat, and is prepared with a thickness of 4 to 15 mm. The hardness of the plate-shaped polyethylene foam (second layer plates 12A, 12B, third layer plates 13A, 13B) is identified as the particle density of polyethylene. The second layer plates 12A and 12B are integrally bonded and fixed to the third layer plates 13A and 13B, respectively, with an adhesive. For example, an appropriate amount of a rubber adhesive or a synthetic resin adhesive is applied to the surface of the board, and these are bonded and dried to be integrated. Note that the adhesive is not limited to these, and other types of adhesives can also be used.

Furthermore, the first layer sheets 11A, 11B are polyethylene films with a thickness of about 0.05 to 0.1 mm, and are integrated with the second layer plates 12A, 12B by thermocompression bonding or adhesive bonding. In the second modification shown in FIG. 4, the surfaces of the first layer sheet bodies 201A and 201B are formed with small anti-slip convex portions arranged randomly and densely. The diameter of the convex portion is approximately 0.2 to 0.5 mm, and the convex portions are formed on the film at intervals of approximately 0.2 to 0.5 mm, creating a random (no directional regularity) anti-slip surface. A convex portion is formed. The anti-slip convex portion is formed by embossing, also known as grain processing or satin finish, to form fine anti-slip irregularities. By integrally adhering and covering the first layer sheets 201A and 201B to the second layer plates 12A and 12B, the competition mat 20 is prevented from creeping and stretching due to long-term use. Ru.

Further, the competition mats 1, 10, 20 according to the present embodiment are composed of multiple layers of polyethylene foam having different strengths, including the first layer sheets 11A, 11B, 101, 201A, and 201B on the outer surface. This provides good shock absorption and prevents accidents caused by falls during grappling, foot sweeping, or throwing techniques during competitions. For example, during competitions, the ability of athletes to walk differently depending on the vertical and horizontal directions, such as the traditional tatami-omote pattern or checkered pattern, can cause accidents such as toenails getting caught in a certain direction, resulting in peeling or damage of the nails. is prevented. In addition, for example, the random (no directional regularity) small grain embossed surfaces of the first layer sheets 201A, 201B exhibit an appropriate frictional function, preventing excessive slippage or excessive stickiness, which is necessary for competitions. Transportability is ensured.

Further, according to the present embodiment, by preparing competition mats 1, 10, and 20 with varying strengths in the range of 40 degrees to 60 degrees, appropriate hardness can be achieved according to the skill level of the athlete. To be able to freely select items and easily replace them for use, to prevent head bruises due to falls even for beginners, and to eliminate problems such as excessive sinking even for heavyweight competitors. I can do it.

Further, in the above-described embodiment (particularly FIG. 4), the competition mat 20 is shown in which the first layer sheet bodies 201A and 201B having anti-slip convex portions are attached to the outer plate surface, but other embodiments of the present invention In an embodiment (not shown), a second layer plate made of polyethylene foam having a hardness different from that of the third layer plate 13A, 13B is provided on the upper and lower surfaces of the third layer plate 13A, 13B made of polyethylene foam. 12A, 12B are attached, and anti-slip convex portions are directly formed on the surfaces of the second layer plates 12A, 12B at random intervals. The anti-slip convex portions on the surfaces of the second layer plates 12A and 12B can be formed by pressing a heated uneven plate onto the surfaces of the second layer plates 12A and 12B, or by applying a heating method to the surfaces of the second layer plates 12A and 12B. Formed by applying uneven embossing using an embossing roll.

Next, a competition mat 30 according to a second embodiment of the present invention will be described with reference to FIGS. 5 to 7.

FIG. 5 is a top view of a competition mat 30 according to a second embodiment of the present invention. The mat lamination structure itself of the competition mat 30 shown in FIG. 5 is the same as the lamination structure of the competition mat 1 (see FIG. 1) according to the first embodiment, so a description thereof will be omitted.

A plurality of fitting portions 301 (301A, 301B) having an uneven shape are formed on the outer side of the four sides of the competition mat 30. As will be described later, a concave (convex) fitting portion 301A of one competition mat 30 whose sides are adjacent to each other and a corresponding convex (concave) fitting part 301A of the other competition mat 30 having the same shape. The competition mats 30 are connected to each other by tightly fitting the joint portions 301B, and thus a competition section of a predetermined size is formed. Of course, the uneven fitting portion formed on the side portion is not limited to the illustrated form.

The two corners of the rectangular competition mat 30 in the direction of one diagonal line A are cut at right angles to the diagonal line A, that is, they are inclined at 45° with respect to the outer side of the competition mat 30. These are inclined angle portions 302A and 302B. Further, the other two diagonal corners of the competition mat 30 are right-angled corners, that is, right-angled corners 303A and 303B. The two inclined angle portions 302A, 302B located in the direction of the one diagonal line A have the same shape, and the other two right angle portions 303A, 303B also have the same shape. Therefore, this mat 30 is formed symmetrically with respect to the diagonal line A.

FIG. 6 is a schematic view from above of a connected floor mat for competitions in which mats for competitions are connected to each other according to a second embodiment of the present invention. The connected floor mat 40 for competitions shown in FIG. 6 is made up of mats 30, 31, 32, 33, 34, etc. for competitions that have the same shape and are connected in a concave-convex fit. In FIG. 6, the left and right, top and bottom sides of the competition mat 30 include the right side of the competition mat 31, the left side of the competition mat 32, the lower side of the competition mat 33, and the competition mat 31, which have the same shape. The upper side of the mat 34 is arranged.

In the connected competition floor mats 40 connected in this way, the shapes of the corners of the competition mats 30, 31, 32, 33, 34, etc. are the same in the diagonal direction. Therefore, for example, only one competition mat 30 can be turned over and fitted as is to be installed. When turning the mat inside out, for example, if one diagonal line A in FIG. 2 is used as a virtual axis and the central competition mat 30 is rotated 180 degrees around the diagonal line A, the back side of the mat will appear on the front side. In this way, the competition mat 30 according to the second embodiment can be installed on the floor surface by freely selecting the front surface and the back surface. Then, the front and back surfaces of the mat can have the same surface properties (material, shape of fine irregularities), and different colors can be applied to the front and back surfaces.

FIG. 7 is a diagram showing an example of use of a connected floor mat for competitions in which mats for competitions are connected to each other according to the second embodiment of the present invention. FIG. 7 shows an example in which a connected competition floor mat 40 is constructed by connecting competition mats 30 whose front and back surfaces are colored differently. Figure 7(a) shows the composition of a karate competition mat for a kumite competition (with standing position indication) in which two athletes compete, and Figure 7(b) shows a kata competition in judo or karate in which one athlete performs kata. It has a mat composition.

In this embodiment, an example is shown in which the layers made of resin foam are a pair of second layers 12A, B and third layers 13A, B, but the number of layers made of resin foam may be increased. However, the number of layers formed of resin foam may be reduced to include only the second layers 12A and 12B, or the number of layers may be reduced, and the number of layers formed of resin foam may be arbitrary.

In addition, in this embodiment, an example is shown in which the center foil layer 14 is sandwiched and attached between the third layers 14A and 14B. A foil layer may be sandwiched or attached. In this case, creep (lateral elongation) of the competition mat can be further prevented.

1 Competition mat 11 First layer sheet body 12 Second layer plate body 13 Third layer plate body 14 Center layer foil material 20 Competition mat 201 First layer sheet body 30 Competition mat 301 Fitting portion 302 Inclined corner portion 303 Right angle part 40 Interlocking floor mat for competition

Claims (5)

A competition mat laid on the floor of a competition room, comprising a first layer sheet body forming the front and back surfaces of the competition mat, and a pair of second layers affixed to the center layer side of the first layer sheet body. Consisting of a plate, a pair of third layer plates attached to the center layer side of the second layer plate, and a center layer foil material attached to the center layer side of the third layer plate. 1. A competition mat , characterized in that the center layer foil material is made of metal foil . The competition mat according to claim 1, wherein the second layer plate and the third layer plate are made of foamed resin plates. 3. The competition mat according to claim 2 , wherein the second layer plate and the third layer plate have different hardnesses. Concave and convex fitting parts are formed on four sides of the competition mat, and two corner parts in one diagonal direction are inclined at 45 degrees with respect to the mat side part, and in the other diagonal direction 4. The competition mat according to claim 3, wherein two of the corners are right-angled corners of 90 degrees and are formed symmetrically with respect to a diagonal. 5. The competition mat according to claim 4 , wherein the front and back surfaces of the competition mat are painted in different colors.

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