JPH0352371Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the field of structure of courts for sports facilities.

(Prior art) The pine-like material laid in the conventional construction method for sports facility courts is made of coarse rubber material, fine rubber material, or coarse material and fine rubber material. Mixed pine-like materials were used, but because the connecting surfaces of the pine-like materials were monotonous and straight, the connecting surfaces could separate due to the influence of temperature changes, rainwater, dust, etc. There were many defects, such as interfering with sports for athletes, shortening the lifespan of the court itself, and speeding up the cycle of repairs and new construction.

In response to this, the present inventor proposed a structure in which the peripheral edge of the coating material was made into a wave-like shape and adjacent uneven portions were fitted into each other as an earlier application (Utility Model Application No. 71834/1983).

(Problems to be solved by the present invention) However, the above-mentioned invention (Utility Model Application Publication No. 59-71834)
This had the disadvantage that the wavy-shaped boundary lines at the joints of each coat material were clearly visible, causing misunderstandings between the lines, etc., and being an eyesore for those competing on the court. .

In addition, in order to reduce the impact force applied to each part of the athlete's body, if a coating material with high elasticity is used, the degree of expansion and contraction will be large depending on the elasticity, and although there is no problem especially when it expands, it will contract a lot. In some cases, gaps were created at the joints.

Furthermore, depending on the type of competition, it is necessary to adjust the elastic force of the court as appropriate.

Therefore, the present invention has been improved to eliminate the above-mentioned drawbacks.

(Means for Solving the Problems) The present invention is made of a rubber chip that has alternating wavy-shaped recesses and wavy-shaped protrusions on the peripheral edge of each side of a quadrilateral shape, and has a uniform thickness. A coating material is formed, and the wavy-shaped convex portions of the adjacent coating material are alternately fitted into the wavy-shaped concave portions of the coating material, and the wavy-shaped concave portions are alternately fitted into the wavy-shaped convex portions of the other coating material. In the structure of a court for sports facilities, in which each coating material is laid down so that there are no gaps between the contact surfaces of the uneven parts of each corrugated shape, the lower layer is made of fine-grained rubber chips and has a uniform thickness. The structure of the court for sports facilities is characterized in that an upper layer of uniform thickness is formed from coarse-grained rubber chips above the lower layer.

(Example) Reference numeral 1 denotes a lower layer consisting of chips made of a rubber material having uniform thickness and fine grain elasticity, constituting the coating material a of the present invention. Reference numeral 2 denotes an upper layer of chips made of a rubber material having a uniform thickness and coarse-grained elasticity relative to the surface of the layer 1. Both layers 1 and 2 can be made by stacking separate layers and adhering them so that they do not separate, or by forming the lower layer 1 in advance, and after forming the lower layer 1, place coarse granular rubber that will become the upper layer 2 above the lower layer 1. Chips made of materials are layered to a uniform thickness and formed into a layered shape through a heat treatment process. After the formation, the outer peripheral edge portion is formed by forming concave portions 3 and convex portions 4 alternately and continuously in a corrugated shape as shown in the drawings, thereby forming the coating material a. In particular, when forming the concave portion 3 and the convex portion 4, only the convex portion 4 side is formed to be slightly larger than the curved surface of the concave portion 3 into which it is fitted. The above is the structure of coating material a.

Note that the color is not particularly limited. Reference numeral 5 denotes a bonding surface formed when each coating material a was connected, 6 a base material layer, and 7 a bonding surface of each coating material of coating b that was conventionally applied.

(Function) Next, to explain the function of the present invention, each coat material a formed as described above is aligned with a predetermined coat etc. on the base material layer 6, and the recesses forming each adjacent coat material a are formed. 3 and the convex part 4 are fitted together in the same manner, since the convex part 4 side is formed to be slightly larger than the concave part 3 side, when both parts are fitted respectively, the joint surfaces maintain a pressed state. They are mated.

As described above, the coat constructed by spreading each coat material a is different from conventional coats in that the joint surface 5 of the coat material a has a shape in which concave portions 3 and convex portions 4 are alternately continuous. Even if the color changes, it is canceled out by the shape of the coarse rubber chips in the upper layer and becomes unclear. Then, as a coat, a ground pattern is formed on one side.

Furthermore, since the coating material is formed by laminating a layer consisting of coarse-grained rubber chips and a layer consisting of fine-grained rubber chips with a uniform thickness, the two layers can be turned over as needed to utilize the difference in elasticity. A coat can be constructed.

(Effects) (1) The coating of this invention has a uniform upper layer thickness,
Moreover, since it is made of coarse-grained rubber chips, even if the concave and convex parts are joined, only the shape of the coarse-grained rubber chips will be visible on the coating surface, so the wave-like shape that appears at the joints of each coating material. This has the advantage of making competitions extremely easy, as pedestrians and competitors can watch games without being aware of the joints at all.

(2) Also, in the present invention, the coating material is formed in a layered manner, with a layer consisting of coarse-grained rubber chips and a layer consisting of fine-grained rubber chips, each having a uniform thickness.
It has the advantage that both layers can be turned over and used differently depending on the competition.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the structure of the court for sports facilities according to the present invention, Figure 2 is a plan view of the same, Figure 3 is an enlarged partially cutaway plan view of the main parts, and Figure 4 is the court material before construction. FIG. 5 is a plan view of a conventional construction coat, FIG. 6 is a vertical sectional view of the coat in FIG. 5, and FIG. 7 is a second embodiment of the coat in FIG. 5. FIG. a... Coating material, 1... Lower layer, 2... Upper layer, 3... Concave portion, 4... Convex portion, 5... Joint surface, 6
... Base material layer, 7... Joint surface.

Claims (1)

[Claims for Utility Model Registration] Forming a coating material made of rubber chips having alternating wavy-shaped recesses and wavy-shaped protrusions on the peripheral edge of each side of a quadrilateral shape and having a uniform thickness. , the wavy-shaped convex portions of the adjacent coating material fit into the wavy-shaped concave portions of the coating material, and the wavy-shaped concave portions fit into the wavy-shaped convex portions of the other coating material alternately to form each wavy shape. In the structure of a court for sports facilities, in which each coating material is spread over the contact surface of the uneven parts, a lower layer with a uniform thickness is formed using fine-grained rubber chips. The structure of a court for a sports facility is characterized by forming an upper layer of uniform thickness with coarse-grained rubber chips above the coat.