JPH04122128U - rubber tiles - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the cost by downsizing the mold and press machine for rubber vulcanization molding, and to prevent the frequent occurrence of defective products due to the back layer wrapping around to the surface decorative layer side during vulcanization molding. The aim is to prevent this and reduce the number of parts required for construction on curved surfaces such as stairs. [Structure] A rubber tile 2 is prepared in which a surface decorative layer 3 and a back layer 4, both made of vulcanized rubber, are bonded together. A metal plate 5 is embedded inside the back layer 4. A flat rubber tile 2 is bent during construction, and this bent shape is held by a metal plate 5. A bent rubber tile 2 is adhered to the surface of a staircase 1.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to rubber tiles used for construction on curved surfaces such as stairs. be.

0002

[Conventional technology]

When installing rubber tiles at a construction site with steps such as stairs, use rubber tiles. It is necessary to match the shape of the curved surface. FIG. 5 is a perspective view showing an example of such a rubber tile. This rubber tile 12 is formed by laminating the surface decorative layer 3 and the back layer 14 and bonding them together. Surface decorative layer 3 and the back layer 14 are both made of vulcanized rubber, and are made of vulcanized rubber to match the shape of the curved surface of stairs, for example. It is composed of a flat plate portion 12a and a bent portion 12b.

0003 In order to manufacture such a rubber tile 12, as shown in FIG. The rectangular parallelepiped projection 16a of the upper die 16 is inserted into the space 18 for vulcanization molding, which has an approximately L-shaped cross section. form. In this vulcanization molding space 18, an unvulcanized rubber sheet for a surface decorative layer is provided. and an unvulcanized rubber sheet for the back layer are laminated and housed, and subjected to pressure and heat treatment. The rubber sheet is vulcanized to obtain a rubber sheet 12 shown in FIG. And for vulcanization molding The unvulcanized rubber sheet accommodated in the flat portion 18a of the space 18 is transferred to the flat portion 12. a, and the unvulcanized rubber sheet housed in the bent portion 18b becomes the bent portion 12b. Become.

0004

[Problem that the idea aims to solve]

However, in such a rubber tile, the upper mold 16 and the length of the bent portion 18b are Since the thickness of the lower mold 17 is larger, compared to when manufacturing flat rubber tiles, As a result, press machines for rubber vulcanization molding have become larger, and the cost of expensive molds has increased significantly. was. In addition, during vulcanization molding, the back layer 14 has a surface decoration at the bent portion 18b. This has the disadvantage that it wraps around to the layer 3 side, resulting in a high number of defective products.

[0005] Furthermore, as shown in part in FIG. 7, when constructing rubber tiles 12 on the surface of stairs 1, First, a flat rubber tile 15 is adhesively fixed to the riser 1b of the stairs 1, and then The flat plate part 12a of the rubber tile 12 is adhesively fixed to the horizontal part 1a of the stairs, and the bent part 1 2b is adhesively fixed to the rubber tile 15. For this reason, every second rubber tab is required for each step of the stairs. Since rubber tiles are required, the number of parts required for rubber tiles increases, resulting in cost reduction. The cost was high, and construction was also troublesome. Of course, the bent part 12b can be extended long and one step of stairs can be covered with one rubber tile. This is theoretically conceivable, but then the mold for vulcanization molding should be adjusted according to the length of the bent part. must be made extremely thick, making it impossible to put it into practical use.

[0006] The problem with this invention is that the thickness of the mold for vulcanization molding can be small, and This prevents the frequent occurrence of defective products and reduces the number of parts required when constructing stairs, etc. Our goal is to provide rubber tiles that can.

[0007]

[Means to solve the problem]

The present invention includes a surface decorative layer made of vulcanized rubber; A back layer made of combined vulcanized rubber; a metal plate buried inside this back layer, etc. This relates to a flat rubber tile consisting of:

[0008]

【Example】

FIG. 2 is a cross-sectional view showing the state of the rubber tile according to the embodiment of the present invention before construction, and FIG. is a perspective view of the rubber tile in Figure 2, and Figure 4 is a vulcanization process for producing such a rubber tile. It is a sectional view showing a molding die.

[0009] A surface decorative layer 3 is provided on the surface side of this rubber tile 2, and a surface decorative layer 3 is provided on the lower side of the surface decorative layer 3. A back layer 4 is provided on the top. A metal plate 5 is embedded inside the back layer 4. metal plate The end face of 5 is not exposed to the end face 2a of the rubber tile 2.

0010 To manufacture such a rubber tile 2, a mold as shown in FIG. 4 is used. this A flat plate-shaped concave portion is formed in the lower mold 7 of the mold, and a flat plate-shaped upper mold 6 is provided on the lower mold 7. be placed. The recessed portion of the lower mold 7 becomes a flat plate-shaped vulcanization molding space 8.

[0011] An unvulcanized rubber sheet that becomes the surface decorative layer 3 after vulcanization, and an unvulcanized rubber sheet that becomes the back layer 4 after vulcanization. A vulcanized rubber sheet is prepared. In this case, use the corresponding rubber The composition is separately kneaded and formed into a sheet. The rubber used here is natural rubber, styrene-butadiene rubber, butadiene rubber, nitrile rubber, ethylene rubber Examples include lopyrene rubber and chlorosulfonated polyethylene. These types of rubber may be used, or two or more types may be used in combination. The large size sheet obtained in this way Cut the sheet to the specified size. Then, in the vulcanization molding space 8 shown in FIG. Prepare the layer sheet, the back layer sheet, the metal plate 5, and the back layer sheet in sequence. The rubber tile 2 shown in FIG. 2 is obtained by applying pressure and heat treatment at, for example, 150° C. for 15 minutes.

0012 The thickness of the metal plate 5 is preferably about 0.3 to 1.0 mm. In addition, metal plate 5 In order to improve the adhesion between the metal plate and the rubber, we created many through holes and modified the surface of the metal plate. Preferably, it is chemically treated or primed. The material of the metal plate 5 is iron. , aluminum, brass, bronze, etc. are preferable.

[0013] FIG. 1 is a partial cross-sectional view showing the state in which such rubber tiles 2 are installed on stairs. . Before installing each rubber tile 2, first bend it to match the surface shape of the stairs 1. . That is, force is applied to the rubber tile 2 to plastically deform the metal plate 5. In this state, each In the rubber tile 2, the surface decorative layer 3 and the back layer 4 try to restore the original shape. However, this restoring force is suppressed by the metal plate 5 and the rubber tile 2 The shape is maintained by the metal plate 5. Then, it was bent into an almost Z-shape like this. Glue the rubber tile 2 to the horizontal part 1a and riser part 1b of the stairs 1, and The surfaces 2a are glued together to cover the surface of the stairs 1.

[0014] According to this embodiment, since the rubber tile 2 has a flat plate shape, the vulcanization molding space 8 is The shape can be made into a flat plate shape. Therefore, the thickness of the vulcanization mold is small. As a result, the cost of molds and press machines for rubber vulcanization molding can be reduced. Ru. In addition, since the vulcanization molding space 8 is not bent, the back layer is formed at this bent part. This prevents the occurrence of a large number of defective products due to the particles going around to the surface decorative layer side.

[0015] Moreover, since the metal plate 5 is embedded inside the back layer 4 of the rubber tile 2, Even if the rubber tile 2 is bent to match the surface shape of the stairs 1, the bent shape The shape is maintained by the metal plate 5. Therefore, it can be easily constructed to suit curved surfaces such as stairs. , and does not require an auxiliary flat rubber tile 15 (see Fig. 7). Therefore, the number of parts required for construction on curved surfaces is reduced. As a result, the construction period is shortened. In this way, the finished state after construction can be made beautiful, and construction costs can be lowered.

[0016] The planar shape of the rubber tile according to this invention can be changed in various ways to suit the construction site. , the planar shape of the metal plate 5 can also be changed accordingly. 2 pieces in one rubber tile The above metal plates may be buried.

[0017]

[Effect of the idea]

According to the present invention, as mentioned above, since the rubber tile is made into a flat plate, it can be vulcanized and molded. The vulcanization molding space of the mold can also be flat. Therefore, mold cost, The cost of a press machine for vulcanization molding can be reduced. Also, at this bend Therefore, the back layer does not wrap around to the front decorative layer side, which prevents the occurrence of many defective products.

[0018] Moreover, because the metal plate is embedded inside the back layer of the flat rubber tile, Even if the rubber tile is bent, its bent shape is maintained by the metal plate. Therefore , can be easily constructed to fit curved surfaces such as stairs, and can be used as a supplementary rubber tile. Since it is not necessary, the number of parts required for construction on curved surfaces is reduced. As a result, The construction period can be shortened, the finished state after construction can be made beautiful, and construction costs can be reduced. Can be made lower.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing a state in which a rubber tile according to an embodiment of the present invention is installed on a staircase.

FIG. 2 is a sectional view showing a flat rubber tile according to an embodiment of the present invention.

FIG. 3 is a perspective view of the rubber tile of FIG. 2;

4 is a sectional view showing a vulcanization mold for manufacturing the rubber tile of FIG. 2. FIG.

FIG. 5 is a perspective view showing a conventional rubber tile.

6 is a sectional view showing a vulcanization mold for manufacturing the rubber tile of FIG. 5. FIG.

FIG. 7 is a partial sectional view showing the rubber tile of FIG. 5 installed on a staircase.

[Explanation of symbols]

1 stairs 2,12 Rubber tiles 3 Surface makeup layer 4,14 Back layer 5 Metal plate 8,18 Space for vulcanization molding

Claims (1)

[Scope of utility model registration request] Claim 1: A flat plate consisting of a surface decorative layer made of vulcanized rubber; a back layer made of vulcanized rubber laminated and bonded to this surface decorative layer; and a metal plate embedded inside this back layer. shaped rubber tiles.