JPH04108572U - railroad crossing board - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding the take-off boards used in vaulting, vaulting, and other mat competitions, this is a take-off board in which an elastic body is sandwiched between the spring board and the tip of the tread where they meet. Accordingly, the elastic body is designed to be extremely easy to attach. [Structure] The bottom plates 1, 2 and the tread plate 3, which are positioned parallel to each other and symmetrically, are connected and fixed at their base ends, and a spring is installed between the bottom plates 1, 2 and the tread plate 3. Board 5
By cutting slits 6a at predetermined intervals so that the overall length matches the width of the front edge of the spring plate 5, the level crossing board is provided with A takeoff plate characterized in that an elastic body 6 formed by forming a required number of continuous block-shaped elastic bodies 6b is sandwiched between the front end mating edge portion of the tread plate 3 and the spring plate 5.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a stepping board used in vaulting, vaulting, and other mat competitions. Regarding this, an elastic body is inserted between the ends of the spring plate and the tread plate. This relates to a railroad crossing board.

0002

[Conventional technology]

As a conventional level crossing board of this type, there is a "body board" published in Japanese Patent Publication No. 2-55056. There is a "training level crossing board". This is a system that combines multiple cylindrical elastic bodies into spring plates. It was constructed so that it was interposed in a line with a predetermined interval between the ends of the tread and the matching part of the tread. It is something.

0003 In addition to the above, there are "level crossing boards" published in Publication No. 2-43399. There is. This method uses multiple elastic blocks in the shape of a rectangular parallelepiped to form spring plates and tread plates. It is constructed so that it can be inserted and attached at a predetermined interval to the matching portion of the tip.

0004

[Problem that the idea aims to solve]

Conventional railroad crossing boards as described above have a spring plate interposed between the tip of the spring plate and the tread plate. Each elastic body is constructed so that multiple elastic bodies are arranged in a line and interposed between them. As a result, each elastic body must be installed individually. , the work was inevitably complicated.

[0005] By the way, with the intention of eliminating the complexity of the installation work as described above, the length of the elastic body It is also possible to make it block-shaped with a length that matches the width of the tread, but In this case, the force applied to the treadle is absorbed by the entire elastic body, so the force applied to the tread is absorbed by the elastic body. The deformation of the elastic body extends over the entire elastic body, and the reaction force becomes uneven, producing a good reaction effect. It is something that cannot be done.

[0006]

[Means to solve the problem]

The present invention consists of bottom plates (1, 2) that are positioned parallel to each other and symmetrically, and a tread plate. (3) are connected and fixed at each other's base ends, and furthermore, the said floor plates (1, 2) and In a level crossing board with a spring board (5) provided between the board (3), the entire length is the same as that of the spring board (5). ) Cut slits (6a) with dimensions that match the width of the front edge of the By setting a required number of block-shaped elastic blocks that are connected on either the upper or lower surface. The elastic body (6) forming a single body (6b) is connected to the above-mentioned tread plate (3) and spring plate (5). A railroad crossing board characterized in that it is configured such that it is sandwiched between the front end mating edge portion of the board. This is related.

[0007]

【Example】

In the figure, 1 and 2 are bottom plates, which are located parallel to each other and symmetrically. It is shown.

[0008] 3 is a footboard, the rear edge of which is connected and fixed to the rear ends of the footboards 1 and 2 described above. be. In addition, an elastic sheet material 4 made of an appropriate material is pasted on the top surface of the step board 3. It has been done.

[0009] Reference numeral 5 denotes a spring plate, which covers the required parts of the tread plates 1 and 2 mentioned above and the tip of the tread plate 3. It is located between. The tip of the spring plate 5 is located at the tip of the treadle 3. An elastic body 6 having the configuration described below is interposed and connected to the edge. It is tied. This provides good repulsion and impact against the force applied to the footboard 3. It is constructed to provide shock absorption.

0010 The elastic body 6 shown in FIGS. 3 and 4 is made of rubber material, soft synthetic resin material, or It is made of these foams. The entire length of the elastic body 6 is the same as that of the spring plate 5. It has dimensions that match the width of the leading edge. 6a is provided at a predetermined interval on the lower surface of the elastic body 6. Based on the cutting of the slit, the elastic body 6 is It is constructed so that a required number of block-like elastic bodies 6b are formed in a row on the upper surface. be. By providing such a slit 6a, the impact applied through the tread plate 3 can be reduced. The deformation of the elastic body 6 based on Therefore, based on the irregular deformation of the entire elastic body 6 that would occur if this was not provided, This prevents problems such as deterioration of repulsion and shock absorption properties.

[0011] In addition, although the block-shaped elastic body unit 6b is connected in a continuous manner, as described above, the top side In addition to the continuous arrangement at the bottom, the arrangement may be such that the arrangement is continuous at the lower surface side. That is, The configuration may be such that FIGS. 3 and 4 are turned upside down. this is The same applies to the embodiments shown in FIGS. 5 to 7 described below.

0012 The elastic body 6 shown in FIGS. 5 and 6 hangs down from the upper surface portion of each block-shaped elastic body unit 6b. A bottomed cavity 6c is directly formed therein. Due to this, each block-shaped bullet The flexibility of deformation of the single body 6b is further improved, and the repulsion and shock absorption properties are further improved. It will be improved.

[0013] FIG. 7 shows the elastic body 6 having the form shown in FIGS. 5 and 6, and each block-shaped elastic body alone. This is an example in which the cavity formed in 6b is a through-hole cavity 6d instead of a bottomed one. be.

[0014]

[Effect of the idea]

The present invention has dimensions such that the overall length matches the width of the front edge of the spring plate 5 and a predetermined interval. By cutting the slits 6a while keeping the The elastic body 6 made of Therefore, the deformation of the elastic body 6 due to the impact applied via the footboard 3 is as follows. It is dispersed in the block-like elastic body 6b and causes local deformation, so it is not necessary to provide this. The repulsion and shock absorption properties are improved due to the irregular deformation of the entire elastic body 6 when the elastic body 6 is Things like deterioration are prevented. And, the block-shaped elastic body single body 6b is , are configured so that they are continuous on either the top or bottom surface, so it is not possible to This problem occurs when a plurality of vertical elastic bodies are installed in a line. Problems such as the complexity of the work of attaching the elastic body are completely eliminated.

[Brief explanation of drawings]

FIG. 1 is a front view of a railroad crossing board according to the present invention.

FIG. 2 is a longitudinal sectional side view of a railroad crossing board according to the present invention.

FIG. 3 is a perspective view showing an example of an elastic body.

FIG. 4 is an enlarged longitudinal cross-sectional view of the same as above.

FIG. 5 is a perspective view showing another example of the elastic body.

FIG. 6 is an enlarged vertical cross-sectional view of the same as above.

FIG. 7 is an enlarged vertical cross-sectional view showing another embodiment of the elastic body.

[Explanation of symbols]

1 Bottom plate 2 Bottom plate 3 Treadboard 4 Elastic sheet material 5 Spring plate 6 Elastic body 6a slit 6b Single block-shaped elastic body 6c Bottomed cavity 6d Puncture-shaped cavity

Claims (3)

[Scope of utility model registration request] Claim 1: A bottom plate (1, 2) and a tread plate (3), which are positioned parallel to each other and symmetrically, are connected and fixed at their base ends, and further, the bottom plate (1, 2) is and a treadle board (3), in which a spring board (5) is provided between the board and the tread board (3), the entire length of which matches the width of the front edge of the spring board (5), and slits ( 6a) to form a required number of block-shaped elastic bodies (6b) connected on either the upper or lower surface, the elastic body (6) is attached to the tread plate (3) and the spring plate (6a). 5) A railroad crossing board characterized in that it is configured to be sandwiched between the front end mating edge portion of item 5). 2. The railroad crossing board according to claim 1, wherein a bottomed cavity (6c) is vertically formed in each block-shaped elastic body (6b). 3. The railroad crossing board according to claim 1, wherein the hollow portion formed in each block-shaped elastic body unit (6b) is a punch-through hollow portion (6d).