JPS588265Y2 - railroad crossing board - Google Patents
railroad crossing boardInfo
- Publication number
- JPS588265Y2 JPS588265Y2 JP1980119591U JP11959180U JPS588265Y2 JP S588265 Y2 JPS588265 Y2 JP S588265Y2 JP 1980119591 U JP1980119591 U JP 1980119591U JP 11959180 U JP11959180 U JP 11959180U JP S588265 Y2 JPS588265 Y2 JP S588265Y2
- Authority
- JP
- Japan
- Prior art keywords
- board
- leaf spring
- railroad crossing
- tread
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Road Paving Structures (AREA)
Description
【考案の詳細な説明】
本考案は踏切板に係り、更に詳しくは跳び箱、跳馬等の
室内体操競技用の踏切板に関するものである。[Detailed Description of the Invention] The present invention relates to a take-off board, and more particularly to a take-off board for indoor gymnastics events such as vaulting and vaulting.
体操競技に用いられる踏切板には、助走を伴って選手が
跳び乗ると最大５００〜６００ ｋｇの荷重が加わる。A maximum load of 500 to 600 kg is applied to the take-off board used in gymnastics competitions when an athlete jumps on the board during a run-up.
この為踏切板はこのような荷重に耐えると共に充分な弾
力をもってこれに反発する弾性を備えていなければなら
ない。For this reason, the board must be able to withstand such a load and have sufficient elasticity to rebound against it.
従来の踏切板においては、踏板に弾力を与えるために該
踏板を支える板バネを用いており、その材料として鋼板
等を用いていた。In conventional level crossing boards, a leaf spring is used to support the tread board in order to give elasticity to the tread board, and a steel plate or the like is used as the material thereof.
ところが板バネとして鋼板等の金属板を用いた踏切板に
あっては、初期に充分な弾力と荷重に対する抵抗力があ
るが、重量が重くなり、長期間使用している内に、金属
製の板バネが充分な弾力を持たないように変形してしま
う不都合があった。However, railroad crossing boards that use metal plates such as steel plates as leaf springs initially have sufficient elasticity and resistance to load, but they become heavier and, after long-term use, the metal plates deteriorate. There was an inconvenience that the leaf spring deformed without having sufficient elasticity.
本考案は金属製の板バネを用いることなく、荷重に対す
る抵抗力と充分な弾力を備えた踏切板を提供するもので
ある。The present invention provides a railroad crossing board that has load resistance and sufficient elasticity without using metal leaf springs.
以下、図面に示す実施例と共に本考案を詳細に説明する
。Hereinafter, the present invention will be explained in detail together with embodiments shown in the drawings.
第１図以下は本考案の一実施例を示し、図において、全
体を符号１で示す踏切板は、基板２と踏板３とからなり
、相互間には一端を踏板３の下面に、他端を基板２の上
面に固定した板バネ７が配設されるもので、本考案の踏
切板においては、この板バネ７の構造に特長がある。FIG. 1 and subsequent figures show one embodiment of the present invention. In the figures, a railroad crossing board, designated as a whole by reference numeral 1, consists of a base plate 2 and a treadboard 3, with one end on the underside of the treadboard 3 and the other end A plate spring 7 fixed to the upper surface of the base plate 2 is disposed, and the structure of the plate spring 7 is a feature of the railroad crossing board of the present invention.
第３図〜第５図を参照して板バネ７の構造を詳しく説明
すると、この板バネ７はＦＲＰ（ガラス繊維強化プラス
チック）から一体成形されておりその先端は踏板３の先
端下面にネジ８によって固定されており、その後端は基
板２の上面に対してネジ９によって固定されている。The structure of the leaf spring 7 will be explained in detail with reference to FIGS. 3 to 5. The leaf spring 7 is integrally molded from FRP (glass fiber reinforced plastic), and its tip is attached to the bottom surface of the tip of the tread plate 3 by a screw 8. The rear end is fixed to the upper surface of the substrate 2 by a screw 9.
そしてこの板バネ７は踏板３とほぼ同一の幅を有し、左
右の基板２，２間にわたって配置されている。This leaf spring 7 has approximately the same width as the footboard 3, and is arranged between the left and right boards 2, 2.
上記板バネ７には第３図に示す如く、踏切板１の軸線方
向と平行に形成した上向き凸部１０と、下向き凹部１１
を位置をずらせて交互に設けている。As shown in FIG. 3, the leaf spring 7 has an upward convex portion 10 formed parallel to the axial direction of the railroad crossing board 1, and a downward concave portion 11.
are arranged alternately at different positions.
そして、この板バネ７は第４図に示すところから明らか
なように、予め所定のわん曲した断面形状に成形されて
いる。As is clear from FIG. 4, this leaf spring 7 is previously formed into a predetermined curved cross-sectional shape.
前記上向き凸部１０及び下向き凹部１１はこの板バネの
強度を出す為のもので、その形状や数は第３図及び第４
図に示したものに限定されることはない。The upward convex portion 10 and the downward concave portion 11 are for increasing the strength of this leaf spring, and their shape and number are as shown in Figures 3 and 4.
It is not limited to what is shown in the figure.
板バネ７は以上のように形成されているため、第２図に
示すように踏板３と基板２との間にこれを張架した時に
は、踏板３の先端部は板バネ７０弾力により所定距離、
例えば１５０ ｍｍ程度踏板３の先端部が床面から上昇
した状態に保たれる。Since the leaf spring 7 is formed as described above, when it is stretched between the tread plate 3 and the base plate 2 as shown in FIG. ,
For example, the tip of the footboard 3 is kept elevated from the floor by about 150 mm.
なお、第１図、第２図においては板バネ７は踏板３と基
板２との両方に固定された構造を採用しているが、例え
ば第５図に示すように、基板２側を固定せずに自由端と
しておき、板バネ７がたわむ度に基板２上を摺動する構
造としてもよい。1 and 2, the leaf spring 7 is fixed to both the footboard 3 and the base plate 2, but as shown in FIG. It is also possible to have a structure in which the plate spring 7 is left as a free end and slides on the substrate 2 every time the plate spring 7 is bent.
又、板バネ７と基板２とを固定しておき、板バネ７と踏
板３との間を固定せずに自由にしておき、板バネ７がた
わむ度にその先端が踏板３に対して摺動できる構造を採
用してもよい。Also, the leaf spring 7 and the base plate 2 are fixed, and the space between the leaf spring 7 and the tread plate 3 is left unfixed, so that each time the leaf spring 7 bends, its tip slides against the tread plate 3. A movable structure may be adopted.
本考案によると、板バネ７は上記の構成としたので選手
の跳び乗りによる大きな荷重も、板バネ７によって充分
に吸収することができ、更に選手が跳び上る時において
も板バネ７のもつ優れた弾力により、復元し、充分な跳
躍効果を与えることができる。According to the present invention, since the leaf spring 7 has the above-mentioned structure, the leaf spring 7 can sufficiently absorb the large load caused by the jump of the athlete. The elasticity allows the ball to recover and provide a sufficient jumping effect.
又、板バネ７はＦＲＰから一体成形されているため、そ
の重量は極めて軽く、踏切板１の取扱い時において、そ
の取扱いは極めて容易であり、長期間にわたる使用にも
充分に耐えることができる。Further, since the leaf spring 7 is integrally molded from FRP, its weight is extremely light, and when handling the crossing board 1, it is extremely easy to handle, and it can sufficiently withstand long-term use.
なお、図において符号１２で示すものはクッションゴム
で、板バネ７と踏板３の間及び板バネ７と基板２の間に
配置されており、板バネ７と踏板３及び基板２との間の
接触部を保護し弾力を与えている。In addition, what is indicated by the reference numeral 12 in the figure is cushion rubber, which is arranged between the leaf spring 7 and the tread plate 3 and between the leaf spring 7 and the board 2. It protects the contact area and gives it elasticity.
また、図示例において、基板２は上側に凸となるように
ゆるやかにわん曲して形成されており、アビトン（商品
名）等のガラス繊維強化プラスチック（以下ＦＲＰと言
う）板と他の材質の板を複数枚積層して細長い長方形状
に形成されているこの基板２は左右一対配置されており
、その両端部の下面には、ゴム等の弾性材から戒るすべ
り止め４がそれぞ゛れ固定されている。Further, in the illustrated example, the substrate 2 is formed to be gently curved so as to be convex upward, and is made of a glass fiber reinforced plastic (hereinafter referred to as FRP) plate such as Aviton (trade name) and other materials. This board 2, which is formed into a long and narrow rectangular shape by laminating a plurality of plates, is arranged in pairs on the left and right, and anti-slip 4 made of an elastic material such as rubber is installed on the lower surface of both ends. Fixed.
一方、前記踏板３はアビトンなどのＦＲＰ板を間ち挾み
、その上下をブナ等の板により挾んで積層したもので、
その後端は基板２の後端にネジ５によって固定されてい
る。On the other hand, the step board 3 is made by sandwiching FRP boards such as Aviton, and sandwiching the upper and lower sides with boards such as beech.
The rear end is fixed to the rear end of the board 2 with a screw 5.
踏板３の上面には接着剤によってカーペット６が固定さ
れている。A carpet 6 is fixed to the upper surface of the footboard 3 with adhesive.
以上は実施例についての説明であるが、本考案の要旨は
登録請求の範囲に記載する通りである。The above is a description of the embodiments, but the gist of the present invention is as described in the registered claims.
しかして、本考案によれば、踏切板の基板と踏板の自由
端との間を連結して配置される板バネをＦＲＰにより所
定の形状に一体成形しておき、これを基板と踏板の中間
に配設する構造を採用している為、従来の金属製の板バ
ネを用いたものに比較し強度の弾力も優れており、長期
間の使用に耐え、しかも重量が軽い為、踏切板の操作時
において、極めて容易に移動させることができ、今まで
にない優れた踏切板を提供することができる。According to the present invention, the leaf spring which is connected between the board of the board and the free end of the board is integrally molded into a predetermined shape using FRP, and this is inserted between the board and the board. Because it adopts a structure in which the board is installed on the board, it has superior strength and elasticity compared to conventional metal leaf springs, can withstand long-term use, and is light in weight. During operation, it can be moved extremely easily and an unprecedented level crossing board can be provided.
第１図〜第５図は本考案の一実施例を示すもので、第１
図は全体斜視図、第２図は側面図、第３図は板バネの平
面図、第４図は板バネの側面図、第５図は第３図Ａ−Ａ
′線に沿う拡大断面図、第６図は本考案の他の実施例を
説明する側面図である。
１・・・・・・踏切板、２・・・・・・基板、３・・・
・・・踏板、４・・・・・・すべり止め、５，８．９・
・・・・・ネジ、６・・・・・・カーペット、７・・・
・・・板バネ、１０・・・・・・凸部、１１・・・・・
・凹部、１２・・・・・・クッションゴム。Figures 1 to 5 show one embodiment of the present invention.
The figure is an overall perspective view, Figure 2 is a side view, Figure 3 is a plan view of the leaf spring, Figure 4 is a side view of the leaf spring, and Figure 5 is Figure 3A-A.
FIG. 6 is an enlarged sectional view taken along the line '' and a side view illustrating another embodiment of the present invention. 1... Level crossing board, 2... Board, 3...
...Treadboard, 4...Non-slip, 5,8.9.
...Screw, 6...Carpet, 7...
...Plate spring, 10...Protrusion, 11...
・Concavity, 12...Cushion rubber.
Claims (1)
を固着し、前記踏板と基板の間にガラス繊維強化プラス
チックからなる板バネを配設してなる踏切板において、
前記板バネには、踏切板の軸線方向と平行に補強用の上
向き凸部と下向き凹部を位置をずらせて交互に形成した
ことを特徴とする踏切板。A level crossing board in which an end of a board and a rear end of a tread on which a carpet is arranged on the upper surface are fixed, and a leaf spring made of glass fiber reinforced plastic is disposed between the tread and the board,
A take-off board characterized in that the leaf spring is formed with reinforcing upward protrusions and downward recesses that are alternately arranged in parallel with the axial direction of the take-off board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980119591U JPS588265Y2 (en) | 1980-08-22 | 1980-08-22 | railroad crossing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980119591U JPS588265Y2 (en) | 1980-08-22 | 1980-08-22 | railroad crossing board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5742851U JPS5742851U (en) | 1982-03-09 |
| JPS588265Y2 true JPS588265Y2 (en) | 1983-02-15 |
Family
ID=29480249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980119591U Expired JPS588265Y2 (en) | 1980-08-22 | 1980-08-22 | railroad crossing board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS588265Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6115010B2 (en) * | 2012-02-17 | 2017-04-19 | 花王株式会社 | Spacer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4956734A (en) * | 1972-07-14 | 1974-06-01 | ||
| JPS5420535U (en) * | 1977-07-13 | 1979-02-09 |
-
1980
- 1980-08-22 JP JP1980119591U patent/JPS588265Y2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4956734A (en) * | 1972-07-14 | 1974-06-01 | ||
| JPS5420535U (en) * | 1977-07-13 | 1979-02-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5742851U (en) | 1982-03-09 |
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