JPH0341462U - - Google Patents
Info
- Publication number
- JPH0341462U JPH0341462U JP10330189U JP10330189U JPH0341462U JP H0341462 U JPH0341462 U JP H0341462U JP 10330189 U JP10330189 U JP 10330189U JP 10330189 U JP10330189 U JP 10330189U JP H0341462 U JPH0341462 U JP H0341462U
- Authority
- JP
- Japan
- Prior art keywords
- ball
- state
- view
- molecular weight
- showing
- 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.)
- Pending
Links
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- 229920006311 Urethane elastomer Polymers 0.000 claims 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000005056 polyisocyanate Substances 0.000 claims 1
- 229920001228 polyisocyanate Polymers 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 claims 1
- 229920005862 polyol Polymers 0.000 claims 1
- 150000003077 polyols Chemical class 0.000 claims 1
- 229920002635 polyurethane Polymers 0.000 claims 1
- 239000004814 polyurethane Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Landscapes
- Floor Finish (AREA)
Description
第１図は競技用二重ボールの作用を示すもので
、第１ａ図は競技用二重ボールが一定の高さの位
置にある状態を示す正面図、第１ｂ図は落下着地
した競技用二重ボールが落下荷重の衝撃を食止め
吸収した状態を示す正面図、第１ｃ図は第１ｂ図
の状態から一定の高さに跳ね上つた状態を示す正
面図、第２図は従来のボールの作用を示すもので
、第２ａ図は従来のボールが一定の高さの位置に
ある状態を示す正面図、第２ｂ図は落下着地して
ボールの球心が安定した位置にある状態を示す正
面図、第２ｃ図は落下着地したボールが、落下荷
重の衝撃を吸収する事は殆どない状態を示す正面
図、第３図は競技用二重ボールを床面に静止した
状態で、自重により歪んだ状態の正面図、第４図
は従来のボールが殆ど歪みはなく、床面との設置
は殆ど点と考えてよい程である状態を示す正面図
、第５図はゲートボール競技において、ボールを
叩く寸前の状態、ボールを叩いた状態、叩かれた
ボールが衝撃を充分に吸収して回転に移る状態を
順に示す側面図、第６図は第５図の平面図、第７
図は競技用二重ボールの作用を示すもので、転が
る寸前の状態、転がつている状態で床面に対し自
重の分だけ歪み平面を形成しつつある状態、そし
て、床面を離れたら速やかに球形を形成して走行
している状態を順に示す側面図、第８図は競技用
二重ボールの断面図である。
１……競技用二重ボール、１Ａ……球心、１Ｂ
……中芯、１Ｃ……外皮。
Figure 1 shows the action of the competition double ball. Figure 1a is a front view showing the competition double ball at a certain height, and Figure 1b is the competition double ball that has fallen and landed. A front view showing the state in which the heavy ball has stopped and absorbed the impact of the falling load, Figure 1c is a front view showing the state in which it has jumped up to a certain height from the state in Figure 1b, and Figure 2 is a front view showing the state in which the heavy ball has stopped and absorbed the impact of the falling load. Figure 2a is a front view showing the state in which the conventional ball is at a certain height, and Figure 2b is a front view showing the state in which the center of the ball is in a stable position after falling and landing. Figure 2c is a front view showing a ball that has fallen and landed and hardly absorbs the impact of the falling load, Figure 3 is a double competition ball that is resting on the floor and is distorted by its own weight. Figure 4 is a front view of a conventional ball with almost no distortion, and its contact with the floor can almost be considered as a dot. Figure 5 is a front view of a ball in a gateball game. Side views showing in order the state on the verge of hitting the ball, the state where the ball has been hit, and the state where the hit ball has sufficiently absorbed the impact and begins to rotate. Figure 6 is a plan view of Figure 5, Figure 7
The figure shows the action of a competitive double ball: a state on the verge of rolling, a state in which it is rolling and is forming a distorted plane against the floor due to its own weight, and a state in which it immediately moves after leaving the floor. FIG. 8 is a side view showing the state in which the ball is traveling in a spherical shape, and FIG. 8 is a cross-sectional view of the double ball for competition. 1...Double ball for competition, 1A...Center of the ball, 1B
... core, 1C ... outer skin.
Claims (1)
レタンエラストマーなどでなる超柔軟な外皮で覆
つたことを特徴とする競技用二重ボール。 ２ 粘弾性ウレタンエラストマーは、分子量約１
５００〜６０００のポリオキシアルキレングリコ
ールと、少量の分子量５００以下のポリオールと
、ポリイソシアネートとを重合させた粘弾性ポリ
ウレタンである請求項１記載の競技用二重ボール
。[Scope of Claim for Utility Model Registration] 1. A double ball for competitions, characterized in that the outer periphery of a core made of a hard ball or the like is covered with an ultra-flexible outer skin made of a viscoelastic urethane elastomer or the like. 2 The viscoelastic urethane elastomer has a molecular weight of approximately 1
2. The double ball for competition according to claim 1, which is a viscoelastic polyurethane obtained by polymerizing polyoxyalkylene glycol having a molecular weight of 500 to 6,000, a small amount of a polyol having a molecular weight of 500 or less, and a polyisocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330189U JPH0341462U (en) | 1989-09-01 | 1989-09-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330189U JPH0341462U (en) | 1989-09-01 | 1989-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0341462U true JPH0341462U (en) | 1991-04-19 |
Family
ID=31652149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10330189U Pending JPH0341462U (en) | 1989-09-01 | 1989-09-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341462U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112566A (en) * | 1981-12-25 | 1983-07-05 | 富田 和夫 | Gate ball |
| JPS58183722A (en) * | 1982-04-21 | 1983-10-27 | Mitui Toatsu Chem Inc | Polyurethane resin composition having extremely low hardness |
| JPS58194913A (en) * | 1975-10-24 | 1983-11-14 | ナショナル リサーチ デベロップメント コーポレイション | Improvement of energy absorbing materials |
-
1989
- 1989-09-01 JP JP10330189U patent/JPH0341462U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58194913A (en) * | 1975-10-24 | 1983-11-14 | ナショナル リサーチ デベロップメント コーポレイション | Improvement of energy absorbing materials |
| JPS58112566A (en) * | 1981-12-25 | 1983-07-05 | 富田 和夫 | Gate ball |
| JPS58183722A (en) * | 1982-04-21 | 1983-10-27 | Mitui Toatsu Chem Inc | Polyurethane resin composition having extremely low hardness |
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