JPH02255164A - Metallic bat - Google Patents
Metallic batInfo
- Publication number
- JPH02255164A JPH02255164A JP1077841A JP7784189A JPH02255164A JP H02255164 A JPH02255164 A JP H02255164A JP 1077841 A JP1077841 A JP 1077841A JP 7784189 A JP7784189 A JP 7784189A JP H02255164 A JPH02255164 A JP H02255164A
- Authority
- JP
- Japan
- Prior art keywords
- bat
- ball
- reinforced resin
- pipes
- metal
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 5
- 239000004917 carbon fiber Substances 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011162 core material Substances 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 241000288673 Chiroptera Species 0.000 description 7
- 230000005484 gravity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002990 reinforced plastic Substances 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/50—Details or accessories of golf clubs, bats, rackets or the like with through-holes
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、野球やソフト用の金属バットに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a metal bat for baseball or softball.
（従来の技術および発明が解決しようとする課題）野球
やソフト用バットは、軽量化および強度増加を必要条件
として近年金属バットが主に用いられている。しかし、
この金属バットはアルミニウム金属管を加工して一端よ
り直管状の打撃部、テーパー状の中間部、小径のにぎり
部をスェージングにより順次形成したのち、上記一端プ
レスによる絞り加工等を行って球面状のヘッドを作り、
さらに溶接等を行なってグリップエンジをつくり、こう
して全体がその周方向においてほぼ一定肉厚の中空体と
して構成されたものであって、強度増加するためには全
体が厚肉となって重量が大となりやすく、また重心は上
記スェージングにより重心位置がバットの中央付近とな
りやすく、製造に当っては構造上、強度上の点で設計の
自由度が制約される不利が多かった。このため、近年、
バット全体を強化プラスチック製としてその肉厚を部分
的に調整したものも作られているが、充分な強度を得る
ためには全体的に厚肉とする必要があり重量の面で不合
理である。(Prior Art and Problems to be Solved by the Invention) In recent years, metal bats have been mainly used for baseball and softball bats, with the requirements of reducing weight and increasing strength. but,
This metal bat is made by processing an aluminum metal tube to sequentially form a straight hitting part, a tapered intermediate part, and a small-diameter grip part from one end by swaging, and then drawing it using a press at one end to form a spherical shape. make the head,
Furthermore, the grip engine is made by welding, etc., and the entire body is constructed as a hollow body with a substantially constant wall thickness in the circumferential direction.In order to increase the strength, the entire body has to be thick and heavy. Moreover, the center of gravity tends to be located near the center of the bat due to the above-mentioned swaging, and there are many disadvantages in manufacturing that the degree of freedom in design is restricted in terms of structure and strength. For this reason, in recent years,
Some bats have been made entirely of reinforced plastic and the wall thickness has been partially adjusted, but in order to obtain sufficient strength, the entire wall must be thick, which is unreasonable in terms of weight. .
（課題を解決するための手段）
これに対し、この発明は全体を従来の金属ハツトよりや
や薄肉の金属製中空体に形成するとともに、この金属製
中空体の打撃部に当る内部に、予め打撃部に相当する長
さに作られた複数本の炭素繊維、ガラス繊維あるいはポ
リアミド繊維等の強化用繊維による強化樹脂管を互いに
周面がつき合わされた集束状態で嵌挿封入して構成され
、これより、打撃部の強度が増大され、かつスィートス
ポット（最適打球面）が打撃部に保持されるようにした
ものである。(Means for Solving the Problems) In contrast, the present invention forms the entire metal hollow body with a slightly thinner wall than the conventional metal hat, and at the same time, the inside of this metal hollow body that corresponds to the striking part is pre-impacted. It is constructed by inserting and enclosing a plurality of reinforcing resin tubes made of reinforcing fibers such as carbon fibers, glass fibers, or polyamide fibers, each having a length corresponding to As a result, the strength of the hitting portion is increased, and the sweet spot (optimum ball hitting surface) is held in the hitting portion.
（発明の実施例）
この発明の実施例を図面について説明すると、第１図お
よび第２図において、１は従来の金属バットと同じくア
ルミニウム管を加工して作られた金属中空部材であって
、一端ヘッド部より１５０〜２５０ｍｍの範囲にわたり
直管状の打撃部２が形成され、順次テーパー状の中間部
３、小径のにぎり部４が連成され、各部はその周方向に
おいて一様の肉厚に作られており、この肉厚は従来の金
属バットよりやや薄肉として形成されている。(Embodiments of the Invention) An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, 1 is a hollow metal member made by processing an aluminum tube like a conventional metal bat, A straight tube-shaped striking part 2 is formed over a range of 150 to 250 mm from the head part at one end, and a tapered intermediate part 3 and a small-diameter grip part 4 are successively connected, and each part has a uniform thickness in the circumferential direction. The wall thickness is slightly thinner than that of conventional metal bats.
この金属製中空部材ｌの内部には、上記直管状の打撃部
２においては、その打撃部２に沿って小径かつ好適肉厚
の繊維強化樹脂管５・・が互に周面をつき合わせ断面七
曜星状に集束して嵌挿封入されている。これら繊維強化
樹脂管５・は、繊維が０゜方向（軸方向）と９０°方向
（周方向）に配向されており、例えば第３図のように、
９０’Ｍ５ａとＯ°層５ｂを重ねて作られる。例えば直
径１９．３ｍｍの芯材に、一方向引揃え炭素繊維プリプ
レグを、９０°（厚さ０．１０ｍｍ）−ｏ″（厚さ０．
１７ｍｍ）−９０°（厚さ０．１０ｍｍ）−０°（厚さ
０．１７ｍｍ）の順に巻装し、プラスチックテープ等で
テーピングし、加熱硬化させた後、脱芯を行なって管に
形成され、その外側にはｔ！１！！縁層が設けられてい
る。Inside this metal hollow member l, in the straight-tube-shaped striking part 2, fiber-reinforced resin pipes 5 of small diameter and suitable wall thickness are arranged along the striking part 2 with their circumferential surfaces abutted against each other. It is focused and inserted into a seven-day star shape. These fiber-reinforced resin pipes 5 have fibers oriented in the 0° direction (axial direction) and the 90° direction (circumferential direction), for example, as shown in FIG.
It is made by stacking 90'M5a and O° layer 5b. For example, a unidirectionally aligned carbon fiber prepreg is attached to a core material with a diameter of 19.3 mm at 90° (thickness 0.10 mm) - o'' (thickness 0.
17mm) - 90° (thickness 0.10mm) - 0° (thickness 0.17mm), wrapped in the order of 17mm) - 90° (thickness 0.10mm) - 0° (thickness 0.17mm), taped with plastic tape etc., heated and hardened, and then de-cored to form a tube. , and outside it is t! 1! ! A rim layer is provided.
上記の管を７本１組として、ヘッド部の開口したアルミ
ニウム中空部材１に挿入し、挿入部をスエージイング等
によりかしめて固定後、ヘッドの開口部を閉じることに
より封入される。A set of seven of the above-mentioned tubes is inserted into the aluminum hollow member 1 having an open head, the inserted portion is fixed by caulking by swaging, etc., and the opening of the head is closed to be sealed.
（発明の効果）
この発明は上記の構成により打撃部２の内部には繊維強
化樹脂管５・・・が互に周面をつき合わせて集束した状
態に封入されているから、打球に対し充分の強度と効率
的な飛球を行わせることができる。すなわち、ボールが
バットにあたった場合を考察すると、バットのボールが
あった部分は一時的に偏平化したボールの衝撃力の一部
がバットに吸収されるが、次いでボールがはね返される
に際してはボールにはバットの反発方のほかに上記偏平
化した部分の復元力も加わっている。この場合、この発
明においては上記偏平化は互に周面をつき合わせて封入
されている繊維強化樹脂管５・・・を介してバットの反
対側の面に伝達される結果、復元力の発生が従来の単な
る中空管に比べて急速かつ正しい方向に行われ、したが
って飛球方向、飛球距離を適正化させることができる。(Effects of the Invention) According to the above-described structure, the fiber-reinforced resin tubes 5 are enclosed inside the hitting section 2 in a converged state with their circumferential surfaces abutting each other, so that they are sufficient for hitting the ball. It is possible to make a strong and efficient fly ball. In other words, if we consider the case where the ball hits the bat, the part of the bat where the ball was temporarily flattened and some of the impact force of the ball is absorbed by the bat, but when the ball is bounced back, the ball In addition to the way the bat rebounds, the restoring force of the flattened portion mentioned above is also included. In this case, in this invention, the flattening is transmitted to the opposite side of the bat through the fiber-reinforced resin tubes 5, which are enclosed with their peripheral surfaces abutting each other, and as a result, a restoring force is generated. This occurs more quickly and in the correct direction than with conventional hollow tubes, and therefore the direction and distance of the ball can be optimized.
そして、この繊維強化樹脂管５・・・の重量により、バ
ット全体の重心を打撃部２に設定させることができ、ま
た金属製中空部材１をやや薄肉に形成してバット全体の
重量を所定値に収めるに当り、上記打撃部２が補強され
ているためバット全体の強度は充分に保持されており、
自由な設計で製造することができる。The weight of the fiber-reinforced resin tube 5 allows the center of gravity of the entire bat to be set at the striking portion 2, and the metal hollow member 1 is formed to have a slightly thinner wall so that the weight of the entire bat can be set to a predetermined value. Since the above-mentioned hitting part 2 is reinforced, the strength of the entire bat is sufficiently maintained.
Can be manufactured with free design.
（実験例）
いま、この発明による第１例〜第４例の各バットならび
に従来の金属バットおよび強化プラスチック製バットを
互に比較してみると、次表に示す結果が得られた。(Experimental Example) When the bats of the first to fourth examples according to the present invention, as well as conventional metal bats and reinforced plastic bats, were compared with each other, the results shown in the following table were obtained.
上記表において示した評価項目の内容は次の通りである
。The contents of the evaluation items shown in the table above are as follows.
（１）飛距離ニアルミニウムバットによる飛距離を基準
とし、次のようにして評価した。(1) Flight Distance The flight distance with a aluminum bat was used as a standard, and evaluation was made as follows.
０・・・アルミニウムバットよりも飛距離が非常に伸び
た。0: The flight distance was significantly longer than that of an aluminum bat.
Δ・・・アルミニウムバラ１−よりも飛距離がやや伸び
た。Δ...The flight distance was slightly longer than that of aluminum rose 1-.
（２）破損本数：各々１０本ずつ、打撃試験を行ない、
その時の亀裂の生じた本数を調べ
た。(2) Number of damaged pieces: 10 pieces of each were subjected to a blow test,
The number of cracks at that time was investigated.
なお、打撃試験は、バットのグリップ部を打撃試験機に
固定し、１８３ｇの球を高速で、３０００回ずつバット
の打球部に当てた後、バットの状態を調査することによ
り行った。The batting test was conducted by fixing the grip part of the bat to a batting testing machine, hitting the ball of 183 g at high speed with the hitting part of the bat 3000 times, and then examining the condition of the bat.
以上の結果、第１例〜第３例が特にすぐれており、第４
例および従来例２がこれに次くことがわかった。As a result, the first to third cases are particularly excellent, and the fourth case is particularly good.
It was found that Example and Conventional Example 2 were the next.
さらに、この発明においては、（１）強化繊維としては
、炭素繊維のように比重が少さく、強度の高いものが好
ましい。（ガラス繊維等の他の繊維でも使用上問題はな
い。）、（２）繊維強化樹脂層は重量的には１００ｇ以
下がよく、好ましくは７５ｇ以下が望ましい。（３）０
°層は、９ｏ′）Ｍの割れ防止する為のもので、アラミ
ド繊維等の有機繊維を用いるのが好ましい。Furthermore, in the present invention, (1) the reinforcing fiber is preferably one with low specific gravity and high strength, such as carbon fiber. (Other fibers such as glass fibers may be used without any problem.) (2) The weight of the fiber reinforced resin layer is preferably 100 g or less, preferably 75 g or less. (3) 0
The ° layer is for preventing cracking of 9o')M, and is preferably made of organic fibers such as aramid fibers.
図面はこの発明の実施例を示す説明図であって、第１図
は側面断面図、第２図は第１図Ａ−Ａ位置における正面
断面図、第３図は繊維強化樹脂管の正面断面図である。
１・・・金属製中空部材、２・・・打撃部、３・・・中
間部、４・・・にぎり部、５・・・炭素繊維強化樹脂管
。
＝８＝The drawings are explanatory diagrams showing an embodiment of the present invention, in which Fig. 1 is a side sectional view, Fig. 2 is a front sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a front sectional view of a fiber-reinforced resin pipe. It is a diagram. DESCRIPTION OF SYMBOLS 1...Metallic hollow member, 2...Blowing part, 3...Intermediate part, 4...Clip part, 5...Carbon fiber reinforced resin pipe. =8=
Claims (3)
小径のにぎり部を順次連成した金属製中空バットであっ
て、上記打撃部の直管状部分内部には予め複数本の繊維
強化樹脂管が互に周面を接して集束した状態で密に嵌挿
封入されている金属バット。(1) A straight pipe-shaped striking part from one end, a tapered middle part,
It is a metal hollow bat in which small-diameter gripping parts are sequentially connected, and a plurality of fiber-reinforced resin pipes are tightly fitted in advance in a bundled state with their peripheral surfaces touching each other inside the straight tubular part of the striking part. Metal bat inserted.
方向に配向され、かつ外面に絶縁層が構成されている請
求項１の金属バット。(2) In the fiber reinforced resin pipe, the fibers are oriented at 90° with respect to the 0° direction.
2. The metal bat of claim 1, wherein the metal bat is oriented in the direction of the metal and has an insulating layer on the outer surface.
維プリプレグを９０°−０°−９０°−０°の順に巻き
重ねて作られ、かつ外面に絶縁層が構成されている請求
項１の金属バット。(3) The fiber-reinforced resin pipe is made by winding unidirectionally aligned fiber prepregs in the order of 90°-0°-90°-0°, and has an insulating layer on its outer surface. metal bat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077841A JPH02255164A (en) | 1989-03-29 | 1989-03-29 | Metallic bat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077841A JPH02255164A (en) | 1989-03-29 | 1989-03-29 | Metallic bat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02255164A true JPH02255164A (en) | 1990-10-15 |
Family
ID=13645277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1077841A Pending JPH02255164A (en) | 1989-03-29 | 1989-03-29 | Metallic bat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02255164A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7503860B2 (en) | 2005-11-29 | 2009-03-17 | Prince Sports, Inc. | Sports racquet with multi-section frame |
| US7575527B2 (en) | 2006-09-20 | 2009-08-18 | Prince Sports, Inc. | Composite bat having a single, hollow primary tube structure |
| KR100953226B1 (en) * | 2006-08-26 | 2010-04-16 | 프린스 스포츠, 인크. | Composite bat having a multiple tube structure |
| US7727095B2 (en) | 2006-05-29 | 2010-06-01 | Prince Sports, Inc. | Hockey stick having a single, hollow primary tube |
| US7727096B2 (en) | 2005-07-18 | 2010-06-01 | Prince Sports, Inc. | Composite hockey stick system |
| US7909713B2 (en) | 2006-05-22 | 2011-03-22 | Prince Sports, Inc. | Shaft for a sports stick such as a hockey stick |
-
1989
- 1989-03-29 JP JP1077841A patent/JPH02255164A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7727096B2 (en) | 2005-07-18 | 2010-06-01 | Prince Sports, Inc. | Composite hockey stick system |
| US7503860B2 (en) | 2005-11-29 | 2009-03-17 | Prince Sports, Inc. | Sports racquet with multi-section frame |
| US7909713B2 (en) | 2006-05-22 | 2011-03-22 | Prince Sports, Inc. | Shaft for a sports stick such as a hockey stick |
| US7727095B2 (en) | 2006-05-29 | 2010-06-01 | Prince Sports, Inc. | Hockey stick having a single, hollow primary tube |
| KR100953226B1 (en) * | 2006-08-26 | 2010-04-16 | 프린스 스포츠, 인크. | Composite bat having a multiple tube structure |
| US7883434B2 (en) * | 2006-08-26 | 2011-02-08 | Prince Sports, Inc. | Composite bat having a multiple tube structure |
| US7575527B2 (en) | 2006-09-20 | 2009-08-18 | Prince Sports, Inc. | Composite bat having a single, hollow primary tube structure |
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