JPH01256983A - Ping-pong racket - Google Patents
Ping-pong racketInfo
- Publication number
- JPH01256983A JPH01256983A JP63083134A JP8313488A JPH01256983A JP H01256983 A JPH01256983 A JP H01256983A JP 63083134 A JP63083134 A JP 63083134A JP 8313488 A JP8313488 A JP 8313488A JP H01256983 A JPH01256983 A JP H01256983A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- sheet
- racket
- thickness
- ball
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 64
- 239000004917 carbon fiber Substances 0.000 claims abstract description 64
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000011120 plywood Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 abstract 1
- 238000009940 knitting Methods 0.000 abstract 1
- 239000002023 wood Substances 0.000 description 27
- 239000012925 reference material Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241000218691 Cupressaceae Species 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 241001385733 Aesculus indica Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving 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
- A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
- A63B59/40—Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
- A63B2102/16—Table tennis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、木質板と炭素繊維を素材とするシートを合理
的な配列（厚さの割合と配置方法）により組合わせ接合
してラケット本体を形成し、木質板と炭素繊維を素材と
するシートの双方の特性を有効に発揮せしめ得る卓球用
ラケットに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a racket body made by combining and joining sheets made of wood boards and carbon fibers in a rational arrangement (thickness ratio and arrangement method). The present invention relates to a table tennis racket that can effectively utilize the characteristics of both a wood board and a sheet made of carbon fiber.
従来の木質板と炭素繊維シートを組合わせ接合しａ、ｂ
、ｃに示す配列構造となっている。Combining and joining conventional wood boards and carbon fiber sheets a and b
, c.
しかし、この従来の卓球用ラケットは木質板と炭素繊維
シートとの配列構造が前記構造のものとなっているため
、木質板と炭素ｌ＃１．維シートの双方の特性が減殺さ
れる結果となｐ便用上好適ではなかった。However, since this conventional table tennis racket has the arrangement structure of the wooden boards and the carbon fiber sheets as described above, the arrangement of the wooden boards and the carbon fiber sheets is as described above. Both properties of the fiber sheet were diminished, making it unsuitable for personal use.
すなわち、第４図ａのものにおいては、ラケット本体を
肉厚の中央木質板１とこれより極めて肉薄の外部木質板
２と炭素繊維シート３とを積層接合して形成したもので
あるが、この場合には、外部木質板２と中央木質板１と
は炭素繊維シート２にて遮断されており外部木質板２が
極めて肉薄であるため外部木質板２側で打球したとき、
外部木質板２０弾力性は殆ど発揮されず、また炭素繊維
シート２の弾力性もその背面に位置する弾性係数が炭素
繊維シートより小さい肉厚の中央木質板により阻害され
て充分に有効に発揮することができないとともに、その
合板構造とも相まってラケット本体のしなりは者しく減
殺される。したがって外部木質板２餉で処理した打球の
原質は、木質板の単板ラケットの場合とは異なシ合板ラ
ケットに近い状態の初速の速い硬直した反発の直線的な
もの（偉琢）となり、ラケット本体のしなりがないため
ボールとラケット本体との接触時間が短かくボールに対
し光分な回転と伸びを与えることができない。そして、
炭素繊維シート３の掘勤減衰軍が高いため、打球の際ラ
ケット深部（中央部）にまで達し手にひびくような強い
有害な衝撃振動は炭素繊維シート３に吸収除去されるが
、炭素徹維／−ト３が打球面近くに位置し外部木質板が
極めて薄いため、ボールを確実にとらえ意図した打球を
行うために必要な過変な衝撃振動までも吸収除去されて
手元に伝わらないので、打球時におけるラケットによる
ボールの捕捉感がない、つまり意図した打球操作をラケ
ットを通した手応えによシ感得することができない。一
方、肉厚の中央木質板１側で打球したときには、中央木
質板１が肉卑であるためその弾力性はほぼ木質板の単板
ラケットと同様に発揮されるが、炭素繊維シート３はラ
ケットの裏面近くに位置しているためその弾力性は殆ど
有効に発揮されず。That is, in the racket shown in FIG. 4a, the racket body is formed by laminating and bonding a thick central wooden board 1, an extremely thin outer wooden board 2, and a carbon fiber sheet 3. In this case, the outer wood board 2 and the central wood board 1 are separated by the carbon fiber sheet 2, and the outer wood board 2 is extremely thin, so when the ball is hit on the outer wood board 2 side,
The elasticity of the outer wood board 20 is hardly exhibited, and the elasticity of the carbon fiber sheet 2 is inhibited by the central wood board located on the back side and whose elastic modulus is smaller than that of the carbon fiber sheet, so that the elasticity is sufficiently exerted effectively. In addition to this, combined with its plywood structure, the bending of the racket body is significantly reduced. Therefore, the original quality of the ball hit with two external wooden boards is different from that of a single wood racket, and is similar to that of a plywood racket, with a fast initial velocity, stiff rebound, and a straight line. Since there is no flex in the racket body, the contact time between the ball and the racket body is short, and it is not possible to give the ball sufficient rotation and elongation. and,
Since the carbon fiber sheet 3 has a high damping force, strong harmful impact vibrations that reach the deep part (center) of the racket and affect the hands when hitting a ball are absorbed and removed by the carbon fiber sheet 3. /- Because the toe 3 is located close to the ball hitting surface and the external wooden board is extremely thin, even the excessive impact vibrations necessary to accurately catch the ball and hit the ball as intended are absorbed and removed and are not transmitted to the hand. There is no feeling of the racket catching the ball when hitting the ball, that is, it is impossible to feel the intended ball hitting operation from the response through the racket. On the other hand, when a ball is hit on the side of the thick central wooden board 1, since the central wooden board 1 is thin, its elasticity is almost the same as that of a single wooden racket, but the carbon fiber sheet 3 Since it is located near the back surface of the , its elasticity is hardly exerted effectively.
炭素繊維シートの存在価値はない。Carbon fiber sheets have no value.
次に７４図すのものにおいては、肉逸の中央木質して介
在し一対に接合したサンドイッチ構造となっている。こ
のように一対の炭素繊維シートの間に他の部材を芯材と
してサンドイッチにして一体接合したものは、その外面
側に位置する炭素繊維シートの引張強度が犬である関係
で両性面側の曲げ剛性が著しく大きくなり全体としての
強度性も増強されるので、近年において飛行機、船舶、
自動車等の耐久構造部材として多く便用されるようにな
っている。したがって第４囚すのものは斯かる炭素繊維
シートを利用したサンドイッチ構造となっているため、
ラケット本体の表裏いずれの面で打球しても炭素繊維シ
ートによる白は剛性が大となるためその弾力性は発揮さ
れずラケット本体のしなりは減殺されて、第４図ａの場
合と同様の原質となり、打球時におけるラケットによる
ボールの捕捉感（良好な打球感）も損われるものとなる
。Next, in the one shown in Figure 74, it has a sandwich structure in which a wooden part is interposed in the center of the meat part and joined together as a pair. In this way, when a pair of carbon fiber sheets is sandwiched between a pair of carbon fiber sheets and another member is used as a core material, and the tensile strength of the carbon fiber sheet located on the outer surface is the same, the bending of the bipolar surface side is difficult. As the rigidity is significantly increased and the overall strength is also increased, in recent years it has been used for airplanes, ships,
It is increasingly being used as a durable structural member for automobiles and the like. Therefore, since the fourth prisoner has a sandwich structure using such carbon fiber sheets,
Regardless of whether the ball is hit on either the front or back side of the racket body, the rigidity of the carbon fiber sheet increases, so its elasticity is not exhibited and the bending of the racket body is reduced, resulting in the same situation as in the case of Figure 4a. This also impairs the feeling of the racket catching the ball when hitting the ball (good hitting feeling).
そして炭素繊維７−ト３．’３’はラケット本体の外面
側したがって打球面に近く位置していてその外面の外部
木質板２．２′は極めて肉薄であるため。and carbon fiber 7-t3. '3' is located on the outer surface of the racket body, ie, close to the ball hitting surface, and the outer wooden board 2.2' on the outer surface is extremely thin.
外部木質板による弾力性も全く期待できない。The elasticity provided by the external wooden board cannot be expected at all.
更に７４図Ｃのものにおいては、中央木質板１゜１′と
外部木質板２．２′と炭素繊維シート３，３′、３″と
を積層接合してラケット本体を形成したものであるが、
この場合にけ第４図すの構造のものにその中央部に炭素
偵維シートが加わったものであるから、前記第４図すの
ものと同様の問題点を有している。Furthermore, in the racket shown in Fig. 74C, the racket body is formed by laminating and bonding the central wooden board 1°1', the external wooden board 2.2', and the carbon fiber sheets 3, 3', and 3''. ,
In this case, since a carbon fiber sheet is added to the center part of the structure shown in FIG. 4, it has the same problems as the structure shown in FIG. 4 above.
以上のとおり従来の木質板と炭素繊維シートとの組合わ
せによる卓球用ラケットは、その両者の配列の位置と特
に打球面側の木質板の厚さに問題があるため木質板と炭
素繊給シートの夫々の特性を有効に発揮することができ
す、むしろその特性を減殺する結果となっており、返球
時の原質およびラケットによるボールの捕捉感も良好で
はなく卓球用ラケットとしては使用上好適ではないとい
う難点を有している。As mentioned above, the conventional table tennis racket that combines a wood board and a carbon fiber sheet has problems with the arrangement position of the two and especially the thickness of the wood board on the ball-hitting surface. It is possible to effectively demonstrate each of the characteristics of the table tennis racket, but in fact, the characteristics are diminished, and the quality of the ball when returning the ball and the feeling of catching the ball with the racket are also not good, making it unsuitable for use as a table tennis racket. It has the disadvantage that it is not.
そこで９本発明は斯かる従来の卓球用ラケットが有して
いる難点を解７自することを課題とし、木質板として単
板９合板いずれを用いた場合であっても木質板と炭素ｆ
１１．維ンートの夫々の特性を光分に有効に発揮し従来
の単板１合板ラケットの夫々の特性１機能を増強するこ
とができる４琢用ラヶノドを提供することを目的とする
。Therefore, it is an object of the present invention to solve the drawbacks of the conventional table tennis racket, and to solve the problems that the conventional table tennis racket has.
11. To provide a rack racket for four rackets capable of effectively exhibiting each characteristic of a fixed racket and enhancing each characteristic and function of a conventional single-panel and one-plywood racket.
本発明は、上記目的を達成するために次の手段をとって
いる。すなわち、「木質板にて形成されたラケット本体
の厚さ方向中央部全面に亘って。The present invention takes the following means to achieve the above object. In other words, "over the entire central part in the thickness direction of the racket body formed of a wooden board.
ラケット本体全体の厚さに対し所定の割合の肉薄の炭素
繊維を素材とするソートを接合配設して卓球用ラケット
を形成した」ことを特徴とする。A table tennis racket is formed by bonding and arranging a sort made of thin carbon fiber in a predetermined proportion to the thickness of the entire racket body.
上記手段における木質板は一枚板の単板でも複数枚を接
合した合板でもいずれでもさしつかえない。同様にラケ
ット本体の厚さ方向中央部に介在させる炭素繊維を素材
とするシートも、所定割合の厚さである限り、一枚のシ
ートでもり数枚を１合した合板シートいずれでもさしつ
かえない。The wooden board used in the above means may be either a single veneer board or a plywood board made by joining a plurality of boards together. Similarly, the sheet made of carbon fiber interposed in the center of the racket body in the thickness direction may be either a single sheet or a plywood sheet made by laminating several pieces of wood, as long as the thickness is within a predetermined ratio.
木質板によるラケット本体の厚さ方向中央部全面に亘っ
て所定割合の肉薄の炭素繊維を素材とするシートが配設
されているため、ラケット本体の表裏いずれの面におい
ても打球面に位置する木質板は適度な厚さとなっており
、そのため打球面側の木質板の弾力性は有効に発揮され
るとともに。A sheet made of thin carbon fiber of a predetermined proportion is disposed over the entire center of the racket body in the thickness direction, which is made of a wooden board, so that the wood material located on the ball-hitting surface on both the front and back sides of the racket body The board has an appropriate thickness, so the elasticity of the wood board on the ball-hitting surface is effectively demonstrated.
中央部に位置する炭素繊維を素材とするシートも背後に
位置する適度な与さの木質板によってその弾力性が明害
されず充分に有効に発揮される。したがって木質板が単
板であれば単板としての機能が１合板であれば合板とし
ての機能が夫々そのまま有効に活かされると同時に炭素
繊維を素材とするシートの特性である木質板を上回る弾
力性（しなりと復元力の速さ）が有効に発揮されるため
、従来の単板１合板ラケットの機能を増強するものとな
る。また、振動減衰率が高い炭素繊維を素材とするシー
トはラケット本体の厚さ方向中央部に位置しその外部水
［＆は適度な纒さとなっているので、町原の際前把手に
ひびくような強い有害な衝撃振動が吸収除去されること
はもちろん、ボールを確実にとらえ意図した町原を行う
ために必要な適度な衝撃振動は外部木質板を通して手元
に伝わり、ラケットによるボールの捕捉感（良好が打球
感）は充分に得られる。つまシ、炭素繊維を素材とする
シートがプレーに必要なｇ＃ｂ撮勤のフィルターの役割
を果している。The sheet made of carbon fiber located in the center also exhibits its elasticity to its fullest extent without being affected by the presence of a moderately thick wooden board located behind it. Therefore, if the wood board is a veneer, it will function as a veneer, while if it is a plywood board, the functions of the plywood will be effectively utilized as they are, and at the same time, it will have more elasticity than a wood board, which is a characteristic of sheets made of carbon fiber. (bending and restoring force speed) are effectively demonstrated, thereby enhancing the functions of the conventional single-panel plywood racket. In addition, the sheet made of carbon fiber, which has a high vibration damping rate, is located at the center of the racket in the thickness direction, and the external water [& has a moderate amount of dust, so it will not affect the front handle when playing in the middle of a town. In addition to absorbing and removing strong harmful impact vibrations, the moderate impact vibrations necessary to reliably catch the ball and perform the intended machihara are transmitted to the hand through the external wooden board, improving the feeling of catching the ball with the racket ( A good shot feel is obtained. A sheet made of carbon fiber plays the role of a filter for g#b photography necessary for play.
別紙図面２１〜２３図、参考図１．２および参考資料１
．２に基づいて本発明に係る卓球用ラケットの一実施例
について説明する。Attached drawings 21 to 23, reference figures 1.2 and reference material 1
．． 2, one embodiment of the table tennis racket according to the present invention will be described.
第１図は第１の実施例に係る皇球用ラケットを示すもの
で、ラケット本体を形成する等専の指板１０．１０’の
厚さ方向中央部全面に亘って所定厚さの炭素繊維を素材
とするシート１１を介在しこれを接着剤にて接合して一
体となしたものであり、１２はグリップである。炭素繊
維を素材とするシート１１は、炭素繊維を編みあけてク
ロス（布）状となしたもの、もしくはこのクロスにエポ
キシ樹脂等を含浸させてシート状となしたもの、 ｇｕ
ち複合材料として用いられているＣＦＭＰ（炭素繊維強
化グラスチック）を用いる。また、この炭素繊維を素材
とするシート１１の肉厚は約Ｑ、１ｍｍ〜Ｑ、５ｍｙａ
のものを用い、一枚の７−ト又は数枚のシートを重合し
てこの肉厚となしたものを用いる。FIG. 1 shows a racket for imperial golf according to the first embodiment, in which carbon fibers of a predetermined thickness are used over the entire central part in the thickness direction of the fingerboard 10 and 10' forming the racket body. A sheet 11 made of . The sheet 11 made of carbon fiber is made by weaving carbon fibers into a cloth shape, or by impregnating this cloth with an epoxy resin or the like and making it into a sheet shape.
CFMP (carbon fiber reinforced glass), which is used as a composite material, is used. Further, the thickness of the sheet 11 made of carbon fiber is approximately Q.1 mm to Q.5 mya.
One 7-sheet or several sheets are polymerized to have this thickness.
そして、この炭素繊維を素材とするシート１１を含めて
ラケット本体全体の肉厚は約５ ｍ ｒｈ〜ｌＱｍ＋ｓ
のものを用いる。したがって、単板１０．１０’（木質
板）の肉厚は約２．３７５ｍｍ 〜４．８７５ｍｍ、：
なっている。よって、ラケット本体全体の肉みに対する
炭素繊維を素材とするシート１１の肉厚の割合ている。The thickness of the entire racket body including the sheet 11 made of carbon fiber is approximately 5 m rh~lQm+s
Use the one. Therefore, the wall thickness of the veneer 10.10' (wood board) is approximately 2.375 mm to 4.875 mm:
It has become. Therefore, the ratio of the thickness of the sheet 11 made of carbon fiber to the thickness of the entire racket body is determined.
第２図は２２の実施例を示すもので、２１図の単板１０
．１０’に代えて指板の二枚合板１３．１３’を用いた
ものである。第３図は２３の実施例を示すもので、２１
図の単板１０．１０’に代えて指板の三枚合板１４．１
４’を用いたものである。この第２．第３の実施例にお
ける木質板と炭素繊維を素材とするシート１１の配列構
造および夫々の肉厚は、牙１図の、ｔ−１実施例の場合
とＩＩＩＩＪ様である。Figure 2 shows 22 embodiments, and the veneer 10 in Figure 21.
．． 10' is replaced by two plywood fingerboards 13 and 13'. FIG. 3 shows 23 embodiments, 21
Three-ply plywood fingerboard 14.1 instead of the single board 10.10' shown in the figure
4' is used. This second. The arrangement structure and thickness of the sheets 11 made of wood boards and carbon fibers in the third embodiment are similar to those in the t-1 embodiment shown in Fig. 1, IIIJ.
本発明者は、別紙図面の参考図１に示す寸法と構造のＡ
１−Ａ３の試料について、参考資料１−１および１−２
に示す方法にて荷重たわみ雪の変化の試験を行ったとこ
ろ、別表１および参−ｑ図２の試験結果を得た（参考資
料１−２および１−３参照）。、Ａ１の試料は、長さ２
８０ｒＪＬｒｒＬ、巾６５ｍ）、厚さ６鴇痛 の指板の
単板Ｗである。扁２の試料は、扁１と同−良さ同−巾の
二枚の指板の分割板Ｗｌ。The inventor has discovered that A with the dimensions and structure shown in Reference Figure 1 of the attached drawings.
Regarding sample 1-A3, reference materials 1-1 and 1-2
When a test was conducted on changes in snow due to load deflection using the method shown in Figure 1, the test results shown in Attached Table 1 and Figure 2 were obtained (see Reference Materials 1-2 and 1-3). , A1 has a length of 2
It is a single wood fingerboard W, 80rJLrrL, width 65m) and 6mm thick. The sample of Flat 2 is a divided plate Wl of two fingerboards having the same quality and width as Flat 1.
Ｗ２の間にＡ１と同一長さ同−巾で厚さ０．２５ｍＷ＆
の炭素繊維を素材とするシートＣを介在させこれらを接
着剤にて一体に重合接着したものであり、全体の厚さは
Ａ１と同一の０４である。したがって、各分割板ｗ、、
ｗ２の厚さは２．８７５扉ｍとなっている。Ａ３の試料
は、ＡＩと同一長さ同−巾で淳さ３．７−ｍの指板の中
央’Ｊｋ ” ｓ とこれと同一長さ同−巾で厚さ各０
．釦１の指板の両側外面板ｗ、、Ｗ、との間に夫々Ａ１
と同一長さ同−巾テ厚さ０．２５−”の炭素繊維を素材
とするシ）Ｃ，Ｃを介在させこれらを接着剤にて一体に
重合接着したものであり、したがって全体の厚さはＡ１
とＡ２の場合と同一の６１１である。しかしてこれら各
試料について、参考資料１−２に示すとおり、各試料の
長さ方向両端部下面を生性５ｍｓ円弧面を肩する支柱に
て支持し、試料の上面中央部に前記支柱と向−径の円柱
を試料の巾方向全面に当接させ、この円柱にて試料に対
し５＋＋＝ｍ／ｓｉｎ の速度で５ｋｇｆより５ｋｇｆ
刻みテ３０ｋｇｆまでの荷重を加え、各試料の上面中央
部における既定荷重時のたわみ量を測定した。すると。Between W2 and A1, the same length and width and thickness 0.25mW &
These are polymerized and bonded together with an adhesive with a sheet C made of carbon fiber interposed therebetween, and the overall thickness is 04, which is the same as A1. Therefore, each dividing plate w,
The thickness of w2 is 2.875 door m. The A3 sample has the same length and width as AI and a thickness of 3.7 m at the center of the fingerboard, and the same length and width as AI and a thickness of 0.
．． A1 between the outer plates w, , W, on both sides of the fingerboard of button 1, respectively.
It is made of carbon fiber with the same length, width, and thickness of 0.25" and is polymerized and bonded together with adhesive, with C and C interposed. Therefore, the overall thickness is is A1
and 611, which is the same as in the case of A2. As shown in Reference Material 1-2, for each of these samples, the lower surfaces of both lengthwise ends of each sample were supported by supports that shouldered the 5 ms circular arc surface, and a A cylinder with a diameter of
A load of up to 30 kgf was applied to each sample, and the amount of deflection under a predetermined load at the center of the top surface of each sample was measured. Then.
各試料の各荷重毎のたわみ量は別表１および参考図２の
とおシであった（参考資料１−２．１−３）。The amount of deflection for each load of each sample was as shown in Attached Table 1 and Reference Figure 2 (Reference Material 1-2.1-3).
別 表 １
側外面近くに一対の炭素繊維を素材とするシートＣ，Ｃ
を介入させたＡ３の試料は、Ａ１と２の試料に比べてた
わみ量の増加の開会がきわめて小さいものとなっている
。即ち各荷重時におけるたわみ量の増加は、鳥１の試料
が１．２””、Ａ２の試料が１．２〜１．３−−である
のに対し、屋３の試料は０．９〜１．Ｑｙｘｎと小さい
。Attachment Table 1 A pair of sheets C and C made of carbon fiber near the side outer surface
In sample A3, which had the intervention, the increase in the amount of deflection was extremely small compared to samples A1 and A2. In other words, the increase in deflection under each load is 1.2'' for the bird 1 sample and 1.2 to 1.3 for the A2 sample, while the increase in deflection for the bird 3 sample is 0.9 to 1.3. 1. Qyxn and small.
また、Ａｌと２の試料はＡ３の試料に対し各荷重時にお
けるたわみ量がいずれも犬であり、そしてそのたわみ量
の差は荷重の増大にしたがって大差となっている。即ち
、そのたわみ量の差は５ｋｇｆ荷重時には０．３島墓、
１０ｋｇｆ荷重時には３．５ｍｍであるが、３０ｋｇｆ
荷重時には１・５ ｍ ７１１〜１．８−ｆｉと大きな
開きとなっている。In addition, the amount of deflection of the Al and 2 samples under each load is the same as that of the A3 sample, and the difference in the amount of deflection becomes larger as the load increases. In other words, the difference in the amount of deflection is 0.3 at a load of 5 kgf;
At 10kgf load, it is 3.5mm, but at 30kgf
When loaded, there is a large difference of 1.5 m 711 to 1.8-fi.
羞→讐また。檜の単板である應１の試料と楢の単板の厚
さ方向中央部全面に亘って炭素繊維を素材とするシート
を配設した構造のＡ２の試料とは、たわみ量が低荷重時
には同一であるが高荷重になるにしたがいＡ２の試料の
方が大きなたわみ量となっている。Shame → Enmity. Sample No. 1, which is a cypress veneer, and A2, which has a structure in which a sheet made of carbon fiber is disposed over the entire center of the oak veneer in the thickness direction, are different from each other when the amount of deflection is low at low loads. Although they are the same, the A2 sample has a larger amount of deflection as the load increases.
したがって上記試験結果は、弾性係数の犬な一対の炭素
繊維を素材とするシートと木質板とのサンドイッチ構造
を有するＡ３の試料においては。Therefore, the above test results are the same for the A3 sample, which has a sandwich structure of a pair of carbon fiber sheets and a wood board, with a low elastic modulus.
炭素繊維を素材とするシートは弾性係数が犬であると共
に引張強度も極めて犬であるため荷重時に荷重面と反対
側の面側に位置するシートによる大きな引張抵抗が作用
して荷重面と反対側の面の伸張率が抑制され、その結果
屋３の試料は白は剛性が大となりたわみ夛が小さい、即
ちあまりしならないということを物語っている。一方上
記試験結果は、檜の単板の厚さ方向中央部全面に亘って
炭素繊維を素材とするシートを配設した構造の点２の試
料においては、シートの両面に位置する木質板の厚さが
適度な厚さであるため、荷１時における木質板の弾性機
能は充分に発揮されると同時にシートの弾性機能もその
背後に位置する木質板により阻害されることなくこれ又
充分に発揮される、その結果檜の単板による弾性機能に
加えてシートによる弾性機能により板体全体の弾性機能
が増大され、たわみ量が増大し充分なしなりが得られる
ということも物語っている。Sheets made of carbon fiber have a high elastic modulus and extremely high tensile strength, so when a load is applied, a large tensile resistance is exerted by the sheet located on the side opposite to the load surface, causing the sheet to The elongation rate of the surface is suppressed, and as a result, the sample from Ya 3 shows that white has a large stiffness and a small deflection, that is, it does not bend much. On the other hand, the above test results show that in the sample at point 2, which has a structure in which a sheet made of carbon fiber is disposed over the entire center of the cypress veneer in the thickness direction, the thickness of the wooden boards located on both sides of the sheet is Since the sheet has an appropriate thickness, the elastic function of the wooden board is fully demonstrated at the time of loading, and at the same time, the elastic function of the sheet is also fully demonstrated without being inhibited by the wooden board located behind it. As a result, in addition to the elastic function of the cypress veneer, the elastic function of the sheet increases the elastic function of the entire board, increasing the amount of deflection and providing sufficient bending.
しかして、本発明の卓琢用ラケットのＴｈｇおよびその
具体的実施例である上記第１実施例の恵琢用ラケットは
前記Ａ２の試料と同様の構造を有しており、一方第４図
すに示す従来の卓琢用ラケットは前記煮３の試料と同様
の構造を有しているものでちるから、両者は夫々上記試
験結果に示されている特性をそのまま発揮するものであ
る。Therefore, the Thg of the table racket of the present invention and the Keitaku racket of the first embodiment, which is a specific example thereof, have the same structure as the sample A2. Since the conventional racket for table tennis shown in FIG. 1 has a structure similar to that of the sample No. 3, both exhibit the characteristics shown in the above test results.
なお、炭素繊維を素材とするシートが木質板の厚さ方向
中央部全面に亘って配服されている構造となっているも
のであっても、板体全体の厚さに占めるシートの厚さの
割合が増大すればするほど相対的にシート外面に位置す
る木質板の淳さが肉薄となっていくので、この場合には
木質板の弾性機能が有効に発揮されないとともにシート
背面に位置しシートより弾性係数の小さい木η板の存在
によってシートの弾性機能も阻害されて有効に発揮でき
ないものとなる。そのため、木質板およびシートの双方
の特性を有効に発揮させるためのシートの淳さの上限は
約Ｑ、５ｍｍ程度である。In addition, even if the sheet made of carbon fiber is distributed over the entire center of the wooden board in the thickness direction, the thickness of the sheet relative to the total thickness of the board is As the ratio of The presence of the wooden η board with a smaller elastic modulus also impedes the elastic function of the sheet, making it unable to perform effectively. Therefore, the upper limit of the thickness of the sheet to effectively exhibit the characteristics of both the wood board and the sheet is about Q, about 5 mm.
本発明は叙上のようにｉｓａしたので、上述の課題は確
実に解決され、次の効果を有している。Since the present invention has been achieved as described above, the above-mentioned problems are reliably solved and the present invention has the following effects.
１）炭素ｍ維を素材とするシートはラケット本体を形成
する木質板の厚さ方向中央部全面に亘って配設されてい
るとともに、その厚さはラケット本体全体の厚さに対し
所定の割合となっているので、このシートの両外面に位
置する木質板は従来のものと異なり適度な肉淳となって
おり、そのため従来のものと異なり木質板および炭素Ｉ
ｌ！雄を素材とするシート双方の特性が充分に有効に発
揮される。1) The sheet made of carbon fiber is disposed over the entire center of the wooden board forming the racket body, and its thickness is a predetermined ratio to the thickness of the entire racket body. Therefore, the wooden boards located on both outer surfaces of this sheet have a moderate thickness, unlike the conventional ones, and therefore, unlike the conventional ones, the wooden boards and carbon I
l! The characteristics of both sheets made of male material are fully and effectively exhibited.
２）そのため、在来の木質板一枚叛の単板ラケット、木
質板複数枚の合板ラケット特有の性能が夫々有効に活か
されると一時に炭素繊維を素材とするシートの存在によ
って史にその性能が向上される。2) Therefore, if the unique performance of the conventional veneer racket made of a single wooden board and the plywood racket made of multiple wood boards were effectively utilized, the existence of sheets made of carbon fiber would improve their performance. is improved.
３）すなわち、このシート両外面の木質板が一枚也の単
板である場合には、ボールに充分な回転と相手コート到
達後における伸びを与えるために必要なラケット本体の
適度なしなりとボールに対する接触時間が得られるとと
もに、木質板を遥かに上回る炭素繊維を素材とするシー
トの存在によりラケット本体のしなシの復元性が速く、
そのため木質板のみによる単板ラケットに比し打球時に
おいてラケット本体よシの球離れが更に適確でスピード
の速い威力のあるボールを打つことができる。そして、
ボールの反発は硬質でしなりのない面における反発のよ
うに硬直しｆｃ感触のものではなく、木質板単板による
特有なボールを包み込むような軟らかな感触の反発が得
られる。3) In other words, if the wooden boards on both outer surfaces of this sheet are made of a single piece of wood, then the appropriate flex of the racket body is necessary to give the ball sufficient rotation and elongation after reaching the opponent's court. In addition to obtaining a contact time with
Therefore, compared to a single-plate racket made only of wooden boards, the ball separation from the racket body is more accurate when hitting the ball, and it is possible to hit a fast and powerful ball. and,
The repulsion of the ball is not a hard, fc-like repulsion like repulsion on a hard, unbending surface, but a soft repulsion that feels like it wraps around the ball, which is unique to the single wood board.
４）またシート両外面の木質板が複数枚を接合した合板
の場合には、在米の木Ｊｊｉ４＆のみの合板ラケットと
同様な機能がそのまま有効に活かされる。すなわち、ボ
ールの反発速度（初速）が速く。4) Furthermore, if the wooden boards on both outer surfaces of the seat are made of plywood made by joining a plurality of wood boards, the same function as the plywood racket made by Jji4& only in the United States can be effectively utilized as is. In other words, the rebound speed (initial velocity) of the ball is fast.
回転数の少ない直線的な打球で前陣速攻に適する原質の
打球が得られる。そしてその際復元性の速い炭素繊維を
素材とするシートの特性が加わるため、更にスピードが
速く且つ威力のあるボールを打つことができる。The ball is hit in a straight line with little rotation, making it ideal for fast attacks in front of the field. At this time, the characteristics of the sheet made of carbon fiber, which has a fast recovery property, are added, so it is possible to hit the ball even faster and with more power.
５）次に、振ｗＪ減衰率の極めて高い炭素繊維シートが
従来のようにラケット本体の打球面に近い立搬ではなく
中央部に位置しており、その外面の木質板はｉｆｆな厚
さを有しているので、打球の際ラケット本体の深部（中
央部）［４で達し手にひびくような有害な強度のｇ＃隼
低勤が吸収除去されることはもちろん、ボールを確実に
とらえ意図した打球操作をなすために必要な適度な衝撃
振動は外部の適度な厚さを有する木質板を通して手元に
伝えられ、その結果意図した打球操作の手応えをラケッ
トを通して確実に実感することができる。5) Next, the carbon fiber sheet, which has an extremely high vibration wJ damping rate, is located in the center of the racket, rather than in the upright position near the ball-striking surface as in the past, and the outer wooden board has an extremely high thickness. Because of this, when hitting a ball, the deep part (center part) of the racket body [4] not only absorbs and removes the harmful strength of G# Hayabusa that affects the player's hands, but also ensures that the ball is firmly caught and intended. The appropriate impact vibrations necessary to perform the desired ball-striking operation are transmitted to the user's hand through the external wooden board having an appropriate thickness, and as a result, the user can reliably feel the response of the intended ball-striking operation through the racket.
すなわち打球時におけるボールに対する捕捉感（良好な
打球感）を充分に得ることができる。この打球時におけ
る有害な衝撃振動を除去し必要な衝撃振動のみを伝える
炭素繊維を素材とするシートによるａｓｓｓのフィルタ
ー効果は、外部の木質板が単板であると合板であると同
様である。That is, it is possible to obtain a sufficient feeling of catching the ball (good feeling of hitting the ball) when hitting the ball. The filtering effect of the asss by the sheet made of carbon fiber, which removes harmful impact vibrations when hitting a ball and transmits only the necessary impact vibrations, is the same as when the external wooden board is made of veneer or plywood.
第１図〜２３図は本発明卓球用ラケットの実施例を示す
もので、第１図は７１実施例の側面図１、ｌ！Ｉ−２図
は矛２実施例の側面囚、２３図は第３実施例の側面図で
ある。第４図（ａ）〜（Ｃ）は従来の卓球用ラケットを
示すもので、（ａ）は木質板のラケット本体の片面側打
球面（外′ｉｆ＋）近く内部に一層の炭素繊維シートを
配設した側面図、（ｂ）は木／Ｘ版のラケット本体の両
面ＩＩ’ｉ打球伽打球面）近く内部に二１−の炭素繊維
シートを配設した側面図、（Ｃ）は木質板のラケット本
体の両面側打球面（外面）近く内部とその中央部に三層
の炭素繊維シートを配設した側面図である。参考図１は
、参考資料１−１〜１−３および参考資料２に係る卓球
用試験板の荷重たわみ試験に用いたＡ１〜屓３の試料（
試験板）の構造と寸法を示す駅明図、参考図２は、同上
試験結果を示すグラフである。
１０．１０′・・・単板よシなる木質板１１・・曇炭素
線維を素材とするシート１３．１３’・・・二枚合板よ
シなる木ｊＸ＆１４．１４’・・・三枚合板よりなる木
質板策／図
簗 ２ 図
第 ３ｆ！２１
第４ 図
手続補正書（方式）
昭和６３年７月１１日
特許庁長官 吉 １）文 毅 殿
／ 事件の表示 特願昭６３−８３１３４号ユ、 発
明の名称 卓球用ラケット
３ 補正をする者
事件との関係 特許出願人
東京都新宿区早稲田鶴巻町５４０番地
岡田秀太部
弘代理人
左 補正命令の日付 昭和６３年６月２８日発送る
補正の対象 明Ｍ書
ｌ 補正の内容
明細ＩＦ第第１亘
・・・・・グラフである。」の記載を削除する。1 to 23 show embodiments of the table tennis racket of the present invention, and FIG. 1 is a side view 1 of the 71st embodiment. Figure I-2 is a side view of the second embodiment of the spear, and Figure 23 is a side view of the third embodiment. Figures 4 (a) to (C) show a conventional table tennis racket, in which (a) a single layer of carbon fiber sheet is arranged inside near the ball-hitting surface (outer 'if+) on one side of the racket body made of a wooden board. (b) is a side view of the wooden/X version of the racket body with a carbon fiber sheet of 21 placed inside near both sides (II'i hitting ball hitting surface), (C) is a side view of the wooden board FIG. 2 is a side view showing three layers of carbon fiber sheets arranged inside near the ball hitting surfaces (outer surfaces) on both sides of the racket body and in the center thereof. Reference Figure 1 shows samples A1 to A3 used in the load deflection test of table tennis test plates according to Reference Materials 1-1 to 1-3 and Reference Material 2.
Reference figure 2, which shows the structure and dimensions of the test plate), is a graph showing the test results. 10.10'...Wood board which is better than veneer 11...Sheet made of cloudy carbon fiber 13.13'...Tree jX &14.14'...Three plywood Naru wooden plank plan / Zukan 2 Figure 3f! 21 No. 4 Amendment to Figure Procedures (Method) July 11, 1988 Director General of the Patent Office Yoshi 1) Takeshi Moon / Indication of the case Japanese Patent Application No. 1983-83134 Title of the invention Table tennis racket 3 Person making the amendment Relationship to the case: Patent applicant: 540 Tsurumaki-cho, Waseda, Shinjuku-ku, Tokyo, Hidetabe Okada, attorney (left) Date of amendment order: Sent on June 28, 1988
Target of amendment: Specification of the amendment: IF No. 1: This is a graph. ” will be deleted.
Claims (1)
部全面に亘って、ラケット本体全体の厚さに対し所定の
割合の肉薄の炭素繊維を素材とするシートを接合配設せ
しめたことを特徴とする卓球用ラケット。 ２、ラケット本体を形成する木質板として、一枚板の単
板を用いたことを特徴とする特許請求の範囲第１項記載
の卓球用ラケット。 ３、ラケット本体を形成する木質板として、複数枚の合
板を用いたことを特徴とする特許請求の範囲第１項記載
の卓球用ラケット。 ４、ラケット本体中央部に配設する所定厚さの炭素繊維
を素材とするシートとして、一枚のシートを用いたこと
を特徴とする特許請求の範囲第１項、第２項又は第３項
記載の卓球用ラケット。 ５、ラケット本体中央部に配設する所定厚さの炭素繊維
を素材とするシートとして、複数枚の合板シートを用い
たことを特徴とする特許請求の範囲第１項、第２項又は
第３項記載の卓球用ラケット。[Scope of Claims] 1. A thin sheet made of carbon fiber having a predetermined proportion of the total thickness of the racket body is provided over the entire central part in the thickness direction of the racket body formed of a wooden board. A table tennis racket characterized by a joint arrangement. 2. The table tennis racket according to claim 1, wherein a single veneer is used as the wooden board forming the racket body. 3. The table tennis racket according to claim 1, wherein a plurality of plywood sheets are used as the wooden boards forming the racket body. 4. Claims 1, 2, or 3, characterized in that a single sheet is used as the sheet made of carbon fiber with a predetermined thickness and arranged in the center of the racket body. The listed table tennis racket. 5. Claims 1, 2, or 3, characterized in that a plurality of plywood sheets are used as the sheet made of carbon fiber with a predetermined thickness and arranged in the center of the racket body. Table tennis racket as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083134A JPH01256983A (en) | 1988-04-06 | 1988-04-06 | Ping-pong racket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083134A JPH01256983A (en) | 1988-04-06 | 1988-04-06 | Ping-pong racket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01256983A true JPH01256983A (en) | 1989-10-13 |
Family
ID=13793729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63083134A Pending JPH01256983A (en) | 1988-04-06 | 1988-04-06 | Ping-pong racket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01256983A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0721075U (en) * | 1992-06-09 | 1995-04-18 | 皓耀 施 | Racket for table tennis |
| FR2883483A1 (en) * | 2005-03-22 | 2006-09-29 | Virginie Gamboa | Fibrous reinforcing plate for table tennis racket, has fibrous reinforcing frames constituted of carbon, aramid fiber or glass plates, where plates are covered by foam and rubber plates and frames are impregnated with thermosetting resin |
| JP2007260357A (en) * | 2006-03-30 | 2007-10-11 | Mizuno Technics Kk | Blade of table tennis racket |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215734A (en) * | 1975-07-24 | 1977-02-05 | Nippon Tatsukiyuu Kk | Table tennis racket |
| JPS5810773B2 (en) * | 1975-05-08 | 1983-02-28 | 富士写真フイルム株式会社 | Manufacturing method of magnetic recording material |
| JPS5833075B2 (en) * | 1979-07-07 | 1983-07-16 | 伏見蒲鉾株式会社 | food cutting machine |
-
1988
- 1988-04-06 JP JP63083134A patent/JPH01256983A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810773B2 (en) * | 1975-05-08 | 1983-02-28 | 富士写真フイルム株式会社 | Manufacturing method of magnetic recording material |
| JPS5215734A (en) * | 1975-07-24 | 1977-02-05 | Nippon Tatsukiyuu Kk | Table tennis racket |
| JPS5833075B2 (en) * | 1979-07-07 | 1983-07-16 | 伏見蒲鉾株式会社 | food cutting machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0721075U (en) * | 1992-06-09 | 1995-04-18 | 皓耀 施 | Racket for table tennis |
| FR2883483A1 (en) * | 2005-03-22 | 2006-09-29 | Virginie Gamboa | Fibrous reinforcing plate for table tennis racket, has fibrous reinforcing frames constituted of carbon, aramid fiber or glass plates, where plates are covered by foam and rubber plates and frames are impregnated with thermosetting resin |
| JP2007260357A (en) * | 2006-03-30 | 2007-10-11 | Mizuno Technics Kk | Blade of table tennis racket |
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