WO1994026361A1 - Racket having very large string holes - Google Patents

Racket having very large string holes Download PDF

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Publication number
WO1994026361A1
WO1994026361A1 PCT/JP1994/000768 JP9400768W WO9426361A1 WO 1994026361 A1 WO1994026361 A1 WO 1994026361A1 JP 9400768 W JP9400768 W JP 9400768W WO 9426361 A1 WO9426361 A1 WO 9426361A1
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WIPO (PCT)
Prior art keywords
frame
gut
holes
hole
racket
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Application number
PCT/JP1994/000768
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French (fr)
Japanese (ja)
Inventor
Mitsuru Usui
Original Assignee
Mitsuru Usui
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsuru Usui filed Critical Mitsuru Usui
Priority to AU66905/94A priority Critical patent/AU6690594A/en
Publication of WO1994026361A1 publication Critical patent/WO1994026361A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/022—String guides on frames, e.g. grommets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/028—Means for achieving greater mobility of the string bed

Definitions

  • the present invention improves the gut hole of the racket in two ways, makes it easier to stretch the gut, and improves the hitting performance.
  • One meaning of the improvement is to make the size of the gut holes larger than the size of approximately three gats, with the upper limit being the diameter of the gat mesh diameter. .
  • the side surface of the hole is formed as a discontinuous surface with frame components.
  • a part that comes into contact with the gut comes into contact with the gut, it must be formed as a continuous surface and be formed with a curved surface such as a saddle so that the bent part does not appear in the gut that comes into contact with the frame.
  • the inside of the frame through which the gut penetrated was a space, so to speak, two small holes were made in the upper and lower plates, and the gut passed through it. And the gut tension was held only by the plate on the outer periphery of the frame called the “shelf".
  • the gut bends almost at right angles to the frame, and stress concentrates on the side of the frame at this bend, causing breakage and collapse of frame components called so-called “shelf drop". Easy to do.
  • the thickness of the top surface of the frame was necessary, which also hindered the quantification to some extent.
  • the conventional structure of the gut hole is a small hole formed in the upper and lower two plates.
  • the gut tension tends to concentrate on the upper surface of the frame, and the lower surface of the frame not only serves to prevent the gap from shifting, but also reduces the hitting performance.
  • the conventional gut hole has an upper limit of the diameter of only about three guts, and tightly fixes the gut to the frame. When fixed in this way, when hitting near the frame, the near-frame force is at a sharp angle with the frame, and excessive stress is concentrated on the short gut on the lower side of the frame. However, gut breakage was inevitable.
  • An object of the present invention is to eliminate all the drawbacks of the conventional gut hole described in the present invention. Disclosure of the invention
  • the structural features of the gut hole of the present invention are the three disclosed below. 1) “The gut hole is large enough to be molded integrally with the frame.” The portion of the gat hole near the outermost periphery of the frame is twice the width of the maximum gat mesh in the longitudinal direction of the frame. At the outermost periphery of the frame, the minimum is the size of the conventional gut hole and the maximum is the width of the gut mesh.
  • the gut hole is not formed later, but is formed integrally with the frame at the time of molding.
  • the portion of the frame where the frame and the gat are in contact is formed as a curved surface by the frame components, and does not form a corner that bends the gut. Therefore, between the two adjacent gut holes
  • the frame portion in the above forms a saddle portion, and the cross section of the hole in the frame longitudinal direction is a funnel-shaped and its size changes when viewed up and down. In these frames, the gut tension is well distributed on the surface of the frame.
  • the gutter hole's perimeter is the length of the gut mesh in the frame's longitudinal direction at the frame's perimeter.
  • the gut hole and the other portion face each other. This is similar to a configuration in which two legs of the same ladder are staggered facing each other, and a gut surface is formed by stretching a gut on that stage.
  • FIG. 1 shows an embodiment in which the number of gut holes is maximized, and the length of the gut holes in the longitudinal direction of the frame at the inner periphery of the frame ft is equal to the gut mesh.
  • the width of the funnel-shaped gut hole at the outermost periphery of the frame is twice the width of the gut mesh.
  • FIG. 2 is a side view of the embodiment of FIG. You can see that the gut is curved at all, not at the frame.
  • FIG. 3 shows the arrangement of the gut holes in the frame facing portion.
  • the gutter holes are not drilled in a one-to-one correspondence like the conventional force-gear holes: the opposite sides of the frame have gutters, gutter holes and frame gutters. Frame and force; one-to-one correspondence.
  • FIG. 4 is a cross-sectional view at the center of the gut hole of FIG.
  • the gutter hole at the top of the frame is also large enough, the force catch is loosely fixed to the frame and has a large movable range.
  • the best embodiment is, as it were, a configuration in which a number of small pipes serving as gut suspension parts are passed over two pipe frames.
  • the gut hole is the surface of the frame, and the frame portion forming the hole bears the overall strength. Therefore, except for the part that directly receives the gut, the frame thickness is formed sufficiently thin to reduce the weight.
  • gutter holes are integrally molded with the frame, eliminating any secondary work on the gutter holes.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Wire Processing (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

A racket wherein string holes are made large enough for a finger to pass therethrough in order to obviate a necessity of using grommets while increasing the strength of a frame thereof by making the side surface of the holes a continuous surface, easily setting strings, and increase the ball striking performance by expanding a range in which strings can move in the vicinity of the frame. In the configuration of the present invention, adjacent string holes in a conventional racket are integrated into a large string hole and string holes are not conventional opposed ones but are those which alternately confront each other by offsetting string holes at opposed positions by one string mesh size. Consequently, the number of string holes is reduced to about a half of that of the conventional racket. In addition, the holes are constituted by a continuous surface by a frame constituent member.

Description

明 細 非常に大き なガッ ト孔を持つラ ケ ッ ト  Description Racket with very large gut holes
技術分野 Technical field
こ の発明は、 ラ ケ ッ トのガッ ト孔を 、 2 つの意味で改良 し 、 ガッ ト張 設を容易に し 、 且つ打球性能を向上させる事に鬨する ，  The present invention improves the gut hole of the racket in two ways, makes it easier to stretch the gut, and improves the hitting performance.
改良の 1 つの意味は、 ガッ ト孔の大き さ をおよ そガッ ト 3 本が楽に通 るほどの大き さ よ り大き く する事で、 上限はガッ ト メ ッ シュの直径の円 である 。  One meaning of the improvement is to make the size of the gut holes larger than the size of approximately three gats, with the upper limit being the diameter of the gat mesh diameter. .
も う 1 つの意味は、 孔の側面を フ レーム構成部材などで違続面で形成 する事である 。 特にガッ ト と接蝕する部分に鬨しては必ず連続面と し 、 且つ鞍部のよ う な曲面で形成し、 フ レーム と接する ガッ ト に屈曲部が出 来ないよ う に工夫する 。  Another meaning is that the side surface of the hole is formed as a discontinuous surface with frame components. In particular, if a part that comes into contact with the gut comes into contact with the gut, it must be formed as a continuous surface and be formed with a curved surface such as a saddle so that the bent part does not appear in the gut that comes into contact with the frame.
背景技術 Background art
従来のガッ ト孔には、 その工作方法と構成そのも の と に起因する幾つ かの欠点が指摘出来る 。  Some drawbacks can be pointed out in the conventional gut hole due to its machining method and configuration.
φ Γ ガッ ト孔の工作方法に起因する欠点」 Defects due to φ Γ gutter hole machining method ”
従来のガッ ト孔はパイ ァフ レーム成形後、 ド リル穿孔されていた フ レームの設計強度は穿孔によ り 低下するのでこれを見越した フ レ ーム 成形が成され、 これが、 ある程度フ レームの輊量化を妨げていた 。  In conventional gutter holes, after frame formation, the design strength of the drilled frame is reduced by drilling, so frame formation is performed in anticipation of this, and to some extent this is achieved. Was preventing the amount of stalks from rising.
また、 ガッ トが貫通している フ レーム内部は空間であ り 、 いわば、 上 下 2 枚の板に小さな穴が 2 つ開けられ、 そこ をガッ トが通っていた 。 そ して 、 ガッ ト張力は 「棚」 と 呼ばれる フ レーム外周部の板だけが受け持 つていた。 フ レーム上面では、 ガッ トはフ レーム と ほぽ直角に屈曲 し 、 こ の屈曲部 のフ レーム緣辺に応力が集中 し 、 いわゆる 「棚落ち 」 と 呼ばれる フ レー ム構成部材の破断陥没が発生しやすかつた。 これを避けるべく 、 フ レー ム上面の厚みが必要で、 これも ある程度輊量化を妨げた。 Also, the inside of the frame through which the gut penetrated was a space, so to speak, two small holes were made in the upper and lower plates, and the gut passed through it. And the gut tension was held only by the plate on the outer periphery of the frame called the "shelf". On the upper surface of the frame, the gut bends almost at right angles to the frame, and stress concentrates on the side of the frame at this bend, causing breakage and collapse of frame components called so-called "shelf drop". Easy to do. In order to avoid this, the thickness of the top surface of the frame was necessary, which also hindered the quantification to some extent.
更に、 ガッ ト屈曲部での力'ッ ト切れの防止と ガッ トのガイ ド を兼ね、 細 長い複雑な形状のグルメ ッ トが不可欠だった。 Furthermore, it was indispensable to use a slender and complex shaped gourmet that doubled as a guide for the gut and to prevent breakage of the force at the gut bend.
② 「ガッ ト孔の構成に起因する欠点」  ② “Defects due to gut hole configuration”
既に指摘した如く 、 従来のガッ ト孔の構成は、 上下 2 枚の板に開けら れた小さな孔だつた。  As already pointed out, the conventional structure of the gut hole is a small hole formed in the upper and lower two plates.
こ の構成上、 ガッ ト張力はフ レーム上面に集中 しやすく 、 フ レーム下 面はガッ トのズレ止めに過ぎないだけで無く 、 打球性能を低下させた。 何故な ら 、 従来のガッ ト孔は、 その直径の上限が大体ガッ ト 3 本が通る 太さ に過ぎず、 ガッ ト を フ レームに緊密に固定したからである 。 このよ う に固定される と 、 フ レーム近傍での打撃において 、 フ レーム近傍力 'ッ トはフ レーム と 急な角度を成し 、 短いガッ ト にフ レーム下面緣辺で過大 応力が集中 し 、 ガッ ト切れが避けられなかった。  With this configuration, the gut tension tends to concentrate on the upper surface of the frame, and the lower surface of the frame not only serves to prevent the gap from shifting, but also reduces the hitting performance. The reason for this is that the conventional gut hole has an upper limit of the diameter of only about three guts, and tightly fixes the gut to the frame. When fixed in this way, when hitting near the frame, the near-frame force is at a sharp angle with the frame, and excessive stress is concentrated on the short gut on the lower side of the frame. However, gut breakage was inevitable.
ま た 、 言う までも な く 、 細いガッ ト孔には特にガッ トの 2 本通しは困 難だつた。 本発明 に述べた従来のガッ ト孔の欠点を全て解消する事を 目 的と する 。 発明の開示  Needless to say, it was difficult to pass two guts through the narrow gut hole. An object of the present invention is to eliminate all the drawbacks of the conventional gut hole described in the present invention. Disclosure of the invention
本発明では、 フ レ ーム成形技術の向上に期待 し 、 非常に大き なガッ ト 孔を最初から フ レーム と 一体成形する 。  In the present invention, with the expectation of an improvement in the frame forming technique, a very large gut hole is integrally formed with the frame from the beginning.
本発明のガッ ト孔の構成上の特徴は次に開示される 3 つである 。 1 ) 「ガッ ト孔は十分に大き く 、 フ レーム と 一体成形される 」 ガッ ト孔のフ レーム最外周部に近い部分は、 フ レーム長手方向に最大 ガッ トメ ッ シ ュの 2 倍の幅を持ち 、 フ レーム最內周部では、 最小が従来 のガッ ト孔の大き さから最大がガッ ト メ ッ シュの幅と な り う る 。 The structural features of the gut hole of the present invention are the three disclosed below. 1) “The gut hole is large enough to be molded integrally with the frame.” The portion of the gat hole near the outermost periphery of the frame is twice the width of the maximum gat mesh in the longitudinal direction of the frame. At the outermost periphery of the frame, the minimum is the size of the conventional gut hole and the maximum is the width of the gut mesh.
ガッ ト孔は後から開けられるのではなく 、 フ レームの成形と 问時に一体 成形される 。 The gut hole is not formed later, but is formed integrally with the frame at the time of molding.
2 ) 「 フ レーム と ガッ ト の接触部分は曲面である j  2) “The contact between the frame and the gut is a curved surface.
フ レーム と ガッ ト と が接触している フ レーム部分は フ レーム構成部材 で曲面と して構成され、 ガッ ト を屈曲させる角 を作らない， 従って 、 隣 り合った 2 つのガッ ト孔の間にある フ レーム部分は鞍部を形成し 、 孔の フ レーム長手方向の断面は漏斗状で上下に見て その大き さ が変化する 。 こ う したフ レームではガッ ト張力はフ レーム表面に う ま く 分散される 。  The portion of the frame where the frame and the gat are in contact is formed as a curved surface by the frame components, and does not form a corner that bends the gut. Therefore, between the two adjacent gut holes The frame portion in the above forms a saddle portion, and the cross section of the hole in the frame longitudinal direction is a funnel-shaped and its size changes when viewed up and down. In these frames, the gut tension is well distributed on the surface of the frame.
3 ) 「 ガッ ト孔の配置がフ レーム対向部分で交互である 」  3) "Gut holes are arranged alternately at the frame-facing portion."
これは、 最大のガッ ト孔に した有利な実施例の場合で、 ガッ ト孔の犒 は、 フ レーム最內周部で、 フ レーム長手方向にガッ ト メ ッ シュの長さ に なる 。 この場合、 フ レーム対向部分ではガッ ト孔と そ う でない部分と が 正対する 。 これは、 丁度、 2 脚の同 じ梯子の段を互い違いに向かい合わ せた構成に似てお り 、 その段にガッ ト張設してガッ ト面は構成される ， 図面の簡単な説明  This is the case of the preferred embodiment with the largest gut hole, where the gutter hole's perimeter is the length of the gut mesh in the frame's longitudinal direction at the frame's perimeter. In this case, in the frame-facing portion, the gut hole and the other portion face each other. This is similar to a configuration in which two legs of the same ladder are staggered facing each other, and a gut surface is formed by stretching a gut on that stage.
第 1 図は、 ガッ ト孔を最大に した場合の実施例であ り 、 フ レーム ft内 周部でのフ レーム長手方向のガッ ト孔の懾はガッ ト メ ッ シュ に等しい。 またフ レーム最外周部での漏斗状に広がったガッ ト孔の幅はガッ ト メ ッ シュの 2 倍である 。  FIG. 1 shows an embodiment in which the number of gut holes is maximized, and the length of the gut holes in the longitudinal direction of the frame at the inner periphery of the frame ft is equal to the gut mesh. The width of the funnel-shaped gut hole at the outermost periphery of the frame is twice the width of the gut mesh.
第 2 図は、 第 1 図の実施例の側面図である 。 ガッ トが^架部分で全く 屈曲せず、 曲線を描いて いる様子が分かる 。 第 3 図は、 フ レーム対向部分でのガッ ト孔の配置を示す。 ガッ ト孔は 従来の力'ッ ト孔のよ う に 1 対 1 対応に正対して開けられてはいない ： フ レームの正対する対向部には、 ガ、 ト孔と フ レームのガッ ト恝架部分と 力； 1 対 i 対応している 。 FIG. 2 is a side view of the embodiment of FIG. You can see that the gut is curved at all, not at the frame. FIG. 3 shows the arrangement of the gut holes in the frame facing portion. The gutter holes are not drilled in a one-to-one correspondence like the conventional force-gear holes: the opposite sides of the frame have gutters, gutter holes and frame gutters. Frame and force; one-to-one correspondence.
第 4 図は、 苐 1 [ のガッ ト孔の中心部における断面図である 。 フ レー ム最內周ガッ ト孔も十分に大き く 、 力'ッ ト はフ レームにルーズに固定さ れ、 大きな可動範囲を持ってい る 。 発明を実施するための最良の形態  FIG. 4 is a cross-sectional view at the center of the gut hole of FIG. The gutter hole at the top of the frame is also large enough, the force catch is loosely fixed to the frame and has a large movable range. BEST MODE FOR CARRYING OUT THE INVENTION
第 1 図に示した如く 、 最良の実施例は、 いわば 2 本のパイ ァフ レーム にガッ ト懸架部分と なる小さなパイ ァを幾つも渡した形態を と る 。  As shown in FIG. 1, the best embodiment is, as it were, a configuration in which a number of small pipes serving as gut suspension parts are passed over two pipe frames.
複雜な内部空間を持つ中空フ レームが成形出来れば十分な輊量化も可能 である 。 こ の フ レームにおいてガッ ト孔はフ レームの表面であ り 、 孔を 形成する フ レ ーム部分は、 全体の強度を受け持つ。 従って 、 ガッ ト を直 接受け持つ部分以外はフ レーム厚を十分に薄く 成形し 、 軽置化を図る 産業上の利用可能性 If a hollow frame with a complex internal space can be formed, it is possible to achieve a sufficient amount of crosstalk. In this frame, the gut hole is the surface of the frame, and the frame portion forming the hole bears the overall strength. Therefore, except for the part that directly receives the gut, the frame thickness is formed sufficiently thin to reduce the weight.
ラ ケ ッ ト製造上の利点は、 ガッ ト孔を フ レーム と共に一体成形するの で、 ガッ ト孔に関するあ らゆる 2 次的な工作を省ける事である 。  An advantage in racket manufacturing is that the gutter holes are integrally molded with the frame, eliminating any secondary work on the gutter holes.
ラ ケ ッ トの打球性能上の利点の 1 つは、 ガッ ト及びフ レームに応力の集 中部が無く 、 ガッ ト切れが减る事である 。 また、 フ レーム緣辺部での打 擊において も 、 ガッ トのルーズな固定法によ り 、 ガッ ト の伸縮 ' 変形な どの衝擎対応が柔軟にな り 好ま しい反発性能を発揮する 。 One of the advantages of the racket in terms of ball hitting performance is that the gut and frame have no stress central part and the gut breaks. Also, when hitting on the sides of the frame, the loose fixing method of the gut makes the guts flexible and flexible, and provides favorable resilience performance.

Claims

a 求 の 範 囲 a Range of request
1 . フ レーム形状やガッ ト張設様式の如何を問わず、 ガッ ト孔乃至はガ ッ トガイ ド清の大き さ を 、 1 つの孔などの一部であって も 、 およ そガッ 卜が 3本以上问時に通過出来る程度よ り大き く し 、 フ レーム成形と 问時 に一体成形する よ う 構成されたガッ ト孔を持つラケ ッ ト 1. Regardless of the frame shape or the type of gut extension, the size of the gut hole or gut guide cleaning is limited even if it is a part of one hole or the like. Three or more racks with gutter holes that are large enough to be able to pass at a time and are formed so that they can be molded together with the frame
2 . 請求項 1 に鬨わるガッ ト孔の、 特にガッ ト と フ レーム と が接触する 部分を フ レーム構成部材からなる連続曲面で構成されたガッ ト孔を持つ ラケ ッ 卜。  2. A bracket having a gut hole, which has a continuous curved surface made of a frame constituent member, particularly at a portion where the gut and the frame come into contact with each other.
3 . フ レーム最內周において フ レーム長手方向の幅が丁度ガッ ト メ ッ シ ュの大き さの請求項 1 、 2 に関わるガッ ト穴を 、 ガッ ト面を隔てて対向 する フ レームの同 じ部分で互い違いに開けて配置されたガッ ト孔を持つ ラケ ッ ト 。  3. At the outermost circumference of the frame, the width of the frame in the longitudinal direction of the frame is exactly the same as the size of the gut mesh, so that the gut hole according to claims 1 and 2 is the same as that of the opposite frame across the gut surface. A rack with gut holes staggered in the same area.
PCT/JP1994/000768 1993-05-14 1994-05-12 Racket having very large string holes WO1994026361A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66905/94A AU6690594A (en) 1993-05-14 1994-05-12 Racket having very large string holes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5/148199 1993-05-14
JP5148199A JPH06319833A (en) 1993-05-14 1993-05-14 Racket having very large gut hole

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AU (1) AU6690594A (en)
WO (1) WO1994026361A1 (en)

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JP6943608B2 (en) * 2017-05-11 2021-10-06 ヨネックス株式会社 racket

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JPS61127765U (en) * 1985-01-31 1986-08-11
JPS6343679A (en) * 1986-08-08 1988-02-24 臼井　満 Ultralight weight racket assembled from some frame parts engaged and bonded under pressure by gut tension

Patent Citations (2)

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JPS61127765U (en) * 1985-01-31 1986-08-11
JPS6343679A (en) * 1986-08-08 1988-02-24 臼井　満 Ultralight weight racket assembled from some frame parts engaged and bonded under pressure by gut tension

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006519050A (en) * 2003-02-28 2006-08-24 プリンス、スポーツ、インコーポレーテッド Sports racket with frame opening
US7309299B2 (en) 2003-02-28 2007-12-18 Mauro Pezzato Sports racquet with frame openings
AU2004216406B2 (en) * 2003-02-28 2010-01-28 Prince Sports, Inc. Sports racquet with frame openings
WO2004075996A3 (en) * 2003-02-28 2004-11-25 Prince Sports Inc Sports racquet with frame openings
US7727096B2 (en) 2005-07-18 2010-06-01 Prince Sports, Inc. Composite hockey stick system
US7396303B2 (en) 2005-11-29 2008-07-08 Prince Sports, Inc. Sports racquet with insert members for anchoring strings
US7503860B2 (en) 2005-11-29 2009-03-17 Prince Sports, Inc. Sports racquet with multi-section frame
US8889056B2 (en) 2005-12-14 2014-11-18 Prince Sports, Llc. Sports racquet with string port holes
US7935286B2 (en) 2005-12-14 2011-05-03 Prince Sports, Inc. Sports racquet with string port holes
US7811500B2 (en) 2006-04-11 2010-10-12 Prince Sports, Inc. Method for manufacturing a sports racquet
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
EP1862201A1 (en) * 2006-05-29 2007-12-05 Prince Sports, Inc. Hockey stick having a single, hollow primary tube
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

Also Published As

Publication number Publication date
JPH06319833A (en) 1994-11-22
AU6690594A (en) 1994-12-12

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