EP3785771B1 - Federballschläger - Google Patents

Federballschläger Download PDF

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Publication number
EP3785771B1
EP3785771B1 EP19793536.4A EP19793536A EP3785771B1 EP 3785771 B1 EP3785771 B1 EP 3785771B1 EP 19793536 A EP19793536 A EP 19793536A EP 3785771 B1 EP3785771 B1 EP 3785771B1
Authority
EP
European Patent Office
Prior art keywords
shaft
region
grip
frame
racket
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.)
Active
Application number
EP19793536.4A
Other languages
English (en)
French (fr)
Other versions
EP3785771A4 (de
EP3785771A1 (de
Inventor
Kazuya Otani
Akinori Sano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yonex KK
Original Assignee
Yonex KK
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 Yonex KK filed Critical Yonex KK
Publication of EP3785771A1 publication Critical patent/EP3785771A1/de
Publication of EP3785771A4 publication Critical patent/EP3785771A4/de
Application granted granted Critical
Publication of EP3785771B1 publication Critical patent/EP3785771B1/de
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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
    • 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
    • A63B49/08—Frames with special construction of the handle
    • 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
    • A63B60/02—Ballast means for adjusting the centre of mass
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0017—Training appliances or apparatus for special sports for badminton
    • 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
    • A63B2102/04—Badminton
    • 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
    • A63B60/42—Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand

Definitions

  • the present invention relates to a badminton racket provided with a shaft.
  • a badminton racket is constituted by a grip, an annular frame and a shaft which linearly extends and connects the grip and the annular frame each other.
  • the sectional shape and the dimension of the frame are altered in order to vary the weight and the balance point of the badminton racket.
  • Patent Literature 1 Japanese Unexamined Patent Publication No. 6-71001
  • JP 2000-093559 A discloses a sport pole member using a solid rod which may be embodied by a fishing rod and uses a reinforcing fibre having a specified Young's modulus as most of the reinforcing fibre directed in either one axial direction of the solid core material and the outer layer.
  • JP S 54-14829 A , JP 4-328380 B1 and CN 106984017 A also pertain to the field of the present invention.
  • the present invention relates to a badminton racket as claimed in claim 1.
  • the weight and the balance point of the badminton racket be adjustable at a location that does not affect the shape and the sectional structure of the frame to further enhance a degree of freedom in the adjustment.
  • the present invention was made in view of the aforementioned circumstances, and an object thereof is to provide a badminton racket capable of enhancing a degree of freedom in adjusting a weight and a balance point.
  • a badminton racket according to the present claim 1 is provided.
  • the hollow region is preferably formed in a region in which the shaft body is embedded in the grip.
  • the at least one solid region is formed in a region which includes a kick point in deflection of the shaft body.
  • the hollow regions are formed on opposite sides of the shaft body in an extending direction.
  • the solid region and the hollow regions are formed in the shaft body, and it is thus possible to enhance a degree of freedom in adjusting the weight and the balance point.
  • Figure 1 is a front view of a badminton racket according to the embodiment. Note that a part of the configuration may be omitted for convenience of explanation in each of the drawings described below.
  • a badminton racket (hereinafter, referred to as a "racket") 10 includes a grip 11 to be held by a player, a shaft 12 extending in a linear direction with one end side thereof coupled to the grip 11, and a frame 13 with an oval annular shape coupled to the other end side of the shaft 12.
  • a string 14 is extended in a tensioned state inside the frame 13, and the string 14 forms a hitting surface 15 to hit a shuttlecock.
  • the side on which the frame 13 is positioned in the longitudinal direction of the racket 10 will be defined as a top end side while the side on which the grip 11 is positioned will be defined as a rear end side as illustrated by the arrow in Figure 1 unless otherwise particularly indicated.
  • the direction that is orthogonal to the hitting surface 15 will be defined as a forward/backward direction, and further, the direction that is orthogonal to the longitudinal direction on the hitting surface 15 (that is, on the plane along the hitting surface 15) will be defined as a left-right direction.
  • the grip 11 and the shaft 12 are coupled to each other in a state in which the shaft 12 is inserted (embedded) into the grip 11 by a predetermined length and is secured thereto with an adhesive or the like.
  • the frame 13 is constituted by a hollow member having a predetermined wall thickness, and it is possible to employ various shapes such as a circular shape, an oval shape, and a square shape as a sectional shape thereof.
  • the frame 13 is formed using inner pressure shaping based on expansion of a medium such as air. Although it is possible to exemplify a method of forming the frame 13 by filling the inside thereof with a predetermined foaming material, the filling with the foaming material may be omitted at a part or an entirety of the frame 13.
  • the frame 13 and the shaft 12 are coupled to each other with a T-shaped joint 16 built therein in the racket 10.
  • FIG 2A is a sectional view illustrating an example of the shaft taken along the line A-A in Figure 1 .
  • the shaft 12 is configured of a coupling portion 21, into which a part of the joint 16 is inserted, at which the shaft 12 is coupled to the frame 13 (see Figure 1 ), and a shaft body 22 that forms a region except for the coupling portion 21.
  • hollow regions 23 and 24 are formed in opposite portions in the extending direction thereof, and a solid region 25 is formed in extending direction, between the hollow regions 23 and 24, in such a manner that where the solid region 25 is provided covers the center of the shaft body 22 in the extending direction.
  • Figure 2A illustrates one of the examples.
  • the hollow region 23 on the side of the grip 11 is formed in a region in which the shaft body 22 is embedded in the grip 11.
  • the shaft 12 causes deflection when the racket 10 hits the shuttlecock.
  • the position at which the shaft 12 causes the maximum deflection when the deformation occurs is defined as a kick point KP, and it is possible to hit back the shuttlecock by locally deflecting the shaft 12 at such a position.
  • the solid region 25 is formed in a region which includes the kick point KP.
  • thermosetting fiber-reinforced plastic fiber reinforced plastics; FRP.
  • FRP thermosetting fiber-reinforced plastic
  • the fiber-reinforced plastic is obtained by blending reinforcement fiber in a thermosetting resin such as epoxy or vinyl ester resin and semi-hardening the blended substances, and that the reinforcement fiber can be selected from among carbon fiber, glass fiber, organic fiber, ceramic fiber, and the like.
  • the hollow regions 23 and 24 and the solid region 25 in the shaft 12 it is possible to exemplify a method of providing a filling material at a portion corresponding to the solid region 25 in a cylindrical member.
  • the cylindrical member and the filling material may be made of the same material or different materials, the specific weights and rigidity of the materials may be the same as or different from each other.
  • the hollow regions 23 and 24 may be formed by trimming a solid round axial-shaped member at central axis positions on sides of end portions in the extending direction, and a non-cut portion may be formed as the solid region 25.
  • the hollow region 24 on the upper side (the side of the frame 13) in Figure 2A can be formed so as to be continuous with a space of the coupling portion 21 into which the joint 16 is inserted.
  • the hollow regions 23 and 24 and the solid region 25 are formed in the shaft body 22, it is possible to change the weight and the position of the center of gravity of the shaft 12 itself, and thus the weight and the balance point of the entire racket 10 can be adjusted by varying the lengths and the positions of the regions.
  • FIG 2B it is possible to locate the balance point on the top end side by extending the hollow region 23 on the side of the grip 11 and shortening the hollow region 24 on the side of the frame 13 as compared with those in Figure 2A . In this manner, it is possible to perform adjustment in a so-called top-heavy direction, to increase inertia moment at the time of swinging of the racket 10, and to enhance a resilient force at the time of hitting the shuttlecock.
  • shafts of badminton rackets made of metal or FRP are conventionally formed to be hollow.
  • the shaft is formed to be solid to secure strength while the diameter thereof is reduced in contrast with such a conventional structure, and since air resistance of the shaft at the time of swinging is reduced, it is thus possible to expect that swing-through performance is enhanced.
  • the balance point of the entire racket is positioned on the rear end (grip) side in this case, and it may not be possible to state that functions such as resilience performance are sufficient.
  • the hollow regions 23 and 24 and the solid region 25 are formed in the shaft body 22, the hollow region 23 is provided on the side of the grip 11 as in the aforementioned embodiment, and the weight corresponding to the hollow region 23 can thus be allocated to the top end side of the shaft body 22.
  • the weight corresponding to the hollow region 23 can thus be allocated to the top end side of the shaft body 22.
  • the kick point KP is in the solid region 25, it is possible to secure strength against deflection of the shaft at the time of hitting.
  • the embodiment it is possible to adjust the weight and the balance point depending on the inner structure of the shaft 12 and to avoid air resistance at the time of swinging as in the case of the attached sheet. Also, it is possible to prevent the appearance of the racket 10 from being affected and to prevent degradation with time and the like.
  • the lengths and the positions of the hollow regions 23 and 24 and the solid region 25 in the extending direction of the shaft body 22 are not limited to those in the illustrated configuration example and can be modified in various manners.
  • the hollow regions 23 and 24 provided at two locations herein may be formed at three or more locations, and a plurality of solid regions 25 may be formed. Alternatively, these may be formed with any one of the hollow regions 23 and 24 omitted.
  • the hollow regions 23 and 24 and the solid region 25 are formed to adjust the weight and the balance point, the solid region 25 may be partially formed at a location of the shaft 12 where strength is required, or in an opposite manner, the hollow regions 23 and 24 may be partially formed at locations where it is desirable to weaken the strength (it is desirable to increase deformation).
  • the coupling between the shaft 12 and the frame 13 is not limited to the aforementioned joint, and another coupling structure may be employed as long as it is possible to play badminton with it similarly to the racket 10 according to the aforementioned embodiment.
  • the present invention relates to a badminton racket capable of enhancing a degree of freedom in adjusting a weight and a balance point.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Claims (2)

  1. Badmintonschläger, umfassend:
    einen sich ringförmig erstreckenden Rahmen;
    einen Griff; und
    einen Schaft, der sich verlängert und den Griff und den Rahmen miteinander verbindet,
    wobei der Schaft (12) so ausgebildet ist, dass er einen hohlen Bereich (23, 24) an jeder der gegenüberliegenden Seiten in der Erstreckungsrichtung in einem Schaftkörper (22) mit Ausnahme des Kupplungsabschnitts (21) aufweist,
    wobei ein anderer Bereich als die hohlen Bereiche (23, 24) mit einem Füllmaterial versehen ist, um einen festen Bereich (25) in einem zylindrischen Element des Schafts (12) zu bilden, und
    wobei der massive Bereich (25) in einem Bereich ausgebildet ist, der einen Rückschlagpunkt bei der Durchbiegung des Schaftkörpers einschließt.
  2. Badmintonschläger nach Anspruch 1, wobei der hohle Bereich in einem Bereich ausgebildet ist, in dem der Schaftkörper in den Griff eingebettet ist.
EP19793536.4A 2018-04-27 2019-04-17 Federballschläger Active EP3785771B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018086015A JP7085399B2 (ja) 2018-04-27 2018-04-27 バドミントンラケット
PCT/JP2019/016398 WO2019208344A1 (ja) 2018-04-27 2019-04-17 バドミントンラケット

Publications (3)

Publication Number Publication Date
EP3785771A1 EP3785771A1 (de) 2021-03-03
EP3785771A4 EP3785771A4 (de) 2022-01-12
EP3785771B1 true EP3785771B1 (de) 2024-06-12

Family

ID=68294012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19793536.4A Active EP3785771B1 (de) 2018-04-27 2019-04-17 Federballschläger

Country Status (4)

Country Link
EP (1) EP3785771B1 (de)
JP (1) JP7085399B2 (de)
CN (1) CN112041037B (de)
WO (1) WO2019208344A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7424095B2 (ja) * 2020-02-18 2024-01-30 住友ゴム工業株式会社 バドミントンラケット

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414829A (en) * 1977-07-01 1979-02-03 Hitachi Chem Co Ltd Badminton racket shaft
CA2083738A1 (en) 1991-11-27 1993-05-28 Po-Jen Cheng Badminton racket
JP3582778B2 (ja) 1998-07-24 2004-10-27 ダイワ精工株式会社 中実杆を使用した竿杆
JP2003339279A (ja) * 1998-07-24 2003-12-02 Daiwa Seiko Inc 中実杆を使用したスポーツ用杆部材
US6361451B1 (en) * 1998-09-21 2002-03-26 Mide Technology Corporation Variable stiffness shaft
GB2428585B (en) * 2005-07-25 2007-08-01 Grays Of Cambridge Ltd Cricket bat
JP4328380B1 (ja) * 2008-10-09 2009-09-09 株式会社薫風 バドミントンラケット
JP5856005B2 (ja) 2011-04-26 2016-02-09 宜士 松本 農業用被覆材
CN106984017A (zh) * 2017-05-22 2017-07-28 邬惠林 一种基于减震拍杆的羽毛球拍
CN107297063A (zh) * 2017-06-28 2017-10-27 邬惠林 一种普通羽毛球拍增加突增攻击力功能的方法
CN208145372U (zh) * 2018-04-13 2018-11-27 袁俊 球拍

Also Published As

Publication number Publication date
WO2019208344A1 (ja) 2019-10-31
JP7085399B2 (ja) 2022-06-16
CN112041037A (zh) 2020-12-04
EP3785771A4 (de) 2022-01-12
EP3785771A1 (de) 2021-03-03
CN112041037B (zh) 2022-06-07
JP2019187956A (ja) 2019-10-31

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