EP3785771A1 - Raquette de badminton - Google Patents
Raquette de badminton Download PDFInfo
- Publication number
- EP3785771A1 EP3785771A1 EP19793536.4A EP19793536A EP3785771A1 EP 3785771 A1 EP3785771 A1 EP 3785771A1 EP 19793536 A EP19793536 A EP 19793536A EP 3785771 A1 EP3785771 A1 EP 3785771A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- region
- frame
- grip
- hollow
- 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.)
- Granted
Links
- 239000007787 solid Substances 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Images
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
- 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 includes: a frame extending in an annular shape; a grip; and a shaft which extends and connects the grip and the frame each other, and the shaft is formed to have at least one hollow region in a shaft body except for a coupling portion, at which the shaft is coupled to the frame, and to have at least one solid region which is arranged with the at least one hollow region in an extending direction.
- 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 preferably formed in a region which includes a kick point in deflection of the shaft body.
- the hollow regions are preferably formed on opposite sides of the shaft body in an extending direction. With this configuration, it is possible to set the position of the center of gravity of the shaft itself at the center in the 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)
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 (fr) | 2018-04-27 | 2019-04-17 | Raquette de badminton |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3785771A1 true EP3785771A1 (fr) | 2021-03-03 |
EP3785771A4 EP3785771A4 (fr) | 2022-01-12 |
EP3785771B1 EP3785771B1 (fr) | 2024-06-12 |
Family
ID=68294012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19793536.4A Active EP3785771B1 (fr) | 2018-04-27 | 2019-04-17 | Raquette de badminton |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3785771B1 (fr) |
JP (1) | JP7085399B2 (fr) |
CN (1) | CN112041037B (fr) |
WO (1) | WO2019208344A1 (fr) |
Families Citing this family (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5414829A (en) * | 1977-07-01 | 1979-02-03 | Hitachi Chem Co Ltd | Badminton racket shaft |
ATE129913T1 (de) | 1991-11-27 | 1995-11-15 | Wilson Sporting Goods | Badmintonschläger. |
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 |
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 |
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 |
-
2018
- 2018-04-27 JP JP2018086015A patent/JP7085399B2/ja active Active
-
2019
- 2019-04-17 WO PCT/JP2019/016398 patent/WO2019208344A1/fr unknown
- 2019-04-17 CN CN201980027975.4A patent/CN112041037B/zh active Active
- 2019-04-17 EP EP19793536.4A patent/EP3785771B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
EP3785771A4 (fr) | 2022-01-12 |
CN112041037A (zh) | 2020-12-04 |
JP2019187956A (ja) | 2019-10-31 |
WO2019208344A1 (fr) | 2019-10-31 |
EP3785771B1 (fr) | 2024-06-12 |
JP7085399B2 (ja) | 2022-06-16 |
CN112041037B (zh) | 2022-06-07 |
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