CN103961849B - Racket frame - Google Patents
Racket frame Download PDFInfo
- Publication number
- CN103961849B CN103961849B CN201410037696.5A CN201410037696A CN103961849B CN 103961849 B CN103961849 B CN 103961849B CN 201410037696 A CN201410037696 A CN 201410037696A CN 103961849 B CN103961849 B CN 103961849B
- Authority
- CN
- China
- Prior art keywords
- racket
- prepreg
- enhancement layer
- fiber
- elasticity
- 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
Links
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
- A63B49/14—Protection devices on the frame
-
- 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
- A63B49/10—Frames made of non-metallic materials, other than wood
-
- 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
-
- 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
-
- 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
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Golf Clubs (AREA)
- Laminated Bodies (AREA)
Abstract
The racket head (4) of racket frame has string of a musical instrument groove (20).Racket head (4) includes side enhancement Layer (18).Each side enhancement Layer (18) is formed by prepreg, and this prepreg includes carbon fiber and matrix resin.The modulus of elasticity in comperssion of prepreg equals to or less than 100GPa.The tensile modulus of elasticity of prepreg equals to or less than 100GPa.The tensile modulus of elasticity of carbon fiber equals to or less than 160GPa.It is preferred that this prepreg includes amorphous carbon fiber.
Description
The Japanese patent application No.2013-16360 that the present invention is directed to submit on January 31st, 2013 proposes priority request,
The full content of earlier application is incorporated by reference herein.
Technical field
The present invention relates to a kind of racket frame for tennis etc..In particular it relates to for the string of a musical instrument of racket frame
The improvement of the enhancement Layer of groove (gut groove).
Background technology
The framework of tennis racket is formed by fiber-reinforced resin.The matrix resin of fiber-reinforced resin is epoxy resin.Fiber reinforcement
The fiber of resin is carbon fiber.Described fiber is long fibre.It is pre-that framework is included in each by the multiple prepregs of winding solidification
Epoxy resin in leaching material is formed.The racket frame formed by fiber-reinforced resin has been disclosed in JP2011-15885.
Racket frame has string of a musical instrument groove.The part in the outside that cord is positioned at framework is received in string of a musical instrument groove.By string of a musical instrument groove
Prevent the infringement of cord.
General framework includes enhancement Layer.Enhancement Layer is by the matrix resin generally extended at thickness direction and a large amount of carbon fiber shape
Become.When cross hit, a significant power puts on string of a musical instrument groove by cord.Prevent from causing due to this power by enhancement Layer
The breakage of framework.
When ball hits near the happy district (sweet spot) of racket or happy district, club is with transmitted at high speed.When ball hits
Time near the happy district of racket or happy district, it is little for being transferred to athletic impulsive force.
In existing racket, when ball hits away from the position in the happy district of racket, ball is launched with low speed.At this racket
In, when ball hits the position away from happy district, it is big for being transferred to athletic impulsive force.Therefore, hit far when ball
When the position in happy district, athlete can not swing racket completely.Additionally, when ball hits the position away from happy district, fortune
Mobilization can not maintain the direction of striking surface.
When impacting, athlete's purpose is near happy district or happy district to bat.But, in play,
Athlete sometimes must be in the position batting away from happy district.Desired racket be when ball hits the position away from happy district still
So there is fabulous resilience force.
It is an object of the invention to provide the ball also with fabulous resilience force when ball hits away from the position in the happy district of racket
Racket frame.
Summary of the invention
Racket frame according to the present invention includes the racket head formed by fiber-reinforced resin.Racket head includes the reinforcement for string of a musical instrument groove
Layer.Enhancement Layer is formed by prepreg, and this prepreg includes fiber and matrix resin.The modulus of elasticity in comperssion of prepreg is equal to
Or less than 100GPa.
It is preferred that the tensile modulus of elasticity of prepreg is equal to or less than 100GPa.
The racket head formed by fiber-reinforced resin is included according to another racket frame invented.Racket head includes for string of a musical instrument groove
Enhancement Layer.Enhancement Layer is formed by prepreg, and this prepreg includes fiber and matrix resin.The tensile modulus of elasticity of fiber is equal to
Or less than 160GPa.Near the basal surface of string of a musical instrument groove, the carbon fiber of enhancement Layer prolongs on the thickness direction of racket frame
Stretch.
Racket frame according to yet another invention includes the racket head formed by fiber-reinforced resin.Racket head includes for the string of a musical instrument
The enhancement Layer of groove.Enhancement Layer includes amorphous carbon fiber and matrix resin.
Using according in the racket of the framework of the present invention, when ball hits the position away from happy district, the coefficient of resilience is higher.
When ball hits the position away from happy district, the operability of framework is fabulous.
Accompanying drawing explanation
Fig. 1 is the front view of racket frame according to an embodiment of the invention.
Fig. 2 is the side view of the racket frame in Fig. 1.
Fig. 3 is the viewgraph of cross-section of the amplification along the III-III line in Fig. 1.
Fig. 4 is the viewgraph of cross-section along the IV-IV line in Fig. 3；With
Fig. 5 is the viewgraph of cross-section showing the racket frame in Fig. 3 and ring with cord.
Detailed description of the invention
The present invention according to preferred embodiment below will be described in detail with reference to the accompanying drawings.
Display racket frame 2 in fig 1 and 2 includes racket head 4, Liang Ge throat 6, dabber 8 and handle 10.Ring, bat
Grip strip, end cap etc. attach to racket frame 2, and line extends on racket frame 2 thus obtains the ball for standard ball tennis
Clap.In FIG, above-below direction is the axis direction of racket frame 2, and left and right directions is the width of racket frame 2.
Racket frame 2 is formed by fiber-reinforced resin.The matrix resin of fiber-reinforced resin is thermosetting resin.Thermosetting tree
Fat is typically epoxy resin.The fiber of fiber-reinforced resin is typically carbon fiber.This fiber is long fibre.Such as Fig. 3 institute
Show it should be evident that racket frame 2 is hollow.It is included in each prepreg by being wound around multiple prepregs solidification
Thermosetting resin, forms racket frame 2.
Racket head 4 forms the profile of striking surface.The front shape of racket head 4 is generally oval.Oval long axis direction and racquet frame
The axis direction of frame 2 is consistent.Oval short-axis direction is consistent with the width of racket frame 2.One end of each throat 6
It is connected to racket head 4.Each throat 6 is connected to another throat 6 near the other end of another throat 6.Throat 6
Dabber 8 is extended to from racket head 4.Dabber 8 is connected to position each other from Liang Ge throat 6 and extends.Dabber 8 is formed so that whole
It is connected to throat 6 body.Handle 10 is formed to be integrally attached to dabber 8.Racket head 4 is clipped between Liang Ge throat 6
Part is yoke portion 12.
As illustrated in fig. 1 and 2, racket head 4 includes crown-reinforcing 14, yoke portion enhancement Layer 16 and both sides enhancement Layer 18.?
In Fig. 1 and 2, reference marker P1 represents the boundary point between crown-reinforcing 14 and each side enhancement Layer 18, with reference to mark
Note P2 represents the boundary point between yoke portion enhancement Layer 16 and each side enhancement Layer 18.
Fig. 3 is the viewgraph of cross-section of the amplification along the III-III line in Fig. 1.Fig. 4 is along the IV-IV line in Fig. 3
Viewgraph of cross-section；In figure 3, left side is the outside of racket head 4, and right side is the inner side of racket head 4.As it is shown on figure 3, clap
4 have string of a musical instrument groove 20.String of a musical instrument groove 20 is formed on the outer surface of racket head 4.String of a musical instrument groove 20 has both side surface 22 He
One basal surface 24.As in figure 2 it is shown, string of a musical instrument groove 20 is along the circumferencial direction extension of racket head 4.
Fig. 3 and 4 display side enhancement Layer 18.Side enhancement Layer 18 is formed by prepreg.The matrix resin of prepreg is asphalt mixtures modified by epoxy resin
Fat.Prepreg includes a large amount of carbon fiber.Each carbon fiber is in the substantially thickness direction (right and left in Fig. 2 of racket frame 2
To) upper extension.Side enhancement Layer 18 is formed with hardening epoxy resin by heating prepreg.Crown-reinforcing 14 and yoke portion add
Strong layer 16 is formed by solidifying the epoxy resin of other prepregs.
Fig. 5 shows racket head 4 and ring 26 and line 28.Ring 26 includes flange 30 and pipe 32.Flange 30 and string of a musical instrument groove 20
Basal surface 24 contact.Pipe 32 extends through racket head 4.A part for line 28 is arranged on flange 30 and circumferentially
Direction.Additionally, line 28 extends through pipe 32.
When tennis hits racket, power puts on string of a musical instrument groove 20 by line 28.Side enhancement Layer 18 is arranged to around string of a musical instrument groove
20.Near the basal surface 24 of string of a musical instrument groove 20, the carbon fiber of side enhancement Layer 18 is on the thickness direction of racket frame 2
Extend.Side enhancement Layer 18 strengthens string of a musical instrument groove 20.When tennis hits racket, side enhancement Layer 18 prevents racket head 4 by breakage.
Be similar to, the carbon fiber of crown-reinforcing 14 and yoke portion enhancement Layer 16 also near the basal surface 24 of string of a musical instrument groove 20 at racket
Extend on the thickness direction of framework 2.When tennis hits racket, crown-reinforcing 14 and yoke portion enhancement Layer 16 are also prevented from racket head
4 by breakage.
The modulus of elasticity in comperssion of the prepreg of side enhancement Layer 18 is less than the compression of the prepreg of the enhancement Layer of existing racket frame
Elastic modelling quantity.Plasticity including the racket head 4 of side enhancement Layer 18 is fabulous.
When tennis hits near happy district or happy district, line 28 extends fully.By elongation, absorb impact.?
After elongation, line 28 is back to original shape.By this return, tennis is with transmitted at high speed.
When tennis hits the position away from happy district, the elongation of line 28 is not sufficient.As it has been described above, side enhancement Layer 18
The modulus of elasticity in comperssion of prepreg relatively low.Therefore, when tennis hits the position away from happy district, racket head 4 and line 28
Deform together.By this deformation, absorb impact.Athlete can swing racket while maintaining the direction of striking surface completely.
After a deformation, racket head 4 is back to the shape of its original.By this return, tennis is with transmitted at high speed.
In this racket, when tennis hits the position away from happy district, insufficient by compensating line 28 of the deformation of racket head 4
Deformation.When tennis hits the position away from happy district, the shock absorbing capability of racket frame 2, operability and resilience force
It is fabulous.The happy district of racket frame is wider.
As it has been described above, when tennis hits near happy district or happy district, line 28 extends fully.Therefore, by waving
Hit that to be applied to the power of racket frame 2 less.Racket head 4 is less due to the deformation produced of hitting.In this racket, when tennis hits
Time near middle happy district or happy district, too much deformation does not occur.
In the present embodiment, the modulus of elasticity in comperssion of the prepreg of crown-reinforcing 14 is higher than the pre-of each side enhancement Layer 18
The modulus of elasticity in comperssion of leaching material, the modulus of elasticity in comperssion of the prepreg of yoke portion enhancement Layer 16 is higher than each side enhancement Layer 18
The modulus of elasticity in comperssion of prepreg.The modulus of elasticity in comperssion of the prepreg of crown-reinforcing 14 can be equal to each side enhancement Layer
The modulus of elasticity in comperssion of the prepreg of 18.The modulus of elasticity in comperssion of the prepreg of yoke portion enhancement Layer 16 can add equal to each side
The modulus of elasticity in comperssion of the prepreg of strong layer 18.
Vertical line and x wire are formed by line 28.As it has been described above, the front shape of racket head 4 is generally oval, oval length
Direction of principal axis is consistent with the axis direction of racket frame 2.Therefore, the length of average vertical line is more than the length of average transverse line.
Generally, vertical line is more prone to elongation than x wire.In order to compensate the elongation difficulty of x wire, preferably: there is low pressure
The prepreg of contracting elastic modelling quantity is used for each side enhancement Layer 18；The prepreg with high modulus of elasticity in comperssion is used for top
Enhancement Layer 14；The prepreg with high modulus of elasticity in comperssion is used for yoke portion enhancement Layer 16.
The elasticity of compression mould of the prepreg of the modulus of elasticity in comperssion of the prepreg of each side enhancement Layer 18 and crown-reinforcing 14
The ratio of amount is preferably equal to or less than 75%, be more preferably equal to or less than 50%, particularly preferably equal to or
Less than 25%.In view of the intensity of racket frame 2, this ratio is preferably equal to or more than 10%.
The elasticity of compression mould of the prepreg of the modulus of elasticity in comperssion of the prepreg of each side enhancement Layer 18 and yoke portion enhancement Layer 16
The ratio of amount is preferably equal to or less than 75%, be more preferably equal to or less than 50%, particularly preferably equal to or
Less than 25%.In view of the intensity of racket frame 2, this ratio is preferably equal to or more than 10%.
In view of impact absorbing, operability and resilience, the modulus of elasticity in comperssion of the prepreg of each side enhancement Layer 18 is relatively
Goodly equal to or less than 100GPa, more be preferably equal to or less than 65GPa, particularly preferably equal to or less than
35GPa.In view of the intensity of racket frame 2, this modulus of elasticity in comperssion is preferably equal to or more than 10GPa.The elasticity of compression
Modulus is according to " JIS K 7076 " canonical measure.
The prepreg with low modulus of elasticity in comperssion can have the carbon fiber acquisition of low tensile modulus of elasticity by combination.
The concrete example of the carbon fiber with low tensile modulus of elasticity is amorphous carbon fiber.There is the preimpregnation of low compression elastic modelling quantity
Material can also by the fiber weight per unit area of carbon fiber (FAW, Fiber Area Weight) is arranged to little and
Obtain.
It is suitable for concrete graphite fibre company of example Japan (the Nippon Graphite of the carbon fiber of each side enhancement Layer 18
Fiber Co., Ltd.) trade name " XN-05 ", " XN-10 " and " XN-15 " that manufactures.Particularly preferred carbon fiber
It is " XN-05 ".
In view of impact absorbing, operability and resilience, the tensile modulus of elasticity of the prepreg of each side enhancement Layer 18 is relatively
Goodly equal to or less than 100GPa, more it be preferably equal to or less than 75GPa, particularly preferably equal to or less than
35GPa.In view of the intensity of racket frame 2, this tensile modulus of elasticity is preferably equal to or more than 10GPa.Tensile elasticity
Modulus is according to " JIS K 7073 " canonical measure.
In view of impact absorbing, operability and resilience, the tensile modulus of elasticity of the carbon fiber of each side enhancement Layer 18 is relatively
Goodly equal to or less than 160GPa, more it be preferably equal to or less than 120GPa, particularly preferably equal to or less than
60GPa.In view of the intensity of racket frame 2, this tensile modulus of elasticity is preferably equal to or more than 20GPa.This carbon fiber
Tensile modulus of elasticity be the canonical measure according to " JIS L 1069 ".
The carbon fiber of each side enhancement Layer 18 can be resin type or PAN type.In view of impact absorbing, operability and
Resilience, resin type carbon fiber is preferably.The prepreg of each side enhancement Layer 18 can include in addition to carbon fiber
Fiber.Prepreg can include the thermosetting resin in addition to epoxy resin.
As it has been described above, the part that racket frame 2 is in addition to enhancement Layer 14,16 and 18 is also formed by prepreg.Consider
To the intensity of racket frame 2, the modulus of elasticity in comperssion of prepreg is preferably higher than the pressure of the prepreg of each side enhancement Layer 18
Contracting elastic modelling quantity.The modulus of elasticity in comperssion of the prepreg of the part in addition to enhancement Layer 14,16 and 18 be preferably equal to or
Person is more than 110GPa, particularly preferably equal to or more than 130GPa.
In FIG, reference marker Pmax represents the point that the width of racket frame 2 is maximum.Arrow L1 represents axis direction
Distance between the top side P1 and some Pmax of upside enhancement Layer 18.Arrow L2 represents side enhancement Layer in the axial direction
Distance between the yoke portion side P2 and some Pmax of 18.
In view of impact absorbing, operability and resilience, distance L1 is preferably equal to or more than 4cm, more preferably
Ground is equal to or more than 6cm, particularly preferably equal to or more than 8cm.Distance L1 is preferably equal to or less than 15cm.
In view of impact absorbing, operability and resilience, distance L2 is preferably equal to or more than 4cm, more preferably
Ground is equal to or more than 6cm, particularly preferably equal to or more than 8cm.Distance L2 is preferably equal to or less than 15cm.
It should be evident that each side enhancement Layer 18 is positioned at the outside at the center of thickness in Fig. 3 and 4.In other words, each
Side enhancement Layer 18 is located adjacent on the position of basal surface 24 of string of a musical instrument groove 20.Each side enhancement Layer 18 contributes to racket head 4
Deformation.
In the diagram, arrow T1 represents that the thickness of racket head 4, arrow T2 represent basal surface 24 to the side from string of a musical instrument groove 20
The thickness of enhancement Layer 18.In view of impact absorbing, operability and resilience, thickness T2 is preferable with the ratio of thickness T1
Ground, equal to or less than 50%, is more preferably equal to or less than 40%, particularly preferably equal to or less than 30%.Ratio
Can be zero.
Example
[example 1]
Produce and be shown in the racket frame in Fig. 1 to 4.It is used for the modulus of elasticity in comperssion of each prepreg of racket frame
As follows.
Side enhancement Layer: 32GPa
Crown-reinforcing: 129GPa
Yoke portion enhancement Layer: 129GPa
Other parts: 129GPa
The tensile modulus of elasticity of the carbon fiber of the prepreg of each side enhancement Layer is 54GPa.The fiber of the carbon fiber in prepreg
Weight per unit area is 100g/m2。
[example 2]
In addition to there is the prepreg of the modulus of elasticity in comperssion of 64GPa and be used for each side enhancement Layer, the racquet frame of example 2
Frame obtains in the way of as example 1.The tensile modulus of elasticity of the carbon fiber of prepreg is 110GPa.Carbon in prepreg
The fiber weight per unit area of fiber is 100g/m2。
[example 3]
In addition to there is the prepreg of the modulus of elasticity in comperssion of 85GPa and be used for each side enhancement Layer, the racquet frame of example 3
Frame obtains in the way of as example 1.The tensile modulus of elasticity of the carbon fiber of prepreg is 155GPa.Carbon in prepreg
The fiber weight per unit area of fiber is 100g/m2。
[comparative example 1]
In addition to there is the prepreg of the modulus of elasticity in comperssion of 129GPa and be used for each side enhancement Layer, the ball of comparative example 1
Racket frame obtains in the way of as example 1.The tensile modulus of elasticity of the carbon fiber of prepreg is 230GPa.In prepreg
The fiber weight per unit area of carbon fiber be 100g/m2。
[example 4]
Except the fiber weight per unit area of the carbon fiber in prepreg is 70g/m2, the racket frame of example 4 with comparative example
1 same mode obtains.The tensile modulus of elasticity of the carbon fiber of prepreg is 230GPa.
[assessment]
Ring, hold band, end cap and line are installed to each racket frame to produce tennis racket.Tennis racket is fixed so that tennis with
Each point in first to the 18th on the speed impacts striking surface of 30m/s, and measure the coefficient of resilience.Each point
Coordinate (x, y) as follows.
First point: (0,12)
Second point: (0,15)
Thirdly: (0,18)
4th point: (0,21)
5th point: (0,24)
6th point: (0,27)
7th point: (0,30)
8th point: (3,12)
9th point: (3,15)
10th point: (3,18)
Ten one point: (3,21)
Ten two point: (3,24)
Ten three point: (3,27)
Ten four point: (6,12)
Fifteenth point: (6,15)
Ten six point: (6,18)
Ten seven point: (6,21)
Ten eight point: (6,24)
Origin is at the top of striking surface, and x is that y is on axis direction from the distance (cm) of initial point on width
From the distance of initial point.Calculate meansigma methods e1 of the coefficient of resilience of first to the 7th, the coefficient of resilience of the 8th to the 13rd
Meansigma methods e3 of the coefficient of resilience of meansigma methods e2 and the 14th to the 18th.Result is shown in table 1 below.
Table 1 assessment result
As shown in table 1, in the racket frame of each example, in the direction of the width away from the coefficient of resilience of point of central point
Higher.In other words, the happy district of the racket frame of each example is wider.From the point of view of assessment result, the advantage of the present invention is
Significantly.
As described above just to explanation example, various amendment can be made according to the principle of the present invention.
Claims (6)
1. a racket frame, described racket frame includes the racket head formed by fiber-reinforced resin, it is characterised in that wherein,
Described racket head includes the enhancement Layer for string of a musical instrument groove；
Described enhancement Layer is formed by prepreg, and described prepreg includes fiber and matrix resin；And
The modulus of elasticity in comperssion of described prepreg equals to or less than 100GPa.
2. racket frame as claimed in claim 1, it is characterised in that wherein, the tensile modulus of elasticity etc. of described prepreg
In or less than 100GPa.
3. racket frame as claimed in claim 1 or 2, it is characterised in that wherein, the tensile modulus of elasticity of described fiber
Equal to or less than 160GPa.
4. racket frame as claimed in claim 1 or 2, it is characterised in that wherein, the material of described fiber is amorphous
Carbon.
5. a racket frame, described racket frame includes the racket head formed by fiber-reinforced resin, it is characterised in that its
In,
Described racket head includes the enhancement Layer for string of a musical instrument groove；
Described enhancement Layer is formed by prepreg, and described prepreg includes fiber and matrix resin；And
The tensile modulus of elasticity of described fiber equals to or less than 160GPa,
Near the basal surface of described string of a musical instrument groove, the carbon fiber of described enhancement Layer prolongs on the thickness direction of described racket frame
Stretch.
6. a racket frame, described racket frame includes the racket head formed by fiber-reinforced resin, it is characterised in that its
In,
Described racket head includes the enhancement Layer for string of a musical instrument groove；And
Described enhancement Layer includes amorphous carbon fiber and matrix resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-016360 | 2013-01-31 | ||
| JP2013016360A JP6053539B2 (en) | 2013-01-31 | 2013-01-31 | Racket frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103961849A CN103961849A (en) | 2014-08-06 |
| CN103961849B true CN103961849B (en) | 2016-08-17 |
Family
ID=49998137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410037696.5A Active CN103961849B (en) | 2013-01-31 | 2014-01-26 | Racket frame |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2762205B1 (en) |
| JP (1) | JP6053539B2 (en) |
| CN (1) | CN103961849B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI617429B (en) * | 2017-09-22 | 2018-03-11 | Topkey Corp | Shock-absorbing composite material structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512350A (en) * | 2017-01-11 | 2017-03-22 | 盐城工学院 | Tennis racket frame and tennis racket |
| JP7159551B2 (en) | 2017-12-15 | 2022-10-25 | 住友ゴム工業株式会社 | racket frame |
| JP6906091B1 (en) * | 2020-07-20 | 2021-07-21 | 株式会社ゴーセン | Grommet for racket and racket equipped with this |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290424A2 (en) * | 1987-05-05 | 1988-11-09 | Fischer Gesellschaft M.B.H. | Racket frame |
| CN2316982Y (en) * | 1998-03-02 | 1999-05-05 | 生力旺兴业股份有限公司 | Improved racket frame |
| JP3474792B2 (en) * | 1998-12-18 | 2003-12-08 | 美津濃株式会社 | Racket frame |
| EP2550997A2 (en) * | 2011-07-25 | 2013-01-30 | Dunlop Sports Co., Ltd. | Racket frame |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436305A (en) * | 1981-08-26 | 1984-03-13 | American Sports Equipment | Composite reinforced racket structure |
| AT401877B (en) * | 1990-02-21 | 1996-12-27 | Scheruebl Franz | VIBRATED DAMPER TRAINING |
| JPH09108385A (en) * | 1995-10-19 | 1997-04-28 | Yamaha Corp | Racket frame |
| JPH1118631A (en) * | 1997-06-30 | 1999-01-26 | Daiwa Seiko Inc | Member for sporting goods |
| JPH11262546A (en) * | 1998-03-17 | 1999-09-28 | Mizuno Corp | Racket frame |
| JP4041031B2 (en) * | 2003-07-04 | 2008-01-30 | Ｓｒｉスポーツ株式会社 | Racket frame |
| JP3970865B2 (en) * | 2003-11-27 | 2007-09-05 | Ｓｒｉスポーツ株式会社 | Racket frame |
| JP4869388B2 (en) | 2009-07-10 | 2012-02-08 | Ｓｒｉスポーツ株式会社 | Racket frame |
| CN102188801A (en) * | 2010-03-15 | 2011-09-21 | 刘勇 | Shock-absorbing elasticity-increasing tennis racket, squash racket or badminton racket |
-
2013
- 2013-01-31 JP JP2013016360A patent/JP6053539B2/en active Active
-
2014
- 2014-01-24 EP EP14152466.0A patent/EP2762205B1/en active Active
- 2014-01-26 CN CN201410037696.5A patent/CN103961849B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290424A2 (en) * | 1987-05-05 | 1988-11-09 | Fischer Gesellschaft M.B.H. | Racket frame |
| CN2316982Y (en) * | 1998-03-02 | 1999-05-05 | 生力旺兴业股份有限公司 | Improved racket frame |
| JP3474792B2 (en) * | 1998-12-18 | 2003-12-08 | 美津濃株式会社 | Racket frame |
| EP2550997A2 (en) * | 2011-07-25 | 2013-01-30 | Dunlop Sports Co., Ltd. | Racket frame |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI617429B (en) * | 2017-09-22 | 2018-03-11 | Topkey Corp | Shock-absorbing composite material structure |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2762205A1 (en) | 2014-08-06 |
| EP2762205B1 (en) | 2016-09-07 |
| CN103961849A (en) | 2014-08-06 |
| JP6053539B2 (en) | 2016-12-27 |
| JP2014147430A (en) | 2014-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103961849B (en) | Racket frame | |
| US11541282B2 (en) | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis | |
| US9339699B2 (en) | Racquet configured with fewer cross strings than main strings | |
| CN109925686B (en) | Racket frame | |
| TWI724251B (en) | Tennis racket frame | |
| US9504891B1 (en) | Baseball bat | |
| CN205886131U (en) | Battledore | |
| CN209188049U (en) | A kind of racket of high-tension | |
| EP2689814B1 (en) | Racquet configured with fewer cross strings than main strings | |
| CN103121254A (en) | Fabrication method of composite baseball bat | |
| CN203915972U (en) | A kind of offensive racket of improvement | |
| TWI533907B (en) | Bat | |
| US20140213394A1 (en) | Lacrosse handle | |
| JP5349183B2 (en) | Racket frame | |
| US20050085314A1 (en) | Golf club | |
| CN201558470U (en) | Improved tennis racket | |
| KR20120036705A (en) | Badminton racket with grooved shaft which is filled with rubber | |
| JPH10309332A (en) | Racket frame | |
| JP2008036077A (en) | Racket | |
| JP2005237757A (en) | Racket frame | |
| JP2011024618A (en) | Racket frame | |
| TWM319062U (en) | Improved structure for badminton racket frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |