EP2219743A1 - Racket comprising a joint - Google Patents
Racket comprising a jointInfo
- Publication number
- EP2219743A1 EP2219743A1 EP08854688A EP08854688A EP2219743A1 EP 2219743 A1 EP2219743 A1 EP 2219743A1 EP 08854688 A EP08854688 A EP 08854688A EP 08854688 A EP08854688 A EP 08854688A EP 2219743 A1 EP2219743 A1 EP 2219743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joint
- racket
- clock
- racket according
- bridge
- 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
- 241000219470 Mirabilis Species 0.000 claims description 3
- 240000005860 Portulaca grandiflora Species 0.000 claims description 2
- 235000009854 Cucurbita moschata Nutrition 0.000 abstract description 3
- 235000009852 Cucurbita pepo Nutrition 0.000 abstract description 3
- 235000020354 squash Nutrition 0.000 abstract description 3
- 240000001980 Cucurbita pepo Species 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 240000004244 Cucurbita moschata Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyoxymethylene Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 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
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
-
- 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
- A63B49/025—Means on frames for clamping string ends
-
- 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
-
- 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
-
- 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
- A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
-
- 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
- A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
Definitions
- the present invention relates to a racket for ball games, in particular a tennis badminton, racquetball or squash racket.
- Such ball game rackets typically include a frame forming a club head, and a handle portion. Furthermore, such may have a arranged between the head area and the handle area neck or heart area or a fork.
- the club head of the racket defines a clothing plane in which the clothing of the racket is placed.
- the frame is formed from a frame profile that is often made from a carbon fiber reinforced plastic material in a molding press.
- EP-B-0 676 222 discloses a racket having a handle and a frame having a head portion, force amplifying portions, and flexible portions alternately formed along the entire frame or along a portion of the frame spaced from the handle, each of which 20 power amplification sections and flexible sections are provided.
- WO-A-91/12857 relates to a racket with a frame, which is formed by a profile and the outside of a frame spaced apart arranged profile part is assigned, which is supported with the interposition of a vibration damping device on the frame and stores the strings of a string ,
- EP-BI 097 730 relates to a ball game racket, wherein a profile forming the frame at different frame positions according to the occurring there Main stresses has different cross-sectional shapes, which have adapted to the respective types of stress resistance moments, and wherein at least two hump-like stiffening element are provided on the frame at least substantially symmetrical to the longitudinal axis of the racket in the heart area.
- US 4,311,308 describes a tennis racket with an insert in the heart area to which at least some strings can be attached.
- This insert can be designed in the form of a joint with a hinge axis in the clothing plane and substantially parallel to the racket longitudinal axis.
- the insert should be able to experience an elastic deformation due to the impulse of an incoming ball, in a direction perpendicular to the clothing plane.
- US 5,133,552 discloses a tennis racket whose frame has curved recesses in the heart area.
- a yoke piece (or bridge) has curved ends which are substantially matched to the curvature of these recesses. Between the yoke ends and the recesses of the frame, an elastomeric damping disc is provided. This should help to reduce shocks and vibrations in the racket.
- the present invention has for its object to provide a further improved ball game rackets, in particular an improved tennis, badminton, racquetball and squash rackets available. Further or additional objects of the invention are to provide a racket which overcomes the disadvantages of the prior art, which has improved handleability or optimized playability, which enables excellent ball guidance and acceleration and is simple and inexpensive to produce.
- the present invention provides a racket for ball games with a head portion for receiving a fabric and at least one joint provided in the head area, the hinge axis is arranged substantially perpendicular to a clothing plane formed by the fabric.
- a racket for ball games is provided with a head area for receiving a covering and at least one joint provided in the head area, wherein the joint is suitable for allowing deformations of the frame in the covering plane.
- This can be realized in particular by means of a joint whose articulation axis is arranged substantially perpendicular to a clothing plane formed by the clothing.
- the head shape of the racket is largely arbitrary and may for example be oval, egg-shaped, teardrop-shaped, rectangular with rounded corners, etc.
- a dial of a watch is usually used, the 12 o'clock position being located at the extreme or free end of the club head. Accordingly, the 3 o'clock or 9 o'clock position is approximately in the middle of the total length of the club head.
- the one or more joints can be arranged, for example, in the head area between two o'clock and four o'clock, preferably at about three o'clock and / or between eight o'clock and ten o'clock, preferably at about nine o'clock.
- the joint "at about three o'clock” to understand that the pivot point or the axis of rotation of the joint is positioned at about three o'clock.
- other joint positions or combinations of joint positions are conceivable.
- a symmetrical arrangement to the longitudinal axis of the racket will be advantageous, but an asymmetrical arrangement, for example, only one hinge at about three o'clock, should not be excluded hereby.
- the racket comprises a heart area with two arms and a bridge, wherein the bridge has at least one joint.
- This bridge joint may be present instead of or in addition to the joints mentioned above.
- Such a bridge joint can for example be realized in that the bridge comprises two legs which are movably mounted on the arms and connected to each other via the joint.
- the bridge is convex relative to the grip portion, in particular substantially V- or U-shaped, with the opening of the V or U pointing in the direction of the head region.
- the bridge is concave relative to the handle portion, in particular substantially V- or U-shaped, wherein the tip of the V or U points in the head region.
- the joint may be formed, for example, as a hinge joint or ball joint.
- a ball joint is particularly advantageous at about twelve o'clock and / or at the bridge.
- the head area has joint forks and / or eyelets which are movably connected to one another by means of plug-in hinge pins.
- all known types of industrial seals are usable.
- materials come for z.
- aluminum, magnesium, titanium or high performance plastics such.
- the joint has at least one end stop in order to limit and / or slow down the deflection of the joint in order to be able to specifically control the deformation of the club head.
- the hinge permit pivot angles in the range of -15 to 15 degrees, preferably -10 to 10 degrees, more preferably -5 to 5 degrees.
- the joint may for this purpose have a spring device which counteracts the deflection of the joint.
- Fig. 1 is a plan view of a ball game racket according to a preferred embodiment of the invention
- Fig. Ia is a schematic side view of a first joint type in the racket according to Fig.l;
- FIG. 1b shows a schematic side view of a second joint type in the racket according to FIG.
- FIG. 2 is a schematic diagram of possible deformations of the head region of a racket according to FIG. 1;
- FIG. 3 is a plan view of a ball game racket according to another preferred embodiment of the invention.
- FIG. 4 shows a plan view of the heart area of a ball game racket according to a further preferred embodiment of the invention.
- FIG. 5 is a schematic diagram for explaining the operation of the joint according to FIG. 3.
- FIG. 6 is a schematic diagram for explaining the operation of the joint according to a variant of the embodiment in Fig. 3rd
- Fig. 1 shows a ball game rackets according to the invention, in particular tennis rackets in plan view.
- the ball game racket has a frame which is a substantially oval Club head or head area 1, a heart area 2 and a handle portion 3 forms.
- the frame is preferably formed from a frame or hollow profile.
- the club head defines a clothing plane of the racket.
- the frame in the region of the head portion 2 a plurality of substantially lying in the clothing plane through holes (not shown) for carrying stringed on.
- the heart area 2 of the racket is arranged essentially between the head area 1 and the handle section 3 and represents the connection area between them.
- the heart area 2 has, for example, an opening 4, as shown in FIG. However, this opening is not mandatory.
- the opening 4 is formed, it is generally formed by two side sections or arms 5 and 6 and a connecting portion or a bridge 7, which is arranged in the head portion 2 of the racket.
- the racket in the head area 2 further comprises two joints 8 and 9 at about three o'clock and nine o'clock, respectively.
- the different design of the joints 8 and 9 serves only to illustrate exemplary joints. In reality, it will be beneficial to attach two identical joints at both positions.
- the joint 8 can be formed, for example, by having the head area joint forks and / or - ⁇ sen, which are movably connected to each other by means of plug-in hinge pin, as indicated on the left side of Fig. 1 and shown in Fig. Ia closer.
- a double-joint arrangement 9, as shown schematically in FIG. 1b can also be used for increased mobility.
- Fig. 2 is shown schematically how the joints 8 allow deformation of the head portion 1 of the racket shown in Fig. 1.
- the upper half of the head region 1 ie the range between about nine o'clock and about three o'clock, can shift or distort relative to the rest of the frame, as indicated by the arrow and the frame contour shown in dashed lines.
- the joint axes of the joints 8 are formed perpendicular to the clothing plane, however, a deformation substantially only within the clothing or racket level is possible.
- the joint 8 has at least one end stop in order to limit and / or slow down the deflection of the joint so as to be able to specifically control the deformation of the club head and in particular also to prevent the club or whose clothing collapses. Accordingly, it is desirable that the hinge permit deflections in the range of -15 to 15 degrees, preferably -10 to 10 degrees, more preferably -5 to 5 degrees, over the fully-lined position in FIG. Further, the joint 8 may alternatively or additionally comprise a spring device for this purpose, which counteracts the deflection of the joint.
- the spring constant of this spring device is in the range between 5 and 100 N / cm, preferably between 30 and 70 N / cm.
- non-linear springs or spring devices could advantageously be used in this context.
- the spring device comprises two different work areas, so that, for example deflections of the joint 8 inward, ie in the direction of the covering, are exposed to a greater spring force than deflections to the outside. Just as the stops to limit the deflection can allow different deflection angle to the inside or outside.
- a modified attachment of the joints 8 at the head area 1 is possible.
- a larger portion of the head portion 1 will participate in the deformation when the hinges 8 are closer to the handle, that is, for example, at about four o'clock and about eight o'clock.
- positioning the joints at about two o'clock and about ten o'clock will cause less than half of the head area to be distorted.
- Fig. 3 shows a further ball game racket according to the invention with a hinge 8 at about twelve o'clock.
- This embodiment could just as well be realized with the hinge 9.
- a racket according to the invention can also be provided by a combination of the joints and / or joint positions illustrated in FIGS. 1 and 3, that is, having joints at about three o'clock, nine o'clock and twelve o'clock.
- the bridge comprises two legs 10 and 11 which are movable mounted on the arms 5 and 6 and connected to each other via a hinge 8.
- the joint shown is merely exemplary and technically feasible in other ways.
- the bridge is convex relative to the handle portion, namely U-shaped, wherein the opening of the U points in the head region.
- a racket according to the embodiment shown in Figs. 4 and 5 causes a cushioning of the ball impulse on the longitudinal strings with simultaneous pulse amplification on the transverse strings.
- the bridge as seen in Fig. 6, relative to the handle portion concave, namely U-shaped, formed, wherein the opening of the U in the direction handle portion.
- the impact of a ball in this variant has a substantially reverse effect.
- the deformation of the bridge 7 causes a contraction of the head area 1 and thus a relaxation of the transverse strings, as illustrated by the corresponding arrows.
- the present invention has an advantageous effect on the playing behavior of a racket according to the invention, in that the deformation behavior can be adjusted in a targeted and controlled manner.
- the embodiment of the racket illustrated in Figure 1 is "softer" than a conventional racket in a direction perpendicular to the racket longitudinal axis, whereas the elasticity of the rack along the racket longitudinal axis remains substantially unaffected. This can be for the vibratory spectrum of the racket and thus for 4 also makes it possible to influence the oscillation spectrum in a controlled manner As already explained in connection with FIGS.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Golf Clubs (AREA)
- Toys (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007056831.4A DE102007056831B4 (en) | 2007-11-26 | 2007-11-26 | Racket with joint |
PCT/EP2008/009470 WO2009068178A1 (en) | 2007-11-26 | 2008-11-10 | Racket comprising a joint |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2219743A1 true EP2219743A1 (en) | 2010-08-25 |
EP2219743B1 EP2219743B1 (en) | 2016-01-27 |
Family
ID=40456718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08854688.2A Active EP2219743B1 (en) | 2007-11-26 | 2008-11-10 | Racket comprising a joint |
Country Status (5)
Country | Link |
---|---|
US (1) | US8282513B2 (en) |
EP (1) | EP2219743B1 (en) |
CN (1) | CN101896234B (en) |
DE (1) | DE102007056831B4 (en) |
WO (1) | WO2009068178A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9504882B2 (en) * | 2015-04-27 | 2016-11-29 | Gregory Mark Adamczak | Interactive tennis racket with split head, flexible spherical joints and strings tension mechanism |
EP3241591A1 (en) | 2016-05-06 | 2017-11-08 | Head Technology GmbH | Yoke for a ball game racket |
US11161017B1 (en) * | 2020-04-09 | 2021-11-02 | Cyrus O. Varan | Racket with discontinuous frame |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1937787A (en) | 1928-06-13 | 1933-12-05 | Roy H Robinson | Tennis or squash racket |
JPS5922533B2 (en) * | 1976-11-16 | 1984-05-28 | ヤマハ株式会社 | tennis racket |
US4209170A (en) | 1978-03-13 | 1980-06-24 | Garver John P | Tennis racket |
US4247103A (en) * | 1979-04-04 | 1981-01-27 | Garver John P | Tennis racket |
US4311308A (en) | 1979-05-31 | 1982-01-19 | Franz Volkl Ohg | Tennis racket |
DE3024234A1 (en) * | 1980-06-27 | 1982-01-21 | Reinhold 4300 Essen Sommer | FRAME FOR A TENNIS RACKET |
ZA867667B (en) * | 1985-10-11 | 1987-05-27 | Fin Sports Ltd | Racquet shock absorbing device |
DE8607726U1 (en) | 1986-03-20 | 1986-09-04 | Julius & August Erbslöh GmbH & Co, 5620 Velbert | Tennis racket |
JPS63168181A (en) * | 1986-12-29 | 1988-07-12 | 美津濃株式会社 | Racket frame |
US4988100A (en) | 1989-04-03 | 1991-01-29 | Shu Donald G C | Tennis racket with separable head and handle assembly |
DE4014999C2 (en) | 1990-05-10 | 1993-12-02 | Eckard Dipl Ing Schlenker | Rackets, in particular tennis rackets |
US5076583A (en) * | 1990-08-21 | 1991-12-31 | Sportstech Industries (U.S. Tech) Inc. | Racket frame with circular cross section and variable thickness |
US5133552A (en) | 1991-11-25 | 1992-07-28 | Lisco, Inc. | Floating yoke piece for a racket |
US5172911A (en) * | 1991-12-31 | 1992-12-22 | Chang Chen Chung | Metal racket frame |
DE4311175A1 (en) | 1992-04-03 | 1993-10-07 | Eckard Dipl Ing Schlenker | Racquet esp. for tennis, with enclosed inner frame with strings - has surrounding outer frame joined to inner frame by four links in form of ball and socket joints or pivot links |
CA2079347A1 (en) * | 1992-09-24 | 1994-03-25 | Charles C. Dicerbo | Sports racket |
US5282617A (en) | 1992-11-05 | 1994-02-01 | Arthur Hong | Game racket capable of prolonging thereon dwelling time of ball |
US5324030A (en) * | 1993-04-29 | 1994-06-28 | Tsou Ching Fang | Shock absorbing throatpiece of game racket |
US5599018A (en) * | 1994-03-31 | 1997-02-04 | Radel; Harry | Strung racket |
EP0676222B1 (en) | 1994-04-11 | 2000-06-28 | Wavex Corporation | Racket with rugged frame |
CA2174696A1 (en) | 1996-04-22 | 1997-10-23 | Charles Dicerbo | Sports racket |
DE19953626B4 (en) | 1999-11-08 | 2004-02-05 | Head Sport Ag | Rackets for ball games |
FR2845610B1 (en) | 2002-10-09 | 2006-12-01 | Major Sports Sa | FIBER MOLDED TENNIS RACKET |
DE202004002090U1 (en) * | 2004-01-23 | 2005-06-09 | Head Technology Gmbh | Racket for ball games, e.g. tennis, squash, badminton or racket ball comprises a racket head and a frame with a connected grip section |
DE102004025346B4 (en) * | 2004-05-19 | 2007-02-08 | Völkl Tennis GmbH | Ball game rackets, in particular tennis rackets |
DE102006004849B4 (en) | 2006-02-02 | 2008-01-03 | Head Technology Gmbh | Ball game racket with vibration device |
EP2062621B1 (en) * | 2007-11-26 | 2012-04-04 | Head Technology GmbH | Racquet with moveable mounted bridge |
-
2007
- 2007-11-26 DE DE102007056831.4A patent/DE102007056831B4/en not_active Expired - Fee Related
-
2008
- 2008-11-10 US US12/744,658 patent/US8282513B2/en not_active Expired - Fee Related
- 2008-11-10 CN CN2008801179242A patent/CN101896234B/en active Active
- 2008-11-10 WO PCT/EP2008/009470 patent/WO2009068178A1/en active Application Filing
- 2008-11-10 EP EP08854688.2A patent/EP2219743B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009068178A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101896234B (en) | 2013-04-10 |
US8282513B2 (en) | 2012-10-09 |
US20110003654A1 (en) | 2011-01-06 |
DE102007056831B4 (en) | 2015-10-22 |
WO2009068178A1 (en) | 2009-06-04 |
CN101896234A (en) | 2010-11-24 |
EP2219743B1 (en) | 2016-01-27 |
DE102007056831A1 (en) | 2009-05-28 |
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