CN1041802C - Games racket frame - Google Patents

Games racket frame Download PDF

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Publication number
CN1041802C
CN1041802C CN91102767A CN91102767A CN1041802C CN 1041802 C CN1041802 C CN 1041802C CN 91102767 A CN91102767 A CN 91102767A CN 91102767 A CN91102767 A CN 91102767A CN 1041802 C CN1041802 C CN 1041802C
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CN
China
Prior art keywords
framework
damping material
parts
jockey
cover
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.)
Expired - Lifetime
Application number
CN91102767A
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Chinese (zh)
Other versions
CN1056060A (en
Inventor
罗伯特·C·海恩斯
迈克尔·E·柯蒂斯
安德鲁·J·马斯登
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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of CN1056060A publication Critical patent/CN1056060A/en
Application granted granted Critical
Publication of CN1041802C publication Critical patent/CN1041802C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A63B49/03—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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/035—Frames with easily dismountable parts, e.g. heads, shafts or grips
    • 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
    • A63B60/0081—Substantially flexible shafts; Hinged shafts
    • 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
    • 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
    • A63B60/06—Handles
    • 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
    • A63B60/06—Handles
    • A63B60/08—Handles characterised by the material
    • 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
    • A63B60/06—Handles
    • A63B60/10—Handles with means for indicating correct holding positions

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Pulmonology (AREA)
  • Vibration Prevention Devices (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Toys (AREA)
  • Fishing Rods (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Vibration Dampers (AREA)
  • Laminated Bodies (AREA)

Abstract

A games racket frame is discontinuous being in two parts (11, 12). The parts (11, 12) are joined by a vibration-damping material (21) secured in position by plugs (23, 24). A reinforcing member (14) is also provided and this may comprise a collar (20) surrounding the discontinuity (13), together with a rod (25) contained within the vibration-damping material (21). Rackets according to the invention exhibit reduced transmission of shock and vibration to the player, thus minimizing the risk of ''tennis elbow'' and similar injuries.

Description

Games racket frame
The present invention relates to a kind of games racket frame.This framework has comprised a kind of damping element, and it can make tennis pat portion and handle portion vibration isolation.
The purpose of this invention is to provide a kind of games racket frame.In this games racket frame of the present invention, by the racket part of hand-held person's grasping, also be that handle portion can be separated by the part that ball or other projectile clashed into effectively with on the tennis racket mutually, and mechanically vibration isolation.
Like this, the present invention just provides a kind of tennis racket, and it has bat portion, bar portion and the handle portion that is used to wear string.This non-coherent framework is made up of two parts, and a part comprises bat portion, and another part then comprises handle portion, and wherein said two parts are joined by a jockey.Described jockey has comprised a kind of connector of damping material formation and the reinforcement of the above-mentioned damping material of one or more embeddings, and described jockey is configured to such an extent that can overlap above-mentioned two parts, described damping material is adhered to above-mentioned two parts, and on the first above-mentioned reinforcement, thereby above-mentioned two parts are bonded together inseparably, but then can make the mechanically vibration isolation of these two parts by this damping material.
What this damping material was suitable is thermosetting or thermoplastic, but injected plastics material especially, as polyurethane resin.Suitable material can be that the elastomeric material that synthesizes is to produce the characteristic of damping material.
But preferable polyurethane resin comprises a kind of elastomeric material of injection moulding thermosetting, especially become liquid and mix with two parts form, thus the curable polyurethane that can give injection moulding rapidly and solidify on the spot subsequently.This material can buy from compounding ingredients Co., Ltd (Compounding Ingredients Liwied) by CILCAST 101 (solidifying through adding CILCURE B).Word CILCAST and CILCURE are registration mark.This material has some characteristics of the damping material of wanting required for the present invention, measurement according to British Standard (BS) 2782 third parts, the hardness of this material is greater than 60 ° of Shore hardness, and measures according to British Standard (BS) 903A8 part method B, and its strain is lower than 20%.Better this damping material, according to its Shore hardness of canonical measure of British Standard (BS) 2782 third parts in 70 ° to 95 ° scopes, and according to the measurement of British Standard (BS) 903A8 part method B, this damping material preferably strain in the 5-15% scope.
Best this damping material also promptly need not other bonding agent from the two parts that are bonded to reinforcement and games racket frame.The curable polyurethane of above-mentioned two parts promptly has this desired characteristic.
In the present invention first preferential embodiment, reinforcement comprises a cover or ring, and it places the outside of framework, on the position corresponding to damping material.
Best, those parts have less external diameter on the framework that be connected by jockey, above-mentioned like this cover or ring can with the concordant setting of framework remainder of jockey either side.
Above-mentioned cover or ring can have one or more parts that are fixed to embed damping material.
In the of the present invention second preferential embodiment, reinforcement comprises one or more shafts, and the discontinuous part that this shaft strides across between framework two parts is extended, and places among the damping material.Described each shaft can have one or more parts that are fixed to embed damping material.Each this shaft and described cover or ring global formation are comparatively desirable, and for example shaft can extend along cover or ring y direction.
In the of the present invention the 3rd preferential embodiment, reinforcement has comprised a plate object that will place damping material.Those parts with the framework that jockey connected can be provided with groove to place described plate object.Also additional reinforcement can be set, for example warp-wise passes one or more pin shape things of each frame part and described plate object.
Best, this games racket frame only is two parts, also promptly only uses a jockey.Jockey more than one also can be arranged, and in this case, framework is three or more parts just.
The present invention will be only with example, is also illustrated in conjunction with the accompanying drawings by following explanation.In the drawings:
Fig. 1 is the schematic side view according to a kind of games racket frame of the present invention.
Figure 1A is the amplification view that Fig. 1 draws the circle part,
Fig. 2 is the cutaway view of the games racket frame of the first preferential embodiment according to the present invention.
Fig. 3 is the games racket frame cutaway view of the second preferential embodiment according to the present invention.
Fig. 3 A is the simple axonometric drawing of the jockey of Fig. 3.
Fig. 4 is that the jockey first of Fig. 3 is replaced the cutaway view of structure.
Fig. 5 is the schematic side view of a kind of games racket frame according to the present invention, and it demonstrates the suitable relative dimensions of two parts that will connect with jockey.
Fig. 6 is that the jockey second of Fig. 3 is replaced the cutaway view of structure.
Fig. 7 is the profile along VII among Fig. 6-VII line.
Fig. 8 is the cutaway view of the games racket frame of the 3rd preferential embodiment according to the present invention.
Fig. 9 is the profile along IX among Fig. 8-IX line.
Figure 10 is Fig. 8 and a kind of cutaway view of replacing the games racket frame of structure embodiment illustrated in fig. 9.
Figure 11 is the profile along XI among Figure 10-XI line.
Referring to Fig. 1 and Figure 1A, a kind of games racket frame comprises the bat portion 10 that is used to wear string, rod blank 11 and handle 12.This bar portion is cut off at 13 places, and this bar and handle couple together with a jockey 14 subsequently.This jockey 14 is included in the cover or the ring 20 of cut place 13 encircles rod portions, a kind of elastomeric material 21 has been filled at position between bar 11 and handle 12 combination ends, and this material is by overlapping hand-hole 22 on 20 and inject and it being remained on should have on the position by stopping up 23 and 24.Contain bracing piece 25 at this elastomeric material 21.
In Fig. 2, bar 11 and handle 12 partly are less external diameter at 11A and 12A respectively, so that jockey finishes when connecting, cover 20 flushes setting with the remainder of bar and handle.
In Fig. 3 and Fig. 3 A, reinforcement comprises a common cylindrical sleeve 31, and sleeve has an integral stem 32 that extends along its longitudinal axis.
Referring to Fig. 4, reinforcement 40 has been except having comprised for increasing and being fixed to the part (shown in 41 and 42) of elastomeric material adhesive force, still comprises a common cylindrical sleeve that has an integral stem that extends along this sleeve longitudinal axis.
Fig. 5 is the diagrammatic depiction that comprises the games racket frame of bat portion/bar portion 50 and handle portion/bar portion 51.The preferable separation point position of 50 and 51 parts illustrates by 52, and the various sizes of 50 and 51 parts are illustrated by a, b, c, d respectively.In this example shown in Figure 5, its various sizes are as follows:
A=510 millimeter (mm)
B=50 millimeter (mm)
C=125 millimeter (mm)
D=150 millimeter (mm)
In fact, size " d " distance of butt end to 50 and 51 two parts separations of handle (promptly from) can be within 40mm to 330mm scope, and 100mm to 200mm is preferable, and ideal value is about 150mm.
In the tennis racket of making, the position of the best sd so of jockey, it is covered (part of promptly twining leather) by lever, also is that this jockey places in the handle portion scope.This its size of preferable structure " d " is normally satisfied in 100mm to 200mm scope the time.
Referring now to Fig. 6 and Fig. 7,, frame part 60 and 61 at discontinuous point 62 places separately.With the jockey that comprises cover 63 and elastic material component 64 these two parts are coupled together then, gambling plug 65 and 66 can make element 64 remain on the appropriate location, and this jockey comprises the bar 67 that places in the elastomeric material 64.
In Fig. 8 and Fig. 9, framework 80 and 81 parts have slot part 82 and 83 respectively, to place gusset plate 84.This frame part and plate all have boring, to place the pin of being made by damping material 85 and 86.Sleeve 87 surrounds jockey, and making of this jockey then is to realize by 89 filling elastic materials 88 of the hand-hole on sleeve.The direction of this jockey should be and makes the string plane of stiffener 84 perpendicular to the tennis racket of making.
Now referring to Figure 10 and Figure 11.Frame part 101 separates at discontinuous point 103 places with 102.101 parts and 102 parts partly are than minor diameter at 101A and 102A respectively, and described 101A and 102A partly are the dumbbell shaped section usually for sealing.Frame part 101 is connected with 102 usefulness jockeys, and this jockey comprises cover 104, bar 105 and 106 and elastic material component 107, and element 107 remains on the appropriate location by stopping up 108 and 109, and injects by hand-hole 110.
(not shown) in another alternative embodiment, two parts of the games racket frame that connect can have mating flanges, and in the tubulose connected mode, its damping material is as the liner between two flanges.
The present invention will be described further with following Example:
Mix the synthetic material of epoxy resin with carbon fibre and glass fibre and make two identical tennis rackets, say it is well-known for the those of skill in the art in present technique field.
One of this two framework is cut off at 135 millimeters places of distance rod end, and a long sleeve of 50 millimeters is positioned on the appropriate location.With carbon fibre strengthen 50 millimeters of the length that nylon makes, three bracing pieces that separate of 6 millimeters of diameters are located as shown in Figure 6 and Figure 7, liquid polyurethane resin are injected in the spaces between two gambling plugs.(CILCAST?101／CILCURE?B)
Like this, by being stained with the leather lever and putting on string, just can be made into two with heavy and balanced games racket frame with usual way.
By fixing an accelerometer, and will speed up table and be connected on the oscillograph, do the vibration attenuation test of these two tennis rackets in each tennis racket grip.Wear the frame vibration that the string zone causes by the tennis bump, measure the vibration attenuation rate of these two tennis rackets.Attenuation factor (seeing below) to each tennis racket is calculated, and can obtain following result:
Attenuation factor
1. the tennis racket 123 that separates of handle
2. the computing formula without improved standard network racket 23 attenuation factors is: log e ( A 1 A 2 ) × 1000
A in the formula and A are two continuous shaking crest amplitudes, and this amplitude is taken from the oscillograph reading of damped vibration.
The attenuation factor of handle separate mesh racket is than much higher without the attenuation factor of improved tennis racket as can be seen, this shows that acting on user's vibration effect on one's body will obviously reduce, because " tennis elbow " that transmission bump and vibration plane cause and similar damage will correspondingly reduce.
Can be according to games racket frame of the present invention with wooden, metal or synthetic material are made.
At last, the invention still further relates to a kind of tennis racket that comprises framework as indicated above.

Claims (25)

1. one kind has the bat portion that is used to wear string, the games racket frame of bar portion and handle portion, this framework is non-coherent, it comprises two parts, a part comprises bat portion, another part comprises handle portion or its part, two parts described here connect with a jockey, described jockey comprises the connector of damping material formation and the reinforcement of one or more embedding damping materials, and described jockey is configured to such an extent that can overlap described two parts, it is characterized in that its damping material is adhered on described two parts and above-mentioned each reinforcement, thereby described two parts are linked together inseparably, but can make the mechanically vibration isolation of these two parts by described damping material.
2. according to the framework of claim 1, it is characterized in that damping material is a kind of thermosetting material.
3. according to the framework of claim 1, it is characterized in that damping material is a kind of thermoplastic material.
4. according to each framework of claim 1 to 3, but it is characterized in that damping material is a kind of material of injection moulding.
5. according to each framework of claim 1 to 4, it is characterized in that damping material comprises a kind of elasticity thing.
6. according to each framework of claim 1 to 5, it is characterized in that damping material comprises a kind of polyurethane.
7. according to each framework of claim 1 to 6, it is characterized in that damping material has greater than 60 ° of Shore hardness according to the measurement of British Standard (BS) 2782 third parts, and according to the measurement of British Standard (BS) 903A8 part method B, its strain is lower than 20%.
8. according to the framework of claim 7, it is characterized in that damping material has 70 ° of Shore hardness to 95 ° of scopes according to the measurement of British Standard (BS) 2782 third parts.
9. according to the framework of claim 7 or 8, it is characterized in that the measurement of damping material, have the strain of 5-15% scope according to British Standard (BS) 903A8 part method B.
10. according to claim 1,2,4,5,6,8 and 9 framework, it is characterized in that but damping material comprises a kind of injection moulding, the elastic polyurethane thing of thermosetting, 2782 third part measurements have 70 ° to 95 ° Shore hardness and this damping material is according to British Standard (BS), and measurement has the strain of 5-15% according to British Standard (BS) 903A8 part method B.
11., it is characterized in that reinforcement comprises to be configured in the framework outside corresponding to locational cover of damping material or ring according to each framework of claim 1 to 10.
12., it is characterized in that and to have less external diameter by the frame part that jockey connects, thereby make above-mentioned cover or ring all flush setting with the framework remainder at the either side of jockey according to the framework of claim 11.
13., it is characterized in that overlapping or ring has the part that is fixed to of one or more embedding damping materials according to the framework of claim 11 or 12.
14., it is characterized in that reinforcement comprises one or more shafts that place damping material according to each framework of claim 1 to 13.
15., it is characterized in that each shaft has the portion that is fixed to of one or more embedding damping materials according to the framework of claim 14.
16., it is characterized in that each shaft and cover or ring are global formations according to each framework of claim 11 to 15.
17., it is characterized in that cover or ring generally are cylindric and have a shaft to extend along this cover or ring y direction according to the framework of claim 16.
18., it is characterized in that reinforcement comprises that one places the plate object of damping material according to each framework of claim 1 to 13.
19., it is characterized in that the frame section that is connected by jockey sets up groove separately to place above-mentioned plate object according to the framework of claim 18.
20., it is characterized in that comprising that the length of handle portion or appropriate section is in 40 millimeters to 330 millimeters scopes according to each framework of claim 1 to 19.
21., it is characterized in that comprising that the length of handle portion or appropriate section is in 100 millimeters to 200 millimeters scopes according to each framework of claim 1 to 19.
22., it is characterized in that the length that comprises handle portion or appropriate section is about 150 millimeters according to each framework of claim 1 to 19.
23., it is characterized in that this framework comprises the two parts that link to each other with a jockey according to each framework of claim 1 to 22.
24. tennis racket that has according to each framework in the aforementioned claim.
25., it is characterized in that jockey is in the handle portion scope, and cover with lever according to the tennis racket of claim 24.
CN91102767A 1990-05-02 1991-04-30 Games racket frame Expired - Lifetime CN1041802C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9009831.0 1990-05-02
GB909009831A GB9009831D0 (en) 1990-05-02 1990-05-02 Games racket frame

Publications (2)

Publication Number Publication Date
CN1056060A CN1056060A (en) 1991-11-13
CN1041802C true CN1041802C (en) 1999-01-27

Family

ID=10675324

Family Applications (1)

Application Number Title Priority Date Filing Date
CN91102767A Expired - Lifetime CN1041802C (en) 1990-05-02 1991-04-30 Games racket frame

Country Status (10)

Country Link
EP (1) EP0455349B1 (en)
JP (1) JP3021754B2 (en)
CN (1) CN1041802C (en)
AT (1) ATE107522T1 (en)
AU (1) AU645550B2 (en)
DE (1) DE69102582T2 (en)
ES (1) ES2055533T3 (en)
GB (2) GB9009831D0 (en)
MY (1) MY106502A (en)
ZA (1) ZA913268B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2057180C (en) * 1991-12-11 1998-06-30 Chin-San You Shock-absorbing racket frame made from fiber reinforced plastic material
EP0550121B1 (en) * 1992-01-08 1995-12-20 Chin-San You Racket frame
US5263712A (en) * 1992-09-18 1993-11-23 Lo Pi Tuan Game racket having fiber reinforced shaft
CA2174696A1 (en) * 1996-04-22 1997-10-23 Charles Dicerbo Sports racket
US5728008A (en) * 1997-02-10 1998-03-17 Media Group Ball striking device with means of imparting enhanced forward momentum to the ball
GB2436296A (en) * 2006-03-24 2007-09-26 Dunlop Slazenger Group Ltd Connecting means for connecting parts of a ball or like hitting appliance
JP6147053B2 (en) * 2013-03-28 2017-06-14 ダンロップスポーツ株式会社 Racket frame
ES2585041B1 (en) * 2015-04-01 2017-07-17 Foam System Plus, S.L. Manufacturing procedure of a frame for a paddle shovel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3062290D1 (en) * 1979-08-24 1983-04-14 Dunlop Ltd Games racket frame
US4367871A (en) * 1980-07-25 1983-01-11 Schiefer William E Articulable training device for racquet sports and the like
US4609198A (en) * 1983-11-08 1986-09-02 Tarr Robert G Racket handle assembly having vibration dampening characteristics
US4600194A (en) * 1983-12-22 1986-07-15 Donnelly Norbert B Anti-vibration device for sports rackets
GB8422666D0 (en) * 1984-09-07 1984-10-10 Dunlop Ltd Games rackets
WO1986004251A1 (en) * 1985-01-24 1986-07-31 Patrick Jeanrot Ball-game racket with foldable and separable frame or body
ZA867666B (en) * 1985-10-11 1987-05-27 Fin Sports Ltd Racquet vibration absorbing device
FR2608444B1 (en) * 1986-12-22 1989-03-31 Rossignol Sa TENNIS RACKET
GB8828143D0 (en) * 1988-12-02 1989-01-05 Dunlop Ltd Vibration-damping assembly for games rackets

Also Published As

Publication number Publication date
EP0455349B1 (en) 1994-06-22
GB2243790B (en) 1993-11-24
ZA913268B (en) 1992-12-30
JP3021754B2 (en) 2000-03-15
GB2243790A (en) 1991-11-13
AU7436391A (en) 1991-11-07
GB9106906D0 (en) 1991-05-22
JPH04227284A (en) 1992-08-17
MY106502A (en) 1995-06-30
EP0455349A1 (en) 1991-11-06
DE69102582T2 (en) 1994-10-20
GB9009831D0 (en) 1990-06-27
DE69102582D1 (en) 1994-07-28
CN1056060A (en) 1991-11-13
AU645550B2 (en) 1994-01-20
ATE107522T1 (en) 1994-07-15
ES2055533T3 (en) 1994-08-16

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GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
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Expiration termination date: 20110430

Granted publication date: 19990127