CN1145507C - Racket for tennis - Google Patents
Racket for tennis Download PDFInfo
- Publication number
- CN1145507C CN1145507C CNB991202457A CN99120245A CN1145507C CN 1145507 C CN1145507 C CN 1145507C CN B991202457 A CNB991202457 A CN B991202457A CN 99120245 A CN99120245 A CN 99120245A CN 1145507 C CN1145507 C CN 1145507C
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- China
- Prior art keywords
- bend
- thickness
- mentioned
- long handle
- frame portion
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- 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 - Fee Related
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Abstract
A tennis racket comprises a frame part 2, a shaft part 3, and a grip part 4, and first flexible parts 5a, 5b thinner than other parts in a direction perpendicular to a string stretching face are provided in positions closer to the frame part 2 than to the longitudinal center of the shaft part 3. Second flexible parts 6a, 6b thinner than the other parts in a direction perpendicular to the string stretching face are provided in positions closer to the shaft part 3 than to the longitudinal center of the frame part 2. The two flexible parts are formed of constricted parts.
Description
The racket that uses when the present invention relates to tennis tournament.In more detail, relate to have the tennis racket of 2 bends, particularly relate to owing to the performance bending effect, and the tennis racket of the bounce-back of raising ball, rotatory, control performance.
As tennis racket, people extensively adopt the fiber-reinforced resin goods.In general, because these tennis racket rigidity height are difficult to bending, can not give ball very high speed.And rotatory, control performance are also good inadequately.
To this, open flat 1-80162 communique, real opening flat 1-112868 number etc. in the communique real, proposed near the Thickness Design in frame portion center is got maximum, minimum thickness portion is located near the scheme the central part of long handle portion.
But even these tennis rackets do not satisfy the requirement of nearest high speed tennis tournament yet, people urgently wish that having a rebound property is good but also can make ball that rotatory and controlled tennis racket are arranged.
Purpose of the present invention is exactly in order to solve the existing the problems referred to above of conventional art, and provide a kind of can adapt to tennis tournament high-speed, have good bounce-back, the tennis racket of the high-speed ball of sounding the night watches.
In order to achieve the above object, tennis racket of the present invention is the tennis racket with frame portion, long handle portion and the portion that holds bat, it is characterized in that, it has the 1st bend and the 2nd bend, wherein the 1st crooked position is on the position than the more close frame of the central part portion of the length direction of above-mentioned long handle portion, perpendicular to little than other parts of the thickness of the tensioning face direction of the string of a musical instrument; The 2nd bend, it is positioned on the position than the more close long handle of the central part portion of the length direction of above-mentioned frame portion, perpendicular to little than other parts of the thickness of the tensioning face direction of the string of a musical instrument.The thickness of thin part of above-mentioned the 1st bend is in the long handle subordinate holds the scope of 55-95% of thickness; The thickness of thin part of above-mentioned the 2nd bend is in the long handle subordinate holds the scope of 52-98% of thickness; The thickness of above-mentioned the 1st bend is less than the thickness of the 2nd bend; The length of above-mentioned the 1st bend and the 2nd bend is respectively 30-70mm; The shape of above-mentioned frame portion is: the thickness maximum of front end, and hold thickness to reduce gradually downwards from front end.
In addition, on above-mentioned tennis racket, the shape of frame portion preferably front end is the thickest, holds thickness to reduce gradually downwards from front end.According to the structure of this tennis racket, because the front end of frame portion is set the most thickly, so the weight of frame portion front end is relatively than its bottom heavy (becoming the state of what is called " head is heavy ").Therefore, the double action of the effect that bending effect and head are heavy is compared with the tennis racket that only is provided with bend, and speed of swing is faster.As a result, can satisfy the requirement that improves speed in the nearest tennis tournament, the high-speed tennis of can sounding the night watches.In addition, when speed of swing was fast, bounce also improved rapidly, can be equipped with the ball rapidly of angle.
In addition, on above-mentioned racket, from string of a musical instrument tensioning face, the 1st bend and the 2nd bend are preferably on the left-right symmetry position of frame portion.
Racket of the present invention, crooked easily, ball can remain on the string of a musical instrument to a certain extent when playing ball, and can guarantee that racket contacts reasonable time with ball.Like this, just can give ball speed, easily make the ball rotation, and the control performance of ball might as well.
Fig. 1 is the axonometric drawing of the tennis racket of expression a kind of example of the present invention.
Fig. 2 is the side view of the tennis racket of expression a kind of example of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Tennis racket frame of the present invention is for example made with fiber-reinforced resin.This reinforcing fibre can be used carbon fibre, boron fibre, alumina fibre, finest wire, Ti-Si-C-O fiber, aramine fiber, how fragrant chemical fibre dimension, superhigh molecular weight polyethylene fibers etc.Particularly tensile elasticity rate is greater than 15t/mm
2, 20-40t/mm especially
2Material for well.From combined factors such as intensity, spring rate and cost ground, preferably use to be called the high strength of HM graphite, the carbon fibre of high-elastic sexual type.
Synthetic resin, available heat hardening epoxy resin, thermoplasticity polyamide etc.
Tennis racket frame of the present invention can be made with commonsense method, promptly the polylith preformed board is laminated into axle, and it is placed in inner chamber mould, that make desired shaped as frame shape, carries out heat treated again.
Hold 95% of thickness when the thickness of the 1st bend surpasses the long handle subordinate, or the thickness of the 2nd bend surpasses the long handle subordinate and hold 98% o'clock of thickness, bending effect is just not so good.
In addition, when the thickness of the 1st bend is held 55% of thickness less than the long handle subordinate, or the thickness of the 2nd bend holds 52% o'clock of thickness less than the long handle subordinate, following tendency will occur, promptly can not obtain sufficient bending effect, and control performance is very low.
Again, when the thickness of the 1st bend during less than the thickness of the 2nd bend, the behavior that the sportsman moves in the time of just can showing similar pitching.
Tennis racket of the present invention can be got to ball the other side's court promptly, forcefully, can play the ball with certain angle.
The length of bend is during less than 30mm, and bending effect is very little, though bending effect is big when surpassing 70mm, control performance is extremely low, therefore, does not wish like this.
Below with description of drawings 1 example of the present invention.
Fig. 1 is the axonometric drawing of the tennis racket of expression the invention process form, and Fig. 2 is a side view, and Fig. 3 is the partial enlarged drawing of Fig. 2.
As shown in Figure 1, tennis racket 1 is made of frame portion 2, long handle portion 3 and the portion 4 that holds bat, and frame portion 2 and long handle portion 3 strengthen the resin-shaped all-in-one-piece with reinforcing fiber.Reinforcing fiber is strengthened resin, synthetic fibers fortified resins such as for example available carbon fibre fortified resin, glass fiber-reinforced resin or aramine etc.
In long handle portion 3, be provided with the 1st bend 5a, 5b, it is positioned on the position than the more close frame of the central part of the length direction of long handle portion portion 2, with little than other thickness of the thickness of the tensioning face vertical direction of this string of a musical instrument.The ideal position of the 1st bend 5a, 5b is near the upper end of long handle portion 3.The thickness of thin part of the 1st bend is preferably in the 55-95% scope of thickness of lower end 3a of long handle portion 3.The ideal length of the 1st bend is 30-70mm.
On position than the more close long handle of the central part portion 3 of the length direction of frame portion 2, be provided with the 2nd bend 6a, 6b, it perpendicular to little than other parts of the thickness of string of a musical instrument tensioning face direction.The ideal position of the 2nd bend 6a, 6b is near the lower end of frame portion 2.The thickness of thin part of the 2nd bend 6a, 6b is preferably the 52-98% of the thickness of the 3 lower end 3a of long handle portion, and its ideal length is the 30-70mm scope.Talk about above, the thickness of the 1st bend 5a, 5b is preferably less than the thickness of the 2nd bend 6a, 6b.
Below, as shown in Figure 2, the front end 2a of frame portion 2 is set at maximum ga(u)ge, reduces gradually towards bend 6a thickness from this leading section.
Fig. 3 represents the pattern enlarged drawing of the 1st bend 5a and the 2nd bend 6a.The 1st bend 5a and the 2nd bend 6a are that necking down becomes bend.
Like this, by the 1st bend 5a, 5b and the 2nd bend 6a, 6b are set, and produce and the same 2 sections effects (2 sections bending effects) of elbow, wrist of human body, therefore, can control tennis well, can be equipped with the ball rapidly of angle.
As mentioned above, the thickness setting of the front end 2a of frame portion 2 gets maximum, and 5 thickness reduce gradually from this leading section towards bend, and the weight of the leading section 2a of frame portion 2 is compared with its bottom, heavier relatively (becoming the state of what is called " head is heavy ").Therefore, because the effect of the double effects that the bending effect of the 1st bend 5a, 5b and the 2nd bend 6a, 6b and head weigh, speed of swing is faster.As a result, can adapt to the requirement that nearest tennis tournament improves speed fully, the tennis of the fast speed of can sounding the night watches.In addition, when speed of swing was accelerated, bounce also strengthened rapidly, can further be equipped with the ball rapidly of angle.
For 1 example, the material of frame portion, long handle portion and the portion that holds bat uses the carbon fibre fortified resin, the size of each several part is set as follows respectively: frame minister degree be 341mm (wherein, the length of the 2nd bend is 34mm), thickness be 22.6mm (for long handle lower end thickness 94%), nose thickness (maximum ga(u)ge) is 27.4mm; The length of long handle portion is 174mm (wherein, the length of first bend is 34mm), and the thickness of lower end is 23.1mm, the thickness of the 1st bend be 21.7mm (for the long handle subordinate hold thickness 94%); The length of portion of holding bat is 188mm, makes tennis racket with known method.
Produced like this tennis racket can be brought into play the effect of good bending effect and " head is heavy ", can fight back fire ball when in fact being at tennis.
In addition, in this example, the 2nd bend in the frame portion is located near the frame subordinate side, but bend also can be located on the position than the more close long handle of the central part portion of the length direction of frame portion.
As mentioned above, according to 1 example of the present invention, owing to the thickness setting of frame portion front end is got maximum, the weight of its bottom of weight ratio of frame portion front end becomes the heavy state of so-called head.Therefore, the double action of the heavy effect of bending effect and head is compared with the tennis racket that only is provided with the bend effect, and the speed on tennis racket surface further improves.Like this, just, can adapt to nearest high-speed match.
As mentioned above, tennis racket of the present invention is the tennis racket with frame portion, long handle portion and the portion that holds bat, on the position of more close above-mentioned frame portion than the central part of the length direction of above-mentioned long handle portion, be provided with the 1st bend, the 1st bend is perpendicular to little than other parts of the thickness on the direction of string of a musical instrument tensioning face; On the position of more close above-mentioned long handle portion than the central part of the length direction of above-mentioned frame portion, be provided with the 2nd bend, thickness on the vertical string of a musical instrument tensioning face direction of the 2nd bend is littler than other parts, owing to have the 1st bend and the 2nd bend, so can control tennis well by 2 sections bending effects, can be equipped with the ball rapidly of angle.As a result, tennis racket of the present invention is crooked easily, and when playing ball, ball can remain on the string of a musical instrument to a certain extent, can guarantee to contact with ball the time of appropriateness.Therefore, can award ball speed, ball is rotated easily, and the control performance of ball might as well.
Claims (2)
1. tennis racket, it is the tennis racket with frame portion, long handle portion and the portion that holds bat,
It is characterized in that, on the position of more close above-mentioned frame portion, be provided with the 1st bend than the central part of the length direction of above-mentioned long handle portion, the 1st bend, perpendicular to little than other parts of the thickness of string of a musical instrument tensioning face direction;
On the position of more close above-mentioned long handle portion than the central part of the length direction of above-mentioned frame portion, be provided with the 2nd bend, the 2nd bend, perpendicular to little than other parts of the thickness of string of a musical instrument tensioning face direction;
The thickness of thin part of above-mentioned the 1st bend is in the long handle subordinate holds the scope of 55-95% of thickness;
The thickness of thin part of above-mentioned the 2nd bend is in the long handle subordinate holds the scope of 52-98% of thickness;
The thickness of above-mentioned the 1st bend is less than the thickness of the 2nd bend;
The length of above-mentioned the 1st bend and the 2nd bend is respectively 30-70mm;
The shape of above-mentioned frame portion is: the thickness maximum of front end, and hold thickness to reduce gradually downwards from front end.
2. tennis racket according to claim 1, from the tensioning face of the string of a musical instrument, the 1st bend and the 2nd bend are on the left-right symmetry position of frame portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP269944/1998 | 1998-09-24 | ||
| JP26994498A JP3272679B2 (en) | 1998-09-24 | 1998-09-24 | tennis racket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1248475A CN1248475A (en) | 2000-03-29 |
| CN1145507C true CN1145507C (en) | 2004-04-14 |
Family
ID=17479391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991202457A Expired - Fee Related CN1145507C (en) | 1998-09-24 | 1999-09-24 | Racket for tennis |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3272679B2 (en) |
| CN (1) | CN1145507C (en) |
| TW (1) | TW518986U (en) |
-
1998
- 1998-09-24 JP JP26994498A patent/JP3272679B2/en not_active Expired - Fee Related
-
1999
- 1999-06-29 TW TW091209360U patent/TW518986U/en unknown
- 1999-09-24 CN CNB991202457A patent/CN1145507C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW518986U (en) | 2003-01-21 |
| CN1248475A (en) | 2000-03-29 |
| JP2000093558A (en) | 2000-04-04 |
| JP3272679B2 (en) | 2002-04-08 |
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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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040414 Termination date: 20110924 |