CN1099302C

CN1099302C - Racket

Info

Publication number: CN1099302C
Application number: CN98120738A
Authority: CN
Inventors: 松王清志
Original assignee: Gosen Co Ltd
Current assignee: Mot High Fiber; Gosen Co Ltd
Priority date: 1997-09-26
Filing date: 1998-09-25
Publication date: 2003-01-22
Anticipated expiration: 2018-09-25
Also published as: CN1213575A

Abstract

A badminton racket, to control and adapt to high-speed badminton well through setting a first and a second flexible parts in approximately longitudinal center and a positon closer to the frame part than to the longitudinal center. The badminton racket comprises a handle part, a shaft part and a frame part. The diameter of shaft part is generally same. A first flexible parts is arranged in approximately center of shaft part. Second flexible part thinner than the other parts are provided in positions closer to the shaft part than to the longitudinal center of the frame part.

Description

Racket

The racket that the present invention relates to use in the badminton game.The what is called that specifically relates to have two elastic portion has the racket of two inflection points.

Usually, the dabber diameter of existing racket is uniformly, in the roughly middle part of bar a DISCRETE ELASTIC SUPPORTS that is called the inflection point is arranged.Real fair 3-42946 communique, real fair 4-40687 communique, spy open flat 6-190086 communique and disclose this racket with homogeneous diameter.In addition, opening flat 5-68561 communique has also proposed to be provided with a plurality of small diameter parts on bar in fact.

But the problem that above-mentioned existing racket exists is: the poor flexibility because bar portion rigidity is big, an and DISCRETE ELASTIC SUPPORTS is only arranged in the roughly middle part of bar portion, so whole bar portion lacks flexibility.And, if bar portion poor flexibility then can not be controlled shuttlecock well, be difficult to get the cunning ball of angle.In addition, if bar portion poor flexibility is then cutting or push away when pasting the sudden shuttlecock of racket wire side, pairing slow in one's movements.In addition, if bar portion poor flexibility, then swing speed is slow, can not adapt to the quickening of ball speed in the nearest badminton game.And, in addition also the expectation develop bounce bigger, can get the speed racket of shuttlecock faster.

The present invention is in order to solve the above-mentioned problems in the prior art, and purpose provides a kind of racket that can control shuttlecock well and can adapt to the high speed shuttlecock.

In order to achieve the above object, the structure of racket of the present invention has frame portion, bar portion and shank part, it is characterized in that: above-mentioned bar portion longitudinally roughly the centre position have the 1st elastic portion, and have 2nd elastic portion littler than other parts diameter in position than the more close above-mentioned frame in vertical centre position of above-mentioned bar portion portion.

If adopt the racket of this structure, just can be in above-mentioned bar portion centre position and have elastic portion (inflection point) near the position, two places of the position of above-mentioned frame portion in the centre position longitudinally roughly longitudinally than above-mentioned bar portion.Below exist the inflection point to be called two inflection points position, two places.Like this,, then compare, the effect of storage power is not only arranged, but also can bring into play than the better swing speed of existing racket with the situation of existing single inflection point if as people's wrist and elbow, have two inflection points.Like this, if energy storage power then can be controlled shuttlecock well.And, if swing speed is fast, then can improve bounce, can get the cunning ball of angle, also can in smash, get angle.And, can adapt to the quickening of ball speed in the nearest badminton game fully, can get speed shuttlecock faster.

In addition, in the structure of the invention described above, preferably the 2nd elastic portion is located near the lower end of frame portion.According to this desirable embodiment, under the situation of similar human arm, the 2nd elastic portion is equivalent to the joint of wrist, combine with the effect of the 1st elastic portion that is equivalent to elbow joint, having accelerated striking surface is the swing speed of frame portion, therefore, has improved bounce, the cunning ball of angle can be got, also angle can be got during smash.

In an embodiment of the present invention, the shape of the bar portion certain straight-bar shape of diameter preferably.And in this case, the diameter of the 2nd elastic portion preferably is set at 70.0～99.5% of bar portion other parts diameter.According to this desirable embodiment, can guarantee working strength, and can bring into play maximum elastic effect.If be lower than 70.0%, working strength deficiency then, if surpass 99.5%, then elastic effect is not obvious.And in the case, preferably the length setting with the 2nd elastic portion is 10～30mm, according to this desirable embodiment, can access the elastic effect of bringing into play bounce to greatest extent.Surpass 30mm, though elastic effect increases, elastic restoring force reduces, and has reduced bounce on the contrary.Be lower than 10mm, elastic effect is not obvious.And in the case, the connecting portion of bar portion and frame portion preferably is strengthened to when playing ball aforementioned racquet frame portion and can reverse.According to this desirable embodiment,, thereby increased efficient beating area of the bat on schedule even the some batting also can be got the ball of high bounce partially.In the case, the thickness that strengthens the enhancing portion of bar portion and frame portion connecting portion preferably is set at 150～300% of bar portion diameter except that the 2nd elastic portion.According to this desirable embodiment, can keep higher durability.Below 150%, can not be strengthened effect fully, putting square stance partially, striking surface is the face poor stability of frame portion.Thereby the moment of torsion increase, the result has reduced bounce, has reduced efficient beating area of the bat on schedule.300% has then increased the resistance of relative air when above, has fallen at the end the so-called sky performance of splitting.In addition, consider also to have surpassed weight limit, make swing speed slack-off from the angle that weight increases.

And in the structure of the invention described above, ideal situation is that the shape of bar portion sees it is the thin taper of front end from shank part.According to this desirable embodiment, combine with the effect of the 2nd elastic portion and to have improved swing speed.Therefore, bounce improves, and can get the cunning ball of angle, also can get angle during smash.And, in this case, the average diameter of the 2nd elastic portion preferably be set at other position of bar portion average diameter 70.0～99.5%.And in this case, the length of the 2nd elastic portion preferably is set in the scope of 10～30mm.And in this case, the connecting portion of bar portion and frame portion preferably is strengthened to the aforementioned racquet frame of square stance portion and can reverse.And in the case, the thickness that strengthens the enhancing portion of bar portion and frame portion connecting portion preferably is set at 150～300% of bar portion average diameter except that the 2nd elastic portion.

Below, further describe the present invention according to embodiment.

Fig. 1 is the oblique view of an embodiment of racket of the present invention.

Fig. 2 is the front view of an embodiment of racket of the present invention.

Fig. 3 is the side view of an embodiment of this anti-bright racket.

Fig. 4 is the 2nd elastic portion partial enlarged drawing on every side of an embodiment of expression racket of the present invention.

Fig. 5 is the part sectioned view of another embodiment of racket of the present invention.

Figure 1 shows that the oblique view of an embodiment of racket of the present invention, Fig. 2 is its front view, and Fig. 3 is its side view, and Fig. 4 is the partial enlarged drawing around expression the 2nd elastic portion.

As Fig. 1～shown in Figure 4, racket 1 is made of lever 2, dabber 3 and frame 6, has tightened string (not shown) on frame 6.

The diameter of bar portion 3 integral body is basic identical, in the roughly middle part of bar portion 3 the 1st elastic portion 4 is arranged.Be provided with diameter 2nd elastic portion 5 littler near near the lower end of frame 6 in the bar portion 3 than the other parts of bar portion 3.Herein, the 2nd elastic portion 5 is the certain straight-bars of diameter.The diameter of the 2nd elastic portion 5 preferably is set at the 70.0-99.5% of other position diameter of bar portion 3.If the diameter of the 2nd elastic portion 5 is set within this range, then can keep practical intensity, can give play to maximum elastic effect again.If be lower than 70.0%, then practical intensity is not enough, and surpasses 99.5%, and then elastic effect is not obvious.And, the length of the 2nd elastic portion 5 preferably is set in the scope of 10～30mm.If the length setting of the 2nd elastic portion 5 in this scope, then can be brought into play the elastic effect of bounce to greatest extent.Surpass 30mm, though elastic effect increases, elastic restoring force descends, and has reduced bounce on the contrary.Be lower than 10mm, then elastic effect is not obvious.The actual situation that racket 1 impacts shuttlecock of holding of watching can confirm that the 1st elastic portion 4 and the 2nd elastic portion 5 both sides all bring into play elasticity.That is, can confirm two inflection points,

As mentioned above, owing near the lower end of close the frame 6 of bar portion 3, be provided with another the 2nd elastic portion 5 of the 1st elastic portion 4 of the roughly middle part that is different from bar portion 3, so can obtain following effect.That is, if at two places DISCRETE ELASTIC SUPPORTS is set like that with the wrist and the elbow of human arm, then compare with the situation of existing single inflection point, existing " storage of power " effect can be brought into play again than existing racket swing speed faster.If energy storage power then can be controlled shuttlecock preferably.In addition, if swing speed is accelerated, then bounce improves, and just can get the cunning ball of angle, also can get angle during smash.And, can adapt to the quickening of ball speed in the nearest badminton game fully, can get speed ball faster.In addition, the part of bar portion 3 attenuates, and splits the sky performance thereby improved, and swing speed is faster.

Among Fig. 1～Fig. 4, the 8th, the front end of bar portion 3 is fixed on enhancing portion on the frame 6 integratedly.The thickness of this enhancing portion 8 preferably is set at 150～300% of bar portion 3 diameters except that the 2nd elastic portion 5.Herein, the thickness of enhancing portion 8 is enhancing portion 8 Breadth Maximums when seeing racket situation (Fig. 4) from the front.In addition, in the present embodiment,, might not be defined as the width of this part, can suitably determine according to the shape of enhancing portion 8 though the width of the part of the most close frame 6 is the Breadth Maximum of enhancing portion 8.Like this, owing to be provided with enhancing portion 8, can keep very high durability.And, because by enhancing portion 8 is set like this, strengthened the combination of bar portion 3 and frame portion 6, reduced the torque (action of torsional direction) of frame 6, so frame portion 6 can not reverse when playing ball.Even consequently the some batting also can be got the ball of high bounce partially, thereby has increased striking surface on schedule.

Figure 5 shows that the fragmentary cross-sectional view of another embodiment of racket of the present invention.

As shown in Figure 5, bar portion 3 for example forms that wall thickness is the hollow pipe shape of 1～2mm, roughly the 1st elastic portion 4 is arranged the middle part at it.And, near near the lower end of frame 6 average diameter 2nd elastic portion 5 littler than the average diameter at other position of bar portion 3 is being set in the bar portion 3.Among Fig. 5, the 8th, the front end of bar portion 3 is fixed on enhancing portion on the frame 6 integratedly, the thickness of this enhancing portion 8 preferably is set at the 150-300% of the average diameter of the bar portion 3 except that the 2nd elastic portion 5.

From shank part 2, bar portion 3 comprises the thin taper of the 2nd elastic portion 5 formation front ends.That is, the diameter of bar portion 3 is maximum near shank part 2, dwindles gradually from this position to enhancing portion 8 its diameters.In this case, the average diameter of the 2nd elastic portion 5 preferably be set at bar portion 3 other parts average diameter 70.0～99.5%.The length of the 2nd elastic portion 5 preferably is set in the scope of 10-30mm.The actual situation that racket 1 impacts shuttlecock of holding of watching can be confirmed equally with the situation of the racket 1 of Fig. 1～Fig. 4, and the 1st elastic portion 4 and the 2nd elastic portion 5 both sides have all given play to elasticity.That is, can confirm two inflection points,

As mentioned above, be seen as the thin taper of front end from shank part 2, therefore combine, accelerated swing speed, thereby improved bounce, can get the cunning ball of angle, also can get angle during smash with the effect of the 2nd elastic portion 5 because bar portion 3 forms.

For racket shown in Figure 51, though the 2nd elastic portion 5 also is taper, be not limited to this kind shape, also can be the certain straight tube of diameter.

Below, the particularly manufacture method of bar portion 3 of racket 1 is described.

In order to realize intensity height in light weight, bar portion 3 the most handy reinforcing fibers strengthen resin manufacture.Reinforcing fiber strengthens the synthetic fibers fortified resin etc. that resin can use for example carbon fibre fortified resin, glass fiber-reinforced resin or fragrant acid amides etc.

The manufacturing process that reinforcing fiber strengthens resin can adopt well-known manufacturing process such as the method for lamination or filament winding that pre-impregnated resin cloth (impregnating resin sheet) is rolled.In addition, resin can use well-known polyimides, thermosetting resins such as epoxy, or thermoplastic resins such as nylon, polyester.

In the present embodiment, the manufacture method of bar portion 3 adopts the pre-preg lamination method usually.And, when forming taper or thin part, top multilayer is cut away, strengthen this part by filament winding.When adopting filament winding to make bar portion 3, can be by establishing the coiling angle, promptly the angle of bar axle forms this part relatively.

As an example, use epoxy resin-impregnated on carbon fiber sheet and the pre-impregnated resin cloth that obtains as material, utilize lay-up method to make the bar portion 3 of the hollow tubular of the about 1.5mm of wall thickness.In the case, the length setting with bar portion 3 is 420mm (the length 25mm that comprises the enhancing portion 8 on the frame 6 that the front end of bar portion 3 is fixed on integratedly, the length 180mm of the part in the insertion lever 2.Therefore, from outside the length of the bar portion 3 of watching be 215mm.), with the diameter of the bar portion (straight-bar) 3 of shank part 2 coupling parts be 7.55mm, the diameter (the thinnest part) that distance connects the 10mm of bar portion of enhancing portion 8 the 2nd elastic portion 5 far away be 7.40mm (be bar portion 3 other position diameter about 98%), the length of the 2nd elastic portion 5 is 15.0mm.And the Breadth Maximum of enhancing portion 8 is 19.4mm, and maximum ga(u)ge is 12.0mm, and the ratio of the relative bar of the Breadth Maximum of enhancing portion 8 portion 3 diameters is 257%.In addition, adopt well-known method to make lever 2 and frame 6.Lever 2, bar portion 3 and frame 6 composition-bodies are formed racket 1.

The racket 1 that obtains like this has good two inflection points characteristic, the actual situation that racket 1 impacts shuttlecock of holding of watching, and its swing speed is accelerated, and can adapt to the quick acting of shuttlecock.Why obtaining good like this result is because as long as the power bar portion 3 of utilization wrist will be crooked, be easy to ball is returned with its bounce.Certainly also can improve batting performance and touch.

In addition, in the above-described embodiments, though the 2nd elastic portion 5 be arranged near the lower end of frame portion 6, near being provided with the lower end that the position is not limited to frame portion 6 of the 2nd elastic portion 5, also can be arranged on than bar portion 3 longitudinally central portion near the position of frame 6.

Can obtain following effect according to racket of the present invention described above:

(1) effect of two inflection points;

A: improve elasticity

When there are the inflection point in wrist and elbow with human body at two positions like that, then with existing list The situation of inflection point is compared, and the effect of existing storage power can be given full play to than existing shuttlecock again Clap faster swing speed. Like this, if energy storage power then can be controlled shuttlecock well. In addition Outward, if swing speed is accelerated, then bounce improves, and can get the cunning ball of angle, smash The time also can get angle. In addition, can adapt to the quickening of ball speed in the nearest badminton game fully, Can get faster ball of speed. In addition, for prior art, although can adopt simply Bar is attenuated be used as increasing flexible means, but can cause torque (action of torsional direction) to increase Greatly, consequently reduced on schedule striking surface.

B: improved and split sky (Wind and cut り)

Bar section part is attenuated, can improve and split the sky performance, accelerate swing speed.

(2) the enhancing effect of the joint portion of bar section and bat section

Owing to strengthened the combination of bar portion and bat portion, reduced the torque (action of torsional direction) of bat portion, so square stance bat portion can not rotate.Even consequently point is batted and also can be got the ball of high bounce partially, increased striking surface on schedule.

Claims

1. racket with frame portion, bar portion and shank part, it is characterized in that: above-mentioned bar portion longitudinally roughly the middle part have the 1st elastic portion, and, have diameter 2nd elastic portion littler in the position of the more close above-mentioned frame in middle part portion longitudinally than above-mentioned bar portion than other parts diameter.

2. racket as claimed in claim 1 is characterized in that: the 2nd elastic portion is arranged near the lower end of frame portion.

3. racket as claimed in claim 1 is characterized in that: the shape of bar portion is the certain straight-bar shape of diameter.

4. racket as claimed in claim 3 is characterized in that: the diameter of the 2nd elastic portion is set at 70.0%～99.5% of bar portion other parts diameter.

5. racket as claimed in claim 3 is characterized in that: the length of the 2nd elastic portion is in 10～30mm scope.

6. racket as claimed in claim 3 is characterized in that: the connecting portion of bar portion and frame portion should be strengthened to the above-mentioned frame of square stance portion and can not reverse.

7. racket as claimed in claim 6 is characterized in that: the size that strengthens the enhancing portion of above-mentioned bar portion and frame portion connecting portion is set at 150%～300% of bar portion diameter except that the 2nd elastic portion.

8. racket as claimed in claim 1 is characterized in that: the shape of bar portion sees it is the thin taper of front end from grip.

9. racket as claimed in claim 8 is characterized in that: the average diameter of the 2nd elastic portion be set at bar portion the other parts average diameter 70.0%～99.5%.

10. racket as claimed in claim 8 is characterized in that: the length of the 2nd elastic portion is in 10～30mm scope.

11. racket as claimed in claim 8 is characterized in that: the connecting portion of bar portion and frame portion should be strengthened to the above-mentioned frame of square stance portion and can not reverse.

12. racket as claimed in claim 11 is characterized in that: the size that strengthens the enhancing portion of above-mentioned bar portion and frame portion connecting portion is set at 150%～300% of bar portion average diameter except that the 2nd elastic portion.