CN1089874A

CN1089874A - Sport racket

Info

Publication number: CN1089874A
Application number: CN93120566A
Authority: CN
Inventors: M·E·柯蒂斯
Original assignee: Dunlop Ltd
Current assignee: Dunlop Ltd
Priority date: 1992-12-08
Filing date: 1993-12-02
Publication date: 1994-07-27
Also published as: MY131627A; DK134293D0; CA2110220A1; DK134293A; DE4341686A1; GB9225731D0

Abstract

Establish an improved articulated joint by enter the handle place at dabber, a kind of racket that improves operating characteristic that has is provided.Dabber improves in pliability vertical with string of a musical instrument plane and by the direction in the plane of its axis along one, but along one with string of a musical instrument plane parallel and unaffected by the direction in the plane of its axis.This is by dabber being fixed on along obtaining being parallel on the elastomeric joint that string of a musical instrument direction is a rigidity for flexibility perpendicular to the direction on string of a musical instrument plane, so dabber can enter the spot wobble of handle part around it.

Description

Sport racket

The present invention relates to sport racket, particularly have the sport racket of an independent dabber, for example racket.A kind of like this racket comprises that mainly one is installed in the head that has the string of a musical instrument on the handle by means of a dabber.The overall stiffness of dabber and this rigidity can influence the serviceability of racket along the distribution of dabber length.This be because the racket head square stance before the shot and during dabber bending and reset can influence the speed of racket head, thereby so just can increase the speed of the general speed raising shuttlecock of racket head.And, adopt this method to can be " sensation " that the sportsman provides a kind of improvement, this sensation is very good for batting effectively and satisfying the sportsman.

The pliability that improves dabber is (during top-loaded when handle is clamped regularly at racket, side-play amount according to the increase at racket top is measured) normally favourable, but this also often causes the durability variation of dabber, although its disadvantage also have on plane with the string of a musical instrument vertical and by the plane of dabber axis in the raising pliability be favourable, but it is disadvantageous improving pliability at one with the plane parallel of the string of a musical instrument and in by the plane of dabber axis, and this is because this chance minimizing that often causes the center of racket head to contact with shuttlecock.

According to the present invention, one sport racket comprises a head that limits the intersection string of a musical instrument, one dabber and a handle, dabber is connected in head with its first end, be connected in handle with its second opposed end, it is characterized in that handle has a central longitudinal axis, wherein dabber roughly is installed in the handle along described central axis by a fixture, described fixture is fixed dabber basically rigidly along the direction in the plane of the intersection string of a musical instrument, allow simultaneously the user mode lower edge with intersect flexibly fixing dabber of the vertical direction in the plane of the string of a musical instrument, dabber just can enter the spot wobble of described handle around it along described vertical direction like this.

The present invention also relates to a dabber is installed in method on the handle, whereby along one vertical with string of a musical instrument plane and will obviously increase by its pliability of the direction in the plane of dabber axis, but can not increase in its pliability with string of a musical instrument plane parallel and in simultaneously by the plane of dabber axis.This obtains by a specific process, and dabber is fixed in the handle in the method, and this fixed form allows to have elastic movement to a certain degree in a plane in handle, does not then allow in another plane.Elastic movement allows dabber to rotate around the fulcrum that dabber enters the handle place, and this rotates so just can increase the flexibility of dabber under load.In other words, the side-play amount that has the racket top of this fixed system is the side-play amount sum, i.e. the side-play amount that produces because of the bending of dabber and rotate the side-play amount that is produced around its fulcrum because of the dabber that elasticity allowed of fixed system.Yet fixed system is rigidity basically in vertical plane, and the side-play amount on racket top only is because of the bending of dabber along this direction like this.See Fig. 1 to 4, wherein:

Fig. 1 is the schematic side elevation of a racket 10, promptly in the plane of the string of a musical instrument, wherein head 11 is installed on the

dabber

12, and 12 of dabbers are installed on the handle 13 by means of a fixture 14a, between an elastomer packing ring 15 at the some place that the butt end and the dabber of handle enters handle.Fixture comprises a spring 14a, and it can flexibly move along direction AA ';

Fig. 2 is the front schematic view of same racket shown in Figure 1, and shows the fixture 14b that can not move along direction BB ';

Fig. 3 schematically shows when racket head 11 and bears as shown in Figure 1 load " L ", for example causes what happens because of batting.Spring 14a allows dabber displacement " W ", and the 15 permission dabber swings of elastomer packing ring, produces a total side-play amount " w+d " like this;

Fig. 4 schematically show when racket head 11 bear as shown in Figure 2 be parallel to the load " L " that header planes applies the time what happens.Basically the fixed form of rigidity stops the end motion of dabber in this plane, and the total drift amount of head is limited in " d ", promptly around the result of packing ring 15 swings.

Fig. 5 is the cutaway view of the part of a sport racket, and it is in a plane perpendicular to string of a musical instrument plane, and wherein dabber 16 is bonded in the fixture 17, and fixture 17 comprises a spring part 17 of being made by an elastomer compounds.Spring part 17 has plug 18, paired plug 18 be located at several on the handle 20 to the pair of meshing in the hole 19.Design spring part 17 like this, promptly it is flexible along direction A-A ', but it is rigidity basically along direction B-B '; With

Fig. 6 is the cutaway view by handle 20 shown in Figure 5, wherein shows the spring part fixture with an end-view.

Fig. 5 and 6 show the lengthwise position of how setting dabber 16 by means of the plug 18 on the spring part 17 that is positioned at the paired hole 19 on the hollow handle 20.By plug 18 is moved into the fixed position that different hole centerings can vertically be adjusted spring part, and this can adjust by the length that increases or reduce dabber, so that gratifying racket total length to be provided.Clearly can improve the pliability of looking at dabber by dabber and in perpendicular to the plane of the string of a musical instrument by this mode.Clearly the quality of fulcrum 21 also is a key factor.It can perhaps can be made by other material that itself has elastic property by making with handle material identical materials.Fulcrum is preferably flexible, click takes place when preventing to use racket, and for example it can be made by the elastomeric material of packing ring form.

As long as can satisfy dabber in the requirement of the rigidity of rotation direction and longitudinal direction location and the side direction pliability is only arranged on required plane, spring part can have different shape.The material of making spring part can be a metal, rubber or plastics or their combination, perhaps other suitable material, the difference on the rigid nature (consistency and elasticity) be since make spring part material synthetic/form produce.

Claims

1, one sport racket (10), comprise a head (11) that limits the intersection string of a musical instrument, one dabber (12) and a handle (13), dabber is connected in head with its first end, be connected in handle with its second opposed end, it is characterized in that handle has a central longitudinal axis, wherein dabber is by a fixture (14a, 14b) roughly be installed in the handle along described central axis, described fixture is fixed dabber basically rigidly along the direction in the plane of the intersection string of a musical instrument, allow simultaneously the user mode lower edge with intersect flexibly fixing dabber of the vertical direction in the plane of the string of a musical instrument, dabber just can enter point (15) swing of described handle around it along described vertical direction like this.

2, sport racket as claimed in claim 1 is characterized in that fixture comprises a spring part.

3, sport racket as claimed in claim 1 or 2 is characterized in that spring part comprises an elastomer, plastics or metal material.

4, as the described sport racket of above arbitrary claim, it is characterized in that dabber is bonded on the fixture.

5, as the described sport racket of above arbitrary claim, the configuration that it is characterized in that fixture is at a direction fixing dabber rigidly, allows elasticity at other direction.

6,, it is characterized in that fixture stops dabber to rotate with respect to handle basically as the described sport racket of above arbitrary claim.

7,, it is characterized in that fixture is positioned on the handle near the end away from head as the described sport racket of above arbitrary claim.

8, as the described sport racket of above arbitrary claim, it is characterized in that entering the some place of handle at dabber, dabber is by an elastomer, and plastics or metalwork (15) flexibly are held in place.

9, as the described sport racket of above arbitrary claim, it is characterized in that entering the some place of handle at dabber, dabber flexibly is held in place by a packing ring (15).

10,, it is characterized in that the position of fixture can be along the central axis adjustment of handle as the described sport racket of above arbitrary claim.

11, sport racket as claimed in claim 10 is characterized in that allowing the device adjusted to be included in complementary structure on fixture and the handle.