CN105749507A

CN105749507A - Tennis racket

Info

Publication number: CN105749507A
Application number: CN201610297569.8A
Authority: CN
Inventors: 苟晓龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-08
Filing date: 2016-05-08
Publication date: 2016-07-13

Abstract

The invention relate to a tennis racket. The tennis racket disclosed by the invention is convenient to use, dual-layer design of a spring racket is low in consumption, and people do not need to repair grids after each time of playing. The tennis racket disclosed by the invention has the advantages that the dual-layer design of the spring racket is low in consumption, people do not need to repair grids after each time of playing, the cost is low, and the tennis racket is not liable to damage.

Description

A kind of tennis racket

Technical field

The present invention relates to a kind of tennis racket technical field.

Carbon fiber is a kind of high strength fibre, soft just as rope, after will being combined with resin matrix, and curing molding.The ratio of resin does not arrange general 38%----57% not etc., and the performance of the more high tennis racket of resin content is more poor, and price is more cheap.Also having resin content to reach less than 34%, this kind of tennis racket is occupation match special racket, and price is much more expensive.Conventional resin has: polyester, epoxy resin, thermoplastic resin etc., and wherein the carbon fibre web racket performance of epoxy resin-matrix is best, exceeds several times than other resin-based performances, and racket price is also the highest.The carbon fiber prepreg of the racket epoxy resin-matrix of occupation match is made, epoxy resin 34%, carbon fiber 66%.

Background technology

Current: the design principle of racket is largely dependent upon the type of player and the height of rank.Its principle includes strength, handling, comfortableness and mechanical breakdown etc..In the ideal situation, all of racket is all the maximization pursuing these indexs, and is finally select strength and control to be used as most important index in design.

Tennis racket strength

First design principle is exactly " in order to strength is bigger, use netting twine ".Netting twine can reply the strain energy of distortion of about 90% after being impacted, and independent ball (on crust resilience) can only reply the energy (Brody, 1995) of 45%.It addition, the energy of racket frame deformation does not reply to ball in time, increase the energy of ball, it is meant that the maximum deformation that arbitrary racket netting twine when being subject to impacting produces, further increase power than tennis or frame deformation.20 century 70s, after there is super-huge racket, start to use the principle of restriction netting twine bed size.Current principle has formulated the maximum of netting twine quality and width, in the measurement of framework two the inside.The trial maximizing netting twine bed size later concentrates on the racket face shape that employing is square, rather than simply circular.This causes that the length of all netting twines is very long, but deposits restriction structurally, and framework becomes to be difficult to manufacture, insufficient strength, and outward appearance feels also bad.Many manufacturers have employed bigger grommet, it is allowed to the effective dimensions of netting twine bed extends to the outside of framework.Another factor affecting power is Mass Distribution, although Mass Distribution is extremely difficult to optimal value, but principle is fairly simple, and namely light ball board swing is fast, increases striking speed;And heavy ball is clapped and swung slow, but owing to quality increases, equally possible cause that ball speed increases, particularly when when the quality of increase is added on striking point on the ball, all the more so.Therefore, when designing racket, should quality sufficiently small, it is possible to high speed swinging and impact, simultaneously have enough quality again, with the rebound characteristics of optimization tennis.

Tennis racket is handling

Small-sized head and the framework with higher overturning stability usually have good manipulation ability, because the deflection angle of netting twine and framework is less.The impact at deviation racket center produces the deflection of larger angle, and spring back angle when leaving netting twine by causing tennis is more than perfect spring back angle produced by smooth surface.This tiny difference may result in occurring when player competes on competition field bigger error.High anti-torsion performance makes the racket twisting in going smoothly less, thus obtaining striking point on the ball more accurately.Also impact is had on handling, it is noted that this point perhaps can be helpful to manipulation in this point separating netting twine.The periphery at racket frame is needed to increase quality (3 o'clock and 9 o'clock place) in order to manufacture the good small-sized head of torsional stability.More dense netting twine causes more efficient netting twine tension force, reduces angle deviating, also reduces rotation simultaneously, and this is for important some entrants.

Tennis racket comfortableness

The comfort level using racket is had oneself different impression by every tennis sportsman, and this makes the design parameter that the feedback information of sportsman is changed into reality extremely difficult.Up to now, the attention of sportsmen is concentrated mainly on and reduces in the impact to racket and consequent amplitude of fluctuation.Firmer racket often has relatively low anti-seismic performance compared with the old-fashioned thumb racket that former sportsman commonly uses, and therefore various additional being used for tests the anti-seismic performance providing extra.Firmer racket sound when impact is louder, and most of sportsmen do not like, and therefore have employed shockproof rope.Reduce the method impacted and include moving to impact center racket center, and increase the quality of ball frame.The factor relevant with comfortableness also has the polishing on racket surface and the material at the handle position of ball handle, and this is all had technique and the method for very standard by manufacturer.

Tennis racket mechanical breakdown

Racket used in high-caliber match is generally designed to be long as much as possible in required scope, the introducing of carbon fiber, racket is made to there occurs huge leap in performance and intensity, the internal intensity problem of racket is main relevant with the connection of the tip portion clapping frame body, mouth and racket, it is subject to the power from netting twine maximum herein, but most manufacture commercial city solves this problem by reinforcing this position.The demand of the market confrontation a little racket of dose-effect forces producer to improve their structural design as much as possible, is the formation of adapting to the complexity of different impulsive force condition and special racket type.When intensity subtracts seldom, alleviating the most methods of quality is the prepreg adopting resin content low, with lesser amount of skin of paint and remove the lining and expanding material that provide pressure in grinding tool.When test, owing to bearing improper load, these rackets show very fragile, because they are not designed to improper stress condition.The key of this process uses appropriate method of testing to ensure stressing conditions when being designed to meet match of racket.

The consumer group that tennis racket is different designs

Not having any to be suitable for all athletic perfect rackets, because player's level is different, the style of playing is also different.Different types of racket should be developed as much as possible to adapt to different consumers.

The racket that quality is less, face is a little greatly is always used when sportsman starts to play ball.Owing to not having skill and the strength of professional athlete, ball is often trained off by these sportsmen.Big racket compensate for this deficiency, and it enables these players better to control ball, to improve the standard faster, also happier.When ball trains off, torsion is also more stable, and this just saves a large amount of muscle power for sportsman, and big racket means great, it is possible to allow player have certain advantage at the study initial stage.

Club sportsmen of some amusements of regularly playing ball, promote the phase because being in level of playing ball, and they are ready to use the less racket of face, in order to better control ball determine the quality of racket according to the respective style of playing.Base-line type player, likes using long and heavy racket.Fulminant player then likes lightly and racket more flexibly.

Also having is exactly tour professional athlete, and racket face with strength is less, and quality is bigger than what abecedarian used.It is also bigger that the player of this level can wave heavy ball bat, the amplitude of oscillation faster.The racket that some top professional players use is all customization, and some is the twice of abecedarian's racket quality.

Summary of the invention

The present invention is in order to overcome the deficiencies in the prior art: the present invention provides a kind of tennis racket.

The technical scheme formula that invention solves includes: it is characterized in that: titanium alloy profile 1 and spring (2,3) two parts composition.

Described titanium alloy profile 1, is characterized in that: hollow titanium alloy profile shapes；

Wherein said spring (2,3) is characterized in that: is woven point upper and lower two bed devices by the extension spring of overall diameter 1.5mm-interior diameter 1mm and forms on titanium alloy profile 1.

The beneficial effects of the present invention is: easy to use, spring racket double layer design loss is little, removes reparation grid of every time having played ball from.

Present invention have the advantage that spring racket double layer design loss is little, remove reparation grid of every time having played ball from, with low cost, it is hardly damaged.

Accompanying drawing explanation

Fig. 1: be the schematic perspective view of the present invention.

Fig. 2: be the structural representation of the present invention.

In figure: by 1, titanium alloy profile, 2, spring and 3, spring.

Detailed description of the invention

Embodiment

It is characterized in that: titanium alloy profile 1 and spring (2,3) two parts composition.

Face size: 90sqin/581sqcm

Threading weight: 31.8oz/434g

Equilibrium point: 9ptsHeadLight

Racket hardness: 65

Frame width: 25mm

Material: KarophiteBlack/Basalt

Dynamics level: low

Speed of swing: fast

Handle skin: WilsonLeather

Line bed: 16*19

Bracing wire poundage: 60-100.

Above-described embodiment is the present invention preferably embodiment, but the specific embodiment of the present invention formula being not restricted to the described embodiments, the part of the not detailed description of the present invention is known technology.

Claims

1. the present invention provides a kind of tennis racket, it is characterized in that: titanium alloy profile (1) and spring (2,3) two parts composition.

2. titanium alloy profile according to claim 1 (1), is characterized in that: hollow titanium alloy profile shapes.

3. spring according to claim 1 (2,3) is characterized in that: is woven point upper and lower two bed devices by the extension spring of overall diameter 1.5mm-interior diameter 1mm and forms on titanium alloy profile (1).