CN2153392Y - Tennis racket - Google Patents

Abstract

The utility model provides an aluminum tennis racket. The thicknesses of the inner side face and the outer side face of a racket frame of the tennis racket are different. When a screen wire is penetrated through and arranged on the racket frame, the pulling force for tensing the screen wire is totally absorbed by the outer side face. Thus, the ratio of the different thicknesses of the inner side face and the outer side face of the racket frame can be utilized to make the weight of the entire racket frame unchanged, and the tensile strength of the racket frame is increased. Thereby, when a tennis ball is hit by the screen wire, the amount of deformation of the racket frame is small, and the ball hitting power is increased. If the tensile strength of the entire racket frame is maintained to be unchanged, the weight of the racket frame can be lightened, and the entire racket is made to become more sensitive when the racket is waved.

Description

Tennis racket

The utility model relates to a kind of tennis racket, particularly relates to the inside and outside different tennis racket of lateral thickness of a kind of frame.

Motion is one of important stress-relieving activity of modern.Not only can forget about operating pressure during motion, the long-time muscles and bones of constraining acquisition is alleviated.And in numerous motions with the motion of fashion at present that plays tennis especially.Tennis is deserved the beating with bad, and racket has accounted for very big factor, and a good racket can make the people handy, and in addition suitable again guidance and enough exercises then can improve fast, could improve interest and for a long time lasting.For the sportsman, on the arena, a racket that is fit to oneself more can elicit latent faculties, and gets the playing skill of the level of exceeding oneself.

The design of tennis racket frame is to allow the people feel merrily and lightheartedly to grip well, guides and supports, overturns well and be easy to activity, and will make the strength of the batting of swinging the bat, and brings into play the effect of maximum power.So present wire netting racket all to reduce the weight of racket, reaches the various favourable profiles of cooperation frame, the power that material increases batting.Though the frame improved structure had its advantage to exist, but still had ignored the existing problem of pulling force between frame and netting twine in the past.

As shown in Figure 1, netting twine 2 has been set on the frame 1.Be that ecto-entad places when wearing netting twine 2, be made into crisscross wire side in frame 1 inside, when being made into wire side, need firmly strain this netting twine 2, and pulling force 701 intensity of straining this netting twine 2 are supported by the lateral surface of frame 1 entirely, because all outer rims of frame 1 ring revolt netting twine 2 pulling force 701 outward and the stretching resistance 505 opposite with pulling force 701 directions exists, this pulling force 701 that exists between netting twine 2 and the frame 1 and stretching resistance 505 relations, not only influential to the weight of whole racket, more can influence the power that racket is batted.If the thickness that increases frame just can increase the tensile strength of frame, but international tournament has the regulation of the upper limit to the weight of tennis racket, therefore increase the thickness of frame, increase the weight of whole racket relatively, not only may be overweight, and the people less for universal weight machine or durability is relatively poor is swinging the bat down for a long time, and the action meeting slows up because of tired.

Main purpose of the present utility model is to provide a kind of aluminum tennis racket, the frame of described tennis racket is made medial and lateral face thickness difference, make frame do suitable allotment aspect stretching resistance and the weight, and make the weight of racket constant, the stretching resistance strength-enhanced, or the tension intensity of force is constant, and alleviates the weight of frame.

In order to realize above-mentioned goal of the invention, the handle portion of closed symmetry is extended in frame portion that tennis racket frame of the present utility model is and ovalize one-body molded by aluminium alloy and lower end, the frame lateral surface is provided with groove, groove is provided with perforation, perforation laterally runs through frame, and perforation has netting twine to place and netting twine is woven into crisscross face in frame portion; It is characterized in that: the lateral surface thickness of frame is thick than medial surface thickness when moulding, and when the type of being bent into became frame portion, the lateral surface position was in the outside of frame portion, and the medial surface position is in the inboard of frame portion; The thickness difference maximum of the inside and outside side of frame is 0.7mm, and minimum of a value is 0.1mm.

The inboard of the inside and outside side joining place of described tennis racket frame is integrated curved arc shape.

As shown in the above description, tennis racket of the present utility model compared with prior art has following advantage:

The utility model provides a kind of aluminum tennis racket, the inside and outside lateral thickness difference of frame, when netting twine was set in frame, the pulling force of netting twine tension was supported by the frame outside fully, therefore increase the thickness of frame lateral surface, reduce the thickness of medial surface, the weight of whole frame is constant, but after the increase of the lateral surface thickness of frame, the stretching resistance intensity of whole frame just increases, so when ball hit on netting twine, the deflection of frame was less, and increase the power of batting; If lateral surface thickness is constant, medial surface thickness reduces, and the intensity of a then whole frame can be constant, and weight but alleviates, and is sensitive more when whole racket brandished.

In order to realize the technical solution of the utility model, below in conjunction with the preferable possible embodiments of description of drawings.

Brief description of drawings:

Fig. 1 is the pulling force schematic diagram between frame and netting twine.

Fig. 2 is the stereogram of the embodiment frame of the utility model tennis racket.

Fig. 3 is the profile of frame portion of the embodiment frame of the utility model tennis racket.

Fig. 4 is the part sectional axonometric drawing that the embodiment of the utility model tennis racket has worn netting twine frame portion.

Fig. 5 is the vertical view of Fig. 4.

Fig. 6 is a kind of profile of frame portion of frame in the past.

Fig. 7 is the another kind of profile of the frame portion of frame in the past.

The utility model aluminum tennis racket, as shown in Figure 2, described tennis racket frame 10 is to make by aluminum alloy material is one-body molded, again frame 10 bending formings is extended the handle portion 12 of closed symmetry to having frame portion 11 and lower end, frame portion 11 ovalizes, handle portion 12 grips for hand.

Shown in Fig. 3,4, during frame 10 moulding, the thickness of its lateral surface 101 is thick than the thickness of medial surface 102, and forms the groove 111 of suitable length at the lateral surface 101 of frame portion 11, and is provided with the perforation 112 that several pass described frame 10 inside and outside sides 101,102 in groove 111.Frame 10 lateral surfaces 101 are suitable curved arc shape with two cohesive ends 1035,1036 of medial surface 102.When frame 10 bending formings became frame portion 11 and handle portion 12,102 positions of medial surface were in the inboard of frame portion 11 in the outside of frame portion 11 for 101 of lateral surfaces, and groove 111 is positioned at the outer ring side face of frame portion 11.In the time will placing netting twine 13 braiding wire sides, hollow bar nail 14 with line hole is set in each perforation 112 earlier, bar nail 14 passes perforation 112, and places for netting twine 13 in the line hole of described nail 14, avoids netting twine 13 directly to touch friction and hurt netting twine 13 with frame 10.

Shown in Fig. 5,6, during frame 10 moulding of present embodiment, the thickness T O of lateral surface 101 is 0.8mm, and the thickness T I of medial surface 102 then is 0.4mm.And if the thickness T C1 0.6mm of frame 21 in the past, then the average thickness of whole frame 10 of present embodiment is 0.6mm, therefore the average thickness of present embodiment frame 10 is identical with the thickness T C1 of described frame of racket in the past 21, so weight is also identical, but the thickness T O of frame 10 lateral surfaces 101 of present embodiment is thicker, so the tensile strength of the more described tennis racket in the past of the tensile strength of present embodiment tennis racket is strong, therefore on the power of batting of swinging the bat, the relative described tennis racket in the past of ratio of the power of present embodiment tennis racket strengthens many.Shown in Fig. 5 and 7, if another is the thickness T C2 0.8mm of frame 22 in the past, the tensile strength of then described frame in the past 22 is identical with present embodiment, but the average thickness of present embodiment is 0.6mm, so the weight of whole frame 10 of present embodiment is 3/4ths of the described frame of tennis racket in the past 22 weight, so the tennis racket of present embodiment is better than described tennis racket in the past aspect handling and sensitivity, therefore can in the frame portion 11 of present embodiment, increase some shock-absorbing structures, make the weight of whole racket approximately identical, but the tennis racket of present embodiment is constructed the injury of having lowered the square stance racket vibrations motions that cause because of having increased some shock-absorbings with the described weight of racket in the past.

The frame 10 of the utility model tennis racket is when moulding, the general one-tenth-value thickness 1/10 of the lateral surface 101 of frame 10 is between 0.6mm to 1.0mm, the one-tenth-value thickness 1/10 of medial surface 102 is then between 0.3mm to 0.7mm, so thickness difference of described frame 10 lateral surfaces 101 and medial surface 102, maximum is 0.7mm, and minimum of a value then is 0.1mm.

Claims (2)

1, a kind of tennis racket, the frame of tennis racket is one-body molded and the frame portion of ovalize and the handle portion that closed symmetry is extended in the lower end of aluminum alloy material, frame portion lateral surface is provided with groove, groove is provided with the perforation that laterally runs through frame, and perforation has netting twine to place and netting twine is woven into crisscross face in frame portion; It is characterized in that:

The lateral surface thickness of frame is thick than medial surface thickness, and the lateral surface position is in the outside of frame portion, and the medial surface position is in the inboard of frame portion; The thickness difference maximum of the inside and outside side of frame is 0.7mm, and minimum of a value then is 0.1mm.

2, tennis racket as claimed in claim 1 is characterized in that: the inboard of the inside and outside side joining place of frame is integrated curved arc shape.

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