CN2434024Y

CN2434024Y - Cord of racket

Info

Publication number: CN2434024Y
Application number: CN 00242764
Authority: CN
Inventors: 叶岳瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-25
Filing date: 2000-08-25
Publication date: 2001-06-13
Anticipated expiration: 2010-08-25

Abstract

The utility model relates to a cord of a racket, which comprises an inner layer and an outer layer, wherein, the inner layer is made of prearranged flexible and elastic plastic rubber materials, and a tooth-shaped edge is formed at a peripheral position; the outer layer is made of prearranged hard and wear-resistant plastic rubber materials. The cord is formed from the inner layer and the outer layer by extrusion molding; the cord texture is gradually hard from inside to outside; thus, the cord has the advantages of elasticity and wear resistance.

Description

Racket gut

The utility model relates to a kind of string of a musical instrument, particularly relates to a kind of racket gut.

The general string of a musical instrument is twisted with the fingers with nylon fine rule strand and is constituted, and contains immersion trough through one when strand is twisted with the fingers, and making to stick between the nylon fine rule has thermoplastic resin, and this thermoplastic resin makes the string of a musical instrument have elasticity.But thus, the string of a musical instrument can become softer and the shortcoming wearability, under the more serious situation, when racket when making shot, the string of a musical instrument is subjected to pellet impact to produce high pressure, high heat, can make the string of a musical instrument produce abrasion and ruptures.

In addition, the existing another kind of string of a musical instrument is to be coated with a moisture-curable type polyurethane layer in nylon fine rule outside, because this moisture-curable type polyurethane layer has harder characteristic, can make the string of a musical instrument possess preferable wearability, not have a shortcoming of wearability thereby can solve a string of a musical instrument.But this string of a musical instrument relatively also is short of elasticity, and to carry out square stance with the made racket of this string of a musical instrument, the anti-brisance that user's hand bears is big, causes athletic injury easily.

The utility model main purpose is, a kind of racket gut with elasticity and wearability is provided.

Provide a kind of racket gut according to the utility model, comprising:

One interior layer is made of the predetermined soft and flexible plastic material of tool, and its periphery forms the castellated edge that is concaveconvex shape;

One exterior layer is made of the plastic material of being scheduled to hard and tool wearability, and this exterior layer coats whole interior layer.

Above interior layer and exterior layer be extrusion molding one string of a musical instrument altogether, and this string of a musical instrument quality one by one by soft gradually hard, makes the advantage of the string of a musical instrument with elasticity and wearability from inside to outside.

Below by most preferred embodiment and accompanying drawing racket gut of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the schematic perspective view of the utility model one preferred embodiment.

Fig. 2 is the assembled sectional view of the above-mentioned preferred embodiment of the utility model.

Fig. 3 is the shaping schematic view of the above-mentioned preferred embodiment mould of the utility model.

Fig. 4 is the assembled sectional view of another preferred embodiment of the utility model.

Fig. 5 is the assembled sectional view of the another preferred embodiment of the utility model.

See also shown in Fig. 1,2, the utility model is a kind of racket gut, and it includes:

One interior layer 10 is made of predetermined soft and rubber-like plastic material, and in the present embodiment, this interior layer 10 can be by polyurethanes (PU) or nylon (nylon) material formation, and its periphery forms the castellated edge 11 that is the circular arc concaveconvex shape.

One exterior layer 20 is made of the plastic material of being scheduled to hard and tool wearability, and present embodiment is to be made of polyester (polyester) material, and exterior layer 20 coats whole interior layer 10.

For string of a musical instrument structure special more than the moulding, the extruding dies 30 of its moulding facility also changes.See also shown in Figure 3, extruding dies 30 bosoms are provided with an internal mold road 31, this internal mold road 31 can enter thus for the plastic cement group material of moulding interior layer 10, its discharging opening 311 inwalls are provided with the type hole 312 with castellated edge 11 same shapes, can mold the castellated edge 11 of interior layer 10 when so the group of extrusion expects.In addition, be provided with an external mold road 32 in the extruding dies 30, this external mold road 32 can enter thus for the plastic cement group material of moulding exterior layer 20, and external mold road 32 makes internal mold road 31 discharging openings 311 extend external mold road 32 discharging openings, 321 centre around whole internal mold road 31 peripheries.Like this, the plastic cement of moulding interior layer 10 and exterior layer 20 group material can the special string of a musical instrument structure of common extrusion molding the utility model.

More than be the utility model racket gut the be associated structure and the general introduction of position, then, the effect that the utility model expection can be realized is presented below again.

The utility model racket gut utilizes automation facility extrusion molding, does not need to twist work through strand, therefore makes quite quick.The utility model string of a musical instrument is total to extrusion molding with inside and

outside layer

10,20, and can promote inside and outside two-layer adhesion by castellated edge 11, and overall construction intensity is good.The utility model string of a musical instrument with interior soft, outside speciality such as hard, be that string of a musical instrument interior layer 10 has elasticity, make string of a musical instrument square stance possess buffer capacity, can not cause too big anti-shake to user's hand, can significantly reduce athletic injury, on the other hand, string of a musical instrument exterior layer 20 has wearability, when contacting with ball, the string of a musical instrument can more anti-strike and is had longer service life.

In addition, the utility model string of a musical instrument still can be made other two kinds of embodiment variation.See also shown in Figure 4, another string of a musical instrument 40 of the utility model is made of the exterior layer 42 of soft interior layer 41 and hard equally, and the castellated edge 411 of interior layer 41 peripheries is made laciniation, makes interior layer 41 and exterior layer 42 can closely be consolidated into one, can be more strong in conjunction with coating.See also shown in Figure 5, another string of a musical instrument 50 of the utility model includes three layers of an interior layer 51, an intermediate layer 52 and exterior layers 53 etc., this intermediate layer 52 is middle with exterior layer 53 between interior layer 51, its material is made of thermoplastic polyurethane class (T.P.U.) or harder nylon (nylon), with the made intermediate layer 52 of these materials, quality is hard than interior layer 51, but soft than exterior layer 53.Like this, soft outer hard characteristic is more obvious in the string of a musical instrument, and the batting performance is also better, and those skilled in the art should set up more than three layers as string of a musical instrument structure according to technology of the present utility model again certainly.

Claims

1. a racket gut is characterized in that, this string of a musical instrument comprises:

2. racket gut as claimed in claim 1 is characterized in that: this interior layer is made of the polyurethanes material.

3. racket gut as claimed in claim 1 is characterized in that: this interior layer is made of nylon material.

4. racket gut as claimed in claim 1 is characterized in that: this exterior layer is made of the polyester material.

5. racket gut as claimed in claim 1 is characterized in that: this interior layer castellated edge is the circular arc concaveconvex shape.

6. racket gut as claimed in claim 1 is characterized in that: this interior layer castellated edge indention shape.

7. racket gut as claimed in claim 1 is characterized in that: also be coated with an intermediate layer in the middle of this interior layer and the exterior layer.

8. as claim 1 or require 7 described racket guts, it is characterized in that: this intermediate layer is made of thermoplastic polyurethane class material.