CN2164869Y

CN2164869Y - Improved badminton racket

Info

Publication number: CN2164869Y
Application number: CN93219815U
Authority: CN
Inventors: 尤景三
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-22
Filing date: 1993-07-22
Publication date: 1994-05-18
Anticipated expiration: 2003-07-22

Abstract

The utility model relates to an improved badminton racket, comprising a ring-shaped tubular frame with opposite side ends, a tubular mandrel, and a T-shaped joint. Both horizontal side ends of the joint are respectively provided with an opening tubular part for the opposite side ends to be inlaid into. A vertical side end is provided with another opening tubular part for the upper end of the mandrel to be inlaid into so as to connect the frame with the mandrel. An outer covering layer is provided with a central area which covers the joint completely with a prearranged thickness. Left and right end parts are decreased from the left and the right sides of the central area outwards and gradually by a thickness to coat the surfaces of the opposite side ends in a method which is the same with outer diameters of the opposite side ends. A lower end part is decreased from the lower side of the central area outwards and gradually by a thickness to coat the upper end surface of the mandrel in a method which is the same with the outer diameter of the upper end of the mandrel.

Description

Improved badminton racket

The utility model relates to the racket of motion, particularly relates to a kind of racket of improvement.

Traditional racket generally is to come for the intercalation on ring frame two opposite side ends and the footstalk with a kind of T connector that is referred to as three links, in order to the two is linked together, this kind is configured in actual use and goes up unsatisfactory, because the intercalation end of this footstalk strike at the ball hard or use length after tend to break away from the through hole of this T connector, and make racket to use, then to be this T connector in addition with the junction of ring frame and footstalk can form the rank portion of projection and cause and be coated with the difficulty that is covered with.

Main purpose of the present utility model promptly is to provide a kind of racket of improvement, and it can make footstalk and firm being bonded together of ring frame.

Another purpose of the present utility model then is to provide a kind of racket of improvement, and the joint of its ring frame and footstalk is very level and smooth, and the rank portion that does not have projection produces.

For reaching aforesaid purpose, the racket of the utility model improvement includes an annular tube shaped framework, has two opposite side ends in order to finish a closed ring; One tubulose footstalk; And a T connector, its horizontal two side ends respectively has an open tubular portion, and for the embedding of these framework two opposite side ends, its vertical side has an open tubular portion, and the embedding for this footstalk upper end links together this framework and this footstalk whereby; It is characterized in that this racket more includes an outer covering layer, this outer covering layer has a central area and covers this T connector fully with predetermined thickness, one left and right end is decreased to the two opposite side end surfaces that the mode identical with this framework two opposite side end external diameters is coated on this framework respectively outward gradually with thickness from this left and right sides, central area, and a bottom is decreased to the mode identical with this footstalk upper end external diameter with thickness outward gradually from this central area downside and is coated on this footstalk upper end face.

Below, with full example of some preferable enforcements and conjunction with figs. the utility model is described further now, wherein:

Fig. 1 is the plan view of the utility model preferred embodiment one;

Fig. 2 is the utility model preferred embodiment one cutaway view on the 2-2 direction in Fig. 1;

Fig. 3 is the cutaway view of the utility model preferred embodiment two and Fig. 2 equidirectional;

Fig. 4 is the cutaway view of the utility model preferred embodiment three and Fig. 2 equidirectional.

At first, see also Fig. 1 and Fig. 2, the racket 10 of the utility model preferred embodiment one has annular tube shaped framework 12, one tubulose footstalks 14 and is connected with an end of these framework 12 major axis with its upper end, and a handle 16 is connected in the lower end of this footstalk 14.

This annular tube shaped framework 12 is to be bent by aluminium-alloy pipe to form, and has two relative side 18-18, and in order to finish a closed ring, this tubulose footstalk 14 is made by fibre reinforced plastics (F.R.P).

One T connector 20 is one-body molded by metal or fibre reinforced plastics, its horizontal two side ends respectively has a 22-22 of open tubular portion in order to accommodate two side 18-18 of this framework 12, its vertical side has the upper end 26 of another open tubular portion 24 in order to accommodate this footstalk 14, whereby, this framework 12 is linked together with this footstalk 14.

One outer covering layer 30 is to be formed by many stacked coilings of carbon fiber textile board that contain epoxy resin dipping, it has a central area 32 that has a predetermined thickness, be used for fully covering this T connector 20, one left side, right part 34-34 is decreased to the surface that the mode identical with two side 18-18 external diameters of this framework 12 is coated on this two side 18-18 respectively outward gradually with thickness from these 32 left and right sides, central area, and one bottom 36 be to be reduced to the surface that the mode identical with upper end 26 external diameters of this footstalk 16 is coated on this upper end 26 outward gradually from these central area 32 downsides with thickness, whereby, can make this framework 12 and these footstalk 14 more firm linking together, and the junction of the two will be very smooth-going, and the rank portion that does not have projection produces.

See also Fig. 3 again, its outer covering layer 30 of the racket of the utility model preferred embodiment two ' be molded with high molecular polymer (as the thermoplastic elastic plastics), more and for make this outer covering layer 30 ' each end closely fit in the surface of the upper end 26 of two side 18-18 of framework 12 and footstalk 14, be to coat one respectively to contain the bridge layer 40 that long fibre (as carbon fiber or glass fibre) the textile board coiling that soaks thermosetting resin (as epoxy resin) forms by one at least in the surface, junction of this outer covering layer 30 and this two sides 18-18 and this upper end 26.

See also Fig. 4 again, in the utility model preferred embodiment three, be to make two opposite side end 18-18 of framework 12 have a recessed section 182-182 of ring who extends to its end face respectively, and then make respectively that recessed section 182-182 of this ring embeds in two 22-22 of open tubular portion of this T connector 20, can reduce framework 12 reduces square stance with the volume of these footstalk 14 junctions air drag whereby.

Claims

1, a kind of racket of improvement, it comprises:

One annular tube shaped framework has two opposite side ends in order to finish a closed ring;

One tubulose footstalk; And

One T connector, its horizontal two side ends respectively has an open tubular portion, embeds for relative two sides of this framework, and its vertical side has another open tubular portion, embeds for this footstalk upper end, whereby this framework and this footstalk is linked together;

It is characterized in that:

This racket more includes an outer covering layer, this outer covering layer has a central area and is covered in this T connector fully with predetermined thickness, one left and right end is decreased to the two opposite side end surfaces that the mode identical with this framework two opposite side end external diameters is coated on this framework respectively outward gradually with thickness from this left and right sides, central area, and a bottom is decreased to the upper end face that the mode identical with this footstalk upper end external diameter is coated on this footstalk with thickness outward gradually from this central area downside.

2, the racket of improvement as claimed in claim 1 is characterized in that this outer covering layer is that the stacked coating of long fibre textile board by many impregnation thermosetting resins forms.

3, the racket of improvement as claimed in claim 1 is characterized in that this outer covering layer is molded by high molecular polymer.

4, the racket of improvement as claimed in claim 1 is characterized in that two opposite side ends of this annular frame respectively are provided with one section circular rabbet that extends to its end face, and respectively this circular rabbet is to be accommodated in the open tubular portion of the horizontal two side ends of this T connector.

5, the racket of improvement as claimed in claim 3, the junction that it is characterized in that this outer covering layer and this framework two opposite side ends and this footstalk upper end is coated with a bridge layer respectively, and this bridge layer includes the long fibre textile board of one deck impregnation thermosetting resin at least.