US20090227403A1

US20090227403A1 - Netting framework of a fiber-made racket

Info

Publication number: US20090227403A1
Application number: US12/042,620
Authority: US
Inventors: Chen-Chung Chang
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-05
Filing date: 2008-03-05
Publication date: 2009-09-10

Abstract

The netting structure of a fiber-made racket comprises a racket frame and several supporting parts. The racket frame is formed with upper and lower racket frames made of the fibrous material, and internal and external penetration netting areas are formed around between the upper and lower racket frames. Several supporting parts are provided in the netting area, a couple of parts adjacent to each other are lengthways stationary in the netting area of racket, and the threads of the racket pass through the couple of supporting parts and cross vertically and horizontally in the racket frame to form a hit area. Thanks to the interval of distance of thread passing between the netting area and the supporting parts, it is easy and fast to pass the threads, reducing the area of net threads contacting with the racket frames to increase the flexibility of hit area at the time of hitting.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to the framework of a racket and particularly to the netting framework of a fiber-made racket.
2. Description of Related Art
With reference to FIG. 1 illustrating the appearance of a conventional racket made of a fibrous material, a racket frame 1 that is made of a fibrous material is placed in a predetermined molding tool, and the molding tool is heated in a manner of air blowing to form the frame by heat curing; after it is formed, highly concentrated piercing drill holes 2 are formed around the racket frame 1, through which net threads correspondingly pass in order, and the threads cross vertically and horizontally inside the racket frame 1 to form a hit area 4 for achievement of the netting. However, the conventional racket netting is achieved necessarily through the quite minute drill holes 2, so it is quite inconvenient and slow to weave with the threads. After the racket frame is all intensively drilled, the intensity of structure of the racket is significantly reduced. Further, with reference to FIG. 2 as a sectional view illustrating the conventional racket made of the fibrous material, it is apparent that the net thread 3 passes through a random portion of the drill hole 2 to contact with the racket frame 1, in which a contact interval A is formed, and it is apparent that two ends of the net thread 4 are limited to the drill hole 3, thereby the flexibility of hit area 4 of the racket when hitting a ball being reduced.
Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above.

SUMMARY OF THE INVENTION

In this invention, the netting structure of a racket made of a fibrous material is provided, comprising a racket frame and a supporting part. The racket frame is integrally formed with upper and lower racket frames that are made of the fibrous material, and internal and external penetration netting areas are integrally formed around between the upper and lower racket frames. Several supporting parts are provided in the netting area, a couple of parts that are adjacent to each other are lengthways stationary in the netting area of racket, and thus the threads of the racket pass through the couple of supporting parts and cross vertically and horizontally in the racket frame to form a hit area. With the netting areas of racket frame and the supporting parts between the areas, it is easy to pass the threads at a higher speed. The net threads pass through the supporting part to reduce the area of contact with the racket frame and thus relatively increase the flexibility of hit area of the racket when hitting a ball.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view of the appearance of the netting structure of a conventional fiber-made racket;

FIG. 2 is a view of the appearance of the netting structure of conventional fiber-made racket;

FIG. 3 is a schematic view illustrating a preferred embodiment of this invention;

FIG. 4 is a schematic view illustrating a net thread passing through a supporting part in the preferred embodiment of this invention;

FIG. 5 is a sectional view of the supporting part integrated with a racket frame in the preferred embodiment of this invention;

FIG. 6 is a sectional view of the supporting part integrated with a racket frame in a second embodiment of this invention;

FIG. 7 is an exploded view of the appearance of a segment of the supporting part in a third embodiment of this invention; and

FIG. 8 is an exploded view of the appearance of part of the structure in a fourth embodiment of this invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed.
With reference to FIG. 3 as a view of the appearance of the netting structure of a fiber-made racket in a preferred embodiment of this invention, the racket comprises a racket frame 10 and several supporting parts 20.
The racket frame 10 is integrally formed with oval upper and lower racket frames 11 and 12 that are made of the fibrous material and stretches downwards separately to two sides to bring to an end and form a grasp portion 13, and internal and external penetration netting areas 14 are integrally formed around between the upper and lower racket frames 11 and 12.
The supporting part 20 may be made of a metal, an aluminum metal or a composite material, or a fibrous material. In the embodiment, a cylindrical rod is made of a fibrous material, of which upper and lower ends that are properly long are separately stationary integrally on annular sides where the upper racket frame 11 is opposite to the lower racket frame 12, and a couple of parts that are arranged adjacent to each other are lengthways stationary in the netting area 14 of racket frame 10, and thus the net threads 30 of the racket pass through the couple of supporting parts 20 and cross vertically and horizontally in the racket frame 10 to form a hit area 31.
With reference to FIG. 4 as a sectional view of a net thread passing through the supporting part in this invention, the supporting part 20 at the middle annular portion gradually shrink towards the center to form a trapezoidal shift lift concave 21 for the net thread 30 surround and pass through the supporting parts 20 adjacent to each other and thus fixed onto the shift limit concave 21. The net thread 30 is kept from the supporting parts 20 at a contact distance B of which a contact area is far smaller than the conventional contact distance A as shown in FIG. 2. Thus, at the time of ball hitting, the flexibility of net thread 30 on the hit area 31 may increase for enhancement of hitting elasticity and power applied by the hit area 31.
With reference to FIG. 5 as a sectional view illustrating the supporting part integrated into the racket frame in this invention, the supporting parts 20 are stationary separately at protruding portions 22 and 23 that are formed at two adequate intervals around the upper and lower ends of the upper and lower racket frame 11 and 12. The protruding portions 22 and 23 may dots or rings. In the embodiment, the protruding portions 22 and 23 are rings so that the supporting parts 20 may be placed in a formed model, and then the protruding portions 231 may be used as a basic level to fix the upper racket frame 11 with the lower racket frame 12 and enhance the intensity of formation.
In order to further make apparent the structural features, applied skill and manners, and expected effects according to this invention, what are applied in this invention are in detail described, and it is thus believed that this invention is thoroughly and concretely apparent, as described below.
The racket frame 10 that is made of the fibrous material is placed in a formed molding tool (not shown), the supporting parts 20 are separately placed in a mold cavity of a predetermined netting area 14 in the formed molding tool (not shown) and are molded, and the fibrous material in the formed molding tool (not shown) is processed in a manner of air blowing. Meanwhile, the molding tool is heated, and thus after the fibrous material is solidified, the upper and lower ends of the supporting part 20 that are properly long are separately stationary on annular sides where the upper racket frame 11 is opposite to the lower racket frame 12, thereby an all-in-one structure being achieved. At the time of thread wearing, a couple of supporting parts 20 that are arranged adjacent to each other are lengthways stationary around in the netting area 14 of racket frame, so the net threads 30 passing through the couple of supporting parts 20 adjacent to each other pass and cross vertically and horizontally in the racket frame 10 to form the hit area 31. Thus, thanks to the interval of distance of thread passing between the netting area 14 and the supporting parts 20, it is smooth to pass the threads.
With reference to FIG. 6 as a sectional view illustrating the supporting part integrated into the racket frame in a second embodiment of this invention, the structure and function is approximately the same as that in the preferred embodiment of this invention, and what is different is in that the supporting part 20 is a cylindrical rod made of the metallic material, of which a middle annular portion that shrinks is formed with an arc-shaped shift limit concave 24. The supporting parts 20 are stationary separately at concave portions 25 and 26 that are formed at two adequate intervals around the upper and lower ends of the upper and lower racket frames 11 and 12. The concave portions 25 and 26 may be dots or rings. In the embodiment, the concave portions 25 and 26 are rings so that the supporting parts 20 may be placed in a formed model, and then the protruding portions 231 may be used as a basic level to fix the upper racket frame 11 with the lower racket frame 12 and enhance the intensity of formation.
With reference to FIG. 7 as a view illustrating the appearance of partial structure where the supporting part is integrated into the racket frame in a third embodiment of this invention, the structure and function is approximately the same as that in the preferred embodiment of this invention, and what is different is in that the supporting part 20 is a cylindrical rod made of a composite material, around which a damper sheath 40 made of a rubber wraps. A lengthwise cut groove 41 is formed axially at a side of the damper sheath 40 and gradually shrinks towards the radial center of annular damper sheath 40 to form an arc-shaped shift limit groove 42 so that the net thread 30 may get into the shift limit groove 42 to be fixed, and thus the damper sheath 40 is tightened to enhance the intensity of support to the hit area 31.
With reference to FIG. 8 illustrating a fourth embodiment of this invention, the structure and function is approximately the same as that in the preferred embodiment of this invention, and what is different is in that an all-in-one ornament strip 50 made of plastics are formed at a top side of the grasp portion 13 opposite to the netting area 14 of the racket frame 10. Several clamping strips 51 are provided at a side of the supporting parts 20 corresponding to the ornament strip 40. The clamping strips 51 are cylindrical sleeve, and a notch 511 is formed corresponding to each of the sides of supporting parts 20 for the clamping strips 51 to wedge the supporting parts 20. The other side of the ornament strip 40 is exposed to an outside of the netting area 14, where an advertisement typeface character or pattern blueprint may be printed.
Here, the features and attainable expected effects of this invention are described again below:

- 1. The racket frame and supporting parts according to this invention may be integrally or separately formed for achievement of the stable structure, and the racket frame is formed with a permeable netting area to reduce the total weight of racket for relative achievement of an better effect of hitting.
- 2. With the intervals of distance that are formed between the netting area of racket and the supporting parts, it is smooth to pass the threads.
- 3. The net thread according to this invention contacts only the supporting parts between the racket frames, which reduces the area of contact with the racket frames to increase the flexibility of hit area at the time of hitting; further, the supporting parts are made of the composite material to damp the vibration.
- 4. The ornament strip is provided in the netting area of the racket frame according to this invention, and the advertisement typeface character or pattern blueprint may be printed on a surface of the ornament strip for achievement of the manner of advertisement.

While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.

Claims

1. A netting structure of a fiber-made racket, comprising:

a racket frame being integrally formed with upper and lower racket frames that are made of the fibrous material and stretching downwards separately to two sides to shrink and form a grasp portion, internal and external penetration netting areas being integrally formed around between the upper and lower racket frames; and

several supporting parts being formed into rods in a predetermined shape, of which upper and lower ends are separately stationary at an annular edge where the upper and lower racket frames are corresponding to each other, in which a couple of parts that are adjacent to each other are lengthways stationary in the netting area of racket frame and thus the net threads of the racket pass through the couple of supporting parts and cross vertically and horizontally in the racket frame to form a hit area.

2. The netting structure of fiber-made racket according to claim 1, wherein the supporting parts are cylindrical rods of which each of the middle annular portions that shrinks is formed with a trapezoidal shift limit concave, and the supporting parts may be made of a fibrous material.

3. The netting structure of fiber-made racket according to claim 1, wherein the supporting parts are cylindrical rods of which each of the middle annular portions that shrinks is formed with an arc-shaped shift limit concave, and the supporting parts may be made of a metallic material.

4. The netting structure of fiber-made racket according to claim 1, wherein the supporting part is the cylindrical rod around which a damper sheath made of a rubber wraps, a lengthwise cut groove is formed axially at a side of the damper sheath and gradually shrinks towards the radial center of annular damper sheath to form a concave shift limit groove, and the supporting part may be made of a composite material.

5. The netting structure of fiber-made racket according to claim 3, wherein at least one protruding portion is formed at the edges around the upper and lower ends of upper and lower frames where the supporting parts are separately stationary.

6. The netting structure of fiber-made racket according to claim 4, wherein at least one protruding portion is formed at the edges around the upper and lower ends of upper and lower frames where the supporting parts are separately stationary.

7. The netting structure of fiber-made racket according to claim 3, wherein at least one concave portion is formed at the edges around the upper and lower ends of upper and lower frames where the supporting parts are separately stationary.

8. The netting structure of fiber-made racket according to claim 4, wherein at least one concave portion is formed at the edges around the upper and lower ends of upper and lower frames where the supporting parts are separately stationary.

9. The netting structure of fiber-made racket according to claim 1, wherein an ornament strip is provided at an outside around the netting area of the racket frame, several clamping strips are provided at a side of the supporting parts corresponding to the ornament strip and are cylindrical sleeves, a notch is formed corresponding to each of the sides of supporting parts, and an advertisement typeface character may be printed at the other side of the ornament strip.