JP3221292U - Tennis racket with packing material - Google Patents

Abstract

[PROBLEMS] To provide a tennis racket in which a filling material is disposed, which is excellent in vibration absorbing effect and in which structural strength is enhanced. A tennis racquet includes a pipe member and an arch portion. The pipe member has a first pipe 11 and a second pipe 12. The first tube and the second tube have grips 111 and 121, necks 112 and 122, and frames 113 and 123, respectively. The pipe member further has two spacers inside. Two spacers divide the interior of the pipe member into first, second and central chambers. The first and second chambers are filled with a filling material. The arch portion is a solid structure without a cavity and connects the two frame portions of the pipe member. The grips are spaced apart from each other and integrally connected by the band-like connecting member 18. The structural strength of the entire racket can be effectively enhanced, and the vibration absorbing effect can be achieved by the filler. [Selected figure] Figure 3

Description

  The present invention relates to a tennis racquet designated as International Classification A 63 B 49/00, and more particularly to a tennis racquet having a filling material arranged therein.

  At present, the head of the frame of a tennis racquet manufactured in a hollow annular shape to reduce the weight of a tennis racquet employing a fiber reinforcement has a problem that the structure is relatively weak for a long time. The head of the frame may be damaged by impact, especially when playing by swinging a tennis racket. On the other hand, the tension used when putting on the gut is very high in strength, that is, a pound. In particular, the strength of the tension required by the tennis player tends to increase, so the strength of the tensile strength of the frame head is further increased, so that not only deformation tends to occur, but also the strength of the tennis racket is insufficient. The problem is even more pronounced.

  The main object of the present invention is to provide a tennis racket capable of strengthening its structural strength.

  In order to solve the problems described above, the tennis racquet in which the filling material is disposed has a hypothetical center axis and comprises a pipe member and an arch portion. The pipe members are integrally connected and have a first pipe and a second pipe located on both sides of the middle axis. The first tube has a first grip, a first neck and a first frame. One end of the first neck portion is connected to the first grip portion, and one end is connected to the first frame portion. The second tube has a second grip, a second neck and a second frame. One end of the second neck portion is connected to the second grip portion, and one end is connected to the second frame portion. The first grip and the second grip extend linearly along the central axis and are connected to each other. One end of the first frame opposite to the first grip is connected to one end of the second frame opposite to the second grip. The arch portion is a solid structure without a cavity, and one end is connected to the first frame portion and the one end is connected to the second frame portion. The pipe member further has an outer wall surface, an inner wall surface, and a first spacer and a second spacer formed inside. The first spacer and the second spacer are connected at one end to the outer wall and one end is connected to the inner wall to divide the interior of the pipe member into the central chamber, the first chamber and the second chamber. The first chamber and the second chamber are located on opposite sides of the central chamber and are filled with a filling material.

  Due to the structural features described above, the entire pipe member is integrally manufactured to enhance the structural strength of the entire tennis racket. The first frame and the second frame are able to withstand high tension gut because the first spacer and the second spacer are simultaneously connected to the outer wall surface and the inner wall surface of the pipe member to strengthen the overall structure of the pipe member .

  The tennis racket further comprises a band-like connecting member. The first grip portion and the second grip portion are spaced apart from each other to form a gap, and are connected and integrated by a band connecting member. The clearance makes it possible to cover the handle sleeve on the first grip and the second grip.

  The band-like connecting member is a stepped structure and has a first portion and a second portion. The first portion is disposed near the first neck and the second neck. The second portion is disposed apart from the first neck portion and the second neck portion, and a portion thereof is connected to the inner wall surface of the first grip portion and the second grip portion. The handle sleeve can be tightly covered on the first grip and the second grip by means of the band-shaped connecting member having the step-like structure described above.

  The first portion of the band-shaped connecting member is arranged to be aligned with the surfaces of the first neck portion and the second neck portion.

  Since the inner wall surface of the first grip portion is connected to the inner wall surface of the second grip portion, the handle sleeve can be similarly covered on the first grip portion and the second grip portion.

  The detailed structure, features, assembly or use of the tennis racket according to the present invention will be clarified through the detailed description of the following embodiments. In addition, the following detailed description and the embodiments presented by the present invention are merely examples for explaining the present invention, and it is not possible to limit the claims of the present invention if there is common sense in the field related to the present invention. It should be understandable.

1 is a perspective view of a tennis racket according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view showing a part of a tennis racket according to a first embodiment of the present invention. FIG. 1 is a plan view showing a state in which a handle sleeve of a tennis racket according to a first embodiment of the present invention is removed. It is sectional drawing along line 4-4 in FIG. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 3; FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 3; FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 3; It is a cross-sectional view which shows the 1st grip part and 2nd grip part of the tennis racket by 2nd Embodiment of this invention.

  Hereinafter, a tennis racket according to the present invention will be described based on the drawings.

First Embodiment
As shown in FIGS. 1 to 3, the tennis racket 1 according to the first embodiment of the present invention comprises a pipe member 10, an arch portion 20 and a handle sleeve 30. The tennis racket 1 has an imaginary central axis A, and the entire structure is symmetrical about the central axis A. The following directional term "inward" is then to be close to the central axis A for the convenience of explanation. The directional term "out" is to move away from the central axis A.

  The pipe member 10 is made of fiber reinforced resin. The fibers are carbon fibers, boron fibers, glass fibers or aromatic polyamide resins (trademark registered with KEVLAR). The resin is a thermoplastic resin or a thermosetting resin. The pipe member 10 has a first pipe body 11 and a second pipe body 12 integrated with each other. The first pipe body 11 and the second pipe body 12 are located on both sides of the center axis line A, and are symmetrical about the center axis line A. As shown in FIG. 3, the first tubular body 11 has a first grip 111, a first neck 112 and a first frame 113. One end of the first neck portion 112 is connected to the first grip portion 111, and one end is connected to the first frame portion 113. The second tube 12 has a second grip 121, a second neck 122 and a second frame 123. One end of the second neck portion 122 is connected to the second grip portion 121, and one end is connected to the second frame portion 123. One end of the first frame portion 113 opposite to the first grip portion 111 is connected to one end of the second frame portion 123 opposite to the second grip portion 121. According to the structural features described above, the first grip 111, the first neck 112, the first frame 113, the second frame 123, the second neck 122, and the second grip 121 are connected to have a hollow shape. The inside is connected with each other. The first frame portion 113 and the second frame portion 123 have a plurality of gut storage grooves (not shown in the drawing). A hitting face (not shown in the drawing) can be configured by stretching the first frame portion 113 and the second frame portion 123. As shown in FIGS. 3, 6 and 7, the first grip portion 111 and the second grip portion 121 extend linearly along the center axis A and are arranged to be spaced apart from each other. The first grip portion 111 and the second grip portion 121 are connected by the band-like connecting member 18 and integrated. The belt-like connecting member 18 is a step-like structure, and has a first portion 181 and a second portion 182. The first portion 181 is disposed near the first neck portion 112 and the second neck portion 122, and is disposed such that the surfaces are aligned with the outer wall surfaces of the first neck portion 112 and the second neck portion 122. The second portion 182 is disposed apart from the first neck portion 112 and the second neck portion 122, and a portion thereof is connected to the inner wall surface B (see FIG. 7) of the first grip portion 111 and the second grip portion 121. A gap d is formed between the first grip portion 111 and the second grip portion 121.

  As shown in FIGS. 4 to 7, the pipe member 10 further has a first spacer 13 and a second spacer 14 inside. The first spacer 13 and the second spacer 14 are separately connected to the outer wall surface E and the inner wall surface B of the pipe member 10 at both ends, whereby the interior of the pipe member 10 is formed into the first chamber 15, the second chamber 16 and the central chamber Divide 17 The first chamber 15 and the second chamber 16 are located on opposite sides of the central chamber 17. As shown in FIG. 4, in the second frame portion 123, the first spacer 13 and the second spacer 14 are connected to the inner wall surface B and the outer wall surface E of the second frame portion 123. The first frame portion 113 and the second frame portion 123 are similar in internal structure. As shown in FIG. 5, in the first neck portion 112, the inner first spacer 13 and the second spacer 14 are connected to the inner wall surface B and the outer wall surface E of the first neck portion 112. In the second neck portion 122, the inner first spacer 13 and the second spacer 14 are connected to the inner wall surface B and the outer wall surface E of the second neck portion 122. As shown in FIGS. 6 and 7, the first spacer 13 and the second spacer 14 inside the first grip portion 111 are connected to the inner wall surface B and the outer wall surface E of the first grip portion 111. In the second grip portion 121, the inner first spacer 13 and the second spacer 14 are connected to the inner wall surface B and the outer wall surface E of the second grip portion 121. The first spacer 13 and the second spacer 14 are responsible for strengthening the structural strength. In particular, the first spacer 13 and the second spacer 14 are spaced apart from each other to be disposed inside the pipe member 10 to enhance the overall structural strength of the tennis racket 1. Therefore, when the first frame portion 113 and the second frame portion are stretched, the first frame portion 113 and the second frame portion 123 can endure relatively large tensile strength, and torsional deformation hardly occurs. When the ball is hit, the first frame portion 113 and the second frame portion 123 can disperse the instantaneously increased impact force and improve the stability of the ball.

  In the first grip portion 111, the first neck portion 112, the first frame portion 113, the second frame portion 123, the second neck portion 122 and the second grip portion 121, the first chamber 15 and the second chamber 16 inside are filling materials Filled with 40 If the filler 40 is made of expanded polystyrene, the vibration absorbing effect and the structural strengthening effect can be achieved. In the present embodiment, the filler 40 is made of PU, but is not limited thereto and may be made of EVA resin. Since the EVA resin has a good vibration absorbing effect, the impact force generated when striking a ball can be effectively reduced.

  In the present embodiment, since the filler 40 is filled in the first chamber 15 and the second chamber 16, moisture permeates the central chamber 17 when the tennis racket 1 is used in a wet or humid environment. Even in this case, the weight of the tennis racket 1 is not increased because it is difficult for the packing material 40 in the first chamber 15 and the second chamber 16 to be adsorbed and discharged. Therefore, the entire tennis racket 1 has a vibration absorbing effect and a waterproof effect. The above-described structural features have revealed that the entire tennis racket 1 not only has high strength but also has a vibration absorbing effect and a water absorbing effect.

  As shown in FIG. 3, the arch portion 20 is a solid structure without a cavity, one end thereof is connected to the first frame portion 113, and one end thereof is connected to the second frame portion 123. The face of the tennis racket 1 is constituted by a first frame portion 113, a second frame portion 123 and an arch portion 20.

  As shown in FIG. 2, the handle sleeve 30 secures a portion to be gripped when playing, has a hollow shape, and has a slight convex rib 31 inside. The convex rib 31 and the gap d correspond to each other. The handle sleeve 30 is covered by the convex rib 31 on the first grip portion 111 and the second grip portion 121.

  The present embodiment is not limited to the above, and the length, thickness, and arrangement position of the first spacer 13 and the second spacer 14 can be changed according to the actual situation.

Second Embodiment
FIG. 8 is a cross-sectional view showing a tennis racket 1 according to a second embodiment of the present invention. The differences between the second embodiment and the first embodiment are as follows. In the second embodiment, since the inner wall surface B of the first grip portion 111 is connected to the inner wall surface B of the second grip portion 121, there is no gap between the first grip portion 111 and the second grip portion 121.

  As mentioned above, this invention is not limited to the said embodiment at all, It can implement with a various form in the range which does not deviate from the meaning of an invention.

1: tennis racket,
10: pipe member,
11: First tube,
111: First hand grip,
112: The first neck,
113: 1st frame part,
12: second tube body,
121: Second hand grip,
122: The second neck,
123: Second frame part,
13: First spacer,
14: Second spacer,
15: first chamber,
16: second chamber,
17: Central chamber,
18: band-shaped connecting member,
181: First part,
182: second part,
20: Arch,
30: Handle sleeve,
31: convex rib,
40: Filler,
A: Central axis,
B: Inner wall surface,
E: Outer wall surface,
d: Gap

Claims (6)

Has a hypothetical center axis, and comprises a pipe member and an arch,
The pipe member is integrally connected and has a first pipe and a second pipe located on both sides of the center axis, the first pipe having a first grip, a first neck and a first frame. The first neck portion is connected to the first grip portion at one end, and is connected to the first frame portion at one end, and the second tube is configured to have a second grip portion, a second neck portion and a second It has a frame, one end of the second neck is connected to the second grip, one end is connected to the second frame, and the first and second grips are connected to the center axis. The first frame portion is linearly extended along and connected to each other, and the first frame portion has one end opposite to the first grip portion connected to one end of the second frame portion opposite to the second grip portion,
One end of the arch portion is connected to the first frame portion, and one end is connected to the second frame portion.
The pipe member further has an outer wall surface, an inner wall surface, and a first spacer and a second spacer formed in the inside, one end of the first spacer and the second spacer being connected to the outer wall surface, and one end thereof The interior of the pipe member is divided into a central chamber, a first chamber and a second chamber by being connected to an inner wall surface, and the first chamber and the second chamber are located on opposite sides of the central chamber and filled A tennis racquet having a filler, wherein the filler is filled with a material.   The tennis racquet according to claim 1, wherein the arch portion is a solid structure without a cavity. Furthermore, it has a band-like connecting member,
The first grip portion and the second grip portion are disposed to be spaced apart from each other, and are connected and integrated by the band-like connecting member, so that a gap is formed between the first grip portion and the second grip portion. A tennis racquet as claimed in claim 1, characterized in that it is formed.   The belt-like connecting member is a step structure and has a first portion and a second portion, the first portion is disposed near the first neck portion and the second neck portion, and the second portion is the step-like structure. The filler according to claim 3, wherein the filler is disposed apart from the first neck portion and the second neck portion, and a portion is connected to the inner wall surface of the first grip portion and the second grip portion. The tennis racket that has been placed.   The filler according to claim 4, wherein the first portion of the band-like connecting member is arranged to be aligned with the surfaces of the first neck portion and the second neck portion. tennis racket.   The tennis racquet according to claim 1, wherein the inner wall surface of the first grip portion is connected to the inner wall surface of the second grip portion.

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