A tennis racket with adjustable length

Abstract

The utility model discloses a tennis racket with adjustable length, belonging to the technical field of tennis rackets. A tennis racket with adjustable length comprises a racket frame with a net line, and also comprises: a handle, which is detachably connected to the bottom of the racket frame, wherein an adjustment rod is fixedly connected to the bottom of the racket frame, a connection hole is provided on the handle, and the adjustment rod can be slidably connected in the connection hole; a locking part, which is used to lock and limit the position of the adjustment rod; the utility model adjusts the position of the adjustment rod, and thus can be used by different groups of people. When used by adults, the adjustment rod can be stretched to change the distance between the handle and the racket frame. When used by students, the adjustment rod can be pushed in, so as to be suitable for people of different ages, so that the tennis racket is more in line with personal needs and habits, improves the comfort and stability of hitting the ball, reduces the number of different types of tennis rackets purchased, and reduces the economic burden.

Description

Technical Field

[0001] The utility model relates to the technical field of tennis rackets, in particular to a tennis racket with adjustable length. Background Art

[0002] Tennis is a beautiful and intense sport. The origin and development of tennis can be summarized in four sentences: it was conceived in France, born in Britain, began to spread and reached its climax in the United States, and is now popular all over the world. It is known as the world's second largest ball sport. Tennis sports such as driving and high-pressure shots require good strength. Therefore, playing tennis can cultivate people's agility, judgment, and reaction sensitivity, and can improve speed, strength, endurance, agility and other qualities. Tennis exercise using a tennis racket has become an increasingly popular way of fitness. A tennis racket consists of a racket head, a racket throat, and a racket handle. It also needs to be used with a tennis string. Tennis players have a wide age range and a large population.

[0003] Different tennis rackets are suitable for different groups of people. The handles of tennis rackets used by adults will be longer, while the handles of tennis rackets used by students will be shorter. However, the length of the handles of existing tennis rackets cannot be adjusted at will. The same tennis racket cannot be used by people of different age groups at the same time. It is also necessary to purchase a large number of different types of tennis rackets, which increases the economic burden. For this reason, we propose a tennis racket with adjustable length. Utility Model Content

[0004] The utility model aims to solve the problem that the tennis racket in the prior art cannot adapt to different groups of people and the length of the racket handle cannot be conveniently adjusted, and proposes a tennis racket with adjustable length.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tennis racket with adjustable length comprises a racket frame with a net line, and also comprises: a handle detachably connected to the bottom of the racket frame, wherein an adjustment rod is fixedly connected to the bottom of the racket frame, a connecting hole is provided on the handle, and the adjustment rod is slidably connected in the connecting hole; and a locking portion for locking and limiting the position of the adjustment rod.

[0007] In order to facilitate limiting the position of the adjusting rod, preferably, the locking portion includes a locking block slidably connected to the handle, the end of the locking block can extend into the connecting hole, and a limiting groove is provided on the adjusting rod, and the locking block cooperates with the limiting groove.

[0008] In order to facilitate the change of the position of the locking block, further, the handle is rotatably connected to a rotating shaft, the end of the rotating shaft is fixedly connected to a gear, the locking block is fixedly connected to a rack, and the rack is meshed with the gear.

[0009] In order to facilitate the rotation or locking of the rotating shaft, preferably, the handle is fixedly connected with an installation box, the installation box is slidably connected with a push block, the push block is fixedly connected with a limiting rod, the top of the rotating shaft is fixedly connected with a knob, the knob is provided with a limiting hole, and the limiting rod can extend into the limiting hole.

[0010] In order to improve the connection effect of the adjusting rod, preferably, the cross-sectional shapes of the adjusting rod and the connecting hole are the same.

[0011] In order to facilitate pushing the push block, preferably, a slide groove is provided on the installation box, and the push block is slidably connected in the slide groove and fits with the inner wall of the slide groove.

[0012] Compared with the prior art, the utility model provides a tennis racket with adjustable length, which has the following beneficial effects:

[0013] 1. The length-adjustable tennis racket can be adjusted by adjusting the position of the adjustment rod, so that it can be used by different groups of people. When used by adults, the adjustment rod can be stretched to change the distance between the handle and the racket frame. When used by students, the adjustment rod can be pushed in, so that it can be used by people of different ages, making the tennis racket more in line with personal needs and habits, improving the comfort and stability of hitting the ball, reducing the number of different types of tennis rackets purchased, and reducing the economic burden;

[0014] 2. The length-adjustable tennis racket can extend the limit rod into the limit hole by pushing the push block, so as to limit the knob and lock the position of the rotating shaft to prevent the rotating shaft from rotating.

[0015] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model adjusts the position of the adjustment rod, so that it can be suitable for different groups of people. When adults use it, the adjustment rod can be stretched to change the distance between the handle and the racket frame. When students use it, the adjustment rod can be pushed in, so that it is suitable for people of different age groups, making the tennis racket more in line with personal needs and habits, improving the comfort and stability of hitting the ball, reducing the number of different types of tennis rackets purchased, and alleviating the economic burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a length-adjustable tennis racket proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a length-adjustable tennis racket mounting box proposed by the utility model;

[0018] Figure 3A schematic diagram of a length-adjustable locking block for a tennis racket proposed by the utility model;

[0019] Figure 4 The utility model is a schematic structural diagram of a length-adjustable tennis racket adjusting rod.

[0020] In the figure: 1, racket frame; 2, adjustment rod; 201, limit slot; 3, handle; 301, connecting hole; 4, knob; 401, limit hole; 402, rotating shaft; 403, gear; 5, installation box; 501, push block; 502, limit rod; 6, rack; 601, locking block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Example:

[0024] Reference Figure 1-Figure 4 A tennis racket with adjustable length includes a racket frame 1 with a wire. This design can improve the racket's stability, ball control performance and hitting feeling, and is helpful to the player's performance. The following are some common features of the racket frame 1 with a wire design. By adding the wire, the stability and rigidity of the frame can be increased, deformation and distortion can be reduced, and the racket can be made more durable, and better ball control performance can be provided, so that the player can more easily control the direction and rotation of the ball, and the accuracy and stability of the hitting can be improved. In addition, in tennis sports, such as driving and high-pressure hitting, good strength qualities are required. Therefore, playing tennis can cultivate people's agility, judgment and reaction sensitivity, and can improve speed, strength, endurance, agility and other qualities. Using a tennis racket to exercise tennis has become an increasingly popular way of fitness.

[0025] Also, please refer to Figure 2 and Figure 3 As shown in FIG. 1 , an adjusting rod 2 is installed at the bottom of the racket frame 1, and a plurality of equidistant limiting grooves 201 are provided on the adjusting rod 2. Figure 4There are five groups shown in the figure for reference only. In addition, a handle 3 is provided to match the racket frame 1. A connecting hole 301 is provided on the handle 3, and the adjusting rod 2 can be slidably connected in the connecting hole 301 for lifting and lowering. When the position of the racket frame 1 needs to be adjusted upward, the position of the handle 3 can be pulled down to stretch and adjust the length of the handle 3. At the same time, conversely, the position of the handle 3 needs to be moved up to shorten and adjust the length of the handle 3.

[0026] Please refer to Figure 3 As shown in the figure, a slidable locking block 601 is also provided in the handle 3, and the end of the locking block 601 can extend into the connecting hole 301, and a rotating shaft 402 is also rotatably connected to the handle 3, and a gear 403 is fixedly connected to the end of the rotating shaft 402, and a rack 6 is fixedly connected to the locking block 601, and then the rack 6 is meshed with the gear 403. When the rotating shaft 402 rotates clockwise, the gear 403 at the end can be driven to rotate clockwise. At this time, the gear 403 will drive the rack 6 to move, so that the locking block 601 is directed toward the connecting hole 301. The locking block 601 is moved in the limiting groove 201 on the adjusting rod 2, and the position of the adjusting rod 2 can be adjusted to be suitable for different groups of people. When adults use it, the adjusting rod 2 can be stretched to change the distance between the handle 3 and the racket frame 1. When students use it, the adjusting rod 2 can be pushed in, so as to be suitable for people of different age groups, making the tennis racket more in line with personal needs and habits, improving the comfort and stability of hitting the ball, reducing the number of different types of tennis rackets purchased, and reducing the economic burden.

[0027] In addition, it needs to be explained that in order to better lock and limit the position of the adjusting rod 2, a mounting box 5 is fixedly connected to the handle 3, a slide groove is also provided on the mounting box 5, and a push block 501 is slidably connected to the slide groove, and a limiting rod 502 is fixedly connected to the push block 501, and the limiting rod 502 extends through the mounting box 5 to the outside. When the push block 501 is pushed, the limiting rod 502 will slide on the mounting box 5, and a knob 4 is fixedly connected to the top of the rotating shaft 402, a limiting hole 401 is provided on the knob 4, and the limiting rod 502 can extend into the limiting hole 401, which is used to limit the knob 4 and lock the position of the rotating shaft 402.

[0028] The working principle is as follows. When the adjusting rod 2 needs to be adjusted, the limiting rod 502 can be taken out from the limiting hole 401 on the knob 4, and then the knob 4 is rotated counterclockwise, so that the knob 4 drives the rotating shaft 402 to rotate counterclockwise, and then the rotating shaft 402 drives the gear 403 to rotate counterclockwise, so that the gear 403 drives the rack 6 to move, and then the locking block 601 is displaced from the connecting hole 301, and then the position of the adjusting rod 2 is adjusted according to the needs, so that the limiting groove 201 and the locking block 601 are in the same position, and then the knob 4 is rotated clockwise to limit the adjusting rod 2, and then the limiting rod 502 is inserted into the limiting hole 401.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tennis racket with adjustable length, comprising a racket frame (1) with a tennis string, characterized in that: Also includes: A handle (3) is detachably connected to the bottom of the racket frame (1). The bottom of the racket frame (1) is fixedly connected with an adjusting rod (2), the handle (3) is provided with a connecting hole (301), and the adjusting rod (2) can be slidably connected in the connecting hole (301); A locking portion, used to lock and limit the position of the adjusting rod (2); The locking portion comprises a locking block (601) slidably connected to the handle (3), the end of the locking block (601) can extend into the connecting hole (301), the adjusting rod (2) is provided with a limiting groove (201), and the locking block (601) cooperates with the limiting groove (201); The handle (3) is rotatably connected to a rotating shaft (402), the end of the rotating shaft (402) is fixedly connected to a gear (403), the locking block (601) is fixedly connected to a rack (6), and the rack (6) is meshed with the gear (403); The handle (3) is fixedly connected to a mounting box (5), the mounting box (5) is slidably connected to a push block (501), the push block (501) is fixedly connected to a limiting rod (502), the top of the rotating shaft (402) is fixedly connected to a knob (4), a limiting hole (401) is provided on the knob (4), and the limiting rod (502) can extend into the limiting hole (401).

2. A tennis racket with adjustable length according to claim 1, characterized in that: The cross-sectional shapes of the adjusting rod (2) and the connecting hole (301) are the same.

3. A length-adjustable tennis racket according to claim 1, characterized in that: The installation box (5) is provided with a slide groove, and the push block (501) is slidably connected in the slide groove and fits with the inner wall of the slide groove.

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