Table tennis ball rotation adjustment device

Abstract

A table tennis rotation adjustment device comprises a goal tube, a serving tube and a rotation adjustment tube, wherein the goal tube is connected to the serving tube, the rotation adjustment tube is detachably connected to the serving tube, a plurality of clamping points are evenly distributed on the serving tube, and a clamping point is provided just above the serving tube, and a clamping slot corresponding to the clamping point is provided on the rotation adjustment tube, and the clamping point can be inserted into any one of the clamping slots. The table tennis rotation adjustment device can send out balls with different rotation angles by using a single friction wheel, and does not require a rotating structure, has a simple structure, is easy to operate, and greatly reduces the cost of the table tennis serving machine.

Description

Technical Field

[0001] The invention belongs to the technical field of table tennis serving machines, and in particular relates to a table tennis rotation regulating device. Background Art

[0002] Table tennis serving machines are essential entertainment and training tools for many stadiums and families of players. It can serve any upward, downward, left, or right spin balls, as well as various mixed side-up and side-down spin balls. A Chinese patent application with patent number 202020319835.4 discloses a table tennis serving machine. In order to enable the table tennis serving machine to serve various rotating balls, two friction wheels are arranged at the ball outlet to form a two-wheel drive structure. Two motors are used to drive friction wheels with different speeds. The table tennis ball is launched out of the machine through friction, and the rotation angle of the launch tube can be changed by the rotating mechanism. The disadvantage of this rotation adjustment device that adjusts the rotation intensity and direction of the ball by the speed difference of the two wheels and the rotation of the ball outlet head is that the structure is complicated and the cost is high. Summary of the invention

[0003] The purpose of the present invention is to provide a table tennis ball rotation adjustment device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a table tennis rotation adjustment device, comprising a goal tube, a serving tube and a rotation adjustment tube, wherein the goal tube is connected with the serving tube, the serving tube is mounted on a bracket, a first mounting platform is provided on the outer side wall of the serving tube, a first opening is provided on the side wall of the serving tube, the first opening and the first mounting platform are arranged on the same side of the serving tube, a first motor is mounted on the first mounting platform, the first motor is connected with a ball-moving rod, the ball-moving rod comprises a lever, and the lever passes through the first opening and extends into the serving tube;

[0005] A second mounting platform is provided on the outer side wall of the rotating adjustment tube, a second opening is provided on the side wall of the rotating adjustment tube, the second opening and the second mounting platform are provided on the same side of the rotating adjustment tube, a second motor is installed on the second mounting platform, the second motor is connected to the friction wheel, and the friction wheel partially extends into the rotating adjustment tube after passing through the second opening;

[0006] The rotating adjustment tube is detachably connected to the serving tube, a plurality of clamping points are evenly distributed on the serving tube, and a clamping point is provided just above the serving tube, and a clamping slot corresponding to the clamping point is provided on the rotating adjustment tube, and the clamping point can be inserted into any one of the clamping slots.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme, an end cover is provided at the end of the serving tube, and the end cover is detachably connected to the serving tube.

[0008] On the basis of the above solution and as a preferred solution of the above solution, a connecting handle is provided on the end cover.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme, the inner diameters of the goal tube, the serving tube and the rotating adjustment tube are equal.

[0010] On the basis of the above solution and as a preferred solution of the above solution, the number of the card points and card slots is 8.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme, the ball-moving rod is in a "cross" shape.

[0012] On the basis of the above solution and as a preferred solution of the above solution, the ball moving rod is located directly below the goal tube.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme, the length of the friction wheel extending into the rotation adjustment tube is 3 mm to 4 mm.

[0014] On the basis of the above solution and as a preferred solution of the above solution, the goal tube and the serving tube are integrally formed.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme, a retaining wall is connected to a side of the bottom of the ball tube away from the ball outlet, and the retaining wall is located inside the ball serving tube.

[0016] The beneficial effects of the present invention are as follows: the table tennis ball rotation adjustment device can send out balls with different rotation angles by using a single friction wheel, does not need a rotating structure, has a simple structure, is easy to operate, and greatly reduces the cost of the table tennis ball serving machine; an end cover is provided at the end of the serving tube, and the end cover is detachably connected to the serving tube, which can prevent the table tennis ball from leaking out of the end on the one hand, and facilitate cleaning of dust in the serving tube after the end cover is removed on the other hand; the number of the clamping points and the clamping slots is 8, so that the table tennis ball rotation adjustment device can send out balls with top spin, back spin, left spin, right spin, left top spin, right top spin, left back spin and right back spin; the ball-moving rod is in a "cross" shape, and each side of the "cross" shape can be used to move the ball, so the frequency of moving the ball can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0020] Figure 3 It is an exploded view of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the goal tube and the serving tube.

[0022] Figure 5 It is a structural schematic diagram of the rotary regulating tube.

[0023] The reference numerals are as follows:

[0024] 1. Goal tube; 11. Baffle wall; 2. Ball serving tube; 21. First mounting platform; 22. First opening; 23. Clamping point; 3. Rotating adjustment tube; 31. Second mounting platform; 32. Second opening; 33. Clamping slot; 4. First motor; 5. Ball lever; 6. Second motor; 7. Friction wheel; 8. End cover; 81. Connecting handle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. 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 cannot be understood as a limitation on the present invention.

[0027] As attached Figure 1 To Attachment Figure 5 As shown, a table tennis rotation adjustment device comprises a goal tube 1, a serving tube 2 and a rotation adjustment tube 3, wherein the goal tube 1 is connected with the serving tube 2, the serving tube 2 is mounted on a bracket, a first mounting platform 21 is provided on the outer wall of the serving tube 2, a first opening 22 is provided on the side wall of the serving tube 2, the first opening 22 and the first mounting platform 21 are arranged on the same side of the serving tube 2, a first motor 4 is mounted on the first mounting platform 21, the first motor 4 is connected with a ball-moving rod 5, the ball-moving rod 5 comprises a lever, the lever passes through the first opening 22 and then extends into the serving tube 2;

[0028] A second mounting platform 31 is provided on the outer side wall of the rotating adjustment tube 3, a second opening 32 is provided on the side wall of the rotating adjustment tube 3, the second opening 32 and the second mounting platform 31 are provided on the same side of the rotating adjustment tube 3, a second motor 6 is installed on the second mounting platform 31, the second motor 6 is connected to a friction wheel 7, and the friction wheel 7 passes through the second opening 32 and partially extends into the rotating adjustment tube 3;

[0029] The rotating adjustment tube 3 is detachably connected to the serving tube 2. A plurality of clamping points 23 are evenly distributed on the serving tube 2, and a clamping point 23 is provided just above the serving tube 2. A clamping slot 33 corresponding to the clamping point 23 is provided on the rotating adjustment tube 3, and the clamping point 23 can be inserted into any one of the clamping slots 33.

[0030] When in use, the ball-pushing rod is driven to rotate by the first motor, and the ball-pushing rod will push the table tennis ball toward the rotating adjustment tube. When the table tennis ball passes through the rotating adjustment tube, it will contact the friction wheel. The friction wheel is driven to rotate by the second motor, and the table tennis ball will rotate in the opposite direction, thereby causing the table tennis ball to rotate. The ball-pushing frequency can be adjusted by controlling the rotation speed of the ball-pushing rod by the first motor, and the rotation strength of the table tennis ball can be controlled by adjusting the rotation speed of the friction wheel by the second motor. When rotation in different directions is required, it is only necessary to pull the rotating adjustment tube outward from the serving tube, and then rotate the rotating adjustment tube to a corresponding position, and then insert the card point into the corresponding card slot. This table tennis ball rotation adjustment device can send out balls with different rotation angles by using a single friction wheel, and does not require a rotating structure. It has a simple structure and is easy to operate, which greatly reduces the cost of the table tennis serving machine.

[0031] An end cover 8 is provided at the end of the serving tube 2, and the end cover 8 is detachably connected to the serving tube 2. A connecting handle 81 is provided on the end cover 8, which is convenient for installing the table tennis rotation adjustment device on the bracket. On the one hand, it can prevent the serving tube from rotating. On the other hand, after removing the end cover, it is convenient to clean the dust in the serving tube.

[0032] The inner diameters of the goal tube 1, the serving tube 2 and the rotating adjustment tube 3 are equal, so that the table tennis ball can pass through these tubes conveniently.

[0033] The number of the clamping points 23 and the clamping slots 33 is 8, which can enable the table tennis rotation adjustment device to send out balls with top spin, back spin, left spin, right spin, left top spin, right top spin, left back spin and right back spin.

[0034] The ball-moving rod 5 is in a cross shape, and each side of the cross shape can be used to move the ball, thereby increasing the frequency of moving the ball.

[0035] The ball-pushing rod 5 is located just below the serving tube 1, which can reduce the length of the serving tube on the one hand, and can push the table tennis ball out of the serving tube by the ball-pushing rod on the other hand.

[0036] The length of the friction wheel 7 extending into the rotating adjustment tube 3 is 3 mm to 4 mm. If the length is less than 3 mm, the contact area between the friction wheel and the table tennis ball is small, and it is not easy to make the table tennis ball rotate strongly. If the length is greater than 4 mm, it is easy to crush the table tennis ball or even make the table tennis ball stuck in the rotating adjustment tube.

[0037] The goal tube 1 and the serving tube 2 are integrally formed, so that the goal tube and the serving tube have a smooth transition at the connection, thereby preventing the table tennis ball from being stuck inside the tube.

[0038] A retaining wall 11 is connected to the bottom of the goal tube 1 at one side away from the ball outlet. The retaining wall 11 is located inside the serving tube 2 and can prevent the table tennis ball from leaking out from the end of the goal tube.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A table tennis rotation adjustment device, characterized in that: The invention comprises a goal tube (1), a serving tube (2) and a rotation adjustment tube (3), wherein the goal tube (1) is connected to the serving tube (2), the serving tube (2) is mounted on a bracket, a first mounting platform (21) is provided on the outer wall of the serving tube (2), a first opening (22) is provided on the side wall of the serving tube (2), the first opening (22) and the first mounting platform (21) are arranged on the same side of the serving tube (2), a first motor (4) is mounted on the first mounting platform (21), the first motor (4) is connected to a ball-moving rod (5), the ball-moving rod (5) comprises a moving rod, and the moving rod passes through the first opening (22) and then extends into the serving tube (2); A second mounting platform (31) is provided on the outer side wall of the rotating adjustment tube (3), a second opening (32) is provided on the side wall of the rotating adjustment tube (3), the second opening (32) and the second mounting platform (31) are arranged on the same side of the rotating adjustment tube (3), a second motor (6) is installed on the second mounting platform (31), the second motor (6) is connected to a friction wheel (7), and the friction wheel (7) passes through the second opening (32) and extends into the rotating adjustment tube (3) at the rear portion; The rotating adjustment tube (3) is detachably connected to the serving tube (2); a plurality of clamping points (23) are evenly distributed on the serving tube (2); a clamping point (23) is provided directly above the serving tube (2); a clamping slot (33) corresponding to the clamping point (23) is provided on the rotating adjustment tube (3); and the clamping point (23) can be inserted into any one of the clamping slots (33).

2. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: An end cover (8) is provided at the end of the serving tube (2), and the end cover (8) is detachably connected to the serving tube (2).

3. A table tennis ball rotation adjustment device as claimed in claim 2, characterized in that: The end cover (8) is provided with a connecting handle (81).

4. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The inner diameters of the goal tube (1), the ball serving tube (2) and the rotation adjustment tube (3) are equal.

5. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The number of the clamping points (23) and the clamping slots (33) is 8.

6. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The ball-moving rod (5) is in a cross shape.

7. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The ball-moving rod (5) is located directly below the ball tube (1).

8. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The length of the friction wheel (7) extending into the rotation adjustment tube (3) is 3 mm to 4 mm.

9. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: The goal tube (1) and the serving tube (2) are integrally formed.

10. A table tennis ball rotation adjustment device as claimed in claim 1, characterized in that: A retaining wall (11) is connected to a side of the bottom of the ball-entering tube (1) away from the ball outlet, and the retaining wall (11) is located inside the ball-entering tube (2).

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