A table tennis ball distribution and delivery mechanism

Abstract

This invention belongs to the field of sports training equipment and discloses a ping-pong ball distribution and delivery mechanism, which makes the ball distribution and delivery smooth and thus greatly improves the user experience. It includes a ball delivery channel and a ball delivery crank. The ball delivery channel extends vertically downwards or inclined downwards, and the passage area of ​​the ball delivery channel is larger than the large circle of the training ping-pong ball. The ball delivery crank is vertically rotatable relative to the ball delivery channel. Two ball-blocking protrusions are formed on the ball delivery crank. Both ball-blocking protrusions extend horizontally and are located inside the ball delivery channel. The plane containing the extension axis of the two ball-blocking protrusions is inclined relative to the extension direction of the ball delivery channel, and the vertical spacing of the two ball-blocking protrusions matches the diameter of the training ping-pong ball. The maximum distance between the edges of the two ball-blocking protrusions and the inner wall of the ball delivery channel is respectively used as the first ball-passing distance and the second ball-passing distance. The first ball-passing distance and the second ball-passing distance are respectively greater than and less than the diameter of the training ping-pong ball.

Description

Technical Field

[0001] This invention belongs to the field of sports training equipment, specifically relating to a ball distribution and delivery mechanism for table tennis. Background Technology

[0002] A table tennis serving device is a sports training instrument that can hold multiple training table tennis balls and hit them out in sequence to simulate a player's serve. It is also a device used by the public for exercise and entertainment. As my country is a major table tennis country, the enthusiasm of the general public for participating in table tennis is very high. Therefore, table tennis serving devices have a very broad application prospect in my country, and the table tennis ball distribution and delivery mechanism is one of the key components of a table tennis serving device.

[0003] Currently, the ping-pong ball distribution and delivery mechanism uses a suction method to pick up multiple training ping-pong balls from bottom to top, then distributes the training ping-pong balls one by one through a rotating turntable and throws them out through high-speed rollers, thus realizing the function of distributing and delivering ping-pong balls.

[0004] However, during use, the following shortcomings were found in the above implementation: multiple training ping-pong balls are prone to getting stuck when being distributed and transported by the rotating turntable, which also makes it difficult to distribute and transport the balls smoothly, thus affecting the user's swing rhythm and greatly reducing the user's experience. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a ping-pong ball distribution and delivery mechanism. By replacing the rotating turntable for ball distribution and delivery with a simple mechanism, it avoids ball jamming during the distribution and delivery process, while also ensuring smooth ball distribution and delivery, thereby greatly improving the user experience.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A ping-pong ball feeding mechanism, which simultaneously receives multiple training ping-pong balls from the outside, is characterized by comprising: a feeding channel and a feeding crank. The feeding channel extends vertically downward or inclined downward. Multiple training ping-pong balls enter from the upper end of the feeding channel, and the passing area of ​​the feeding channel is larger than the large circle of the training ping-pong ball. The feeding crank is vertically rotatable relative to the feeding channel. Two ball-blocking protrusions are formed on the feeding crank. Both ball-blocking protrusions extend horizontally and are located inside the feeding channel. The plane containing the extension axis of the two ball-blocking protrusions is inclined relative to the extension direction of the feeding channel. The vertical spacing between the two ball-blocking protrusions matches the diameter of the training ping-pong ball. The maximum distance between the edges of the two ball-blocking protrusions and the inner wall of the feeding channel is respectively used as the first ball-passing distance and the second ball-passing distance. The first ball-passing distance and the second ball-passing distance are respectively greater than and less than the diameter of the training ping-pong ball.

[0008] Preferably, the present invention further includes a ball-distributing motor and a ball-distributing crank. The ball-feeding channel is formed by two parallel ball-feeding baffles. The output shaft of the ball-distributing motor is parallel to the rotation axis of the ball-feeding crank. The ball-distributing crank is mounted on the output shaft of the ball-distributing motor. The ball-feeding crank is flat and is located in the same vertical plane as the ball-feeding crank. This plane is used as the linkage plane. The minimum distance between the output shaft of the ball-distributing motor and the edge of the ball-feeding crank in the linkage plane is less than the extension length of the ball-distributing crank in the linkage plane.

[0009] Furthermore, the present invention also includes a shielding structure, which and the ball feed crank are located on both sides of the two ball feed partitions, thereby forming a closure of both sides of the ball feed channel.

[0010] Furthermore, the present invention also includes a ball-receiving component having a ball-receiving surface located directly below the lower end of the ball-feeding channel, the ball-receiving surface being used to receive training ping-pong balls falling from the ball-feeding channel.

[0011] Furthermore, the ball-bearing surface is an inwardly concave arc surface along its own extension direction, and the ball-bearing surface is inclined downward along its own extension direction. The ball-bearing component also has two vertical and parallel ball-blocking rods, which are located at the lower end of the ball-bearing surface, and the distance between the two ball-blocking rods is smaller than the diameter of the training ping-pong ball.

[0012] Furthermore, the ball-dropping channel extends all the way to the ball-receiving surface, and the distance between the shielding structure and the upper end of the ball-blocking rod is smaller than the large circle of the training ping-pong ball.

[0013] Furthermore, the rotation plane of the ball-distributing crank is coplanar with the rotation plane of the ball-feeding crank. During rotation, the free end of the ball-distributing crank has discontinuous periodic interference with the edge of the ball-feeding crank, which causes the ball-feeding crank to be periodically pushed and rotated discontinuously. As a result, when the ball-distributing crank pushes the ball-feeding crank to rotate, the first ball-passing distance and the second ball-passing distance change in opposite directions.

[0014] Preferably, the present invention further includes a ball collecting container and a device base shell, the ball feeding channel and the ball feeding crank are both located inside the device base shell, the bottom surface of the inner cavity of the ball collecting container is inclined downwards, the upper opening of the ball feeding channel is connected to the lowest position of the bottom surface of the inner cavity of the ball collecting container, and the ball collecting container is used to receive multiple training ping-pong balls and drop them into the ball feeding channel.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Because the ping-pong ball feeding mechanism of the present invention includes a feeding channel and a feeding crank, the feeding channel extends vertically downward or inclined downward, and the passing area of ​​the feeding channel is larger than the large circle of the training ping-pong ball, the feeding crank is arranged to be vertically rotatable relative to the feeding channel, and two ball-blocking protrusions are formed on the feeding crank. Both ball-blocking protrusions extend horizontally and are located inside the feeding channel. The plane containing the extension axis of the two ball-blocking protrusions is inclined relative to the extension direction of the feeding channel, and the vertical spacing of the two ball-blocking protrusions matches the diameter of the training ping-pong ball. The maximum distance between the edge of the two ball-blocking protrusions and the inner wall of the feeding channel is respectively taken as the first ball-passing distance and the second ball-passing distance. The first ball-passing distance and the second ball-passing distance are respectively greater than and less than the diameter of the training ping-pong ball. When the first ball-passing distance is greater than the diameter of the training ping-pong ball, the second ball-passing distance is less than the diameter of the training ping-pong ball. At this time, the training ball in the feeding channel... The training ping-pong ball cannot pass through the second ball-passing distance and falls between the vertical gaps of the two ball-blocking protrusions, unable to continue falling. When the second ball-passing distance is greater than the diameter of the training ping-pong ball, and the first ball-passing distance is less than the diameter of the training ping-pong ball, only the training ping-pong ball that falls between the vertical gaps of the two ball-blocking protrusions continues to fall, while another training ping-pong ball immediately above it is blocked by the ball-blocking protrusions and cannot enter the vertical gap between the two ball-blocking protrusions. Thus, due to the spatial constraints of the first ball-passing distance, the second ball-passing distance, and the vertical gaps of the two ball-blocking protrusions, the training ping-pong balls fall smoothly and sequentially through the self-feeding channel. Therefore, this invention replaces the rotating turntable for ball distribution with a simple mechanism, avoiding the phenomenon of ball jamming during ball distribution and ensuring smooth ball distribution, thereby greatly improving the user experience.

[0017] 2. Because the ball-receiving surface of the present invention is an inwardly concave arc surface along its own extension direction, and the ball-receiving surface is inclined downward along its own extension direction, and the ball-receiving component also has a ball-stopping rod located at the lower end of the ball-receiving surface, the training ping-pong ball falling from the ball-feeding channel falls onto the ball-receiving surface and rolls along the inwardly concave arc surface to the ball-stopping rod, where it is stopped by the ball-stopping rod. Therefore, the present invention can stably and reliably stop the training ping-pong ball at the ball-stopping rod, thereby facilitating its hitting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external shape of the ping-pong ball distributing and feeding mechanism according to an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the device base shell according to an embodiment of the present invention. Figure 1 ;

[0020] Figure 3 A schematic diagram of the device base shell according to an embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram illustrating the interaction of the ball feeding channel, ball feeding crank, ball dispensing motor, and ball dispensing crank in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the device base shell and ball bearing component according to an embodiment of the present invention.

[0023] In the diagram: 100, ping-pong ball distribution and delivery mechanism; 10, shell assembly; 11, ball collecting container; 12, ball drop channel; 121, shielding structure; 13, device base shell; T, training ping-pong ball; 21, ball delivery channel; 21a, ball delivery partition; 22, ball delivery crank; 221, ball blocking protrusion; 23, ball distribution motor; 24, ball distribution crank; 32, ball receiving component; 321, ball receiving surface; 322, ball blocking rod; S, firing mechanism. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the ping-pong ball distribution and delivery mechanism of the present invention. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0025] like Figures 1 to 3 As shown, the ping-pong ball dispensing and feeding mechanism 100 in this embodiment simultaneously receives multiple training ping-pong balls T from the outside, including a housing assembly 10, a ball feeding channel 21, a ball feeding crank 22, a ball dispensing motor 23, a ball dispensing crank 24, and a ball receiving component 32.

[0026] The housing assembly 10 includes a ball collecting container 11 and a device base shell 13. The bottom surface of the inner cavity of the ball collecting container 11 is inclined downwards. The upper opening of the ball feeding channel 21 is connected to the lowest position of the bottom surface of the inner cavity of the ball collecting container. The ball collecting container 11 is used to receive multiple training ping-pong balls T and drop them into the ball feeding channel 21. The upper end of the device base shell 13 is connected to the ball collecting container 11. The ball feeding channel 21, the ball feeding crank 22, the ball distributing motor 23, the ball distributing crank 24, and the ball receiving component 32 are all located inside the device base shell 13. Specifically, the housing assembly 10 also includes a ball dropping pipe 12. The ball collecting container 11 is connected to the ball feeding channel 21 through the ball dropping pipe 12.

[0027] like Figure 4 As shown, the ball delivery channel 21 extends vertically downward or inclined downward. Multiple training ping-pong balls T enter from the upper end of the ball delivery channel 21, and the passing area of ​​the ball delivery channel 21 is larger than the large circle of the training ping-pong ball T. The ball delivery channel 21 is formed by two parallel ball delivery partitions 21a. In this embodiment, the ball delivery channel 21 extends in the vertical direction.

[0028] The ball-feeding crank 22 is vertically rotatable relative to the ball-feeding channel 21. The ball-feeding crank 22 is flat, with two ball-blocking protrusions 221 formed on its surface. Both ball-blocking protrusions 221 extend horizontally and are located inside the ball-feeding channel 21. The plane containing the extension axes of the two ball-blocking protrusions 221 is inclined relative to the extension direction of the ball-feeding channel 21, and the vertical spacing of the two ball-blocking protrusions 221 matches the diameter of the training ping-pong ball T. The maximum distance between the edges of the two ball-blocking protrusions 221 and the inner wall of the ball-feeding channel 21 is taken as the first ball-passing distance and the second ball-passing distance, respectively. The first ball-passing distance and the second ball-passing distance are greater than and less than the diameter of the training ping-pong ball T, respectively. Specifically, The ball-feeding crank 22 is adjacent to the two ball-feeding partitions 21a on the same side, thereby closing one end of the ball-feeding channel 21. The ball-blocking protrusion 221 is rod-shaped, and its extension direction is perpendicular to the surface of the ball-feeding crank 22. The ball-blocking protrusion 221 divides the relative distance between the two ball-feeding partitions 21a into two intervals, with the larger interval being the first ball-passing distance and the second ball-passing distance. The rotation amplitude of the ball-feeding crank 22 is controlled by the interaction between the two ball-feeding partitions 21a and the corresponding ball-blocking protrusions 221. The limitation is that when a ball-blocking protrusion 221 stops interfering with the corresponding nearby ball-feeding partition 21a, the rotation limit position on one side of the ball-feeding crank 22 is determined. Therefore, when the ball-feeding crank 22 rotates, the magnitude trends of the first ball-passing distance and the second ball-passing distance change in opposite directions, making the first ball-passing distance and the second ball-passing distance greater than and less than the diameter of the training ping-pong ball T, respectively. Furthermore, the change in the magnitude of the first ball-passing distance and the second ball-passing distance affects the opening of the cross-section of the ball-feeding channel 21 of the training ping-pong ball T. The ball delivery channel 21 is closed and prevented from falling when the first ball-passing distance is greater than the diameter of the training ping-pong ball T and the second ball-passing distance is less than the diameter of the training ping-pong ball T. In this case, the training ping-pong ball T in the ball delivery channel 21 cannot pass the second ball-passing distance and falls between the vertical gaps of the two ball-blocking protrusions 221, preventing it from falling further. When the ball delivery crank 22 rotates in the opposite direction, the second ball-passing distance is greater than the diameter of the training ping-pong ball T, and the first ball-passing distance is less than the diameter of the training ping-pong ball T. At this time, because the first ball-passing distance is less than the diameter of the training ping-pong ball T, the training ping-pong ball T that only falls between the vertical gaps of the two ball-blocking protrusions 221 continues to fall, while the other training ping-pong ball T, which is adjacent to it, is blocked by the upper ball-blocking protrusion 221 and cannot enter between the vertical gaps of the two ball-blocking protrusions 221. Therefore, due to the spatial constraints of the first ball-passing distance, the second ball-passing distance and the vertical gaps of the two ball-blocking protrusions 221, the training ping-pong balls T fall smoothly in sequence through the self-feeding channel 21.

[0029] The shielding structure 121 and the ball-feeding crank 22 are located on both sides of the ball-feeding channel 21, i.e., the two ball-feeding partitions 21a, so that the shielding structure 121 and the ball-feeding crank 22 form a closure on both sides of the ball-feeding channel 21. In this embodiment, the shielding structure 121 is a mesh plate that does not affect the observation of the inside of the ball-feeding pipe 12.

[0030] The ball-distributing motor 23 is located near the ball-feeding crank 22, and the output shaft of the ball-distributing motor 23 is parallel to the rotation axis of the ball-feeding crank 22.

[0031] The ball-distributing crank 24 is mounted on the output shaft of the ball-distributing motor 23. The ball-distributing crank 24 and the ball-feeding crank 22 are located in the same vertical plane, which is taken as the linkage plane. The minimum distance between the output shaft of the ball-distributing motor 23 and the edge of the ball-feeding crank 22 in the linkage plane is less than the extension length of the ball-distributing crank 24 in the linkage plane. That is, the rotation plane of the ball-distributing crank 24 is coplanar with the rotation plane of the ball-feeding crank 22. During rotation, the free end of the ball-distributing crank 24 has discontinuous periodic interference with the edge of the ball-feeding crank 22, thus making the ball-feeding crank 22 discontinuous. The ball is periodically pushed and rotated, so that when the ball-distributing crank 24 pushes the ball-feeding crank 22 to rotate, the first ball-passing distance and the second ball-passing distance change in opposite directions; when the ball-distributing crank 24 does not push the ball-feeding crank 22 to rotate, the ball-feeding crank 22 rotates in the opposite direction due to gravity, so that the first ball-passing distance and the second ball-passing distance change in the opposite direction to the above; so that when the ball-distributing crank 24 rotates one revolution, only one training ping-pong ball T falls into the hitting unit 30 through the ball-feeding channel 21. In this embodiment, the ball-distributing crank 24 is rod-shaped.

[0032] like Figure 5 As shown, the ball-bearing component 32 is disposed on the bottom surface of the device base shell 13, and the ball-bearing component 32 has a ball-bearing surface 321 and a ball-blocking rod 322.

[0033] The ball-receiving surface 321 is located directly below the lower end of the ball delivery channel 21. The ball-receiving surface 321 is used to receive the training ping-pong ball T falling from the ball delivery channel 21, waiting for it to be launched by the subsequent firing mechanism S.

[0034] The ball-bearing surface 321 is an inwardly concave arc surface along its own extension direction, and the ball-bearing surface 321 is inclined downward toward the firing mechanism S along its own extension direction. There are two ball-blocking rods 322, which are vertical and parallel. The ball-blocking rods 322 are located at the lowest part of the ball-bearing surface 321, and the distance between the two ball-blocking rods 322 is less than the diameter of the training ping-pong ball T.

[0035] The ball delivery channel 21 extends all the way to the ball receiving surface 321, and the distance between the lower edge of the blocking structure 121 and the upper end of the ball blocking rod 322 is smaller than the great circle of the training ping-pong ball T, so that the training ping-pong ball T falls onto the ball receiving surface 321 through the ball delivery channel 21 without leaving the ball delivery channel 21 during the process.

[0036] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A ping-pong ball dispensing and delivery mechanism, which simultaneously receives multiple training ping-pong balls from the outside, characterized in that, include: Ball delivery channel and ball delivery crank, The ball delivery channel extends vertically downwards or inclined downwards, and the plurality of training ping-pong balls enter from the upper end of the ball delivery channel, with the passage area of ​​the ball delivery channel being larger than the large circle of the training ping-pong balls. The ball-feeding crank is vertically rotatable relative to the ball-feeding channel. Two ball-blocking protrusions are formed on the ball-feeding crank. Both protrusions extend horizontally and are located inside the ball-feeding channel. The plane containing the extension axes of the two protrusions is inclined relative to the extension direction of the ball-feeding channel. The vertical spacing between the two protrusions matches the diameter of the training ping-pong ball. The maximum distance between the edges of the two protrusions and the inner wall of the ball-feeding channel is defined as the first ball-passing distance and the second ball-passing distance, respectively. The first ball-passing distance and the second ball-passing distance are greater than and less than the diameter of the training ping-pong ball, respectively. The ping-pong ball dispensing and feeding mechanism further includes a ball dispensing motor and a ball dispensing crank, and the ball feeding channel is formed by two parallel ball feeding baffles. The output shaft of the ball-distributing motor is parallel to the rotation axis of the ball-feeding crank, and the ball-distributing crank is mounted on the output shaft of the ball-distributing motor. The ball-feeding crank is flat, and the ball-feeding crank and the ball-distributing crank are located in the same vertical plane. This plane is used as the linkage plane. The minimum distance between the output shaft of the ball-distributing motor and the edge of the ball-feeding crank in the linkage plane is less than the extension length of the ball-distributing crank in the linkage plane.

2. The ping-pong ball distribution and delivery mechanism according to claim 1, characterized in that, Also includes: The shielding structure and the ball-feeding crank are located on both sides of the two ball-feeding partitions, thereby forming a closure of both sides of the ball-feeding channel.

3. The ping-pong ball distribution and delivery mechanism according to claim 2, characterized in that, Also includes: The ball receiving component has a ball-receiving surface located directly below the lower end of the ball delivery channel, the ball-receiving surface being used to receive the training ping-pong ball falling from the ball delivery channel.

4. The ping-pong ball distribution and delivery mechanism according to claim 3, characterized in that: in, The ball-bearing surface is an inwardly concave arc surface along its own extension direction, and the ball-bearing surface is inclined downward along its own extension direction. The ball-bearing component also has two vertical and parallel ball-blocking rods, the ball-blocking rods are located at the lower end of the ball-bearing surface, and the distance between the two ball-blocking rods is smaller than the diameter of the training ping-pong ball.

5. The ping-pong ball distribution and delivery mechanism according to claim 4, characterized in that: in, The ball delivery channel extends all the way to the ball receiving surface, and the distance between the blocking structure and the upper end of the ball blocking rod is smaller than the large circle of the training ping-pong ball.

6. The ping-pong ball distribution and delivery mechanism according to claim 1, characterized in that: in, The rotation plane of the ball-distributing crank is coplanar with the rotation plane of the ball-feeding crank. During rotation, the free end of the ball-distributing crank interferes discontinuously and periodically with the edge of the ball-feeding crank, thereby causing the ball-feeding crank to be periodically pushed and rotated discontinuously. As a result, when the ball-distributing crank pushes the ball-feeding crank to rotate, the first ball-passing distance and the second ball-passing distance change in opposite directions.

7. The ping-pong ball distribution and delivery mechanism according to claim 1, characterized in that, Also includes: The base shell of the sphere collection container and device. Both the ball delivery channel and the ball delivery crank are located inside the base shell of the device. The bottom surface of the inner cavity of the ball collecting container is inclined downwards, and the upper opening of the ball feeding channel is connected to the lowest position of the bottom surface of the inner cavity of the ball collecting container. The ball collecting container is used to receive the multiple training ping-pong balls and drop them into the ball feeding channel.

Images