CN109568917B - Self-rotation ball serving device for table tennis training - Google Patents

Abstract

The invention discloses a self-rotating ball serving device for table tennis training. There is an open cavity at the bottom of the serving barrel for communicating with the inside of the power hammer box. The power hammer box and the firing barrel are both cylindrical and perpendicular to each other, and the front side of the firing barrel is an open structure; There are two ball spinners on the front side, so that when the table tennis ball is ejected from the front end of the teeing tube, the side of the ball spinner is rubbed against the table tennis ball, adding a rotating effect to the table tennis ball, improving the effect of training, and because of the spin table It rotates back and forth, and the rotation effect of each table tennis ball will be different. At the same time, the intensity of rotation can be increased or decreased by changing the speed of the variable speed motor. The two ball spinners at different positions can simulate various rotation angles. This ensures that the training is comprehensive.

Description

A self-rotating ball serving device for table tennis training

technical field

The invention relates to sports equipment, in particular to a self-rotating ball serving device for table tennis training.

Background technique

Table tennis is China's national ball. It is a popular ball sport in the world. It is a whole-body sport that strengthens the body, the brain and the heart. The conditions for development are not harsh and the participation is strong, so the popularity is very high. .

Although table tennis is more convenient to carry out, regular training also requires two people to carry out, and when professional training is required, it is necessary to increase strength and habits, and often use a ball machine.

At present, there are many types of ball machines on the market, and most of the table tennis ball service mechanisms currently use the pneumatic impact mode to serve the ball. There are various ways of rotating and arc-shaped movement, and the direction and strength of the rotation are also various, so the current ball machine cannot guarantee the comprehensiveness of training.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-spin ball serving device for table tennis training, so as to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A self-rotating ball serving device for table tennis training, comprising a base, a power hammer box located on the base, a serving cylinder located above the power hammer box and communicated, and a conveying box fixed on the serving cylinder. The bottom is provided with an open cavity for communicating with the inside of the power hammer box. The power hammer box and the ball cylinder are both cylindrical and perpendicular to each other. The front side of the ball cylinder is an open structure, and there are two There are two ball spinners, and the two ball spinners are located on the top surface and the side surface of the ball cylinder respectively. The ball spinner includes a body, and a variable speed motor is fixed in the body. The output end of the variable speed motor is provided with a half bevel gear. There is also a disc drive rod vertically arranged with the output shaft of the variable speed motor. The disc drive rod is rotatably connected to the body and one end of the disc drive rod extends out of the body and is fixed with a ball-spinning disc. The side of the ball-spinning disc is covered with a rubber sleeve. The disk drive rod is sleeved with a first bevel gear and a second bevel gear respectively located on both sides of the half bevel gear, and the half bevel gear is intermittently meshed with the first bevel gear and the second bevel gear.

The inside of the power hammer box is provided with a pulse rotating rod which is coaxially arranged and rotatably connected with it. The pulse rotating rod is connected with the pulse motor located in the base. The power hammer and the pull rod are fixed on the pulse rotating rod. L" shape; a positioning device is provided at the inner bottom of the ball cylinder near the open cavity; the positioning device includes a spring groove opened on the inner bottom surface of the ball cylinder, and a rotating baffle that is rotatably connected to the edge of the groove body is arranged in the spring groove , the bottom of the rotating baffle has a return spring connected to the bottom of the spring groove body, and the top of the rotating baffle is provided with a pull wire extending into the power hammer box and connected to the pull rod, and the upper surface of the rotating baffle is an arc shape.

As a preferred solution of the present invention: the conveying box includes a box body, and a low-speed motor is arranged in the center of the top surface of the box body, the box body is cylindrical, and a rotating shaft is connected to the output end of the low-speed motor, and the rotating shaft The lower end is fixed with an opening plate that is attached to the bottom surface of the box and is slidably connected to the opening plate. The opening plate is provided with a quantitative opening. The top of the serving cylinder is provided with a ball inlet connected to the inside of the box, and the ball inlet is located directly above the positioning device; the quantitative opening It has an inclined platform segment and a cylindrical segment, the inclined platform segment and the cylindrical segment are butted, and the inclined platform segment is located above the cylindrical segment.

Compared with the prior art, the beneficial effect of the present invention is that: the device is provided with two ball spinners on the front side of the serving barrel, so that the side surface of the spinning disk and the table tennis ball are generated when the table tennis ball is ejected from the front end of the ball serving barrel. Friction, adding a rotating effect to the table tennis ball to improve the effect of training, and because the spinning disk rotates back and forth, the rotation effect of each table tennis ball will be different, and it can also be increased or decreased by changing the speed of the variable speed motor. The intensity of rotation, two ball spinners in different positions, can simulate various rotation angles to ensure the comprehensiveness of training;

The inner structure of the conveying box is ingenious, and the table tennis balls are quantitatively fed through the rotating opening plate with quantitative openings, so as to avoid multiple table tennis balls entering the serving cylinder at one time, ensuring the intermittent and continuous effect of the serving, and at the same time passing the balls in the serving barrel. The positioning device is set inside, which not only ensures the stability of the table tennis ball when it falls into the room, but also avoids the blocking of the table tennis ball when it is served under the action of the pull wire, ensuring the continuity of training.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is an enlarged view of the positioning device in the present invention.

3 is a schematic diagram of the internal structure of the ball spinner in the present invention.

FIG. 4 is a schematic diagram of the internal structure of the conveying box in the present invention.

Figure 5 is an isometric view of the split disc of the present invention.

In the picture 1- base, 2- power hammer box, 21- pulse rotating rod, 22- power hammer, 23- draw rod, 3- ball cylinder, 31- open cavity, 32- positioning device, 33- ball entrance, 34- Spring groove, 35-rotating baffle, 36-return spring, 37-pulling wire, 4-ball spinner, 41-variable motor, 42-half bevel gear, 43-ball-spinning disc, 431-rubber sleeve, 44-disc Drive rod, 45-first bevel gear, 46-second bevel gear, 5-conveying box, 51-box, 52-low-speed motor, 53-rotating shaft, 54-opening disc, 55-quantitative opening.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

Please refer to Fig. 1-3, a self-rotating ball serving device for table tennis training, including a base 1, a power hammer box 2 located on the base 1, a serving cylinder 3 located above the power hammer box 2 and communicated, and a fixed The delivery box 5 on the ball cylinder 3 is used to send out a single ball, the power hammer box 2 is used to output power to a single ball in the ball cylinder 3, and the bottom of the ball cylinder 3 is provided with an open cavity 31 for In communication with the power hammer box 2, the power hammer box 2 and the ball cylinder 3 are both cylindrical and perpendicular to each other, the front side of the ball cylinder 3 is an opening structure, and two are provided on the front side of the outer wall of the ball cylinder 3 The ball spinner 4, the two ball spinners 4 are respectively located on the top surface and the side surface of the ball cylinder 3, the ball spinner 4 includes a body, a variable speed motor 41 is fixed in the body, and the output end of the variable speed motor 41 is provided with a half cone The gear 42 is also provided with a disk drive rod 44 vertically arranged with the output shaft of the variable speed motor 41 in the device body. The disk drive rod 44 is rotatably connected with the device body, and one end of the disk drive rod extends out of the device body and is fixed with a rotating ball disk 43, so The side of the ball-spinning disc 43 is covered with a rubber sleeve 431 , and the disc drive rod 44 is sleeved with a first bevel gear 45 and a second bevel gear 46 located on both sides of the half bevel gear 42 . The bevel gear 45 and the second bevel gear 46 are intermittently meshed. When the variable speed motor 41 rotates, the semi-bevel gear 42 and the two bevel gears are intermittently driven, so that the disc drive rod 44 drives the ball-spinning disc 43 to reciprocate, so that when the table tennis ball rotates from When the front end of the serving cylinder 3 is ejected, the side surface of the ball spinner 43 is rubbed against the table tennis ball, which adds a rotating effect to the table tennis ball and improves the training effect. There will be differences, and the rotation intensity can also be increased or decreased by changing the speed of the variable speed motor 41. The two ball spinners 4 in different positions can simulate various rotation angles to ensure the comprehensiveness of the training.

The inside of the power hammer box 2 is provided with a pulse rotating rod 21 which is coaxially arranged and rotatably connected with it. The power hammer 22 and the pull rod 23 are fixed on the pulse rotating rod 21, and the power hammer 22 is in the shape of "L". When the table tennis ball enters the ball cylinder 3, the power hammer is driven by the pulse rotating rod 21. 22 rotates, and the front end of the power hammer 22 impacts the table tennis ball so that the table tennis ball gets an acceleration and then rushes out along the serving cylinder 3; The temporary fixation of the table tennis is convenient for the power hammer 22 to strike it; the positioning device 32 includes a spring groove 34 opened on the inner bottom surface of the ball serving cylinder 3, and a rotary block rotatably connected to the edge of the groove body is provided in the spring groove 34. Plate 35, the bottom of the rotating baffle 35 has a return spring 36 connected to the bottom of the groove body of the spring groove 34, and the top of the rotating baffle 35 is provided with a pull wire 37 that extends into the power hammer box 2 and is connected to the pull rod 23. When the power hammer 22 rotates and is connected to the table tennis ball, the pull rod 23 rotates synchronously and pulls down the rotating baffle 35 through the pull wire 37 to prevent the rotating baffle 35 from blocking the table tennis ball. The position spring 36 lifts the rotating baffle 35 to make it rise, intercepts the table tennis ball entering the next round, keeps the table tennis ball relatively fixed, and avoids the situation that the table tennis ball cannot be in contact with the power hammer due to sliding; specifically, The upper surface of the rotating baffle plate 35 is in an arc shape, which fits better with the surface of the table tennis ball, thereby improving the fixing effect.

Example 2:

Referring to Fig. 4 and Fig. 5, the difference from Embodiment 1 is that, in order to ensure the quantitative single entry of table tennis balls, and to avoid entering multiple table tennis balls at one time in the serving cylinder 3 and affecting the serving effect, the conveying box 5 includes a box body. 51, and a low-speed motor 52 is arranged in the center of the inner top surface of the box body 51, the box body 51 is cylindrical, a rotating shaft 53 is connected to the output end of the low-speed motor 52, and the lower end of the rotating shaft 53 is fixed with the box body. The bottom surface of 51 is attached to and slidably connected to the opening plate 54. The opening plate 54 is provided with a quantitative opening 55. The top of the ball cylinder 3 is provided with a ball inlet 33 connecting the inside of the box 51. The ball inlet 33 is located directly above the positioning device 32. During operation, a plurality of table tennis balls are stored in the box body 51, and the low-speed motor 52 drives the rotating shaft 53 to drive the opening plate 54 to rotate. When the quantitative opening 55 is aligned with the ball inlet 33, the table tennis balls enter and serve along the quantitative opening 55 and the ball inlet 33. Inside the barrel 3, due to the continuous rotation of the low-speed motor 52, after a single table tennis ball enters, the quantitative opening 55 and the ball entrance 33 are staggered to avoid the entry of multiple table tennis balls and ensure the intermittent and continuous effect of serving.

The quantitative opening 55 has an inclined stage section and a cylindrical section. The inclined stage section and the cylindrical section are butted together, and the inclined stage section is located above the cylindrical section. When the table tennis ball enters the cylindrical section from the inclined stage section, a buffer effect is obtained, thereby avoiding vertical drop. The table tennis ball is caught and damaged due to falling too fast.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the appended claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. A self-rotating ball serving device for table tennis training, comprising a base (1), a power hammer box (2) positioned on the base (1), and a serving cylinder positioned above the power hammer box (2) and communicating with each other (3) and a conveying box (5) fixed on the ball cylinder (3), the bottom of the ball cylinder (3) is provided with an open cavity (31) for communicating with the inside of the power hammer box (2). (2) The ball cylinder (3) and the ball cylinder (3) are both cylindrical and perpendicular to each other, and the front side of the ball cylinder (3) is an open structure. The ball device (4), the ball spinner (4) includes a device body, a variable speed motor (41) is fixed in the device body, the output end of the variable speed motor (41) is provided with a semi-bevel gear (42), and inside the device body is also provided There is a disk drive rod (44) vertically arranged with the output shaft of the variable speed motor (41), the disk drive rod (44) is rotatably connected with the device body, and one end of the disk drive rod (44) extends out of the device body and is fixed with a ball-spinning disk (43), The disk drive rod (44) is sleeved with a first bevel gear (45) and a second bevel gear (46) located on both sides of the half bevel gear (42) respectively, and the half bevel gear (42) and the first bevel gear (42). 45), the second bevel gear (46) is intermittently meshed. 2 . The main spinning ball serving device for table tennis training according to claim 1 , wherein the two ball spinners ( 4 ) are respectively located on the top surface and the side surface of the serving cylinder ( 3 ). 3 . 3 . The main spinning ball serving device for table tennis training according to claim 1 , wherein the side surface of the spinning disk ( 43 ) is covered with a rubber cover ( 431 ). 4 . 4. The self-rotating ball serving device for table tennis training according to claim 1, 2 or 3, characterized in that the power hammer box (2) has a pulse rotating device coaxially arranged with it and rotationally connected with it. The rod (21), the pulse rotating rod (21) is connected with the pulse motor located in the base (1) for transmission, and a power hammer (22) and a pull rod (23) are fixed on the pulse rotating rod (21), and the power hammer (22) ) is "L"-shaped; a positioning device (32) is provided at the inner bottom of the ball cylinder (3) near the open cavity (31). 5. The self-rotating ball serving device for table tennis training according to claim 4, wherein the positioning device (32) comprises a spring groove (34) opened on the inner bottom surface of the serving cylinder (3), The spring groove (34) is provided with a rotating baffle (35) rotatably connected to the edge of the groove body, and the bottom of the rotating baffle (35) has a return spring (36) connected to the bottom of the groove body of the spring groove (34), and A pull wire (37) extending into the power hammer box (2) and connected to the pull rod (23) is provided at the top end of the rotating baffle plate (35). 6 . The main spinning ball serving device for table tennis training according to claim 5 , wherein the upper surface of the rotating baffle plate ( 35 ) is in an arc shape. 7 . 7. The self-spin ball serving device for table tennis training according to claim 1, 2 or 3, wherein the conveying box (5) comprises a box (51), and is located in the box (51) A low-speed motor (52) is arranged in the center of the inner top surface, the box body (51) is cylindrical, a rotating shaft (53) is connected to the output end of the low-speed motor (52), and a lower end of the rotating shaft (53) is fixed with a rotating shaft (53). Fitted with the bottom surface of the box body (51) and slidably connected to the opening plate (54), the opening plate (54) is provided with a quantitative opening (55), and the top of the ball cylinder (3) is provided with a connection to the inside of the box body (51). The ball inlet (33) is located directly above the positioning device (32). 8. The self-rotating ball serving device for table tennis training according to claim 7, wherein the quantitative opening (55) has an inclined stage section and a cylindrical section, and the inclined stage section and the cylindrical section are butted, and the inclined stage section and the cylindrical section are butted together. The platform segment is above the cylindrical segment.

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