CN212235923U - A tennis training device - Google Patents

Abstract

The utility model discloses a tennis training device, which comprises a case and a launch tube. A ball case is welded on the top case wall of the case, the upper end of the ball case is funnel-shaped, and a welding place between the case and the ball case is provided with a ball case. A communication port, the cross section of the box body on the side away from the ball box is a quarter circle, an arc opening is opened at the quarter circle of the chassis, and the chassis is located in the front and rear boxes at the arc opening. The walls are all provided with arc grooves, the outer walls on both sides of the launch tube are slidably connected with the arc openings, and two arc blocks are welded on the launch tube. The utility model is provided with a launch tube with an adjustable angle. According to different training requirements, athletes can make the arc plates on both sides of the launch tube slide in the arc groove, so as to adjust the angle of the launch tube to control the height and distance of the ball. In order to simulate different launching situations, the operation is simple and the flexibility is better, which greatly improves the training effect and quality of tennis players.

Description

A tennis training device

technical field

The utility model relates to the field of tennis training facilities, in particular to a tennis training device.

Background technique

Tennis is a ball game, usually played between two singles players or a combination of two, in which players hit a tennis ball with a tennis racket across a net on a tennis court. The origin and development of tennis can be summed up in four sentences: it was conceived in France, born in the United Kingdom, began to popularize and form a climax in the United States, prevailed all over the world, and is known as the second largest ball game in the world.

Tennis needs at least two people to play tennis. If there is only one person, tennis transmitters are used for tennis training. However, the current tennis transmitters have the problem that the launch angle cannot be adjusted, the flexibility is poor, and they are too rigid. A problem with the inability to launch, which affects the tennis training of the players.

Utility model content

The purpose of the utility model is to provide a tennis training device in order to solve the shortcomings existing in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A tennis training device includes a case and a launch tube, a ball case is welded on the top wall of the case, the upper end of the ball case is funnel-shaped, and a communication port is opened at the welding place between the case and the ball case, and the ball case is welded. The cross-section of the box body on the side of the chassis away from the ball box is a quarter circle, the quarter circle of the chassis is provided with an arc opening, and the front and rear box walls of the chassis located at the arc opening are provided with An arc groove, the outer walls on both sides of the launch tube are slidably connected with the arc opening, two arc blocks are welded on the launch tube, and the two arc blocks slide with the two arc grooves on the chassis respectively connected, and a tennis ball launching device is arranged in the chassis.

Preferably, the launching device includes a servo motor, a first rotating shaft is rotatably connected to the side wall of the case away from the launching tube through a bearing, the first rotating shaft passes through the side wall of several times, and the servo motor The outer casing is welded on the outer wall of the chassis, the end of the first rotating shaft outside the chassis is coaxially welded with the output shaft of the servo motor, and the end of the first rotating shaft located in the chassis is coaxially welded with a rotating drum, on the rotating drum A sliding slot is provided, and a horizontal sliding slot is arranged on the bottom of the case just below the drum, a sliding rod is slidably connected in the sliding slot, and the upper end of the sliding rod is slidably connected with the chute on the drum .

Preferably, a rope hole is opened at the bottom of the launch tube, a slide plate is slidably connected to the surrounding inner wall of the launch tube, a spring is provided between the slide plate and the bottom of the launch tube, and the rear side wall of the chassis There is a fixed pulley connected to the upper through the rotation of the pin shaft, and a pull rope is fixedly connected to the center of the lower end face of the slide plate. A corrugated pipe is fixedly connected to the communication port, and one end of the corrugated pipe away from the communication port is connected to and communicated with the launch tube.

Preferably, a second rotating shaft is rotatably connected to the bottom box wall of the ball box through a bearing, the second rotating shaft extends through the top box wall of the casing into the casing, and a first cone is coaxially welded on the first rotating shaft The lower end of the second rotating shaft is coaxially welded with a second bevel gear, the first bevel gear and the second bevel gear mesh with each other, and a stirring plate is welded to the part of the second rotating shaft in the ball box.

Preferably, the chute on the drum is composed of two inclined chute and two smooth grooves, the smooth groove is axially parallel to the first rotating shaft, and the two ends of the smooth groove are respectively connected with the previous inclined chute The lower end of the slanted chute is connected with the upper end of the latter inclined chute, and the one inclined chute and the two smooth slots form a Z-shaped structure.

Preferably, the arc angle of the circular arc groove is 90°, and the model of the servo motor is 80T-M04025.

In the present utility model, compared with the prior art, the present utility model has the advantages of:

1. The utility model is provided with a launch tube with an adjustable angle. According to different training requirements, the athletes make the arc plates on both sides of the launch tube slide in the arc groove, so as to adjust the angle of the launch tube to control the height of the ball and the height of the ball. Distance, to simulate different launch situations, simple operation, better flexibility, greatly improving the training effect and quality of tennis players.

2. The servo motor of the present utility model provides power for the launch and at the same time makes the stirring plate rotate continuously, and the rotating stirring plate stirs the tennis balls in the ball box, preventing the tennis balls from being stuck with each other, and cannot enter the launching tube through the bellows from the communication port. , to avoid the phenomenon of no ball launch.

Description of drawings

FIG. 1 is a cross-sectional view of the internal structure of a tennis training device proposed by the utility model.

FIG. 2 is a schematic diagram of the external structure of a tennis training device proposed by the utility model.

FIG. 3 is an enlarged schematic diagram of part A in FIG. 1 .

In the picture: 1 case, 2 ball box, 3 connection port, 4 arc port, 5 launch tube, 6 arc groove, 7 arc block, 8 slide plate, 9 spring, 10 first shaft, 11 drum, 12 slide Groove, 121 inclined chute, 122 smooth groove, 13 sliding groove, 14 sliding rod, 15 pulling rope, 16 fixed pulley, 17 rope hole, 18 bellows, 19 second shaft, 20 first bevel gear, 21 second cone Gears, 22 Servo Motors, 23 Stirring Plates.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, It is constructed and operated in a particular orientation and therefore should not be construed as a limitation of the present invention.

1-3, a tennis training device includes a case 1 and a launch tube 5, a ball case 2 is welded to the top wall of the case 1, the upper end of the ball case 2 is funnel-shaped, and the welding place between the case 1 and the ball case 2 opens There is a communication port 3, the section of the box body on the side of the case 1 away from the ball box 2 is a quarter circle, and an arc port 4 is opened at the quarter circle of the case 1, and the case 1 is located at the arc port 4. There are arc grooves 6 on the front and rear box walls of the launch tube 5, the outer walls on both sides of the launch tube 5 are slidably connected with the arc opening 4, and two arc blocks 7 are welded on the launch tube 5, and the two arc blocks 7 are respectively connected with the chassis. The two arc grooves 6 on 1 are slidably connected, the arc block 7 and the arc groove 6 have friction with each other, and the tennis ball will not rotate the launch tube 5, and the case 1 is provided with a tennis ball launching device.

The launching device includes a servo motor 22. A first shaft 10 is rotatably connected to the side wall of the case 1 away from the launch tube 5 through a bearing. The first shaft 10 runs through the side wall several times. On the outer wall of the casing 1, one end of the first rotating shaft 10 located outside the case 1 is coaxially welded with the output shaft of the servo motor 22, and one end of the first rotating shaft 10 located in the casing 1 is coaxially welded with a rotating drum 11, and the rotating drum 11 is provided with a sliding Slot 12, there is a horizontal sliding slot 13 on the bottom of the chassis 1 just below the drum 11, a sliding rod 14 is slidably connected in the sliding slot 13, and the upper end of the sliding rod 14 is slidably connected with the chute 12 on the drum 11 , the chute 12 on the drum 11 is composed of two oblique chute 121 and two smooth grooves 122, the smooth groove 122 is axially parallel to the first rotating shaft 10, and the two ends of the smooth groove 122 are respectively connected with the previous inclined chute 121. The lower end of the slanted chute 121 is connected with the upper end of the latter inclined chute 121, and one inclined chute 121 and two smooth grooves 122 form a Z-shaped structure.

A rope hole 17 is opened at the bottom of the launch tube 5, a slide plate 8 is slidably connected to the surrounding inner wall of the launch tube 5, a spring 9 is arranged between the slide plate 8 and the bottom of the launch tube 5, and a pin is passed on the rear side wall of the case 1. A fixed pulley 16 is connected to the shaft in rotation, and a pulling rope 15 is fixedly connected to the center of the lower end face of the sliding plate 8. The end of the pulling rope 15 away from the sliding plate 8 passes through the rope hole 17 and the fixed pulley 16 in turn, and is finally fixedly connected with the sliding rod 14. A corrugated pipe 18 is fixedly connected to the communication port 3, and one end of the corrugated pipe 18 away from the communication port 3 is connected to and communicated with the launch tube 5.

A second rotating shaft 19 is rotatably connected to the bottom box wall of the ball box 2 through a bearing. The second rotating shaft 19 extends through the top box wall of the casing 1 and extends into the casing 1. The first rotating shaft 10 is coaxially welded with a first bevel gear 20. A second bevel gear 21 is coaxially welded to the lower end of the second rotating shaft 19, the first bevel gear 20 and the second bevel gear 21 are meshed with each other, and a stirring plate 23 is welded to the part of the second rotating shaft 19 located in the ball box 2. The stirring plate 23 Agitating the tennis balls in the ball box 2, avoiding the problem of multiple dead tennis balls, and also pushing the tennis balls in the ball box 2 away from the communication port 3 into the bellows 18, the arc angle of the arc groove 6 is 90° , the model of the servo motor 22 is 80T-M04025.

In the present utility model, the device is moved into the court. According to different training requirements, athletes adjust the angle of the launch tube 5 to control the height and distance of the ball. After the tennis ball being trained is placed in the ball box 2, the servo motor 22 is turned on. To make it work, the rotating stirring plate 23 continuously stirs the tennis balls in the ball box 2 to prevent the tennis balls from being stuck with each other, and cannot enter the launch tube 5 from the communication port 3 through the bellows 18. The first rotating shaft 10 drives the rotating drum 11 to rotate. , the sliding rod 14 slides back and forth in the sliding groove 13 along with the rotation of the rotating drum 11 . When the sliding rod 14 slides in the inclined sliding groove 121 , the sliding rod 14 slides slowly, and at this time, pull the sliding plate 8 to the spring 9 . Compression, when the slide bar 14 slides from the inclined chute 121 into the smooth slot 122, the slide bar 14 slides to the left rapidly due to unrestricted sliding, and the spring 9 loses the elastic force generated by the compression to push the tennis ball on the slide plate 8 out of the launch tube 5. launch out.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. A tennis training device, comprising a case (1) and a launch tube (5), characterized in that a ball case (2) is welded to the top wall of the case (1), and the ball case (2) The upper end is in the shape of a funnel, a communication port (3) is provided at the welding place of the case (1) and the ball case (2), and the cross section of the case on the side of the case (1) away from the ball case (2) is a quarter A circle, a circular arc opening (4) is provided at the quarter circle of the chassis (1), and circular arcs are provided on the front and rear walls of the chassis (1) located at the circular arc opening (4). A groove (6), the outer walls on both sides of the launch tube (5) are slidably connected with the arc opening (4), and two arc-shaped blocks (7) are welded on the launch tube (5). The shaped blocks (7) are respectively slidably connected with the two arc grooves (6) on the case (1), and the case (1) is provided with a tennis ball launching device. 2. A tennis training device according to claim 1, characterized in that the launching device comprises a servo motor (22), and a bearing is passed on the side wall of the chassis (1) away from the launching tube (5) side A first rotating shaft (10) is rotatably connected, and the first rotating shaft (10) runs through the side wall of several times. The outer casing of the servo motor (22) is welded on the outer wall of the chassis (1). (10) One end outside the case (1) is coaxially welded with the output shaft of the servo motor (22), and the end of the first rotating shaft (10) inside the case (1) is coaxially welded with a rotating drum (11), The rotating drum (11) is provided with a chute (12), and a horizontal sliding groove (13) is provided on the bottom of the chassis (1) directly below the rotating drum (11). The sliding groove (13) A sliding rod (14) is slidably connected inside, and the upper end of the sliding rod (14) is slidably connected with the sliding groove (12) on the rotating drum (11). 3. A kind of tennis training device according to claim 2, is characterized in that, the bottom of described launch tube (5) is provided with a rope hole (17), and the surrounding inner wall of described launch tube (5) is slidably connected with A sliding plate (8), a spring (9) is arranged between the sliding plate (8) and the bottom of the launch tube (5), and a fixed pulley is connected to the rear side wall of the chassis (1) through a pin shaft. (16), a pull rope (15) is fixedly connected to the center of the lower end surface of the slide plate (8), and the end of the pull rope (15) away from the slide plate (8) passes through the rope hole (17) and the fixed pulley ( 16), and finally fixedly connected with the sliding rod (14), a corrugated pipe (18) is fixedly connected at the communication port (3), and the end of the corrugated pipe (18) away from the communication port (3) is connected to the launch tube (16). 5) Connect and communicate. 4. A tennis training device according to claim 2, characterized in that a second shaft (19) is rotatably connected to the bottom wall of the ball box (2) through a bearing, and the second shaft (19) ) extends through the top wall of the case (1) into the case (1), a first bevel gear (20) is coaxially welded on the first shaft (10), and the lower end of the second shaft (19) is the same as the The shaft is welded with a second bevel gear (21), the first bevel gear (20) and the second bevel gear (21) are meshed with each other, and a piece of the second shaft (19) located in the ball box (2) is welded with a piece Agitator plate (23). 5. A tennis training device according to claim 2, wherein the chute (12) on the rotating drum (11) consists of two inclined chute (121) and two smooth grooves (122) The smooth groove (122) is axially parallel to the first shaft (10), and the two ends of the smooth groove (122) are respectively connected with the lower end of the previous oblique chute (121) and the latter oblique chute (121). ) are connected and communicated, and the one inclined chute (121) and the two smooth grooves (122) form a Z-shaped structure. 6 . The tennis training device according to claim 2 , wherein the arc angle of the arc groove ( 6 ) is 90°, and the model of the servo motor ( 22 ) is 80T-M04025. 7 .

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