CN204034227U - A kind of tennis training machine with rotatable tennis - Google Patents

Abstract

A tennis trainer with rotatable tennis balls, which relates to the technical field of sports training equipment, a plastic disc is fixedly arranged on the bottom of the front end of the bottom metal bracket, and an inverted T-shaped metal frame is fixedly connected to the middle of the bottom metal bracket by screws, and the inverted T The upper end of the shaped metal frame is plugged with a metal tube through a connecting pin. Two small springs are fixed on the upper end of the metal tube by die-casting. The small springs are fixed together by die-casting a metal sheet. A large spring is sleeved, the upper end of the small spring is fixedly connected with the lower end of the Y-shaped device, and the upper end of the Y-shaped device is connected with a rotatable tennis ball through a metal pin. It has a simple structure, with a rotatable tennis ball on the top. After the ball is hit, it can swing back and forth by means of a spring. By repeatedly hitting the rotatable tennis ball at a relatively fixed position, the muscle memory of the correct swing can be quickly established, and the feeling of hitting the ball can be enhanced. batting level.

Description

A tennis trainer with a rotatable tennis ball

Technical field:

The utility model relates to the technical field of sports training equipment, in particular to a tennis training device with rotatable tennis balls.

Background technique:

Tennis is a sport that is more difficult to learn and master than other sports. Practicing and nailing the correct swing is a fundamental part of getting started and improving tennis.

At present, no matter tennis beginners experience and fix the correct hitting action through the coach feeding the ball, or players who want to further improve tennis improve the hitting action and improve the stability of the hitting through the practice of pulling and hitting the wall. Both of them require players to face an incoming ball whose trajectory is not fixed, and it is difficult to deal with it, especially when the coach's feeding ball cannot be accurately placed or the player who is pulling it is not returning the ball stably. The effect is very limited, and sometimes even causes the deformation of one's own hitting action to have the opposite effect.

At present, there are special training equipment for swinging and hitting the ball on the market, but because all of them are simulated tennis balls, the feel of hitting the ball is different from that of real tennis balls, and the rotation of the ball after hitting the ball cannot be seen.

Utility model content:

The purpose of this utility model is to provide a tennis training device with a rotatable tennis ball, which has a simple structure and a rotatable tennis ball on the top. After the ball is hit, it can swing back and forth by relying on a spring. Tennis, to quickly establish the muscle memory of the correct swing (forehand, backhand, volley), enhance the feel of the ball, and improve the level of the ball.

In order to solve the problems existing in the background technology, the utility model adopts the following technical solutions: it includes a rotatable tennis ball, a metal pin, a Y-shaped device, a plastic sleeve, a large spring, a bottom metal bracket, a plastic disc, and an inverted T-shaped metal Frame, metal sheet, small spring, metal tube, the front bottom of the bottom metal bracket is fixed with a plastic disc, the middle part of the bottom metal bracket is connected with an inverted T-shaped metal frame by screws, and the upper end of the inverted T-shaped metal frame is connected by a connecting pin. A metal tube is plugged in. The upper end of the metal tube is die-casted and fixed with two small springs. The small springs are fixed together by die-casting a metal sheet. The outside of the small spring is connected with a plastic sleeve. The upper end of the Y-shaped device is fixedly connected with the lower end of the Y-shaped device, and the upper end of the Y-shaped device is connected with a rotatable tennis ball through a metal pin.

The middle part of the rotatable tennis ball is provided with a through hole, the two ends of the through hole are equipped with rings, the metal pins are inserted into the through holes, and the two ends of the metal pins pass through the rings and are fixed with the Y-shaped device. This creates spin on the ball when it is hit.

The inverted T-shaped metal frame is uniformly provided with several height adjustment holes, and the lower end of the metal pipe is provided with fixing holes corresponding to the distance between the height adjustment holes, and the height adjustment holes and the fixing holes are inserted through connecting pins. (The metal tube can also be inserted into the inverted T-shaped metal frame, and the screw can be threaded on the inverted T-shaped metal frame, and the height can be adjusted by rotating the screw to move or fix the metal tube.)

The bottom metal bracket is composed of two metal tubes. The front ends of the two metal tubes are fixed with screws to form an acute angle. The front and ends of the two metal tubes are covered with rubber sleeves. The screw holes for fixing the inverted T-shaped metal frame, the bottom metal bracket and the inverted T-shaped metal frame are fixedly connected to form a triangular structure.

The utility model allows students to experience by hitting a ball with a relatively fixed position and a stable rebound track, and improves and fixes the tennis hitting action.

Description of drawings:

Fig. 1 is the structural representation of the utility model,

Fig. 2 is the structural representation of Y-shaped device among the utility model,

Fig. 3 is the connection structure schematic diagram of middle and small spring and metal pipe of the present utility model;

Reference signs: rotatable tennis ball 1, metal pin 2, Y-shaped device 3, plastic sleeve 4, large spring 5, bottom metal bracket 6, plastic disc 7, inverted T-shaped metal frame 8, rubber sleeve 9, ring 10. Metal sheet 11, small spring 12, metal pipe 13, fixing hole 14, height adjustment hole 15.

Detailed ways:

Referring to Fig. 1, this specific embodiment adopts the following technical solutions: it includes a rotatable tennis ball 1, a metal pin 2, a Y-shaped device 3, a plastic sleeve 4, a large spring 5, a bottom metal bracket 6, a plastic disc 7, an inverted T Shaped metal frame 8, metal sheet 11, small spring 12, metal pipe 13, the bottom of the front end of the bottom metal bracket 6 is fixedly provided with a plastic disc 7, and the middle part of the bottom metal bracket 6 is fixedly connected with an inverted T-shaped metal frame 8 by screws. The upper end of the inverted T-shaped metal frame 8 is inserted with a metal pipe 13 through a connecting pin, and the upper end of the metal pipe 13 is die-casted and fixed with two small springs 12, and the small springs 12 are fixed together by die-casting of the metal sheet 11, and the outer sleeve of the small spring 12 Connected with a plastic sleeve 4, the outside of the plastic sleeve 4 is sleeved with a large spring 5, the upper end of the small spring 12 is fixedly connected with the lower end of the Y-shaped device 3, and the upper end of the Y-shaped device 3 is connected with a rotatable tennis ball 1 through a metal pin 2 .

The middle part of the rotatable tennis ball 1 is provided with a through hole, the two ends of the through hole are equipped with a ring 10, the metal pin 2 is inserted in the through hole, and the two ends of the metal pin 2 pass through the ring 10 and The Y-shaped device 3 is fixed. This creates spin on the ball when it is hit.

The inverted T-shaped metal frame 8 is evenly provided with several height adjustment holes 15, and the lower end of the metal pipe 13 is provided with fixing holes 14 corresponding to the distance between the height adjustment holes 15. The height adjustment holes 15 and the fixing holes 14 are connected by pin mating. (also metal tube 13 can be inserted on the inverted T-shaped metal frame 8, and the rotating screw is worn on the inverted T-shaped metal frame 8, and the height is adjusted by rotating the screw to move or fix the metal tube 13.)

The bottom metal bracket 6 is composed of two metal tubes, the front ends of the two metal tubes are fixed by screws to form an acute angle, the front and the ends of the two metal tubes are sleeved with rubber sleeves 9, and the middle parts of the two metal tubes are Screw holes for fixing the inverted T-shaped metal frame 8 are provided, and the bottom metal bracket 6 and the inverted T-shaped metal frame 8 are fixedly connected to form a triangular structure.

The bottom end of the Y-shaped device 3 in this specific embodiment is connected to two small springs 12, and the two small springs 12 are fixed together by die-casting of metal sheets 11. Put plastic cover 4 on the outside of small spring 12, can beautify appearance, also can provide stability support when ball is hit. In order to prevent the ball from swinging too much and rebounding too slowly, a large spring 5 is placed outside the plastic sleeve 4. Two small springs 12 are connected to the metal tube 13 through die-casting, and the metal tube 13 is inserted into the inverted T-shaped metal tube. On the frame 8, a plurality of hole positions are stamped on the metal pipe 13 and the inverted T-shaped metal frame 8 simultaneously, and the connecting pins are inserted in different hole positions and can regulate the batting height of the whole trainer.

In order to prevent the bottom metal support 6 from rubbing against the ground when hitting the trainer, put 2 rubber sleeves on every metal pipe of the bottom metal support 6 . For strengthening the stability of the trainer when the ball is hit vigorously, a rubber sleeve 9 is respectively set at the end of each metal tube of the bottom metal bracket 6 .

Allow students to experience, improve and fix tennis hitting action by hitting a ball with a relatively fixed position and a stable rebound trajectory.

This specific embodiment has a simple structure, and there is a rotatable tennis ball on the top. After the ball is hit, it can swing back and forth by relying on a spring. By repeatedly hitting the rotatable tennis ball with a relatively fixed position, the correct swing (forehand, backhand, volley) can be quickly established. ) muscle memory, enhance the hitting feel, and improve the hitting level.

Claims (4)

1. A tennis trainer with rotatable tennis balls is characterized in that it comprises rotatable tennis balls, metal pins, Y-shaped devices, plastic sleeves, large springs, bottom metal supports, plastic discs, inverted T-shaped metal frames, Metal sheets, small springs, metal tubes, the front bottom of the bottom metal bracket is fixed with a plastic disc, the middle part of the bottom metal bracket is fixed with an inverted T-shaped metal frame through screws, and the upper end of the inverted T-shaped metal frame is inserted through a connecting pin There is a metal tube, and the upper end of the metal tube is die-casted and fixed with two small springs. The small springs are fixed together by metal sheet die-casting. The outside of the small spring is sleeved with a plastic sleeve. It is fixedly connected with the lower end of the Y-shaped device, and the upper end of the Y-shaped device is connected with a rotatable tennis ball through a metal pin. 2. A tennis trainer with rotatable tennis balls according to claim 1, characterized in that a through hole is arranged in the middle of the rotatable tennis ball, rings are installed at both ends of the through hole, metal pins It is inserted into the through hole, and the two ends of the metal pin pass through the ring and are fixed with the Y-shaped device. 3. A tennis trainer with rotatable tennis balls according to claim 1, characterized in that several height adjustment holes are evenly arranged on the inverted T-shaped metal frame, and the lower end of the metal pipe is provided with height adjustment holes The fixing holes corresponding to the hole distance, the height adjustment hole and the fixing hole are inserted through the connecting pin. 4. A tennis trainer with rotatable tennis balls according to claim 1, characterized in that the bottom metal bracket is composed of two metal tubes, the front ends of the two metal tubes are fixed by screws to form an acute angle, and the two metal tubes Both the front and the end of the root metal tube are sleeved with rubber sleeves, and the middle parts of the two metal tubes are provided with screw holes for fixing the inverted T-shaped metal frame, and the bottom metal bracket and the inverted T-shaped metal frame are fixedly connected to form a triangular structure.