CN205145556U - Tennis transmitter - Google Patents

Abstract

The utility model discloses a tennis ball launcher, which sequentially comprises a magazine for placing tennis balls, a rotatable dial, and a tennis ball launching device from top to bottom. The magazine includes ten hollow tubes vertically distributed along a circular track. , the upper and lower ends of the hollow tube are sequentially fixed with the first fastening plate and the second fastening plate through the connecting rod. There are three dial guides between the two rotating plates, and the tennis ball launching device includes a third fastening plate arranged directly below the dial through a connecting rod, and a third fastening plate arranged vertically and parallelly on the lower end surface of the third fastening plate. Two support plates, a launch base plate movably hinged between the two support plates, the middle part of the launch base plate is fixed with a launch barrel, and four friction wheels are symmetrically arranged on both sides of the middle section and the tail section of the launch barrel. The utility model can better launch tennis balls, increase the shooting range of tennis balls, improve anti-interference ability, optimize tennis ball launching curves, and has simple structure and low cost.

Description

a tennis ball launcher

technical field

The utility model relates to a learning and sports article, in particular to a tennis ball launcher.

Background technique

Athletes and students in physical education generally need at least one sparring partner during training. Often due to the lack of sparring personnel, or because the sparring partner is unstable in launching angles, distances, and ball rotation, the training effect is not good. At present, the mainstream tennis ball launcher on the market still shoots the tennis ball through friction, but there are still shortcomings, such as relatively short shooting range under certain circumstances, limited angle launch, weak anti-interference ability of launch curve, and high cost.

Utility model content

The purpose of the utility model is to provide a tennis ball launcher which can increase the shooting range of the tennis ball, improve the anti-interference ability, optimize the tennis ball launch curve and have low cost.

The purpose of this utility model is achieved in that:

A tennis ball launcher, which includes a magazine for placing tennis balls, a rotatable dial, and a tennis ball launching device from top to bottom. The magazine includes ten hollow tubes distributed vertically along a circular trajectory for To store tennis balls, the upper and lower ends of the hollow tube are sequentially fixed with a first fastening plate and a second fastening plate through connecting rods, and the first fastening plate and the second fastening plate are all provided with holes corresponding to the hollow tube. Circular through holes; the dial includes two circular rotating plates that are symmetrically connected up and down on the dial coupling. Three circular through holes are evenly arranged on the two rotating plates along the circular track. Three dial guides communicating with circular through holes are arranged between the two rotating plates, and the upper end of the dial coupling is drivingly connected with the output shaft of the dial motor fixed in the middle of the second fastening plate; The device includes a third fastening plate arranged directly below the dial through a connecting rod, two support plates arranged vertically and parallelly on the lower end surface of the third fastening plate, and a launcher hinged between the two support plates. Bottom plate, the third fastening plate is provided with a circular through hole for dropping tennis balls; the middle part of the launch base plate is fixed with a launch gun barrel, and the two sides of the middle section and the tail section of the launch gun barrel are symmetrically arranged There are four friction wheels, and the friction wheels are driven and connected with four brushless motors fixed on the launch base plate, and the brushless motors provide power to the friction wheels; There is a hollowed out part, and the rear end of the launch barrel is connected with an elbow with an inlet facing the circular through hole on the third fastening plate, only when the elbow, the thumbwheel guide and the hollow tube on the magazine are combined When conducting, the tennis ball can run to the launch barrel, and one side of the support plate is also fixedly provided with a motor for adjusting the inclination angle of the launch base plate, thereby controlling the launch pitch angle of the launch barrel.

Further, the material of the hollow tube is a carbon tube, which has many advantages such as high strength, high toughness, corrosion resistance, high temperature resistance, high insulation resistance, good flame retardancy, light weight, long life, and not easy to deform.

Further, the friction wheel includes a flywheel connected to the brushless motor and a silicone ring fixed on the outer surface of the flywheel. The silicone ring is soft, not easy to damage the tennis ball, and has good friction performance.

Compared with the closest prior art, the new tennis ball launcher of the present utility model has outstanding substantive features and significant progress as follows:

1: Since the tennis ball launcher of the present invention is equipped with a launch gun barrel and two sets of friction wheels, the shooting range of the tennis ball is well guaranteed, the anti-interference ability of the tennis ball is improved, and the tennis ball launch curve is optimized.

2: Since the tennis ball launcher of the present invention is equipped with a motor outside the entire device, the pitch angle of the launcher barrel can be easily controlled, and then multi-angle launch of tennis balls can be easily realized.

3: Since the tennis ball launcher of the present invention is provided with a dial, there are only three dial guides on the dial, and the speed of the tennis ball can be controlled easily by controlling the rotating speed of the dial through the dial motor.

4: The cost of the tennis ball launcher of the utility model is much lower than that of the mainstream tennis ball launchers on the market.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a tennis ball launcher in an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of the launch barrel of the tennis ball launcher according to the embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the dial portion of the tennis ball launcher according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of the partial structure of the tennis ball launcher in the embodiment of the present invention after being turned over.

Explanation of component numbers in the schematic diagram:

1-magazine; 2-launching barrel; 3-friction wheel; 4-motor; 5-dial; 6-launching bottom plate 7-bent pipe; ; 11-dial coupling; 12-brushless motor; 13-support plate; 14-first fastening plate; 15-second fastening plate; 16-third fastening plate; 17-connecting rod.

detailed description

Below in conjunction with accompanying drawing, tennis ball launcher of the present utility model is further described.

As shown in Figure 1, a tennis ball launcher comprises a magazine 1 for placing tennis balls, a rotatable dial 5, and a tennis ball launching device from top to bottom. The vertically distributed hollow tubes 9, in this embodiment, the hollow tubes 9 are made of carbon tubes, which are light in texture and high in strength. The upper and lower ends of the hollow tube 9 are sequentially fixed with a first fastening plate 14 and a second fastening plate 15 through a connecting rod 17, and the first fastening plate 14 and the second fastening plate 15 are all provided with hollow tubes. 9 corresponding circular through holes.

The dial 5 includes two circular rotating plates that are symmetrically connected up and down to the dial coupling 11, and the two rotating plates are evenly provided with three circular through holes along the circular track, and the two rotating plates Three dial guides 8 communicating with circular through holes are arranged therebetween, and the upper end of the dial coupling 11 is drivingly connected with the output shaft of the dial motor 10 fixed in the middle of the second fastening plate 15 .

The tennis ball launching device comprises a third fastening plate 16 arranged directly below the dial 5 through a connecting rod, two support plates 13 arranged vertically and parallelly on the lower end surface of the third fastening plate 16, and movable hinges on the bottom of the third fastening plate 16. Launching bottom plate 6 between two support plates, described the 3rd fastening plate 16 is provided with a circular through hole that is used to drop tennis ball, and the middle part of described launching bottom plate 6 is fixed with launching gun barrel 2, and described Four friction wheels 3 are symmetrically arranged on both sides of the middle section and the tail section of the launch gun barrel, and the friction wheels 3 are driven and connected with four brushless motors 12 fixed on the launch base plate 6. Specifically, the friction wheels 3 It includes a flywheel driven and connected to the brushless motor 12 and a silicone ring fixed on the outer surface of the flywheel.

Both sides of the middle section and the tail section of the launch gun barrel 2 are provided with hollowed out parts relative to the friction wheel 3, and the rear end of the launch gun barrel 2 is connected with a curved opening facing the circular through hole on the third fastening plate 16. One side of the tube 7 and the support plate 13 is also fixedly provided with a motor 4 for adjusting the inclination angle of the launch base plate 6, thereby controlling the launch pitch angle of the launch gun barrel 2.

The use and working process of this embodiment are as follows:

Put tennis balls in each hollow tube 9, the dial motor 10 drives the dial 5 to rotate, and the dial 5 is in the process of rotating, when the upper port of the dial guide 8 is aligned with the hollow pipe 9 up and down, the tennis ball of the hollow pipe 9 will be under weight. Under the action, it falls into the dial guide 8, and at the same time, when the lower port of the dial guide 8 rotates to align with the circular through hole on the third fastening plate 16, the tennis ball in the dial guide 8 falls into the elbow 7 Then roll into the launch barrel 2, and then launch from the launch barrel 2 under the action of two groups of friction wheels. The elevation angle of the launch barrel 2 can be realized by adjusting the inclination angle of the launch base plate 6 by the motor 4. By adjusting the dial The motor 10 controls the rotating speed of the dial 5 to realize the control of the launch speed of the tennis ball, which is convenient and accurate to control and meets the different demands on the tennis ball launcher.

The above-described embodiments are only preferred embodiments of the present utility model, and do not limit the scope of protection of the present utility model, so: all equivalent transformations made according to the structure of the present utility model, shape, and principles should be covered by the utility model. within the scope of protection.

Claims (3)

1. A tennis ball launcher, characterized in that: from top to bottom successively comprises a magazine (1) for placing tennis balls, a rotatable dial (5), a tennis ball launcher, The magazine (1) includes ten hollow tubes (9) vertically distributed along a circular trajectory, and the upper and lower ends of the hollow tubes (9) are sequentially fixed with first fastening plates ( 14) and the second fastening plate (15), the first fastening plate (14) and the second fastening plate (15) are all provided with circular through holes corresponding to the hollow tube (9); The dial (5) includes two circular rotating plates symmetrically connected up and down to the dial coupling (11), and the two rotating plates are uniformly provided with three circular through holes along the circular track, Three dial guides (8) connected to circular through holes are arranged between the two rotating plates, and the upper end of the dial coupling (11) is connected with the dial motor fixed in the middle of the second fastening plate (15). (10) output shaft drive connection; The tennis ball launching device includes a third fastening plate (16) arranged directly below the dial (5) through a connecting rod, and two supports vertically and parallelly arranged on the lower end surface of the third fastening plate (16). Plate (13), the launch base plate (6) that is hinged between the two support plates, the third fastening plate (16) is provided with a circular through hole for dropping tennis balls, and the launch base plate The middle part of (6) is fixed with launch gun barrel (2), and the both sides of described launch gun barrel middle section and tail section are symmetrically provided with four friction wheels (3), and described friction wheel (3) is fixed on launch base plate ( 6) The four brushless motors (12) on the top are driven and connected, and the two sides of the middle section and the tail section of the launch gun barrel (2) are provided with hollowed out parts relative to the friction wheels (3), and the launch gun barrel (2) The rear end is connected with the elbow (7) with the entrance facing the circular through-hole on the third fastening plate (16), and one side of the support plate (13) is also fixedly provided with a button for adjusting the launch base plate (6). Angle of inclination, thereby controls the motor (4) that launches gun barrel (2) to launch pitch angle. 2. The tennis ball launcher according to claim 1, characterized in that: the hollow tube (9) is made of carbon tube. 3. The tennis ball launcher according to claim 1, characterized in that: the friction wheel (3) comprises a flywheel drivingly connected to the brushless motor (12) and a silicone ring fixed on the outer surface of the flywheel.