CN215691535U

CN215691535U - Tennis training device capable of rotating tennis balls

Info

Publication number: CN215691535U
Application number: CN202122106246.5U
Authority: CN
Inventors: 张静
Original assignee: Nanjing Jiangning Higher Vocational And Technical School
Current assignee: Nanjing Jiangning Higher Vocational And Technical School
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-02-01
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a tennis training device capable of rotating tennis balls, which comprises: the bracket is of an inverted T-shaped structure; the ball feeding frame is arranged on the upper part of the bracket; the guiding component is arranged at the bottom of the ball sending frame and used for serving and guiding balls; the rotating assembly comprises a tubular shell arranged at the ball-out end of the guide assembly, six motors arranged in an annular matrix in the inner cavity of the shell and friction blocks which are rotatably connected to a motor driving rod and can move in the inner cavity of the shell in a telescopic manner; a serving assembly; the rotary components are independently arranged, so that the device is convenient to maintain, the rotary components can be adjusted at multiple angles, rotary balls with different angles can be launched, and the targeted training is convenient to carry out; through being provided with two independence and respectively with the carminative solenoid valve of two air compressors of control, the pressure accuracy degree of percussion at every turn can be effectively ensured in the setting of double-circuit atmospheric pressure percussion, improves the speed of percussion.

Description

Tennis training device capable of rotating tennis balls

Technical Field

The utility model relates to the technical field of tennis training, in particular to a tennis training device capable of rotating tennis balls.

Background

Tennis is a sport ball sport in China, two players are usually combined for accompanying training in training, various tennis trainers can be seen in the market, but the balls usually sent by the training machines are not in a rotating form and are mostly in a linear form when in use, so that the training machines are suitable for new players to train by using similar trainers, but for players in advance technology, various side spin balls are encountered in a game, the side spin balls usually deviate at certain angles on the original motion track due to the self rotating moment when falling to the ground, and the players can correctly judge the deflection position of the side spin ball according to the experience in ordinary training; secondly, the situation of the playing field is changed instantly and constantly in the process of playing, a player can make a judgment according to the landing position of the sidespin ball sent by the opponent and the position situation of the opponent, so that special directional training is often needed, but the tennis emitter in the prior art is single in function and cannot perform directional adjustment training in a targeted mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tennis training device capable of rotating tennis balls, and solves the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a tennis trainer capable of rotating tennis balls, comprising:

the bracket is of an inverted T-shaped structure;

the ball feeding frame is arranged on the upper part of the bracket;

the guiding component is arranged at the bottom of the ball sending frame and used for serving and guiding;

the rotating assembly comprises a tubular shell arranged at the ball-out end of the guide assembly, six motors arranged in an annular matrix in the inner cavity of the shell and friction blocks which are rotatably connected to a motor driving rod and can move in the inner cavity of the shell in a telescopic manner;

the ball serving assembly is connected to the guide assembly and used for providing ball serving power.

Preferably, the guide assembly comprises a base installed at the bottom of the support, a ball discharging mechanism installed at the top of the base and a guide pipe penetrating and communicating with the ball discharging mechanism.

Preferably, the top of the lower ball mechanism is provided with a feed opening communicated with the guide pipe, the side wall of the lower ball mechanism is rotatably connected with the L-shaped supporting block through a rotating shaft, and the lower part of the L-shaped supporting block and the side wall of the lower ball mechanism are also provided with springs in a contraction state.

Preferably, the service assembly comprises an air compressor mounted on the bracket and a nozzle connected with the exhaust end of the air compressor.

Preferably, the number of the air compressors is two, and the spray head is provided with two independent electromagnetic valves which respectively control the exhaust of the two air compressors.

Preferably, the base is a base with a built-in bearing capable of horizontally rotating.

Preferably, a lower limiting block is arranged on the opposite surface of the inner cavity of the guide pipe opposite to the L-shaped abutting block.

Compared with the prior art, the utility model has the following beneficial effects: the rotary assembly can be adjusted in multiple angles, and rotary balls with different angles are launched, so that the targeted training is facilitated; through being provided with two independence and respectively with the carminative solenoid valve of two air compressors of control, the pressure accuracy degree of percussion at every turn can be effectively ensured in the setting of double-circuit atmospheric pressure percussion, improves the speed of percussion.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

FIG. 3 is a side sectional detail view of the present invention;

FIG. 4 is a block diagram of the rotating assembly of the present invention;

fig. 5 is a structural view of the head of the present invention.

In the figure: 100. the device comprises a support, 200, a ball feeding frame, 300, a guide assembly, 310, a base, 320, a ball discharging mechanism, 321, a discharging opening, 322, an L-shaped abutting block, 323, a spring, 331, a lower limiting block, 330, a guide pipe, 400, a rotating assembly, 410, a shell, 420, a motor, 430, a friction block, 500, a ball serving assembly, 510, an air compressor, 520, a spray head, 521 and an electromagnetic valve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

The utility model provides a tennis trainer capable of rotating tennis balls, which can conveniently rotate at multiple angles to adjust serve, and is simple in structure and convenient to disassemble and maintain.

Referring to fig. 1 to 5, which are schematic structural views illustrating an embodiment of a rotatable tennis training device according to the present invention, referring to fig. 1 to 5, a main body of the rotatable tennis training device includes a support 100, a ball feeding frame 200, a guiding member 300, a rotating member 400, and a service member 500.

The support 100 is used for providing a main body support, specifically, the support 100 is in an inverted T-shaped structure, and when the support is used, the ball delivery frame 200, the guide assembly 300, the rotating assembly 400 and the ball serving assembly 500 are sequentially arranged on the support 100;

the ball feeding frame 200 is used for storing and playing a ball releasing role, specifically, the ball feeding frame 200 is installed at the upper part of the bracket 100, when in use, balls are put into the ball feeding frame 200, and the next ball falls into the guide assembly 300 under the guidance of the ball feeding frame 200;

the guide assembly 300 is used for guiding a service ball, and specifically, the guide assembly 300 includes a base 310 installed at the bottom of the support 100, a ball dropping mechanism 320 installed at the top of the base 310, and a guide tube 330 penetrating and communicating with the ball dropping mechanism 320, when the guide assembly 300 is used, when a ball of the ball feeding frame 200 falls into the guide assembly 300, due to the arrangement of the inclination angle of the guide tube 330, when the service ball assembly 500 hits the service ball, the ball can be launched at the inclination angle under the action of the guide tube 330, so as to define a service angle, preferably, the base 310 is a base 310 with a horizontally rotatable built-in bearing, and when the guide assembly is used, the launching angle can be adjusted by rotating the base 310;

the rotating assembly 400 is used for driving a service ball to rotate, specifically, the rotating assembly 400 includes a tubular housing 410 mounted at a service end of the guide assembly 300, six motors 420 mounted in an annular matrix in an inner cavity of the housing 410, and a friction block 430 rotatably connected to a driving rod of the motors 420 and capable of moving in an inner cavity of the housing 410 in a telescopic manner, the housing 410 is a hollow double-layer structure, wherein the motors 420 are fixedly connected with the outer housing 410, the friction block 430 can move in a telescopic manner on the inner housing 410, and the friction block 430 and the inner housing 410 are restricted from rotating by a groove formed in the housing 410, when in use, the motors 420 are powered on first, the inner diameters of the friction block 430 and the guide tube 330 are equal in a default state without affecting service ball service, when the rotating ball needs to be launched, only the corresponding motor 420 needs to be controlled to rotate to push out the friction block 430, when the ball is launched, the lateral force restriction is received, and further the rotation is realized, after the rotation is finished, the motor 420 is controlled to rotate reversely to reset the friction block 430, preferably, the friction blocks 430 of different motors 420 can be adjusted to lift to launch rotary balls in different rotating directions, preferably, the rotary assembly 400 is simple in structure and convenient to disassemble, install and maintain, and can be directly used as a common ball dispenser when the device is disassembled;

the ball serving assembly 500 is used for providing ball serving power, the ball serving assembly 500 comprises an air compressor 510 and a spray head 520, the air compressor 510 is mounted on the support 100, the spray head 520 is connected with the exhaust end of the air compressor 510, the air compressor 510 is provided with an independent pressurization tank, when the ball serving assembly is used, firstly, the device is electrified, the spray head 520 is aligned to the air inlet end of the guide pipe 330, then, pressure is generated through the air compressor 510 and is sprayed out of the spray head 520, and the pressure in the guide pipe 330 is increased so as to spray balls.

Wherein, the top of the ball feeding mechanism 320 is provided with a feed opening 321 communicated with the guide tube 330, the side wall of the ball feeding mechanism 320 is rotatably connected with an L-shaped abutting block 322 through a rotating shaft, the lower part of the L-shaped abutting block 322 and the side wall of the ball feeding mechanism 320 are also provided with a spring 323 in a contraction state, when in use, when no ball is in the inner cavity of the guide tube 330, the spring 323 contracts, the lower edge of the L-shaped abutting block 322 moves rightwards, the upper edge moves leftwards and contracts into the side wall of the feed opening 321, so that a tennis ball can fall into the guide tube 330, when the tennis ball falls into the guide tube 330, the tennis abuts against the lower edge of the L-shaped abutting block 322, so that the spring 323 is forced to expand, the upper edge of the L-shaped abutting block 322 exceeds the side wall of the feed opening 321, so as to limit the tennis ball to fall continuously, thereby ensuring that only one ball falls at a time, preferably, the lower limit block 331 is arranged on the opposite surface of the L-shaped abutting block 322 in the inner cavity of the guide tube 330, the tennis ball can be further limited;

further, the number of the air compressors 510 is two, two independent electromagnetic valves 521 which control the two air compressors 510 to exhaust are arranged on the spray head 520, the two air compressors 510 and the electromagnetic valves 521 work independently, and the pressure accuracy of each firing can be effectively guaranteed through the arrangement of double-path air pressure firing, and the firing speed is improved.

The working principle is as follows: the device is convenient to maintain through the independently arranged rotating assembly 400, and the rotating assembly 400 can be adjusted at multiple angles to launch rotating balls at different angles, so that the targeted training is convenient to carry out; through being provided with two independence and respectively with the exhaust solenoid valve 521 of two air compressors 510 of control, the pressure accuracy of percussion at every turn can be effectively ensured to the setting of double-circuit atmospheric pressure percussion, improves the speed of percussion.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A tennis training aid for rotatable tennis balls, comprising:

the bracket (100), the bracket (100) is of an inverted T-shaped structure;

the ball feeding frame (200), the ball feeding frame (200) is arranged at the upper part of the bracket (100);

the guide assembly (300), the said guide assembly (200) is installed in sending the ball frame (200) bottom, used for serving the ball to guide;

the rotating assembly (400) comprises a tubular shell (410) arranged at the ball serving end of the guide assembly (300), six motors (420) arranged in the inner cavity of the shell (410) in an annular matrix manner, and a friction block (430) which is rotatably connected to a driving rod of the motors (420) and can move in the inner cavity of the shell (410) in a telescopic manner;

a serving assembly (500), said serving assembly (500) being connected to the guide assembly (300) for providing a serving power.

2. A rotatable tennis training aid according to claim 1, wherein said guiding assembly (300) comprises a base (310) mounted at the bottom of the frame (100), a ball dropping mechanism (320) mounted at the top of the base (310), and a guiding tube (330) penetrating and communicating with the ball dropping mechanism (320).

3. The tennis training aid of claim 2, wherein a feed opening (321) communicated with the guide tube (330) is formed in the top of the tennis dropping mechanism (320), the side wall of the tennis dropping mechanism (320) is rotatably connected with an L-shaped abutting block (322) through a rotating shaft, and a spring (323) in a contraction state is further arranged on the lower portion of the L-shaped abutting block (322) and the side wall of the tennis dropping mechanism (320).

4. A rotatable tennis training aid according to claim 3, wherein said service assembly (500) comprises an air compressor (510) mounted on the frame (100) and a spray head (520) connected to the discharge end of the air compressor (510).

5. The tennis training aid for rotatable tennis balls according to claim 4, wherein the number of the air compressors (510) is two, and two independent solenoid valves (521) are provided on the spraying head for controlling the air discharge of the two air compressors (510).

6. A rotatable tennis training aid according to claim 5, wherein said base (310) is a horizontally rotatable base (310) with built-in bearings.

7. The tennis training aid of claim 6, wherein a lower limiting block (331) is disposed on the opposite side of the inner cavity of the guiding tube (330) from the L-shaped abutting block (322).