CN218529733U

CN218529733U - Give ball subassembly and tennis trainer

Info

Publication number: CN218529733U
Application number: CN202222385718.XU
Authority: CN
Inventors: 彭峻
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-02-28
Anticipated expiration: 2032-09-07

Abstract

The application relates to a give ball subassembly and tennis trainer, wherein, tennis is given ball subassembly, includes: the first pipe body is horizontally and obliquely arranged, the first end of the first pipe body is higher than the second end of the first pipe body, and the first end of the first pipe body is provided with a ball inlet; the second tube body is vertically arranged, the first end of the second tube body is communicated with the first tube body, and the second end of the second tube body is provided with a ball outlet. The technical scheme of this application has solved the problem that the practitioner experience is not good when practicing tennis among the prior art effectively.

Description

Give ball subassembly and tennis trainer

Technical Field

The application relates to the technical field of tennis training, in particular to a tennis feeding assembly and a tennis training device.

Background

Tennis is popular with more and more people as a sport with strong fitness and sports. But this operation has not gained popularity at this stage due to its requirements for field and skill base.

When tennis balls are picked up, special persons are required to pick up the scattered tennis balls one by one and place the tennis balls into the tennis frame, then special accompanying persons are required to give the tennis balls, or the practicing persons draw time to give the tennis balls, so that the efficiency of the tennis ball feeding mode is low, and the ball practicing experience of the practicing persons is poor.

SUMMERY OF THE UTILITY MODEL

The application provides a give ball subassembly and tennis trainer for solve the problem that practitioner experience is not good when practicing tennis among the prior art.

To solve the above problems, the present application provides a tennis ball feeding assembly, comprising: the first pipe body is horizontally and obliquely arranged, the first end of the first pipe body is higher than the second end of the first pipe body, and the first end of the first pipe body is provided with a ball inlet; the second body, the vertical setting of second body, the first end and the first body of second body are linked together, and the second end of second body has out the ball mouth.

Further, the second pipe body is of a telescopic structure.

Further, the second tubular body comprises a plurality of second tubular body segments, adjacent second tubular body segments being telescopically connected.

Further, give ball subassembly still includes damping structure, and damping structure sets up in the second body.

Further, the damping structure sets up in the second pipe section of lowermost, and the damping structure includes: the tennis ball bearing comprises a plurality of spring pieces, wherein each spring piece is of a curve structure, the minimum diameter among the spring pieces is smaller than the outer diameter of a tennis ball, the tennis ball is pressed against the spring pieces, and the tennis ball can pass through holes among the spring pieces; or the middle of the elastic net sheet is provided with a through hole, the inner diameter of the through hole is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the through hole, and the tennis ball can pass through the through hole.

Furthermore, the first pipe body comprises a first horizontal pipe section and a second horizontal pipe section, the first end of the first horizontal pipe section is a ball inlet, the second end of the first horizontal pipe section is communicated with the first end of the second horizontal pipe section, the first horizontal pipe section extends from the ball blocking net to a practicer, the second horizontal pipe section extends along the width direction of the ball blocking net, and the second pipe body is arranged on the second horizontal pipe section.

Furthermore, the ball feeding assembly further comprises a ball feeding turntable structure, the ball feeding turntable is arranged between the first horizontal section and the second horizontal section, the ball feeding turntable structure comprises a turntable motor and a turntable, the turntable motor is coaxially connected with the turntable, the turntable comprises a first turntable side plate, a second turntable side plate and a plurality of turntable partition plates, each turntable partition plate is radially arranged between the first turntable side plate and the second turntable side plate, a tennis ball containing space is formed between every two adjacent turntable partition plates, and an inlet of the tennis ball containing space is located on the side face of the turntable.

Further, the second body is a plurality of, and a plurality of second bodys set up on the horizontal pipeline section of second, give the ball subassembly and still include falling ball switching structure, and falling ball switching structure sets up on the second body.

Further, falling ball switches structure is including switching motor, first communicating pipe and second communicating pipe, and first communicating pipe and second communicating pipe all link to each other with the switching motor, and first communicating pipe is the straight tube section, and the second is right angle pipe section communicating pipe, and second horizontal pipe section has the fracture section, and the fracture section is located directly over the second body that is close to the first end of second horizontal pipe section, and switching motor drive first communicating pipe or second are in the fracture section communicating pipe.

According to another aspect of the application, a tennis training device is further provided, and the tennis training device comprises a ball blocking component, a ball receiving component and a ball feeding component, wherein the ball receiving component is arranged adjacent to the ball blocking component, the ball feeding component is arranged on one side of the ball receiving component, which is far away from the ball blocking component, and the ball feeding component is the ball feeding component.

Compared with the prior art, the technical scheme provided by the application has the following advantages:

according to the technical scheme, the first pipe body is horizontally inclined, so that tennis balls roll to the second pipe body from the first pipe body under the action of gravity, and then fall from the ball outlet of the second pipe body, so that a partner can not be used for playing the tennis balls, or the partner can play the tennis balls. The structure can greatly improve the experience of tennis trainees in practicing the ball. The technical scheme of this application has solved the problem that the practitioner experience is not good when practicing tennis among the prior art effectively.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 illustrates a schematic front view of an embodiment of a ball feed assembly of the present application;

FIG. 2 illustrates a side view schematic of the ball feed assembly of FIG. 1;

FIG. 3 illustrates a schematic front view of a ball feed turret of the ball feed assembly of FIG. 1;

FIG. 4 shows a schematic top view of the ball feed carousel of FIG. 3;

FIG. 5 shows a schematic view of a damping structure of the ball feed assembly of FIG. 1;

FIG. 6 shows a schematic view of another damping structure of the ball feed assembly of FIG. 1.

Wherein the figures include the following reference numerals:

1. an operator; 2. a tennis racket; 3.1, a front door frame; 3.2, a rear door frame; 3.3, a waterproof top plate; 5. a power distribution control box; 7. a camera; 8. an image projection device; 13. a ball collection assembly; 13.5, rolling ball inclined plate; 14. a tennis ball lifting structure; 14.1, lifting the partition plate; 15. a first horizontal tube section; 16. a ball feeding turntable structure; 16.1, a turntable motor; 16.2, a turntable with a ball containing gap; 16.3, ball accommodating gaps; 16.4, an outer cylinder; 16.5, an outer cylinder ball inlet; 16.6, a ball outlet of the outer cylinder; 17. a falling ball switching structure 18, a second horizontal pipe section; 19. a second tube; 20. a damping structure; 21. an elastic net; 22. a via hole; 23. a spring plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 to 6, the tennis ball feeding assembly of the present embodiment includes: a first tube and a second tube 19. The first pipe body is horizontally arranged in an inclined mode, the first end of the first pipe body is higher than the second end of the first pipe body, the first end of the first pipe body is provided with a ball inlet, the second pipe body 19 is arranged vertically, the first end of the second pipe body 19 is communicated with the first pipe body, and the second end of the second pipe body 19 is provided with a ball outlet.

According to the technical scheme, the first pipe body is horizontally arranged in an inclined mode, therefore, tennis balls roll to the second pipe body 19 from the first pipe body under the action of gravity and fall from the ball outlet of the second pipe body 19, and accordingly, a partner can not be used for playing the tennis balls or the tennis balls can not be played by the partner. The structure can greatly improve the experience of tennis trainees in practicing the ball. The technical scheme of this embodiment has solved the problem that the practitioner experience is not good when practicing tennis among the prior art effectively.

The first tube comprises a first horizontal tube section 15 (a ball chute) and a second horizontal tube section 18 (a ball drop chute), the second tube 19 being a ball drop tube. The diameter of the first pipe body and the diameter of the second pipe body 19 are both larger than the diameter of a single tennis ball and smaller than the diameters of two tennis balls, and the ball outlet of the second pipe body 19 faces the ground vertically.

As shown in fig. 1 and 2, in the present embodiment, the second tube 19 has a telescopic structure. The second tube 19 is a telescopic structure, so that the landing height of tennis balls can be adjusted according to requirements, for example, the height of the operator 1 is different, and the landing height can be adjusted according to requirements, or the landing height can be adjusted according to different heights of adults and children.

As shown in fig. 1 and 2, in the solution of the present embodiment, the second pipe 19 includes a plurality of second pipe segments, and adjacent second pipe segments are telescopically connected. The structure has lower processing cost and convenient arrangement. The second pipe body sections are three sections for example, the uppermost second pipe body section is larger than the middle second pipe body section, the middle second pipe body section is larger than the lower second pipe body section, that is, the three second pipe body sections are in a nested structure, and the adjacent second pipe body sections are in telescopic matching connection in a sleeve structure, so that the prior art is mature, and details are not repeated here.

As shown in fig. 1 and 2, in the solution of this embodiment, the ball feed assembly further includes a damping structure 20, and the damping structure 20 is disposed in the second tube 19. The damping structure 20 effectively ensures that the tennis ball can be bounced to a reasonable height after falling to the ground, so that the tennis ball is convenient for an operator 1 to hit. It should be noted that, the damping structure 20 is matched with the telescopic structure of the second tube 10, so as to further facilitate the operator 1 to control the falling speed and the bouncing height of the tennis ball.

As shown in fig. 2, 5 and 6, in the solution of the present embodiment, the damping structure 20 is disposed in the second tube segment at the lowest part, and the damping structure 20 includes: a plurality of spring pieces 23. Each spring piece 23 is of a curve structure, the minimum diameter between the spring pieces 23 is smaller than the outer diameter of the tennis ball, the tennis ball presses against the spring pieces 23, and the tennis ball can pass through the through holes between the spring pieces 23. The structure has the advantages of low processing cost, convenient setting and easy disassembly and assembly. As another embodiment the damping structure 20 may be an elastic net, 21. The middle of the elastic net piece 21 is provided with a through hole, the inner diameter of the through hole 22 is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the through hole 22, and the tennis ball can pass through the through hole 22. The spring piece 23 or the elastic net piece 21 can reduce the falling speed of tennis balls.

As shown in fig. 1 and 2, in the solution of the present embodiment, the first pipe body includes a first horizontal pipe section 15 and a second horizontal pipe section 18, a first end of the first horizontal pipe section 15 is a ball inlet, a second end of the first horizontal pipe section 15 is communicated with a first end of the second horizontal pipe section 18, the first horizontal pipe section 15 extends from the ball blocking net to the trainee, the second horizontal pipe section 18 extends along the width direction of the ball blocking net, and the second pipe body 19 is disposed on the second horizontal pipe section 18. The combination of the first horizontal segment 15 and the second horizontal segment 18 facilitates the practice of the operator 1 and further facilitates the placement of the dropped ball. For example, when a plurality of operators 1 practice, two second tubes 19 may be provided on the second horizontal tube section 18 according to the length of the second horizontal tube section 18.

As shown in fig. 1 to 4, in the technical solution of this embodiment, the ball feeding assembly further includes a ball feeding turntable structure 16, the ball feeding turntable is disposed between the first horizontal section and the second horizontal section, the ball feeding turntable structure 16 includes a turntable motor and a turntable, the turntable motor is coaxially connected to the turntable, the turntable includes a first turntable side plate, a second turntable side plate and a plurality of turntable partitions, each turntable partition is radially disposed between the first turntable side plate and the second turntable side plate, a tennis ball receiving space is disposed between adjacent turntable partitions, and an inlet of the tennis ball receiving space is located on a side surface of the turntable. The regularity of ball feeding is ensured by the arrangement of the ball feeding turntable structure 16. The ball feeding turntable structure 16 comprises a turntable motor 16.1, a turntable with a ball containing gap 16.2, a ball containing gap 16.3, an outer cylinder 16.4, an outer cylinder ball inlet 16.5 and an outer cylinder ball outlet 16.6, wherein the side wall of the turntable with the ball containing gap 16.2 is provided with a port, the ball inlet of the outer cylinder is 16.5 during ball inlet, and the ball outlet of the outer cylinder is 16.6 during ball outlet.

As shown in fig. 1 and fig. 2, in the technical solution of the present embodiment, the number of the second pipe bodies 19 is multiple, the multiple second pipe bodies 19 are disposed on the second horizontal pipe section 18, the ball feeding assembly further includes a ball falling switching structure 17, and the ball falling switching structure 17 is disposed on the second pipe bodies 19. The arrangement of the ball falling switching structure 17 can select the ball outlet of the second tube 19. It should be noted that the ball feeding assembly of the present embodiment further includes a control structure, and the control structure controls the switching motor, the turntable motor, and the like, so that automatic control can be realized, and the automation level of the tennis training device is further improved.

As shown in fig. 1 and fig. 2, in the technical solution of this embodiment, the falling ball switching structure 17 includes a switching motor, a first communicating pipe and a second communicating pipe, the first communicating pipe and the second communicating pipe are both connected to the switching motor, the first communicating pipe is a straight pipe section, the second communicating pipe is a right-angle pipe section, the second horizontal pipe section 18 has a fracture section, the fracture section is located right above the second pipe body 19 near the first end of the second horizontal pipe section 18, and the switching motor drives the first communicating pipe or the second communicating pipe to be located at the fracture section. The first communicating pipe ensures that tennis balls can smoothly reach the second pipe body 19 at the far end, and the second communicating pipe ensures that tennis balls can not reach the second pipe body 19 at the far end and only reach the second pipe body 19 at the lower part of the second communicating pipe correspondingly.

The application also provides a tennis training device. The tennis training device comprises a ball blocking assembly, a ball receiving assembly and a ball feeding assembly, wherein the ball receiving assembly is arranged adjacent to the ball blocking assembly, the ball feeding assembly is positioned on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and the ball feeding assembly is the ball feeding assembly.

Through the above, the operator 1 of the present application holds the tennis racket 2 to hit the ball, and the front door frame 3.1, the rear door frame 3.2, the waterproof top plate 3.3, the power distribution control box 5, the camera 7, the image projection device 8 and the like jointly form the tennis training device.

The ball collecting assembly 13 of the present application includes: and a ball chute 13.4. The ball chute 13.4 comprises a bottom plate, the bottom plate of the ball chute 13.4 is obliquely arranged, a ball outlet hole is formed in the position corresponding to the lower part of the bottom plate of the ball chute 13.4, and the diameter of the ball outlet hole is larger than the outer diameter of the tennis ball.

According to the technical scheme, the ball collecting assembly 13 comprises a ball sliding groove, the structure of the ball sliding groove 13.4 can play a role in collecting tennis balls, the bottom plate of the ball sliding groove 13.4 is obliquely arranged, so that the tennis balls can be rolled to a lower position from a higher position, a ball outlet is formed in the lower position, the tennis balls can be moved to the next position through the ball outlet, and the labor intensity of manual ball picking and carrying is greatly reduced. The technical scheme of the application has solved the tennis among the prior art effectively and has picked up the problem that efficiency is lower, waste time and energy.

It should be noted that the middle of the bottom plate of the ball sliding groove 13.4 is higher and the two ends are gradually inclined, so that the number of the ball sliding holes can be two, and the balls can be discharged from the two ends after being collected. According to the technical scheme, the bottom plate of the ball sliding groove 13.4 is gradually inclined from the first side to the second side of the bottom plate of the ball sliding groove 13.4 in the left and right directions of hitting balls by a human body. The diameter of the tennis outlet hole is slightly larger than that of a tennis ball, and the wall surface of the tennis outlet hole is in a smooth arc shape, so that the tennis ball is conveniently guided, and the condition that a plurality of tennis balls pass through the tennis outlet hole at the same time is avoided.

In the technical scheme of this application, swift current ball groove 13.4 includes the lateral wall, and along the width direction of receiving the ball subassembly, the bottom plate of swift current ball groove 13.4 sets up in slope gradually, and the ball hole is located the lateral wall at swift current ball groove 13.4. The structure has lower processing cost and convenient operation. It should be noted that the width of the bottom plate of the ball chute 13.4 is greater than the diameter of one tennis ball and smaller than the diameter of two tennis balls. This prevents two tennis balls from passing through the ball outlet hole at the same time.

In the technical solution of the present application (not shown in the figure), along a plane perpendicular to the bottom plate of the ball chute 13.4, the cross section of the bottom plate of the ball chute 13.4 is a circular arc, and the inner diameter of the circular arc is matched with the outer diameter of a tennis ball. The structure further ensures that the tennis ball rolls down along the preset track. The cross section is perpendicular to the direction of extension of the ball chute 13.4.

In the technical scheme of this application, receive the ball subassembly and still include: a ball collecting box body. The ball collecting box body comprises a front side plate 13.1, a rear side plate 13.2, a left side plate, a right side plate and an inclined bottom plate 13.3, the front side edge of the inclined bottom plate 13.3 of the ball collecting box body is connected with the lower edge of the front side plate 13.1 of the ball collecting box body, the rear side edge of the inclined bottom plate 13.3 of the ball collecting box body is connected with the upper edge of the front side plate 13.1 of the ball sliding groove 13.4, and the front side edge of the inclined bottom plate 13.3 is gradually reduced to the rear side edge of the inclined bottom plate 13.3. The structure enlarges the tennis ball receiving area and ensures that tennis balls can be received as much as possible. Tennis balls falling into the ball collecting box body roll from a high position to a low position under the action of gravity, so that the tennis balls roll into the ball sliding grooves 13.4 along the inclined bottom plates 13.3, and the tennis balls continue to move towards the ball outlet under the action of gravity in the ball sliding grooves 13.4. The structure has the advantages of low processing cost and convenient operation. The width of the ball collecting box is the same as the width of the tennis side curtain 3.4 (corresponding to the width of the net of the tennis).

In the technical scheme of this application, receive the ball subassembly and still include spin swash plate 13.5, spin swash plate 13.5's last side is adjacent with the last border of receiving the ball box body, spin swash plate 13.5's lower side and ground contact. The ball picking efficiency is further improved by the arrangement of the rolling ball inclined plate 13.5. When the force of the operator 1 is small, the tennis ball falls into the area between the operator 1 and the ball collecting assembly 13, the tennis ball is pushed by a tennis picking person with external force, and the tennis ball can roll into the ball collecting box body.

In the technical scheme of the application, the upper side edge of the rolling ball inclined plate 13.5 is pivotally connected with the ball collecting box body. The structure is convenient for folding the ball collecting component, so that the space can be saved when the ball collecting component is stored, transported and collected. Furthermore, the rolling ball sloping plate 13.5 is detachably connected with the ball collecting box body, so that the storage and transportation space is further saved.

In the technical scheme of this application, receive ball subassembly still includes tennis and promote structure 14, and tennis promotes structure 14 includes transmission band, drive wheel and follows the driving wheel, and the transmission band is the ground of closure annular, and drive wheel and follow the driving wheel are located the both ends of transmission band respectively. Above-mentioned structure has further reduced intensity of labour, has improved the automation that tennis was carried. Tennis balls roll from the ball chute 13.4 to the tennis ball lifting structure 14, the tennis ball lifting structure 14 lifts the tennis balls, then the tennis balls roll to the ball chute 15 and enter the ball falling chute pipe 18, and the tennis balls can enter a preset ball falling pipe 19 through the switching of the left and right ball falling switching structures 17. It should be noted that the axis of the driving wheel and the axis of the driven wheel are located in the same vertical plane, i.e. the tennis ball lifting structure 14 is vertically arranged.

In the technical scheme of this application, the transmission band still includes inboard transmission band, outside transmission band and a plurality of promotion baffle 14.1, and a plurality of promotion baffles 14.1 connect between inboard transmission band and outside transmission band looks interval. The structure has high dribbling efficiency and convenient use.

In the solution of the present application, the gap between adjacent lifting baffles 14.1 is larger than the diameter of one tennis ball and smaller than the diameter of two tennis balls. The structure avoids the problem that a plurality of tennis balls enter between the adjacent lifting partition plates 14.1 and the tennis balls in the same space interfere with each other.

The application also provides a tennis training device. The tennis training device comprises a ball blocking assembly, a ball receiving assembly and a ball feeding assembly, wherein the ball receiving assembly is arranged adjacent to the ball blocking assembly, the ball feeding assembly is positioned on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and the ball receiving assembly is the ball receiving assembly.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tennis ball feed assembly, comprising:

the ball inlet pipe comprises a first pipe body, a second pipe body and a ball outlet, wherein the first pipe body is horizontally arranged in an inclined manner, the first end of the first pipe body is higher than the second end of the first pipe body, and the first end of the first pipe body is provided with a ball inlet;

the second pipe body (19) is vertically arranged, the first end of the second pipe body (19) is communicated with the first pipe body, and the second end of the second pipe body (19) is provided with a ball outlet.

2. Ball feed assembly according to claim 1, characterized in that said second tubular body (19) is of telescopic construction.

3. Ball feed assembly according to claim 2, wherein the second tube (19) comprises a plurality of second tube segments, adjacent second tube segments being telescopically connected.

4. The ball feed assembly according to claim 3, further comprising a damping structure (20), the damping structure (20) being arranged within the second tube body (19).

5. The ball feed assembly of claim 4, wherein the damping structure (20) is disposed within the lowermost second tube section, the damping structure (20) comprising:

the tennis ball bearing comprises a plurality of spring pieces, wherein each spring piece is of a curve structure, the minimum diameter between the spring pieces is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the spring pieces, and the tennis ball can pass through holes between the spring pieces; or

The tennis ball fixing structure comprises an elastic net piece, wherein a through hole is formed in the middle of the elastic net piece, the inner diameter of the through hole is smaller than the outer diameter of a tennis ball, the tennis ball is pressed against the through hole, and the tennis ball can pass through the through hole.

6. The ball feed assembly of claim 1, wherein said first tube body comprises a first horizontal tube section (15) and a second horizontal tube section (18), a first end of said first horizontal tube section (15) being a ball inlet, a second end of said first horizontal tube section (15) being in communication with a first end of said second horizontal tube section (18), said first horizontal tube section (15) extending from a ball blocking net to an exerciser, said second horizontal tube section (18) extending along a width of said ball blocking net, said second tube body (19) being disposed on said second horizontal tube section (18).

7. The ball feed assembly of claim 6, further comprising a ball feed turret structure (16) disposed between the first horizontal tube section and the second horizontal tube section, the ball feed turret structure (16) including a turret motor and a turret, the turret motor being coaxially coupled to the turret, the turret including a first turret side plate, a second turret side plate, and a plurality of turret partitions, each of the turret partitions being radially disposed between the first and second turret side plates, a tennis ball receiving space being defined between adjacent turret partitions, an inlet of the tennis ball receiving space being located at a side of the turret.

8. The ball feed assembly according to claim 6, characterized in that said second tubular body (19) is plural, said plural second tubular bodies (19) being provided on said second horizontal tubular section (18), said ball feed assembly further comprising a ball drop switching structure (17), said ball drop switching structure (17) being provided on said second tubular body (19).

9. Ball feed assembly according to claim 8, wherein the ball drop switching structure (17) comprises a switching motor, a first communication pipe and a second communication pipe, the first communication pipe and the second communication pipe are both connected with the switching motor, the first communication pipe is a straight pipe section, the second communication pipe is a right-angle pipe section, the second horizontal pipe section (18) has a cut-off section, the cut-off section is located directly above the second pipe body (19) near the first end of the second horizontal pipe section (18), and the switching motor drives the first communication pipe or the second communication pipe to be located at the cut-off section.

10. Tennis training apparatus, comprising a ball blocking assembly, a ball receiving assembly and a ball feeding assembly, wherein the ball receiving assembly is arranged adjacent to the ball blocking assembly, the ball feeding assembly is arranged on one side of the ball receiving assembly away from the ball blocking assembly, and the ball feeding assembly is the ball feeding assembly as claimed in any one of claims 1 to 9.