Badminton training device with track changing function

Abstract

The badminton training device comprises a transverse moving guide rail and a throwing device which is inserted into the transverse moving guide rail in a threaded mode, the transverse moving guide rail comprises a supporting plate, a positioning block, a screw rod and a driving motor, a sliding groove is formed in the supporting plate, a sliding block is arranged in the sliding groove and connected with the bottom of the throwing device, and the positioning block is arranged in the sliding groove. The two sets of positioning blocks are symmetrically installed at the two ends of the supporting plate, the screw rod is rotationally installed between the two sets of positioning blocks, the driving motor is installed on one set of positioning blocks, the power output end of the driving motor is connected with the end of the screw rod, and the throwing device is arranged on the supporting plate in a sliding mode; the throwing device comprises an angle adjusting base, a throwing pipe, a discharging barrel, an opening and closing device and a magnetomotive throwing mechanism. According to the badminton training device designed by the invention, automatic throwing training of the badminton can be realized, two change modes of transverse track change and angle track change of the badminton can be realized in the training process, and the training intensity and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sports training equipment, and particularly to a badminton training device with a trajectory transformation function. Background Art

[0002] Sports is a complex social and cultural phenomenon. It is a social activity that uses physical and intellectual activities as basic means, and according to the laws of human growth and development, skill formation, and function improvement, etc., to promote all-round development, improve physical fitness and overall education level, enhance physical fitness and improve sports ability, and improve lifestyle and quality of life. With the expansion of international exchanges, the scale and level of the development of sports undertakings have become an important symbol to measure the development and progress of a country and society, and have also become an important means of diplomatic and cultural exchanges between countries. Sports can be divided into categories such as mass sports, professional sports, and school sports, including many elements such as sports culture, sports education, sports activities, sports competitions, sports facilities, sports organizations, and sports science and technology. Sometimes, special sports equipment is needed for training during the process of sports training. Among them, badminton is a typical sports training item. When conducting badminton hitting training, it often requires several people to cooperate in training.

[0003] However, the existing badminton training methods have the following problems: it often requires several people to cooperate in training, there is a lack of equipment dedicated to throwing badminton and assisting training personnel in training, and the existing throwing training equipment has a relatively simple structure and cannot perform trajectory-changing throwing training on badminton as needed, which affects the training effect. Therefore, corresponding technical solutions need to be designed to solve the existing technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a badminton training device with a trajectory transformation function, which solves the technical problem that it often requires several people to cooperate in training, there is a lack of equipment dedicated to throwing badminton and assisting training personnel in training, the existing throwing training equipment has a relatively simple structure, and it cannot perform trajectory-changing throwing training on badminton as needed, which affects the training effect.

[0005] To achieve the above object, the present invention provides the following technical solution: A badminton training device with a trajectory transformation function, including a horizontal moving guide rail and a throwing device threaded through the horizontal moving guide rail. The horizontal moving guide rail includes a support plate, positioning blocks, a screw rod, and a driving motor. A chute is opened on the support plate, and a slider is arranged in the chute. The slider is connected to the bottom of the throwing device. The positioning blocks are divided into two groups and symmetrically installed at both ends of the support plate. The screw rod is rotatably installed between the two groups of positioning blocks. The driving motor is installed on one of the positioning blocks and the power output end is connected to the end of the screw rod. The throwing device is slidably arranged on the support plate. The throwing device includes an angle adjustment base, a throwing tube, a feeding tube, a switch, and a magnetic driving throwing mechanism. The throwing tube is inclined and installed on the angle adjustment base. The feeding tube is vertically arranged on the throwing tube. The switch is located in the throwing tube and is used in cooperation with the feeding tube. The magnetic driving throwing mechanism is installed on the throwing tube;

[0006] The angle adjustment base includes a base body, rollers, side plates, a pusher, a rotating ball, and an elastic reset pad. A threaded opening is opened in the middle of the base body. The screw rod is threaded through the threaded opening. The rollers are divided into two groups and symmetrically installed at the bottom of the base body. The side plate is fixed to the upper left corner of the base body. The pusher is installed on the side plate and is used in cooperation with the rotating ball. The rotating ball is rotatably arranged on the base body. The elastic reset pad is placed inside the base body. One end of the elastic reset pad is connected to the base body and the other end is connected to the rotating ball;

[0007] The switch includes an arc-shaped support plate, a pressure sensor, a controller, a closing plate, and an electric push rod. The arc-shaped support plate is located below the feeding tube. The pressure sensor is installed on the arc-shaped support plate and is connected to the controller through a circuit. The closing plate is in a semi-circular structure and is divided into two groups. The two closing plates are symmetrically arranged at the bottom of the feeding tube. The electric push rod is located at the lower end of the feeding tube and the power output end is connected to the closing plate. The electric push rod is connected to the controller through a circuit;

[0008] The magnetic driving throwing mechanism includes a striking disc, a connecting rod, a bearing spring, and a magnetic force actuator. The striking disc is located in the throwing tube and is connected to the connecting rod below. The connecting rod is rotatably arranged on the rotating ball. One end of the bearing spring is connected to the connecting rod and the other end is connected to the rotating ball. The magnetic force actuator is inclined and installed on the throwing tube and the lower end faces the connecting rod.

[0009] As a preferred mode of the present invention, the pusher includes a servo motor and a pushing disc installed on the power output end of the servo motor. A notch is opened on the surface of the pushing block. A driven rod is arranged in the notch. The outer end of the driven rod is connected to the rotating ball.

[0010] As a preferred embodiment of the present invention, the elastic reset pad has an arc-shaped structure and is made of elastic metal material, and the surface of the elastic reset pad has a laminated structure.

[0011] As a preferred embodiment of the present invention, the throwing tube includes a main tube disposed obliquely and an outer cover fixed to the upper end of the main tube, and the diameter of the outer cover is larger than the diameter of the main tube.

[0012] As a preferred embodiment of the present invention, the blanking tube includes a riser tube connected to the main tube at the lower end and a feed hopper fixed to the upper end of the riser tube, and the feed hopper has a horn-shaped structure.

[0013] As a preferred embodiment of the present invention, the magnetic force actuator includes a mounting frame, a housing, an electromagnetic block, a magnet, a stress spring, a push rod and a contact ball. The mounting frame is fixed on the throwing tube, the housing is fixed to the lower end of the mounting frame, the electromagnetic block is located inside the housing, the magnet is located below the electromagnetic block and the two are used in cooperation, the magnet is connected to the push rod, the stress spring is sleeved on the push rod and the lower end is connected to the inner wall of the housing, and the contact ball is formed at the lower end of the push rod.

[0014] As a preferred embodiment of the present invention, the lower end magnetic pole of the electromagnetic block is equal to the upper end magnetic pole of the magnet in the energized state.

[0015] As a preferred embodiment of the present invention, the end of the connecting rod has a spherical structure and is used in cooperation with the contact ball.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention designs a trajectory-changing device for badminton training. The badminton training device includes a horizontal moving guide rail and a throwing device threaded through the horizontal moving guide rail. When badminton training is required, badminton can be pre-stored in the throwing device, and the automatic throwing process of badminton can be realized through the throwing device. At the same time, the horizontal guiding adjustment of the throwing device can be realized through the horizontal moving guide rail, so as to achieve the purpose of changing the horizontal trajectory of badminton. At the same time, the rotating base located at the bottom of the throwing device can realize the angular throwing process of the badminton, so as to achieve the purpose of changing the angular trajectory of the badminton. Through the above two trajectory-changing methods, the automation degree and training effect of the training device during the training of users can be greatly improved.

[0018] 2. The badminton training device designed by the present invention can realize the automatic throwing training of badminton, and can realize two changing methods of changing the horizontal trajectory and angular trajectory of badminton during the training process, greatly improving the training intensity and effect. Description of the Drawings

[0019] Figure 1 This is the overall structure diagram of the present invention;

[0020] Figure 2 This is the structure diagram of the throwing device described in the present invention;

[0021] Figure 3 This is the structure diagram of the angle adjustment base in the disassembled state described in the present invention;

[0022] Figure 4 This is the structure diagram of the arc-shaped supporting plate described in the present invention;

[0023] Figure 5 This is the structure diagram of the position of the closing plate described in the present invention;

[0024] Figure 6 This is the partial A structure diagram of the present invention.

[0025] In the figure: 1, support plate; 2, positioning block; 3, screw; 4, drive motor; 5, chute; 6, slider; 7, angle adjustment base; 8, throwing tube; 9, feeding tube; 10, opener; 11, magnetic throwing mechanism; 12, base body; 13, roller; 14, side plate; 15, pusher; 16, rotating ball; 17, elastic reset pad; 18, threaded port; 19, arc-shaped supporting plate; 20, pressure sensor; 21, controller; 22, closing plate; 23, electric push rod; 24, striking plate; 25, connecting rod; 26, bearing spring; 27, magnetic force actuator; 28, servo motor; 29, dial; 30, notch; 31, driven rod; 32, main pipe; 33, outer cover; 34, riser; 35, feed hopper; 36, mounting bracket; 37, housing; 38, electromagnet; 39, magnet; 40, stress spring; 41, ejector rod; 42, contact ball. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figure 1-6, the present invention provides a technical solution: a badminton training device with a trajectory transformation function, including a horizontal moving guide rail and a throwing device threaded through the horizontal moving guide rail. The horizontal moving guide rail includes a support plate 1, positioning blocks 2, a screw rod 3, and a driving motor 4. A chute 5 is provided on the support plate 1, and a slider 6 is arranged in the chute 5. The slider 6 is connected to the bottom of the throwing device. The positioning blocks 2 are divided into two groups and symmetrically installed at both ends of the support plate 1. The screw rod 3 is rotatably installed between the two groups of positioning blocks 2. The driving motor 4 is installed on one of the positioning blocks 2 and the power output end is connected to the end of the screw rod 3. The throwing device is slidably arranged on the support plate 1. The throwing device includes an angle adjustment base 7, a throwing tube 8, a feeding tube 9, a switch 10, and a magnetic throwing mechanism 11. The throwing tube 8 is inclined and installed on the angle adjustment base 7. The feeding tube 9 is vertically arranged on the throwing tube 8. The switch 10 is located in the throwing tube 8 and is used in cooperation with the feeding tube 9. The magnetic throwing mechanism 11 is installed on the throwing tube 8;

[0028] The angle adjustment base 7 includes a base body 12, rollers 13, side plates 14, a pusher 15, a rotating ball 16, and an elastic reset pad 17. A threaded port 18 is provided in the middle of the base body 12, and the screw rod 3 is threaded through the threaded port 18. The rollers 13 are divided into two groups and symmetrically installed at the bottom of the base body 12. The side plate 14 is fixed to the upper left corner of the base body 12. The pusher 15 is installed on the side plate 14 and is used in cooperation with the rotating ball 16. The rotating ball 16 is rotatably arranged on the base body 12. The elastic reset pad 17 is placed inside the base body 12. One end of the elastic reset pad 17 is connected to the base body 12 and the other end is connected to the rotating ball 16;

[0029] The switch 10 includes an arc-shaped support plate 19, a pressure sensor 20, a controller 21, a closing plate 22, and an electric push rod 23. The arc-shaped support plate 19 is located below the feeding tube 9. The pressure sensor 20 is installed on the arc-shaped support plate 19 and is connected to the controller 21 through a circuit. The closing plate 22 is in a semi-circular structure and is divided into two groups. The two groups of closing plates 22 are symmetrically arranged at the bottom of the feeding tube 9. The electric push rod 23 is located at the lower end of the feeding tube 9 and the power output end is connected to the closing plate 22. The electric push rod 23 is connected to the controller 21 through a circuit. When the badminton is thrown out of the arc-shaped support plate 19, the pressure sensor 20 senses and transmits a signal to the controller 21. The controller 21 controls the electric push rod 23 to be energized. At this time, the electromagnetic push rod 23 pushes the closing plate 22 to open. A badminton in the feeding tube 9 falls onto the arc-shaped support plate 19. The pressure sensor 20 senses and closes the closing plate 22, stopping the falling of the badminton and completing one feeding;

[0030] The magnetic drive casting mechanism 11 includes a striking disk 24, a connecting rod 25, a pressure-bearing spring 26, and a magnetic actuator 27. The striking disk 24 is located inside the casting tube 8 and is connected to the connecting rod 25 at the lower end. The connecting rod 25 is rotatably arranged on the rotating ball 16. One end of the pressure-bearing spring 26 is connected to the connecting rod 25, and the other end is connected to the rotating ball 16. The magnetic actuator 27 is installed on the casting tube 8 in an inclined manner, and the lower end faces the connecting rod 25.

[0031] Further improved, as Figure 2 shown, the pusher 15 includes a servo motor 28 and a pusher disk 29 installed at the power output end of the servo motor 28. A notch 30 is formed on the surface of the pusher block. A driven rod 31 is arranged inside the notch 30. The outer end of the driven rod 31 is connected to the rotating ball 16. When the servo motor 28 is energized, it drives the pusher disk 29 to rotate. During the rotation of the pusher disk 29, it acts on the driven rod 31, so that the driven rod 31 rotates and drives the rotating ball 16 to rotate synchronously, causing the casting tube 8 to rotate and throw the badminton in different directions. When the driven rod 31 disengages from the notch 30, under the elastic force of the elastic reset pad 17, the rotating ball 16 is adjusted for reset.

[0032] Further improved, as Figure 3 shown, the elastic reset pad 17 has an arc-shaped structure and is made of elastic metal material. The surface of the elastic reset pad 17 has a laminated structure, which is convenient for resetting and adjusting the rotating ball 16.

[0033] Further improved, as Figure 2 shown, the casting tube 8 includes a main tube 32 arranged in an inclined manner and a housing 33 fixed to the upper end of the main tube 32. The diameter of the housing 33 is larger than that of the main tube 32, which is convenient for guiding out the badminton.

[0034] Further improved, as Figure 2 shown, the blanking tube 9 includes a vertical tube 34 connected to the lower end of the main tube 32 and a feed hopper 35 fixed to the upper end of the vertical tube 34. The feed hopper 35 has a horn-shaped structure, which is convenient for guiding the badminton in.

[0035] Further improved, as Figure 5As shown in the figure, the magnetic actuator 27 includes a mounting bracket 36, a housing 37, an electromagnetic block 38, a magnet 39, a force-bearing spring 40, a push rod 41 and a contact ball 42. The mounting bracket 36 is fixed on the throwing tube 8, the housing 37 is fixed at the lower end of the mounting bracket 36, the electromagnetic block 38 is located inside the housing 37, the magnet 39 is located below the electromagnetic block 38 and the two are used in cooperation. The magnet 39 is connected to the push rod 41. The force-bearing spring 40 is sleeved on the push rod 41 and its lower end is connected to the inner wall of the housing 37. The contact ball 42 is formed at the lower end of the push rod 41. When the electromagnetic block 38 is energized, it acts on the magnet 39, causing the magnet 39 to drive the push rod 41 to move downward rapidly. The contact ball 42 acts on the connecting rod 25, the connecting rod 25 rotates and drives the hitting disc 24 to rotate synchronously, hitting the bottom of the badminton and hitting the badminton out. Then, when the electromagnetic block 38 is powered off, under the reaction of the force-bearing spring 40, the push rod 41 resets to complete one hitting action.

[0036] Further improved, as Figure 5 shown in the figure, the lower pole of the electromagnetic block 38 is the same as the upper pole of the magnet 39 when the electromagnetic block 38 is energized. When the electromagnetic block 38 is energized, it acts on the magnet 39, causing the magnet 39 to drive the push rod 41 to move downward rapidly.

[0037] Specifically, the end of the connecting rod 25 is in a spherical structure and is used in cooperation with the contact ball 42. By quickly acting on the contact ball 42 through the connecting rod 25, the contact ball 42 acts on the connecting rod 25, the connecting rod 25 rotates and drives the hitting disc 24 to rotate synchronously, hitting the bottom of the badminton and hitting the badminton out.

[0038] In use: When the user needs to conduct individual badminton practice, the driving motor 4 drives the screw rod 3 to rotate. During the rotation of the screw rod 3, the throwing device is driven to adjust the lateral trajectory. At the same time, in the energized state, the electromagnet block 38 acts on the magnet 39, causing the magnet 39 to drive the ejector rod 41 to move downward rapidly. The contact ball 42 acts on the connecting rod 25, and the connecting rod 25 rotates and drives the hitting disc 24 to rotate synchronously, hitting the bottom of the badminton and hitting the badminton out. Then, when the electromagnet block 38 is de-energized, under the reaction of the force-bearing spring 40, the ejector rod 41 is reset to complete one hit. When the badminton detaches and is thrown out from the arc-shaped support plate 19, the pressure sensor 20 senses it and transmits a signal to the controller 21. The controller 21 controls the electric push rod 23 to be energized. At this time, the electromagnetic push rod 23 pushes the closing plate 22 to open, and a badminton in the blanking cylinder 9 falls onto the arc-shaped support plate 19. The pressure sensor 20 senses it and closes the closing plate 22 to stop the falling of the badminton, completing one blanking. In addition, when the servo motor 28 is energized, it drives the dial 29 to rotate. During the rotation of the dial 29, it acts on the driven rod 31, causing the driven rod 31 to rotate and drive the rotating ball 16 to rotate synchronously, making the throwing tube 8 rotate and throw the badminton in different directions. When the driven rod 31 disengages from the notch 30, under the elastic force of the elastic reset pad 17, the rotating ball 16 is reset and adjusted, achieving the purpose of adjusting the angle trajectory of the badminton, realizing two change modes of the lateral trajectory change and the angle trajectory change of the badminton, and greatly improving the training intensity and effect.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0041] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A badminton training device with trajectory change function, characterized in that: The invention comprises a transverse movable guide rail and a thrower threadedly inserted on the transverse movable guide rail, wherein the transverse movable guide rail comprises a support plate (1), a positioning block (2), a screw rod (3) and a drive motor (4), wherein a slide groove (5) is provided on the support plate (1), a slider (6) is provided in the slide groove (5), and the slider (6) is connected to the bottom of the thrower, wherein the positioning block (2) is divided into two groups and symmetrically installed at two ends of the support plate (1), wherein the screw rod (3) is rotatably installed between the two groups of positioning blocks (2), and the drive motor (4) is installed on one group of the positioning blocks (2). ) and the power output end is connected to the end of the screw (3), the thrower is slidably arranged on the support plate (1), the thrower comprises an angle adjustment base (7), a throw tube (8), a discharge barrel (9), an opener and a closeer (10) and a magnetic throw mechanism (11), the throw tube (8) is installed on the angle adjustment base (7) in an inclined state, the discharge barrel (9) is vertically arranged on the throw tube (8), the opener and the closeer (10) is located in the throw tube (8) and is used in conjunction with the discharge barrel (9), and the magnetic throw mechanism (11) is installed on the throw tube (8); The angle adjustment base (7) comprises a base body (12), a roller (13), a side plate (14), a toggle (15), a rotating ball (16) and an elastic reset pad (17). A threaded opening (18) is provided in the middle of the base body (12). The screw rod (3) is threadedly inserted into the threaded opening (18). The roller (13) is divided into two groups and symmetrically mounted on the bottom of the base body (12). The side plate (14) is fixed to the upper left corner of the base body (12). The toggle (15) is mounted on the side plate (14) and used in conjunction with the rotating ball (16). The rotating ball (16) is rotatably arranged on the base body (12). The elastic reset pad (17) is built in the base body (12). One end of the elastic reset pad (17) is connected to the base body (12) and the other end is connected to the rotating ball (16). The shutter (10) comprises an arc-shaped support plate (19), a pressure sensor (20), a controller (21), a closing plate (22) and an electric push rod (23); the arc-shaped support plate (19) is located below the unloading barrel (9); the pressure sensor (20) is mounted on the arc-shaped support plate (19) and is connected to the controller (21) through a line; the closing plate (22) is a semi-annular structure and is divided into two groups; the two groups of closing plates (22) are symmetrically arranged at the bottom of the unloading barrel (9); the electric push rod (23) is located at the lower end of the unloading barrel (9) and the power output end is connected to the closing plate (22); the electric push rod (23) is connected to the controller (21) through a line; The magnetic throwing mechanism (11) comprises a striking disc (24), a connecting rod (25), a pressure spring (26) and a magnetic force actuator (27); the striking disc (24) is located in the throwing tube (8) and is connected to the connecting rod (25) at its lower part; the connecting rod (25) is rotatably arranged on the rotating ball (16); one end of the pressure spring (26) is connected to the connecting rod (25) and the other end is connected to the rotating ball (16); the magnetic force actuator (27) is installed on the throwing tube (8) in an inclined state and its lower end is directly opposite to the connecting rod (25).

2. A badminton training device with trajectory change function according to claim 1, characterized in that: The toggle device (15) comprises a servo motor (28) and a toggle plate (29) mounted on the power output end of the servo motor (28); a notch (30) is provided on the surface of the toggle block; a driven rod (31) is arranged in the notch (30); and the outer end of the driven rod (31) is connected to the rotating ball (16).

3. A badminton training device with trajectory changing function according to claim 1, characterized in that: The elastic reset pad (17) has an arc-shaped structure and is made of elastic metal material; the surface of the elastic reset pad (17) has a laminated structure.

4. A badminton training device with trajectory changing function according to claim 1, characterized in that: The casting tube (8) comprises a main tube (32) arranged in an inclined shape and an outer cover (33) fixed to the upper end of the main tube (32); the diameter of the outer cover (33) is larger than the diameter of the main tube (32).

5. A badminton training device with trajectory changing function according to claim 4, characterized in that: The lower barrel (9) comprises a vertical pipe (34) whose lower end is connected to the main pipe (32) and a feed hopper (35) fixed to the upper end of the vertical pipe (34), wherein the feed hopper (35) is a trumpet-shaped structure.

6. A badminton training device with trajectory changing function according to claim 1, characterized in that: The magnetic force actuator (27) comprises a mounting frame (36), a shell (37), an electromagnetic block (38), a magnet (39), a force spring (40), a push rod (41) and a contact ball (42); the mounting frame (36) is fixed on the casting tube (8); the shell (37) is fixed on the lower end of the mounting frame (36); the electromagnetic block (38) is located in the shell (37); the magnet (39) is located below the electromagnetic block (38) and the two are used in combination; the magnet (39) is connected to the push rod (41); the force spring (40) is sleeved on the push rod (41) and the lower end is connected to the inner wall of the shell (37); the contact ball (42) is formed on the lower end of the push rod (41).

7. A badminton training device with trajectory changing function according to claim 6, characterized in that: When the electromagnetic block (38) is powered on, the lower magnetic pole is the same as the upper magnetic pole of the magnet (39).

8. A badminton training device with trajectory changing function according to claim 6, characterized in that: The end of the connecting rod (25) is in a spherical structure and is used in conjunction with the contact ball (42).

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