Shoulder control trainer for sports dance
By designing a sports dance shoulder control trainer including guide rails, movable rods, arm stops, sliders and springs, the problem of existing trainers being unable to effectively correct movements and causing shoulder pain is achieved, and the soft style is achieved. The shoulder and dorsal ligament stretching improves the training effect and movement normativeness.
Patent Information
- Application Number
- CN202411708374.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing sports dance shoulder trainers cannot effectively correct the trainer's movements, resulting in shoulder pain and movement deformation, affecting the training effect.
A sports dance shoulder control trainer is designed including guide rails, movable rods, arm stops, sliders and springs. Through the movable rods, it slides along an arc path to drive the trainer's arms to rotate backwards around the top of the head, using The spring stretching and resetting effect achieves gentle shoulder ligament stretching.
It effectively reduces the pain of training, improves the standardization of movements, comprehensively improves the training effect, and avoids shoulder discomfort and movement offset caused by inertial forces.
Smart Images
Figure CN119455331A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of dance training, in particular to a sports dance shoulder control trainer. Background Art
[0002] In sports dance training, the beauty of dance is inseparable from every precise, standard and perfect dance move, especially those large and difficult movements in the dance process, which have more stringent requirements on flexibility. Flexibility refers to the range of motion of human joints and the elasticity and stretching ability of joint ligaments, tendons, muscles, skin and other tissues. It is an important part of physical health. After flexibility is fully developed, the range of motion of human joints will be significantly increased, and joint flexibility will also be enhanced, so that the movements will be more coordinated, accurate and graceful. At the same time, in sports activities and daily life, it can reduce the damage to joints, muscles and other soft tissues caused by increased range of motion and excessive twisting. Before sports dance training, the most important thing is shoulder flexibility training, which often requires shoulder opening, that is, stretching of shoulder ligaments.
[0003] Trainers usually use traction bands to assist in stretching the arms. Specifically, the trainer holds the two ends of the traction band with both hands, and the distance between the arms is kept the same under the traction of the traction band. The dancer holds the traction band tightly and keeps the shoulders level. At this time, the waist and arms are used to exert force to rotate the arms upward, so that the arms holding the traction band pass over the top of the head and extend backward. This training process keeps the shoulders stable, so that reciprocating training allows the shoulder ligaments to be gradually stretched, laying a solid foundation for subsequent sports dance training.
[0004] However, although the existing training device is simple to operate, it cannot achieve an effective correction effect on the trainee's movements. Specifically, the trainee often has a large inertial force after the arm rotates during the process of exerting force, which easily causes shoulder pain in the trainee. After long-term training, the trainee not only consumes strength too quickly but also suffers from shoulder pain, so that the trainee's movements are easily deformed during the shoulder ligament stretching process. The trainee's movements are difficult to perform in a standardized manner, which directly affects the training effect of shoulder ligament stretching. Summary of the invention
[0005] The present invention provides a sports dance shoulder control trainer. Compared with existing trainers, the trainer can assist trainees in stretching shoulder and back ligaments while greatly reducing the pain of training, so that the trainees' movements during training are more standardized, thereby comprehensively improving the training effect.
[0006] The present invention provides a sports dance shoulder control trainer, comprising: a guide rail, a movable rod, two arm-blocking plates, a slider, and a first spring. The guide rail comprises a first rail section in a semicircular shape and a second rail section extending vertically. The arc concave surface of the first rail section faces downward, and the upper end of the second rail section is fixedly connected to one of the ends of the first rail section. The interiors of the first rail section and the second rail section are both hollow. A first through groove is provided in the middle of the side wall of the first rail section along the extension direction of the center line, and a second through groove is provided in the second rail section in the same direction and continuous with the first through groove. The movable rod is horizontally inserted in the first through groove, and the movable rod is slidably connected to the guide rail. The two arm-blocking plates are respectively connected to the two ends of the movable rod, and the ends of the arm-blocking plates away from the movable rod extend toward the center line direction of the first rail section. The slider is slidably connected to the first rail section, and the slider is limited in height by a limiting member. The first spring is placed in the cavity of the guide rail, and one end of the first spring is fixedly connected to the movable rod, and the other end is fixedly connected to the upper end of the slider.
[0007] Preferably, the arm stopper plate is semi-cylindrical, and the arc-shaped concave surfaces of the two arm stopper plates are opposite to each other, so as to limit the bending of the joints of the two arms.
[0008] Preferably, both ends of the movable rod are fixedly connected to a sleeve shell, a sliding rod is inserted into the sleeve shell for horizontal sliding, the sliding rod is polygonal, the arm plate is fixedly connected to the sliding rod, and a rubber layer is arranged in the sleeve shell to increase the resistance of the sliding rod when sliding.
[0009] Preferably, a sliding sleeve is fixedly connected to a position of the downward concave arc surface of the first rail section near the second rail section. The sliding sleeve is arc-shaped and concentric with the first rail section. A first push rod of matching shape is slidably connected in the sliding sleeve. A waist roller is connected to the lower end of the first push rod. A third through groove connected to the central cavity of the first rail section is formed on the downward concave arc surface of the first rail section. The third through groove penetrates the sliding sleeve. An arc-shaped second push rod is fixedly connected to the movable rod. The end of the second push rod slides in the sliding sleeve. A second spring is connected between the first push rod and the second push rod.
[0010] Preferably, the movable rod is rotatably provided with shaft sleeves on both sides of the guide rail, and a soft layer is provided on the outside of the shaft sleeves.
[0011] Preferably, a fourth through groove is horizontally opened on the side wall of the second rail section close to the first rail section, the fourth through groove is connected to the cavity of the second rail section, and a plurality of horizontal limit holes are opened on the side wall of the second rail section opposite to the fourth through groove. The limit member includes a limit rod, which is horizontally inserted in the slider, and the axial direction of the limit rod is parallel to the center line of the limit hole. The slider is hollow, and the limit pin is placed in the cavity of the slider and is sleeved with a back plate, which is fixedly connected to the limit pin. The limit pin is placed in the cavity of the slider and is sleeved with a third spring, one end of the third spring is fixedly connected to the back plate, and the other end is fixedly connected to the inner wall of the slider.
[0012] Preferably, the lower end of the second rail segment is connected to a base plate, and a position mark is provided on the upper surface of the base plate below the guide rail, and the position mark is located directly below the center line of the first rail segment.
[0013] Preferably, the lower end of the second rail section is connected to the base plate via a telescopic cylinder for adjusting the height of the guide rail so that the center line of the first rail section is flush with the height of the active joint of the trainer's shoulder.
[0014] Preferably, a soft silicone layer is arranged in the concave cavity of the barrier arm plate.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the first rail section and the second rail section included in the guide rail are fixed by welding, and the combination of the two is in a "J" shape, wherein the second rail section supports the first rail section, and the arc radius of the first rail section is smaller than the average arm length of the trainee, wherein the movable rod can slide along the first through groove of the first rail section in an arc-shaped path trajectory, wherein the parts extending at both ends of the movable rod are used to hold up the arms of the trainee, and the trainee puts both hands or wrists on the movable rod during training, wherein the first spring is a tension spring, which can achieve a tensioning effect, and when the movable rod is located on the first rail section and away from the end of the second rail section, the first spring is in a tensioned state, and when the trainee's arms release force, the first spring can rely on the elastic reset effect of the first spring, and the first spring drives the movable rod to move in an arc-shaped trajectory around the first rail section toward the direction close to the second rail section, thereby assisting in driving the trainee's arms to swing backward clockwise, and the trainee only needs to It is necessary to provide an impedance force equal to the tensile force of the first spring, so that the movable rod can be controlled not to be deflected by the influence of the first spring. During training, the trainee can gradually reduce the impedance force applied by the arm to the movable rod according to his own situation, so that the movable rod drives the trainee's arms to rotate backward, thereby realizing gentle stretching training of the trainee's ligaments, avoiding the inappropriate pain caused by the inertia force applied by the trainee's arms at the same time, causing the trainee's attention to be shifted, making it difficult to perform standard stretching movements, and affecting the stretching effect of the shoulder ligaments, so that the trainee can focus more on the movement norms of the limbs, reducing the pain of training and achieving better training effect. When the trainee's arms are driven to rotate and swing backward, the arm stop plate can achieve the effect of limiting the joints of the trainee's arms to avoid bending at the joints of the forearm and the upper arm, further ensuring the standardization of the movement, thereby making the shoulder ligament stretching training effect better.
[0016] In summary, compared with existing trainers, this trainer can assist the trainee in stretching the shoulder and back ligaments while greatly reducing the pain of training, so that the trainee's movements during training are more standardized, thereby comprehensively improving the training effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1A schematic structural diagram of a sports dance shoulder control trainer provided by an embodiment of the present invention in a left-side viewing state;
[0018] Figure 2 A schematic structural diagram of a sports dance shoulder control trainer provided by an embodiment of the present invention;
[0019] Figure 3 A partial structural schematic diagram of a sports dance shoulder control trainer provided by an embodiment of the present invention;
[0020] Figure 4 A schematic diagram of the structure of a sports dance shoulder control trainer from a front perspective provided by an embodiment of the present invention;
[0021] Figure 5 for Figure 1 A partial enlarged view of part A;
[0022] Figure 6 for Figure 1 A partial enlarged view of part B;
[0023] Figure 7 for Figure 3 A partial enlarged view of part C.
[0024] Description of reference numerals:
[0025] 1. Guide rail; 11. First rail section; 111. First through-groove; 112. Third through-groove; 12. Second rail section; 121. Second through-groove; 122. Fourth through-groove; 123. Limit hole; 2. Movable rod; 3. Arm plate; 4. Sliding block; 5. First spring; 6. Limit rod; 7. Sleeve; 8. Sliding rod; 9. Sliding sleeve; 10. First push rod; 20. Waist roller; 21. Second push rod; 22. Second spring; 23. Bushing; 24. Push plate; 25. Third spring; 26. Bottom plate; 27. Position mark; 28. Telescopic cylinder. DETAILED DESCRIPTION
[0026] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.
[0027] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.
[0028] refer to Figure 1 , Figure 2 and Figure 5 The present invention provides a sports dance shoulder control trainer, comprising: a guide rail 1, a movable rod 2, two arm-blocking plates 3, a slider 4, and a first spring 5. The guide rail 1 comprises a semicircular first rail section 11 and a second rail section 12 extending vertically. The arc concave surface of the first rail section 11 faces downward, and the upper end of the second rail section 12 is fixedly connected to one of the ends of the first rail section 11. The first rail section 11 and the second rail section 12 are both hollow inside. A first through groove 111 is opened in the middle of the side wall of the first rail section 11 along the extension direction of the center line, and a second through groove 111 is opened in the second rail section 12. There is a second through groove 121 which is in the same direction and continuous with the first through groove 111. The movable rod 2 is horizontally inserted in the first through groove 111. The movable rod is slidably connected to the guide rail 1. Two arm plates 3 are respectively connected to the two ends of the movable rod 2. The arm plates 3 extend away from the ends of the movable rod 2 toward the center line direction of the first rail section 11. The slider 4 is slidably connected in the first rail section 11. The height of the slider 4 is limited by a limiting piece. The first spring 5 is placed in the cavity of the guide rail 1. One end of the first spring 5 is fixedly connected to the movable rod 2, and the other end is fixedly connected to the upper end of the slider 4.
[0029] In the above embodiment, the guide rail 1 includes a first rail section 11 and a second rail section 12 which are fixed by welding, and the combination of the two is in a "J" shape, wherein the second rail section 12 supports the first rail section 11, and the arc radius of the first rail section 11 is smaller than the average arm length of the trainee, wherein the movable rod 2 is capable of sliding along the first through groove 111 of the first rail section 11 in an arc-shaped path trajectory, wherein the portions extending at both ends of the movable rod 2 are used to hold up the arms of the trainee, and the trainee places both hands or wrists on the movable rod 2 during training, wherein the first spring 5 is a tension spring which can achieve a tensioning effect, and when the movable rod 2 is located on the first rail section 11 and away from the end of the second rail section 12, the first spring 5 is in a tensioned state, and when the trainee's arms release force, the first spring 5 can rely on the elastic reset effect of the first spring 5, and the first spring 5 drives the movable rod 2 to move in an arc-shaped trajectory around the first rail section 11 toward the direction close to the second rail section 12, thereby assisting in driving the trainee's arms to rotate clockwise. When the trainee swings backward, the trainee only needs to provide an impedance force that is the same as the tensile force of the first spring 5 to control the movable rod 2 from being deflected by the influence of the first spring 5. During training, the trainee can gradually reduce the impedance force applied by the arm to the movable rod 2 according to his own situation, so that the movable rod 2 drives the trainee's arms to rotate backward, thereby realizing gentle stretching training of the trainee's ligaments, avoiding the inappropriate pain caused by the inertia force applied by the trainee's arms at the same time, causing the trainee's attention to be shifted, making it difficult to perform standard stretching movements, and affecting the stretching effect of the shoulder ligaments, so that the trainee can focus more on the movement norms of the limbs, reducing the pain of training and achieving better training effect. During the process of the trainee's arms being driven to rotate and swing backward, the arm stopper 3 can realize the effect of limiting the joints of the trainee's arms, so as to avoid bending at the joints of the forearm and the upper arm, further ensuring the standardization of the movement, thereby making the shoulder ligament stretching training effect better.
[0030] Further, refer to Figure 2 and Figure 3 The arm barrier plate 3 is semi-cylindrical, and the arc-shaped concave surfaces of the two arm barrier plates 3 are opposite to each other, which is used to limit the bending of the joints of the two arms.
[0031] In the above embodiments, the arm guard plate 3 is semi-cylindrical, ergonomically designed, and improves the position limitation of the arm. Preferably, a plurality of conventional straps may be provided on the arm guard plate 3 to limit the position of the trainee's arm so as to prevent the trainee's arm from falling off.
[0032] Further, refer to Figure 2 and Figure 3Taking into account that trainees with different shoulder widths have different requirements for the spacing length between the two arm guard plates 3, the two ends of the movable rod 2 are fixedly connected with a sleeve 7, and the sleeve 7 is horizontally slidably inserted with a sliding rod 8, and the sliding rod 8 is polygonal. The arm guard plate 3 is fixedly connected to the sliding rod 8, and a rubber layer is provided in the sleeve 7 to increase the resistance of the sliding rod 8 when it slides.
[0033] In the above embodiments, the sleeve 7 is provided to realize horizontal sliding of the sliding rod 8, so that the trainee can adjust the distance between the two arm plates 3 according to the situation, and the applicability is better. The inner wall of the sleeve 7 is provided with a rubber layer, which can increase the friction resistance of the sliding rod 8 when sliding, so as to ensure that the beneficial effect of sliding of the sliding rod 8 can be achieved only under the condition of external force.
[0034] Further, refer to Figure 2 , Figure 3 and Figure 5 Considering that the trainee needs to lean forward with his waist in the process of swinging his arms backward to effectively assist in stretching the shoulder ligaments, and the present trainer can only standardize the shoulder movements, which is not conducive to the use of beginners, a sliding sleeve 9 is fixedly connected to the downward concave arc surface of the first rail section 11 near the second rail section 12. The sliding sleeve 9 is arc-shaped and is concentric with the first rail section 11. A first push rod 10 with matching shape is slidably connected in the sliding sleeve 9. The lower end of the first push rod 10 is connected to a waist roller 20. Figure 7 As shown, the downward concave arc surface of the first rail section 11 is provided with a third through groove 112 connected to the central cavity thereof, the third through groove 112 penetrates the sliding sleeve 9, the movable rod 2 is fixedly connected with an arc-shaped second support rod 21, the end of the second support rod 21 slides in the sliding sleeve 9, and a second spring 22 is connected between the first support rod 10 and the second support rod 21.
[0035] In the above embodiments, the sliding sleeve 9 is provided to realize the sliding displacement of the first support rod 10 and the second support rod 21 in an arc-shaped trajectory inside thereof. Specifically, as the trainee raises his arms to the top of his head, the waist roller 20 connected to the first support rod 10 will be close to the trainee's waist. As the trainee's arms continue to rotate backward, the waist roller 20 will resist the trainee's waist and assist the trainee to complete the movement of bending and leaning forward at the waist, so that the training movement is more standardized and conducive to the stretching of the ligaments. The second spring 22 provided can play a buffering effect on the waist roller 20 to prevent the trainee's arms from rotating excessively backwards. The waist roller 20 Applying too much force to the trainee's waist will cause the standard movement to be disrupted. At the same time, the second spring 22 can connect the first push rod 10 and the second push rod 21. When the trainee applies resistance force to rotate the movable rod 2 forward to the initial position to prepare for secondary training, the second push rod 21 can pull the first push rod 10 and the waist support roller 20 to reset in the direction close to the sliding sleeve 9. At the same time, when the beginner's arms are passed over the top of the head and it is difficult to support the reaction force, the trainee can also rely on the support of the waist support roller 20 to evenly distribute the reset elastic force of the first spring 5, which has a protective effect on the arms and protects the ligaments of the arms during stretching.
[0036] Further, refer to Figure 3 and Figure 4 The movable rod 2 is located on both sides of the guide rail 1 and is rotatably sleeved with a shaft sleeve 23, and a soft layer is arranged on the outside of the shaft sleeve 23.
[0037] In the above embodiments, by providing the shaft sleeve 23 and the soft layer, the comfort can be improved by the relative rotation of the shaft sleeve 23 and the movable rod 2 during the backward rotation of the trainee's arm, thereby avoiding the large friction during the rotation process when the trainee is in direct contact with the movable rod 2 and reducing the training comfort.
[0038] Further, refer to Figure 4 , Figure 5 and Figure 6 A fourth through groove 122 is horizontally opened on the side wall of the second rail section 12 close to the first rail section 11, and the fourth through groove 122 is communicated with the cavity of the second rail section 12. A plurality of horizontal limiting holes 123 are penetrated and opened on the side wall of the second rail section 12 opposite to the fourth through groove 122. The limiting member includes a limiting rod 6, and the limiting rod 6 is horizontally inserted in the slider 4. The axial direction of the limiting rod 6 is parallel to the center line of the limiting hole 123. The slider 4 is hollow, and the limiting pin is placed in the cavity of the slider 4 and is sleeved with a back plate 24. The back plate 24 is fixedly connected to the limiting pin. The limiting pin is placed in the cavity of the slider 4 and is sleeved with a third spring 25. One end of the third spring 25 is fixedly connected to the back plate 24, and the other end is fixedly connected to the inner wall of the slider 4.
[0039] In the above embodiments, when it is necessary to adjust the stretching force of training, the limit pin is pulled to make the limit pin disengage from the limit hole 123. At this time, the slider 4 can slide up and down along the cavity of the second rail segment 12. When the beginner needs to reduce a smaller stretching force, the slider 4 is controlled to slide upward in the second rail segment 12 and adjacent to the first rail segment 11. At this time, when the trainee controls the movable rod 2 to move forward, the first spring 5 is relatively easier to be stretched. Similarly, the pulling force acting on the movable rod 2 is relatively reduced. When the trainee needs to increase the stretching force, he only needs to operate as above to control the slider 4 to move downward in the height of the second rail segment 12, which is more applicable.
[0040] Further, refer to Figure 2 The lower end of the second rail segment 12 is connected to a bottom plate 26 , and a position mark 27 is provided on the upper surface of the bottom plate 26 below the guide rail 1 . The position mark 27 is located directly below the center line of the first rail segment 11 .
[0041] In the above embodiments, the standing position mark 27 can assist the trainee to stand in a suitable position, and try to ensure that the trainee's upper arm rotation joint coincides with the center line of the first track segment 11.
[0042] Further, refer to Figure 1 Taking into account the different heights of trainees, the lower end of the second rail section 12 is connected to the base plate 26 through a telescopic cylinder 28, which is used to adjust the height of the guide rail 1 so that the center line of the first rail section 11 is flush with the height of the active joint of the trainee's shoulder.
[0043] Further, refer to Figure 3 A soft silicone layer is arranged in the concave cavity of the arm plate 3.
[0044] The above embodiments are used to improve the comfort of the trainee's arms.
[0045] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A sports dance shoulder control trainer, characterized in that: include: The guide rail (1) comprises a first rail section (11) in a semicircular shape and a second rail section (12) extending vertically, the arc concave surface of the first rail section (11) faces downward, the upper end of the second rail section (12) is fixedly connected to one end of the first rail section (11), the interiors of the first rail section (11) and the second rail section (12) are both hollow, a first through groove (111) is provided in the middle of the side wall of the first rail section (11) along the extension direction of the center line, and the second rail section (12) is provided with a second through groove (121) which is in the same direction as and continuous with the first through groove (111); A movable rod (2) is horizontally inserted into the first through groove (111), and the movable rod is slidably connected to the guide rail (1); Two arm plates (3) are respectively connected to the two ends of the movable rod (2), and the end of the arm plate (3) away from the movable rod (2) extends toward the center line direction of the first rail section (11); A slider (4) slides in the first rail section (11), and the slider (4) is limited in height by a limiting member; A first spring (5) is placed in the cavity of the guide rail (1); one end of the first spring (5) is fixedly connected to the movable rod (2), and the other end of the first spring (5) is fixedly connected to the upper end of the slider (4).
2. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: The arm-blocking plate (3) is semi-cylindrical, and the arc-shaped concave surfaces of the two arm-blocking plates (3) are opposite to each other, so as to limit the bending of the joints of the two arms.
3. A sports dance shoulder control trainer as claimed in claim 2, characterized in that: Both ends of the movable rod (2) are fixedly connected to a sleeve (7), and a sliding rod (8) is inserted into the sleeve (7) for horizontal sliding. The sliding rod (8) is polygonal, and the arm plate (3) is fixedly connected to the sliding rod (8). A rubber layer is provided inside the sleeve (7) for increasing the resistance of the sliding rod (8) when sliding.
4. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: A sliding sleeve (9) is fixedly connected to the downward concave arc surface of the first rail section (11) near the second rail section (12); the sliding sleeve (9) is arc-shaped and is concentric with the first rail section (11); a first push rod (10) of matching shape is slidably connected inside the sliding sleeve (9); a waist roller (20) is connected to the lower end of the first push rod (10); a third through groove (112) connected to the central cavity of the first rail section (11) is formed on the downward concave arc surface of the first rail section (11); the third through groove (112) passes through the sliding sleeve (9); the movable rod (2) is fixedly connected to an arc-shaped second push rod (21); the end of the second push rod (21) slides inside the sliding sleeve (9); a second spring (22) is connected between the first push rod (10) and the second push rod (21).
5. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: The movable rod (2) is located on both sides of the guide rail (1) and is rotatably sleeved with shaft sleeves (23), and a soft layer is provided on the outside of the shaft sleeves (23).
6. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: The side wall of the second rail section (12) close to the first rail section (11) is horizontally provided with a fourth through slot (122), the fourth through slot (122 is communicated with the cavity of the second rail section (12), the side wall of the second rail section (12) opposite to the fourth through slot (122) is penetrated with a plurality of horizontal limiting holes (123), the limiting member comprises a limiting rod (6), the limiting rod (6) is horizontally inserted in the slider (4), the axial direction of the limiting rod (6) is parallel to the center line of the limiting hole (123), the slider (4) is hollow, the limiting pin is arranged in the cavity of the slider (4) and is sleeved with a stop plate (24), the stop plate (24) is fixedly connected to the limiting pin, the limiting pin is arranged in the cavity of the slider (4) and is sleeved with a third spring (25), one end of the third spring (25) is fixedly connected to the stop plate (24), and the other end is fixedly connected to the inner wall of the slider (4).
7. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: The lower end of the second rail section (12) is connected to a base plate (26), and the upper surface of the base plate (26) is provided with a station mark (27) below the guide rail (1), and the station mark (27) is located directly below the center line of the first rail section (11).
8. A sports dance shoulder control trainer as claimed in claim 7, characterized in that: The lower end of the second rail section (12) is connected to the base plate (26) via a telescopic cylinder (28) for adjusting the height of the guide rail (1) so that the center line of the first rail section (11) is flush with the height of the active joint of the trainer's shoulder.
9. A sports dance shoulder control trainer as claimed in claim 1, characterized in that: A soft silica gel layer is arranged in the concave cavity of the barrier arm plate (3).