Hip opening assist device for dance training

Abstract

According to the crotch opening assist device for dance training, a transmission assembly drives a crotch opening rotating rod, and when the crotch opening assist device is used, the transmission assembly drives the crotch opening rotating rod to drive two leg pads to move in the opposite directions, and the two legs of a student are driven to be separated for crotch opening exercise; according to the device, a trainee can independently perform crotch opening exercise according to the self bearing degree; through the arrangement that the telescopic sleeve is arranged at the end of the crotch opening rotating rod in a sliding mode, when the position of the leg pad needs to be adjusted, the telescopic sleeve is pulled outwards, so that the leg pad on the telescopic sleeve and the limiting pad are adjusted to the position suitable for the leg length of a student, a fastening bolt is screwed, and the device can be properly adjusted according to the leg length of a user; through the arrangement of the supporting vertical cylinder and the locking rod slidably arranged in the supporting vertical cylinder, when the crotch opening angle is too large, the locking rod is lifted and pulled to slide upwards, the lower end of the locking rod is pulled out of the locking cylinder, the supporting vertical cylinder can rotate, and the limiting pad can instantly relieve the limitation on the legs of the student.

Description

Technical Field

[0001] This application relates to the field of dance training equipment technology, and more specifically to a hip-opening aid for dance training. Background Technology

[0002] Hip opening exercises are an indispensable and crucial part of flexibility training in dance, playing a key role in improving dancers' performance and aesthetic appeal. However, current hip opening training methods have several problems that limit the training effectiveness for dancers. Currently, most dancers rely on assistants when performing hip opening and pressing exercises. However, improper force application by assistants can lead to muscle strains, posing a safety hazard to dancers. Secondly, some existing hip opening devices lack adjustability, failing to adapt to the user's leg length, which reduces the device's practicality and applicability. Furthermore, the limiting pads that restrict the user's legs in existing hip opening devices are usually fixed structures. When a dancer opens their hips beyond their capacity, the slow opening and closing speed of current devices prevents the dancer from quickly adjusting the opening angle using the device's transmission mechanism. The fixed limiting pads then subject the dancer's legs to significant force in a short period, potentially causing muscle strains. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this application is to provide a hip-opening assistive device for dance training, so as to solve the problems mentioned in the background art.

[0004] According to one aspect of this application, a hip-opening aid for dance training includes a support base, a transmission assembly, hip-opening rotating rods, a telescopic sleeve, a support cylinder, and a locking rod. A seat cushion is fixedly mounted on the top of the support base, and a backrest is fixedly mounted on the rear end of the support base, with the backrest located on one side of the seat cushion and the two arranged at an obtuse angle. A transmission assembly is located at the front end of the support base, and the transmission assembly is connected to two symmetrically arranged hip-opening rotating rods. The transmission assembly can drive the two symmetrically arranged hip-opening rotating rods to rotate horizontally in opposite directions. A telescopic sleeve is fitted onto the outer side of the end of each hip-opening rotating rod furthest from the transmission assembly. The inner wall of the telescopic sleeve... Each telescopic sleeve is slidably connected to the outer wall of the end of the hip-opening rotating rod. A support leg is vertically fixed at the bottom of each telescopic sleeve. A moving wheel is rotatably provided at the lower end of each support leg. A leg pad is fixedly provided at the top of each telescopic sleeve. A support cylinder is rotatably provided on the opposite sides of the two telescopic sleeves. A sliding cavity is provided through the support cylinder along its axial direction. A locking rod is slidably provided in the sliding cavity. The upper and lower ends of the locking rod pass through the upper and lower ends of the support cylinder, respectively. The lower end of the locking rod can be inserted into a locking cylinder fixedly provided on one side of the telescopic sleeve. A limiting pad is fixedly provided on the side of the support cylinder facing the leg pad. The limiting pad is perpendicular to the leg pad.

[0005] Preferably, the transmission assembly includes a transmission box, a base plate, a rotating shaft, a lead screw, a threaded sleeve, and a connecting rod. The front end of the support base is fixedly connected to the transmission box. A rotating shaft is provided through the top of the transmission box. The rotating shaft and the transmission box are rotatably connected by a bearing. A rotating disk is fixedly provided at the upper end of the rotating shaft, and a rotating handle is provided on the rotating disk. The lower end of the rotating shaft is located inside the transmission box and is fixedly connected to the driving bevel gear. A lead screw is provided through the side of the transmission box near the seat cushion. One end of the lead screw located inside the transmission box is fixedly connected to the driven bevel gear. The driven bevel gear and the driven bevel gear are connected to the driven bevel gear. The active bevel gear meshing transmission connection is described above. One side of the bottom of the transmission box is fixedly connected to one end of the base plate. The base plate is located below the lead screw. One end of the lead screw is rotatably connected to the transmission box through a bearing. The other end of the lead screw is connected to the other end of the base plate through a support seat. A threaded sleeve is fitted on the lead screw. Two symmetrically arranged hip-opening rotating rods are respectively distributed on both sides of the threaded sleeve. The two sides of the threaded sleeve are respectively hinged to one end of two connecting rods. The other ends of the two connecting rods are hinged to the hip-opening rotating rods on the same side. Each hip-opening rotating rod is rotatably mounted on the base plate.

[0006] Preferably, the connecting rod and the end of the hip-opening rotating rod away from the telescopic sleeve are hinged to form a connecting hinge point, and the body of the hip-opening rotating rod is rotatably connected to the base plate to form a rotating connection point. The rotating connection point is located between the connecting hinge point and the other end of the hip-opening rotating rod, and the distance between the connecting hinge point and the rotating connection point is less than the distance between the other end of the hip-opening rotating rod and the rotating connection point.

[0007] Preferably, a rotating support is fixedly provided at the lower end of the supporting cylinder, and the sliding cavity passes through the rotating support. The rotating support is rotatably connected to a fixed seat fixedly provided on the outer side of the telescopic sleeve. The locking cylinder is fixedly provided on the outer side of the telescopic sleeve at a position between the rotating supports. The inner cavity of the locking cylinder is positioned opposite the sliding cavity. The lower end of the locking rod can slide through the rotating support and be inserted into the locking cylinder.

[0008] Preferably, the length and width of the sliding cavity are greater than the length and width of the inner cavity of the locking cylinder, and the shape and size of the lower end of the locking rod are adapted to the shape and size of the inner cavity of the locking cylinder, and the shape and size of the locking rod body are adapted to the shape and size of the sliding cavity.

[0009] Preferably, a lifting head is fixedly provided at the upper end of the locking rod.

[0010] Preferably, a limiting plate is vertically fixed on the side of the rotating support away from the telescopic sleeve, and the lower end of the limiting plate extends vertically to the bottom of the telescopic sleeve. When the supporting cylinder rotates to a horizontal state through the rotating support, the limiting plate abuts against the bottom surface of the telescopic sleeve.

[0011] Preferably, the telescopic sleeve has a threaded hole through its outer wall at the opening position, and a fastening bolt is threaded into the threaded hole.

[0012] Preferably, the upper surface of the leg pad is flush with the upper surface of the seat cushion.

[0013] The advantages of this application compared to existing technologies are as follows: This application provides a hip-opening assistive device for dance training. Through a transmission component, the hip-opening rotating rod and leg pads are driven. When the student uses this device for hip opening, they sit on the seat cushion with their back against the backrest, placing their legs on two symmetrically arranged leg pads and side-mounted limiting pads. The student then rotates the handle to rotate the rotating disc, causing the rotating shaft to rotate, which in turn rotates the driving bevel gear. The meshing of the driving and driven bevel gears drives the lead screw to rotate, causing the threaded sleeve to move along the lead screw. This causes the threaded sleeve to pull the connecting rods on both sides, which in turn pull the hip-opening rotating rod to rotate around the rotating connection point on the base plate. This causes the two symmetrically arranged leg pads and limiting pads to move in opposite directions, thus opening the student's legs for hip opening exercises. This hip-opening assistive device allows students to perform hip opening exercises individually according to their own tolerance, avoiding excessive force from the assistant and potential muscle strain. The device also features a telescopic sleeve that slides at the end of the hip-opening rotating rod. This design allows for adjustments to the leg pads to accommodate the student's leg length. Loosening the bolts on the outer wall of the telescopic sleeve and pulling it outwards along the hip-opening movement rod adjusts the leg pads and limiting pads to the appropriate position. Tightening the bolts then secures the telescopic sleeve to the hip-opening rotating rod, enabling the device to be adjusted according to the user's leg length, thus improving its practicality and applicability. The locking rod, slidably mounted inside the support cylinder, initially slides downwards along the sliding cavity within the support cylinder, inserting its lower end into the locking cylinder. This locks the support cylinder vertically. When the student uses the hip-opening aid to open their hips too wide, pulling the upper end of the locking rod causes it to slide upwards, pulling the lower end out of the locking cylinder. This releases the support cylinder, allowing it to rotate and instantly release the limiting pads from the student's legs, preventing muscle strain. Attached Figure Description

[0014] Figure 1 This is a perspective view of a hip-opening aid for dance training according to an embodiment of this application.

[0015] Figure 2 This is a side sectional view of the transmission component of a hip-opening aid for dance training according to an embodiment of this application.

[0016] Figure 3 This is a top sectional view of the transmission component of a hip-opening aid for dance training according to an embodiment of this application.

[0017] Figure 4 This is an exploded view of the telescopic sleeve of a hip-opening aid for dance training according to an embodiment of this application.

[0018] Figure 5 This is a partial cross-sectional view of the support cylinder of a hip-opening aid for dance training according to an embodiment of this application.

[0019] Figure 6 This is a perspective view of the support cylinder of a hip-opening aid for dance training according to an embodiment of this application after rotation.

[0020] Figure 7 This is a perspective view of a hip-opening aid for dance training according to an embodiment of this application.

[0021] Reference numerals: 1. Support base frame; 2. Transmission assembly; 201. Transmission box; 202. Base plate; 203. Rotating shaft; 204. Lead screw; 205. Threaded sleeve; 206. Connecting rod; 207. Rotating disk; 208. Driving bevel gear; 209. Driven bevel gear; 3. Opening rotation rod; 4. Telescopic sleeve; 5. Supporting upright; 6. Locking rod; 7. Seat cushion; 8. Backrest; 9. Support leg; 10. Moving wheel; 11. Leg pad; 12. Sliding cavity; 13. Locking cylinder; 14. Limiting pad; 15. Connecting hinge point; 16. Rotating connection point; 17. Rotating support; 18. Fixed seat; 19. Lifting head; 20. Limiting plate; 21. Fastening bolt. Detailed Implementation

[0022] To make the content of this application easier to understand, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the accompanying drawings. Figure 1 In the context of direction, the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figures 1 to 7As shown, a hip-opening aid for dance training includes a support base 1, a transmission assembly 2, hip-opening rotating rods 3, a telescopic sleeve 4, a support upright 5, and a locking rod 6. A seat cushion 7 is fixedly mounted on the top of the support base 1, and a backrest 8 is fixedly mounted on the rear end of the support base 1. The backrest 8 is located on one side of the seat cushion 7, and the two are set at an obtuse angle to facilitate the user's backrest. The transmission assembly 2 is located at the front end of the support base 1. The transmission assembly 2 is connected to two symmetrically arranged hip-opening rotating rods 3. The transmission assembly 2 can drive the two symmetrically arranged hip-opening rotating rods 3 to rotate horizontally in opposite directions. A telescopic sleeve 4 is fitted on the outer side of the end of each hip-opening rotating rod 3 away from the transmission assembly 2. The inner wall of the telescopic sleeve 4 is flush with the end of the hip-opening rotating rod 3. The outer wall of the telescopic sleeve 4 is slidably connected, and a threaded hole is opened through the outer wall at its opening position. A fastening bolt 21 is threaded into the threaded hole. This setting allows the length of the telescopic sleeve 4 to be adjusted and locked according to the user's leg length. Each telescopic sleeve 4 has a support leg 9 vertically fixed at its bottom. The lower end of the support leg 9 is rotatably equipped with a movable wheel 10 to facilitate the movement of the hip-opening rotating rod 3 and the telescopic sleeve 4 during the hip-opening process. Each telescopic sleeve 4 has a leg pad 11 fixed at its top. The upper surface of the leg pad 11 is flush with the upper surface of the seat cushion 7 so that the user's legs and buttocks are at the same horizontal position when opening the hips. Fixed seats 18 are fixed on the opposite sides of the two telescopic sleeves 4. Each fixed seat 18 has a fixed seat 18. A rotating support 17 is provided for each support cylinder 5, and the rotating support 17 is fixedly connected to the lower end of the support cylinder 5. A sliding cavity 12 is provided through the support cylinder 5 along its axial direction, and the sliding cavity 12 passes through the rotating support 17. A locking rod 6 is slidably provided in the sliding cavity 12, and the upper and lower ends of the locking rod 6 pass through the upper and lower ends of the support cylinder 5, respectively. A locking cylinder 13 is fixedly provided on the outer side of the telescopic sleeve 4 at a position between the rotating supports 17. The inner cavity of the locking cylinder 13 is set directly opposite the sliding cavity 12. The lower end of the locking rod 6 can slide through the rotating support 17 and be inserted into the locking cylinder 13. A lifting head 19 is fixedly provided on the upper end of the locking rod 6 to facilitate lifting the locking rod 6. A limiting pad 1 is fixedly provided on the side of the support cylinder 5 facing the leg pad 11. 4. The limiting pad 14 and the leg pad 11 are set vertically. In this design, through the setting of the supporting cylinder 5 and the locking rod 6 slidably set inside it, initially, the locking rod 6 slides down along the sliding cavity 12 inside the supporting cylinder 5 and inserts its lower end into the locking cylinder 13, so that the locking rod 6 can fix the supporting cylinder 5 and lock it in a vertical state. When the student uses the hip opening assist device to open the hip angle too much, the student pulls the lifting head 19 at the upper end of the locking rod 6 to drive the locking rod 6 to slide upward, so that the lower end of the locking rod 6 is pulled out of the locking cylinder 13, so that the supporting cylinder 5 is unlocked and can rotate, so that the limiting pad 14 can instantly release the restriction on the student's legs, thereby avoiding muscle strain.Furthermore, the telescopic sleeve 4, slidably positioned at the end of the hip-opening rotating rod 3, allows for easy adjustment of the leg pad 11 to suit the student's leg length. Simply loosen the fastening bolt 21 on the outer wall of the telescopic sleeve 4, then pull the telescopic sleeve 4 outwards along the hip-opening moving rod axis. This adjusts the leg pad 11 and the limiting pad 14 on the telescopic sleeve 4 to the appropriate position for the student's leg length. Finally, tightening the fastening bolt 21 secures the telescopic sleeve 4 to the hip-opening rotating rod 3. This allows the device to be adjusted appropriately according to the user's leg length, improving its practicality and applicability.

[0024] In one embodiment, combined Figures 1-3 and Figure 7The transmission assembly 2 includes a transmission box 201, a base plate 202, a rotating shaft 203, a lead screw 204, a threaded sleeve 205, and a connecting rod 206. The front end of the support base 1 is fixedly connected to the transmission box 201. The rotating shaft 203 is installed through the top of the transmission box 201. The rotating shaft 203 is rotatably connected to the transmission box 201 via a bearing. A rotating disk 207 is fixedly installed at the upper end of the rotating shaft 203, and a rotating handle is provided on the rotating disk 207. The lower end of the rotating shaft 203 is located inside the transmission box 201 and is fixedly connected to the driving bevel gear 208. A lead screw 204 is installed through the side of the transmission box 201 near the seat cushion 7. One end of the lead screw 204 located inside the transmission box 201 is fixedly connected to the driven bevel gear 209. 09 is connected to the active bevel gear 208 for transmission. One side of the bottom of the transmission box 201 is fixedly connected to one end of the base plate 202. The base plate 202 is located below the lead screw 204. One end of the lead screw 204 is rotatably connected to the transmission box 201 through a bearing. The other end of the lead screw 204 is connected to the other end of the base plate 202 through a support seat. A threaded sleeve 205 is fitted on the lead screw 204. Two symmetrically arranged hip-opening rotating rods 3 are respectively distributed on both sides of the threaded sleeve 205. The two sides of the threaded sleeve 205 are respectively hinged to one end of two connecting rods 206. The other ends of the two connecting rods are hinged to the hip-opening rotating rods 3 on the same side. Each hip-opening rotating rod 3 is rotatably mounted on the base plate 202. Specifically, the connecting rods 206 and the hip-opening rotating rods 206 are connected to the hip-opening rotating rods 206. The end of the lever 3 furthest from the telescopic sleeve 4 is hinged to form a linkage hinge point 15. The hip-opening rotating lever 3 is rotatably connected to the base plate 202 to form a rotation connection point 16, which is located directly below the seat cushion 7. This ensures that when opening the hips, the user's upper thigh corresponds to the position of the rotation connection point 16, facilitating hip-opening exercises. The rotation connection point 16 is located between the linkage hinge point 15 and the other end of the hip-opening rotating lever 3, and the distance between the linkage hinge point 15 and the rotation connection point 16 is less than the distance between the other end of the hip-opening rotating lever 3 and the rotation connection point 16. In this design, the hip-opening rotating lever 3 and the leg pad 11 are driven by the transmission component 2, so that when the student uses this hip-opening aid for hip opening, the student sits on the seat cushion. 7. The student sits on the backrest 8 and places their legs on the two symmetrically arranged leg pads 11, with their sides against the limiting pads 14. The student then rotates the handle to rotate the rotating disc 207, which in turn rotates the rotating shaft 203, thereby rotating the driving bevel gear 208. The meshing transmission between the driving bevel gear 208 and the driven bevel gear 209 drives the lead screw 204 to rotate, causing the threaded sleeve 205 to move along the lead screw. This causes the threaded sleeve 205 to pull the connecting rods 206 on both sides, which in turn pull the hip-opening rotating rod 3 to rotate around the rotating connection point 16 on the base plate 202. This causes the two symmetrically arranged leg pads 11 and the limiting pads 14 to move in opposite directions, thus causing the student's legs to separate and perform hip-opening exercises (e.g., ...). Figure 7As shown in the image, this hip-opening aid allows trainees to perform hip-opening exercises independently according to their own tolerance level, avoiding muscle strain caused by excessive force from the assistant.

[0025] In one embodiment, refer to Figure 5 The length and width of the sliding cavity 12 are greater than the length and width of the inner cavity of the locking cylinder 13, and the shape and size of the lower end of the locking rod 6 are adapted to the shape and size of the inner cavity of the locking cylinder 13. The shape and size of the rod body of the locking rod 6 are adapted to the shape and size of the sliding cavity 12. In this design, when the lower end of the locking rod 6 is inserted into the locking cylinder 13, the locking rod 6 can be blocked by the upper end of the locking cylinder 13 to prevent the locking rod 6 from continuing to slide down, so that the locking cylinder 13 plays a limiting role on the locking rod 6.

[0026] In one embodiment, combined Figure 6 A limiting plate 20 is vertically fixed on the side of the rotating support 17 away from the telescopic sleeve 4. The lower end of the limiting plate 20 extends vertically to the bottom of the telescopic sleeve 4. When the supporting cylinder 5 is rotated to a horizontal state by the rotating support 17, the limiting plate 20 abuts against the bottom surface of the telescopic sleeve 4 to prevent the supporting cylinder 5 from continuing to drive the limiting pad 14 to rotate downward. This design can prevent the supporting cylinder 5 from rotating to collide with the ground after being unlocked and causing damage.

[0027] Working principle: When the student uses this hip-opening aid to open their hips, they sit on the seat cushion 7 with their back against the backrest 8, then place their legs on the two symmetrically arranged leg pads 11 and sideways against the limiting pad 14. The student then rotates the handle to rotate the rotating disc 207, causing the rotating shaft 203 to rotate, which in turn rotates the driving bevel gear 208. The meshing of the driving bevel gear 208 and the driven bevel gear 209 then drives the lead screw 204 to rotate, causing the threaded sleeve 205 to move along the lead screw. This causes the threaded sleeve 205 to pull the connecting rods 206 on both sides, which in turn pull the hip-opening rotating rod 3 to rotate around the rotating connection point 16 on the base plate 202. This causes the two symmetrically arranged leg pads 11 and the limiting pad 14 to move in opposite directions, thus opening the student's legs and performing hip-opening exercises (e.g., ...). Figure 7 As shown), this hip-opening aid allows trainees to perform hip-opening exercises individually according to their own tolerance level; in addition, by rotating the rotating disc 207 in the opposite direction, the two symmetrically arranged hip-opening rotating rods 3 can be driven to move the leg pads 11 and the limiting pads 14 toward each other, thus ending the hip-opening exercise.

[0028] When a student uses the hip-opening aid to open their hips too wide, they can pull the upper end of the locking rod 6 by lifting the lifting head 19, causing the locking rod 6 to slide upwards. This pulls the lower end of the locking rod 6 out of the locking cylinder 13, releasing the support cylinder 5 from its locked state and allowing it to rotate. Consequently, the limiting pad 14 can instantly release its restriction on the student's legs, thus preventing muscle strain.

[0029] The above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, without departing from the spirit and scope defined by the claims of this application.

Claims

1. A hip-opening aid for dance training, comprising a support base (1), a transmission assembly (2), a hip-opening rotating rod (3), a telescopic sleeve (4), a support upright (5), and a locking rod (6), characterized in that, A seat cushion (7) is fixedly provided on the top of the support base (1), and a backrest (8) is fixedly provided at the tail end of the support base (1). The backrest (8) is located on one side of the seat cushion (7) and the two are set at an obtuse angle. A transmission assembly (2) is provided at the front end of the support base (1). The transmission assembly (2) is connected to two symmetrically arranged hip-opening rotating rods (3). The transmission assembly (2) can drive the two symmetrically arranged hip-opening rotating rods (3) to rotate horizontally in opposite directions. A telescopic sleeve (4) is sleeved on the outer side of the end of each hip-opening rotating rod (3) away from the transmission assembly (2). The inner side wall of the telescopic sleeve (4) is slidably connected to the outer side wall of the end of the hip-opening rotating rod (3). A support is vertically fixed at the bottom of each telescopic sleeve (4). The support leg (9) has a movable wheel (10) at its lower end. Each telescopic sleeve (4) has a leg pad (11) fixedly installed at its top. The two telescopic sleeves (4) have a support cylinder (5) rotatably installed on their opposite sides. A sliding cavity (12) is provided through the support cylinder (5) along its axial direction. A locking rod (6) is slidably installed in the sliding cavity (12). The upper and lower ends of the locking rod (6) pass through the upper and lower ends of the support cylinder (5) respectively. The lower end of the locking rod (6) can be inserted into a locking cylinder (13) fixedly installed on one side of the telescopic sleeve (4). A limiting pad (14) is fixedly installed on the side of the support cylinder (5) facing the leg pad (11). The limiting pad (14) is perpendicular to the leg pad (11).

2. The hip-opening aid for dance training according to claim 1, characterized in that, The transmission assembly (2) includes a transmission box (201), a base plate (202), a rotating shaft (203), a lead screw (204), a threaded sleeve (205), and a connecting rod (206). The front end of the support base (1) is fixedly connected to the transmission box (201). The rotating shaft (203) is provided through the top of the transmission box (201). The rotating shaft (203) is rotatably connected to the transmission box (201) through a bearing. A rotating disk (207) is fixedly provided at the upper end of the rotating shaft (203), and a rotating handle is provided on the rotating disk (207). The lower end of the rotating shaft (203) is located inside the transmission box (201) and is fixedly connected to the driving bevel gear (208). A lead screw (204) is provided through the side of the transmission box (201) near the seat cushion (7). One end of the lead screw (204) located inside the transmission box (201) is fixedly connected to the driven bevel gear (209). The driven bevel gear (209) meshes with the driving bevel gear (208) for transmission. The bottom side of the transmission box (201) is fixedly connected to one end of the base plate (202). The base plate (202) is located below the lead screw (204). One end of the lead screw (204) is rotatably connected to the transmission box (201) through a bearing. The other end of the lead screw (204) is connected to the other end of the base plate (202) through a support seat. A threaded sleeve (205) is fitted on the lead screw (204). Two symmetrically arranged hip-opening rotating rods (3) are respectively distributed on both sides of the threaded sleeve (205). The two sides of the threaded sleeve (205) are respectively hinged to one end of two connecting rods (206). The other ends of the two connecting rods (206) are hinged to the hip-opening rotating rods (3) on the same side. Each hip-opening rotating rod (3) is rotatably mounted on the base plate (202).

3. The hip-opening aid for dance training according to claim 2, characterized in that, The connecting rod (206) is hinged to the end of the hip-opening rotating rod (3) away from the telescopic sleeve (4) to form a connecting hinge point (15). The body of the hip-opening rotating rod (3) is rotatably connected to the base plate (202) to form a rotating connection point (16). The rotating connection point (16) is located directly below the seat cushion (7). The rotating connection point (16) is located between the connecting hinge point (15) and the other end of the hip-opening rotating rod (3). The distance between the connecting hinge point (15) and the rotating connection point (16) is less than the distance between the other end of the hip-opening rotating rod (3) and the rotating connection point (16).

4. The hip-opening aid for dance training according to claim 1, characterized in that, The lower end of the support cylinder (5) is fixedly provided with a rotating support (17), and the sliding cavity (12) passes through the rotating support (17). The rotating support (17) is rotatably connected to the fixed seat (18) fixedly provided on the outer side of the telescopic sleeve (4). The locking cylinder (13) is fixedly provided on the outer side of the telescopic sleeve (4) at a position between the rotating support (17). The inner cavity of the locking cylinder (13) is set directly opposite the sliding cavity (12). The lower end of the locking rod (6) can slide through the rotating support (17) and be inserted into the locking cylinder (13).

5. A hip-opening aid for dance training according to claim 4, characterized in that, The length and width of the sliding cavity (12) are greater than the length and width of the inner cavity of the locking cylinder (13), and the shape and size of the lower end of the locking rod (6) are adapted to the shape and size of the inner cavity of the locking cylinder (13), and the shape and size of the rod body of the locking rod (6) are adapted to the shape and size of the sliding cavity (12).

6. A hip-opening aid for dance training according to claim 4, characterized in that, The upper end of the locking rod (6) is fixedly provided with a lifting head (19).

7. A hip-opening aid for dance training according to claim 4, characterized in that, A limiting plate (20) is vertically fixed on the side of the rotating support (17) away from the telescopic sleeve (4). The lower end of the limiting plate (20) extends vertically to the bottom of the telescopic sleeve (4). When the supporting cylinder (5) rotates to a horizontal state through the rotating support (17), the limiting plate (20) abuts against the bottom surface of the telescopic sleeve (4).

8. A hip-opening aid for dance training according to claim 1, characterized in that, The telescopic sleeve (4) has a threaded hole through the outer wall at its opening position, and a fastening bolt (21) is threaded into the threaded hole.

9. A hip-opening aid for dance training according to claim 1, characterized in that, The upper surface of the leg pad (11) is flush with the upper surface of the seat pad (7).

Images