A lower limb strength training device for sports dancing

Abstract

The application discloses a lower limb strength training device for sports dancing and belongs to the technical field of physical exercise devices, which comprises a base, a seat on the base, a box arranged on the base, two pedal assemblies in sliding connection with the base, a connecting rod fixed between the two pedal assemblies, a first piston column arranged in the box and fixedly connected with the connecting rod at one end, L-shaped supporting columns symmetrically mounted on the base, an adjusting mechanism in sliding connection with the supporting columns, a cylinder fixedly arranged on the adjusting mechanism, a second piston column arranged in the cylinder, an arc-shaped supporting plate fixedly arranged at one end of the second piston column, and a bandage arranged at both ends of the supporting plate. The application can simultaneously strengthen the global muscle groups of the lower limbs, form a closed-loop power training of "stomping ground-bending knee-recovery", and perfectly meet the core requirements of "whole body coordination and precise control" in sports dancing.

Description

Technical Field

[0001] This invention relates to the field of sports exercise equipment technology, specifically to a lower limb strength training device for sports dance. Background Technology

[0002] As a specialized sport that integrates athletic competition and artistic expression, ballroom dancing places diverse demands on lower limb strength. It requires explosive power to support jumps and rotations, precise control to ensure balance and posture, and the coordinated exertion of multiple muscle groups to achieve the fluidity of dance movements. Therefore, specialized lower limb strength training devices have become key tools for dancers to improve their competitive level. Currently, most mainstream lower limb training devices on the market are simple elastic pedal components. Their core structure consists of a pedal and a spring directly connected. The working principle is that when the user pushes the pedal component forward, the spring is stretched by tension to generate resistance. When the lower limb is retracted, the spring returns to its original shape due to its own elasticity, thereby achieving basic resistance training.

[0003] However, such devices have obvious defects in actual use: On the one hand, they lack safety protection. When users exert uneven force, suddenly lose strength, or lose control of their movements during training, the spring's rebound force will act directly and without buffer on the lower limb joints and muscle groups. This is especially true for vulnerable parts of dancers' knees and ankles, which are frequently bent and stretched, easily causing impact injuries, muscle strains, joint strains, and other problems, seriously affecting training safety. On the other hand, their training function is limited. They can only strengthen a few muscle groups such as the quadriceps for lower limb extension movements, and cannot cover the diverse training needs of sports dance, such as hip linkage, calf explosive power, and ankle stability. This makes it difficult to achieve comprehensive improvement, resulting in a disconnect between training effects and actual dance scenarios, and failing to meet dancers' training demands for comprehensive lower limb abilities. Summary of the Invention

[0004] The purpose of this invention is to provide a lower limb strength training device for sports dance, which solves the following technical problems: existing training institutions have insufficient safety protection and limited training functions.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A lower limb strength training device for ballroom dance includes a base and a seat on the base. A housing is mounted on the base, and two pedal assemblies are slidably connected to the base. A connecting rod is fixed between the two pedal assemblies. A first piston column is disposed within the housing, with one end of the first piston column fixedly connected to the connecting rod. L-shaped support columns are symmetrically mounted on the base, and an adjustment mechanism is slidably connected to each support column. A cylinder is fixed to the adjustment mechanism, and a second piston column is disposed within the cylinder. An arc-shaped support plate is fixed to one end of the second piston column, and straps are provided at both ends of the support plate. A connecting pipe connects the cylinder and the housing, and a buffer solution is provided between the housing and the cylinder.

[0007] As a further aspect of the present invention: a positioning block is fixed on the support column, and the connecting pipe is located inside the positioning block.

[0008] As a further embodiment of the present invention: the adjustment mechanism includes a mounting rod slidably connected to the support column, a lead screw rotatably mounted on the mounting rod, a knob mounted on one end of the lead screw, a moving block threadedly connected to the lead screw, and the moving block being fixedly connected to the cylinder.

[0009] As a further embodiment of the present invention: the base is provided with symmetrical grooves, the pedal assembly includes a slider that is slidably disposed in the groove, a vertical rod is fixed on the slider, and a pedal is rotatably mounted on the top of the vertical rod.

[0010] As a further embodiment of the present invention: a spare cylinder is fixed to one side of the main cylinder, the spare cylinder having the same structure as the main cylinder, a branch pipe is connected to the top of the spare cylinder, and a solenoid valve is installed on the branch pipe, a touch switch is installed on one side wall of the box, the touch switch is electrically connected to the solenoid valve, and a triggering mechanism is provided on one side of the connecting rod.

[0011] As a further aspect of the present invention: the triggering mechanism includes an air pump fixed on the base, the piston rod of the air pump is fixedly connected to a connecting rod, the air outlet of the air pump is connected to an air outlet pipe, a third piston column is provided inside the air outlet pipe, and a trigger plate is connected to one end of the third piston column.

[0012] As a further aspect of the present invention: a spring is connected between the trigger plate and the housing, an air outlet is provided on the air outlet pipe, a magnetic component is provided on the side wall of the trigger plate near the housing, and an adsorption component is provided on the side wall of the housing near the trigger plate.

[0013] The beneficial effects of this invention are:

[0014] (1) In this invention, the pedal (foot-borne force) is linked to the housing through the first piston column, and the support plate (knee-borne force) is linked to the cylinder through the second piston column. When the lower limb is straight, the foot pushes and drives the buffer solution to be squeezed into the cylinder, which simultaneously drives the support plate at the knee to form resistance. When bending, the knee actively exerts force to squeeze the buffer solution back into the housing, and the foot pedal is lifted accordingly. This process can simultaneously activate the quadriceps, gluteus maximus, calf muscles and ankle stabilizing muscles, solving the limitation of traditional devices that "only train a single push-extension muscle group", and meeting the core requirement of "full-range lower limb force" in dance. The fluid flow of the buffer solution simulates the continuous force chain of "push-knee bend-swing" in dance. The force rhythm during training is highly consistent with the force logic of waltz rise and fall, Latin dance jump and other movements, realizing the direct connection between "strength training and dance skill improvement", and avoiding the disconnect between training effect and actual combat.

[0015] (2) This invention relies on the mechanism of "buffered fluid bidirectional compression transmission + lower limb flexion-driven recovery". The pedal recovery depends on the active flexion action of the lower limb, rather than the passive rebound force of the elastic element. Even if there is a sudden loss of strength during training, the viscous damping of the buffered fluid will keep the pedal in its current position, avoiding the impact of the "instant rebound" of the spring device on the fragile joints such as the knee and ankle, reducing the risk of muscle strain and joint damage from the root, and adapting to the training characteristics of dancers' high-frequency flexion and extension of the lower limbs. The buffered fluid replaces the traditional spring as the resistance medium, and the force transmission is linear and gradual. The force is stable when the lower limbs push and bend, without rigid abruptness, reducing the pressure on the knee cartilage and ligaments, which is especially suitable for the "slow extension and stable force" movement requirements in dance training;

[0016] (3) This invention can precisely control the resistance by changing the buffer solution of different viscosities or adjusting the piston stroke. Beginners can use low-viscosity buffer solution to lower the entry threshold, while professional dancers can use high-viscosity liquid to enhance explosive power. Latin dance training can increase resistance to improve jumping power, while ballroom dance training can decrease resistance to optimize the smoothness of the swing. The fluid flow damping of the buffer solution makes the movement speed of the pedal and the support plate controllable. Dancers can adjust the range and speed of their movements according to the rhythm of the dance (such as the fast force of the cha-cha and the slow extension of the rumba). During training, they can accurately feel the muscle force points and help form muscle memory. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the adjustment mechanism and cylinder of Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the pedal assembly according to Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the box and cylinder in Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0023] Figure 6 This is a schematic diagram of the air pump and housing in Embodiment 2 of the present invention;

[0024] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 This is a schematic diagram of the internal structure of the air outlet in Embodiment 2 of the present invention.

[0026] In the diagram: 1. Base; 2. Seat; 3. Box body; 4. Pedal assembly; 401. Slider; 402. Upright pole; 403. Pedal; 5. Connecting rod; 6. First piston column; 7. Support column; 8. Adjustment mechanism; 801. Mounting rod; 802. Lead screw; 803. Moving block; 9. Cylinder; 10. Connecting pipe; 11. Second piston column; 12. Support plate; 13. Strap; 14. Positioning block; 15. Spare cylinder; 16. Branch pipe; 17. Air pump; 18. Air outlet pipe; 19. Third piston column; 20. Trigger plate; 21. Touch switch; 22. Spring; 23. Air outlet; 24. Magnetic component; 25. Adsorption component.

[0027] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual size and shape of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1, please refer to Figures 1 to 4As shown, this invention is a lower limb strength training device for ballroom dancing, including a base 1 and a seat 2 located on the base 1. A housing 3 is provided on the base 1, and two pedal assemblies 4 are slidably connected to the base 1. A connecting rod 5 is fixed between the two pedal assemblies 4. A first piston column 6 is provided inside the housing 3, and one end of the first piston column 6 is fixedly connected to the connecting rod 5. L-shaped support columns 7 are symmetrically installed on the base 1, and an adjustment mechanism 8 is slidably connected to the support column 7. A cylinder 9 is fixed to the adjustment mechanism 8, and a second piston column 11 is provided inside the cylinder 9. An arc-shaped... The support plate 12 has straps 13 at both ends. A connecting pipe 10 connects the cylinder 9 and the box 3, and a buffer solution is placed between the box 3 and the cylinder 9. Before training, the user adjusts the height of the cylinder 9 using the adjustment mechanism 8 to meet the needs of different users. Then, the user sits on the seat 2 with both feet placed on the two pedal assemblies 4. At this time, the user's lower limbs are bent. The straps 13 are used to fix the two support plates 12 to the knees. After completing the preparation, training begins. The user's lower limbs gradually straighten, pushing the pedal assembly 4 to move, thereby causing the first piston column to move. 6. The buffer solution inside the chamber 3 is moved and squeezed. The resistance provided by the buffer solution ensures the training effect. The buffer solution enters the two cylinders 9 through the connecting tube 10 and pushes the second piston column 11 down. The adjusting mechanism 8 and the support column 7 are slidably connected and will not interfere with the movement of the knee. When the lower limb bends, the knee will squeeze the second piston column 11, squeezing the buffer solution in the cylinder 9 back into the chamber 3. The above process is repeated continuously to train the lower limbs. When the foot pushes the pedal assembly 4, the calf muscles actively contract and exert force, strengthening the explosive power of the ankle extension, which is suitable for Latin dance jumps and modern dance rises. The core requirement of the lowering mechanism is that the hamstring muscles actively contract when bending, squeezing the buffer back into the box 3, balancing the strength of the quadriceps, and avoiding knee valgus caused by muscle imbalance. It is adapted to the needs of knee bending and pose fixation in dance. Through the complete cycle of hydraulic linkage, it can simultaneously strengthen the entire muscle group of the lower limbs "front (quadriceps) - back (hamstrings) - buttocks - calf - ankle", forming a closed-loop power training of "push-knee bending - retraction", which perfectly matches the core requirements of "full body coordination and precise power control" in ballroom dance. It is worth mentioning that the position of seat 2 can be freely adjusted to improve the fit.

[0030] See Figure 1 A positioning block 14 is fixed on the support column 7, and the connecting pipe 10 is located inside the positioning block 14; the positioning block 14 is used to support the connecting pipe 10 to avoid problems such as entanglement of the connecting pipe 10 as it moves with the cylinder 9.

[0031] See Figure 1 and Figure 2The adjusting mechanism 8 includes a mounting rod 801 that is slidably connected to the support column 7. A lead screw 802 is rotatably mounted on the mounting rod 801. A knob is mounted on one end of the lead screw 802. A moving block 803 is threadedly connected to the lead screw 802. The moving block 803 is fixedly connected to the cylinder 9. Before use, the user can rotate the knob to drive the lead screw 802 to rotate according to their own needs, which will change the height of the moving block 803 and the cylinder 9.

[0032] See Figure 1 and Figure 3 The base 1 has symmetrical grooves. The pedal assembly 4 includes a slider 401 that is slidably disposed in the groove. A vertical rod 402 is fixed on the slider 401. A pedal 403 is rotatably mounted on the top of the vertical rod 402. The pedal 403 can rotate, so as to better adapt to the angle change of the ankle when the lower limb is straight, thus improving comfort.

[0033] Example 2: To further improve the training effect, in this example, refer to... Figures 5 to 8A spare cylinder 15 is fixed to one side of the cylinder 9. The spare cylinder 15 has the same structure as the cylinder 9. A branch pipe 16 is connected to the top of the spare cylinder 15, and a solenoid valve is installed on the branch pipe 16. A touch switch 21 is installed on one side wall of the housing 3. The touch switch 21 is electrically connected to the solenoid valve. A triggering mechanism is provided on one side of the connecting rod 5. The triggering mechanism includes an air pump 17 fixed to the base 1. The piston rod of the air pump 17 is fixedly connected to the connecting rod 5. An air outlet pipe 18 is connected to the air outlet of the air pump 17. A third piston rod 19 is provided inside the air outlet pipe 18. One end of 9 is connected to a trigger plate 20; a spring 22 connects the trigger plate 20 to the housing 3; an air outlet 23 is provided on the air outlet pipe 18; a magnetic component 24 is provided on the side wall of the trigger plate 20 near the housing 3; an adsorption component 25 is provided on the side wall of the housing 3 near the trigger plate 20; a spare cylinder 15 is added. During training, air is supplied to the air outlet pipe 18 by squeezing the air pump 17. The air pressure pushes the third piston column 19 to move. After several training sessions, the trigger plate 20 will contact the touch switch 21 to open the solenoid valve, and some buffer solution will enter the spare cylinder 15. At this time, the buffer solution will be reduced. The resistance of the flushing fluid creates an intermittent cycle of "stable resistance - sudden release," simulating the "brief relaxation after continuous exertion" in dance performances. This strengthens "intermittent muscle endurance," avoids "continuous exertion fatigue" caused by conventional training, and makes endurance more aligned with the actual needs of performances. Furthermore, when the trigger plate 20 contacts the touch switch 21, the piston of the third piston column 19 will pass the vent 23, completing the pressure release. The contact between the magnetic component 24 and the adsorption component 25 will cause the trigger plate 20 to pause briefly, providing sufficient time for pressure release and extending the opening time of the solenoid valve to facilitate the use of the buffer solution. After entering the spare cylinder 15 and bending the lower limbs, the pressure is released, and the buffer solution in the spare cylinder 15 is squeezed back into the pipeline. At this time, under the action of the spring 22, the third piston column 19 is reset. By continuously repeating the above process, the effect of "dynamic intermittent resistance" can be achieved. It is worth noting that after the air pump 17 moves back and forth with the connecting rod 5 several times, it will accumulate enough air pressure to push the trigger plate 20 to contact the contact switch 21. The diameter of the air outlet pipe 18 can be adjusted to change the trigger frequency to meet different training needs. The magnetic component 24 is a magnet, and the adsorption component 25 is made of iron.

[0034] The working principle of the present invention is as follows: Before training, the user first adjusts the position of the seat 2, and rotates the screw 802 through the knob of the adjustment mechanism 8 to drive the moving block 803 to adjust the height of the cylinder 9. Then, the user sits on the seat 2, places both feet on the pedal 403, and fixes the cylinder 9 and the arc support plate 12 of the spare cylinder 15 to the knees through the strap 13.

[0035] During training, the user gradually straightens his / her lower limbs and pushes the pedal 403 to slide, which drives the connecting rod 5 and the first piston column 6 to move, squeezing the buffer solution in the box 3. The buffer solution enters the cylinder 9 through the connecting tube 10, which pushes the second piston column 11 to move. When the lower limbs are bent, the knee squeezes the support plate 12, which drives the second piston column 11 to move, squeezing the buffer solution in the cylinder 9 back into the box 3.

[0036] During training, the connecting rod 5 drives the air pump 17 to work, supplying air into the air outlet pipe 18 to push the third piston column 19 and the trigger plate 20 to move. After several training sessions, the trigger plate 20 contacts the touch switch 21 on the housing 3, causing the solenoid valve on the branch pipe 16 to open. Some buffer solution enters the spare housing 15 on one side of the housing 9 to form an intermittent cycle of "stable resistance - sudden unloading". At this time, the piston of the third piston column 19 passes the air outlet 23 to complete the pressure relief. The trigger plate 20 is attracted to the adsorption component 25 on the housing 3 by the magnetic component 24 and stays briefly. When the lower limbs are bent, the buffer solution in the spare housing 15 is squeezed back into the pipeline. Under the action of the spring 22, the third piston column 19 is reset. The above process is repeated to achieve full-range muscle group training of the lower limbs and intermittent muscle endurance strengthening.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A lower limb strength training device for ballroom dancing, comprising a base (1) and a seat (2) located on the base (1), characterized in that, A housing (3) is provided on the base (1), and two pedal assemblies (4) are slidably connected on the base (1). A connecting rod (5) is fixed between the two pedal assemblies (4). A first piston column (6) is provided inside the housing (3), and one end of the first piston column (6) is fixedly connected to the connecting rod (5). L-shaped support columns (7) are symmetrically installed on the base (1). An adjustment mechanism (8) is slidably connected to the support column (7). A cylinder (9) is fixed on the adjustment mechanism (8). A second piston column (11) is provided inside the cylinder (9). An arc-shaped support plate (12) is fixed to one end of the second piston column (11). Both ends of the support plate (12) are provided with straps (13). A connecting pipe (10) is connected between the cylinder (9) and the box (3). A buffer solution is provided between the box (3) and the cylinder (9). Adjust the height of the cylinder (9) using the adjustment mechanism (8). The user sits on the seat (2) with both feet placed on the two pedal assemblies (4). At this time, the user's lower limbs are bent. Use the straps (13) to fix the two support plates (12) to the knees respectively. After completing the preparation, start training. The user's lower limbs gradually straighten and push the pedal assembly (4) to move, thereby moving the first piston column (6) and squeezing the buffer solution in the box (3). The resistance provided by the buffer solution can ensure the training effect. The buffer solution enters the two cylinders (9) through the connecting tube (10) and pushes the second piston column (11) down. The adjustment mechanism (8) and the support column (7) are slidably connected and will not interfere with the movement of the knees.

2. The lower limb strength training device for ballroom dancing according to claim 1, characterized in that, A positioning block (14) is fixed on the support column (7), and the connecting pipe (10) is located inside the positioning block (14).

3. The lower limb strength training device for ballroom dancing according to claim 1, characterized in that, The adjustment mechanism (8) includes a mounting rod (801) that is slidably connected to the support column (7). A lead screw (802) is rotatably mounted on the mounting rod (801). A knob is mounted on one end of the lead screw (802). A moving block (803) is threadedly connected to the lead screw (802). The moving block (803) is fixedly connected to the cylinder (9).

4. The lower limb strength training device for ballroom dancing according to claim 1, characterized in that, The base (1) has symmetrical grooves, and the pedal assembly (4) includes a slider (401) that is slidably disposed in the groove. A vertical rod (402) is fixed on the slider (401), and a pedal (403) is rotatably mounted on the top of the vertical rod (402).

5. The lower limb strength training device for ballroom dancing according to claim 1, characterized in that, A spare cylinder (15) is fixed on one side of the cylinder (9). The spare cylinder (15) has the same structure as the cylinder (9). A branch pipe (16) is connected to the top of the spare cylinder (15), and a solenoid valve is installed on the branch pipe (16). A touch switch (21) is installed on one side wall of the box (3). The touch switch (21) is electrically connected to the solenoid valve. A triggering mechanism is provided on one side of the connecting rod (5). The triggering mechanism includes a trigger plate. The trigger plate (20) contacts the touch switch (21) on the box (3) to open the solenoid valve on the branch pipe (16).

6. The lower limb strength training device for ballroom dancing according to claim 5, characterized in that, The triggering mechanism includes an air pump (17) fixed on a base (1). The piston rod of the air pump (17) is fixedly connected to a connecting rod (5). The air outlet of the air pump (17) is connected to an air outlet pipe (18). A third piston column (19) is provided inside the air outlet pipe (18). One end of the third piston column (19) is connected to a trigger plate (20).

7. A lower limb strength training device for ballroom dancing according to claim 6, characterized in that, A spring (22) is connected between the trigger plate (20) and the box (3). An air outlet (23) is provided on the air outlet pipe (18). A magnetic component (24) is provided on the side wall of the trigger plate (20) near the box (3). An adsorption component (25) is provided on the side wall of the box (3) near the trigger plate (20). When the solenoid valve on the branch pipe (16) is opened, some buffer solution enters the spare cylinder (15) on one side of the cylinder (9). At this time, the piston of the third piston column (19) passes the air outlet (23) to complete the pressure relief. The trigger plate (20) is briefly attracted to the adsorption component (25) on the box (3) by the magnetic component (24). When the lower limb is bent, the buffer solution in the spare cylinder (15) is squeezed back into the pipeline. Under the action of the spring (22), the third piston column (19) is reset.

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