Sitting posture leg kicking training device capable of achieving asynchronous training of two legs
By designing a leg-pressing training device that allows for asynchronous training of both legs, users can independently control the movement of each leg, solving the problem of unbalanced force in leg-pressing machines, achieving asynchronous training, and improving training effectiveness and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SAILEFEL HEALTH IND CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-14
AI Technical Summary
The current leg press machine's simultaneous training of both legs leads to an imbalance in strength development, cannot effectively correct the asymmetry, and affects the exercise effect.
Design a seated leg-pressing training device for asynchronous training of both legs. Through the structure of split components and adjustment components, one end of each support frame is connected to a rotating shaft, and the bottom end of the connecting rod is connected to a pedal. Users can independently control the movement of each leg and change the position and angle of the connecting shaft by adjusting the throttle to achieve synchronous or asynchronous training.
It enables independent movement of each leg, adjusts training intensity according to individual strength differences, improves training effectiveness and equipment stability, reduces production costs, and meets diverse needs.
Smart Images

Figure CN224113207U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fitness equipment, and in particular to a seated leg-pressing training device that allows for asynchronous training of both legs. Background Technology
[0002] A seated leg press machine is a fitness device that typically consists of a seat and a leg press. Users sit on it and push the leg press to train their leg muscles, primarily strengthening the front thigh and gluteal muscles.
[0003] Existing patent CN214808203U discloses an inclined leg-pressing machine. The base has a sliding rail, one end of which has a support seat. The support seat houses a backrest adjustment mechanism, with a lower end of the backrest mounted on the adjustment mechanism. The other lower end of the backrest has a pulley within the sliding rail. A support frame is located on one side of the base, with multiple counterweights mounted on it. Circular tubes are located on both the front and rear sides of the support frame, with sliding seats passing through them. Foot pedals are connected to the sliding seats, which also have counterweights. A support column is connected to one side of the sliding seats, with a slider passing through it. A support rod is located below the support column on the support frame, with a second slider mounted on the support rod. Slider one and slider two are connected by a connecting rod, and a spring is fitted onto the support rod. By repeatedly bending and straightening, the user can move the foot pedal diagonally upwards or downwards. Slider one rises and falls on the support column, causing slider two to move on the support rod, stretching or compressing the spring. The spring provides cushioning, reducing downward impact.
[0004] To address the issue of belt slippage and potential danger if not handled carefully, this patented design allows the foot pedal to move diagonally upwards or downwards through continuous bending and straightening. A slider one rises and falls on the support column, while a slider two moves on the support rod, stretching or compressing the spring. The spring provides cushioning, reducing downward impact. However, in practical use, the following shortcomings remain: traditional leg-exercising machines involve both legs simultaneously, which can lead to an imbalance in the development of strength between the left and right legs. If one leg has different strength or range of motion, this asymmetry may not be effectively adjusted, affecting overall balance and exercise performance.
[0005] Therefore, this utility model provides a seated leg-kicking training device that allows for asynchronous training of both legs. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a seated leg-kicking training device that allows for asynchronous training of both legs.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a seated leg-pressing training device for asynchronous training of both legs, comprising a bottom support, wherein a split component is fixedly connected to the top of the bottom support, and an adjustment component is fixedly connected to the top of the split component.
[0008] The split assembly includes a support frame, and two support frames are provided. The bottom ends of the two support frames are fixedly connected to the top of the bottom bracket. A rotating shaft is rotatably connected to the adjacent ends of the two support frames. A connecting rod is fixedly connected to the outer side of the rotating shaft. A pedal is fixedly connected to the bottom end of the connecting rod. An extension frame is fixedly connected to the outer side of the connecting rod. A counterweight is installed on the outer side of both the connecting rod and the extension frame.
[0009] In a preferred embodiment, the adjusting assembly includes a crossbar with both ends fixedly connected to a support frame. A fixing block is fixedly connected to the bottom end of the crossbar, and a stabilizing rod is fixedly connected to the far ends of the two fixing blocks. A connecting shaft is rotatably connected inside the fixing blocks, and a connecting plate is rotatably connected to the outside of the connecting shaft. A throttle handle is rotatably connected inside the connecting plate. A threaded rod is rotatably connected to the near ends of the two fixing blocks, and a reinforcing shaft is slidably connected inside the two connecting shafts.
[0010] The technical advantage of adopting the above-mentioned further solution is that users can independently control the movement of each leg and can achieve synchronized movement of both feet as needed, thus increasing practicality.
[0011] In a preferred embodiment, a slide rail is installed at the top of the bottom bracket, a seat cushion is installed at the top of the slide rail, a stabilizing column is fixedly connected to the adjacent ends of the two support frames, and a stabilizing block is installed on the outer side of the stabilizing column.
[0012] The technical effect of adopting the above-mentioned further solution is to improve the user's comfort during use and ensure that the device can remain stable when the user is engaged in high-intensity exercise.
[0013] In a preferred embodiment, the end of the stabilizer bar furthest from the fixed block is fixedly connected to the support frame.
[0014] The technical effect of adopting the above-mentioned further solution is to improve the stability of the adjustment component.
[0015] In a preferred embodiment, the throttle is internally threaded onto a threaded rod.
[0016] The technical effect of adopting the above-mentioned further solution is to ensure that when the throttle is turned, it can drive other structures to move by moving left and right through the threaded rod.
[0017] In a preferred embodiment, the outer side of the connecting shaft engages with the inner side of the rotating shaft, and the outer side of the rotating shaft is rotatably connected to the fixed block.
[0018] The technical effect of adopting the above-mentioned further solution is to ensure stability when the two pedals move synchronously.
[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0020] By incorporating a split-component and adjustable structure, each support frame is connected to a rotating shaft at one end. These shafts support the rotation of the connecting rod, with a pedal connected to the bottom of the connecting rod. When the user presses the pedal, the rotating shaft allows the connecting rod to rotate flexibly in both horizontal and vertical directions. Furthermore, the user can adjust the throttle to change the position and angle of the connecting shaft, thus connecting the two adjustable pedals together. This design allows each leg to move independently, helping users adjust the training intensity according to their own strength and flexibility, thereby more effectively training and strengthening the weaker side. It also allows for synchronized operation of the two pedals, reducing production costs while improving the stability and adjustability of the equipment, making it more suitable for diverse market demands. Attached Figure Description
[0021] Figure 1 A three-dimensional structural diagram of a seated leg-kicking training device for asynchronous training of both legs provided by this utility model;
[0022] Figure 2 A modified diagram of a seated leg-pressing training device for asynchronous training of both legs provided by this utility model;
[0023] Figure 3 A schematic diagram of the adjustment component structure of a seated leg-pressing training device for asynchronous training of both legs provided by this utility model;
[0024] Figure 4 This is a split view of the adjustment components of a seated leg-pressing training device for asynchronous training of both legs, provided by this utility model.
[0025] Legend:
[0026] 1. Bottom support;
[0027] 2. Split-type components; 21. Support frame; 22. Rotating shaft; 23. Connecting rod; 24. Pedal; 25. Extension frame; 26. Counterweight;
[0028] 3. Adjustment assembly; 31. Crossbar; 32. Fixing block; 33. Stabilizer bar; 34. Connecting shaft; 35. Connecting plate; 36. Throttle; 37. Threaded rod; 38. Reinforcing shaft;
[0029] 4. Slide rail; 5. Seat cushion; 6. Stabilizing column; 7. Stabilizing block. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figures 1-2 As shown, this embodiment provides a technical solution: a seated leg-pressing training device for asynchronous training of both legs, including a bottom support 1, a split component 2 fixedly connected to the top of the bottom support 1, and an adjustment component 3 fixedly connected to the top of the split component 2.
[0032] The split component 2 includes two support frames 21. The bottom ends of both support frames 21 are fixedly connected to the top of the bottom support 1. A rotating shaft 22 is rotatably connected to the adjacent ends of both support frames 21. A connecting rod 23 is fixedly connected to the outer side of the rotating shaft 22. A pedal 24 is fixedly connected to the bottom end of the connecting rod 23. An extension frame 25 is fixedly connected to the outer side of the connecting rod 23. Counterweights 26 are installed on the outer sides of both the connecting rod 23 and the extension frame 25. The support frames 21 serve as the main structure of the entire device, providing stable support. The device has two support frames 21, located on both sides, ensuring the user's balance and stability during training. The bottom ends of the support frames 21 are fixedly connected to the top of the bottom support 1, which is sturdy and durable, capable of withstanding various forces and pressures during training. A rotating shaft 22 is rotatably connected to the adjacent ends of both support frames 21. The rotating shaft 22 serves as the connection point between the connecting rod 23 and the support frame 21, allowing the connecting rod 23 to rotate freely within a certain range. This design allows the pedal 24 to flexibly adjust with the leg movements during the leg-pressing process, thus achieving asynchronous training of both legs. The connecting rod 23 is a key component connecting the rotating shaft 22 and the pedal 24, with the pedal 24 fixedly connected to its bottom end. The pedal 24 is made of a non-slip material to ensure the user's safety during training. An extension frame 25 is also fixedly connected to the outside of the connecting rod 23, increasing the stability of the device. Furthermore, the counterweights 26 can be added or removed according to the user's needs to adjust the difficulty and intensity of the training. This design allows the device to adapt to users of different levels and needs, meeting their requirements for strength training and fitness improvement.
[0033] Furthermore, such as Figure 1As shown: A slide rail 4 is mounted on the top of the bottom support 1, and a seat cushion 5 is mounted on the top of the slide rail 4. A stabilizing column 6 is fixedly connected to the adjacent ends of the two support frames 21. Stabilizing blocks 7 are mounted on the outer side of the stabilizing column 6. The design of the slide rail 4 ensures smooth and unobstructed movement of the seat cushion 5. The seat cushion 5 is made of high-grade materials, with a soft and comfortable feel, providing users with an excellent sitting experience. Furthermore, to further enhance the stability of the entire structure, the adjacent ends of the two support frames 21 are connected to the stabilizing column 6 using precise craftsmanship. The presence of the stabilizing column 6 ensures that the entire structure remains stable when subjected to external forces. Stabilizing blocks 7 are also installed on the outer side of the stabilizing column 6; these stabilizing blocks 7 act as reinforcing ribs, further strengthening the stability of the stabilizing column 6.
[0034] To reduce the manufacturing cost of leg-exercising machines, such as Figures 2-4As shown: In this scheme, the adjusting component 3 includes a crossbar 31, both ends of which are fixedly connected to the support frame 21. A fixing block 32 is fixedly connected to the bottom end of the crossbar 31. The outer side of the rotating shaft 22 is rotatably connected to the fixing block 32. A stabilizing rod 33 is fixedly connected to the far end of the two fixing blocks 32. The end of the stabilizing rod 33 away from the fixing block 32 is fixedly connected to the support frame 21. A connecting shaft 34 is rotatably connected inside the fixing block 32. The outer side of the connecting shaft 34 engages with the inside of the rotating shaft 22. A connecting plate 35 is rotatably connected to the outer side of the connecting shaft 34. A handle 36 is rotatably connected inside the connecting plate 35. A threaded rod 37 is rotatably connected to one end of each fixed block 32. The internal thread of the handle 36 is connected to the threaded rod 37. A reinforcing shaft 38 is slidably connected to the two connecting shafts 34. The middle crossbar 31 of the adjusting assembly 3 is fixedly connected to the support frame 21, forming a stable and reliable basic structure. The design of the fixed block 32 at the bottom end of the crossbar 31 ensures the stability and reliability of the adjusting assembly 3. A high-strength connection is used between the fixed block 32 and the crossbar 31 to ensure that it will not loosen or fall off during the adjustment process. The rotating shaft 22 is rotatably connected to the fixed block 32, so that the adjusting assembly... Component 3 can be flexibly adjusted in angle or position. The design of the rotating shaft 22 fully considers the usage scenarios and actual needs, ensuring the smooth operation and precise adjustment of the adjusting component 3. To further enhance the stability of the adjusting component 3, we added a stabilizing rod 33 to the far end of the two fixed blocks 32. One end of the stabilizing rod 33 is firmly fixed to the support frame 21, and the other end is tightly connected to the fixed block 32. This design allows the adjusting component 3 to maintain a stable posture when subjected to external forces, avoiding errors caused by shaking or vibration. Inside the fixed block 32, the connecting shaft 34 is connected by rotation. The connection method engages with the inside of the rotating shaft 22, enabling the adjustment component 3 to achieve more precise adjustment. At the same time, the outer side of the connecting shaft 34 is also rotatably connected to the connecting plate 35, ensuring that the movement of the connecting plate 35 can be transmitted to the connecting shaft 34, achieving precise linear movement. By rotating the throttle 36, the position of the adjustment component 3 can be easily adjusted. The threaded rod 37 inside the throttle 36 makes the adjustment process more stable. In addition, the reinforcing shaft 38, which is slidably connected inside the two connecting shafts 34, not only increases the load-bearing capacity of the adjustment component 3, but also ensures that the two pedals 24 can move accurately and synchronously when moving.
[0035] Working principle:
[0036] like Figures 1-4 As shown:
[0037] In use: First, the user sits on the seat cushion 5 and adjusts its position using the slide rail 4. Then, the user places their feet on the pedal 24, which will drive the connecting rod 23 to move. The connecting rod 23 will then rotate the rotating shaft 22 on the support frame 21, ensuring stability during exercise. When the legs retract, the inner side of the extension frame 25 will fit against the pad on the support frame 21 to prevent wear and tear over time. The number of counterweights 26 on the connecting rod 23 and the extension frame 25 can be adjusted according to individual body conditions to achieve a suitable workout. Secondly, when it is necessary to synchronize the two pedals 24, by rotating the throttle 36, the throttle 36 rotates on the threaded rod 37, which drives the connecting plate 35 to move, thereby driving the connecting shaft 34 to slide towards the rotating shaft 22. When the connecting shaft 34 slides, the other end will also slide on the reinforcing shaft 38 until the connecting shaft 34 and the rotating shaft 22 are tightly fitted together. At this time, when moving, the movement of the pedal 24 can drive the movement of the rotating shaft 22. Since the rotating shaft 22, the connecting shaft 34 and the reinforcing shaft 38 are engaged together, the effect of synchronous movement can be achieved.
[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A seated leg-pressing training device for asynchronous training of both legs, comprising a bottom support (1), characterized in that, The top of the bottom support (1) is fixedly connected to a split component (2), and the top of the split component (2) is fixedly connected to an adjustment component (3); The split component (2) includes a support frame (21), and there are two support frames (21). The bottom ends of the two support frames (21) are fixedly connected to the top of the bottom bracket (1). The two support frames (21) are rotatably connected to a rotating shaft (22) at their adjacent ends. A connecting rod (23) is fixedly connected to the outside of the rotating shaft (22). A pedal (24) is fixedly connected to the bottom end of the connecting rod (23). An extension frame (25) is fixedly connected to the outside of the connecting rod (23). A counterweight (26) is installed on the outside of both the connecting rod (23) and the extension frame (25).
2. The seated leg-pressing training device for asynchronous training of both legs according to claim 1, characterized in that: The adjustment assembly (3) includes a crossbar (31), both ends of which are fixedly connected to the support frame (21). A fixing block (32) is fixedly connected to the bottom end of the crossbar (31). A stabilizing rod (33) is fixedly connected to the far end of the two fixing blocks (32). A connecting shaft (34) is rotatably connected inside the fixing block (32). A connecting plate (35) is rotatably connected to the outside of the connecting shaft (34). A throttle handle (36) is rotatably connected inside the connecting plate (35). A threaded rod (37) is rotatably connected to the near end of the two fixing blocks (32). A reinforcing shaft (38) is slidably connected inside the two connecting shafts (34).
3. The seated leg-pressing training device for asynchronous training of both legs according to claim 1, characterized in that: The bottom bracket (1) is equipped with a slide rail (4) at its top end, and a seat cushion (5) is installed at the top end of the slide rail (4). A stabilizing column (6) is fixedly connected to one end of the two support frames (21), and a stabilizing block (7) is installed on the outside of the stabilizing column (6).
4. The seated leg-pressing training device for asynchronous training of both legs according to claim 2, characterized in that: The end of the stabilizer bar (33) away from the fixed block (32) is fixedly connected to the support frame (21).
5. A seated leg-pressing training device for asynchronous training of both legs according to claim 2, characterized in that: The internal thread of the throttle (36) is connected to the threaded rod (37).
6. The seated leg-pressing training device for asynchronous training of both legs according to claim 2, characterized in that: The outer side of the connecting shaft (34) engages with the inside of the rotating shaft (22), and the outer side of the rotating shaft (22) is rotatably connected to the fixed block (32).