Leg bending, stretching, bending and lifting integrated trainer
By designing an all-in-one leg flexion and extension trainer and utilizing angle locking components and load modules, the unification of leg flexion and extension and leg curling movements is achieved, solving the problem of single function of existing trainers and providing a comfortable and safe training experience.
Patent Information
- Application Number
- CN202422755488.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing leg flexion and extension trainers have a single function and cannot perform leg flexion and extension and leg curl exercises at the same time. They require additional equipment, which increases costs and space.
A leg flexion and extension curl integrated training device is designed. The angle between the chair back and the seat plate is adjusted by an angle locking component. The driving arm and the load module are combined to realize the switching between flexion and extension and curling movements. Flexible sleeves and limit columns are equipped to prevent injuries, and the load module increases the training load.
It realizes the unification of leg flexion and extension and curling movements, saves costs, reduces space occupation, and provides a comfortable and safe training experience.
Smart Images
Figure CN223416661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fitness equipment, in particular to a leg flexion, extension and curl integrated training device. Background Art
[0002] With the continuous advancement of fitness equipment and the widespread development of national fitness activities, people are using fitness equipment more and more frequently, and various fitness equipment have begun to appear on the market. The leg flexion and extension trainer is a type of fitness equipment that mainly exercises the front thigh muscles. This trainer can improve knee joint strength and thigh muscle feeling.
[0003] Existing leg curl machines typically consist of a frame, a seat, a drive arm, and a load. The user sits on the seat, presses their ankle against the drive arm, and applies force with the front of their thigh to lift the load, thereby performing the leg curl. These leg curl machines are limited in functionality and only perform leg curls. If the user also wants to perform leg curls, they need an additional piece of fitness equipment, which is not only expensive but also takes up too much space. Utility Model Content
[0004] The technical problem to be solved by the utility model is: to overcome the defects of the above-mentioned prior art and provide an integrated training device which can exercise leg flexion and extension and leg curl.
[0005] The technical solution of the present utility model is to provide a leg curl and flexion integrated training device having the following structure: comprising a frame, a load module connected to the frame, a drive arm, and a seat; the drive arm is rotatably connected to the frame and located in front of the seat; the output end of the load module is transmission-connected to the drive arm for providing resistance to the rotation of the drive arm;
[0006] The chair includes a seat plate and a chair back, a cross bar is provided on the frame, the seat plate is fixedly connected to the cross bar, and the chair back is rotatably connected to the cross bar. An angle locking component is also provided between the chair back and the cross bar for locking the angle between the chair back and the seat plate; when the chair back is rotated to fit with the cross bar, the seat plate and the chair back are located on the same plane.
[0007] After adopting the above structure, the utility model leg flexion and extension curling integrated training device has the following advantages compared with the existing technology:
[0008] The angle between the chair back and the seat is adjusted through the angle locking component so that the user is in a sitting position when sitting on it. The driving arm is then fitted with the ankle, and force is applied to the front of the thigh to enable smooth flexion and extension movements.
[0009] The angle between the chair back and the seat plate is adjusted by the angle locking assembly, so that the seat plate and the chair back are located on the same plane, the user can lie on the seat plate and the chair back of the seat, and then the driving arm is attached to the rear ankle or the lower leg, the rear side of the thigh is forced, so that the user can smoothly perform the squatting movement.
[0010] The leg flexion and extension squatting integrated training device can not only perform the leg flexion and extension movement, but also perform the leg squatting movement, the user can easily switch according to the exercise requirement, two fitness equipments are not needed, cost is saved, and space occupation is reduced.
[0011] As preferred, the driving arm comprises a wheel disc, a first force arm and a second force arm, the wheel disc is rotatably connected to the rack, and the two ends of the first force arm are respectively connected to the rotating shaft of the wheel disc and the second force arm; the wheel disc and the second force arm are arranged on the two sides of the first force arm, and the rotating shaft of the wheel disc and the second force arm are arranged in parallel.
[0012] As preferred, a sleeve made of flexible material is arranged on the second force arm, and the second force arm is rotatably connected to the first force arm. The sleeve made of flexible material can make the user more comfortable when using the training device, and avoid injuring the ankle or the lower leg.
[0013] As preferred, an axial extending limiting column is arranged on the wheel disc, and the limiting column is used for abutting against the rack; a plurality of locking holes are arranged on the wheel disc in a circumferential direction, a locking bolt is arranged on the first force arm, and the locking bolt is used for being connected into one of the locking holes, so as to lock the relative position between the limiting column and the first force arm.
[0014] When the leg flexion and extension training and the leg squatting training are switched, the relative position between the limiting column and the first force arm can be adjusted by the locking bolt, so that the limiting column can abut against the rack when the second force arm is in the initial position; in this way, the second force arm can only be reset to the initial position when the user releases the force, and the second force arm can avoid injuring the ankle or the lower leg of the user.
[0015] As preferred, the load module comprises a third force arm, a load rod and a cable; one end of the third force arm is hinged to the rack, and the other end is connected to the load rod, the load rod is used for connecting the barbell plate; one end of the cable is connected to the third force arm, and the other end is connected to the outer edge of the wheel disc.
[0016] When the user pushes the second force arm with the leg, the wheel disc is driven to rotate, and the barbell plate on the load rod is pulled up through the cable when the wheel disc rotates, so as to increase the load when the second force arm is pushed, and thus a better exercise effect is achieved.
[0017] The load module also includes a fixed pulley fixedly connected to the frame. The fixed pulley can change the path of the cable to facilitate the adjustment of the position of the barbell plate, making it closer to the center of the fitness equipment, making its center of gravity more stable and safer.
[0018] Preferably, the angle locking assembly includes a curved locking piece and a latch. One end of the curved locking piece is connected to the chair back, and the curved locking piece is arranged concentrically with the chair back's rotation axis. The crossbar is provided with a first through-hole extending through its upper and lower end surfaces for the free end of the curved locking piece to pass through. The sidewall of the crossbar is provided with a second through-hole connected to the first through-hole. The curved locking piece is provided with a plurality of pin holes evenly spaced apart. The free end of the latch passes through the second through-hole and the pin hole in sequence to lock the curved locking piece. The latch and the pin holes cooperate to easily adjust the angle between the chair back and the seat panel, providing convenient adjustment and a simple structure.
[0019] Preferably, a side wall of the chair back away from the seat plate is provided with a slot matching the cross bar for accommodating the cross bar. In this way, when the chair back and the cross bar are fitted together, the cross bar can be inserted into the slot of the chair back, thereby making the chair back more stable when it is laid flat.
[0020] Preferably, a first handle is provided on the crossbar near the seat, and a second handle is provided on the end of the crossbar away from the seat. The first handle is arranged parallel to the crossbar, and the second handle is arranged perpendicular to the crossbar. The positions of the first and second handles are ergonomic, and when the user grips the handles, the upper body naturally occupies a neutral position, effectively guiding the movements and providing effective support and stabilization of the upper body during training.
[0021] Preferably, a vertically extending storage rod is provided on the end of the frame away from the seat for storing the barbell plates flatly. The vertically positioned storage rod ensures more stable and secure placement of the barbell plates. The rearward placement of the storage rod also helps maintain a neutral center of gravity, further stabilizing the center of gravity of the machine, thereby improving machine stability, safety, and the training experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural diagram of the present utility model.
[0023] Figure 2 It is a structural diagram of the seat in this utility model.
[0024] Figure 3 This is a structural diagram of the load module and the drive arm in the utility model.
[0025] Figure 4 This is a structural diagram of the load module and the drive arm in the present invention from another viewing direction.
[0026] Figure 5 forFigure 2 A part of enlarged view of Fig. 1.
[0027] BRIEF DESCRIPTION OF DRAWINGS
[0028] 1, rack, 11, crossbar, 111, first through hole, 112, second through hole, 12, storage rod, 2, load module, 21, third force arm, 22, load rod, 23, cable, 24, fixed pulley, 3, drive arm, 31, wheel disc, 311, limiting column, 312, locking hole, 32, first force arm, 321, locking bolt, 33, second force arm, 34, sleeve, 4, seat, 41, seat plate, 42, backrest, 421, clamping groove, 43, angle locking assembly, 431, arc-shaped locking piece, 4311, pin hole, 432, latch, 44, first handle, 45, second handle. DETAILED DESCRIPTION
[0029] The utility model will be described in further detail below in combination with the drawings and specific embodiments.
[0030] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model, and the terms "first", "second" and the like are only for distinguishing the names of components, and do not have primary and secondary relationships, therefore, it cannot be understood as a limitation on the utility model.
[0031] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ;
[0032] The utility model discloses a leg flexion and extension bending integrated training device: including rack 1 and the load module 2 of connecting on rack 1, drive arm 3 and seat 4.
[0033] Drive arm 3 rotatable connection is established in rack 1, and is located in the front of seat 4, the output of load module 2 is transmission connection with drive arm 3, and is used to provide resistance for the rotation of drive arm 3.
[0034] The seat 4 includes a seat pan 41 and a backrest 42. A crossbar 11 is provided on the frame 1. The crossbar 11 is tilted downward from one end near the seat 4 to the other. The seat pan 41 is fixedly connected to the crossbar 11, and the backrest 42 is rotatably connected to the crossbar 11. An angle locking assembly 43 is provided between the backrest 42 and the crossbar 11 to lock the angle between the backrest 42 and the seat pan 41. When the backrest 42 is rotated to align with the crossbar 11, the seat pan 41 and the backrest 42 are located on the same plane.
[0035] The angle between the chair back 42 and the seat 41 is adjusted through the angle locking component 43 so that the user is in a sitting position when sitting on it. Then the driving arm 3 is fitted with the ankle and the front of the thigh is exerted to enable smooth flexion and extension movements.
[0036] By adjusting the angle between the chair back 42 and the seat 41 through the angle locking component 43, the seat 41 and the chair back 42 are located on the same plane. The user can then lie on the seat 41 and the chair back 42 of the chair 4, and then fit the driving arm 3 with the back ankle or calf, and exert force on the back of the thigh so that the user can perform the curling exercise smoothly.
[0037] The leg flexion and extension curl integrated trainer of the utility model can not only perform leg flexion and extension exercises, but also leg curl exercises. Users can easily switch according to exercise needs without having to prepare two fitness equipment, which not only saves costs but also reduces space occupation.
[0038] The driving arm 3 includes a wheel disc 31, a first lever arm 32 and a second lever arm 33. The wheel disc 31 is rotatably connected to the frame 1, and the two ends of the first lever arm 32 are respectively vertically connected to the rotating shaft of the wheel disc 31 and the second lever arm 33; the wheel disc 31 and the second lever arm 33 are respectively arranged on both sides of the first lever arm 32, and the rotating shaft of the wheel disc 31 is arranged parallel to the second lever arm 33.
[0039] A sleeve 34 made of a flexible material (e.g., foam) is sleeved on the second arm 33, and the second arm 33 is rotatably connected to the first arm 32. The sleeve 34 made of a flexible material can make the user more comfortable when using the trainer and avoid injury to the ankle or calf.
[0040] An axially extending limit column 311 is provided on the wheel disc 31, and the limit column 311 is used to abut against the frame 1; the wheel disc 31 is provided with locking holes 312 distributed at intervals along its circumference, and the first force arm 32 is provided with a locking bolt 321, which is used to be connected to one of the locking holes 312, thereby locking the relative position between the limit column 311 and the first force arm 32.
[0041] When switching between leg flexion and extension training and leg curl training, the user can adjust the relative position between the limit column 311 and the first lever arm 32 by connecting the locking bolt 321 to different locking holes 312, so that when the second lever arm 33 is in the initial position, the limit column 311 can be against the frame 1; in this way, when the user unloads the force, the second lever arm 33 can only be reset to the initial position, preventing the second lever arm 33 from squeezing the user's ankle or calf.
[0042] The load module 2 includes a third lever arm 21, a load rod 22 and a cable 23; one end of the third lever arm 21 is hinged to the frame 1, and the other end is connected to the load rod 22, and the load rod 22 is used for connecting the barbell plates; one end of the cable 23 is connected to the third lever arm 21, and the other end is connected to the outer edge of the wheel 31.
[0043] When the user pushes the second lever arm 33 with his legs, the wheel 31 is driven to rotate. When the wheel 31 rotates, the barbell plate on the load rod 22 is pulled up through the cable 23, thereby increasing the load when pushing the second lever arm 33, thereby achieving a better exercise effect.
[0044] The load module 2 also includes a fixed pulley 24 fixedly connected to the frame 1. The fixed pulley 24 can change the path of the cable 23 to facilitate the adjustment of the position of the barbell plate so that it is closer to the center of the fitness equipment, making its center of gravity more stable and safer.
[0045] The angle locking assembly 43 includes an arc-shaped locking piece 431 and a latch 432. One end of the arc-shaped locking piece 431 is connected to the chair back 42, and the arc-shaped locking piece 431 is arranged concentrically with the rotation axis of the chair back 42. The crossbar 11 is provided with a first through-hole 111 extending through its upper and lower end surfaces, for the free end of the arc-shaped locking piece 431 to pass through. The side wall of the crossbar 11 is provided with a second through-hole 112 connected to the first through-hole 111. The arc-shaped locking piece 431 is provided with a plurality of pin holes 4311 evenly spaced apart. The free end of the latch 432 passes through the second through-hole 112 and the pin hole 4311 in sequence to lock the arc-shaped locking piece 431. The latch 432 cooperates with the pin hole 4311 to easily adjust the angle between the chair back 42 and the seat 41, which is not only convenient to adjust but also simple in structure.
[0046] A slot 421 matching the cross bar 11 is provided on one side wall of the chair back 42 away from the seat plate 41 for accommodating the cross bar 11. In this way, when the chair back 42 and the cross bar 11 are in contact, the cross bar 11 can be inserted into the slot 421 of the chair back 42, thereby making the chair back 42 more stable when it is laid flat.
[0047] A first handle 44 is arranged on the crossbar 11 near the seat plate 41, and a second handle 45 is arranged on the crossbar 11 away from the seat plate 41. The first handle 44 is parallel to the crossbar 11, and the second handle 45 is perpendicular to the crossbar 11. The positions of the first handle 44 and the second handle 45 are ergonomic, and after the user holds the handles, the upper body is naturally in a neutral position, which can effectively provide action guidance and provide effective support and stability for the upper body during training.
[0048] A vertical upward extending storage rod 12 is arranged on the rack 1 away from the seat 4, for placing and storing the barbell plates. The vertically arranged storage rod 12 makes the barbell plates more stable and safe, and the rear arrangement of the storage rod 12 also helps to keep the center of gravity in a neutral position, which can further stabilize the center of gravity of the equipment, thereby improving the stability, safety and training experience of the equipment.
[0049] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A leg flexion and extension curl training device, characterized by: The invention comprises a frame (1), a load module (2) connected to the frame (1), a driving arm (3) and a seat (4); the driving arm (3) is rotatably connected to the frame (1) and is located in front of the seat (4); the output end of the load module (2) is transmission-connected to the driving arm (3) for providing resistance to the rotation of the driving arm (3); The seat (4) comprises a seat plate (41) and a chair back (42); a cross bar (11) is provided on the frame (1); the seat plate (41) is fixedly connected to the cross bar (11); the chair back (42) is rotatably connected to the cross bar (11); an angle locking assembly (43) is further provided between the chair back (42) and the cross bar (11) for locking the angle between the chair back (42) and the seat plate (41); when the chair back (42) is rotated to fit with the cross bar (11), the seat plate (41) and the chair back (42) are located on the same plane.
2. The leg flexion and extension curl training device according to claim 1, characterized in that: The driving arm (3) comprises a wheel disc (31), a first lever arm (32) and a second lever arm (33); the wheel disc (31) is rotatably connected to the frame (1); the two ends of the first lever arm (32) are respectively vertically connected to the rotating shaft of the wheel disc (31) and the second lever arm (33); the wheel disc (31) and the second lever arm (33) are respectively arranged on both sides of the first lever arm (32), and the rotating shaft of the wheel disc (31) is arranged parallel to the second lever arm (33).
3. The leg flexion and extension curl training device according to claim 2, characterized in that: A sleeve (34) made of a flexible material is sleeved on the second lever arm (33), and the second lever arm (33) is rotatably connected to the first lever arm (32).
4. The leg flexion and extension curl integrated training device according to claim 3, characterized in that: The wheel disc (31) is provided with an axially extending limiting column (311), and the limiting column (311) is used to abut against the frame (1); the wheel disc (31) is provided with locking holes (312) distributed along its circumference at intervals, and the first force arm (32) is provided with a locking bolt (321), and the locking bolt (321) is used to be connected to one of the locking holes (312), thereby locking the relative position between the limiting column (311) and the first force arm (32).
5. The leg flexion and extension curl integrated training device according to claim 4, characterized in that: The load module (2) comprises a third lever (21), a load rod (22) and a cable (23); one end of the third lever (21) is hinged to the frame (1), and the other end is connected to the load rod (22), and the load rod (22) is used for connecting a barbell plate; one end of the cable (23) is connected to the third lever (21), and the other end is connected to the outer edge of the wheel disc (31).
6. The leg flexion and extension curl training device according to claim 1, characterized in that: The angle locking assembly (43) includes an arc-shaped locking piece (431) and a latch (432), one end of the arc-shaped locking piece (431) is connected to the chair back (42), and the arc-shaped locking piece (431) is arranged cocentrically with the rotation axis of the chair back (42); the cross bar (11) is provided with a first through hole (111) penetrating the upper and lower end surfaces thereof, for allowing the free end of the arc-shaped locking piece (431) to pass through; the side wall of the cross bar (11) is provided with a second through hole (112) connected to the first through hole (111), and a plurality of pin holes (4311) are evenly spaced on the arc-shaped locking piece (431), and the free end of the latch (432) passes through the second through hole (112) and the pin hole (4311) in sequence to lock the arc-shaped locking piece (431).
7. The leg flexion and extension curl training device according to claim 6, characterized in that: A slot (421) matching the crossbar (11) is provided on a side wall of the chair back (42) away from the seat plate (41) for accommodating the crossbar (11).
8. The leg flexion and extension curl training device according to claim 1, characterized in that: A first handle (44) is provided on the cross bar (11) at a position close to the seat plate (41), and a second handle (45) is provided on an end of the cross bar (11) away from the seat plate (41). The first handle (44) is arranged parallel to the cross bar (11), and the second handle (45) is arranged perpendicular to the cross bar (11).
9. The leg flexion and extension curl training device according to claim 1, characterized in that: A storage rod (12) extending vertically upward is provided on one end of the frame (1) away from the seat (4) for storing the barbell plates flatly.