Knee joint expander for multi-joint constant-speed training
By designing an adjustable knee extender, the existing knee trainer is solved with the complex structure and high cost problems, achieving efficient and comfortable knee training and improving user experience.
Patent Information
- Application Number
- CN202420374937.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing knee joint trainers have complex structures and inconvenient adjustments, which cannot be used for rapid disassembly and assembly, which has high cost, resulting in low training efficiency, poor results and reduced user experience.
A multi-joint isometric knee extender is designed, including swing arms, thigh brackets and calf brackets. The brackets can be adjusted in the length direction of the swing arms according to personal needs, and the legs are fixed by straps. Adjusted adjustment groove and limit groove structure, combined with springs and fasteners to achieve fixing, reduce costs and improve training efficiency.
It achieves efficient and comfortable knee training, reduces training costs, improves user experience, simplifies the training process and improves the applicability of the equipment.
Smart Images
Figure CN222110457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of multi-joint isokinetic training devices, in particular to a knee joint expander used for multi-joint isokinetic training. Background Art
[0002] Isokinetic training is a special type of muscle strength training in which muscles contract at a constant speed throughout their range of motion. This type of training is considered the most effective and safest because it ensures that muscles are trained evenly throughout their range of motion while reducing joint stress and the risk of injury. Initially, isokinetic exercise was mainly used for muscle function assessment and muscle strength training after sports injuries. However, with the continuous deepening of research, isokinetic exercise technology has gradually been applied to the field of rehabilitation medicine.
[0003] Compared with traditional joint training methods, isokinetic exercise has unique advantages. Traditional joint training mainly relies on muscle contraction to rotate the limbs around a certain axis of the joint, and the angular velocity of this rotation is constant. The isokinetic instrument used in isokinetic exercise provides a compliant resistance that can be adjusted according to the size of the muscle contraction tension. Therefore, isokinetic exercise is more suitable for muscle strength recovery and enhancement during rehabilitation or testing.
[0004] For example, a knee joint trainer disclosed in Chinese utility model patent CN215505366U includes a column, a connecting block, a fixing block, a rotating shaft assembly, a support rod, a cross rod, a sheath, a connecting rod, a seat plate, a back plate, and a handle. A connecting rod is installed horizontally on the column, and the rear end of the connecting rod is bent upward. A back plate is installed at the rear end of the connecting rod, and the back plate is arranged longitudinally. However, this knee joint trainer has a complex structure, and the coordination and adjustment during the training are inconvenient. It cannot be applied to the requirements of rapid disassembly and assembly training, and it is also expensive. This not only leads to low training efficiency and poor training results, but also increases training costs and reduces the overall user experience. Utility Model Content
[0005] In order to solve at least one of the problems existing in the prior art, the utility model provides a knee expander for multi-joint isokinetic training, in which a thigh support and a calf support fixed on a swing arm can perform isokinetic movement following the swing arm, and the thigh support and the calf support can be conveniently adjusted in the length direction of the swing arm according to actual individual needs, ensuring that the patient can comfortably position the patient's legs on the support by means of straps, which can effectively ensure the training efficiency and training effect of the knee joint, reduce training costs, and improve the user's training experience.
[0006] In order to achieve the above object, the utility model provides a knee joint expander for multi-joint isokinetic training, comprising:
[0007] The swing arm, one end of which is connected to the drive assembly via a large male connector;
[0008] A thigh support is movably arranged on the swing arm, and a first strap for fixing the thigh on the thigh support is arranged on the thigh support;
[0009] The calf support is movably arranged on the swing arm and is located below the thigh support. The calf support is provided with a second strap for fixing the calf on the thigh support.
[0010] As a preferred technical solution, a protective pad is provided on the connecting male connector, and a sensing chip for identifying the type of the expander is provided inside the protective pad.
[0011] As a preferred technical solution, a soft pad is provided on the end cover connected to the large male connector. Preferably, the soft pad is circular in shape, made of silica gel, and has a hardness of 60-70 degrees.
[0012] As a preferred technical solution, the material of the protection pad is POM.
[0013] As a preferred technical solution, a circular groove is provided inside the protection pad, and the sensing chip is arranged in the circular groove.
[0014] As a preferred technical solution, the connection portion of the connecting large male connector is rectangular in shape. A card slot and a positioning and limiting structure are provided on both sides of the connecting large male connector.
[0015] As a preferred technical solution, a first adjustment slot is provided on the swing arm along the length direction, the calf support is movably arranged in the first adjustment slot, and the position of the calf support can be freely moved and adjusted along the first adjustment slot.
[0016] As a preferred technical solution, the adjustment length of the first adjustment slot matches the length of the calf of the bound person.
[0017] As a preferred technical solution, a plurality of first limiting grooves are provided on the swing arm along the length direction, and the calf support is fixed by the cooperation of the fastener and the first limiting grooves.
[0018] As a preferred technical solution, the first limiting groove is in the shape of a circular groove and is evenly distributed along the length on the back side of one end of the swing arm; the adjustment length of the first adjustment groove is 207MM.
[0019] As a preferred technical solution, a disassembly hole is provided on the swing arm near the end.
[0020] As a preferred technical solution, the fastener is a pentagonal handle, and the calf support is threadedly connected to the swing arm via the pentagonal handle.
[0021] As a preferred technical solution, the calf support can rotate freely and has two upper and lower strap fixing positions.
[0022] As a preferred technical solution, a second adjustment slot is provided on the swing arm and between the connecting big male head and the calf support along the length direction, and the thigh support is movably arranged in the second adjustment slot. The position of the thigh support can be freely moved and adjusted along the second adjustment slot.
[0023] As a preferred technical solution, a tail plate and a locking shaft are arranged between the swing arm and the thigh support. The tail plate is movably arranged in the second adjusting groove. An adjusting spring is sleeved on the locking shaft and a threaded hole is arranged on the locking shaft. Both ends of the adjusting spring are respectively against the swing arm and the thigh support. A plurality of second limiting grooves are arranged along the length direction of the swing arm. The thigh support is fixed by the cooperation of the limiting fixing part with the second limiting groove and the threaded hole. The adjusting spring provides a tightening elastic force for the thigh support to be adjusted and fixed along the second adjusting groove.
[0024] As a preferred technical solution, the second limiting groove is in the shape of a circular groove and is evenly distributed along the length on the back side of one end of the swing arm; the adjustment length of the second adjustment groove is 150MM.
[0025] As a preferred technical solution, the position of the thigh support is freely movable and adjustable along the second adjustment slot, and the adjustment is completed by pressing the adjustment spring.
[0026] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0027] The thigh support and calf support fixed on the swing arm of the utility model can perform isokinetic movement with the swing arm, and the thigh support and calf support can be conveniently adjusted in the length direction of the swing arm according to actual individual needs, ensuring that the patient can comfortably position the patient's legs on the support by means of straps, which can effectively ensure the training efficiency and training effect of the knee joint, reduce training costs, and improve the user's training experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:
[0029] Figure 1An overall structural diagram of a knee joint expander structure for multi-joint isokinetic training provided by an embodiment of the utility model;
[0030] Figure 2 for Figure 1 Schematic diagram from another angle.
[0031] Figure 3 for Figure 1 Schematic diagram from another angle.
[0032] Figure 4 It is a schematic diagram of the structure of the thigh support.
[0033] In the figure: 1-swing arm, 11-connecting male head, 12-protection pad, 121-first protection pad, 122-second protection pad, 13-soft pad, 14-second limiting groove, 15-second adjustment groove, 16-first limiting groove, 17-first adjustment groove, 18-disassembly hole, 2-thigh support, 21-first strap, 22-adjustment spring, 23-locking shaft, 24-limiting fastener, 25-tail plate, 3-calf support, 31-handle, 32-second strap. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0036] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides a knee joint expander for multi-joint isokinetic training, comprising:
[0037] Swing arm 1, one end of the swing arm 1 is provided with a connecting big male head 11 and a soft pad 13, the tail of the connecting big male head 11 is provided with a boss, the connecting big male head 11 is inserted into the groove on the swing arm 1 through the boss at the tail, the end cover of the connecting big male head is threadedly connected to the boss at the tail of the connecting big male head 11 to prevent the connecting big male head 11 from falling off, and the soft pad 13 is stuck on the end cover of the connecting big male head. The connecting big male head 11 is connected to the driving component, and the driving component drives the connecting big male head 11 to rotate, thereby driving the swing arm 1 to rotate at a constant speed with the driving component. The connecting big male head 11 is provided with a protective pad 12 for protecting the sensing chip, and the protective pad 12 for protecting the sensing chip is installed on the head of the connecting big male head 11. The sensing chip is used to automatically identify the expander type. Identifying the expander type allows the host computer system to know the current joint training mode and prevent the wrong training mode from being selected during training.
[0038] The thigh support 2 and the swing arm 1 are provided with a second adjustment slot 15, and the position of the thigh support 2 can be freely moved and adjusted along the second adjustment slot 15; the thigh support 2 is provided with a first strap 21 and an adjustment spring 22, and the thigh is fixed to the thigh support 2 through the first strap 21, which effectively ensures the training efficiency and training effect of the knee joint. A tail plate 25 is arranged between the thigh support 2 and the swing arm 1. The tail plate 25 is U-shaped. The adjusting spring 22 is arranged on the locking shaft 23 located in the tail plate 25. The two ends of the adjusting spring 22 are respectively against the swing arm 1 and the thigh support 2. A threaded hole is opened in the middle of the locking shaft 23. The tail plate 25 is inserted into the second adjusting groove 15 and can move along the second adjusting groove 15. A plurality of second limiting grooves 14 are arranged on the swing arm 1 along the length direction. When the thigh support 2 moves to the point where the locking shaft 23 is concentric with a certain second limiting groove 14, the limiting fastener 24 is locked to the threaded hole in the middle of the locking shaft 23. At the same time, the head of the limiting fastener 24 is also inserted into the second limiting groove 14 to fix the thigh support 2. The adjusting spring 22 provides a tightening elastic force for the thigh support 2 to be adjusted and fixed along the second adjusting groove 15.
[0039] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The position of the thigh support 2 is freely movable and adjustable along the second adjustment groove 15, and the adjustment is completed by pressing the adjustment spring 22, and the position adjustment distance matches the length of the second adjustment groove 15. Pressing the thigh support 2, the adjustment spring 22 is compressed, and the position of the thigh support 2 is moved to a suitable position, and the thigh support 2 is released. Under the action of the elastic force, the tail of the limiting fastener 24 is clamped into the second limiting groove 14, and the thigh support 2 is fixed.
[0040] The calf support 3 is provided with a second strap 32, and the swing arm 1 is provided with a first adjustment slot 17. The position of the calf support 3 can be freely moved and adjusted along the first adjustment slot 17; the calf is fixed to the calf support by the second strap 32, which effectively ensures the training efficiency and training effect of the knee joint.
[0041] The position of the calf support 3 is freely movable and adjustable along the first adjustment slot 17, and the adjustment and fixing is completed by the handle 31. The position adjustment distance matches the length of the first adjustment slot 17. After the position of the calf support 3 is adjusted, the handle 31 is tightened so that the handle 31 is inserted into the first limiting groove 16 on the swing arm 1 to fix the calf support 3.
[0042] In some embodiments of the present invention, the driving component can be configured as any power source capable of outputting rotation, such as a motor.
[0043] In some embodiments of the utility model, the connecting big male head can be connected with the quick-release big female head in the external structure. Among them, the connecting big male head is provided with a card slot, and the quick-release big female head is provided with a connecting slot hole and a quick-release buckle groove. The quick-release buckle is inserted into the quick-release buckle groove and the quick-release buckle is connected to the quick-release big female head through a compression spring. The connecting big male head is inserted into the connecting slot hole, and the quick-release buckle is moved relative to the connecting big male head through the compression spring, so that the quick-release buckle is locked or separated from the card slot of the connecting big male head to achieve the connection, fixation or separation of the quick-release big female head and the connecting big male head.
[0044] A positioning and limiting structure is provided on the connecting big male head, and when connected with the quick-release big female head, the positioning and limiting structure can limit the insertion direction of the connecting big male head 11. In some embodiments of the utility model, the positioning and limiting structure at the connection of the connecting big male head 11 is a mechanical structure, which cooperates with the connecting female head through mechanical structures such as chamfers, roundings, protrusions, and grooves to achieve accurate positioning and stable connection; the positioning and limiting structures can be combined in multiple and various ways.
[0045] The shape of the connection portion of the large male connector can be any shape such as a triangle, a quadrilateral, a circle, etc. In some embodiments of the present utility model, the shape of the connection portion of the large male connector 11 is a rectangle.
[0046] The induction chip is installed inside the protection pad 12, and the material of the protection pad can be any rubber material. In some embodiments of the present utility model, a circular groove is provided inside the protection pad 12, and the induction chip is arranged in the circular groove, and the material of the protection pad 12 is POM.
[0047] In some embodiments of the present invention, the protection pad 12 includes a first protection pad 121 and a second protection pad 122 . The two protection pads are directly stacked on the connecting male connector 11 , and the sensing chip is wrapped in the middle to prevent the sensing chip from contacting metal.
[0048] The material of the soft pad 13 can be any rubber material, and the soft pad 13 reduces the contact and collision impact with the components during exercise. In some embodiments of the utility model, the shape of the soft pad 13 is round, the material of the soft pad 13 is silica gel, and the hardness of the large soft pad is 60-70 degrees.
[0049] In some embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The second limiting groove 14 is in the shape of a circular groove and is evenly distributed along the length on the back of one end of the swing arm; the adjustment length of the second adjustment groove 15 is 150MM. Specifically, the shape of the second limiting groove 14 can be any groove for fixing the limit, which is the same as the tail shape of the limiting fastener. The adjustment length of the second adjustment groove 15 matches the length of the thigh of the bound person.
[0050] A plurality of first limiting grooves 16 are provided along the length direction of the swing arm 1. The shape of the first limiting groove 16 can be any groove for fixing and limiting, and is the same as the shape of the tail of the handle 31. The handle 31 can be any fastener suitable for quick fixing. The adjustment length of the first adjustment groove 17 matches the length of the calf of the bound person. In some embodiments of the present utility model, please refer to Figure 1 and Figure 2 The first limiting groove 16 is in the shape of a circular groove and is evenly distributed along the length at one end of the swing arm 1; specifically, the adjustment length of the first adjustment groove 17 is 207MM.
[0051] In some embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The calf support 3 can rotate freely 360 degrees, and has upper and lower strap fixing positions for training the left and right legs.
[0052] In some embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The calf support 3 is connected and fixed to the swing arm 1 through the handle 31; the calf support 3 can be quickly disassembled through the disassembly hole 18 on the swing arm 1. The disassembly hole 18 provides convenience for the integrated disassembly of the calf support 3. The handle 31 of the entire calf support 3 assembly is unscrewed, and the calf support 3 moves from the first adjustment slot 17 to the disassembly hole 18. When it moves into the disassembly hole 18, it can be disassembled. On the contrary, the calf support 3 is placed in the disassembly hole 18 and moves toward the first adjustment slot 17. When the handle 31 is aligned with the first limiting groove 16, the handle is tightened to fix the calf support 3.
[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A knee joint extender for multi-joint isokinetic training, characterized in that: include: The swing arm, one end of which is connected to the drive assembly via a large male connector; A thigh support is movably arranged on the swing arm, and a first strap for fixing the thigh on the thigh support is arranged on the thigh support; A calf support, which is movably arranged on the swing arm and located below the thigh support, and is provided with a second strap for fixing the calf on the thigh support; A protective pad is provided on the connecting male connector, and a sensing chip for identifying the type of the extender is provided inside the protective pad.
2. A knee joint extender for multi-joint isokinetic training according to claim 1, characterized in that: A soft cushion is provided on the end cover connected to the large male plug.
3. A knee joint extender for multi-joint isokinetic training according to claim 1, characterized in that: A first adjusting slot is provided on the swing arm along the length direction, and the calf support is movably arranged in the first adjusting slot.
4. A knee joint extender for multi-joint isokinetic training according to claim 3, characterized in that: The adjustment length of the first adjustment slot matches the calf length of the bound person.
5. A knee joint extender for multi-joint isokinetic training according to claim 3, characterized in that: A plurality of first limiting grooves are provided on the swing arm along the length direction, and the calf support is fixed by the cooperation of the fastener and the first limiting grooves.
6. A knee joint extender for multi-joint isokinetic training according to claim 3, characterized in that: A disassembly hole is arranged near the end of the swing arm.
7. A knee joint extender for multi-joint isokinetic training according to claim 1, characterized in that: The calf support is provided with upper and lower strap fixing positions.
8. A knee joint expander for multi-joint isokinetic training according to any one of claims 1 to 7, characterized in that: A second adjusting slot is provided on the swing arm and between the connecting large male head and the calf support along the length direction, and the thigh support is movably arranged in the second adjusting slot.
9. A knee joint extender for multi-joint isokinetic training according to claim 8, characterized in that: A tail plate and a locking shaft are arranged between the swing arm and the thigh support. The tail plate is movably arranged in the second adjusting groove. An adjusting spring is sleeved on the locking shaft and a threaded hole is arranged on the locking shaft. Both ends of the adjusting spring respectively abut against the swing arm and the thigh support. A plurality of second limiting grooves are arranged along the length direction of the swing arm. The thigh support is fixed by the cooperation of the limiting fixing part with the second limiting groove and the threaded hole. The adjusting spring provides a tightening elastic force for the thigh support to be adjusted and fixed along the second adjusting groove.