Knee joint fixing brace convenient for adjusting tightness degree

Abstract

The invention relates to the technical field of fixing braces, and particularly discloses a knee joint fixing brace convenient for adjusting the tightness degree, the knee joint fixing brace convenient for adjusting the tightness degree achieves the purposes of easily adjusting the tightness degree and carrying out targeted extrusion on specific parts, thigh muscles are fixed by a thigh assembly, and the knee joint fixing brace convenient for adjusting the tightness degree is convenient to use. The stay wire is fastened through a corresponding operation device, meanwhile, operation is easy and reliable in the process switching of tightening and loosening, compared with a traditional fastening mode such as a hook-and-loop fastener, the operation convenience is guaranteed, meanwhile, the fastening strength is kept, the same fastening is kept in a concentrated mode in the long-time use period, meanwhile, the process of replacing the assembly is easy to operate, and the assembly replacement efficiency is improved. The fixing assembly is used for accurately fixing the joint part, and compared with a traditional fixing brace, supporting to a specific position is added.

Description

Technical Field

[0001] The present invention relates to the technical field of fixed braces, and specifically to a knee joint fixed brace that is convenient for adjusting the tightness degree. Background Art

[0002] As an important auxiliary device for sports medicine, orthopedic rehabilitation, and postoperative protection, the core function of the knee joint fixed brace is to replace or enhance the knee joint stability through external support. Although the intelligent shape memory alloy (SMA) drive scheme can achieve temperature-responsive deformation adjustment at the laboratory stage, there are industrialization barriers such as obvious hysteresis effect, controversy over biological safety, and high cost. Therefore, there is an urgent need to develop a new adjustment system that combines mechanical precision control and ergonomic topology optimization to achieve millimeter-level real-time linear pressure regulation without external energy intervention, while meeting the dual standards of medical-grade aseptic operation and sports shock resistance.

[0003] The tightness adjustment technology of traditional braces has long relied on the mechanical fixation mode of nylon fasteners (Velcro) and multi-stage buckles. When the patient's limb swells and fluctuates, the strap pressure needs to be adjusted repeatedly. However, the repeated tearing of Velcro easily leads to fabric fatigue and reduced adhesion, and the adjustment noise is obvious at night. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A knee joint fixed brace that is convenient for adjusting the tightness degree, including a calf bracket, the top of the calf bracket is fixedly connected with a rotating component, the top of the rotating component is fixedly connected with a thigh component, and the side of the thigh component is fixedly connected with a fixing component; The rotating assembly includes a rotating chassis. A first toothed ring is fixedly connected to the side of the rotating chassis. A rotating shaft is rotatably connected to the inner wall of the first toothed ring. A sliding sleeve is slidably connected to the side of the rotating shaft. A first spring is fixedly connected to the inner side wall of the sliding sleeve. One end of the first spring away from the sliding sleeve is fixedly connected to the inner wall of the rotating shaft. A through hole is formed at the top of the first spring. A second toothed ring adapted to the first toothed ring is fixedly connected to the side of the first spring. One end of the rotating shaft away from the first spring is fixedly connected to a moving frame. The side of the moving frame is fixedly connected to the side of the calf bracket. The top of the rotating chassis is fixedly connected to the bottom of the thigh assembly. The rotation of the sliding sleeve drives the rotation of the rotating shaft. The rotation of the rotating shaft drives the rotation of the moving frame. The rotation of the moving frame drives the movement of the calf bracket, so that the thigh and calf are in different angular positions. Under the tension of the first spring, the sliding sleeve slides along the side of the rotating shaft, so that the second toothed ring meshes with the first toothed ring. After the sliding sleeve rotates to a suitable position, it maintains a braking state under the combined braking effect of the second toothed ring and the first toothed ring, so as to keep the moving frame at a fixed angle. When the angle needs to be adjusted, the sliding sleeve is pulled in a direction away from the first toothed ring, so that the first toothed ring and the second toothed ring are disengaged from each other, so that the rotating shaft rotates automatically, so as to return the moving frame for angle adjustment.

[0005] Preferably, the thigh assembly includes a contact bottom plate. A first rotating frame is rotatably connected to the side of the contact bottom plate through a rotating shaft. A first fixing plate is fixedly connected to the side of the first rotating frame. A second rotating frame is rotatably connected to the top of the first rotating frame through a rotating shaft. A second fixing plate is fixedly connected to the side of the second rotating frame. A cable assembly is fixedly connected to the side of the second fixing plate. A third rotating plate is rotatably connected to the side of the contact bottom plate away from the first rotating frame through a rotating shaft. A limiting assembly is fixedly connected to the side of the third rotating plate. A tensioning assembly adapted to the limiting assembly is fixedly connected to the side of the third rotating plate. The bottom of the contact bottom plate is fixedly connected to the top of the rotating chassis.

[0006] Preferably, the cable assembly includes a cable bracket. A first stepped hole is formed in the side of the cable bracket. A first fixing groove is formed in the inner wall at the top of the first stepped hole. A fixing block is slidably connected to the inner wall of the first fixing groove. A cable is fixedly connected to the top of the fixing block. The cable assembly further includes a reversing roller. The bottom of the reversing roller is fixedly connected to the top of the second fixing plate. The side of the cable bracket is fixedly connected to the side of the second fixing plate.

[0007] Preferably, the limiting component includes a limiting frame, a first magnet is fixedly connected to the side surface of the limiting frame, an operating handle is fixedly connected to the position of the limiting frame on one side of the first magnet, a first sliding strip is slidably connected to the side surface of the limiting frame, the limiting component further includes a second magnet and a third magnet, the side surface of the first sliding strip is fixedly connected to the side surface of the third rotating plate, and the side surfaces of the second magnet and the third magnet are both fixedly connected to the side surface of the third rotating plate.

[0008] Preferably, the tensioning component includes a fixed seat, a first rotating shaft is fixedly connected to the side surface of the fixed seat, a braking plate is sleeved and rotatably connected to the side surface of the first rotating shaft, a second spring is fixedly connected to the bottom of the braking plate, the end of the second spring away from the braking plate is fixedly connected to the side surface of the fixed seat, a fixed end of a spring telescopic rod is fixedly connected to the side surface of the fixed seat, a winding drum is fixedly connected to the movable end of the spring telescopic rod, a limiting baffle is fixedly connected to the top of the winding drum, a wire fixing component is fixedly connected to the side surface of the winding drum, the side surface of the fixed seat is fixedly connected to the side surface of the third rotating plate, and the top of the fixed seat is in contact with the inner wall of the limiting frame.

[0009] Preferably, the wire fixing assembly includes a wire fixing frame. An inclined positioning hole is formed in the side surface of the wire fixing frame. A fourth magnet is fixedly connected to the bottom of the inner wall of the inclined positioning hole. A second fixing groove is formed in the side surface of the inner wall of the inclined positioning hole. A twisting handle is fixedly connected to the inner wall of the wire fixing frame. The side surface of the wire fixing frame is fixedly connected to the side surface of the wire winding cylinder. The position frame moves to contact and move away from the side surface of the fixed seat. The first magnet on the side surface of the limit frame is cooperated with the second magnet and the third magnet at different positions to fix the side surface of the limit frame, so that the limit frame is stuck on the side surface of the fixed seat during the moving process. When tightening, the fixing block is placed into the inclined positioning hole. Due to the angle design of the inclined positioning hole, the wire is automatically wound around the side surface of the limit baffle. The fourth magnet and the second fixing groove are cooperated to fix the fixing block, so as to facilitate the placement of the second fixing plate. When the wire is fixed, manually twist the twisting handle. The twisting handle drives the wire winding cylinder to rotate. The wire winding cylinder rotates to compress the brake plate. The brake plate rotates along the first rotating shaft. The first fixing plate moves to generate pressure on the second spring, and then pushes the brake plate to engage with the inner wall of the wire winding cylinder in turn for braking, so that the wire winding cylinder rotates unidirectionally, pulls the wire for stretching, drives the wire winding cylinder to wind the second magnet, drives the wire to move, and tightens. At this time, the contact between the limit frame and the side surface of the fixed seat does not affect the rotation of the wire winding cylinder. When reverse rotation is required, move the limit frame. The limit frame moves out of the side surface of the fixed seat. At this time, push the wire winding cylinder to slide along the side surface of the fixed seat, so that the inner wall of the wire winding cylinder is misaligned with the brake plate and slides open, so that the brake plate stops engaging with the wire winding cylinder, drives the wire winding cylinder to rotate reversely, and is convenient for relaxation. When the wire winding cylinder slides along the side surface of the fixed seat, the wire winding cylinder moves to generate pressure on the spring telescopic rod. When relaxation is completed, release the wire winding cylinder. The wire winding cylinder automatically returns under the elastic force of the spring telescopic rod, so that the wire winding cylinder engages with the brake plate again to maintain braking.

[0010] Preferably, the fixing assembly includes a fixing bracket. A limit plate is fixedly connected to the top of the fixing bracket. A square spring rod is fixedly connected to the side surface of the fixing bracket. A connecting bracket is rotatably connected to the side surface of the fixing bracket through a rotating shaft. A porous plate is fixedly connected to the top of the connecting bracket. A sliding frame is fixedly connected to the top of the porous plate. A fixing device is slidably connected to the inner wall of the sliding frame.

[0011] Preferably, the side surface of the fixing bracket is fixedly connected to the top of the contact bottom plate through a bracket. The sliding frame is arranged on the side surface of the contact bottom plate.

[0012] Preferably, the fixing device includes a fixing base, a meshing strip is fixedly connected to the side of the fixing base, a fixed end of a telescopic rod is fixedly connected to the bottom of the fixing base, a movable end of the telescopic rod is fixedly connected to a rotating base, a connecting block is rotatably connected to the inner wall of the rotating base through a rotating shaft, a contact pad is fixedly connected to the side of the connecting block, a limiting rod adapted to the contact pad is fixedly connected to the side of the rotating base, a sliding groove is formed in the side of the fixing base, the fixing base is slidably connected to the inner wall of a sliding frame through the sliding groove, and a rack adapted to the meshing strip is formed in the inner wall of the sliding frame.

[0013] The present invention provides a knee joint fixing brace that is convenient for adjusting the tightness degree. It has the following beneficial effects: 1. For the knee joint fixing brace that is convenient for adjusting the tightness degree, a sliding sleeve is provided. The rotation of the sliding sleeve drives the rotation of the rotating shaft, the rotation of the rotating shaft drives the moving frame to rotate, and the rotation of the moving frame drives the calf bracket to move, so that the thigh and the calf are in different angular positions. Under the tension of the first spring, the sliding sleeve slides along the side of the rotating shaft, so that the second toothed ring meshes with the first toothed ring. Thus, after the sliding sleeve rotates to a suitable position, it maintains a braking state under the combined braking effect of the second toothed ring and the first toothed ring, so as to keep the moving frame at a fixed angle. When the angle needs to be adjusted, the sliding sleeve is pulled in a direction away from the first toothed ring, so that the first toothed ring and the second toothed ring are disengaged from meshing, so that the rotating shaft rotates automatically, so as to return the moving frame for convenient angle adjustment.

[0014] 2. For the knee joint fixing brace that is convenient for adjusting the tightness degree, the second fixing plate drives the second rotating frame to move, the second rotating frame drives the first rotating frame to move and drives the first fixing plate to move, so as to drive the side muscles of the thigh to be squeezed against the side of the third rotating plate, so as to fix the thigh part. The cooperation of the connecting rod between the first fixing plate and the second fixing plate increases the contact area with the thigh muscles, thereby enhancing the stability. Compared with the traditional fixing brace that relies on the deformation of the brace for squeezing and fixing, the flexibility of the brace fixing is increased, and it is convenient to make corresponding adjustments according to different situations. The wire is fixed to the inner wall of the wire rack through the fixing block, and the fixing block is fixed through the first fixing groove to prevent the fixing block from sliding out of the inner part of the first stepped hole during the fixing process, and the direction of the wire is turned through the reversing roller, so as to facilitate tightening and fixing.

[0015] 3. The knee joint fixing brace that is convenient for adjusting the tightness is provided with a limiting frame that moves to contact and move away from the side of the fixed seat. The first magnet on the side of the limiting frame is cooperated with the second magnet and the third magnet at different positions to fix the side of the limiting frame, so as to keep the limiting frame stuck on the side of the fixed seat during the movement. When tightening, the fixing block is placed into the internal of the inclined positioning hole, and due to the angle design of the inclined positioning hole, the pull wire automatically enters and winds around the side of the limiting baffle.

[0016] 4. The knee joint fixing brace that is convenient for adjusting the tightness is provided with a winding drum that rotates to compress the brake plate. The brake plate rotates along the first rotating shaft, and the first fixing plate moves to generate pressure on the second spring, which in turn pushes the brake plate to engage with the inner wall of the winding drum for braking, so that the winding drum rotates unidirectionally, pulling the pull wire for stretching, driving the winding drum to pull and wind the second magnet, driving the pull wire to move, and thus tightening. At this time, the contact between the limiting frame and the side of the fixed seat does not affect the rotation of the winding drum.

[0017] 5. The knee joint fixing brace that is convenient for adjusting the tightness is provided with a movable limiting frame, and the limiting frame moves out of the side of the fixed seat. At this time, the winding drum is pushed to slide along the side of the fixed seat, so that the inner wall of the winding drum is misaligned with the brake plate and slides open, so that the brake plate stops engaging with the winding drum, driving the winding drum to rotate in the reverse direction, which is convenient for relaxation. When the winding drum slides along the side of the fixed seat, the winding drum moves to generate pressure on the spring telescopic rod. After relaxation is completed, the winding drum is released, and the winding drum automatically returns to its original position under the elastic force of the spring telescopic rod, so that the winding drum engages with the brake plate again to maintain braking.

[0018] 6. The knee joint fixing brace that is convenient for adjusting the tightness is provided with a spring piece. The spring piece drives the engaging bar to move. The engaging bar moves to disengage from the braking on the side of the sliding frame, and the fixed base is slid along the inner wall of the sliding frame, driving the telescopic rod to move. The telescopic rod moves to drive the rotating base to move. The rotating base moves to drive the connecting block to move. The connecting block moves to drive the contact pad to move. The contact pad directly contacts the joint part to fix the joint position. And the contact pad rotates along the side of the rotating base to avoid blocking the line of sight of the fixed position. Through the setting of multiple groups of sliding frames, it is convenient to fix different positions. The connecting bracket rotates along the side of the fixed bracket, which is convenient for putting the knee part in. The rotation angle of the connecting bracket is limited by the limiting plate. After the connecting bracket rotates to the appropriate position, the square spring rod prevents reverse rotation to keep the fixed position of the connecting bracket, so as to ensure the fixation and extrusion of the contact pad on a specific part. Brief Description of the Drawings

[0019] Figure 1 Schematic structural diagram of the knee joint fixing brace for facilitating the adjustment of the tightness degree of the present invention; Figure 2 Schematic structural diagram of the rotating assembly of the present invention; Figure 3 Schematic structural diagram of the thigh assembly of the present invention; Figure 4 Schematic structural diagram of the wire pulling assembly of the present invention; Figure 5 Schematic structural diagram of the limiting assembly of the present invention; Figure 6 Schematic structural diagram of the tensioning assembly of the present invention; Figure 7 Schematic structural diagram of the wire fixing assembly of the present invention; Figure 8 Schematic structural diagram of the fixing assembly of the present invention; Figure 9 Schematic structural diagram of the fixing device of the present invention.

[0020] In the figure: 1, calf bracket; 2, rotating assembly; 3, thigh assembly; 4, fixing assembly; 201, rotating chassis; 202, first toothed ring; 203, rotating shaft; 204, sliding sleeve; 205, first spring; 206, through hole; 207, second toothed ring; 208, moving frame; 301, contact bottom plate; 302, first rotating frame; 303, first fixing plate; 304, second rotating frame; 305, second fixing plate; 306, wire pulling assembly; 307, third rotating plate; 308, limiting assembly; 309, tensioning assembly; 3061, wire pulling frame; 3062, first stepped hole; 3063, first fixing groove; 3064, fixing block; 3065, wire; 3066, reversing roller; 3081, limiting frame; 3082, first magnet; 3083, operating handle; 3084, first sliding bar; 3085, second magnet; 3086, third magnet; 3091, fixing seat; 3092, first rotating shaft; 3093, brake plate; 3094, second spring; 3095, spring telescopic rod; 3096, wire winding cylinder; 3097, limiting baffle; 3098, wire fixing assembly; 30981, wire fixing frame; 30982, obliquely positioned hole; 30983, fourth magnet; 30984, second fixing groove; 30985, twisting handle; 401, fixing bracket; 402, limiting plate; 403, square spring rod; 404, connecting bracket; 405, perforated plate; 406, sliding frame; 407, fixing device; 4071, fixing base; 4072, spring piece; 4073, meshing strip; 4074, telescopic rod; 4075, rotating base; 4076, connecting block; 4077, contact pad; 4078, limiting rod; 4079, chute. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figure 1 - Figure 2 , the present invention provides a technical solution: a knee joint fixing brace that is convenient to adjust the tightness, including a calf bracket 1, a rotating assembly 2 is fixedly connected to the top of the calf bracket 1, a thigh assembly 3 is fixedly connected to the top of the rotating assembly 2, and a fixing assembly 4 is fixedly connected to the side of the thigh assembly 3.

[0023] The calf bracket 1 limits and fixes the calf part. The rotating assembly 2 adjusts the angle between the calf bracket 1 and the thigh assembly 3 and remains stationary after the adjustment, which is beneficial to maintaining a stable posture at different angles, so as to fix the knee joint in different postures. The thigh assembly 3 fixes the thigh muscles and tightens the wire through the corresponding operating device. At the same time, the operation is simple and reliable during the process of tightening and loosening. Compared with traditional fastening methods such as magic tapes, it ensures the operation convenience while maintaining the fastening strength, maintains the same fastening during a long service cycle, and the process of replacing components is simple. The fixing assembly 4 precisely fixes the joint part, increasing the support for specific positions compared with traditional fixing braces.

[0024] The rotating assembly 2 includes a rotating base frame 201, a first toothed ring 202 is fixedly connected to the side of the rotating base frame 201, a rotating shaft 203 is rotatably connected to the inner wall of the first toothed ring 202, a sliding sleeve 204 is slidably connected to the side of the rotating shaft 203, a first spring 205 is fixedly connected to the inner wall side of the sliding sleeve 204, one end of the first spring 205 away from the sliding sleeve 204 is fixedly connected to the inner wall of the rotating shaft 203, a through hole 206 is opened at the top of the first spring 205, a second toothed ring 207 adapted to the first toothed ring 202 is fixedly connected to the side of the first spring 205, one end of the rotating shaft 203 away from the first spring 205 is fixedly connected to a moving frame 208, the side of the moving frame 208 is fixedly connected to the side of the calf bracket 1, and the top of the rotating base frame 201 is fixedly connected to the bottom of the thigh assembly 3.

[0025] Manually rotate the sliding sleeve 204. The rotation of the sliding sleeve 204 drives the rotation of the rotating shaft 203. The rotation of the rotating shaft 203 drives the moving frame 208 to rotate. The rotation of the moving frame 208 drives the calf bracket 1 to move, so that the thigh and calf are in different angular positions. Under the tension of the first spring 205, the sliding sleeve 204 slides along the side of the rotating shaft 203, so that the second gear ring 207 meshes with the first gear ring 202. Thus, after the sliding sleeve 204 rotates to a suitable position, it maintains a braking state under the cooperative braking effect of the second gear ring 207 and the first gear ring 202, so as to keep the moving frame 208 at a fixed angle. When the angle needs to be adjusted, pull the sliding sleeve 204 in a direction away from the first gear ring 202, so that the first gear ring 202 disengages from the second gear ring 207, so that the rotating shaft 203 rotates automatically, so as to return the moving frame 208 for angle adjustment.

[0026] Please refer to Figure 1 - Figure 4 , the present invention provides a technical solution: The thigh assembly 3 includes a contact bottom plate 301. The side of the contact bottom plate 301 is rotatably connected to a first rotating frame 302 through a rotating shaft. The side of the first rotating frame 302 is fixedly connected to a first fixing plate 303. The top of the first rotating frame 302 is rotatably connected to a second rotating frame 304 through a rotating shaft. The side of the second rotating frame 304 is fixedly connected to a second fixing plate 305. The side of the second fixing plate 305 is fixedly connected to a wire pulling assembly 306. The side of the contact bottom plate 301 away from the first rotating frame 302 is rotatably connected to a third rotating plate 307 through a rotating shaft. The side of the third rotating plate 307 is fixedly connected to a limiting assembly 308. The side of the third rotating plate 307 is fixedly connected to a tensioning assembly 309 adapted to the limiting assembly 308. The bottom of the contact bottom plate 301 is fixedly connected to the top of the rotating bottom frame 201.

[0027] The wire pulling assembly 306 includes a wire pulling frame 3061. A first stepped hole 3062 is formed in the side of the wire pulling frame 3061. A first fixing groove 3063 is formed in the top inner wall of the first stepped hole 3062. A fixing block 3064 is slidably connected to the inner wall of the first fixing groove 3063. A wire 3065 is fixedly connected to the top of the fixing block 3064. The wire pulling assembly 306 further includes a reversing roller 3066. The bottom of the reversing roller 3066 is fixedly connected to the top of the second fixing plate 305. The side of the wire pulling frame 3061 is fixedly connected to the side of the second fixing plate 305.

[0028] Fix the component corresponding to the cable pulling assembly 306 to the tensioning assembly 309. Pull the cable pulling assembly 306 through the tensioning assembly 309 to drive the cable pulling assembly 306 to move. The movement of the cable pulling assembly 306 drives the second fixing plate 305 to move. The second fixing plate 305 drives the second rotating frame 304 to move. The second rotating frame 304 drives the first rotating frame 302 to move and drives the first fixing plate 303 to move, thereby driving the lateral muscles of the thigh to squeeze against the side of the third rotating plate 307, so as to fix the thigh part. The cooperation of the connecting rod between the first fixing plate 303 and the second fixing plate 305 increases the contact area with the thigh muscles, thereby enhancing the stability. Compared with the traditional fixing brace that relies on the deformation of the brace for squeezing and fixing, the flexibility of the brace fixing is increased, which is convenient for corresponding adjustment according to different situations. The cable 3065 is fixed to the inner wall of the cable rack 3061 through the fixing block 3064. The fixing block 3064 is fixed through the first fixing groove 3063 to prevent the fixing block 3064 from sliding out of the inside of the first stepped hole 3062 during the fixing process, and the direction of the cable 3065 is turned by the reversing roller 3066, so as to facilitate the tightening and fixing.

[0029] Please refer to Figure 1 - Figure 7 , the present invention provides a technical solution: The limiting assembly 308 includes a limiting frame 3081. A first magnet 3082 is fixedly connected to the side of the limiting frame 3081. An operation handle 3083 is fixedly connected to the position of the limiting frame 3081 on one side of the first magnet 3082. A first sliding strip 3084 is slidably connected to the side of the limiting frame 3081. The limiting assembly 308 further includes a second magnet 3085 and a third magnet 3086. The side of the first sliding strip 3084 is fixedly connected to the side of the third rotating plate 307. The sides of the second magnet 3085 and the third magnet 3086 are both fixedly connected to the side of the third rotating plate 307.

[0030] The tensioning assembly 309 includes a fixed seat 3091. A first rotating shaft 3092 is fixedly connected to the side of the fixed seat 3091. A brake plate 3093 is sleeved and rotatably connected to the side of the first rotating shaft 3092. A second spring 3094 is fixedly connected to the bottom of the brake plate 3093. The end of the second spring 3094 away from the brake plate 3093 is fixedly connected to the side of the fixed seat 3091. The fixed end of a spring telescopic rod 3095 is fixedly connected to the side of the fixed seat 3091. The movable end of the spring telescopic rod 3095 is fixedly connected to a winding cylinder 3096. A limiting baffle 3097 is fixedly connected to the top of the winding cylinder 3096. A wire fixing assembly 3098 is fixedly connected to the side of the winding cylinder 3096. The side of the fixed seat 3091 is fixedly connected to the side of the third rotating plate 307. The top of the fixed seat 3091 contacts the inner wall of the limiting frame 3081.

[0031] The wire fixing assembly 3098 includes a wire fixing frame 30981. An inclined positioning hole 30982 is formed on the side surface of the wire fixing frame 30981. A fourth magnet 30983 is fixedly connected to the bottom of the inner wall of the inclined positioning hole 30982. A second fixing groove 30984 is formed on the side surface of the inner wall of the inclined positioning hole 30982. A twisting handle 30985 is fixedly connected to the inner wall of the wire fixing frame 30981. The side surface of the wire fixing frame 30981 is fixedly connected to the side surface of the wire winding cylinder 3096.

[0032] The movable limit frame 3081 moves to contact and move away from the side surface of the fixed seat 3091. The first magnet 3082 on the side surface of the limit frame 3081 is cooperated with the second magnet 3085 and the third magnet 3086 at different positions to fix the side surface of the limit frame 3081, so that the limit frame 3081 is stuck on the side surface of the fixed seat 3091 during the moving process. When tightening, the fixed block 3064 is placed into the inclined positioning hole 30982. Due to the angle design of the inclined positioning hole 30982, the wire 3065 automatically enters the side surface of the limit baffle 3097 for winding. The fourth magnet 30983 and the second fixing groove 30984 cooperate to fix the fixed block 3064, so as to facilitate the placement of the second fixing plate 305. After the wire 3065 is fixed, manually twist the twisting handle 30985. The twisting handle 30985 drives the wire winding cylinder 3096 to rotate. The wire winding cylinder 3096 rotates to compress the brake plate 3093. The brake plate 3093 rotates along the first rotating shaft 3092. The first fixing plate 303 moves to generate pressure on the second spring 3094, which in turn pushes the brake plate 3093 to engage with the inner wall of the wire winding cylinder 3096 for braking, so that the wire winding cylinder 3096 rotates in one direction, pulling the wire 3065 for stretching, driving the wire winding cylinder 3096 to pull and wind the second magnet 3085, driving the wire 3065 to move, and thus tightening. At this time, the contact between the limit frame 3081 and the side surface of the fixed seat 3091 does not affect the rotation of the wire winding cylinder 3096. When reverse rotation is required, move the limit frame 3081. The limit frame 3081 moves out of the side surface of the fixed seat 3091. At this time, push the wire winding cylinder 3096 to slide along the side surface of the fixed seat 3091, so that the inner wall of the wire winding cylinder 3096 is misaligned with the brake plate 3093 and slides open, so that the brake plate 3093 stops engaging with the wire winding cylinder 3096, driving the wire winding cylinder 3096 to rotate in the reverse direction, so as to facilitate relaxation. When the wire winding cylinder 3096 slides along the side surface of the fixed seat 3091, the wire winding cylinder 3096 moves to generate pressure on the spring telescopic rod 3095. After relaxation is completed, release the wire winding cylinder 3096. The wire winding cylinder 3096 automatically returns under the elastic force of the spring telescopic rod 3095, so as to re-engage the wire winding cylinder 3096 with the brake plate 3093 and maintain braking.

[0033] Please refer to Figure 1 - Figure 9 Figure 1 - Figure 9 , the present invention provides a technical solution: The fixing component 4 includes a fixing bracket 401. A limiting plate 402 is fixedly connected to the top of the fixing bracket 401. A square spring rod 403 is fixedly connected to the side of the fixing bracket 401. A connecting bracket 404 is rotatably connected to the side of the fixing bracket 401 through a rotating shaft. A perforated plate 405 is fixedly connected to the top of the connecting bracket 404. A sliding frame 406 is fixedly connected to the top of the perforated plate 405. A fixing device 407 is slidably connected to the inner wall of the sliding frame 406. The side of the fixing bracket 401 is fixedly connected to the top of the contact bottom plate 301 through a bracket. The sliding frame 406 is arranged on the side of the contact bottom plate 301.

[0034] The fixing device 407 includes a fixing base 4071. A meshing bar 4073 is fixedly connected to the side of the fixing base 4071. The fixed end of a telescopic rod 4074 is fixedly connected to the bottom of the fixing base 4071. The movable end of the telescopic rod 4074 is fixedly connected to a rotating base 4075. A connecting block 4076 is rotatably connected to the inner wall of the rotating base 4075 through a rotating shaft. A contact pad 4077 is fixedly connected to the side of the connecting block 4076. A limiting rod 4078 adapted to the contact pad 4077 is fixedly connected to the side of the rotating base 4075. A sliding groove 4079 is formed in the side of the fixing base 4071. The fixing base 4071 is slidably connected to the inner wall of the sliding frame 406 through the sliding groove 4079. A rack adapted to the meshing bar 4073 is formed in the inner wall of the sliding frame 406.

[0035] Manually pinch the spring piece 4072, the spring piece 4072 drives the meshing bar 4073 to move. The meshing bar 4073 moves to disengage the braking with the side of the sliding frame 406, and the fixing base 4071 is slid along the inner wall of the sliding frame 406, thereby driving the telescopic rod 4074 to move. The telescopic rod 4074 moves to drive the rotating base 4075 to move. The rotating base 4075 moves to drive the connecting block 4076 to move. The connecting block 4076 moves to drive the contact pad 4077 to move. The contact pad 4077 directly contacts the joint part, thereby fixing the joint position. And the contact pad 4077 rotates along the side of the rotating base 4075, thereby avoiding blocking the sight of the fixed position. And through the setting of multiple groups of sliding frames 406, it is convenient to fix different positions. By rotating the connecting bracket 404 along the side of the fixing bracket 401, it is convenient to put the knee part in. And the rotation angle of the connecting bracket 404 is limited by the limiting plate 402. After the connecting bracket 404 rotates to a suitable position, the square spring rod 403 prevents reverse rotation, thereby maintaining the fixed position of the connecting bracket 404, so as to ensure the fixing and extrusion of the contact pad 4077 on a specific part.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and defined, are implemented according to the conventional means in the art.

Claims

1. A knee joint fixation brace that is convenient for adjusting the tightness degree, characterized in that: It includes a calf bracket (1), a rotating component (2) is fixedly connected to the top of the calf bracket (1), a thigh component (3) is fixedly connected to the top of the rotating component (2), and a fixing component (4) is fixedly connected to the side of the thigh component (3); The rotating component (2) includes a rotating chassis (201), a first toothed ring (202) is fixedly connected to the side of the rotating chassis (201), a rotating shaft (203) is rotatably connected to the inner wall of the first toothed ring (202), a sliding sleeve (204) is slidably connected to the side of the rotating shaft (203), a first spring (205) is fixedly connected to the inner side of the sliding sleeve (204), one end of the first spring (205) away from the sliding sleeve (204) is fixedly connected to the inner wall of the rotating shaft (203), a through hole (206) is opened at the top of the first spring (205), a second toothed ring (207) adapted to the first toothed ring (202) is fixedly connected to the side of the first spring (205), a moving frame (208) is fixedly connected to the end of the rotating shaft (203) away from the first spring (205), the side of the moving frame (208) is fixedly connected to the side of the calf bracket (1), and the top of the rotating chassis (201) is fixedly connected to the bottom of the thigh component (3).

2. The knee joint fixing brace convenient for adjusting the tightness degree according to claim 1, wherein: The thigh component (3) includes a contact bottom plate (301), a first rotating frame (302) is rotatably connected to the side of the contact bottom plate (301) through a rotating shaft, a first fixing plate (303) is fixedly connected to the side of the first rotating frame (302), a second rotating frame (304) is rotatably connected to the top of the first rotating frame (302) through a rotating shaft, a second fixing plate (305) is fixedly connected to the side of the second rotating frame (304), a wire-pulling component (306) is fixedly connected to the side of the second fixing plate (305), a third rotating plate (307) is rotatably connected to the side of the contact bottom plate (301) away from the first rotating frame (302) through a rotating shaft, a limiting component (308) is fixedly connected to the side of the third rotating plate (307), a tensioning component (309) adapted to the limiting component (308) is fixedly connected to the side of the third rotating plate (307), and the bottom of the contact bottom plate (301) is fixedly connected to the top of the rotating chassis (201).

3. The knee joint fixation brace convenient for adjusting the tightness according to claim 2, characterized in that: The wire-pulling component (306) includes a wire-pulling frame (3061), a first stepped hole (3062) is opened on the side of the wire-pulling frame (3061), a first fixing groove (3063) is opened at the top of the inner wall of the first stepped hole (3062), a fixing block (3064) is slidably connected to the inner wall of the first fixing groove (3063), a wire (3065) is fixedly connected to the top of the fixing block (3064), the wire-pulling component (306) further includes a reversing roller (3066), the bottom of the reversing roller (3066) is fixedly connected to the top of the second fixing plate (305), and the side of the wire-pulling frame (3061) is fixedly connected to the side of the second fixing plate (305).

4. The knee joint fixing brace that is convenient for adjusting the tightness according to claim 2, characterized in that: The limiting component (308) includes a limiting frame (3081). A first magnet (3082) is fixedly connected to the side surface of the limiting frame (3081). An operating handle (3083) is fixedly connected to the position of the limiting frame (3081) on one side of the first magnet (3082). A first sliding bar (3084) is slidably connected to the side surface of the limiting frame (3081). The limiting component (308) further includes a second magnet (3085) and a third magnet (3086). The side surface of the first sliding bar (3084) is fixedly connected to the side surface of the third rotating plate (307). The side surfaces of the second magnet (3085) and the third magnet (3086) are both fixedly connected to the side surface of the third rotating plate (307).

5. The knee joint fixation brace for facilitating adjustment of the tightness degree according to claim 2, wherein: The tensioning component (309) includes a fixed seat (3091). A first rotating shaft (3092) is fixedly connected to the side surface of the fixed seat (3091). A brake plate (3093) is sleeved and rotatably connected to the side surface of the first rotating shaft (3092). A second spring (3094) is fixedly connected to the bottom of the brake plate (3093). One end of the second spring (3094) away from the brake plate (3093) is fixedly connected to the side surface of the fixed seat (3091). The fixed end of a spring telescopic rod (3095) is fixedly connected to the side surface of the fixed seat (3091). The movable end of the spring telescopic rod (3095) is fixedly connected to a winding cylinder (3096). A limiting baffle (3097) is fixedly connected to the top of the winding cylinder (3096). A wire fixing component (3098) is fixedly connected to the side surface of the winding cylinder (3096). The side surface of the fixed seat (3091) is fixedly connected to the side surface of the third rotating plate (307). The top of the fixed seat (3091) is in contact with the inner wall of the limiting frame (3081).

6. The knee joint fixing brace that is convenient for adjusting the tightness according to claim 5, wherein: The wire fixing component (3098) includes a wire fixing frame (30981). An inclined positioning hole (30982) is formed in the side surface of the wire fixing frame (30981). A fourth magnet (30983) is fixedly connected to the bottom of the inner wall of the inclined positioning hole (30982). A second fixing groove (30984) is formed in the side surface of the inner wall of the inclined positioning hole (30982). A twisting handle (30985) is fixedly connected to the inner wall of the wire fixing frame (30981). The side surface of the wire fixing frame (30981) is fixedly connected to the side surface of the winding cylinder (3096).

7. The knee joint fixing brace convenient for adjusting the tightness degree according to claim 1, characterized in that: The fixing component (4) includes a fixing bracket (401). A limiting plate (402) is fixedly connected to the top of the fixing bracket (401). A square spring rod (403) is fixedly connected to the side surface of the fixing bracket (401). A connecting bracket (404) is rotatably connected to the side surface of the fixing bracket (401) through a rotating shaft. A porous plate (405) is fixedly connected to the top of the connecting bracket (404). A sliding frame (406) is fixedly connected to the top of the porous plate (405). A fixing device (407) is slidably connected to the inner wall of the sliding frame (406).

8. The knee joint fixing brace convenient for adjusting the tightness according to claim 7, characterized in that: The side of the fixed bracket (401) is fixedly connected to the top of the contact bottom plate (301) through a bracket, and the sliding frame (406) is arranged on the side of the contact bottom plate (301).

9. The knee joint fixing brace that is convenient for adjusting the tightness according to claim 7, characterized in that: The fixing device (407) includes a fixed base (4071). A meshing bar (4073) is fixedly connected to the side of the fixed base (4071). The fixed end of a telescopic rod (4074) is fixedly connected to the bottom of the fixed base (4071). The movable end of the telescopic rod (4074) is fixedly connected to a rotating base (4075). A connecting block (4076) is rotatably connected to the inner wall of the rotating base (4075) through a rotating shaft. A contact pad (4077) is fixedly connected to the side of the connecting block (4076). A limiting rod (4078) adapted to the contact pad (4077) is fixedly connected to the side of the rotating base (4075). A chute (4079) is formed in the side of the fixed base (4071). The fixed base (4071) is slidably connected to the inner wall of the sliding frame (406) through the chute (4079). A rack adapted to the meshing bar (4073) is formed in the inner wall of the sliding frame (406).

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