CN114587735B

CN114587735B - Limit adjusting connecting rod device and lower limb support

Info

Publication number: CN114587735B
Application number: CN202011403006.5A
Authority: CN
Inventors: 东人; 辛小康; 梁哲; 黄欣
Original assignee: Shenzhen Xeno Dynamics Power Technology Co ltd
Current assignee: Shenzhen Xeno Dynamics Power Technology Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2023-06-20
Anticipated expiration: 2040-12-04
Also published as: CN114587735A; WO2022116244A1

Abstract

The application discloses a spacing adjusting connecting rod device and lower limb brace, comprising; a housing; a first bracket: is arranged on the shell; and a second bracket: the second bracket is arranged on the shell and is connected with the first bracket through a reverse four-bar linkage, and the second bracket moves relative to the first bracket and the shell respectively; limiting device: the device is arranged on the shell and positioned in the middle of the first bracket and the second bracket, and when the first bracket or the second bracket moves relative to the shell, the device is abutted against the first bracket and the second bracket to limit the maximum amplitude of the movement of the first bracket or the second bracket. According to the adjustable knee joint adjusting device, the replaceable or adjustable limiting adjusting connecting rod device is arranged, the relative angles of the upper bracket and the lower bracket can be adjusted according to the knee joint conditions of different people, so that the lower limb support is stronger in adaptability, patients in different leg rehabilitation periods are applicable, and the rehabilitation cost of the patients is saved.

Description

Limit adjusting connecting rod device and lower limb support

Technical Field

The invention relates to the technical field of knee pads, in particular to a limiting and adjusting connecting rod device and a lower limb support.

Background

At present, along with the improvement of the living standard of substances, more and more people select sports as their hobbies, and the country also pays more attention to sports, and more people are trained into sports fitness from small to small. Many ordinary people do not pay attention to exercise at ordinary times, exercise injury is easily caused by excessive exercise or carelessness, and exercise health people continuously challenge new actions and new difficulties because of the need of the new actions and the new difficulties, although the exercise is guided by postscience, accidents are easy to occur, and exercise accidents such as ligament strain or fracture are easy to occur to legs.

Because the ligament has repairable growth characteristic, it is required to do rehabilitation training in the later stage to fix, among the prior art, there is the rehabilitation equipment that is specific to shank, say rehabilitation machine, or wearable low limbs brace, rehabilitation machine is because equipment is big, with high costs, intelligence is at rehabilitation center fixed point training, low limbs concrete volume is little, light in weight, can wear on the human body, by widely applying outdoor rehabilitation training, but the regulation mode of current low limbs brace is simple, can not carry out the regulation of laminating more according to different individual differences, make the knee pad wear uncomfortable, the laminating is poor, lead to the protection effect poor, and it is not adjustable to spacing angle regulation to knee joint part, or adjust through the size of trading the cushion, the regulation mode is complicated, and the knee joint of knee pad does not have elastic buffer function, lead to wearing comfort not high.

Disclosure of Invention

The application discloses a spacing adjustment link device and lower limb brace, in one aspect, the application discloses a spacing adjustment link device comprising;

a housing;

a first bracket: is arranged on the shell;

and a second bracket: the second bracket is arranged on the shell and is connected with the first bracket through a reverse four-bar linkage, and the second bracket moves relative to the first bracket and the shell respectively;

limiting device: the device is arranged on the shell and positioned in the middle of the first bracket and the second bracket, and when the first bracket or the second bracket moves relative to the shell, the device is abutted against the first bracket and the second bracket to limit the maximum amplitude of the movement of the first bracket or the second bracket.

Optionally, the limiting device is detachably fixed on the shell through a screw, and the limiting device with different radians and lengths is arranged between the first bracket and the second bracket so as to adjust the maximum amplitude of the relative motion of the first bracket and the second bracket.

Optionally, the anti-four connecting rod includes first support axle, second support axle, connecting rod, first connecting rod axle and second connecting rod axle, first support axle is fixed respectively on the casing with the second support axle is fixed respectively in the through-hole of first support and second support, so that first support with the second support is round first support axle or second support axle rotates, first connecting rod axle and second connecting rod axle set up respectively the both ends of connecting rod, and connect respectively first support and second support, the connecting wire of first support axle and second support axle with the extending direction cross arrangement of connecting rod to form anti-four connecting rod structure.

Optionally, the stop device includes elasticity buffer block, slider and kicking block, be provided with the recess of holding elasticity buffer block on the casing, the slider holding is in the recess, kicking block one end is passed through the screw fixation on the casing, the other end inserts in the recess, with the slider contacts.

Optionally, the top block is provided with a through hole for inserting the screw, the through hole is in a strip shape, and the position of the sliding block in the groove is adjusted by the screw being located at different positions of the through hole, so that the position of the limiting device is adjusted.

Optionally, the stop device is continuous limit structure, includes:

toggle the key: a first boss and a second boss are arranged;

large meshing teeth: the first boss on the toggle button is meshed with the large meshing teeth so as to limit the position of the toggle button;

small meshing teeth: the second boss on the toggle button is meshed with the small meshing teeth so as to limit the position of the toggle button, the large meshing teeth are mutually coupled with the small meshing teeth, the first boss is meshed with the large meshing teeth, and the second boss is meshed with the small meshing teeth.

Optionally, a cavity is formed in the shell, the length of the cavity is the adjusting range of the toggle button, the large meshing teeth and the small meshing teeth are respectively arranged at the positions of the cavity, the toggle button penetrates through the cavity, the first boss on the toggle button is meshed with the large meshing teeth, and the second boss on the toggle button is meshed with the small meshing teeth.

On the other hand, the application discloses a low limbs brace, including above-mentioned arbitrary one spacing regulation connecting rod device to and the knee-pad body, spacing regulation connecting rod device is provided with two, installs respectively the left and right sides limit of knee-pad body.

Optionally, the knee pad body is last still to be provided with hinge means, hinge means includes first frame clamp, second frame clamp, connecting axle and adjusting part, first frame clamp with first support or second leg joint, the second frame clamp with leg joint on the knee pad body, first frame clamp is articulated as an organic wholely through the connecting axle with the second frame clamp, adjusting part sets up respectively on first frame clamp and second frame clamp, adjusts adjusting part makes contained angle relative motion between first frame clamp and the second frame clamp to carry out the angle modulation.

Optionally, the adjusting part includes sliding block and top nail, be provided with on the sliding block with the helicitic texture of top nail adaptation, the sliding block sets up in the second frame presss from both sides, is provided with the extension piece on the first frame presss from both sides, is provided with the holding on the extension piece the first through-hole of top nail, the top nail pass behind the first through-hole with the helicitic texture adaptation in the sliding block is screwed, through adjusting the top nail screw in the penetration of helicitic texture of sliding block, the regulation first frame presss from both sides with angle between the second frame presss from both sides.

Optionally, the knee pad body is further provided with a folding snap fastener, the folding snap fastener is used for installing and detaching the binding belt on the knee pad body, the folding snap fastener comprises a first connecting piece and a second connecting piece, a first hook is arranged on the first connecting piece, a rotating piece is arranged on the second connecting piece, the rotating piece rotates on the second connecting piece by taking a first connecting rod as an axis, one end of the rotating piece is provided with a second connecting rod, when the second connecting rod is hung on the first hook, the second connecting piece and the rotating piece rotate to be in a straight line, and the first connecting piece and the second connecting piece are connected and locked; the first connecting piece is provided with a first magnet block, the second connecting piece is provided with a second magnet block, and when the first connecting piece is connected and locked with the second connecting piece, the first magnet block and the second magnet block are adsorbed together.

Optionally, the folding button is further provided with a locking buckle, the locking buckle includes a movable part and a lock column, the movable part is arranged on the rotating part, the lock column is arranged on the first connecting part, and the movable part slides or rotates to enable the movable part to be locked with the lock column.

Optionally, the knee pad body further includes a leg cuff assembly for adjusting a width of the leg rest, the leg cuff assembly comprising: the device comprises a first adjusting hoop, a second adjusting hoop, a gear, an adjusting knob and a shaft; one end of the shaft is connected with the adjusting knob, the other end of the shaft is connected with the gear, rack structures are respectively arranged on the first adjusting hoop and the second adjusting hoop, the gear is clamped between the rack structures of the first adjusting hoop and the second adjusting hoop to slide left and right, the interval position between the first adjusting hoop and the second adjusting hoop is adjusted, and therefore the width between leg supports connected with the first adjusting hoop and the second adjusting hoop respectively is adjusted.

Optionally, the adjusting knob comprises a knob cover, a ratchet wheel, a pawl wheel and a poking wheel, the ratchet wheel is arranged on the mounting plate, and the inner edge of the ratchet wheel is of a ratchet structure; the ratchet wheel is arranged in the ratchet wheel and is matched with the ratchet structure, the ratchet wheel comprises a main body part and a cantilever pawl which is fixedly connected with the main body part and has elasticity, the main body part is rotationally connected with the shaft, the shifting wheel is fixedly connected with the shaft, the shifting wheel is matched with the ratchet wheel, the shifting wheel is rotated positively, the shifting wheel drives the cantilever pawl to be close to the main body part, the cantilever pawl is separated from the ratchet structure, the shifting wheel is rotated reversely, and the cantilever pawl is in sliding butt joint with the ratchet structure.

According to the technical scheme, through the replaceable or adjustable limiting and adjusting connecting rod device, the relative angles of the upper bracket and the lower bracket can be adjusted according to the knee joint conditions of different people, so that the lower limb support is stronger in adaptability, patients in different leg rehabilitation periods are applicable, and the rehabilitation cost of the patients is saved. Simultaneously through setting up the knee device position that hinge means made low limbs brace and knee-pad body hookup location can be according to patient's demand angle regulation, set up folding snap fastener, make the bandage installation more convenient with dismantle, set up leg hoop subassembly, make the knee-pad body dress more easily, and be fit for the people of different shank sizes, simple structure wears comfortablely.

Drawings

FIG. 1 is a schematic view of a limit adjustment linkage of a first embodiment;

FIG. 2 is a schematic view of a limiting device according to a first embodiment;

FIG. 3 is a schematic view of a limit adjustment linkage of a second embodiment;

FIG. 4 is a schematic view of a third embodiment of a spacing adjustment linkage assembly;

FIG. 5 is an exploded view of a third embodiment of a limit adjustment linkage;

FIG. 6 is a schematic diagram of a lower limb brace assembly;

FIG. 7 is a schematic view of a hinge assembly;

FIG. 8 is an exploded view of the hinge assembly;

FIG. 9 is a folding snap assembly construction;

FIG. 10 is an exploded view of a folding snap fastener;

FIG. 11 is a leg cuff assembly combination diagram;

FIG. 12 is an exploded view of the leg cuff assembly;

figure 13 is a schematic view of the leg cuff assembly secured to the leg.

Detailed Description

In order to facilitate an understanding of the present invention, the lower limb brace and its detection mechanism will be more fully described with reference to the accompanying drawings. Preferred embodiments of the lower limb brace and its detection mechanism are shown in the drawings. However, the knee brace apparatus and its detection mechanism may be implemented in many different forms and are not limited to the embodiments described herein. Rather, the purpose of these embodiments is to provide a more thorough and complete disclosure of the lower limb brace and its detection mechanism.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the lower extremity brace and its detection mechanism is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, in one aspect, the present application discloses a limit adjustment link device, which includes a housing 10, a first bracket 20, a second bracket 30, and a limit device 40, where the first bracket 20 and the second bracket 30 are respectively disposed on two opposite sides of the housing 10; the second bracket 30 is connected with the first bracket 20 through an inverse four-bar linkage 50, and the second bracket 30 moves relative to the first bracket 20 and the housing 30 respectively. The limiting device 40 is mounted on the housing 10 and located in the middle of the first bracket 20 and the second bracket 30, and abuts against the first bracket 20 and the second bracket 30 when the first bracket 20 or the second bracket 30 moves relative to the housing 10, so as to limit the maximum amplitude of the movement of the first bracket 20 or the second bracket 20.

In an embodiment, the anti-four link 50 includes a first bracket shaft 51, a second bracket shaft 52, a link 53, a first link shaft 54 and a second link shaft 55, wherein the first bracket shaft 51 and the second bracket shaft 52 are respectively fixed on the housing 10 and respectively inserted into through holes of the first bracket 20 and the second bracket 30 to rotate the first bracket 20 and the second bracket 30 around the first bracket shaft 51 or the second bracket shaft 52, the first link shaft 51 and the second link shaft 52 are respectively disposed at both ends of the link 53 and respectively connect the first bracket 20 and the second bracket 3, and a connection line of the first bracket shaft 51 and the second bracket shaft 52 is disposed crossing an extending direction of the link 53 to form an anti-four link structure.

In one embodiment, the limiting device 40 is detachably fixed on the housing 10 by a screw 41, and is installed between the first bracket 20 and the second bracket 30 by providing limiting devices with different radians and lengths, so as to adjust the maximum amplitude of the relative movement of the first bracket 20 and the second bracket 30.

In an embodiment, referring to fig. 2, the limiting device 40 is provided with a through hole 42 through which the screw 41 passes, one end of the limiting device 40 contacts the connecting rod 53, and the other end contacts the first bracket 20, so that one end of the limiting device 40 is provided with a first groove structure 43 of an L shape as shown in fig. 2, so as to facilitate the movement of the connecting rod 53, the other end of the limiting device 40 is provided with a second groove structure 44 of an L shape opposite to the first groove structure 43, and an arc groove 45 is provided at one side of the limiting device 40, and the arc groove 45 is adapted to the edge of the first bracket 20, so as to be convenient for abutting against the first bracket 20.

In an embodiment, the limiting device 40 with the above structure is provided with a plurality of specifications, each specification is different from the radian, and the length is different from the radian, and the limiting device is mounted and dismounted by the screws 41 to realize the limiting of the first bracket 20 and the second bracket 30 at different angles.

In an embodiment, referring to fig. 3, another limiting device 40B is disclosed, which includes an elastic buffer block 41B, a slider 42B and a top block 43B, a groove for accommodating the elastic buffer block 41B is provided on the housing 10, the slider 42B is accommodated in the groove, one end of the top block 43B is fixed on the housing 10 by a screw 44B, and the other end is inserted into the groove to contact with the slider 42B.

In an embodiment, the top block 43B is provided with a through hole 431B for inserting the screw 44B, the through hole 431B is in a strip shape, the position of the slide block 42B in the groove is adjusted by the screw 44B being located at a different position of the through hole 431B, and when the outer edge of the groove for accommodating the slide block 42B on the housing 10 abuts against the top block 43B, the position of the limiting device 40 for limiting the first bracket 20 and the second bracket 30 is adjusted.

In another embodiment, referring to fig. 4 to 5, the limiting device 40C is a continuous limiting structure, and includes a toggle button 41C fixed on a bracket 413, a large engaging tooth 42C and a small engaging tooth 43C, where the toggle button 41C is provided with a first boss 411C and a second boss 412C; the large engaging tooth 42C is arranged at one side of the shell, and the first boss 411C on the toggle button 41C is engaged with the large engaging tooth 42C to limit the position of the toggle button 41C; the small engaging teeth 43C are disposed on the other side of the housing 10 and are fixed on the housing 10 by the screw set 44C, the second boss 412C on the toggle button 41C engages with the small engaging teeth 43C to limit the position of the toggle button 41C, the large engaging teeth 42C are coupled with the small engaging teeth 43C, the first boss 411C engages with the large engaging teeth 42C, and the second boss 412C engages with the small engaging teeth 43C.

In this embodiment, a cavity 11C is formed in the housing 10C, the length of the cavity 11C is the adjustment range of the toggle button, the large engaging teeth 42C and the small engaging teeth 43C are respectively disposed at the positions of the cavity 11C, the toggle button 41C passes through the cavity, the first boss 411C on the toggle button 41C is engaged with the large engaging teeth 42C, and the second boss 412C on the toggle button 41C is engaged with the small engaging teeth 43C.

Above-mentioned structure is through stirring button 41C's position to adjust the relative rotation position of setting up first support 20 or second support 30 in stop device 40 both sides, reach the purpose of carrying out the low limbs brace and adjusting according to different individual conditions, make low limbs brace adaptability stronger, the patient of different shank convalescence periods all is suitable for, practiced thrift patient's recovered cost, to the manufacturer, need not to set up the low limbs brace of different models and angles according to the condition of the patient of different convalescence periods, need not to design many sets of moulds, thereby make manufacturing cost lower.

In an embodiment, referring to fig. 6, a lower limb brace is disclosed, which includes the above-mentioned limit adjustment link device, the above-mentioned limit adjustment link device is installed in the knee-pad shell 100, and the knee-pad body 200, and two limit adjustment link devices are provided, and are installed on the left and right sides of the knee-pad body 200 respectively.

In an embodiment, referring to fig. 7-8, the knee pad body is further provided with a hinge device 210, the hinge device 210 is also symmetrically disposed on the left and right sides of the knee pad body 200 by rivets 215, the hinge device 210 includes a first frame 211, a second frame 212, a connecting shaft 213, and an adjusting component 214, the first frame 211 is connected with the first frame 20 or the second frame 30, the second frame 212 is connected with a leg support 220 on the knee pad body 200, the first frame 211 and the second frame 212 are hinged and connected into a whole by the connecting shaft 213, the adjusting component 214 is disposed on the first frame 211 and the second frame 212, respectively, and the adjusting component 214 is adjusted to enable the included angle between the first frame 21 and the second frame 212 to move relatively so as to perform angle adjustment.

In an embodiment, the adjusting assembly 214 includes a sliding block 2142 and a top screw 2141, the sliding block 2142 is provided with a threaded structure adapted to the top screw 2141, the sliding block 2142 is disposed in the second frame clip 212, the first frame clip 211 is provided with an extension block 2111, the extension block 2111 is provided with a first through hole 2112 for accommodating the top screw 2141, the top screw 2141 is screwed with the threaded structure in the sliding block 2142 after passing through the first through hole 2112, and an angle between the first frame clip 211 and the second frame clip 212 is adjusted by adjusting a depth of screwing the top screw 2141 into the threaded structure of the sliding block 2142.

The hinge device 210 is provided with two opposite rotating frame clamps which are hinged with each other, and the two frame clamps are provided with the adjusting component for adjusting the angle between the two frame clamps, so that the angle of the knee pad body 200 connected with the adjusting component is adjusted, the lower limb support is more fit with the knee, the wearing comfort is stronger, the suitability is also stronger, and the support and the adjusting function of the lower limb support to the human body are more facilitated.

In an embodiment, referring to fig. 9 and 10, a folding snap fastener 230 is further provided on the knee pad body for installing and removing the strap 220 on the knee pad body 200, the folding snap fastener 230 includes a first connecting member 231 and a second connecting member 232, a first hook 2311 is provided on the first connecting member 231, a rotating member 233 is provided on the second connecting member 232, the rotating member 233 rotates on the second connecting member 232 with a first connecting rod 2331 as an axis, a second connecting rod 2332 is provided at one end of the rotating member 233, and when the second connecting rod 2332 is hung on the first hook 2331 and the second connecting member 232 and the rotating member 233 rotate to be in a straight line, the first connecting member 231 is connected and locked with the second connecting member 232; the first connecting member 231 is provided with a first magnet block 2312, the rotating member 233 is provided with a second magnet block 2333, and when the first connecting member 231 is connected and locked with the second connecting member 232, the first magnet block 2312 and the second magnet block 2333 are adsorbed together.

Further, the folding snap fastener 230 is further provided with a locking buckle 240, the locking buckle 240 includes a movable member 241 and a locking post 242, the movable member 241 is disposed on the rotating member 233, the locking post 242 is disposed on the first connecting member 231, and in an embodiment, a hook for locking a groove or a through hole on the locking post 242 is disposed on the movable member 241, so that the movable member 241 is locked with the locking post 242 when the movable member 241 slides or rotates back and forth.

The folding buckle structure 230 is provided with a hook 2321 on the second connecting piece 232, and a rotating piece 233 is arranged on the second connecting piece 232, so that the second connecting piece 232 arranged on the binding belt 220 can be flexibly connected and fixed with the first connecting piece 231 on the lower limb support, and the thigh can be bound on the lower limb support; the locking buckle 240 is arranged, so that the folding snap fastener 230 formed by the first connecting piece 231 and the second connecting piece 232 is locked more firmly; the magnet structure is arranged to further lock, so that the knee pad locking effect is enhanced.

In an embodiment, the upper and lower positions of the knee pad body 220 are the opening structures 221, and are connected through the connecting blocks 240, and due to the thickness difference between the thigh 1 and the shank 2 of the human body, the opening structures 221 can be connected by replacing the connecting blocks 240 with different lengths, and the knee pad body 220 and the legs of the human body can be fixed. In one embodiment, locking structures may be provided on the knee pad body 220 and the connection block 240 to perform locking, and the locking structures include a hook structure, a chute structure, or the like, which are not limited herein.

In another embodiment, the opening structure 221 may be provided with a leg cuff assembly 250 with adjustable connection length to achieve wearing and fixing of legs of different thickness, referring specifically to fig. 11-13, the knee pad body 220 further includes a leg cuff assembly 250 for adjusting the width of the opening structure 221 on the knee pad body 220, and the leg cuff assembly 250 includes: a first adjustment collar 251, a second adjustment collar 252, a gear 253, an adjustment knob 254, and a shaft 255; one end of the shaft 255 is connected to the adjusting knob 254, the other end is connected to the gear 253, rack structures are respectively provided on the first adjusting hoop 251 and the second adjusting hoop 252, and the gear 253 is clamped between the rack structures of the first adjusting hoop 251 and the second adjusting hoop 252 to slide left and right so as to adjust the interval position between the first adjusting hoop 251 and the second adjusting hoop 252, thereby adjusting the width of the opening structure 221 on the knee pad body 220 connected to the first adjusting hoop 251 and the second adjusting hoop 252 respectively. Further, a wire pulling wheel 2531 is further disposed on the gear 253 and is fixed on the shaft 255 in tandem with the gear 253 to protect the outer surface of the gear 253.

In one embodiment, the adjustment knob 254 is disposed on a mounting plate 256, a sliding slot 2561 is formed in the mounting plate 256, and a rack structure provided on the first adjustment collar 251 and the second adjustment collar 252 is capable of sliding within the sliding slot 2561. The adjusting knob 254 further comprises a knob cover 2541, a ratchet wheel 2542, a pawl wheel 2543 and a dial wheel 2544, wherein the ratchet wheel 2542 is fixedly connected with the mounting plate 256, and the inner edge of the ratchet wheel 2542 is in a ratchet structure. Pawl wheel 2543 is disposed within ratchet wheel 2542 to cooperate with the ratchet tooth structure, pawl wheel 2543 includes a main body portion 25431 and a cantilevered pawl 25432 fixedly attached to main body portion 25431 and having resiliency. The main body 25431 is rotatably coupled to the shaft 255, and the dial 2544 is fixedly coupled to the shaft 255. The thumb wheel 2544 cooperates with the pawl wheel 2543 to rotate the thumb wheel 2544 in a forward direction, the thumb wheel 2544 driving the cantilever pawl 25432 closer to the body portion 25431, disengaging the cantilever pawl 25432 from the ratchet tooth structure. Reverse rotation of thumb wheel 2544, cantilever pawl 25432 slides against the ratchet arrangement.

Pawl wheel 2543 cooperates with the ratchet-toothed structure of ratchet wheel 2542, and cantilever pawl 25432 is snap-fitted to ratchet wheel 2542 when thumb wheel 2544 is relatively stationary. Forward rotation of thumb wheel 2544, thumb wheel 2544 brings cantilever pawl 25432 adjacent body portion 25431, disengaging cantilever pawl 25432 from the ratchet-toothed structure, and forward rotation of thumb wheel 2544 requires a force to overcome the resiliency of cantilever pawl 25432. When the thumb wheel 2544 is again stationary, the cantilever pawl 25432 returns under elastic action. Reverse rotation of thumb wheel 2544, with cantilever pawl 25432 slidably abutting the ratchet arrangement, also requires that reverse rotation of thumb wheel 2544 provide a force that overcomes the resiliency of cantilever pawl 25432. The user can rotate the adjustment knob cover 2541 to overcome the resistance caused by the pawl wheel 2543, so that the gear 253 is rotated, and the distance between the first adjustment hoop 251 and the second adjustment hoop 252 is adjusted, so that the tightness of the leg hoop assembly 250 is adjusted. The user can also directly break or press the first adjusting hoop 251 and the second adjusting hoop 252 to adjust the tightness, and the shaft 255 is driven to rotate through rack and pinion transmission, so that the resistance caused by the pawl wheel 2543 is overcome. The tightness of the leg cuff assembly 250 can be adjusted by the adjusting knob cover 12541, so that the leg cuff assembly is convenient to use, and the tightness of the leg cuff assembly 1250 can be adjusted by directly controlling the first adjusting cuff 251 and the second adjusting cuff 252, so that the leg cuff assembly is convenient to use, and the leg cuff assembly is more comfortable to be attached to the leg of a user.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A limit adjustment linkage, comprising;

a housing;

a first bracket: is arranged on the shell;

limiting device: the device is arranged on the shell and positioned in the middle of the first bracket and the second bracket, and when the first bracket or the second bracket moves relative to the shell, the device is abutted against the first bracket and the second bracket to limit the maximum amplitude of the movement of the first bracket or the second bracket; the limiting device is a fixed structure with mutually opposite groove structures and detachable through a screw, or is a limiting structure with an elastic buffer structure and a limiting position adjusted through the screw; or the limiting device is a continuous limiting structure with large meshing teeth and small meshing teeth which are mutually coupled;

when the limiting device is of a fixing structure with mutually opposite groove structures and detachable through screws, the limiting device is detachably fixed on the shell through screws, and the limiting device with different radians and lengths is arranged between the first bracket and the second bracket so as to adjust the maximum amplitude of the relative movement of the first bracket and the second bracket; one end of the limiting device is contacted with the connecting rod, the other end of the limiting device is contacted with the first support, one end of the limiting device is provided with a first L-shaped groove structure so as to facilitate the movement of the connecting rod, the other end of the limiting device is provided with a second L-shaped groove structure opposite to the first groove structure, an arc-shaped groove is formed in one side edge of the limiting device, and the arc-shaped groove is matched with the edge of the first support so as to be convenient to be abutted against the first support.

2. The limit adjustment link device according to claim 1, wherein the anti-four link includes a first bracket shaft, a second bracket shaft, a link, a first link shaft and a second link shaft, the first bracket shaft and the second bracket shaft are respectively fixed on the housing and respectively inserted into through holes of the first bracket and the second bracket so that the first bracket and the second bracket rotate around the first bracket shaft or the second bracket shaft, the first link shaft and the second link shaft are respectively disposed at two ends of the link and respectively connect the first bracket and the second bracket, and a connecting line of the first bracket shaft and the second bracket shaft is disposed intersecting with an extending direction of the link so as to form an anti-four link structure.

3. The limit adjusting connecting rod device according to claim 1, wherein the limit device comprises an elastic buffer block, a sliding block and a top block, a groove for accommodating the elastic buffer block is formed in the shell, the sliding block is accommodated in the groove, one end of the top block is fixed on the shell through a screw, and the other end of the top block is inserted into the groove and is in contact with the sliding block.

4. The limit adjustment connecting rod device according to claim 3, wherein the top block is provided with a through hole for inserting the screw, the through hole is in a long strip shape, and the position of the sliding block in the groove is adjusted by the screw being located at different positions of the through hole, so that the limit position of the limit device is adjusted.

5. The limit adjustment linkage of claim 1, wherein the limit device is a continuous limit structure comprising:

toggle the key: a first boss and a second boss are arranged;

6. The limit adjustment connecting rod device according to claim 5, wherein a cavity is formed in the shell, the length of the cavity is the adjustment range of the toggle button, the large engagement teeth and the small engagement teeth are respectively arranged at the positions of the cavity, the toggle button penetrates through the cavity, a first boss on the toggle button is engaged with the large engagement teeth, and a second boss on the toggle button is engaged with the small engagement teeth.

7. The lower limb support is characterized by comprising the limit adjusting connecting rod device according to any one of claims 1-6 and a knee pad body, wherein two limit adjusting connecting rod devices are arranged and are respectively arranged on the left side edge and the right side edge of the knee pad body.

8. The brace of claim 7, wherein the brace body is further provided with a hinge device, the hinge device comprises a first bracket, a second bracket, a connecting shaft and an adjusting assembly, the first bracket is connected with the first bracket or the second bracket, the second bracket is connected with a leg bracket on the brace body, the first bracket and the second bracket are hinged and connected into a whole through the connecting shaft, the adjusting assembly is respectively arranged on the first bracket and the second bracket, and the adjusting assembly is adjusted to enable an included angle between the first bracket and the second bracket to move relatively so as to adjust an angle.

9. The lower limb brace of claim 8, wherein the adjustment assembly comprises a slider and a top pin, the slider is provided with a threaded structure adapted to the top pin, the slider is disposed in the second frame clamp, the first frame clamp is provided with an extension block, the extension block is provided with a first through hole for accommodating the top pin, the top pin is screwed with the threaded structure in the slider after passing through the first through hole, and an angle between the first frame clamp and the second frame clamp is adjusted by adjusting the penetration of the top pin into the threaded structure of the slider.

10. The lower limb brace of claim 7, wherein the knee pad body is further provided with a folding snap fastener for installing and detaching the binding band on the knee pad body, the folding snap fastener comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with a first hook, the second connecting piece is provided with a rotating piece, the rotating piece rotates on the second connecting piece by taking a first connecting rod as an axis, one end of the rotating piece is provided with a second connecting rod, when the second connecting rod is hung on the first hook, and the second connecting piece and the rotating piece rotate to be in a straight line, the first connecting piece and the second connecting piece are connected and locked; the first connecting piece is provided with a first magnet block, the second connecting piece is provided with a second magnet block, and when the first connecting piece is connected and locked with the second connecting piece, the first magnet block and the second magnet block are adsorbed together.

11. The brace of claim 10, wherein the folding button further comprises a locking button, the locking button comprises a movable member and a locking post, the movable member is disposed on the rotating member, the locking post is disposed on the first connecting member, and the movable member is slid or rotated to lock the movable member and the locking post.

12. The lower extremity brace of claim 7, wherein the knee brace body further comprises a leg cuff assembly for adjusting a width of a leg brace, the leg cuff assembly comprising: the device comprises a first adjusting hoop, a second adjusting hoop, a gear, an adjusting knob and a shaft; one end of the shaft is connected with the adjusting knob, the other end of the shaft is connected with the gear, rack structures are respectively arranged on the first adjusting hoop and the second adjusting hoop, the gear is clamped between the rack structures of the first adjusting hoop and the second adjusting hoop to slide left and right, the interval position between the first adjusting hoop and the second adjusting hoop is adjusted, and therefore the width between leg supports connected with the first adjusting hoop and the second adjusting hoop respectively is adjusted.

13. The lower limb brace of claim 12, wherein the adjustment knob comprises a knob cover, a ratchet wheel, a pawl wheel and a thumb wheel, the ratchet wheel is mounted on the mounting plate, and an inner edge of the ratchet wheel is of a ratchet structure; the ratchet wheel is arranged in the ratchet wheel and is matched with the ratchet structure, the ratchet wheel comprises a main body part and a cantilever pawl which is fixedly connected with the main body part and has elasticity, the main body part is rotationally connected with the shaft, the shifting wheel is fixedly connected with the shaft, the shifting wheel is matched with the ratchet wheel, the shifting wheel is rotated positively, the shifting wheel drives the cantilever pawl to be close to the main body part, the cantilever pawl is separated from the ratchet structure, the shifting wheel is rotated reversely, and the cantilever pawl is in sliding butt joint with the ratchet structure.