CN112957205B - Leg support - Google Patents

Abstract

The invention relates to the field of medical orthopedics and discloses a novel leg support which comprises an upper supporting plate, wherein a lower supporting plate connected through a hinge is arranged at one end of the upper supporting plate, the upper supporting plate and the lower supporting plate can be respectively fixed to the lower sides of thighs and shanks, and a base is fixedly arranged at one end, close to the upper supporting plate, of the lower end face of the lower supporting plate. The leg support tightens legs of a wounded person by utilizing the hinged matching of the upper supporting plate and the lower supporting plate, effectively prevents the legs of the wounded person from shaking, supports the legs by utilizing the supporting rods which are kept in a vertical state with the ground, prevents muscle ache of the wounded person caused by the gravity of the legs, and relieves the fatigue of the legs of the wounded person.

Description

a leg brace

technical field

The invention relates to the technical field of medical orthopedics, in particular to a leg brace.

Background technique

When the ankle is sprained or the leg is injured, the casualty generally needs to lie on the bed and try to avoid the movement of the legs and ankles. When the casualty needs to get out of bed for physical reasons, the bending of the legs will cause the muscles to vibrate, causing the patient to be extremely uncomfortable. When sitting and resting, the legs are in a straight state for a long time, which is easy to cause muscle fatigue. The existing leg nursing device cannot relieve the pain of the patient, and can not protect the patient in a standing state well, which is easy to cause secondary problems. secondary injury occurs.

SUMMARY OF THE INVENTION

The leg brace provided by the invention has the advantages of leg support, solves the problem of weight bearing and stress on injured legs in a standing state, relieves muscle soreness caused by the self-gravity of the legs, and can assist the wounded to walk upright.

The present invention provides the following technical solutions: a leg support includes an upper support plate, one end of the upper support plate is provided with a lower support plate connected by a hinge, and the upper support plate and the lower support plate can be respectively fixed on the thigh and the lower support plate. On the lower side of the lower leg, a base is fixed on the lower end surface of the lower support plate close to one end of the upper support plate, a rack placement cavity is arranged inside the base, and a lower end of the upper support plate is A rack inside the rack placement cavity, a power transmission assembly is arranged in the base, a support rod is hingedly connected to the lower end surface of the lower support plate on the side away from the base, and the lower side of the support rod is connected to the ground. Supporting assemblies in contact with each other, a telescopic assembly is arranged inside the support rod, the telescopic assembly can push the support assembly to extend, and a retracting assembly is provided between the outer circular surface of the support rod and the end face of one side of the lower support plate, The retracting assembly can drive the supporting assembly to retract.

Selected, a gear storage cavity is communicated with the lower wall of the rack placement cavity on one side close to the rack, and a ratchet wheel cavity is arranged on one side of the gear storage cavity, and the ratchet wheel cavity is opposite to the gear storage cavity. One side is provided with a sheave cavity, and a pull rope assembly is arranged inside the pulley cavity, and the pull rope assembly can provide power for the folding assembly.

Selected, a side wall surface of the ratchet cavity is rotatably provided with a spline shaft that penetrates through the two side walls of the gear storage cavity and extends out of the end surface of the base, and one end of the spline shaft located outside the base is fixed. An unlocking plate is provided, the outer circular surface of the spline shaft located inside the gear storage cavity is splined with a spur gear, and the outer circular surface of the spur gear extends into the rack placement cavity, and the outer surface of the rack The end surface is provided with a tooth shape that cooperates with the outer circular surface of the spur gear, and the rack can drive the spur gear to rotate.

Selected, an outer ratchet wheel is fixed at one end of the spline shaft inside the ratchet wheel cavity, and a synchronous disc coaxial with the spline shaft is rotated on a side wall surface of the ratchet wheel cavity. A return spring is fixed between one end face and the end face of the outer ratchet, a side wall surface of the ratchet cavity rotates with a sheave shaft passing through the two side walls of the sheave cavity, and the pulley shaft located inside the sheave cavity A rope sheave is fixed on the outer surface of the sheave shaft, a pull rope is fixedly wound on the outer circular surface of the sheave, a side wall surface of the sheave cavity and the end face of the sheave are fixed with a sleeve on the outside of the sheave shaft The torsion spring can drive the sheave to reset.

Selected, an inner ratchet is fixed at one end of the sheave shaft located inside the ratchet cavity, a ratchet shaft is fixed at one end surface of the inner ratchet that is deviated from the center of the circle, and the outer circular surface of the ratchet shaft is provided with a ratchet shaft. A rotating pawl, the pawl can form a match with the tooth shape of the outer ratchet circumferential wall, and a baffle is fixed on one end face of the inner ratchet away from the pawl shaft, and the end face of the baffle is in contact with the outer ratchet shaft. A return spring is fixed between the outer circular surfaces of the pawls, and the baffle plate can limit the rotation angle of the pawls.

Selectively, the inner wall of the extension cavity is provided with a displacement block capable of sliding, the lower end surface of the displacement block is fixedly provided with an extension rod extending out of the support rod, and the ball pin at the lower end of the extension rod is connected with a gripping rubber, The grip rubber can enhance grip.

Selected, an electromagnet is fixed inside the displacement block, an armature is fixed inside the support rod on the upper side of the electromagnet, and the displacement block can attract each other with the armature when it is energized. A support spring is fixed between the upper end surface and the upper wall surface of the support rod.

Selected, the folding assembly includes a reset rod fixed on the lower end surface of the lower support plate, the reset rod is internally provided with a pull-back rod storage cavity, and the support rod end surface is fixedly provided with a pull-back rod storage cavity extending to the back-pull rod storage cavity. The inner pullback rod, one end of the pullback rod located inside the pullback rod storage cavity is fixed with a guide plate, and a pullback spring is fixed between one end face of the guide plate and the wall surface of the pullback rod storage cavity, so A touch switch is fixed between the end surface of the other side of the guide plate and the inner wall surface of the pull-back rod storage cavity. The touch switch can control the on-off of the electromagnet. The end face of the guide plate is fixedly connected.

Selectively, straps are fixed between the outer end surfaces of the upper support plate and the lower support plate, and the straps can bind the legs.

The present invention has the following beneficial effects:

1. The present invention tightens the legs of the wounded by using the hinged cooperation of the upper support plate and the lower support plate, effectively preventing the leg of the wounded from shaking, and supports the calf by using the support rod that is vertical to the ground to prevent the wounded from The self-gravity of the leg causes muscle soreness and relieves the fatigue of the injured leg.

2. The present invention utilizes an extensible extension rod to extend the support length, which is convenient for the wounded to stand and walk, and at the same time, it can support the legs of the wounded in the standing state, so as to reduce the injury to the legs of the wounded when walking.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the enlarged schematic diagram at A place in Fig. 1;

Fig. 3 is the schematic diagram at B-B place in Fig. 2;

Fig. 4 is the enlarged schematic diagram at C in Fig. 3;

Fig. 5 is the schematic diagram at D-D place in Fig. 4;

Fig. 6 is the enlarged schematic diagram at E in Fig. 1;

FIG. 7 is an enlarged schematic diagram of the position F in FIG. 6 .

In the figure: 11, upper support plate; 12, lower support plate; 13, straps; 14, base; 15, rack placement cavity; 16, rack; 17, gear storage cavity; 18, spline shaft; 19 , spur gear; 20, unlocking plate; 21, ratchet cavity; 22, sheave cavity; 23, synchronous disc; 24, outer ratchet; 25, return spring; 26, inner ratchet; 27, pawl shaft; 28, pawl ;29, Sheave shaft; 30, Sheave; 31, Pull rope; 32, Torsion spring; 33, Baffle plate; 34, Return spring; 35, Support rod; 36, Expansion cavity; 37, Displacement block; Lever; 39, grip rubber; 40, electromagnet; 41, support spring; 42, armature; 43, reset lever; 44, pullback rod storage cavity; 45, guide plate; 46, pullback rod; 47, touch switch; 48. Pull back spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, a leg support includes an upper support plate 11, one end of the upper support plate 11 is provided with a lower support plate 12 connected by a hinge, the upper support plate 11 and the lower support plate 12 can be connected They are respectively fixed on the lower side of the thigh and the lower leg. A base 14 is fixed on the lower end surface of the lower support plate 12 close to one end of the upper support plate 11 . The lower end of the plate 11 is fixedly provided with a rack 16 that can extend to the inside of the rack housing cavity 15 , the base 14 is provided with a power transmission component, and the lower end surface of the lower support plate 12 is away from the base 14 . A support rod 35 is hingedly connected with the support rod 35 , and a support assembly that is in contact with the ground is provided on the lower side of the support rod 35 , and a telescopic assembly is arranged inside the support rod 35 , and the telescopic assembly can push the support assembly to extend, and the support rod Between the outer circular surface of 35 and the end face on one side of the lower support plate 12, there is a retracting component, and the retracting component can drive the supporting component to retract.

A gear storage chamber 17 is communicated with the lower wall surface of the rack housing cavity 15 on the side close to the rack 16 , and a ratchet wheel cavity 21 is provided on one side of the gear storage cavity 17 , and the ratchet wheel cavity 21 is opposite to the The other side of the gear storage cavity 17 is provided with a sheave cavity 22, and a pull rope assembly is arranged inside the pulley cavity 22, and the pull rope assembly can provide power for the retracting assembly.

Wherein, a side wall surface of the ratchet cavity 21 is rotatably provided with a spline shaft 18 which penetrates through both side walls of the gear storage cavity 17 and extends out of the end surface of the base 14 , and the spline located on the outside of the base 14 An unlocking plate 20 is fixed at one end of the shaft 18 , and a spur gear 19 is splined on the outer surface of the spline shaft 18 inside the gear storage cavity 17 , and the outer surface of the spur gear 19 extends to the rack. In the placement cavity 15 , the outer end surface of the rack 16 is provided with a tooth shape that cooperates with the outer surface of the spur gear 19 , and the rack 16 can drive the spur gear 19 to rotate.

One end of the spline shaft 18 inside the ratchet cavity 21 is fixedly provided with an outer ratchet 24, and a side wall surface of the ratchet cavity 21 is rotatably provided with a synchronous disc 23 that is coaxial with the spline shaft 18, A return spring 25 is fixed between one end face of the synchronizing plate 23 and the end face of the outer ratchet 24 , and a side wall surface of the ratchet cavity 21 is rotatably provided with a pulley shaft 29 penetrating the two side walls of the pulley cavity 22 . The sheave 30 is fixed on the outer surface of the sheave shaft 29 inside the sheave cavity 22 , the pulley 31 is fixedly wound on the outer surface of the sheave 30 , and a side wall surface of the sheave cavity 22 is connected to the A torsion spring 32 sleeved on the outside of the sheave shaft 29 is fixed between the end faces of the sheave 30 , and the torsion spring 32 can drive the sheave 30 to reset.

An inner ratchet wheel 26 is fixed at one end of the rope wheel shaft 29 located inside the ratchet wheel cavity 21 , and a pawl shaft 27 is fixed at one end face of the inner ratchet wheel 26 which is deviated from the center of the circle. There is a rotatable pawl 28 on the surface, and the pawl 28 can form a match with the tooth shape of the peripheral wall of the outer ratchet wheel 24. The end face of the inner ratchet wheel 26 is fixedly provided with a stopper away from the pawl shaft 27. On the plate 33 , a return spring 34 is fixed between the end surface of the baffle plate 33 and the outer circular surface of the pawl 28 , and the baffle plate 33 can limit the rotation angle of the pawl 28 .

The inner wall surface of the extension cavity 36 is provided with a slidable displacement block 37 , the lower end surface of the displacement block 37 is fixedly provided with an extension rod 38 extending out of the support rod 35 , and the lower end of the extension rod 38 is connected with a ball pin. Grip rubber 39 capable of enhancing grip.

Wherein, an electromagnet 40 is fixed inside the displacement block 37 , an armature 42 is fixed inside the support rod 35 on the upper side of the electromagnet 40 , and the displacement block 37 can attract each other with the armature 42 when energized. A support spring 41 is fixed between the upper end surface of the displacement block 37 and the upper wall surface of the support rod 35 .

Wherein, the folding assembly includes a reset rod 43 fixed on the lower end surface of the lower support plate 12, the reset rod 43 is provided with a pull-back rod storage cavity 44 inside, and the support rod 35 has a fixed end surface extending to the return rod. The pull-back rod 46 inside the pull-rod storage cavity 44 is fixed with a guide plate 45 at one end of the pull-back rod 46 located inside the pull-back rod storage cavity 44 . A pullback spring 48 is fixed therebetween, and a touch switch 47 is fixed between the other end face of the guide plate 45 and the inner wall of the pullback rod storage cavity 44 , and the touch switch 47 can control the When the electromagnet 40 is turned on and off, the other end of the pull rope 31 is fixedly connected to the end surface of the guide plate 45 .

Wherein, a strap 13 is fixed between the upper support plate 11 and the outer end surface of the lower support plate 12 , and the strap 13 can bind the legs.

working principle:

Initially, the upper support plate 11 and the lower support plate 12 are in the same linear position, the pawl 28 and the outer ratchet 24 cooperate with each other, the return spring 25 and the torsion spring 32 are in a free state, the electromagnet 40 is in an electrified state, and the displacement block 37 and the extension The rod 38 is in the upper limit position, the support spring 41 is in a compressed state, the retraction spring 48 is in a free state, and the retraction rod 46 is in an extended state.

Attach the upper support plate 11 and the lower support plate 12 to the lower side of the injured person's thigh and lower leg respectively, and use the straps 13 to bind the upper support plate 11 and the lower support plate 12. The plate 11 and the lower support plate 12 are in the same straight line position. Since the pullback rod 46 is at the limit position, the support rod 35 is pushed to form a vertical state with the ground. At this time, the grip rubber 39 is in contact with the ground and lifts the lower support plate 12. In order to achieve the supporting effect, so as to avoid the aggravation of the disease and the occurrence of muscle soreness caused by the long suspension of the leg. When the wounded wants to stand, the force of the thigh and the calf are synchronously exerted, and then the lower support plate 12 is driven to rotate. At this time, the lower support plate 12 A certain angle is gradually formed with the upper support plate 11, and then the base 14 is driven to rotate toward the side close to the upper support plate 11. At this time, the rack 16 and the spur gear 19 move relative to each other, thereby driving the spur gear 19 and the spline. The shaft 18 rotates, which in turn drives the outer ratchet 24 to rotate. At this time, through the cooperation with the pawl 28, the power is transmitted to the inner ratchet 26, which in turn drives the pulley shaft 29 to rotate, which in turn drives the pulley 30 to rotate and pull the pulley. The rope 31 is wound. At this time, the torsion spring 32 performs a certain torsion and storage force. When the rope 31 is wound, it drives the guide plate 45 to move toward the side close to the lower support plate 12 and compresses the pullback spring 48. At this time, the guide plate 45 The support rod 35 is driven by the pullback rod 46 to rotate and move closer to the lower support plate 12. At this time, the guide plate 45 is disconnected from the touch switch 47 on the inner wall of the pullback rod storage cavity 44, thereby stopping the power supply of the electromagnet 40. The magnetic force of the iron 40 disappears, the displacement block 37 moves to the side away from the armature 42 under the elastic force of the support spring 41, and then pushes the extension rod 38 to continue to extend outward, thereby driving the extension of the grip rubber 39, and the grip rubber 39 extends beyond the sole of the foot When the injured person stands, the upper and lower support plates 11 and 12 are kept straight again by the upper and lower legs, which in turn drives the reverse rotation of the spur gear 19 and the spline shaft 18. It can not drive the sheave shaft 29 to rotate, and can keep the grip rubber 39 in contact with the ground, thereby supporting the legs. By using the support of the extension rod 38 and the grip rubber 39, the wounded can be assisted in walking. , when the injured person is in a sitting state again after the exercise is completed, pinch the unlocking plate 20 with one hand and pull it outward, thereby driving the spline shaft 18 and the outer ratchet 24 to move outward, and compressing the return spring 25. When the pawl 28 is disconnected from the outer ratchet 24, the restriction of the inner ratchet 26 is released, and the sheave 30 rotates in the reverse direction under the action of the torsional moment of the sheave shaft 29, thereby releasing the pull rope 31. When the sheave 30 stops rotating Release the control of the unlocking plate 20, the outer ratchet 24 is reset under the elastic force of the return spring 25 and the cooperation between the outer ratchet 24 and the pawl 28 is completed. Move away from the side of the lower support plate 12, push the support rod 35 to the The side away from the lower support plate 12 is rotated. At this time, the inner wall of the pull rod storage cavity 44 and the touch switch 47 on the end face of the guide plate 45 are in contact with each other, and then the electromagnet 40 is energized again to generate a magnetic force, which in turn attracts the armature 42 to drive the extension. The rod 38 and the gripping rubber 39 move upward and compress the support spring 41, thereby realizing the reset of the device.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement it, but not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall be included within the protection scope of the present invention.

Claims (2)

1. A leg support, includes last backup pad (11), its characterized in that: the upper supporting plate (11) is provided with a lower supporting plate (12) connected through a hinge, the upper supporting plate (11) and the lower supporting plate (12) can be fixed on the lower sides of thighs and shanks respectively, the lower end face of the lower supporting plate (12) is close to a base (14) fixed at one end of the upper supporting plate (11), a rack settling cavity (15) is arranged in the base (14), a rack (16) capable of extending into the rack settling cavity (15) is fixedly arranged at the lower end of the upper supporting plate (11), a power transmission assembly is arranged in the base (14), the lower end face of the lower supporting plate (12) far away from one side of the base (14) is connected through a hinge to a supporting rod (35), a supporting assembly in mutual contact with the ground is arranged on the lower side of the supporting rod (35), a telescopic assembly is arranged in the supporting rod (35), and can push the supporting assembly to extend, a furling assembly is arranged between the outer circular surface of the support rod (35) and one side end surface of the lower support plate (12), and the furling assembly can drive the support assembly to retract; a gear storage cavity (17) is communicated with the lower wall surface of one side, close to the rack (16), of the rack mounting cavity (15), a ratchet cavity (21) is arranged on one side of the gear storage cavity (17), a rope wheel cavity (22) is arranged on the other side, opposite to the gear storage cavity (17), of the ratchet cavity (21), a rope wheel component is arranged inside the rope wheel cavity (22), and the rope wheel component can provide power for the furling component; a spline shaft (18) which penetrates through two side wall surfaces of the gear storage cavity (17) and extends out of the end surface of the base (14) is rotatably arranged on one side wall surface of the ratchet cavity (21), an unlocking plate (20) is fixedly arranged at one end of the spline shaft (18) positioned on the outer side of the base (14), a straight gear (19) is in spline fit with the outer circular surface of the spline shaft (18) positioned in the gear storage cavity (17), a tooth form which is mutually matched with the outer circular surface of the straight gear (19) is arranged on the outer end surface of the rack (16), and the rack (16) can drive the straight gear (19) to rotate; an outer ratchet wheel (24) is fixedly arranged at one end of the spline shaft (18) positioned in the ratchet cavity (21), a synchronous disc (23) which is coaxial with the spline shaft (18) is rotatably arranged on one side wall surface of the ratchet cavity (21), a reset spring (25) is fixedly arranged between one side end surface of the synchronous disc (23) and the end surface of the outer ratchet wheel (24), a rope wheel shaft (29) penetrating through two side wall surfaces of the rope wheel cavity (22) is rotatably arranged on one side wall surface of the ratchet cavity (21), a rope wheel (30) is fixedly arranged on the outer circular surface of the rope wheel shaft (29) positioned in the rope wheel cavity (22), a pull rope (31) is fixedly wound on the outer circular surface of the rope wheel (30), and a torsion spring (32) sleeved outside the rope wheel shaft (29) is fixedly arranged between one side wall surface of the rope wheel cavity (22) and the end surface of the rope wheel (30); an inner ratchet wheel (26) is fixedly arranged at one end of the rope wheel shaft (29) positioned in the ratchet wheel cavity (21), a pawl shaft (27) is fixedly arranged at a position, deviating from the circle center, of one side end face of the inner ratchet wheel (26), a pawl (28) capable of rotating is arranged on the outer circular surface of the pawl shaft (27), the pawl (28) and the tooth form of the circumferential wall of the outer ratchet wheel (24) can form fit, a baffle plate (33) is fixedly arranged at a position, far away from the pawl shaft (27), of one side end face of the inner ratchet wheel (26), and a return spring (34) is fixedly arranged between the end face of the baffle plate (33) and the outer circular surface of the pawl (28); a displacement block (37) capable of sliding is arranged on the inner wall surface of the extension cavity (36), an extension rod (38) extending out of the support rod (35) is fixedly arranged on the lower end surface of the displacement block (37), a ground grabbing rubber (39) is connected to a ball pin at the lower end of the extension rod (38), and the ground grabbing rubber (39) can enhance the ground grabbing force; an electromagnet (40) is fixedly arranged in the displacement block (37), an armature (42) is fixedly arranged in the supporting rod (35) on the upper side of the electromagnet (40), the displacement block (37) is electrified to be capable of attracting the armature (42), and a supporting spring (41) is fixedly arranged between the upper end face of the displacement block (37) and the upper wall face of the supporting rod (35); the furling assembly comprises a reset rod (43) fixed on the lower end surface of the lower supporting plate (12), a pull-back rod storage cavity (44) is arranged in the reset rod (43), a pull-back rod (46) extending into the pull-back rod storage cavity (44) is fixedly arranged on the end surface of the support rod (35), a guide sliding plate (45) is fixedly arranged at one end of the pull-back rod (46) positioned in the pull-back rod storage cavity (44), a pull-back spring (48) is fixedly arranged between the end surface of one side of the guide sliding plate (45) and the wall surface of the pull-back rod storage cavity (44), touch switches (47) are fixedly arranged between the end surface of the other side of the guide sliding plate (45) and the inner wall surface of the pull-back rod storage cavity (44), the touch switch (47) can control the electromagnet (40) to be powered on or off, the other end of the pull rope (31) is fixedly connected with the end face of the guide sliding plate (45).

2. A leg rest as claimed in claim 1, wherein: go up backup pad (11) with all fixed bandage (13) of being equipped with between the outer terminal surface of lower support plate (12), bandage (13) can be bound the shank.

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