CN215584764U

CN215584764U - Elastic buffer type hand-free walking stick

Info

Publication number: CN215584764U
Application number: CN202022320228.2U
Authority: CN
Inventors: 纪律
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-01-21
Anticipated expiration: 2030-10-16

Abstract

The utility model relates to an elastic buffer type hand-free crutch, which comprises a thigh saddle, a thigh restraint strap, a supporting leg platform, a shank restraint strap, an upper supporting piece, a lower supporting piece and a foot piece, and is characterized in that: the upper supporting piece comprises an expansion link and an adjustable buffering support frame, the expansion link is adjustable in length and provided with a locking piece, the upper end of the expansion link is connected with a thigh saddle, and the lower end of the expansion link is connected with the adjustable buffering support frame; the adjustable buffer strut comprises a buffer shell, a buffer seat, a first elastic buffer rod, a second elastic buffer rod, a first sliding support, a second sliding support and a sliding support adjusting mechanism. The utility model has the advantages of ingenious structure and reasonable design, the upper supporting piece consists of the telescopic rod and the adjustable buffer supporting frame, the whole length of the upper supporting piece can be elastically changed along with the walking posture of a patient, the upper supporting piece can be reliably fixed on the leg of the patient, and the upper supporting piece has certain mobility and can make the patient feel comfortable and convenient when walking.

Description

Elastic buffer type hand-free walking stick

Technical Field

The utility model relates to a crutch, in particular to an elastic buffer type hands-free crutch, and belongs to the technical field of medical rehabilitation auxiliary appliances.

Background

The walking stick is a medical rehabilitation auxiliary tool suitable for being used by handicapped persons such as the old, the disabled and the like, but the walking stick commonly used at present needs to be supported by hands, for some users with injured legs and needing to use both hands, the existing walking stick needing to be supported by hands cannot meet the requirements, and some artificial limbs needing not to be supported by hands are also suitable for patients with incomplete legs, and for patients with injured legs but without incomplete legs, the artificial limbs cannot be used.

Patent application No. CN201280063131.3 discloses a hands-free crutch including a leg platform on which a strap can be used to hold the leg in a forward position and a ground contact, and a thigh saddle that can help prevent lateral movement of the user's thigh relative to the crutch. However, according to the feedback of the patient, the hand-free crutch has the following defects in practical use: 1. because the thigh restraint strap, the thigh saddle and the leg platform in the hand-free crutch are fixedly connected with the two upper supporting pieces, the thigh of a user needs to swing back and forth when walking, and the thigh needs to have certain mobility in the swinging process, but the two upper supporting pieces in the hand-free crutch are fixed after being adjusted, so that the thigh of the patient is inconvenient to swing when walking, and the thigh restraint strap of some patients can be properly loosened to facilitate the swinging of the thigh, but the thigh restraint strap and the thigh are repeatedly rubbed, so that the skin of the thigh of the patient is abraded, and the movement is more inconvenient; and the loosening of the thigh fixing part can influence the supporting stability of the whole hand-free crutch, so that the patient can walk unstably, and the risk of accidental falling can occur. 2. This hands-free walking stick lacks the reliable part that supplies the patient to support, though is provided with the handle at the thigh saddle, the position of handle is lower, and the patient mostly needs to bend over when using, and short time use is still not big, but if the patient bends over for a long time and supports the handle, then produces tired sense very easily.

Therefore, there is a need for an improved design of the existing hands-free crutch to overcome the above-mentioned problems during the use thereof.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the elastic buffer type hands-free crutch which is ingenious in structure, reasonable in design, safe and reliable, can be reliably fixed on the leg of a patient, has a certain mobility, and can enable the patient to feel comfortable and convenient when walking.

According to the technical scheme provided by the utility model: the elastic buffer type hand-free crutch comprises a thigh saddle, a thigh restraint band, a leg platform, a shank restraint band, an upper support piece, a lower support piece and a foot piece, wherein the lower end of the upper support piece is connected with the leg platform, the upper end of the upper support piece is connected with the thigh saddle, the thigh restraint band is installed on the thigh saddle, the shank restraint band is installed on the leg platform, the upper end of the lower support piece is connected with the bottom of the leg platform, and the foot piece is installed at the lower end of the lower support piece; the method is characterized in that: the upper supporting piece comprises an expansion link and an adjustable buffering support frame, the expansion link is adjustable in length and provided with a locking piece, the upper end of the expansion link is connected with a thigh saddle, and the lower end of the expansion link is connected with the adjustable buffering support frame; the adjustable buffer strut comprises a buffer shell, a buffer seat, a first elastic buffer rod, a second elastic buffer rod, a first sliding support, a second sliding support and a sliding support adjusting mechanism, wherein the buffer shell is fixedly installed at the bottom of the landing leg platform, a guide through hole for inserting the lower end of the telescopic rod is formed in the top of the buffer shell, the buffer seat is arranged in the buffer shell, the lower end of the telescopic rod is fixedly connected with the buffer seat after extending into the buffer shell, and the first elastic buffer rod and the second elastic buffer rod are arranged in the buffer shell and are symmetrically distributed inside and outside; the upper end of the first elastic buffer rod is hinged to a hinge joint close to the outer side of the buffer seat, the lower end of the first elastic buffer rod is hinged to a first sliding support, the first sliding support is slidably mounted on the inner bottom surface of the buffer shell and close to the outer side, and the outer side is the side close to the outer side of a thigh when the buffer shell is used; the upper end of the second elastic buffer rod is hinged to a hinge joint of the buffer seat close to the inner side, the lower end of the second elastic buffer rod is hinged to a second sliding support, the second sliding support is slidably mounted on the inner bottom surface of the buffer shell and close to the inner side, and the inner side is the side close to the inner side of a thigh when the buffer seat is used; the first sliding support and the second sliding support are respectively connected with a sliding support adjusting mechanism, and the sliding support adjusting mechanism can drive the first sliding support and the second sliding support to approach to each other or to be away from each other in opposite directions.

As a further improvement of the utility model, the sliding support adjusting mechanism comprises a positive and negative thread screw rod and a hand wheel, the positive and negative thread screw rod is rotatably arranged on the buffer shell, one end of the positive and negative thread screw rod faces inwards, the other end of the positive and negative thread screw rod faces outwards, the hand wheel is arranged at the outward end of the positive and negative thread screw rod, the first sliding support is arranged on the positive thread of the positive and negative thread screw rod in a threaded manner, and the second sliding support is arranged on the reverse thread of the positive and negative thread screw rod in a threaded manner.

As a further improvement of the utility model, the thigh saddle comprises a saddle, a side saddle and a fixing screw, wherein the saddle is arc-shaped, saddle through holes are respectively formed in the two ends of the saddle, saddle connecting blocks are respectively arranged on the back sides of the two ends of the saddle, and arc-shaped long holes are formed in the saddle connecting blocks; the side saddle comprises a leg attaching saddle plate and a saddle connecting block integrally arranged on the back of the leg attaching saddle plate, and a saddle through hole and a screw mounting hole are formed in the saddle connecting block; the two side saddles are symmetrically arranged at the inner end and the outer end of the saddle, and the saddle through hole is vertically aligned with the saddle through hole; the two telescopic rods are respectively an outer telescopic rod and an inner telescopic rod, the upper end of the inner telescopic rod is inserted into a saddle through hole of the side saddle on the inner side and a saddle through hole at the inner end of the saddle, and the upper end of the outer telescopic rod is inserted into a saddle through hole of the side saddle on the outer side and a saddle through hole at the outer end of the saddle; the arc-shaped long hole corresponds to the screw mounting hole, and the fixing screw penetrates through the arc-shaped long hole and is in threaded connection with the screw mounting hole; two ends of the thigh restraint strap are respectively connected to the leg attaching saddle plates of the two side saddles.

As a further improvement of the utility model, the lower side edge of the inner surface of the saddle is provided with a widened part extending downwards.

As a further improvement of the utility model, an auxiliary handle is arranged on the thigh saddle.

As a further improvement of the utility model, the auxiliary handle comprises a handle, a handle rod and a handle rod seat, the handle is arranged at the upper end of the handle rod, the lower end of the handle rod is connected to the upper part of one end of the handle rod seat, the other end of the handle rod seat is provided with a first handle fixing hole, the middle part of the handle rod seat is provided with a second handle fixing hole, the middle part of the saddle platform is provided with a first saddle platform fixing hole, the outer end of the saddle platform is provided with a second saddle platform fixing hole, a first fastening screw is arranged in the first handle fixing hole and the first saddle platform fixing hole, a second fastening screw is arranged in the second handle fixing hole and the second saddle platform fixing hole, and the handle rod seat is fixed on the saddle platform through the first fastening screw and the second fastening screw.

As a further improvement of the utility model, the lower support member comprises a telescopic main support rod and two side support rods, the upper end of the telescopic main support rod is connected with the front end of the landing leg platform, the lower end of the telescopic main support rod is provided with the foot member, two ends of the front side edge of the bottom surface of the buffer shell are provided with fixed cylinders, the upper ends of the side support rods are inserted into the fixed cylinders and fastened through screws, and the lower ends of the side support rods are fixedly connected with the telescopic main support rods through adjustable hoops.

As a further improvement of the utility model, the adjustable clamp comprises a clamp ring, a locking bolt and a locking nut, the clamp ring surrounds the lower end of an outer sleeve of the telescopic main support rod, and the lower end of the outer sleeve is provided with a contraction port; the locking bolt penetrates through the lug plates at the two ends of the clamping ring and is provided with the locking nut, and the locking bolt and the locking nut are provided with handles convenient for screwing.

As a further improvement of the utility model, a guide bush is arranged in the guide through hole.

Compared with the prior art, the utility model has the following advantages:

1) the utility model has the advantages of ingenious structure and reasonable design, the upper supporting piece consists of the telescopic rod and the adjustable buffer support frame, the whole length of the upper supporting piece can be elastically changed along with the walking posture of the patient, the upper supporting piece can be reliably fixed on the leg of the patient, and the upper supporting piece has certain mobility and can make the patient feel comfortable and convenient when walking.

2) The overall shape of the thigh saddle can be flexibly adjusted according to the leg circumference of a patient, so that the thigh saddle can be better attached to the front side, the left side and the right side of the thigh of the patient, and the restraint fixing effect is ensured.

3) The auxiliary handle which can be conveniently detached is arranged in the walking aid, so that the walking aid is convenient for a patient to hold when the patient walks, and is comfortable, labor-saving and safe.

Drawings

FIG. 1 is a front view of the structure of an embodiment of the present invention.

Fig. 2 is a structural side view of an embodiment of the present invention.

Fig. 3 is a schematic view of an internal structure of the adjustable buffer bracket shown in fig. 1.

Fig. 4 is a schematic perspective view of the upper half of the embodiment of the utility model.

Description of reference numerals: 1-thigh saddle, 1.1-saddle, 1.1 a-saddle connecting block, 1.1 b-arc long hole, 1.2-side saddle, 1.2 a-leg-attaching saddle plate, 1.2 b-saddle connecting block, 1.3-fixing screw, 2-thigh restraint belt, 3-supporting leg platform, 4-shank restraint belt, 5-upper support, 5.1-telescopic rod, 5.1.1-outer telescopic rod, 5.1.2-inner telescopic rod, 5.2-adjustable buffer support, 5.2.1-buffer shell, 5.2.2-buffer seat, 5.2.3-first elastic buffer rod, 5.2.4-second elastic buffer rod, 5.2.5-first sliding support, 5.2.6-second sliding support, 5.2.7-positive and negative screw thread, 5.2.8-hand wheel, 6-lower support, 6.1-main supporting rod, 6.2-telescopic side supporting rod, 7-foot piece, 8-auxiliary grip, 8.1-handle, 8.2-handle bar, 8.3-handle bar seat, 8.4-first fastening screw, 8.5-second fastening screw, 9-adjustable clamp, 9.1-clamp ring, 9.2-locking bolt and 9.3-locking nut.

Detailed Description

The utility model is further illustrated by the following specific figures and examples.

As shown in fig. 1 to 4, the embodiment discloses an elastic buffer type hands-free crutch, which comprises a thigh saddle 1, a thigh restraint strap 2, a leg platform 3, a shank restraint strap 4, an upper support member 5, a lower support member 6 and a foot member 7, wherein the lower end of the upper support member 5 is connected with the leg platform 3, the upper end of the upper support member 5 is connected with the thigh saddle 1, the thigh restraint strap 2 is installed on the thigh saddle 1, the shank restraint strap 4 is installed on the leg platform 3, the upper end of the lower support member 6 is connected with the bottom of the leg platform 3, and the lower end of the lower support member 6 is connected with the foot member 7; the upper supporting piece 5 comprises an expansion link 5.1 and an adjustable buffering support frame 5.2, the length of the expansion link 5.1 is adjustable and is provided with a locking piece, the upper end of the expansion link 5.1 is connected with a thigh saddle 1, and the lower end of the expansion link 5.1 is connected with the adjustable buffering support frame 5.2; the adjustable buffer strut 5.2 comprises a buffer shell 5.2.1, a buffer seat 5.2.2, a first elastic buffer rod 5.2.3, a second elastic buffer rod 5.2.4, a first sliding support 5.2.5, a second sliding support 5.2.6 and a sliding support adjusting mechanism, wherein the buffer shell 5.2.1 is fixedly arranged at the bottom of the landing leg platform 3, the top of the buffer shell 5.2.1 is provided with a guide through hole for inserting the lower end of the telescopic rod 5.1, the buffer seat 5.2.2 is arranged in the buffer shell 5.2.1, the lower end of the telescopic rod 5.1 is fixedly connected with the buffer seat 5.2.2 after extending into the buffer shell 5.2.1, and the first elastic buffer rod 5.2.3 and the second elastic buffer rod 5.2.4 are arranged in the buffer shell 5.2.1 and are symmetrically distributed inside and outside; the upper end of the first elastic buffer rod 5.2.3 is hinged to a hinge joint of the buffer seat 5.2.2 close to the outer side, the lower end of the first elastic buffer rod 5.2.3 is hinged to the first sliding support 5.2.5, the first sliding support 5.2.5 is slidably mounted on the inner bottom surface of the buffer shell 5.2.1 and close to the outer side, and the outer side is the side close to the outer side of a thigh when the buffer shell is used; the upper end of a second elastic buffer rod 5.2.4 is hinged to a hinge joint of the buffer seat 5.2.2 close to the inner side, the lower end of the second elastic buffer rod 5.2.4 is hinged to a second sliding support 5.2.6, the second sliding support 5.2.6 is slidably mounted on the inner bottom surface of the buffer shell 5.2.1 and close to the inner side, and the inner side is the side close to the inner side of a thigh when the buffer shell is used; the first sliding support 5.2.5 and the second sliding support 5.2.6 are respectively connected with a sliding support adjusting mechanism, and the sliding support adjusting mechanism can drive the first sliding support 5.2.5 and the second sliding support 5.2.6 to be close to or away from each other in opposite directions.

During the specific use, the affected limb of patient's one side that needs to support is crooked, and the shank is placed on landing leg platform 3 and is utilized the about band 4 restraint of shank to fix, adjusts telescopic link 5.1 in the upper support piece 5 according to patient's height, makes thigh saddle 1 be in the position that is suitable for fixed, and patient's thigh front side supports and leans on thigh saddle 1 and utilizes the about band 2 restraint of thigh to fix. Because the upper support piece 5 comprises telescopic link 5.1 and adjustable buffering support frame 5.2, telescopic link 5.1 is just fixed by locking of locking piece after length adjustment, length is unchangeable, and adjustable buffering support frame 5.2 is elastic, and when the patient was walked, the whole length of upper support piece 5 can be along with the gesture elasticity change that the patient walked, can not be taken by upper support piece 5 and move after the thigh restraint band 2 was tied up like this, avoid grinding the skin. And the elastic buffer force of the adjustable buffer support frame 5.2 in the upper support part 5 can be adjusted according to the requirements of the patient, if the buffering performance required by the patient is better, only the sliding support adjusting mechanism is needed to drive the first sliding support 5.2.5 and the second sliding support 5.2.6 to move inwards for a certain distance, and vice versa. In addition, a guide bush is preferably arranged in the guide through hole, so that the support piece can be prevented from being blocked in the using process.

As shown in fig. 3, in this embodiment, the shoe adjustment mechanism includes a positive and negative threaded lead screw 5.2.7 and a hand wheel 5.2.8, the positive and negative threaded lead screw 5.2.7 is rotatably installed on the buffer housing 5.2.1, one end of the positive and negative threaded lead screw 5.2.7 faces inward and the other end faces outward, the hand wheel 5.2.8 is installed at the outward end of the positive and negative threaded lead screw 5.2.7, the first shoe 5.2.5 is threadedly installed on the positive thread of the positive and negative threaded lead screw 5.2.7, and the second shoe 5.2.6 is threadedly installed on the negative thread of the positive and negative threaded lead screw 5.2.7. So set up, through forward and reverse rotation hand wheel 5.2.8, just can make first sliding support 5.2.5 and second sliding support 5.2.6 be close to in opposite directions or keep away from in opposite directions, and then adjust adjustable buffering strut 5.2's elasticity buffering dynamics.

As shown in fig. 4, in the present embodiment, the thigh saddle 1 includes a saddle 1.1, a side saddle 1.2 and a fixing screw 1.3, the saddle 1.1 is arc-shaped, saddle through holes are respectively opened at both ends of the saddle 1.1, saddle connecting blocks 1.1a are respectively arranged at the back sides of both ends of the saddle 1.1, and arc-shaped long holes 1.1b are opened in the saddle connecting blocks 1.1 a; the side saddle 1.2 comprises a leg attaching saddle plate 1.2a and a saddle connecting block 1.2b integrally arranged on the back of the leg attaching saddle plate 1.2a, and a saddle through hole and a screw mounting hole are formed in the saddle connecting block 1.2 b; the two side saddles 1.2 are symmetrically arranged at the inner end and the outer end of the saddle 1.1, and the saddle through holes are vertically aligned with the saddle through holes; the two telescopic rods 5.1 are respectively an outer telescopic rod 5.1.1 and an inner telescopic rod 5.1.2, the upper end of the inner telescopic rod 5.1.2 is inserted into a saddle through hole of the inner side saddle 1.2 and a saddle through hole at the inner end of the saddle 1.1, and the upper end of the outer telescopic rod 5.1.1 is inserted into a saddle through hole of the outer side saddle 1.2 and a saddle through hole at the outer end of the saddle 1.1; the arc-shaped long hole 1.1b corresponds to the screw mounting hole, and the fixing screw 1.3 penetrates through the arc-shaped long hole 1.1b and then is in threaded connection with the screw mounting hole; two ends of the thigh restraint strap 2 are respectively connected to the leg attaching saddle plates 1.2a of the two side saddles 1.2. So set up, thigh saddle 1's whole shape can be adjusted according to patient's leg circumstances is nimble, ensures that thigh saddle 1 can laminate the front side and the left and right sides of patient's thigh better, guarantees the fixed effect of restraint.

In the present embodiment, as shown in fig. 1, the lower side of the inner surface of the saddle 1.1 is provided with a widened portion extending downward. So set up, increased the area of contact of thigh saddle 1 with patient's thigh, improve the travelling comfort that the patient used.

As shown in fig. 1 and 2, in the present embodiment, the thigh saddle 1 is provided with an auxiliary grip 8, so that the patient can conveniently hold the thigh saddle while walking, and the thigh saddle is comfortable, labor-saving and safe.

As shown in fig. 1, 2 and 4, in this embodiment, the auxiliary handle 8 includes a handle 8.1, a handle 8.2 and a handle base 8.3, the handle 8.1 is mounted on the upper end of the handle 8.2, the lower end of the handle 8.2 is connected to the upper portion of one end of the handle base 8.3, the other end of the handle base 8.3 is provided with a first handle fixing hole, the middle of the handle base 8.3 is provided with a second handle fixing hole, the middle of the saddle 1.1 is provided with a first saddle fixing hole, the outer end of the saddle 1.1 is provided with a second saddle fixing hole, the first handle fixing hole and the first saddle fixing hole are internally provided with a first fastening screw 8.4, the second handle fixing hole and the second saddle fixing hole are internally provided with a second fastening screw 8.5, and the handle base 8.3 is fixed on the saddle 1.1 through the first fastening screw 8.4 and the second fastening screw 8.5. So set up, supplementary handle 8 can be installed according to patient's needs and go or dismantle, and the outside at thigh saddle 1 is installed to supplementary handle 8's position, is convenient for like this to support.

As shown in fig. 1, in this embodiment, the lower support member 6 includes a telescopic main support rod 6.1 and two side support rods 6.2, an upper end of the telescopic main support rod 6.1 is connected to a front end of the leg platform 3, the foot member 7 is mounted at a lower end of the telescopic main support rod 6.1, fixing cylinders are disposed at two ends of a front side of the bottom surface of the buffer housing 5.2.1, upper ends of the side support rods 6.2 are inserted into the fixing cylinders and fastened by screws, and lower ends of the side support rods 6.2 are fixedly connected to the telescopic main support rods 6.1 by adjustable clamps 9. So set up, the length of lower support piece 6 can be adjusted in a flexible way, and landing leg platform 3 supports through telescopic main stay bar 6.1 and two side stay bars 6.2, and the structure is also more firm reliable.

As shown in fig. 3, in this embodiment, the adjustable clamp 9 includes a clamp ring 9.1, a locking bolt 9.2 and a locking nut 9.3, the clamp ring 9.1 surrounds the lower end of the outer sleeve of the telescopic main support rod 6.1, and the lower end of the outer sleeve is provided with a contraction port; the locking bolt 9.2 penetrates through the lug plates at the two ends of the clamp ring 9.1 and is provided with a locking nut 9.3, and the locking bolt 9.2 and the locking nut 9.3 are both provided with handles convenient for screwing.

In the present invention, the lower leg restraint strap 4 and the thigh restraint strap 2 can be made of a conventional product with binding and fixing purposes in the prior art, and the foot piece 7 can also be made of a product with similar functions in the prior art, and they are not technical innovation points of the present application, so the structures of the above parts are not further detailed here.

The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Various modifications and alterations may occur to those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and alterations should be accorded the broadest interpretation so as to encompass all such modifications and alterations.

Claims

1. The elastic buffer type hand-free crutch comprises a thigh saddle (1), a thigh restraint strap (2), a leg platform (3), a shank restraint strap (4), an upper support piece (5), a lower support piece (6) and a foot piece (7), wherein the lower end of the upper support piece (5) is connected with the leg platform (3), the upper end of the upper support piece (5) is connected with the thigh saddle (1), the thigh restraint strap (2) is installed on the thigh saddle (1), the shank restraint strap (4) is installed on the leg platform (3), the upper end of the lower support piece (6) is connected to the bottom of the leg platform (3), and the foot piece (7) is installed at the lower end of the lower support piece (6); the method is characterized in that: the upper supporting piece (5) comprises a telescopic rod (5.1) and an adjustable buffering support frame (5.2), the length of the telescopic rod (5.1) is adjustable and is provided with a locking piece, the upper end of the telescopic rod (5.1) is connected with a thigh saddle (1), and the lower end of the telescopic rod (5.1) is connected with the adjustable buffering support frame (5.2); the adjustable buffer strut (5.2) comprises a buffer shell (5.2.1), a buffer seat (5.2.2), a first elastic buffer rod (5.2.3), a second elastic buffer rod (5.2.4), a first sliding support (5.2.5), a second sliding support (5.2.6) and a sliding support adjusting mechanism, wherein the buffer shell (5.2.1) is fixedly arranged at the bottom of the landing leg platform (3), a guide through hole for inserting the lower end of the telescopic rod (5.1) is formed in the top of the buffer shell (5.2.1), the buffer seat (5.2.2) is arranged in the buffer shell (5.2.1), the lower end of the telescopic rod (5.1) is fixedly connected with the buffer seat (5.2.2) after extending into the buffer shell (5.2.1), and the first elastic buffer rod (5.2.3) and the second elastic buffer rod (5.2.4) are arranged in the buffer shell (5.2.1) and are symmetrically distributed; the upper end of a first elastic buffer rod (5.2.3) is hinged to a hinge joint of the buffer seat (5.2.2) close to the outer side, the lower end of the first elastic buffer rod (5.2.3) is hinged to a first sliding support (5.2.5), the first sliding support (5.2.5) is slidably mounted on the inner bottom surface of the buffer shell (5.2.1) and close to the outer side, and the outer side is the side close to the outer side of a thigh when the buffer shell is used; the upper end of a second elastic buffer rod (5.2.4) is hinged to a hinge joint of the buffer seat (5.2.2) close to the inner side, the lower end of the second elastic buffer rod (5.2.4) is hinged to a second sliding support (5.2.6), the second sliding support (5.2.6) is slidably mounted on the inner bottom surface of the buffer shell (5.2.1) and close to the inner side, and the inner side is one side close to the inner side of a thigh when the elastic buffer rod is used; the first sliding support (5.2.5) and the second sliding support (5.2.6) are respectively connected with a sliding support adjusting mechanism, and the sliding support adjusting mechanism can drive the first sliding support (5.2.5) and the second sliding support (5.2.6) to be close to or away from each other in opposite directions.

2. The elastically cushioned hand-free crutch of claim 1, further comprising: sliding support adjustment mechanism includes positive and negative screw lead screw (5.2.7) and hand wheel (5.2.8), positive and negative screw lead screw (5.2.7) rotate to be installed on buffering casing (5.2.1), and the other end is outwards inwards in positive and negative screw lead screw (5.2.7) one end, the one end that positive and negative screw lead screw (5.2.7) outwards is installed in hand wheel (5.2.8), first sliding support (5.2.5) screw thread is installed on the positive screw thread of positive and negative screw lead screw (5.2.7), second sliding support (5.2.6) screw thread is installed on the reverse screw thread of positive and negative screw lead screw (5.2.7).

3. The elastically cushioned hand-free crutch of claim 1, further comprising: the thigh saddle (1) comprises a saddle (1.1), side saddles (1.2) and fixing screws (1.3), wherein the saddle (1.1) is arc-shaped, saddle through holes are respectively formed in two ends of the saddle (1.1), saddle connecting blocks (1.1a) are respectively arranged on the back sides of the two ends of the saddle (1.1), and arc-shaped long holes (1.1b) are formed in the saddle connecting blocks (1.1 a); the side saddle (1.2) comprises a leg attaching saddle plate (1.2a) and a saddle connecting block (1.2b) integrally arranged on the back of the leg attaching saddle plate (1.2a), and a saddle through hole and a screw mounting hole are formed in the saddle connecting block (1.2 b); the two side saddles (1.2) are symmetrically arranged at the inner end and the outer end of the saddle (1.1), and the saddle through holes are vertically aligned with the saddle through holes; the two telescopic rods (5.1) are respectively an outer telescopic rod (5.1.1) and an inner telescopic rod (5.1.2), the upper end of the inner telescopic rod (5.1.2) is inserted into a saddle through hole of an inner side saddle (1.2) and a saddle through hole at the inner end of a saddle (1.1), and the upper end of the outer telescopic rod (5.1.1) is inserted into a saddle through hole of an outer side saddle (1.2) and a saddle through hole at the outer end of the saddle (1.1); the arc-shaped long hole (1.1b) corresponds to the screw mounting hole, and the fixing screw (1.3) penetrates through the arc-shaped long hole (1.1b) and then is in threaded connection with the screw mounting hole; two ends of the thigh restraint strap (2) are respectively connected to leg attaching saddle plates (1.2a) of the two side saddles (1.2).

4. The elastically cushioned hand-free crutch of claim 3, wherein: the lower side edge of the inner surface of the saddle (1.1) extends downwards to form a widened part.

5. The elastically cushioned hand-free crutch of claim 3, further comprising: an auxiliary grip (8) is arranged on the thigh saddle (1).

6. The elastically cushioned hand-free crutch of claim 5, further comprising: the auxiliary handle (8) comprises a handle (8.1), a handle rod (8.2) and a handle rod seat (8.3), the handle (8.1) is installed at the upper end of the handle rod (8.2), the lower end of the handle rod (8.2) is connected to the upper portion of one end of the handle rod seat (8.3), a first handle fixing hole is formed in the other end of the handle rod seat (8.3), a second handle fixing hole is formed in the middle of the handle rod seat (8.3), a first saddle fixing hole is formed in the middle of the saddle (1.1), a second saddle fixing hole is formed in the outer end of the saddle (1.1), a first fastening screw (8.4) is installed in the first handle fixing hole and the first saddle fixing hole, a second fastening screw (8.5) is installed in the second handle fixing hole and the second saddle fixing hole, and the handle rod seat (8.3) is fixed to the saddle (1.1) through the first fastening screw (8.4) and the second fastening screw (8.5).

7. The elastically cushioned hand-free crutch of claim 1, further comprising: the lower supporting piece (6) comprises a telescopic main supporting rod (6.1) and two side supporting rods (6.2), the upper end of the telescopic main supporting rod (6.1) is connected with the front end of the supporting leg platform (3), the lower end of the telescopic main supporting rod (6.1) is installed on the foot piece (7), fixing cylinders are arranged at two ends of the front side edge of the bottom surface of the buffer shell (5.2.1), the upper ends of the side supporting rods (6.2) are inserted into the fixing cylinders and fastened through screws, and the lower ends of the side supporting rods (6.2) are fixedly connected with the telescopic main supporting rods (6.1) through adjustable hoops (9).

8. The elastically cushioned hand-free crutch of claim 7, wherein: the adjustable clamp (9) comprises a clamp ring (9.1), a locking bolt (9.2) and a locking nut (9.3), the clamp ring (9.1) surrounds the lower end of an outer sleeve of the telescopic main support rod (6.1), and a contraction opening is formed in the lower end of the outer sleeve; the locking bolt (9.2) penetrates through the lug plates at the two ends of the clamp ring (9.1) and is provided with the locking nut (9.3), and the locking bolt (9.2) and the locking nut (9.3) are provided with handles convenient for screwing.

9. The elastically cushioned hand-free crutch of claim 1, further comprising: and a guide bushing is arranged in the guide through hole.