CN210492949U

CN210492949U - A fall-resistant assist walking crutch

Info

Publication number: CN210492949U
Application number: CN201921703372.5U
Authority: CN
Inventors: 王永泉; 陈婷; 乔英伟; 张桢桢; 吕乐
Original assignee: Hubei University of Automotive Technology
Current assignee: Hubei University of Automotive Technology
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-05-12
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a fall-proof assisting walking stick, which comprises a crutch handle, a crutch rod and a quadruped support. The crutch handle is telescopically connected to the upper end of the crutch rod, and the quadruped supports are arranged in two groups respectively connected to the crutch rod. The lower end of the crutch rod is provided with an auxiliary foot bracket that can be folded and turned up and down, the auxiliary foot bracket is provided with a universal roller, and the lower part of the crutch rod is provided with a retractable pulley. The utility model carries out structural innovation on the basis of the existing crutches. By rotating the crutch rod and using the principle of relative motion, one group of foot brackets is raised along the crutch rod, and the appropriate height is adjusted to make the two groups of foot brackets face each other, and the foot brackets are clamped on The stair handrail is locked with a butterfly nut, so that the old man can push the crutch bar to help the old man go upstairs, and only a simple operation can help the old man to move forward and assist the support. The utility model has the advantages of exquisite structure, simple operation, convenient installation and reliable work performance, and is suitable for the elderly to use.

Description

Anti-falling power-assisted walking stick

Technical Field

The utility model relates to a daily life articles for use field, concretely relates to helping hand that prevents falling falls helps capable walking stick.

Background

Most old people have the problems of heavy legs and feet, softness, weakness, stiff joints, inconvenient movement, incapability of standing for a long time and the like, and the weight borne by knees of people is increased by 3 to 4 times in the process of climbing stairs. If a person weighs about 100 jin, the weight of the knee can reach 400 jin when climbing stairs. With the age, the strength of the old is greatly reduced, the coordination ability of the body is also reduced, muscle groups are degenerated, so that the old is more difficult to climb stairs, and the old is easy to fall and hurt when going upstairs.

To the old person who lives in non-elevator room, climb stair are the inevitable action in daily life, to the old person who lives in the duplex floor, it is inevitable to go up stair, the old person takes place the accident of falling on stair also not few, have old person because the weak last grade stair of leg and foot step on the sky and cause serious fracture damage, and the injury of falling causes little harm to old person, especially causes hip fracture, even dies, so old person's the problem of going upstairs is waited to solve urgently.

Disclosure of Invention

The utility model aims at solving the problem of single function of the prior crutch, and providing a fall-preventing power-assisted walking stick with the functions of assisting going upstairs, walking and supporting.

Therefore, the technical scheme of the utility model is that: the utility model provides a helping hand that prevents falling helps capable walking stick, includes walking stick handle, walking stick pole and four-foot support, and the walking stick handle is connected in the upper end of walking stick pole, and four-foot leg joint is in the lower extreme of walking stick pole, its characterized in that:

the crutch handle is telescopically inserted into the upper end of the crutch rod,

a crutch rod positioned at the same side of the crutch handle is provided with a foldable auxiliary foot bracket which can be turned up and down, and the lower end of the outer side of the auxiliary foot bracket is provided with a universal roller;

four foot supports include the foot support of fixing base, four L type structures, and the centre of fixing base is equipped with the through hole, follows the outside extension of through hole on the fixing base and is equipped with the draw-in groove of taking the opening, be equipped with in the draw-in groove with the fixing base on the corresponding threaded hole's of through hole groove piece, two foot supports among four foot supports are fixed on the draw-in groove of fixing base, two other foot supports are fixed on the groove piece, and four foot supports are "ten" style of calligraphy and distribute, wherein: the two foot supports fixed on the clamping groove are of an integrated bending structure, and a vertically upward limiting pin is arranged above one side, close to the clamping groove, of the horizontal section; the two foot supports fixed on the groove block adopt a split structure, the horizontal section is connected with the vertical section through a rotating shaft, the vertical section can turn 180 degrees along the horizontal section and is vertically upward or downward, a vertically downward limiting pin is arranged below one side of the horizontal section close to the groove block, and the distance between the limiting pin and the bent part of the foot support is the same as the distance between the limiting pin of the foot support on the clamping groove and the bent part of the foot support;

a limiting block accommodating cavity extends downwards along the through hole on the bottom surface of the fixing seat, an annular clamping groove is formed in the inner wall of the limiting block accommodating cavity, and a movable limiting block is rotationally connected in the annular clamping groove;

crutch rod lower part outer peripheral face is helicitic texture, and the lower extreme of crutch rod passes butterfly nut, groove block, fixing base in proper order, is fixed in on the activity stopper, wherein: the crutch rod is rotationally connected with the annular clamping groove through a movable limiting block, the crutch rod is rotationally connected with the fixed seat, and the crutch rod is in threaded connection with the groove block and the butterfly nut;

a pulley capable of stretching up and down is further mounted below the limiting block accommodating cavity, and when the pulley is in an extending state and is in contact with the ground, the pulley is matched with a universal roller on the auxiliary foot support for use;

when the walking stick is used, the pulley capable of stretching up and down is set to be in a contraction state, the auxiliary foot support is upwards folded and fixed on the walking stick rod through the hanging structure, the groove block is positioned in the clamping groove and is screwed and fixed through the butterfly nut, the vertical sections of the two split type L-shaped foot supports are downwards arranged, and the four foot supports are all in contact with the ground;

when the stair railing is used upstairs, the butterfly nut is unscrewed, the groove block moves upwards by rotating the crutch rod, the vertical sections of the two split type foot supports on the groove block are turned upwards by 180 degrees, meanwhile, the groove block is rotated to the two foot supports on the groove block and the two foot supports on the clamping groove in mirror arrangement and are screwed down by the butterfly nut, the crutch rod is held by both hands when the stair railing is used, a cavity in the middle of the two foot supports forms an embedding cavity of the stair railing, the two foot supports form clamping parts from both sides of the stair railing, and two opposite groups of limiting pins arranged on the foot supports form a supporting limiting part on the upper end surface of the stair railing;

when the walking stick is pushed to walk, the groove block is located in a position where two foot supports on the groove block and two foot supports on the clamping groove are arranged in a mirror-direction mode when the walking stick is used upstairs, the pulley capable of stretching up and down is set to be in an extension state, the pulley is in contact with the ground, the auxiliary foot supports are turned downwards and are in a laying-down state, the walking stick is placed in an inclined mode, the pulleys on two sides of the pulley connecting rod and the universal idler wheels on the auxiliary foot supports are located at the same horizontal height, and the pulley and the universal idler wheels are in contact with the ground to form front wheels and rear wheels which.

Preferably, the specific installation structure of the telescopic insertion of the crutch handle at the upper end of the crutch rod is that the vertical section of the crutch handle is of a tubular structure, U-shaped spring pieces are arranged in the vertical section at intervals from top to bottom, the lengths of the spring pieces on two sides of the U-shaped spring pieces are different, a protrusion is arranged on the outer side of the short-edge spring piece corresponding to each spring piece, a row of through holes corresponding to the protrusions are formed in the crutch handle, the protrusions extend out of the through holes, a through hole corresponding to the protrusions is formed in the crutch rod above the through holes, an annular pressing piece capable of sliding up and down and pressing the protrusions into the through holes is arranged on the crutch rod below the through holes, and a limiting protrusion for preventing the annular.

Preferably, the auxiliary foot support comprises a supporting rod and a foldable pull rod, one end of the supporting rod is hinged to the crutch rod through a first hinged seat, the other end of the supporting rod is provided with a universal roller through a universal roller frame, one end of the pull rod is hinged to the crutch rod through a second hinged seat, the other end of the pull rod is hinged to the middle of the supporting rod, the foldable pull rod comprises two sections, one end of one section is hinged to one end of the other section to form a foldable structure, the first hinged seat and the second hinged seat are fixed to the crutch rod, and the second hinged seat is located above the first hinged seat.

Preferably, the specific installation structure of the 'pulley capable of extending up and down is installed below the limiting block accommodating cavity' comprises a spring pin installation seat installed at the bottom of the limiting block accommodating cavity, a spring pin installation cavity is formed in the spring pin installation seat, a baffle plate extends downwards along the periphery of the bottom surface of the spring pin installation cavity, open grooves distributed in a cross shape are formed in the upward extending direction of the lower edge of the baffle plate, the groove bottoms of two opposite open grooves are close to the fixed seat to form a high-position open groove, the groove bottoms of the other two opposite open grooves are far away from the fixed seat to form a low-position open groove, and the low-position open groove is formed in the vertical direction of the crutch handle;

a T-shaped spring pin is arranged in the spring pin mounting cavity, the spring pin comprises a pin rod and a boss arranged at the upper end of the pin rod, a spring is arranged on the periphery of the pin rod, the upper end of the spring is abutted against the bottom surface of the boss of the spring pin, the lower end of the spring is abutted against the bottom surface of the spring pin mounting cavity, the lower end of the pin rod penetrates out of the bottom surface of the spring pin mounting cavity and extends downwards, the lower end of the spring pin is vertically fixed at the middle position of a pulley connecting rod, and two ends of the pulley connecting rod are respectively provided with a pulley;

preferably, the pulleys at two ends of the pulley connecting rod are in a splayed structure.

Preferably, the back of the crutch handle is provided with an auxiliary handle which is inclined upwards.

Preferably, the bottom of the foot bracket with the L-shaped structure is provided with a non-slip mat.

Preferably, a plurality of universal balls at intervals are arranged on the horizontal sections of the four foot supports, and the central connecting lines of the universal balls and the limiting pins on the foot supports are located on the same straight line.

Has the advantages that: the utility model discloses a design is exquisite, and is rational in infrastructure, easy operation, simple to operate, and the working property is reliable, has realized simultaneously that supplementary upstairs, help multinomial functions such as capable, auxiliary stay make things convenient for the old man to use. The utility model discloses a carry out the structural innovation on the basis of current walking stick, utilize the relative motion principle to make one of them a set of foot support rise along the walking stick pole through rotating the walking stick pole, adjust suitable height and make two sets of foot supports relative, block foot support in stair railing, reuse butterfly nut locks, realizes that the old man promotes walking stick pole helping hand old man upstairs, only needs simple operation can realize that the help old man moves ahead and supplementary support. The utility model discloses a structure is exquisite, easy operation, simple to operate, and the working property is reliable, and suitable old man uses.

1. The telescopic structure between the crutch handle and the crutch rod can quickly pull up and extend the crutch rod, is not easy to be stressed and retracted, can be folded and shortened only by sliding up and down, and is convenient for the old to use;

2. the universal idler wheel supporting rod and the foldable pull rod combination which are connected to the crutch rod are put down, and the function of walking aid can be realized through the mutual matching of the universal idler wheel put down by the combination and the pulley at the bottom;

3. the telescopic pulley structure is characterized in that a pulley connecting rod is connected by a spring pin, and the high position and the low position are switched by stretching and rotating for 90 degrees by adopting a pure mechanical design, so that the structure is reliable, the damage is not easy to damage, and the maintenance is convenient; meanwhile, the pulleys at the two ends of the pulley connecting rod are arranged into a splayed structure, so that the walking stick can be prevented from being laterally turned in the walking assisting process;

4. the back of the crutch handle is provided with an auxiliary handle in an upward inclined manner, so that the crutch can be held by the old conveniently in different states;

5. the bottom of the foot bracket is provided with the non-slip mat, so that the friction between the crutch foot and the ground is increased, and the walking can be safely carried forward;

6. the horizontal section of the foot support is provided with a plurality of spaced universal balls, when the foot support is clamped on the stair handrail and pushed forwards, the universal balls can roll flexibly and are convenient to push upwards, and in the boosting process, the universal balls can be clamped on the stair handrail by changing the contact direction, so that the boosting function of going upstairs is realized; the limiting pin is arranged to form a supporting limiting part of the upper end face of the stair handrail and prevent the crutch from turning over in the boosting process.

Drawings

Fig. 1 is a structural view of the present invention when the walking assist device is used.

Fig. 2 is a structural diagram of the present invention in use.

Fig. 3 is a structural view of the present invention when used upstairs.

Fig. 4 is a first state diagram of the utility model in the process of adjusting to the use structure for going upstairs.

Fig. 5 is a state diagram ii of the utility model in the process of adjusting to the use structure for going upstairs.

Fig. 6 is a half sectional view of the auxiliary leg support of the present invention when the structure is used upstairs.

FIG. 7 is an enlarged view of the telescoping arrangement between the A-cane handle and the cane shaft of FIG. 6.

Fig. 8 is an enlarged perspective view of the B-assist foot support of fig. 6.

Fig. 9 is an enlarged view of C-in fig. 6, constituting a stair railing gripping structure.

Fig. 10 is a partial enlarged view of the annular preform of the present invention.

Fig. 11 is a front view of the utility model in a half-section when the walking aid is used.

Fig. 12 is a view from a-a in fig. 11.

Fig. 13 is an enlarged view of D in fig. 11.

Fig. 14 is a structural view of the auxiliary foot support of the present invention fixed to the crutch bar after being folded.

Fig. 15 is an enlarged view of E in fig. 14.

Shown in the figure: 1. a crutch handle; 2. a crutch bar; 3. a four-legged stand; 4. a U-shaped spring piece; 5. a protrusion; 6. a through hole; 7. a second through hole; 8. annular tabletting; 9. a limiting bulge; 10. a support bar; 11. a foldable pull rod; 12. a first hinge seat; 13. a universal roller; 14. a second hinge seat; 15. a fixed seat; 16. a foot support; 16-1, two leg brackets fixed on the clamping groove; 16-2, two foot supports fixed on the groove block; 17. a card slot; 18. a groove block; 19-1, a first limit pin; 19-2 and a second limit pin; 20. a spring pin mounting seat; 21. a movable limiting block; 22. an open slot; 22-1, a high open slot; 22-2, a low-level open slot; 23. a spring pin; 24. a spring; 25. a pulley connecting rod; 26. a pulley; 27. a butterfly nut; 28. an auxiliary handle; 29. a non-slip mat; 30. a ball transfer unit; 31. hooking; 32. and (5) hanging a lug.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, but the embodiment should not be construed as limiting the present invention.

The utility model discloses as shown in fig. 1 to fig. 15:

an anti-falling power-assisted walking stick comprises a stick handle 1, a stick rod 2 and four-foot supports 3, wherein the stick handle 1 is telescopically inserted into the upper end of the stick rod 2, and the four-foot supports 3 are divided into two groups which are respectively connected to the lower end of the stick rod 2; the concrete structure of "the scalable cartridge of walking stick handle is in the upper end of walking stick pole" does, the vertical section of walking stick handle 1 is tube-shape structure, from the top down interval is equipped with U type spring leaf 4 in the vertical section, the spring leaf length of U type spring leaf 5 both sides is different, the corresponding minor face spring leaf outside of every spring leaf is equipped with protrudingly 5, be equipped with one row of through-hole 6 that corresponds with the protrusion on the walking stick handle, protrudingly 5 stretches out from this through-hole, be equipped with one on walking stick pole 2 with this protrudingly corresponding through-hole two 7, be equipped with one on the walking stick pole of through-hole two tops and can slide from top to bottom, with protruding downthehole annular preforming 8 of impressing, be equipped with the spacing arch 9 that prevents annular preforming.

The crutch rod 2 positioned on the same side of the crutch handle 1 is provided with a foldable auxiliary foot support H which can be turned over up and down, the auxiliary foot support comprises a support rod 10 and a foldable pull rod 11, one end of the support rod 10 is hinged on the crutch rod through a first hinged seat 12, the other end of the support rod is provided with a universal roller 13 through a universal roller frame, one end of the foldable pull rod 11 is hinged on the crutch rod through a second hinged seat 14, the other end of the foldable pull rod is hinged at the middle part of the support rod, the foldable pull rod 11 comprises two sections, one end of one section and one end of the other section are mutually hinged to form a foldable structure, the first hinged seat 12 and the second hinged seat 14 are fixed on the crutch rod, and; an end part hook 31 is also fixed on the side edge of the supporting rod and is used for assisting the foot bracket to be folded and then fixed on the crutch rod, and a hanging lug 32 is arranged at the corresponding position on the crutch rod;

four foot supports 3 include fixing base 15, the foot support 16 of four L type structures, and the centre of fixing base is equipped with the through hole, and outwards extend along the through hole on the fixing base and be equipped with the draw-in groove 17 of taking the opening, be equipped with in the draw-in groove with the fixing base on the corresponding threaded hole's of through hole groove block 18, when the draw-in groove was arranged in to the groove block, the groove block was highly unanimous with the draw-in groove upper surface, wherein two foot supports are fixed on the draw-in groove 17 of fixing base in four foot supports, two other foot supports are fixed on groove block 18, and four foot supports are "ten" style of calligraphy: the two foot supports 16-1 fixed on the clamping groove are of an integrated bending structure, and a vertically upward limiting pin I19-1 is arranged above one side, close to the clamping groove, of the horizontal section; the two foot supports 16-2 fixed on the groove block adopt a split structure, the horizontal section is connected with the vertical section through a rotating shaft, the vertical section can turn over 180 degrees along the horizontal section and is vertically upward or downward, a vertically downward limiting pin II 19-2 is arranged below one side of the horizontal section close to the groove block, and the distance between the limiting pin and the bent part of the foot support is the same as the distance between the limiting pin of the foot support on the clamping groove and the bent part of the foot support;

the bottom surface of the fixed seat is connected with a spring pin mounting seat 20, a limiting block accommodating cavity is arranged between the bottom surface of the fixed seat and the upper end surface of the spring pin mounting seat, an annular clamping groove is formed in the inner wall of the limiting block accommodating cavity, and a movable limiting block 21 is rotationally connected in the annular clamping groove; a spring pin mounting cavity is arranged in the spring pin mounting seat, a baffle plate extends downwards along the periphery of the bottom surface of the spring pin mounting cavity, open grooves 22 distributed in a cross shape are formed in the upward extension of the lower edge of the baffle plate, the groove bottoms of two opposite open grooves are close to the fixed seat to form a high-position open groove 22-1, the groove bottoms of the other two opposite open grooves are far away from the fixed seat to form a low-position open groove 22-2, and the low-position open groove is formed in the vertical direction of the surface where the crutch handle is located;

a T-shaped spring pin 23 is arranged in the spring pin mounting cavity, the spring pin 23 comprises a pin rod and a boss arranged at the upper end of the pin rod, a spring 24 is arranged at the periphery of the pin rod, the upper end of the spring abuts against the bottom surface of the boss of the spring pin, the lower end of the spring abuts against the bottom surface of the spring pin mounting cavity, the lower end of the pin rod penetrates out of the bottom surface of the spring pin mounting cavity and extends downwards, the lower end of the spring pin is vertically fixed at the middle position of a pulley connecting rod 25, two ends of the pulley connecting rod are respectively provided with a pulley 26, and the pulleys at the two ends are arranged in an eight-shaped structure to prevent side overturning;

the outer peripheral face of the lower part of the crutch rod 2 is of a threaded structure, the lower end of the crutch rod sequentially penetrates through a butterfly nut 27, a groove block 18, a fixing seat 15 and is fixed on a movable limiting block 21, wherein: the crutch rod 2 is rotationally connected with the annular clamping groove through a movable limiting block 21, the crutch rod 2 is rotationally connected with the fixed seat 15, and the crutch rod 2 is in threaded connection with the groove block 18 and the butterfly nut 27;

the back of the crutch handle 1 is also provided with an auxiliary handle 28 which is inclined upwards, so that the crutch can be held by the old conveniently when being in different use states.

The bottom of the foot support with the L-shaped structure is also provided with the non-slip mat 29, so that the friction between the crutch foot and the ground is increased, and the walking can be safely carried forward.

The horizontal sections of the four foot supports are also provided with a plurality of spaced universal balls 30, the central connecting lines of the plurality of universal balls and the upper limit pins 19 of the foot supports are positioned on the same straight line, when the foot supports are clamped on the stair handrail and pushed forwards, the universal balls can roll flexibly and are convenient to push upwards, and in the boosting process, the universal balls can be clamped on the stair handrail by changing the contact direction, so that the boosting function of going upstairs is realized.

The utility model discloses a theory of operation:

when the walking crutch is used (auxiliary support), the pulley connecting rod is arranged in the high-position open slot, the pulley leaves the ground, the auxiliary foot support is upwards folded and fixed on the crutch rod, the slot block is arranged in the slot and is screwed and fixed through the butterfly nut, the vertical sections of the two split type L-shaped foot supports are downwards arranged, the four foot supports are all contacted with the ground, and the height of the crutch handle can be adjusted as required;

when the walking stick is used upstairs, the butterfly nut is firstly unscrewed, the groove block is enabled to move upwards through relative motion by rotating the walking stick rod, the vertical sections of the two split type foot supports on the groove block are turned upwards by 180 degrees, meanwhile, the groove block is rotated to the position, opposite to the two foot supports on the groove block, on the same side of the two foot supports on the clamping groove and screwed down through the butterfly nut, the walking stick rod is transversely held by two hands during use, a cavity in the middle of the two groups of foot supports forms an embedding cavity of the stair handrail, the two groups of foot supports form clamping parts from two sides of the stair handrail, and two groups of opposite limiting pins arranged on the foot supports form a supporting limiting part on the upper end surface of the stair handrail and can;

when the walking stick is pushed to walk (walk), the groove block is positioned in a state when the walking stick is used upstairs, two foot supports on the groove block and two foot supports on the clamping groove are positioned at positions arranged in a mirror direction, the pulley connecting rod rotates 90 degrees after being stretched downwards and is arranged in a low-position open slot, the pulleys on two sides of the pulley connecting rod are contacted with the ground, the auxiliary foot supports are positioned in a laid-down state, the walking stick is obliquely arranged, the pulley connecting rod and the auxiliary foot supports form a stable triangular structure, the pulleys on two sides of the pulley connecting rod and the universal rollers on the auxiliary foot supports are positioned at the same horizontal height, the pulleys and the universal rollers are contacted with the ground to form front and rear wheels pushed to walk, the function of walking aid can be realized by mutually matching the universal rollers and the pulleys at the bottom, and the length of the telescopic handle of the walking stick is.

Those skilled in the art will appreciate that the details of the present invention are not described in detail herein.

From the above description of the processing method, those skilled in the art should understand that the present invention is not limited to the above embodiments, and all modifications and substitutions adopting the known technology in the field on the basis of the present invention fall within the protection scope of the present invention, which should be defined by the claims.

Claims

1. a fall-resistant assisting walking stick, comprising a crutch handle, a crutch rod and a quadruped support, the crutch handle is connected to the upper end of the crutch rod, and the quadruped support is connected to the lower end of the crutch rod, it is characterized in that:

The crutch handle is telescopically inserted on the upper end of the crutch rod,

The crutch rod located on the same side of the crutch handle is provided with an auxiliary foot bracket that can be folded and turned up and down, and the outer lower end of the auxiliary foot bracket is provided with a universal roller;

The four-leg support includes a fixed seat and four L-shaped foot supports. The middle of the fixed seat is provided with a through hole. The fixed seat is provided with a card slot with an opening extending outward along the through hole. A slot block with threaded holes corresponding to the through hole on the fixing seat, two of the four foot brackets are fixed on the slot of the fixing seat, and the other two foot brackets are fixed on the slot block, and the four The foot brackets are distributed in a "cross" shape, wherein: the two foot brackets fixed on the card slot are integrally bent, and a vertical upward limit pin is arranged on the top of the horizontal section near the card slot; The two foot brackets on the slot block adopt a split structure. The horizontal section and the vertical section are connected by a rotating shaft. The vertical section can be turned 180° along the horizontal section, vertically upward or downward, and the horizontal section is close to the slot block. There is a vertically downward limit pin under one side of the bracket, and the distance between the limit pin and the bent part of the foot bracket is the same as the distance between the limit pin of the upper foot bracket on the card slot and the bent part of the foot bracket ;

A limit block accommodating cavity is extended downward along the through hole on the bottom surface of the fixed seat, an annular clamping groove is arranged on the inner wall of the limit block accommodating cavity, and a movable limit block is rotatably connected in the annular clamping groove;

The outer peripheral surface of the lower part of the crutch rod is a threaded structure, and the lower end of the crutch rod passes through the butterfly nut, the groove block, the fixed seat in turn, and is fixed on the movable limit block, wherein: the crutch rod passes between the movable limit block and the annular slot. For the rotational connection, the crutch rod and the fixed seat are rotationally connected, and the crutch rod and the groove block and the butterfly nut are threaded;

A pulley that can be stretched up and down is also installed below the limit block accommodating cavity. When the pulley is in an extended state and is in contact with the ground, the pulley is used in cooperation with the universal roller on the auxiliary foot bracket;

When walking, the retractable pulley is set to the retracted state, the auxiliary foot bracket is retracted upward and fixed on the crutch rod through the hooking structure, the groove block is located in the card groove and is tightened and fixed by the butterfly nut, and the two split L-shaped structures The vertical section of the foot bracket is set downward, and the four foot brackets are all in contact with the ground;

When going upstairs, loosen the butterfly nut, move the groove block upward by turning the crutch rod, turn the vertical sections of the two split foot brackets on the groove block upward by 180°, and turn the groove block to the groove block on the groove block. The two foot brackets and the two foot brackets on the card slot are arranged in a mirror direction and are tightened by a butterfly nut. When using, both hands hold the crutch rod horizontally. The cavity between the two sets of foot brackets constitutes the embedded cavity of the stair handrail. The clamping part is formed from both sides of the stair handrail, and the two sets of opposite limit pins arranged on the foot bracket constitute the support limit part of the upper end face of the stair handrail;

When pushing the crutches, the slot block is in the state when it is used upstairs, the two foot brackets on the slot block and the two foot brackets on the card slot are in the position of mirror arrangement, and the up and down retractable pulley is set to the extended state, The pulley is in contact with the ground, the auxiliary foot bracket is turned down and placed in a down state, and the crutches are placed at an incline, so that the pulleys on both sides of the pulley link and the universal rollers on the auxiliary foot bracket are at the same level. Ground contact, forming the front and rear wheels for pushing.

2. A fall-resistant walking aid crutch according to claim 1, characterized in that: the specific installation structure of the crutch handle being telescopically inserted on the upper end of the crutch rod is that the vertical section of the crutch handle is a cylinder U-shaped spring pieces are arranged at intervals from top to bottom in the vertical section. The lengths of the spring pieces on both sides of the U-shaped spring pieces are different. The outer sides of the short-side spring pieces corresponding to each spring piece are provided with protrusions. There is a row of through holes corresponding to the protrusions, the protrusions protrude from the through holes, the crutch rod is provided with a through hole corresponding to the protrusion, and the crutch rod above the through hole is provided with a hole that can slide up and down to press the protrusion into the hole. The inner ring-shaped pressing piece, and the crutch rod below the through hole is provided with a limiting protrusion to prevent the ring-shaped pressing piece from sliding off.

3. The anti-falling assisted walking cane according to claim 1, wherein the auxiliary foot support comprises a support rod and a foldable pull rod, and one end of the support rod is hinged on the crutch rod through a hinged seat, The other end is installed with a universal roller through the universal roller frame, one end of the pull rod is hinged on the crutch rod through the second hinge seat, and the other end is hinged at the middle part of the support rod. One end is hinged with each other to form a foldable structure, the first hinge seat and the second hinge seat are fixed on the crutch rod, and the second hinge seat is located above the first hinge seat.

4 . The fall-resistant walking aid crutch according to claim 1 , wherein the specific installation structure of a pulley that can be retracted up and down is installed below the limit block accommodating cavity as follows: 4 . The spring pin mounting seat at the bottom of the block accommodating cavity, the spring pin mounting seat has a spring pin mounting cavity. Cross-shaped distribution of open grooves, wherein the groove bottoms of two opposite open grooves are close to the fixed seat to form a high open groove, and the groove bottoms of the other two opposite open grooves are far from the fixed seat to form a low open groove. in the vertical direction of the crutch handle;

A "T"-shaped spring pin is installed in the spring pin installation cavity. The spring pin includes a pin rod and a boss arranged on the upper end of the pin rod. The outer circumference of the pin rod is provided with a spring, and the upper end of the spring abuts on the bottom surface of the spring pin boss. The lower end of the spring abuts on the bottom surface of the spring pin installation cavity, the lower end of the pin rod protrudes from the bottom surface of the spring pin installation cavity and extends downward, the lower end of the spring pin is vertically fixed to the middle position of a pulley link, the pulley link Both ends are provided with a pulley.

5 . The fall-resistant assisted walking cane according to claim 4 , wherein the pulleys at both ends of the pulley link are in an "eight"-shaped structure. 6 .

6 . The anti-falling assisted walking cane according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the back of the cane handle is inclined upward and is provided with an auxiliary handle.

7 . The fall-resistant walking aid crutch according to claim 6 , wherein the bottom of the foot support of the L-shaped structure is provided with a non-slip pad. 8 .

8 . The fall-resistant walking aid crutch according to claim 7 , wherein the horizontal sections of the four foot brackets are provided with a plurality of spaced universal balls, and the plurality of universal balls are connected with the The center connection lines of the positioning pins on the foot bracket are on the same straight line.