Walking assisting device

Abstract

The utility model discloses a walking assisting device, and relates to the technical field of rehabilitation equipment. The device comprises two groups of supporting legs, handrails are arranged at the tops of the supporting legs in a one-to-one correspondence mode, wheel bodies are installed at the bottoms of the supporting legs, a lifting mechanism is arranged between the supporting legs and the handrails, and the lifting mechanism can adjust the height of the handrails on the supporting legs. The cushion is arranged between the two sets of supporting legs through the two rail grooves and the supporting rods. According to the utility model, the height of the armrest part held by a user above the supporting legs is adjusted through the lifting mechanism, so that users with different heights can comfortably hold the armrest part; the seat cushion is arranged on the rail groove, so that a flat arch user can rest when tired during walking, the seat cushion can be folded to be flush with the side faces of the supporting leg parts as much as possible, the situation that a large space for the user to walk forwards is occupied is avoided, and normal walking use of the user is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rehabilitation equipment, especially to a walking auxiliary device. BACKGROUND

[0002] Some old and weak people or postoperative patients are difficult to walk, and often need to use a walking auxiliary device to help them walk.

[0003] Reference announcement number "CN201721900351.3" discloses a walking auxiliary device, which is characterized in that: the height of the car body can be adjusted to adapt to users of different heights, and the angle of the handrail can be adjusted to improve the comfort of the user when walking.

[0004] During the implementation of the patent, the applicant found that the patent has the following technical problems:

[0005] Users of different heights may have difficulty using the device if the height adjustment function is missing. In addition, although the walking auxiliary device with a seat cushion can allow the user to rest when walking is tiring, the seat cushion is difficult to fold significantly, which may occupy a large space for the user to walk forward, affecting the normal use of the user, and the user may not be able to use the force when getting up and sitting down, and may not be able to observe the situation behind when walking. Therefore, a walking auxiliary device is needed to solve the technical problems mentioned in the above patent and provide a new technical solution. UTILITY MODEL CONTENT

[0006] Therefore, a walking auxiliary device is provided to solve the technical problems mentioned in the background art, such as the lack of height adjustment function, which may cause some users of different heights to have difficulty using the device, and the seat cushion may occupy a certain space for the user to walk forward after being folded.

[0007] The utility model adopts the following technical solutions:

[0008] A walking auxiliary device specifically includes:

[0009] Two groups of support legs, each having two hollow sections perpendicular to each other, with a wheel body at the bottom for movement:

[0010] Two groups of handrails are inserted into the hollow parts of the two groups of supporting legs;

[0011] A lifting mechanism is arranged between the two groups of supporting legs and the two groups of handrails and is configured to drive the handrails to adjust the positions of the handrails in the hollow parts of the supporting legs;

[0012] Two track grooves are connected by the supporting rods and are located between the two groups of supporting legs; and

[0013] A seat cushion is slidably arranged between the two track grooves through two short shafts arranged on two sides, and when the seat cushion is perpendicular to the track grooves through the short shafts, a folding form is formed, and when the seat cushion is parallel to the track grooves through the short shafts, a seatable form is formed.

[0014] As a preferred embodiment of the walking aid provided by the utility model, the two handrails are both inverted U-shaped, and the side facing the front is obliquely cut and curved to form a hand holding part, an identification anti-skid sleeve is sleeved on the hand holding part, and the lifting mechanism is arranged between the other sides of the two handrails away from the front.

[0015] As a preferred embodiment of the walking aid provided by the utility model, the hollow part is circular or square, the part where the handrail is inserted into the hollow part is adapted to the inner diameter of the hollow part, a positioning rod is fixed between the two hollow parts of the supporting legs, and the lifting mechanism is drivingly connected to the positioning rod.

[0016] As a preferred embodiment of the walking aid provided by the utility model, the lifting mechanism comprises two housings, a rotating shaft, two direction changing transmission members, two light rods, two screw rods and at least one hand wheel, the two housings are respectively fixed on the two handrails, the rotating shaft is transversely and rotatably connected between the two housings, both ends of the rotating shaft are partially extended into the housings, the two light rods are respectively and perpendicularly rotatably connected to the housings, one end of each of the two light rods is also partially extended into the housing, the two screw rods are integrally connected to the other end of the light rods, the two direction changing transmission members are fixed between one end of the rotating shaft in the housing and one end of the light rod, and the at least one hand wheel is fixed outside the rotating shaft.

[0017] As a preferred embodiment of the walking aid provided by the utility model, the two direction changing transmission members are bevel gear sets or ninety-degree universal joints.

[0018] The screw rod is screwedly connected into a threaded hole formed in the middle of the positioning rod, and a sleeve is fixed around the light rod and the screw rod on the positioning rod.

[0019] As a preferred embodiment of the walking auxiliary device provided by the utility model, two track grooves each include a first sliding groove section, a second sliding groove section and a third sliding groove section, the second sliding groove section is fixed and communicated between the first sliding groove section and the third sliding groove section.

[0020] The first sliding groove section and the third sliding groove section are consistent in length, the cushion length is less than the first sliding groove section, and the short shaft is fixed on one side close to a corner of the cushion.

[0021] As a preferred embodiment of the walking auxiliary device provided by the utility model, the wheel body includes a directional wheel and a belt wheel brake type universal wheel, the directional wheel is fixed on one end of the two groups of support legs away from the front, and the universal wheel is fixed on one end of the two groups of support legs of the front.

[0022] As a preferred embodiment of the walking auxiliary device provided by the utility model, each track groove outside is provided with a standing frame, the standing frame includes a connecting seat connected with the third sliding groove section (43), an axle seat is rotatably connected on the connecting seat, a fixed rod is arranged on the upper portion of the axle seat in the radial direction, a vertical rod is arranged on the end of the fixed rod away from the axle seat, a sleeve rod is arranged below the fixed rod, one end of the sleeve rod is connected with the vertical rod, and the other end movably inserts a sliding rod, a spring is arranged between the sliding rod and the sleeve rod, a ball is embedded on the end of the sliding rod towards the connecting seat, the ball abuts against the side of the connecting seat and is rollingly connected with the connecting seat, a hand grip is arranged on the upper portion of the vertical rod, and a viewing mirror is arranged on the top of the vertical rod.

[0023] As a preferred embodiment of the walking auxiliary device provided by the utility model, one end of the connecting seat is connected with the third sliding groove section, and the other end is in a parabolic shape, the convex part faces the sliding rod, fixed grooves are symmetrically arranged on the front and rear sidewalls of the connecting seat close to one end of the third sliding groove section, and the ball can be movably embedded in the fixed groove.

[0024] As a preferred embodiment of the walking auxiliary device provided by the utility model, a circular groove is formed on the end of the vertical rod towards the connecting seat, one end of the sliding rod is inserted into the circular groove and can move along the axis of the circular groove, a spring is arranged in the circular groove, one end of the spring is connected with the end of the sliding rod inserted into the circular groove, and the other end is connected with the inner wall of the circular groove.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The walking auxiliary device provided by the utility model adjusts the height of the handrail part gripped by the user above the support leg through the lifting mechanism, so that users with different heights can comfortably hold the handrail part.

[0027] The walking auxiliary device provided by the utility model can be used for resting when a user is tired, and can be folded to be flush with the side surface of the supporting leg part, so that the space for the user to walk forward is not occupied, and the normal walking of the user is not affected.

[0028] The walking auxiliary device provided by the utility model can be used for resting when a user is tired, and can be folded to be flush with the side surface of the supporting leg part, so that the space for the user to walk forward is not occupied, and the normal walking of the user is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for the ordinary skilled in the art.

[0030] Figure 1 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0031] Figure 2 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0032] Figure 3 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0033] Figure 4 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0034] Figure 5 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0035] Figure 6 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0036] Figure 7 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0037] Figure 8 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.

[0038] Figure 9 The structure schematic view of the walking auxiliary device provided by the utility model in a walking use state is shown in the figure.Figure 8 Cross-sectional view of the middle b.

[0039] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0040] 1, support leg; 11, hollow part; 2, handrail; 21, hand holding part; 3, lifting mechanism; 31, outer shell; 32, rotating shaft; 33, direction changing transmission member; 34, polished rod; 35, screw rod; 4, track groove; 41, first sliding groove section; 42, second sliding groove section; 43, third sliding groove section; 5, support rod; 6, cushion; 7, short shaft; 8, positioning rod; 9, sleeve; 10, connecting seat; 101, shaft seat; 102, fixed rod; 103, vertical rod; 104, hand grip part; 105, sleeve rod; 106, sliding rod; 107, observation mirror; 108, fixing groove; 109, spring; 110, ball. DETAILED DESCRIPTION

[0041] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0042] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0043] As shown in Figure 1 and Figure 2 A walking aid device, which comprises: two groups of support legs 1, the top of the support leg 1 is provided with a handrail 2 one by one, and the bottom is provided with a wheel body, specifically, the wheel body comprises a directional wheel and a wheel brake type universal wheel, the directional wheel is fixed on the end foot of the two groups of support legs 1 away from the front, and the universal wheel is fixed on the end foot of the two groups of support legs 1 on the front, the directional wheel and the wheel brake type universal wheel are driven to rotate by holding the handrail 2 to move the device;

[0044] Further, both handrails 2 are inverted U-shaped, and the side facing the front is obliquely cut and curved to form a hand holding part 21 that can be held, a logo anti-skid sleeve is sleeved on the hand holding part 21, a lifting mechanism 3 is arranged between the other sides of the two handrails 2 away from the front, the user holds the hand holding part 21, and the other areas of the two handrails 2 except the hand holding part 21 form a space for accommodating the lifting mechanism 3, so that the layout of the hand holding part 21 and the lifting mechanism 3 does not interfere with each other.

[0045] In order to make the device usable by users of different heights, a lifting mechanism 3 is provided between the support leg 1 and the handrail 2. The lifting mechanism 3 can adjust the height of the handrail 2 on the support leg 1, thereby changing the overall height of the device.

[0046] In addition, to allow users to rest when they are tired from walking, the device is also equipped with a cushion 6. Specifically, the cushion 6 is located between the two sets of support legs 1 via two track grooves 4 and support rods 5. Figure 1 As shown, the seat cushion 6 can be folded up perpendicular to the track groove 4. At this time, the folded seat cushion 6 is at an angle that is as flush as possible with the side of the support leg 1, so as to avoid occupying too much space for the user to walk forward, thereby avoiding affecting the user's normal walking and use.

[0047] like Figure 2 As shown, when the seat cushion 6 is parallel to the track groove 4, it forms a seatable position, allowing the user to rest when tired from walking.

[0048] like Figures 1-3 As shown, the support leg 1 has two hollow portions 11 that are vertically segmented, so that the support leg 1 can be connected to the handrail 2 through the hollow portions 11. Specifically, the handrail 2 is inserted into the hollow portion 11 of the support leg 1 to be integrated with the support leg 1.

[0049] In some embodiments, the hollow portion 11 is circular or square, and the armrest 2 can be inserted into the portion of the hollow portion 11 that is adapted to the inner diameter of the hollow portion 11 so that the armrest 2 can move vertically on the support leg 1.

[0050] Furthermore, a positioning rod 8 is fixed between the two hollow parts 11 of the support leg 1. The lifting mechanism 3 is connected to the positioning rod 8. The lifting mechanism 3 drives the positioning rod 8 to increase or decrease the length of the handrail 2 overlapping inside the hollow part 11 of the support leg 1, so that the height of the two sets of handrails 2 on the two sets of support legs 1 changes.

[0051] like Figure 4 As shown and combined with Figures 1-3 ( Figure 3 To further understand its structure, only half of the structure of the lifting mechanism 3 is shown, but the overall structure can be understood without doubt from the following description. The lifting mechanism 3 includes two housings 31, a rotating shaft 32, two reversing transmission components 33, two guide rods 34, two screws 35 and at least one handwheel 36.

[0052] Two outer shells 31 are fixed on two armrests 2 respectively, a rotating shaft 32 is transversely connected between the two outer shells 31, and both ends of the rotating shaft 32 extend into the outer shells 31 partially, two light poles 34 are vertically connected on the outer shells 31 respectively, and one end of each light pole 34 also extends into the outer shell 31 partially, two screw rods 35 are integrally connected on the other end of the light poles 34, and are screwed into the screw holes in the middle of the positioning rod 8, two direction-changing transmission members 33 are fixed between one end of the rotating shaft 32 and one end of the light poles 34 in the outer shells 31, and at least one hand wheel 36 (including but not limited to) is fixed on the rotating shaft 32 (two are shown in the drawings) Figure 1 and Figure 2 .

[0053] In some embodiments, the direction-changing transmission member 33 is a bevel gear set or a ninety-degree universal joint (a bevel gear set is shown in the drawings), including but not limited to other mechanisms that can only achieve a ninety-degree direction-changing torque transmission.

[0054] In use, the rotating shaft 32 is driven to rotate by the hand wheel 36, and then the rotating shaft 32 simultaneously transmits torque to the light poles 34 and the screw rods 35 through the two end-connected direction-changing transmission members 33, so that the light poles 34 and the screw rods 35 rotate. Since the screw rods 35 are screwed into the screw holes in the middle of the positioning rod 8, the screw rods 35 will rotate while moving up and down on the positioning rod 8, thereby adjusting the height of the armrest 2 on the support leg 1.

[0055] In some embodiments, a sleeve 9 is fixed around the light poles 34 and the screw rods 35 on the positioning rod 8, which plays a role in shielding but not limiting the movement of the light poles 34 and the screw rods 35, and also plays a role in observing the length of the light poles 34 protruding outside the sleeve 9 to know the most intuitive adjustment length.

[0056] As shown in Figure 5 and in combination with Figure 1 and Figure 2 , the two track grooves 4 are connected by the support rod 5 and located between the two groups of support legs 1, and the seat cushion 6 is slidably arranged between the two track grooves 4 through the two short shafts 7 provided on both sides. Specifically, the short shaft 7 is fixed on one side close to the corner of the seat cushion 6, and the seat cushion 6 slides between the two track grooves 4 through the short shaft 7, so that it can be switched between the folded state and the seatable state.

[0057] As shown in Figure 6 , the two track grooves 4 each include a first sliding groove section 41, a second sliding groove section 42, and a third sliding groove section 43, and the second sliding groove section 42 is fixed and connected between the first sliding groove section 41 and the third sliding groove section 43;

[0058] The first slide section 41 and the third slide section 43 have the same length. The seat cushion 6 is shorter than the first slide section 41. The seat cushion 6 can switch between the folded form and the seatable form by sliding the short shaft 7 between the first slide section 41, the second slide section 42 and the third slide section 43.

[0059] like Figure 7 As shown and combined with Figure 1 and Figure 2 When the seat cushion 6 and its short axis 7 are perpendicular to the first slide section 41 and the second slide section 42, they are in a folded form; when the seat cushion 6 and its short axis 7 are parallel to the second slide section 42 and overlap the support rod 5, they form a form that can be sat on.

[0060] When it is necessary to switch from the riding mode to the folded mode, (with) Figure 7 (Taking a perspective as an example), the left side of the seat cushion 6 and its short axis 7 move upward within the first slide section 41. At the same time, the right side of the seat cushion 6 and its short axis 7 move from right to left within the third slide section 43 to compensate for the movement on the other side. This continues until the left side of the seat cushion 6 and its short axis 7 move to the top of the first slide section 41, and the right side of the seat cushion 6 and its short axis 7 move to the bottom of the first slide section 41. Finally, the right side of the seat cushion 6 and its short axis 7 move downward within the second slide section 42, moving away from the top of the first slide section 41, thus switching to the folded state. Moreover, the fact that the seat cushion 6 is located within the second slide section 42 can prevent the seat cushion 6 from being easily shaken by walking during normal use and switch to the reclining position.

[0061] When it is necessary to switch from the folded form to the sitting form, the above steps can be repeated in reverse. (It should be noted that the angle between the first slide section 41, the second slide section 42 and the third slide section 43, and the size of the short axis 7 within the slide section are shown in the figure for illustration only. In reality, any angle and size that allows the seat cushion 6 to smoothly switch between the folded form and the sitting form is acceptable.)

[0062] like Figure 8 and Figure 9As shown, each track groove 4 is provided with a sitting frame outside, which comprises a connecting seat 10 connected with the third sliding groove segment 43, an axle seat 101 pivotally connected on the connecting seat 10, a fixed rod 102 radially arranged on the upper portion of the axle seat 101, a vertical rod 103 arranged on the end of the fixed rod 102 away from the axle seat 101, a sleeve rod 105 arranged below the fixed rod 102, the sleeve rod 105 connected with the vertical rod 103 at one end and movably inserted with a sliding rod 106 at the other end, a spring 109 arranged between the sliding rod 106 and the sleeve rod 105, a ball 110 embedded on the end of the sliding rod 106 towards the connecting seat 10, the ball 110 abutting against the side of the connecting seat 10 and rolling connected with the connecting seat 10, a hand grip 104 arranged on the upper portion of the vertical rod 103, and a viewing mirror 107 arranged on the top of the vertical rod 103.

[0063] Further, the connecting seat 10 is connected with the third sliding groove segment 43 at one end and is in a parabolic shape at the other end, the convex part of which is towards the sliding rod 106, the front and rear sidewalls of the connecting seat 10 are symmetrically provided with a fixed groove 108 near the end connected with the third sliding groove segment 43, and the ball 110 is movably embedded in the fixed groove 108.

[0064] Further, the end of the vertical rod 103 towards the connecting seat 10 is provided with a circular groove, the end of the sliding rod 106 is inserted into the circular groove and is movable along the axis of the circular groove, the circular groove is provided with a spring 109, one end of the spring 109 is connected with the end of the sliding rod 106 inserted into the circular groove, and the other end of the spring 109 is connected with the inner wall of the circular groove.

[0065] When the old person needs to sit on the cushion 6 to rest, the sitting frames outside the two track grooves 4 are pressed towards each other, the balls 110 are moved to the fixed grooves 108, the sliding rods 106 are moved to the vertical rods 103, the vertical rods 103 are moved to the connecting seats 10, and the connecting seats 10 are moved to the third sliding groove segment 43. Figure 8The opening is shown, that is, pull the vertical rod 103 along the arc to the outside, at this time the ball 110 is disengaged from the fixed groove 108 on the back of the connecting seat 10 (that is, the side of the connecting seat 10 close to the first sliding groove section 41), the ball 110 is in contact with the side of the connecting seat 10 and rolls along the side of the connecting seat 10, because the end of the connecting seat 10 towards the sliding rod 106 is a parabolic convex, so in the first 90 degrees of the circular motion of the fixed rod 102 with the shaft seat 101 as the center, the sliding rod 106 moves towards the circular groove, the spring 109 is compressed, when the rotation angle of the fixed rod 102 exceeds 90 degrees, because the linear distance between the ball 110 and the shaft seat 101 starts to shorten at this time, the spring 109 restores deformation, the sliding rod 106 slides out along the axis of the circular groove, until the fixed rod 102 rotates 180 degrees, at this time the ball 110 is engaged with the fixed groove 108 on the front of the connecting seat 10 to complete the locking, the old people only need to hold the two handrails 104 on the two vertical rods 103 to sit stably on the cushion 6, when getting up, also hold the two handrails 104 to get up, then reverse the above operation to fold the standing and sitting frame. In order to ensure the stability of the whole device, the length of the vertical rod 103 can be extended, and universal wheels can be arranged at the bottom of the vertical rod 103, when the two standing and sitting frames are in the folded state, the universal wheels under the two vertical rods 103 can be used as auxiliary wheels to prevent side turning, when the two standing and sitting frames are in the open state, the universal wheels under the two vertical rods 103 can also extend the moment of the whole device, enhance the stability, when the two standing and sitting frames are in the folded state, the mirror surface of the observation mirror faces the front, when the two standing and sitting frames are in the open state, the mirror surface of the observation mirror faces the back, which is convenient for the user to observe the back.

Claims

1. A walking assistance device, characterized in that, include: Two sets of support legs (1), each having two hollow sections (11) that are vertically segmented, with wheels at the bottom for movement: Two sets of handrails (2) are inserted into the hollow parts (11) of the two sets of support legs (1); The lifting mechanism (3) is located between the two sets of support legs (1) and the two sets of handrails (2), and is configured to: drive and adjust the position of the handrails (2) in the hollow part (11) of the support legs (1); Two track slots (4) are connected by a support rod (5) and located between two sets of support legs (1); as well as The seat cushion (6) is slidably disposed between two track grooves (4) via two short shafts (7) on both sides. When the seat cushion (6) is perpendicular to the track groove (4) via the short shafts (7), it forms a folded shape. When the seat cushion (6) is parallel to the track groove (4) via the short shafts (7), it forms a seatable shape.

2. The walking assistance device according to claim 1, characterized in that, Both of the armrests (2) are inverted U-shaped and are obliquely bent on the side facing the front to form a grip (21). The grip (21) is covered with a marking anti-slip sleeve. The lifting mechanism (3) is located between the two armrests (2) on the other side away from the front.

3. The walking assistance device according to claim 2, characterized in that, The hollow part (11) is round or square. The handrail (2) can be inserted into the hollow part (11) and is adapted to the inner diameter of the hollow part (11). A positioning rod (8) is fixed between the two hollow parts (11) of the support leg (1). The lifting mechanism (3) is connected to the positioning rod (8) in a transmission.

4. The walking assistance device according to claim 3, characterized in that, The lifting mechanism (3) includes two housings (31), a rotating shaft (32), two reversing transmission components (33), two guide rods (34), two screws (35), and at least one handwheel (36). The two housings (31) are respectively fixed on the two handrails (2). The rotating shaft (32) is laterally rotatably connected between the two housings (31). Both ends of the rotating shaft (32) extend into the housings (31). The two guide rods (34) are vertically rotatably connected to the housings (31). One end of the two guide rods (34) also extends into the housings (31). The two screws (35) are integrally connected to the other end of the guide rods (34). The two reversing transmission components (33) are fixed between one end of the rotating shaft (32) and one end of the guide rod (34) located inside the housings (31). At least one handwheel (36) is fixed outside the rotating shaft (32).

5. The walking assistance device according to claim 4, characterized in that, The two reversing transmission components (33) are either bevel gear sets or 90-degree universal joints; The screw (35) is threaded into the screw hole in the middle of the positioning rod (8), and a sleeve (9) is fixed around the smooth rod (34) and the screw (35) on the positioning rod (8).

6. The walking assistance device according to claim 5, characterized in that, Both of the track grooves (4) include a first slide section (41), a second slide section (42) and a third slide section (43), wherein the second slide section (42) is fixed and connected between the first slide section (41) and the third slide section (43); The first slide section (41) and the third slide section (43) have the same length. The length of the seat cushion (6) is less than that of the first slide section (41). The short shaft (7) is fixed on one side near the corner of the seat cushion (6).

7. The walking assistance device according to claim 1 or 6, characterized in that, The wheel body includes a fixed wheel and a universal wheel with a wheel brake. The fixed wheel is fixed on one end of the two sets of support legs (1) away from the front, and the universal wheel is fixed on one end of the two sets of support legs (1) on the front.

8. The walking assistance device according to claim 6, characterized in that, Each of the track grooves (4) is provided with a support frame on its outer side. The support frame includes a connecting seat (10) connected to the third slide section (43). A bearing seat (101) is rotatably connected to the connecting seat (10) on a fixed axis. A fixing rod (102) is provided radially on the upper part of the bearing seat (101). A vertical rod (103) is provided at the end of the fixing rod (102) away from the bearing seat (101). A sleeve rod (105) is provided below the fixing rod (102). One end of the sleeve rod (105) is connected to the vertical rod. (103) is connected to the other end and a slide rod (106) is movably inserted at the other end. A spring (109) is provided between the slide rod (106) and the sleeve rod (105). A ball (110) is embedded in one end of the slide rod (106) facing the connecting seat (10). The ball (110) abuts against the side of the connecting seat (10) and is tumbled to the connecting seat (10). A gripper (104) is provided on the upper part of the upright (103). An observation mirror (107) is provided on the top of the upright (103).

9. The walking assistance device according to claim 8, characterized in that, One end of the connecting seat (10) is connected to the third slide section (43), and the other end is parabolic with the protruding part facing the slide rod (106). The front and rear side walls of the connecting seat (10) are symmetrically provided with fixing grooves (108) near the end of the third slide section (43), and the ball (110) can be movably embedded in the fixing groove (108).

10. The walking assistance device according to claim 8, characterized in that, The upright (103) has a circular groove at one end facing the connecting seat (10). One end of the sliding rod (106) is inserted into the circular groove and can move along the axis of the circular groove. A spring (109) is provided in the circular groove. One end of the spring (109) is connected to the end of the sliding rod (106) inserted into the circular groove, and the other end is connected to the inner wall of the circular groove.

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