Two-in-one walking aid capable of walking in parallel and enabling four feet to land simultaneously

Abstract

The utility model provides a two-in-one walking aid capable of walking in parallel and landing four feet simultaneously, which comprises a left side frame, a right side frame, a first middle connecting beam and a second middle connecting beam, the left side frame and the right side frame are both provided with a connecting piece assembly, and the connecting piece assembly is provided with a first limiting groove and a second limiting groove; two ends of the first connecting rod are rotationally matched with the left frame and the right frame respectively; the two ends of the second middle connecting beam are rotationally matched with the two connecting piece assemblies correspondingly. According to the two-in-one walking aid capable of walking in parallel and landing four feet simultaneously, a walking state and a fixed state can be switched, a quadrangular structure is formed by the first middle connecting beam, the second middle connecting beam, the left side frame and the right side frame in the walking state, the left side frame and the right side frame are kept parallel, and the four feet land simultaneously; and the rotating part of the second middle connecting beam is perpendicular to the second middle connecting beam to form an H-shaped structure, so that the situation that four feet are uneven when the walking aid walks can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a walking aid technical field, concretely relates to a two-in-one walking aid that can walk in parallel and four legs land at the same time. BACKGROUND

[0002] With the society gradually moving towards population aging, the proportion of the elderly population is increasing significantly, and the demand for walking aids is gradually increasing. The walking aid is an auxiliary tool for assisting the walking of the disabled, which has four legs to support the ground stably. It can be divided into fixed walking aid, reciprocal walking aid (reciprocal walker) and wheeled walking aid (wheeled walker).

[0003] The current walking aid usually includes left and right frames, each of which has two supporting legs. The user's hands are held on the left and right frames. When walking, the left and right frames walk alternately. The current left and right frames are not parallel to the ground when walking, which can easily cause the left and right frames to be unbalanced and fall down. SUMMARY

[0004] The utility model aims at overcoming the defects and deficiencies in the prior art, and provides a two-in-one walking aid that can walk in parallel and four legs land at the same time.

[0005] One embodiment of the utility model provides a two-in-one walking aid that can walk in parallel and four legs land at the same time, which comprises:

[0006] The left and right frames are provided with a connecting piece assembly, the bottom of the left frame and the bottom of the right frame are provided with two supporting legs, and the connecting piece assembly is provided with a first limiting groove and a second limiting groove;

[0007] The first intermediate connecting beam is rotatably connected to the left and right frames at both ends of the first connecting rod;

[0008] The second intermediate connecting beam is rotatably connected to the two connecting piece assemblies at both ends of the second intermediate connecting beam, the second intermediate connecting beam is provided with two sliding pieces, and the sliding pieces are detachably and slidably connected to the first limiting groove or the second limiting groove of the same connecting piece assembly;

[0009] When the sliding member is in sliding cooperation with the first limiting slot, the left side frame and the right side frame can be sequentially rotated to a first walking position, a fixed position and a second walking position in a direction away from the second intermediate connecting beam, and when the left side frame and the right side frame move alternately in a parallel manner, the two supporting feet of the left side frame and the two supporting feet of the right side frame land at the same time.

[0010] When the sliding member is in sliding cooperation with the second limiting slot, the two second limiting slots correspond to limit the left side frame and the right side frame to be in the fixed position.

[0011] In some optional embodiments, the first intermediate connecting beam comprises two connecting rods, one end of the two connecting rods correspondingly rotates with the left side frame and the right side frame, and the other end of the two connecting rods are detachably connected with each other.

[0012] When the other end of the two connecting rods are disconnected with each other, and when the sliding member is in sliding cooperation with the first limiting slot or the second limiting slot, the left side frame and the right side frame can be sequentially rotated to a folding position, the first walking position and the fixed position in a direction away from the second intermediate connecting beam.

[0013] In some optional embodiments, one of the connecting rods is provided with an inner hole, and the other connecting rod is slidably arranged in the inner hole, and when the left side frame and the right side frame are rotated to the folding position, the other connecting rod slides to a storage position along the inner hole.

[0014] In some optional embodiments, the connecting member assembly comprises a first connecting member and a second connecting member, the first limiting slot and the second limiting slot are arranged on the first connecting member, and the end of the second intermediate connecting beam is mounted between the first connecting member and the second connecting member of the same connecting member assembly and rotates with the first connecting member and the second connecting member, respectively.

[0015] In some optional embodiments, the two ends of the second intermediate connecting beam are respectively provided with a first rotating part and a second rotating part, the sliding member is arranged on the first rotating part, and the first rotating part and the second rotating part of the same end of the second intermediate connecting beam correspond to rotate with the first connecting member and the second connecting member of the same connecting member assembly.

[0016] In some alternative embodiments, the first connecting piece and the second connecting piece are both provided with guide holes, the guide hole of the first connecting piece is in communication with the first limiting slot and the second limiting slot, the first limiting slot and the second limiting slot are arranged in sequence along the guiding direction of the guide hole, and the end of the second intermediate connecting beam is rotationally matched with the guide hole of the first connecting piece and the guide hole of the second connecting piece of the same connecting piece assembly, and when the sliding piece is separated from the first limiting slot or the second limiting slot, the end of the second intermediate connecting beam can slide along the guide hole.

[0017] In some alternative embodiments, the sliding piece is a positioning ball, the positioning ball is movably extended into the first limiting slot or the second limiting slot from the guide hole, and is in sliding cooperation with the first limiting slot or the second limiting slot.

[0018] In some alternative embodiments, the first limiting slot and the second limiting slot are provided with flared portions on the side away from the guide hole, and the flared portions gradually expand in the direction away from the guide hole.

[0019] In some alternative embodiments, one side of the first connecting piece and one side of the second connecting piece are both provided with connecting seats, and the first connecting piece and the second connecting piece are connected with the left side frame or the right side frame through the connecting seats.

[0020] In some alternative embodiments, the support leg is formed with a lower eversion portion, the lower eversion portion of the support leg of the left side frame gradually extends to the left side in the downward direction, and the lower eversion portion of the support leg of the right side frame gradually extends to the right side in the downward direction.

[0021] Compared with the prior art, the two-in-one walking aid which can walk in parallel and land on four legs simultaneously of the utility model can switch between the walking state and the fixed state, in the walking state, the quadrilateral structure is formed by the first intermediate connecting beam, the second intermediate connecting beam, the left side frame and the right side frame, so that the left side frame and the right side frame remain parallel and land on four support legs simultaneously when walking alternately, and the stability of force is improved, and in the fixed state, the left side frame and the right side frame will not rotate relative to the first intermediate connecting beam and the second intermediate connecting beam, so that the user can be stably supported to stand; in addition, folding can be realized for packaging, carrying and storage, the overall structure is simple, and the design is ingenious.

[0022] In order to more clearly understand the utility model, the specific embodiments of the utility model will be described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of the two-in-one walking aid which can walk in parallel and land on four legs simultaneously of an embodiment of the utility model.

[0024] Figure 2 The exploded view of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to one embodiment of the present application;

[0025] Figure 3 The exploded view of the connecting piece assembly and the second intermediate connecting beam according to one embodiment of the present application;

[0026] Figure 4 The structural schematic view of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to one embodiment of the present application, in which the left frame is rotated to the first walking position and the right frame is rotated to the second walking position;

[0027] Figure 5 The structural schematic view of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to one embodiment of the present application, in which the left frame is rotated to the second walking position and the right frame is rotated to the first walking position;

[0028] Figure 6 The structural schematic view of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to one embodiment of the present application, in which the left frame and the right frame are rotated to the fixed position;

[0029] Figure 7 The structural schematic view of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to one embodiment of the present application, in which the left frame and the right frame are rotated to the folding position;

[0030] Figure 8 The structural schematic view of one side of the two-in-one walking aid capable of parallel walking and four legs landing at the same time according to another embodiment of the present application.

[0031] Explanation of reference signs:

[0032] 10, left frame; 11, connecting piece assembly; 12, first limiting groove; 13, second limiting groove; 14, first connecting piece; 15, second connecting piece; 16, guide hole; 17, flared portion; 18, connecting seat; 20, right frame; 30, first intermediate connecting beam; 31, connecting rod; 32, connecting sleeve; 33, inner hole; 40, second intermediate connecting beam; 41, sliding piece; 42, first rotating portion; 43, second rotating portion; 50, supporting leg; 51, lower everted portion. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Please refer to Figures 1 to 3The utility model discloses an embodiment provides a kind of two-in-one walking aid that can parallel walk and four legs are landed simultaneously, comprising: left frame 10, right frame 20, first intermediate connecting beam 30 and second intermediate connecting beam 40;

[0034] Left frame 10 and right frame 20 are all provided with connecting piece assembly 11, and first limiting slot 12 and second limiting slot 13 are provided on connecting piece assembly 11, and the bottom of left frame 10 and right frame 20 is provided with two supporting legs 50;

[0035] The two ends of first connecting rod 31 are rotatably connected with left frame 10 and right frame 20 respectively;

[0036] The two ends of second intermediate connecting beam 40 are rotatably connected with two connecting piece assemblies 11 respectively, and two sliding pieces 41 are provided on second intermediate connecting beam 40, and the sliding pieces 41 are detachably slidably connected with first limiting slot 12 or second limiting slot 13 on the same connecting piece assembly 11.

[0037] Please refer to Figures 4 to 5When the sliding piece 41 is in sliding cooperation with the first limiting groove 12, the left side frame 10 and the right side frame 20 can be sequentially rotated to the first walking position, the fixed position and the second walking position in the direction away from the second intermediate connecting beam 40, and at this time, the two-in-one walking aid capable of parallel walking and four feet landing at the same time is in the walking state, the left side frame 10 and the right side frame 20 can alternate forward movement, and the principle that the left side frame 10 and the right side frame 20 alternate forward movement is based on the principle of parallelogram linkage structure, the left side frame 10, the right side frame 20, the first intermediate connecting beam 30 and the second intermediate connecting beam 40 surround to form a parallelogram structure, the left side frame 10 and the right side frame 20 are parallel to each other, and the first intermediate connecting beam 30 and the second intermediate connecting beam 40 are parallel to each other. When the left side frame 10 and the right side frame 20 alternate forward movement in a parallel manner, the two supporting feet 50 of the left side frame 10 and the two supporting feet 50 of the right side frame 20 land at the same time, so that the two-in-one walking aid capable of parallel walking and four feet landing at the same time is stably supported, and the situation of shaking and toppling is avoided. Before alternating forward movement, the left side frame 10 and the right side frame 20 are both in the fixed position, and it is assumed that the left side frame 10 moves forward first, the left side frame 10 will be rotated to the first walking position relative to the second intermediate connecting beam 40, the angle of the left side frame 10 relative to the second intermediate connecting beam 40 is reduced, and the right side frame 20 is rotated to the second walking position, the angle of the right side frame 20 relative to the second intermediate connecting beam 40 is increased, then the right side frame 20 moves forward, the right side frame 20 will be sequentially rotated to the fixed position and the first walking position from the second walking position, the angle of the right side frame 20 relative to the second intermediate connecting beam 40 is reduced, and the left side frame 10 is sequentially rotated to the fixed position and the second walking position from the first walking position, the angle of the left side frame 10 relative to the second intermediate connecting beam 40 is increased, and the alternating forward movement of the left side frame 10 and the right side frame 20 is thus cycled. In specific use, the user can support the left side frame 10 and the right side frame 20 by hands, and then drive the alternating forward movement of the left side frame 10 and the right side frame 20 by hands. Since the left side frame 10 and the right side frame 20 can always remain parallel, the left side frame 10 and the right side frame 20 realize four feet parallel landing. The left side frame 10 and the right side frame 20 have a curved structure due to structural reasons, so the structure of the left side frame 10 and the right side frame 20 will inevitably appear non-parallel structure, and therefore the left side frame 10 and the right side frame 20 keep parallel to each other during alternating forward movement in the utility model means that the forward direction of the left side frame 10 and the forward direction of the right side frame 20 are parallel to each other.

[0038] Please refer to Figure 6 When the sliding piece 41 is in sliding cooperation with the second limiting groove 13, the two second limiting grooves 13 correspond to limit the left side frame 10 and the right side frame 20 to be in the fixed position, at this time, the left side frame 10 and the right side frame 20 cannot be rotated relative to the second intermediate connecting beam 40, so that the two-in-one walking aid capable of parallel walking and four feet landing at the same time can be stably maintained in the form, so as to support the user to stand.

[0039] In some optional embodiments, the first intermediate connecting beam 30 comprises two connecting rods 31, one end of the two connecting rods 31 correspondingly rotates with the left frame 10 and the right frame 20, and the other end of the two connecting rods 31 are detachably connected with each other;

[0040] Please refer to Figure 7 When the other end of the two connecting rods 31 are detached, and the sliding member 41 is in sliding cooperation with the first limiting slot 12 or the second limiting slot 13, the left frame 10 and the right frame 20 can sequentially rotate in the direction away from the second intermediate connecting beam 40 to the folding position, the first walking position and the fixed position, i.e. due to the detachment of the two connecting rods 31, the parallelogram structure composed of the left frame 10, the right frame 20, the first intermediate connecting beam 30 and the second intermediate connecting beam 40, the left frame 10 can sequentially rotate from the fixed position to the first walking position and the folding position towards the second intermediate connecting beam 40, so that the left frame 10 can be folded towards the second intermediate connecting beam 40, the right frame 20 can sequentially rotate from the fixed position to the first walking position and the folding position towards the second intermediate connecting beam 40, so that the right frame 20 can be folded towards the second intermediate connecting beam 40, and the two connecting rods 31 can also rotate correspondingly relative to the left frame 10 and the right frame 20, so that the two connecting rods 31 also correspondingly realize folding relative to the left frame 10 and the right frame 20, thereby facilitating the reduction of the overall volume, and facilitating packaging, transportation, storage and carrying.

[0041] In the embodiment, the first limiting slot 12 corresponds to a larger central angle than the second limiting slot 13. When the other ends of the two connecting rods 31 are not connected, if the sliding piece 41 is in the first limiting slot 12, the left frame 10 and the right frame 20 can actually rotate relative to the second intermediate connecting beam 40 to the folding position, the first walking position, the fixed position, and the second walking position. If the sliding piece 41 is in the second limiting slot 13, the left frame 10 or the right frame 20 can actually rotate relative to the second intermediate connecting beam 40 to the folding position, the first walking position, and the fixed position. When the other ends of the two connecting rods 31 are connected, and the sliding piece 41 is in sliding fit with the second limiting slot 13, the left frame 10 and the right frame 20 can only be kept in the fixed position. If the left frame 10 needs to rotate relative to the second intermediate connecting beam 40 to the first walking position, the right frame 20 will be synchronously rotated relative to the second intermediate connecting beam 40 to the second walking position. However, the second limiting slot 13 limits the right frame 20 from rotating to the second walking position, thereby limiting the left frame 10 from rotating to the first walking position. The same applies to the right frame 20 rotating to the first walking position. Therefore, by switching the sliding piece 41 to different limiting slots, the walking state and the fixed state of the two-in-one walking aid that can walk in parallel and has four legs landing on the ground at the same time can be switched, which is simple in structure and convenient to operate.

[0042] In some optional embodiments, the other ends of the two connecting rods 31 are detachably connected to each other through a connecting sleeve 32. The connecting sleeve 32 can be sleeved on the outer sides of the two connecting rods 31, and can be detachably connected to the connecting rods 31 through buckle structures, bolt structures, ball structures, or threaded structures.

[0043] In some optional embodiments, one of the connecting rods 31 is provided with an inner hole 33, and the other connecting rod 31 is slidably arranged in the inner hole 33. When the left frame 10 and the right frame 20 are rotated to the folding position, the other connecting rod 31 is slid along the inner hole 33 to a storage position, so that the two connecting rods 31 are telescopic, and the other connecting rod 31 is hidden in one of the connecting rods 31, thereby reducing the volume and fixing the two connecting rods 31 to avoid shaking. In the embodiment, the connecting sleeve 32 is sleeved on the outer sides of the two connecting rods 31 and is fixed on the connecting rod 31 with the inner hole 33 and detachably connected to the other connecting rod 31. When the other connecting rod 31 needs to be stored, the other connecting rod 31 can be slid relative to the inner hole 33 by only disconnecting the connecting sleeve 32 from the other connecting rod 31, which is convenient to operate.

[0044] In some alternative embodiments, the connecting member assembly 11 comprises a first connecting member 14 and a second connecting member 15, the first connecting member 14 is provided with the first limiting slot 12 and the second limiting slot 13, the end of the second intermediate connecting beam 40 is installed between the first connecting member 14 and the second connecting member 15 of the same connecting member assembly 11 and is rotationally fitted with the first connecting member 14 and the second connecting member 15 respectively, thereby improving the stability of the rotationally fitted second intermediate connecting beam 40 and the connecting member assembly 11.

[0045] In order to facilitate the rotationally fitted second intermediate connecting beam 40 and the connecting member assembly 11, in some alternative embodiments, the two ends of the second intermediate connecting beam 40 are respectively provided with a first rotating part 42 and a second rotating part 43, the sliding member 41 is arranged on the first rotating part 42, and the first rotating part 42 and the second rotating part 43 of the same end of the second intermediate connecting beam 40 are rotationally fitted with the first connecting member 14 and the second connecting member 15 of the same connecting member assembly 11. In order to ensure that the four supporting feet 50 can land at the same time when the left side frame 10 and the right side frame 20 alternate, the first rotating part 42 and the second rotating part 43 are perpendicular to the second intermediate connecting beam 40, so that the second intermediate connecting beam 40 and the first rotating part 42 and the second rotating part 43 form an H-shaped frame, and since the first rotating part 42 and the second rotating part 43 are straight and cannot be turned outward, the situation that the four supporting feet 50 cannot land at the same time due to unevenness can be avoided.

[0046] In some alternative embodiments, the first connecting member 14 and the second connecting member 15 are both provided with a guide hole 16, the guide hole 16 of the first connecting member 14 is in communication with the first limiting slot 12 and the second limiting slot 13, the first limiting slot 12 and the second limiting slot 13 are arranged in sequence along the guide direction of the guide hole 16, and the end of the second intermediate connecting beam 40 is rotationally fitted with the guide hole 16 of the first connecting member 14 and the guide hole 16 of the second connecting member 15 of the same connecting member assembly 11, and when the sliding member 41 is disengaged from the first limiting slot 12 or the second limiting slot 13, the end of the second intermediate connecting beam 40 can slide along the guide hole 16. When it is necessary to switch the sliding member 41 and the first limiting slot 12 or the second limiting slot 13, the sliding member 41 is first disengaged from the first limiting slot 12 or the second limiting slot 13, then the second intermediate connecting beam 40 slides along the guide hole 16, so that the sliding member 41 is moved to the first limiting slot 12 or the second limiting slot 13, and then the sliding member 41 is slidably fitted with the first limiting slot 12 or the second limiting slot 13. In this embodiment, the second intermediate connecting beam 40 is slidably fitted and rotationally fitted with the guide hole 16 of the first connecting member 14 through the first rotating part 42, and the second intermediate connecting beam 40 is slidably fitted and rotationally fitted with the guide hole 16 of the second connecting member 15 through the second rotating part 43.

[0047] In some optional embodiments, the sliding member 41 is a positioning ball, which can also be called a positioning bead, a ball head plunger or a spring plunger, the structure and principle of which are known to those skilled in the art and will not be described here. The ball of the positioning ball is movably inserted into the first limiting groove 12 or the second limiting groove 13 from the guide hole 16 and is in sliding cooperation with the first limiting groove 12 or the second limiting groove 13. A user can press the ball of the positioning ball to make the ball of the positioning ball disengage from the first limiting groove 12 or the second limiting groove 13.

[0048] In some optional embodiments, the first limiting groove 12 and the second limiting groove 13 are provided with flared portions 17 away from the side of the guide hole 16. The flared portions 17 gradually expand in the direction away from the guide hole 16. The flared portions 17 facilitate the user's fingers to be inserted into the first limiting groove 12 or the second limiting groove 13 to press the positioning ball to make the ball of the positioning ball disengage from the first limiting groove 12 or the second limiting groove 13.

[0049] In some optional embodiments, one side of the first connecting member 14 and one side of the second connecting member 15 are provided with connecting seats 18. The first connecting member 14 and the second connecting member 15 are connected to the left side frame 10 or the right side frame 20 through the connecting seats 18. The connecting seat 18 of the first connecting member 14 and the connecting seat 18 of the second connecting member 15 on the left side frame 10 can be detachably mounted on the left side frame 10 through buckle structures, threaded structures or bolt structures, etc. The connecting seat 18 of the first connecting member 14 and the connecting seat 18 of the second connecting member 15 on the right side frame 20 can be detachably mounted on the right side frame 20 through buckle structures, threaded structures or bolt structures, etc. Thus, the installation of the connecting member assembly 11 is facilitated, and the structural complexity of the left side frame 10 or the right side frame 20 is reduced, which facilitates production and assembly.

[0050] Please refer to Figure 8 In some optional embodiments, the support leg 50 is formed with a lower eversion portion 51. The lower eversion portion 51 of the support leg 50 of the left side frame 10 extends obliquely toward the left side in the downward direction, and the lower eversion portion 51 of the support leg 50 of the right side frame 20 extends obliquely toward the right side in the downward direction. When a user is supported on the left side frame 10 and the right side frame 20, the lower eversion portion 51 of the support leg 50 is obliquely placed on the ground, the lower eversion portion 51 of the left side frame 10 has a certain eversion angle relative to the left side frame 10, so that the left side frame 10 receives an upward force and a rightward force from the support leg 50, the lower eversion portion 51 of the right side frame 20 has a certain eversion angle relative to the left side frame 10, so that the right side frame 20 receives an upward force and a leftward force from the support leg 50. Therefore, the left side frame 10 and the right side frame 20 receive forces from the user located in the middle, so that the forces on the left side frame 10 and the right side frame 20 are stable and do not sway left and right, which is beneficial to improve the stability of human body support.

[0051] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the present application, which should be limited only by the appended claims and their equivalents.

Claims

1. A two-in-one walking aid which can walk in parallel and land on four legs at the same time, characterized in that, The utility model relates to a two-in-one walking aid that can walk in parallel and four feet land at the same time, which comprises: left and right side frames, both of which are provided with a connecting piece assembly, the bottom of the left side frame and the bottom of the right side frame are both provided with two supporting feet, the connecting piece assembly is provided with a first limiting slot and a second limiting slot; a first intermediate connecting beam, both ends of the first connecting rod are rotatably connected with the left and right side frames respectively; a second intermediate connecting beam, both ends of the second intermediate connecting beam are rotatably connected with two connecting piece assemblies respectively, the second intermediate connecting beam is provided with two sliding pieces, the sliding pieces are detachably and slidably connected with the first limiting slot or the second limiting slot on the same connecting piece assembly; when the sliding pieces are slidably connected with the first limiting slot, the left and right side frames can be sequentially rotated in the direction away from the second intermediate connecting beam to a first walking position, a fixed position and a second walking position relative to the second intermediate connecting beam, when the left and right side frames alternately move in parallel, the two supporting feet of the left side frame and the two supporting feet of the right side frame land at the same time; when the sliding pieces are slidably connected with the second limiting slot, the two second limiting slots correspondingly limit the left and right side frames to be in the fixed position.

2. The two-in-one walking aid that can walk in parallel and four feet land at the same time according to claim 1, wherein: the first intermediate connecting beam comprises two connecting rods, one end of each of the two connecting rods is rotatably connected with the left and right side frames respectively, and the other end of each of the two connecting rods is detachably connected with each other; when the other end of each of the two connecting rods is disconnected with each other, and the sliding pieces are slidably connected with the first limiting slot or the second limiting slot, the left and right side frames can be sequentially rotated in the direction away from the second intermediate connecting beam to a folding position, the first walking position and the fixed position relative to the second intermediate connecting beam.

3. The two-in-one walking aid according to claim 2, wherein: one of the connecting rods is provided with an inner hole, and the other connecting rod is slidably arranged in the inner hole, when the left and right side frames are rotated to the folding position, the other connecting rod is slid along the inner hole to a storage position.

4. The two-in-one walking aid according to any one of claims 1 to 3, characterized in that: the connecting piece assembly comprises a first connecting piece and a second connecting piece, the first limiting slot and the second limiting slot are arranged on the first connecting piece, and the end of the second intermediate connecting beam is mounted between the first connecting piece and the second connecting piece of the same connecting piece assembly and rotatably connected with the first connecting piece and the second connecting piece respectively.

5. The two-in-one walking aid according to claim 4, wherein: both ends of the second intermediate connecting beam are respectively provided with a first rotating part and a second rotating part, the sliding piece is arranged on the first rotating part, and the first rotating part and the second rotating part of the same end of the second intermediate connecting beam are rotatably connected with the first connecting piece and the second connecting piece of the same connecting piece assembly respectively.

6. The two-in-one walking aid according to claim 4, wherein: The first connecting piece and the second connecting piece are provided with guide holes, the guide hole of the first connecting piece is communicated with the first limiting slot and the second limiting slot, the first limiting slot and the second limiting slot are arranged in sequence along the guiding direction of the guide hole, the end of the second intermediate connecting beam is rotationally matched with the guide hole of the first connecting piece and the guide hole of the second connecting piece of the same connecting piece assembly, and when the sliding piece is separated from the first limiting slot or the second limiting slot, the end of the second intermediate connecting beam can slide along the guide hole.

7. The two-in-one walking aid according to claim 6, wherein: The sliding piece is a positioning ball, the positioning ball is movably extended into the first limiting slot or the second limiting slot from the guide hole, and is slidably matched with the first limiting slot or the second limiting slot.

8. The two-in-one walking aid according to claim 7, characterized in that: The first limiting slot and the second limiting slot are provided with flared portions on the side away from the guide hole, and the flared portions gradually expand in the direction away from the guide hole.

9. The two-in-one walking aid which can walk in parallel and land on four legs simultaneously according to claim 5, characterized in that: One side of the first connecting piece and one side of the second connecting piece are provided with connecting seats, and the first connecting piece and the second connecting piece are connected with the left side frame or the right side frame through the connecting seats.

10. The two-in-one walking aid which can walk in parallel and land on four legs at the same time according to any one of claims 1-3, characterized in that: The support leg is formed with a lower eversion portion, the lower eversion portion of the support leg of the left side frame gradually extends to the left in the downward direction, and the lower eversion portion of the support leg of the right side frame gradually extends to the right in the downward direction.

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