Adjustable walking distance fixing device and walking aid

Abstract

The invention relates to the technical field of walking aids, and discloses an adjustable walking distance device and a walking aid, and the adjustable walking distance device comprises a clutch, a walking mechanism, a walking distance adjusting mechanism, a reset mechanism and the like. According to the adjustable walking distance device, the walking distance adjusting mechanism, the reset mechanism and the brake mechanism corresponding to the clutch are arranged, so that the walking distance function can be achieved, and the adjustable walking distance device has the advantages that walking is safe and stable, the walking distance is accurate, and the use fatigue of a patient is further reduced; meanwhile, the length of the walking distance can be automatically adjusted, and the walking distance can be conveniently adjusted according to the walking distance of a user so as to meet the requirements of different walking distances of different users; in addition, the whole adjusting type walking distance fixing device does not use energy to work, so that the environment is protected, and the energy charging and using trouble of a user is reduced; the walking aid can be widely applied to walking aids and walking-aid trolleys used by old people and patients with lower limb rehabilitation.

Description

Technical Field

[0001] The present invention relates to the technical field of walking aids, and in particular to an adjustable walking distance determining device and a walking aid. Background Art

[0002] A walker is a device that allows elderly people and patients with mobility impairments to walk like normal people. Currently, most walkers are fixed and integrated, requiring users to lift the walker for a certain distance before moving themselves, which wastes the user's physical strength.

[0003] A Chinese utility model patent with publication number CN 215960990 U discloses a portable walker for postoperative care of leg bones, which includes two groups of support components, each group of the support components is fixedly connected to a linkage component, and two groups of folding components are symmetrically fixedly connected between the two groups of support components. By placing the palm on the top of the support frame and passing the fingers through the inside of the first movable member, in actual use, the device is easily pushed to move through four groups of universal wheels. The device is moved to a certain distance, and the fingers pull the first movable member to move upward. Under the action of the two groups of first rotating members and the two groups of second rotating members, the active swing arm drives the connecting block to rotate counterclockwise around the connecting column, thereby pushing the driven swing arm to move downward, so that the second movable member drives the bottom ends of the two groups of limit columns to contact the ground, thereby limiting the position of the device. Although the portable walker provided by the utility model does not need to be lifted a certain distance, it saves the user's physical strength compared to traditional walkers; however, its walking distance is controlled by the walking distance of the user pushing the device, and it does not have a walking distance-fixing function. The user needs to exert force to control the walking distance, and there is a risk of accidental falling when the walking distance is too large. Summary of the invention

[0004] The purpose of the present invention is to provide an adjustable walking distance determining device which is safe, stable, accurate in walking distance, more labor-saving and safer, and at least provides a beneficial choice or creates conditions for solving one or more technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A variable walking distance device, comprising: a clutch, having a first rotating wheel, a second rotating wheel, and a clutch control mechanism, wherein a clutch structure is formed between the first rotating wheel and the second rotating wheel, and the clutch control mechanism is used to realize the clutch between the first rotating wheel and the second rotating wheel; a walking mechanism, which is connected to the first rotating wheel through a first transmission mechanism, and an anti-reversal mechanism is provided corresponding to the first transmission mechanism; a walking distance adjustment mechanism, having a plurality of fixed distance gears corresponding to the second rotating wheel, and different fixed distance gears are used to limit different maximum rotation angles of the second rotating wheel; a reset mechanism, which is connected to the second rotating wheel and is used to realize automatic reset of the second rotating wheel after the second rotating wheel is separated from the first rotating wheel.

[0007] More preferably, the first rotating wheel and the second rotating wheel are connected by a clutch shaft, the clutch shaft is passed through the first rotating wheel, one end of the clutch shaft is fixed to the second rotating wheel, and the other end of the clutch shaft is provided with a limit rod corresponding to the walking distance adjustment mechanism; the maximum rotation angle of the second rotating wheel is limited by the limit rod and the stopper of the walking distance adjustment mechanism.

[0008] More preferably, the clutch control mechanism includes a separation handle, a separation pull rope, a separation push member, a reset push member, a clutch spring and a handle reset spring, the separation push member and the reset push member are parallel to each other and are both rotatably installed, the first rotating wheel and the second rotating wheel are installed between the separation push member and the reset push member, the two ends of the clutch shaft are respectively abutted against the separation push member and the reset push member, the separation handle is connected to the separation push member through the separation pull rope and is used to pull the separation push member to rotate, the clutch spring is used to realize the rotational reset of the separation push member and the reset push member, and the handle reset spring is used to realize the release and reset of the separation handle.

[0009] More preferably, the first rotating wheel and the second rotating wheel are meshed with each other through tooth plates and tooth columns that cooperate with each other.

[0010] More preferably, the walking distance adjustment mechanism includes a rotatably mounted distance adjustment disk, on which a plurality of rotation positioning holes and a positioning rod are provided, the rotation positioning holes are used to realize the positioning of the distance adjustment disk at different rotation angles, and the positioning rod cooperates with the second rotating wheel to limit the maximum rotation angle of the second rotating wheel.

[0011] More preferably, a braking mechanism is provided corresponding to the first rotating wheel to realize traveling braking; the braking mechanism is linked with the clutch control mechanism, and when the clutch control mechanism controls the first rotating wheel and the second rotating wheel to separate, the braking mechanism realizes braking of the first rotating wheel; when the clutch control mechanism controls the first rotating wheel and the second rotating wheel to close, the braking mechanism releases the braking of the first rotating wheel.

[0012] More preferably, the braking mechanism includes a swingably mounted brake rod, one end of which is provided with a brake pad corresponding to the first rotating wheel, and the other end of which is provided with a brake pull rod connected to the control clutch mechanism; the brake pull rod is in sliding contact with the brake rod through a sliding wheel, and the brake pull rod is linked to the clutch control mechanism.

[0013] More preferably, the walking mechanism includes two groups of walking casters, and the two groups of walking casters are synchronously driven through a second transmission mechanism.

[0014] More preferably, the reset mechanism is a reset spring.

[0015] On the other hand, the present invention also provides a walking aid having an adjustable walking distance determining device as described above.

[0016] The technical solution provided by the present invention has at least the following technical effects or advantages.

[0017] The present invention provides an adjustable walking distance-fixing device, which can realize the walking distance-fixing function by arranging a walking distance-fixing adjusting mechanism, a resetting mechanism and a braking mechanism corresponding to the clutch, and has the advantages of safe and stable walking, accurate walking distance, and further reducing patient fatigue; at the same time, the length of the walking distance-fixing device can be adjusted independently, and the walking distance can be conveniently adjusted according to the walking distance of the user to meet the different walking distance length requirements of different users; in addition, the entire adjustable walking distance-fixing device does not use energy to work, which is environmentally friendly and reduces the trouble of energy charging and use for users; it can be widely used in walkers and walking trolleys used by the elderly and lower limb rehabilitation patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic structural diagram of the adjustable walking and spacing device provided by the present invention.

[0019] Figure 2 The figure shows a schematic diagram of the clutch disengagement state of the adjustable walking and spacing device provided by the present invention.

[0020] Figure 3 Shown is a schematic diagram of the assembly of the first rotating wheel and the second rotating wheel.

[0021] Figure 4 Shown Figure 3 Structural breakdown diagram.

[0022] Figure 5 Shown is a schematic structural diagram of the first rotating wheel.

[0023] Figure 6 Shown is a schematic structural diagram of the second rotating wheel.

[0024] Figure 7 Shown is a schematic diagram of the structure of the walking and spacing adjustment mechanism.

[0025] Figure 8 Shown is a schematic structural diagram of the braking mechanism.

[0026] Fig. 9 Shown is the transmission schematic diagram of the walking mechanism.

[0027] Fig.10 Shown is another transmission schematic diagram of the walking mechanism.

[0028] Fig.11 Shown is a schematic structural diagram of a steering auxiliary wheel.

[0029] Description of Figure Numbers.

[0030] 1: Clutch, 2: Traveling mechanism, 3: Walking distance adjustment mechanism, 4: Reset mechanism, 5: Braking mechanism, 6: First transmission mechanism, 7: Anti-reverse mechanism.

[0031] 1-1: first rotating wheel, 1-2: second rotating wheel, 1-3: clutch control mechanism, 1-4: clutch shaft, 1-5: limit rod, 1-6: gear plate, 1-7: gear column.

[0032] 1-3-1: separation handle, 1-3-2: separation pull rope, 1-3-3: separation push member, 1-3-4: reset push member, 1-3-5: clutch spring, 1-3-6: handle reset spring.

[0033] 2-1: walking caster, 2-2: second transmission mechanism, 2-3: steering auxiliary wheel.

[0034] 3-1: Adjustment disk, 3-2: Rotation positioning hole, 3-3: Positioning rod, 3-4: Adjustment handle, 3-5: Fixing buckle.

[0035] 5-1: brake lever, 5-2: brake pad, 5-3: brake lever, 5-4: sliding wheel. DETAILED DESCRIPTION

[0036] The following is a further description of the specific implementation of the present invention in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the present invention are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the present invention, but cannot be understood as limiting the present invention.

[0037] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention.

[0038] Reference Figure 1 , Figure 2 As shown, an adjustable walking distance device is installed on a walking aid, including a clutch 1, a walking mechanism 2, a walking distance adjustment mechanism 3, a reset mechanism 4 and a braking mechanism 5.

[0039] The clutch 1 comprises a first rotating wheel 1-1 and a second rotating wheel 1-2 which are rotatably mounted, and a clutch control mechanism 1-3. A clutch structure is formed between the first rotating wheel 1-1 and the second rotating wheel 1-2. The clutch control mechanism 1-3 is used to realize the clutch between the first rotating wheel 1-1 and the second rotating wheel 1-2. The walking mechanism 2 is connected to the first rotating wheel 1-1 through a first transmission mechanism 6, and an anti-reversal mechanism 7 is provided corresponding to the first transmission mechanism 6. The walking distance adjustment mechanism 3 comprises a plurality of different distance gears which are arranged corresponding to the second rotating wheel 1-2, and the different distance gears are used to limit the different maximum rotation angles of the second rotating wheel 1-2, so as to achieve the purpose of walking distance and adjustable walking distance. The reset mechanism 4 is connected to the second rotating wheel 1-2, and is used to realize the automatic reset of the second rotating wheel 1-2 after the second rotating wheel 1-2 is separated from the first rotating wheel 1-1, so as to prepare for the next walking distance. The braking mechanism 5 is arranged corresponding to the first rotating wheel 1-1 and is used to realize walking braking.

[0040] The present embodiment provides an adjustable walking distance determining device, and its working principle is as follows.

[0041] 1) Adjust the walking distance adjustment mechanism 3 to a suitable gear according to the walking distance of the user.

[0042] 2) The user can push the walker forward. When the walker moves forward, the first wheel 1-1 and the second wheel 1-2 of the clutch rotate together. When the second wheel 1-2 rotates to the maximum angle limited by the corresponding gear, the first wheel 1-1 and the second wheel 1-2 are stopped and cannot continue to rotate. At this time, the walker cannot move forward, and cannot move backward due to the action of the anti-reversal mechanism 7, so as to achieve the effect of walking distance determination.

[0043] 3) Operate the clutch control mechanism 1-3 to separate the first rotating wheel 1-1 and the second rotating wheel 1-2. At this time, the second rotating wheel 1-2 is reset under the action of the reset mechanism 4; continue to operate the clutch control mechanism 1-3 to close the first rotating wheel 1-1 and the second rotating wheel 1-2, and then proceed to the next step of walking.

[0044] Repeat steps 2) and 3) to achieve a continuous walking process.

[0045] It should be noted that the braking mechanism 5 is linked with the clutch control mechanism 1-3. When the clutch control mechanism 1-3 controls the first rotating wheel 1-1 and the second rotating wheel 1-2 to separate, the braking mechanism 5 realizes the braking of the first rotating wheel 1-1; at this time, the walker can neither move forward nor backward; when the clutch control mechanism 1-3 controls the first rotating wheel 1-1 and the second rotating wheel 1-2 to close, the braking mechanism 5 releases the braking of the first rotating wheel 1-1 to facilitate the next step of walking.

[0046] Here, linking the brake mechanism 5 with the clutch control mechanism 1-3 can prevent the walker from accidentally moving forward when the clutch is engaged, thereby ensuring safe use.

[0047] Compared with the prior art, the adjustable walking distance fixing device provided in this embodiment can realize the walking distance fixing function by setting a walking distance fixing adjusting mechanism 3, a reset mechanism 4 and a braking mechanism 5 corresponding to the clutch 1, and has the advantages of safe and stable walking, accurate walking distance, and further reducing the patient's fatigue; at the same time, the length of the walking distance fixing device can be adjusted independently, and the walking distance can be conveniently adjusted according to the user's walking distance to meet the different walking distance length requirements of different users; in addition, the entire adjustable walking distance fixing device does not use energy to work, which is environmentally friendly and reduces the trouble of energy charging and use for users; it can be widely used in walkers and walking trolleys used by the elderly and lower limb rehabilitation patients.

[0048] Combination Figure 3 , Figure 4 As shown, in this embodiment, the first rotating wheel 1-1 and the second rotating wheel 1-2 are connected by a clutch shaft 1-4, and the clutch shaft 1-4 is passed through the first rotating wheel 1-1. One end of the clutch shaft 1-4 is fixed to the second rotating wheel 1-2, and the other end of the clutch shaft 1-4 is provided with a limiting rod 1-5 corresponding to the walking distance adjustment mechanism 3; the maximum rotation angle of the second rotating wheel 1-2 is limited by the limiting rod 1-5 and the stopper of the walking distance adjustment mechanism 3, thereby achieving the effect of limiting the maximum walking distance.

[0049] Combination Figure 5 , Figure 6As shown, the meshing mode between the first rotating wheel 1-1 and the second rotating wheel 1-2 is through the meshing of the tooth plate 1-6 and the tooth column 1-7 that cooperate with each other. The tooth column 1-7 is arranged on the first rotating wheel 1-1 and has a circular single-sided tooth structure, and the tooth plate 1-6 is arranged on the second rotating wheel 1-2 and has a straight plate shape.

[0050] In some embodiments, the positions of the tooth plate 1-6 and the tooth column 1-7 can be interchanged, for example, the tooth plate 1-6 is disposed on the first rotating wheel 1-1, and the tooth column 1-7 is disposed on the second rotating wheel 1-2.

[0051] In some embodiments, the tooth columns 1-7 can be distributed over the entire edge area of ​​the first rotating wheel 1-1 to form a double-sided tooth positioning.

[0052] It should be noted that the specific clutch connection structure of the first wheel 1-1 and the second wheel 1-2 is not limited to the clutch connection with the clutch shaft as exemplified above. Technical personnel in this field can adopt other clutch methods that are currently known or can be realized in the future according to different actual needs; the meshing between the first wheel 1-1 and the second wheel 1-2 is not limited to the meshing method of the tooth plate 1-6 and the tooth column 1-7. Technical personnel in this field can adopt other meshing methods that are currently known or can be realized in the future according to different actual needs; it is not limited to this embodiment.

[0053] Recombination Figure 1 , Figure 2 As shown, the clutch control mechanism 1-3 includes a separation handle 1-3-1, a separation pull rope 1-3-2, a separation pusher 1-3-3, a reset pusher 1-3-4, a clutch spring 1-3-5 and a handle reset spring 1-3-6, the separation pusher 1-3-3 and the reset pusher 1-3-4 are parallel to each other and are rod-shaped and both are rotatably installed, the first rotating wheel 1-1 and the second rotating wheel 1-2 are installed between the separation pusher 1-3-3 and the reset pusher 1-3-4, and the two ends of the clutch shaft 1-4 are respectively The separation handle 1-3-1 is connected to the separation push member 1-3-3 through the separation pull rope 1-3-2, and is used to pull the separation push member 1-3-3 to rotate. The clutch spring 1-3-5 is used to realize the rotational reset of the separation push member 1-3-3 and the reset push member 1-3-4 (reset after releasing the separation handle tension). The handle reset spring 1-3-6 is used to realize the release and reset of the separation handle 1-3-1.

[0054] When working, the clutch 1 can be separated and closed by operating the separation handle 1-3-1, and the operation is simple and quick. It should be noted that the clutch control mechanism 1-3 is a mechanism that can be operated to separate and close the clutch 1. Those skilled in the art can also use other clutch control mechanisms of existing known structures or those that can be realized in the future according to different actual needs, and are not limited to this embodiment.

[0055] Combination Figure 1 , Figure 2 , Figure 7 As shown, the walking distance adjustment mechanism 3 includes a rotatably mounted distance adjustment disk 3-1, on which a plurality of rotation positioning holes 3-2 and a positioning rod 3-3 are provided. The rotation positioning holes 3-2 are arranged in a circle to realize the positioning of the distance adjustment disk 3-1 at different rotation angles, and the positioning rod 3-3 cooperates with the second rotating wheel 1-2 to limit the maximum rotation angle of the second rotating wheel 1-2.

[0056] Preferably, an adjustment handle 3-4 and a fixing buckle 3-5 are also provided corresponding to the adjustment disk 3-1. The adjustment handle 3-4 is used to rotate the adjustment disk 3-1 to facilitate rotation adjustment; the fixing buckle 3-5 is used to realize the clamping and fixing of the adjustment disk 3-1 when it is rotated into place to avoid accidental loosening of the adjustment disk 3-1.

[0057] It should be noted that the walking distance adjustment mechanism 3 can also adopt other forms of distance adjustable mechanisms that are currently known or can be realized in the future, as long as it can cooperate with the second rotating wheel to achieve the purpose of limiting the maximum rotation angle of the second rotating wheel.

[0058] Combination Figure 8 As shown, the brake mechanism 5 includes a swingably mounted brake rod 5-1, one end of the brake rod 5-1 is provided with a brake pad 5-2 corresponding to the first rotating wheel 1-1, and the other end corresponding to the brake rod 5-2 is provided with a brake pull rod 5-3; the brake pull rod 5-3 is in sliding contact with the brake rod 5-1 through a sliding wheel 5-4; the brake pull rod 5-3 is linked with the clutch control mechanism 1-3, and the separation handle 1-3-1 of the clutch control mechanism 1-3 is operated to realize the tightening of the brake rod 5-3 and the release of the brake while the brake is released.

[0059] The brake mechanism 5 provided in this embodiment has the characteristics of simple structure and good braking effect. Obviously, those skilled in the art may also adopt brake mechanisms of other structural forms known in the art or to be realized in the future according to different actual needs; it is not limited to this embodiment.

[0060] Combination Figure 9-11As shown, in this embodiment, the walking mechanism 2 preferably includes two groups of walking casters 2-1, and the two groups of walking casters 2-1 are synchronously driven by the second transmission mechanism 2-2. In this way, multiple wheels can walk, stop, and brake synchronously, with better walking effect and higher safety.

[0061] In this embodiment, the second transmission mechanism 2-2 has a plurality of steering auxiliary wheels 2-3 with V-groove structures, which constitute a synchronous drive for yaw steering. The steering swing is convenient, and the walker does not need to be lifted up to steer when turning. The direction can be turned very conveniently by applying a certain force.

[0062] In this embodiment, the reset mechanism 4 is preferably a reset spring, which has a simple structure and is easy to implement.

[0063] It should be noted that the specific structural components of the first transmission mechanism 6, the anti-reversal mechanism 7, and the second transmission mechanism 2-2 are common technical knowledge mastered by those skilled in the art and will not be elaborated here.

[0064] It should also be noted that, in the description of the present invention, directional words such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0065] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "at least" means one or more, unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the invention, unless otherwise specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “below”, and “above” a second feature includes that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “above”, “below”, and “below” a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] Through the description of the above structure and principle, those skilled in the art should understand that the present invention is not limited to the above specific implementations, and improvements and substitutions based on the present invention using the known technology in the art fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims and their equivalents. Parts not described in the specific implementations are prior art or common knowledge.

Claims

1. An adjustable walking distance device, characterized in that: include: A clutch, comprising a first rotating wheel and a second rotating wheel which are rotatably mounted, and a clutch control mechanism, wherein a clutch structure is formed between the first rotating wheel and the second rotating wheel, and the clutch control mechanism is used to realize the clutch between the first rotating wheel and the second rotating wheel; A walking mechanism is connected to the first rotating wheel through a first transmission mechanism, and an anti-reversal mechanism is provided corresponding to the first transmission mechanism; A walking distance adjustment mechanism, comprising a plurality of distance gears corresponding to the second rotating wheel, wherein different distance gears are used to limit different maximum rotation angles of the second rotating wheel; A reset mechanism is connected to the second rotating wheel and is used to automatically reset the second rotating wheel after the second rotating wheel is separated from the first rotating wheel.

2. The adjustable walking distance device according to claim 1, characterized in that: The first rotating wheel and the second rotating wheel are connected by a clutch shaft, and the clutch shaft is passed through the first rotating wheel. One end of the clutch shaft is fixed to the second rotating wheel, and the other end of the clutch shaft is provided with a limit rod corresponding to the walking distance adjustment mechanism; the maximum rotation angle of the second rotating wheel is limited by the limit rod and the stopper of the walking distance adjustment mechanism.

3. The adjustable walking distance device according to claim 2, characterized in that: The clutch control mechanism includes a separation handle, a separation pull rope, a separation push member, a reset push member, a clutch spring and a handle reset spring. The separation push member and the reset push member are parallel to each other and are both rotatably installed. The first rotating wheel and the second rotating wheel are installed between the separation push member and the reset push member. The two ends of the clutch shaft are respectively abutted against the separation push member and the reset push member. The separation handle is connected to the separation push member through the separation pull rope and is used to pull the separation push member to rotate. The clutch spring is used to realize the rotational reset of the separation push member and the reset push member. The handle reset spring is used to realize the release and reset of the separation handle.

4. The adjustable walking distance device according to claim 1, characterized in that: The first rotating wheel and the second rotating wheel are meshed with each other through tooth plates and tooth columns that cooperate with each other.

5. The adjustable walking distance device according to claim 1, characterized in that: The walking distance adjustment mechanism includes a rotatably mounted distance adjustment disk, on which are provided a plurality of rotation positioning holes and a positioning rod. The rotation positioning holes are used to realize the positioning of the distance adjustment disk at different rotation angles, and the positioning rod cooperates with the second rotating wheel to limit the maximum rotation angle of the second rotating wheel.

6. The adjustable walking distance device according to claim 1, characterized in that: A braking mechanism is provided corresponding to the first rotating wheel to realize traveling braking; the braking mechanism is linked with the clutch control mechanism, and when the clutch control mechanism controls the first rotating wheel and the second rotating wheel to separate, the braking mechanism realizes braking of the first rotating wheel; when the clutch control mechanism controls the first rotating wheel and the second rotating wheel to close, the braking mechanism releases the braking of the first rotating wheel.

7. The adjustable walking distance device according to claim 6, characterized in that: The braking mechanism includes a swingably mounted brake rod, one end of which is provided with a brake pad corresponding to the first rotating wheel, and the other end of which is provided with a brake pull rod connected to the control clutch mechanism; the brake pull rod is in sliding contact with the brake rod through a sliding wheel, and the brake pull rod is linked to the clutch control mechanism.

8. The adjustable walking distance device according to claim 1, characterized in that: The walking mechanism comprises two groups of walking casters, and the two groups of walking casters are synchronously driven through a second transmission mechanism; the second transmission mechanism has a plurality of groups of steering auxiliary wheels with V-groove structures, which constitute a yaw steering synchronous drive.

9. The adjustable walking distance device according to claim 1, characterized in that: The reset mechanism is a reset spring.

10. A walking aid, characterized in that: A device for adjusting the walking distance according to any one of claims 1 to 9.

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