Single-joint four-wheel rollator for old people

Abstract

The utility model discloses a single-joint four-wheel rollator for old people, which comprises two frames, handrails are arranged above the two frames, first connecting columns are fixedly connected to the sides, close to each other, of the two frames, second connecting columns are fixedly connected to the two sides of the two frames respectively, and the first connecting columns and the second connecting columns are fixedly connected to the two sides of the two frames respectively. And first universal wheels are mounted below the two frames. The single-joint four-wheel rollator for the old people relates to the technical field of rollator, realizes quick adjustment of the positions of handrails through cooperation of hollow columns, threaded columns, hand wheels, transverse columns, curved columns, inserting rods, vertical columns and moving assemblies, and solves the problems that in the process of adjusting the handrails of an existing rollator, the handrails on the two sides need to be independently adjusted, and the working efficiency is high. After the handrail on one side is adjusted every time, the hand action needs to be stopped, the state of the handrail on the other side is carefully observed and compared, whether the two handrails are located at the same height or not is judged, and therefore the use effect of an existing rollator is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of walking aid vehicle, concretely is a single joint four -wheel old people walking aid vehicle. BACKGROUND

[0002] The old people walking aid vehicle is a kind of walking tool specially designed for the old people, usually with stable, safe, easy operation etc., it can help the old people conveniently travel, reduce the burden when walking, improve the quality of life.

[0003] The existing old people walking aid vehicle is adjusted two sides' handrails when using, handrail is adjusted to the appropriate position, then the old people hold handrail, moves with the aid of walking aid vehicle;

[0004] But, the existing walking aid vehicle needs to adjust two sides' handrails separately in the process of adjusting handrail, after adjusting one side handrail every time, it is necessary to stop the action in hand, carefully observes and compares the state of the other side handrail, judges whether two handrails are in the same height, leads to needing repeatedly adjusting, thereby reduce the use effect of existing walking aid vehicle. UTILITY MODEL CONTENTS

[0005] In view of the deficiency of prior art, the utility model provides a single joint four -wheel old people walking aid vehicle, solve the problem that the existing walking aid vehicle needs to adjust two sides' handrails separately in the process of adjusting handrail, after adjusting one side handrail every time, it is necessary to stop the action in hand, carefully observes and compares the state of the other side handrail, judges whether two handrails are in the same height, leads to needing repeatedly adjusting, thereby reduce the use effect of existing walking aid vehicle.

[0006] To realize the above-mentioned purpose, the utility model is realized through the following technical schemes: a single joint four -wheel old people walking aid vehicle, including frame, the number of frame is two, the upper of two frames is provided with handrail, the side close to of two frames is fixedly connected with first connecting column, the two sides of two frames are fixedly connected with second connecting column, the lower of two frames is installed with first universal wheel, single joint four -wheel old people walking aid vehicle still includes adjusting mechanism, adjusting mechanism is arranged at the outside of frame;Safety mechanism is arranged in the inside of adjusting mechanism;Auxiliary mechanism is arranged at the side of frame;Wherein, the position of handrail is adjusted quickly through adjusting mechanism, adjusting mechanism is limited through safety mechanism, the whole walking aid vehicle is supported through auxiliary mechanism.

[0007] Preferably, the adjusting mechanism comprises a hollow column, which is fixedly connected to one side of the frame close to each other; a threaded column is rotatably connected to the inner wall of the hollow column through a bearing; a hand wheel is fixedly connected to the bottom of the threaded column; a cross column is threadedly connected to the outer wall of the threaded column; the number of curved columns is two, which are respectively attached to the two sides of the cross column; the number of insertion rods is two, which are fixedly connected to the side of the two curved columns away from each other, and penetrate through the hollow column and movably connected with the hollow column; the number of vertical columns is two, which penetrate through the two frames and movably connected with the two frames, and are inserted into the outer wall of the insertion rod, and the top is fixedly connected to the inner wall of the handrail; the moving assembly is arranged in the inside of the hollow column; wherein, under the drive of the hand wheel, the threaded column moves the curved column to drive the insertion rod to move away from the groove in the vertical column, thereby adjusting the handrail.

[0008] Preferably, the moving assembly comprises a sliding block, which is fixedly connected to the outer wall of the cross column and is slidingly connected to the inner wall of the hollow column; the number of connecting pieces is two, which are fixedly connected to the outer wall of the insertion rod; the number of first springs is two, which are respectively installed at the outer wall of the connecting piece and the outer wall of the frame; wherein, under the drive of the cross column, the sliding block moves in the hollow column, and under the drive of the insertion rod, the connecting piece deforms the first spring.

[0009] Preferably, the safety mechanism comprises a sleeve, the number of sleeves is two, which are fixedly connected to the bottom of the connecting piece; the number of vertical rods is two, which are sleeved on the inner wall of the sleeve; the number of second springs is two, which are respectively installed at the inner wall of the sleeve and the top of the vertical rod; the number of through holes is two, which are provided in the bottom of the hollow column; wherein, under the drive of the vertical rod, the second spring deforms, so that the vertical rod moves in the sleeve and leaves the through hole.

[0010] Preferably, the auxiliary mechanism comprises a hollow block, the number of hollow blocks is two, which are fixedly connected to the side of the second connecting column away from each other; the number of vertical columns is two, which are inserted into the inner wall of the two hollow blocks; the number of threaded holes is four, which are provided on the surface of the vertical column; the number of screws is four, which are respectively threadedly connected to the inner wall of the hollow block and the inner wall of the threaded hole; the number of second universal wheels is two, which are installed at the bottom of the two vertical columns; wherein, the vertical column is inserted into the hollow block, so that the screw is rotated into the threaded hole, and the second universal wheel is installed on the frame to support the whole scooter.

[0011] Beneficial effects

[0012] The utility model provides a single joint four -wheeled old people's walking aid vehicle. Have the following beneficial effects: the single joint four -wheeled old people's walking aid vehicle cooperates through hollow column, threaded column, hand wheel, cross column, curved column, plug rod, vertical column and moving assembly, realizes the position of handrail is adjusted fast, need not repeatedly adjust, solves the walking aid vehicle of existing in the process of adjusting handrail, need to adjust the handrail of two sides separately, after every time adjusting one side handrail, all want to stop the action in hand, carefully observes and compares the state of the other side handrail, judges two handrails whether on the same height, leads to need repeatedly adjust, thereby reduce the use effect problem of existing walking aid vehicle.

[0013] Cooperate through sleeve, stand, second spring and through -hole, realize the adjustment mechanism is positioned, prevent the old person from accidentally touching hand wheel, make hand wheel rotate, solve when the old person accidentally touches hand wheel, because not to the adjustment mechanism is positioned, lead to the problem that hand wheel can rotate. DRAWINGS

[0014] Figure 1 It is the structure schematic drawing of the utility model;

[0015] Figure 2 It is Figure 1 The explosion map;

[0016] Figure 3 It is Figure 1 The structure schematic drawing of hollow heart column, vertical column and frame;

[0017] Figure 4 It is Figure 3 The enlarged view of A in

[0018] Figure 5 It is Figure 1 The structure schematic drawing of hollow heart column, stand and second universal wheel.

[0019] In the drawing: 1, frame;2, handrail;3, first universal wheel;4, first connecting column;5, second connecting column;6, adjustment mechanism;61, hollow column;62, threaded column;63, hand wheel;64, cross column;65, curved column;66, plug rod;67, vertical column;68, moving assembly;681, sliding block;682, connecting piece;683, first spring;7, safety mechanism;71, sleeve;72, stand;73, second spring;74, through -hole;8, auxiliary mechanism;81, hollow block;82, stand;83, screw;84, threaded hole;85, second universal wheel. SPECIFIC IMPLEMENTATION

[0020] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] The existing walking aid needs to adjust the two sides of the handrail separately, and after adjusting one side of the handrail each time, the action in hand needs to be stopped, the state of the other side of the handrail is observed and compared carefully, and whether the two handrails are at the same height is judged, which leads to repeated adjustment, thereby reducing the use effect of the existing walking aid.

[0022] Therefore, the utility model provides a single joint four-wheel walking aid for old people, solves the cooperation of the hollow column, the threaded column, the hand wheel, the horizontal column, the curved column, the inserting rod, the vertical column and the moving assembly, realizes the quick adjustment of the position of the handrail, does not need repeated adjustment, solves the problem that the existing walking aid needs to adjust the two sides of the handrail separately in the process of adjusting the handrail, after adjusting one side of the handrail each time, the action in hand needs to be stopped, the state of the other side of the handrail is observed and compared carefully, and whether the two handrails are at the same height is judged, which leads to repeated adjustment, thereby reducing the use effect of the existing walking aid.

[0023] Through the personnel in the art, the parts in the case are connected in turn, and the specific connection and operation sequence should refer to the following working principle, and the detailed connection means is the public technical knowledge in the art, and the following mainly introduces the working principle and process.

[0024] Embodiment one: by Figures 1-5It can be known that a single joint four-wheel old person walking aid vehicle, comprising a frame 1, the single joint four-wheel old person walking aid vehicle mainly comprises a frame 1, a handrail 2, a first universal wheel 3, a first connecting column 4 and a second connecting column 5, the number of the frame 1 is two, the upper side of the two frames 1 is provided with the handrail 2, the handrail 2 on the upper side of the frame 1 is convenient for the old people to grasp, and the stability during movement is ensured, the side close to the two frames 1 is fixedly connected with the first connecting column 4, the first connecting column 4 connects the two frames 1 together to form a whole, the two sides of the two frames 1 are fixedly connected with the second connecting column 5 respectively, the second connecting column 5 improves the strength of the frame 1, the two frames 1 provide a basic support frame for the whole walking aid vehicle, the lower side of the two frames 1 is installed with the first universal wheel 3, the first universal wheel 3 gives the walking aid vehicle flexible steering ability, so that the old people can control in various environments more easily, the single joint four-wheel old person walking aid vehicle also comprises an adjusting mechanism 6, a safety mechanism 7 and an auxiliary mechanism 8, the adjusting mechanism 6 is arranged outside the frame 1, the safety mechanism 7 is arranged inside the adjusting mechanism 6, and the auxiliary mechanism 8 is arranged on the side of the frame 1, wherein the position of the handrail 2 is quickly adjusted through the adjusting mechanism 6, the adjusting mechanism 6 is limited through the safety mechanism 7, and the whole walking aid vehicle is supported through the auxiliary mechanism 8.

[0025] In the specific implementation process, it is worth pointing out that the single joint four-wheel old person walking aid vehicle mainly comprises a frame 1, a handrail 2, a first universal wheel 3, a first connecting column 4 and a second connecting column 5, the first connecting column 4 connects the two frames 1 together to form a whole, the second connecting column 5 improves the strength of the frame 1, the two frames 1 provide a basic support frame for the whole walking aid vehicle, the handrail 2 on the upper side of the frame 1 is convenient for the old people to grasp, and the stability during movement is ensured, and the first universal wheel 3 gives the walking aid vehicle flexible steering ability, so that the old people can control in various environments more easily.

[0026] Specifically, the single joint four-wheel old person walking aid vehicle mainly comprises a frame 1, a handrail 2, a first universal wheel 3, a first connecting column 4 and a second connecting column 5, the first connecting column 4 connects the two frames 1 together to form a whole, the second connecting column 5 improves the strength of the frame 1, the two frames 1 provide a basic support frame for the whole walking aid vehicle, the handrail 2 on the upper side of the frame 1 is convenient for the old people to grasp, and the stability during movement is ensured, and the first universal wheel 3 gives the walking aid vehicle flexible steering ability, so that the old people can control in various environments more easily.

[0027] Example two: by Figures 1-5It can be known that the adjusting mechanism 6 comprises a hollow column 61, a threaded column 62, a hand wheel 63, a horizontal column 64, a curved column 65, an inserting rod 66, a vertical column 67 and a moving assembly 68, the two sides of the hollow column 61 are fixedly connected to the sides of the frame 1 which are close to each other, the threaded column 62 is rotatably connected to the inner wall of the hollow column 61 through a bearing, the hand wheel 63 is fixedly connected to the bottom of the threaded column 62, when it is needed to adjust the position of the handrail 2, the operator rotates the hand wheel 63, the hand wheel 63 drives the threaded column 62 to rotate, the horizontal column 64 is screwedly connected to the outer wall of the threaded column 62, the threaded column 62 drives the horizontal column 64 to descend, the curved column 65 is two in number and is attached to the two sides of the horizontal column 64 respectively, the horizontal column 64 is away from the surfaces of the two curved columns 65, the two curved columns 65 drive the inserting rod 66 to move, the inserting rod 66 is two in number and is fixedly connected to the sides of the two curved columns 65 which are away from each other, penetrates through the hollow column 61 and movably connects with the hollow column 61, the two inserting rods 66 move in the hollow column 61, the two inserting rods 66 are away from the grooves in the interiors of the vertical columns 67, at this time, the fixation of the two vertical columns 67 is released, the operator stops rotating the hand wheel 63, the vertical column 67 is two in number, penetrates through the two frames 1, movably connects with the two frames 1, is inserted into the outer wall of the inserting rod 66 and is fixedly connected to the inner wall of the top of the handrail 2, then the operator moves the two vertical columns 67, the two vertical columns 67 move in the frame 1, the two vertical columns 67 drive the handrail 2 to move, move the handrail 2 to the appropriate position, after finishing, the operator rotates the hand wheel 63 in the opposite direction, so that the horizontal column 64 ascends, extrudes the two curved columns 65, so that the two inserting rods 66 are inserted into the corresponding grooves in the inner walls of the vertical columns 67, fix the vertical columns 67, complete the adjustment of the handrail 2, the moving assembly 68 is arranged in the interior of the hollow column 61, wherein the threaded column 62 is driven by the hand wheel 63, the curved column 65 drives the inserting rod 66 to move, the inserting rod 66 is away from the grooves in the interiors of the vertical columns 67, the handrail 2 is adjusted;

[0028] In the specific implementation process, it is particularly worth pointing out that when it is needed to adjust the position of the handrail 2, the operator rotates the hand wheel 63, the hand wheel 63 drives the threaded column 62 to rotate, the threaded column 62 drives the horizontal column 64 to descend, the horizontal column 64 is away from the surfaces of the two curved columns 65, the two curved columns 65 drive the inserting rod 66 to move, the two inserting rods 66 move in the hollow column 61, the two inserting rods 66 are away from the grooves in the interiors of the vertical columns 67, at this time, the fixation of the two vertical columns 67 is released, the operator stops rotating the hand wheel 63, then the operator moves the two vertical columns 67, the two vertical columns 67 move in the frame 1, the two vertical columns 67 drive the handrail 2 to move, move the handrail 2 to the appropriate position, after finishing, the operator rotates the hand wheel 63 in the opposite direction, so that the horizontal column 64 ascends, extrudes the two curved columns 65, so that the two inserting rods 66 are inserted into the corresponding grooves in the inner walls of the vertical columns 67, fix the vertical columns 67, complete the adjustment of the handrail 2, realize the rapid adjustment of the position of the handrail 2;

[0029] Further, the moving assembly 68 comprises a sliding block 681, connecting plates 682 and first springs 683, the sliding block 681 is fixedly connected to the outer wall of the horizontal column 64 and is slidingly connected to the inner wall of the hollow column 61; when the horizontal column 64 moves, the horizontal column 64 drives the sliding block 681 to move, the sliding block 681 slides in the limiting groove on the side wall of the hollow column 61 to guide the horizontal column 64, so that the horizontal column 64 moves stably, the connecting plates 682 are two in number and are fixedly connected to the outer wall of the inserting rod 66; when the horizontal column 64 leaves the curved columns 65 on the two sides, at this time, the first springs 683 rebound to drive the inserting rod 66 to move through the elastic force, when the horizontal column 64 extrudes the curved columns 65, so that the inserting rod 66 drives the connecting plates 682 to move, the first springs 683 are two in number and are respectively installed at the outer wall of the connecting plates 682 and the outer wall of the vehicle frame 1; the connecting plates 682 extrude the first springs 683 to make the inserting rod 66 move out of the recess in the vertical column 67, wherein the sliding block 681 moves in the hollow column 61 under the drive of the horizontal column 64, the connecting plates 682 make the first springs 683 deform under the drive of the inserting rod 66;

[0030] In the specific implementation process, it is particularly worth pointing out that when the horizontal column 64 moves, the horizontal column 64 drives the sliding block 681 to move, the sliding block 681 slides in the limiting groove on the side wall of the hollow column 61 to guide the horizontal column 64, so that the horizontal column 64 moves stably, when the horizontal column 64 leaves the curved columns 65 on the two sides, at this time, the first springs 683 rebound to drive the inserting rod 66 to move through the elastic force, when the horizontal column 64 extrudes the curved columns 65, so that the inserting rod 66 drives the connecting plates 682 to move, the connecting plates 682 extrude the first springs 683 to make the inserting rod 66 move out of the recess in the vertical column 67, so as to improve the working effect of the adjusting mechanism 6;

[0031] Further, the insurance mechanism 7 comprises sleeves 71, vertical rods 72, second springs 73 and through holes 74, the sleeves 71 are two in number and are fixedly connected to the bottom of the connecting piece 682, the vertical rods 72 are two in number and are sleeved on the inner walls of the sleeves 71, when the operator rotates the hand wheel 63, the operator inserts the external bolt into the through hole 74, the bolt drives the vertical rod 72 to move, the vertical rod 72 compresses the second spring 73, the vertical rod 72 moves in the sleeve 71, the vertical rod 72 is separated from the through hole 74, the hand wheel 63 is rotated again, when the hand wheel 63 is rotated, the bottom of the vertical rod 72 is in contact with the inner wall of the bottom of the hollow column 61 and moves on the surface thereof, the second springs 73 are two in number and are respectively installed on the inner walls of the sleeves 71 and the top of the vertical rod 72, the through holes 74 are two in number and are formed in the bottom of the hollow column 61, when the inserting rod 66 is inserted into the vertical column 67 again, the vertical rod 72 is aligned with the through hole 74, at this time, the second spring 73 rebounds, so that the vertical rod 72 moves into the through hole 74, wherein, the second spring 73 is deformed under the drive of the vertical rod 72, so that the vertical rod 72 moves in the sleeve 71 and is separated from the through hole 74;

[0032] In the specific implementation process, it is worth pointing out that, when the operator rotates the hand wheel 63, the operator inserts the external bolt into the through hole 74, the bolt drives the vertical rod 72 to move, the vertical rod 72 compresses the second spring 73, the vertical rod 72 moves in the sleeve 71, the vertical rod 72 is separated from the through hole 74, the hand wheel 63 is rotated again, when the hand wheel 63 is rotated, the bottom of the vertical rod 72 is in contact with the inner wall of the bottom of the hollow column 61 and moves on the surface thereof, when the inserting rod 66 is inserted into the vertical column 67 again, the vertical rod 72 is aligned with the through hole 74, at this time, the second spring 73 rebounds, so that the vertical rod 72 moves into the through hole 74, the adjustment mechanism 6 is limited, so that the old people do not accidentally touch the hand wheel 63 and make the hand wheel 63 rotate;

[0033] Further, the auxiliary mechanism 8 comprises hollow blocks 81, stand columns 82, screws 83, threaded holes 84 and second universal wheels 85, the number of the hollow blocks 81 is two, and each is fixedly connected to the sides of the second connecting columns 5 away from each other, the number of the stand columns 82 is two, and each is inserted into the inner wall of the hollow block 81, when some old people with poor balance sense use the walking aid, the operating personnel moves the second universal wheel 85, the second universal wheel 85 drives the stand column 82 to move, the stand column 82 is inserted into the hollow block 81, the number of the threaded holes 84 is four, and each is formed in the surface of the stand column 82, the number of the screws 83 is four, and each is screw-connected to the inner wall of the hollow block 81 and the inner wall of the threaded hole 84, after finishing, the operating personnel rotates the screw 83, the screw 83 rotates in the hollow block 81, the screw 83 is rotated into the threaded hole 84, and the stand column 82 is fixed, so that the second universal wheel 85 is installed on the frame 1, the number of the second universal wheels 85 is two, and each is installed at the bottom of the stand column 82, wherein the stand column 82 is inserted into the hollow block 81, so that the screw 83 is rotated into the threaded hole 84, and the second universal wheel 85 is installed on the frame 1, and the walking aid is supported as a whole;

[0034] In the specific implementation process, it is particularly worth pointing out that, when some old people with poor balance sense use the walking aid, the operating personnel moves the second universal wheel 85, the second universal wheel 85 drives the stand column 82 to move, the stand column 82 is inserted into the hollow block 81, after finishing, the operating personnel rotates the screw 83, the screw 83 rotates in the hollow block 81, the screw 83 is rotated into the threaded hole 84, and the stand column 82 is fixed, so that the second universal wheel 85 is installed on the frame 1, and the walking aid is supported, and the dumping effect of the walking aid is reduced;

[0035] Specifically, when the position of the handrail 2 needs to be adjusted, the staff inserts the external plug into the through hole 74, the plug drives the vertical rod 72 to move, the vertical rod 72 compresses the second spring 73, the vertical rod 72 moves in the sleeve 71, the vertical rod 72 is removed from the through hole 74, then the operator rotates the hand wheel 63, the hand wheel 63 drives the threaded column 62 to rotate, the threaded column 62 drives the horizontal column 64 to descend, the horizontal column 64 drives the sliding block 681 to move, the sliding block 681 slides in the limiting groove on the side wall of the hollow column 61, the horizontal column 64 is away from the surface of the two curved columns 65, at this time, the first spring 683 rebounds, the two curved columns 65 drive the plug rod 66 to move, the two plug rods 66 move in the hollow column 61, the two plug rods 66 are away from the recess in the vertical column 67, at this time, the fixing of the two vertical columns 67 is released, the operator stops rotating the hand wheel 63, then the operator moves the two vertical columns 67, the two vertical columns 67 move in the frame 1, the two vertical columns 67 drive the handrail 2 to move, the handrail 2 is moved to the appropriate position, after finishing, the operator rotates the hand wheel 63 in the opposite direction, so that the horizontal column 64 rises, the two curved columns 65 are pressed, the plug rod 66 drives the connecting piece 682 to move, the connecting piece 682 presses the first spring 683, so that the two plug rods 66 are inserted into the corresponding recess in the inner wall of the vertical column 67, at this time, the vertical rod 72 is re-aligned with the through hole 74, at this time, the second spring 73 rebounds, the vertical rod 72 moves into the through hole 74, the vertical column 67 is fixed, the adjustment of the handrail 2 is completed, when some old people who are not good at balancing use the walker, the operator moves the second universal wheel 85, the second universal wheel 85 drives the vertical column 82 to move, the vertical column 82 is inserted into the hollow block 81, after finishing, the operator rotates the screw 83, the screw 83 rotates in the hollow block 81, the screw 83 is rotated into the threaded hole 84, the vertical column 82 is fixed, so that the second universal wheel 85 is installed on the frame 1.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A single-joint four-wheeled mobility scooter for the elderly, comprising a frame (1), characterized in that: The vehicle has two frames (1), each with a handrail (2) on top. A first connecting post (4) is fixedly connected to the side of each frame (1) that is close to it. Second connecting posts (5) are fixedly connected to the sides of each frame (1). A first omnidirectional wheel (3) is installed under each frame (1). The single-joint four-wheeled elderly mobility aid also includes: The adjustment mechanism (6) is located on the outside of the frame (1); The insurance institution (7) is located within the adjustment institution (6); Auxiliary mechanism (8) is provided on the side of the frame (1); The position of the handrail (2) is quickly adjusted by the adjustment mechanism (6), the adjustment mechanism (6) is limited by the insurance mechanism (7), and the entire walking vehicle is supported by the auxiliary mechanism (8).

2. A single-joint four-wheeled mobility scooter for the elderly according to claim 1, characterized in that: The adjustment mechanism (6) includes: Hollow column (61), both sides are fixedly connected to the side of the frame (1) that is close to each other; The threaded column (62) is rotatably connected to the inner wall of the hollow column (61) via a bearing; The handwheel (63) is fixedly connected to the bottom of the threaded post (62); A horizontal column (64) is threaded to the outer wall of a threaded column (62); There are two curved columns (65), which are attached to both sides of the horizontal column (64); There are two insert rods (66), both of which are fixedly connected to the two curved columns (65) on opposite sides, and pass through the hollow column (61) and are movably connected to the hollow column (61); There are two vertical columns (67), each penetrating through the two frames (1) and movably connected to the two frames (1), and inserted into the outer wall of the plug rod (66), with the top fixedly connected to the inner wall of the handrail (2); A movable component (68) is disposed inside the hollow column (61); Driven by the handwheel (63), the threaded column (62) causes the curved column (65) to move the insert rod (66), so that the insert rod (66) leaves the groove inside the vertical column (67) and adjusts the handrail (2).

3. A single-joint four-wheeled mobility scooter for the elderly according to claim 2, characterized in that: The mobile component (68) includes: The slider (681) is fixedly connected to the outer wall of the horizontal column (64), and the outer wall is slidably engaged with the inner wall of the hollow column (61); There are two connecting pieces (682), both of which are fixedly connected to the outer wall of the plug rod (66); The first spring (683) consists of two springs, with its two ends respectively mounted on the outer wall of the connecting piece (682) and the outer wall of the frame (1); The slider (681) moves in the hollow column (61) under the drive of the horizontal column (64), and the connecting piece (682) causes the first spring (683) to deform under the drive of the insert rod (66).

4. A single-joint four-wheeled mobility scooter for the elderly according to claim 1, characterized in that: Insurance institutions (7) include: There are two sleeves (71), both of which are fixedly connected to the bottom of the connecting piece (682); There are two upright poles (72), and both are fitted onto the inner wall of the sleeve (71); The second spring (73) consists of two springs, with its two ends respectively installed on the inner wall of the sleeve (71) and the top of the upright (72); There are two through holes (74), both of which are located at the bottom of the hollow column (61); The second spring (73) deforms under the drive of the upright (72), thereby causing the upright (72) to move in the sleeve (71) and leave the through hole (74).

5. A single-joint four-wheeled mobility scooter for the elderly according to claim 1, characterized in that: The auxiliary mechanism (8) includes: Hollow blocks (81), two in number, are fixedly connected to the opposite side of the second connecting post (5); There are two columns (82), each inserted into the inner wall of two hollow blocks (81); There are four threaded holes (84), all of which are opened on the surface of the column (82); Screws (83), four in number, are threadedly connected to the inner wall of the hollow block (81) and the inner wall of the threaded hole (84), respectively; There are two second casters (85), both of which are installed at the bottom of the two columns (82); The column (82) is inserted into the hollow block (81), and the screw (83) is rotated into the threaded hole (84). The second universal wheel (85) is installed on the frame (1) to support the entire walking vehicle.

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