Wheel type folding walking aid

Abstract

The utility model relates to the technical field of walking aids, in particular to a wheel type folding walking aid which comprises a folding frame, a handle, a front wheel, a left rear wheel and a right rear wheel. The folding frame comprises left and right upright posts, left and right upright post sliding sleeves and a front wheel connecting rod group; shear fork folding mechanisms are arranged among the left stand column, the left stand column sliding sleeve and the right stand column, among the right stand column sliding sleeve, among the left stand column, the left stand column sliding sleeve and the front wheel connecting rod group, among the right stand column, the right stand column sliding sleeve and the front wheel connecting rod group, among the left stand column, the left stand column sliding sleeve and the left rear wheel, and among the right stand column, the right stand column sliding sleeve and the right rear wheel; locking mechanisms are further arranged between the left stand column and the right stand column and the left stand column sliding sleeve and the right stand column sliding sleeve. The folding and unfolding device is reasonable in structure, convenient to fold and unfold, high in structural stability after being unfolded, stable in walking, small in size after being folded, small in occupied space, in an upright state, stable in placement and free of toppling over, secondary folding or independent disassembly of part of parts is not needed during folding, and great convenience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of walkers, in particular to a wheeled folding walker. Background Art

[0002] Wheeled walkers provide assistance and convenience for people with limited mobility during rehabilitation, travel and exercise. Existing wheeled walkers are mainly divided into two categories in terms of structure: the first category is wheeled walkers with fixed structures. This type of walker appeared relatively early, and the overall structural frame cannot be folded, occupying a large space, and is now rare; the second category is foldable wheeled walkers, which can support the body and assist the user in moving and walking after unfolding, and become smaller in size for easy storage after folding.

[0003] At present, although some wheeled walkers are designed with folding functions, there are still some problems, such as the volume is still large after folding, occupying a lot of space, and being unable to stand upright stably after folding.

[0004] The Chinese patent with publication number CN 110236893 A discloses a four-wheeled walker, whose structure can be folded and unfolded synchronously in the longitudinal and transverse directions, but the disadvantage is that there is no truss structure between the rod groups, and the structural stability of the system after unfolding is weak. Specifically, the plane formed by the two connecting rods and the plane where the two groups of first support rods, second support rods and first support rods are symmetrically distributed on the left and right are perpendicular to each other. This structure needs to strengthen the connection stiffness of the two connecting rods and the direct structure with the two first support rods, otherwise it is easy to "sway" left and right, and the structure is unstable.

[0005] Chinese patent with publication number CN 114631985 A discloses a foldable three-wheeled walker, and Chinese patent with publication number CN202386871 discloses a three-wheeled walker. The walkers disclosed in these two patents are common three-wheeled walkers on the market. The main structure is that a rotating shaft is set at the front wheel. The folding frame of the walker uses the rotating shaft as the rotation center and can only be folded around the shaft. The volume after folding is relatively large, and the handle after unfolding is not parallel to the forward direction, that is, the handle is tilted outward when in use, which is inconvenient to use. Utility Model Content

[0006] The problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a wheeled folding walker.

[0007] A wheeled foldable walker, comprising a foldable frame, the foldable frame being provided with a handle, a front wheel and two rear wheels arranged on the left and right sides, the foldable frame comprising a left column sliding sleeve, a right column sliding sleeve and a front wheel connecting rod group, the left column sliding sleeve being provided with a left column, and the right column sliding sleeve being provided with a right column;

[0008] A first scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column, the bottom end of the right column sliding sleeve, and the bottom end of the right column;

[0009] A second scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column and the front wheel connecting rod group;

[0010] A third scissor folding mechanism is provided between the bottom end of the right column sliding sleeve, the bottom end of the right column and the front wheel connecting rod group;

[0011] A fourth scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column and the left rear wheel;

[0012] A fifth scissor folding mechanism is provided between the bottom end of the right column sliding sleeve, the bottom end of the right column and the right rear wheel;

[0013] A locking mechanism for controlling the folding states of the first scissors-fork folding mechanism, the second scissors-fork folding mechanism, the third scissors-fork folding mechanism, the fourth scissors-fork folding mechanism and the fifth scissors-fork folding mechanism is provided between the top end of the left column sliding sleeve and the top end of the right column sliding sleeve.

[0014] Furthermore, the front wheel connecting rod group includes an inverted front wheel mounting piece which is rotatably connected to the front wheel, a vertical rod is provided at the top of the front wheel mounting piece, a blocking piece is provided on the vertical rod, a first lower sliding sleeve and a second lower sliding sleeve which are arranged vertically are sleeved on the vertical rod between the blocking piece and the front wheel mounting piece, a guide sleeve is sleeved on the vertical rod above the blocking piece, a guide sleeve head is threadedly connected to the outer side of the top end of the guide sleeve, a support piece is provided on the outer side of the guide sleeve, a first upper sliding sleeve and a second upper sliding sleeve which are arranged vertically are provided on the guide sleeve between the guide sleeve head and the support piece, the front wheel realizes a universal wheel effect through the rotation of the vertical rod in the guide sleeve, and the vertical rod can realize up and down movement in the guide sleeve while maintaining a vertical state.

[0015] Furthermore, the first scissors-type folding mechanism includes a first rod body and a second rod body that are crossed and hinged, one end of the first rod body is hinged to the top end of the left column sliding sleeve, and the other end is hinged to the bottom end of the right column, and one end of the second rod body is hinged to the top end of the right column sliding sleeve, and the other end is hinged to the bottom end of the left column.

[0016] Furthermore, the second scissors-type folding mechanism includes a first left connecting rod and a second left connecting rod that are crossed and hinged, wherein one end of the first left connecting rod is hinged to the top end of the left column sliding sleeve, and the other end is hinged to the first lower sliding sleeve, and one end of the second left connecting rod is hinged to the left column, and the other end is hinged to the first upper sliding sleeve.

[0017] Furthermore, the third scissors-type folding mechanism includes a first right connecting rod and a second right connecting rod that are crossed and hinged, one end of the first right connecting rod is hinged to the top end of the right column sliding sleeve, and the other end is hinged to the second lower sliding sleeve, one end of the second right connecting rod is hinged to the left column, and the other end is hinged to the second upper sliding sleeve.

[0018] Furthermore, the fourth scissor-type folding mechanism and the fifth scissor-type folding mechanism each include a first connecting rod and a second connecting rod, wherein one end of the first connecting rod on the left side is hinged to the bottom end of the left column sliding sleeve, and the other end is rotatably connected to the left rear wheel, and the second connecting rod on the left side is hinged to the first connecting rod on the left side, and the other end is hinged to the bottom end of the left column;

[0019] One end of the first connecting rod on the right side is hinged to the bottom end of the right column sliding sleeve, and the other end is rotatably connected to the right rear wheel. The second connecting rod on the right side is hinged to the first connecting rod on the right side, and the other end is hinged to the bottom end of the right column.

[0020] Furthermore, the locking mechanism includes a first locking rod and a second locking rod, one end of the first locking rod is hinged to the left column sliding sleeve, one end of the second locking rod is hinged to the right column sliding sleeve, and the first locking rod and the second locking rod are hinged and provided with a locking piece.

[0021] Furthermore, the lock comprises a first hinged plate connected to the first locking rod, and a second hinged plate connected to the second locking rod, the top end of the first hinged plate is hinged to the top end of the second hinged plate, the bottom end of the first hinged plate is provided with a lock hole, the bottom end of the second hinged plate is provided with a lock cylinder, a movable lock core is provided in the lock cylinder, the second hinged plate is connected to a lock core operating member through a torsion spring at one end away from the second locking rod, a lock slot is provided at one end of the lock core, a paddle buckled on the lock slot is provided at the bottom end of the lock core operating member, and a pull member is connected to the lock core operating member.

[0022] Furthermore, a limiting ring is provided at the bottom end of the left column located below the left column sliding sleeve, and a limiting ring is provided at the bottom end of the right column located below the right column sliding sleeve. The two limiting rings are respectively mounted on the left column and the right column and fastened by screws. Each limiting ring is provided with a clearance notch.

[0023] Furthermore, a handle is provided at the top of the left column and the top of the right column, and a height adjustment device is provided between the top of the left column and the corresponding handle and between the top of the right column and the corresponding handle;

[0024] The height adjustment device includes an outer sleeve and an inner rod body that can be inserted into the outer sleeve, the top end of the inner rod body is connected to the handle, and the bottom ends of the two outer sleeves are respectively connected to the left column and the right column. The outer sleeve is provided with a plurality of through holes, and the bottom end of the inner rod body is provided with an elastic locking piece, which can be buckled into the through holes. The elastic locking piece is an elastic telescopic piece, which passes through the through holes of the outer sleeve and can be exchanged between the through holes to achieve height adjustment of the handle.

[0025] Furthermore, the number of the front wheels is 1 or 2.

[0026] The advantages of the utility model are as follows: the utility model has a reasonable structure, is easy to fold and unfold, has a strong structural stability after unfolding, is stable when walking, has a small volume after folding, occupies less space, is in an upright state, is stable when placed and will not fall over, does not require secondary folding or separate disassembly of some parts when folding, and brings great convenience to users;

[0027] To unfold the walker, you only need to push the handle outwards, then unfold the locking mechanism to a horizontal state and lock it to complete the unfolding operation; to fold the walker, you first open the locking mechanism, then pull or press the locking mechanism down, and then press the handle inwards to complete the folding operation. It is easy to operate.

[0028] Compared with similar three-wheeled walkers, this walker can be folded in both the forward and lateral directions, which greatly reduces the volume after folding and occupies much less space.

[0029] After folding, the walker can remain upright autonomously without leaning against a wall or other objects;

[0030] The folding frame is optimized in design. The walker can stand upright at any unfolding or folding position, making it easy to place and store the walker.

[0031] The folding frame has a stable structure. The first scissor-type folding mechanism and the locking mechanism between the left and right columns are unfolded, the second scissor-type folding mechanism between the left column and the front wheel connecting rod group is unfolded, and the third scissor-type folding mechanism between the right column and the front wheel connecting rod group is unfolded to form a stable triangle shape. After unfolding, the structure is stable and not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a three-wheeled walker of a wheeled folding walker of the utility model;

[0033] Figure 2 This is a schematic diagram of a first scissor-type folding mechanism of a wheeled folding walker of the utility model;

[0034] Figure 3This is a schematic diagram of a second scissor-type folding mechanism of a wheeled folding walker of the utility model;

[0035] Figure 4 This is a schematic diagram of the third scissor-type folding mechanism of a wheeled folding walker of the utility model;

[0036] Figure 5 This is a schematic diagram of the fourth and fifth scissor-fork folding mechanisms of a wheeled folding walker of the utility model;

[0037] Figure 6 It is a schematic diagram of a locking mechanism of a wheeled folding walker of the utility model;

[0038] Figure 7 It is a schematic diagram of a locking member of a locking mechanism of a wheeled folding walker of the utility model;

[0039] Figure 8 It is a three-dimensional schematic diagram of a front wheel connecting rod assembly of a wheeled folding walker of the utility model;

[0040] Fig. 9 It is a cross-sectional schematic diagram of a front wheel connecting rod assembly of a wheeled folding walker of the utility model;

[0041] Fig.10 It is a schematic diagram of an upper limit ring of a column of a wheeled folding walker of the utility model;

[0042] Fig.11 It is a schematic diagram of the height adjustment structure of the handle of a wheeled folding walker of the utility model;

[0043] Fig.12 It is a schematic diagram of the structure of a four-wheeled walker of a wheeled folding walker of the utility model;

[0044] Fig.13 yes Figure 1 Schematic diagram of the folding of the medium three-wheeled walker;

[0045] Fig.14 yes Fig.12 Schematic diagram of the folding of the medium four-wheeled walker.

[0046] As shown in the figure: 1. First scissor fork folding mechanism; 2. Second scissor fork folding mechanism; 3. Third scissor fork folding mechanism; 4. Fourth scissor fork folding mechanism; 5. Fifth scissor fork folding mechanism; 6. Locking mechanism; 7. Left column sliding sleeve; 8. Right column sliding sleeve; 9. Front wheel connecting rod group; 10. Left column; 11. Right column; 12. Limiting ring; 13. Handle; 14. Front wheel; 15. Rear wheel; 16. Outer sleeve; 17. Inner rod body; 18. Through hole; 19. Elastic locking piece; 101. First rod body; 102. Second rod body; 201. First left connecting rod; 202. Second left connecting rod; 301. First right connecting rod; 302. Second right connecting rod; 401, first connecting rod; 402, second connecting rod; 601, first locking rod; 602, second locking rod; 603, first hinge plate; 604, second hinge plate; 605, lock hole; 606, pull piece; 607, lock cylinder; 608, lock core; 609, torsion spring; 610, lock core operating member; 611, lock groove; 612, paddle; 901, front wheel mounting member; 902, vertical rod; 903, blocking member; 904, first lower deflection sliding sleeve; 905, second lower deflection sliding sleeve; 906, guide sleeve; 907, guide sleeve head; 908, support member; 909, first upper deflection sliding sleeve; 910, second lower deflection sliding sleeve; 1201, clearance gap. DETAILED DESCRIPTION

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0050] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0051] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0052] like Figure 1 As shown, a wheeled folding walker comprises a folding frame, the folding frame is provided with a handle 13, a front wheel 14 and two rear wheels 15 arranged on the left and right sides, the folding frame comprises a left column sliding sleeve 7, a right column sliding sleeve 8 and a front wheel connecting rod group 9, a left column 10 is arranged in the left column sliding sleeve 7, a right column 11 is arranged in the right column sliding sleeve 8, the bottom end of the left column 10 is located below the left column sliding sleeve 7, and the bottom end of the right column 11 is located below the right column sliding sleeve 8, and both are provided with a limiting ring 12;

[0053] A first scissor-type folding mechanism 1 is provided between the bottom end of the left column sliding sleeve 7, the bottom end of the left column 10 and the bottom end of the right column sliding sleeve 8, the bottom end of the right column 11;

[0054] A second scissor-fork folding mechanism 2 is provided between the bottom end of the left column sliding sleeve 7, the bottom end of the left column 10 and the front wheel connecting rod group 9;

[0055] A third scissor folding mechanism 3 is provided between the bottom end of the right column sliding sleeve 8, the bottom end of the right column 11 and the front wheel connecting rod group 9;

[0056] A fourth scissor-type folding mechanism 4 is provided between the bottom end of the left column sliding sleeve 7, the bottom end of the left column 10 and the left rear wheel 15;

[0057] A fifth scissor folding mechanism 5 is provided between the bottom end of the right column sliding sleeve 8, the bottom end of the right column 11 and the right rear wheel 15;

[0058] A locking mechanism 6 for controlling the folding states of the first scissors-fork folding mechanism 1, the second scissors-fork folding mechanism 2, the third scissors-fork folding mechanism 3, the fourth scissors-fork folding mechanism 4 and the fifth scissors-fork folding mechanism 5 is provided between the top end of the left column sliding sleeve 7 and the top end of the right column sliding sleeve 8.

[0059] like Figure 8 and Fig. 9As shown, the front wheel connecting rod group 9 includes an inverted front wheel mounting member 901 which is rotatably connected to the front wheel 14, a vertical rod 902 is provided at the top of the front wheel mounting member 901, a blocking member 903 is provided on the vertical rod 902, a first lower deflection sleeve 904 and a second lower deflection sleeve 905 which are arranged up and down on the vertical rod 902 and located between the blocking member 903 and the front wheel mounting member 901, the vertical rod 902 is provided with a guide sleeve 906 located above the blocking member 903, and a guide sleeve head 907 is connected to the outer side of the top end of the guide sleeve 906 through a thread A support member 908 is provided on the outside of the guide sleeve 906, and a first upper sliding sleeve 909 and a second lower sliding sleeve 910 are provided on the guide sleeve 906 between the guide sleeve head 907 and the support member 908. The front wheel 14 realizes a universal wheel effect by rotating the vertical rod 902 in the guide sleeve 906, and the guide sleeve 906 can maintain the vertical device on the vertical rod 902 and move up and down to meet the position change requirements of the second scissors folding mechanism 2 and the third scissors folding mechanism 3 when folding or unfolding and the connection with the front wheel connecting rod group 9.

[0060] like Figure 2 As shown, the first scissors-type folding mechanism includes a crossed and hinged first rod body 101 and a second rod body 102, one end of the first rod body 101 is hinged to the top end of the left column sliding sleeve 7, and the other end is hinged to the bottom end of the right column 11, one end of the second rod body 102 is hinged to the top end of the right column sliding sleeve 8, and the other end is hinged to the bottom end of the left column 10.

[0061] like Figure 3 As shown, the second scissors-type folding mechanism 2 includes a crossed and hinged first left link 201 and a second left link 202, wherein one end of the first left link 201 is hinged to the top end of the left column sliding sleeve 7, and the other end is hinged to the first lower sliding sleeve 904, and one end of the second left link 202 is hinged to the left column 10, and the other end is hinged to the first upper sliding sleeve 909.

[0062] like Figure 4 As shown, the third scissors-type folding mechanism 3 includes a crossed and hinged first right link 301 and a second right link 302, wherein one end of the first right link 301 is hinged to the top end of the right column sliding sleeve 8, and the other end is hinged to the second lower sliding sleeve 905, and one end of the second right link 302 is hinged to the right column 11, and the other end is hinged to the second upper sliding sleeve 910.

[0063] like Figure 5 As shown, the fourth scissor-type folding mechanism 4 and the fifth scissor-type folding mechanism 5 both include a first connecting rod 401 and a second connecting rod 402. One end of the first connecting rod 401 on the left side is hinged to the bottom end of the left column sliding sleeve 7, and the other end is rotatably connected to the left rear wheel 15. The second connecting rod 402 on the left side is hinged to the first connecting rod 401 on the left side, and the other end is hinged to the bottom end of the left column 10.

[0064] One end of the first connecting rod 401 on the right side is hinged to the bottom end of the right column sliding sleeve 8, and the other end is rotatably connected to the right rear wheel 15. The second connecting rod 402 on the right side is hinged to the first connecting rod 401 on the right side, and the other end is hinged to the bottom end of the right column 11.

[0065] The first scissors-fork folding mechanism 1, the second scissors-fork folding mechanism 2, the third scissors-fork folding mechanism 3, the fourth scissors-fork folding mechanism 4, and the fifth scissors-fork folding mechanism 5 are folded and unfolded following the changes of the left and right column sliding sleeves on the left and right columns, and the two handles 13 are moved toward and opened in the middle, and the front wheels and rear wheels are moved toward and opened.

[0066] like Figure 6 As shown, the locking mechanism 6 includes a first locking rod 601 and a second locking rod 602. One end of the first locking rod 601 is hinged to the left column sliding sleeve 7, and one end of the second locking rod 602 is hinged to the right column sliding sleeve 8. The first locking rod 601 and the second locking rod 602 are hinged, as shown in FIG. Figure 7 As shown, the lock comprises a first hinge plate 603 connected to a first locking rod 601, and a second hinge plate 604 connected to a second locking rod 602. The top of the first hinge plate 603 is hinged to the top of the second hinge plate 604. The bottom of the first hinge plate 603 is provided with a lock hole 605. The bottom of the second hinge plate 604 is provided with a lock cylinder 607. A movable lock cylinder 608 is provided in the lock cylinder 607. The end of the second hinge plate 604 away from the second locking rod 602 is connected to a lock cylinder operating member 610 through a torsion spring 609. A lock groove 611 is provided at one end of the lock cylinder 608. A paddle 612 buckled on the lock groove 611 is provided at the bottom of the lock cylinder operating member 610. The lock cylinder operating member 610 is connected to a pull member 606.

[0067] When the locking mechanism 6 is in use, when the first locking rod 601 and the second locking rod 602 are in the folded state, the lock core 608 on the second hinge plate 604 is disengaged from the lock hole 605 at the bottom end of the first hinge plate 603, and the first locking rod 601 and the second locking rod 602 are in the hinged folded state; when the first locking rod 601 and the second locking rod 602 are in the horizontally unfolded state, the lock core 608 is inserted into the lock hole 605 and is in a locked state, and the first locking rod 601 and the second locking rod 602 cannot be folded; when folding is required, the pull piece 606 is manually pulled, that is, the paddle 612 at the bottom end of the lock core operating piece 610 is pulled, and the paddle 612 paddles the lock core 608 out of the lock hole 605, that is, the unlocking is completed, and the first locking rod 601 and the second locking rod 602 can be folded;

[0068] The structure of the aforementioned locking mechanism 6 is only a locking mechanism for realizing the articulated first locking rod 601 and the second locking rod 602 when they are in the unfolded horizontal state. Other mechanisms that can realize the locking of the first locking rod 601 and the second locking rod 602 when they are in the unfolded horizontal state may also be used.

[0069] like Fig.10 As shown, the two limiting rings 12 are respectively mounted on the left column 10 and the right column 11 and fastened by screws. Each limiting ring 12 is provided with a clearance notch 1201 to facilitate the installation and adjustment of the limiting ring. For example, the hinge point between the column and other components can pass through the clearance notch 1201.

[0070] A handle 13 is disposed at the top of the left column 10 and the top of the right column 11, and a height adjustment device is disposed between the top of the left column 10 and the corresponding handle 13 and between the top of the right column 11 and the corresponding handle 13. Fig.11 As shown in the figure, the height adjustment device includes an outer sleeve 16 and an inner rod body 17 that can be inserted into the outer sleeve 16, the top end of the inner rod body 17 is connected to the handle 13, and the bottom ends of the two outer sleeves 16 are respectively connected to the left column 10 and the right column 11, and the outer sleeve 16 is provided with a plurality of through holes 18. The bottom end of the inner rod body 17 is provided with an elastic locking piece 19, and the elastic locking piece 19 can be buckled into the through holes 18. The elastic locking piece 19 is an elastic telescopic piece. The elastic locking piece 19 passes through the through holes 18 of the outer sleeve 16, and the height adjustment of the handle 13 is achieved by exchanging positions between the through holes 18. The elastic locking piece 19 can be provided with a spring sheet in the inner rod body 17 to achieve the entry and exit of the elastic locking piece 19. The height adjustment of the handle 13 is convenient for people of different heights to use.

[0071] When the utility model is implemented, the number of front wheels can be set as needed, such as 1 front wheel, Figure 1 As shown, the two front wheels are Fig.12 As shown, whether it is one front wheel or two front wheels, they can be folded and placed vertically, such as Fig.13 As shown, the folding effect of the three-wheeled walker is as follows: Fig.14 As shown, the folding effect of the two front wheels.

[0072] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A wheeled foldable walker, comprising a folding frame, a handle, a front wheel and two rear wheels arranged on the left and right, characterized in that: The folding frame comprises a left column sliding sleeve, a right column sliding sleeve and a front wheel connecting rod group, wherein the left column sliding sleeve is provided with a left column, and the right column sliding sleeve is provided with a right column; A first scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column, the bottom end of the right column sliding sleeve, and the bottom end of the right column; A second scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column and the front wheel connecting rod group; A third scissor folding mechanism is provided between the bottom end of the right column sliding sleeve, the bottom end of the right column and the front wheel connecting rod group; A fourth scissor-fork folding mechanism is provided between the bottom end of the left column sliding sleeve, the bottom end of the left column and the left rear wheel; A fifth scissor folding mechanism is provided between the bottom end of the right column sliding sleeve, the bottom end of the right column and the right rear wheel; A locking mechanism for controlling the folding states of the first scissors-fork folding mechanism, the second scissors-fork folding mechanism, the third scissors-fork folding mechanism, the fourth scissors-fork folding mechanism and the fifth scissors-fork folding mechanism is provided between the top end of the left column sliding sleeve and the top end of the right column sliding sleeve.

2. A wheeled foldable walker according to claim 1, characterized in that: The front wheel connecting rod group includes a front wheel mounting piece connected to the front wheel for rotation, a vertical rod is provided at the top of the front wheel mounting piece, a blocking piece is provided on the vertical rod, a first lower sliding sleeve and a second lower sliding sleeve are provided on the vertical rod between the blocking piece and the front wheel mounting piece, a guide sleeve is provided on the vertical rod above the blocking piece, a guide sleeve head is threadedly connected to the outer side of the top end of the guide sleeve, a support piece is provided on the outer side of the guide sleeve, a first upper sliding sleeve and a second upper sliding sleeve are provided on the guide sleeve between the guide sleeve head and the support piece, the front wheel realizes a universal wheel effect through the rotation of the vertical rod in the guide sleeve, and the vertical rod can realize up and down movement in the guide sleeve while maintaining a vertical state.

3. The wheeled foldable walker according to claim 1, characterized in that: The first scissors-type folding mechanism includes a first rod body and a second rod body that are crossed and hinged, one end of the first rod body is hinged to the top end of the left column sliding sleeve, and the other end is hinged to the bottom end of the right column, one end of the second rod body is hinged to the top end of the right column sliding sleeve, and the other end is hinged to the bottom end of the left column.

4. The wheeled foldable walker according to claim 2, characterized in that: The second scissors-type folding mechanism includes a first left connecting rod and a second left connecting rod that are crossed and hinged, wherein one end of the first left connecting rod is hinged to the top end of the left column sliding sleeve, and the other end is hinged to the first lower sliding sleeve, and one end of the second left connecting rod is hinged to the left column, and the other end is hinged to the first upper sliding sleeve.

5. The wheeled foldable walker according to claim 2, characterized in that: The third scissors-type folding mechanism includes a first right connecting rod and a second right connecting rod that are crossed and hinged, wherein one end of the first right connecting rod is hinged to the top end of the right column sliding sleeve, and the other end is hinged to the second lower sliding sleeve, and one end of the second right connecting rod is hinged to the left column, and the other end is hinged to the second upper sliding sleeve.

6. The wheeled foldable walker according to claim 1, characterized in that: The fourth scissor-fork folding mechanism and the fifth scissor-fork folding mechanism both include a first connecting rod and a second connecting rod, wherein one end of the first connecting rod on the left side is hinged to the bottom end of the left column sliding sleeve, and the other end is rotatably connected to the left rear wheel, and the second connecting rod on the left side is hinged to the first connecting rod on the left side, and the other end is hinged to the bottom end of the left column; One end of the first connecting rod on the right side is hinged to the bottom end of the right column sliding sleeve, and the other end is rotatably connected to the right rear wheel. The second connecting rod on the right side is hinged to the first connecting rod on the right side, and the other end is hinged to the bottom end of the right column.

7. The wheeled foldable walker according to claim 1, characterized in that: The locking mechanism comprises a first locking rod and a second locking rod, one end of the first locking rod is hinged to the left column sliding sleeve, one end of the second locking rod is hinged to the right column sliding sleeve, and the first locking rod and the second locking rod are hinged and provided with a locking piece.

8. The wheeled foldable walker according to claim 7, characterized in that: The lock component includes a first hinge plate connected to the first locking rod, and a second hinge plate connected to the second locking rod. The top end of the first hinge plate is hinged to the top end of the second hinge plate. The bottom end of the first hinge plate is provided with a lock hole, and the bottom end of the second hinge plate is provided with a lock cylinder. A movable lock core is provided in the lock cylinder. The second hinge plate is connected to a lock core operating member at one end away from the second locking rod through a torsion spring. A lock groove is provided at one end of the lock core. A paddle buckled on the lock groove is provided at the bottom end of the lock core operating member, and a pull member is connected to the lock core operating member.

9. The wheeled foldable walker according to claim 1, characterized in that: The bottom end of the left column is located below the left column sliding sleeve, and the bottom end of the right column is located below the right column sliding sleeve. Both are provided with a limiting ring. The two limiting rings are respectively mounted on the left column and the right column and fastened by screws. Each limiting ring is provided with a clearance notch.

10. The wheeled foldable walker according to claim 1, characterized in that: A handle is provided at the top of the left column and the top of the right column, and a height adjustment device is provided between the top of the left column and the corresponding handle and between the top of the right column and the corresponding handle; The height adjustment device includes an outer sleeve and an inner rod body that can be inserted into the outer sleeve, the top end of the inner rod body is connected to the handle, and the bottom ends of the two outer sleeves are respectively connected to the left column and the right column. The outer sleeve is provided with a plurality of through holes, and the bottom end of the inner rod body is provided with an elastic locking piece, which can be buckled into the through holes. The elastic locking piece is an elastic telescopic piece, which passes through the through holes of the outer sleeve and can be exchanged between the through holes to achieve height adjustment of the handle.

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