CN213190987U

CN213190987U - Walking aid

Info

Publication number: CN213190987U
Application number: CN202021961332.3U
Authority: CN
Inventors: 杨磊
Original assignee: Nanjing Kangni Intelligent Technology Co ltd
Current assignee: Nanjing Kangni Intelligent Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-14
Anticipated expiration: 2030-09-09

Abstract

The utility model provides a walking aid, which comprises side supports respectively arranged at the left side and the right side of the walking aid, a transverse connecting rod for connecting the two side supports, and a locking mechanism, wherein the side supports comprise a front supporting rod with a front wheel at the bottom, a rear supporting rod with a rear wheel at the bottom, a back supporting rod which can be connected with the back supporting rod in a sliding way along the extending direction of the rear supporting rod, a seat rod with two ends respectively rotatably connected with the front supporting rod and the back supporting rod, and a push handle rod rotatably connected with the front supporting rod, the two ends of the transverse connecting rod are respectively rotatably connected with the back supporting rod and the rear supporting rod, when in use, the walking aid is locked in an unfolded state through the locking mechanism, a user can hold the push handle rod to assist walking, can also turn to rest on the seat rod, when not in use, the locking mechanism is unlocked, the push handle rod and the back supporting rod are pushed downwards, the rear supporting rod and the front supporting rod are driven to be drawn close up through the rotation of, the walking aid is changed to a folded state, the structure is simple, and the use is convenient.

Description

Walking aid

Technical Field

The utility model relates to the field of rehabilitation instruments, medical instruments and the field of helping the disabled and the old, in particular to a walking aid.

Background

The walking aid is an appliance for assisting a human body to support weight, keep balance and assist walking, and can enable old people or patients with inconvenient legs and feet to walk out like normal people, the existing walking aid is mostly of a four-corner two-wheel structure, for example, Chinese patent CN 210408951U discloses a walking aid for medical rehabilitation nursing, the walking aid comprises two inverted U-shaped pipe racks, connecting rods fixed between the two pipe racks and walking wheels arranged at the bottoms of the two pipe racks, but the walking aid of the scheme cannot be folded when not used, the occupied space is large, when the walking aid is used, the walking aid does not have the function of providing a rest for a user, and the walking aid is single in function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's shortcoming, providing a simple structure, convenient to use's help capable ware, should help capable ware when not using, can fold, and folding back occupation space is little, should help capable ware when using, possesses the function that provides just sitting and having a rest for the user.

In order to achieve the above object, the utility model provides a technical scheme is, help capable ware, have expansion state and fold condition, include:

the two side supports are respectively positioned at the left side and the right side of the walking aid;

the transverse connecting rod is used for connecting the two side brackets;

a locking mechanism for locking the walker in a deployed state;

the side support comprises a front support rod, a rear support rod, a backrest rod, a seat rod and a push handle rod;

the bottom of the front supporting rod is provided with a rotatable front wheel;

the bottom of the rear supporting rod is provided with a rotatable rear wheel, and the upper end part of the rear supporting rod is rotatably connected with the upper end part of the front supporting rod;

the lower end part of the backrest rod is connected to the rear support rod in a sliding manner, and the backrest rod can slide relative to the rear support rod along the extending direction of the rear support rod;

the front end part of the seat rod is rotationally connected with the middle part of the front supporting rod, and the rear end part of the seat rod is rotationally connected with the lower end part of the backrest rod;

the lower end part of the push handle rod is rotatably connected with the upper end part of the front supporting rod;

the two end parts of the transverse connecting rod are respectively and rotationally connected with the back support rod and the rear support rod, and when the back support rod slides relative to the rear support rod, the transverse connecting rod can drive the two side supports to mutually approach or separate in the left-right direction.

Preferably, the transverse links include a first transverse link and a second transverse link, the first transverse link and the second transverse link intersect with each other and are rotatably connected at an intersection, an upper end of the first transverse link and an upper end of the second transverse link are rotatably connected to a lower end of the backrest rod, a lower end of the first transverse link and a lower end of the second transverse link are rotatably connected to an upper end of the rear support rod, or the upper end of the first transverse link and the upper end of the second transverse link are rotatably connected to an upper end of the rear support rod, and the lower end of the first transverse link and the lower end of the second transverse link are rotatably connected to a lower end of the backrest rod.

Further preferably, the first and second cross links intersect at a midpoint.

Preferably, the walking aid further comprises a seat connecting rod, the seat connecting rod comprises a first seat connecting rod and a second seat connecting rod which are rotatably connected through a first rotating shaft, two ends of the seat connecting rod are respectively rotatably connected with the seat rods on the two side brackets, a virtual plane is formed by the middle points of the first rotating shaft and the transverse connecting rod, and the two side brackets are symmetrically distributed on the left side and the right side of the plane.

Preferably, the walking aid further comprises a backrest connecting rod, the backrest connecting rod comprises a first backrest connecting rod and a second backrest connecting rod which are rotatably connected through a second rotating shaft, two end parts of the backrest connecting rod are respectively rotatably connected with the upper end parts of the backrest rods on the two side brackets, the second rotating shaft and the middle point of the transverse connecting rod form a virtual plane, and the two side brackets are symmetrically distributed on the left side and the right side of the plane.

Preferably, the lower tip of back pole is provided with the sliding sleeve, the sliding sleeve slidable ground cover is established on the back branch, the back tip of seat pole with the sliding sleeve rotates mutually and is connected.

Preferably, a connecting rod extending backwards and downwards is fixed at the upper end of the front support rod, the upper end of the connecting rod is rotatably connected with the lower end of the push handle rod, and the lower end of the connecting rod is rotatably connected with the upper end of the rear support rod.

Further preferably, the distances between the rotation axis of the front wheel and the rotation axis of the rear strut when rotating relative to the connecting rod are equal.

Further preferably, the push handle rod comprises a first push handle rod and a second push handle rod, the first push handle rod is located above the second push handle rod, the first push handle rod is slidably arranged on the second push handle rod in a penetrating mode, and a push handle extending horizontally backwards is arranged at the upper end portion of the first push handle rod.

Further preferably, a projection of the rear end of the push handle on a virtual plane formed by the rotation axis of the front wheel and the rotation axis of the rear wheel is located in front of the rotation axis of the rear wheel, and the second push handle rod is provided with a locking member for locking the first push handle rod.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

Drawings

FIG. 1 is a perspective view of the preferred embodiment of the present invention, with the walker in an expanded position.

FIG. 2 is a side elevational schematic view of FIG. 1 with the walker in a deployed condition.

FIG. 3 is a side elevational schematic view of FIG. 1, with the walker in the process of being transformed from an expanded condition to a collapsed condition.

FIG. 4 is a side elevational schematic view of FIG. 1 with the walker in a collapsed condition.

Fig. 5 is a front view of fig. 4.

Fig. 6 is a front view schematically showing the back lever and the back link in fig. 2.

Fig. 7 is a front view schematically showing the back lever and the back link in fig. 4.

Fig. 8 is a schematic front view of the seat post, seat link of fig. 2.

Fig. 9 is a schematic front view of the seat post, seat link of fig. 4.

Fig. 10 is a schematic front view of the cross-link of fig. 2.

FIG. 11 is a schematic front view of the cross-link of FIG. 4

Wherein: 10. a side bracket; 11. a front support rod; 111. a front wheel; 112. a connecting rod; 12. a rear support rod; 121. a rear wheel; 13. a back rest rod; 131. a sliding sleeve; 1311. an extension portion; 14. a seat post; 15. a handle pushing rod; 151. a first push handle rod; 152. a second push handle rod; 153. a push handle; 20. a transverse connecting rod; 21. a first transverse link; 22. a second transverse connecting rod; 30. a seat link; 31. a first seat link; 32. a second seat link; 33. a first rotating shaft; 34. a connecting rod; 40. a backrest connecting rod; 41. a first back link; 42. a second back link; 43. a second rotating shaft.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.

The upper, lower, front, back, left and right directions described in the present invention refer to the upper, lower, front, back, left and right directions in fig. 1.

As shown in figures 1-5, the present invention provides a walking aid having an expanded state and a collapsed state, the walking aid comprising: side brackets 10, a cross connecting rod 20 and a locking mechanism, wherein the side brackets 10 are two, the two side brackets 10 are respectively positioned at the left side and the right side of the walking aid, and specifically, as shown in fig. 2-4, the side stand 10 includes a front support rod 11, a rear support rod 12, a backrest rod 13, a seat rod 14 and a push handle rod 15, the bottom of the front support rod 11 is provided with a rotatable front wheel 111, the bottom of the rear support rod 12 is provided with a rotatable rear wheel 121, the upper end of the rear support rod 12 is rotatably connected with the upper end of the front support rod 11, the lower end of the backrest rod 13 is slidably connected with the rear support rod 12, the backrest rod 13 can slide relative to the rear support rod 12 along the extending direction of the rear support rod 12, the front end of the seat rod 14 is rotatably connected with the middle of the front support rod 11, the rear end of the seat rod 14 is rotatably connected with the lower end of the backrest rod 13, and the lower end of the push handle rod 15 is rotatably connected with the upper end of; the transverse link 20 is used for connecting the two side brackets 10, specifically, as shown in fig. 1, 5, and 10-11, the transverse link 20 includes a first transverse link 21 and a second transverse link 22, the first transverse link 21 and the second transverse link 22 intersect at a midpoint and are rotatably connected at the intersection, an upper end of the first transverse link 21 and an upper end of the second transverse link 22 are rotatably connected with an upper end of the rear support 12, and a lower end of the first transverse link 21 and a lower end of the second transverse link 22 are rotatably connected with a lower end of the back support 13; when the back support rod 13 slides downwards/upwards relative to the back support rod 12, the two side supports can be driven to mutually approach/separate in the left-right direction through the rotation of the transverse connecting rod 20 relative to the back support rod 13 and the back support rod 12; the locking mechanism is used for locking the walking aid in the unfolding state, specifically, the locking mechanism is used for locking the relative position of the back support rod 13 and the rear support rod 12 and also used for locking the relative position of the push handle rod 15 and the front support rod 11, and the locking mechanism can be realized by adopting the prior art, and is not described again.

In this embodiment, to simplify the design and improve the safety and stability of the back support rod 13 sliding relative to the rear support rod 12, the lower end of the back support rod 13 is provided with a sliding sleeve 131, the sliding sleeve 131 is slidably sleeved on the rear support rod 12, the sliding sleeve 131 can slide along the extending direction of the rear support rod 12, the lower end of the first transverse link 21 and the lower end of the second transverse link 22 are rotatably connected with the sliding sleeve 131, the sliding sleeve 131 has an extending portion 1311 extending backwards and upwards and perpendicular to the direction of the rear support rod 12, the lower end of the back support rod 13 is fixedly connected with the extending portion 1311, so that the back support rod 13 is parallelly closed on the rear support rod 12, and the rear end of the seat rod 14 is rotatably connected with the extending portion 1311 of the sliding sleeve 131.

In order to facilitate folding and improve the stability of the walking aid in the unfolding state, the rotation axis of the rear support rod 12 relative to the front support rod 11 is located below the rotation axis of the push handle rod 15 relative to the front support rod 11, specifically, a connecting rod 112 extending backwards and downwards is fixed at the upper end of the front support rod 11, the upper end of the connecting rod 112 is rotatably connected with the lower end of the push handle rod 15, the lower end of the connecting rod 112 is rotatably connected with the upper end of the rear support rod 12, and the included angle between the connecting rod 112 and the front support rod 11 is 75-85 degrees.

To ensure that the front wheels 111 and the rear wheels 121 are flush when the aid is in the collapsed position, the distance between the axis of rotation of the front wheels 111 and the axis of rotation of the rear wheels 121 and the axis of rotation of the rear struts 12 when they are rotated relative to the connecting struts 112 is equal.

In order to adapt to users with different heights, the push handle rod 15 can be telescopic, specifically, the push handle rod 15 comprises a first push handle rod 151 and a second push handle rod 152, the first push handle rod 151 is located above the second push handle rod 152, the first push handle rod 151 slidably penetrates through the second push handle rod 152, the upper end of the first push handle rod 151 is provided with a push handle 153 extending horizontally backwards, and of course, when the walking aid is in the unfolded state, the relative positions of the first push handle bar 151 and the second push handle bar 152 need to be locked, in this embodiment, the second push handle rod 152 is provided with a locking member for locking the first push handle rod 151, the locking member is implemented by using the prior art, which is not described herein again, in order to enhance the stability of the user during use, and ensure that the center of gravity of the user is supported on the front wheel 111 and the rear wheel 121, the projection of the rear end of the push handle 153 on the virtual plane formed by the rotation axis of the front wheel 111 and the rotation axis of the rear wheel 121 is located in front of the rotation axis of the rear wheel 121.

In this embodiment, in order to improve the comfort of the user when the user rested on the seat bar 400, the seat bar 400 is positioned in a plane parallel to a horizontal plane when the foldable walker is unfolded, the seat bars 14 of the two side brackets 10 are sleeved with a seat pocket for the convenience of sitting, the walker is further provided with a seat link 30 between the two seat bars 14, as shown in fig. 1, 5 and 8-9, the seat link 30 includes a first seat link 31 and a second seat link 32 rotatably connected by a first rotating shaft 33, the first rotating shaft 33 is positioned at the front portion of the first seat link 31 and the second seat link 32, the first seat link 31/the second seat link 32 is divided into a long end and a short end, the long end of the first seat link 31 and the second seat link 32 is rotatably connected to the rear portion of the seat bar 14, the ends of the short ends of the first and second seat links 31 and 32 are rotatably connected to the front portion of the seat bar 14 by links 34, specifically, the links 34 extend in the left-right direction, there are two links 34, the two links 34 have the same length, both end portions of one of the links 34 are rotatably connected to the end portion of the short end of the first seat link 31 and the front portion of the seat bar 14, respectively, and both end portions of the other link 34 are rotatably connected to the end portion of the short end of the second seat link 32 and the front portion of the seat bar 14, in order not to interfere with the movement of the two side brackets toward/away from each other in the left-right direction, a virtual plane is formed between the first rotating shaft 33 and the midpoints of the first and second cross links 21 and 22, the two side brackets 10 and the two links 35 are symmetrically distributed on the left and right sides of the virtual plane, and the first and second seat links 31 and 32 are mirror images of each other on the left and right sides of the virtual plane.

In this embodiment, in order to support the back of the user when the user sits on a rested seat, the walking aid further comprises a backrest connecting rod 40, as shown in fig. 1, 5 and 6-7, two ends of the backrest connecting rod 40 are respectively connected with the upper ends of the backrest rods 13 on the two side brackets 10, in order not to interfere the movement of the two side brackets 10 approaching to/separating from each other in the left-right direction, the backrest connecting rod 40 comprises a first backrest connecting rod 41 and a second backrest connecting rod 42 which are rotatably connected through a second rotating shaft 43, the second rotating shaft 43 forms a virtual plane with the middle point of the first transverse connecting rod 21 and the middle point of the second transverse connecting rod 22, and the two side brackets 10 are symmetrically distributed on the left side and the right side of the plane.

The walking aid also comprises an L-shaped connecting sheet which is arranged at the rotary connecting part of the transverse connecting rod 20, the rear supporting rod 12 and the sliding sleeve 131 and is also arranged at the rotary connecting part of the seat connecting rod 30, the connecting rod 35 and the seat rod 14, thus having the function of convenient installation.

The utility model provides a walking aid, through making the side bearer include the front strut of bottom with the front wheel, the back strut of bottom with the rear wheel, can connect with the back strut in the extending direction of back strut slidably, both ends respectively with the seat pole that front strut and back strut rotate and connect and push away the handlebar stem with the front strut looks rotation connection, make both ends of the cross-connecting rod respectively with the back strut, the back strut looks rotation connection, when using, lock the walking aid in the expansion state through the locking mechanism, the user can hold the push away the handlebar stem to assist the walking, can also turn round to sit on the seat pole and have a rest, when not using, unblock locking mechanism, push away the handlebar stem and the back strut downwards, drive the back strut through the seat pole rotation, the front strut draws close, drive the side bearer to draw close in left and right directions through the cross-connecting rod simultaneously, make the walking aid to transform to fold condition, simple structure, is convenient to use.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A walker having an expanded state and a collapsed state, comprising:

the transverse connecting rod is used for connecting the two side brackets;

a locking mechanism for locking the walker in a deployed state;

the method is characterized in that:

2. The walker of claim 1 wherein the cross-links comprise a first cross-link and a second cross-link, the first cross-link and the second cross-link intersecting and being rotatably connected at an intersection, the upper end of the first cross-link and the upper end of the second cross-link being rotatably connected to the lower end of the back-support bar, the lower end of the first cross-link and the lower end of the second cross-link being rotatably connected to the upper end of the back-support bar, or the upper end of the first cross-link and the upper end of the second cross-link being rotatably connected to the upper end of the back-support bar, the lower end of the first cross-link and the lower end of the second cross-link being rotatably connected to the lower end of the back-support bar.

3. The walker of claim 2 wherein the first and second transverse links intersect at a midpoint.

4. The walker of claim 1 further comprising a seat link, said seat link including a first seat link and a second seat link pivotally connected to each other by a first pivot, wherein said seat link is pivotally connected at opposite ends to said seat bars of said two side frames, respectively, and wherein said first pivot and said cross link define a virtual plane, and said two side frames are symmetrically disposed on left and right sides of said plane.

5. The walking aid of claim 1, further comprising a backrest connecting rod, wherein the backrest connecting rod comprises a first backrest connecting rod and a second backrest connecting rod which are rotatably connected through a second rotating shaft, two ends of the backrest connecting rod are respectively rotatably connected with the upper ends of the backrest rods on the two side brackets, the second rotating shaft and a middle point of the transverse connecting rod form a virtual plane, and the two side brackets are symmetrically distributed on the left side and the right side of the plane.

6. The walking aid of claim 1, wherein the lower end of the back support rod is provided with a sliding sleeve, the sliding sleeve is slidably sleeved on the rear support rod, and the rear end of the seat rod is rotatably connected with the sliding sleeve.

7. The walking aid of claim 1, wherein a connecting rod extending backwards and downwards is fixed to the upper end of the front strut, the upper end of the connecting rod is rotatably connected with the lower end of the push handle rod, and the lower end of the connecting rod is rotatably connected with the upper end of the rear strut.

8. The walker of claim 7 wherein the axes of rotation of the front wheels and the axes of rotation of the rear wheels are equidistant from the axis of rotation of the rear strut when rotated relative to the connecting bar.

9. The walking aid of any one of claims 1 to 8, wherein the push handle rod comprises a first push handle rod and a second push handle rod, the first push handle rod is positioned above the second push handle rod, the first push handle rod is slidably arranged on the second push handle rod in a penetrating way, and the upper end part of the first push handle rod is provided with a push handle which horizontally extends backwards.

10. The walker according to claim 9 wherein the rear end of said push handle projected on a virtual plane formed by the rotational axes of said front and rear wheels is located in front of the rotational axis of said rear wheel, and said second push handle bar is provided with a locking member for locking said first push handle bar.