CN219250725U

CN219250725U - Walking aid vehicle

Info

Publication number: CN219250725U
Application number: CN202223047525.XU
Authority: CN
Inventors: 蔡辉; 朱铁文; 魏海峰
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-06-27
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a walker, which comprises a frame, a front wheel support, a rear wheel support, a seat frame and a bottom connecting rod, wherein the front part of the seat frame is in pivot connection with the front wheel support, the upper part of the rear wheel support is in pivot connection with the rear part of the seat frame, the bottom connecting rod is positioned below the seat frame and is rotationally connected between the front wheel support and the rear wheel support, and the seat frame, the bottom connecting rod and the rear wheel support are sequentially folded at the rear side of the front wheel support when the frame is in a folded state. The frame of the walker is simple in structure in the unfolded state, can provide stable bearing support for users, and provides convenience for the travel of the users with inconvenient legs and feet; when the frame is folded, the rear wheel support rotates and folds relative to the front wheel support to drive the rear part of the seat frame to move upwards, so that the seat frame and the bottom connecting rod fold between the front wheel support and the rear wheel support.

Description

Walking aid vehicle

Technical Field

The utility model relates to a walking aid vehicle.

Background

For people with inconvenient legs and feet and limited physical strength, a plurality of inconveniences often exist in daily outgoing, and most people need to rely on a wheelchair for going out. However, most of the wheelchair products on the market are large and heavy, which is inconvenient for caregivers to push, and meanwhile, inconvenient to carry and transport, and occupies a large storage space in daily life.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a foldable walker.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a walker comprising a frame having an expanded state and a collapsed state, a front wheel assembly and a rear wheel assembly disposed at a bottom of the frame, and a locking mechanism for locking the frame in the expanded state, the frame comprising:

the front wheel support comprises two front support rods which are respectively arranged at the left side and the right side and extend obliquely upwards from front to back;

the rear wheel support comprises two rear support rods which are respectively arranged at the left side and the right side and extend obliquely upwards from back to front;

the seat frame extends along the front-back direction, the front part of the seat frame is pivotally connected with the two front support rods around a first shaft, and the upper parts of the two rear support rods are pivotally connected with the rear part of the seat frame around a second shaft;

the bottom connecting rod is provided with two bottom connecting rods which are respectively arranged at the left side and the right side, the bottom connecting rod is positioned below the seat frame, the left side and the right side of the frame are respectively provided with a bottom connecting rod, one end part of the bottom connecting rod is pivotally connected to the front supporting rod, the other end part of the bottom connecting rod is pivotally connected to the rear supporting rod,

the frame is in a folding state, and the seat frame, the bottom connecting rod and the rear wheel support are sequentially folded at the rear side of the front wheel support.

Preferably, the frame further comprises a grab bar extending in a front-rear direction and a front connecting rod extending in an up-down direction when the frame is in a unfolded state, the grab bar and the front connecting rod are respectively provided with two grab bars arranged on the left side and the right side, the grab bar is pivotally connected to the front supporting rod and is positioned above the seat frame, one end part of the front connecting rod is pivotally connected to the grab bar, and the other end part of the front connecting rod is pivotally connected to the seat frame.

In some embodiments, the upper end of the front link is pivotally connected to the grab bar about a third axis and the lower end of the front link is pivotally connected to the seat frame about a fourth axis, the third axis being co-located with the fourth axis on the front side of the front strut or on the rear side of the front strut.

In some embodiments, the front link is located at the rear side of the front strut, and the frame is in the unfolded state, the front link and the front strut are parallel to each other, and the rear part of the grab bar moves upwards during the transition of the frame from the unfolded state to the folded state, so that the grab bar and the front strut are folded together.

Preferably, the frame further comprises a back rest, the back rest extends in the up-down direction in the unfolded state, and the lower end of the back rest is pivotally connected with the rear end of the seat frame.

Preferably, the rear wheel bracket further comprises a rear cross bar arranged between the upper parts of the two rear struts and extending in the left-right direction, and the rear part of the seat frame is supported on the rear cross bar when the frame is in a unfolded state.

Preferably, the seat frame has two seat bars respectively disposed at left and right sides and extending in a front-rear direction, the seat bars are pivotally connected with the front support bar around the first shaft, the seat bars are pivotally connected with the rear support bar around the second shaft, and in the unfolded state of the frame, the bottom connecting bars are parallel to the seat bars.

Preferably, the bottom of each side front support pole all be equipped with the front wheel subassembly, each side the bottom of back support pole all be equipped with the back wheel subassembly, the frame is in under the folded condition, front support pole with back support pole is along the direction is drawn in each other around, the back wheel subassembly draw in the top of front wheel subassembly.

Preferably, the frame further comprises a push rod frame which is connected to the upper part of the front wheel bracket in a relatively sliding manner along the length extension direction of the front wheel bracket, and at least an operation handle for holding operation is arranged at the top of the push rod frame.

In some embodiments, the push rod frame is composed of two groups of push rods respectively arranged at the left side and the right side, each group of push rods comprises a push rod body extending along the up-down direction and a handle rod bending and extending backwards from the top of the push rod body, the push rod bodies are relatively inserted into the rod cavities of the front support rods in a sliding manner along the length direction of the push rod body, and the handle rods at the two sides form the operation handle.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the walking aid vehicle has a simple frame structure in an unfolding state, can provide stable bearing support for a user, and provides convenience for the travel of the user with inconvenient legs and feet; when the frame is folded, the rear wheel support rotates and folds relative to the front wheel support to drive the rear part of the seat frame to move upwards, so that the seat frame and the bottom connecting rod fold between the front wheel support and the rear wheel support.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a walker in an unfolded state of the walker of the present utility model;

FIG. 2 is a schematic view of the walker of FIG. 1 in a three-dimensional configuration with the seat pan, back rest, front wheel assemblies and rear wheel assemblies removed; FIG. 3 is a side view of the walker of FIG. 1 in an expanded state;

FIG. 4 is a side view of the walker of FIG. 1 in a semi-collapsed condition;

FIG. 5 is a side view of the walker as shown in FIG. 1 in a collapsed condition;

wherein: 1. a front wheel bracket; 11. a front strut; 12. a front cross bar; 2. a rear wheel bracket; 21. a rear strut; 22. a rear cross bar; 3. a seat frame; 31. a seat rod; 32. a seat cross bar; 33. a seat plate; 4. a bottom link; 5. a push rod frame; 51. a push rod; 51a, a putter body; 51b, a handle bar; 6. a grab rail; 7. a front link; 8. a backrest frame; 81. a backrest rod; 82. a backrest cross bar; 83. a backboard; 10. a front wheel assembly; 20. a rear wheel assembly; x1, a first axis; x2, second axis; x3, third axis; x4, fourth axis; x5, fifth axis; x6, sixth axis; x7, seventh axis; x8, eighth axis.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

The following description of the front, rear, left, right, up, down, etc. directions are defined with reference to the directions observed when the user sits on the walker in the unfolded state of the frame of the walker, only for the purpose of clearly explaining the relative positional relationship between the rod members in the walker.

Referring to fig. 1 to 5, a walker comprises a frame having an expanded state and a collapsed state, a front wheel assembly 10 provided at the front of the bottom of the frame, a rear wheel assembly 20 provided at the rear of the bottom of the frame, and a locking mechanism for locking the frame in the expanded state.

The frame comprises a front wheel bracket 1, a rear wheel bracket 2, a seat frame 3, a bottom connecting rod 4, a push rod frame 5, a grab bar 6 and a front connecting rod 7, wherein:

the front wheel bracket 1 comprises two front support rods 11 which are respectively arranged at the left side and the right side and extend from front to back in an upward inclined manner, and a front cross rod 12 which is fixedly arranged between the lower parts of the two front support rods 11 and extends along the left and right directions, and the front wheel assembly 10 is provided with two groups and is respectively arranged at the bottoms of the two front support rods 11.

The rear wheel bracket 2 comprises two rear supporting rods 21 which are respectively arranged at the left side and the right side and extend obliquely upwards from the rear to the front, and a rear cross rod 22 which is fixedly arranged between the upper parts of the two rear supporting rods 21 and extends along the left and the right directions, wherein the rear wheel assembly 20 is provided with two groups and is respectively arranged at the bottoms of the two rear supporting rods 21, and the diameter of the wheel body of the rear wheel assembly 20 is larger than that of the front wheel assembly 10.

The seat frame 3 extends in the front-rear direction, the front portion of the seat frame 3 is pivotally connected to the two front struts 11 about a first axis X1, and the upper portions of the two rear struts 21 are pivotally connected to the rear portion of the seat frame 3 about a second axis X2. Specifically, the seat frame 3 has two seat bars 31 respectively provided on the left and right sides and extending in the front-rear direction, a seat cross bar 32 fixedly provided between the front portions of the two seat bars 31, and a seat plate 33 fixedly provided on the seat bars 31 and the seat cross bar 32. On each of the left and right sides of the frame, the rear strut 21 is pivotally connected to the rear portion of the same-side seat bar 31 about a second axis X2, and the front portion of the seat bar 31 is pivotally connected to the middle portion of the same-side front strut 11 about a first axis X1.

The bottom link 4 has two parts disposed on the left and right sides, the bottom link 4 is disposed below the seat frame 3, on each of the left and right sides of the frame, one end of the bottom link 4 is pivotally connected to the front strut 11, and the other end of the bottom link 4 is pivotally connected to the rear strut 21 on the same side. Specifically, the bottom link 4 extends in the front-rear direction, and the front portion of the bottom link 4 is pivotally connected to the ipsilateral front strut 11 about a fifth axis X5, the fifth axis X5 being located below the first axis X1 in the longitudinal extension direction of the front strut 11; the rear portion of the bottom link 4 is pivotally connected to the rear strut 21 on the same side about a sixth axis X6, which sixth axis X6 is located below the second axis X2 in the length extension direction of the rear strut 21. In the unfolded state of the frame, the bottom link 4 and the seat bar 31 are parallel to each other.

The grab rail 6 extends along the front-back direction, the front connecting rod 7 extends along the up-down direction, the grab rail 6 and the front connecting rod 7 are respectively provided with two grab rails arranged on the left side and the right side, the grab rail 6 is pivoted on the front supporting rod 11 around a seventh axis X7, and the seventh axis X7 is positioned above the first axis X1 in the length extending direction of the front supporting rod 11; the upper end of the front link 7 is pivotally connected to the grab bar 6 about a third axis X3, and the lower end of the front link 7 is pivotally connected to the same-side seat bar 31 about a fourth axis X4, which fourth axis X4 is located on the front side of the front strut 11 or on the rear side of the front strut 11 together with the third axis X3, so that the front link 7 is located on the front side or on the rear side of the front strut 11 as a whole. Here, the front link 7 is located at the rear side of the front strut 11, and in the unfolded state of the frame, the front link 7 and the front strut 11 are parallel to each other, and the front link 7 is shielded by the front strut 11 when viewed from the front of the frame.

The push rod frame 5 extends in the up-down direction, the push rod frame 5 is connected to the upper part of the front wheel bracket 1 in a relatively sliding manner along the length extending direction of the front wheel bracket 1, and at least the top of the push rod frame 5 is provided with an operation handle for holding operation. Specifically, the putter frame 5 is composed of two sets of pushrods 51 provided separately on the left and right sides, each set of pushrods 51 including a putter body 51a extending in the up-down direction, and a handle rod 51b extending bent backward from the top of the putter body 51 a. The putter body 51a is inserted in the body cavity of the front strut 11 on the same side so as to be slidable in the longitudinal direction of the putter body, and the handle bars 51b on both sides constitute the operating handles of the putter frame 5. By adjusting the amount of sliding expansion of the putter body 51a in the front strut 11, the position of the operating handle can be adjusted accordingly, so that the putter frame 5 can be adjusted to a suitable pushing height position, and the position of the putter frame 5 can be reduced as much as possible when the frame is folded, thereby reducing the overall height of the folded frame.

As shown in the drawings, the frame further includes a back rest 8 extending in the up-down direction in the unfolded state of the frame, and a lower end portion of the back rest 8 is pivotally connected to a rear end portion of the seat frame 3. Here, the back rest 8 includes two back rest levers 81 which are respectively provided on the left and right sides and extend in the up-down direction, a back rest cross bar 82 which is fixedly provided between the tops of the two back rest levers 81, and a back rest plate 83 which is fixedly provided on the back rest cross bar 82.

Referring to fig. 1 to 3, the frame of the walker is in an unfolded state in which the seat frame 3 extends in the front-rear direction, the rear wheel brackets 2 are supported below the rear portions of the seat frame 3, and the rear portions of the seat frame 3 are supported on the rear cross bars 22 at the top of the rear wheel brackets 2; the bottom link 4 extends in the front-rear direction and is supported between the front strut 11 and the rear strut 21, the bottom link 4 being parallel to the seat bar 31; the backrest frame 8 is opened relative to the seat frame 3 and stands at the rear of the seat frame 3; the grab bar 6 extends in the front-rear direction. The seat frame 3, the backrest frame 8, the grab bars 6 on both sides and the front strut 11 cooperate with each other to form a sitting space for a user to sit on, and the walker holds the grab bars 51b on both left and right sides above the grab bar frame 5 to push the walker. The frame rod member is small in number and overall weight, the frame is simple in structure in the unfolded state, a user can bear and support stably, and convenience is brought to travel of the user with inconvenience in legs and feet.

When the walker needs to be folded, after the locking mechanism is unlocked, the backrest frame 8 is driven to rotate and fold relative to the seat frame 3 as shown in fig. 4; the push rod 51 is driven to slide downwards relative to the front support rod 11 to reduce the height; the rear wheel bracket 2 is driven to rotate forward towards the front wheel bracket 1 to be close, under the linkage action of the bottom connecting rod 4, the seat frame 3 rotates relative to the front wheel bracket 1 and the rear end part of the seat frame 3 moves upwards, so that the seat frame 3 is gradually folded between the front wheel bracket 1 and the rear wheel bracket 2; at the same time, under the linkage action of the front connecting rod 7, the rear end part of the grab rail 6 moves upwards, so that the grab rail 6 rotates relative to the front supporting rod 11 and gradually folds to the front side of the front supporting rod 11.

As shown in fig. 5, the folded walker is characterized in that the front strut 11, the rear strut 21, the grab rail 6, the front connecting rod 7 and the bottom connecting rod 4 on the left and right sides of the frame are folded along the front and rear directions, and the rear wheel assembly 20 is folded above the front wheel assembly 10 on the same side, so that the structure is compact, and the occupied space is small. The folded walker can be held by a handle bar 61b at the top of the push bar frame 6 to lift the walker, so that the walker is convenient to carry and use in daily life.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A walker comprising a frame having an extended state and a collapsed state, a front wheel assembly and a rear wheel assembly disposed at the bottom of the frame, and a locking mechanism for locking the frame in the extended state, characterized in that: in the unfolded state, the frame comprises:

2. The walker as claimed in claim 1 wherein: the bicycle frame also comprises a grab bar and a front connecting rod, wherein the grab bar extends along the front-back direction and the front connecting rod extends along the up-down direction when the bicycle frame is in a unfolded state, the grab bar and the front connecting rod are respectively provided with two grab bars which are respectively arranged at the left side and the right side, the grab bar is pivotally connected to the front supporting rod and is positioned above the seat frame, one end part of the front connecting rod is pivotally connected to the grab bar, and the other end part of the front connecting rod is pivotally connected to the seat frame.

3. The walker as claimed in claim 2 wherein: the upper end of the front connecting rod is pivotally connected with the grab bar around a third shaft, the lower end of the front connecting rod is pivotally connected with the seat frame around a fourth shaft, and the third shaft and the fourth shaft are jointly located on the front side of the front supporting rod or on the rear side of the front supporting rod.

4. A walker as claimed in claim 3 wherein: the front connecting rod is positioned at the rear side of the front supporting rod, the front connecting rod is parallel to the front supporting rod when the frame is in an unfolding state, and the rear part of the grab rail moves upwards when the frame is converted from the unfolding state to the folding state, so that the grab rail and the front supporting rod are mutually folded.

5. The walker as claimed in claim 1 wherein: the frame also comprises a backrest frame, wherein the backrest frame extends along the up-down direction when the frame is in a unfolded state, and the lower end part of the backrest frame is in pivot connection with the rear end part of the seat frame.

6. The walker as claimed in claim 1 wherein: the rear wheel support further comprises a rear cross rod which is arranged between the upper parts of the two rear support rods and extends along the left-right direction, and the rear part of the seat frame is supported on the rear cross rod when the frame is in a unfolding state.

7. The walker as claimed in claim 1 wherein: the seat frame is provided with two seat rods which are respectively arranged at the left side and the right side and extend along the front-back direction, the seat rods are connected with the front supporting rods around the first shaft pivot, the seat rods are connected with the rear supporting rods around the second shaft pivot, the frame is in a unfolding state, and the bottom connecting rods are parallel to the seat rods.

8. The walker as claimed in claim 1 wherein: the bottom of each side front support pole all be equipped with the front wheel subassembly, each side the bottom of back support pole all be equipped with the back wheel subassembly, the frame is in under the folded condition, front support pole with back support pole is along the direction is drawn in each other around, the back wheel subassembly draw in the top of front wheel subassembly.

9. The walker as claimed in any one of claims 1 to 8 wherein: the frame also comprises a push rod frame, the push rod frame can be connected to the upper part of the front wheel bracket in a relatively sliding manner along the length extension direction of the front wheel bracket, and at least the top of the push rod frame is provided with an operating handle for holding operation.

10. The walker as claimed in claim 9 wherein: the push rod frame comprises two groups of push rods which are respectively arranged at the left side and the right side, each group of push rods comprises a push rod body extending along the up-down direction and a handle rod bending and extending backwards from the top of the push rod body, the push rod bodies are relatively inserted into rod cavities of the front support rods in a sliding manner along the length direction of the push rod bodies, and the handle rods at the two sides form the operation handle.