CN217339164U

CN217339164U - Foldable wheelchair framework and wheelchair

Info

Publication number: CN217339164U
Application number: CN202220458362.5U
Authority: CN
Inventors: 郑明权; 李广勇
Original assignee: Merits Healthcare Industries Suzhou Co Itd
Current assignee: Merits Healthcare Industries Suzhou Co Itd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-09-02
Anticipated expiration: 2032-03-04

Abstract

The utility model belongs to the technical field of the wheelchair of riding instead of walk, concretely relates to collapsible wheelchair skeleton and wheelchair. The utility model provides a foldable wheelchair frame, the left and right sides of the lower end of a back supporting frame are provided with a forward extending abutting part, the left and right sides of the upper end of a rear wheel mounting frame are provided with an abutting table coupled with the abutting part, the front end of the abutting part is hinged with the front end of the abutting table, and the abutting part and the abutting table are abutted up and down; the locking assembly acts between the rear wheel mounting frame and the back support frame and maintains the abutting part and the abutting table to abut against each other; the rear wheel mounting frame extends downwards and backwards from the abutting table; the rear end of the front wheel mounting frame is hinged with the abutting part, and the front wheel mounting frame extends forwards and downwards from the hinged part of the front wheel mounting frame and the abutting part; both ends of the connecting rod are respectively hinged to the rear wheel mounting frame and the front wheel mounting frame. The utility model provides a collapsible wheelchair skeleton can vertically fold up, and the operation of folding up is simple light, and small light in weight is convenient for accomodate and remove after folding up.

Description

Foldable wheelchair framework and wheelchair

Technical Field

The utility model belongs to the technical field of the wheelchair of riding instead of walk, concretely relates to collapsible wheelchair skeleton and wheelchair.

Background

Wheelchairs, including electric wheelchairs and non-electric wheelchairs, are indispensable tools for riding instead of walk for the elderly, disabled and other people with mobility disabilities. In order to facilitate storage, foldable structures, such as a lateral foldable structure and a longitudinal foldable structure, are widely adopted in modern wheelchair frameworks. In contrast, the lateral folding structure is often lighter and easier to store, but the structure is more suitable for non-electric wheelchairs that do not require a power unit to be installed. For electric wheelchairs, a longitudinal folding structure is often adopted, for example, electric wheelchairs disclosed in patents CN113143612A and CN 109394440A. However, the existing longitudinal folding structure generally has complicated components and a heavy overall structure, which causes heavy burden and inconvenience for folding and moving and increases the production cost.

SUMMERY OF THE UTILITY MODEL

To the above deficiencies of the prior art, the present invention provides a foldable wheelchair frame and a wheelchair with simple structure and easy folding.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a collapsible wheelchair frame and a wheelchair comprise a rear wheel mounting frame, a front wheel mounting frame, a back support frame, a connecting rod and a locking component; the left side and the right side of the lower end of the back supporting frame are provided with forward extending abutting parts, the left side and the right side of the upper end of the rear wheel mounting frame are provided with abutting tables coupled with the abutting parts, the front ends of the abutting parts are hinged with the front ends of the abutting tables, and the abutting parts are abutted with the abutting tables up and down; the locking assembly acts between the rear wheel mounting frame and the back support frame and maintains the abutting part and the abutting table to abut against each other; the rear wheel mounting frame extends downwards and rearwards from the abutting table and is provided with rear wheel mounting parts on two sides of the lower part respectively; the left side and the right side of the rear end of the front wheel mounting frame are respectively hinged with the abutting part, the front wheel mounting frame extends towards the front lower part from the hinged part of the abutting part, and a front wheel mounting part is arranged at the lower part of the front wheel mounting frame; both ends of the connecting rod are respectively hinged to the rear wheel mounting frame and the front wheel mounting frame.

Furthermore, in the foldable wheelchair frame, the locking assembly comprises a buckle handle, a buckle rod and an elastic piece; the buckling rod is transversely fixed on the inner side of the rear wheel mounting frame; the buckle handle is hinged on the back support frame and can swing towards the buckle rod, and a concave part which can be buckled with the buckle rod is arranged on the buckle handle; the elastic member is connected between the rear wheel mounting frame and the buckle handle and applies an elastic force to the buckle handle to bring the recess and the buckle lever close to each other.

Furthermore, in the foldable wheelchair framework, the left side and the right side of the rear wheel mounting frame and the front wheel mounting frame are respectively connected with a connecting rod with adjustable length; the connecting rod comprises an inner sleeve and an outer sleeve which are mutually sleeved, and a fastening piece penetrating through the pipe walls of the inner sleeve and the outer sleeve is arranged at the sleeved position; the fastener presses the outer sleeve, so that the outer sleeve and the inner sleeve are pressed and locked mutually.

Furthermore, the foldable wheelchair framework also comprises a hip supporting frame; the hip support frame is horizontally installed at the upper portion of the front wheel mounting frame.

Furthermore, in the foldable wheelchair frame, the hip support frame comprises a front seat tube and a rear seat tube which are arranged in a front-back opposite manner, and also comprises a plurality of connecting seat tubes connected between the front seat tube and the rear seat tube; the left end and the right end of the rear seat tube are respectively hinged with the butting part; the left and right ends of the front seat pipe are connected to the front wheel mounting frame through the supporting members, respectively.

Furthermore, the foldable wheelchair frame also comprises a pair of upper limb supporting frames; the upper limb support frames can be arranged on two sides of the back support frame in an upturned mode and extend forwards.

Furthermore, the foldable wheelchair frame further comprises a foot support frame, and the foot support frame can be mounted at the front end of the front wheel mounting frame in an upturned mode.

Furthermore, in the foldable wheelchair frame, the left side and the right side of the rear wheel mounting frame are respectively provided with an anti-backward-tilting auxiliary wheel mounting frame which extends downwards and backwards.

On the basis of the foldable wheelchair frame, the utility model also provides a wheelchair which is provided with the foldable wheelchair frame.

Has the advantages that: compared with the prior art, the utility model provides a but wheelchair skeleton of folding up realizes that its core skeleton texture of folding up the function is very compact succinct, except being used for installing the indispensable skeleton of rear wheel, front wheel and back, only has the connecting rod that weight is lighter and locks the subassembly as auxiliary structure, and this wheelchair skeleton can vertically fold up, and easy operation of folding up is light, and small light in weight after folding up is convenient for accomodate and remove.

Drawings

Figures 1 and 2 are schematic structural views of a collapsible wheelchair frame.

Figure 3 is a schematic view of a normal use state of the wheelchair.

Fig. 4 is a schematic view of the wheelchair in a folded state.

In the figure, a rear wheel mounting frame 1, a front wheel mounting frame 2, a back support frame 3, a link 4, a hip support frame 6, a stay 7, an upper limb support frame 8, a foot support frame 9, an abutment table 11, a rear wheel mounting portion 12, an anti-backward-tilting auxiliary wheel mounting frame 13, a front wheel mounting portion 22, an abutment portion 31, an inner tube 41, an outer tube 42, a buckle handle 51, a buckle lever 52, an elastic member 53, a recessed portion 511, a front seat tube 61, a rear seat tube 62, and a connecting seat tube 63.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to illustrate the technical solutions of the present invention more clearly and are not to be construed as a limitation.

Unless defined otherwise, technical or scientific terms used herein should be understood as having the ordinary meaning as understood by those of ordinary skill in the art. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

The present embodiment provides a collapsible wheelchair frame, as shown in fig. 1 and 2, comprising a rear wheel mounting frame 1, a front wheel mounting frame 2, a back support frame 3, a link 4 and a locking assembly; both left and right sides of the lower end of the back support frame 3 have abutting portions 31 extending forward, and both left and right sides of the upper end of the rear wheel mounting frame 1 have abutting stages 11 coupled to the abutting portions 31; the abutting table 11 is in a groove shape, the front end of the abutting table 11 is hinged with the front end of the abutting part 31, so that the abutting part 31 can be turned over forwards and upwards relative to the abutting table 11 when folded; the abutting part 31 is abutted with the abutting table 11 up and down, so that the back support frame 3 is limited from falling backwards; the locking component acts between the rear wheel mounting frame 1 and the back supporting frame 3 and maintains the abutting part 31 and the abutting table 11 to abut against each other; the rear wheel mounting frame 1 extends downwards and backwards from the abutting table 11, rear wheel mounting parts 12 are respectively arranged on two sides of the lower part of the rear wheel mounting frame, and rear wheel assemblies with or without power units can be mounted on the rear wheel mounting parts 12; the left and right sides of the rear end of the front wheel mounting frame 2 are respectively hinged with the abutting part 31, the front wheel mounting frame 2 extends forwards and downwards from the hinged part with the abutting part 31 and is provided with a front wheel mounting part 22 at the lower part, and the front wheel mounting part 22 can be used for mounting front wheels such as universal wheels; both ends of the link 4 are hinged to the rear wheel mounting frame 1 and the front wheel mounting frame 2, respectively.

Further, the locking assembly includes a catch 51, a catch lever 52 and an elastic member 53; the buckle rod 52 is transversely fixed on the inner side of the rear wheel mounting frame 1, and can be arranged on one side or two sides, preferably two sides; the buckle handle 51 is hinged on the back support frame 3 and can swing towards the buckle rod 52, the buckle handle 51 is provided with a concave part 511 which can be buckled with the buckle rod 52, when the concave part 511 is buckled with the buckle rod 52, the rotation of the abutting part 31 relative to the abutting table 11 is limited by the buckle handle 51, so that the abutting state of the abutting part 31 and the abutting table 11 is ensured, namely the rear wheel mounting frame 1 and the back support frame 3 are in rigid connection; the elastic member 53 is preferably a tension spring, is connected between the rear wheel mounting frame 1 and the latch knob 51, and applies an elastic force to the latch knob 51 to make the recess 511 and the latch lever 52 close to each other, preventing the recess 511 from being separated from the latch lever 52.

Further, the length of the connecting rod 4 can be adjusted, so that the included angle of the front wheel mounting frame 2 relative to the rear wheel mounting frame 1 can be adjusted conveniently, the posture of the wheelchair framework can be finely adjusted when the wheelchair framework is used, and a comfortable sitting posture is obtained; the connecting rod 4 is arranged at the left side and the right side of the rear wheel mounting frame 1 and the front wheel mounting frame 2, the connecting rod 4 comprises an inner sleeve 41 and an outer sleeve 42 which are mutually sleeved, and a fastening piece, such as a locking bolt, penetrating through the pipe walls of the inner sleeve 41 and the outer sleeve 42 is arranged at the sleeved position; the fastener presses the outer sleeve 42, thereby pressing the outer sleeve 42 and the inner sleeve 41 against each other.

Further, a hip support frame 6 for seat cushion installation may be further installed at the upper portion of the front wheel mounting frame 2; preferably, the hip support frame 6 is arranged substantially horizontally.

Further, the buttocks support frame 6 includes a front seat tube 61 and a rear seat tube 62 which are arranged in tandem and are opposed to each other, and also includes a plurality of connecting seat tubes 63 which are connected between the front seat tube 61 and the rear seat tube 62; the left end and the right end of the backseat pipe 62 are respectively hinged with the abutting part 31; the left and right ends of the front seat tube 61 are connected to the front wheel mounting frame 2 through the support members 7, respectively.

Further, a backward tilting prevention auxiliary wheel mounting frame 13 is provided at each of the left and right sides of the rear wheel mounting frame 1 to extend downward and rearward so as to mount backward tilting prevention auxiliary wheels which can prevent the wheelchair from tilting backward.

When the foldable wheelchair frame provided by the embodiment needs to be folded, the buckle handle 51 can be pulled backwards to separate the buckle rod 52 from the recess 511, and then the back support frame 3 is folded forwards, and meanwhile, the front wheel mounting frame 2 and the connecting rod 4 are linked with each other to be folded in a smaller included angle formed by the back support frame 3 and the rear wheel mounting frame 1.

Example 2

This embodiment provides a wheelchair that utilizes the collapsible wheelchair frame provided in embodiment 1 and shown in figures 1 and 2.

Further, as shown in fig. 3 and 4, upper limb support frames 8 extending forward and being upturned are installed on both sides of the back support frame 3, foot support frames 9 being upturned are installed on the front end of the front wheel mounting frame 2, anti-caster auxiliary wheels are installed on the anti-caster auxiliary wheel mounting frames 13, universal wheels are installed as front wheels on the front wheel mounting portions 22, rear wheels with electric drive units are installed on the rear wheel mounting portions 12, and a steering module for controlling the rotation of the rear wheels is installed on the front end of the upper limb support frames 8.

The above embodiments are exemplary and are intended to illustrate the technical concept and features of the present invention so that those skilled in the art can understand the contents of the present invention and implement the present invention, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A collapsible wheelchair frame characterized by: the device comprises a rear wheel mounting frame (1), a front wheel mounting frame (2), a back supporting frame (3), a connecting rod (4) and a locking component; the left side and the right side of the lower end of the back supporting frame (3) are respectively provided with a butting part (31) extending forwards, the left side and the right side of the upper end of the rear wheel mounting frame (1) are respectively provided with a butting platform (11) coupled with the butting parts (31), the front end of the butting part (31) is hinged with the front end of the butting platform (11), and the butting part (31) is butted with the butting platform (11) up and down; the locking component acts between the rear wheel mounting frame (1) and the back supporting frame (3) and maintains the abutting part (31) and the abutting table (11) to abut against each other; the rear wheel mounting frame (1) extends downwards and backwards from the abutting table (11) and is provided with rear wheel mounting parts (12) on two sides of the lower part; the left side and the right side of the rear end of the front wheel mounting frame (2) are respectively hinged with the abutting part (31), the front wheel mounting frame (2) extends forwards and downwards from the hinged part of the abutting part (31) and is provided with a front wheel mounting part (22) at the lower part; two ends of the connecting rod (4) are respectively hinged to the rear wheel mounting frame (1) and the front wheel mounting frame (2).

2. The collapsible wheelchair frame of claim 1 wherein: the locking assembly comprises a buckle handle (51), a buckle rod (52) and an elastic piece (53); the buckle rod (52) is transversely fixed on the inner side of the rear wheel mounting frame (1); the buckle handle (51) is hinged on the back supporting frame (3) and can swing towards the buckle rod (52), and a concave part (511) which can be buckled with the buckle rod (52) is arranged on the buckle handle (51); the elastic member (53) is connected between the rear wheel mounting frame (1) and the buckle handle (51), and applies an elastic force to the buckle handle (51) to bring the recess (511) and the buckle lever (52) close to each other.

3. The collapsible wheelchair frame of claim 1 wherein: the left side and the right side of the rear wheel mounting frame (1) and the front wheel mounting frame (2) are respectively connected with a connecting rod (4) with adjustable length; the connecting rod (4) comprises an inner sleeve (41) and an outer sleeve (42) which are mutually sleeved, and a fastening piece penetrating through the pipe walls of the inner sleeve (41) and the outer sleeve (42) is arranged at the sleeved position; the fastening element presses the outer sleeve (42) and thereby presses the outer sleeve (42) and the inner sleeve (41) against one another.

4. A collapsible wheelchair frame as claimed in any one of claims 1 to 3 in which: further comprising a hip support frame (6); the hip support frame (6) is horizontally installed at the upper portion of the front wheel mounting frame (2).

5. The collapsible wheelchair frame of claim 4 wherein: the hip supporting frame (6) comprises a front seat pipe (61) and a rear seat pipe (62) which are arranged in a tandem and opposite manner, and also comprises a plurality of connecting seat pipes (63) connected between the front seat pipe (61) and the rear seat pipe (62); the left end and the right end of the rear seat pipe (62) are respectively hinged with the abutting part (31); the left and right ends of the front seat pipe (61) are connected to the front wheel mounting frame (2) through supports (7), respectively.

6. The collapsible wheelchair frame of claim 4 wherein: also comprises a pair of upper limb supporting frames (8); the upper limb support frames (8) can be mounted on two sides of the back support frame (3) in an upturned mode and extend forwards.

7. The collapsible wheelchair frame of claim 4 wherein: the front wheel mounting frame further comprises a foot supporting frame (9), and the foot supporting frame (9) can be mounted at the front end of the front wheel mounting frame (2) in an upturned mode.

8. The collapsible wheelchair frame of claim 4 wherein: the left side and the right side of the rear wheel installation frame (1) are respectively provided with an anti-backward-tilting auxiliary wheel installation frame (13) extending downwards and backwards.

9. A wheelchair, characterized by: comprising a collapsible wheelchair frame according to any one of claims 1 to 8.