CN215385309U - Folding wheelchair frame - Google Patents
Folding wheelchair frame Download PDFInfo
- Publication number
- CN215385309U CN215385309U CN202121221427.6U CN202121221427U CN215385309U CN 215385309 U CN215385309 U CN 215385309U CN 202121221427 U CN202121221427 U CN 202121221427U CN 215385309 U CN215385309 U CN 215385309U
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- frame
- front wheel
- wheel frame
- wheelchair
- positioning
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Abstract
A folding wheelchair frame comprises a backrest frame and a seat frame; the seat frame, the front wheel frame and the rear wheel frame are sequentially hinged to the backrest frame along the length direction of the backrest frame; the wheelchair further comprises a locking device for locking and fixing the front wheel frame when the wheelchair is in an unfolded state, wherein the locking device comprises two positioning hooks and a first synchronous connecting rod, wherein the two positioning hooks are symmetrically and fixedly arranged at two ends of the first synchronous connecting rod; the two positioning hooks are respectively and rotatably arranged on two sides of the front wheel frame; each positioning hook is formed with a positioning hook; positioning columns for clamping the positioning hooks are formed on two sides of the front wheel frame respectively; the two ends of the second synchronous connecting rod are respectively hinged to the seat frame and the front wheel frame, and the two ends of the third synchronous connecting rod are respectively hinged to the front wheel frame and the rear wheel frame; the seat frame, the front wheel frame and the rear wheel frame are synchronously turned towards the direction close to the backrest frame, so that the wheelchair is folded.
Description
Technical Field
The utility model relates to the technical field of wheelchairs, in particular to a folding wheelchair frame.
Background
Most wheelchairs are provided with a collapsible structure in order to make them occupy a little less space when not in use. Generally, the wheelchair is horizontally folded and folded through the folding seat frame, so that the width of the wheelchair is reduced, but in the process of carrying the wheelchair, the height of the wheelchair occupies more space, so that when a family carries the wheelchair to go out, the wheelchair cannot be placed into a rear trunk of a household vehicle, and the wheelchair is not easy to be carried out.
SUMMERY OF THE UTILITY MODEL
In view of the shortcomings of the prior art, the utility model aims to provide a folding wheelchair frame.
In order to achieve the purpose, the utility model provides a folding wheelchair frame, which comprises a backrest frame and a seat frame; the seat frame, the front wheel frame and the rear wheel frame are sequentially hinged to the backrest frame along the length direction of the backrest frame; the wheelchair further comprises a locking device used for locking and fixing the front wheel frame when the wheelchair is in an unfolded state, wherein the locking device comprises two positioning hooks and a first synchronous connecting rod, and the two positioning hooks are symmetrically and fixedly arranged at two ends of the first synchronous connecting rod; the two positioning hooks are respectively and rotatably arranged on two sides of the front wheel frame; each positioning hook is formed with a positioning hook; positioning columns for clamping the positioning hooks are formed on two sides of the front wheel frame respectively; the two ends of the second synchronous connecting rod are respectively hinged to the seat frame and the front wheel frame, and the two ends of the third synchronous connecting rod are respectively hinged to the front wheel frame and the rear wheel frame.
Furthermore, the backrest frame also comprises two handrail rods, and the two handrail rods are respectively hinged with the backrest frame.
Further, the bicycle frame also comprises a foot rest, wherein the foot rest is hinged to the front wheel frame.
Furthermore, the front wheel frame is formed with a limiting rod which is used for being mutually propped against the foot rest.
The utility model has the beneficial effects that: the seat frame, the front wheel frame and the rear wheel frame are synchronously turned towards the direction close to the backrest frame, so that the wheelchair is folded; the seat frame, the front wheel frame and the rear wheel frame are synchronously turned in the direction far away from the backrest frame, so that the wheelchair is unfolded; through making two location hooks joint in two reference columns respectively for the back wheel carrier can't continue to overturn towards the direction of keeping away from the back frame, thereby accomplishes the expansion of wheelchair.
Drawings
Figure 1 is a side view of the wheelchair when deployed.
Figure 2 is a side view of the wheelchair when folded.
The device comprises a backrest frame 1, a seat frame 2, a front wheel frame 3, a positioning column 31, a limiting rod 32, a rear wheel frame 4, a positioning hook 51, a first synchronous connecting rod 52, a grab rail 6, a foot rest 7, a second synchronous connecting rod 81 and a third synchronous connecting rod 82.
Detailed Description
To facilitate an understanding of the utility model, the utility model is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 or 2, in the present embodiment, a folding wheelchair frame includes a back frame 1, a seat frame 2, a front wheel frame 3, a rear wheel frame 4, a locking device, two grab bars 6, a foot rest 7, two second synchronization links 81, and two third synchronization links 82. One end of the seat frame 2, one end of the front wheel frame 3 and one end of the rear wheel frame 4 are sequentially hinged to the backrest frame 1 along the length direction of the backrest frame 1, so that the seat frame 2, the front wheel frame 3 and the rear wheel frame 4 can perform reciprocating overturning motion, wherein one end of the rear wheel frame 4 is arranged at the tail end of the backrest frame 1. The two second synchronous connecting rods 81 are aligned with each other, one ends of the two second synchronous connecting rods 81 are respectively hinged to two sides of the seat frame 2, and the other ends of the two second synchronous connecting rods 81 are respectively hinged to two sides of the front wheel frame 3, so that the second synchronous connecting rods 81, the seat frame 2, the front wheel frame 3 and the backrest frame 1 form a first four-bar mechanism, and the seat frame 2 and the front wheel frame 3 move synchronously. The two third synchronous connecting rods 82 are aligned with each other, one ends of the two third synchronous connecting rods 82 are respectively hinged to two sides of the front wheel frame 3, and the other ends of the two third synchronous connecting rods 82 are respectively hinged to two sides of the rear wheel frame 4, so that the third synchronous connecting rods 82, the front wheel frame 3, the rear wheel frame 4 and the backrest frame 1 form a second four-bar mechanism, and the front wheel frame 3 and the rear wheel frame 4 synchronously move. In the embodiment, the wheelchair is folded by synchronously turning the seat frame 2, the front wheel frame 3 and the rear wheel frame 4 to the direction close to the backrest frame 1; the wheelchair is unfolded by synchronously turning the seat frame 2, the front wheel frame 3 and the rear wheel frame 4 in the direction far away from the backrest frame 1, wherein when the seat frame 2 is turned to be horizontally arranged, the wheelchair is unfolded.
In the present embodiment, one ends of the two grab bars 6 and the two grab bars 6 are respectively hinged to the back frame 1. When the wheelchair is folded, the two handrail rods 6 are turned over towards the direction close to the backrest frame 1, so that the two handrail rods 6 are both turned over to be horizontally aligned with the backrest rods; when the wheelchair is unfolded, the two grab bars 6 are turned over towards the direction far away from the backrest frame 1, so that the two grab bars 6 are both turned over to be perpendicular to the backrest bars.
In this embodiment, the foot rests 7 are hinged to the front wheel frame 3. The front wheel frame 3 is formed with a stopper rod 31 for abutting against the foot rest 7. When the wheelchair is folded, the foot rest 7 is turned towards the direction close to the backrest frame 1, and one end of the foot rest 7 is far away from the limiting rod 31; when the wheelchair is unfolded, the foot rest 7 is turned in the direction away from the backrest frame 1, when the foot rest 7 is turned to the position that one end of the foot rest 7 is pressed against the limiting rod 31, the foot rest 7 is unfolded, and at the moment, the foot rest 7 can be used for supporting the feet of a user.
In the present embodiment, the locking device includes two positioning hooks 51 and a first synchronizing link 52, wherein each positioning hook 51 is formed with a positioning hook 51; the two positioning hooks 51 are rotatably mounted on two sides of the front wheel frame 3, and the two positioning hooks 51 are symmetrically arranged at two ends of the first synchronization connecting rod 52, so that the two positioning hooks 51 can synchronously turn back and forth. In this embodiment, positioning posts 31 for the positioning hooks 51 to engage are respectively formed on two sides of the front wheel frame 3, wherein the positioning posts 31 are disposed at one end of the front wheel frame 3 close to the backrest frame 1. When the wheelchair is about to finish unfolding, overturn two positioning hooks 51 towards the direction close to the backrest frame 1, make two positioning hooks 51 respectively push up and touch two positioning columns 31, then, continue the upset of back wheel carrier 4 towards the direction of keeping away from the backrest frame 1, make two positioning hooks 51 respectively joint in two positioning columns 31, make the upset of the unable orientation of keeping away from the backrest frame 1 of continuation of back wheel carrier 4, thereby accomplish the unfolding of wheelchair, at this moment, the back wheel carrier 4 extends towards the rear slope of wheelchair, preceding wheel carrier 3 extends along the slope of the place ahead of wheelchair, seat frame 2 is horizontal arrangement. In this embodiment, before folding the wheelchair, the two positioning hooks 51 need to be turned away from the backrest frame 1, so that the two positioning hooks 51 are separated from the two positioning posts 31.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the utility model without departing from the scope of the utility model as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (4)
1. The utility model provides a folding wheelchair frame, includes back frame (1) and seat frame (2), its characterized in that: the backrest frame is characterized by further comprising a front wheel frame (3) and a rear wheel frame (4), wherein the seat frame (2), the front wheel frame (3) and the rear wheel frame (4) are sequentially hinged to the backrest frame (1) along the length direction of the backrest frame (1); the wheelchair further comprises a locking device used for locking and fixing the front wheel frame (3) when the wheelchair is in an unfolded state, wherein the locking device comprises two positioning hooks (51) and a first synchronous connecting rod (52), and the two positioning hooks (51) are symmetrically and fixedly arranged at two ends of the first synchronous connecting rod (52); the two positioning hooks (51) are respectively and rotatably arranged on two sides of the front wheel frame (3); each positioning hook (51) is formed with a positioning hook (51); positioning columns (31) for clamping the positioning hooks (51) are respectively formed on two sides of the front wheel frame (3); the bicycle is characterized by further comprising a second synchronous connecting rod (81) and a third synchronous connecting rod (82), wherein two ends of the second synchronous connecting rod (81) are respectively hinged to the seat frame (2) and the front wheel frame (3), and two ends of the third synchronous connecting rod (82) are respectively hinged to the front wheel frame (3) and the rear wheel frame (4).
2. A folding wheelchair frame as claimed in claim 1, wherein: the backrest frame is characterized by further comprising two grab rails (6), wherein the two grab rails (6) are respectively hinged to the backrest frame (1).
3. A folding wheelchair frame as claimed in claim 1, wherein: the bicycle frame also comprises a foot rest (7), wherein the foot rest (7) is hinged to the front wheel frame (3).
4. A folding wheelchair frame as claimed in claim 3, wherein: the front wheel frame (3) is formed with a limiting rod (32) which is used for being mutually propped against the foot rest (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221427.6U CN215385309U (en) | 2021-06-02 | 2021-06-02 | Folding wheelchair frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221427.6U CN215385309U (en) | 2021-06-02 | 2021-06-02 | Folding wheelchair frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215385309U true CN215385309U (en) | 2022-01-04 |
Family
ID=79678541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121221427.6U Active CN215385309U (en) | 2021-06-02 | 2021-06-02 | Folding wheelchair frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215385309U (en) |
-
2021
- 2021-06-02 CN CN202121221427.6U patent/CN215385309U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |