CN219878482U - Folding wheelchair self-locking structure and folding wheelchair using same - Google Patents
Folding wheelchair self-locking structure and folding wheelchair using same Download PDFInfo
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- CN219878482U CN219878482U CN202320382137.2U CN202320382137U CN219878482U CN 219878482 U CN219878482 U CN 219878482U CN 202320382137 U CN202320382137 U CN 202320382137U CN 219878482 U CN219878482 U CN 219878482U
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Abstract
The utility model discloses a folding wheelchair self-locking structure and a folding wheelchair using the same, wherein the folding wheelchair self-locking structure comprises a front wheel frame, a rear wheel frame, a back frame and a limiting rod; the back frame is provided with a back frame connecting pipe, the tail end of the back frame connecting pipe is bent towards the front side, and the near end of the tail end of the back frame connecting pipe is provided with a hinge seat; the front wheel frame is provided with a front wheel connecting pipe which is hinged with the hinging seat; the top of the rear wheel frame is provided with a self-locking groove, the tail end of the back frame connecting pipe is hinged to the groove wall of the self-locking groove, the groove bottom of the self-locking groove is provided with a buckling groove matched with the back frame connecting pipe, and the buckling groove is positioned at the rear side of the hinged part of the back frame connecting pipe and the self-locking groove; one end of the limiting rod is hinged with the side wall of the rear wheel frame, and the other end of the limiting rod is hinged with the side wall of the front wheel frame. When the folding wheelchair self-locking structure is unfolded, the tail end of the back frame connecting pipe is embedded in the buckling groove, and the self-locking groove is matched with the back frame connecting pipe to achieve the self-locking effect, so that folding safety and stability are improved.
Description
Technical Field
The utility model relates to the technical field of wheelchair design, in particular to a folding wheelchair self-locking structure and a folding wheelchair using the same.
Background
At present, the wheelchair is mainly used for helping the mobility inconvenient crowd remove, and this equipment is although solving mobility inconvenient removal problem that drives crowd, but under the idle circumstances of wheelchair, often can occupy great space, and be unfavorable for the transport, consequently, has appeared folding wheelchair, can fold the wheelchair, and the space that the wheelchair after folding occupies is less, and does benefit to the transport.
The existing folding wheelchair is fixed by a locking structure before being used, so that the hidden trouble of unexpected folding of the folding wheelchair caused by unstable structure of the folding wheelchair is avoided. The people using the wheelchair are the old people generally, the old people have poor remembering, and once forgetting to fix the structure of the folding wheelchair before using, the locking structure has potential safety hazards.
Disclosure of Invention
The utility model aims to provide a self-locking structure of a folding wheelchair, which aims to solve the problem that potential safety hazards can occur when a user forgets to lock the folding wheelchair by using a locking structure; the utility model aims to provide a folding wheelchair, which is used for avoiding the problem that a user forgets to fix the structure of the folding wheelchair by a locking structure before using the folding wheelchair.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a self-locking structure of a folding wheelchair, which comprises a front wheel frame, a rear wheel frame, a back frame and a limiting rod;
the back frame is provided with a back frame connecting pipe, the tail end of the back frame connecting pipe is bent towards the front side, and the near end of the tail end of the back frame connecting pipe is provided with a hinge seat;
the front wheel frame is provided with a front wheel connecting pipe which is hinged with the hinging seat;
the top of the rear wheel frame is provided with a self-locking groove, the tail end of the back frame connecting pipe is hinged to the groove wall of the self-locking groove, the groove bottom of the self-locking groove is provided with a buckle groove matched with the back frame connecting pipe, and the buckle groove is positioned at the rear side of the hinged part of the back frame connecting pipe and the self-locking groove;
one end of the limiting rod is hinged with the side wall of the rear wheel frame, and the other end of the limiting rod is hinged with the side wall of the front wheel frame.
The folding wheelchair self-locking structure further comprises a secondary locking assembly, wherein the secondary locking assembly comprises a locking hook plate and a locking nut which are arranged on the same side; the upper end of the locking hook plate is hinged to the hinging seat, and the locking nut is assembled on the outer side of the self-locking groove; the front side wall of the locking hook plate is provided with an embedded groove matched with the locking nut.
In the folding wheelchair self-locking structure, the back frame further comprises a grabbing rod, the back frame connecting pipe comprises a left back frame connecting pipe and a right back frame connecting pipe which are symmetrical to each other, the left back frame connecting pipe is connected to the left end of the grabbing rod, and the right back frame connecting pipe is connected to the right end of the grabbing rod.
In the folding wheelchair self-locking structure, the front wheel frame further comprises a connecting rod and two front wheels, and the front wheel connecting pipes comprise a left front wheel connecting pipe and a right front wheel connecting pipe which are symmetrical to each other; one front wheel is assembled on the left front wheel connecting pipe, and the other front wheel is assembled on the right front wheel connecting pipe;
one end of the left front wheel connecting pipe is hinged with the hinging seat of the left back frame connecting pipe, and one end of the left front wheel connecting pipe is connected with the left side of the connecting rod;
one end of the right front wheel connecting pipe is hinged with the hinging seat of the right back frame connecting pipe, and one end of the right front wheel connecting pipe is connected with the right side of the connecting rod.
In the folding wheelchair self-locking structure, the rear wheel frame comprises a rear wheel frame and rear wheels, the rear wheels are arranged on the left side and the right side of the rear wheel frame, the self-locking grooves comprise left self-locking grooves and right self-locking grooves which are identical in structure, the left self-locking grooves are arranged on the left side of the rear wheel frame, and the right self-locking grooves are arranged on the right side of the rear wheel frame;
the tail end of the left back frame connecting pipe is hinged to the left self-locking groove, and the tail end of the right back frame connecting pipe is hinged to the right self-locking groove;
the limiting rod comprises a left limiting rod and a right limiting rod, one end of the left limiting rod is hinged with the left side of the rear wheel frame, and the other end of the left limiting rod is hinged with the side wall of the left front wheel connecting pipe; one end of the right limiting rod is hinged with the right side of the rear wheel frame, and the other end of the right limiting rod is hinged with the side wall of the right front wheel connecting pipe.
The folding wheelchair self-locking structure further comprises a brake assembly, wherein the brake assembly comprises a rear wheel brake and a brake handle; the rear wheel brake is assembled above the rear wheel, the brake handle is assembled on the grabbing rod, and the brake handle is connected with the rear wheel brake through a wire tube.
The folding wheelchair self-locking structure further comprises a cushion frame, wherein the left back frame connecting pipe and the right back frame connecting pipe are hinged with the rear end of the cushion frame;
the front end near end of the cushion frame is provided with a left adjusting rod and a right adjusting rod which have the same structure, the upper end of the left adjusting rod is hinged with the cushion frame, a plurality of first adjusting holes are arranged at intervals of the left adjusting rod, the left front wheel connecting pipe is provided with a first fixing screw, and the first fixing screw is connected with the first adjusting holes in an assembling way; the right adjusting rod is provided with a plurality of second adjusting holes at intervals, the right front wheel connecting pipe is provided with a second fixing screw, and the second fixing screw is connected with the second adjusting holes in an assembling mode.
In the folding wheelchair self-locking structure, the folding wheelchair self-locking structure further comprises a foot pad frame, and the foot pad frame is hinged to the connecting rod.
In the folding wheelchair self-locking structure, the back frame further comprises an armrest, and the armrest is hinged to the left back frame connecting pipe or the right back frame connecting pipe.
The utility model also provides a folding wheelchair, and the self-locking structure of the folding wheelchair is used.
One technical scheme of the utility model has the following beneficial effects:
the folding wheelchair self-locking structure comprises a front wheel frame, a rear wheel frame, a back frame and a limiting rod, when the folding wheelchair self-locking structure is completely unfolded, the tail end of a back frame connecting pipe is embedded in a buckling groove, and the self-locking effect is achieved through the matching of the self-locking groove and the back frame connecting pipe; and the front wheel frame and the rear wheel frame play a supporting role on the unfolded folding wheelchair, when a user sits on the folding wheelchair with the folding wheelchair self-locking structure, the weight of the user is transferred to the front wheel frame and the rear wheel frame, so that the front wheel frame tightly presses the back frame connecting pipe in the buckling groove, the self-locking effect is enhanced by utilizing the weight of the user, the folding mechanism is prevented from being folded in the using process of the folding wheelchair, and the safety and the stability of the folding wheelchair self-locking structure are improved.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present utility model;
FIG. 2 is a schematic view showing a folded wheelchair in an unfolded state according to one embodiment of the present utility model;
FIG. 3 is a schematic view showing a folded state of the folding wheelchair according to one embodiment of the present utility model;
in the accompanying drawings: the front wheel frame 1, the rear wheel frame 2, the back frame 3, the locking hook plate 5, the locking nut 6, the cushion frame 8 and the foot pad frame 9;
a front wheel connecting pipe 11, a connecting rod 12 and a front wheel 13; a rear wheel frame 21 and a rear wheel 22; a back frame connecting pipe 31, a grip lever 32, and an armrest 33; a left stopper rod 41 and a right stopper rod 42; rear wheel brake 71, brake handle 72, left adjustment lever 81, right adjustment lever 82;
a left front wheel connecting pipe 111, a right front wheel connecting pipe 112, a self-locking groove 201, a left self-locking groove 202 and a right self-locking groove 203; a catch groove 204; a hinge base 301; a left back frame connecting pipe 311 and a right back frame connecting pipe 312; a first adjustment hole 811, a first set screw 812, a second adjustment hole 821.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, the utility model provides a self-locking structure of a folding wheelchair, which comprises a front wheel frame 1, a rear wheel frame 2, a back frame 3 and a limiting rod;
the back frame 3 is provided with a back frame connecting pipe 31, the tail end of the back frame connecting pipe 31 is bent towards the front side, and the near end of the tail end of the back frame connecting pipe 31 is provided with a hinge seat 301;
the front wheel frame 1 is provided with a front wheel connecting pipe 11, and the front wheel connecting pipe 11 is hinged to the hinging seat 301;
the top of the rear wheel frame 2 is provided with a self-locking groove 201, the tail end of the back frame connecting pipe 31 is hinged to the groove wall of the self-locking groove 201, the groove bottom of the self-locking groove 201 is provided with a clamping groove 204 matched with the back frame connecting pipe 31, and the clamping groove 204 is positioned at the rear side of the hinged position of the back frame connecting pipe 31 and the self-locking groove 201;
one end of the limiting rod is hinged with the side wall of the rear wheel frame 2, and the other end of the limiting rod is hinged with the side wall of the front wheel frame 1.
The folding wheelchair self-locking structure comprises a front wheel frame 1, a rear wheel frame 2, a back frame 3 and a limiting rod, when the folding wheelchair self-locking structure is completely unfolded, the tail end of a back frame connecting pipe 31 is embedded in a buckling groove 204, and the self-locking groove 201 is matched with the back frame connecting pipe 31 to achieve the self-locking effect; moreover, the front wheel frame 1 and the rear wheel frame 2 play a supporting role on the unfolded folding wheelchair, when a user sits on the folding wheelchair with the folding wheelchair self-locking structure, the weight of the user is transferred to the front wheel frame 1 and the rear wheel frame 2, so that the front wheel frame 1 tightly presses the back frame connecting pipe 31 in the buckling groove 204, the self-locking effect is enhanced by the weight of the user, the folding mechanism is prevented from being folded in the using process of the folding wheelchair, and the safety and the stability of the folding wheelchair self-locking structure are improved.
The limiting rod plays a role in limiting the movable range of the front wheel frame 1 and the rear wheel frame 2, so that the problem that the front wheel frame 1 and the rear wheel frame 2 continuously move beyond the movable range due to overlarge weight of a user can be prevented, and the safety of the self-locking structure of the folding wheelchair is improved.
When the folding wheelchair self-locking structure is needed, a user firstly pulls out the back frame connecting pipe 31 from the buckling groove 204, and then rotates the back frame 3 forwards by taking the hinge joint of the hinge seat 301 and the front wheel connecting pipe 11 as the axis; meanwhile, the rear wheel frame 2 rotates forwards by taking the hinge joint of the back frame connecting pipe 31 and the self-locking groove 201 as an axis, so that the back frame 3 and the rear wheel frame 2 are close to one side of the front wheel frame 1, and folding can be completed.
When the self-locking structure of the folding wheelchair is required to be unfolded, the back frame 3 rotates backwards by taking the hinge joint of the hinge seat 301 and the front wheel connecting pipe 11 as the axis, and the back frame connecting pipe 31 is embedded in the buckling groove 204; simultaneously, the rear wheel frame 2 is rotated backwards by taking the hinge joint of the back frame connecting pipe 31 and the self-locking groove 201 as the axis, so that the back frame 3 and the rear wheel frame 2 are far away from the front wheel frame 1, and the self-locking structure of the folding wheelchair can be unfolded.
The locking device comprises a locking hook plate 5, a locking nut 6 and a locking assembly, wherein the locking hook plate 5 and the locking nut 6 are arranged on the same side; the upper end of the locking hook plate 5 is hinged to the hinging seat 301, and the locking nut 6 is assembled on the outer side of the self-locking groove 201; the front side wall of the locking hook plate 5 is provided with an embedded groove matched with the locking nut 6.
By adopting the structure, the folding wheelchair self-locking structure is secondarily locked through the matching of the locking hook plate 5 and the locking nut 6, so that the locking effect is further enhanced, and the safety of the folding wheelchair self-locking structure is improved. When the secondary locking is needed, the user can rotate the locking hook plate 5, so that the locking hook plate 5 rotates forwards by taking the hinge position of the locking hook plate 5 and the hinge seat 301 as the axis, and the locking nut 6 is embedded in the embedded groove. When the secondary locking needs to be released, the user can rotate the locking hook plate 5, so that the locking hook plate 5 rotates backwards by taking the hinge position of the locking hook plate 5 and the hinge seat 301 as the axis, and the locking nut 6 is far away from the embedded groove.
Specifically, the back frame 3 further includes a grasping rod 32, the back frame connecting pipe 31 includes a left back frame connecting pipe 311 and a right back frame connecting pipe 312 that are symmetrical to each other, the left back frame connecting pipe 311 is connected to the left end of the grasping rod 32, and the right back frame connecting pipe 312 is connected to the right end of the grasping rod 32.
In one embodiment of the present utility model, the grip lever 32, the left back frame connecting pipe 311 and the right back frame connecting pipe 312 are integrally formed, and the left back frame connecting pipe 311 and the right back frame connecting pipe 312 are identical in structure. The grab bar 32 serves to connect the left back frame connection pipe 311 and the right back frame connection pipe 312, and the grab bar 32 may provide a grabbing space for a wheelchair occupant.
Specifically, the front wheel frame 1 further includes a connecting rod 12 and two front wheels 13, and the front wheel connecting tube 11 includes a left front wheel connecting tube 111 and a right front wheel connecting tube 112 that are symmetrical to each other; one front wheel 13 is fitted to the left front wheel connection tube 111, and the other front wheel 13 is fitted to the right front wheel connection tube 112;
one end of the left front wheel connecting pipe 111 is hinged with the hinging seat 301 of the left back frame connecting pipe 311, and one end of the left front wheel connecting pipe 111 is connected with the left side of the connecting rod 12;
one end of the right front wheel connecting pipe 112 is hinged with the hinge seat 301 of the right back frame connecting pipe 312, and one end of the right front wheel connecting pipe 112 is connected with the right side of the connecting rod 12.
The connecting rod 12 serves to connect the left front wheel connecting tube 111 and the right front wheel connecting tube 112, the left front wheel connecting tube 111 is hinged with the left back frame connecting tube 311, and the right front wheel connecting tube 112 is hinged with the right back frame connecting tube 312.
Specifically, the rear wheel frame 2 includes a rear wheel frame 21 and a rear wheel 22, the rear wheel 22 is disposed on the left and right sides of the rear wheel frame 21, the self-locking groove 201 includes a left self-locking groove 202 and a right self-locking groove 203 with the same structure, the left self-locking groove 202 is disposed on the left side of the rear wheel frame 21, and the right self-locking groove 203 is disposed on the right side of the rear wheel frame 21;
the tail end of the left back frame connecting pipe 311 is hinged with the left self-locking groove 202, and the tail end of the right back frame connecting pipe 312 is hinged with the right self-locking groove 203;
the limiting rod comprises a left limiting rod 41 and a right limiting rod 42, one end of the left limiting rod 41 is hinged with the left side of the rear wheel carrier 2, and the other end of the left limiting rod 41 is hinged with the side wall of the left front wheel connecting pipe 111; one end of the right limiting rod 42 is hinged to the right side of the rear wheel frame 2, and the other end of the right limiting rod 42 is hinged to the side wall of the right front wheel connecting pipe 112.
The rear wheel frame 21 is a rectangular frame, the rear wheel 22 is arranged at two sides of the lower end of the rear wheel frame 21, and the left self-locking groove 202 and the right self-locking groove 203 are arranged at the upper end of the rear wheel frame 21. The front wheel frame 1, the rear wheel frame 2 and the ground form a stable triangle structure, by adopting the structure, the two sides of the folding wheelchair are provided with self-locking structures, so that the folding wheelchair is more stable, and the safety of the folding wheelchair is improved.
Preferably, further comprising a brake assembly comprising a rear wheel brake 71 and a brake handle 72; the rear wheel brake 71 is mounted above the rear wheel 22, the brake handle 72 is mounted on the grip lever 32, and the brake handle 72 is connected to the rear wheel brake 71 through a wire tube.
The brake handle 72 controls the rear wheel brake 71 through the spool, and the structure is adopted, so that a wheel pushing chair person can brake the rear wheel through the brake handle 72, the displacement of the folding wheelchair caused by uneven ground is avoided, and the safety of the wheelchair is improved.
Optionally, the seat cushion frame 8 is further included, and the left back frame connecting pipe 311 and the right back frame connecting pipe 312 are hinged with the rear end of the seat cushion frame 8;
the front end near end of the cushion frame 8 is provided with a left adjusting rod 81 and a right adjusting rod 82 with the same structure, the upper end of the left adjusting rod 81 is hinged with the cushion frame 8, a plurality of first adjusting holes 811 are arranged at intervals of the left adjusting rod 81, the left front wheel connecting pipe 111 is provided with a first fixing screw 812, and the first fixing screw 812 is in assembled connection with the first adjusting holes 811; the right adjusting rod 82 is provided with a plurality of second adjusting holes 821 at intervals, and the right front wheel connecting pipe 112 is provided with a second fixing screw, and the second fixing screw is assembled and connected with the second adjusting holes 821.
In practical use, a user sits on the cushion frame 8, the left and right adjustment bars 81 and 82 play a supporting role, and the weight of the user is transmitted to the front wheel frame 1. With the above structure, the angle of the cushion frame 8 can be adjusted by the first fixing screw 812 assembled with the first adjusting hole 811 with the corresponding height and the second fixing screw assembled with the second adjusting hole 821 with the corresponding height, so that the user can adjust according to the actual situation, and the user experience can be enhanced.
Preferably, a foot rest 9 is also included, said foot rest 9 being hinged to said connecting rod 12.
By adopting the structure, a user can place feet on the foot pad frame 9, so that the comfort of the user is improved, and the user experience is enhanced. When folding, the foot pad frame 9 rotates upwards with the hinge joint of the foot pad frame 9 and the connecting rod 12 as the axis, and is accommodated below the front wheel frame 1.
Optionally, the back frame 3 further includes an armrest 33, and the armrest 33 is hinged to the left back frame connecting pipe 311 or the right back frame connecting pipe 312.
With the above structure, the armrest 33 plays a role in restricting the user from moving left and right, and prevents the user from falling down from the left and right sides of the wheelchair when the waist is not strong; while also providing the user with a location for hand placement. When folding, the armrest 33 is rotated upward about the hinge between the armrest 33 and the back frame 3, and is stored.
The utility model also provides a folding wheelchair, and the self-locking structure of the folding wheelchair is used.
The folding wheelchair is provided with the self-locking structure, and has the characteristics of rapid folding, simplicity and labor saving. When the folding wheelchair self-locking structure is fully unfolded, the tail end of the back frame connecting pipe 31 is embedded in the buckling groove 204, and the self-locking effect is achieved by matching the self-locking groove 201 with the back frame connecting pipe 31. When a user sits on the folding wheelchair with the folding wheelchair self-locking structure, the weight of the user is transferred to the front wheel frame 1 and the rear wheel frame 2, so that the front wheel frame 1 tightly presses the back frame connecting pipe 31 in the buckling groove 204, the self-locking effect is enhanced by using the weight of the user, the folding mechanism is prevented from being folded in the using process of the folding wheelchair, and the safety and the stability of the folding wheelchair self-locking structure are improved.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of this specification without the exercise of inventive faculty, and such equivalent modifications and alternatives are intended to be included within the scope of the utility model as defined in the claims.
Claims (10)
1. The self-locking structure of the folding wheelchair is characterized by comprising a front wheel frame, a rear wheel frame, a back frame and a limiting rod;
the back frame is provided with a back frame connecting pipe, the tail end of the back frame connecting pipe is bent towards the front side, and the near end of the tail end of the back frame connecting pipe is provided with a hinge seat;
the front wheel frame is provided with a front wheel connecting pipe which is hinged with the hinging seat;
the top of the rear wheel frame is provided with a self-locking groove, the tail end of the back frame connecting pipe is hinged to the groove wall of the self-locking groove, the groove bottom of the self-locking groove is provided with a buckle groove matched with the back frame connecting pipe, and the buckle groove is positioned at the rear side of the hinged part of the back frame connecting pipe and the self-locking groove;
one end of the limiting rod is hinged with the side wall of the rear wheel frame, and the other end of the limiting rod is hinged with the side wall of the front wheel frame.
2. The folding wheelchair self-locking structure of claim 1, further comprising a secondary locking assembly comprising a locking hook plate and a locking nut disposed on the same side; the upper end of the locking hook plate is hinged to the hinging seat, and the locking nut is assembled on the outer side of the self-locking groove; the front side wall of the locking hook plate is provided with an embedded groove matched with the locking nut.
3. The folding wheelchair self-locking structure of claim 1, wherein the back frame further comprises a grip lever, the back frame connecting tube comprises a left back frame connecting tube and a right back frame connecting tube which are symmetrical to each other, the left back frame connecting tube is connected to the left end of the grip lever, and the right back frame connecting tube is connected to the right end of the grip lever.
4. A folding wheelchair self-locking structure according to claim 3, wherein the front wheel frame further comprises a connecting rod and two front wheels, the front wheel connecting tube comprising a left front wheel connecting tube and a right front wheel connecting tube which are symmetrical to each other; one front wheel is assembled on the left front wheel connecting pipe, and the other front wheel is assembled on the right front wheel connecting pipe;
one end of the left front wheel connecting pipe is hinged with the hinging seat of the left back frame connecting pipe, and one end of the left front wheel connecting pipe is connected with the left side of the connecting rod;
one end of the right front wheel connecting pipe is hinged with the hinging seat of the right back frame connecting pipe, and one end of the right front wheel connecting pipe is connected with the right side of the connecting rod.
5. The folding wheelchair self-locking structure according to claim 4, wherein the rear wheel frame comprises a rear wheel frame and rear wheels, the rear wheels are arranged on the left side and the right side of the rear wheel frame, the self-locking grooves comprise left self-locking grooves and right self-locking grooves which are identical in structure, the left self-locking grooves are arranged on the left side of the rear wheel frame, and the right self-locking grooves are arranged on the right side of the rear wheel frame;
the tail end of the left back frame connecting pipe is hinged to the left self-locking groove, and the tail end of the right back frame connecting pipe is hinged to the right self-locking groove;
the limiting rod comprises a left limiting rod and a right limiting rod, one end of the left limiting rod is hinged with the left side of the rear wheel frame, and the other end of the left limiting rod is hinged with the side wall of the left front wheel connecting pipe; one end of the right limiting rod is hinged with the right side of the rear wheel frame, and the other end of the right limiting rod is hinged with the side wall of the right front wheel connecting pipe.
6. The folding wheelchair self-locking structure of claim 5 further comprising a brake assembly comprising a rear wheel brake and a brake handle; the rear wheel brake is assembled above the rear wheel, the brake handle is assembled on the grabbing rod, and the brake handle is connected with the rear wheel brake through a wire tube.
7. The folding wheelchair self-locking structure of claim 4, further comprising a cushion frame, wherein the left back frame connecting pipe and the right back frame connecting pipe are both hinged with the rear end of the cushion frame;
the front end near end of the cushion frame is provided with a left adjusting rod and a right adjusting rod which have the same structure, the upper end of the left adjusting rod is hinged with the cushion frame, a plurality of first adjusting holes are arranged at intervals of the left adjusting rod, the left front wheel connecting pipe is provided with a first fixing screw, and the first fixing screw is connected with the first adjusting holes in an assembling way; the right adjusting rod is provided with a plurality of second adjusting holes at intervals, the right front wheel connecting pipe is provided with a second fixing screw, and the second fixing screw is connected with the second adjusting holes in an assembling mode.
8. The folding wheelchair self-locking structure of claim 4 further comprising a foot rest hinged to the connecting rod.
9. A folding wheelchair self-locking structure according to claim 3, wherein the back frame further comprises an armrest hinged to the left back frame connection tube or the right back frame connection tube.
10. A folding wheelchair characterized in that a folding wheelchair self-locking structure according to any one of claims 1 to 9 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320382137.2U CN219878482U (en) | 2023-03-03 | 2023-03-03 | Folding wheelchair self-locking structure and folding wheelchair using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320382137.2U CN219878482U (en) | 2023-03-03 | 2023-03-03 | Folding wheelchair self-locking structure and folding wheelchair using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219878482U true CN219878482U (en) | 2023-10-24 |
Family
ID=88396945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320382137.2U Active CN219878482U (en) | 2023-03-03 | 2023-03-03 | Folding wheelchair self-locking structure and folding wheelchair using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219878482U (en) |
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2023
- 2023-03-03 CN CN202320382137.2U patent/CN219878482U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |