CN220608532U - Portable folding wheelchair - Google Patents
Portable folding wheelchair Download PDFInfo
- Publication number
- CN220608532U CN220608532U CN202321971349.0U CN202321971349U CN220608532U CN 220608532 U CN220608532 U CN 220608532U CN 202321971349 U CN202321971349 U CN 202321971349U CN 220608532 U CN220608532 U CN 220608532U
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- frame
- rod
- wheelchair
- hinged
- foot rest
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- 230000035939 shock Effects 0.000 claims description 21
- 239000006096 absorbing agent Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 235000004443 Ricinus communis Nutrition 0.000 description 5
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model relates to a portable folding wheelchair, which comprises a backrest frame, a cushion frame, an armrest frame component and a foot rest component; the middle part of the backrest frame is in folding fit with the rear end of the cushion frame through the armrest frame component, the lower end of the backrest frame is in folding fit with the rear end of the foot rest component, the front end of the cushion frame is in folding fit with the front end of the foot rest component, the front end and the rear end of the foot rest component are respectively provided with universal casters and rear casters, the foot rest component is connected with a pull rod assembly, and the pull rod assembly is arranged at the central position in the wheelchair folding ring or is close to the central position; the pull rod assembly is added to the folding wheelchair, so that the wheelchair can be pulled to move in the folding state of the wheelchair, the burden of a user in carrying is reduced, and in addition, the pull rod assembly is arranged near the central position of the folding wheelchair, so that the stress is balanced.
Description
Technical Field
The utility model relates to the field of wheelchairs, in particular to a portable folding wheelchair.
Background
The Chinese patent application No. 2022235518444 discloses an electric wheelchair with a shock absorption function in 2022, 12 and 28, wherein the electric wheelchair comprises a backrest frame, a cushion frame, an armrest frame assembly and a foot rest assembly; the middle part of the backrest frame is in folding fit with the rear end of the cushion frame through the armrest frame component, the lower end of the backrest frame is in folding fit with the rear end of the foot rest component, the front end of the cushion frame is in folding fit with the front end of the foot rest component, and the front end and the rear end of the foot rest component are respectively provided with a front universal castor and a rear power castor.
Disclosure of Invention
The utility model aims to solve the existing problems and provide a portable folding wheelchair with a simple and reasonable structure, which mainly aims at providing a pull rod assembly which is convenient for the wheelchair to move and is arranged near the central position of the folding wheelchair so as to lead the stress to be more balanced.
The portable folding wheelchair comprises a backrest frame, a cushion frame, an armrest frame component and a foot rest component; the middle part of the backrest frame is in folding fit with the rear end of the cushion frame through the armrest frame component, the lower end of the backrest frame is in folding fit with the rear end of the foot rest component, the front end of the cushion frame is in folding fit with the front end of the foot rest component, the front end and the rear end of the foot rest component are respectively provided with universal casters and rear casters, the foot rest component is connected with a pull rod assembly, and the pull rod assembly is arranged at the central position in the wheelchair folding ring or near the central position.
The aim of the utility model can be also solved by adopting the following technical measures:
the wheelchair folding ring is provided with a wheelchair symmetry line and a wheelchair middle line, the intersection point of the wheelchair symmetry line and the wheelchair middle line forms a central position, and the pull rod assembly is symmetrically arranged on the wheelchair symmetry line and the wheelchair middle line or is symmetrically arranged on the wheelchair symmetry line but is only close to the wheelchair symmetry line.
As a further scheme, a shock absorber is arranged between the rear end of the cushion frame and the rear end of the foot rest assembly, a front fork is arranged at the front end of the foot rest assembly, universal casters are arranged on the front fork, and the front end of the foot rest assembly is placed on the front fork through a shock absorption spring.
As a further scheme, the pull rod assembly comprises a fixed outer tube, the front end and the rear end of the fixed outer tube are provided with pull rod fixing blocks connected with the foot rest assembly, and a telescopic inner tube which stretches up and down when the wheelchair is folded is sleeved in the fixed outer tube, wherein one end of the telescopic inner tube of the innermost ring is further connected with a pull rod handle.
The foot rest assembly comprises a front frame, a rear frame and a foot rest frame; the upper end of front frame, the front end of back frame are articulated each other with the front end of cushion frame, and pedal frame collapsible connection is in the lower extreme of front frame, front frame and pedal frame fold in proper order in the front side of back frame, cushion frame and back frame fold in proper order in the rear side of back frame, and the pull rod assembly is connected on the back frame and extends and mutual parallel arrangement with the length direction of back frame.
As a further scheme, the front frame comprises a left main supporting rod, a right main supporting rod, a rear supporting rod and a fixing rod connected between the two main supporting rods, and the pull rod assembly is connected to the fixing rod; one end of the rear supporting rod is hinged with the rear section of the main supporting rod, the middle part of the rear supporting rod is hinged with the lower end of the backrest frame, the two rear supporting rods are connected through a rear cross rod, the lower end of the shock absorber is connected with the rear cross rod, and the upper end of the shock absorber is connected with the rear end of the cushion frame;
as a further scheme, the back frame comprises a left front supporting rod, a right front supporting rod, a linkage rod and a front cross rod connected between the two front supporting rods, wherein a limiting hinged support is arranged on the front cross rod and hinged with the pedal frame, the upper end of the front supporting rod and the front end of the main supporting rod are hinged with the bottom of the front end of the cushion frame, the front end of the linkage rod is hinged with the lower end of the front supporting rod, and the rear end of the linkage rod is hinged with the lower end of the backrest frame.
As a further scheme, the armrest frame assembly comprises an armrest, a movable joint, a first connecting rod and a second connecting rod, the rear end of the armrest is hinged with the backrest frame, the front end and the rear end of the movable joint are respectively buckled and hinged with the armrest, the lower end of the movable joint is hinged with the upper end of the first connecting rod, the lower end of the first connecting rod is hinged with the front end of the second connecting rod and the cushion frame, and the rear end of the second connecting rod is hinged with the backrest frame.
As a further scheme, the shock absorber comprises an upper joint, a compression spring, a retainer ring and a lower joint, wherein a guide post is arranged at the bottom of the upper joint, a guide sleeve is arranged at the upper part of the lower joint, a guide hole spliced with the guide post is arranged in the guide sleeve, the retainer ring is in threaded connection with the periphery of the guide sleeve, and the compression spring is sleeved outside the guide sleeve and is in compression joint between the upper joint and the retainer ring; the rear end of the cushion frame extends to form an upper hinge arm which is hinged with the upper joint; the rear cross bar extends to form a lower hinge arm, and the lower hinge arm is hinged with the lower joint.
As a further scheme, the rear supporting rod is positioned at the upper part of the main supporting rod, a clamping seat is arranged on the main supporting rod corresponding to the rear supporting rod, a lock rod is further arranged at the front end of the rear supporting rod, and a lock hook is rotatably arranged on the main supporting rod and used for being buckled with the lock rod.
As a further scheme, the rear truckle is arranged at the rear end of the main supporting rod, brake rubber is arranged on the periphery of the main supporting rod corresponding to the rear truckle, a connecting rod in transmission connection with the brake rubber is connected to the main supporting rod, and a brake handle for driving the connecting rod to act is connected to the handrail frame component.
The beneficial effects of the utility model are as follows:
according to the portable folding wheelchair, the pull rod assembly is added, so that the wheelchair can be pulled to move in a folding state, the burden of a user in carrying is reduced, and in addition, the pull rod assembly is arranged near the central position of the folding wheelchair, so that the stress is balanced.
In addition, a shock absorber is arranged between the cushion frame and the rear end of the foot rest assembly, and a shock absorption spring is arranged between the front end of the foot rest assembly and the front caster, so that the wheelchair is provided with a certain shock absorption function, and the riding comfort is improved.
Drawings
Fig. 1 is a schematic view of the wheelchair according to the present utility model in a deployed configuration.
FIG. 2 is a schematic view of the folding and pulling-apart pull rod assembly of the wheelchair of the present utility model.
Fig. 3 is a schematic view of the folding ring structure of the wheelchair of the present utility model.
FIG. 4 is a schematic diagram of a pull rod assembly according to the present utility model.
Fig. 5 is a schematic structural diagram of the present utility model.
Fig. 6 is a schematic diagram of a second embodiment of the present utility model.
Fig. 7 is a schematic cross-sectional structure of the present utility model.
Fig. 8 is an enlarged schematic view of the structure at B in fig. 7.
Fig. 9 is a schematic cross-sectional and partially enlarged structure of the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1 to 9, the portable folding wheelchair includes a back frame 1, a cushion frame 2, an armrest frame assembly 4, and a foot rest assembly 5; the middle part of the backrest frame 1 is in folding fit with the rear end of the cushion frame 2 through the armrest frame component 4, the lower end of the backrest frame 1 is in folding fit with the rear end of the foot rest component 5, the front end of the cushion frame 2 is in folding fit with the front end of the foot rest component 5, the front end and the rear end of the foot rest component 5 are respectively provided with universal casters 6 and rear casters 7, the foot rest component 5 is connected with a pull rod assembly 8, and the pull rod assembly 8 is arranged at the central position in the wheelchair folding ring A or near the central position.
The pull rod assembly 8 is added to the folding wheelchair, so that the wheelchair can be pulled to move in a folding state of the wheelchair, the burden of a user in carrying is reduced, and in addition, the pull rod assembly 8 is arranged near the central position of the folding wheelchair, so that the stress is balanced.
The wheelchair folding ring A is provided with a wheelchair symmetrical line A1 and a wheelchair middle line A2, in the best embodiment, the intersection of the wheelchair symmetrical line A1 and the wheelchair middle line A2 forms a central position, and the pull rod assembly 8 is symmetrically arranged on the wheelchair symmetrical line A1 and the wheelchair middle line A2, so that the pull rod assembly 8 is arranged on the central position, and the stress is more balanced;
however, in other embodiments, the center of gravity of the folding wheelchair may deviate from the wheelchair middle line A2, so the pull rod assembly 8 may also be symmetrically disposed on the wheelchair symmetry line A1, but only close to the wheelchair symmetry line A1, and adjusted according to the change of the center of gravity.
A shock absorber 9 is arranged between the rear end of the cushion frame 2 and the rear end of the foot rest assembly 5, a front fork 501 is arranged at the front end of the foot rest assembly 5, a universal castor 6 is arranged on the front fork 501, and the front end of the foot rest assembly 5 is supported on the front fork 501 through a shock absorption spring 502;
the cushion frame 2 is equipped with bumper shock absorber 9 with the rear end of foot rest subassembly 5 between, is equipped with damping spring 502 between the front end of foot rest subassembly 5 and the preceding truckle for the wheelchair all has certain shock attenuation around, promotes the travelling comfort of taking.
The pull rod assembly 8 comprises a fixed outer tube 81, pull rod fixing blocks 82 connected with the foot rest assembly 5 are arranged at the front end and the rear end of the fixed outer tube 81, a telescopic inner tube 83 which stretches up and down when the wheelchair is folded is sleeved in the fixed outer tube 81, and one end of the telescopic inner tube 83 at the innermost ring is also connected with a pull rod handle 84; in this embodiment, two sections of telescopic inner tubes 83 are disposed in the fixed outer tube 81, and the number of the telescopic inner tubes 83 is determined according to the length of the fixed outer tube 81, so that a user can pull the wheelchair at a comfortable angle, and the wheelchair is not easy to topple over and turn over.
The foot rest assembly 5 comprises a front frame 51, a rear frame 52 and a foot rest frame 53; the upper end of the front frame 51, the front end of the rear frame 52 and the front end of the cushion frame 2 are hinged with each other, the pedal frame 53 is connected to the lower end of the front frame 51 in a foldable manner, the front frame 51 and the pedal frame 53 are sequentially folded on the front side of the rear frame 52, the cushion frame 2 and the backrest frame 1 are sequentially folded on the rear side of the rear frame 52, and the pull rod assembly 8 is connected to the rear frame 52 and extends in the length direction of the rear frame 52 and is arranged in parallel with each other; the structures are uniformly distributed on the left side and the right side of the pull rod assembly 8, so that the stress of the pull rod assembly 8 is more balanced.
The front frame 51 comprises a left main supporting rod 511, a right main supporting rod 511, a rear supporting rod 512 and a fixing rod 513 connected between the two main supporting rods 511, and the pull rod assembly 8 is connected to the fixing rod 513; one end of a rear supporting rod 512 is hinged with the rear section of the main supporting rod 511, the middle part of the rear supporting rod is hinged with the lower end of the backrest frame 1, the two rear supporting rods 512 are connected through a rear cross rod 514, the lower end of the shock absorber 9 is connected with the rear cross rod 514, and the upper end of the shock absorber 9 is connected with the rear end of the cushion frame 2;
the rear frame 52 comprises a left front supporting rod 521, a right front supporting rod 521, a linkage rod 522 and a front cross rod 523 connected between the two front supporting rods 521, wherein a limiting hinged support 524 is arranged on the front cross rod 523, the limiting hinged support 524 is hinged with the pedal frame 53, the upper end of the front supporting rod 521 and the front end of the main supporting rod 511 are hinged with the bottom of the front end of the cushion frame 2, the front end of the linkage rod 522 is hinged with the lower end of the front supporting rod 521, and the rear end of the linkage rod 522 is hinged with the lower end of the backrest frame 1.
The lower end of the front supporting rod 521 is also provided with a supporting sleeve 503, the upper end of the front fork 501 is provided with a guide shaft, the guide shaft passes through the damping spring 502 and then is in rotation and up-down sliding fit with the supporting sleeve 503, and the damping spring 502 is in compression joint between the front fork 501 and the supporting sleeve 503.
The armrest frame assembly 4 comprises an armrest 41, a movable joint 42, a first connecting rod 43 and a second connecting rod 44, wherein the rear end of the armrest 41 is hinged with the backrest frame 1, the front end and the rear end of the movable joint 42 are respectively buckled and hinged with the armrest 41, the lower end of the movable joint 42 is hinged with the upper end of the first connecting rod 43, the lower end of the first connecting rod 43 is hinged with the front end of the second connecting rod 44 and the cushion frame 2, and the rear end of the second connecting rod 44 is hinged with the backrest frame 1;
the bottom of the armrest 41 is provided with a buckling seat 45, and the buckling seat 45 is provided with a buckling hole 451; the movable joint 42 is provided with a locking piece 46, the locking piece 46 is in sliding fit with the movable joint 42, and the locking piece 46 is provided with a buckle 461 which is buckled with a buckle hole 451; the movable joint 42 is also provided with an unlocking button 47, the unlocking button 47 is used for driving the locking block 46 to move so as to control the buckle 461 to leave the buckling hole 451, and a return spring 48 is also arranged between the unlocking button 47 and the movable joint 42.
The shock absorber 9 comprises an upper joint 91, a compression spring 92, a retainer ring 93 and a lower joint 94, wherein a guide post 95 is arranged at the bottom of the upper joint 91, a guide sleeve 96 is arranged at the upper part of the lower joint 94, a guide hole 961 which is spliced with the guide post 95 is arranged on the guide sleeve 96, the retainer ring 93 is in threaded connection with the periphery of the guide sleeve 96, and the compression spring 92 is sleeved outside the guide sleeve 96 and is in compression joint between the upper joint 91 and the retainer ring 93; an upper hinge arm 201 extends from the rear end of the cushion frame 2, and the upper hinge arm 201 is hinged with the upper joint 91; the rear cross bar 514 extends with a lower hinge arm 515, the lower hinge arm 515 being hinged to the lower joint 94.
The rear supporting rod 512 is located at the upper part of the main supporting rod 511, the main supporting rod 511 is provided with a clamping seat 518 corresponding to the rear supporting rod 512, the front end of the rear supporting rod 512 is also provided with a locking rod 516, the main supporting rod 511 is rotatably provided with a locking hook 517, and the locking hook 517 is used for being buckled with the locking rod 516; the rear supporting rod 512 is clamped in the clamping seat 518, so that the rear supporting rod 512 is prevented from swinging left and right relative to the main supporting rod 511.
The rear castor 7 is arranged at the rear end of the main supporting rod 511, the main supporting rod 511 is provided with brake rubber 10 corresponding to the periphery of the rear castor 7, the main supporting rod 511 is connected with a connecting rod 11 in transmission connection with the brake rubber 10, and the handrail frame assembly 4 is connected with a brake handle 12 for driving the connecting rod 11 to act.
The backrest frame 1 is provided with a backrest cushion 13, and the cushion frame 2 is provided with a cushion 23. A safety belt 14 is also arranged between the backrest frame 1 and the cushion frame 2.
The foregoing is a preferred embodiment of the utility model showing and describing the general principles, features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.
Claims (10)
1. The portable folding wheelchair comprises a backrest frame (1), a cushion frame (2), an armrest frame component (4) and a foot rest component (5); the back frame (1) middle part is through the folding cooperation of the rear end of handrail frame subassembly (4) and cushion frame (2), the lower extreme of back frame (1) and the folding cooperation of the rear end of foot rest subassembly (5), the front end of cushion frame (2) and the folding cooperation of the front end of foot rest subassembly (5), the front and back both ends of foot rest subassembly (5) are equipped with universal truckle (6) and rear truckle (7) respectively, its characterized in that: the foot rest assembly (5) is connected with a pull rod assembly (8), and the pull rod assembly (8) is arranged at the central position or near the central position in the wheelchair folding ring (A).
2. The portable folding wheelchair according to claim 1, wherein the wheelchair folding ring (A) is provided with a wheelchair symmetry line (A1) and a wheelchair intermediate line (A2), the intersection of the wheelchair symmetry line (A1) and the wheelchair intermediate line (A2) forms a central position, and the pull rod assembly (8) is symmetrically arranged on the wheelchair symmetry line (A1) and the wheelchair intermediate line (A2) or symmetrically arranged on the wheelchair symmetry line (A1) but only close to the wheelchair symmetry line (A1).
3. The portable folding wheelchair according to claim 1, wherein a shock absorber (9) is arranged between the rear end of the cushion frame (2) and the rear end of the foot rest assembly (5), a front fork (501) is arranged at the front end of the foot rest assembly (5), universal casters (6) are arranged on the front fork (501), and the front end of the foot rest assembly (5) is supported on the front fork (501) through a shock absorption spring (502).
4. The portable folding wheelchair according to claim 1, wherein the pull rod assembly (8) comprises a fixed outer tube (81), pull rod fixing blocks (82) connected with the foot rest assembly (5) are arranged at the front end and the rear end of the fixed outer tube (81), telescopic inner tubes (83) which can be telescopic up and down when the wheelchair is folded are sleeved in the fixed outer tube (81), and one end of the telescopic inner tube (83) at the innermost ring is further connected with a pull rod handle (84).
5. A portable folding wheelchair according to claim 3, characterized in that the foot rest assembly (5) comprises a front frame (51), a rear frame (52) and a foot rest (53); the upper end of preceding frame (51), the front end of back frame (52) are articulated each other with the front end of cushion frame (2), and foot rest frame (53) collapsible connection is in the lower extreme of preceding frame (51), preceding frame (51) and foot rest frame (53) fold in proper order in the front side of back frame (52), the rear side at back frame (52) is folded in proper order in cushion frame (2) and back frame (1), and pull rod assembly (8) connect on back frame (52) and extend and mutual parallel arrangement with the length direction of back frame (52).
6. The portable folding wheelchair according to claim 5, wherein the front frame (51) comprises left and right main supporting rods (511), a rear supporting rod (512) and a fixing rod (513) connected between the two main supporting rods (511), and the pull rod assembly (8) is connected to the fixing rod (513); one end of a rear supporting rod (512) is hinged with the rear section of the main supporting rod (511), the middle part of the rear supporting rod is hinged with the lower end of the backrest frame (1), the two rear supporting rods (512) are connected through a rear cross rod (514), the lower end of the shock absorber (9) is connected with the rear cross rod (514), and the upper end of the shock absorber (9) is connected with the rear end of the cushion frame (2);
the rear frame (52) comprises a left front supporting rod (521), a right front supporting rod (521), a linkage rod (522) and a front cross rod (523) connected between the two front supporting rods (521), wherein a limiting hinged support (524) is arranged on the front cross rod (523), the limiting hinged support (524) is hinged with the pedal frame (53), the upper end of the front supporting rod (521) and the front end of the main supporting rod (511) are hinged with the bottom of the front end of the cushion frame (2), the front end of the linkage rod (522) is hinged with the lower end of the front supporting rod (521), and the rear end of the linkage rod (522) is hinged with the lower end of the backrest frame (1).
7. The portable folding wheelchair of claim 1, wherein: the armrest frame assembly (4) comprises an armrest (41), a movable joint (42), a first connecting rod (43) and a second connecting rod (44), wherein the rear end of the armrest (41) is hinged with the backrest frame (1), the front end and the rear end of the movable joint (42) are respectively buckled and hinged with the armrest (41), the lower end of the movable joint (42) is hinged with the upper end of the first connecting rod (43), the lower end of the first connecting rod (43) is hinged with the front end of the second connecting rod (44) and the seat cushion frame (2), and the rear end of the second connecting rod (44) is hinged with the backrest frame (1).
8. The portable folding wheelchair of claim 6 wherein: the shock absorber (9) comprises an upper joint (91), a compression spring (92), a retainer ring (93) and a lower joint (94), wherein a guide post (95) is arranged at the bottom of the upper joint (91), a guide sleeve (96) is arranged at the upper part of the lower joint (94), a guide hole (961) which is inserted with the guide post (95) is formed in the guide sleeve (96), the retainer ring (93) is in threaded connection with the periphery of the guide sleeve (96), and the compression spring (92) is sleeved outside the guide sleeve (96) and is in compression joint between the upper joint (91) and the retainer ring (93); an upper hinge arm (201) extends from the rear end of the cushion frame (2), and the upper hinge arm (201) is hinged with the upper joint (91); the rear cross bar (514) extends with a lower hinge arm (515), the lower hinge arm (515) being hinged to the lower joint (94).
9. The portable folding wheelchair of claim 6, wherein the rear supporting rod (512) is located at the upper portion of the main supporting rod (511), a clamping seat is arranged on the main supporting rod (511) corresponding to the rear supporting rod (512), a lock rod (516) is further arranged at the front end of the rear supporting rod (512), a lock hook (517) is rotatably arranged on the main supporting rod (511), and the lock hook (517) is used for being buckled with the lock rod (516).
10. The portable folding wheelchair of claim 6 wherein: the rear caster wheel (7) is arranged at the rear end of the main support rod (511), a brake rubber (10) is arranged on the periphery of the main support rod (511) corresponding to the rear caster wheel (7), a connecting rod (11) in transmission connection with the brake rubber (10) is connected to the main support rod (511), and a brake handle (12) for driving the connecting rod (11) to act is connected to the handrail frame assembly (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321971349.0U CN220608532U (en) | 2023-07-25 | 2023-07-25 | Portable folding wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321971349.0U CN220608532U (en) | 2023-07-25 | 2023-07-25 | Portable folding wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220608532U true CN220608532U (en) | 2024-03-19 |
Family
ID=90232846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321971349.0U Active CN220608532U (en) | 2023-07-25 | 2023-07-25 | Portable folding wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220608532U (en) |
-
2023
- 2023-07-25 CN CN202321971349.0U patent/CN220608532U/en active Active
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