RU2740222C1 - Quick-release and easy-to-assemble adjustable wheelchair - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: present invention relates to wheelchairs. Adjustable wheelchair comprises carcass assembly, seat pad assembly mounted on carcass assembly, armrest assembly mounted on carcass assembly on both sides of seat pad assembly, a movable step connected to the front part of the frame assembly, a brake assembly arranged on the side of the carcass assembly, and rear and universal wheels mounted on the carcass assembly. Frame assembly includes a rear bulkhead, a frame, a frame connection unit and a first mounting plate of the rear wheel. Rear bulkhead includes upper and lower back bulkheads, between which backrest folding mechanism is arranged. On upper back bulkhead partition there is a handle, and lower back bulkhead is connected to frame connecting unit equipped with armrest clamp. Frame includes upper and lower frames, and frame connecting unit has coupling attachment with upper frame. First mounting plate of rear wheel is located between upper and lower frames and is combined with frame connection unit. On upper frame there installed is an armrest slot, tie-rod and gasket-damper of partition bulk. In front part of lower frame there is fixing unit, and in rear part of it - lower rear coupling attachment. Seat cushion assembly includes a seat cushion casing with central rods coupled by a coupling on both sides of the cushion casing, and a pull-out cushion mounted on said rods. Armrest assembly comprises an armrest case with a backrest of the armrest connection unit and a guide unit on the lower side of the connecting unit. Guide arm unit is connected to the frame connection unit. On the front part of the armrest casing the eccentric lock is installed, combined with the slot for the armrest. Armoured screen equipped with an armrest lining is fixed on the armrest body. Movable rod is attached to the upper part of the armrest lining, and an armrest pad is fixed in the upper part of this rod. Armrest lining and movable rod are combined with sliding pin and pressure handle installed on the armrest body to adjust the height of the pad of the armrest. Movable footstep includes a bulkhead part, a support bulkhead, a foot plate and an assembled eccentric lock of the foot step. Bulkhead step part is connected with lower frame, support bulkhead is with lower part of foot step bulkhead, and foot plate is with lower part of support bulkhead. In the upper part of the footstep bulkhead there is an assembled eccentric lock of the foot step, which is connected to the fixing unit. Rear wheel is connected to carcass assembly by first rear wheel set plate, and universal wheel is connected with lower frame.

EFFECT: proposed invention ensures creation of adjustable wheelchair with fast disassembly and assembly.

9 cl, 7 dwg

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the field of wheelchairs, and more particularly to an adjustable quick disassembly and assembly wheelchair.

DESCRIPTION OF PREVIOUS TECHNOLOGY

With the accelerating aging of the population and the concentration of a young workforce in large cities with high employment, the daily life of single older people has become a common concern of society. In addition to the development of social welfare interventions and a disability care program, an increasing number of people are realizing that providing people with disabilities (in particular those with disabled legs) with independent, self-guided assistive technology is the only way to help people with physical disabilities. to develop self-confidence and live a happy life.

A wheelchair is an important rehabilitation tool. It is not only a means of transportation for people with disabilities, but also an important means for them to study and participate in public life. An ordinary wheelchair consists of four parts: the chair frame, wheels, brake and backrest. Currently, most wheelchairs use a fixed armrest, seat cushion and footrest joint and cannot be quickly disassembled and reassembled. For people with disabilities (especially those with disabled legs), a fixed armrest and footrest will adversely affect their movement from wheelchair to bed or elsewhere. At the same time, most people with disabilities have to spend most of their time in wheelchairs due to limited mobility, and sitting in a wheelchair for extended periods can also cause fatigue. Moreover, the rear wheels are fixed and cannot be replaced as needed.

As technology improves and living conditions improve, the functional requirements for wheelchairs are also increasing day by day. To meet the ever-increasing user requirements, wheelchair components need to be continuously improved. To increase comfort, existing chairs are becoming more sophisticated and relatively expensive, which will be a heavy burden for ordinary people.

SUMMARY OF THE INVENTION

To solve the above technical problem, an object of the present invention is to provide an adjustable wheelchair with quick disassembly and assembly. The wheelchair of the present invention has a rational structure, the armrest and the footrest of the chair are mounted by means of an eccentric lock, and thus can be easily assembled and disassembled. At the same time, the footrest is rotating, and the armrest is adjustable in height, and due to this, comfort is increased; the seat cushion can also be extended by adjusting the retractable cushion to further improve comfort. What's more, the drive wheel can be selectively set according to the condition of the coating.

For the above purpose, the invention proposes the following technical solution:

The invention provides an adjustable quick disassembly and assembly wheelchair comprising a frame assembly, a seat cushion assembly, an armrest assembly, a movable footrest, a brake assembly, a rear wheel and a universal wheel. The seat cushion assembly is mounted on the frame assembly, the armrest assembly is mounted on the frame assembly on either side of the seat cushion assembly, the movable footrest connects to the front of the frame assembly, the rear and universal wheels are mounted on the frame assembly, and the brake assembly is located on the side of the frame assembly.

The frame assembly includes a rear bulkhead, a frame, a frame connecting block, and a first rear wheel mounting plate; the rear bulkhead includes the upper and lower bulkheads of the back, between which the backrest folding mechanism is located; a handle is located at the end of the upper bulkhead of the backrest, and the lower bulkhead of the backrest is connected to a frame connecting block equipped with an armrest clamp; the frame includes an upper and a lower frame, and the frame connecting block is coupled to the upper frame; the first mounting plate of the rear wheel is located between the upper and lower frames and is integrated with the frame connecting block; the upper frame has a connector for an armrest, a pull rod and a shock absorber gasket for the bulkhead base; a locking block is installed in the front part of the lower frame, and a lower rear coupling mount is installed in its rear part.

The seat cushion assembly includes a seat cushion body with central rods coupled to either side of the cushion body, and a retractable pad mounted on these rods.

The armrest assembly includes an armrest body, on the rear side of which there is an armrest connecting block, and on the underside of the connecting block, a guide block; the armrest guide block is connected to the frame connection block; an eccentric lock is installed on the front of the armrest body, combined with the armrest connector; a safety net fitted with an armrest lining is attached to the armrest body; a movable rod is attached to the upper part of the lining of the armrest, and an armrest pad is fixed in the upper part of this rod; The armrest lining and movable rod are combined with an adjustable cotter pin and a lever arm mounted on the armrest body to adjust the height of the armrest pad.

The movable footboard includes a footboard bulkhead, support bulkhead, foot plate and prefabricated footboard eccentric lock; the bulkhead of the step is connected to the lower frame, the bulkhead is connected to the lower part of the bulkhead, and the foot plate is connected to the lower part of the bulkhead; In the upper part of the step bulkhead, a prefabricated eccentric step lock is installed, which is connected to the fixing block.

The rear wheel is connected to the frame assembly through the first rear wheel mounting plate, and the universal wheel is connected to the lower frame.

In a preferred embodiment, a plurality of openings are provided on the upper and lower frames, respectively, and also several openings of the same diameter are located on the frame connection block; The first rear wheel mounting plate can be positioned in different positions by matching holes on the frame connection block and the bottom frame.

In a preferred embodiment, the extension distance of the retractable cushion is selected by adjusting the mounting position of the frame connection unit.

In a preferred embodiment, the armrest assembly can be quickly assembled and disassembled by engaging the eccentric armrest lock with the armrest connector and by engaging the armrest guide block with the armrest clip on the frame connector block.

In a preferred embodiment, the prefabricated eccentric footrest latch includes an eccentric footrest latch, a base of the latch, a compressible spring, and a footrest locating pin; on one side of the base of the eccentric latch of the footrest, the bulkhead of the footboard is connected, and on the other, a fixing block; The footrest eccentric lock is installed in the upper part of the foot of this lock, and the movable footboard can be quickly assembled and disassembled due to the interaction of the footboard eccentric lock, the compressible spring and the positioning pin of the footboard.

In a preferred embodiment, a collapsible bar is located under the seat cushion assembly, which is connected to the frame assembly via a movable roller and interacts with a rod on the upper frame.

In a preferred embodiment, the first mounting plate of the rear wheel has several mounting holes, and depending on the size of the rear wheel, the holes can be adjusted to different heights.

In a preferred embodiment, a second mounting plate is mounted on the bottom of the lower frame and is used to mount a rear wheel that is not suitable for mounting on the first mounting plate.

In a preferred embodiment, a footrest connection block is installed in the upper part of the footrest bulkhead, by means of which the movable footboard is connected to the lower frame on the frame unit, and this footboard can be rotated by means of this connection block, the rotation angle being 0-180 °.

Due to the above technical solutions, when compared with the prior art, the present invention has the following advantages:

1. The wheelchair of the present invention has a rational structure, wherein the armrest assembly and the movable footrest are assembled and thus can be quickly detached or installed. This makes it easier for people with disabilities to move around.

2. The height of the wheelchair armrest and its angle can be freely adjusted according to your convenience requirements. At the same time, there is a retractable cushion on the seat cushion, which can be adjusted by adjusting the frame connector on the frame assembly to set the seat depth. The seat cushion can be folded or unfolded to match the seat depth for additional comfort.

3. Through the first and second setting plates, rear wheels of different sizes can be selectively installed to improve the ride comfort. You can also select different sized rear wheels to adjust the seat height and tilt angle of the wheelchair.

4. The wheelchair of the present invention is foldable and therefore easy to carry. At the same time, the armrest assembly, the rear wheels, and the movable footrest are quickly disassembled, and thus can be conveniently placed.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic representation of a wheelchair according to the present invention;

FIG. 2 is an exploded view of a wheelchair according to the present invention;

FIG. 3 is an exploded view of the armrest assembly of the present invention;

FIG. 4 is an exploded view of a movable footboard according to the present invention;

FIG. 5 is a schematic illustration of a seat cushion assembly according to the present invention;

FIG. 6 is a schematic view of a collapsible rod according to the present invention;

FIG. 7 is a diagram of the operation of the second mounting plate according to the present invention, where:

1. Frame assembly; 2. Armrest assembly; 3. Seat cushion assembly; 4. Movable footboard; 5. Rear wheel; 6. Universal wheel; 7. Brake unit; 8. Movable roller; 9. Foldable rod; 101. Upper back bulkhead; 102. Lower back bulkhead; 103. Backrest folding mechanism; 104. Handle; 105. Frame connecting block; 106. Armrest clamp; 107. Upper frame; 108. Bottom frame; 109. First rear wheel mounting plate; 110. Connector for armrest; 111. Craving; 112. Gasket-shock absorber at the base of bulkheads; 113. Fixing block; 114. Bottom rear coupling mount; 115. Holes; 116. Installation holes; 201. Armrest body; 202. Armrest connecting block; 203. Armrest guide block; 204. Eccentric locking of the armrest; 205; Safety net; 206. Movable rod; 207. Pad for the armrest; 208. Cotter pin; 209. Lever handle; 210. Facing the armrest; 301. Seat cushion body; 302. Central rods; 303. Pull-out pillow; 401. Bulkhead step; 402. Support bulkhead; 403. Foot plate; 404. Eccentric footrest lock; 405. Base of eccentric footrest lock; 406. Compressible spring; 407. Footrest locating pin; 408. Footrest connecting block; 501. Second mounting plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

The present invention will be described below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended solely to demonstrate the present invention and not to limit its scope.

As shown in FIG. 1, an adjustable quick disassembly and assembly wheelchair includes a frame assembly 1, a seat cushion assembly 3, an armrest assembly 2, a movable footrest 4, a brake assembly 7, a rear wheel 5 and a universal wheel 6. The seat cushion assembly 3 is mounted on the frame assembly 1, the armrest assembly 2 is located on either side of the seat cushion assembly 3, and the armrest assembly 2 is mounted on the frame assembly 1. The movable footrest 4 is connected to the front of the frame assembly 1, rear 5 and universal 6 wheels are installed on the frame unit, respectively, and the brake unit 7 is located on the side of the frame unit 1.

As shown in FIG. 2, the frame assembly includes a rear bulkhead, a frame, a frame connecting block 105, and a first rear mounting plate 109. The rear bulkhead includes an upper 101 and lower bulkhead 102 between which a backrest folding mechanism 103 is located. At the end of the upper bulkhead 101 the handle 104 is installed, the frame connection block 105 is connected to the lower bulkhead 102 and is equipped with an armrest clamp 106. The frame includes the upper 107 and the lower 108 frames, and the frame connection block 105 is coupled with the upper frame 107; the first mounting plate of the rear wheel 109 is located between the upper 107 and lower 108 frames and is combined with the frame connecting block 105. The upper frame 107 has a connector for an armrest 110, a rod 111 and a bulkhead base damper pad 112. A fixing device is installed in the front part of the lower frame 108. block 113, and in its rear part there is a lower rear coupling mount. On the upper 107 and lower 108 frames, respectively, several open holes 115 are located, and several holes 115 of the same diameter are located on the frame joint block 105. The first mounting plate of the rear wheel 109 can be installed in different positions by matching the holes 115 on the frame joint block 105 and the lower frame 108, thereby allowing the adjustment of the distance between the front and rear wheels and a slight adjustment of the angle of the wheelchair. On the first mounting plate of the rear wheel 109, there are several mounting holes 116, and depending on the size of the rear wheels 5, the holes 116 can be selected for different heights, thereby allowing the seat height adjustment and wheelchair tilt adjustment.

As shown in FIG. 5, the seat cushion assembly 3 includes a seat cushion body 301 with center rods 302 coupled to either side of the cushion body 301, and a retractable cushion 303 mounted on these rods 302. The extension distance of the retractable cushion is selected by adjusting the mounting position of the frame connection block 105. The retractable cushion 303 can be adjusted by adjusting the frame connector 105 on the frame assembly 1 to further adjust the seat. The seat cushion 301 can be folded or unfolded according to the seat height for increased comfort.

As shown in FIG. 3, the armrest assembly 2 includes an armrest body 201 with an armrest connector 202 at the rear and a guide block 203 on the underside of the connector 202. The armrest guide 203 is connected to a frame connector 105. At the front of the armrest body 201, an eccentric lock 204 is installed, combined with a connector for the armrest 110. A safety net 201 is fixedly attached to the armrest body 201. The armrest body 201 is equipped with an armrest lining 210, to the upper part of which a movable rod 206 is attached, and an armrest pad is fixedly fixed in the upper part of this rod 207. Armrest trim 210 and movable rod 206 are combined with an adjustable cotter pin 208 and a push handle 209 mounted on the armrest body 201 to adjust the height of the armrest pad 207. The armrest assembly 2 can be quickly assembled and disassembled through the interaction of an eccentric the armrest lock 204 with the armrest 110 connector and by the interaction of the armrest guide block 203 with the armrest clip 106 on the frame connection block 105. The front fixed pin can be released by pulling the armrest eccentric lock 204 to activate the armrest so that it can be raise. To remove the armrest assembly 2, it is necessary to open the clamp of the armrest 106 of the rear fixed pin with the eccentric lock of the armrest extended and folded back and rotate it 90 degrees inward, and then remove the armrest assembly 2 upward.

As shown in FIG. 4, the movable step 4 includes a step bulkhead 401, a support bulkhead 402, a foot plate 403, and a prefabricated eccentric lock. The bulkhead 401 is connected to the bottom frame 108. The bulkhead 402 is connected to the bottom of the bulkhead 401, and the foot plate 403 is connected to the lower part of the supporting bulkhead 402. A prefabricated eccentric lock is located on the top of the step 401, and this lock is connected to the fixing block 113 The prefabricated eccentric lock includes an eccentric footrest lock 404, a base of this lock 405, a compressible spring 406, and a footboard locating pin 407. One side of the base of the eccentric lock 405 is connected to the footrest bulkhead 401 and the other to a fixing block 113. Eccentric footplate 404 is located on the upper part of its base 405. The movable footrest 4 can be quickly assembled and disassembled due to the interaction of the eccentric locking of the footrest 404, the compressible spring 406 and the locating pin of this footboard 407. In the upper part of the bulkhead of the footrest 401, a footrest connection block 408 is installed, through which the movable footrest 4 connect with the lower frame 108 on the frame assembly, and this foot 4 can be rotated by means of this connecting block 408, the rotation angle being 0-180 °.

As shown in FIG. 1, the rear wheels 5 are connected to the frame assembly 1 via the first rear wheel mounting plate 109, and the universal wheels 6 are connected to the lower frame 108.

As shown in FIG. 1 and 6, a collapsible rod 9 is located under the seat cushion assembly 3, which is connected to the frame assembly 1 by means of a movable roller 8 and interacts with a rod 111 on the upper frame 107.

As shown in FIG. 7, a second mounting plate 501 is mounted on the bottom of the lower frame 108, which is used to mount rear wheels 5 that are not suitable for mounting on the first mounting plate 109.

The technical solution according to the present invention has the following advantages:

1. The wheelchair of the present invention has a rational structure, wherein the armrest assembly and the movable footrest are assembled and thus can be quickly detached or installed. This makes it easier for people with disabilities to move around.

2. The height of the wheelchair armrest and its angle can be freely adjusted according to your convenience requirements. At the same time, there is a retractable cushion on the seat cushion, which can be adjusted by adjusting the frame connector on the frame assembly to set the seat depth. The seat cushion can be folded or unfolded to match the seat depth for additional comfort.

3. Through the first and second setting plates, rear wheels of different sizes can be selectively installed to improve the ride comfort. You can also select different sized rear wheels to adjust the seat height and tilt angle of the wheelchair.

4. The wheelchair of the present invention is foldable and therefore easy to carry. At the same time, the armrest assembly, the rear wheels, and the movable footrest are quickly disassembled, and thus can be conveniently placed.

The above description contains only preferred embodiments of the present invention and is not intended to limit it. It should be noted that those skilled in the art may make additional modifications and changes without departing from the technical principles of the present invention, and it should also be appreciated that these modifications and changes should be within the scope of the present invention.

Claims (21)

1. Adjustable wheelchair with quick disassembly and assembly, including frame node; a seat cushion assembly installed on the frame assembly; an armrest assembly mounted on the frame assembly on either side of the seat cushion assembly; a movable footboard coupled to the front of the frame assembly; a brake assembly located on the side of the frame assembly; and rear and universal wheels mounted on the frame assembly; characterized in that: the frame assembly includes a rear bulkhead, a frame, a frame connecting block, and a first rear wheel mounting plate; the rear bulkhead includes the upper and lower bulkheads of the back, between which the backrest folding mechanism is located; a handle is located at the end of the upper bulkhead of the backrest, and the lower bulkhead of the backrest is connected to a frame connecting block equipped with an armrest clamp; the frame includes an upper and a lower frame, and the frame connecting block is coupled to the upper frame; the first mounting plate of the rear wheel is located between the upper and lower frames and is integrated with the frame connecting block; the upper frame has a connector for an armrest, a pull rod and a shock absorber gasket for the base of the bulkheads; a fixing block is installed in the front part of the lower frame, and a lower rear coupling mount is installed in its rear part; the seat cushion assembly includes a seat cushion body with central rods coupled to both sides of the cushion body, and a retractable pad mounted on these rods; the armrest assembly includes an armrest body, on the rear side of which there is an armrest connecting block, and on the lower side of the connecting block, a guide block; the armrest guide block is connected to the frame connection block; an eccentric lock is installed on the front of the armrest body, combined with the armrest connector; a safety net fitted with an armrest lining is attached to the armrest body; a movable rod is attached to the upper part of the lining of the armrest, and an armrest pad is fixed in the upper part of this rod; the armrest lining and movable rod are combined with an adjustable cotter pin and a lever arm mounted on the armrest body to adjust the height of the armrest pad; the movable step includes a step bulkhead, a support bulkhead, a foot plate, and a prefabricated eccentric step lock; the bulkhead of the step is connected to the lower frame, the bulkhead is connected to the lower part of the bulkhead, and the foot plate is connected to the lower part of the bulkhead; in the upper part of the bulkhead of the step, a prefabricated eccentric lock of the step is installed, which is connected to the fixing block; the rear wheel is connected to the frame assembly through the first rear wheel mounting plate, and the universal wheel is connected to the lower frame. 2. A wheelchair according to claim 1, characterized in that several open holes are located on the upper and lower frames, respectively, and several holes of the same diameter are located on the frame connecting block; The first rear wheel mounting plate can be positioned in different positions by matching holes on the frame connection block and the bottom frame. 3. A wheelchair according to claim 1, characterized in that the extension distance of the retractable cushion is selected by adjusting the installation position of the frame connecting block. 4. A wheelchair according to claim 1, wherein the armrest assembly can be quickly assembled and disassembled by the interaction of the eccentric armrest lock with the armrest connector, and also by interaction of the armrest guide block with the armrest clip on the frame connector block. 5. A wheelchair according to claim. 1, characterized in that the prefabricated eccentric footrest lock includes an eccentric footrest lock, the base of this lock, a compressible spring and a footrest locating pin; on one side of the base of the eccentric latch of the footrest, the bulkhead of the footboard is connected, and on the other, the fixing block; The footrest eccentric lock is installed in the upper part of the foot of this lock, and the movable footboard can be quickly assembled and disassembled due to the interaction of the footboard eccentric lock, the compressible spring and the positioning pin of the footboard. 6. A wheelchair according to claim 1, characterized in that a foldable rod is located under the seat cushion assembly, which is connected to the frame assembly by means of a movable roller and interacts with a rod on the upper frame. 7. A wheelchair according to claim 1, characterized in that there are several mounting holes on the first mounting plate of the rear wheel and, depending on the size of the rear wheel, you can select holes for different heights. 8. Wheelchair according to claim 1, characterized in that a second mounting plate is installed on the bottom of the lower frame, which is used to mount a rear wheel that is not suitable for installation on the first mounting plate. 9. A wheelchair according to claim 1, characterized in that a footrest connecting block is installed in the upper part of the footboard bulkhead, by means of which the movable footboard is connected to the lower frame on the frame unit, and this footrest can be rotated using this connecting block, the rotation angle is 0-180 °.

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