CN210785058U - Foldable wheelchair backrest - Google Patents

Abstract

The utility model discloses a can folding wheelchair back, which comprises a supporting column, the pillar passes through the connecting piece to be fixed in the both sides that correspond of first backplate, the inside swing joint of first backplate has the air cushion subassembly, there is the spliced pole at the top of pillar through folding portion swing joint, and the spliced pole passes through the connecting piece to be fixed in the both sides that correspond of second backplate, rotating part swing joint has the handle through rotating part swing joint at the top of spliced pole, folding portion includes folding joint cover, bearing, locating hole, trapezoidal location knot, pull rod, through-hole, swing handle and reset spring, the top of pillar is rotated through the bearing and is connected with folding joint cover, folding joint cover's top welded fastening has the spliced pole, the locating hole has been seted up to the inside that lies in folding joint cover on. The utility model discloses novel structure thinks about ingeniously, is convenient for fold the wheel chair back, can effectually reduce the packing box size, reduces the cost of transportation.

Description

Foldable wheelchair backrest

Technical Field

The utility model relates to a wheelchair accessory technical field specifically is a wheelchair back that can fold.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The wheelchair not only meets the requirements of physical disabilities and mobility-handicapped people for riding instead of walking, but also is more important to facilitate the family members to move and take care of the patients, so that the patients can do physical exercises and participate in social activities by means of the wheelchair.

The common wheelchair generally comprises a foldable frame, front and rear wheels, left and right kneepads, a pedal, left and right detachable armrests, a handle brake device, a seat, a backrest, a medical image data bag, a bedpan, a urine receiving bag hook, an electric stand and the like. The hand-operated wheelchair is added with a hand-operated device on the basis of a common wheelchair. The electric wheelchair is additionally provided with an electronic power assisting system on the basis of a common wheelchair, so that the physical consumption of a user is reduced. On the basis of the electric wheelchair, the intelligent wheelchair is additionally provided with positioning movement, standing movement, remote control movement and related Internet + assisted life.

However, the existing wheelchair backrest cannot be folded, occupies a large space in the transportation process, needs to be packaged by a large packaging box, and is high in transportation cost. Therefore, it is necessary to design a foldable wheelchair backrest.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a wheelchair back that can fold, this wheelchair back novel structure thinks about ingeniously, is convenient for fold the wheelchair back, can effectually reduce the packing box size, reduces cost of transportation.

In order to achieve the above object, the utility model provides a following technical scheme: a foldable wheelchair backrest comprises struts, wherein the struts are fixed on two corresponding sides of a first back plate through connecting pieces, an air cushion assembly is movably connected inside the first back plate, the tops of the struts are movably connected with connecting columns through folding parts, the connecting columns are fixed on two corresponding sides of a second back plate through the connecting pieces, and the tops of the connecting columns are movably connected with handles through rotating parts;

folding portion includes folding adapter sleeve, bearing, locating hole, trapezoidal location knot, pull rod, through-hole, swing handle and reset spring, the top of pillar is rotated through the bearing and is connected with folding adapter sleeve, folding adapter sleeve's top welded fastening has the spliced pole, the locating hole has been seted up to the inside that lies in folding adapter sleeve on the pillar, the through-hole has been seted up to one side of folding adapter sleeve, the inside of through-hole has passed the pull rod, the top welded fastening of pull rod has the trapezoidal location knot of using with the locating hole cooperation, the bottom of pull rod has the swing handle through the bolt fastening, it is fixed with reset spring to lie in cup jointing between through-hole and the swing handle on the pull rod.

Preferably, the rotating part includes base, carousel and fastening knob, the base passes through welded fastening at the top of spliced pole, the inside of base is rotated and is connected with the carousel, it is fixed through the fastening knob on the base between carousel and the base, the top of carousel is through welded fastening there is the handle.

Preferably, a protective rubber sleeve is fixedly sleeved on the handle.

Preferably, the air cushion subassembly includes silica gel overcoat, flexible groove, gas cell, sponge arch, charging connector and bottom plate, flexible groove is seted up at the top of first backplate, the bottom in flexible groove is fixed with the gas cell through the bonding, and the gas cell, the last charging connector who link up first backplate of installing, the top bonding of gas cell is fixed with the bottom plate, the outside of bottom plate is cup jointed and is fixed with the silica gel overcoat, the top equidistance of silica gel overcoat is provided with a plurality of sponge arch.

Preferably, the second back plate is connected with the first back plate through a hinge.

The utility model has the advantages that:

1. when the supporting columns and the connecting columns need to be folded, the rotating disc is rotated to drive the pull rod to rotate, so that the trapezoidal positioning buckles are driven to rotate, the parts, around the positioning holes, of the trapezoidal positioning buckles are separated from the positioning holes, then the rotating disc is pulled, the pull rod drives the trapezoidal positioning buckles 12 to be separated from the positioning holes, the supporting columns and the connecting columns can be folded, otherwise, the rapid assembly can be carried out, the size of a packaging box can be effectively reduced, and the transportation cost is reduced;

2. when the handle needs to be folded, the fastening knob is unscrewed, so that the turntable can rotate in the base, the angle between the handle and the connecting column can be adjusted, the size of the packaging box can be effectively reduced, and the transportation cost is reduced;

3. connect outside inflation equipment through the charging connector, aerify for the gas cell, make the gas cell inflation to can make the outstanding expansion tank of bottom plate by silica gel overcoat parcel, be convenient for play the effect of support to patient's back, comfort level that can effectual promotion patient took.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;

FIG. 2 is a front view of the folding part of the present invention;

fig. 3 is a schematic structural view of a cross-sectional area of the folding connecting sleeve of the utility model;

fig. 4 is a schematic cross-sectional view of a rotating portion of the present invention;

FIG. 5 is a schematic cross-sectional view of the air cushion assembly of the present invention;

reference numbers in the figures: 1. a pillar; 2. a first back plate; 3. an air cushion assembly; 4. a folding part; 5. connecting columns; 6. a handle; 7. a rotating part; 8. a second back plate; 9. folding the connecting sleeve; 10. a bearing; 11. positioning holes; 12. a trapezoidal positioning buckle; 13. a pull rod; 14. a through hole; 15. turning a handle; 16. a return spring; 17. coating a silica gel coat; 18. a base; 19. a turntable; 20. fastening a knob; 21. a telescopic groove; 22. an air-filled bag; 23. a sponge bulge; 24. an air charging nozzle; 25. a base plate.

Detailed Description

The following describes the present invention in further detail with reference to fig. 1-5.

The first embodiment is given by fig. 1, fig. 2 and fig. 3, the present invention provides the following technical solutions: a foldable wheelchair backrest comprises a support column 1, wherein the support column 1 is fixed on two corresponding sides of a first back plate 2 through connecting pieces, an air cushion assembly 3 is movably connected inside the first back plate 2, the top of the support column 1 is movably connected with a connecting column 5 through a folding part 4, the connecting column 5 is fixed on two corresponding sides of a second back plate 8 through connecting pieces, and the top of the connecting column 5 is movably connected with a handle 6 through a rotating part 7;

the folding part 4 comprises a folding connecting sleeve 9, a bearing 10, a positioning hole 11, a trapezoid positioning buckle 12, a pull rod 13, a through hole 14, a rotary handle 15 and a return spring 16, the top of the strut 1 is rotatably connected with the folding connecting sleeve 9 through the bearing 10, the top of the folding connecting sleeve 9 is fixedly welded with a connecting column 5, the strut 1 is provided with the positioning hole 11 inside the folding connecting sleeve 9, one side of the folding connecting sleeve 9 is provided with the through hole 14, the through hole 14 penetrates through the pull rod 13, the top end of the pull rod 13 is fixedly welded with the trapezoid positioning buckle 12 matched with the positioning hole 11, the bottom end of the pull rod 13 is fixedly provided with the rotary handle 15 through a bolt, the pull rod 13 is fixedly sleeved between the through hole 14 and the rotary handle 15 and is provided with the return spring 16, when the strut 1 and the connecting column 5 are required to be folded, the rotary handle 15 is rotated to, the part of the trapezoidal positioning buckle 12 hooked around the positioning hole 11 is separated from the positioning hole 11, then the rotating handle 15 is pulled, the pull rod 13 drives the trapezoidal positioning buckle 12 to be separated from the positioning hole 11, the support column 1 and the connecting column 5 can be folded, otherwise, the rapid assembly can be carried out, the size of the packaging box can be effectively reduced, and the transportation cost is reduced.

Embodiment two, on the basis of embodiment one, as shown in fig. 1 and 4, the rotating part 7 includes a base 18, a rotary disc 19 and a fastening knob 20, the base 18 is fixed on the top of the connecting column 5 by welding, the rotary disc 19 is rotatably connected inside the base 18, the rotary disc 19 is fixed with the base 18 by the fastening knob 20 on the base 18, the handle 6 is fixed on the top of the rotary disc 19 by welding, when the handle 6 needs to be folded, the fastening knob 20 is unscrewed, the rotary disc 19 can rotate inside the base 18, the angle between the handle 6 and the connecting column 5 can be adjusted, the size of the packing box can be effectively reduced, and the transportation cost can be reduced.

Third embodiment, on the basis of second embodiment, the cup joint is fixed with the protection rubber sleeve on handle 6, promotes handheld comfort level.

In the fourth embodiment, based on the first embodiment, as shown in fig. 1 and 5, the air cushion assembly 3 includes a silicone sleeve 17, a flexible slot 21, an air bag 22, a sponge protrusion 23, an air nozzle 24, and a bottom plate 25, the flexible slot 21 is formed at the top of the first back plate 2, the air bag 22 is fixed at the bottom of the flexible slot 21 by adhesion, an inflation nozzle 24 penetrating through the first back plate 2 is arranged on the inflation bag 22, a bottom plate 25 is fixedly bonded on the top of the inflation bag 22, a silica gel coat 17 is fixedly sleeved on the outer side of the bottom plate 25, a plurality of sponge bulges 23 are arranged on the top of the silica gel coat 17 at equal intervals, is connected with external inflation equipment through an inflation nozzle 24 to inflate the inflatable bag 22, so that the inflatable bag 22 is inflated and expanded, thereby can make by the outstanding flexible groove 21 of bottom plate 25 of silica gel overcoat 17 parcel, be convenient for play the effect of support to patient's back, can effectually promote the comfort level that the patient took.

In the fifth embodiment, on the basis of the first embodiment, as shown in fig. 1, the second backboard 8 is connected with the first backboard 2 through a hinge.

The utility model discloses during the use, when needing to fold pillar 1 and spliced pole 5, through rotating swing handle 15, drive pull rod 13 and rotate, thereby drive trapezoidal location knot 12 and rotate, make trapezoidal location knot 12 hook part around locating hole 11 break away from locating hole 11, then stimulate swing handle 15, make pull rod 13 drive trapezoidal location knot 12 and break away from locating hole 11, both can carry out the folding of pillar 1 and spliced pole 5, otherwise both can carry out fast assembly, can effectually reduce the packing box size, reduce the cost of transportation;

when the handle 6 needs to be folded, the fastening knob 20 is unscrewed, so that the turntable 19 can rotate in the base 18, the angle between the handle 6 and the connecting column 5 can be adjusted, the size of the packaging box can be effectively reduced, and the transportation cost is reduced;

connect outside inflation equipment through charging connector 24, aerify for gas cell 22, make gas cell 22 aerify the inflation to can make by the outstanding flexible groove 21 of bottom plate 25 of silica gel overcoat 17 parcel, be convenient for play the effect of support to patient's back, comfort level that can effectual promotion patient took.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A foldable wheelchair backrest comprises a strut (1) and is characterized in that the strut (1) is fixed on two corresponding sides of a first back plate (2) through connecting pieces, an air cushion assembly (3) is movably connected inside the first back plate (2), the top of the strut (1) is movably connected with a connecting column (5) through a folding part (4), the connecting column (5) is fixed on two corresponding sides of a second back plate (8) through connecting pieces, and the top of the connecting column (5) is movably connected with a handle (6) through a rotating part (7);

folding portion (4) are including folding adapter sleeve (9), bearing (10), locating hole (11), trapezoidal location knot (12), pull rod (13), through-hole (14), swing handle (15) and reset spring (16), the top of pillar (1) is passed through bearing (10) and is rotated and be connected with folding adapter sleeve (9), the top welded fastening of folding adapter sleeve (9) has spliced pole (5), locating hole (11) have been seted up to the inside that lies in folding adapter sleeve (9) on pillar (1), through-hole (14) have been seted up to one side of folding adapter sleeve (9), the inside of through-hole (14) is passed there is pull rod (13), the top welded fastening of pull rod (13) has trapezoidal location knot (12) that uses with locating hole (11) cooperation, the bottom of pull rod (13) has swing handle (15) through the bolt fastening, it is fixed with reset spring (16) to cup joint between through-hole (14) and swing handle (15) on pull rod (13) .

2. A foldable wheelchair backrest as claimed in claim 1, characterized in that the rotary part (7) comprises a base (18), a turntable (19) and a fastening knob (20), the base (18) is fixed on the top of the connection column (5) by welding, the turntable (19) is rotatably connected inside the base (18), the turntable (19) and the base (18) are fixed by the fastening knob (20) on the base (18), and the handle (6) is fixed on the top of the turntable (19) by welding.

3. The foldable wheelchair backrest as claimed in claim 2, wherein a protective rubber sleeve is fixed on the handle (6).

4. The foldable wheelchair backrest as claimed in claim 1, wherein the air cushion assembly (3) comprises a silica gel outer sleeve (17), a telescopic groove (21), an inflatable bag (22), sponge protrusions (23), an inflation nozzle (24) and a bottom plate (25), the top of the first back plate (2) is arranged in the telescopic groove (21), the bottom of the telescopic groove (21) is fixedly provided with the inflatable bag (22) through bonding, the inflatable bag (22) is provided with the inflation nozzle (24) penetrating through the first back plate (2), the top of the inflatable bag (22) is fixedly provided with the bottom plate (25) through bonding, the outer side of the bottom plate (25) is fixedly provided with the silica gel outer sleeve (17), and the top of the silica gel outer sleeve (17) is provided with the sponge protrusions (23) in a plurality of equal distances.

5. A foldable wheelchair backrest according to claim 1, characterised in that the second back plate (8) is hinged to the first back plate (2).

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