CN214104933U

CN214104933U - Folding wheelchair

Info

Publication number: CN214104933U
Application number: CN202022527010.4U
Authority: CN
Inventors: 廖鹏; 王建文; 王刚
Original assignee: Foshan Shunkangda Medical Technology Co ltd
Current assignee: Foshan Shunkangda Medical Technology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-09-03
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a folding wheelchair, this folding wheelchair includes the front wheel dead lever, the rear wheel dead lever, the front beam, the back beam, the seat support, the back support, the after-poppet, buckle subassembly and push rod, the rear wheel dead lever top is rotated and is connected on front wheel dead lever top, push rod one end is rotated with the front beam and is connected, the other end rotates with back support bottom and back support top and is connected, the after-poppet is fixed in on the back beam, the buckle subassembly include elasticity bolt and with the stationary blade of elasticity bolt cooperation effect take the through-hole, elasticity bolt is fixed in the after-poppet top, the stationary blade of taking the through-hole is fixed in the back support bottom, the seat support rear end rotates with the back support side and is connected, front end and front wheel dead lever top fixed connection. Through such structural design, promote the folding of back support drive push rod pulling whole frame forward, folding easy operation is convenient, and folding back whole frame volume can reach the minimizing moreover, has greatly improved the practicality and the portability of wheelchair.

Description

Folding wheelchair

Technical Field

The utility model relates to a rehabilitation apparatus technical field, concretely relates to folding wheelchair.

Background

To the handicapped people, the wheelchair is its main vehicle of going on a journey or activity, and in order to save occupation space, many wheelchairs among the prior art have all been designed into folded cascade, but current folding structure all has the folding inconvenient problem inadequately, perhaps the whole volume after folding is little inadequately, and to the user, its own handicapped, it needs other people's help just can accomplish to fold. Therefore, there is a need for an improvement of the folding structure of the existing folding wheelchair, so that the user can complete the folding work by himself, and the folded volume is minimized.

Disclosure of Invention

To the technical problem, the utility model provides a folding wheelchair can effectively solve the folding inconvenient and folding back volume of current beta structure and can not reach minimum technical problem.

In order to solve the technical problem, the utility model discloses a technical scheme be: provides a folding wheelchair, which comprises two front wheel fixing rods fixed with front wheels, two rear wheel fixing rods fixed with rear wheels, a front cross beam, a rear cross beam, a seat support, a backrest support, a rear support, a buckle assembly and a push rod, wherein the front cross beam is connected with the two front wheel fixing rods, the rear cross beam is connected with the two rear wheel fixing rods, the top ends of the rear wheel fixing rods are rotatably connected onto the top ends of the front wheel fixing rods, one end of the push rod is rotatably connected with the front cross beam, the other end of the push rod is rotatably connected with the bottom end of the backrest support and the top end of the rear support, the rear support is fixed on the rear cross beam, the buckle assembly comprises an elastic bolt and a fixing sheet with a through hole, the elastic bolt is fixed at the top end of the rear support, the fixing sheet with the through hole is fixed at the bottom end of the backrest support, the rear end of the seat support is rotatably connected with the side edge of the backrest support, and the front end of the seat support is fixedly connected with the top of the front wheel fixing rod.

The other end of the push rod is hinged with two rotary connecting pieces which are overlapped in a staggered mode through the same hinged point, the other end of one rotary connecting piece is rotatably connected with the bottom end of the backrest support, and the other end of the rotary connecting piece is rotatably connected with the top end of the rear support.

The buckle assembly further comprises a bolt seat, the elastic bolt is fixed in the bolt seat, and the bolt seat is fixed at the top of the rear support.

The elastic bolt comprises an expansion spring, a bolt and an operation driving lever, one end of the expansion spring is abutted to the inner wall of the bolt seat, the other end of the expansion spring is abutted to one end of the bolt, one end of the operation driving lever is vertically and fixedly connected with the bolt, and the other end of the operation driving lever penetrates through a through hole in the bolt seat to be exposed so as to drive the bolt to be separated from the fixing piece through the operation driving lever.

The front wheel fixing rod and the rear wheel fixing rod are arc-shaped fixing rods.

The backrest support is rotatably connected with a handrail rod, and the handrail rod is provided with handrails.

Wherein, the top end of the backrest bracket extends backwards to form a push-and-hold rod.

Wherein, be provided with the cushion on the seat support, be provided with the back on the back support.

The folding wheelchair further comprises a pedal plate, and the pedal plate is rotatably connected to the outer side of the front cross beam through a connecting rod.

The utility model has the advantages that: be different from prior art's condition, the embodiment of the utility model provides a folding wheelchair, this folding wheelchair includes the front wheel dead lever, the rear wheel dead lever, the front beam, the back beam, the seat support, the back support, the after-poppet, buckle subassembly and push rod, the rear wheel dead lever top is rotated and is connected on the front wheel dead lever top, push rod one end is rotated with the front beam and is connected, the other end rotates with back support bottom and after-poppet top to be connected, the after-poppet is fixed in on the back beam, the buckle subassembly include elasticity bolt and with the stationary blade of elasticity bolt mating reaction's band-pass hole, the elasticity bolt is fixed in the after-poppet top, the stationary blade of band-pass hole is fixed in back support bottom, the seat support rear end rotates with back support side and is connected, front end and front wheel dead lever top fixed connection. Through such structural design, promote the folding of back support drive push rod pulling whole frame forward, folding easy operation is convenient, and folding back whole frame volume can reach the minimizing moreover, has greatly improved the practicality and the portability of wheelchair.

Drawings

FIG. 1 is a first perspective view of the overall structure of a foldable wheelchair according to an embodiment of the present invention;

FIG. 2 is a second perspective view of the overall structure of the foldable wheelchair according to the embodiment of the present invention;

FIG. 3 is a schematic view of the foldable wheelchair in an initial folded state according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a folded state of the foldable wheelchair according to the embodiment of the present invention;

fig. 5 is an enlarged schematic view of a part of a buckle assembly provided in an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a buckle assembly provided by an embodiment of the present invention;

fig. 7 is a front view of a buckle assembly provided by an embodiment of the present invention;

fig. 8 is a side view of a buckle assembly provided by an embodiment of the present invention.

The reference numbers in the figures illustrate: 1. a front wheel fixing rod; 2. a rear wheel fixing rod; 3. a front cross member; 4. a rear cross member; 5. a seat support; 6. a backrest support; 7. a rear bracket; 8. a buckle assembly; 9. a push rod; 81. an elastic bolt; 82. a fixing piece with a through hole; 83. a bolt seat; 811. a tension spring; 812. a bolt; 813. operating a deflector rod; 831. a notch; 832. a chute; 833. a threaded through hole; 834. an inner concave arc-shaped surface; 10. rotating the connecting sheet; 11. a grab rail; 12. a handrail; 13. pushing the holding rod; 14. a cushion; 15. a foot pedal; 16. a connecting rod; 17. a front wheel; 18. a rear wheel; 19. a backrest.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1-8 are schematic structural views of the foldable wheelchair and its components, and the technical solution of the present invention will be described in detail with reference to the drawings.

Referring to fig. 1-8, as shown in the figures, the embodiment of the present invention provides a foldable wheelchair, the whole structure of which includes two front wheel fixing rods 1 fixed with front wheels 17, two rear wheel fixing rods 2 fixed with rear wheels 18, a front cross member 3, a rear cross member 4, a seat support 5, a backrest support 6, a rear support 7, a buckle assembly 8 and a push rod 9, the front cross member 3 connects the two front wheel fixing rods 1, the rear cross member 4 connects the two rear wheel fixing rods 2, the top end of the rear wheel fixing rod 2 is rotatably connected to the top end of the front wheel fixing rod 1, one end of the push rod 9 is rotatably connected to the front cross member 2, the other end is rotatably connected to the bottom end of the backrest support 6 and the top end of the rear support 7, the rear support 7 is fixed to the rear cross member 4, the buckle assembly 8 includes an elastic bolt 81 and a fixing plate 82 with a through hole cooperating with the elastic bolt 81, the elastic bolt, the fixing sheet 82 with the through hole is fixed at the bottom end of the backrest support 6, the rear end of the seat support 5 is rotatably connected with the side edge of the backrest support 6, and the front end of the seat support is fixedly connected with the top of the front wheel fixing rod 1.

The utility model provides a buckle subassembly, through the stationary blade mating reaction of elasticity bolt and band-pass hole, when folding wheelchair show, the elasticity bolt inserts in the through-hole of stationary blade to it is fixed to realize the connection of back support and after-poppet. So that the whole frame of the unfolded folding wheelchair is stably supported. When the wheelchair needs to be folded, the elastic bolt is pulled to be separated from the through hole of the fixing piece, so that the connection between the backrest support and the rear support is loosened, the backrest support can be folded forwards, the push rod is driven to stretch, and then the whole frame is driven to be folded forwards, and the wheelchair is simple and convenient to operate.

In a possible implementation manner, the other end of the push rod 9 is hinged with two rotating connecting pieces 10 which are overlapped in a staggered manner at the same hinge point, wherein the other end of one rotating connecting piece 10 is rotatably connected with the bottom end of the backrest support 6, and the other rotating connecting piece is rotatably connected with the top end of the rear support 7. Connect through two rotation connection pieces to make the extension of push rod can drive the rotor to rotate, thereby make back support and after-poppet all can be equivalent to buckle subassembly and fold forward. Furthermore, the connecting sheet can be designed into an arc shape, and the arc concave surface faces the extending direction of the rear end of the push rod, so that the rotating and folding are convenient in the rotating process.

In a possible implementation manner, the buckle assembly 8 further includes a pin seat 83, the elastic pin 81 is fixed in the pin seat 83, a notch 831 for embedding the fixing piece is formed in the pin seat, and the pin seat 83 is fixed on the top of the rear bracket 7.

Wherein, in a possible implementation, elastic bolt 81 includes expanding spring 811, bolt 812 and operating lever 813, expanding spring 811 one end butt bolt seat 83 inner wall, the other end and bolt 812 one end butt, the perpendicular fixed connection of bolt 812 in the spout 832 on the bolt seat 83 and the bolt seat is passed to operating lever 813 one end, spout 832 is oval to middle part horizontal stretching respectively, the other end passes the through-hole on the bolt seat 83 and exposes to stir the stationary blade 82 that drives bolt 812 and break away from the band-pass hole through operating lever 813.

The sliding grooves are respectively horizontally stretched towards the middle part to form a certain distance for the operating deflector rod to respectively slide towards the middle part relatively, and the bolt is driven to be separated from the through hole on the fixing piece, so that the locking is released.

As shown in FIG. 6, when the two levers are released by hand as indicated by the arrow A, the latch is pushed to pass through the through hole of the fixing plate and then to be coupled to the fixing plate by the action of the internal extension spring. Realize the combination of back support and after-poppet, when as B arrow point direction indication, inwards press the operation driving lever, drive the bolt and break away from the through-hole of stationary blade to make back support and after-poppet want to break away from to realize folding.

The elastic force applied to the bolt by the telescopic spring enables the bolt to be inserted into the through hole of the fixed plate outwards, and the bolt can be driven to move in the opposite direction relative to the fixed plate by operating the deflector rod so as to be separated from the through hole of the fixed plate, so that the backrest support can rotate relatively.

Further, the upper surface and the lower surface of the pin seat 83 are respectively concave arc-shaped surfaces 833. Through the arrangement of the concave arc-shaped surface, the pin seat can be conveniently fixed on the circular tubular component, so that the pin seat is more attached to the contact surface of the component, and the fixing stability is improved. And can be rotated about the tubular member to achieve fixation at different angles.

Furthermore, the upper surface of the pin base 83 is provided with a threaded through hole 834 through which a screw passes to lock the screw, so that the pin base is fixed on a component.

Wherein, in a possible implementation manner, the front wheel fixing rod 1 and the rear wheel fixing rod 2 are arc-shaped fixing rods. The concave surface of the front wheel arc-shaped fixed rod faces the rear wheel, and the concave surface of the rear wheel arc-shaped fixed rod faces the front wheel. By the design of the arc-shaped fixing rod, the front wheel fixing rod and the rear wheel fixing rod can be more easily folded backwards when the wheelchair is folded.

Wherein, in a possible realization mode, a handrail rod 11 is rotatably connected on the backrest support 6, and a handrail 12 is arranged on the handrail rod 11.

Wherein, in a possible realization, the top end of the backrest bracket 6 extends backwards to form a push-grip rod 13. The holding rod can be pushed to facilitate the wheelchair pushing of the caregiver. When the wheelchair needs to be folded, the frame is driven to be folded forwards by pushing the push-hold rod after the buckle assembly is loosened.

Wherein, a cushion 14 is arranged on the seat bracket 5, and a backrest 19 is arranged on the backrest bracket 6. To make the user more comfortable to sit on, both the seat cushion and the backrest may be sponge elastic.

Wherein, the folding wheelchair also comprises a pedal plate 15, and the pedal plate 15 is rotatably connected with the outer side of the front beam 3 through a connecting rod 16. The arrangement of the pedals can facilitate the placement of feet of a user, and the pedals are connected in a rotating mode, so that the pedals can be further folded along with the rotation when the wheelchair is folded, and the volume of the folded space is reduced.

Above combine the utility model discloses the drawing is right the utility model discloses a folding wheelchair carries out the detailed description, can understand, folding wheelchair includes the front wheel dead lever, the rear wheel dead lever, the front beam, the rear beam, the seat support, the back support, the after-poppet, buckle subassembly and push rod, the rear wheel dead lever top is rotated and is connected on front wheel dead lever top, push rod one end is rotated with the front beam and is connected, the other end rotates with back support bottom and after-poppet top to be connected, the after-poppet is fixed in on the rear beam, the buckle subassembly include elasticity bolt and with the stationary blade of elasticity bolt cooperation effect band-pass hole, the elasticity bolt is fixed in the after-poppet top, the stationary blade of band-pass hole is fixed in back support bottom, the seat support rear end rotates with back support side and is connected, front end and front wheel dead lever top fixed connection. Through such structural design, promote the folding of back support drive push rod pulling whole frame forward, folding easy operation is convenient, and folding back whole frame volume can reach the minimizing moreover, has greatly improved the practicality and the portability of wheelchair.

Wherein, the pedals and the armrests are rotatably connected, and the folding wheelchair can be folded along with the rotation when being folded.

Wherein, the utility model discloses a buckle subassembly through flexible bolt and band-pass hole stationary blade mating reaction, realizes the fixed connection after the frame expandes, and the pine that needs when folding up takes off convenient operation is simple.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A folding wheelchair is characterized by comprising two front wheel fixing rods, two rear wheel fixing rods, a front cross beam, a rear cross beam, a seat support, a backrest support, a rear support, a buckle assembly and a push rod, wherein the front wheel fixing rods are fixed with front wheels, the rear wheel fixing rods are fixed with rear wheels, the front cross beam is connected with the two front wheel fixing rods, the rear cross beam is connected with the two rear wheel fixing rods, the top ends of the rear wheel fixing rods are rotatably connected onto the top ends of the front wheel fixing rods, one end of the push rod is rotatably connected with the front cross beam, the other end of the push rod is rotatably connected with the bottom end of the backrest support and the top end of the rear support, the rear support is fixed on the rear cross beam, the buckle assembly comprises an elastic bolt and a fixing sheet with a through hole, the elastic bolt is fixed on the top end of the rear support, the fixing sheet with the through hole is fixed, the rear end of the seat support is rotatably connected with the side edge of the backrest support, and the front end of the seat support is fixedly connected with the top of the front wheel fixing rod.

2. The folding wheelchair as claimed in claim 1, wherein the push rod is hinged at the other end thereof to two rotation connecting pieces which are overlapped in a staggered manner at the same hinge point, wherein one of the rotation connecting pieces is rotatably connected at the other end thereof to the bottom end of the backrest support, and the other of the rotation connecting pieces is rotatably connected at the other end thereof to the top end of the rear support.

3. The foldable wheelchair as claimed in claim 1, wherein the latch assembly further comprises a latch seat, the elastic latch is fixed in the latch seat, the latch seat is provided with a notch for the fixing piece to be embedded in, and the latch seat is fixed on the top of the rear bracket.

4. The foldable wheelchair as claimed in claim 3, wherein the elastic bolt comprises a telescopic spring, a bolt and an operating lever, one end of the telescopic spring abuts against the inner wall of the bolt seat, the other end of the telescopic spring abuts against one end of the bolt, one end of the operating lever passes through a sliding groove on the bolt seat and is vertically and fixedly connected with the bolt in the bolt seat, the sliding grooves are respectively horizontally stretched towards the middle part to form an oval shape, and the other end of the operating lever passes through a through hole on the bolt seat and is exposed out, so that the bolt is driven to be separated from the fixing piece by the operating lever.

5. The folding wheelchair as claimed in claim 1, wherein the front wheel-fixing lever and the rear wheel-fixing lever are circular arc-shaped fixing levers.

6. The folding wheelchair as claimed in claim 1, wherein a grab bar is rotatably connected to the backrest support, and a grab bar is provided with a grab rail.

7. The folding wheelchair as claimed in claim 6, wherein the back rest support is formed with a push grip rod extending rearwardly from a top end thereof.

8. A folding wheelchair in accordance with claim 1 wherein a seat cushion is provided on said seat support and a back rest is provided on said back support.

9. The folding wheelchair as claimed in claim 1, further comprising a footboard pivotally connected to an outer side of the front cross member by a link.