CN209790222U

CN209790222U - Liftable folding wheelchair

Info

Publication number: CN209790222U
Application number: CN201920167564.2U
Authority: CN
Inventors: 吴小勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2019-12-17
Anticipated expiration: 2029-01-29

Abstract

The utility model relates to the field of medical appliances, in particular to a liftable folding wheelchair, a bearing frame and a first connecting rod are rotatably arranged on a bottom frame, a stirring piece is rotatably arranged on the bearing frame and is rotatably connected with the first connecting rod, so that the bearing frame, the underframe, the first connecting rod and the toggle piece form an inverse parallelogram mechanism, the guide mechanism is rotationally connected with the front part of the underframe, the front part of the bearing frame is provided with a second connecting rod which is rotationally connected with the guide mechanism, when the poking piece is forced to swing by force, the bearing frame rotates relative to the underframe and lifts the rear part of the riding part, meanwhile, the bearing frame drives the second connecting rod to swing, the guide mechanism rotates relative to the bottom frame under the driving of the second connecting rod, the guide mechanism jacks up the front part of the bottom frame, thereby raising the height of the front part of the riding component and realizing the overall height lifting of the riding component.

Description

Liftable folding wheelchair

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a liftable folding wheelchair.

background

the wheelchair is a chair provided with wheels, is an important moving tool for the rehabilitation, turnover transportation, treatment and outgoing activities of wounded, patients and disabled at home, not only meets the requirements of physically disabled people 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. At present, most wheelchairs are fixed in height, and patients cannot independently process affairs due to the height limitation of the wheelchairs, for example, the patients cannot independently take articles placed at a high position. Certainly, in the market, a motor system is additionally arranged on part of wheelchairs, and the height of the wheelchairs is lifted by the driving of the motors, however, in the prior art, the weight of the motors and the batteries still cannot meet the requirement on the portability of the wheelchairs.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide a liftable folding wheelchair to solve the problem that the existing wheelchair can not take into account portability and liftable functions.

Based on the above, the utility model provides a liftable folding wheelchair, which comprises a bearing frame, a sitting part arranged on the bearing frame, a bottom frame, a guide mechanism rotationally connected to the front part of the bottom frame and a driving wheel arranged at the rear part of the bottom frame; the bearing frame is rotationally connected to the front part of the bottom frame, the rear part of the bottom frame is rotationally provided with a first connecting rod, the bearing frame is rotationally provided with a poking piece, one end of the poking piece is rotationally connected to the free end of the first connecting rod, and the bearing frame, the bottom frame, the first connecting rod and the poking piece form an inverse parallelogram mechanism; the front part of the bearing frame is provided with a second connecting rod which is rotatably connected with the guide mechanism, and the guide mechanism is provided with a guide wheel.

Preferably, the device further comprises a buffer cylinder, one end of the buffer cylinder is connected to the base frame, and the other end of the buffer cylinder is connected to the bearing frame.

preferably, the device further comprises a third connecting rod, and two ends of the third connecting rod are respectively and rotatably connected to the guide mechanism and the underframe.

Preferably, the poking piece is fixedly connected with a handle in an arc structure.

Preferably, the armrest of the wheelchair is fixedly connected to the toggle piece.

Preferably, the limiting mechanism comprises a limiting part which is rotatably connected with the bearing frame and a limiting block which is arranged at the joint of the first connecting rod and the stirring part, two limiting arms which are rotatably connected with the limiting part and are arranged in a V shape are arranged on the limiting part, and the limiting block is movably embedded between the two limiting arms.

Preferably, through holes are formed in the free ends of the two limiting arms, and fasteners penetrate through the through holes.

Preferably, the bearing frame comprises a first bearing part and a second bearing part which are arranged at two sides of the wheelchair in parallel, a first inclined rod is rotatably arranged on the first bearing part, and a second inclined rod is rotatably arranged on the second bearing part; the riding component comprises a first bearing rod detachably connected to the first bearing part and a second bearing rod detachably connected to the second bearing part, the free end of the first inclined rod is connected to the second bearing rod, the free end of the second inclined rod is connected to the first bearing rod, and the first inclined rod and the second inclined rod are rotatably connected.

preferably, the bearing frame further comprises a first stabilizer bar rotatably connected to the first bearing part and a second stabilizer bar rotatably connected to the second bearing part, and a free end of the first stabilizer bar and a free end of the second stabilizer bar are rotatably connected.

Preferably, the chassis is provided with a tilting prevention mechanism extending towards the rear part of the chassis, and the tail end of the tilting prevention mechanism is provided with a tilting prevention wheel.

The utility model discloses a liftable folding wheelchair, the chassis is rotationally equipped with bearing frame and first connecting rod, the bearing frame is rotationally equipped with the stirring piece, stirring piece and first connecting rod are rotationally connected, make bearing frame, chassis, first connecting rod and stirring piece form the anti-parallelogram mechanism, guiding mechanism rotates and connects in the front portion of chassis, and the front portion of bearing frame is equipped with the second connecting rod that rotates and connects in guiding mechanism, when the stirring piece is forced to swing by the application of force, bearing frame rotates and makes the rear portion of sitting part lift up relative to the chassis, meanwhile, bearing frame drives the swing of second connecting rod, guiding mechanism rotates relative to the chassis under the drive of second connecting rod, guiding mechanism jacks up the front portion of chassis, and then makes the height of the front portion of sitting part rise, realize the whole height promotion of sitting part, this wheelchair can be operated by the patient with the height of wheelchair of lifting under the circumstances of guaranteeing its portability, the requirement that the patient independently takes the articles at the high place is met.

Drawings

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

FIG. 2 is a schematic side view of a foldable wheelchair according to an embodiment of the present invention;

FIG. 3 is a schematic view of a front part of a foldable wheelchair according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a part of the foldable wheelchair according to the embodiment of the present invention;

FIG. 5 is a schematic view of a position-limiting mechanism of the liftable and foldable wheelchair according to the embodiment of the present invention;

FIG. 6 is a schematic front view of a foldable wheelchair capable of ascending and descending according to an embodiment of the present invention;

FIG. 7 is a schematic view of a front view of a part of a foldable wheelchair according to an embodiment of the present invention;

FIG. 8 is a schematic bottom perspective view of the foldable wheelchair according to the embodiment of the present invention;

FIG. 9 is a schematic view of a bottom part of a foldable wheelchair according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a second supporting portion of the foldable wheelchair according to the embodiment of the present invention;

Fig. 11 is a schematic view of a partial structure of a limiting mechanism of a liftable and foldable wheelchair according to an embodiment of the present invention.

Wherein, 1, a chassis; 11. a first link; 12. an anti-fall mechanism; 121. an anti-falling wheel; 2. a carrier; 21. a toggle piece; 211. a grip; 22. a second link; 23. a first bearing part; 231. a first diagonal member; 232. a first stabilizer bar; 24. a second bearing part; 241. a second diagonal member; 242. a second stabilizer bar; 3. a seating component; 31. a first carrier bar; 32. a second carrier bar; 33. a seat plate; 4. a guide mechanism; 41. a guide wheel; 5. a driving wheel; 6. a buffer cylinder; 7. a third link; 8. a handrail; 9. a limiting mechanism; 91. a limiting member; 92. a limiting block; 93. a limiting arm; 931. and a through hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 11, a foldable wheelchair of the present invention is schematically shown, which comprises a frame 2, a seat member 3, a bottom frame 1, a guide mechanism 4 and a driving wheel 5. As shown in fig. 1 to 4, the sitting portion 3 is for sitting on a patient, and the sitting portion 3 is mounted on the carriage 2. The guide mechanism 4 is rotatably connected to the front portion of the chassis 1, and a guide wheel 41 is rotatably provided on the guide mechanism 4. The driving wheel 5 is detachably arranged at the rear part of the bottom frame 1, and a hand rim is arranged on the driving wheel 5, so that the patient can drive the driving wheel 5 to rotate by using the upper limbs. The front part of the bearing frame 2 is rotatably connected with the front part of the base frame 1, the rear part of the base frame 1 is rotatably provided with a first connecting rod 11, the bearing frame 2 is rotatably provided with a toggle piece 21, and the free end of the toggle piece 21 is rotatably connected with the free end of the first connecting rod 11, so that the bearing frame 2, the base frame 1, the first connecting rod 11 and the toggle piece 21 form an inverse parallelogram mechanism. The front part of the carriage 2 is fixedly provided with a second link 22, the end of the second link 22 being pivotally connected to the guide mechanism 4. The patient can move the toggle member 21 by applying force to force the toggle member 21 to swing, so as to rotate the carrier frame 2 relative to the base frame 1, it can be understood that at this time, the rear portion of the carrier frame 2 swings and tilts, the rear portion of the sitting member 3 also tilts along with the swinging of the carrier frame 2, meanwhile, the second connecting rod 22 swings along with the swinging of the carrier frame 2, the guide mechanism 4 rotates relative to the base frame 1 under the driving of the second connecting rod 22, the guide mechanism 4 moves towards the bottom direction of the base frame 1 to jack up the front portion of the base frame 1, which can cause the height of the front portion of the sitting member 3 to rise, and finally, the whole height of the sitting member 3 is lifted. The wheelchair can be independently operated by a patient to lift the riding height of the wheelchair under the condition of ensuring the portability of the wheelchair, and the requirement that the patient independently takes high articles is met.

Specifically, the wheelchair further comprises a buffer cylinder 6, a third connecting rod 7 and a limiting mechanism 9. The buffer cylinder 6 is filled with compressed air, one end of the buffer cylinder 6 is rotatably connected to the base frame 1, and the other end of the buffer cylinder 6 is rotatably connected to the bearing frame 2, so that the bearing frame 2 is ensured to have buffering when falling back to the base frame 1 under the action of gravity. Two ends of the third connecting rod 7 are respectively connected with the guide mechanism 4 and the underframe 1 in a rotating way. As shown in fig. 5 and 11, the limiting mechanism 9 includes a limiting member 91 rotatably connected to the supporting frame 2 and a limiting member 92 disposed at a joint of the first link 11 and the toggle member 21, two limiting arms 93 rotatably connected to the limiting member 91 and arranged in a V-shape are disposed on the limiting member 91, an included angle between the two limiting arms 93 is adjustable, the limiting member 92 is movably embedded between the two limiting arms 93, through holes 931 are disposed at free ends of the limiting arms 93, fasteners are disposed through the through holes 931, the fasteners are preferably bolts and nuts that are matched with each other, the included angles of the two limiting arms 93 can be adjusted by adjusting the bolts and the nuts, and further the swing angle of the toggle member 21 (or the swing amplitude of the toggle member 21) is limited, so as to limit the lifting height of the sitting member 3, and adapt to the personalized setting of the patient.

In some optional embodiments, the toggle member 21 is fixedly connected with a handle 211 having a circular arc structure, and the handle 211 can facilitate the patient to apply force to swing the toggle member 21.

In some alternative embodiments, the armrest 8 of the wheelchair is fixedly connected to the toggle member 21, and the patient only needs to press the armrest 8 to force the toggle member 21 to swing.

As shown in fig. 2, 7, 8 and 10, the carriage 2 includes a first bearing portion 23 and a second bearing portion 24 disposed in parallel on both sides of the wheelchair, a first diagonal bar 231 is rotatably provided on an inner side of the first bearing portion 23, and a second diagonal bar 241 is rotatably provided on an inner side of the second bearing portion 24. It is understood that the number of the toggle members 21 and the second connecting rods 22 is two, one of the toggle members 21 and one of the second connecting rods 22 are disposed on the first bearing portion 23, and the other toggle member 21 and the other second connecting rod 22 are disposed on the second bearing portion 24. Of course, the number of the base frames 1 is also two, and the two base frames 1 are respectively connected to the first bearing part 23 and the second bearing part 24. The sitting part 3 comprises a first carrier bar 31 detachably connected to the first carrier part 23, a second carrier bar 32 detachably connected to the second carrier part 24, and a seat plate 33 erected on the first carrier bar 31 and the second carrier bar 32, the seat plate 33 being used for sitting of the patient, of course, the seat plate 33 is detachable from the first carrier bar 31 and the second carrier bar 32. The first bearing rod 31 and the second bearing rod 32 are arranged in parallel, the top parts of the first bearing part 23 and the second bearing part 24 are respectively provided with a positioning clamp in a C-shaped structure, the first bearing rod 31 is detachably connected to the positioning clamp of the first bearing part 23, and the second bearing rod 32 is detachably connected to the positioning clamp of the second bearing part 24. As shown in fig. 6 and 7, the free end of the first inclined rod 231 is connected to the second bearing rod 32, the free end of the second inclined rod 241 is connected to the first bearing rod 31, and the first inclined rod 231 and the second inclined rod 241 are rotatably connected such that the first inclined rod 231 and the second inclined rod 241 are arranged in an X-shape. The bearing frame 2 with the structure can realize the folding of the wheelchair in the horizontal direction, so as to reduce the space occupation of the wheelchair in a transportation scene and improve the portability of the wheelchair. In order to improve the stability of the wheelchair and prevent the wheelchair from being accidentally deformed or accidentally swung during use, the frame 2 further includes a first stabilizer bar 232 rotatably connected to the first bearing portion 23 and a second stabilizer bar 242 rotatably connected to the second bearing portion 24, and a free end of the first stabilizer bar 232 and a free end of the second stabilizer bar 242 are rotatably connected.

in addition, the chassis 1 is provided with a tilting prevention mechanism 12 extending towards the rear part thereof, the tail end of the tilting prevention mechanism 12 is provided with a tilting prevention wheel 121, the tilting prevention wheel 121 and the tilting prevention mechanism 12 can not only prevent the wheelchair from tilting backwards, but also balance the wheelchair after the driving wheel 5 is detached, and prevent the chassis 1 of the wheelchair from being worn due to contact with the ground.

To sum up, the liftable foldable wheelchair of the present invention comprises a chassis 1 rotatably provided with a bearing frame 2 and a first connecting rod 11, the bearing frame 2 rotatably provided with a toggle member 21, the toggle member 21 rotatably connected with the first connecting rod 11, so that the bearing frame 2, the chassis 1, the first connecting rod 11 and the toggle member 21 form an inverse parallelogram mechanism, a guide mechanism 4 rotatably connected to the front portion of the chassis 1, and the front portion of the bearing frame 2 provided with a second connecting rod 22 rotatably connected to the guide mechanism 4, when the toggle member 21 is forced to swing by force, the bearing frame 2 rotates relative to the chassis 1 and lifts up the rear portion of the sitting member 3, meanwhile, the bearing frame 2 drives the second connecting rod 22 to swing, the guide mechanism 4 rotates relative to the chassis 1 under the driving of the second connecting rod 22, the guide mechanism 4 jacks up the front portion of the chassis 1, and further raises the height of the front portion of the sitting member 3, the whole height of the sitting part 3 is improved, the wheelchair can be independently operated by a patient to lift the sitting height of the wheelchair under the condition of ensuring the portability of the wheelchair, and the requirement that the patient independently takes high articles is met.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A liftable folding wheelchair is characterized by comprising a bearing frame, a sitting part arranged on the bearing frame, a bottom frame, a guide mechanism rotationally connected to the front part of the bottom frame and a driving wheel arranged at the rear part of the bottom frame; the bearing frame is rotationally connected to the front part of the bottom frame, the rear part of the bottom frame is rotationally provided with a first connecting rod, the bearing frame is rotationally provided with a poking piece, one end of the poking piece is rotationally connected to the free end of the first connecting rod, and the bearing frame, the bottom frame, the first connecting rod and the poking piece form an inverse parallelogram mechanism; the front part of the bearing frame is provided with a second connecting rod which is rotatably connected with the guide mechanism, and the guide mechanism is provided with a guide wheel.

2. The liftable and foldable wheelchair as claimed in claim 1, further comprising a buffer cylinder, wherein one end of the buffer cylinder is connected to the base frame, and the other end of the buffer cylinder is connected to the bearing frame.

3. The liftable and foldable wheelchair as claimed in claim 1, further comprising a third link, wherein both ends of the third link are rotatably connected to the guide mechanism and the base frame, respectively.

4. The liftable foldable wheelchair as claimed in claim 1, wherein the stirring member is fixedly connected with a handle having a circular arc structure.

5. The liftable and collapsible wheelchair of claim 1 wherein the armrests of the wheelchair are fixedly connected to said toggle member.

6. The liftable folding wheelchair according to claim 1, further comprising a limiting mechanism, wherein the limiting mechanism comprises a limiting member rotatably connected to the bearing frame and a limiting member disposed at the joint of the first link and the toggle member, the limiting member is provided with two limiting arms rotatably connected thereto and arranged in a V-shape, and the limiting member is movably embedded between the two limiting arms.

7. The liftable and foldable wheelchair as claimed in claim 6, wherein the two limiting arms are provided with through holes at their free ends, and fasteners are inserted into the through holes.

8. The liftable and foldable wheelchair as claimed in claim 1, wherein the bearing frame comprises a first bearing part and a second bearing part arranged in parallel at two sides of the wheelchair, the first bearing part is rotatably provided with a first diagonal rod, and the second bearing part is rotatably provided with a second diagonal rod; the riding component comprises a first bearing rod detachably connected to the first bearing part and a second bearing rod detachably connected to the second bearing part, the free end of the first inclined rod is connected to the second bearing rod, the free end of the second inclined rod is connected to the first bearing rod, and the first inclined rod and the second inclined rod are rotatably connected.

9. The liftable and foldable wheelchair as claimed in claim 8, wherein the carrier further comprises a first stabilizer bar rotatably connected to the first bearing portion and a second stabilizer bar rotatably connected to the second bearing portion, and a free end of the first stabilizer bar and a free end of the second stabilizer bar are rotatably connected.

10. the liftable and foldable wheelchair as claimed in claim 1, wherein the base frame is provided with a tilting prevention mechanism extending in a rear direction thereof, and the tilting prevention mechanism is provided at a distal end thereof with a tilting prevention wheel.