CN214073904U

CN214073904U - Wheelchair lifting mechanism

Info

Publication number: CN214073904U
Application number: CN202021900155.8U
Authority: CN
Inventors: 黄鑫鑫; 林勇; 刘和玉; 朱健; 王立丹; 吕劲翔
Original assignee: Zhijiang College of ZJUT
Current assignee: Zhijiang College of ZJUT
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-08-31
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a wheelchair lifting mechanism, which comprises a front double connecting rod, a rear double connecting rod, a front gear, a rear gear, a front rack, a rear rack, a rack connecting piece and an electric push rod, wherein the front gear and the rear gear are respectively arranged at the relative front part and the relative rear part of a bottom plate; the top ends of the front double connecting rods and the rear double connecting rods are respectively hinged to the relative front part and the relative rear part of the cushion supporting frame, and the bottom ends of the front double connecting rods and the rear double connecting rods are respectively fixed on the front gear and the rear gear; the front rack is meshed with the front gear, the rear rack is meshed with the rear gear, the front rack and the rear rack are fixedly connected through the rack connecting piece, and the electric push rod drives the rack connecting piece to move back and forth. The utility model discloses can realize the lift of wheelchair, the old man of being convenient for is according to the height of the required altitude mixture control wheelchair of going up and down bed, its simple structure, and is easy and simple to handle.

Description

Wheelchair lifting mechanism

Technical Field

The utility model relates to the technical field of the apparatus of helping the old, concretely relates to wheelchair elevating system.

Background

With the increase of aging, the demand of wheelchairs on the market is more and more, and many old people are inconvenient to move, so that the old people need to be assisted by a caregiver when going to bed or get out of bed, and particularly need to go from bed to wheelchair, which is very inconvenient. The existing common wheelchair is simple in structure, when the old needs to stand up, the old needs to be held up by a person, the person who holds up needs great strength to hold up the old, the labor intensity of people is high, and the old is in risk of falling down. And the old people also need to spend relatively large strength when getting up from the common wheelchair, and is difficult to get up without being held by the people, so that the design of a wheelchair lifting mechanism capable of assisting the old people to get on and off the bed is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wheelchair elevating system aims at solving the problem among the prior art that above-mentioned background art provided.

The above technical problem of the present invention can be solved by the following technical solutions: a wheelchair lifting mechanism comprises a cushion, a cushion support frame, a bottom plate, front wheels and rear wheels, wherein the cushion is supported on the cushion support frame; the wheelchair lifting mechanism comprises a front double connecting rod, a rear double connecting rod, a front gear, a rear gear, a front rack, a rear rack, a rack connecting piece and an electric push rod, wherein the front gear and the rear gear are respectively arranged at the relative front part and the relative rear part of the bottom plate; the top ends of the front double connecting rods and the rear double connecting rods are respectively hinged to the opposite front part and the opposite rear part of the cushion supporting frame, the bottom ends of the front double connecting rods and the rear double connecting rods are respectively fixed to the front gear and the rear gear, and the front double connecting rods and the rear double connecting rods respectively comprise two connecting rods which are mutually hinged; the front rack is meshed with the front gear, the rear rack is meshed with the rear gear, the front rack and the rear rack are fixedly connected through the rack connecting piece, and the electric push rod drives the rack connecting piece to move back and forth, so that the cushion supporting frame can move up and down in parallel with the bottom plate.

The further arrangement is that the bending directions of the front double-connecting rod and the rear double-connecting rod are symmetrical front and back.

The rack connecting piece is bent, so that the front rack and the rear rack are respectively meshed above and below the front gear and the rear gear.

The further setting lies in, electric putter's afterbody fixed set up on the bottom plate, electric putter's output fixedly connected with push pedal, the push pedal with rack connecting piece fixed connection.

The seat cushion is further arranged in a manner that the opposite front side of the seat cushion is hinged on the seat cushion supporting frame, and a vertical fixing rod is downwards arranged at the bottom of the opposite front end of the seat cushion supporting frame; the novel seat cushion is characterized in that a first lifting-assisting connecting rod and a second lifting-assisting connecting rod which are mutually hinged are arranged at the bottom of the opposite rear side of the seat cushion, the top end of the first lifting-assisting connecting rod is hinged to the bottom of the opposite rear side of the seat cushion, the middle of the second lifting-assisting connecting rod is hinged to the bottom end of the fixing rod, and a pedal plate is fixedly arranged at the bottom end of the second lifting-assisting connecting rod.

The further arrangement is that the front wheels are universal wheels.

A further arrangement is that the rear wheel is a large diameter hand wheel.

The further setting lies in, electric putter's specification is: the stroke is 10mm, the speed is 7mm/s, and the rated voltage is 12V.

Compared with the prior art, the utility model, its beneficial effect lies in: the utility model discloses can realize the lift of wheelchair, the old man of being convenient for is according to the height of the required altitude mixture control wheelchair of going up and down bed, its simple structure, and is easy and simple to handle.

Drawings

Fig. 1 is a schematic view of the overall structure of the wheelchair of the present invention.

Fig. 2 is a schematic structural view of the lifting mechanism of the wheelchair of the present invention.

Fig. 3 is a detailed schematic view of the middle gear of the present invention.

Fig. 4 is a schematic structural diagram of the lifting part of the present invention.

In the figure: 100. a backrest; 200. a cushion; 300. a cushion support frame; 400. a leg rest; 500. A bottom plate 501, a saddle underframe 502 and a front and rear wheel connecting frame; 600. a front wheel; 700. a rear wheel; 800. an armrest 801, an armrest folding bar;

1. an electric push rod; 2. a front double link; 3. a rear double link; 4. a front gear; 5. a rear gear; 6. a front rack; 7. a rear rack; 8. a rack bar connection; 9. pushing the plate; 10. fixing the rod; 11. a first rising-assisting connecting rod; 12. a second rising-assisting connecting rod; 13. a foot pedal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further specifically described below by way of embodiments and with reference to the accompanying drawings.

Example (b): 1-4, the wheelchair comprises a backrest 100, a cushion 200, a cushion support 300, a leg rest 400, a bottom plate 500, front wheels 600 and rear wheels 700, wherein the cushion 200 is supported on the cushion support 300, and the bottom plate 500 is parallel to the cushion 200; the left side and the right side of the bottom plate 500 are respectively provided with a seat bottom frame 501, the seat bottom frame 501 is respectively and fixedly provided with a front wheel connecting frame and a rear wheel connecting frame 502, the front wheel 600 and the rear wheel 700 are respectively installed at the front end and the rear end of the front wheel connecting frame and the rear wheel connecting frame 502, the front wheel 600 is a universal wheel, the direction of an old man can be conveniently controlled, the rear wheel 700 is a large-diameter manual wheel, and the old man can shake the wheel with a hand. The two sides of the seat cushion 200 are respectively provided with a foldable handrail, the foldable handrail comprises a handrail 800 and two handrail folding rods 801, the two ends of the handrail folding rods 801 are respectively hinged to the handrail 800 and the seat cushion support frame 300, the handrail 800 can be folded on the two sides of the seat cushion 200 through the handrail folding rods 801, and the wheelchair can be conveniently moved out of the old from the side.

The wheelchair lifting mechanism comprises an electric push rod 1, two front double connecting rods 2, two rear double connecting rods 3, two front gears 4, two rear gears 5, two front racks 6, two rear racks 7 and two rack connecting pieces 8, wherein the front gears 4 and the rear gears 5 are respectively arranged at the relative front part and the relative rear part of the bottom plate 500 through gear carriers; the top ends of the front double-connecting rod 2 and the rear double-connecting rod 3 are respectively hinged to the relative front part and the relative rear part of the cushion supporting frame 300, the bottom ends of the front double-connecting rod 2 and the rear double-connecting rod 3 are respectively fixed to the front gear 4 and the rear gear 5, and the front double-connecting rod 2 and the rear double-connecting rod 3 respectively comprise two connecting rods which are mutually hinged; the front rack 6 is meshed with the front gear 4, the rear rack 7 is meshed with the rear gear 5, and the front rack 6 and the rear rack 7 are fixedly connected through a rack connecting piece 8, so that the front rack 6 and the rear rack 7 are linked.

In the structure, the front and back symmetrical directions of the front double-connecting rod 2 and the back double-connecting rod 3 are in front and back symmetry, namely the front double-connecting rod 2 and the back double-connecting rod 3 are both bent outwards or both bent inwards, and the front and back symmetrical structure is firmer. The front rack 6 is meshed above the front gear 4, the rear rack 7 is meshed below the rear gear 5, and a rack connecting piece between the front rack 6 and the rear rack 7 is bent.

In this embodiment, electric putter 1's afterbody is fixed to be set up on bottom plate 500, and electric putter 1's output fixedly connected with push pedal 9, push pedal 9 and two 8 fixed connections of rack connecting piece, and electric putter 1's specification is: the stroke is 10mm, the speed is 7mm/s, and the rated voltage is 12V. When the electric push rod 1 drives the rack connecting piece 8 to move back and forth, the front rack 6 and the rear rack 7 synchronously move and simultaneously drive the front gear 4 and the rear gear 5 to reversely rotate, so that the front double-connecting-rod 2 and the rear double-connecting-rod 3 are driven to rotate by one connecting rod positioned below, the included angle of the double connecting rods is changed, and the purpose of lifting the cushion is realized.

In this embodiment, in order to realize the function of facilitating the elderly to stand up, the opposite front side of the seat cushion 200 is hinged to the seat cushion support frame 300, and the bottom of the opposite front end of the seat cushion support frame 300 is provided with a vertical fixing rod 10 downwards; the bottom of the opposite rear side of the seat cushion 200 is provided with a first lifting-assisting connecting rod 11 and a second lifting-assisting connecting rod 12 which are mutually hinged, the top end of the first lifting-assisting connecting rod 11 is hinged to the bottom of the opposite rear side of the seat cushion 200, the opposite middle part of the second lifting-assisting connecting rod 12 is hinged to the bottom end of the fixed rod 10, and the bottom end of the second lifting-assisting connecting rod 12 is fixedly provided with a pedal 13. When the old people need to stand up from the wheelchair, the old people only need to tread the pedal 13 downwards with slight force, and the body tilts forwards slightly, so that the first rising-assisting connecting rod 11 and the second rising-assisting connecting rod 12 can drive the cushion to tilt forwards, and the rising-assisting purpose is achieved.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. All changes and modifications that may be made by the technical spirit of the present invention to the above embodiments by simple modification are considered to fall within the scope of the present invention.

Claims

1. A wheelchair lifting mechanism comprises a cushion, a cushion support frame, a bottom plate, front wheels and rear wheels, wherein the cushion is supported on the cushion support frame; the wheelchair lifting mechanism is characterized by comprising a front double connecting rod, a rear double connecting rod, a front gear, a rear gear, a front rack, a rear rack, a rack connecting piece and a second electric push rod, wherein the front gear and the rear gear are respectively arranged at the relative front part and the relative rear part of the bottom plate; the top ends of the front double connecting rods and the rear double connecting rods are respectively hinged to the opposite front part and the opposite rear part of the cushion supporting frame, the bottom ends of the front double connecting rods and the rear double connecting rods are respectively fixed to the front gear and the rear gear, and the front double connecting rods and the rear double connecting rods respectively comprise two connecting rods which are mutually hinged; the front rack is meshed with the front gear, the rear rack is meshed with the rear gear, the front rack and the rear rack are fixedly connected through the rack connecting piece, and the second electric push rod drives the rack connecting piece to move back and forth, so that the cushion supporting frame can move up and down in parallel with the bottom plate.

2. The wheelchair lifting mechanism of claim 1 wherein the bending directions of the front and rear double links are symmetrical front to back.

3. A wheelchair lifting mechanism as claimed in claim 1 wherein the rack connection is bent so that the front and rear racks engage above and below the front and rear gears respectively.

4. The wheelchair lifting mechanism of claim 1 wherein the second electric push rod is fixedly arranged at the rear end of the base plate, the output end of the second electric push rod is fixedly connected with a push plate, and the push plate is fixedly connected with the rack connecting piece.

5. A wheelchair lifting mechanism as claimed in claim 1, wherein the opposite front sides of the seat cushion are hinged to the seat cushion support frame, and the bottom of the opposite front ends of the seat cushion support frame is provided with a vertical fixing rod downwards; the novel seat cushion is characterized in that a first lifting-assisting connecting rod and a second lifting-assisting connecting rod which are mutually hinged are arranged at the bottom of the opposite rear side of the seat cushion, the top end of the first lifting-assisting connecting rod is hinged to the bottom of the opposite rear side of the seat cushion, the middle of the second lifting-assisting connecting rod is hinged to the bottom end of the fixing rod, and a pedal plate is fixedly arranged at the bottom end of the second lifting-assisting connecting rod.

6. A wheelchair lift mechanism as claimed in claim 1, wherein the front wheels are universal wheels.

7. A wheelchair lift mechanism as claimed in claim 1 wherein the rear wheels are large diameter hand-operated wheels.