CN212118457U

CN212118457U - Lifting and lying walking aid integrated device

Info

Publication number: CN212118457U
Application number: CN201922092963.XU
Authority: CN
Inventors: 肖乾; 徐名亮; 卢永和; 张利辉; 钟瑞
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-12-11
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to a rising helps capable all-in-one of lying, culvert draw together servo motor, ratchet, chain, differential mechanism, fixing device, rack and pinion, connecting rod, seat, backrest plate, running-board, wheel, arresting gear, handrail, handle. The device realizes the functions of conversion of different states of the deck chair and the wheelchair, intelligent walking and turning. The motion is transmitted to the ratchet wheel through the forward rotation of the servo motor, the gear rack is driven to move, the state of the wheelchair is changed from the state of the deck chair to the state of the wheelchair, and the rear wheel of the wheelchair is driven by the reverse rotation of the servo motor to realize the walking function.

Description

Lifting and lying walking aid integrated device

Technical Field

The utility model relates to an intelligence wheelchair, supplementary bed specifically are one kind through the motor transform direction realize deck chair and two kinds of different states of wheelchair one kind get up and lie and help capable integrative device.

Background

With the increasing aging degree, the proportion of the old people in China is increased, and the problems of the old people in the society are highlighted day by day. Most old people who have inconvenient walking are accompanied with lumbar vertebra problems and are difficult to finish the actions of getting on and off the bed independently. Therefore, the humanized design of the product provided aiming at the physical condition of the old people becomes an important aspect for promoting the development of the old industry; wheelchairs, being the most common device to address such needs, are becoming an emerging industry.

The multifunctional wheelchair is researched by combining multiple subjects such as material science, mechanical science and artificial intelligence abroad, and not only helps the old to solve the problems, but also solves some psychological needs of the old. However, investigation shows that the existing intelligent wheelchairs and electric wheelchairs in the market generally have the problems of single form, high price, complex operation and the like, cannot help the old people to solve the difficulties of walking, getting up and sleeping and the like, and most of the old people in China are in a salary level and cannot bear the cost, so that the utilization rate of the intelligent wheelchairs is low finally, and the market cannot be popularized.

The wheelchair integrating lifting, lying and walking is simple to operate, safe and low in price, so that the old people can get out of the way from the bed to the wheelchair, the problem to be solved urgently in the industry is solved, and the precondition for further developing the wheelchair industry is also provided.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, satisfy material benefit, easy operation, multi-functional needs, the utility model aims at providing a rising and lying helps capable integrative device, and help old person realizes accessible process from bed to the wheelchair, realizes changing into the wheelchair state from the deck chair state through rotating the handle on the seat, realizes the walking function through differential mechanism device, and switching state and walking can not go on simultaneously under the assurance motor pivoted condition. In order to achieve the above object, the utility model adopts the following technical scheme:

rising and lying help integrative device, realize mechanism state transition process: by motor (1) drive ratchet (2), will move and pass through chain (3) and transmit for fixing device (7), drive the train and do horizontal rotation, and then make the rack be horizontal seesaw at the same height, under the effect of long pull rod, rotatory motion is done around its central axis separately to running-board and connecting plate, the seat rotates along with short pull rod and moves down, drive the backrest plate and do clockwise around the rotation axis, contract the expansion plate along the spout by the pull rod, change the wheelchair state into from the deck chair state. The walking process is realized: the motor rotates reversely to transmit the motion to the differential device, and the rear wheel is driven to move to finish the walking action.

Fixing device includes various train, carries out the external toothing between train and the train, carries out the external toothing through changing ordinary gear train and other trains and changes the direction of motion, and the cooperation train links to each other through support and other trains, guarantees to convey power to rack and pinion, and this mechanism is followed the deck chair state and is changed into wheelchair state back, and the spout on the support is followed to the cooperation train and slided, prevents rack and pinion continuous motion.

Compared with the background art, the utility model, the beneficial effect who has is:

1. the transmission shaft is provided with a double-ratchet wheel combination mode for transmitting motion, the device can be controlled to realize the mechanism conversion function or the walking function by controlling the forward and reverse motion of the motor, the two working states can not be influenced mutually, and the complicated procedures of the electronic equipment are simplified.

2. The pedal type direction control is adopted, the user pedals the pedal plate with different left and right forces to drive the front wheel to control the advancing direction, and the operation stability is improved.

3. The control handle is used for adjusting the inclination of the backrest, so that the comfort of a user is improved.

4. The adjustable telescopic structure is adopted on the support frame, the height of the bed body for insomnia is basically met, and the bed body is easy to adjust.

5. The motor controller is arranged on the handrail, so that a user can conveniently adjust the walking speed.

Drawings

Fig. 1 is a schematic view of the state of the reclining chair of the utility model.

Fig. 2 is a schematic view of the wheelchair structure of the utility model.

Reference numerals: the device comprises a servo motor (1), a ratchet wheel (2), a chain (3), a differential (4), a front wheel (5), a rear wheel (6), a fixing device (7), a support (8), a rack and pinion device (9), a connecting rod (10), a seat (11), a backrest plate (12), a telescopic plate (13), a pedal plate (14), a braking device (15), an armrest (16), a handle (17), a fixed rod (18), a pull rod (19) and a support rod (20); the fixing device comprises various wheel trains.

Detailed Description

And (3) a mechanism state transition process: when the motor rotates forwards, the driving pawl is inserted into a tooth groove of the ratchet wheel, so that the ratchet wheel rotates by a certain angle, and the fixed shaft gear train and the matching gear train on the rising and lying conversion mechanism are driven to move through the chain connected with the ratchet wheel. The matching wheel system is a 45-degree bevel gear, the movement direction is changed, the long pull rod and the short pull rod are finally driven through gear and rack transmission, one end of the long pull rod is connected to the footrest through a bolt, and the footrest rotates around the seat through the movement of the rack. The seat moves downwards under the action of the section pull rod, meanwhile, torque is generated on the backrest plate, the backrest plate rotates clockwise for a certain angle around the supporting rod, the sliding groove is arranged on the inner side of the backrest plate, the telescopic plate slides along the sliding groove under the action of the connecting rod, and a user can control the motor to rotate through the operating handle, so that the device can reach any inclined position. When the rack moves to the middle position of the mechanism, the gear is just positioned at the position of the upper groove of the rack, at the moment, the mechanism does not move any more, and the mechanism is prompted to finish deformation.

The walking process comprises the following steps: the pedal is directly connected with the front wheel through a connecting rod and is connected with a connecting plate through a ball hinge connecting rod. The change of the inclination of the pedal can lead the connecting rod to incline towards two sides in the sliding groove, lead the bearing on the front wheel to generate moment and change the walking direction. The braking device is positioned in front of the handrail and used for braking the rear wheel of the wheelchair.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various modifications made by the method concept and technical solution of the present invention or directly applied to other occasions without modification are all within the protection scope of the present invention.

Claims

1. A lifting and lying walking aid integrated device comprises a servo motor (1), a ratchet wheel (2), a chain (3), a differential (4), a front wheel (5), a rear wheel (6), a fixing device (7), a rack and pinion device (8), a connecting rod (9), a seat (10), a back plate (11), a telescopic plate (12), a pedal (13), a braking device (14), an armrest (15), a fixing rod (16), a pull rod (17) and a support rod (18); the fixing device comprises various wheel trains; the servo motor is characterized in that the servo motor (1) is connected with the bottom of the fixing device (7) through a hexagon screw; the differential (4) is connected with a rear wheel (6) through a bearing; the ratchet wheel (2) is connected with a wheel train on the fixing device through a chain (3); the seat is connected with the rack and pinion device through a connecting rod mechanism; two ends of the telescopic plate are respectively connected with the connecting rod and the back plate; respectively connected by bolts and sliding chutes; two ends of the pedal are connected with the connecting rod.

2. The rising and lying walking aid integrated device according to claim 1, wherein: through the manual meshing gear train, realize two rotation power outputs that turn to the difference to this realizes the deformation of sitting and lying posture respectively.

3. The rising and lying walking aid integrated device according to claim 1, wherein: the differential mechanism can ensure that the wheelchair can stably run when the wheelchair runs on a curve, the power of the motor enters the differential mechanism through the transmission shaft gear to directly drive the planet wheel carrier, and then the planet wheel drives the left half shaft and the right half shaft to respectively drive the left wheel and the right wheel.

4. The rising and lying walking aid integrated device according to claim 1, wherein: the pedal is only needed to be stepped left and right to enable the connecting rod sliding block mechanism connected with the pedal to rotate, and the requirement of changing the steering of the wheels is met.