CN111904740A

CN111904740A - Multifunctional intelligent wheelchair and intelligent wheelchair combined bed

Info

Publication number: CN111904740A
Application number: CN202010828460.9A
Authority: CN
Inventors: 郑立辉; 李宇豪; 燕彤雨; 陈存; 沈凤羽
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-10

Abstract

The invention discloses a multifunctional intelligent wheelchair, which comprises a backrest, a cushion, leg supports, pedals, armrests, a rack module and seat wheels, wherein the backrest, the cushion, the leg supports, the armrests and the seat wheels are arranged on the rack module; the backrest, the cushion and the leg support are respectively pushed by an independent push rod to form a three-link structure. The invention has the main beneficial effects that: the separating structure is utilized, and the process of getting on and off the bed is saved when the wheelchair is combined with the bed; the lifting assistance structure assists in sitting up. The falling down of people by accident is avoided, the accident is reduced, and the health of the old is cared. The self-service electromagnetic induction type wireless charging reduces unnecessary potential safety hazards; the armrests are of a closed deformable and foldable four-bar structure; the leg support and the foot support adopt an electromagnet self-locking mode, so that power loss is reduced. The invention adopts the integrated and flexible design, thereby achieving multiple purposes of one wheelchair.

Description

Multifunctional intelligent wheelchair and intelligent wheelchair combined bed

The technical field is as follows:

the invention relates to the technical field of household articles, in particular to a multifunctional intelligent wheelchair and an intelligent wheelchair combined bed.

Background art:

with the development of science and technology and traffic, more and more old people live independently. The old people easily suffer from swelling of the lower body, overlarge venous pressure, abnormal bending of the spine and damaged functions in the body after sitting for a long time; and long-term lying of the pillow can easily cause the heart function of the old to be attenuated, the blood circulation to be dull and the muscle tissue to be relaxed. The old need move about more, and the walking of standing more, and get up and lie down from the bed, the process of standing up from sitting is comparatively difficult for the old, and the focus is unstable can bring certain risk, especially to the solitary old man.

In order to meet the above-mentioned practical needs, in recent years, new products have been proposed to help the elderly live alone. Such as: electric nursing beds, electric wheelchairs, etc., and these products have the following problems.

Electric nursing bed: the problems of inconvenient movement, difficult getting on and off of the bed for the old, easy generation of pressure sores, low comfort degree and the like exist.

Electric wheelchair: has the problems of poor cruising ability, difficult sitting and rising, incapability of automatic navigation, wired charging, semi-automation and the like

In view of the above, it is necessary to develop an integrated separable wheelchair bed and it is very practical to use it.

The invention content is as follows:

in order to overcome the defects in the prior art, the invention designs the wheelchair which can assist the old to stand up and can be transformed into a bed and used as a wheelchair for daily use.

The technical scheme of the invention is as follows: the utility model provides a multi-functional intelligent wheelchair, includes that back, cushion, leg hold in the palm, footboard, handrail, frame module and seat wheel, back, cushion, leg hold in the palm, handrail and seat wheel install on frame module its characterized in that: a first rotating shaft and a second rotating shaft are respectively connected between the backrest and the cushion and between the cushion and the leg supports; the backrest, the cushion and the leg support are respectively pushed by an independent push rod to form a three-link structure.

In one embodiment, when the user needs to lie down, the backrest, the seat cushion and the leg rest are in a horizontal posture; when a user needs to stand, the backrest, the seat cushion and the leg supports are in vertical postures, and the pedals are in horizontal postures.

In one embodiment, when a user needs to lie down, the armrest rotates along the edges of the backrest and the seat cushion to below the seat cushion and the backrest; when a user stands, the handrail is supported by the oblique first support and the vertical two-section support which is in a straight line, and the fourth steering engine controls the oblique stretching of the first support to control the angle between the handrail and the backrest; when a user needs to sit, the handrail is supported by the inclined first support and the first section of support in the two-section type support, the second section of support in the two-section type support is rotatably connected with the first section of support, and the second section of support rotates to the horizontal direction along one end of the first section of support, so that a four-bar structure is formed.

In one embodiment, the pedal and the leg support are connected through a bolt component, and when the bolt component is connected, the pedal and the leg support can move synchronously; when the latch assembly is not connected, the pedal and the leg rest may each move independently.

In one embodiment, the frame module comprises a plurality of square pipes, plate pieces and corner pieces, the square pipes are connected through the corner pieces to form a transversely symmetrical structure, the plate pieces are installed on two sides of the transversely symmetrical structure, and the seat wheels are installed below the transversely symmetrical structure.

In one embodiment, the connection and disconnection of the latch assembly is electrically controlled by the electromagnet.

In one embodiment, the backrest, the seat cushion and the leg support are respectively pushed by a first push rod, a second push rod and a third push rod and are respectively driven by a first steering engine, a second steering engine and a third steering engine.

In one embodiment, the multifunctional intelligent wheelchair is further provided with a wireless charging module which can be charged wirelessly.

In one embodiment, the seat wheels are two front wheels and two rear wheels, the rear wheels being driven by a drive motor.

A multifunctional intelligent wheelchair combined bed is characterized in that when a backrest, a cushion and leg supports in a multifunctional intelligent wheelchair are in a horizontal posture and armrests are turned to the lower side of a bed body, the multifunctional intelligent wheelchair and the bed body can be spliced into a whole to form the combined bed; wherein the bed body is formed by two sections which can be folded and turned over.

The invention has the main beneficial effects that:

1) the invention utilizes the separated structure, and the process of getting on and off the bed is saved by combining the wheelchair and the bed; the lifting assistance structure assists in sitting up. The falling down of people by accident is avoided, the accident is reduced, and the health of the old is cared.

2) Self-service electromagnetic induction type wireless charging reduces unnecessary potential safety hazard.

3) The handrail of the invention is a closed deformable foldable and storable four-bar linkage structure; the leg support and the foot support adopt an electromagnet self-locking mode, so that power loss is reduced.

4) The invention adopts the integrated and flexible design, thereby achieving multiple purposes of one wheelchair.

Description of the drawings:

the above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:

FIG. 1 is a schematic perspective view of a multifunctional intelligent wheelchair according to an embodiment of the present invention;

FIG. 2 is a schematic view of a three-link structure of a multifunctional intelligent wheelchair according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a multifunctional intelligent wheelchair combined bed according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a bed body of a multifunctional intelligent wheelchair combined bed according to an embodiment of the present invention;

FIG. 5 illustrates an exploded perspective view of the multi-function wheelchair, according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a multifunctional intelligent wheelchair when a user stands according to an embodiment of the present invention;

FIG. 7 is a schematic view of an armrest mounted in the multifunctional intelligent wheelchair according to an embodiment of the present invention;

FIG. 8 is a schematic exploded view of an armrest in a multi-functional intelligent wheelchair in accordance with an embodiment of the present invention;

FIG. 9 illustrates an exploded view of a frame module of the multi-function intelligent wheelchair in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of a multifunctional intelligent wheelchair with a leg rest and pedals connected according to an embodiment of the present invention;

FIG. 11 is a schematic view of a multifunctional intelligent wheelchair with a leg rest and pedals separated from each other according to an embodiment of the present invention;

FIG. 12 is an exploded perspective view of the multifunctional intelligent wheelchair according to an embodiment of the present invention.

In the drawings:

1-backrest, 2-cushion, 3-leg support, 4-pedal, 5-handrail, 6-frame module, 7-seat wheel, 81-first rotating shaft, 82-second rotating shaft, 51-first support, 52-first section support, 53-second section support, 43-bolt component, 61-square tube, 62-plate, 63-corner piece, 11-first push rod, 12-second push rod, 13-third push rod, 111-first steering engine, 121-second steering engine, 131-third steering engine, 7-seat wheel, 71-front wheel, 72-rear wheel, 73-driving motor, 74-battery jar, 9-bed body, 54-handrail pad, 55-aluminum square tube, 56-nut, 57-screw rod, 58-shim, 59-bearing, 50-bracket.

Referring to fig. 1 in combination with fig. 2 to 12, in an embodiment of the present invention, a multifunctional intelligent wheelchair includes a backrest 1, a seat cushion 2, leg supports 3, pedals 4, armrests 5, a frame module 6 and seat wheels 7, wherein the backrest 1, the seat cushion 2, the leg supports 3, the armrests 5 and the seat wheels 7 are mounted on the frame module 6, and a first rotating shaft 81 and a second rotating shaft 82 are respectively connected between the backrest 1 and the seat cushion 2 and between the seat cushion 2 and the leg supports 3; the backrest 1, the cushion 2 and the leg supports 3 are respectively pushed by an independent push rod to form a three-link structure.

Preferably, when the user needs to lie down, the backrest 1, the seat cushion 2 and the leg rest 3 are in a horizontal posture; when the user needs to stand, the backrest 1, the seat cushion 2 and the leg rest 3 are in a vertical posture, and the pedal 4 is in a horizontal posture.

Preferably, when the user needs to lie down, the armrests 5 rotate along the edges of the backrest 1 and the seat cushion 2 to below the seat cushion 2 and the backrest 1; when a user stands, the handrail 5 is supported by the inclined first support 51 and the vertical two-section support which is in a straight line, and the fourth steering engine (not marked in the figure) controls the inclined extension and contraction of the first support 51 to control the angle between the handrail 5 and the backrest 1; when a user needs to sit, the armrest 5 is supported by the first inclined bracket 51 and the first section support 52 of the two-section bracket, the second section support 53 of the two-section bracket is rotatably connected with the first section support 52, and the second section support 53 rotates to the horizontal direction along one end of the first section support 52, so that a four-bar linkage structure is formed.

Preferably, the pedal 4 and the leg rest 3 are connected by a latch assembly 43, and when the latch assembly 43 is connected (refer to fig. 10), the pedal 4 and the leg rest 3 can move synchronously; when the latch assembly is not connected (see fig. 11), the pedal 4 and the leg rest 3 can be moved independently, respectively.

Preferably, the frame module 6 comprises a plurality of square tubes 61, plates 62 and corner pieces 63, the square tubes 61 are connected by the corner pieces 63 to form a transversely symmetrical structure, the plates 62 are installed at two sides of the transversely symmetrical structure, and the seat wheels 7 are installed below the transversely symmetrical structure.

Preferably, the connection and disconnection of the latch assembly is electrically controlled by the electromagnet.

Preferably, the backrest 1, the seat cushion 2 and the leg rest 3 are respectively pushed by a first push rod 11, a second push rod 12 and a third push rod 13 and are respectively driven by a first steering engine 111, a second steering engine 121 and a third steering engine 131.

Preferably, multi-functional intelligent wheelchair still is equipped with wireless module of charging, but wireless charging.

Preferably, the seat wheels 7 are two front wheels 71 and two rear wheels 72, and the rear wheels 72 are driven by a driving motor 73.

It will be appreciated that the drive motor 73 is powered by a battery 74.

A multifunctional intelligent wheelchair combined bed is characterized in that when a backrest 1, a cushion 2 and leg supports 3 in a multifunctional intelligent wheelchair are in a horizontal posture, and armrests 5 are turned to the lower side of a bed body 9, the multifunctional intelligent wheelchair and the bed body 9 can be spliced into a whole to form the combined bed; wherein the bed body 9 is formed by two sections which can be folded and turned over.

It can be understood that when the wheelchair needs to become a bed and is spliced with the bed body beside, the armrests can be folded and stored due to the driven relationship and can be realized through the steering engine at the moment, the armrests are integrally rotated to the lower part of the bed body needing to be spliced, and the interference possibly caused by the armrests when the wheelchair is spliced with the bed body is realized

It can be understood that: the wheelchair part uses a rotating shaft to connect the leg support, the cushion and the backrest to form a three-link structure, and three independent electric push rods are used as the rotating power sources of the three rods, so that the function of automatic deformation of the wheelchair is achieved.

In addition, in order to ensure the safety and the comfort when the user enables the wheelchair to automatically change the form and ensure that the wheelchair is changed into a bed and is spliced with the other part of the bed body, the handrail does not interfere. We have made certain innovations in the structure of the handrail.

The improved chair is improved on the basis that the common handrails, the backrest and the seat cushion in the market are connected through the rotating shaft to form a deformable quadrilateral driven structure. The invention changes the handrail into a closed deformable foldable storage four-bar structure connected through a rotating shaft, changes the support rod at the front of the handrail into a driven telescopic rod, and adds a steering engine at the rear of the backrest, thereby achieving the effect of limiting the movement direction of the handrail.

When the wheelchair needs to realize the function of assisting the old to stand, the electric push rod can push the cushion and the backrest into 90 degrees firstly, and then the steering engine at the rear of the backrest can position the handrail. Because of the driven relation, the handrail can become 90 degrees contained angles with the back this moment, and the location of steering wheel can guarantee, in the middle of the deformation process after the wheelchair, the handrail can become 90 degrees contained angles with the back all the time.

Therefore, when the wheelchair assists the old to stand, the old can always be provided with the two hands supporting points through the handrails, and the safety of the old in the gravity center conversion process is ensured.

Because the steering wheel is controllable to the location of handrail, when also having guaranteed that the wheelchair no longer need realize the function of assisting the old man to stand, can make the handrail keep parallel with the cushion all the time, increased the travelling comfort of wheelchair.

And we have still increased the steering wheel that can realize the handrail whole roll below the four-bar linkage of handrail, and when the wheelchair needs to become the bed to splice with the bed next door, the handrail because driven relation can fold and accomodate, and we just can realize through the steering wheel of roll this moment, wholly rotatory below the bed that needs the concatenation with the handrail to this interference that the handrail probably caused when realizing wheelchair and bed concatenation.

In addition, a charging device can be additionally arranged on the inner side of the handrail, and when the handrail rolls to the position below the spliced bed, the handrail can be in butt joint with a charging interface below the bed, so that the function of wireless automatic charging is realized.

The leg holds in the palm and the foot holds in the palm the mode that adopts the electro-magnet auto-lock, and leg holds in the palm and the foot holds in the palm auto-lock at ordinary times, and a push rod promotes both synchronous motion, and when the user wanted to lie down, the electro-magnet circular telegram, the bolt was toward retrieving, and leg holds in the palm and the separation of foot support, and power loss has been reduced to such design.

It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention. In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other. It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.

Claims

1. The utility model provides a multi-functional intelligent wheelchair, includes that back, cushion, leg hold in the palm, footboard, handrail, frame module and seat wheel, back, cushion, leg hold in the palm, handrail and seat wheel install on frame module its characterized in that: a first rotating shaft and a second rotating shaft are respectively connected between the backrest and the cushion and between the cushion and the leg supports; the backrest, the cushion and the leg support are respectively pushed by an independent push rod to form a three-link structure.

2. The multi-functional intelligent wheelchair of claim 1, wherein: when a user needs to lie down, the backrest, the seat cushion and the leg supports are in horizontal postures; when a user needs to stand, the backrest, the seat cushion and the leg supports are in vertical postures, and the pedals are in horizontal postures.

3. The multi-functional intelligent wheelchair of claim 2, wherein: when a user needs to lie down, the armrests rotate to the positions below the seat cushion and the backrest along the edges of the backrest and the seat cushion; when a user stands, the handrail is supported by the oblique first support and the vertical two-section support which is in a straight line, and the fourth steering engine controls the oblique stretching of the first support to control the angle between the handrail and the backrest; when a user needs to sit, the handrail is supported by the inclined first support and the first section of support in the two-section type support, the second section of support in the two-section type support is rotatably connected with the first section of support, and the second section of support rotates to the horizontal direction along one end of the first section of support, so that a four-bar structure is formed.

4. The multi-functional intelligent wheelchair of claim 1, wherein: the pedal and the leg support are connected through a bolt component, and when the bolt component is connected, the pedal and the leg support can move synchronously; when the latch assembly is not connected, the pedal and the leg rest may each move independently.

5. The multi-functional intelligent wheelchair of claim 1, wherein: the frame module includes a plurality of side's pipe, plate and corner fittings, connects through the corner fittings between the side's pipe and forms the structure of horizontal symmetry, and the plate is installed in the both sides of the structure of horizontal symmetry, wherein, the below at horizontal symmetrical structure is installed to the seat wheel.

6. The multi-functional intelligent wheelchair of claim 4, wherein: and the connection and disconnection of the bolt assembly are controlled by the on-off control of an electromagnet.

7. The multi-functional intelligent wheelchair of claim 1, wherein: the backrest, the cushion and the leg support are respectively pushed by a first push rod, a second push rod and a third push rod and are respectively driven by a first steering engine, a second steering engine and a third steering engine.

8. The multifunctional intelligent wheelchair as claimed in any one of claims 1 to 7, wherein: the multifunctional intelligent wheelchair is also provided with a wireless charging module which can be charged wirelessly.

9. The multi-functional intelligent wheelchair of claim 8, wherein: the seat wheels are two front wheels and two rear wheels, and the rear wheels are driven by a driving motor.

10. A multifunctional intelligent wheelchair combination bed, which is characterized by comprising a bed body and the multifunctional intelligent wheelchair as claimed in claims 1-9, wherein when a backrest, a cushion and a leg support in the multifunctional intelligent wheelchair are in a horizontal posture, and armrests are turned to the lower part of the bed body, the multifunctional intelligent wheelchair and the bed body can be spliced into a whole to form the combination bed; wherein the bed body is formed by two sections which can be folded and turned over.