CN219184599U

CN219184599U - Folding electric wheelchair

Info

Publication number: CN219184599U
Application number: CN202320136376.XU
Authority: CN
Inventors: 马鸿发; 赵川
Original assignee: Qingdao University
Current assignee: Qingdao University
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-06-16
Anticipated expiration: 2033-01-16

Abstract

The utility model discloses a folding electric wheelchair, which comprises a chassis, wherein driving wheels are symmetrically arranged at the left end and the right end of the rear side of the chassis, driven wheels are symmetrically arranged at the left end and the right end of the front side of the chassis, and the folding electric wheelchair further comprises: the folding seat comprises a seat, a folding bracket, a folding driving structure, a power module and a control unit; the seat is positioned above the chassis and comprises a seat frame and a back frame, and the seat frame and the back frame are rotationally connected through a clamping structure; the folding bracket comprises a shaft sleeve fixedly arranged on the chassis, a rotating shaft rotatably arranged in the shaft sleeve, supporting arms symmetrically arranged at two ends of the rotating shaft and a connecting rod connecting the two supporting arms; the folding driving structure comprises a first electric push rod and two second electric push rods. Can realize automatic folding and expansion through first electric putter and second electric putter, save artifical manual operation, labour saving and time saving, intelligent degree is high, and user experience is good, in addition, folding back seat can laminate with the chassis, and whole volume is less, and storage, transportation are convenient.

Description

Folding electric wheelchair

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a folding electric wheelchair.

Background

The wheelchair is an important mobile tool for home rehabilitation, turnover transportation, consultation and outgoing activities of wounded persons, patients and disabled persons. The wheelchair not only meets the riding instead of walking requirements of disabled limbs and people with mobility impairment, but also is more important to facilitate the movement of family members and care of patients, so that the patients can exercise and participate in social activities by means of the wheelchair. At present, many wheelchairs in the market have folding functions, the folding and unfolding of the existing folding wheelchairs are generally carried out manually, the operation is complex, time and labor are wasted, the use is inconvenient, in addition, the overall size of the wheelchairs after folding is large, and the occupied space for storage and transportation is large. There is a need for improvements in the art.

Disclosure of Invention

The utility model aims to provide a folding electric wheelchair, which aims to solve the problems that in the prior art, the folding and unfolding of a wheelchair are generally carried out manually, the operation is complex, time and labor are wasted, the use is inconvenient, the whole volume of the folded wheelchair is large, and the occupied space for storage and transportation is large.

In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

the utility model provides a foldable electric wheelchair, includes the chassis, installs the action wheel at chassis rear side left and right sides both ends symmetry, installs from the driving wheel at chassis front side left and right sides both ends symmetry, still includes: the folding seat comprises a seat, a folding bracket, a folding driving structure, a power module and a control unit;

the seat is positioned above the chassis and comprises a seat frame and a back frame, and the seat frame and the back frame are rotationally connected through a clamping structure;

the folding bracket comprises a shaft sleeve fixedly arranged on the chassis, a rotating shaft rotatably arranged in the shaft sleeve, supporting arms symmetrically arranged at two ends of the rotating shaft and a connecting rod for connecting the two supporting arms, a sleeve is rotatably sleeved at the middle position of the connecting rod, sliding rail structures are symmetrically arranged at the left side and the right side of the seat frame, each sliding rail structure comprises a rail and a sliding block slidably arranged on the rail, and the two supporting arms are respectively and rotatably connected with the corresponding sliding blocks;

the folding driving structure comprises a first electric push rod and two second electric push rods, a strip-shaped mounting groove is formed in the middle of the chassis, the base of the first electric push rod is hinged to the strip-shaped mounting groove, the push rod of the first electric push rod is fixedly connected with the sleeve, the two driving wheels are respectively connected with the seat frame through the second electric push rod, the base of the second electric push rod is rotatably connected with the driving shaft on the driving wheel through a bearing with a seat, and the push rod of the second electric push rod is connected with the seat frame.

Preferably, two driving motors are installed on the chassis and are respectively used for driving one driving wheel.

Preferably, the two clamping structures comprise clamping protrusions, the clamping protrusions are fixedly arranged on the rear side of the seat frame and perpendicular to the seat frame, a transverse shaft is vertically and fixedly arranged at the end part of the clamping protrusions, clamping grooves matched with the clamping protrusions are formed in the front side surface of the bottom of the back frame, the clamping protrusions are located in the clamping grooves, and the transverse shaft is rotationally connected with the left end face and the right end face of the clamping grooves.

Preferably, the seat further comprises a cushion fixedly mounted on the seat frame and a cushion fixedly mounted on the back frame.

Preferably, armrests are symmetrically arranged on the left side and the right side of the seat frame.

Compared with the prior art, the utility model has the beneficial effects that:

according to the folding electric wheelchair, the first electric push rod and the second electric push rod can be used for realizing automatic folding and unfolding, manual operation is omitted, time and labor are saved, the intelligent degree is high, the user experience is good, in addition, the folded chair can be attached to the chassis, the whole size is small, and the folding electric wheelchair is convenient to store and transport.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

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

Fig. 3 is a schematic diagram of connection between the first electric push rod and the connecting rod according to the present utility model.

Fig. 4 is a schematic view showing a folded state of the wheelchair of the present utility model.

In the figure: 1. a chassis; 2. a power module; 3. a driving wheel; 4. a driving shaft; 5. driven wheel; 6. a sitting frame; 7. a back frame; 8. a clamping protrusion; 9. a horizontal axis; 10. a clamping groove; 11. an armrest; 12. a shaft sleeve; 13. a support arm; 14. a connecting rod; 15. a sleeve; 16. a slide rail structure; 17. a first electric push rod; 18. a second electric push rod; 19. a strip-shaped mounting groove; 20. a bearing with a seat; 21. and a control panel.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Furthermore, in the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a preferred embodiment of the present utility model provides a folding electric wheelchair including: chassis 1, seats, folding supports, folding driving structure, power module 2 and control unit (not shown in the figure).

The left end and the right end of the rear side of the chassis 1 are symmetrically provided with driving wheels 3, each driving wheel 3 is fixedly provided with a driving shaft 4, two driving motors are arranged at corresponding positions of the chassis 1 and are respectively used for driving one driving wheel 3, and specifically, the output shafts of the driving motors are in transmission connection with the driving shafts 4 on the driving wheels 3. Driven wheels 5 are symmetrically arranged at the left end and the right end of the front side of the chassis 1. When the two driving motors rotate at the same rotating speed, the wheelchair moves straight or retreats, and when the two driving motors have the rotating speed difference, the two driving wheels have the rotating speed difference, so that the wheelchair is turned.

The seat is positioned above the chassis 1 and comprises a seat frame 6, a seat cushion fixedly arranged on the seat frame 6, a back frame 7 and a back cushion fixedly arranged on the back frame 7, wherein the seat frame 6 and the back frame 7 are rotationally connected through clamping structures, and the number of the clamping structures is preferably two. Specifically, as shown in fig. 2, the clamping structure includes a clamping protrusion 8, the clamping protrusion 8 is fixedly mounted at the rear side of the seat frame 6 and is perpendicular to the seat frame 6, a transverse shaft 9 is fixedly mounted at the end of the clamping protrusion 8, a clamping groove 10 adapted to the clamping protrusion 8 is formed in the front side surface of the bottom of the back frame 7, the clamping protrusion 8 is located in the clamping groove 10, and the transverse shaft 9 is rotationally connected with the left end surface and the right end surface of the clamping groove 10. In the use state of the wheelchair, the back frame 7 is turned upwards by taking the transverse shaft 9 as the axial direction, and the maximum turning angle of the back frame 7 is about 90 degrees under the limiting action of the clamping convex 8. When the wheelchair needs to be folded, the back frame 7 is turned downwards by taking the transverse shaft 9 as an axial direction, and the back frame 7 can be turned to be attached to the seat frame 6.

Further, armrests 11 are symmetrically installed at the left and right sides of the seat frame 6 to facilitate a wheelchair occupant.

The folding bracket includes: a shaft sleeve 12, wherein the shaft sleeve 12 is fixedly arranged on the chassis 1, and the shaft sleeve 12 is positioned between the two driven wheels 5; a rotating shaft (not shown) rotatably installed in the shaft housing 12, and both ends of the rotating shaft respectively extend out of the shaft housing; the two support arms 13 are arranged, and the two support arms 13 are symmetrically arranged at two ends of the rotating shaft; a link 14, the link 14 is disposed between the two support arms 13, one end of the link 14 is vertically connected with one support arm 13, and the other end of the link 14 is vertically connected with the other support arm 13.

Further, as shown in fig. 3, a sleeve 15 is rotatably fitted in the intermediate position of the link 14.

The left side and the right side of the seat frame 6 are symmetrically provided with the sliding rail structures 16, the sliding rail structures 16 comprise rails and sliding blocks which are slidably arranged on the rails, and the rails are arranged along the front-back direction of the seat frame 6. The two supporting arms 13 are respectively and rotatably connected with corresponding sliding blocks, in particular, pin shafts are fixedly arranged on the sliding blocks, pin holes are formed in the supporting arms 13, and the pin shafts are rotatably arranged in the pin holes.

The folding driving structure includes: a first electric push rod 17 and two second electric push rods 18. The middle position of the chassis 1 is provided with a strip-shaped mounting groove 19, the strip-shaped mounting groove 19 is arranged along the front-back direction of the chassis 1, the base of the first electric push rod 17 is arranged in the strip-shaped mounting groove 19 in a hinged manner, namely, the first electric push rod 17 can rotate by taking a hinged shaft as an axis, and the push rod of the first electric push rod 17 is fixedly connected with the sleeve 15 arranged on the connecting rod 14. The two driving wheels 3 are respectively connected with the seat frame 6 through a second electric push rod 18, specifically, a bearing 20 with a seat is installed on the driving shaft 4 of the driving wheel 3, the base of the second electric push rod 18 is fixedly connected with the bearing 20 with a seat, and the push rod of the second electric push rod 18 is fixedly connected with the seat frame 6 (of course, the push rod can also be hinged).

As shown in fig. 4, when the folding wheelchair is folded, the first electric push rod 17 contracts and drives the two support arms 13 to turn down around the rotation shaft, and the two support arms 13 slide backward along the respective tracks during the turning down. Simultaneously, the two second electric push rods 18 synchronously shrink and drive the seat to move downwards, so that shrinkage is realized. When the folding wheelchair is unfolded, the folding wheelchair can be unfolded by referring to the reverse action of the folding process of the wheelchair.

The power module 2 is installed on the chassis 1, and adopts a charging mode for supplying power to the two driving motors, the first electric push rod 17, the two second electric push rods 18 and the control unit.

The control unit includes a main control board and a control panel 21, the main control board is provided with a programmable controller and other components, which are not described herein, and specifically referring to the prior art, the control panel 21 is provided on one of the armrests 11, and a user can control the wheelchair to advance, retreat, turn, fold and unfold through the control panel 21.

In summary, according to the folding electric wheelchair disclosed by the embodiment of the utility model, the first electric push rod and the second electric push rod can realize automatic folding and unfolding, so that manual operation is omitted, time and labor are saved, the intelligent degree is high, the user experience is good, in addition, the folded seat can be attached to the chassis, the whole size is small, and the storage and transportation are convenient.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a foldable electric wheelchair, includes the chassis, installs the action wheel at chassis rear side left and right sides both ends symmetry, installs from the driving wheel at chassis front side left and right sides both ends symmetry, its characterized in that still includes: the folding seat comprises a seat, a folding bracket, a folding driving structure, a power module and a control unit;

2. A folding electric wheelchair according to claim 1, characterised in that the chassis is provided with two drive motors each for driving a drive wheel.

3. The folding electric wheelchair according to claim 1, wherein the two clamping structures comprise clamping protrusions, the clamping protrusions are fixedly arranged on the rear side of the seat frame and are perpendicular to the seat frame, a transverse shaft is vertically and fixedly arranged at the end part of the clamping protrusions, a clamping groove matched with the clamping protrusions is formed in the front side surface of the bottom of the back frame, and the clamping protrusions are located in the clamping groove and are rotationally connected with the left end face and the right end face of the clamping groove.

4. A folding electric wheelchair according to claim 1, characterised in that the chair further comprises a seat cushion fixedly mounted on the seat frame and a back cushion fixedly mounted on the back frame.

5. A folding electric wheelchair according to claim 1, characterised in that armrests are symmetrically mounted on the left and right sides of the seat frame.