CN108721007B

CN108721007B - Folding electric wheelchair

Info

Publication number: CN108721007B
Application number: CN201810645926.4A
Authority: CN
Inventors: 颜正钦
Original assignee: Suzhou Kaidao Intelligent Equipment Co ltd
Current assignee: Suzhou Kaidao Intelligent Equipment Co ltd
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2021-09-03
Anticipated expiration: 2038-06-21
Also published as: CN108721007A; WO2019242063A1

Abstract

The invention discloses a folding electric wheelchair, comprising: the seat comprises a front frame, a rear frame, a seat joint, a folding locking assembly, a folding fixing piece, a lower surrounding frame and a folding guide rail piece. Through the mode, the folding electric wheelchair disclosed by the invention has the advantages that the folding guide rail pieces, the folding fixing pieces and the folding locking assemblies are used for locking and unlocking the folding state of the wheelchair, the locking stability and firmness are improved in a jack mode, the bearing capacity of the whole wheelchair is improved through the folding guide rail pieces, the movement direction and the position of the folding locking assemblies are timely corrected and limited, and the folding electric wheelchair is convenient, rapid and stable to use.

Description

Folding electric wheelchair

Technical Field

The invention relates to the field of wheelchairs and accessories thereof, in particular to a folding electric wheelchair.

Background

The wheelchair is a walking tool and a common medical rehabilitation apparatus for people who are disabled to move, and is also used for physical exercise and participation in social activities of users. The wheelchair can be folded to facilitate the use of the user.

However, the current wheelchair utilizes the movement of the connecting element in the sliding groove to control the folding, but the structure is easy to cause the situation that the connecting element is blocked or loosened when in use, thereby causing the wheelchair not to be folded or unfolded, and some wheelchairs also utilize an electric driving device to fold, but the structure not only can increase the weight of the wheelchair, but also can greatly increase the production cost of the wheelchair, and bring much inconvenience to users.

Disclosure of Invention

The invention mainly solves the technical problem of providing a folding electric wheelchair, which has the advantages of high reliability, convenient use, good folding effect and the like, and has wide market prospect in the application and popularization of the wheelchair and accessories thereof.

In order to solve the technical problems, the invention adopts a technical scheme that:

there is provided a folding electric wheelchair comprising: a front frame, a rear frame, a seat joint, a folding locking component, a folding fixing piece, a lower surrounding frame and a folding guide rail piece for bearing, guiding and limiting the folding locking component,

the bottom swing joint of preceding frame is on the front wheel, the top of preceding frame is passed through the seat joint with the seat is connected, the rear end of seat with back frame is connected, the bottom activity of back frame set up in on the drive rear wheel, enclose the frame down respectively with preceding frame with back frame is connected, is close to back frame the tip of enclosing the frame down is provided with folding stationary blade, the top of folding mount is provided with folding hole and expansion hole, be provided with on the exhibition trompil folding guide rail piece, folding locking Assembly passes through the connecting rod and sets up in two between the back frame, the both ends of folding locking Assembly with folding hole or exhibition trompil swing joint for the wheelchair carries out folding locking and unblock.

In a preferred embodiment of the invention, the folding locking assembly is movably connected with the folding hole or the unfolding hole through extension and retraction of two ends, so that the wheelchair can be locked and unlocked in the folding process.

In a preferred embodiment of the present invention, when folding and locking, both ends of the folding and locking assembly extend through the folding guide piece and are connected with the unfolding hole, or both ends of the folding and locking assembly extend and are connected with the folding hole; when the folding locking component is folded and unlocked, the two ends of the folding locking component are retracted and separated from the folding hole or the unfolding hole.

In a preferred embodiment of the present invention, the folding guide rail piece has a U-shaped structure.

In a preferred embodiment of the invention, a backrest is arranged at the top of the rear frame, and an adjusting device for stepless adjusting the angle of the backrest is arranged between the backrest and the rear frame.

In a preferred embodiment of the invention, the two sides of the seat are provided with armrest frames which can move up and down and armrests which are positioned on the armrest frames and move back and forth on the armrest frames.

In a preferred embodiment of the invention, the top of the backrest is provided with a headrest with adjustable height.

In a preferred embodiment of the invention, a pedal plate is arranged at the end part of the lower enclosure frame close to the front frame, the pedal plate and the lower enclosure frame are in foldable connection, and a lower enclosure frame joint for limiting the folding angle of the pedal plate is arranged on the lower enclosure frame.

In a preferred embodiment of the present invention, a cushion support block is movably disposed between the lower frame and the seat.

In a preferred embodiment of the invention, the folding locking assembly comprises a hollow tube, a folding connecting rod, connecting blocks, springs, connecting sleeves, a movable hole, a connecting bolt and an unlocking pin, the hollow tube is fixedly connected with the rear frame through the connecting rod, the connecting sleeves are arranged at two ends of the hollow tube, one end of the folding connecting rod is arranged in the hollow tube and is connected with the connecting blocks, the other end of the folding connecting rod penetrates through the connecting sleeves to be connected with the unlocking pin, the springs are arranged between the two connecting blocks, the movable hole is arranged on the hollow tube, one end of the connecting bolt penetrates through the movable hole to be connected with the connecting blocks, and a folding handle knob is arranged at the other end of the connecting bolt.

The invention has the beneficial effects that: utilize folding guide rail piece, folding stationary blade and folding locking subassembly to lock and the unblock to the fold condition of wheelchair, adopt the mode of jack to improve the stability and the fastness of locking, improve the bearing capacity of whole car, in time revise and restrict the direction of motion, the position of folding locking subassembly through folding guide rail piece, use convenient, swift, stable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a perspective view of a foldable electric wheelchair according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the entire wheelchair in accordance with a preferred embodiment of the foldable electric wheelchair of the present invention;

FIG. 3 is a bottom perspective view of a preferred embodiment of the foldable motorized wheelchair of the present invention;

FIG. 4 is a schematic view of the folding lock assembly in a preferred embodiment of the folding electric wheelchair of the present invention;

FIG. 5 is a schematic view of the folding fixing plate according to a preferred embodiment of the folding electric wheelchair of the present invention;

FIG. 6 is a folding structure of the folding electric wheelchair of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention includes:

a body of a folding electric wheelchair includes: the folding seat comprises a front frame 1, a rear frame 2, a seat 3, a seat joint 4, a folding locking assembly 5, a folding fixing piece 6, a lower surrounding frame 7 and a folding guide rail piece 8 for bearing, guiding and limiting the folding locking assembly.

The bottom of preceding frame sets up in the cover frame of a U type or horseshoe shape, and the both sides swivelling joint of cover frame bottom is on front wheel 9, the top of preceding frame is passed through the seat joint with the seat is connected, the rear end of seat with the back frame is connected, the bottom activity of back frame set up in on the drive rear wheel 10, enclose the frame down respectively with preceding frame with the back frame is connected, the seat with enclose down and be connected with a movable cushion supporting shoe through the activity joint between the frame for increase the bearing of seat, improve the stability and the security of wheelchair.

Be close to the rear truck frame the tip of enclosing the frame down is provided with folding stationary blade, the top of folding mount is provided with folding hole 16 and expandes hole 17, and folding hole can respectively have one or respectively have a plurality ofly with expanding the hole, be provided with U type structure on the exhibition trompil folding guide rail piece, folding guide rail piece can increase the area that drags folding locking subassembly, increases the bearing, and the cell body on the guide rail piece can be used for leading to folding locking subassembly and spacing moreover, conveniently more fast, more accurately unblock and lock.

Folding locking Assembly includes hollow tube 51, folding connecting rod 52, connecting block 53, spring 54, adapter sleeve 55, activity hole 56, connecting bolt 57, release pin 58, the hollow tube passes through connecting rod 18 with back frame fixed connection, adapter sleeve set up in the both ends of hollow tube, the one end of folding connecting rod set up in the hollow tube and with the connecting block is connected, the other end of folding connecting rod passes adapter sleeve with the release pin is connected, two be provided with between the connecting block the spring, the activity hole set up in on the hollow tube, the one end of connecting bolt is passed the activity hole with the connecting block is connected, is provided with folding knob 59 on the other end.

When the folding vehicle is folded, the two folding handles are held in the middle, the connecting bolt drives the folding connecting rods to retract inwards, the unlocking pins on the two sides are pulled out from the unfolding holes in the folding fixing pieces, the four-bar linkage is unlocked, the frame joint and the cushion joint are enclosed at the moment, the movable joints on the cushion supporting blocks are in an unlocking movable state, the whole vehicle can be pushed forwards to be unlocked, when the folding vehicle is pushed to the folding holes in the front sides of the folding fixing pieces, the middle folding spring can push the unlocking pins out and insert the folding holes, and the folded vehicle is locked.

When the frame is unfolded, two folding knobs are held, the connecting rod in the middle of the same principle can pull out the unlocking pins on the two sides from the folding fixing piece, the four-bar linkage is unlocked, the lower frame joint, the cushion joint and the movable joint are in an unlocking movable state again, the whole frame can be pulled backwards, and when the whole frame is pulled to the folding guide rail piece, the R angle of the folding guide rail piece is utilized to forcibly correct the machining error of the frame into the unfolding hole of the folding fixing piece to complete unfolding and locking of the frame.

The folding electric wheelchair also comprises accessories such as a backrest, pedals, armrests and the like and a headrest.

1) The backrest 13: the top of the rear frame is connected with a backrest through a connecting joint 17, an adjusting device for stepless adjusting the angle of the backrest is arranged between the backrest and the rear frame, the adjusting device comprises an unlocking button, an air spring, a butterfly-shaped pressure head, a pressure plate and a double control line, the unlocking button is connected with a master control end of the double control line, the front end of the pressure plate is connected with a single control end of the double control line, the top of the air spring is movably connected with the butterfly-shaped pressure head, the bottom of the air spring is movably connected with the rear frame, the unlocking button drives the pressure plate to move up and down by pulling the double control line, the up and down movement of the pressure plate drives the air spring valve needle to press down and bounce to reset, so as to complete unlocking and locking of the air spring, the unlocking button comprises a fixed seat, a button body and an adjusting stop block, and the head end of a control pull line is connected with the adjusting stop block, the button set up in on the fixing base, adjust the dog through a loose axle rotation set up in the fixing base, the button body promotes adjust the dog wind loose axle rotary motion, thereby pass through the motion of adjusting the dog is come taut or relax control is acted as go-between, and wherein, the head end of two accuse lines can the snap-on adjusting the dog, also can set up the cell body on adjusting the dog, the tip of the shell body of the end is always controlled to two accuse lines can be fixed on the fixing base, and the end of acting as go-between that sets up in the shell body is provided with the fixed block, utilizes the fixed block will control act as go-between swing joint in adjust on the dog. The unlocking button can be arranged on the armrest and on various different positions of the vehicle body and the like, so that the use requirements of different users are facilitated.

The connecting joint is arranged at the top of the rear frame, a limiting groove of a fan-shaped structure is arranged on the inner side of the connecting joint, the bottom of the backrest is rotatably arranged at the bottom of the limiting groove, the upper side edge of the limiting groove limits the angle of the backrest when the backrest is erected upwards, the lower side edge limits the angle of the backrest when the backrest is turned downwards, the angle range of the included angle between the backrest and the wheelchair seat is 95-135 degrees, a user can select any comfortable angle in the range, and the connecting joint is simple to operate and convenient to use.

The butterfly pressure head passes through the pivot with back swing joint, the clamp plate activity set up in between the two wings of the upturning of butterfly pressure head, the front end of clamp plate is the L type structure of perk upwards, the single accuse end of dual control line is passed from bottom to top the protruding portion of butterfly pressure head bottom, and the end of the shell body of single accuse end is fixed on the protruding portion, and the end of acting as go-between that sets up in the shell body is provided with fixed block 10, act as go-between pass set up in the fixed slot of clamp plate front end utilizes L type structure and fixed block to lock the acting as go-between on the clamp plate simultaneously.

When the backrest angle needs to be adjusted, the button body is pinched downwards, the button body pushes the adjusting stop block to move outwards, the double control lines are pulled upwards under the movement of the adjusting stop block, the stay wires at the single control end can also be simultaneously tensioned upwards due to the fact that the length of the stay wires in the double control lines is unchanged, the pressing plate is driven by the double control lines to move downwards and press the valve needle at the top of the air spring downwards, the air spring is in an unlocking state at the moment, a user loosens the unlocking button after adjusting the backrest angle, the adjusting stop block and the double control lines reset, the double control lines at the single control end are loosened, the pressing plate moves upwards in a resetting manner, the valve needle at the top of the air spring is also ejected upwards, the air spring is in a locking state at the moment, and the backrest is fixed at a selected angle.

2) Handrail, headrest: the two sides of the seat are provided with armrest frames 11 capable of moving up and down and armrests 12 positioned on the armrest frames, the armrests move back and forth on the armrest frames, and the top of the backrest is provided with a headrest 14 with adjustable height.

3) Pedaling: the end portion of the lower enclosing frame close to the front frame is provided with a pedal, the lower enclosing frame is connected with a pedal rod, the bottom surface of the connecting position of the pedal rod and the lower enclosing frame is provided with a pedal limiting block, the pedal limiting block is provided with a bayonet matched with the shape of the end portion of the pedal rod, when an upper blocking piece of the bayonet is arranged, the upper blocking piece is matched with an inclined plane on the protruding portion of the top end of the pedal rod to limit the movement of the pedal rod, and when the upper blocking piece is not arranged, the lower enclosing frame joint 15 used for limiting the folding angle of the pedal is arranged on the lower enclosing frame. The lower separation blade of bayonet socket cooperatees with the back of pedal pole and moves spacingly, and in this way can prevent the running-board from shaking in disorder when transferring, conveniently user's seat when simultaneously turning up. The lower end of the pedal rod is connected with the connecting end through the rotating connecting piece, and the rotating connecting piece comprises a bolt, a screw and the like, so that the pedal can be rotatably connected to the connecting piece on the supporting rod. The pedal limiting rod is arranged on the pedal rod, the pedal connecting end is provided with the arc-shaped pedal limiting groove (the size of a quarter circle), the pedal limiting rod slides in the pedal limiting groove, so as to adjust the turnover angle of the pedal plate, when the pedal rod reaches the limit position downwards, the pedal plate is driven to be lowered, and because of the influence of self gravity, the pedal automatically returns to the horizontal state, at the moment, the pedal limit rod is clamped at the upper port of the pedal limit groove, when the pedal rod drives the pedal upwards, the pedal can turn over under the action of self gravity, when the pedal limiting rod is clamped at the lower port of the pedal limiting groove when the pedal limiting rod is overturned to a certain degree, the pedal is fixed and stops overturning, the pedal limiting rod and the pedal limiting groove are used for limiting the overturning motion of the pedal, and the pedal is prevented from being overturned and swayed uncontrollably. When the maximum turnover angle of the pedal formed by combining the limiting rod and the limiting groove is 90 degrees, the use effect is optimal.

The folding electric wheelchair has the beneficial effects that: utilize folding guide rail piece, folding stationary blade and folding locking subassembly to lock and the unblock to the fold condition of wheelchair, adopt the mode of jack to improve the stability and the fastness of locking, improve the bearing capacity of whole car, in time revise and restrict the direction of motion, the position of folding locking subassembly through folding guide rail piece, use convenient, swift, stable.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A folding electric wheelchair, comprising: a front frame, a rear frame, a seat joint, a folding locking component, a folding fixing piece, a lower surrounding frame and a folding guide rail piece for bearing, guiding and limiting the folding locking component,

the bottom of the front frame is movably connected to a front wheel, the top of the front frame is connected with the seat through the seat joint, the rear end of the seat is connected with the rear frame, the bottom of the rear frame is movably arranged on a driving rear wheel, the lower enclosing frame is respectively connected with the front frame and the rear frame, the end part of the lower enclosing frame close to the rear frame is provided with the folding fixing piece, the top of the folding fixing piece is provided with a folding hole and an unfolding hole, the folding guide rail piece is arranged on the unfolding hole, the folding locking component is arranged between the two rear frames through a connecting rod, the two ends of the folding locking component are movably connected with the folding hole or the unfolding hole, so that the wheelchair is locked and unlocked in a folding way,

folding locking assembly includes hollow tube, folding connecting rod, connecting block, spring, adapter sleeve, activity hole, connecting bolt, release pin, the hollow tube passes through the connecting rod with back frame fixed connection, adapter sleeve set up in the both ends of hollow tube, the one end of folding connecting rod set up in the hollow tube and with the connecting block is connected, the other end of folding connecting rod passes adapter sleeve with the release pin is connected, two be provided with between the connecting block the spring, the activity hole set up in on the hollow tube, the one end of connecting bolt is passed the activity hole with the connecting block is connected, is provided with folding knob on the other end.

2. The folding electric wheelchair as claimed in claim 1, wherein both ends of the folding locking member protrude through the folding guide pieces to be connected to the unfolding holes or both ends of the folding locking member protrude to be connected to the folding holes when folding-locked; when the folding locking component is folded and unlocked, the two ends of the folding locking component are retracted and separated from the folding hole or the unfolding hole.

3. The folding electric wheelchair as claimed in claim 1, wherein the folding guide rail piece has a U-shaped configuration.

4. The foldable electric wheelchair as claimed in claim 1, wherein a backrest is provided on the top of the rear frame, and a height-adjustable headrest is provided on the top of the backrest.

5. A foldable electric wheelchair in accordance with claim 1, wherein the seat is provided at both sides thereof with armrest frames movable up and down and armrests provided on the armrest frames, the armrests moving back and forth on the armrest frames.

6. The foldable electric wheelchair as claimed in claim 1, wherein a pedal is disposed at an end of the lower frame adjacent to the front frame, the pedal is foldably connected to the lower frame, and a lower frame joint for limiting a folding angle of the pedal is disposed on the lower frame.

7. The foldable electric wheelchair as claimed in claim 1, wherein a cushion support block is movably disposed between the lower frame and the seat.