CN206587118U - Electronic quick access device and Electric disability vehicle - Google Patents

Abstract

The utility model discloses electronic quick access device and Electric disability vehicle, including central part, the opposite plug connector and electronic deformation mechanism that are provided at both ends with for connecting thing to be assembled on the central part, the electronic deformation mechanism drives the central part lifting or whereabouts, and drives the locking relieving mechanism that is set on the central part by the plug connector and the first thing locking to be connected or release.The utility model deft design, it is simple in construction, pass through the structure design to electronic quick access device, deformed using cylinder driving overall structure and drive locking relieving mechanism to realize with common wheelchair and quickly connected and dismantle, any extra instrument is not needed, it can carry out whenever and wherever possible, and it is simple to operate, substantially increase joint efficiency and removal efficiency；And being connected firmly for electronic quick access device and common wheelchair, is not in loosen, improves integrally-built stability and security.

Description

Electronic quick access device and Electric disability vehicle

Technical field

The utility model is related to a kind of quick access device and tricycle for the disabled, especially a kind of electronic quick access device and electronic deformity Car.

Background technology

Wheelchair is the important tool of rehabilitation, and it is not only the walking-replacing tool of limbs the disabled and handicapped personage, heavier What is wanted is them is carried out physical exercise by means of wheelchair and is participated in social activities.

Common hand wheelchair is general by wheelchair frame, wheel, brake gear and to be seated against four parts and constitutes, and hand wheelchair is common On the basis of hand wheelchair, increase manual setter, such as subject name is " wheelchair ", and the practicality of Application No. 200920127691.6 is new Type patent, what it was disclosed is exactly a kind of hand wheelchair, and not only labor intensity is big for hand wheelchair, and the speed of service of wheelchair is past It is past to be also subject to certain restrictions.

Therefore, increasing enterprise, which begins one's study, integrates the wheelchair of various power set, especially electric wheelchair, As subject name be " disabled person's electric wheel-chair vehicle ", the utility application of Application No. 02156792.1, there is disclosed A kind of three-wheel electric wheelchair, but either common hand wheelchair or this three-wheel electric wheelchair, they can only be often one Plant use state, it is impossible to switched between common wheelchair and three-wheel electric wheelchair, function phase is to single.

And if subject name is " light detachable electric wheel chair ", the utility model of Application No. 200520001999.8 Patent, there is disclosed a kind of dismountable electric wheelchair, by a connecting bracket and two bolts by the independence in controllable direction Power set and hand wheelchair link together, and it can realize the switching of electro-tricycle and common hand wheelchair, but this Plant dismountable electric wheelchair and also there are some problems：

1. the mode being attached with bolt, the requirement fastened to bolt is high, once bolt looseness, just influences whether connection Stability and traveling security, bolted mode whether assembles or dismantles, and process is all relatively cumbersome, time-consuming to take Power, and need corresponding instrument and could realize assembly and disassembly, dismounting condition is limited, it is impossible to realize that a key is assembled.

2. fit together, universal wheel, wheelchair rear wheel and steering wheel are on ground, due to independent power device The power exported during work is larger, therefore the speed of service of electric wheelchair is more much larger than hand speed, and now electric wheelchair And do not need universal wheel to come under adjustment direction, therefore quick running status, the abrasion of universal wheel is accelerated, or even cause universal wheel Failure is damaged, just can not normally be used when being disassembled into common wheelchair, the performance of common wheelchair is influenceed；

3. although universal wheel can be at any time according to the control deflecting of steering wheel, it more or less produces certain resistance Power, influences user's control steering wheel, seriously, once universal wheel engages or occurred the situation of deflecting not in time suddenly, then easily Make the direction of the uncontrollable steering wheel of user, cause accident etc., there is certain potential safety hazard.

Utility model content

The purpose of this utility model is exactly electronic to be connect soon there is provided one kind to solve the above-mentioned problems in the prior art Device and the Electric disability vehicle using the electronic quick access device.

The purpose of this utility model is achieved through the following technical solutions：

It is opposite on electronic quick access device, including central part, the central part to be provided at both ends with for connecting thing to be assembled Plug connector and electronic deformation mechanism, the electronic deformation mechanism drives the central part lifting or whereabouts, and drive it is described in The locking relieving mechanism set in central member is by the plug connector and the first thing locking to be connected or release.

It is preferred that, described electronic quick access device, wherein：The central part and the plug connector bolt connection.

It is preferred that, described electronic quick access device, wherein：The bottom of the central part is provided with Collapsible support lever.

It is preferred that, described electronic quick access device, wherein：The electronic deformation mechanism includes upper connecting rod, lower link, cylinder And control device, the pivotally connected central part in same one end of the upper connecting rod and lower link, they are with the central part Pivot connection point has difference in height, the cylinder and control device connection and is located between the upper connecting rod and lower link, The pivotally connected upper connecting rod of telescopic end of the cylinder, the pivotally connected lower link of its tail end, the telescopic end and upper company First pivot connection point of bar connection is less than the second pivot company that the tail end is connected with lower link to the distance of the central part Distance of the contact to the central part.

It is preferred that, described electronic quick access device, wherein：The upper connecting rod and lower link are bow, and they Inner concave is oppositely arranged.

It is preferred that, described electronic quick access device, wherein：The locking relieving mechanism includes what is set on the central part Above the plug connector and keep in the spacing hole in gap, the spacing hole the telescopically lock pin of grafting one,

Under release conditions, the end of the lock pin is located in the spacing hole,

Under lockup state, the end of the lock pin extend into opened up on the plug connector corresponding with the spacing hole In through hole.

It is preferred that, described electronic quick access device, wherein：The locking relieving mechanism also include connecting the lock pin and The driving member of upper connecting rod, the driving member is under the driving of the upper connecting rod to be fixed on the rotating shaft on the central part as axle center Rotation simultaneously drives flexible above and below the lock pin.

It is preferred that, described electronic quick access device, wherein：Locking is arranged with the upper end outer circumferential face of the lock pin Groove, the first U-lag end of the driving member is connected in the fastening groove；Fixing axle is provided with the upper connecting rod, it is described solid Dead axle is located at the pivot connection point rear of the upper connecting rod and central part, and its height is higher than the height of the rotating shaft, the biography Second U-lag end of moving part connects the fixing axle.

Electric disability vehicle, including any of the above-described electronic quick access device, electric traction head and common wheelchair, it is described electronic Deformation mechanism connects the electric traction head, the plug connector and institute by the pivot connector set on the electric traction head State Coupling connection fixed on common wheelchair；

Under release conditions, the universal wheel and trailing wheel of the driving wheel of the electric traction head and the common wheelchair are positioned at same On horizontal plane；

Under lockup state, driving wheel and the trailing wheel of the electric traction head are in same level, and described ten thousand To the horizontal plane where wheel higher than horizontal plane where the steering wheel and trailing wheel.

It is preferred that, described Electric disability vehicle, wherein：Control electric pushing-aid system is provided with the handle of the common wheelchair The controlling organization of system.

The advantage of technical solutions of the utility model is mainly reflected in：

1. the utility model deft design, simple in construction, by the structure design to electronic quick access device, driven using cylinder Dynamic overall structure deform and drives that locking relieving mechanism is realized and common wheelchair quickly connection and is dismantled, it is not necessary to it is any additionally Instrument, can be carried out whenever and wherever possible, and simple to operate, and a key-lock is stopped and dismantled, and substantially increase joint efficiency and dismounting is imitated Rate；And being connected firmly for electronic quick access device and common wheelchair, is not in loosen, improve integrally-built stability and Security.

2. under assembled state, universal wheel lifting can be made to depart from ground, therefore abrasion will not be produced in the process of running, protect The normal operation function of wheelchair is demonstrate,proved；On the other hand hanging universal wheel also will not produce resistance to driving so that user's control Direction is lighter, designs humanized, improves the safety and stability of driving.

3. due to the architectural feature of quick access device, its latter linked part is except common hand wheelchair or commonly The Rear frame of bicycle, tricycle and electric car, its front portion connection except electric traction head or handle-bar etc. Other mechanisms, so that the application of whole quick access device is more extensive, the overall structure mode of texturing after connection is more, carries significantly High applicability and feature.

4. Electric disability vehicle of the present utility model, moulded attractive in appearance, succinct, three main bodies part relatively independent can be opened Come, therefore when certain partial fault, maintenance facility.

Brief description of the drawings

Fig. 1 is the stereogram of the electronic quick access device of the utility model；

Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1；

Fig. 3 is the three-dimensional structure diagram of the electronic quick access device of the utility model；

Fig. 4 is the stereogram of the utility model Electric disability vehicle；

Fig. 5 is the non-locking view of Electric disability vehicle of the present utility model；

Fig. 6 is Electric disability vehicle lockup state schematic diagram of the present utility model；

Fig. 7 is the assembled state schematic diagram of electronic quick access device of the present utility model and Coupling.

Embodiment

The purpose of this utility model, advantage and feature, will be schemed by the non-limitative illustration of preferred embodiment below Show and explain.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent substitution or wait Technical scheme formed by effect conversion, all fall within the utility model it is claimed within the scope of.

The utility model discloses a kind of Electric disability vehicle, as shown in accompanying drawing 4- accompanying drawings 6, including electric traction first 6, electronic Quick access device and common wheelchair 7, the electric traction first 6 are assembled with the common wheelchair 7 by the electronic quick access device Integrally.

Specifically, as shown in accompanying drawing 1- accompanying drawings 3, the electric traction first 6 includes front frame 61, and the front frame 61 can be with It is the front frame of common electric bicycle or bicycle, preferably described front frame 61 is foldable chassis, its specific bag Include rotatably arranged with there is steering tube 612 in supporting sleeve 611, the supporting sleeve 611, the steering tube 612 passes through locking Part 613 is connected with the leading standpipe 614 that can be stretched in the supporting sleeve 611, and the upper end of the leading standpipe 614 is provided with Speed regulating handle 62 and brake hand are provided with tap 615, described leading 615 64, before the lower end of the steering tube 612 is provided with Fork 616, the end of the front fork 616, which is installed in driving wheel 66, the driving wheel 66, is integrated with wheel hub motor, with wheel hub motor Driving wheel 66 be prior art, repeat no more herein, certain motor can also be connected and driven by other structures The driving wheel 66.

The supporting sleeve 611 is additionally provided with battery installing rack 65 on the side outer wall away from the common wheelchair 7, described It is provided with battery installing rack 65 for the battery bag 63 for each power elements.

Certainly, except structure preferred in the present embodiment, the electric traction first 6 can also be known any front wheel driving The structure of dynamic electric car vehicle head part, will not be repeated here.

As shown in Figure 3, on the supporting sleeve 611 towards being fixedly provided with one at the side outer wall of the common wheelchair 7 For the pivot connector 8 being connected with the electronic quick access device, respectively symmetrically set on two side walls of the pivot connector 8 It is equipped with two pivot attachment apertures 661 with difference in height.

As shown in Figure 1, the electronic quick access device includes opposite on central part 1, the central part 1 be provided at both ends with For the electronic deformation mechanism 2 for connecting the plug connector 4 of thing to be assembled and being connected with the pivot connector 8, the electronic deformation Mechanism 2 drives the lifting of central part 1 or whereabouts, and drives the locking relieving mechanism 3 set on the central part 1 in described The locking machine for releasing that will be set during 1 lifting of central member on the plug connector 4 and first thing locking to be connected or the driving central part 1 Structure 3 discharges the plug connector 4 and first thing to be connected when the central part 1 falls after rise.

Specifically, the side of the central part 1 towards the common wheelchair 7 is provided with mounting groove, the mounting groove interpolation The plug connector 4 is connected to, and the both sides side-walls of the mounting groove are provided with screwed hole, and the plug connector 4 is solid by bolt It is scheduled in the mounting groove, the through hole coordinated with the locking relieving mechanism 3 is additionally provided with the plug connector 4（Do not show in figure Go out）.

As shown in Figure 1, the central part 1 dorsad the common wheelchair 7 side include pivot mounting, the pivot Two pivot attachment apertures 11 with difference in height are respectively symmetrically provided with two side walls of installation portion, two described pivotally connected The spacing of two pivot attachment apertures 661 of the spacing in hole 11 with being set on the pivot connector 8 is equal.

On the central part 1 be located on high-order pivot attachment apertures 11 and the pivot connector 8 be located at it is high-order Distinguish at pivot attachment apertures 661 on one end of the upper connecting rod 21 in the pivotally connected electronic deformation mechanism 2, the central part 1 The pivot attachment apertures 11 and the pivot connector 8 positioned at low level on the pivot attachment apertures 661 positioned at low level at distinguish pivot Axle connects one end of the lower link 22 in the electronic deformation mechanism 2；Also, the upper connecting rod 21 and lower link 22 are arc Bar, and their inner concave is oppositely arranged, such setting is to provide bigger installation control and motion to drive device Space.

The cylinder of their deformations of one driving is set as shown in accompanying drawing 1, accompanying drawing 3, between the upper connecting rod 21 and lower link 22 23, detailed, the upper connecting rod 21 is towards being provided with the first pivot connector 211 on the outer wall of the lower link 22, and described the During one pivot connection 211 is located at the upper connecting rod 21 using symmetry axis as the both sides of boundary on one side of something of the close central part 1, The lower link 22 is towards the second pivot connector 221 is provided with the outer wall of the upper connecting rod 21, and described second is pivotally connected Part 221 be located at the lower link 22 using symmetry axis for the both sides of boundary on half of away from the central part 1, therefore described the The distance of one pivot connector 211 to the central part 1 be less than second pivot connector 221 to the central part 1 away from From the telescopic end 231 of the pivotally connected cylinder 23 of the first pivot connector 211, the pivot of the second pivot connector 221 Axle connects the tail end 232 of the cylinder.

The connection of cylinder 23 controls the control device that its telescopic end is extended and retracted（Not shown in figure）, the control dress Put the control button that can include being arranged on described leading 615, naturally it is also possible to be to carry out institute by other feasible devices The control of cylinder 23 is stated, the touch screen of control software is such as installed, or carry out remotely by smart machines such as mobile phone, PAD Control.

Further, as shown in accompanying drawing 2, accompanying drawing 3, one end that the upper connecting rod 21 is connected with the central part 1 is additionally provided with One fixing axle 35, the fixing axle 35 is located at the rear of the upper connecting rod 21 and the pivot connection point of central part 1, i.e., described fixation The distance of axle 35 to the electric traction first 6 is more than the pivot connection point of the upper connecting rod 21 and central part 1 and electronic led to described The distance of leader 6, the fixing axle 35 connects the driving member 33 in the locking relieving mechanism 3.

Specifically, the driving member 33 include integrally formed first U-lag end 331, the second U-lag end 332 and in Between annular portion 333, its global approximation be V-arrangement, the second U-lag end 332 i.e. be connected with the fixing axle 35；And the centre Annular portion 333 be sleeved in a rotating shaft 34 being arranged on the central part 1 and can with the rotating shaft 34 be axle center rotation, The height of the rotating shaft 34 is less than the height of the fixing axle 35, meanwhile, the first U-lag end 331 is connected to lock pin 32 Upper end outer circumferential face in recessed fastening groove 321 so that the driving member 33 can be under the driving of the upper connecting rod 21 Drive that the lock pin 32 sets on the central part 1 be located at the top of plug connector 4 and keep the plug connector 4 between Stretched in the spacing hole 31 of gap 60, the spacing hole 31 is matched with the through hole on the plug connector 4.

Also, under release conditions, the end of the lock pin 32 is located in the spacing hole 31；It is described under lockup state The end of lock pin 32 is extend into the through hole opened up on the plug connector 4.

Further, as shown in Figure 1, what the electronic quick access device also bottom including central part 1 was set is foldable Support bar 5, the foldable structure of the Collapsible support lever 5 can be known various structures, will not be repeated here, described to roll over Folded support bar 5 coordinates with the driving wheel 66 affected on drawing head 6 makes it after electronic quick access device is connected electric traction first 6 Keep stable standing state, consequently facilitating common wheelchair 7 and the electronic quick access device are assemblied together.

As shown in accompanying drawing 4- accompanying drawings 7, the plug connector 4 is connected with Coupling 9 fixed on the common wheelchair 7, described The upper end surface of Coupling 9 offers the spacing hole matched with the through hole on the plug connector 4（Not shown in figure）, it is assembled in one When rising, the upper surface of the plug connector 9 is embedded at the gap 60 between the locking hole 31 and plug connector 4, and by described The through hole that lock pin 32 in locking relieving mechanism 3 is stretched into or exited on the plug connector 4 realizes Coupling 9 and plug connector 4 Fastening and release.

Further, it is contemplated that the people of push wheel chair is the elderly sometimes, when upward slope, common wheelchair is promoted often to compare It is harder, and it is provided with control electric pushing-aid in the operation that the elderly often can not be calm, therefore the handle of the common wheelchair 7 The controlling organization of system（Not shown in figure）, the controlling organization of the electric pushing-aid system can be provided in belonging on handle Control button or speed-regulating switch etc., are herein known technology, will not be repeated here.

And when needing to be assembled into Electric disability vehicle, its detailed process is as follows：

It is first that the free end of the upper connecting rod 21 of the electronic quick access device and lower link 22 is pivotally connected by bolt respectively On connector 66 on the electric traction first 6, the assembling of the electric traction first 6 and electronic quick access device is realized.

Then, the Coupling 9 set on the common wheelchair 7 is sleeved on the periphery of the plug connector 4, and made described Spacing hole on Coupling 9 is corresponding with the through hole on the plug connector 4, although now common wheelchair 7 and the electronic fast tipping Put and be assembled into one, but be due to that the locking relieving mechanism 3 does not fix their lockings, therefore be still between them Mobilizable, and now, as release conditions are corresponding, as shown in Figure 5, the driving wheel 66 of the electric traction first 6 and institute The universal wheel 71 and trailing wheel 72 for stating common wheelchair 7 are located in same level 30.

Then, the cylinder is started by control device, stretches out its telescopic end 231, due to the tail end 232 of the cylinder It is support with second pivot connector 221, and the telescopic end 231 constantly stretches out, and by taking accompanying drawing 3 as an example, due to cylinder Oblique upper right side is set, therefore one end that the telescopic end 231 can be connected to the upper connecting rod 21 with the central part 1 applies one The individual thrust to upper right side, so that the upper connecting rod 21 is using the pivot connection point of it and the pivot connector 8 as the axle center inverse time Pin rotation, and it is upturned with one end that the central part 1 is connected.

Upwarped along with the upper connecting rod 21 with one end that the central part 1 is connected, the upper connecting rod 21 drives the biography Moving part 33 is rotated clockwise, now, and the second U-lag end 332 of the driving member 33 applies one downwards to the lock pin 32 Pressure so that the lock pin 32 is moved down and extend into the through hole on the plug connector 4 along the locking hole 31, And then fix the plug connector 4 and Coupling 9, it can not now continue activity between them.

In addition, as the upper connecting rod 21 is upwarped with one end that the central part 1 is connected, the central part 1 follows described The upward lifting of upper connecting rod 21 simultaneously drives the lower link 22 using its pivot connection point with the pivot connector 8 as the axle center inverse time Pin rotation, due to the upward lifting of the central part 1, it drives the lifting of plug connector 4, so that the lifting of Coupling 9 is driven, And then the common wheelchair 7 and one end that the central part 1 is connected is turned clockwise tilting, and make the common wheelchair 7 Universal wheel 71 is lifted vacantly, now, as shown in Figure 6, and driving wheel 66 and the trailing wheel 72 of the electric traction first 6 are in In same level 40, and the horizontal plane 40 at the place of the universal wheel 81 is higher than the driving wheel 66 and the place horizontal plane of trailing wheel 72 50。

And when needing to dismantle the Electric disability vehicle assembled, its detailed process is as follows：

By taking accompanying drawing 3 as an example, the telescopic end 231 for making the cylinder 23 by control device bounces back, so as to pull the upper company Bar 21 is turned clockwise using it with the pivot connection point that the pivot connector 8 is connected as axle center, thus the upper connecting rod 21 with One end that the central part 1 is connected falls, due to one end whereabouts that the upper connecting rod 21 is connected with the central part 1, it is described in Central member 1 also falls, and the plug connector 4 and Coupling 9 is fallen so that the common wheelchair 7 be connected with central part one Rotate counterclockwise is held, and then the universal wheel 71 is dropped to ground.

Meanwhile, the one end being connected with the upper connecting rod 21 with the central part 1 falls, and it drives the driving member inverse time Pin rotates, and pulls the lock pin 32 to be exited from the through hole on the plug connector 4, now the plug connector 4 and Coupling 9 No longer limited by the lock pin 4, the Coupling 9 can be extracted from the plug connector 4, make the common wheelchair 7 Split with electronic quick access device.

Finally, electric traction first 6 and electronic quick access device are taken apart and overall fractionation can be achieved.

Certainly, except the Electric disability vehicle in above-described embodiment, in other embodiments, the electronic quick access device also may be used To connect the front-wheel mechanism and trailing wheel mechanism formation ordinary bicycle of ordinary bicycle, or the quick access device can also be connected The powered rear wheels mechanism of ordinary bicycle and common electric car, so as to become common electric motor car with two wheels etc., as long as corresponding mechanism In be provided with the Coupling 9 that is matched with the plug connector 4 and with the upper connecting rod 21 and lower link 22 be coupled it is pivotally connected The product or structure to form needs can be coupled in part 8 with electronic quick access device of the present utility model.

The utility model still has numerous embodiments, all technologies formed by all use equivalents or equivalent transformation Scheme, all falls within protection domain of the present utility model.

Claims (10)

1. electronic quick access device, it is characterised in that：Including central part（1）, the central part（1）It is upper opposite to be provided at both ends with use In the plug connector for connecting thing to be assembled（4）And electronic deformation mechanism（2）, the electronic deformation mechanism（2）Drive the central part （1）Lifting or whereabouts, and drive the central part（1）The locking relieving mechanism of upper setting（3）By the plug connector（4）With first Thing locking to be connected or release.

2. electronic quick access device according to claim 1, it is characterised in that：The central part（1）With the plug connector（4） Bolt connection.

3. electronic quick access device according to claim 1, it is characterised in that：The central part（1）Be provided with can for bottom Folding support bar（5）.

4. electronic quick access device according to claim 1, it is characterised in that：The electronic deformation mechanism（2）Including upper company Bar（21）, lower link（22）, cylinder（23）And control device, the upper connecting rod（21）And lower link（22）The equal pivot in same one end Connect the central part（1）, they are with the central part（1）Pivot connection point there is difference in height, the cylinder（23）With institute State control device connection and positioned at the upper connecting rod（21）And lower link（22）Between, the cylinder（23）Telescopic end（231） The pivotally connected upper connecting rod（21）, its tail end（232）The pivotally connected lower link（22）, the telescopic end（231）With it is upper Connecting rod（21）First pivot connection point of connection（10）To the central part（1）Distance be less than the tail end（232）With lower company Bar（22）Second pivot connection point of connection（20）To the central part（1）Distance.

5. electronic quick access device according to claim 4, it is characterised in that：The upper connecting rod（21）And lower link（22） For bow, and their inner concave is oppositely arranged.

6. the electronic quick access device according to claim 4 or 5, it is characterised in that：The locking relieving mechanism（3）Including institute State central part（1）Upper setting be located at the plug connector（4）Top and the spacing hole for keeping gap（31）, the spacing hole（31） The interior telescopically lock pin of grafting one（32）,

Under release conditions, the lock pin（32）End be located at the spacing hole（31）It is interior,

Under lockup state, the lock pin（32）End extend into the plug connector（4）On it is opening up with the spacing hole （31）In corresponding through hole.

7. electronic quick access device according to claim 6, it is characterised in that：The locking relieving mechanism（3）Also include connecting Connect the lock pin（32）And upper connecting rod（21）Driving member（33）, the driving member（33）In the upper connecting rod（21）Driving Under to be fixed on the central part（1）On rotating shaft（34）For axle center rotation and drive the lock pin（32）Stretch up and down.

8. electronic quick access device according to claim 7, it is characterised in that：The lock pin（32）Upper end outer circumferential face Place is arranged with fastening groove（321）, the driving member（33）The first U-lag end（331）It is connected to the fastening groove（321）In； The upper connecting rod（21）On be provided with fixing axle（35）, the fixing axle（35）Positioned at the upper connecting rod（21）And central part（1） Pivot connection point rear, and its height be higher than the rotating shaft（34）Height, the driving member（33）The second U-lag end （332）Connect the fixing axle（35）.

9. Electric disability vehicle, it is characterised in that：Including any described electronic quick access devices of claim 1-8, electric traction head （6）And common wheelchair（7）, the electronic deformation mechanism（2）Pass through the electric traction head（6）The pivot connector of upper setting （8）Connect the electric traction head（6）, the plug connector（4）With the common wheelchair（7）Upper fixed Coupling（9）Connection；

Under release conditions, the electric traction head（6）Driving wheel（66）With the common wheelchair（7）Universal wheel（71）And after Wheel（72）Positioned at same level（30）On；

Under lockup state, the electric traction head（6）Driving wheel（66）With the trailing wheel（72）In same level（40） On, and the universal wheel（71）The horizontal plane at place（40）Higher than the driving wheel（66）And trailing wheel（72）Place horizontal plane （50）.

10. Electric disability vehicle according to claim 9, it is characterised in that：The common wheelchair（7）Handle at be provided with Control the controlling organization of electric pushing-aid system.