CN109223329B - Getting-on/off auxiliary device and automobile comprising same - Google Patents

Abstract

The invention provides an auxiliary device for getting on and off the car and a car, including: a wheelchair, which includes a lower bracket, an upper bracket arranged on the lower bracket by using a detachable connection structure, a seat cushion arranged on the upper bracket, and a seat cushion arranged on the upper bracket. The guide wheel at the bottom of the seat cushion, and the adjustment mechanism arranged on the seat cushion and used to drive the guide wheel up and down; the bottom of the seat is provided with a track connected with the front and rear adjustment mechanism of the seat in the car, and the seat cushion is connected with the seat cushion. The seat is compatible with each other, and a locking structure is provided between the seat and the cushion; and a platform mechanism, which includes a transition platform arranged on the floor of the vehicle and located in front of the seat, and a The drive mechanism is located at the bottom of the transition platform and is used to drive the transition platform to move horizontally, and the top of the transition platform is provided with an arc-shaped track that cooperates with the guide wheels. The auxiliary device for getting on and off the car in the present invention can greatly facilitate the getting on and off of the car for disabled people, and the operation of getting on and off the car is simple and the experience is high.

Description

Auxiliary device for getting on and off the vehicle and a motor vehicle containing the auxiliary device for getting on and off the vehicle

technical field

The invention relates to the technical field of automobiles, in particular to an auxiliary device for getting on and off a car and an automobile containing the auxiliary device for getting on and off a car.

Background technique

With the rapid development of China's social economy, people's lives are becoming more and more colorful, and the quality of life of the disabled has also attracted much attention. Having a convenient, free and comfortable travel tool is one of their most urgent wishes.

There is no doubt that, as the most convenient means of transportation recognized by people, the car has undoubtedly become the first choice for people with disabilities to travel. However, in the prior art, the cars currently used, even the special cars for the disabled, lack a set of reasonable auxiliary devices for getting on and off the car, which makes it very inconvenient for the disabled to get on and off the car, even if there is a special person to help them get on the car, it is also extremely difficult.

Contents of the invention

Based on this, the object of the present invention is to provide a getting on and off auxiliary device and a car including the getting on and off assist device, so as to solve the technical problem of the extremely inconvenient getting on and off of the disabled person in the prior art.

An assisting device for getting on and off the vehicle, comprising:

A wheelchair comprising a lower bracket, an upper bracket arranged on the lower bracket by a detachable connection structure, a seat cushion arranged on the upper bracket, a guide wheel arranged at the bottom of the seat cushion, and a seat cushion arranged on the seat cushion It is also used to drive the adjustment mechanism for the lifting of the guide wheel;

A seat, the bottom of which is provided with a track connected to the front and rear adjustment mechanism of the seat in the vehicle, the seat cushion is compatible with the seat, and a locking structure is provided between the seat and the seat cushion; and

A platform mechanism, which includes a transition platform located on the floor of the vehicle and in front of the seat, and a drive mechanism located at the bottom of the transition platform and used to drive the transition platform to move horizontally, and the top of the transition platform is set There is an arc track matched with the guide wheel.

When the above-mentioned auxiliary device for getting on and off the car is used, the door can be opened, and then the transition platform can be extended from the vehicle by the driving mechanism, and then the wheelchair can be moved to move the seat cushion above the transition platform, and the guide wheels can be aligned with the arc on the top of the transition platform. track, and then manipulate the adjustment mechanism to lower the guide wheel into the arc track, then separate the upper and lower brackets of the wheelchair to separate the seat cushion, and then use the driving mechanism to pull the transition platform together with the seat cushion back into the car, and then move the seat cushion to Make the guide wheel roll in the arc-shaped track. As the seat cushion moves in the arc-shaped track, the seat cushion will continue to turn. When the seat cushion turns to face the front of the car, the seat is controlled to move forward so that the seat cushion and the seat are compatible. Then use the locking structure to fix the seat cushion on the seat to complete the action of getting on the car. Therefore, the assisting device for getting on and off the car can greatly facilitate the disabled people to get on and off the car, and the operation of getting on and off the car is simple and the experience is high.

Further, the lower support includes several first pillars, the upper support includes several second pillars, each of the first pillars is docked with one of the second pillars through one of the detachable connection structures.

Further, the detachable connection structure includes:

A sleeve, which is sleeved on the first pillar and the second pillar, the wall of the sleeve is provided with a passing groove and a locking groove, and the length direction of the passing groove is along the length of the sleeve the axial arrangement of the locking groove, the length direction of the locking groove is perpendicular to the axial direction of the sleeve, and the passing groove communicates with the locking groove; and

A locking member, which includes a cylinder and a block, the first pillar is provided with a mounting hole, one end of the cylinder is detachably inserted into the mounting hole, and can be rotated relative to the mounting hole , the block is cross-connected with the other end of the column in the shape of a "ten", and the block is stuck in the locking groove. When the block is rotated to be parallel to the passing groove, The locking member can relatively move in the passing groove.

Further, the detachable connection structure also includes:

A plug sleeve, an annular groove is provided on the outer wall of the cylinder, the plug sleeve is sleeved on the cylinder and embedded in the groove, the plug sleeve is inserted into the installation hole, And it is in close contact with the inner wall of the installation hole.

Further, the bottom of the seat cushion is provided with a receiving groove, the opposite side walls of the receiving groove are respectively provided with a lifting guide rail, and the lifting guide rail is provided with two locking parts along the longitudinal direction, one of the lifting guide rails runs through The seat cushion, the adjustment mechanism includes:

a guide wheel bracket, which is accommodated in the receiving groove, and the guide wheel is arranged at the bottom of the guide wheel bracket; and

A support shaft, which is installed on the guide wheel bracket, and erected on the two lifting guide rails, and can slide along the lifting guide rails to engage with any of the locking parts, and the support One end of the shaft passes through the through lifting guide rail and extends to the front of the seat cushion.

Further, the adjustment mechanism also includes a pair of limit assemblies, one limit assembly is arranged in each of the lifting guide rails, and the limit assemblies include:

A pressing plate, which is arranged obliquely in the lifting guide rail, and its front face faces the two locking parts;

Several springs, which are connected between the back of the extrusion plate and the inner wall of the lifting guide rail, when the support shaft is stuck on any of the locking parts, the extrusion plate will cooperate with the locking One part presses the support shaft, and when the support shaft moves to another locking part, the press is pushed away from the press plate.

Further, the drive mechanism includes:

Two guide rods arranged in parallel, the bottom of the transition platform is slid on the guide rods;

two racks arranged in parallel, which are fixed on the bottom of the transition platform;

A gear shaft, two ends of which are respectively provided with a driven gear, and each said driven gear is meshed with a said rack;

a driving gear meshed with one of the driven gears; and

A driving motor, the driving gear is sleeved on the output shaft of the driving motor.

Further, the bottom of the seat cushion is provided with several universal balls, and when the guide wheel rolls on the track, the universal balls are rollingly connected with the top of the transition platform.

Further, the wheelchair also includes a pedal mechanism, and the pedal mechanism includes:

a pivot shaft, which is rotatably mounted on the front side of the cushion;

two connecting rods, which are symmetrically arranged at both ends of the pivot shaft;

two footrests, one at the end of each connecting rod; and

The rotary motor is arranged on the seat cushion, and the output shaft is connected to the pivot shaft.

Another aspect of the present invention also proposes a car, which includes a car body and the above-mentioned auxiliary device for getting on and off.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the wheelchair in the first embodiment of the present invention;

Figure 2 is an enlarged view of the I place in the middle of Figure 1;

FIG. 3 is an assembly and exploded schematic diagram of the detachable connection structure in the first embodiment of the present invention;

Fig. 4 is a three-dimensional schematic diagram of another angle of the wheelchair in the first embodiment of the present invention;

Figure 5 is an enlarged view of II in Figure 4;

Fig. 6 is a schematic perspective view of the adjustment mechanism in the first embodiment of the present invention;

Fig. 7 is a three-dimensional schematic view of the seat in the first embodiment of the present invention;

Fig. 8 is a schematic perspective view of the platform mechanism in the first embodiment of the present invention;

Fig. 9 is a schematic perspective view of another angle of the platform mechanism in the first embodiment of the present invention;

Fig. 10 is a schematic diagram illustrating the application of the assisting device for getting on and off the vehicle in the first embodiment of the present invention;

Fig. 11 is a schematic structural view of the cushion in the second embodiment of the present invention.

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 to FIG. 9 , which show the assisting device for getting on and off the vehicle in the first embodiment of the present invention, including a wheelchair 10 , a seat 20 and a platform mechanism 30 .

The wheelchair 10 includes a lower bracket 11, an upper bracket 13 arranged on the lower bracket 11 by a detachable connecting structure 12, a cushion 14 arranged on the upper bracket 13, and a guide wheel arranged at the bottom of the cushion 14 15, and an adjustment mechanism 16 arranged on the seat cushion 14 and used to drive the guide wheel 15 up and down.

Wherein, the lower bracket 11 includes four first pillars 111 and two rims 112, the four first pillars 111 are connected in pairs, and the two first pillars 111 are connected to form a whole. The rim 112 and the bottom of the first pillar 111 are also provided with universal wheels. The upper bracket 13 includes four second pillars 131 arranged around the cushion 14, the bottom of the second pillar 131 is lower than the bottom of the cushion 14, and each of the first pillars 111 passes through one of the first pillars 131. The detachable connection structure 12 is docked with one of the second pillars 131 .

Specifically, the detachable connection structure 12 includes a sleeve 121, a locking member 122 and a plug sleeve 123. The sleeve 121 is sleeved on the first pillar 111 and the second pillar 121. The sleeve The cylinder wall of the cylinder 121 is provided with a passing groove 1211 and a locking groove 1212, the length direction of the passing groove 1211 is arranged along the axial direction of the sleeve 121, and the length direction of the locking groove 1212 is perpendicular to the sleeve 121 , and the passing groove 1211 communicates with one end of the locking groove 1212 . The locking member 122 includes a cylinder 1221 and a block 1222. The first pillar 111 is provided with a mounting hole 1111. One end of the cylinder 1221 is detachably inserted into the mounting hole 1111, and can be Rotating relative to the mounting hole 1111, the clamping block 1222 is cross-connected with the other end of the cylinder 1221 in the shape of a "cross", and the clamping block 1222 is clamped in the locking groove 1212, when the clamping When the block 1222 is rotated to be parallel to the passing groove 1211 , the locking member 122 can relatively move in the passing groove 1211 . The outer wall of the cylinder 1221 is provided with an annular groove, the plug sleeve 123 is sheathed on the cylinder 121 and embedded in the groove, and the plug sleeve 123 is inserted into the installation hole 1111 In the middle, it is in close contact with the inner wall of the installation hole 111 .

It can be understood that when the cylinder 121 is partly pulled out from the installation hole 1111, the block 1222 is disengaged from the locking groove 1212, at this time, the cylinder 121 is rotated 90°, so that the block 1222 is rotated to be parallel to the passage groove 1211, Then the sleeve 121 can be moved downwards so that the first support 111 and the second support 131 are disconnected, and the upper support 13 is separated from the lower support 12; 131 is docked first, and then move the sleeve 121 upward until the block 1222 is facing the locking groove 1212. At this time, the sleeve 121 is set on the first pillar 111 and the second pillar 131, and then the cylinder 121 is reversely rotated by 90 ° and insert it back into the mounting hole 1111 to fix the sleeve 121, and then fix the upper bracket 13 and the lower bracket 12. Wherein, under the action of the plug sleeve 123, the pull-out resistance of the cylinder 121 is increased, preventing the cylinder 121 from being easily pulled out completely from the hole.

Wherein, the bottom of the seat cushion 14 is provided with a receiving groove 141, and the opposite side walls of the receiving groove 141 are respectively provided with a lifting guide rail 1411, and the lifting guide rail 1411 is provided with two locking parts A along the longitudinal direction, one of which is The lifting guide rail 1411 runs through the cushion 14 .

Specifically, the adjustment mechanism 16 includes a guide wheel bracket 161 and a support shaft 162, the guide wheel bracket 161 is accommodated in the receiving groove 141, and the guide wheel 15 is arranged on the guide wheel bracket 161. bottom. The support shaft 162 is passed through the guide wheel bracket 161, and is erected on the two lifting guide rails 1411, and can slide along the lifting guide rails 1411 to engage with any one of the locking parts A, And one end of the support shaft 162 passes through the lifting guide rail 1411 and extends to the front of the seat cushion 14 .

It should be pointed out that under normal circumstances, the support shaft 162 is stuck at the upper locking part A, and the guide wheel 15 is accommodated in the receiving groove 141. When the guide wheel 15 needs to be exposed, the support shaft 162 only needs to be moved to make the It only needs to be moved to the upper locking position A, and at this time, the guide wheel 15 protrudes from the receiving groove 141 .

In addition, the wheelchair 10 also includes a pedal mechanism 17, the pedal mechanism 17 includes a pivot shaft 171, two connecting rods 172, two pedals 173 and a rotating motor 174, the pivot The connecting shaft 171 is rotatably mounted on the front side of the seat cushion 14, two connecting rods 172 are arranged symmetrically at both ends of the pivoting shaft 171, and a pedal 173 is arranged at the end of each connecting rod 172 , the rotating motor 174 is disposed on the seat cushion 14 , and the output shaft is connected to the pivot shaft 171 . When the rotating motor 174 rotates, it will drive the pivot shaft 171 to rotate, thereby driving the connecting rod 172 to rotate around the pivot shaft 171 , thereby realizing the lifting of the pedal 173 .

Described seat 20 is installed in the car, and its bottom is provided with the track 21 that is connected with seat front and rear adjustment mechanism (can adopt the front and rear adjustment mechanism of existing driver's seat) in the car. The seat cushion 14 is compatible with the seat 20 , that is, the space surrounded by the seat 20 just accommodates the seat cushion 14 . And a locking structure is provided between the seat 20 and the seat cushion 14, and the locking structure is composed of a positioning pin 22, a first pin hole 23 provided on the seat 20, and a seat cushion 14. The second pin hole 142 is formed. When locking, just insert the positioning pin 22 into the first pin hole 23 and the second pin hole 142 . During specific implementation, in order to ensure that there is enough space for entering and exiting at the rear, lengthened guide rails may be used to increase the range of front and rear adjustment of the seat 20 .

The transition platform mechanism 30 is installed on the interior floor of the vehicle, which includes a transition platform 31 located on the interior floor of the vehicle and located in front of the seat, and a transition platform 31 located at the bottom of the transition platform 31 and used to drive the transition platform 31 The driving mechanism 32 that moves horizontally, the top of the transition platform 31 is provided with an arc-shaped track 311 that cooperates with the guide wheel 15, and the width of the seat cushion 14 is greater than the width of the transition platform 31, which is convenient for position adjustment when getting on and off the vehicle .

It should be pointed out that the curvature of the arc track 311 should meet the requirement that when the seat cushion 14 moves on the arc track 311 , it can be turned to face the front of the vehicle. For example, when the seat cushion 14 enters vertically, the arc of the arc track 311 should be greater than or equal to 90°, so as to ensure that the seat cushion 14 can turn to the front of the vehicle.

Wherein, the driving mechanism 32 includes two guide rods 321, two racks 322, a pinion shaft 323, a driving gear 324 and a drive motor 325, the guide rods 321 are fixed on the vehicle body, and the two The guide rods 321 are arranged in parallel, and the bottom of the transition platform 31 is slidably mounted on the guide rods 321 . The racks 322 are fixed on the bottom of the transition platform 31 , and the two racks are arranged in parallel. The middle part of the gear shaft 323 is rotatably mounted on the vehicle body by a bearing, and a driven gear 3231 is respectively provided at both ends thereof, and each driven gear 3231 is meshed with a rack 322 . The driving motor 325 is fixed on the vehicle body, the driving gear 324 is sleeved on the output shaft of the driving motor 325 , and the driving gear 324 is engaged with one of the driven gears 3231 .

It can be understood that when the driving motor 325 rotates, it will drive the driving gear 324 to rotate, thereby driving the gear shaft 323 to rotate, and then drive the rack 322 to move horizontally, and finally drive the transition platform 31 to move horizontally, so as to move out or retract the car from the car. Inside.

In addition, the quantity of the guide wheel 15 is two, and the guide wheel 15 is a universal wheel. In addition, the bottom of the cushion 14 is also provided with some universal balls 143. When the guide wheel 15 When rolling on the track 31 , the universal ball 143 is rollingly connected with the top of the transition platform 31 , which reduces the movement resistance of the cushion 14 on the platform and improves the movement stability of the cushion 14 on the other hand. However, it should be pointed out that the number of components used in this embodiment is not unique, and in other embodiments, the number of these components can be appropriately increased or decreased according to actual needs.

Please refer to Figure 10, the following describes the getting on and off assisting device in detail in conjunction with the specific use process:

When getting on the bus, the car door can be opened, then the transition platform 31 is stretched out from the car by means of the drive mechanism 32, and then the wheelchair is moved (the handicapped person can move by himself or an accompanying person helps to move), so that the seat cushion 14 is moved to the top of the transition platform 31, And make the guide wheel 15 align with the arc track 311 on the top of the transition platform 31, then manipulate the adjustment mechanism 16 to make the guide wheel 15 drop into the arc track 311, then separate the upper and lower brackets of the wheelchair to separate the seat cushion 14, and then use the driving The mechanism 32 pulls the transition platform 31 back into the car together with the seat cushion 14, and then the seat cushion 14 can be moved so that the guide wheel 15 rolls in the arc track 311. Due to moving in the arc track 311, the seat cushion 14 will constantly turn. When the seat cushion 14 turns to face the front of the car, the seat 20 is manipulated to move forward, so that the seat cushion 14 and the seat 20 are accommodated and matched, and then the seat cushion 14 is fixed to the seat 20 by using the locking structure to complete the action of getting on the car ;

When getting off the car, first release the locking structure to separate the seat cushion 14 from the seat 20, and push the seat 20 back, then open the car door, and use the driving mechanism 32 to extend the transition platform 31 together with the seat cushion 14 out of the car, Then move the seat cushion 14 to make it move to a suitable position (to be convenient for docking the position of the lower bracket), and then install two first pillars 111 on both sides respectively to connect the entire body to realize the connection of the upper and lower brackets of the wheelchair, and then control the adjustment mechanism 16 , so that the guide wheels 15 are lifted into the accommodating groove 141, and then the wheelchair 10 can be moved, and finally the transition platform 31 is retracted into the vehicle by the driving mechanism 32, and the getting off operation is completed.

It should be pointed out that the relevant components of the auxiliary device for getting on and off the car shown in Figure 10 are installed in the cab, which can facilitate the getting on and off of the car for disabled drivers, but the present invention is not limited thereto. According to the inventive spirit of the present invention, in other embodiments, This auxiliary device for getting on and off can also be arranged on the co-driver or the back row, so as to facilitate the disabled people who take the car to get on and off.

To sum up, the auxiliary device for getting on and off the car in the above embodiments of the present invention can greatly facilitate the getting on and off of the car for the disabled, and the operation of getting on and off the car is simple and the experience is high.

Please refer to FIG. 11 , which shows a schematic structural view of the seat cushion of the getting on and off assist device in the second embodiment of the present invention. The get on and off assist device in this embodiment is roughly the same as the get on and off assist device in the first embodiment. The advantage is that:

The adjustment mechanism 16 further includes a pair of limit components 163 , one limit component 163 is disposed in each of the lifting guide rails 1411 . The limiting component 163 includes an extruding plate 1631 and several springs 1632. The extruding plate 1631 is obliquely arranged in the lifting guide rail 1411, and its front faces the two locking parts A. The springs 1632 Connected between the back of the extrusion plate 1631 and the inner wall of the lifting guide rail 1411, when the support shaft 162 is stuck on any of the locking parts A, the extrusion plate 1631 will cooperate with the locking The stop part A squeezes the support shaft 162 to ensure that the guide wheel 15 is more stable after being raised and lowered. When the support shaft 162 moves to the other stop part A, the squeeze is pushed away from the squeeze plate 1631.

Another aspect of the present invention also proposes a car, including a car body, and also includes the assisting device for getting on and off in the above-mentioned first or second embodiment.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (8)

1. An auxiliary device for getting on and off the vehicle, comprising: A wheelchair comprising a lower bracket, an upper bracket arranged on the lower bracket by a detachable connection structure, a seat cushion arranged on the upper bracket, a guide wheel arranged at the bottom of the seat cushion, and a seat cushion arranged on the seat cushion It is also used to drive the adjustment mechanism for the lifting of the guide wheel; A seat, the bottom of which is provided with a track connected to the front and rear adjustment mechanism of the seat in the vehicle, the seat cushion is compatible with the seat, and a locking structure is provided between the seat and the seat cushion; and A platform mechanism, which includes a transition platform located on the floor of the vehicle and in front of the seat, and a drive mechanism located at the bottom of the transition platform and used to drive the transition platform to move horizontally, and the top of the transition platform is set There is an arc track matched with the guide wheel; The bottom of the seat cushion is provided with a receiving groove, the opposite side walls of the receiving groove are respectively provided with a lifting guide rail, and the lifting guide rail is provided with two locking parts along the longitudinal direction, one of the lifting guide rails runs through the seat , the adjustment mechanism includes: a guide wheel bracket, which is accommodated in the receiving groove, and the guide wheel is arranged at the bottom of the guide wheel bracket; and A support shaft, which is installed on the guide wheel bracket, and erected on the two lifting guide rails, and can slide along the lifting guide rails to engage with any of the locking parts, and the support One end of the shaft passes through the lifting guide rail and extends to the front of the cushion; The adjustment mechanism also includes a pair of limit assemblies, each of the lifting guide rails is provided with a limit assembly, and the limit assemblies include: A pressing plate, which is arranged obliquely in the lifting guide rail, and its front face faces the two locking parts; Several springs, which are connected between the back of the extrusion plate and the inner wall of the lifting guide rail, when the support shaft is stuck on any of the locking parts, the extrusion plate will cooperate with the locking One part presses the support shaft, and when the support shaft moves to another locking part, the press is pushed away from the press plate. 2. The auxiliary device for getting on and off the vehicle according to claim 1, wherein the lower support includes several first pillars, the upper support includes several second pillars, and each of the first pillars passes through one of the first pillars. The detachable connection structure is docked with one of the second pillars. 3. The auxiliary device for getting on and off the vehicle according to claim 2, wherein the detachable connecting structure comprises: A sleeve, which is sleeved on the first pillar and the second pillar, the wall of the sleeve is provided with a passing groove and a locking groove, and the length direction of the passing groove is along the length of the sleeve the axial arrangement of the locking groove, the length direction of the locking groove is perpendicular to the axial direction of the sleeve, and the passing groove communicates with the locking groove; and A locking member, which includes a cylinder and a block, the first pillar is provided with a mounting hole, one end of the cylinder is detachably inserted into the mounting hole, and can be rotated relative to the mounting hole , the block is cross-connected with the other end of the column in the shape of a "ten", and the block is stuck in the locking groove. When the block is rotated to be parallel to the passing groove, The locking member can relatively move in the passing groove. 4. The auxiliary device for getting on and off the vehicle according to claim 3, wherein the detachable connection structure further comprises: A plug sleeve, an annular groove is provided on the outer wall of the cylinder, the plug sleeve is sleeved on the cylinder and embedded in the groove, the plug sleeve is inserted into the installation hole, And it is in close contact with the inner wall of the installation hole. 5. The auxiliary device for getting on and off the vehicle according to claim 1, wherein the driving mechanism comprises: Two guide rods arranged in parallel, the bottom of the transition platform is slid on the guide rods; two racks arranged in parallel, which are fixed on the bottom of the transition platform; A gear shaft, two ends of which are respectively provided with a driven gear, and each said driven gear is meshed with a said rack; a driving gear meshed with one of the driven gears; and A driving motor, the driving gear is sleeved on the output shaft of the driving motor. 6. The auxiliary device for getting on and off according to claim 1, characterized in that, the bottom of the seat cushion is also provided with several universal balls, and when the guide wheel rolls on the track, the universal balls and The top scrolling link of the transition platform. 7. The auxiliary device for getting on and off according to claim 1, wherein the wheelchair further comprises a pedal mechanism, and the pedal mechanism comprises: a pivot shaft, which is rotatably mounted on the front side of the cushion; two connecting rods, which are symmetrically arranged at both ends of the pivot shaft; two footrests, one at the end of each connecting rod; and The rotary motor is arranged on the seat cushion, and the output shaft is connected to the pivot shaft. 8. An automobile, comprising a vehicle body, characterized in that it further comprises the assisting device for getting on and off according to any one of claims 1-7.

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