Wheelchair lift and vehicle having the same

Abstract

The present invention discloses a wheelchair lift and a vehicle having the same, wherein the wheelchair lift comprises: a plurality of fixed seats, a tray and a plurality of groups of folding and unfolding drive mechanisms. The fixed seats are connected in the vehicle body. The tray can move up and down and rotate relative to the fixed seats. Each group of folding and unfolding drive mechanisms comprises a driving member and a multi-link mechanism, one end of the driving member is connected to the fixed seat, the other end of the driving member is connected to the multi-link mechanism, one end of the multi-link mechanism is hinged to the fixed seat, and the other end of the multi-link mechanism is rotatably connected to the tray. When the driving member drives the multi-link mechanism to extend, the tray is unfolded relative to the folding and unfolding drive mechanism, and the tray descends relative to the fixed base assembly; when the driving member drives the multi-link mechanism to close, the tray is folded relative to the folding and unfolding drive mechanism, and the tray rises relative to the fixed base assembly. In the wheelchair lift of the embodiment of the present invention, the tray can rotate and move up and down relative to the fixed seat, which is convenient for storage, space saving, and also convenient for wheelchair passengers to get on and off the vehicle.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles, and in particular relates to a wheelchair lift and a vehicle with the same. Background Art

[0002] With the development of society, cars have gradually entered thousands of households, bringing great convenience to life. At the same time, the elderly, people with limited mobility, and people with disabilities in wheelchairs face various unsafe factors when riding in cars, such as inconvenience in getting on and off the car, and the driver cannot discover emergencies in time, which poses a certain threat to the personal health of passengers. By modifying traditional cars and installing wheelchair hoists, it can greatly facilitate wheelchairs to get on and off the car. Such cars are called welfare cars.

[0003] There are two types of welfare vehicles: "self-driving" and "care-type". "Self-driving" vehicles are vehicles driven by people with limited mobility themselves, including electric wheelchairs, electric tricycles, four-wheel vehicles, and vehicles with assisted driving devices; "care-type" vehicles are mainly used for caring for and transporting people with limited mobility.

[0004] In the related art, the driving device of the wheelchair lift is complex and has a single function. The driving device can only be used to lift the tray alone so that the tray can be raised or lowered relative to the vehicle body. If the tray needs to be folded and stored, other driving devices need to be set up separately, resulting in the wheelchair lift having a complex structure, occupying a large installation space, and being heavy. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a wheelchair lift, the retractable and extended driving mechanism of which can simultaneously realize the lifting and lowering and flipping storage of the tray, and has multiple functions, thus solving the problem that the existing wheelchair lift has multiple driving devices, complex structure and single function.

[0006] The present invention also aims to provide a vehicle having the above-mentioned wheelchair lift.

[0007] A wheelchair lift according to an embodiment of the present invention comprises: a fixed base assembly, comprising a plurality of fixed seats, wherein the fixed seats are suitable for being connected to a vehicle body; a tray, wherein the tray can be lifted and lowered and rotated relative to the fixed base assembly; a plurality of groups of folding and unfolding drive mechanisms, wherein each group of the folding and unfolding drive mechanisms comprises a driving member and a multi-link mechanism, wherein one end of the driving member is connected to the fixed seat, and the other end of the driving member is connected to the multi-link mechanism, one end of the multi-link mechanism is hinged to the fixed seat, and the other end of the multi-link mechanism is rotatably connected to the tray; when the driving member drives the multi-link mechanism to extend, the tray is unfolded relative to the folding and unfolding drive mechanism, and the tray descends relative to the fixed base assembly; when the driving member drives the multi-link mechanism to close, the tray is folded relative to the folding and unfolding drive mechanism, and the tray rises relative to the fixed base assembly.

[0008] According to the wheelchair lift of the embodiment of the present invention, the fixed seat is connected to the vehicle body to provide stable support for the movement of the folding and unfolding drive mechanism and the tray. The extension and closing of the multi-link mechanism drives the tray to move, and the folding and unfolding drive mechanism can make the tray rotate and move up and down relative to the fixed base assembly, so that when the wheelchair lift is not in use, the tray and the folding and unfolding drive mechanism can move toward the fixed seat to form a fold, which is convenient for storage and space saving; it can also enable the wheelchair lift to be unfolded and move up and down relative to the fixed seat when it is needed. The tray drives the wheelchair to rise, which can facilitate the relevant person in the wheelchair to be lifted and get on the vehicle; the tray drives the wheelchair to descend, which can facilitate the relevant person in the wheelchair to get off the vehicle.

[0009] According to a wheelchair lifting device according to one embodiment of the present invention, the multi-link mechanism includes a first link, a second link and a third link, the first link and the second link are arranged at intervals, one end of the first link and the second link are hinged at different positions of the fixed seat, the other ends of the first link and the second link are hinged at different positions of the third link, and the tray is rotatably connected to the third link away from the first link and the second link.

[0010] Optionally, the driving member is located between the first connecting rod and the second connecting rod, one end of the driving member is connected to the fixing seat, and an output end of the driving member is connected to the second connecting rod.

[0011] Advantageously, the third connecting rod is an angled connecting rod, comprising a first rod segment and a second rod segment connected at an angle, the first connecting rod and the second connecting rod are both hinged on the first rod segment, and the tray is arranged at one end of the second rod segment away from the first rod segment.

[0012] According to a further embodiment of the present invention, the wheelchair lift also includes a folding auxiliary component, which includes a fourth link and a fifth link that are rotatably connected, one end of the fourth link is rotatably connected to the third link and the tray, one end of the fifth link is rotatably connected to the middle part of the third link, and one end of the fifth link close to the fourth link is connected to a first pressure wheel; when the multi-link mechanism switches from extension to convergence, the first pressure wheel contacts and squeezes the second link.

[0013] Optionally, a rolling groove is provided on a side of the second connecting rod facing the first pressure wheel, and the first pressure wheel rolls in the rolling groove after contacting the second connecting rod.

[0014] Optionally, the folding auxiliary component also includes a fixed plate, one end of the fixed plate is rotatably connected to the third connecting rod and the tray through a first rotating member, and the other end of the fixed plate is rotatably connected to the fourth connecting rod and the tray through a second rotating member, and the rotation axes of the first rotating member and the second rotating member are parallel.

[0015] Optionally, it also includes a flippable front flap, and the folding auxiliary component also includes a second pressure wheel, a reset member, a first movable member and a second movable member, one end of the first movable member is connected to the second pressure wheel, the other end of the first movable member is slidably connected to the second movable member, the second movable member is connected to the front flap, one end of the reset member is connected to the fourth connecting rod, and the other end of the reset member is connected to the first movable member; when the multi-link mechanism switches from extension to closing, the second pressure wheel contacts the second connecting rod before the first pressure wheel, the second connecting rod squeezes the second pressure wheel, the second pressure wheel drives the first movable member to move relative to the second movable member, the reset member accumulates force, and the second movable member drives the front flap to flip to horizontal; when the second pressure wheel is disengaged from the second connecting rod, the reset member drives the first movable member to reset, and the second movable member drives the front flap to flip to vertical.

[0016] Optionally, the wheelchair lift also includes a flippable transition guide rail, one end of which is rotatably connected to the fixed seat, and the other end of the transition guide rail can extend to the front flap, and the front flap is provided with a first avoidance hole to avoid the transition guide rail, and when the transition guide rail is flipped toward the tray, the transition guide rail overcomes the force of the reset member to flip the front flap from vertical to horizontal.

[0017] Optionally, a tray guide rail is provided on the tray, and when the tray switches between unfolding and folding, the transition guide rail can overlap with the tray guide rail and slide along the tray guide rail.

[0018] Optionally, the wheelchair lift further comprises an armrest, one end of the armrest is connected to the fifth connecting rod, the third connecting rod is provided with a second avoidance hole penetrating in the thickness direction, and the other end of the armrest passes through the second avoidance hole and extends above the tray.

[0019] According to the wheelchair lifting device of one embodiment of the present invention, the fixed base assembly further includes a connecting plate, two ends of the connecting plate are respectively connected to the two fixed bases, and a passage opening is formed between the two fixed bases.

[0020] According to the wheelchair lifting device of one embodiment of the present invention, the driving component is one of a hydraulic cylinder, an electric push rod and a pneumatic cylinder.

[0021] A vehicle according to an embodiment of the present invention comprises: a vehicle body having an entrance and exit; a wheelchair lift, the wheelchair lift being the aforementioned wheelchair lift, the fixing seat being connected to the vehicle body, the tray being extendable from the entrance and exit, the tray being liftable relative to the vehicle body and the tray being rotatable relative to the vehicle body.

[0022] The vehicle according to the embodiment of the present invention is equipped with a wheelchair lift, which is convenient for folding and lifting the wheelchair, making it convenient for people in wheelchairs to get in and out of the vehicle, thereby improving the practicality of the vehicle.

[0023] Additional aspects and advantages of the invention will become apparent from the following description, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a wheelchair lift according to an embodiment of the present invention when it is unfolded and lowered to a position close to the ground.

[0026] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the wheelchair lift from another angle.

[0027] Figure 3 for Figure 1 Side view of a wheelchair lift.

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of a wheelchair lift according to an embodiment of the present invention when it is unfolded and lowered to be flush with the vehicle floor.

[0029] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the wheelchair lift from another angle.

[0030] Figure 6 for Figure 4 Side view of a wheelchair lift.

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of a wheelchair lift according to an embodiment of the present invention when it is folded and raised to be perpendicular to the vehicle floor.

[0032] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure of the wheelchair lift from another angle.

[0033] Fig. 9 for Figure 7 Side view of a wheelchair lift.

[0034] Fig.10 This is a structural schematic diagram of a wheelchair lifter in a vehicle that lifts a wheelchair into the vehicle body according to an embodiment of the present invention.

[0035] Fig.11 It is a structural schematic diagram of a wheelchair lift in a vehicle in accordance with an embodiment of the present invention, in which a wheelchair lift is deployed and lowered to the ground in preparation for lifting a wheelchair.

[0036] Fig.12 The present invention is a structural schematic diagram of a wheelchair lifter in a vehicle that lifts a wheelchair to be flush with the vehicle floor in accordance with an embodiment of the present invention.

[0037] Fig.13 The present invention is a structural schematic diagram of a wheelchair lift in a vehicle in accordance with an embodiment of the present invention, in which the wheelchair lift is folded and raised to be perpendicular to the vehicle floor.

[0038] Fig.14 This is a schematic diagram of a tension spring provided on a fixing seat according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1000. Wheelchair hoist;

[0041] 100, fixed base assembly; 110, fixed base; 120, connecting plate;

[0042] 200, tray; 210, tray guide rail; 220, tray guide block;

[0043] 300, retracting and extending driving mechanism;

[0044] 310, driving member;

[0045] 320. Multi-link mechanism;

[0046] 321, first connecting rod; 322, second connecting rod; 3221, rolling groove;

[0047] 323, third connecting rod; 3231, first rod section; 3232, second rod section; 3233, second avoidance hole;

[0048] 400, folding auxiliary component;

[0049] 410, fourth connecting rod; 420, fifth connecting rod; 421, first pressing wheel; 422, handrail;

[0050] 430, fixed plate; 440, first rotating member; 450, second rotating member;

[0051] 461, second pressing wheel; 462, first moving member; 463, second moving member;

[0052] 464, reset member; 465, guide member;

[0053] 500, front flap; 510, first avoidance hole;

[0054] 600, transition guide rail; 610, guide rail swing arm; 620, tension spring; 630, stop member;

[0055] 700, rear flap;

[0056] 2000, vehicle; 2001, vehicle body; 2002, entrance and exit; 2003, vehicle floor; 2004, seat;

[0057] 3000. Wheelchair. DETAILED DESCRIPTION

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0059] In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] The wheelchair lift 1000 of an embodiment of the present invention is described below with reference to the drawings in the specification. The wheelchair lift 1000 of the present invention can be installed in a vehicle 2000 and lift a wheelchair 3000 to facilitate people riding in the wheelchair 3000 to get on and off the vehicle 2000.

[0061] A wheelchair lift 1000 according to an embodiment of the present invention, as Figure 1 As shown, it includes: a fixed base assembly 100, a tray 200 and a plurality of groups of folding and unfolding driving mechanisms 300.

[0062] Among them, Figure 1 As shown, the fixed base assembly 100 includes a plurality of fixed seats 110, which are suitable for connecting to Fig.10 The vehicle body 2001 shown provides support force for the posture change of the entire wheelchair lift 1000.

[0063] like Figure 1 , Figure 4 , Figure 7 As shown, the tray 200 can be raised and lowered and rotated relative to the fixed base assembly 100, that is, the tray 200 can be raised and lowered relative to the fixed base assembly 100, and can also rotate relative to the fixed base assembly 100. At the same time, the tray 200 can be raised and lowered relative to the vehicle floor 2003, and can also rotate relative to the vehicle floor 2003.

[0064] like Figure 1 As shown, each group of the folding and unfolding driving mechanism 300 includes a driving member 310 and a multi-link mechanism 320. One end of the driving member 310 is connected to the fixed seat 110, and the other end of the driving member 310 is connected to the multi-link mechanism 320. One end of the multi-link mechanism 320 is hinged to the fixed seat 110, and the other end of the multi-link mechanism 320 is rotatably connected to the tray 200. When the driving member 310 drives the multi-link mechanism 320 to extend, the tray 200 is unfolded relative to the folding and unfolding driving mechanism 300, and the tray 200 is lowered relative to the fixed base assembly 100. When the driving member 310 drives the multi-link mechanism 320 to close, the tray 200 is folded relative to the folding and unfolding driving mechanism 300, and the tray 200 is raised relative to the fixed base assembly 100.

[0065] As can be seen from the above structure, in the wheelchair lift 1000 of the embodiment of the present invention, the fixing seat 110 is connected in the vehicle body 2001 to provide stable support for the movement of the retractable and extended driving mechanism 300 and the tray 200, and can effectively prevent the retractable and extended driving mechanism 300 from shaking or tilting.

[0066] The extension and convergence of the multi-link mechanism 320 drives the tray 200 to move, and the movement of the folding and extending driving mechanism 300 can cause the tray 200 to rotate and move up and down relative to the fixed base assembly 100, so that when the wheelchair lift 1000 is not in use, the tray 200 and the folding and extending driving mechanism 300 can be folded toward the fixed seat 110, which is convenient for storage and saves space.

[0067] When the wheelchair lift 1000 is needed, the tray 200 can be unfolded and moved up and down relative to the fixing seat 110. When the tray 200 is lowered to be flush with the ground, the wheelchair 3000 can be mounted on the tray 200 and lifted together with the tray 200.

[0068] When the driving member 310 drives the multi-link mechanism 320 to move toward one side of each other, the tray 200 and the wheelchair 3000 are lifted upward until the tray 200 is flush with the vehicle floor 2003, and the wheelchair 3000 can move along the tray 200 and enter the vehicle body 2001, so that the relevant person in the wheelchair 3000 who needs to get on the vehicle can complete the boarding smoothly.

[0069] When it is necessary to get off the vehicle, the driving member 310 drives the multi-link mechanism 320 to extend in the opposite manner to the above steps, so that the tray 200 is unfolded and lowered to the level of the vehicle floor 2003 , and the person riding in the wheelchair 3000 drives the wheelchair 3000 back onto the tray 200 .

[0070] Subsequently, the driving member 310 continues to drive the multi-link mechanism 320 to further extend, so that the tray 200 further descends to be flush with the ground, and the person riding in the wheelchair 3000 drives the wheelchair 3000 out of the tray 200 and gets off smoothly.

[0071] It can be understood that compared with the prior art hoist in which multiple driving devices are provided to drive the lifting and folding of the tray respectively, the folding and unfolding driving mechanism 300 of the wheelchair hoist 1000 of the present application is multi-functional, which can not only drive the lifting and lowering movement of the tray 200, but also drive the rotation of the tray 200, so that the tray 200 can drive the wheelchair 3000 to get on and off the vehicle, making it convenient for people riding in the wheelchair 3000 to travel.

[0072] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0073] In some embodiments of the present invention, Figure 1As shown, the multi-link mechanism 320 includes a first link 321, a second link 322 and a third link 323, the first link 321 and the second link 322 are arranged at intervals, one end of the first link 321 and the second link 322 are hinged at different positions of the fixing seat 110, the other ends of the first link 321 and the second link 322 are hinged at different positions of the third link 323, and the tray 200 is rotatably connected to the third link 323 away from the first link 321 and the second link 322. In these examples, a certain distance is formed between the first link 321 and the second link 322 in the multi-link mechanism 320, so that the driving member 310 is conveniently arranged between the two. The hinge lines between the first link 321, the second link 322, the fixed seat 110 and the third link 323 form a first quadrilateral mechanism, and the distance between the hinge points located on the diagonal line of the four hinge points can change to a certain extent, so that the third link 323 can move closer to the first link 321 and the second link 322, especially the end of the third link 323 with the tray 200 can swing and fold more. Since the tray 200 has a certain weight, when the tray 200 is unfolded relative to the third link 323, the tray 200 will further rotate to the horizontal due to its own weight. At this time, the tray 200 is limited so that the tray 200 maintains the unfolding angle, which is convenient for the tray 200 to carry the wheelchair 3000.

[0074] Alternatively, if Figure 1 , Figure 3 and Figure 6 As shown, the driving member 310 is located between the first link 321 and the second link 322, one end of the driving member 310 is connected to the fixed seat 110, and the output end of the driving member 310 is connected to the second link 322. When the second link 322 is subjected to a lifting force or a downward pulling force, the first four-bar mechanism formed by the second link 322, the third link 323, the first link 321, and the fixed seat 110 will be deformed by the force, so that the second link 322 and the third link 323 move closer to or stretch toward the first link 321, further driving the tray 200 to be unfolded or folded.

[0075] Advantageously, the first connecting rod 321 is located above the second connecting rod 322. At this time, the driving member 310 is arranged on the second connecting rod 322 and can transmit more force to the third connecting rod 323 while driving the second connecting rod 322, making it easier for the driving member 310 to lift the third connecting rod 323 upward.

[0076] Advantageously, if Figure 3As shown, the third link 323 is a link with an angle, and the third link 323 includes a first rod segment 3231 and a second rod segment 3232 connected at an angle, the first link 321 and the second link 322 are both hinged on the first rod segment 3231, and the tray 200 is arranged at one end of the second rod segment 3232 away from the first rod segment 3231. At this time, the first rod segment 3231, the first link 321, the second link 322, and the fixing seat 110 form a deformable first four-link mechanism, and the second rod segment 3232 is further extended to form more arrangement space to connect the tray 200. After unfolding, the second rod segment 3232 is closer to the vertical direction, that is, the angle between the second rod segment 3232 and the vertical line is smaller than the angle between the first rod segment 3231 and the vertical line, and the tray 200 arranged on the second rod segment 3232 is easier to adjust to the horizontal, so that the arrangement of the folding and unfolding driving mechanism 300 is more flexible.

[0077] Optionally, the driving member 310 is one of a hydraulic cylinder, an electric push rod, and a pneumatic cylinder. These driving members 310 can change the overall shape and position of the first four-bar linkage during the extension and retraction process, so that the entire retraction and extension driving mechanism 300 has a simple structure, diverse changes, and occupies less space, and can apply a rotational force and a lifting force to the tray 200.

[0078] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the wheelchair lift 1000 further includes a folding auxiliary assembly 400, which includes a fourth link 410 and a fifth link 420 that are rotatably connected, one end of the fourth link 410 is rotatably connected to the third link 323 and the tray 200, and one end of the fifth link 420 is rotatably connected to the middle of the third link 323, where the third link 323 mainly refers to the second rod segment 3232 of the third link 323 in the aforementioned examples. In these examples, another multi-link is formed between the third link 323, the fourth link 410 and the fifth link 420, thereby assisting the deformation of the first four-link mechanism.

[0079] The fifth link 420 is connected to the first pressure wheel 421 at one end close to the fourth link 410. When the multi-link mechanism 320 switches from extension to closing, the first pressure wheel 421 contacts and squeezes the second link 322. At this time, the first pressure wheel 421 applies a certain squeezing force from the lower part of the second link 322 to assist the driving member 310 to more easily drive the second link 322 to lift upward, thereby making it easier for the third link 323, the first link 321, and the second link 322 to be closer and stored. At the same time, the tray 200 will also be driven to fold.

[0080] In the description of the present invention, features limited to "first", "second", "third", "fourth" and "fifth" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe the features, without any order or importance.

[0081] Alternatively, if Figure 4 As shown, a rolling groove 3221 is provided on the side of the second connecting rod 322 facing the first pressure wheel 421. After the first pressure wheel 421 contacts the second connecting rod 322, it rolls in the rolling groove 3221. As the driving member 310 lifts the second connecting rod 322, the position of the second connecting rod 322 changes continuously, and the position of the second connecting rod 322 contactable by the first pressure wheel 421 also changes continuously. The provision of the rolling groove 3221 not only enables the first pressure wheel 421 to form a stable fit with the second connecting rod 322, but also ensures that the first pressure wheel 421 does not cause any obstruction to the second connecting rod 322 during the lifting process, thereby facilitating the driving member 310 to apply a driving force.

[0082] Alternatively, if Figure 3 and Figure 6 As shown, the folding auxiliary assembly 400 also includes a fixed plate 430, one end of which is rotatably connected to the third link 323 and the tray 200 through a first rotating member 440, and the other end of the fixed plate 430 is rotatably connected to the fourth link 410 and the tray 200 through a second rotating member 450, and the rotation axes of the first rotating member 440 and the second rotating member 450 are parallel. In these examples, the connecting lines of the rotation points between the fixed plate 430, the fourth link 410, the fifth link 420, and the third link 323 constitute a second four-bar linkage. When the first pressing wheel 421 is squeezed by the second link 322, the distance between the rotation point between the fifth link 420 and the fourth link 410 changes relative to the rotation point between the fixed plate 430 and the third link 323, so that the fourth link 410 and the fifth link 420 move closer to the second link 322 along with the third link 323, so that the overall folding and unfolding drive mechanism 300 is more compact and occupies less space after folding. During the rotation of the fixing plate 430 and the third connecting rod 323 , the tray 200 is also driven to flip over, so that the position and shape of the tray 200 are changed.

[0083] Of course, a pallet limiting screw can also be set on the fixed plate 430. When the pallet 200 is lifted to be flush with the vehicle floor 2003, the rotation point between the fixed plate 430 and the third connecting rod 323 forms a stop point, and the force arm generated by the pallet limiting screw contacting the third connecting rod 323 is balanced with the self-gravity arm of the pallet 200, thereby maintaining the pallet 200 in a horizontal state.

[0084] Alternatively, if Figure 2 , Figure 5 and Figure 7As shown, the wheelchair lift 1000 further includes a reversible front flap 500. Figure 2 As shown, the folding auxiliary component 400 also includes a second pressure wheel 461, a reset member 464, a first movable member 462 and a second movable member 463, one end of the first movable member 462 is connected to the second pressure wheel 461, the other end of the first movable member 462 is slidably connected to the second movable member 463, the second movable member 463 is connected to the front flap 500, one end of the reset member 464 is connected to the fourth connecting rod 410, and the other end of the reset member 464 is connected to the first movable member 462.

[0085] When the multi-link mechanism 320 switches from extension to close to the limit state, the second pressure wheel 461 contacts the second connecting rod 322 before the first pressure wheel 421, which mainly refers to the second pressure wheel 461 contacting the side of the bottom wall of the second connecting rod 322, and the second connecting rod 322 squeezes the second pressure wheel 461. The second pressure wheel 461 drives the first moving member 462 to move to a lower position relative to the second moving member 463 until it moves to the lowest limit position, pushing the second moving member 463 to move and drive the front flap 500 to tilt toward the fixed seat 110 and contact the fixed seat 110. In the above process, the reset member 464 realizes force storage. In some designs, in the above process, the second moving member 463 drives the front flap 500 to flip to the horizontal.

[0086] When the multi-link mechanism 320 switches from the closed state to the extended state, and the second pressure wheel 461 disengages from the second link 322, the reset member 464 begins to release force and drives the first movable member 462 to reset. After the first movable member 462 moves up to the highest limit position relative to the second movable member 463, the second movable member 463 is driven to lift by the first movable member 462, so that the second movable member 463 drives the front flap 500 to flip to vertical.

[0087] Optionally, the reset member 464 is a pneumatic spring, such as a nitrogen spring. The nitrogen spring has a small size, a large elastic force, a long stroke, a stable operation, is precisely manufactured, and has a long service life and is durable.

[0088] Optionally, the reset member 464 may also be an ordinary compression spring, which is compressed and stores force after being squeezed, and stretches and releases force after losing the squeezing force.

[0089] Alternatively, if Figure 2As shown, the folding auxiliary assembly 400 also includes a guide member 465, which is connected on the 4th connecting rod 410. The first mobile member 462 is sleeved in the guide member 465, so that the moving track of the first mobile member 462 is fixed, and the first mobile member 462 can not shake during the movement. In some specific examples, the guide member 465 can select a slide block with a slideway, and the first mobile member 462 is slidably located in the slideway. In some other specific examples, the guide member 465 can select a guide cylinder, and the first mobile member 462 is sleeved in the guide cylinder to realize forward and backward sliding.

[0090] Optionally, a slide groove is provided at one end of the second moving member 463 close to the first moving member 462, and the first moving member 462 is limitedly connected in the slide groove by a limiting member, and the limiting member makes the first moving member 462 always fit in the slide groove and will not be disengaged. In a specific example, the limiting member can be a locking bolt, and the locking bolt is clamped in the slide groove. The first moving member 462 can drive the locking bolt to slide in the slide groove and move to the limit position of the slide groove, that is, when the locking bolt is clamped in the upper limit position of the slide groove, the first moving member 462 continues to move upward to drive the second moving member 463 to lift upward; when the locking bolt is clamped in the lower limit position of the slide groove, the first moving member 462 continues to move downward to drive the second moving member 463 to move so that the front flap 500 completes the flip.

[0091] In a further example of the present invention, Figure 3 , Figure 5 and Figure 7 As shown, the wheelchair lift 1000 also includes a flippable transition rail 600, one end of which is rotatably connected to the fixed seat 110, and the other end of the transition rail 600 can extend to the front flap 500. The front flap 500 is provided with a first avoidance hole 510 to avoid the transition rail 600. When the transition rail 600 is flipped toward the tray 200, the transition rail 600 overcomes the force of the reset member 464 to flip the front flap 500 from vertical to horizontal. In these examples, when the second pressure wheel 461 is not squeezed by the second connecting rod 322, if the transition rail 600 is flipped onto the front flap 500, the second movable member 463, the first movable member 462 and the reset member 464 connected to the front flap 500 can be subjected to force in turn, thereby overcoming the elastic supporting force of the reset member 464 and making the front flap 500 horizontal relative to the vehicle floor 2003. For details, please refer to Figure 4 , Figure 5 and Figure 6 Since the front flap 500 slowly turns to a horizontal position, the noise when the transition guide rail 600 lands on the vehicle floor 2003 can be effectively reduced, and the front flap 500 can slowly return to its original position after losing the extrusion of the transition guide rail 600.

[0092] Optionally, the transition guide rail 600 is rotatably connected to the fixed seat 110 through a guide rail swing arm 610, and a tension spring 620 is arranged between the fixed seat 110 and the guide rail swing arm 610, so that the transition guide rail 600 continues to have a tendency to press downward, thereby enhancing the fitting strength of the transition guide rail 600 on components such as the front flap 500, so that the transition guide rail 600 is continuously pressed on the vehicle floor 2003. When the wheelchair 3000 passes near the transition guide rail 600, it can effectively prevent the front flap 500 and other components from jumping up and affecting stability.

[0093] Advantageously, if Fig.14 As shown, a stopper 630 is further provided on the fixing seat 110, and one end of the stopper 630 stops at one side of the guide rail swing arm 610. When the guide rail swing arm 610 swings to a specific angle, the stopper 630 stops the guide rail swing arm 610, so that the transition guide rail 600 can be folded along with the tray 200, and the transition guide rail 600 will not tip forward and cause danger. When the vehicle 2000 brakes, the transition guide rail 600 will not tip over.

[0094] Optionally, the stop member 630 is a limiting bolt member, so that the depth of the stop member 630 extending into the fixing seat 110 and the working surface cooperating with the guide rail swing arm 610 can be adjusted.

[0095] Advantageously, if Fig.14 As shown, one side of the guide rail swing arm 610 protrudes to form a connecting end, and a plurality of tension springs 620 are provided between the connecting end and the bottom of the fixing seat 110. When the transition guide rail 600 is squeezed by the tray 200, the connecting end can abut against the stop member 630 during the upward rotation of the guide rail swing arm 610 to form a stop for the rotation of the guide rail swing arm 610.

[0096] Optionally, by installing double oil-free bushings or ordinary bushings on the fixed seat 110, the guide rail swing arm 610 passes through the two bushings and is locked between the two oil-free bushings by means of lock nuts and gaskets. The transition guide rail 600 can be fixed to one end of the guide rail swing arm 610 by clamping the guide rail swing arm 610.

[0097] Alternatively, if Figure 2 , Figure 5 and Figure 7 As shown, the tray 200 is provided with a tray rail 210. When the tray 200 switches between unfolding and folding, the tray 200 is folded to a specific position, and the transition rail 600 can overlap with the tray rail 210 and slide along the tray rail 210, so that the wheelchair 3000 does not get stuck during the in and out process. Thus, the tray 200 can be folded more stably relative to the fixing seat 110, and the folding track is unique. After the tray 200 is folded, it can finally drive the transition rail 600 to complete the folding together.

[0098] Advantageously, a limiting groove is provided on the tray guide rail 210 , and a limiting boss is provided on the transition guide rail 600 . The limiting boss slides forward and backward along the limiting groove to achieve a smooth fit between the transition guide rail 600 and the tray 200 .

[0099] Advantageously, a first slope guide surface is provided on the side of the transition guide rail 600 facing the pallet guide rail 210, and a second slope guide surface is provided on the side of the pallet guide rail 210 facing the transition guide rail 600. When the transition guide rail 600 and the pallet guide rail 210 overlap, the first slope guide surface and the second slope guide surface can form a stable overlap, thereby stabilizing the structure and allowing the transition guide rail 600 to be stably pressed against components such as the front flap 500; and the transition guide rail 600 can be smoothly guided into the limiting groove of the pallet guide rail 210, and the transition guide rail 600 is not easy to separate from the pallet guide rail 210.

[0100] Alternatively, if Figure 2 , Figure 4 and Figure 7 As shown, a flip-up rear flap 700 is provided on the side of the tray 200 away from the front flap 500. When the wheelchair 3000 enters the tray 200, the rear flap 700 can be pressed to a horizontal position with the assistance of a human hand. When the wheelchair 3000 is placed on the tray 200, the rear flap 700 can be automatically flipped up.

[0101] Advantageously, if Figure 2 , Figure 4 and Figure 7 As shown, two tray guide blocks 220 are provided on one side of the tray 200 close to the rear flap 700, and the tray guide blocks 220 cooperate with the tray guide rails 210 in pairs, thereby forming a guide channel between the tray guide blocks 220 and the tray guide rails 210, which facilitates the two wheels of the wheelchair 3000 to drive in or out of the tray 200, and also facilitates the correction of the posture of the wheelchair 3000.

[0102] Optionally, the tray guide block 220 forms an arc-shaped guide surface on one side facing the tray guide rail 210, so that the distance between the tray guide block 220 and the tray guide rail 210 gradually decreases and then gradually increases, which is convenient for the wheelchair 3000 to adjust its posture and enter the guide channel, and also convenient for the wheelchair 3000 to drive out of the guide channel, so that the wheelchair 3000 can correct its posture within a certain angle and smoothly enter and exit the tray 200.

[0103] Alternatively, if Figure 3 , Figure 6 , Figure 8 and Fig. 9As shown, the wheelchair lift 1000 further includes an armrest 422, one end of which is connected to the fifth connecting rod 420, and the third connecting rod 323 is provided with a second avoidance hole 3233 penetrating in the thickness direction, and the other end of the armrest 422 passes through the second avoidance hole 3233 and extends above the tray 200. The armrest 422 can be folded or unfolded following the flipping movement of the fifth connecting rod 420. When the wheelchair 3000 drives onto the tray 200, the person riding the wheelchair 3000 can grasp the armrest 422 to ensure that the wheelchair 3000 does not shake, and the wheelchair 3000 and the person riding the wheelchair can be safely lifted and lowered.

[0104] Advantageously, the end of the armrest 422 away from the fifth connecting rod 420 forms a hook-shaped structure, and the hook-shaped structure can also be limited on the folded tray 200, so that the folded wheelchair lift 1000 is more stable.

[0105] Alternatively, if Figure 1 , Figure 5 and Figure 7 As shown, the fixed base assembly 100 further includes a connecting plate 120, and the two ends of the connecting plate 120 are respectively connected to the two fixing seats 110, and a passage is formed between the two fixing seats 110. The connecting plate 120 connects the two fixing seats 110 together, so that the two fixing seats 110 are located on the same mounting surface, and the distance between the two fixing seats 110 remains unchanged, so that the width of the passage remains unchanged, ensuring that the person riding in the wheelchair 3000 can smoothly drive into the safe position in the vehicle from the passage.

[0106] A vehicle 2000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0107] A vehicle 2000 according to an embodiment of the present invention, such as Fig. 9 As shown, it includes: a vehicle body 2001 and a wheelchair lift 1000. The vehicle body 2001 has an entrance 2002.

[0108] The wheelchair lift 1000 is the wheelchair lift 1000 in the above example, and the structure of the wheelchair lift 1000 is not described in detail. The fixing seat 110 is connected to the vehicle body 2001, and the tray 200 can extend from the entrance 2002. The tray 200 can be raised and lowered relative to the vehicle body 2001 and the tray 200 can rotate relative to the vehicle body 2001.

[0109] It can be seen from the above structure that the vehicle 2000 of the embodiment of the present invention is equipped with a wheelchair lift 1000. The wheelchair lift 1000 is convenient for folding and lifting the wheelchair 3000, which can facilitate people riding in the wheelchair 3000 to enter and exit the vehicle body 2001, thereby improving the practicality of the vehicle 2000, serving travelers who are unable to move and need to ride in the wheelchair 3000, and providing friendly services for the disabled, the elderly, and the injured and sick.

[0110] In a specific example, the fixing seat 110 is fixed on the vehicle floor 2003, and the vehicle body 2001 includes multiple rows of seats 2004, and passages are formed between the multiple rows of seats 2004 to facilitate the wheelchair 3000 to smoothly enter and exit the passage and transfer to a safe position.

[0111] In the above specific example, when the vehicle 2000 is in use, Fig.11 As shown, the person riding in the wheelchair 3000 is located outside the vehicle body 2001. First, the tray 200 of the wheelchair lift 1000 is extended outward from the entrance 22002 and lowered to the ground. At this time, the wheelchair 3000 drives onto the tray 200, and the person can hold the handrail 422 to ensure safety.

[0112] like Fig.12 As shown, when the control tray 200 rises to be flush with the vehicle floor 2003, the transition guide rail 600 overlaps with the tray guide rail 210, and the transition guide rail 600 presses the front flap 500 to a horizontal level. At this time, the wheelchair 3000 can be driven from the tray 200 into the vehicle body 2001, and the assistant can use anchor buckles and other limiting parts to fix the wheelchair 3000 on the vehicle floor 2003 and help the relevant personnel fasten their seat belts.

[0113] like Fig.13 As shown, when the wheelchair lift 1000 is continuously controlled to fold, the tray 200 moves toward the fixed seat 110, and drives the transition guide rail 600 to flip and fold together, and then the tray 200 is limited and fixed to be stably folded, and the door of the vehicle 2000 is closed, and the vehicle 2000 can travel safely. Of course, when the wheelchair lift 1000 is not in use, it can also be kept as shown in the figure. Fig.13 Shown in folded state.

[0114] If you need to get the person in wheelchair 3000 off the vehicle, the reverse operation can be performed.

[0115] The specific structures of the wheelchair lift 1000 and the vehicle 2000 in the specific embodiments of the present invention are described below in conjunction with the drawings. The embodiments of the present invention can be all embodiments after combining the above-mentioned multiple technical solutions, but are not limited to the following specific embodiments, which all fall within the protection scope of the present invention.

[0116] Example 1

[0117] A wheelchair lift 1000, comprising: Figure 1 As shown, it includes: a fixed base assembly 100, a tray 200 and a plurality of groups of folding and unfolding driving mechanisms 300.

[0118] Among them, Figure 1As shown, the fixed base assembly 100 includes a plurality of fixed seats 110, which are suitable for connecting to Fig.10 The vehicle body 2001 is shown. Figure 1 , Figure 4 , Figure 7 As shown, the tray 200 can be lifted and lowered and rotated relative to the fixed base assembly 100. Figure 1 As shown, each group of the folding and unfolding driving mechanism 300 includes a driving member 310 and a multi-link mechanism 320. One end of the driving member 310 is connected to the fixed seat 110, and the other end of the driving member 310 is connected to the multi-link mechanism 320. One end of the multi-link mechanism 320 is hinged to the fixed seat 110, and the other end of the multi-link mechanism 320 is rotatably connected to the tray 200. When the driving member 310 drives the multi-link mechanism 320 to extend, the tray 200 is unfolded relative to the folding and unfolding driving mechanism 300, and the tray 200 is lowered relative to the fixed base assembly 100. When the driving member 310 drives the multi-link mechanism 320 to close, the tray 200 is folded relative to the folding and unfolding driving mechanism 300, and the tray 200 is raised relative to the fixed base assembly 100. The driving member 310 adopts a hydraulic cylinder.

[0119] Example 2

[0120] A wheelchair lift 1000, based on Example 1, a multi-link mechanism 320 includes a first link 321, a second link 322 and a third link 323, the first link 321 and the second link 322 are arranged at intervals, one end of the first link 321 and the second link 322 are hinged at different positions of a fixed seat 110, the other ends of the first link 321 and the second link 322 are hinged at different positions of the third link 323, and the tray 200 is rotatably connected to the third link 323 away from the first link 321 and the second link 322.

[0121] The third connecting rod 323 is an angled connecting rod, and includes a first rod segment 3231 and a second rod segment 3232 connected at an angle. The first connecting rod 321 and the second connecting rod 322 are both hinged on the first rod segment 3231, and the tray 200 is disposed at one end of the second rod segment 3232 away from the first rod segment 3231.

[0122] Example 3

[0123] A wheelchair lift 1000 , based on the second embodiment, further comprises a folding auxiliary component 400 , a front flap 500 and a transition guide rail 600 .

[0124] like Figure 2 and Figure 4As shown, the wheelchair lift 1000 also includes a folding auxiliary component 400, which includes a fourth connecting rod 410 and a fifth connecting rod 420 that are rotatably connected, a first pressure wheel 421, a fixed plate 430, a second pressure wheel 461, a reset member 464, a first movable member 462 and a second movable member 463.

[0125] One end of the fixed plate 430 is rotatably connected to the third connecting rod 323 and the tray 200 through the first rotating member 440, and the other end of the fixed plate 430 is rotatably connected to the fourth connecting rod 410 and the tray 200 through the second rotating member 450. The rotation axes of the first rotating member 440 and the second rotating member 450 are parallel.

[0126] like Figure 4 As shown, the second link 322 is provided with a rolling groove 3221 on the side facing the first pressure wheel 421, and the end of the fifth link 420 close to the fourth link 410 is connected to the first pressure wheel 421. When the multi-link mechanism 320 switches from extension to closing, the first pressure wheel 421 rolls in contact with the rolling groove 3221 of the second link 322 and squeezes the second link 322, making it easier for the third link 323, the first link 321, and the second link 322 to be closed and stored.

[0127] One end of the first moving member 462 is connected to the second pressing wheel 461, and the other end of the first moving member 462 is slidably connected to the second moving member 463, and the second moving member 463 is connected to the front flap 500. One end of the reset member 464 is connected to the fourth connecting rod 410, and the other end of the reset member 464 is connected to the first moving member 462. When the multi-link mechanism 320 switches from the extension to the limit state, the second pressing wheel 461 contacts the second connecting rod 322 before the first pressing wheel 421, which mainly refers to the contact between the second pressing wheel 461 and the bottom wall side of the second connecting rod 322, and the second connecting rod 322 squeezes the second pressing wheel 461, and the second pressing wheel 461 drives the first moving member 462 to move to a lower position relative to the second moving member 463 until it moves to the lowest limit position, pushing the second moving member 463 to move and drive the front flap 500 to tilt toward the direction of the fixed seat 110 and contact the fixed seat 110.

[0128] When the multi-link mechanism 320 switches from the closed state to the extended state, and the second pressure wheel 461 disengages from the second link 322, the reset member 464 begins to release force and drives the first movable member 462 to reset. After the first movable member 462 moves up to the highest limit position relative to the second movable member 463, the second movable member 463 is driven to lift by the first movable member 462, so that the second movable member 463 drives the front flap 500 to flip to vertical.

[0129] like Figure 3 , Figure 5 and Figure 7As shown, the other end of the transition guide rail 600 can extend to the front flap 500. The front flap 500 is provided with a first avoidance hole 510 to avoid the transition guide rail 600. When the transition guide rail 600 flips toward the tray 200, the transition guide rail 600 overcomes the force of the reset member 464 to flip the front flap 500 from vertical to horizontal.

[0130] Example 4

[0131] A vehicle 2000, such as Fig. 9 As shown, the wheelchair lift 1000 includes a vehicle body 2001 and a wheelchair lift 1000. The vehicle body 2001 has an entrance 2002. The wheelchair lift 1000 is the wheelchair lift 1000 in the aforementioned embodiment 3, the fixing seat 110 is connected to the vehicle body 2001, the tray 200 can extend from the entrance 2002, the tray 200 can be raised and lowered relative to the vehicle body 2001, and the tray 200 can rotate relative to the vehicle body 2001.

[0132] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0133] The operation process of the wheelchair lift 1000 and the vehicle 2000 equipped with the wheelchair lift 1000 according to the embodiment of the present invention, the operation process of the wheelchair 3000 entering and exiting, and the fixing process of the wheelchair 3000 are all known to those skilled in the art and will not be described in detail here.

[0134] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0135] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wheelchair lift, characterized in that: include: A fixed base assembly, comprising a plurality of fixed seats, wherein the fixed seats are suitable for being connected to the vehicle body; A tray, the tray being capable of lifting and rotating relative to the fixed base assembly; Multiple groups of folding and unfolding drive mechanisms, each group of the folding and unfolding drive mechanisms includes a driving member and a multi-link mechanism, one end of the driving member is connected to the fixed seat, the other end of the driving member is connected to the multi-link mechanism, one end of the multi-link mechanism is hinged to the fixed seat, and the other end of the multi-link mechanism is rotatably connected to the tray; When the driving member drives the multi-link mechanism to extend, the tray is unfolded relative to the stowage and extension driving mechanism, and the tray descends relative to the fixed base assembly; When the driving member drives the multi-link mechanism to move closer, the tray is folded relative to the stowage and extension driving mechanism, and the tray rises relative to the fixed base assembly; The multi-link mechanism comprises a first link, a second link and a third link, the first link and the second link are arranged at intervals, one end of the first link and the second link are hinged at different positions of the fixing seat, the other ends of the first link and the second link are hinged at different positions of the third link, and the tray is rotatably connected to the third link away from the first link and the second link; A folding auxiliary component, the folding auxiliary component comprises a fourth connecting rod and a fifth connecting rod which are rotatably connected, one end of the fourth connecting rod is rotatably connected to the third connecting rod and the tray, one end of the fifth connecting rod is rotatably connected to the middle part of the third connecting rod, and one end of the fifth connecting rod close to the fourth connecting rod is connected to a first pressing wheel; When the multi-link mechanism switches from extending to closing, the first pressure wheel contacts and squeezes the second link; The folding auxiliary assembly further comprises a fixed plate, one end of which is rotatably connected to the third connecting rod and the tray via a first rotating member, and the other end of which is rotatably connected to the fourth connecting rod and the tray via a second rotating member, and the rotation axes of the first rotating member and the second rotating member are parallel; A reversible front flap, the folding auxiliary assembly further comprising a second pressing wheel, a reset member, a first moving member and a second moving member, one end of the first moving member being connected to the second pressing wheel, the other end of the first moving member being slidably connected to the second moving member, the second moving member being connected to the front flap, one end of the reset member being connected to the fourth connecting rod, and the other end of the reset member being connected to the first moving member; When the multi-link mechanism switches from extension to closing, the second pressure wheel contacts the second connecting rod before the first pressure wheel, the second connecting rod squeezes the second pressure wheel, the second pressure wheel drives the first moving member to move relative to the second moving member, the reset member accumulates force, and the second moving member drives the front flap to flip to a horizontal position; When the second pressure wheel is separated from the second connecting rod, the reset member drives the first moving member to reset, and the second moving member drives the front flap to flip to a vertical position; A reversible transition guide rail, one end of which is rotatably connected to the fixing seat, and the other end of which can extend to the front flap, and a first avoidance hole is provided on the front flap to avoid the transition guide rail, and when the transition guide rail is flipped toward the tray, the transition guide rail overcomes the force of the reset member to flip the front flap from vertical to horizontal; The pallet is provided with a pallet guide rail. When the pallet is switched between unfolding and folding, the transition guide rail can overlap with the pallet guide rail and slide along the pallet guide rail.

2. The wheelchair lift according to claim 1, characterized in that: The driving member is located between the first connecting rod and the second connecting rod, one end of the driving member is connected to the fixing seat, and the output end of the driving member is connected to the second connecting rod.

3. The wheelchair lift according to claim 1, characterized in that: The third connecting rod is an angled connecting rod, comprising a first rod segment and a second rod segment connected at an angle, the first connecting rod and the second connecting rod are both hinged on the first rod segment, and the tray is arranged at one end of the second rod segment away from the first rod segment.

4. The wheelchair lift according to claim 1, characterized in that: A rolling groove is provided on a side of the second connecting rod facing the first pressing wheel, and the first pressing wheel rolls in the rolling groove after contacting the second connecting rod.

5. The wheelchair lift according to claim 1, characterized in that: It also includes an armrest, one end of which is connected to the fifth connecting rod, the third connecting rod is provided with a second avoidance hole penetrating along the thickness direction, and the other end of the armrest passes through the second avoidance hole and extends above the tray.

6. The wheelchair lift according to claim 1, characterized in that: The fixed base assembly also includes a connecting plate, two ends of which are respectively connected to the two fixing seats, and a passage opening is formed between the two fixing seats.

7. The wheelchair lift according to claim 1, characterized in that: The driving member is one of a hydraulic cylinder, an electric push rod and a pneumatic cylinder.

8. A vehicle, characterized in that: include: a vehicle body, the vehicle body having an entrance and an exit; A wheelchair lift, wherein the wheelchair lift is a wheelchair lift according to any one of claims 1-7, wherein the fixing seat is connected to the vehicle body, the tray can be extended from the entrance and exit, the tray can be raised and lowered relative to the vehicle body, and the tray can be rotated relative to the vehicle body.

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