Lifting devices and vehicles

Abstract

This utility model relates to the field of vehicle parts technology, and more particularly to a lifting device and a vehicle. The lifting device includes a guide mechanism, a lifting mechanism for connecting to the seat cushion, and a limiting mechanism for connecting to the vehicle frame. The lifting mechanism is connected to the limiting mechanism via the guide mechanism, and the guide mechanism can rise and fall relative to the limiting mechanism, thereby driving the lifting mechanism to rise and fall relative to the limiting mechanism. The vehicle includes the aforementioned lifting device. This utility model provides a lifting device and a vehicle to alleviate the technical problem in the prior art where the seat cushion height of vehicles cannot be adjusted to accommodate people of different heights.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a lifting device and a vehicle. Background Technology

[0002] Bicycles, electric bikes, and motorcycles are important modes of transportation, convenient and environmentally friendly, and are loved by people. Especially in today's big cities where road congestion is very serious, lightweight and flexible means of transportation are the first choice for people to travel. These vehicles are smaller in size than traditional fuel cars, are easy to learn and operate, and are quieter and safer when driving, making them very advantageous for short-distance travel.

[0003] Among them, the vehicle seat is generally a fixed seat, and the seat height cannot be adjusted according to the rider's height. It can only be adapted to riders of different heights by changing the seat or adjusting the shock absorption.

[0004] Therefore, this application provides a new lifting device and vehicle to address the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a lifting device to at least alleviate the technical problem in the prior art that the seat height of vehicles cannot be adjusted to suit people of different heights.

[0006] The purpose of this utility model is also to provide a vehicle that further alleviates the technical problem in the prior art that the seat height of the vehicle cannot be adjusted to suit people of different heights.

[0007] Based on the aforementioned first objective, this utility model provides a lifting device for a vehicle, the vehicle including a seat and a frame, the lifting device including a guide mechanism, a lifting mechanism for connecting the seat and a limiting mechanism for connecting the frame; The lifting mechanism is connected to the limiting mechanism through the guide mechanism. The guide mechanism can move up and down relative to the limiting mechanism, thereby driving the lifting mechanism to move up and down relative to the limiting mechanism.

[0008] Furthermore, the guiding mechanism includes a limiting block, which is connected to the lifting mechanism and can slide relative to the lifting mechanism; the limiting mechanism is provided with a limiting groove that matches the limiting block, and there are multiple limiting grooves, which are spaced apart along the height direction; The limiting block is disposed within the limiting groove and is slidable relative to the limiting groove; wherein, when the limiting block slides relative to the limiting groove in a first direction, the limiting block slides relative to the lifting mechanism until the limiting block disengages from the limiting groove, at which point the limiting block can rise and fall to correspond to other limiting grooves; when the limiting block is slid relative to the limiting groove in a second direction, the limiting block slides relative to the lifting mechanism, thereby allowing the limiting block to slide into the limiting groove, wherein the first direction is opposite to the second direction.

[0009] Furthermore, the limiting mechanism includes two limiting plates and a support plate connected between the two limiting plates, and the limiting groove is disposed on the limiting plate; The guiding mechanism includes two limiting blocks, which are respectively disposed in the limiting grooves on the two limiting plates.

[0010] Furthermore, the limiting plate is provided with multiple pairs of limiting protrusion groups, each pair of the limiting protrusion groups including two limiting protrusions spaced apart in the horizontal direction; Multiple pairs of the limiting protrusions are spaced apart along the height direction, and the limiting groove is formed between adjacent limiting protrusions.

[0011] Furthermore, the guiding mechanism also includes a guide rod and a slide. The guide rod is fixed to the limiting block, the slide is connected to the lifting mechanism, and a sliding cavity is provided inside the slide. The guide rod is disposed in the sliding cavity and can slide along the sliding cavity. When the limiting block slides relative to the limiting groove in the first direction, the limiting block drives the guide rod to slide along the sliding cavity until the limiting block disengages from the limiting groove. At this time, the limiting block can rise and fall to correspond to other limiting grooves. When the limiting block slides relative to the limiting groove in the second direction, the limiting block drives the guide rod to slide along the sliding cavity, so that the limiting block can slide into the limiting groove.

[0012] Furthermore, the carriage includes a guide seat and a guide cover, the guide seat is connected to the lifting mechanism, and the guide cover is connected to the guide seat, forming the sliding cavity between the two; The guiding mechanism also includes a return spring, which is sleeved outside the guide rod and disposed between the guide cover and the limiting block. When the limiting block slides relative to the limiting groove in the first direction, the limiting block overcomes the preload of the return spring and drives the guide rod to slide along the slide cavity, at which time the return spring is compressed.

[0013] Furthermore, the lifting mechanism includes a lifting plate and a mounting plate for connecting the seat cushion, the lifting plate being connected to the mounting plate, and the slide being connected to the lifting plate.

[0014] Furthermore, the lifting plate is provided with a load-bearing groove, and the limiting block is disposed in the load-bearing groove. When the limiting block slides relative to the limiting groove, the limiting block also slides relative to the load-bearing groove. When the limiting block slides relative to the limiting groove in a first direction, the limiting block can sequentially disengage from the load-bearing groove and the limiting groove. When the limiting block slides relative to the limiting groove in a second direction, the limiting block can slide through the limiting groove into the load-bearing groove, so that the limiting block is partially located in the limiting groove and partially located in the load-bearing groove.

[0015] Furthermore, the lifting device also includes an actuating mechanism; The actuation mechanism includes an actuation plate and a connecting plate connected to each other, and the connecting plate is connected to the limiting block.

[0016] By adopting the above technical solution, the lifting device of this utility model has at least the following beneficial effects: In this embodiment, the lifting device is installed by simply mounting the seat to the lifting mechanism and the limiting mechanism to the frame. The operation is simple and convenient. When the seat height needs adjustment, the guide mechanism is raised or lowered relative to the limiting mechanism, which in turn raises or lowers the lifting mechanism relative to the limiting mechanism. Since the seat is mounted on the lifting mechanism and the limiting mechanism is mounted on the frame, the seat rises or falls relative to the frame as the lifting mechanism rises or falls relative to the limiting mechanism, thus achieving seat height adjustment. Therefore, the seat height can be adjusted according to the rider's height, accommodating riders of different heights.

[0017] Based on the second objective mentioned above, this utility model provides a vehicle, which includes a frame, a seat cushion, and the aforementioned lifting device. The seat cushion is connected to the lifting mechanism of the lifting device via a subframe, and the limiting mechanism of the lifting device is connected to the frame.

[0018] By adopting the above technical solution, the vehicle of this utility model has at least the following beneficial effects: By installing the aforementioned lifting device inside the vehicle, the vehicle thus possesses all the advantages of the aforementioned lifting device, which will not be elaborated further here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1One of the structural schematic diagrams of the vehicle provided in the embodiment of this utility model; Figure 2 This is the second structural schematic diagram of the vehicle provided in the embodiment of the present utility model; Figure 3 An exploded view of the vehicle structure provided in an embodiment of this utility model; Figure 4 One of the structural schematic diagrams of the lifting device provided in the embodiment of this utility model; Figure 5 A second structural schematic diagram of the lifting device provided in an embodiment of this utility model (the actuating mechanism is not shown). Figure 6 The third structural schematic diagram of the lifting device provided in the embodiment of this utility model (the actuating mechanism is not shown, and only part of the lifting mechanism and the limiting mechanism are shown). Figure 7 This is an exploded view of the lifting device provided in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the guide mechanism in the lifting device provided in an embodiment of the present utility model; Figure 9 for Figure 8 Exploded view of the guide mechanism; Figure 10 This is a schematic diagram of the structure of the actuating mechanism in the lifting device provided in an embodiment of the present utility model; Figure 11 This is a schematic diagram of the lifting mechanism in the lifting device provided in the embodiment of the present utility model; Figure 12 This is a schematic diagram of the limiting mechanism in the lifting device provided in the embodiment of this utility model.

[0021] Figure label: 1-Seat cushion; 2-Subframe; 3-Frame; 4- Lifting device; 5-Guide mechanism; 51-Limit block; 52-Guide rod; 531-Guide seat; 532-Guide cover; 54-Return spring; 6-Lifting mechanism; 61-Lifting plate; 611-Bearing groove; 62-Mounting plate; 621-Second mounting hole; 7-Limiting mechanism; 71-Limiting plate; 711-Limiting groove; 712-First mounting hole; 713-Limiting protrusion; 72-Supporting plate; 8-Action mechanism; 81-Action plate; 82-Connecting plate. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1 Please see Figure 1 and Figure 7 This embodiment provides a lifting device 4 for a vehicle, which includes a seat cushion 1 and a frame 3. The lifting device 4 includes a guide mechanism 5, a lifting mechanism 6 for connecting the seat cushion 1, and a limiting mechanism 7 for connecting the frame 3. The lifting mechanism 6 is connected to the limiting mechanism 7 through the guide mechanism 5. The guide mechanism 5 can rise and fall relative to the limiting mechanism 7, thereby driving the lifting mechanism 6 to rise and fall relative to the limiting mechanism 7.

[0026] It should be noted that, in this embodiment, when installing the lifting device 4, the seat 1 is installed on the lifting mechanism 6, and the limiting mechanism 7 is installed on the frame 3. The operation is simple and convenient. When it is necessary to adjust the height of the seat 1, the guide mechanism 5 is raised or lowered relative to the limiting mechanism 7, thereby raising or lowering the lifting mechanism 6 connected to the guide mechanism 5 relative to the limiting mechanism 7. Since the seat 1 is installed on the lifting mechanism 6 and the limiting mechanism 7 is installed on the frame 3, when the lifting mechanism 6 is raised or lowered relative to the limiting mechanism 7, the seat 1 is raised or lowered relative to the frame 3, realizing the adjustment of the height of the seat 1. Thus, the height of the seat 1 can be adjusted according to the rider's height, which can accommodate people of different heights.

[0027] Preferably, please refer to Figure 8 and Figure 9 In this embodiment, the guide mechanism 5 includes a limiting block 51, which is connected to the lifting mechanism 6 and can slide relative to the lifting mechanism 6; the limiting mechanism 7 is provided with a limiting groove 711 that matches the limiting block 51, and multiple limiting grooves 711 are provided, which are spaced apart along the height direction; please refer to Figure 5 The limiting block 51 is disposed within the limiting groove 711 and can slide relative to the limiting groove 711. When the limiting block 51 slides relative to the limiting groove 711 in the first direction, the limiting block 51 slides relative to the lifting mechanism 6 until the limiting block 51 disengages from the limiting groove 711. At this time, the limiting block 51 can rise and fall to correspond to other limiting grooves 711. When the limiting block 51 is slid relative to the limiting groove 711 in the second direction, the limiting block 51 slides relative to the lifting mechanism 6, so that the limiting block 51 can slide into the limiting groove 711. The first direction is opposite to the second direction.

[0028] With this setup, when the height of the seat cushion 1 needs to be adjusted, the limiting block 51 slides relative to the limiting groove 711 in the first direction. At the same time, the limiting block 51 also slides relative to the lifting mechanism 6, causing the limiting block 51 to gradually move away from the limiting groove 711 until the limiting block 51 disengages from the limiting groove 711. At this point, the limiting block 51 can be raised or lowered to correspond to the limiting groove 711 at other heights. For example, when the height of the seat cushion 1 needs to be increased, the limiting block 51 is raised to correspond to the higher limiting groove 711, or when the height of the seat cushion 1 needs to be decreased, the limiting block 51 is lowered to correspond to the lower limiting groove 711. Then, the limiting block 51 is slid relative to the limiting groove 711 in the second direction, while the limiting block 51 slides relative to the lifting mechanism 6, so that the limiting block 51 gradually approaches the limiting groove 711 until the limiting block 51 slides into the corresponding limiting groove 711, thereby locking the limiting block 51.

[0029] The limiting block 51 is connected to the lifting mechanism 6, so that when the limiting block 51 rises or falls, the lifting mechanism 6 can rise or fall, thereby adjusting the height of the seat cushion connected to the lifting mechanism 6.

[0030] Preferably, please refer to Figure 12 In this embodiment, the limiting mechanism 7 includes two limiting plates 71 and a support plate 72 connected between the two limiting plates 71, and a limiting groove 711 is disposed on the limiting plate 71; the guiding mechanism 5 includes two limiting blocks 51, and the two limiting blocks 51 are respectively disposed in the limiting grooves 711 on the two limiting plates 71.

[0031] With this setup, when the height of the seat cushion 1 needs to be adjusted, the two limiting blocks 51 slide simultaneously relative to their respective limiting grooves 711, making the sliding of the limiting blocks 51 more stable and reliable. After the height of the seat cushion 1 is adjusted, the limiting grooves 711 on the two limiting plates 71 can support the two limiting blocks 51 simultaneously, thereby improving the load-bearing capacity of the guide mechanism 5. Since the seat cushion 1 is connected to the limiting blocks 51 through the lifting mechanism 6, the load-bearing capacity of the seat cushion 1 is also improved.

[0032] Optionally, please see Figure 6 and Figure 7 The limiting plate 71 is provided with a first mounting hole 712 for connecting the frame 3, and the frame 3 is connected to the limiting mechanism 7 through the first mounting hole 712.

[0033] Preferably, please refer to Figure 12 In this embodiment, the limiting plate 71 is provided with multiple pairs of limiting protrusions, each pair of limiting protrusions includes two limiting protrusions 713 spaced apart in the horizontal direction; the multiple pairs of limiting protrusions are spaced apart in the height direction, and a limiting groove 711 is formed between adjacent limiting protrusions.

[0034] It should be noted that the limiting plate 71 has at least two upper limiting grooves 711, so that the seat cushion 1 has at least two adjustable height levels. For example, the limiting plate 71 has two, three, or four upper limiting grooves 711. When there are two limiting grooves 711, there are three limiting protrusions along the height direction; when there are three limiting grooves 711, there are four limiting protrusions along the height direction, and so on.

[0035] Each pair of limiting protrusions includes two limiting protrusions 713 spaced apart in the horizontal direction. The two limiting protrusions 713 support the two sides of the limiting block 51, thus providing more stable and reliable support for the limiting block 51. In addition, the two limiting protrusions 713 are spaced apart so that when the limiting block 51 slides out of the limiting groove 711, the structure located between the two limiting blocks 51 can rise and fall when the limiting block 51 rises and falls, without interfering with the rise and fall of the structure located between the two limiting blocks 51.

[0036] Preferably, please refer to Figure 8 and Figure 9In this embodiment, the guiding mechanism 5 further includes a guide rod 52 and a slide. The guide rod 52 is fixed to the limiting block 51, and the slide is connected to the lifting mechanism 6. A sliding cavity is provided inside the slide, and the guide rod 52 is disposed in the sliding cavity and can slide along the sliding cavity. When the limiting block 51 slides relative to the limiting groove 711 in the first direction, the limiting block 51 drives the guide rod 52 to slide along the sliding cavity until the limiting block 51 disengages from the limiting groove 711. At this time, the limiting block 51 can rise and fall to correspond to other limiting grooves 711. The limiting block 51 is slid relative to the limiting groove 711 in the second direction, so that the limiting block 51 drives the guide rod 52 to slide along the sliding cavity, thereby the limiting block 51 can slide into the limiting groove 711.

[0037] It should be noted that the slide is connected to the lifting mechanism 6, the guide rod 52 is set in the slide cavity of the slide, and the guide rod 52 is fixed to the limiting block 51, thus realizing the connection between the limiting block 51 and the lifting mechanism 6; the guide rod 52 can slide along the slide cavity, the slide is connected to the lifting mechanism 6, and the guide rod 52 is fixed to the limiting block 51, thus realizing that the limiting block 51 can slide relative to the lifting mechanism 6.

[0038] Preferably, please refer to Figure 8 In this embodiment, the slide includes a guide seat 531 and a guide cover 532. The guide seat 531 is connected to the lifting mechanism 6, and the guide cover 532 is connected to the guide seat 531, forming a sliding cavity between them. The guide mechanism 5 also includes a return spring 54, which is sleeved outside the guide rod 52 and disposed between the guide cover 532 and the limiting block 51. When the limiting block 51 slides relative to the limiting groove 711 in the first direction, the limiting block 51 overcomes the preload of the return spring 54 and drives the guide rod 52 to slide along the sliding cavity. At this time, the return spring 54 is compressed.

[0039] With this setup, when the limiting block 51 slides in the first direction by external force, the return spring 54 is compressed. After the height of the seat cushion 1 is adjusted, the limiting block 51 is released. Under the pre-tightening force of the return spring 54, the return spring 54 automatically resets, causing the limiting block 51 to drive the guide rod 52 to slide in the second direction, so that the limiting block 51 automatically slides into the limiting groove 711, thus realizing the automatic locking of the height of the seat cushion 1.

[0040] Preferably, please refer to Figure 11 In this embodiment, the lifting mechanism 6 includes a lifting plate 61 and a mounting plate 62 for connecting the seat cushion 1. The lifting plate 61 is connected to the mounting plate 62, and the slide is connected to the lifting plate 61.

[0041] Optionally, please see Figure 11 In this embodiment, the mounting plate 62 is provided with a second mounting hole 621 for connecting the seat cushion 1.

[0042] With this configuration, the lifting of the carriage can drive the lifting plate 61 to rise and fall, thereby adjusting the height of the seat cushion 1 connected to the mounting plate 62.

[0043] Preferably, please refer to Figure 6 In this embodiment, the lifting plate 61 is provided with a load-bearing groove 611, and the limiting block 51 is disposed in the load-bearing groove 611. When the limiting block 51 slides relative to the limiting groove 711, the limiting block 51 also slides relative to the load-bearing groove 611. When the limiting block 51 slides relative to the limiting groove 711 in the first direction, the limiting block 51 can sequentially disengage from the load-bearing groove 611 and the limiting groove 711. When the limiting block 51 slides relative to the limiting groove 711 in the second direction, the limiting block 51 can slide through the limiting groove 711 into the load-bearing groove 611, so that the limiting block 51 is partially located in the limiting groove 711 and partially located in the load-bearing groove 611.

[0044] With this configuration, the limiting block 51 is partially located in the limiting groove 711 and partially located in the load-bearing groove 611, so that the lifting plate 61 and the limiting plate 71 can simultaneously support the limiting block 51, thereby improving the load-bearing capacity of the seat cushion 1.

[0045] Preferably, please refer to Figure 4 and Figure 10 In this embodiment, the lifting device 4 also includes an action mechanism 8, which includes an action plate 81 and a connecting plate 82 connected to each other. The connecting plate 82 is connected to the limiting block 51.

[0046] With this setup, by operating the action plate 81, the action plate 81 can drive the limit block 51 to slide and rise and fall via the connecting plate 82, which facilitates the adjustment of the height of the seat cushion 1.

[0047] In summary, the steps for adjusting the height of the seat cushion 1 using the lifting device 4 in this embodiment are as follows: Pull the action plate 81 of the action mechanism 8 in the first direction. The action plate 81 drives the limiting block 51 to slide outward along the limiting groove 711 through the connecting plate 82. As a result, the guide rod 52 slides in the sliding cavity against the preload of the return spring 54. At this time, the return spring 54 is compressed until the limiting block 51 disengages from the load-bearing groove 611 and the limiting groove 711 in sequence.

[0048] Then, the action plate 81 is raised or lowered, so that the action plate 81 drives the limit block 51 to rise and fall to correspond with the limit groove 711 located above or below through the connecting plate 82. Thus, the limit block 51 drives the lifting plate 61 to rise and fall by the guide rod 52 and the slide, so that the mounting plate 62 rises and falls, and finally the seat cushion 1 is raised and lowered.

[0049] Release the action plate 81, the return spring 54 resets, and the guide rod 52 slides in the second direction in the sliding cavity through the limit block 51, so that the limit block 51 enters the corresponding limit groove 711, and the height of the seat cushion 1 is maintained.

[0050] Example 2 Embodiment 2 provides a vehicle that includes the lifting device 4 of Embodiment 1. The technical features of the lifting device 4 disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the lifting device 4 disclosed in Embodiment 1 will not be described again. The implementation of the seat cushion 1 system will be further described in detail below with reference to the accompanying drawings.

[0051] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of a vehicle with the seat cushion 1 not raised. Figure 2 This is a schematic diagram of a vehicle with the seat cushion 1 raised. The vehicle provided in this embodiment includes a frame 3, a seat cushion 1 and the aforementioned lifting device 4. The seat cushion 1 is connected to the lifting mechanism 6 of the lifting device 4 via a subframe 2, and the limiting mechanism 7 of the lifting device 4 is connected to the frame 3.

[0052] The vehicle can be, for example, a bicycle, a two-wheeled electric vehicle, a three-wheeled electric vehicle, or a motorcycle, which alleviates the technical problem in the existing technology that the height of the vehicle seat 1 cannot be adjusted to suit people of different heights.

[0053] The vehicle in this embodiment has the advantages of the lifting device 4 in Embodiment 1, which have been described in detail in Embodiment 1 and will not be repeated here.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lifting device for a vehicle, said vehicle comprising a seat cushion (1) and a frame (3), characterized in that, The lifting device includes a guide mechanism (5), a lifting mechanism (6) for connecting the seat cushion (1), and a limiting mechanism (7) for connecting the frame (3). The lifting mechanism (6) is connected to the limiting mechanism (7) through the guide mechanism (5). The guide mechanism (5) can move up and down relative to the limiting mechanism (7), thereby the guide mechanism (5) drives the lifting mechanism (6) to move up and down relative to the limiting mechanism (7).

2. The lift device of claim 1, wherein, The guide mechanism (5) includes a limiting block (51), which is connected to the lifting mechanism (6) and can slide relative to the lifting mechanism (6); the limiting mechanism (7) is provided with a limiting groove (711) that matches the limiting block (51), and there are multiple limiting grooves (711) that are spaced apart along the height direction; The limiting block (51) is disposed within the limiting groove (711) and is slidable relative to the limiting groove (711); wherein, when the limiting block (51) slides relative to the limiting groove (711) in a first direction, the limiting block (51) slides relative to the lifting mechanism (6) until the limiting block (51) disengages from the limiting groove (711), at which time the limiting block (51) can rise and fall to correspond to other limiting grooves (711); the limiting block (51) is slid relative to the limiting groove (711) in a second direction, so that the limiting block (51) slides relative to the lifting mechanism (6), thereby the limiting block (51) can slide into the limiting groove (711), the first direction being opposite to the second direction.

3. The lift device of claim 2, wherein, The limiting mechanism (7) includes two limiting plates (71) and a support plate (72) connected between the two limiting plates (71), and the limiting groove (711) is disposed on the limiting plate (71). The guiding mechanism (5) includes two limiting blocks (51), which are respectively disposed in the limiting grooves (711) on the two limiting plates (71).

4. The lift device of claim 3, wherein, The limiting plate (71) is provided with multiple pairs of limiting protrusions, each pair of the limiting protrusions including two limiting protrusions (713) spaced apart in the horizontal direction. Multiple pairs of the limiting protrusions are spaced apart along the height direction, and the limiting groove (711) is formed between adjacent limiting protrusions.

5. The lift device of claim 3, wherein, The guiding mechanism (5) further includes a guide rod (52) and a slide. The guide rod (52) is fixed to the limiting block (51). The slide is connected to the lifting mechanism (6). A sliding cavity is provided inside the slide. The guide rod (52) is located inside the sliding cavity and can slide along the sliding cavity. When the limiting block (51) slides relative to the limiting groove (711) in the first direction, the limiting block (51) drives the guide rod (52) to slide along the sliding cavity until the limiting block (51) disengages from the limiting groove (711). At this time, the limiting block (51) can rise and fall to correspond to other limiting grooves (711). When the limiting block (51) is slid relative to the limiting groove (711) in the second direction, the limiting block (51) drives the guide rod (52) to slide along the sliding cavity, so that the limiting block (51) can slide into the limiting groove (711).

6. The lift device of claim 5, wherein, The carriage includes a guide seat (531) and a guide cover (532). The guide seat (531) is connected to the lifting mechanism (6), and the guide cover (532) is connected to the guide seat (531), forming the sliding cavity between them. The guide mechanism (5) also includes a return spring (54), which is sleeved outside the guide rod (52) and located between the guide cover (532) and the limiting block (51). When the limiting block (51) slides relative to the limiting groove (711) in the first direction, the limiting block (51) overcomes the preload of the return spring (54) and drives the guide rod (52) to slide along the slide cavity. At this time, the return spring (54) is compressed.

7. The lift device of claim 5, wherein, The lifting mechanism (6) includes a lifting plate (61) and a mounting plate (62) for connecting the seat cushion (1). The lifting plate (61) is connected to the mounting plate (62), and the slide is connected to the lifting plate (61).

8. The lift device of claim 7, wherein, The lifting plate (61) is provided with a load-bearing groove (611), and the limiting block (51) is disposed in the load-bearing groove (611). When the limiting block (51) slides relative to the limiting groove (711), the limiting block (51) also slides relative to the load-bearing groove (611). When the limiting block (51) slides relative to the limiting groove (711) in the first direction, the limiting block (51) can sequentially disengage from the load-bearing groove (611) and the limiting groove (711). When the limiting block (51) slides relative to the limiting groove (711) in the second direction, the limiting block (51) can slide through the limiting groove (711) into the load-bearing groove (611), so that the limiting block (51) is partially located in the limiting groove (711) and partially located in the load-bearing groove (611).

9. Lift according to any of claims 2-8, characterized in that The lifting device also includes an actuating mechanism (8). The actuation mechanism (8) includes an actuation plate (81) and a connecting plate (82) connected to each other, and the connecting plate (82) is connected to the limiting block (51).

10. A vehicle characterized by comprising: The vehicle includes a frame (3), a seat (1), and a lifting device (4) as described in any one of claims 1-9. The seat (1) is connected to the lifting mechanism (6) of the lifting device (4) via a subframe (2), and the limiting mechanism (7) of the lifting device (4) is connected to the frame (3).

Images