Seat support structure, seat structure, and vehicle

Abstract

The application provides a seat supporting structure, a seat structure and a vehicle, the seat supporting structure comprising a base frame arranged on a seat, a driving part arranged on the base frame, a seat bowl slidingly arranged on the base frame through a first transmission mechanism, and a leg support arranged on the base frame through a second transmission mechanism; the driving part can drive the seat bowl and the leg support to move synchronously through the first transmission mechanism and the second transmission mechanism, and switch between a first state and a second state; in the first state, the seat bowl is accommodated on the top of the base frame, and the leg support is folded on the bottom of the base frame; in the second state, the front end of the seat bowl slides out of the base frame, and the leg support is unfolded in front of the base frame. The seat supporting structure is convenient for integrating the functions of the leg support and the front extension of the seat bowl, improving the comfort of the seat, the first transmission mechanism and the second transmission mechanism are driven by the driving part, the number of driving parts is reduced, the cost is reduced, and the space occupation is reduced.

Description

Technical Field

[0001] This invention relates to the field of vehicle component technology, and in particular to a seat support structure. Furthermore, this invention also relates to a seat structure and a vehicle. Background Technology

[0002] In recent years, with the rapid development of the automotive industry and the improvement of users' living standards, the market has continuously increased its demands for the functionality and comfort of car seats, leading to the emergence of mechanisms such as seat pan extensions and leg rests. However, due to the limitations of seat space, seat pan extensions and leg rests are often incompatible, and most seats can only perform one of their movement functions, which hinders further improvements in seat comfort.

[0003] Furthermore, due to the limitations of the drive structure of the seat extension mechanism and the leg support mechanism, if the seat simultaneously possesses both seat extension and leg support mechanisms, the core components of these two mechanisms would significantly increase the cost. Additionally, the existing leg support creates a gap between itself and the seat cushion when opened, affecting the aesthetics. Moreover, the existing leg support wobbles in the fore-and-aft direction when opened, impacting both refinement and comfort. Summary of the Invention

[0004] In view of this, the present invention aims to provide a seat support mechanism to improve seat comfort and reduce its cost.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A seat support structure includes a base frame disposed on a seat, a drive unit disposed on the base frame, a seat basin slidably disposed on the base frame via a first transmission mechanism, and a leg rest disposed on the base frame via a second transmission mechanism.

[0007] The drive unit has a first drive end and a second drive end. The first drive end is connected to the first transmission mechanism, and the second drive end is connected to the second transmission mechanism. The drive unit can drive the seat and the leg rest to move synchronously through the first transmission mechanism and the second transmission mechanism, and switch between the first state and the second state.

[0008] In the first state, the seat is stored on top of the base frame and the leg rest is folded at the bottom of the base frame. In the second state, the front end of the seat slides out of the base frame and the leg rest unfolds in front of the base frame.

[0009] Furthermore, the first transmission mechanism includes a transmission member with one end connected to the seat basin, and a connecting member rotatably disposed at the other end of the transmission member, and the first driving end is rotatably connected to the connecting member.

[0010] Further, there are two driving members arranged opposite to each other;

[0011] The connecting member comprises a connecting rod and a connecting plate arranged on the connecting rod;

[0012] Two ends of the connecting rod are respectively arranged on the driving members at corresponding ends through a riveting process, and the connecting member is rotationally connected with the first driving end through the connecting plate.

[0013] Further, the driving member comprises a connected support plate, an extension rod and a mounting plate;

[0014] One end of the support plate is connected to the seat pan, the extension rod is bent and has a transverse portion connected to the other end of the support plate, and a longitudinal portion extending toward the rear side of the transverse portion;

[0015] The mounting plate is arranged on the longitudinal portion, and the connecting member is arranged on the longitudinal portion.

[0016] Further, one of the base frame and the seat pan is provided with a sliding groove, and the other of the base frame and the seat pan is provided with a sliding block;

[0017] The sliding block comprises a main body and an abutting sleeve arranged on the main body, the main body is connected to the base frame or the seat pan, the sliding block abuts against the groove wall of the sliding groove through the abutting sleeve, and the abutting sleeve is made of plastic.

[0018] Further, the main body is in a n shape and has two flanges arranged opposite to each other, and the abutting sleeve is sleeved on the flanges; and / or,

[0019] The abutting sleeve is arranged along the length direction of the sliding block, and a notch is provided at a portion where the abutting sleeve abuts against the sliding groove, and a plurality of notches are arranged at intervals along the length direction of the abutting sleeve.

[0020] Further, the second transmission mechanism comprises a connecting rod unit arranged between the base frame and the leg rest;

[0021] The connecting rod unit comprises a first connecting rod and a second connecting rod which are respectively hinged to the front end and the rear end of the leg rest, and a third connecting rod and a fourth connecting rod which are hinged to the base frame at intervals along the front-rear direction of the seat;

[0022] Relative to the base frame, the other end of the first connecting rod is hinged to the third connecting rod, the second connecting rod is simultaneously hinged to the third connecting rod and the fourth connecting rod, and the second driving end is hinged to the third connecting rod.

[0023] Further, there are two connecting rod units arranged at intervals, and the third connecting rods of the two connecting rod units are connected via an intermediate rod;

[0024] The second driving end is hingedly connected to the third connecting rod via the intermediate rod.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The seat supporting mechanism according to the present invention is provided with a seat pan and a leg rest, and is provided with a first transmission mechanism and a second transmission mechanism, which facilitates integrating the functions of the leg rest and forward extension of the seat pan into the seat, improves the comfort of the seat. Moreover, both the first transmission mechanism and the second transmission mechanism are driven by the driving part, which is beneficial to reducing the number of driving components, lowering the cost and reducing space occupation. In the second state, the front end of the seat pan slides out of the base frame and is located between the leg rest and the base frame, thereby facilitating eliminating the gap between the leg rest and the base frame after the leg rest is unfolded, and can support the popliteal fossa of passengers, which is beneficial to further improving the comfort of the seat.

[0027] In addition, by arranging that the first transmission mechanism comprises a transmission member and a connecting member rotatably arranged on the transmission member, and the driving member is rotatably connected with the connecting member, the structure is simple and convenient for arrangement, and meanwhile, it is beneficial to absorbing the rotational motion generated when the driving part drives the leg rest to move, which facilitates realizing synchronous driving of the leg rest and the seat pan. Moreover, by arranging two oppositely disposed transmission members, it is beneficial to improving the stability of the driving part when driving the seat pan to move. And the connecting rod is connected with the transmission member through a riveting process, which is beneficial to restraining the shaking of the leg rest.

[0028] In addition, the transmission member comprises a connected supporting plate, an extension plate and a mounting plate, which has a simple structure and is convenient for arrangement. The provision of the mounting plate facilitates realizing the connection with the connecting rod through the riveting process. Moreover, by providing a sliding chute and a sliding block, the sliding connection between the base frame and the seat pan is easily realized, and the structure is simple and convenient for arrangement. The main body is arranged in a shape of Chinese character "ji", and the abutment sleeve is sleeved on the flange, which has a simple structure and is convenient for assembly.

[0029] Secondly, by arranging that the connecting rod unit comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the structure is simple, and it is easy to drive the leg rest to fold or unfold through the forward and backward movement of the second driving end. Moreover, by arranging two connecting rod units arranged at intervals and connecting the two third connecting rods via the intermediate rod, it is beneficial to improving the stability of the second driving end when driving the leg rest to move.

[0030] Another object of the present invention is to provide a seat structure, which is provided with the seat supporting structure as described above.

[0031] The present invention also provides a vehicle, which is provided with the seat structure as described above.

[0032] The seat structure and vehicle described in this invention have the same technical effects as the aforementioned seat support structure compared to the prior art, and will not be described in detail here. Attached Figure Description

[0033] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0034] Figure 1 This is a schematic diagram of the seat support mechanism described in an embodiment of the present invention from one perspective;

[0035] Figure 2 This is a structural schematic diagram of the seat support mechanism described in an embodiment of the present invention from another perspective;

[0036] Figure 3 This is a schematic diagram of the structure of the basin described in an embodiment of the present invention;

[0037] Figure 4 for Figure 3 Enlarged view of section A;

[0038] Figure 5 This is a schematic diagram of the drive unit and the first transmission mechanism according to an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the drive unit and the second transmission mechanism from one perspective according to an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the drive unit and the second transmission mechanism described in an embodiment of the present invention from another perspective;

[0041] Figure 8 This is a schematic diagram of the base frame and drive unit according to an embodiment of the present invention;

[0042] Figure 9 This is a schematic diagram of the base frame structure according to an embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram of the drive unit according to an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Base frame; 2. Drive motor; 3. Lead screw; 4. Seat basin; 5. Leg support; 6. Connecting rod; 7. Connecting plate; 8. Support plate; 9. Extension rod; 10. Mounting plate; 11. Slide groove; 12. Slider; 1201. Main body; 1202. Abutment sleeve; 13. Mounting hole; 14. Notch; 15. First connecting rod; 16. Second connecting rod; 17. Third connecting rod; 18. Fourth connecting rod; 19. Mounting bracket; 20. Intermediate connecting rod; 21. Intermediate rod. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0047] In the description of this invention, it should be noted that the directional terms used in this embodiment, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vertical, horizontal, and longitudinal directions of the vehicle. Specifically, the vertical direction of the vehicle is its height direction, the longitudinal direction is its length direction, and the horizontal direction is its width direction. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," and "connector" 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 invention in light of the specific circumstances.

[0049] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] Example 1

[0051] This embodiment relates to a seat support structure, which, in terms of its overall composition, is as follows: Figure 1 and Figure 2 As shown, the seat support structure includes a base frame 1 mounted on the seat, a drive unit mounted on the base frame 1, a seat basin 4 slidably mounted on the base frame 1 via a first transmission mechanism, and a leg rest 5 mounted on the base frame 1 via a second transmission mechanism. The drive unit has a first drive end and a second drive end. The first drive end is connected to the first transmission mechanism, and the second drive end is connected to the second transmission mechanism. The drive unit can drive the seat basin 4 and the leg rest 5 to move synchronously through the first and second transmission mechanisms, and switch between a first state and a second state.

[0052] In the first state, the seat basin 4 is stored on top of the base frame 1, and the leg rest 5 is folded at the bottom of the base frame 1. In the second state, the front end of the seat basin 4 slides out of the base frame 1, and the leg rest 5 unfolds in front of the base frame 1. It can be understood that in this embodiment, both the seat basin 4 and the leg rest 5 are provided, along with a first transmission mechanism and a second transmission mechanism, to facilitate the movement of the seat basin 4 and the leg rest 5, thereby integrating the functions of the leg rest 5 and the forward extension of the seat basin 4 into the seat, thus improving the comfort of the seat.

[0053] Furthermore, both the first and second transmission mechanisms are driven by a drive unit, which helps reduce the number of drive components, lowers costs, and reduces space occupation. In the second state, the front end of the seat basin 4 slides out of the base frame 1 and is positioned between the leg rest 5 and the base frame 1, thereby eliminating the gap between the leg rest 5 and the base frame 1 after it is extended, and providing support for the passenger's leg arches, further enhancing seat comfort.

[0054] Furthermore, it should be noted that the drive unit in this embodiment can be configured with reference to the structure of the leg rest motor commonly used in existing vehicles for driving the leg rest movement, such as... Figure 8 and Figure 10 As shown, it typically includes a lead screw 3 and a drive motor 2 that drives the lead screw 3 to rotate so that the lead screw 3 moves back and forth. The end of the lead screw 3 near the rear of the vehicle is the first drive end mentioned above, and the end of the lead screw near the front of the vehicle is the second drive end mentioned above.

[0055] And to facilitate the installation of drive motor 2, such as Figure 9 As shown, a mounting bracket 19 can be provided on the base frame 1, and a mounting hole 13 is provided on the mounting bracket 19. The drive motor 2 is installed in the mounting hole 13. In a specific implementation, the drive motor 2 is rotatably mounted in the mounting hole 13 so that during the movement of the leg support 5 and the seat 4, the drive motor 2 can adaptively adjust its own angle to facilitate the drive of the lead screw 3 to the first transmission mechanism and the second transmission mechanism.

[0056] Based on the above overview, as a preferred embodiment, in this example, the first transmission mechanism includes a transmission component connected at one end to the seat 4, and a connecting component rotatably disposed at the other end of the transmission component, with the first driving end rotatably connected to the connecting component. This arrangement is simple in structure and easy to arrange. Furthermore, by rotatably disposing the connecting component on the transmission component and rotatably connecting the first driving end to the connecting component, it facilitates the absorption of rotational motion generated when the driving unit drives the leg support 5, thus enabling synchronous driving of the leg support 5 and the seat 4.

[0057] As a preferred option, such as Figure 5As shown in the diagram, in this embodiment, there are two transmission components arranged opposite to each other, and the connecting component includes a connecting rod 6 and a connecting plate 7 disposed on the connecting rod 6. The two ends of the connecting rod 6 are respectively riveted to the corresponding ends of the transmission components, and the connecting component is rotatably connected to the first driving end via the connecting plate 7. By arranging the transmission components in two opposite directions, the stability of the driving unit when moving the driving seat 4 is improved. Furthermore, by including the connecting rod 6 and the connecting plate 7 in the connecting component, it is convenient to connect to the transmission components and the first driving end respectively.

[0058] Furthermore, since the leg rest 5 may sway in the front-to-back direction of the vehicle after being deployed, in this embodiment, because the first transmission mechanism and the second transmission mechanism are connected through a drive unit, and the connecting rod 6 is connected to the transmission component through a riveting process, the swaying of the leg rest 5 can be suppressed by the friction at the riveting position, thereby further improving the comfort of the passenger when sitting in the seat. It should be noted that in this embodiment, the two transmission components arranged opposite each other are only a preferred implementation method; in addition, only one transmission component may be provided.

[0059] In a preferred embodiment, the transmission component includes a support plate 8, an extension rod 9, and a mounting plate 10 connected together. One end of the support plate 8 is connected to the seat 4. The extension rod 9 is bent and has a transverse portion connected to the other end of the support plate 8, and a longitudinal portion extending to the rear of the transverse portion. The mounting plate 10 is disposed on the longitudinal portion, and the connecting member is disposed on the longitudinal portion. This arrangement is simple in structure, easy to arrange, and with the mounting plate 10, it is easy to connect with the connecting rod 6 via a riveting process.

[0060] To facilitate the sliding of the basin 4 relative to the base frame 1, a groove 11 can be provided on one of the base frame 1 and the basin 4, and a slider 12 can be provided on the other. The slider 12 includes a main body 1201 and an abutment sleeve 1202 disposed on the main body 1201. The main body 1201 is connected to the base frame 1 or the basin 4. The slider 12 abuts against the groove wall of the groove 11 through the abutment sleeve 1202, and the abutment sleeve 1202 is made of plastic. Figure 1 and Figure 3 As shown in the figure, in this embodiment, a sliding groove 11 is provided on the base frame 1, a slider 12 is provided on the seat basin 4, and the main body 1201 is connected to the seat basin 4.

[0061] By setting the sliding groove 11 and the slider 12, the sliding connection between the base frame 1 and the seat 4 can be easily realized, and the structure is simple and easy to arrange. Furthermore, by making the abutment sleeve 1202 into plastic, the overall sliding structure is lighter and the cost is lower. Moreover, the abutment sleeve 1202 can preferably be made of self-lubricating plastic to give the abutment sleeve 1202 good wear resistance and high temperature resistance.

[0062] Of course, in this embodiment, setting the slide groove 11 on the base frame 1 and the slider 12 on the seat basin 4 is only a preferred implementation. In other embodiments, the slide groove 11 can also be set on the seat basin 4, while the slider 12 can be set on the base frame 1. In addition, in specific implementation, by controlling the dimensional tolerances of the slide groove 11 and the slider 12, a certain frictional force can be generated between the slide groove 11 and the slider 12, and this frictional force can further suppress the swaying of the leg support 5 after it is unfolded.

[0063] As a preferred implementation method, such as Figure 4 As shown in the diagram, in this embodiment, the main body 1201 is U-shaped and has two opposing flanges, with the abutment sleeve 1202 fitted onto the flanges. The abutment sleeve 1202 is arranged along the length direction of the slider 12, and a notch 14 is provided at the part where the abutment sleeve 1202 abuts against the slide groove 11, and there are multiple notches 14 spaced apart along the length direction of the abutment sleeve 1202. By making the main body 1201 U-shaped and fitting the abutment sleeve 1202 onto the flanges, the structure is simple and easy to assemble. Furthermore, by providing notches 14 on the abutment sleeve 1202, grease can be stored in the notches 14 to achieve lubrication between the slider 12 and the slide groove 11.

[0064] Of course, in this embodiment, the main body 1201 can also be configured in other shapes, such as making the main body 1201 in the shape of an "I", and connecting the top of the main body 1201 to the basin 4, with the abutment sleeve 1202 fitted onto both ends of the bottom of the main body 1201. In addition, in other embodiments, it is also possible not to provide a notch 14 on the abutment sleeve 1202.

[0065] As a preferred option, such as Figure 6 and Figure 7 As shown in the diagram, in this embodiment, the second transmission mechanism includes a linkage unit disposed between the base frame 1 and the leg rest 5. The linkage unit includes a first link 15 and a second link 16, respectively hinged to the front and rear ends of the leg rest 5, and a third link 17 and a fourth link 18, hinged at intervals along the front-rear direction of the seat to the base frame 1. Relative to the base frame 1, the other ends of the first link 15 and the third link 17 are hinged together, the second link 16 is simultaneously hinged to both the third link 17 and the fourth link 18, and the second drive end is hinged to the third link 17. This configuration results in a simple structure and facilitates the folding or unfolding of the leg rest 5 by moving the second drive end forward and backward.

[0066] As a preferred implementation method, such as Figure 6As shown in the diagram, in this embodiment, two linkage units are spaced apart, and the third linkage 17 of the two linkage units are connected by an intermediate rod 21. The second drive end is hinged to the third linkage 17 via the intermediate rod 21. It can be understood that by having two linkage units spaced apart and connecting the two third linkages 17 via the intermediate rod 21, the stability of the second drive end when driving the leg support 5 is improved. In addition, an intermediate connecting rod 20 can be provided between the two first linkages 15 and the two fourth linkages 18 to further improve the stability of the leg support 5 during movement.

[0067] In this embodiment, when the seat support mechanism is in use, to switch the first and second transmission mechanisms from the first state to the second state, the drive motor 2 can drive the lead screw 3 to move forward. The rear end of the lead screw 3 can drive the connecting rod 6, the extension rod 9, and the support plate 8 to move forward, thereby moving the seat basin 4 forward. Furthermore, the front end of the lead screw 3 can push the intermediate rod 21 forward, which in turn drives the connecting rod unit to move, thus unfolding the leg rest 5. When switching the first and second transmission mechanisms from the second state to the first state, the drive motor 2 can drive the lead screw 3 to move backward; this will not be described in detail here.

[0068] The seat support mechanism of this embodiment facilitates the integration of the leg rest 5 and the forward extension of the seat basin 4, thereby improving seat comfort. It also reduces the number of drive components, lowers costs, reduces space occupation, and alleviates the swaying problem of the leg rest 5 after it is extended, further enhancing passenger comfort when sitting in the seat.

[0069] Example 2

[0070] This embodiment relates to a seat structure, which is provided with the seat support structure of Embodiment 1.

[0071] Furthermore, this embodiment also relates to a vehicle equipped with the aforementioned seat structure.

[0072] The seat structure and vehicle of this embodiment have the same technical effects as the seat support mechanism of Embodiment 1 compared to the prior art, and will not be described in detail here.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat support structure, characterized in that: It includes a base frame (1) on the seat, a drive unit on the base frame (1), a seat basin (4) slidably disposed on the base frame (1) via a first transmission mechanism, and a leg rest (5) disposed on the base frame (1) via a second transmission mechanism. The drive unit has a first drive end and a second drive end. The first drive end is connected to the first transmission mechanism, and the second drive end is connected to the second transmission mechanism. The drive unit can drive the seat (4) and the leg support (5) to move synchronously through the first transmission mechanism and the second transmission mechanism, and switch between the first state and the second state. In the first state, the seat basin (4) is stored on the top of the base frame (1), and the leg rest (5) is folded at the bottom of the base frame (1). In the second state, the front end of the seat basin (4) slides out of the base frame (1), and the leg rest (5) unfolds in front of the base frame (1). The first transmission mechanism includes a transmission component connected at one end to the seat (4), and a connecting component rotatably disposed at the other end of the transmission component, and the first driving end is rotatably connected to the connecting component. The transmission components are two oppositely arranged; the connecting component includes a connecting rod (6) and a connecting plate (7) disposed on the connecting rod (6); the two ends of the connecting rod (6) are respectively disposed on the corresponding end of the transmission component by a riveting process, and the connecting component is rotatably connected to the first driving end through the connecting plate (7); The transmission component includes a support plate (8), an extension rod (9), and a mounting plate (10) connected together; one end of the support plate (8) is connected to the seat basin (4), the extension rod (9) is bent and has a transverse portion connected to the other end of the support plate (8), and a longitudinal portion extending to the rear side of the transverse portion; the mounting plate (10) is disposed on the longitudinal portion, and the connector is disposed on the longitudinal portion; The second transmission mechanism includes a linkage unit disposed between the base frame (1) and the leg rest (5); the linkage unit includes a first link (15) and a second link (16) respectively hinged to the front and rear ends of the leg rest (5), and a third link (17) and a fourth link (18) hinged at intervals on the base frame (1) along the front and rear direction of the seat; relative to the base frame (1), the first link (15) is hinged to the other end of the third link (17), the second link (16) is hinged to both the third link (17) and the fourth link (18), and the second drive end is hinged to the third link (17); The linkage unit consists of two spaced-apart units, and the third link (17) of the two linkage units is connected by an intermediate rod (21); the second drive end is hinged to the third link (17) through the intermediate rod (21); The driving part comprises a screw rod (3) and a driving motor (2) driving the screw rod (3) to rotate so as to move the screw rod (3) back and forth, wherein one end of the screw rod (3) is a first driving end, and the other end is a second driving end; the base frame (1) is provided with a mounting bracket (19), the mounting bracket (19) is provided with a mounting hole (13), and the driving motor (2) is rotatably disposed in the mounting hole (13).

2. The seat supporting structure according to claim 1, characterized in that: One of the base frame (1) and the seat pan (4) is provided with a sliding groove (11), and the other of the base frame (1) and the seat pan (4) is provided with a sliding block (12); The sliding block (12) comprises a main body (1201) and an abutting sleeve (1202) disposed on the main body (1201), the main body (1201) is connected to the base frame (1) or the seat pan (4), the sliding block (12) abuts against the groove wall of the sliding groove (11) through the abutting sleeve (1202), and the abutting sleeve (1202) is made of plastic.

3. The seat supporting structure according to claim 2, characterized in that: The main body (1201) is in a shape of a Chinese character 'ji', and has two oppositely arranged flanges, and the abutting sleeve (1202) is sleeved on the flanges; and / or, The abutting sleeve (1202) is arranged along the length direction of the sliding block (12), a notch (14) is provided at a position where the abutting sleeve (1202) abuts against the sliding groove (11), and a plurality of notches (14) are arranged at intervals along the length direction of the abutting sleeve (1202).

4. A seat structure, characterized in that: The seat structure is provided with the seat supporting structure according to any one of claims 1 to 3.

5. A vehicle, characterized in that: The vehicle is provided with the seat structure according to claim 4.

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