A type of seat and car

Abstract

This application provides a seat and an automobile, belonging to the automotive field. It includes a base, a first seat cushion, a second seat cushion mounted on the base, and an adjustment device. The first seat cushion can move relative to the second seat cushion via the adjustment device, allowing the seat to switch between a first state, a second state, and a third state. In the first state, the first and second seat cushions are arranged in a front-to-back direction at a first preset distance; in the second state, the first and second seat cushions are arranged in a front-to-back direction at a second preset distance, where the second preset distance is greater than the first preset distance; and in the third state, the first and second seat cushions are arranged vertically. The seat of this application embodiment allows the first seat cushion to move relative to the second seat cushion via the adjustment device. It can also switch between the first, second, and third states by stacking the first seat cushion on top of the second seat cushion. The seat has multiple functions, solving the problem of limited functionality.

Description

Technical Field

[0001] This invention belongs to the automotive field, specifically relating to a seat and an automobile. Background Technology

[0002] Car seats are for people to sit on, but the seats in related technologies have limited functions and are difficult to adapt to users' adjustment needs. Summary of the Invention

[0003] In view of this, the embodiments of this application aim to provide a seat and a car that solve the problem of limited seat functionality and can better adapt to the user's adjustment needs.

[0004] This application provides a seat, including a base and a first seat cushion and a second seat cushion mounted on the base;

[0005] It also includes an adjustment device, through which the first seat cushion can move relative to the second seat cushion to allow the seat to switch between a first state, a second state, and a third state;

[0006] In the first state, the first seat cushion and the second seat cushion are arranged in the front-to-back direction at a first preset distance. In the second state, the first seat cushion and the second seat cushion are arranged in the front-to-back direction at a second preset distance, the second preset distance being greater than the first preset distance. In the third state, the first seat cushion and the second seat cushion are arranged in the up-down direction.

[0007] In some embodiments, the adjustment device includes a first adjustment component and a second adjustment component. The first adjustment component is mounted on the first seat cushion, and the second adjustment component spans the first seat cushion and the base. The first seat cushion is adjusted relative to the second seat cushion in a front-to-back direction by the first adjustment component. The second adjustment component is used to switch the state of the first adjustment component so that the first seat cushion is moved out of the base by operating the first adjustment component.

[0008] In some embodiments, the first seat cushion forms a slide, and the base includes:

[0009] The base body has a receiving cavity formed on it;

[0010] A slide rail is installed on the base body, and the slide rail is located on opposite sides of the receiving cavity along a preset direction. The slide table is movably disposed on the slide rail.

[0011] In some embodiments, the second adjustment component includes a limiting block and an unlocking device. The unlocking device is disposed on the first seat cushion and is used to switch the state of the first adjustment component so that the projection area of ​​the first adjustment component in the front-back direction is offset from the projection area of ​​the limiting block in the front-back direction. The limiting block is connected to the slide rail. When the seat is in the first state or the second state, the slide is located between the limiting block and the second seat cushion in the front-back direction. The projection area of ​​the locking pin component in the front-back direction can at least partially overlap with the projection area of ​​the limiting block in the front-back direction to prevent the first seat cushion from disengaging from the slide rail.

[0012] In some embodiments, the unlocking device includes an operating device, a turntable, and a locking tongue. The turntable is rotatably connected to the first seat cushion. The operating device is disposed on one side of the turntable, and a locking tongue is disposed on the side of the turntable opposite to the operating device. A groove is formed on the guide device, and the locking tongue can move in the groove. Under the action of the operating device, the turntable rotates, causing the locking tongue to leave the groove. The guide device continues to move forward until the projection area of ​​the locking pin assembly in the front-back direction is misaligned with the projection area of ​​the limiting block in the front-back direction, so that the first seat cushion is removed from the base.

[0013] In some embodiments, the first seat cushion is formed with a guide member, and the latch is movably disposed within the guide member to allow the latch to move in a preset direction.

[0014] In some embodiments, a limiting hole is formed on the base, the first seat cushion has a first stop portion, and the first adjustment assembly includes:

[0015] A guide device is movably disposed on the first seat cushion in a front-back direction. The guide device forms an installation cavity. The wall surface of the installation cavity along a preset direction is a guide surface. The preset direction is intersected with the front-back direction. The distance between the guide surface and the first stop part along the preset direction is a target distance. The target distance gradually increases from front to back. The limiting hole is located on at least one side of the guide device along the preset direction.

[0016] A locking pin assembly is provided between the guide device and the limiting hole. The locking pin assembly has an abutment portion located in the mounting cavity at one end facing the guide surface. The abutment portion abuts against the side of the guide surface facing the mounting cavity. The locking pin assembly is movably mounted on the first seat cushion. The locking pin assembly has a protrusion.

[0017] The reset member abuts against the protrusion and the first stop respectively, and the reset member is used to drive the locking pin assembly to move toward the limiting hole.

[0018] In some embodiments, the first adjustment assembly further includes a reset device; the reset device includes a support and an elastic element, the guide device is provided with the support on one side along the forward direction of the first seat, the elastic element is sleeved on the support and abuts against the guide device, the first seat has a second stop portion, the support passes through the second stop portion, and the elastic element abuts against the rear side of the second stop portion.

[0019] In some implementations, the rear of the first seat cushion is provided with an interface for insertion into the base. When the interface is inserted into the base, the seat is in the third state.

[0020] This application also provides an automobile, including a chassis, a driver's cab, and a seat of any of the above-mentioned types, wherein the seat is disposed in the driver's cab, and the chassis is used to support the driver's cab.

[0021] The seat in this embodiment uses an adjustment device to allow the first seat cushion to move relative to the second seat cushion, enabling the seat to switch between a first and a second state and adjusting its length to meet the seating needs of passengers of different heights. Furthermore, by stacking the first seat cushion on top of the second seat cushion, the seat can be used as a child seat in a third state. This multi-functionality solves the problem of single-function seats and better adapts to users' adjustment needs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a seat according to an embodiment of the present application, wherein the first seat cushion and the second seat cushion are arranged in the front-to-back direction;

[0023] Figure 2 This is a schematic diagram of a seat according to another embodiment of the present application, in which a first seat cushion is stacked on a second seat cushion;

[0024] Figure 3 This is a schematic diagram of a first seat cushion according to an embodiment of this application;

[0025] Figure 4 This is an assembly diagram of the base and the second cushion according to an embodiment of this application;

[0026] Figure 5 This is an assembly diagram of the first and second adjustment components according to an embodiment of this application;

[0027] Figure 6 This is an assembly diagram of a turntable, locking tongue, first seat cushion, and guide device according to an embodiment of this application;

[0028] Figure 7This is an assembly diagram of the locking tongue and the first seat cushion according to an embodiment of this application, showing the pivot and reinforcing ribs.

[0029] Explanation of reference numerals in the attached figures

[0030] First seat cushion 1; First adjustment component 11; Guide device 111; Mounting cavity 1111; Guide surface 1112; Groove 1113; Locking pin assembly 112; Abutment part 1121; Protrusion 1122; Reset part 113; Reset device 114; Handle 115; Support column 1141; Elastic element 1142; First stop part 12; Slide table 13; Second stop part 14; Interface 15; Base 2; Base body 21; Receiving cavity 211; Slide rail 22; Limiting hole 221; Limiting block 222; Rotating shaft 23; Reinforcing rib 24; Second seat cushion 3; Unlocking device 4; Operating device 41; Turntable 42; Locking tongue 43. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0032] This application provides a seat; please refer to the embodiment of the application. Figures 1 to 7 The system includes a base 2, a first seat cushion 1 and a second seat cushion 3 mounted on the base 2, and an adjustment device. The first seat cushion 1 can move relative to the second seat cushion 3 via the adjustment device, so that the seat can be switched between a first state, a second state, and a third state.

[0033] In the first state, the first seat cushion 1 and the second seat cushion 3 are arranged in the front-to-back direction at a first preset distance. In the second state, the first seat cushion 1 and the second seat cushion 3 are arranged in the front-to-back direction at a second preset distance, and the second preset distance is greater than the first preset distance. In the third state, the first seat cushion 1 and the second seat cushion 3 are arranged in the up-down direction.

[0034] The seat in this embodiment allows the first seat cushion 1 to move relative to the second seat cushion 3 via an adjustment device, enabling the seat to switch between a first state and a second state and adjusting the seat length to meet the seating needs of passengers of different heights. Simultaneously, by stacking the first seat cushion 1 on top of the second seat cushion 3, the seat can be used as a child seat in a third state. This gives the seat multiple functions, solving the problem of single-function seats and better adapting to users' adjustment needs.

[0035] For example, for shorter people, the first seat cushion 1 can be moved forward relative to the second seat cushion 3, and the first seat cushion 1 and the second seat cushion 3 are arranged in the front-to-back direction at a first preset distance, so that the seat is in a first state to accommodate shorter passengers.

[0036] For example, for taller people, the first seat cushion 1 can be moved forward relative to the second seat cushion 3, and the first seat cushion 1 and the second seat cushion 3 are arranged in the front-to-back direction at a second preset distance, so that the seat is in a second state to accommodate taller passengers.

[0037] For example, the first seat cushion 1 is stacked on top of the second seat cushion 3, and the first seat cushion 1 and the second seat cushion 3 are arranged in the vertical direction so that the seat is in a third state, at which time the seat can be used as a child seat.

[0038] In some embodiments, please refer to Figure 1 and Figure 2 The adjustment device includes a first adjustment component 11 and a second adjustment component. The first adjustment component 11 is installed on the first seat cushion 1, and the second adjustment component spans the first seat cushion 1 and the base 2. The first seat cushion 1 is adjusted relative to the second seat cushion 3 in the front-back direction by the first adjustment component 11. The second adjustment component is used to switch the state of the first adjustment component 11 so that the first seat cushion 1 can be moved out of the base 2 by operating the first adjustment component 11.

[0039] In this embodiment, the first seat cushion 1 is adjusted relative to the second seat cushion 3 in the front-to-back direction via the first adjustment component 11. However, at this time, the first seat cushion 1 can only change its position relative to the second seat cushion 3; the first seat cushion 1 cannot be moved out of the base 2. Only by switching the state of the first adjustment component 11 via the second adjustment component can the first seat cushion 1 be moved out of the base 2 by operating the first adjustment component 11, thereby switching the seat from the second state to the third state and achieving the reuse effect of the seat.

[0040] In some embodiments, please refer to Figure 3 and Figure 4 A limiting hole 221 is formed on the base 2, and a first stop portion 12 is formed on the first cushion 1.

[0041] Exemplarily, the first adjustment assembly 11 includes: a guide device 111, a locking pin assembly 112, and a reset member 113. The guide device 111 is movably disposed on the first seat cushion 1 in a front-to-back direction. The guide device 111 forms a mounting cavity 1111. The wall surface of the mounting cavity 1111 along a preset direction is a guide surface 1112. The preset direction intersects the front-to-back direction. The distance between the guide surface 1112 and the first stop portion 12 along the preset direction is a target distance, which gradually increases from front to back. The limiting hole 221 is located on at least one side of the guide device 111 along the preset direction.

[0042] A locking pin assembly 112 is provided between the guide device 111 and the limiting hole 221. One end of the locking pin assembly 112 facing the guide surface 1112 has an abutment portion 1121 located in the mounting cavity 1111. The abutment portion 1121 abuts against the side of the guide surface 1112 facing the mounting cavity 1111. The locking pin assembly 112 is movably mounted on the first seat cushion 1, and the locking pin assembly 112 has a protrusion 1122.

[0043] The reset member 113 abuts against the protrusion 1122 and the first stop 12 respectively, and the reset member 113 is used to drive the locking pin assembly 112 to move toward the limiting hole 221.

[0044] In this embodiment, the end of the locking pin assembly 112 facing away from the guide surface 1112 is inserted into the limiting hole 221 to lock the first seat 1 and the base 2. When the first adjustment assembly 11 is pulled forward, the distance (target distance) between the guide surface 1112 and the first stop part 12 in the preset direction gradually increases from front to back. During the forward movement of the first adjustment assembly 11, due to the limiting effect of the guide surface 1112 on the locking pin assembly 112, the guide device 111 pulls the abutment part 1121 of the locking pin assembly 112, causing the locking pin assembly 112 to gradually move towards one side of the mounting cavity 1111. The end of the locking pin assembly 112 facing away from the guide surface 1112 is inserted and disengaged from the limiting hole 221. At this time, the reset member 113 is in a compressed state. When the force applied to the first adjusting component 11 is stopped, the reset component 113 applies force to the protrusion 1122 for the purpose of resetting. The end of the locking pin component 112 away from the guide surface 1112 is inserted into the limiting hole 221, and the limiting hole 221 realizes the movement limitation of the first adjusting component 11.

[0045] By setting the shape of the guide device 111 and cooperating with the reset member 113 and the locking pin assembly 112, the locking and releasing of the guide device 111 are achieved.

[0046] It should be noted that the orientation of the preset direction is not limited, as long as the preset direction intersects with the front-back direction. In some embodiments, the preset direction is perpendicular to the front-back direction.

[0047] The form of the reset member 113 is not limited. In some embodiments, the reset member 113 is a spring. In other embodiments, the reset member 113 is an elastic diaphragm.

[0048] It should be noted that the application position of the first adjusting component 11 is not limited. In some embodiments, please refer to... Figure 3 The first adjustment component 11 also includes a handle 115 connected to the guide device 111. The handle 115 is located at the front end of the guide device 111. The operator can move the guide device 111 back and forth by applying force to the handle 115.

[0049] In one embodiment, please refer to Figure 4 The base 2 includes a base 2 body and a slide rail 22. A receiving cavity 211 is formed on the base body 21. The slide rail 22 is mounted on the base body 2. The slide rail 22 is located on opposite sides of the receiving cavity 211 along a predetermined direction. The first cushion 1 has a slide platform 13, which is movably disposed on the slide rail 22.

[0050] In this embodiment, since the slide 13 formed by the first seat cushion 1 is movably disposed on the slide rail 22, the first seat cushion 1 moves relative to the slide rail 22 along the extension direction of the slide rail 22.

[0051] In some embodiments, a limiting hole 221 is formed on the slide rail 22.

[0052] The form of the slide rail 22 is not limited, as long as it ensures the strength required to support the slide table 13 and allows for smooth movement of the slide table 13. In some embodiments, a roller-type slide rail 22 may be used, and in other embodiments, a ball bearing-type slide rail 22 may be used.

[0053] In one embodiment, the second adjustment component includes a limiting block 222 and an unlocking device 4. The unlocking device 4 is disposed on the first seat cushion 1. The unlocking device 4 is used to switch the state of the first adjustment component 11 so that the projection area of ​​the first adjustment component 11 in the front-back direction is offset from the projection area of ​​the limiting block 222 in the front-back direction. The limiting block 222 is connected to the slide rail 22. When the seat is in the first state or the second state, the slide 13 is located between the limiting block 222 and the second seat cushion 3 in the front-back direction. The projection area of ​​the locking pin assembly 112 in the front-back direction can at least partially overlap with the projection area of ​​the limiting block 222 in the front-back direction to prevent the first seat cushion 1 from disengaging from the slide rail 22.

[0054] In this embodiment, since the projection area of ​​the locking pin assembly 112 along the front-back direction can at least partially overlap with the projection area of ​​the limiting block 222 along the front-back direction, that is, the limiting block 222 can abut against the locking pin assembly 112 to prevent the locking pin assembly 112 from continuing to move forward, thereby preventing the first seat cushion 1 from coming off the base 2.

[0055] In one embodiment, please refer to Figure 5 The unlocking device 4 includes an operating device 41, a turntable 42, and a locking tongue 43. The turntable 42 is rotatably connected to the first seat cushion 1. The operating device is located on one side of the turntable 42, and the locking tongue 43 is located on the side of the turntable 42 opposite to the operating device. A groove 1113 is formed on the guide device 111, and the locking tongue 43 can move in the groove 1113. Under the action of the operating device, the turntable 42 rotates, causing the locking tongue 43 to leave the groove 1113. The guide device 111 continues to move forward until the projection area of ​​the locking pin assembly 112 in the front-back direction is misaligned with the projection area of ​​the limiting block 222 in the front-back direction, so that the first seat cushion 1 is removed from the base 2.

[0056] In this embodiment, since the locking tongue 43 leaves the groove 1113 on the guide device 111, the restriction of the locking tongue 43 on the first adjustment component 11 is released, allowing the first adjustment component 11 to continue to move forward. During the forward movement of the first adjustment component 11, due to the restriction effect of the guide surface 1112 on the locking pin component 112, the mounting cavity 1111 further pulls the abutting part 1121 of the locking pin component 112, causing the locking pin component 112 to continue to move closer to one side of the mounting cavity 1111 until the projection area of ​​the locking pin component 112 in the front-back direction is misaligned with the projection area of ​​the limiting block 222 in the front-back direction, which can effectively realize the removal of the first seat cushion 1 from the base 2.

[0057] In one embodiment, please refer to Figure 6 and Figure 7 The first seat cushion 1 has a pivot 23 and reinforcing ribs 24 surrounding the pivot 23. The reinforcing ribs 24 are arranged at intervals along the circumference of the pivot 23. The turntable 42 is fitted onto the pivot 23, and the reinforcing ribs 24 are supported on the turntable 42.

[0058] In this embodiment, by having the turntable 42 sleeved on the rotating shaft 23 and the reinforcing rib 24 supported on the turntable 42, direct contact between the turntable 42 and the first seat cushion 1 is avoided, and the friction between the turntable 42 and the first seat cushion 1 during rotation is reduced.

[0059] The material of the reinforcing rib 24 is not limited. In some embodiments, the reinforcing rib 24 is made of materials such as 40Cr, 304 stainless steel, 45# steel, and ductile iron.

[0060] In one embodiment, please refer to Figure 2 and Figure 5 The first adjustment assembly 11 also includes a reset device 114. The reset device 114 includes a support column 1141 and an elastic element 1142. The guide device 111 is provided with a support column 1141 on one side along the forward direction of the first seat cushion 1. The elastic element 1142 is sleeved on the support column 1141 and abuts against the guide device 111. The first seat cushion 1 forms a second stop portion 14. The support column 1141 passes through the second stop portion 14, and the elastic element 1142 abuts against the rear side of the second stop portion 14.

[0061] In this embodiment, during the forward pulling of the first adjusting component 11, the elastic element 1142 is in a compressed state. When the force applied to the first adjusting component 11 is stopped, the elastic element 1142 is in a state of reset, and applies a force to the guide device 111 to move backward, causing the guide device 111 to move backward, causing the locking pin component 112 to move away from the mounting cavity 1111. The end of the locking pin component 112 away from the guide surface 1112 is inserted into the limiting hole 221, thereby limiting the first adjusting component 11 by the limiting hole 221.

[0062] The type of elastic element 1142 is not limited. In some embodiments, the elastic element 1142 is a spring. In other embodiments, the elastic element 1142 is a bellows.

[0063] The material of the support column 1141 is not limited. In some embodiments, the support column 1141 is made of 40Cr, 304 stainless steel, 45# steel, ductile iron, etc. In other embodiments, the support column 1141 is made of hard plastics such as bakelite (phenolic plastic), carbon fiber reinforced polymer / plastic, ABS plastic (Acrylonitrile Butadiene Styrene plastic), etc.

[0064] In one embodiment, please refer to Figure 6 and Figure 7 The first seat cushion 1 is formed with a guide member, and the locking tongue 43 is movably disposed in the guide member so that the locking tongue 43 moves in a preset direction.

[0065] In this embodiment, the guide component can prevent the locking tongue 43 from rotating with the turntable 42 due to the lack of necessary constraints, which would cause the locking tongue 43 to interfere with the guide component, resulting in the locking tongue 43 getting stuck and unable to smoothly exit from the guide component.

[0066] The material of the guide component is not limited. In some embodiments, the guide component is made of 40Cr, 304 stainless steel, 45# steel, ductile iron, etc. In other embodiments, the guide component is made of hard plastics such as bakelite (phenolic plastic), carbon fiber reinforced polymer / plastic, ABS plastic (Acrylonitrile Butadiene Styreneplastic), etc.

[0067] In one embodiment, please refer to Figure 3 The rear of the first seat cushion 1 is provided with an interface 15 that is plugged into the base 2. When the interface 15 is plugged into the base 2, the seat is in the third state.

[0068] In this embodiment, the first cushion 1 can be removed separately and stacked on top of the second cushion 3, and connected to the base 2 through the interface 15.

[0069] The form of interface 15 is not limited and can be adjusted according to the plug-in method of base 2. In some embodiments, interface 15 is an alligator mouth structure to connect and fix with the ISOFIX (child safety seat fixing system) on base 2 to ensure the reliability of the connection.

[0070] A second aspect of this application provides an automobile, including a chassis, a driver's cab, and a seat according to any of the above embodiments. The seat is disposed in the driver's cab, and the chassis supports the driver's cab.

[0071] In this embodiment, the use of an adjustable-length seat that can function as a child seat improves the comfort of the car ride.

[0072] In one embodiment, the seat is located at the rear of the driver's cab.

[0073] In one embodiment, the first seat cushion 1 is located behind the driver's seat.

[0074] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A type of seat, characterized in that, Includes a base and a first seat cushion and a second seat cushion mounted on the base; It also includes an adjustment device, through which the first seat cushion can move relative to the second seat cushion to allow the seat to switch between a first state, a second state, and a third state; In the first state, the first seat cushion and the second seat cushion are arranged in the front-to-back direction at a first preset distance. In the second state, the first seat cushion and the second seat cushion are arranged in the front-to-back direction at a second preset distance, and the second preset distance is greater than the first preset distance. In the third state, the first seat cushion and the second seat cushion are arranged in the up-down direction. The adjustment device includes a first adjustment component and a second adjustment component. The first adjustment component is mounted on the first seat cushion, and the second adjustment component spans the first seat cushion and the base. The first seat cushion is adjusted relative to the second seat cushion in the front-to-back direction by the first adjustment component. The second adjustment component is used to switch the state of the first adjustment component so that the first adjustment component switches between a state that allows the first seat cushion to move out of the base and a state that prevents the first seat cushion from moving out of the base. When the first adjustment component is in the state that allows the first seat cushion to move out of the base, the first seat cushion is moved out of the base by operating the first adjustment component.

2. The seat according to claim 1, characterized in that, The first seat cushion has a slide, and the base includes: The base body has a receiving cavity formed on it; A slide rail is installed on the base body, and the slide rail is located on opposite sides of the receiving cavity along a preset direction. The slide table is movably disposed on the slide rail.

3. The seat according to claim 2, characterized in that, The second adjustment component includes a limiting block and an unlocking device. The unlocking device is disposed on the first seat cushion and is used to switch the state of the first adjustment component so that the projection area of ​​the first adjustment component in the front-back direction is offset from the projection area of ​​the limiting block in the front-back direction. The limiting block is connected to the slide rail. The first adjustment component includes a locking pin assembly. When the seat is in the first state or the second state, the slide is located between the limiting block and the second seat cushion in the front-back direction. The projection area of ​​the locking pin assembly in the front-back direction can at least partially overlap with the projection area of ​​the limiting block in the front-back direction to prevent the first seat cushion from disengaging from the slide rail.

4. The seat according to claim 3, characterized in that, The unlocking device includes an operating device, a turntable, and a locking tongue. The turntable is rotatably connected to the first seat cushion. The operating device is located on one side of the turntable, and a locking tongue is provided on the side of the turntable opposite to the operating device. The first adjustment component also includes a guide device with a groove formed on it. The locking tongue can move in the groove. Under the action of the operating device, the turntable rotates, causing the locking tongue to leave the groove. The guide device continues to move forward until the projection area of ​​the locking pin component in the front-back direction is misaligned with the projection area of ​​the limiting block in the front-back direction, so that the first seat cushion is moved out of the base.

5. The seat according to claim 4, characterized in that, The first seat cushion has a guide member, and the locking tongue is movably disposed within the guide member so that the locking tongue moves in a preset direction.

6. The seat according to claim 1, characterized in that, The base has a limiting hole, the first seat cushion has a first stop portion, and the first adjustment component includes: A guide device is movably disposed on the first seat cushion in a front-back direction. The guide device forms an installation cavity. The wall surface of the installation cavity along a preset direction is a guide surface. The preset direction is intersected with the front-back direction. The distance between the guide surface and the first stop part along the preset direction is a target distance. The target distance gradually increases from front to back. The limiting hole is located on at least one side of the guide device along the preset direction. A locking pin assembly is provided between the guide device and the limiting hole. The locking pin assembly has an abutment portion located in the mounting cavity at one end facing the guide surface. The abutment portion abuts against the side of the guide surface facing the mounting cavity. The locking pin assembly is movably mounted on the first seat cushion. The locking pin assembly has a protrusion. The reset member abuts against the protrusion and the first stop respectively, and the reset member is used to drive the locking pin assembly to move toward the limiting hole.

7. The seat according to claim 6, characterized in that, The first adjustment component further includes a reset device; the reset device includes a support column and an elastic element, the guide device is provided with the support column on one side along the forward direction of the first seat cushion, the elastic element is sleeved on the support column, the elastic element abuts against the guide device, the first seat cushion forms a second stop portion, the support column passes through the second stop portion, and the elastic element abuts against the rear side of the second stop portion.

8. The seat according to claim 1, characterized in that, The rear of the first seat cushion is provided with an interface for insertion into the base. When the interface is inserted into the base, the seat is in the third state.

9. A car, characterized in that, include: The chassis, the cab, and the seat according to any one of claims 1-8, wherein the seat is disposed in the cab, and the chassis is used to support the cab.

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