Unlocking device, seat and vehicle

Abstract

An unlocking device, a seat and a vehicle, the unlocking device comprises a first member, a second member and an unlocking member, the first member is used for unlocking or locking connection of a headrest and a backrest, the second member is used for unlocking or locking relative movement of the backrest and a seat cushion, and the unlocking member is configured to be capable of driving the second member to unlock when the first member is unlocked. And the backrest can move relative to the seat cushion. When the unlocking device is applied to the seat, the backrest can be unlocked while the headrest is unlocked, an unlocking structure of the backrest does not need to be independently arranged, the seat structure is simplified, and the number of parts is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of unlocking devices, and in particular to an unlocking device, a seat and a vehicle. Background Art

[0002] Seats are an important part of the vehicle interior for passengers to sit in. For the rear seats of the vehicle, the headrests of the rear seats are located on the top of the backrests. In order to meet the legal requirements for the height of the headrests, the installation height of the headrests in the vehicle is relatively constant. When the rear seats are flipped forward, the headrests are likely to interfere with the front seats. The headrests need to be removed from the backrests to fold the backrests to be parallel to the seat cushions.

[0003] In the prior art, the backrest and headrest of the rear seat of the vehicle need to be respectively provided with unlocking buttons for unlocking, resulting in a complex unlocking structure of the seat and a large number of parts. Summary of the invention

[0004] The purpose of the present application is to provide an unlocking device, a seat and a vehicle to solve the problem that the unlocking device has a complex structure and many parts.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides an unlocking device, which is applicable to a seat, wherein the seat comprises a backrest and a seat cushion that are relatively movable, and a headrest and a backrest that are detachably connected, and the unlocking device comprises:

[0007] A first member, the first member is used to unlock or lock the connection between the headrest and the backrest;

[0008] A second member, the second member is used to unlock or lock the relative movement of the backrest and the seat cushion;

[0009] The unlocking component is configured to drive the second component to unlock when the first component is unlocked, so that the backrest can move relative to the seat cushion.

[0010] In one embodiment, the unlocking member is constructed such that when the first member is locked, the first member cooperates with the unlocking member to lock the unlocking member, and the locking of the unlocking member can drive the locking of the second member to limit the relative movement between the backrest and the seat cushion.

[0011] In one embodiment, the unlocking member is movably disposed on the backrest, and the unlocking member can be moved and switched between a first position and a second position;

[0012] The unlocking member is connected to the second member. When the unlocking member moves from the first position to the second position, the unlocking member drives the second member to unlock, so that the backrest and the seat cushion can move relative to each other.

[0013] In one embodiment, the first member can lock the second member by restricting the unlocking member in the first position, so as to restrict the relative movement between the backrest and the seat cushion.

[0014] In one embodiment, the unlocking component includes a mounting seat and an unlocking piece, the mounting seat is fixed to the backrest, and the unlocking piece is movably arranged on the mounting seat.

[0015] In one embodiment, the mounting seat is provided with a first groove, and the unlocking member is provided with a first component, and the first component is slidably connected to the first groove.

[0016] In one embodiment, the mounting seat includes a limiting member, and the unlocking member includes a mounting member. The limiting member cooperates with the mounting member to limit the movement range of the unlocking member.

[0017] In one embodiment, the unlocking member further includes a first elastic member, the first elastic member is connected between the mounting seat and the unlocking member, and the first elastic member is suitable for providing a rebound force for the unlocking member.

[0018] In one embodiment, the unlocking member includes a second component, the mounting seat includes a limiting protrusion, and one end of the first elastic member is connected to the second component, and the other end is connected to the limiting protrusion.

[0019] In one embodiment, the first component includes a connecting member, and the connecting member is disposed on the headrest of the seat, and the connecting member can abut against the unlocking member to lock the unlocking member.

[0020] In one embodiment, the first component further includes a locking component, the locking component is fixed to the mounting seat, the connecting member includes a second groove, the locking component is provided with a locking portion, and the locking portion is suitable for engaging with the second groove.

[0021] In one embodiment, the connecting member is detachably connected to the mounting seat.

[0022] In one embodiment, the first component further comprises a guide sleeve and a second elastic member, and the guide sleeve is fixed to the mounting seat;

[0023] The locking component is movably arranged on the guide sleeve, one end of the second elastic member abuts against the locking component, and the other end of the second elastic member abuts against the guide sleeve.

[0024] In one embodiment, a first clamping block is provided on the outer wall of the guide sleeve, and a slot is provided on the mounting seat, and the first clamping block is plugged into the slot.

[0025] In one embodiment, a first card slot is provided on the slot wall of the slot, and the first card block is connected to the first card slot.

[0026] In one embodiment, a second clamping block is provided on the end of the mounting seat, and the second clamping block is suitable for clamping with the backrest.

[0027] In one embodiment, the unlocking member is provided with a guide platform, and the guide platform is used to provide guidance for the movement of the connecting member.

[0028] In one embodiment, the second component includes a locking mechanism and a cable, one end of the cable is connected to the locking mechanism, and the other end of the cable is connected to the unlocking member.

[0029] In one embodiment, a limiting guide rail is provided on the mounting seat, and the cable portion is provided on the limiting guide rail.

[0030] In a second aspect, the present application further provides a seat, comprising the unlocking device according to the first aspect, and also comprising a driving mechanism, wherein the driving mechanism controls the movement of the seat cushion and the backrest.

[0031] In a third aspect, the present application further provides a vehicle, comprising the unlocking device according to the first aspect or the seat according to the second aspect.

[0032] In the present application, the unlocking device includes a first component, a second component and an unlocking component. When the unlocking device is applied to a seat, the first component is used to unlock or lock the connection between the headrest and the backrest, and the second component is used to unlock or lock the relative movement of the backrest and the seat cushion. The unlocking component is constructed so that when the first component is unlocked, it can drive the second component to unlock, so that the backrest can move relative to the seat cushion, that is, the backrest can be unlocked while the headrest is unlocked, and there is no need to set up a separate unlocking structure for the backrest, which simplifies the unlocking structure of the seat and reduces the number of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of a seat according to an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a headrest and an unlocking device according to another embodiment of the present application;

[0036] Figure 3 A partial structural schematic diagram of an unlocking device according to an embodiment of the present application;

[0037] Figure 4 This is a schematic structural diagram of a mounting base according to an embodiment of the present application;

[0038] Figure 5 This is a schematic diagram of the structure of an unlocking member according to an embodiment of the present application;

[0039] Figure 6 for Figure 5 A structural diagram from another perspective;

[0040] Figure 7 This is a schematic structural diagram of a headrest and a first component according to an embodiment of the present application;

[0041] Figure 8 for Figure 3 Exploded diagram.

[0042] Description of reference numerals:

[0043] 100, seat cushion; 200, backrest; 300, headrest; 400, first component; 410, connecting member; 411, second groove; 412, ball head; 420, locking member; 421, locking part; 430, guide sleeve; 431, first clamping block; 432, convex rib; 440, second elastic member; 500, second component; 510, locking mechanism; 520, cable; 600, unlocking member; 610, mounting seat; 611, first groove; 612, limiting member; 613, limiting protrusion; 614, slot; 614a, clamping slot; 615, second clamping block; 616, limiting guide rail; 620, unlocking member; 621, first component; 622, mounting member; 623, second component; 624, guide platform; 624a, guiding inclined surface; 630, first elastic member. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0047] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0048] refer to Figure 1 The present application provides a vehicle, the vehicle includes a frame and a seat, and the seat is connected to the frame. The seat is an important part of the vehicle interior and can be used by passengers. The vehicle includes front seats and rear seats, and a trunk is arranged behind the rear seats. The front seats are for the driver and the co-driver to sit. The rear seats of the vehicle include a seat cushion 100, a backrest 200 and a headrest 300. By folding down the backrest 200 of the rear seat, it is convenient to place more items in the vehicle. The rear seat of the vehicle also includes a driving mechanism, which controls the movement of the seat cushion 100 and the backrest 200 to adjust the angle of the backrest 200.

[0049] In the prior art, when the rear seat of a vehicle is folded down, it is first necessary to unlock the locking mechanism of the backrest by depressing the unlocking button or pulling the unlocking strap. When the headrest of the rear seat interferes with the front seat, the headrest needs to be removed from the backrest. Therefore, the backrest and headrest of the rear seat of the vehicle need to be respectively provided with unlocking devices to unlock, resulting in a complex overall structure of the seat and a large number of parts.

[0050] refer to Figure 1 and Figure 2The present application provides an unlocking device, which includes a first component 400, a second component 500 and an unlocking component 600. The first component 400 is used to unlock or lock the connection between the headrest 300 and the backrest 200, and the second component 500 is used to unlock or lock the relative movement of the backrest 200 and the seat cushion 100. The unlocking component 600 is configured to drive the second component 500 to unlock when the first component 400 is unlocked, so that the backrest 200 can move relative to the seat cushion 100. When the unlocking device provided in the present application is applied to a seat, the backrest 200 can be unlocked while the headrest 300 is unlocked, and there is no need to set a separate unlocking structure for the backrest 200, which simplifies the seat structure and reduces the number of components.

[0051] The unlocking member 600 is configured such that when the first member 400 is locked, the first member 400 cooperates with the unlocking member 600 to lock the unlocking member 600, and the locking of the unlocking member 600 can drive the locking of the second member 500 to limit the relative movement between the backrest 200 and the seat cushion 100. When the headrest 300 is locked, the backrest 200 can be locked, and the seat backrest 200 can be locked. That is, the unlocking device provided in the present application can realize the unlocking and locking linkage between the headrest 300 and the backrest 200 of the seat, so as to simplify the unlocking and locking structure of the seat and further reduce the number of components.

[0052] It should be noted that the unlocking device provided in the present application is described by taking the application to the seat of a vehicle as an example. In other embodiments, the unlocking device can also be applied to other equipment or other parts of the vehicle without specific limitation.

[0053] In the unlocking device provided in the present application, the unlocking member 600 is movably arranged on the backrest 200, and the unlocking member 600 can be moved and switched between the first position and the second position; the unlocking member 600 is connected to the second member 500, and when the unlocking member 600 moves from the first position to the second position, the unlocking member 600 drives the second member 500 to unlock, so that the backrest 200 and the seat cushion 100 can move relative to each other. By moving the unlocking member 600, the second member 500 is driven to unlock and lock, thereby realizing the unlocking and locking of the backrest 200 and the seat cushion 100. The first member 400 can limit the relative movement of the backrest 200 and the seat cushion 100 by limiting the unlocking member 600 to the first position so that the second member 500 is locked, thereby limiting the relative movement of the backrest 200 and the seat cushion 100, thereby realizing the unlocking and locking linkage between the headrest 300, the backrest 200 and the seat cushion 100.

[0054] By means of the unlocking device provided by the present application, when the backrest 200 of the seat needs to be laid down, the backrest 200 can be unlocked by simply removing the headrest 300, thereby simplifying the operation steps. The backrest 200 can be rotated only after the headrest 300 is removed, thereby avoiding the interference between the headrest 300 and the front seat and causing damage to the headrest 300.

[0055] The unlocking member 600 includes a mounting seat 610, an unlocking member 620 and a first elastic member 630. The mounting seat 610 is fixed to the backrest 200. The unlocking member 620 is movably arranged on the mounting seat 610. The first elastic member 630 is connected between the mounting seat 610 and the unlocking member 620. The first elastic member 630 is suitable for providing a rebound force for the unlocking member 620. When the first member 400 restricts the unlocking member 600 to the first position, the unlocking member 600 contacts the unlocking member 620, and the first elastic member 630 is in a stretched or compressed state; when the first member 400 is unlocked, the first member 400 is separated from the unlocking member 620, and the first elastic member 630 is reset, so that the unlocking member 620 moves from the first position to the second position, so as to drive the second member 500 to unlock. Specifically, when the first elastic member 630 is in a stretched or compressed state, the unlocking member 620 is in the first position; when the first elastic member 630 is reset, the unlocking member 620 is in the second position. The first member 400 abuts against the unlocking member 620, so that the first elastic member 630 is in a stretched or compressed state, that is, the unlocking member 620 abuts against the first member 400 under the action of the first elastic member 630, and the first member 400 limits the unlocking member 620 to the first position, at which time the unlocking member 600 is locked and the second member 500 is locked; when the first member 400 is separated from the unlocking member 620, the first elastic member 630 is reset, and the unlocking member 620 moves under the elastic force of the first elastic member 630, thereby driving the second member 500 to unlock, and releasing the restriction on the relative rotation of the backrest 200 and the seat cushion 100. The first elastic member 630 can be a tension spring or a compression spring.

[0056] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The mounting seat 610 is provided with a first groove 611, and the unlocking member 620 is provided with a first component 621, and the first component 621 is slidably connected to the first groove 611. Specifically, the first groove 611 extends along the first direction X, and the first component 621 is slidably arranged in the first groove 611 to improve the stability of the unlocking member 620 when it moves. And the length of the first component 621 in the first direction X is less than the length of the first groove 611 in the first direction X, so that the first component 621 can slide in the first groove 611 and limit the movement distance of the slider. Among them, the unlocking member 620 can move between a first position and a second position, and the first position and the second position are two positions in the first direction X. For example, the first position and the second position can be the positions where the first component 621 moves to the two ends of the first groove 611 in the first direction X.

[0057] The mounting seat 610 includes a limiting member 612, and the unlocking member 620 includes a mounting member 622. The limiting member 612 and the mounting member 622 are limitedly matched to limit the movement range of the unlocking member 620. Specifically, the limiting member 612 on the mounting seat 610 can be a hook, and the unlocking member 620 is clamped on the mounting seat 610 through the mounting member 622 to facilitate the installation of the unlocking member 620. The limiting member 612 and the mounting member 622 are limitedly matched to limit the movement range of the unlocking member 620 in the second direction Y, so that the unlocking member 620 can move only in the first direction X as much as possible, and the first direction X is different from the second direction Y.

[0058] A second clamping block 615 is provided on the end of the mounting seat 610 , and the second clamping block 615 is suitable for clamping with the backrest 200 to facilitate the overall installation of the unlocking member 600 , making the unlocking device modular and meeting different installation requirements of the backrest 200 .

[0059] In one embodiment, the unlocking member 620 includes a second member 623, the mounting seat 610 includes a limiting protrusion 613, and one end of the first elastic member 630 is connected to the second member 623, and the other end is connected to the limiting protrusion 613. In the present application, the first elastic member 630 is a tension spring, the limiting protrusion 613 and the second member 623 are spaced apart in the first direction X, and the two ends of the first elastic member 630 are respectively connected to the limiting protrusion 613 and the second member 623, so that the first elastic member 630 extends along the first direction X, so that the unlocking member 620 can move in the first direction X.

[0060] refer to Figure 2 , Figure 7 and Figure 8 In the unlocking device provided in the present application, the first component 400 includes a connecting member 410, a locking member 420, a guide sleeve 430 and a second elastic member 440. The connecting member 410 is arranged on the headrest 300 of the seat, and the connecting member 410 can abut against the unlocking member 620 to lock the unlocking member 620. The locking member 420 is fixed to the mounting seat 610, the connecting member 410 includes a second groove 411, and the locking member 420 is provided with a locking portion 421, and the locking portion 421 is suitable for engaging with the second groove 411. The guide sleeve 430 is fixed to the mounting seat 610, the locking member 420 is movably arranged on the guide sleeve 430, one end of the second elastic member 440 abuts against the locking member 420, and the other end of the second elastic member 440 abuts against the guide sleeve 430. Specifically, the connecting member 410 is a rod of the headrest 300 , and the connecting member 410 is fixed to the headrest 300 of the seat. The connecting member 410 is detachably connected to the mounting seat 610 to achieve installation and removal of the headrest 300 .

[0061] When the headrest 300 is installed on the backrest 200 and the connecting member 410 abuts against the unlocking member 620, the connecting member 410 restricts the unlocking member 620 to the first position; when the headrest 300 is removed from the backrest 200, the connecting member 410 separates from the unlocking member 620, and the unlocking member 620 moves from the first position to the second position to drive the second member 500 to unlock, so that the backrest 200 and the seat cushion 100 can rotate relative to each other. That is, the locking and unlocking of the seat backrest 200 are achieved by inserting and removing the headrest 300, without the need to separately set up an unlocking member for the backrest 200, thereby simplifying the overall structure of the seat and reducing the number of components.

[0062] In one embodiment, the outer wall of the guide sleeve 430 is provided with a first clamping block 431, and the mounting seat 610 is provided with a slot 614, and the first clamping block 431 is inserted into the slot 614, that is, the guide sleeve 430 and the mounting seat 610 are matched through the slot 614 and the first clamping block 431. The connecting member 410 is inserted into the guide sleeve 430, and the connecting member 410 enters the mounting seat 610 through the slot 614 to match with the unlocking member 620.

[0063] A slot 614a is provided on the wall of the slot 614, and the first clamping block 431 is clamped in the slot 614a, that is, the guide sleeve 430 is clamped on the mounting seat 610 through the cooperation between the first clamping block 431 and the slot 614a, so as to facilitate the disassembly and assembly of the guide sleeve 430. A convex rib 432 is provided on the outer wall of the guide sleeve 430, and the convex rib 432 abuts against the inner wall of the slot 614, so as to improve the stability of the guide sleeve 430 installed on the mounting seat 610.

[0064] The locking component 420 is movably arranged on the guide sleeve 430, the locking portion 421 is arranged along the circumference of the slot 614, one end of the second elastic member 440 abuts against the locking portion 421, and the other end of the second elastic member 440 abuts against the guide sleeve 430; when the connecting member 410 is inserted into the slot 614, the connecting member 410 is inserted into the guide sleeve 430 and the locking portion 421, and the locking portion 421 is locked in the second groove 411. Specifically, by providing the second groove 411 that cooperates with the locking portion 421 on the connecting member 410, the connecting member 410 can be locked on the mounting seat 610 after being inserted into the slot 614, so as to fix the headrest 300. In the present application, the second elastic member 440 is a compression spring, and the locking portion 421 can be locked in the second groove 411 through the cooperation between the second elastic member 440 and the locking component 420. When the connecting member 410 needs to be removed from the mounting seat 610 , it is only necessary to press the locking component 420 , which is convenient to operate.

[0065] When the unlocking device provided in the present application is applied to a vehicle seat, two connectors 410 are provided, both of which are provided on the headrest 300, and two guide sleeves 430 are provided, and the two connectors 410 are respectively inserted into the two guide sleeves 430. The unlocking component can be unlocked on one or both guide sleeves 430 to achieve locking and unlocking of the headrest 300.

[0066] The unlocking member 620 is provided with a guide platform 624, which is used to provide guidance for the movement of the connecting member 410. Specifically, the guide platform 624 has a guide slope 624a, which is inclined from an end close to the slot 614 to an end away from the slot 614 in the first direction X, so that the connecting member 410 can move along the guide slope 624a until it abuts against one end of the unlocking member 620, so that the unlocking member 620 is displaced in the first direction X.

[0067] Optionally, a ball head 412 is provided at the end of the connecting member 410 , and the connecting member 410 abuts against the guiding inclined surface 624 a through the arc surface of the ball head 412 , so that the connecting member 410 slides smoothly along the guiding inclined surface 624 a .

[0068] The second member 500 includes a locking mechanism 510 and a cable 520, one end of the cable 520 is connected to the locking mechanism 510, and the other end of the cable 520 is connected to the unlocking member 620. By arranging the locking mechanism 510 between the seat cushion 100 and the backrest 200, the backrest 200 can be locked to provide back support for the passenger. When the headrest 300 is connected to the backrest 200, it provides head support for the passenger and improves the safety of the passenger. When the backrest 200 needs to be laid down or the backrest 200 and the seat cushion 100 are folded, the headrest 300 is removed from the backrest 200 to separate the headrest 300 from the backrest 200. At this time, the unlocking member 620 moves to drive the locking mechanism 510 to unlock, thereby unlocking the backrest 200. That is, the seat provided in the present application realizes the unlocking of the backrest 200 through its own headrest 300, and there is no need to set the unlocking component of the backrest 200 separately.

[0069] In the unlocking device provided in the present application, a limiting guide rail 616 is provided on the mounting seat 610, and a portion of the cable 520 is provided on the limiting guide rail 616. The unlocking device further includes the cable 520, the limiting guide rail 616 and the limiting protrusion 613 are arranged at intervals, and the unlocking member 620 abuts against the limiting guide rail 616 to further improve the stability of the unlocking member 620 when moving; one end of the cable 520 is connected to the locking mechanism 510, and the other end of the cable 520 passes through the limiting guide rail 616 and is connected to the unlocking member 620. Specifically, the unlocking member 620 and the locking mechanism 510 are connected by the cable 520 to achieve power transmission over a long distance; and the unlocking member 620 can pull the locking mechanism 510 through the elastic force of the first elastic member 630 to unlock the locking mechanism 510.

[0070] The locking mechanism 510 may be disposed on the seat cushion 100, or the locking mechanism 510 may be disposed on the backrest 200, or the locking mechanism 510 may be disposed at the connection position between the seat cushion 100 and the backrest 200. The cable 520 may unlock the backrest 200 alone, or a plurality of cables 520 may be disposed, and the plurality of cables 520 may simultaneously unlock the seat cushion 100 and the backrest 200, so that after the locking mechanism 510 is unlocked, the backrest 200 and the seat cushion 100 may be relatively rotated for folding.

[0071] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0072] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An unlocking device, suitable for a seat, the seat comprising a backrest and a seat cushion that are relatively movable, and a headrest and a backrest that are detachably connected, characterized in that: The unlocking device comprises: A first member, the first member is used to unlock or lock the connection between the headrest and the backrest; A second member, the second member is used to unlock or lock the relative movement of the backrest and the seat cushion; The unlocking component is configured to drive the second component to unlock when the first component is unlocked, so that the backrest can move relative to the seat cushion.

2. The unlocking device according to claim 1, characterized in that: The unlocking member is configured such that when the first member is locked, the first member cooperates with the unlocking member to lock the unlocking member, and the locking of the unlocking member can drive the locking of the second member to limit the relative movement between the backrest and the seat cushion.

3. The unlocking device according to claim 1, characterized in that: The unlocking member is movably arranged on the backrest, and the unlocking member can be moved and switched between a first position and a second position; The unlocking member is connected to the second member. When the unlocking member moves from the first position to the second position, the unlocking member drives the second member to unlock, so that the backrest and the seat cushion can move relative to each other.

4. The unlocking device according to claim 3, characterized in that: The first member can lock the second member by restricting the unlocking member in the first position, so as to restrict the relative movement between the backrest and the seat cushion.

5. The unlocking device according to claim 1, characterized in that: The unlocking component comprises a mounting seat and an unlocking piece, wherein the mounting seat is fixed to the backrest, and the unlocking piece is movably arranged on the mounting seat.

6. The unlocking device according to claim 5, characterized in that: The mounting seat is provided with a first groove, and the unlocking member is provided with a first component, and the first component is slidably connected with the first groove.

7. The unlocking device according to claim 5, characterized in that: The mounting seat includes a limiting member, and the unlocking member includes a mounting member. The limiting member and the mounting member are limitedly matched to limit the movement range of the unlocking member.

8. The unlocking device according to claim 5, characterized in that: The unlocking member further comprises a first elastic member, wherein the first elastic member is connected between the mounting seat and the unlocking member, and the first elastic member is suitable for providing a rebound force for the unlocking member.

9. The unlocking device according to claim 8, characterized in that: The unlocking member includes a second component, the mounting seat includes a limiting protrusion, and one end of the first elastic member is connected to the second component, and the other end is connected to the limiting protrusion.

10. The unlocking device according to claim 5, characterized in that: The first component includes a connecting member, which is arranged on the headrest of the seat, and the connecting member can abut against the unlocking member to lock the unlocking member.

11. The unlocking device according to claim 10, characterized in that: The first component further includes a locking component, the locking component is fixed to the mounting seat, the connecting member includes a second groove, the locking component is provided with a locking portion, and the locking portion is suitable for engaging with the second groove.

12. The unlocking device according to claim 11, characterized in that: The connecting member is detachably connected to the mounting seat.

13. The unlocking device according to claim 11, characterized in that: The first component further comprises a guide sleeve and a second elastic member, and the guide sleeve is fixed to the mounting seat; The locking component is movably arranged on the guide sleeve, one end of the second elastic member abuts against the locking component, and the other end of the second elastic member abuts against the guide sleeve.

14. The unlocking device according to claim 13, characterized in that: A first clamping block is provided on the outer wall of the guide sleeve, and a slot is provided on the mounting seat, and the first clamping block is plugged into the slot.

15. The unlocking device according to claim 14, characterized in that: A card slot is provided on the slot wall of the slot, and the first card block is carded in the card slot.

16. The unlocking device according to claim 5, characterized in that: A second clamping block is provided on the end of the mounting seat, and the second clamping block is suitable for clamping with the backrest.

17. The unlocking device according to claim 10, characterized in that: The unlocking member is provided with a guide platform, and the guide platform is used to provide guidance for the movement of the connecting member.

18. The unlocking device according to claim 5, characterized in that: The second component includes a locking mechanism and a cable, one end of the cable is connected to the locking mechanism, and the other end of the cable is connected to the unlocking member.

19. The unlocking device according to claim 18, characterized in that: The mounting seat is provided with a limiting guide rail, and the cable part is arranged on the limiting guide rail.

20. A seat, characterized in that: It comprises the unlocking device according to any one of claims 1 to 19, and also comprises a driving mechanism, wherein the driving mechanism controls the movement of the seat cushion and the backrest.

21. A vehicle, characterized in that: Comprising the unlocking device according to any one of claims 1-19 or the seat according to claim 20.

Images