Adjustment assembly, seat and method for a seat

Abstract

The application provides an adjusting assembly, a seat and a method for operating the seat. The adjusting assembly comprises a base frame for being fixed to an external object; a seat cushion frame rotatably connected to the base frame at one side in a length direction and connected to the base frame at the other side in the length direction through a reclining adjusting linkage assembly; the reclining adjusting linkage assembly comprises a front upper linkage assembly comprising a first front upper linkage, a second front upper linkage and a releasable connecting member, the first front upper linkage is rotatably connected to the seat cushion frame at a first position, rotatably connected to the second front upper linkage at a second position and connected to the second front upper linkage through the releasable connecting member at a third position; a transmission part connected to the second front upper linkage at one side and connected to a driving part at the other side, and transmitting the movement output by the driving part to the second front upper linkage.

Description

Technical Field

[0001] This application relates to adjustment components, seats, and methods of operating the seats. Background Technology

[0002] Car seats generally include a backrest and a seat cushion. With the development of car user needs, in order to provide passengers with a comfortable riding experience, the seat cushion can be designed to be adjustable in tilt angle, so that passengers can adjust it according to their needs, such as realizing the function of a zero-gravity seat.

[0003] However, when occupants use the zero-gravity mode of a zero-gravity seat to rest or lie down, the tilted posture poses a safety risk in the event of a collision. For example, the impact force could cause the occupant to slide under the seatbelt, making it difficult for the airbags to provide adequate protection. Therefore, zero-gravity seats need to be able to quickly adjust and return to a non-zero-gravity position during a collision to provide better safety protection for occupants.

[0004] The inventors discovered that the existing adjustment components that enable quick adjustment need to be further simplified in structure to better adapt to the interior space of the seat. Summary of the Invention

[0005] The purpose of this application is to provide an adjustment component.

[0006] Another objective of this application is to provide a seat.

[0007] Another object of this application is to provide a method for operating a seat.

[0008] An adjustment assembly according to a first aspect of this application includes: a base frame for fixing to an external surface; a seat frame rotatably connected to the base frame on one side in the length direction and connected to the base frame on the other side in the length direction via a tilt adjustment linkage assembly; the tilt adjustment linkage assembly includes: a front upper linkage assembly including a first front upper linkage, a second front upper linkage, and a releasable connector, wherein the first front upper linkage is rotatably directly connected to the seat frame in a first position, rotatably connected to the second front upper linkage in a second position, and connected to the second front upper linkage via the releasable connector in a third position; a transmission unit connected to the second front upper linkage on one side and to a drive unit on the other side, transmitting the motion output by the drive unit to the second front upper linkage; the adjustment assembly has a first state and a second state: in the first state, the first front upper linkage and the second front upper linkage move synchronously through the connection of the releasable connector; in the second state, the releasable connector is released, the first front upper linkage and the second front upper linkage are desynchronized, allowing the first front upper linkage to rotate relative to the second front upper linkage.

[0009] In one or more embodiments of the adjustment assembly, the transmission unit includes a lower front connecting rod, which is rotatably and directly connected to the base frame and the second upper front connecting rod; an inclined connecting rod and a lower front tube; wherein the inclined connecting rod and the lower front tube are fixed relative to each other, the inclined connecting rod is fixed to the lower front tube at a fourth position and connected to the drive unit at a fifth position, and the lower front connecting rod is fixedly connected to the lower front tube; or the transmission unit includes a pivot, which is disposed on the second upper front connecting rod or the lower front connecting rod and connected to the drive unit, so that the motion output by the drive unit is directly transmitted to the second upper front connecting rod or directly transmitted to the lower front connecting rod.

[0010] In one or more embodiments of the adjustment assembly, the releasable connector includes an explosion bolt, through which the first front upper link is fixedly connected to the second front upper link in a third position; or the releasable connector includes an elastic component, including an actuator and an elastic element, wherein in a first state, the elastic element is constrained such that the first front upper link and the second front upper link are relatively fixed and move synchronously; in a second state, the actuator is actuated to release the constraint of the elastic element, thereby releasing the fixation of the first front upper link and the second front upper link, and causing the first front upper link and the second front upper link to desynchronize.

[0011] In one or more embodiments of the adjustment assembly, the elastic assembly further includes a pin connected at one end to the actuator and at the other end to the elastic assembly.

[0012] In one or more embodiments of the adjustment assembly, it further includes: a cable connected at one end to the base frame and at the other end to the seat frame; the length of the cable between the two ends is variable.

[0013] In one or more embodiments of the adjustment assembly, a pretensioner is further included, the pretensioner being connected to one end of the cable member. In the first state, the seat frame is lifted relative to the base frame on the other side in the longitudinal direction via a tilt adjustment linkage assembly, and the length of the cable member housed within the pretensioner is pulled out from inside the pretensioner. In the second state, the length of the cable member is retracted into the pretensioner.

[0014] In one or more embodiments of the adjustment assembly, the drive unit includes a motor and a lead screw, the motor driving the lead screw to drive a transmission unit rotatably connected to the lead screw.

[0015] A seat according to a second aspect of this application includes a seat cushion, including an adjustment assembly as described in the first aspect; and a backrest rotatably connected to the seat cushion.

[0016] In one or more embodiments of the seat, the seat is a zero-gravity seat; in the first state, the seat is in a zero-gravity mode; and in the second state, the seat is in a collision accident mode.

[0017] According to a third aspect of this application, a method for operating a seat is adopted, using the seat as described in the second aspect. The method includes: in a first state, a driving force provided by a drive unit drives the first front upper link and the second front upper link to move synchronously, and the driving force drives the first front upper link to overcome the weight of the occupant of the seat, thereby driving the height of the seat cushion frame on the other side in the length direction to a zero-gravity position.

[0018] In the second state, the releasable connector is released, the first front upper link and the second front upper link are desynchronized, allowing the first front upper link to rotate relative to the second front upper link. The first front upper link loses the driving force, and the first front upper link is subjected to the weight of the occupant of the seat, causing the height of the seat cushion frame on the other side of the length direction to rise and fall from the zero gravity position to the design position.

[0019] The beneficial effects of this application include, but are not limited to, by setting separate first and second front upper links in the front upper link assembly, and connecting the two through a releasable connector, the separation of the front upper links during the collision phase can achieve the return from the zero-gravity position, realizing the zero-gravity and return functions through a simple structure. In particular, the transmission part can be set as needed to have an inclined link assembly or be directly connected through a shaft, which can be adjusted according to different spatial arrangement requirements, thus making it easier to adapt to the spatial arrangement inside the seat. Attached Figure Description

[0020] The above and other features, properties, and advantages of this application will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features. It should be noted that these drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the scope of protection actually claimed by this application, wherein:

[0021] Figure 1 This is a structural schematic diagram of a seat according to one or more embodiments.

[0022] Figures 2 to 5 This is a schematic diagram of the structure of the adjustment component at different angles in the first embodiment.

[0023] Figures 6 to 8 This is a schematic diagram of the structure of the adjustment component in the first embodiment at its initial position in the first state.

[0024] Figures 9 to 11 This is a schematic diagram of the adjustment component in the first embodiment at the zero-gravity position in the first state.

[0025] Figures 12 to 14 This is a schematic diagram of the adjustment component in the first embodiment at the return position in the first state.

[0026] Figures 15 to 18 This is a schematic diagram of the adjustment component at different angles in the second embodiment.

[0027] Figures 19 to 21 This is a schematic diagram of the structure of the adjustment component in the first state of the second embodiment.

[0028] Figures 22 to 24 This is a schematic diagram of the adjustment component in the first state of zero gravity position, as shown in the second embodiment.

[0029] Figures 25 to 27 This is a schematic diagram of the adjustment component in the first state of zero gravity position, as shown in the second embodiment.

[0030] Figure 28 This is a schematic diagram illustrating the motion principle of the adjustment components in the first and second embodiments.

[0031] Figure 29 This is a schematic diagram of the motion principle of the adjustment component in the third embodiment.

[0032] Figure 30 This is a flowchart illustrating the operation method of a seat according to one embodiment.

[0033] Figure label:

[0034] 1000-seat

[0035] 1001-Seat Cushion

[0036] 1002-Backrest

[0037] 10-Adjustment Components

[0038] 101 - First State

[0039] 102 - Second State

[0040] 1-Base Frame

[0041] 2-Seat Cushion Frame

[0042] 31-Front Upper Linkage Assembly

[0043] 311-First Front Upper Linkage

[0044] 312-Second Front Upper Linkage

[0045] 313 - Releasable connector

[0046] 3131-Explosion Bolt

[0047] 3132-Elastic Component

[0048] 31321-Actuator

[0049] 31322-Elastic Component

[0050] 31323 - Pin Parts

[0051] 3133 - Sensing Element

[0052] 32-Front Lower Link

[0053] 33-Transmission Unit

[0054] 331-Tilt Link

[0055] 332-Front Lower Tube

[0056] 333-Pivot

[0057] 4-Drive Unit

[0058] 41-Motor

[0059] 42-lead screw

[0060] 5-Cable component

[0061] 6-Pretensioner. Detailed Implementation

[0062] Reference will now be made in detail to various embodiments of this application, examples of which are shown in the accompanying drawings and described below. Although this application will be described in conjunction with exemplary embodiments, it should be understood that this application is not intended to be limited to those exemplary embodiments. Rather, this application is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of this application as defined by the appended claims.

[0063] This application uses specific terms to describe embodiments of the application. For example, "an embodiment" and / or "one embodiment" refers to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment" or "one embodiment" mentioned twice or more in different locations in this application does not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0064] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0065] In the description of the embodiments in this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," and "vertical" are used.

[0066] The terms "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application. This application uses flowcharts to illustrate the operations performed according to the embodiments of this application. It can be understood that, depending on the actual situation, the steps in the drawings are not necessarily performed sequentially, and other operations can be added to these processes, or one or more steps can be removed from these processes.

[0067] This application uses flowcharts to illustrate the operations performed according to embodiments of this application. It is understood that, depending on the actual situation, the steps shown in the diagrams may not necessarily be performed sequentially, and other operations may be added to these processes, or one or more steps may be removed from these processes.

[0068] Although the adjustment components disclosed in this application are applicable to car seats to improve the safety of zero-gravity seats used in automobiles, they are not limited thereto. For example, they can be applied to other transportation applications, such as heavy vehicles, railway trains, and ships, as well as fixed locations, such as meeting rooms, auditoriums, cinemas, and massage chairs. As long as the seat has the function of a zero-gravity seat, the adjustment components and adjustment methods described in this application can be applied.

[0069] refer to Figure 1 As shown, in some embodiments, the seat 1000 may include a seat cushion 1001 and a backrest 1002, which are rotatably connected, for example, by means of a recliner. The seat cushion 1001 may include the adjustment assembly 10, which will be described in detail in the following embodiments, to adjust the occupant's reclining posture to achieve the function of a zero-gravity seat.

[0070] refer to Figures 2 to 27As shown, in some embodiments, the adjustment assembly 10 includes a base frame 1, a seat cushion frame 2, and a tilt adjustment linkage assembly.

[0071] The base frame 1 is used for fixing to the outside, such as fixing to an external slide rail or bottom surface, and adjusting the base of the component 10.

[0072] The seat cushion frame 2 can house the seat cushion foam and covering material in the actual seat, thus providing the frame structure for the seat cushion. The seat cushion frame 2 is rotatably connected to the base frame 1 on one side along its length, and connected to the base frame 1 on the other side along its length via a tilt adjustment linkage assembly. The rotatable connection between the seat cushion frame 2 and the base frame 1 can be a direct rotatable connection as shown in the figure, or an indirect rotatable connection via a linkage assembly or other structure, such as an indirect connection through a height adjustment mechanism; neither is limited to this method.

[0073] The tilt adjustment linkage assembly includes a front upper linkage assembly 31 and a transmission unit 33. The front upper linkage assembly 31 includes a first front upper linkage 311, a second front upper linkage 312, and a releasable connector 313. The first front upper linkage 311 is rotatably directly connected to the seat cushion frame 2 in a first position, rotatably connected to the second front upper linkage 312 in a second position, and connected to the second front upper linkage 312 via the releasable connector 313 in a third position. The transmission unit 33 is connected to the second front upper linkage 312 on one side and to the drive unit 4 on the other side, transmitting the motion output from the drive unit 4 to the second front upper linkage 312.

[0074] In some embodiments, the structure of the drive unit 4 that drives the tilting linkage assembly may include a motor 41 and a lead screw 42, wherein the motor 41 drives the lead screw 42 to drive the transmission unit 33 that is rotatably connected to the lead screw 42.

[0075] refer to Figures 2 to 28 As shown, in some embodiments, the transmission part 33 may include a front lower connecting rod 32, which is rotatably and directly connected to the base frame 1 and the second front upper connecting rod 312; an inclined connecting rod 331 and a front lower tube 332; wherein the inclined connecting rod 331 and the front lower tube 332 are fixed relative to each other, the inclined connecting rod 331 is fixed to the front lower tube 332 at the fourth position and connected to the drive part 4 at the fifth position, and the front lower connecting rod 32 is fixedly connected to the front lower tube 332.

[0076] refer to Figure 29 As shown, different Figures 2 to 28 The transmission unit 33 shown in the first and second embodiments can also be a third embodiment, where the transmission unit 33 does not require transmission through a linkage structure but directly adopts a pivot structure, such as... Figure 29As shown, the transmission unit 33 includes a pivot member 333, which is disposed on the second upper front connecting rod 312 or the lower front connecting rod 32, and is connected to the drive unit 4. The pivot member 333 directly transmits the motion output from the drive unit 4 to the second upper front connecting rod 312, or directly to the lower front connecting rod 32. That is, the second upper front connecting rod 312 is rotatably connected to the pivot member 333. The pivot member 333 can be driven by the lead screw 42 of the drive unit 4 to perform linear motion, so that the pivot member 333 transmits the motion output from the drive unit 4 to the second upper front connecting rod 312. The pivot member 333 can be a single tube connecting both sides in the width direction, in which case the pivot member 333 is a tube, but this is not a limitation. For example, the pivot member 333 can also be two shorter pivots respectively disposed in the width direction.

[0077] refer to Figures 6 to 18 ,as well as Figures 19 to 27 As shown, in some embodiments, the adjustment component 10 has a first state 101 and a second state 102.

[0078] In the first state 101, the first front upper link 311 and the second front upper link 312 move synchronously through the connection of the releasable connector 313.

[0079] Specifically, at this time, such as Figures 6 to 11 ,or Figures 19 to 24 As shown, this is the normal state of the seat. Since the first front upper link 311 and the second front upper link 312 move synchronously through the connection of the releasable connector 313, the first front upper link 311 and the second front upper link 312 are driven synchronously through the transmission part 33, so that the rear end of the seat cushion frame 2 is fixed in the length direction, while the front end is relatively raised to achieve the adjustment of the tilt posture.

[0080] for Figures 2 to 28 In the first and second embodiments of the transmission unit 33 with the linkage assembly shown, the specific motion transmission path can be as follows: the movement of the lead screw 42 drives the inclined connecting rod 331 rotatably connected to the lead screw 42. Since the inclined connecting rod 331 then drives the lower front tube 332, the lower front tube 332 drives the lower front connecting rod 32, which in turn drives the second upper front connecting rod 312 connected to the lower front connecting rod 32 to move synchronously with the first upper front connecting rod 311. This ultimately drives the seat cushion frame 2 rotatably connected to it, resulting in the seat cushion frame 2 being fixed at its rear end in the length direction, while the front end is relatively raised. Figures 6 to 8 The initial position shown is raised to Figures 9 to 11 The zero-gravity position, or as Figures 19 to 21 The initial position shown is raised to Figures 22 to 24 The zero-gravity position is used to provide zero-gravity seating functionality.

[0081] In the second state 102, the releasable connector 313 is released, and the first front upper link 311 and the second front upper link 312 are desynchronized, allowing the first front upper link 311 to rotate relative to the second front upper link 312.

[0082] In the second state 102, the releasable connector 313 is released, and the first front upper link 311 and the second front upper link 312 are desynchronized, allowing the first front upper link 311 to rotate relative to the second front upper link 312. For details, please refer to... Figures 12 to 14 ,or Figures 25 to 27 As shown, for example, when the seat is in collision mode, such as when a collision occurs or when the system predicts in advance that the probability of a collision exceeds a threshold, the release connector 313 is released, and the first front upper link 311 and the second front upper link 312 are desynchronized; causing the front end of the seat cushion frame 2 to lower back to its original position, i.e., from... Figures 9 to 11 or Figures 22 to 24 The relatively elevated zero-gravity position shown by the zero-gravity position quickly returns to its original position. Figures 12 to 14 ,or Figures 25 to 27 The safety position shown can coincide with or not coincide with the initial position, and can be adjusted according to the safety requirements of different seat models. The specific motion transmission path can be as follows: In the collision accident mode, the drive unit 4 stops providing driving force, and the seat cushion frame 2 is subjected to the occupant's gravity and moves downward at the front end, driving the first front upper link 31. Since the first front upper link 311 and the second front upper link 312 are desynchronized at this time, the first front upper link 31 rotates relative to the second front upper link 312, thus completing the motion path, without needing to continue driving the tilt link 331.

[0083] Additionally, in some embodiments, such as Figures 6 to 14 as well as Figures 19 to 27As shown, the adjustment assembly 10 may further include: a cable 5, one end of which is connected to the base frame 1 and the other end of which is connected to the seat frame 2; the length of the cable 5 between one end and the other end is variable; preferably, it also includes a pretensioner 6, which is connected to one end of the cable 5. In a first state 101, the seat frame 2 is raised relative to the base frame 1 on the other side in the length direction by a height adjustment linkage assembly, and the length of the cable 5, which is housed in the pretensioner 6, is pulled out from inside the pretensioner 6; in a second state 102, the length of the cable 5 is retracted into the pretensioner 6. It is understood that the structure employing cable 5 and pretensioner 6 allows the pretensioner 6 to provide a force that drives the front end of the seat cushion frame 2 to rotate downwards during a collision by adjusting the length of cable 5. This enables faster return to its original position, especially in scenarios with stricter safety requirements. The inventors discovered that in some zero-gravity seat modes, the occupant's center of gravity is near the connection between the seat cushion and the backrest. Relying solely on gravity to provide the downward restoring force during a collision results in a slower return. Therefore, the structure using cable 5 and pretensioner 6 can further accelerate the return to its original position. However, it is understood that the return speed of a solution without cable 5 and pretensioner 6 generally meets safety requirements. The use of cable 5 and pretensioner 6 is merely a further optimization of the safety features of the aforementioned structure. It is also understood that cable 5 can pull down the front part of the seat cushion frame 2 precisely when a collision is triggered, thereby facilitating the return to its original position. It should be clarified that during the zero-gravity adjustment of the seat cushion, i.e., the raising and lowering of the front part of the seat cushion frame 2, the cable 5 is generally not under stress. The inventors discovered that applying stress would affect the adjustment of the seat cushion frame 2; that is, the cable 5 can be considered a rigid component, and its elastic force can be ignored. When a collision is triggered, regardless of whether the front part of the seat cushion frame 2 is raised to the middle or highest position, the pretensioner 6 will shorten the rope to a fixed minimum length, while simultaneously promoting the front part of the seat cushion frame 2 to be pulled to the lowest position.

[0084] refer to Figures 2 to 14As shown, in the first embodiment, the structure of the releasable connector 313 may include an elastic component 3132, including an actuator 31321 and an elastic component 31322. In the first state 101, the elastic component 3132 is constrained so that the first front upper link 311 and the second front upper link 312 are relatively fixed and move synchronously. In the second state 102, the actuator 31321 is actuated so that the constraint of the elastic component 31323 is released, thereby releasing the fixation of the first front upper link 311 and the second front upper link 312, and causing the first front upper link 311 and the second front upper link 312 to be desynchronized. For example, in a first state 101, the actuator 31321 provides a driving force to compress the elastic element 31323, thereby providing an elastic force to press the first front upper link 311 and the second front upper link 312 together, so that they are relatively fixed and move synchronously. In a second state 102, the actuator 31321 releases the driving force, thereby releasing the elastic force of the elastic element 31323 to release the pressure on the first front upper link 311 and the second front upper link 312, thus desynchronizing the first front upper link 311 and the second front upper link 312. The specific structure of the actuator 31321 can be a conventional actuator, such as a hydraulic drive, an electromagnetic drive, or other common actuators, which will not be described in detail here. In some embodiments, the elastic component 3132 also includes a pin 31323, which is connected to the actuator 31321 at one end and to the elastic element 31322 at the other end. Furthermore, the release direction of the pin 31323 can be from the outside to the inside in the width direction as shown in the figure, or vice versa, from the inside to the outside. This can be adjusted according to specific spatial arrangement requirements. It can be understood that the constraint between the actuator 31321 and the elastic element 3132, and the structure for releasing the constraint, are not limited to the above description and can employ various different schemes. For example, one scheme could be that the actuator 31321 pulls the elastic element 3132; when the actuator 31321 is triggered, it pulls out the elastic element 3132 to release the constraint. For example, one solution is that the actuator 31321 can act as a lock and unlocker for the elastic member 3132. That is, in the normal state, the elastic member 3132 is in a compressed or extended state and has a tendency to move. However, due to the locking effect of the actuator 31321, the elastic member 3132 remains stationary. When triggered, the actuator 31321 releases the lock on the elastic member, and the compressed or extended state of the elastic member 3132 is released and it moves, thereby releasing the fixing effect.

[0085] Or, refer to Figures 15 to 27As shown, in the second embodiment, the releasable connector 313 includes an explosive bolt 3131. The first front upper link 311 is fixedly connected to the second front upper link 312 in the third position by the explosive bolt 3131. The explosive bolt 3131 explodes and releases the synchronous movement of the first front upper link 311 and the second front upper link 312, causing the adjustment component 10 to switch from the first state 101 to the second state 102.

[0086] The first embodiment using an actuator can be used multiple times and is easy to control. The second embodiment using an explosion bolt has a simpler structure. The form of the releasable connector in the first and second embodiments can be selected according to actual needs.

[0087] Preferably, the releasable connector 313 may further include a sensing element 3133, which can sense the change from the first state 101 to the second state 102 and output a sensing signal. The release signal obtained from the sensing signal can be transmitted to the explosive bolt 3131 for explosive release, or transmitted to the actuator 31321 to release the driving force.

[0088] To identify accidents, the position of sensing element 3133 here is for illustrative purposes only. Sensing element 3133 can be a collision sensor, for example, configured as a pre-collision sensor. In the event of a collision, the collision sensor provides an output sensing signal. The vehicle's body control module (BCM), domain controller, or cloud controller of the vehicle network can calculate a release signal based on this sensing signal. The release signal obtained from this sensing signal can be transmitted to the burst bolt 3131 for explosive release, or transmitted to the actuator 31321 to release the driving force. Therefore, at the moment of an accident or when an accident is judged to be likely to occur, the front height of the seat cushion frame 2 quickly lowers back to its original position, thereby allowing the vehicle seat user, i.e., the occupant, to quickly return to their original position, ensuring vehicle safety.

[0089] As introduced above, such as Figure 30 As shown, this application also provides a method for operating a seat, using the seat 1000 described in the above embodiments. For example, if the seat 1000 is a zero-gravity seat, in the first state 101, the seat 1000 is in zero-gravity mode, and in the second state 102, the seat is in collision accident mode. The method for operating the seat may include the following steps:

[0090] In the first state 101, the driving force provided by the drive unit 4 drives the first front upper link 311 and the second front upper link 312 to move synchronously. The driving force drives the first front upper link 311 to overcome the weight of the occupant of the seat, thereby raising the height of the seat cushion frame 2 on the other side of the length direction to a zero-gravity position.

[0091] In the second state 102, the releasable connector 313 is released, the first front upper link 311 and the second front upper link 312 are desynchronized, so that the first front upper link 311 can rotate relative to the second front upper link 312. The first front upper link 311 loses its driving force, and the first front upper link 311 is subjected to the weight of the occupant of the seat, causing the height of the seat cushion frame 2 on the other side of the length direction to be raised and lowered from the zero gravity position to the design position.

[0092] In summary, the beneficial effects of the adjustment components, seats, and seat usage methods described in the above embodiments include, but are not limited to, the separate first and second front upper links in the front upper link assembly, which are connected by a releasable connector, allowing the return from the zero-gravity position to be achieved through the separation of the front upper links during a collision. This achieves the functions of zero gravity and return through a simple structure. In particular, the transmission part can be configured as having an inclined link assembly or directly connected by a shaft as needed, and can be adjusted according to different spatial arrangement requirements, thus making it easier to adapt to the spatial arrangement inside the seat.

[0093] While this application discloses preferred embodiments as described above, it is not intended to limit the scope of this application. Any changes and modifications can be made by those skilled in the art without departing from the spirit and scope of this application. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. An adjustment component (10), characterized in that, include: Base frame (1), for fixing to the outside; The seat frame (2) is rotatably connected to the base frame (1) on one side of the length direction and connected to the base frame (1) on the other side of the length direction via a tilt adjustment linkage assembly. The tilt adjustment linkage assembly includes: The front upper link assembly (31) includes a first front upper link (311), a second front upper link (312), and a releasable connector (313). The first front upper link (311) is rotatably directly connected to the seat frame (2) in a first position, rotatably connected to the second front upper link (312) in a second position, and connected to the second front upper link (312) via the releasable connector (313) in a third position. The transmission unit (33) is connected to the second front upper link (312) on one side and to the drive unit (4) on the other side, and transmits the motion output by the drive unit (4) to the second front upper link (312); The adjustment component (10) has a first state (101) and a second state (102): In the first state (101), the first front upper link (311) and the second front upper link (312) move synchronously through the connection of the releasable connector (313); In the second state (102), the releasable connector (313) is released, and the first front upper link (311) and the second front upper link (312) are desynchronized, so that the first front upper link (311) can rotate relative to the second front upper link (312).

2. The adjustment component (10) as claimed in claim 1, characterized in that, The transmission unit (33) includes a front lower connecting rod (32), which is rotatably and directly connected to the base frame (1) and the second front upper connecting rod (312); an inclined connecting rod (331) and a front lower tube (332); wherein the inclined connecting rod (331) and the front lower tube (332) are fixed relative to each other, the inclined connecting rod (331) is fixed to the front lower tube (332) at the fourth position and connected to the drive unit (4) at the fifth position, and the front lower connecting rod (32) is fixedly connected to the front lower tube (332); Alternatively, the transmission unit (33) may include a pivot (333) disposed on the second upper front link (312) or on the lower front link (32) and connected to the drive unit (4), thereby directly transmitting the motion output by the drive unit (4) to the second upper front link (312) or directly to the lower front link (32).

3. The adjustment component (10) as described in claim 1, characterized in that, The releasable connector (313) includes an explosion bolt (3131), and the first front upper link (311) is fixedly connected to the second front upper link (312) in a third position by the explosion bolt (3131); or The releasable connector (313) includes an elastic component (3132), including an actuator (31321) and an elastic element (31322). In the first state (101), the elastic element (3132) is constrained such that the first front upper link (311) and the second front upper link (312) are relatively fixed and move synchronously. In the second state (102), the actuator (31321) is actuated to release the constraint of the elastic element (31323), thereby releasing the fixation on the first front upper link (311) and the second front upper link (312), and causing the first front upper link (311) and the second front upper link (312) to be desynchronized.

4. The adjustment component (10) as described in claim 3, characterized in that, The elastic component (3132) further includes a pin (31323) which is connected to the actuator (31321) at one end and to the elastic component (31322) at the other end.

5. The adjustment component (10) as described in any one of claims 1-4, characterized in that, Also includes: A cable (5) is connected at one end to the base frame (1) and at the other end to the cushion frame (2); the length of the cable (5) between one end and the other end is variable.

6. The adjustment component (10) as claimed in any one of claims 5, characterized in that, It also includes a pretensioner (6) connected to one end of the cable (5). In the first state (101), the seat frame (2) is lifted relative to the base frame (1) on the other side of the length direction by a tilt adjustment linkage assembly, and the length of the cable (5) housed in the pretensioner (6) is pulled out from the inside of the pretensioner (6). In the second state (102), the length of the cable (5) is retracted into the pretensioner (6).

7. The adjusting component (10) as described in any one of claims 1-4, characterized in that, The drive unit (4) includes a motor (41) and a lead screw (42). The motor (41) drives the lead screw (42) to drive the transmission unit (33) which is rotatably connected to the lead screw (42).

8. A seat (1000), characterized in that, include: The seat cushion (1001) includes the adjustment component (10) as described in any one of claims 1-7; as well as The backrest (1002) is rotatably connected to the seat cushion (1001).

9. The seat (1000) as claimed in claim 8, characterized in that, The seat (1000) is a zero-gravity seat. In the first state (101), the seat (1000) is in zero-gravity mode. In the second state (102), the seat is in collision accident mode.

10. A method for operating a seat, characterized in that, The operating method, employing the seat (1000) as described in claim 8 or 9, includes: In the first state (101), the driving force provided by the drive unit (4) drives the first front upper link (311) and the second front upper link (312) to move synchronously. The driving force drives the first front upper link (311) to overcome the weight of the occupant of the seat, thereby raising the height of the seat cushion frame (2) on the other side of the length direction to a zero gravity position. In the second state (102), the releasable connector (313) is released, the first front upper link (311) and the second front upper link (312) are desynchronized, so that the first front upper link (311) can rotate relative to the second front upper link (312). The first front upper link (311) loses the driving force. The first front upper link (311) is subjected to the gravity of the seat occupant, causing the height of the seat cushion frame (2) on the other side of the length direction to be raised and lowered from the zero gravity position to the design position.

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