Seat passive safety system

Abstract

This invention discloses a passive safety system for a seat, including a seat body, a warning system, and a passive safety controller. The seat body includes a backrest angle adjustment module, a seat frame tilt angle adjustment module, and a seat belt position adjustment module. The seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism, and a lower anchor point adjustment mechanism. The warning system is integrated into the vehicle for actively identifying collision accidents. The backrest angle adjustment module, seat frame tilt angle adjustment module, seat belt position adjustment module, and warning system are all connected to the passive safety controller for feedback. The passive safety controller receives collision information from the warning system and sends operating commands to the backrest angle adjustment module, seat frame tilt angle adjustment module, and seat belt position adjustment module based on the received information, so that the backrest, seat frame, seat belt outlet, buckle, and lower anchor point can return to their optimal protective state. The beneficial effect of this invention is that it maximizes the reduction of collision damage in the event of a collision.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more specifically to a passive safety system for a seat. Background Technology

[0002] As the automotive market expands, market competition intensifies, and customers demand higher quality, refinement, and comfort from automotive products. Car seats are among the most frequently touched and used components in a vehicle, and as the first product customers perceive, zero-gravity seats have emerged in response to changes in automotive market demands.

[0003] The zero-gravity mode of a zero-gravity seat involves lifting the front of the seat frame upwards, tilting the backrest backwards, and slightly tilting the leg rest. While users can lie comfortably in zero-gravity mode, some safety hazards remain. When occupants are in non-standard positions, such as a reclining posture, the seat's support and seatbelt restraint are reduced. In the event of a collision, the occupants' lives will be seriously threatened.

[0004] Regarding safety concerns in zero-gravity reclining mode, the applicant's current proposed solution is adaptive adjustment of the seatbelt support points. Specifically, the exit position, buckle position, and lower anchor point of the three-point seatbelt are all designed to be adjustable. In a reclining position, the seatbelt can automatically adjust to the optimal restraint state based on the seat frame, backrest tilt angle, and occupant body shape parameters. However, such safety measures still cannot fundamentally guarantee occupant safety in the event of a vehicle collision. Summary of the Invention

[0005] In view of this, the present invention provides a seat passive safety system that can return the seat to a normal sitting position before a collision occurs, thereby improving its collision safety and better protecting the safety of occupants.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A passive safety system for car seats, characterized in that it includes:

[0008] The seat body includes a backrest angle adjustment module, a seat frame tilt angle adjustment module, and a seat belt position adjustment module. The seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism, and a lower anchor point adjustment mechanism.

[0009] A warning system, integrated into the vehicle, is used to proactively identify collision incidents; and

[0010] A passive safety controller is connected to the backrest angle adjustment module, seat frame tilt adjustment module, seat belt position adjustment module, and warning system. The passive safety controller receives collision information from the warning system and sends working instructions to the backrest angle adjustment module, seat frame tilt adjustment module, and seat belt position adjustment module based on the received collision information. After receiving the working instructions, the backrest angle adjustment module and seat frame tilt adjustment module can return to the normal sitting posture. After receiving the working instructions, the seat belt position adjustment module can return to the optimal restraint state of the seat in the normal sitting posture.

[0011] With the above structure, when the warning system detects a potential collision hazard, it can feed back collision information to the passive safety controller in advance. The passive safety controller can then quickly return the backrest and seat frame to a normal sitting position within a certain time, and quickly return the seat belt outlet, buckle, and lower anchor point to the optimal restraint state of the seat in a normal sitting position. In this way, the seat and seat belt can better protect the occupant and minimize the impact of a collision.

[0012] Preferably, the passive safety controller is used to return the backrest and seat frame to the normal sitting position within 0.2s after receiving collision information; and the seat belt outlet, buckle and lower anchor point return to the optimal restraint state in the normal sitting position of the seat within 0.2s.

[0013] Preferably, the backrest angle adjustment module, seat frame tilt adjustment module, outlet adjustment mechanism, buckle adjustment mechanism and lower anchor point adjustment mechanism are all equipped with a quick reset device, which is used to enable the corresponding backrest, seat frame, seat belt outlet, buckle and lower anchor point to return to the optimal restraint state in the normal sitting posture of the seat in a short time.

[0014] Preferably, the passive safety controller is connected to an information acquisition module, which can acquire occupant information through manual input or intelligent recognition automatic input. The exit adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism can adaptively move to the optimal restraint state of the seat belt according to the occupant information.

[0015] Preferably, the seat body further includes a headrest angle adjustment module and a leg rest angle adjustment module, both of which are connected to the passive safety controller;

[0016] After the passive safety controller sends working instructions to the headrest angle adjustment module and the leg rest angle adjustment module through the received collision information, the headrest and leg rest can return to the normal sitting posture.

[0017] Preferably, the seat belt of the seat body is a three-point seat belt, including an outlet component installed on the shoulder side of the backrest, and an insertion component and a lower anchor point component installed on the left and right sides of the seat frame.

[0018] The outlet adjustment mechanism has a four-way adjustment function, used to control the up, down, left, and right movement of the outlet component;

[0019] The buckle adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the plug component;

[0020] The lower anchor point adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the lower anchor point component.

[0021] Preferably, the seat body includes a base and a seat frame located on the upper side of the base. The rear end of the seat frame is rotatably connected to the base, and the front end of the seat frame is rotatably connected to an upper linkage component. The front end of the base is rotatably connected to a lower linkage component. The upper linkage component and the lower linkage component are hinged to each other by a pin. An angle adjuster is provided between the lower linkage component and the base. The upper linkage component is provided with a seat frame collapse mechanism at the position corresponding to the pin. After a vehicle collision, the seat frame collapse mechanism can force the seat frame to quickly return to a normal sitting position.

[0022] As a preferred embodiment, the rear end of the seat frame is rotatably fitted with a backrest, and the backrest is provided with a backrest collapse energy absorption structure.

[0023] A first crumple protection device is installed on the seat frame crumple mechanism, and a second crumple protection device is installed on the backrest crumple energy absorption structure. Both the first and second crumple protection devices are connected to the passive safety controller. After the early warning system feeds back the accident collision information to the passive safety controller, the passive safety controller can select to open the first and / or second crumple protection devices.

[0024] Preferably, the seat frame collapse mechanism includes a collapse plate mounted on one side of the upper linkage component. The collapse plate has a lower connecting hole, an upper collapse channel, and a weakening portion formed between the connecting hole and the collapse channel. The upper linkage component has a strip-shaped clearance hole, and both the connecting hole and the collapse channel are exposed within the strip-shaped clearance hole. The pin is supported within the connecting hole. When the seat is impacted by an external force, the pin can force the weakening portion to deform and tear open, and move upward into the collapse channel.

[0025] Preferably, the first collapsibility protection device includes a block that can be detachably installed in the strip-shaped clearance hole, and a movable traction mechanism for driving the block out of the strip-shaped clearance hole, the movable traction mechanism being connected to the passive safety controller.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The passive safety system for seats provided by this invention, when the warning system detects a potential collision hazard, feeds back the collision information to the passive safety controller in advance. The passive safety controller can quickly return the backrest and seat frame to a normal sitting position within a certain time, and quickly return the seat belt outlet, buckle, and lower anchor point to the optimal restraint state of the seat in a normal sitting position. In this way, the seat and seat belt can better protect the occupant and minimize the collision injury value.

[0028] 2. The passive safety system for seats provided by this invention enables the seat frame to instantly return to a normal sitting position when a vehicle collision occurs, providing multiple protections for the safety of the seat. At the same time, the crumple process itself absorbs energy, reduces the impact force on the seat, and thus optimizes the damage value to the occupant.

[0029] 3. The integrated seat system combines the passive safety system before a collision with the seat crumple zone during a collision, forming a comprehensive protection measure that can minimize occupant injury in the event of a collision, thereby achieving more efficient safety protection.

[0030] 4. In addition to the zero-gravity seating posture, the safety system provided by this invention can also be applied to other seat modes in any posture, such as: only the backrest is tilted, only the front of the seat frame is raised, or only the leg rest is extended. Attached Figure Description

[0031] Figure 1 This is a control principle diagram of the seat safety system of the present invention;

[0032] Figure 2 This is the front view of the seat body;

[0033] Figure 3 This is a three-dimensional structural diagram of the seat body;

[0034] Figure 4 This is a left view of the seat body;

[0035] Figure 5 This is a partial structural diagram of the seat body (only the seat frame is shown);

[0036] Figure 6 This is a schematic diagram of the structure of the upper linkage component 3;

[0037] Figure 7 This is a schematic diagram of the structure of the collapse plate 5;

[0038] Figure 8 A partial structural diagram (in a normal sitting posture) showing the connection relationship between the pin 6, the upper linkage component 3, and the collapsible plate 5.

[0039] Figure 9 A partial structural diagram showing the connection relationship between the pin 6, the upper linkage component 3, and the collapse plate 5 (the state after collapse occurs);

[0040] Figure 10 This is a partial schematic diagram of the seat in a zero-gravity state (only the seat frame 2 is shown);

[0041] Figure 11 This is a partial schematic diagram of the seat after it has collapsed following an impact (only part of the seat frame 2 is shown);

[0042] Figure 12 For along Figure 10 Sectional view of AA. Detailed Implementation

[0043] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0044] The directions “front,” “rear,” “up,” “down,” “left,” and “right” mentioned in this embodiment refer to the directions of a car seat in its normal use state.

[0045] like Figure 1 As shown, a passive safety system for a seat includes a seat body, a warning system, and a passive safety controller. The seat body includes a backrest angle adjustment module, a seat frame tilt angle adjustment module, and a seat belt position adjustment module. The backrest angle adjustment module adjusts the rotation angle of the seat back 7, and the seat frame tilt angle adjustment module adjusts the rotation angle of the seat frame 2. The seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism, and a lower anchor point adjustment mechanism. The warning system is integrated into the vehicle and can actively identify impending collisions. The backrest angle adjustment module, seat frame tilt angle adjustment module, seat belt position adjustment module, and warning system are all connected to the passive safety controller for feedback. When the warning system detects a potential collision hazard, it can promptly feed the information back to the passive safety controller. The passive safety controller then sends working instructions to the backrest angle adjustment module, seat frame tilt adjustment module, and seat belt position adjustment module. After receiving the working instructions, the backrest 7 and seat frame 2 can return to the normal sitting posture. After receiving the working instructions, the seat belt position adjustment module can return the seat belt outlet, buckle, and lower anchor point to the optimal restraint state in the normal sitting posture, maximizing the reduction of collision damage.

[0046] In this embodiment, in the passive safety system, after the passive safety controller issues a command, the backrest angle adjustment module, seat frame tilt adjustment module, outlet adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism work in reverse to perform the safety reset of the backrest, seat frame, seat belt outlet, buckle, and lower anchor point.

[0047] After receiving collision information from the warning system, the passive safety controller requires the backrest 7 and seat frame 2 to return to their normal sitting position within a short time, and the seat belt outlet, buckle, and lower anchor point to return to their optimal restraint state within the normal sitting position within a short time. In this embodiment, the backrest 7, seat frame 2, seat belt outlet, buckle, and lower anchor point are all required to return to their normal positions within 0.2 seconds. Therefore, the backrest angle adjustment module, seat frame tilt adjustment module, outlet adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism are all equipped with quick reset devices to ensure that the corresponding backrest, seat frame, seat belt outlet, buckle, and lower anchor point can return to their optimal restraint state within a short time. Alternatively, the reset time can be shortened by increasing the drive power of the backrest angle adjustment module, seat frame tilt adjustment module, outlet adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism, thus allowing for more sufficient safety time.

[0048] For example Figure 1 As shown, the passive safety controller is also connected to an information acquisition module. This module provides occupant information, including basic parameters such as height, gender, weight, and leg length ratio. Based on the occupant information provided by the information acquisition module, the passive safety controller sends a working command to the seatbelt adjustment module. Subsequently, the exit adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism can adaptively fine-tune to the optimal restraint state of the seatbelt according to the occupant's body shape and sitting posture, thus improving seat safety. In this embodiment, the information acquisition module obtains occupant information either manually or through intelligent recognition and automatic input.

[0049] Please refer to Figure 2 and 3 The seat belt is a three-point seat belt, comprising an outlet component 11a installed on the shoulder side of the backrest 7, and insertion components 11b and lower anchor point components 11c installed on the left and right sides of the seat frame 2. The outlet adjustment mechanism has a four-way adjustment function to control the up, down, left, and right movement of the outlet component 11a; the insertion buckle adjustment mechanism has a four-way adjustment function to control the forward, backward, left, and right movement of the insertion component 11b; and the lower anchor point adjustment mechanism has a four-way adjustment function to control the forward, backward, left, and right movement of the lower anchor point component 11c. By controlling the four-way adjustment functions of these three adjustment structures, the seat belt can always be in an optimal restraint state.

[0050] Revisit Figure 4The buckle adjustment mechanism includes a front-to-back moving module 12 and a left-to-right moving module. The front-to-back moving module 12 includes a transition block 12b, a base 12a, a lead screw 12c rotatably mounted on the base, and a motor 12d for driving the lead screw 12c to rotate. The transition block 12b is threaded onto the lead screw 12c. The motor 12d drives the lead screw 12c to rotate, which can cause the transition block 12b to slide back and forth on the base 12a. The socket component 11b is fixedly mounted on the transition block 12b. The back-to-back sliding of the transition block 12b can drive the socket component 11b to move back and forth.

[0051] For example Figure 4 As shown, two guide rods 12e parallel to the lead screw 12c are fixedly installed on the base 12a, and the transition block 12b is slidably fitted onto the two guide rods 12e. With this design, the two guide rods 12e play a guiding role when the transition block 12b slides, so that the transition block 12b can slide back and forth smoothly.

[0052] Furthermore, the base 12a is connected to the left-right moving module, which drives the base to slide left and right, thereby moving the socket component 11b left and right. In this embodiment, the left-right moving module uses the same driving mechanism as the front-back moving module 12, or uses other linear driving mechanisms to achieve left-right movement.

[0053] In this embodiment, the working principle of the four-way adjustment function of the outlet adjustment mechanism and the lower anchor point adjustment mechanism is the same as that of the four-way adjustment function of the buckle adjustment mechanism, and will not be described again here. Since the execution parts of the outlet adjustment mechanism, the buckle adjustment mechanism, and the lower anchor point adjustment mechanism all use motors as output power, the passive safety controller sends commands to the motors to drive the corresponding mechanisms to adaptively adjust their movement. The controller sending action commands to the motors is a conventional technical means, and will not be described in detail here.

[0054] like Figure 1 As shown, the seat body also includes a headrest angle adjustment module and a leg rest angle adjustment module. The headrest angle adjustment module is used to adjust the rotation angle of the headrest 8, and the leg rest angle adjustment module is used to adjust the rotation angle of the leg rest 9. Both the headrest angle adjustment module and the leg rest angle adjustment module are connected to the passive safety controller. After the passive safety controller sends working commands to the headrest angle adjustment module and the leg rest angle adjustment module based on the received collision information, the headrest 8 and the leg rest 9 can quickly return to their normal sitting posture, further improving the safety of the seat.

[0055] like Figure 5 , 10As shown in Figure 11, the seat body includes a base 1 and a seat frame 2 located on the upper side of the base 1. The rear end of the seat frame 2 is rotatably connected to the base 1, and the front end of the seat frame 2 is rotatably connected to an upper linkage component 3. The front end of the base 1 is rotatably connected to a lower linkage component 4. The upper linkage component 3 and the lower linkage component 4 are hinged to each other by a pin 6. An adjuster 10 is provided between the lower linkage component 4 and the base 1. The upper linkage component 3 is provided with a seat frame collapse mechanism at the position corresponding to the pin 6. After a vehicle collision, the seat frame collapse mechanism can force the seat frame 2 to quickly return to a normal sitting position, thereby providing multiple guarantees for the safety of the seat.

[0056] For example Figure 6-8 As shown, the seat frame collapse mechanism includes a collapse plate 5 installed on one side of the upper linkage component 3. The collapse plate 5 has a lower connecting hole 5a, an upper collapse channel 5b, and a weakening part 5c formed between the connecting hole 5a and the collapse channel 5b. The upper linkage component 3 has a strip-shaped clearance hole 3a. Both the connecting hole 5a and the collapse channel 5b are exposed in the strip-shaped clearance hole 3a. The collapse plate 5 is a 1mm thick metal part. The collapse plate 5 is welded to the inner side of the upper linkage component 3. This design has the advantages of low cost and high reliability.

[0057] Furthermore, from Figure 7 As can be seen, the weakening part 5c is located on one side of the collapse channel 5b and is an upwardly convex arc surface structure 5c1. The middle of the arc surface structure 5c1 is provided with a downwardly recessed deformation guide groove 5c2. The deformation guide groove 5c2 is an inverted triangular structure that is wider at the top and narrower at the bottom. This design can ensure that the metal sheet that undergoes the collapse reaction is more easily torn and collapses in the preset direction.

[0058] Revisit Figure 8-11 The pin 6 is supported within the adapter hole 5a. In zero-gravity mode, when the impact force is greater than the destructive force on the crumple plate 5, the pin 6 can force the weakened part 5c to deform and tear, and move upward into the crumple channel 5b, thereby completing the entire crumple reaction. The crumple is passive, completed through mechanical destruction. The crumple process itself absorbs energy, reducing the impact force on the seat and thus optimizing the injury value to the occupant. When the crumple reaction occurs, the front end of the seat frame 2 will quickly descend as the pin 6 moves upward, and the seat can instantly return to the normal sitting posture mode.

[0059] Please refer to Figure 1In this embodiment, a backrest 7 is rotatably mounted at the rear end of the seat frame 2. The backrest 7 is equipped with a backrest collapse energy-absorbing structure, which operates on the same principle as the seat frame collapse mechanism. After a vehicle collision, the backrest collapse energy-absorbing structure forces the backrest 7 to quickly return to its normal sitting position. A first collapse protection device 13 is installed on the seat frame collapse mechanism, and a second collapse protection device is installed on the backrest collapse energy-absorbing structure. The first and second collapse protection devices have identical structures and are both connected to the passive safety controller. After the warning system feeds back the accident collision signal to the passive safety controller, the passive safety controller can select to activate the first and / or second collapse protection devices based on the current seat adjustment posture. This allows the seat to maximize occupant protection in different seating positions.

[0060] For example: In zero-gravity mode, both the first and second crumple protection devices are activated simultaneously, allowing the seat frame 2 and backrest 7 to crumple back into their original positions during a collision. In normal seating position mode, the first and second crumple protection devices are deactivated, preventing any crumple during a collision. When only the seat frame 2 is tilted upwards, the first crumple protection device 13 is activated, and the second crumple protection device is deactivated, resulting in only the seat frame 2 crumpling back into its original position. When only the backrest 7 is tilted backwards, the second crumple protection device is activated, and the first crumple protection device 13 is deactivated, resulting in only the backrest 7 crumpling back into its original position.

[0061] Revisit Figure 12 The first collapse protection device 13 includes a block 13a detachably installed in the strip-shaped clearance hole 3a, and a movable traction mechanism 13b for driving the block 13a out of the strip-shaped clearance hole 3a. The movable traction mechanism 13b is connected to the passive safety controller. When the first collapse protection device 13 receives the opening information from the passive safety controller, the movable traction mechanism 13b can drive the block 13a out of the strip-shaped clearance hole 3a, so that the pin 6 breaks through the weakened part 5c, enters the collapse channel 5b and moves upward, thereby realizing the collapse return of the seat frame 2.

[0062] In this embodiment, the mobile traction mechanism 13b includes a traction rod 13b1 fixedly connected to the block 13a, and a linear motor 13b2 that drives the traction rod 13b1 to move back and forth in a straight line. The linear motor 13b2 drives the traction rod 13b1 to move backward in a straight line, which can drag the block 13a out of the strip-shaped clearance hole 3a. Since the execution part of the first collapse protection device 13 is powered by the linear motor 13b2, the passive safety controller sends a command to the linear motor 13b2, which drives the traction rod 13b1 to drag the block 13a out of the strip-shaped clearance hole 3a.

[0063] Based on this, in order to further improve the safety of the seat, other parts of the seat, such as the headrest and footrest, are equipped with a crumple mechanism with the same structure as the seat frame crumple mechanism. Correspondingly, each crumple mechanism is equipped with an Nth crumple protection device that works in the same way as the first crumple protection device 13.

[0064] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. A zero-gravity seat passive safety system, characterized in that, include: The seat body includes a backrest angle adjustment module, a seat frame tilt angle adjustment module, and a seat belt position adjustment module. The seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism, and a lower anchor point adjustment mechanism. A warning system, integrated into the vehicle, is used to proactively identify collision incidents; as well as A passive safety controller is connected to the backrest angle adjustment module, seat frame tilt adjustment module, seat belt position adjustment module, and warning system. The passive safety controller receives collision information from the warning system and sends working instructions to the backrest angle adjustment module, seat frame tilt adjustment module, and seat belt position adjustment module based on the received collision information. After receiving the working instructions, the backrest angle adjustment module and seat frame tilt adjustment module can return to their normal sitting posture. After receiving the working instructions, the seat belt position adjustment module can return the seat belt outlet, buckle, and lower anchor point to their optimal restraint state in the normal sitting posture. The seat belt is a three-point seat belt, including an exit component installed on the shoulder side of the backrest, and an insertion component and a lower anchor point component installed on the left and right sides of the seat frame. The buckle adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the plug component.

2. The zero-gravity seat passive safety system according to claim 1, characterized in that: The backrest angle adjustment module, seat frame tilt adjustment module, outlet adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism are all equipped with quick reset devices to enable the corresponding backrest, seat frame, seat belt outlet, buckle, and lower anchor point to return to the optimal restraint state in the normal sitting posture of the seat in a short time.

3. The zero-gravity seat passive safety system according to claim 1, characterized in that: The passive safety controller is used to return the backrest and seat frame to the normal sitting position within 0.2s after receiving collision information; and the seat belt outlet, buckle and lower anchor point return to the optimal restraint state in the normal sitting position of the seat within 0.2s.

4. The zero-gravity seat passive safety system according to claim 1, characterized in that: The passive safety controller is connected to an information acquisition module, which can acquire occupant information through manual input or intelligent recognition automatic input. The exit adjustment mechanism, buckle adjustment mechanism, and lower anchor point adjustment mechanism can adaptively move to the optimal restraint state of the seat belt according to the occupant information.

5. The zero-gravity seat passive safety system according to claim 1, characterized in that: The seat body also includes a headrest angle adjustment module and a leg rest angle adjustment module, both of which are connected to the passive safety controller; After the passive safety controller sends working instructions to the headrest angle adjustment module and the leg rest angle adjustment module through the received collision information, the headrest and leg rest can return to the normal sitting posture.

6. The zero-gravity seat passive safety system according to claim 1, characterized in that: The outlet adjustment mechanism has a four-way adjustment function, used to control the up, down, left, and right movement of the outlet component; The lower anchor point adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the lower anchor point component.

7. The zero-gravity seat passive safety system according to claim 1, characterized in that: The seat body includes a base and a seat frame located on the upper side of the base. The rear end of the seat frame is rotatably connected to the base, and the front end of the seat frame is rotatably connected to an upper linkage component. The front end of the base is rotatably connected to a lower linkage component. The upper linkage component and the lower linkage component are hinged to each other by a pin. An angle adjuster is provided between the lower linkage component and the base. The upper linkage component is provided with a seat frame collapse mechanism at the position corresponding to the pin. After a vehicle collision, the seat frame collapse mechanism can force the seat frame to quickly return to a normal sitting position.

8. The zero-gravity seat passive safety system according to claim 7, characterized in that: The rear end of the seat frame is rotatably fitted with a backrest, and the backrest is provided with a backrest collapse energy absorption structure. A first crumple protection device is installed on the seat frame crumple mechanism, and a second crumple protection device is installed on the backrest crumple energy absorption structure. Both the first and second crumple protection devices are connected to the passive safety controller. After the early warning system feeds back the accident collision information to the passive safety controller, the passive safety controller can select to open the first and / or second crumple protection devices.

9. The zero-gravity seat passive safety system according to claim 8, characterized in that: The seat frame collapse mechanism includes a collapse plate installed on one side of the upper linkage component. The collapse plate has a lower adapter hole, an upper collapse channel, and a weakened portion formed between the adapter hole and the collapse channel. The upper linkage component has a strip-shaped clearance hole, and both the adapter hole and the collapse channel are exposed within the strip-shaped clearance hole. The pin is supported within the adapter hole. When the seat is impacted by an external force, the pin can force the weakened portion to deform and tear open, and move upward into the collapse channel.

10. The zero-gravity seat passive safety system according to claim 9, characterized in that: The first collapse protection device includes a block that can be detachably installed in a strip-shaped clearance hole, and a movable traction mechanism for driving the block out of the strip-shaped clearance hole. The movable traction mechanism is connected to the passive safety controller.

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