Passive safety system for seat

Abstract

The invention discloses a seat passive safety system which comprises a seat body, an early warning system and a passive safety controller, the seat body is provided with a backrest angle adjusting module, a seat frame inclination angle adjusting module and a safety belt point position adjusting module, and the safety belt point position adjusting module comprises an outlet adjusting mechanism, an inserting buckle adjusting mechanism and a lower anchor point adjusting mechanism. The pre-warning system is integrated on a vehicle and used for actively recognizing a collision accident, the backrest angle adjusting module, the seat frame inclination angle adjusting module, the safety belt point position adjusting module and the pre-warning system are all in feedback connection with the passive safety controller, and the passive safety controller is used for receiving collision information of the pre-warning system. And a working instruction is sent to the backrest angle adjusting module, the seat frame inclination angle adjusting module and the safety belt point position adjusting module through the received information, so that the backrest, the seat frame, the safety belt outlet, the inserting buckle and the anchoring point can return to the optimal protection state. The method has the beneficial effect that when collision occurs, the collision damage value is reduced to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a passive safety system for seats. Background Art

[0002] As the automobile market expands, market competition becomes increasingly fierce, and customers have higher and higher requirements for the quality, refinement, and comfort of automobile products. Car seats are one of the most frequently touched and used parts of a vehicle, and they are also the first products perceived by customers. As the demand of the automobile market changes, zero-gravity seats came into being.

[0003] The zero-gravity mode of the zero-gravity seat is: the front end of the seat frame is lifted up, the backrest is tilted backward, and the leg rest is slightly tilted. In zero-gravity mode, although the user can lie on the seat in a very comfortable posture, there are still some invisible safety hazards. When the occupant sits in a non-standard position, such as lying down, the support function of the seat and the restraint function of the seat belt will decrease. Once the car collides, the life safety of the occupant will be seriously threatened.

[0004] In response to the safety issues in the zero-gravity lying mode, the applicant is currently planning to develop a measure that is the adaptive adjustment of the seat belt support point, that is, the exit position, buckle position and lower anchor point position of the three-point seat belt are all designed as adjustable structures. In the lying state, the seat belt can be automatically adjusted to the optimal restraint state according to the seat frame, backrest tilt angle and occupant body parameters. However, such safety measures still cannot fundamentally guarantee the safety of occupants 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, which can return the seat to a normal sitting position before a collision accident occurs, thereby improving its collision safety and better protecting the safety of the occupants.

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

[0007] A seat passive safety system, characterized by comprising:

[0008] A seat body, wherein the seat body is provided with a backrest angle adjustment module, a seat frame tilt adjustment module and a seat belt position adjustment module, wherein the seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism and a lower anchor point adjustment mechanism;

[0009] Early warning systems, which are integrated into the vehicle to proactively identify collisions; and

[0010] A passive safety controller is connected to the backrest angle adjustment module, the seat frame inclination adjustment module, the seat belt point adjustment module and the early warning system. The passive safety controller is used to receive collision information from the early warning system and send work instructions to the backrest angle adjustment module, the seat frame inclination adjustment module and the seat belt point adjustment module through the received collision information; after the backrest angle adjustment module and the seat frame inclination adjustment module receive the work instructions, the backrest and the seat frame can return to a normal sitting position; after the seat belt point adjustment module receives the work instructions, the seat belt outlet, buckle and lower anchor point can return to the optimal restraint state when the seat is in a normal sitting position.

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

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

[0013] Preferably, the backrest angle adjustment module, seat frame inclination 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 state of the seat in a short time.

[0014] Preferably, the passive safety controller is connected to an information acquisition module, which can obtain occupant information by manual input or intelligent recognition automatic input, and 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] As a preferred embodiment: the seat body further comprises a headrest angle adjustment module and a leg rest angle adjustment module, and the headrest angle adjustment module and the leg rest angle adjustment module are both connected to the passive safety controller;

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

[0017] Preferably, the seat belt of the seat body is a three-point seat belt, including an outlet component installed on one side of the shoulder of the backrest, and a socket 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 for controlling the upward, downward, leftward and rightward movement of the outlet component;

[0019] The buckle adjustment mechanism has a four-way adjustment function for controlling the forward, backward, left and right movement of the socket 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, 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 through a pin shaft, and 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 shaft, and 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 mounted with a backrest, and the backrest is provided with a backrest collapse energy absorption structure;

[0023] A first crush protection device is installed on the seat frame crush mechanism, and a second crush protection device is installed on the backrest crush energy absorption structure. The first crush protection device and the second crush protection device are both 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 the first crush protection device and / or the second crush protection device to open.

[0024] Preferably: the seat frame collapse mechanism includes a collapse plate installed on one side of the upper linkage component, the collapse plate has an adapter hole located at the lower part, a collapse channel located at the upper part, and a weakened portion formed between the adapter hole and the collapse channel, the upper linkage component has a strip avoidance hole, the adapter hole and the collapse channel are both exposed in the strip avoidance hole; the pin shaft is supported in the adapter hole, and when the seat is impacted by external force, the pin shaft can force the weakened portion to deform and tear open, and enter the collapse channel and move upward.

[0025] Preferably, the first collapse protection device comprises a block detachably mounted in the strip-shaped avoidance hole, and a movable traction mechanism for driving the block to separate from the strip-shaped avoidance hole, and the movable traction mechanism is connected to the passive safety controller.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. With the seat passive safety system provided by the present invention, when the early warning system detects a potential collision risk, the collision accident information is fed back to the passive safety controller in advance. The passive safety controller can quickly return the backrest and seat frame to the normal sitting position within a certain period of time, and quickly return the seat belt outlet, buckle and lower anchor point to the optimal restraint state in the normal sitting position of the seat. In this way, the seat and seat belt can better protect the occupants and minimize the collision damage value.

[0028] 2. With the passive seat safety system provided by the present invention, when a vehicle collides, the seat frame collapse mechanism on the seat frame can instantly return the seat frame to a normal sitting position, providing multiple safeguards for the safety of the seat. At the same time, the collapse process itself will absorb energy and reduce the impact force of the seat, thereby optimizing the damage value to the occupants.

[0029] 3. The overall seat system combines the passive safety system before collision with the seat collapse mechanism during collision, forming a comprehensive protection measure that can minimize occupant injuries when a collision occurs, thereby achieving more efficient safety protection.

[0030] 4. In addition to the zero-gravity sitting posture, the safety system provided by the present invention can also be applied to seat modes with any other postures, such as: only the backrest is tilted, only the front end of the seat frame is lifted, or only the leg rest is unfolded. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the seat body;

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

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

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

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

[0038] Figure 8 A partial structural diagram showing the connection relationship between the pin shaft 6, the upper linkage component 3 and the collapse plate 5 (normal sitting position);

[0039] Fig. 9 It is a partial structural schematic diagram showing the connection relationship between the pin shaft 6, the upper linkage component 3 and the collapse plate 5 (the state after collapse occurs);

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

[0041] Fig.11 It is a partial schematic diagram of the seat after the impact and collapse (only the seat frame 2 is shown);

[0042] Fig.12 For along Fig.10 Sectional view of AA. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with embodiments and drawings.

[0044] The directions "front", "back", "up", "down", "left" and "right" mentioned in this embodiment are based on the directions of the car seat in normal use.

[0045] like Figure 1 As shown, a seat passive safety system includes a seat body, a warning system and a passive safety controller. The seat body is equipped with a backrest angle adjustment module, a seat frame inclination adjustment module and a seat belt point adjustment module, wherein the backrest angle adjustment module is used to adjust the rotation angle of the seat back 7, and the seat frame inclination adjustment module is used to adjust the rotation angle of the seat frame 2. The seat belt point adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism and a lower anchor point adjustment mechanism. The warning system is integrated in the vehicle and can actively identify impending collision accidents. The backrest angle adjustment module, the seat frame inclination adjustment module, the seat belt point adjustment module and the warning system are all connected to the passive safety controller for feedback. When the early warning system detects a potential collision hazard, it can promptly feed back the information to the passive safety controller, which then sends work instructions to the backrest angle adjustment module, the seat frame inclination adjustment module and the seat belt point adjustment module. After the backrest angle adjustment module and the seat frame inclination adjustment module receive the work instructions, the backrest 7 and the seat frame 2 can return to a normal sitting position. After the seat belt point adjustment module receives the work instructions, the seat belt outlet, buckle and lower anchor point can return to the optimal restraint state under the normal sitting position of the seat, thereby minimizing the collision damage value.

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

[0047] After the passive safety controller receives the collision information from the early warning system, the backrest 7 and the seat frame 2 are required to return to the normal sitting position in a short time, and the safety belt outlet, buckle and lower anchor point are required to return to the optimal restraint state in the normal sitting position of the seat in a short time. In this embodiment, the backrest 7, the seat frame 2, the safety belt outlet, buckle and lower anchor point are all required to return within 0.2s. To this end, the backrest angle adjustment module, the seat frame inclination adjustment module, the outlet adjustment mechanism, the buckle adjustment mechanism and the lower anchor point adjustment mechanism are all equipped with a quick reset device, which is used to enable the corresponding backrest, seat frame, safety belt outlet, buckle and lower anchor point to return to the optimal restraint state in the normal sitting position of the seat in a short time. Of course, the reset time can also be shortened by increasing the driving power of the backrest angle adjustment module, the seat frame inclination adjustment module, the outlet adjustment mechanism, the buckle adjustment mechanism and the lower anchor point adjustment mechanism to strive for more sufficient safety time.

[0048] For example Figure 1 As shown, the passive safety controller is also connected to an information acquisition module, which is used to provide the passive safety controller with occupant information, including basic parameters such as height, gender, weight, and leg length ratio. The passive safety controller sends a work instruction to the seat belt point adjustment module based on the occupant information provided by the information acquisition module, and then the outlet adjustment mechanism, the buckle adjustment mechanism, and the lower anchor point adjustment mechanism can adaptively fine-tune the seat belt to the optimal restraint state according to the occupant's body shape and sitting posture, which helps to improve the safety of the seat. In this embodiment, the information acquisition module obtains occupant information by manual input or intelligent recognition automatic input.

[0049] Please refer to Figure 2 and 3 The seat belt of the seat body is a three-point seat belt, which includes an outlet component 11a installed on one side of the shoulder of the backrest 7, and a socket component 11b and a lower anchor component 11c installed on the left and right sides of the seat frame 2. Among them, the outlet adjustment mechanism has a four-way adjustment function, which is used to control the upward, downward, left and right movement of the outlet component 11a; the buckle adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the socket component 11b; the lower anchor adjustment mechanism has a four-way adjustment function, which is used to control the forward, backward, left and right movement of the lower anchor component 11c. By controlling the four-way adjustment function of the three adjustment structures, the seat belt can always be in the best restraint state.

[0050] Re-attend Figure 4The buckle adjustment mechanism includes a forward and backward moving module 12 and a left and right moving module. The forward and backward moving module 12 includes a transition block 12b, a base 12a, a screw rod 12c rotatably mounted on the base, and a motor 12d for driving the screw rod 12c to rotate. The transition block 12b is threadedly sleeved on the screw rod 12c, and the motor 12d drives the screw rod 12c to rotate, which can drive the transition block 12b to slide forward and backward on the base 12a. The socket component 11b is fixedly mounted on the transition block 12b, and the transition block 12b slides forward and backward to drive the socket component 11b to move forward and backward.

[0051] For example Figure 4 As shown, two guide rods 12e parallel to the screw rod 12c are fixedly mounted on the base 12a, and the transition block 12b is slidably sleeved on the two guide rods 12e. With such a 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] Further, the base 12a is connected to the left-right moving module, which is used to drive the base to slide left-right, thereby driving the socket component 11b to move left-right. In this embodiment, the left-right moving module adopts 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 adjustment mechanism is consistent with the four-way adjustment function of the buckle adjustment mechanism, which will not be described in detail here. Since the execution parts of the outlet adjustment mechanism, the buckle adjustment mechanism and the lower anchor adjustment mechanism all use motors as output power, the passive safety controller sends instructions to the motor to drive the corresponding mechanism to move adaptively. The controller sends action instructions to the motor, which 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, wherein the headrest angle adjustment module is used to adjust the rotation angle of the seat headrest 8, and the leg rest angle adjustment module is used to adjust the rotation angle of the seat leg rest 9, and the headrest angle adjustment module and the leg rest angle adjustment module are both connected to the passive safety controller. After the passive safety controller sends a working instruction to the headrest angle adjustment module and the leg rest angle adjustment module through the received collision information, the headrest 8 and the leg rest 9 can quickly return to the normal sitting position, further improving the safety of the seat.

[0055] like Figure 5 , 10As shown in FIG. 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. 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 through a pin 6. A recliner 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 a 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 piece 5 installed on one side of the upper linkage component 3, the collapse piece 5 has a transfer hole 5a located at the lower part, a collapse channel 5b located at the upper part, and a weakened portion 5c formed between the transfer hole 5a and the collapse channel 5b, the upper linkage component 3 has a strip avoidance hole 3a, the transfer hole 5a and the collapse channel 5b are both exposed in the strip avoidance hole 3a, the collapse piece 5 is a 1mm thick metal piece, and the collapse piece 5 is welded to the inner side of the upper linkage component 3. Such a design has the advantages of low cost and high reliability.

[0057] Further, from Figure 7 It can be seen that the weakened portion 5c located on one side of the collapse channel 5b is an upwardly protruding arc surface structure 5c1, and a downwardly recessed deformation guide groove 5c2 is provided in the middle of the arc surface structure 5c1. The deformation guide groove 5c2 is an inverted triangle structure that is wide at the top and narrow at the bottom. Such a design can ensure that the metal sheet is more easily torn when a collapse reaction occurs and collapses in a preset direction.

[0058] Re-attend Figure 8-11 , the pin 6 is supported in the adapter hole 5a. In the zero gravity mode, when the impact force is greater than the destructive force of the collapse plate 5, the pin 6 can force the weakened portion 5c to deform and tear open, and enter the collapse channel 5b to move upward, thereby completing the entire collapse reaction. The collapse is passive collapse, which is completed by mechanical destruction. The collapse process itself will absorb energy and reduce the impact force of the seat, thereby optimizing the damage value to the occupant. When the collapse reaction occurs, the front end of the seat frame 2 will drop rapidly while the pin 6 moves upward, and the seat can instantly return to the normal sitting mode.

[0059] Please refer to Figure 1In this embodiment, the rear end of the seat frame 2 is rotatably mounted with a backrest 7, and the backrest 7 is provided with a backrest crush energy absorption structure, which is consistent with the working principle of the seat frame crush mechanism. When the vehicle collides, the backrest crush energy absorption structure can force the backrest 7 to quickly return to a normal sitting position. A first crush protection device 13 is installed on the seat frame crush mechanism, and a second crush protection device is installed on the backrest crush energy absorption structure. The first crush protection device 13 and the second crush protection device have the same structure and are both connected to the passive safety controller for feedback. After the early warning system feeds back the accident collision signal to the passive safety controller, the passive safety controller can select the first crush protection device 13 and / or the second crush protection device to open according to the current adjustment posture of the seat. Thereby, the seat in different sitting states can maximize the protection of the occupants.

[0060] For example: in zero gravity mode, the first crush protection device 13 and the second crush protection device are opened at the same time, so that the seat frame 2 and the backrest 7 can be crushed back to their original positions during a collision. In the normal sitting position mode of the seat, the first crush protection device 13 and the second crush protection device are closed, and no crushing is achieved during a collision. Only when the seat frame 2 is tilted upward, the first crush protection device 13 is opened, and the second crush protection device is closed, so that only the seat frame 2 can be crushed back to its original position. Only when the backrest 7 is tilted backward, the second crush protection device is opened, and the first crush protection device 13 is closed, so that only the backrest 7 can be crushed back to its original position.

[0061] Re-attend Fig.12 The first collapse protection device 13 includes a block 13a detachably mounted in the strip-shaped avoidance hole 3a, and a moving traction mechanism 13b for driving the block 13a to separate from the strip-shaped avoidance hole 3a, and the moving traction mechanism 13b is connected to the passive safety controller. When the first collapse protection device 13 receives the opening information of the passive safety controller, the moving traction mechanism 13b can drive the block 13a to separate from the strip-shaped avoidance hole 3a, so that the pin 6 breaks through the weakened portion 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 driving the traction rod 13b1 to perform forward and backward linear motion. The linear motor 13b2 drives the traction rod 13b1 to perform linear motion backward, and can drag the block 13a out of the strip-shaped avoidance hole 3a. Since the execution part of the first collapse protection device 13 uses the linear motor 13b2 as output power, the passive safety controller sends a command to the linear motor 13b2, which can drive the traction rod 13b1 to drag the block 13a out of the strip-shaped avoidance hole 3a.

[0063] Based on this, in order to further improve the safety of the seat, other positions of the seat such as the headrest and footrest are provided with a crushing mechanism with the same structure as the seat frame, and each corresponding crushing mechanism is provided with an Nth crushing protection device consistent with the working principle of the first crushing protection device 13.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A seat passive safety system, characterized in that: include: A seat body, wherein the seat body is provided with a backrest angle adjustment module, a seat frame tilt adjustment module and a seat belt position adjustment module, wherein the seat belt position adjustment module includes an outlet adjustment mechanism, a buckle adjustment mechanism and a lower anchor point adjustment mechanism; Early warning systems, which are integrated into the vehicle to proactively identify collisions; as well as A passive safety controller is connected to the backrest angle adjustment module, the seat frame inclination adjustment module, the seat belt point adjustment module and the early warning system. The passive safety controller is used to receive collision information from the early warning system and send work instructions to the backrest angle adjustment module, the seat frame inclination adjustment module and the seat belt point adjustment module through the received collision information; after the backrest angle adjustment module and the seat frame inclination adjustment module receive the work instructions, the backrest and the seat frame can return to a normal sitting position; after the seat belt point adjustment module receives the work instructions, the seat belt outlet, buckle and lower anchor point can return to the optimal restraint state when the seat is in a normal sitting position.

2. The 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 a normal sitting position within 0.2 seconds after receiving the collision information; the seat belt outlet, buckle and lower anchor point return to the optimal restraint state in the normal sitting position of the seat within 0.2 seconds.

3. The seat passive safety system according to claim 2, characterized in that: The backrest angle adjustment module, seat frame inclination adjustment module, outlet adjustment mechanism, buckle adjustment mechanism and lower anchor point adjustment mechanism are all equipped with a quick reset device for enabling the corresponding backrest, seat frame, safety belt outlet, buckle and lower anchor point to return to the optimal restraint state in the normal sitting position of the seat in a short time.

4. The seat passive safety system according to claim 1, characterized in that: The passive safety controller is connected to an information acquisition module, which can obtain occupant information by 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 seat passive safety system according to claim 1, characterized in that: The seat body further includes a headrest angle adjustment module and a leg rest angle adjustment module, and the headrest angle adjustment module and the leg rest angle adjustment module are both connected to the passive safety controller; After the passive safety controller sends a working instruction to the headrest angle adjustment module and the leg rest angle adjustment module through the received collision information, the headrest and the leg rest can return to a normal sitting position.

6. The seat passive safety system according to claim 1, characterized in that: The seat belt of the seat body is a three-point seat belt, including an outlet component installed on one side of the shoulder of the backrest, and a socket component and a lower anchor point component installed on the left and right sides of the seat frame; The outlet adjustment mechanism has a four-way adjustment function for controlling the upward, downward, leftward and rightward movement of the outlet component; The buckle adjustment mechanism has a four-way adjustment function for controlling the forward, backward, left and right movement of the socket 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 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, 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 through a pin shaft, and 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 shaft, and after a vehicle collision, the seat frame collapse mechanism can force the seat frame to quickly return to a normal sitting position.

8. The seat passive safety system according to claim 7, characterized in that: The rear end of the seat frame is rotatably mounted with a backrest, and the backrest is provided with a backrest collapse energy absorption structure; A first crush protection device is installed on the seat frame crush mechanism, and a second crush protection device is installed on the backrest crush energy absorption structure. The first crush protection device and the second crush protection device are both 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 the first crush protection device and / or the second crush protection device to open.

9. The 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 transfer hole located at the lower part, a collapse channel located at the upper part, and a weakened portion formed between the transfer hole and the collapse channel, the upper linkage component has a strip avoidance hole, the transfer hole and the collapse channel are both exposed in the strip avoidance hole; the pin shaft is supported in the transfer hole, when the seat is impacted by external force, the pin shaft can force the weakened portion to deform and tear open, and enter the collapse channel to move upward.

10. The seat passive safety system according to claim 9, characterized in that: The first collapse protection device includes a block detachably installed in the strip-shaped avoidance hole, and a movable traction mechanism for driving the block to separate from the strip-shaped avoidance hole, and the movable traction mechanism is connected to the passive safety controller.

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