CN114954341B

CN114954341B - Vehicle occupant restraint device, vehicle seat assembly and vehicle

Info

Publication number: CN114954341B
Application number: CN202110217843.7A
Authority: CN
Inventors: 周青; 罗睿; 陈文韬; 黄媛; 程锦
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2023-09-26
Anticipated expiration: 2041-02-26
Also published as: CN114954341A

Abstract

The invention relates to a vehicle occupant restraint device, a vehicle seat assembly and a vehicle. The vehicle occupant restraining device comprises an environment sensing module, a risk prejudging module, a control module and a restraining module, wherein the restraining module comprises a first driving piece, a rotating piece and a restraining piece; the environment sensing module is used for acquiring road environment information; the risk pre-judging module is used for judging whether the target vehicle has collision risk or not according to the road environment information; the control module is used for controlling the first driving piece to drive the rotating piece to rotate when the target vehicle has collision risk, and driving the restraining piece to move until the restraining piece is tightly attached to the shoulder of the passenger in the target vehicle. The vehicle occupant restraining device can improve the deformation of the chest of the occupant, so that the chest stress is more uniform than that of a safety belt, the trend of the diving motion of the occupant is greatly reduced, the occupant is not required to be restrained at all times in the driving process, the occupant is restrained at the proper time, and the driving comfort of the occupant is greatly improved.

Description

Vehicle occupant restraint device, vehicle seat assembly and vehicle

Technical Field

The invention relates to the technical field of passive safety of automobiles, in particular to a vehicle passenger restraining device, a vehicle seat assembly and a vehicle.

Background

In the field of passive safety of automobiles, a well-matched occupant restraint system can greatly reduce the degree of occupant injury and the rate of occupant casualties during accidents. At present, most vehicle restraint systems assembled on vehicles mainly comprise three-point type safety belts, safety airbags and seats, and the vehicle restraint systems can achieve a good restraint protection effect, but the three-point type safety belts not only can cause chest restraint force to be too concentrated, so that chest deformation is caused, rib fracture risks are increased, and in addition, the three-point type safety belts can possibly generate passenger diving motions in the restraint process, and the safety belt bellyband can invade the abdomen of a passenger in the diving motions, so that the abdomen is damaged.

In order to solve the problem that three-point type safety belts can cause too concentrated chest restraint force, many automobile manufacturers including ford, merseide, japan, and the like develop airbag type safety belts, the function principle of which is similar to that of an airbag, and the original belt-shaped form of the safety belt is expanded into a columnar form through rapid inflation in the collision process, so that the contact area between the safety belt and the chest of an occupant is increased during the collision, and the damage of the concentrated load of the safety belt to the chest structure of the occupant is reduced. In addition, in order to solve the problem of intrusion of the webbing into the abdomen of the occupant due to the occupant's descent, many have studied devices for preventing the occupant's descent, which restrict forward and downward movement of the hips and buttocks of the occupant at the time of collision, embodiments of which include adding a reinforcing structure to the front portion of the seat cushion, or changing the rigidity of the seat cushion portion structure, and the like.

The above-mentioned related art can improve the restraint defect of the seat belt, but cannot fundamentally remove the danger caused by the seat belt, for example, the inflatable seat belt is used to involve factors such as gas inflation, seat belt expansion and the like, and the seat belt airbag is likely to expand in time or in wrong time, so that the occupant is damaged. Meanwhile, the inflatable safety belt reduces the repeated utilization rate of the safety belt and improves the replacement cost of the safety belt. The anti-dive mechanism is also a danger caused by intrusion of the belt webbing. The above techniques are therefore essentially all due to the lack of restraint configuration of the safety belt.

In addition, in an automatic driving automobile, due to insufficient space in the automobile and the fact that the existing automobile collision early warning function can not realize accurate early warning of multi-directional collision, the existing safety belt is matched with the restraint system of the safety airbag to apply restraint to passengers all the time, and the driving comfort of the passengers is greatly reduced.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a vehicle occupant restraint device, a vehicle seat assembly, and a vehicle.

A vehicle occupant restraint device, the vehicle occupant restraint device comprising: the system comprises an environment sensing module, a risk prejudging module, a control module and a constraint module, wherein the constraint module is used for being installed on a seat of a target vehicle and comprises a first driving piece, a rotating piece and a constraint piece;

the environment sensing module is used for acquiring and sending road environment information to the risk prejudging module;

the risk pre-judging module is used for judging whether the target vehicle has collision risk according to the road environment information, and then sending a judging result to the control module;

the control module is used for controlling the first driving piece to drive the rotating piece to rotate when the target vehicle has collision risk, and then driving the restraining piece to move until the restraining piece is tightly attached to the shoulder of the passenger in the target vehicle.

In one embodiment, the rotating member includes: the upper rotating piece and the lower rotating piece are distributed in parallel along the vertical direction, and are respectively provided with a connecting end and a rotating end which are distributed relatively;

the upper rotating part and the lower rotating part are respectively connected with the upper end and the lower end of the constraint part, the rotating end of the upper rotating part is used for being rotatably connected with the seat, the rotating end of the lower rotating part is connected with the first driving part, and the rotating end of the lower rotating part can drive the rotating end of the upper rotating part to rotate in the rotating process.

In one embodiment, when the lower rotating member and the upper rotating member rotate to the horizontal direction, the lower rotating member and the upper rotating member are in an arc-shaped rod-shaped structure protruding upwards.

In one embodiment thereof, the vehicle occupant restraint device further includes: the lower mounting seat and the upper mounting seat are both used for being fixed on the seat;

the first driving piece is arranged on the lower mounting seat, and the rotating end of the upper rotating piece is rotatably arranged on the upper mounting seat.

In one embodiment, the first driving member is a motor, and an output end of the first driving member is connected with the lower rotating member.

In one embodiment thereof, the vehicle occupant restraint device further includes a locking module including: the second driving piece, a ratchet wheel and a rotatable pawl are arranged on the output end of the second driving piece;

the control module is also used for controlling the second driving piece to drive the pawl to rotate after the restraint piece is tightly attached to the shoulder of the passenger until the pawl is inserted into the teeth of the ratchet wheel so as to realize mechanical locking.

In one embodiment, the second driving member is a second motor, and the locking module further includes: and the pushing piece is arranged on the output end of the second driving piece and is used for rotating along a first direction under the driving of the second driving piece so as to push the pawl to rotate until the pawl is inserted into the teeth of the ratchet wheel.

In one embodiment, the control module is further configured to control the second driving member to drive the pushing member to rotate in a second direction when the force born by the output end of the first driving member is greater than a force limit value or the collision is over, so that the pawl is disengaged from the teeth of the ratchet wheel;

wherein the second direction is opposite to the first direction.

In one embodiment thereof, the vehicle occupant restraint device further includes: the passenger state sensing module is used for acquiring and sending the riding state of the passenger to the control module;

the control module is used for controlling the first driving piece to drive the restraining piece to move through the rotating piece when the riding state of the passenger changes in the normal running process of the target vehicle, so that a preset distance exists between the restraining piece and the shoulder of the passenger.

A vehicle seat assembly comprising a seat and a vehicle occupant restraint as claimed in any one of the preceding claims;

the rotating member of the restraint module of the vehicle occupant restraint device is provided on the seat.

A vehicle comprising a vehicle seat assembly as described above.

According to the vehicle occupant restraining device, the vehicle seat assembly and the vehicle, the restraining piece of the vehicle occupant restraining device can be tightly attached to the shoulder of an occupant, namely, the firmest part of a human body is restrained, so that minimal damage can be generated when a collision occurs, the restraining effectiveness is verified through sandbox experiments and model simulation, compared with the traditional safety belt and safety airbag restraint, the vehicle occupant restraining device has a better protection effect on the occupant, the deformation of the chest of the occupant can be improved, the chest stress is more uniform compared with the safety belt, and the trend of the diving motion of the occupant is greatly reduced; in addition, the control module controls the first driving piece to drive the rotating piece to rotate when the target vehicle has collision risk, and then drives the restraining piece to move until the restraining piece is tightly attached to the shoulder of the passenger in the target vehicle, so that the restraint of the passenger is realized, the restraint is not required to be applied to the passenger at the whole moment in the driving process, the restraint is applied to the passenger at the proper moment, and the driving comfort of the passenger and the pertinence and the sufficiency of protection are greatly improved.

Drawings

FIG. 1 is a block diagram of a vehicle occupant restraint device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a vehicle seat according to an embodiment of the present invention;

FIG. 3 is a schematic view of a partial structure of a vehicle occupant restraint device according to an embodiment of the present invention;

fig. 4 is a flowchart of the operation of the vehicle occupant restraint device according to an embodiment of the present invention.

Wherein, the reference numerals in the drawings are as follows:

100. an environment sensing module; 200. a risk pre-judging module; 300. a control module; 400. a constraint module; 410. a first driving member; 411. a coupling; 420. a rotating member; 421. a lower rotating member; 422. an upper rotating member; 423. a first lower shaft; 424. an upper shaft; 430. a restraint; 510. a lower mounting seat; 511. a first mounting plate; 512. a first support plate; 513. a second support plate; 520. an upper mounting seat; 521. a second mounting plate; 522. a third support plate; 600. a locking module; 610. a second driving member; 620. a ratchet wheel; 630. a pawl; 640. a pushing member; 650. a second lower shaft; 700. an occupant state sensing module; 800. and (5) a seat.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1 and 2, an embodiment of the present invention provides a vehicle occupant restraint apparatus including: the environment sensing module 100, the risk prejudging module 200, the control module 300 and the restraint module 400, the restraint module 400 is for being installed on a seat 800 of a target vehicle and includes: a first driving member 410, a rotating member 420, and a restraining member 430; the environment sensing module 100 is configured to acquire and send road environment information to the risk pre-judging module 200; the risk pre-judging module 200 is configured to judge whether the target vehicle has a collision risk according to the road environment information, and then send the judgment result to the control module 300; the control module 300 is configured to control the first driving member 410 to drive the rotating member 420 to rotate when the target vehicle is at risk of collision, and further drive the restraining member 430 to move until the restraining member 430 is tightly fitted to the shoulder of the occupant in the target vehicle.

The number of the first driving member 410, the rotating member 420 and the restraining member 430 may be 1 or 2. When the number of the restraints 430 is 2, they may be symmetrically distributed on both left and right sides of the vehicle seat 800. The restraining member 430 may be a plate-shaped structure, the restraining member 430 may be coated with a buffer layer, and the material of the buffer layer may be a sponge.

As an example, the environment sensing module 100 may be a camera, a distance sensor, a radar, etc., and may obtain parameters such as a distance between a target vehicle and surrounding obstacles, a speed of the obstacles, and a running direction of the obstacles. The risk pre-judging module can judge whether the target vehicle has collision risk or not in a modeling and calculating mode. The control module 300 is a PLC (Programmable Logic Controller ).

In the vehicle occupant restraining apparatus as described above, the restraining member 430 may be tightly attached to the shoulder of the occupant, i.e., the most firm portion of the human body is restrained, so that minimal damage may be generated when a collision occurs, and the restraining effectiveness is verified by sandbox experiments and model simulation, compared with the conventional seat belt and airbag restraint, the occupant protection effect is better, and not only can the deformation of the chest of the occupant be improved, so that the chest stress is more uniform than that of the seat belt, but also the tendency of the occupant to move downward is greatly reduced; in addition, when the target vehicle has collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and then drives the restraining element 430 to move until the restraining element 430 is tightly attached to the shoulder of the passenger in the target vehicle, so as to realize the restraint of the passenger, and the restraint is not required to be applied to the passenger at all times in the driving process, but is applied to the passenger at the proper time, so that the riding comfort of the passenger and the pertinence and the sufficiency of protection are greatly improved.

As shown in fig. 2, in some embodiments of the invention, the rotator 420 includes: the upper rotating member 422 and the lower rotating member 421 are arranged in parallel along the vertical direction, and the upper rotating member 422 and the lower rotating member 421 are respectively provided with a connecting end and a rotating end which are distributed oppositely; the connection ends of the upper rotating member 422 and the lower rotating member 421 are respectively connected with the upper end and the lower end of the restraining member 430, the rotating end of the upper rotating member 422 is rotatably connected with the seat 200, the rotating end of the lower rotating member 421 is connected with the first driving member 410, and the rotating end of the lower rotating member 421 can drive the rotating end of the upper rotating member 422 to rotate in the rotating process. The rotary member 420 of this structure can increase the strength of the connection with the restraining member 430, and the lower rotary member 421 and the upper rotary member 422 share one first driving member 410, which can simplify the structure of the vehicle occupant restraining device. Of course, in other embodiments of the present invention, the number of the rotating members 420 may be greater than 2, and the plurality of rotating members 420 are arranged in parallel along the vertical direction.

Alternatively, the connection ends of the lower and upper rotating members 421 and 422 may be connected to the restraining members 430, respectively, by means of screws or welding.

Alternatively, as shown in fig. 2, the lower rotating member 421 and the upper rotating member 422 have an upwardly convex arc-shaped rod-like structure when rotated to the horizontal direction. The lower rotating member 421 and the upper rotating member 422 of this type of structure can increase the propagation path of force and can absorb a part of the collision kinetic energy.

On the premise that the rotating member 420 includes an upper rotating member 422 and a lower rotating member 421, as shown in fig. 2, the vehicle occupant restraint apparatus further includes: a lower mount 510 and an upper mount 520, both for fixing to the seat; the first driving member 410 is disposed on the lower mount 510, and the rotating end of the upper rotating member 422 is rotatably disposed on the upper mount 520.

Optionally, as shown in fig. 2, the upper mount 520 includes: the second mounting plate 521 horizontally distributed and the third support plate 522 vertically disposed on the second mounting plate 521; the second mounting plate 521 may be mounted on the headrest portion of the seat 800 by means of screws, welding, or the like, and the rotating end of the upper rotating member 422 may be rotatably provided to the third support plate 522 through the upper shaft 424.

In some embodiments of the present invention, as shown in fig. 2 and 3, the first driving member 410 is a motor, and an output end of the first driving member 410 is connected to the lower rotating member 421. As an example, as shown in fig. 3, the output end of the first driving member 410 is connected to the rotating end of the lower rotating member 421 through the first lower shaft 423. The output end of the first driving member 410 may be connected to the first lower shaft 423 through a coupling 411 shown in fig. 3.

Further, in some embodiments of the present invention, as shown in fig. 1, the vehicle occupant restraint device further includes a locking module 600, as shown in fig. 3, the locking module 600 includes: a second driver 610, a ratchet wheel 620 disposed on the output end of the second driver 610, and a rotatable pawl 630; the control module 300 is also used to control the driver to drive the pawl 630 to rotate after the restraint 430 is in close engagement with the shoulder of the occupant until the pawl 630 is inserted into the teeth of the ratchet wheel 620 to effect mechanical locking. In this way, loosening of the restraining member 430 can be avoided, and the occupant can be restrained effectively on the seat 800 in a collision, so that the occupant is not injured by the inertial movement striking the vehicle interior.

Still further, in some embodiments of the present invention, as shown in fig. 3, the second driving member 610 is a second motor, and the locking module 600 further includes: and a pushing member 640 provided at an output end of the second driving member 610, the pushing member 640 being configured to rotate in a first direction by the driving of the second driving member 610 to thereby push the pawl 630 to rotate until the pawl 630 is inserted into the teeth of the ratchet wheel 620. In this way, it is avoided that the output ends of the second driving member 610 and the first driving member 410 are too close to each other to affect the operation thereof.

Alternatively, the pusher 640 may be in the shape of an elongated strip as shown in fig. 3. The middle portion of the pushing member 640 may be connected to the output end of the second driving member 610 by using a second lower shaft 650 as shown in fig. 3. As shown in fig. 3, the lower mounting seat 510 includes a first mounting plate 511 horizontally distributed, and a first support plate 512 and a second support plate 513 vertically disposed on the first mounting plate 511 and distributed at intervals; the first driving member 410 may be disposed in the first support plate 512 away from the second support plate 513, and the second driving member 610 may be disposed on a wall of the first support plate 512 close to the second support plate 513; the pawl 630 is rotatably disposed on a wall of the second support plate 513 remote from the first support plate 512; the first lower shaft 423 and the second lower shaft 650 are both disposed through the second support plate 513.

Still further, in some embodiments of the present invention, the control module 300 is further configured to control the second driving member 610 to drive the pushing member 640 to rotate in the second direction when the force applied to the output end of the first driving member 410 is greater than the force limit value or the collision is completed, so as to disengage the pawl 630 from the teeth of the ratchet wheel 620; wherein the second direction is opposite to the first direction. In this way, the restraint 430 can be prevented from applying excessive restraining force to the occupant during a collision, and thus injury to the occupant can be avoided, without affecting escape from the seat 800 or occupant and rescue of the rescuer. At this time, after the pawl 630 is disengaged from the teeth of the ratchet 620, the first driver 410 can still apply a restraining force to the occupant via the restraining member 430, so as to slow down the occupant.

In some embodiments of the present invention, as shown in fig. 1, the vehicle occupant restraint device further includes: the passenger state sensing module 700, the passenger state sensing module 700 is used for acquiring and guiding the passenger's sitting state to the control module 300; the control module 300 is used for controlling the first driving member 410 to drive the restraining member 430 to move through the rotating member 420 so that the restraining member 430 has a preset distance from the shoulder of the occupant when the seating state of the occupant is changed during normal running of the target vehicle. When the riding state of the passenger changes, such as article delivery and turning back, the first driving member 410 drives the rotation member 420 to rotate so as to drive the restraint member 430 to move, so that the restraint member 430 keeps a preset distance from the shoulder of the passenger at any time, the passenger is not restrained during normal driving, the comfort of the passenger is ensured, and the passenger can be restrained in time when the vehicle collides.

Alternatively, the occupant condition sensing module 700 may include a camera, a seat cushion pressure sensor, etc. to monitor the occupant's seating condition in real time. The predetermined distance may be 4cm to 6cm, for example, 4cm, 5cm, 6cm, etc.

The following describes the operation mode of the vehicle occupant restraint device as described above with reference to the operation flowchart shown in fig. 4:

(A) Welcome to seat: before the passenger sits on the seat, the first driving piece 410 controls the first lower shaft 423 to rotate, and then controls the lower rotating piece 421 to rotate, and the restraining piece 430 moves upwards along with the upward rotation of the lower rotating piece 421 due to the limitation of the parallel four-bar mechanism so as to be positioned above the seat 800, so that the passenger is not hindered from sitting on the seat;

(B) Close to: after the occupant is seated, detected by the distance sensor at the restraining member 430, the control module 300 causes the first motor to control the first lower shaft 423 to rotate, thereby controlling the lower rotating member 421 to rotate, and the restraining member 430 moves downward along with the downward rotation of the lower rotating member 421, so as to be in front of the body of the occupant and maintain a preset distance from the occupant, thereby not restraining the occupant during normal driving and ensuring occupant comfort;

(C) Follow-up: during normal driving, when the occupant state sensing module 700 provided in the vehicle monitors that the occupant is changed from the normal sitting posture to the action state, such as delivering an article, turning around, the control module 300 causes the first driving member 410 to drive the lower rotating member 421, thereby causing the action of the restraining member 430 with the occupant to follow and maintaining a preset distance from the occupant at a time, and causing the restraining member 430 to return after the occupant returns to the normal sitting posture;

(D) And (3) judging the running risk: in the normal driving process, the risk of driving is monitored at any time through the environment sensing module 100 and the risk prejudging module 200 in the automatic driving and the Internet of vehicles, and if the risk of collision is found, a collision early warning signal is sent to the control module 300;

(E) Tightening and locking: when the collision early warning signal occurs, the control module 300 causes the first motor to control the lower rotating member 421 to rotate, so that the restraining member 430 in front of the occupant is further moved downward until it is brought into close contact with the shoulder of the occupant. At the same time, the control module 300 causes the second driver 610 to control the pawl 630 to rotate until the ratchet 620 is inserted, thereby achieving a mechanical lock and preventing the constraint 430 from loosening. At this time, the occupant is restrained on the seat 800 in the collision, and will not be injured by the inertial movement striking the vehicle interior;

(F) Force limiting: the force limiting value of the restraint device is set according to the damage tolerance of the passenger, when the force in the second driving piece 610 reaches the force limiting value, the control module 300 enables the second driving piece 610 to control the pawl 630 to rotate until being pulled out from the ratchet wheel 620, so that mechanical unlocking is realized, the restraint device enters a follow-up mode, but a first motor can apply a certain force to the lower rotating piece 421 in the follow-up process of the stage, so that the restraint piece 430 still applies a certain restraint force to the passenger when moving along with the passenger, and the passenger is decelerated;

(G) Releasing restraint, and leaving the passenger seat: when the normal driving or collision is detected, if the ratchet 620 is in a mechanically locked state, the pawl 630 needs to be controlled by the second motor to rotate until the pawl 620 is separated from the ratchet, so that the locking is released, and then the first lower shaft 423 is controlled by the first driving member 410, so that the lower rotating member 421 is controlled, and the restraining member 430 is separated from the occupant, so that the occupant is not influenced from leaving the seat or escaping of the occupant and rescuing of the rescue personnel.

Another embodiment of the present invention provides a vehicle seat assembly, as shown in fig. 1, comprising a seat 800 and a vehicle occupant restraint as defined in any one of the above; the rotator 420 of the restraint module 400 of the vehicle occupant restraint device is disposed on the seat 800.

As described above, the restraining member 430 of the vehicle occupant restraining device can be tightly fitted to the shoulder of the occupant, i.e., the most firm part of the human body is restrained, so that minimal injury can be generated when a collision occurs, and the restraining effectiveness is verified through sandbox experiments and model simulation, compared with the conventional seat belt and air bag restraint, the occupant protection effect is better, and not only can the deformation of the chest of the occupant be improved, so that the chest stress is more uniform than that of the seat belt, but also the trend of the diving movement of the occupant is greatly reduced; in addition, when the target vehicle has collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and then drives the restraining element 430 to move until the restraining element 430 is tightly attached to the shoulder of the passenger in the target vehicle, so as to realize the restraint of the passenger, and the restraint is not required to be applied to the passenger at all times in the driving process, but is applied to the passenger at the proper time, so that the riding comfort of the passenger and the pertinence and the sufficiency of protection are greatly improved.

Another embodiment of the present invention provides a vehicle comprising a vehicle seat assembly as described above.

As one example, the vehicle is an unmanned vehicle.

As described above, the restraining member 430 of the vehicle occupant restraining apparatus can be tightly fitted to the shoulder of the occupant, that is, the most firm portion of the human body is restrained, so that minimal damage can be generated when a collision occurs, and the restraining effectiveness is verified through sandbox experiments and model simulation, compared with the conventional seat belt and airbag restraint, the occupant protection effect is better, and not only can the deformation of the chest of the occupant be improved, so that the chest stress is more uniform than that of the seat belt, but also the tendency of the occupant to move downward is greatly reduced; in addition, when the target vehicle has collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and then drives the restraining element 430 to move until the restraining element 430 is tightly attached to the shoulder of the passenger in the target vehicle, so as to realize the restraint of the passenger, and the restraint is not required to be applied to the passenger at all times in the driving process, but is applied to the passenger at the proper time, so that the riding comfort of the passenger and the pertinence and the sufficiency of protection are greatly improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A vehicle occupant restraint device, characterized by comprising: the system comprises an environment sensing module, a risk prejudging module, a control module, a constraint module and a locking module;

the restraint module is used for being installed on a seat of a target vehicle and comprises a first driving piece, a rotating piece and a restraint piece; the rotating member includes: the upper rotating piece and the lower rotating piece are distributed in parallel along the vertical direction, and are respectively provided with a connecting end and a rotating end which are distributed relatively; the connecting ends of the upper rotating piece and the lower rotating piece are respectively connected with the upper end and the lower end of the constraint piece, the rotating end of the upper rotating piece is used for being rotatably connected with the seat, the rotating end of the lower rotating piece is connected with the first driving piece, and the rotating end of the lower rotating piece can drive the rotating end of the upper rotating piece to rotate in the rotating process; when the lower rotating piece and the upper rotating piece rotate to the horizontal direction, the lower rotating piece and the upper rotating piece are of arc rod-shaped structures protruding upwards; the output end of the first driving piece is connected with the lower rotating piece;

the locking module includes: the second driving piece, the ratchet wheel, the rotatable pawl and the pushing piece are arranged on the output end of the first driving piece; the control module is also used for controlling the second driving piece to drive the pawl to rotate after the restraint piece is tightly attached to the shoulder of the passenger until the pawl is inserted into the teeth of the ratchet wheel to realize mechanical locking, the pushing piece is arranged at the output end of the second driving piece and is used for rotating along a first direction under the driving of the second driving piece so as to push the pawl to rotate until the pawl is inserted into the teeth of the ratchet wheel;

2. The vehicle occupant restraint device according to claim 1, characterized in that the vehicle occupant restraint device further comprises: the lower mounting seat and the upper mounting seat are both used for being fixed on the seat;

3. The vehicle occupant restraint device of claim 1 wherein the first drive member is an electric motor.

4. The vehicle occupant restraint device according to claim 1, wherein the second driving member is a second motor.

5. The vehicle occupant restraint device of claim 1 wherein the control module is further configured to control the second driver to drive the ejector to rotate in a second direction to disengage the pawl from the ratchet teeth when the force experienced by the output end of the first driver is greater than a force limit or the collision is over;

wherein the second direction is opposite to the first direction.

6. The vehicle occupant restraint device according to claim 1, characterized in that the vehicle occupant restraint device further comprises: the passenger state sensing module is used for acquiring and sending the riding state of the passenger to the control module;

7. A vehicle seat assembly comprising a seat and the vehicle occupant restraint of any one of claims 1-6;

8. A vehicle comprising the vehicle seat assembly of claim 7.