CN114954341A

CN114954341A - Vehicle occupant restraint device, vehicle seat assembly and vehicle

Info

Publication number: CN114954341A
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: 2022-08-30
Anticipated expiration: 2041-02-26
Also published as: CN114954341B

Abstract

The invention relates to a vehicle occupant restraint device, a vehicle seat assembly and a vehicle. The vehicle passenger restraint device comprises an environment sensing module, a risk pre-judging module, a control module and a restraint module, wherein the restraint module comprises a first driving piece, a rotating piece and a restraint piece; the environment perception module is used for acquiring road environment information; the risk pre-judging module is used for judging whether the target vehicle has collision risk 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 restraint piece to move until the restraint piece is tightly attached to the shoulder of an occupant in the target vehicle. The vehicle passenger restraint device can improve the deformation of the chest of a passenger, so that the chest is more uniformly stressed compared with a safety belt, the trend of the descending movement of the passenger is greatly reduced, the passenger is not required to be restrained at the full time in the driving process, but the passenger is restrained at a proper time, and the driving comfort of the passenger is greatly improved.

Description

Vehicle occupant restraint device, vehicle seat assembly and vehicle

Technical Field

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

Background

In the field of passive safety of automobiles, a well-matched passenger restraint system can greatly reduce the degree of damage of passengers and reduce the passenger casualty rate in the event of an accident. At present, most vehicle restraint systems assembled on vehicles mainly comprise a three-point safety belt, an air bag and a seat, and although the vehicle restraint systems can achieve a good restraint and protection effect, the three-point safety belt not only can cause over-concentrated chest restraint force to cause thoracic cavity deformation and increase rib fracture risk, but also can cause dive movement of a passenger in a restraint process, and a belly belt of the safety belt can invade into the belly of the passenger in the dive movement to cause belly injury.

In order to solve the problem that the three-point type safety belt causes the over-concentration of the chest restraint force, many automobile manufacturers including ford, meisseldesbenz, japan honda, etc. have developed an air bag type safety belt, which acts on the principle similar to an air bag, and expands the original belt shape of the safety belt into a column shape by fast inflation during the collision, thereby increasing the contact area between the safety belt and the chest of the passenger during the collision and further reducing the damage of the concentrated load of the safety belt to the chest structure of the passenger. In addition, in order to solve the problem that the webbing belt intrudes into the abdomen of the passenger due to the dive of the passenger, many people have also studied a device for preventing the dive of the passenger, which restricts forward and downward movement of the hips and buttocks of the passenger at the time of a collision, and embodiments thereof include adding a reinforcement structure to the front portion of the seat cushion, or changing the rigidity of the structure of the seat cushion portion, or the like.

The related art mentioned above 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 involves gas inflation, the seat belt expands, and the like, and there is a high possibility that the seat belt airbag is expanded in time or at a wrong time, causing injury to the occupant. But inflation formula safety belt has reduced the reuse rate of safety belt simultaneously, has promoted the cost that the safety belt was changed. The anti-dive mechanism also presents a danger caused by the invasion of the belly band of the safety belt. The above techniques are therefore essentially all due to the lack of restraint configuration of the harness.

In addition, in an automatic driving automobile, due to the fact that the space in the automobile is insufficient and the existing automobile collision early warning function cannot accurately early warn multidirectional collision, the existing restraint system with the safety belt matched with the safety air bag needs to restrain passengers at all times, and the driving comfort of the passengers is greatly reduced.

Disclosure of Invention

In view of the above, it is desirable to provide a vehicle occupant restraint device, a vehicle seat assembly, and a vehicle that address the above-described problems.

A vehicle occupant restraint apparatus, comprising: the system comprises an environment sensing module, a risk pre-judging 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 perception module is used for acquiring and sending road environment information to the risk pre-judging 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 judgment 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 restraint piece to move until the restraint piece is tightly attached to the shoulder of an occupant in the target vehicle.

In one embodiment thereof, the rotating member comprises: the upper rotating piece and the lower rotating piece are distributed in parallel along the vertical direction and are provided with connecting ends and rotating ends which are distributed oppositely;

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 restraint 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.

In one embodiment, when the rotating body rotates to the horizontal direction, the lower rotating body and the upper rotating body are of arc-shaped rod-shaped structures protruding upwards.

In one embodiment thereof, the vehicle occupant restraint apparatus further comprises: 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 of the embodiments, the vehicle occupant restraint apparatus further includes a lock module including: the ratchet wheel and the 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: the pushing piece is arranged on the output end of the second driving piece and 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 element to drive the pushing element to rotate in a second direction when the output end of the first driving element is subjected to a force greater than a 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 the first direction.

In one embodiment thereof, the vehicle occupant restraint apparatus further comprises: 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 restraint 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 the restraint piece and the shoulder of the passenger have a preset distance.

A vehicle seat assembly comprising a seat and a vehicle occupant restraint apparatus of any of the preceding claims;

the rotary member of the restraint module of the vehicle occupant restraint apparatus is provided on the seat.

A vehicle comprising the vehicle seat assembly described above.

According to the vehicle occupant restraint device, the vehicle seat assembly and the vehicle, the restraint part of the vehicle occupant restraint device can be tightly attached to the shoulder of an occupant, namely, the firmest part of a human body is restrained, so that the minimum injury can be generated when a collision occurs, and the restraint effectiveness is verified through sandbox experiments and model simulation; 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 further drives the restraint piece to move until the restraint piece is tightly attached to the shoulder of a passenger in the target vehicle, so that the restraint on the passenger is realized, the passenger does not need to be restrained at the full time in the driving process, but is restrained at a proper time, and the driving comfort and the protection pertinence and sufficiency of the passenger are greatly improved.

Drawings

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

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

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

fig. 4 is a flowchart illustrating an operation of a vehicle occupant restraint apparatus 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. pushing the piece; 650. a second lower shaft; 700. an occupant state sensing module; 800. a chair.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique 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 anticipation module 200, the control module 300, and the restraint module 400, the restraint module 400 configured to be mounted on a seat 800 of a target vehicle and including: a first driving member 410, a rotating member 420 and a restraining member 430; the environment sensing module 100 is configured to obtain and send road environment information to the risk pre-judging module 200; the risk pre-judging module 200 is configured to judge whether a target vehicle has a collision risk according to the road environment information, and then send a judgment result to the control module 300; the control module 300 is configured to control the first driving element 410 to drive the rotating element 420 to rotate when the target vehicle is in collision risk, so as to drive the restraining element 430 to move until the restraining element 430 is tightly attached to the shoulder of the occupant in the target vehicle.

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

As an example, the environment sensing module 100 may be formed by a camera, a distance sensor, a radar, and the like, and may acquire parameters such as a distance between the target vehicle and a surrounding obstacle, a speed of the obstacle, and a moving direction of the obstacle. The risk pre-judging module can judge whether the target vehicle has collision risk or not through modeling and calculation. The control module 300 is a PLC (Programmable Logic Controller).

According to the vehicle occupant restraint device, the restraint piece 430 can be tightly attached to the shoulder of an occupant, namely, the firmest part of a human body is restrained, so that the minimum damage can be generated when collision occurs, and the restraint effectiveness is verified through sandbox experiments and model simulation, compared with the restraint of a traditional safety belt and a safety air bag, the vehicle occupant restraint device has a better occupant protection effect, the deformation of the chest of the occupant can be improved, the stress on the chest is more uniform compared with that of the safety belt, and the tendency of the dive movement of the occupant is greatly reduced; in addition, when the target vehicle has a collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and further 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 that the passenger is restrained, the passenger does not need to be restrained at the full time in the driving process, but is restrained at a proper time, and the driving comfort and the protection pertinence and sufficiency of the passenger are greatly improved.

As shown in fig. 2, in some embodiments of the present invention, the rotating member 420 includes: the upper rotating member 422 and the lower rotating member 421 are distributed in parallel along the vertical direction, and the upper rotating member 422 and the lower rotating member 421 are both provided with a connecting end and a rotating end which are distributed oppositely; the connecting ends of the upper rotating piece 422 and the lower rotating piece 421 are respectively connected with the upper end and the lower end of the constraint piece 430, the rotating end of the upper rotating piece 422 is used for being rotatably connected with the seat 200, the rotating end of the lower rotating piece 421 is connected with the first driving piece 410, and the rotating end of the lower rotating piece 421 can drive the rotating end of the upper rotating piece 422 to rotate in the rotating process. The rotating member 420 having such a structure can increase the coupling strength with the restraint member 430, and the lower rotating member 421 and the upper rotating member 422 share the first driving member 410, thereby simplifying the structure of the vehicle occupant restraint apparatus. 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 in the vertical direction.

Alternatively, the connecting ends of the lower rotating member 421 and the upper rotating member 422 may be connected to the constraining member 430 by screws or welding.

Alternatively, as shown in fig. 2, when rotated to the horizontal direction, the lower rotating member 421 and the upper rotating member 422 are arc-shaped rod-shaped structures protruding upward. The lower rotating member 421 and the upper rotating member 422 of the structure can increase the transmission path of force and can absorb part of collision kinetic energy.

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

Alternatively, as shown in fig. 2, the upper mount 520 includes: a second mounting plate 521 horizontally distributed and a third support plate 522 vertically arranged 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 is rotatably provided on the third support plate 522 via an 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 rotation end of the lower rotating member 421 through a first lower shaft 423. Wherein the output end of the first driving member 410 can be connected with the first lower shaft 423 through the coupling 411 shown in fig. 3.

Further, in some embodiments of the present invention, as shown in fig. 1, the vehicle occupant restraint apparatus further includes a lock module 600, as shown in fig. 3, the lock module 600 including: a second driving member 610, a ratchet 620 and a rotatable pawl 630 arranged on the output end of the second driving member 610; the control module 300 is further configured to control the driver to drive the pawl 630 to rotate until the pawl 630 is inserted into the teeth of the ratchet 620 to achieve mechanical locking after the restraint 430 is tightly engaged with the shoulder of the occupant. In this way, the restraint 430 can be prevented from loosening, and the occupant can be effectively restrained on the seat 800 in a collision, so that the occupant is not injured by the inertial motion striking the interior of the automobile.

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: an ejector 640 is disposed on the output end of the second driving member 610, and the ejector 640 is configured to rotate in a first direction under the driving of the second driving member 610 to push the pawl 630 to rotate until the pawl 630 is inserted into the teeth of the ratchet wheel 620. In this way, the output ends of the second driving element 610 and the first driving element 410 are prevented from being close to each other and affecting the operation of each other.

Alternatively, the pusher 640 is elongated in shape as shown in fig. 3. The middle portion of the ejector 640 may be connected to the output end of the second driving member 610 using a second lower shaft 650 as shown in fig. 3. As shown in fig. 3, the lower mounting base 510 includes a first mounting plate 511 horizontally distributed, and a first supporting plate 512 and a second supporting plate 513 vertically arranged on the first mounting plate 511 and spaced apart from each other; 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 adjacent to the second support plate 513; the pawl 630 is rotatably provided on a wall of the second support plate 513 away from the first support plate 512; the first lower shaft 423 and the second lower shaft 650 are disposed through the second supporting plate 513.

Further, in some embodiments of the present invention, the control module 300 is further configured to control the second driving element 610 to drive the pushing element 640 to rotate in the second direction when the output end of the first driving element 410 is subjected to a force greater than a limit value or the collision is over, 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 exerting excessive restraint force on the passenger during a collision, so that the passenger can be prevented from being injured, and the passenger can be prevented from leaving the seat 800 or escaping from the seat and rescuing people. It should be noted that after the pawl 630 disengages from the teeth of the ratchet wheel 620, the first driver 410 is still able to exert a certain amount of restraint force on the occupant by the restraint 430 during operation, thereby decelerating the occupant.

In some embodiments of the present invention, as shown in fig. 1, the vehicle occupant restraint apparatus further includes: the occupant state sensing module 700, the occupant state sensing module 700 is used for acquiring and sending the occupant sitting state to the control module 300; the control module 300 is configured to control the first driver 410 to drive the restraint 430 to move via the rotation member 420 such that the restraint 430 is spaced a predetermined distance from the shoulder of the occupant when the seating state of the occupant is changed during normal driving of the target vehicle. When the riding state of the passenger changes, such as goods delivery and turning back, the first driving member 410 drives the turning member 420 to turn and further drives the restraining member 430 to move, so that the restraining member 430 keeps a preset distance from the shoulder of the passenger at any time, and thus, the passenger is not restrained during normal driving, the comfort of the passenger is ensured, and the passenger can be restrained in time when a vehicle collision occurs.

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

The following description is made with respect to the operation mode of the vehicle occupant restraint apparatus as described above with reference to the operation flowchart shown in fig. 4:

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

(B) approaching: when the occupant is seated, after the occupant is detected to be seated by the distance sensor at the restraint member 430, the control module 300 enables the first motor to control the first lower shaft 423 to rotate, so as to control the lower rotating member 421 to rotate, and the restraint member 430 moves downwards along with the downward rotation of the lower rotating member 421, so as to be positioned in front of the body of the occupant and keep a preset distance from the occupant, so that the occupant is not restrained during normal driving, and the comfort of the occupant is ensured;

(C) following: in the normal driving process, when the passenger state sensing module 700 arranged in the vehicle detects that the passenger changes from the normal sitting position to the action state, such as article delivery and turning back, the control module 300 enables the first driving part 410 to drive the lower rotating part 421, so that the restraining part 430 follows the action of the passenger and keeps a preset distance with the passenger at the moment, and the restraining part 430 is reset after the passenger returns to the normal sitting position;

(D) judging the driving risk: in the normal driving process, the risk of driving is constantly monitored through the environment sensing module 100 and the risk pre-judging module 200 in the automatic driving and vehicle networking, 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 warning signal occurs, the control module 300 controls the lower rotating member 421 to rotate by the first motor, so that the restraint member 430 in front of the occupant further moves downwards until the restraint member is tightly attached to the shoulder of the occupant. At the same time, the control module 300 enables the second driving element 610 to control the pawl 630 to rotate until the ratchet wheel 620 is inserted, so that the mechanical locking is realized, and the restraint member 430 is prevented from loosening. At this time, the occupant is restrained on the seat 800 during the collision, and will not be injured by the inertial movement hitting the interior of the automobile;

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

(G) releasing the restraint, and enabling the passenger to be out of the seat: when the normal driving or the collision is detected to be finished, if the ratchet wheel 620 is in the mechanical locking state, the pawl 630 is controlled to rotate by the second motor until the pawl leaves the ratchet wheel 620, the locking is released, then the first driving piece 410 controls the first lower shaft 423, and further the lower rotating piece 421 is controlled, so that the restraint piece 430 leaves the passenger, and the escape and rescue of the passenger can not be influenced.

Another embodiment of the present invention provides a vehicle seat assembly, as shown in fig. 1, including a seat 800 and a vehicle occupant restraint device as described in any one of the above; the rotary member 420 of the restraint module 400 of the vehicle occupant restraint device is provided on the seat 800.

In the vehicle seat assembly, the restraint piece 430 of the vehicle occupant restraint device can be tightly attached to the shoulder of the occupant, namely, the firmest part of the human body is restrained, so that the minimum injury can be generated when a collision occurs, and the restraint effectiveness is verified through sandbox experiments and model simulation; in addition, when the target vehicle has a collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and further 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 that the passenger is restrained, the passenger does not need to be restrained at the full time in the driving process, but is restrained at a proper time, and the driving comfort and the protection pertinence and sufficiency of the passenger are greatly improved.

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

As one example, the vehicle is an unmanned vehicle.

In the vehicle, the restraint piece 430 of the vehicle occupant restraint device can be tightly attached to the shoulder of the occupant, namely, the firmest part of the human body is restrained, so that the minimum damage can be generated when a collision occurs, and the restraint effectiveness is verified through sandbox experiments and model simulation; in addition, when the target vehicle has a collision risk, the control module 300 controls the first driving element 410 to drive the rotating element 420 to rotate, and further 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 that the passenger is restrained, the passenger does not need to be restrained at the full time in the driving process, but is restrained at a proper time, and the driving comfort and the protection pertinence and sufficiency of the passenger are greatly improved.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A vehicle occupant restraint apparatus characterized by comprising: the system comprises an environment sensing module, a risk pre-judging 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;

2. The vehicle occupant restraint apparatus according to claim 1, wherein the rotation member includes: the upper rotating piece and the lower rotating piece are distributed in parallel along the vertical direction and are provided with connecting ends and rotating ends which are distributed oppositely;

3. The vehicle occupant restraint apparatus according to claim 2, wherein the lower and upper rotating members are of an upwardly-projecting curved rod-like structure when rotated to the horizontal direction.

4. The vehicle occupant restraint apparatus according to claim 2, further comprising: the lower mounting seat and the upper mounting seat are both used for being fixed on the seat;

5. The vehicle occupant restraint apparatus of claim 2, wherein the first driving member is a motor, and an output end of the first driving member is connected to the lower rotating member.

6. The vehicle occupant restraint apparatus according to claim 5, further comprising a lock module that includes: the second driving piece, a ratchet wheel and a rotatable pawl are arranged on the output end of the second driving piece;

7. The vehicle occupant restraint apparatus of claim 6, wherein the second driver is a second motor, the latch module further comprising: the pushing piece is arranged on the output end of the second driving piece and 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.

8. The vehicle occupant restraint apparatus of claim 7, wherein the control module is further configured to control the second driving member to drive the pushing member to rotate in the second direction to disengage the pawl from the teeth of the ratchet wheel when the output end of the first driving member is subjected to a force greater than a limit value or the collision is over;

wherein the second direction is opposite the first direction.

9. The vehicle occupant restraint apparatus according to claim 1, further comprising: the passenger state sensing module is used for acquiring and sending the riding state of the passenger to the control module;

10. A vehicle seat assembly, characterized in that it comprises a seat and a vehicle occupant restraint device according to any one of claims 1-9;

11. A vehicle comprising the vehicle seat assembly of claim 10.