Safety guard and control method thereof, vehicle

Abstract

The application provides a safety protection device, a control method thereof and a vehicle. The safety protection device vehicle comprises: a buffer air cushion, comprising an air cushion body arranged on a backrest of a first seat and configured to be capable of expanding or contracting towards a rear space of the first seat; a safety airbag, comprising a plurality of airbags arranged on the backrest of the first seat and configured to have a contracted state and an expanded state; and a control unit configured to, in a case where a second seat carries a child, control the buffer air cushion to expand and cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat; and in a case where the vehicle collides and the child is separated from the second seat under the action of inertia, control the plurality of airbags to expand, a plurality of protection cavities are formed when the plurality of airbags expand, and the plurality of protection cavities and the backrest of the first seat form a first containing space to constrain the child in the first containing space; wherein the second seat is located at the rear of the first seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, and more particularly to a safety protection device, a control method thereof, and a vehicle. BACKGROUND

[0002] In the scenario of a whole family traveling together, when a child safety seat is not installed or the child does not want to sit in the safety seat, people generally hold the child or let the child sit alone on the rear seat, or the child will play on the rear seat floor. In the above scenario, the personal safety of the child will be difficult to guarantee; during the driving of the vehicle, the child playing on the rear seat will also hit the backrest of the front seat due to the shaking of the vehicle body, causing certain harm.

[0003] Therefore, it is urgent to provide a protection device to protect the safety of a child when the child does not ride in a safety seat and reduce harm. SUMMARY

[0004] The present application mainly provides a safety protection device, a control method thereof, and a vehicle, and the following introduces each aspect related to the embodiments of the present application.

[0005] In a first aspect, a safety protection device is provided, applied to a vehicle, and includes: a buffer air cushion including an air cushion body arranged on a backrest of a first seat, the air cushion body being configured to be able to expand or contract toward a rear space of the first seat; a safety airbag including a plurality of airbags arranged on the backrest of the first seat, the plurality of airbags being configured to have a contracted state and an expanded state; and a control unit configured to, in a case where a second seat carries a child, control the buffer air cushion to expand and cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat, and in a case where the vehicle collides and the child is separated from the second seat under the action of inertia, control the plurality of airbags to expand, the plurality of airbags forming a plurality of protection cavities when expanding, the plurality of protection cavities and the backrest of the first seat forming a first containing space to constrain the child in the first containing space; wherein the second seat is located at the rear of the first seat.

[0006] According to the above technical means, by arranging the safety protection device on the backrest of the first seat, the combination of the buffer air cushion and the safety airbag reduces the impact force of the child not riding in the safety seat on the backrest of the front seat when the vehicle collides, and provides an additional protection space on the back of the front seat after the child flies out from the rear seat, and the child is constrained in the containing space formed by the safety airbag, thereby reducing accidental harm to the child.

[0007] In some embodiments, the buffer air cushion further comprises a first inflating unit connected with the air cushion body and the control unit; the control unit is further configured to: control the first inflating unit to inflate the air cushion body in response to a first control signal; or control the first inflating unit to inflate the air cushion body in response to the vehicle being in a collision and the child being separated from the second seat under the action of inertia; wherein the first control signal is a control signal sent by a driver of the vehicle.

[0008] According to the above technical means, the buffer air cushion can be inflated according to the control of the driver or automatically inflated when the vehicle collides, thereby enhancing the flexibility and practicality of the buffer air cushion and improving the protection effect of the safety protection device.

[0009] In some embodiments, the safety airbag further comprises a second inflating unit connected with the control unit; the plurality of airbags comprises: a first airbag arranged at an upper part of the backrest in the height direction of the first seat, the first airbag being arranged to expand in the direction towards the second seat when inflated to form a first protection chamber; two second airbags arranged symmetrically on the left and right sides of the backrest in the width direction of the first seat, the two second airbags being arranged to expand in the direction towards the second seat from the left and right sides of the backrest of the first seat respectively when inflated to form two second protection chambers; the first airbag and the two second airbags are independently connected with the second inflating unit respectively; and the control unit is configured to control the second inflating unit to inflate the plurality of airbags.

[0010] According to the above technical means, the safety airbag is arranged to comprise a plurality of airbags, which form a plurality of protection chambers when expanded, thereby providing more comprehensive protection for the child. Meanwhile, the inflation of each airbag is independently controlled by the second inflating unit, thereby improving the reliability and adaptability of the safety protection device.

[0011] In some embodiments, the second airbag comprises a first airbag and a second airbag, the first airbag and the second airbag are arranged in an L shape, the extension direction of the first airbag is consistent with the height direction of the vehicle, the extension direction of the second airbag is consistent with the width direction of the vehicle, and the second airbag is located below the first airbag in the height direction; and the control unit is further configured to: control the second inflating unit to inflate the first airbag and the two first airbags when the vehicle is in a collision and the child is separated from the second seat under the action of inertia; and control the second inflating unit to inflate the two second airbags when the child collides with the backrest of the first seat.

[0012] According to the above technical means, the second airbag is arranged to have a first airbag and a second airbag, and the inflation sequence and mode of the first airbag and the second airbag are controlled, thereby enabling the safety airbag to more accurately respond to the movement and collision of the child and providing more effective protection.

[0013] In some embodiments, the control unit is further configured to control the second inflating unit to inflate the two second airbags to different inflation amounts according to the position of the child on the second seat.

[0014] According to the above technical means, the inflation amounts of the two airbags are adjusted according to the position of the child, so that the wrapping space formed between the airbags can more accurately adapt to the position and posture of the child, thereby improving the effectiveness of the safety protection device.

[0015] In a second aspect, a control method of a safety protection device is provided. The safety protection device is applied to a vehicle. The safety protection device includes a buffer air cushion including an air cushion body arranged on a backrest of a first seat, the air cushion body being configured to be able to expand or contract towards a rear space of the first seat; and a safety airbag including a plurality of airbags arranged on the backrest of the first seat, the plurality of airbags being configured to have a contracted state and an expanded state. The method includes: in a case where a second seat carries a child, controlling the buffer air cushion to expand and cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat; and in a case where the vehicle collides and the child is separated from the second seat under the action of inertia, controlling the plurality of airbags to expand, the plurality of airbags forming a plurality of protection cavities when expanding, the plurality of protection cavities and the backrest of the first seat forming a first containing space to constrain the child in the first containing space; and wherein the second seat is located at the rear of the first seat.

[0016] In some embodiments, the buffer air cushion further includes a first inflating unit connected with the air cushion body and the control unit; and the method further includes: in response to a first control signal, controlling the first inflating unit to inflate the air cushion body; or in response to the vehicle colliding and the child being separated from the second seat under the action of inertia, controlling the first inflating unit to inflate the air cushion body; and wherein the first control signal is a control signal sent by a driver of the vehicle.

[0017] In some embodiments, the airbag further comprises a second inflator unit; the plurality of airbags comprises: a first airbag arranged at an upper portion of the first seat in a height direction of the backrest of the first seat, the first airbag being deployed in a direction towards the second seat when inflated to form a first protection chamber; two second airbags arranged symmetrically at left and right sides of the backrest of the first seat in a width direction of the backrest of the first seat, the two second airbags being independently deployed in a direction towards the second seat from the left and right sides of the backrest of the first seat when inflated to form two second protection chambers; the first airbag and the two second airbags are independently connected with the second inflator unit; the second airbag comprises a first airbag and a second airbag, the first airbag and the second airbag are arranged in an L shape, an extension direction of the first airbag is consistent with the height direction of the vehicle, an extension direction of the second airbag is consistent with the width direction of the vehicle, and the second airbag is below the first airbag in the height direction; the method further comprises: in the case that the vehicle is in a collision and the child is separated from the second seat under the action of inertia, controlling the second inflator unit to inflate the first airbag and the two first airbags; and in the case that the child collides with the backrest of the first seat, controlling the second inflator unit to inflate the two second airbags.

[0018] In some embodiments, the method further comprises: controlling the second inflator unit to control the inflation amount of the two second airbags according to the position of the child on the second seat.

[0019] In a third aspect, a vehicle is provided, comprising: the safety protection device of the first aspect, the first seat, and the second seat, the safety protection device being arranged on a side of the first seat facing the second seat; and wherein the second seat is located behind the first seat. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structural schematic diagram of a safety protection device provided by an embodiment of the present application;

[0021] Figure 2 A schematic diagram of an application scenario of a safety protection device provided by an embodiment of the present application;

[0022] Figure 3 A structural schematic diagram of a buffer air cushion in a contracted state in the safety protection device; Figure 1

[0023] A structural schematic diagram of a buffer air cushion in an inflated and deployed state in the safety protection device; Figure 4 Figure 1 A structural schematic diagram of the second airbag in an inflated and deployed state;

[0024] Figure 5 A structural schematic diagram of the second airbag in a contracted state;

[0025] Figure 6

[0026] ​​Figure 7 Fig. 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application; Figure 1 Fig. 2 is a structural schematic diagram of a safety protection device in a contracted state in Fig. 1;

[0027] Figure 8 Fig. 3 is a schematic flow chart of a method for controlling the safety protection device provided by an embodiment of the present application;

[0028] Figure 9 Fig. 4 is a structural schematic diagram of a vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0029] The present application provides a safety protection device, a control method thereof and a vehicle. The technical solutions of the present application are further specifically explained below through embodiments and in conjunction with the drawings. In the description, identical or similar reference numerals indicate identical or similar components. The following description of the embodiments of the present application is intended to explain the general concept of the present application, and should not be understood as a limitation of the present application.

[0030] Before introducing the technical solutions provided by the embodiments of the present application, the child safety protection device of a vehicle in the related art and the problems thereof are described in detail.

[0031] In a family outing scenario, children (especially infants) will be arranged to sit on a safety seat in the rear row of the vehicle, which can provide safety for children when riding and avoid being thrown out due to inertia when the vehicle is involved in an accident, thereby causing harm. However, when the vehicle is not equipped with a child safety seat or the child does not want to sit on the safety seat, people will generally hold the child or let the child sit alone on the rear seat, or the child will play on the rear seat floor. In the above-mentioned situations, it is difficult to guarantee the safety of the child, especially in a highway environment. Once an accident occurs, it may cause fatal harm; even if no accident occurs, the child playing in the rear seat will be hit by the backrest of the front seat due to the instability of the vehicle body, causing certain harm.

[0032] In some related technologies, a knee airbag and a side airbag are configured in the rear row of the vehicle, which expand and deploy when an accident occurs to provide protection for the rear row of the vehicle. However, such safety protection devices are generally designed according to the body shape and sitting posture of adults, and when the members in the rear row of the vehicle are children, these protection devices may not provide proper safety protection for the children; in some possible cases, the popped airbags may cause secondary harm to the children.

[0033] Therefore, it is urgent to provide a protection device to protect the safety of children when they do not sit on a safety seat and reduce harm.

[0034] In view of the above problems, the embodiments of the present application provide a safety protection device, a control method thereof and a vehicle. The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0035] Figure 1 and Figure 2 is a schematic structural diagram of a safety protection device provided by the embodiments of the present application. The safety protection device is applied to a vehicle, and therefore, in order to facilitate understanding, Figure 2 part of the structure of the vehicle is also shown in

[0036] Figure 1 and Figure 2 The safety protection device 100 in

[0037] The buffer air cushion 110 includes an air cushion body 111 arranged on the backrest 210 of the first seat 200, and the air cushion body 111 is configured to be capable of expanding or contracting towards the rear space of the first seat 200.

[0038] It can be understood that in the embodiments of the present application, the vehicle includes at least two rows of seats. For example, the vehicle can include two rows of seats, and the aforementioned first seat 200 is any one of the front row seats of the vehicle; or the vehicle can also have more than two rows of seats, for example, the vehicle can include three rows of seats, and the first seat 200 can be a front row seat or a middle row seat; in other words, when the vehicle has multiple rows of seats, the first seat 200 can be any one seat except the last row of seats.

[0039] It can also be understood that the vehicle can be any type of vehicle, for example, the vehicle can be a passenger car or a commercial vehicle, wherein the passenger car can include a sedan, a multipurpose vehicle, a sport utility vehicle, etc., and the commercial vehicle can be a passenger vehicle, including a travel bus, a city public bus, a highway bus, and a school bus, etc. The embodiments of the present application do not limit the specific type of the vehicle.

[0040] The aforementioned safety airbag 120 includes a plurality of airbags 121 arranged on the backrest 210 of the first seat 200, and the plurality of airbags 121 are configured to have a contracted state and an expanded state.

[0041] The control unit 130 is configured to, in the case that the second seat carries a child, control the buffer air cushion 110 to expand and cover the backrest 210 of the first seat 200, so as to prevent the child from colliding with the backrest 210 of the first seat 200.

[0042] The second seat is located at the rear of the first seat 200 and adjacent to the first seat 200.

[0043] The control unit 130 in the embodiments of the present application can be a controller specially set for the safety protection device, or can be an existing controller in the vehicle, and the embodiments do not make specific limitation thereon.

[0044] Figure 3 and Figure 4 respectively show schematic diagrams of the buffer air cushion 110 in the deflated state and the inflated state, as Figure 3 and Figure 4 shown, when the buffer air cushion 110 is in the deflated state, the outer surface of the buffer air cushion 110 is attached to the backrest 210 of the first seat 200; when it is in the inflated state, the side of the buffer air cushion 110 away from the first seat 200 extends away from the first seat 200, so that the backrest 210 of the first seat 200 becomes soft. When the child is playing in the back row, if the vehicle body shakes, the inflated buffer air cushion 110 will provide safety protection for the child, avoiding direct contact between the child's body (especially the head) and the hard backrest 210 of the first seat 200, thereby improving safety.

[0045] The control unit 130 is further configured to: in the case that the vehicle is in a collision and the child is separated from the second seat under the action of inertia, control the plurality of air bags 121 to inflate and expand, and when the plurality of air bags 121 inflate and expand, a plurality of protection cavities are formed, which together with the backrest 210 of the first seat 200 form a first containing space to restrain the child in the first containing space.

[0046] It can be understood that when the child is sitting on the seat in the back row of the vehicle or is held by other passengers, if the vehicle is in a frontal collision, the vehicle will suddenly decelerate or stop, and at this time the occupants in the vehicle will still have a tendency to move forward under the action of inertia. For adult passengers, they can be restrained on the seat by the seat belt, thereby avoiding collision with the front seat and ensuring their safety. For children sitting alone in the back row or being held, due to the lack of restraint by the seat belt, they will slide forward under the action of great inertia and collide with the backrest 210 of the front seat.

[0047] As shown in Figure 2 in the technical solution of the present application, the plurality of air bags 121 located on the backrest 210 of the first seat 200 inflate to form a first containing space in the shape of a U, and the child sliding off the second seat is restrained in the first containing space after contacting the backrest 210 of the first seat 200. At the same time, as mentioned above, when the second seat has a child sitting thereon, the buffer air cushion 110 of the backrest 210 of the first seat 200 is in the inflated state, and the buffer air cushion 110 and the plurality of air bags 121 can jointly act to provide all-around protection for the child. In this case, even if a secondary accident occurs, the child can be ensured not to be further injured.

[0048] According to the above technical means, by arranging the safety protection device on the backrest 210 of the first seat 200, and by using the combination of the buffer air cushion 110 and the safety air bag 120, the impact force of the child who does not ride the safety seat on the backrest 210 of the front seat is reduced when the vehicle collides, and the additional protection space is provided on the back of the front seat after the child flies out from the rear seat, the child is restrained in the containing space formed by the safety air bag 120, and the accidental injury to the child is reduced.

[0049] In some embodiments, the aforementioned buffer air cushion 110 further comprises a first inflating unit 112 connected with the air cushion body 111 and the control unit 130.

[0050] The first inflating unit 112 may, for example, be an electric air pump or a gas generator, which is connected with the buffer air cushion 110 through an inflating pipeline and is electrically connected with the control unit 130 to receive the control of the control unit 130.

[0051] The aforementioned control unit 130 is configured to control the first inflating unit 112 to inflate the air cushion body 111 in response to a first control signal.

[0052] The first control signal is a control signal sent by the driver of the vehicle. That is, whether to inflate the air cushion body 111 can be controlled by the driver of the vehicle, for example. When there is a child riding in the rear seat of the vehicle, the driver can send the aforementioned first control signal to the control unit 130 through the interaction with the vehicle. The interaction between the driver and the vehicle may, for example, be that the driver performs a tapping operation on the central control screen of the vehicle, or the driver can also perform voice interaction with the vehicle. The central control system of the vehicle can generate the first control signal according to the operation of the driver, and send the first control signal to the first inflating unit 112, so that the first inflating unit 112 inflates the air cushion body 111. It can also be understood that in the interaction with the vehicle, the driver of the vehicle can also control the inflation speed and the inflation degree of the air cushion body 111.

[0053] As a possible implementation manner, the aforementioned first control signal can also be sent by other functional components in the vehicle. For example, an image recognition device can be arranged in the vehicle, which is configured to collect images including the second seat through a camera, and determine whether there is a child riding on the second seat based on image recognition technology. When it is determined that there is a child riding in the rear seat of the vehicle, the first control signal is generated and sent to the control unit 130, so as to inflate the air cushion body 111.

[0054] The aforementioned control unit 130 is further configured to control the first inflating unit 112 to inflate the air cushion body 111 in response to the vehicle colliding and the child being separated from the second seat under the action of inertia.

[0055] It should be understood that the above operation of the control unit 130 is applied to the case that a child is seated on the second seat and the air cushion body 111 is in the collapsed state. According to the foregoing description, when the vehicle is in a collision, the child seated on the second seat will move along the direction of travel of the vehicle under the action of inertia, and when the vehicle speed is fast, the child in the rear row will impact the back of the front seat at a faster speed, which may cause harm to the life of the child if appropriate safety measures are not taken.

[0056] In the scheme provided in the embodiment of the present application, when the vehicle is in a collision and the child on the second seat is separated from the seat, the first inflating unit 112 is controlled to inflate the air cushion body 111, thereby forming a buffer layer on the backrest 210 of the first seat 200, which can avoid direct contact with the hard seat backrest 210 and reduce the damage caused by impact.

[0057] It can also be understood that the control process in the technical scheme includes the judgment of whether the vehicle is in a collision and the judgment of whether the child is separated from the second seat.

[0058] Firstly, the judgment of whether the vehicle is in a collision can be based on various sensors deployed in the vehicle, for example, a collision sensor provided in the vehicle, which can send a collision signal to the control unit 130 in the vehicle when the vehicle is in a head-on collision; or, an acceleration sensor in the vehicle can also be used, which can determine the state of the vehicle by measuring the acceleration of the vehicle at the moment of collision; or, a radar or camera provided in the vehicle can also be used, for example, a laser radar or millimeter wave radar can be used to determine the running state of the vehicle, or various cameras on the vehicle body can be used to determine the state of the vehicle. It should be understood that the above is only an example, and the embodiment of the present application does not limit the above-mentioned way of determining whether the vehicle is in a collision.

[0059] Secondly, there are many ways to determine whether the child is separated from the second seat, for example, a gravity sensor can be provided on the second seat, and the values collected by the gravity sensor when the child is seated on the second seat and separated from the second seat will be obviously different, so the database collected by the gravity sensor can be used to determine whether the child is separated from the second seat. For example, the image recognition device can also be used, the image of the second seat is collected by the camera, and the image recognition technology is used to determine whether the child is separated from the second seat.

[0060] According to the above technical means, the buffer air cushion 110 can be inflated according to the control of the driver or automatically inflated when the vehicle collides, thereby enhancing the flexibility and practicability of the buffer air cushion 110 and improving the protection effect of the safety protection device.

[0061] In some embodiments, the control unit 130 is further configured to control the air cushion body 111 to deflate in response to a second control signal.

[0062] Similar to the first control signal, the second control signal can also be sent by the driver of the vehicle, for example, when the child in the back row of the vehicle gets off or correctly occupies the safety seat, the second control signal can be sent based on the operation of the driver, so as to control the air cushion body 111 to deflate. Alternatively, the second control signal can also be a control signal generated by the image recognition device mentioned above, for example, when there is no child in the image of the second seat, the second control signal can be generated and sent to the control unit 130, so that the air cushion body 111 returns to the initial state. At this time, the space between the second seat and the backrest 210 of the first seat 200 can be increased.

[0063] In some embodiments, as shown in Figure 1 The safety air bag 120 further comprises a second inflating unit 122 connected with the plurality of air bags 121 and the control unit 130.

[0064] The second inflating unit 122 can be an electric air pump or a gas generator, which is connected with the plurality of air bags 121 through an inflating pipeline and is electrically connected with the control unit 130 to receive the control of the control unit 130.

[0065] As shown in Figure 5 The plurality of air bags 121 comprises a first air bag 1211 and two second air bags 1212. The first air bag 1211 is arranged at the upper part of the backrest 210 of the first seat 200 and is arranged to expand in the direction of the second seat when inflated, thereby forming a first protection chamber. The two second air bags 1212 are symmetrically arranged on the left and right sides of the backrest 210 of the first seat 200 and are arranged to independently expand in the direction of the two seats from the left and right sides of the backrest 210 of the first seat 200 when inflated, thereby forming two second protection chambers.

[0066] The first air bag 1211 and the two second air bags 1212 are independently connected with the second inflating unit 122, and the control unit 130 is configured to control the second inflating unit 122 to inflate the plurality of air bags 121. The control unit 130 is configured to control the order of inflating the plurality of air bags 121 by the second inflating unit 122 and the inflation amount of each air bag.

[0067] According to the above technical means, the airbag 120 is arranged to include a plurality of airbags 121, which form a plurality of protection cavities in the expanded state, providing more comprehensive protection for children. At the same time, the inflation of each airbag is independently controlled by the second inflation unit 122, improving the reliability and adaptability of the safety device.

[0068] In some embodiments, as shown in Figure 5 The second airbag 1212 includes a first airbag 1212A and a second airbag 1212B arranged in an L shape. The extension direction of the first airbag 1212A is consistent with the height direction of the vehicle, and the extension direction of the second airbag 1212B is consistent with the width direction of the vehicle. And along the height direction, the second airbag 1212B is located below the first airbag 1212A.

[0069] The aforementioned control unit 130 is further configured to control the second inflation unit 122 to inflate the first airbag 1211 and the two first airbags 1212A when the vehicle is in a collision and the child is separated from the second seat under the action of inertia.

[0070] When the child collides with the backrest 210 of the first seat 200, the second inflation unit 122 is controlled to inflate the two second airbags 1212B.

[0071] Figure 5 And Figure 6 respectively show two states of the second airbag 1212. Among them, Figure 5 The second airbag 1212B in Figure 6 The two second airbags 1212B in

[0072] Referring to Figure 6 When the vehicle is in a collision, the child on the second seat will first slide out of the seat and move along the direction of travel of the vehicle, at which time the first airbag 1211 and the two first airbags 1212A are ejected, and the child flying out from the back seat will enter the space formed by the first airbag 1211 and the two first airbags 1212A; After that, in order to avoid the child falling out of the airbag wrapping, the two second airbags 1212B can be inflated after the child collides with the backrest 210 of the first seat 200, as shown in Figure 5 After the two second airbags 1212B are inflated, a barrier is formed below the child, providing all-around protection and preventing the child from falling down to the floor of the vehicle and causing secondary injury.

[0073] According to the above technical means, the second air bag 1212 is provided with the first air bag 1212A and the second air bag 1212B, and the inflation sequence and mode of the first air bag 1212A and the second air bag 1212B are controlled, so that the safety air bag 120 can more accurately respond to the movement and collision of the child and provide more effective protection.

[0074] Figure 7 The structure schematic diagram when the foregoing plurality of air bags 121 are in the contracted state is shown, as shown in the figure, Figure 7 When in the contracted state, the foregoing plurality of air bags 121 are located inside the first seat 200 and in the cladding material of the first seat 200; when the vehicle collides, the plurality of air bags 121 are rapidly inflated and expanded under the action of the inflation unit, and are ejected from the backrest 210 under the action of the internal pressure and the breaking of the cladding material of the first seat 200.

[0075] In some embodiments, the control unit 130 is further configured to control the second inflation unit 122 to control the inflation amount and / or the inflation sequence of the two second air bags 1212 according to the sitting position of the child on the second seat.

[0076] It can be understood that when the child is sitting in the rear row of the vehicle, the position of the child is usually not fixed along the width direction of the vehicle. If the sitting position is biased to one side, it cannot be guaranteed that the impact position of the child on the backrest 210 of the first seat 200 is in the middle of the two air bags when the vehicle collides, and in some extreme cases, the plurality of air bags 121 may not be able to wrap the ejected child.

[0077] Therefore, in the embodiments of the present application, the inflation amount of the two second air bags 1212 can be controlled according to the sitting position of the child.

[0078] For example, when the sitting position is on the left side of the second seat, the inflation amount of the right air bag can be controlled to be greater than that of the left air bag when the vehicle collides.

[0079] According to the above technical means, the inflation amount of the two air bags is adjusted according to the sitting position of the child, so that the wrapping area formed between the air bags can more accurately adapt to the position and posture of the child, and the effectiveness of the safety protection device is improved.

[0080] The device embodiments of the present application are described in detail above. Figures 1-7 The method embodiments of the present application will be described in detail below. Figure 8 It should be understood that the description of the method embodiments corresponds to the device embodiments. Therefore, the parts not described in detail can be referred to the foregoing device embodiments.

[0081] Figure 8is a schematic flowchart of a control method of a safety protection device provided by the embodiments of the present application, the safety protection device is applied to a vehicle, which can be the safety protection device described in any of the foregoing embodiments, and includes a buffer air cushion, including an air cushion body arranged on a backrest of a first seat, the air cushion body is configured to be capable of expanding or shrinking towards a rear space of the first seat; and an airbag, including a plurality of airbags arranged on the backrest of the first seat, the plurality of airbags are configured to have a shrunk state and an expanded and unfolded state. Figure 8 The method in the foregoing embodiment includes steps S810-S820.

[0082] In step S810, when a child is buckled in the second seat, the buffer air cushion is controlled to expand and cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat.

[0083] In step S820, when the vehicle is in a collision and the child is separated from the second seat under the action of inertia, the plurality of airbags are controlled to expand and unfold, and a plurality of protection cavities are formed when the plurality of airbags expand and unfold, the plurality of protection cavities and the backrest of the first seat jointly form a first containing space to restrain the child in the first containing space; and the second seat is located at the rear of the first seat.

[0084] In some embodiments, the buffer air cushion further includes a first inflation unit, the first inflation unit is connected with the air cushion body and the control unit. The foregoing control method further includes: in response to a first control signal, controlling the first inflation unit to inflate the air cushion body; or in response to the vehicle being in a collision and the child being separated from the second seat under the action of inertia, controlling the first inflation unit to inflate the air cushion body; and the first control signal is a control signal sent by a driver of the vehicle.

[0085] In some embodiments, the airbag further includes a second inflation unit; the plurality of airbags include: a first airbag arranged at an upper portion in a height direction of the backrest of the first seat, the first airbag is unfolded in a direction towards the second seat when expanded and unfolded to form a first protection cavity; two second airbags arranged symmetrically at left and right sides in a width direction of the backrest of the first seat, the two second airbags are respectively unfolded in a direction towards the second seat from the left and right sides of the backrest of the first seat when expanded and unfolded to form two second protection cavities; the first airbag and the two second airbags are respectively connected with the second inflation unit independently; the second airbag includes a first airbag and a second airbag, the first airbag and the second airbag are arranged in an L shape, an extension direction of the first airbag is consistent with the height direction of the vehicle, an extension direction of the second airbag is consistent with the width direction of the vehicle, and the second airbag is located below the first airbag in the height direction;

[0086] The aforementioned control method also includes: in the event of a vehicle collision and the child being ejected from the second seat due to inertia, controlling the second inflation unit to inflate the first airbag and the two first air bags; and in the event of the child colliding with the back of the first seat, controlling the second inflation unit to inflate the two second air bags.

[0087] In some embodiments, the aforementioned method further includes: controlling the inflation amount of the second inflation unit for the two second airbags according to the position of the child in the second seat.

[0088] This application also provides a vehicle, such as... Figure 9 Figure 9 As shown, the vehicle 900 includes a first seat 910, a second seat 920, and a safety protection device 930. The first seat 910 is located in front of the second seat 920, and the safety protection device 930 is disposed on the side of the first seat 910 facing the second seat 920. This safety protection device can be the safety protection device 100 described in any of the embodiments above.

[0089] In the description of this application, 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., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0092] In the present application, unless specifically defined otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can mean the first feature is directly above or obliquely above the second feature, or simply means the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can mean the first feature is directly below or obliquely below the second feature, or simply means the first feature is horizontally lower than the second feature.

[0093] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0094] The above description is only the preferred embodiment of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A safety protection device applied to a vehicle, characterized in that, The safety protection device includes: The cushioning air cushion includes an air cushion body disposed on the backrest of the first seat, the air cushion body being configured to expand or contract toward the rear space of the first seat. The airbag includes a plurality of airbags disposed on the back of the first seat, the plurality of airbags being configured to have a contracted state and an inflated deployed state; A control unit is configured to, when a child is seated in the second seat, control the inflation of the cushioning airbag to cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat; and, In the event of a vehicle collision and the child being ejected from the second seat due to inertia, the multiple airbags are controlled to inflate and deploy. When the multiple airbags inflate and deploy, they form multiple protective chambers. The multiple protective chambers, together with the backrest of the first seat, form a first accommodating space to restrain the child within the first accommodating space. The second seat is located behind the first seat.

2. The safety protection device according to claim 1, characterized in that, The cushioning air cushion also includes a first inflation unit, which is connected to the air cushion body and the control unit. The control unit is further configured to: in response to a first control signal, control the first inflation unit to inflate the air cushion body; or, in response to a collision of the vehicle and the child dislodging from the second seat due to inertia, control the first inflation unit to inflate the air cushion body. The first control signal is a control signal sent by the driver of the vehicle.

3. The safety protection device according to claim 1, characterized in that, The airbag also includes a second inflation unit, which is connected to the control unit; The plurality of airbags includes: A first airbag is disposed at the upper part of the backrest height direction of the first seat. When the first airbag inflates and deploys, it expands in the direction toward the second seat to form a first protective chamber. Two second airbags are symmetrically arranged on the left and right sides of the backrest of the first seat in the width direction. When the two second airbags are inflated and deployed, they independently deploy from the left and right sides of the backrest of the first seat toward the second seat to form two second protective chambers. The first airbag and the two second airbags are each independently connected to the second inflation unit; The control unit is used to control the second inflation unit to inflate the plurality of airbags.

4. The safety protection device according to claim 3, characterized in that, The second airbag includes a first airbag and a second airbag, which are arranged in an L-shape. The extension direction of the first airbag is consistent with the height direction of the vehicle, and the extension direction of the second airbag is consistent with the width direction of the vehicle. Along the height direction, the second airbag is located below the first airbag. The control unit is also used for: When the vehicle collides and the child is ejected from the second seat due to inertia, the second inflation unit is controlled to inflate the first airbag and the two first air bags. When the child bumps into the back of the first seat, the second inflation unit is controlled to inflate the two second air bags.

5. The safety protection device according to claim 3 or 4, characterized in that, The control unit is also used for: The inflation amount of the two second airbags is controlled by the second inflation unit according to the position of the child in the second seat.

6. A control method for a safety protection device, the safety protection device being applied to a vehicle, the safety protection device comprising: The cushioning airbag includes an airbag body disposed on the backrest of the first seat, the airbag body being configured to expand or contract toward the rear space of the first seat; the safety airbag includes a plurality of airbags disposed on the backrest of the first seat, the plurality of airbags being configured to have a contracted state and an inflated deployed state. The method is characterized by comprising: when a child is mounted in the second seat, controlling the cushioning airbag to inflate and cover the backrest of the first seat to prevent the child from colliding with the backrest of the first seat; and, when the vehicle collides and the child disengages from the second seat due to inertia, controlling the plurality of airbags to inflate and deploy, wherein the plurality of airbags inflate and deploy to form a plurality of protective chambers, the plurality of protective chambers and the backrest of the first seat forming a first accommodating space to restrain the child within the first accommodating space; wherein the second seat is located at the rear of the first seat.

7. The control method according to claim 6, characterized in that, The cushioning air cushion also includes a first inflation unit, which is connected to the air cushion body; The method further includes: in response to a first control signal, controlling the first inflation unit to inflate the air cushion body; or, in response to a collision of the vehicle and the child dislodging from the second seat due to inertia, controlling the first inflation unit to inflate the air cushion body; wherein the first control signal is a control signal sent by the driver of the vehicle.

8. The control method according to claim 6, characterized in that, The airbag further includes a second inflation unit; the plurality of airbags include: a first airbag disposed at the upper part of the backrest height direction of the first seat, which expands toward the second seat when inflated to form a first protective chamber; two second airbags symmetrically disposed on the left and right sides of the backrest width direction of the first seat, which expand independently from the left and right sides of the backrest of the first seat toward the second seat when inflated to form two second protective chambers; the first airbag and the two second airbags are independently connected to the second inflation unit. The second airbag includes a first airbag and a second airbag, which are arranged in an L-shape. The extension direction of the first airbag is consistent with the height direction of the vehicle, and the extension direction of the second airbag is consistent with the width direction of the vehicle. Along the height direction, the second airbag is located below the first airbag. The method further includes: in the event of a vehicle collision and the child dislodging from the second seat due to inertia, controlling the second inflation unit to inflate the first airbag and the two first air bags; and in the event of the child colliding with the back of the first seat, controlling the second inflation unit to inflate the two second air bags.

9. The control method according to claim 8, characterized in that, The method further includes: controlling the inflation amount of the second inflation unit for the two second airbags according to the position of the child in the second seat.

10. A vehicle, characterized in that, include: The safety protection device, the first seat, and the second seat as described in any one of claims 1-5, wherein the safety protection device is disposed on the side of the first seat facing the second seat; wherein the second seat is located behind the first seat.

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