CN111301235B

CN111301235B - Child safety seat with energy absorption and fire extinguishing functions and control method thereof

Info

Publication number: CN111301235B
Application number: CN202010119199.5A
Authority: CN
Inventors: 洪亮; 王子康; 李思远; 刘刚
Original assignee: Jiangsu University
Current assignee: Hefei Longzhi Electromechanical Technology Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2021-08-03
Anticipated expiration: 2040-02-26
Also published as: CN111301235A

Abstract

A child safety seat with energy absorption and fire extinguishing functions and a control method thereof relate to the field of auxiliary safety of vehicles and comprise a seat body and a seat base; the seat body is arranged on the seat base; the seat base is symmetrically provided with a strip-shaped groove A and a strip-shaped groove B; during emergency braking or frontal collision, the elongated projections a and B compress the springs a and B and slide along the elongated grooves a and B. The control method is characterized in that when an automobile is emergently braked or collides frontally, the relevant structures perform corresponding actions under the action of inertia force, and whether the water spray head sprays water or not is determined according to whether a fire disaster occurs or not.

Description

Child safety seat with energy absorption and fire extinguishing functions and control method thereof

Technical Field

The invention belongs to an automobile safety device, and particularly relates to a child safety seat with energy absorption and fire extinguishing functions and a control method thereof, so as to protect the safety of children in an automobile.

Background

When an automobile is braked suddenly or collided frontally, a child seated in the child seat collides frontwards under the action of inertia force, and the acceleration of the head of the child, the acceleration of the chest of the child and the displacement of the head of the child, and the bending moments of the upper and lower necks of the child are overlarge in the process of frontwards collision due to the physiological characteristics of the child, such as the proportion of all parts of the body, incomplete development of bones and muscles and the like, so that all parts of the child are seriously injured and even die.

In addition, after the frontal collision of the car is over, a fire frequently occurs in the car, and since the child cannot move conveniently and needs a long time to unlock the restraint devices such as the worn five-point safety belt, the child cannot escape from the car quickly, so the fire in the car can cause injuries such as skin burn of the child, and the consequences are very serious.

Disclosure of Invention

In order to solve the problems, the invention provides a child safety seat with energy absorption and fire extinguishing functions and a control method thereof, wherein when an emergency brake or frontal collision occurs to a motor vehicle, the child safety seat can effectively protect the safety of children in the vehicle by compressing a spring or spraying water.

The technical purpose is realized by the following technical scheme:

a child safety seat with energy absorption and fire extinguishing functions comprises a seat body and a seat base; the seat body is arranged on the seat base; the seat base is symmetrically provided with a strip-shaped groove A and a strip-shaped groove B; the long-strip-shaped groove A and the long-strip-shaped groove B are internally provided with a long-strip-shaped bulge A and a long-strip-shaped bulge B respectively, one end of each of the spring A and the spring B is arranged on the long-strip-shaped groove A and the long-strip-shaped groove B respectively, and the other end of each of the spring A and the spring B is arranged on the long-strip-shaped bulge A and the long-strip-shaped bulge B respectively; during a frontal collision or an emergency brake, the elongated projections a and B compress the springs a and B and slide along the elongated grooves a and B.

Under the effect of inertial force, rectangular form protruding A and rectangular form protruding B extrusion spring A and spring B take place axial elastic deformation, through the elastic deformation of spring, absorb the dash energy of children and seat body to can effectively avoid or alleviate the injury that children received.

Further, the lower bottom surface of the seat body is arranged on the elongated projections a and the elongated projections B.

Furthermore, a water tank is arranged on the seat base and is arranged between the strip-shaped groove A and the strip-shaped groove B, water in the water tank enters the water spraying head A or flows into the backflow hose A through the water pipe A, the overflow hose A and the Y-shaped water pipe A, and enters the water spraying head B or flows into the backflow hose B through the water pipe B, the overflow hose B and the Y-shaped water pipe B; a flow divider valve A is arranged in the Y-shaped water pipe A, and a flow divider valve B is arranged in the Y-shaped water pipe B; a check valve A is arranged between the backflow hose A and the water tank, and a check valve B is arranged between the backflow hose B and the water tank; the water tank is internally provided with a sliding plate A, and the sliding plate A can slide along the inner wall of the water tank under the action of external force so as to extrude the water in the water tank.

Through setting up the water tank to make under the effect of inertial force, can further absorb children and seat body's the forward rush energy through sliding plate A to the extrusion of water, thereby can effectively avoid or alleviate the injury that children received, in addition, when the conflagration breaing out in the car, water accessible sprinkler bead A, sprinkler bead B blowout in the water tank, thereby alleviate the injury of conflagration to the person of taking, further ensure the safety of personnel and vehicle.

Furthermore, the sliding plate A is provided with one end of a round rod, the other end of the round rod extends out of the water tank and is connected with the sliding plate B, and the sliding plate B is fixedly connected with the seat body.

Further, the upper, lower, left and right surfaces of the sliding plate a are respectively attached to the inner sides of the upper, lower, left and right walls of the water tank.

Further, the flame detector also comprises a controller (ECU for short), wherein the ECU controls the working states of the diverter valve A and the diverter valve B and the one-way valve A and the one-way valve B according to a detection signal of the flame detector; and the ECU judges whether the automobile has emergency braking or frontal collision according to a detection signal of the speed sensor.

A control method of a child safety seat with energy absorption and fire extinguishing functions comprises the following steps:

the method comprises the following steps: when the automobile is emergently braked or collides with the front surface, the child collides with the seat body forwards under the action of inertia force, so that the strip-shaped bulge A and the strip-shaped bulge B respectively extrude the spring A and the spring B; when the axial compression force borne by the two springs exceeds 400N, the two springs are axially and elastically deformed, so that on one hand, the forward impact energy of the child and the seat body is absorbed through the elastic deformation of the springs to effectively avoid or reduce the injury borne by the child, and on the other hand, the strip-shaped protrusion A and the strip-shaped protrusion B respectively slide forwards along the strip-shaped groove A and the strip-shaped groove B to further buffer the forward impact energy;

step two: the seat body and the sliding plate B are driven to move forwards in the process that the strip-shaped bulges A and the strip-shaped bulges B slide forwards, and the sliding plate B pushes the sliding plate A to slide forwards along the inner wall of the water tank under the force transmission action of the two round rods;

step three: in the process that the sliding plate A slides forwards along the inner wall of the water tank, the sliding plate A extrudes water in the water tank to overflow outwards through the water pipe A and the water pipe B, so that the forward impact energy of a child and the seat body is further absorbed, and the injury of the child is effectively avoided or alleviated; overflowing water flows upwards along the water pipe A, the water pipe B, the overflow hose A and the overflow hose B after overflowing through the water pipe A and the water pipe B;

step four: when the automobile is braked emergently or collided frontally, the child and the seat body lose the action of inertia force and do not collide frontwards any more, at the moment, the spring A and the spring B lose the action of extrusion force of the strip-shaped bulge A and the strip-shaped bulge B and restore the original shape along the axial direction, so that the spring A and the spring B reversely extrude the strip-shaped bulge A and the strip-shaped bulge B to slide backwards to restore the initial positions, and meanwhile, under the action of force transmission, the sliding plate B, the sliding plate A and the seat body restore the initial positions;

step five: when the frontal collision of the automobile is finished, the ECU obtains whether a fire disaster occurs in the automobile or not according to a detection signal of the flame detector;

when judging that the fire disaster does not happen in the vehicle: on one hand, the ECU controls the diverter valve A and the diverter valve B to keep the initial state, so that the overflow hose A and the return hose A are communicated, the overflow hose B and the return hose B are communicated, and water overflowing from the water tank flows into the return hose A and the return hose B through the overflow hose A and the overflow hose B respectively; on the other hand, the ECU controls the one-way valve A and the one-way valve B to be in an open state, so that overflowed water flows into the water tank again through the backflow hose A, the backflow hose B, the one-way valve A and the one-way valve B so as to be used repeatedly; after the frontal collision is finished, the ECU controls the one-way valve A and the one-way valve B to recover to a closed state; when the one-way valve A and the one-way valve B return to the closed state, the ECU closes the child safety seat with the energy absorption and fire extinguishing functions;

when a fire disaster in the vehicle is judged: the flame detector detects that a fire disaster happens in the vehicle and transmits a fire disaster signal to the ECU; when the ECU judges that a fire disaster occurs in the vehicle according to a detection signal of the flame detector, the ECU controls the diverter valve A and the diverter valve B to change the water flow direction and communicate the overflow hose A with the sprinkler head A and the overflow hose B with the sprinkler head B, water overflowing from the water tank flows into the sprinkler head A and the sprinkler head B through the overflow hose A and the overflow hose B respectively and then is sprayed out of the seat body through the sprinkler head A and the sprinkler head B, so that the injury of the fire disaster to children is effectively avoided or alleviated.

Further, when a fire disaster occurs in the vehicle, after the flame is extinguished, water is added into the sprinkler A and the sprinkler B according to the volume of the water tank and the residual water amount in the water tank, and the water flows into the water tank through the overflow hose A, the overflow hose B, the water pipe A and the water pipe B, so that the water tank is filled again for reuse; after the water tank is filled, a button is pressed to restore the original state of the diverter valve A and the diverter valve B; after the diverter valve A and the diverter valve B recover the initial state, the ECU closes the child safety seat with the energy absorption and fire extinguishing functions.

Further, the vehicle speed sensor sends the running speed of the vehicle detected in real time to the ECU, the ECU calculates the deceleration of the vehicle according to the detection information, and if the deceleration of the vehicle exceeds a certain threshold value, the ECU judges that the automobile has emergency braking or front collision.

According to the technical scheme, the child safety seat with the energy absorption and fire extinguishing functions is arranged on a rear seat of an automobile, when the automobile is subjected to emergency braking or frontal collision, a child collides with a seat body forwards under the action of inertia force, and firstly, a spring A and a spring B are subjected to axial elastic deformation to enable a sliding plate B to slide forwards; secondly, the sliding plate B drives the sliding plate A to slide forwards along the inner wall of the water tank, so that the sliding plate A pushes water in the water tank to overflow out of the water tank through the overflow water pipe device; and finally, the forward energy of the children is buffered, so that the injury of the children is effectively avoided or alleviated. And when the emergency brake or the frontal collision of the automobile is finished, the sliding plate B and the sliding plate A recover to the initial positions. If the front collision is finished and a fire disaster occurs in the vehicle, the ECU judges that the fire disaster occurs in the vehicle according to the detection signal of the flame detector, and controls the working states of the diverter valve A, the diverter valve B, the one-way valve A and the one-way valve B to enable the sprinkler bead A and the sprinkler bead B to spray water outwards so as to effectively avoid or reduce the damage of the fire disaster to children; if the front collision is over and the fire disaster does not happen in the vehicle, the ECU controls the working states of the diverter valve A, the diverter valve B, the one-way valve A and the one-way valve B, so that the water leaked from the water tank flows back to the water tank again.

The invention has the beneficial effects that:

according to the child safety seat with the energy absorption and fire extinguishing functions, on one hand, when an automobile is subjected to emergency braking or frontal collision, the forward impact energy of a child is buffered through the axial elastic deformation of the spring and the leakage of water in the water tank, so that the injury to the child is effectively avoided or alleviated; on the other hand, when the front collision of the automobile is over and a fire disaster occurs in the automobile, the water is sprayed outwards through the water spraying device, so that the injury of the fire disaster to children is effectively avoided or alleviated; on the other hand, when a fire breaks out in the vehicle after the frontal collision of the vehicle is over, the water leaking from the water tank flows into the water tank again through the water return pipe device for reuse.

Drawings

FIG. 1 is a schematic structural view of a seat body and a seat base;

FIG. 2 is a schematic structural view of a seat base, an elongated groove A and an elongated groove B;

FIG. 3 is a schematic structural view of a seat base, an elongated protrusion A, an elongated protrusion B, a spring A, a spring B and a water tank;

FIG. 4 is a schematic structural diagram of a water pipe A, a water pipe B, an overflow hose A, an overflow hose B, a return hose A, a return hose B, a water tank, a sliding plate B, a sprinkler head A, and a sprinkler head B, Y type water pipe A, Y type water pipe B;

FIG. 5 is a schematic structural view of the sliding plate A and the sliding plate B;

FIG. 6 is a control schematic diagram of check valve A, check valve B, diverter valve A, diverter valve B, flame detector, vehicle speed sensor, ECU.

The reference numbers refer to: 1-a seat body; 2-a seat base; 3-1-water pipe A; 3-2-water pipe B; 4-1-overflow hose a; 4-2-overflow hose B; 5-1-reflux hose A; 5-2-reflux hose B; 6-1-strip-shaped protrusion A; 6-2-strip-shaped protrusion B; 7-1-strip-shaped groove A; 7-2-strip-shaped groove B; 8-1-spring A; 8-2-spring B; 9-a water tank; 10-sliding plate a; 11-1-check valve A; 11-2-check valve B; 12-sliding plate B; 13-1-sprinkler head A; 13-2-sprinkler head B; 14-1-a diverter valve a; 14-2-diverter valve B; 15-a flame detector; 16-vehicle speed sensor; 17-an ECU; an 18-1-Y type water pipe A; an 18-2-Y type water pipe B.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified 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 connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following first describes in detail embodiments according to the present invention with reference to the accompanying drawings

A child safety seat with energy absorption and fire extinguishing functions comprises a seat body 1 and a seat base 2; the seat body 1 is of a hollow structure and is arranged on the seat base 2; the seat base 2 is symmetrically provided with a strip-shaped groove A7-1 and a strip-shaped groove B7-2; the strip-shaped groove A7-1 and the strip-shaped groove B7-2 are respectively provided with a strip-shaped protrusion A6-1 and a strip-shaped protrusion B6-2, one end of the spring A8-1 and one end of the spring B8-2 are respectively arranged on the strip-shaped groove A7-1 and the strip-shaped groove B7-2, and the other end of the spring A8-1 and the other end of the spring B3538-2 are respectively arranged on the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2; during a frontal collision or an emergency brake, the elongated protrusion A6-1 and the elongated protrusion B6-2 slide along the elongated groove A7-1 and the elongated groove B7-2 and compress the spring A8-1 and the spring B8-2; the lower bottom surface of the seat body 1 is arranged on the elongated projection A6-1 and the elongated projection B6-2.

Under the action of inertia force, the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2 extrude the spring A8-1 and the spring B8-2 to generate axial elastic deformation, and through the elastic deformation of the springs, the forward impact energy of a child and the seat body 1 is absorbed, so that the injury of the child can be effectively avoided or alleviated.

The seat base 2 is further provided with a water tank 9, the water tank 9 is arranged between the strip-shaped groove A7-1 and the strip-shaped groove B7-2, water in the water tank 9 enters the water spraying head A13-1 or flows into the return hose A5-1 through the water pipe A3-1, the overflow hose A4-1 and the Y-shaped water pipe A18-1, and enters the water spraying head B13-2 or flows into the return hose B5-2 through the water pipe B3-2, the overflow hose B4-2 and the Y-shaped water pipe B18-2; a flow dividing valve A14-1 is arranged in the Y-shaped water pipe A18-1, and a flow dividing valve B14-2 is arranged in the Y-shaped water pipe B18-2; a check valve A11-1 is arranged between the return hose A5-1 and the water tank 9, and a check valve B11-2 is arranged between the return hose B5-2 and the water tank 9.

Through setting up water tank 9, when the conflagration breaks out in the car, water accessible shower nozzle blowout to alleviate the conflagration and to the injury of taking the people, further ensured the safety of personnel and vehicle.

In addition, a sliding plate a10 is provided in the water tank 9, and the sliding plate a10 can slide along the inner wall of the water tank 9 by an external force, thereby pressing the water in the water tank 9.

Through set up sliding plate A10 in water tank 9, under the effect of inertial force, through the extrusion of sliding plate A10 to water, can further slow down and absorb the dash energy of children and seat body 1 to the injury that can effectively avoid or alleviate children and receive.

Referring to fig. 1 to 6, in the child safety seat with energy absorption and fire extinguishing functions, the seat body 1 is arranged at the uppermost end, the seat body 1 is of a hollow structure, and the seat base 2 is located below the seat body 1. The left side and the right side of the lower end of the seat body 1 are respectively fixedly connected with the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2, and the structure and the size of the strip-shaped protrusion A6-1 are the same as those of the strip-shaped protrusion B6-2. The seat base 2 is of a U-shaped structure, a through groove is formed in the middle of the upper end of the seat base, the left side and the right side of the upper end of the seat base 2 are respectively provided with a strip-shaped groove A7-1 and a strip-shaped groove B7-2, and the structure and the size of the strip-shaped groove A7-1 are the same as those of the strip-shaped groove B7-2. The rear end of the seat base 2 is fixedly connected with the in-vehicle adult seat, so that the child safety seat is fixedly connected with the in-vehicle adult seat. The lower parts of the long-strip-shaped protrusion A6-1 and the long-strip-shaped protrusion B6-2 are respectively embedded in the long-strip-shaped groove A7-1 and the long-strip-shaped groove B7-2, and the axial lengths of the long-strip-shaped protrusion A6-1 and the long-strip-shaped protrusion B6-2 are respectively smaller than the axial lengths of the long-strip-shaped groove A7-1 and the long-strip-shaped groove B7-2. The strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2 can slide forwards and backwards along the strip-shaped groove A7-1 and the strip-shaped groove B7-2 respectively. When the elongated projection A6-1 and the elongated projection B6-2 are located at the initial positions, the rear surfaces of the elongated projection A6-1 and the elongated projection B6-2 are respectively contacted with the rear surfaces of the elongated groove A7-1 and the elongated groove B7-2.

With reference to fig. 2 and 3, a spring A8-1 is arranged between the front end of the elongated protrusion a6-1 and the front end of the elongated groove a7-1, the front end of the spring A8-1 is fixedly connected with the elongated groove a7-1, and the rear end of the spring A8-1 is fixedly connected with the elongated protrusion a 6-1. A spring B8-2 is arranged between the front end of the long-strip-shaped protrusion B6-2 and the front end of the long-strip-shaped groove B7-2, the front end of the spring B8-2 is fixedly connected with the long-strip-shaped groove B7-2, and the rear end of the spring B8-1 is fixedly connected with the long-strip-shaped protrusion B6-1.

Specifically, the axial center lines of the strip-shaped protrusion A6-1, the strip-shaped groove A7-1 and the spring A8-1 are parallel to each other; the axial center lines of the elongated projection B6-2, the elongated groove B7-2 and the spring B8-2 are parallel to each other.

The spring A8-1 and the spring B8-2 can elastically deform in the axial direction only under a certain axial pressure.

Referring to fig. 3 and 4, the water tank 9 is disposed in the through groove of the seat base 2 and is fixedly connected to the seat base 2. The water tank 9 is a hollow rectangular parallelepiped, and the inside thereof is filled with water. The water pipe A3-1 and the water pipe B3-2 are in an inverted L shape, the lower ends of the water pipe A3-1 and the water pipe B3-2 are communicated with the left side and the right side of the front wall of the water tank 9, and good sealing performance is kept. The upper ends of the water pipe A3-1 and the water pipe B3-2 are respectively communicated with the lower ends of the overflow hose A4-1 and the overflow hose B4-2, and good sealing performance is kept.

The upper end of the overflow hose A4-1 is communicated with the lower end of the Y-shaped water pipe A18-1; in addition, the second end of the Y-shaped water pipe A18-1 is communicated with the upper end of the return hose A5-1, the third end of the Y-shaped water pipe A18-1 extends out of the seat body 1, the end is communicated with the water spray head A13-1, and the communicated part has good sealing performance. The center of the Y-shaped water pipe A18-1 is provided with a diverter valve A14-1. The upper end of the overflow hose B4-2 is communicated with the lower end of the Y-shaped water pipe B18-2; in addition, the second end of the Y-shaped water pipe B18-2 is communicated with the upper end of the return hose B5-2, the third end of the Y-shaped structure B18-2 extends out of the seat body 1, the end is communicated with the water spray head B13-2, and the communicated part has good sealing performance. A shunt valve B14-2 is arranged at the center of the Y-shaped water pipe B18-2. The Y-shaped water pipe A18-1 and the Y-shaped water pipe B18-2 are identical in structure and size.

The lower ends of the return hose A5-1 and the return hose B5-2 are respectively communicated with the left side and the right side of the front end of the upper wall of the water tank 9, good sealing performance is kept, and a one-way valve A11-1 and a one-way valve B11-2 are respectively arranged at the communicated positions.

The slide plate B12 is disposed laterally at a rearward position of the lower end of the seat body 1 and is fixedly connected to the seat body 1. The slide plate B12 is located in the through slot of the seat base 2.

Referring to FIG. 5, slide plate A10 is positioned within tank 9 such that its rear surface contacts the inside of the rear wall of tank 9 when slide plate A10 is in its initial position. The upper, lower, left and right surfaces of the slide plate a10 are respectively attached to the inner sides of the upper, lower, left and right walls of the water tank 9, and the slide plate a10 can slide forward and backward along the inner wall of the water tank 9. During the forward sliding of the sliding plate A10, water in the water tank 9 can be squeezed and overflow outwards through the water pipe A3-1 and the water pipe B3-2.

Slide plate B12 is fixedly attached to the rear surface of slide plate a10 by two round bars. The rear wall of the water tank 9 is provided with two round holes through which two round rods are inserted into the water tank 9. The two round holes are sealed by sealing rings to keep good sealing performance.

An overflow hose A4-1 and an overflow hose B4-2; the return hose A5-1 and the return hose B5-2 are disposed inside the seat body 1.

The flame detector 15 is mounted on the roof of the vehicle and detects whether a fire is occurring in the vehicle and sends the detection information to the ECU 17.

The vehicle speed sensor 16 is mounted to the vehicle body for detecting the running speed of the vehicle in real time and sending the detection information to the ECU 17.

Referring to FIG. 6, ECU17 controls diverter valve A14-1, diverter valve B14-2, check valve A11-1 and check valve B11-2, and obtains the working states of diverter valve A14-1, diverter valve B14-2, check valve A11-1 and check valve B11-2.

Specifically, when the diverter valve A14-1 and the diverter valve B14-2 are in an initial state, the diverter valve A14-1 communicates the overflow hose A4-1 with the return hose A5-1, and the communication between the overflow hose A4-1 and the sprinkler head A13-1 is blocked; the flow dividing valve B14-2 is communicated with the overflow hose B4-2 and the return hose B5-2, and the communication between the overflow hose B4-2 and the sprinkler head B13-2 is blocked.

Specifically, when the check valves A11-1 and B11-2 are in the initial state, the check valves A11-1 and B11-2 are in the closed state.

Specifically, when a fire breaks out in the vehicle after the frontal collision of the vehicle is ended, the flame detector 15 detects the fire breaking out in the vehicle and transmits a fire signal to the ECU 17. When the ECU17 judges that a fire breaks out in the vehicle according to a detection signal of the flame detector 15, the ECU17 controls the diverter valve A14-1 and the diverter valve B14-2 to change the water flow direction, the overflow hose A4-1 is communicated with the water spray head A13-1, the communication between the overflow hose A4-1 and the return hose A5-1 is blocked, the overflow hose B4-2 is communicated with the water spray head B13-2, and the communication between the overflow hose B4-2 and the return hose B5-2 is blocked; the check valve A11-1 and the check valve B11-2 are controlled to keep the initial state. When the front collision of the automobile is over and no fire breaks out in the automobile, the ECU17 controls the diverter valve A14-1 and the diverter valve B14-2 to keep the initial state.

The ECU17 is the core of the entire apparatus and may be integrated into the central controller of the vehicle. The ECU17 is connected with a check valve A11-1, a check valve B11-2, a diverter valve A14-1, a diverter valve B14-2, a flame detector 15 and a vehicle speed sensor 16 through different ports.

In order to achieve the aim of effectively protecting children passengers when an automobile is emergently braked or collides frontally, the invention is realized by the following steps:

after the automobile starts to run, the vehicle speed sensor 16 detects the running speed of the automobile in real time and sends the detection information to the ECU 17; the ECU17 calculates the deceleration of the vehicle according to the detection information, if the deceleration of the vehicle exceeds a certain threshold value, the ECU17 judges that the vehicle has emergency braking or frontal collision, and at the moment, the ECU17 starts the child safety seat with energy absorption and fire extinguishing functions;

the method comprises the following steps: when an automobile is braked emergently or collided frontally, under the action of inertia force, a child collides with the seat body 1 frontwards, so that the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2 respectively press the spring A8-1 and the spring B8-2; if the axial compression force borne by the two springs exceeds 400N, the two springs are axially and elastically deformed, so that on one hand, the elastic deformation of the springs absorbs the forward impact energy of the child and the seat body 1 to effectively avoid or reduce the injury of the child, and on the other hand, the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2 slide forwards along the strip-shaped groove A7-1 and the strip-shaped groove B7-2 respectively;

step two: in the process that the strip-shaped protrusion A6-1 and the strip-shaped protrusion B6-2 slide forwards, the seat body 1 and the sliding plate B12 are driven to move forwards, and the sliding plate B12 pushes the sliding plate A10 to slide forwards along the inner wall of the water tank 9 under the force transmission action of the two round rods;

step three: in the process that the sliding plate A10 slides forwards along the inner wall of the water tank 9, the sliding plate A10 extrudes water in the water tank 9 to overflow outwards through the water pipe A3-1 and the water pipe B3-2, so that the forward impact energy of a child and the seat body 1 is further absorbed, and the injury of the child is effectively avoided or alleviated; the overflowed water overflows through a water pipe A3-1 and a water pipe B3-2 and then flows upwards along the water pipe A3-1, the water pipe B3-2, an overflow hose A4-1 and an overflow hose B4-2;

step four: after the emergency brake or the frontal collision of the automobile is finished, the child and the seat body 1 lose the action of inertia force and do not collide forwards any more, at the moment, the spring A8-1 and the spring B8-2 lose the extrusion force action of the long-strip-shaped protrusion A6-1 and the long-strip-shaped protrusion B6-2 and restore the original shape along the axial direction, so that the spring A8-1 and the spring B8-2 reversely extrude the long-strip-shaped protrusion A6-1 and the long-strip-shaped protrusion B6-2 to slide backwards to restore the initial position, and meanwhile, under the force transmission action, the sliding plate B12, the sliding plate A10 and the seat body 1 restore the initial position;

step five: after the frontal collision of the automobile is finished, when the ECU17 judges that a fire disaster does not happen in the automobile according to a detection signal of the flame detector 15, on one hand, the ECU17 controls the diverter valve A14-1 and the diverter valve B14-2 to keep an initial state, so that the overflow hose A4-1 and the return hose A5-1 are communicated, the overflow hose B4-2 and the return hose B5-2 are communicated, and water overflowing from the water tank 9 flows into the return hose A5-1 and the return hose B5-2 through the overflow hose A4-1 and the overflow hose B4-2 respectively; on the other hand, the ECU17 controls the one-way valve A11-1 and the one-way valve B11-2 to be in an open state, so that overflowed water flows into the water tank 9 again through the return hose A5-1, the return hose B5-2, the one-way valve A11-1 and the one-way valve B11-2 so as to be reused; after five minutes after the frontal collision is finished, the ECU16 controls the check valve A11-1 and the check valve B11-2 to recover to the closed state; when the one-way valve A11-1 and the one-way valve B11-2 are restored to the closed state, the ECU16 closes the child safety seat with energy absorption and fire extinguishing functions;

if the front collision of the automobile is finished, a fire disaster happens in the automobile: the flame detector 15 detects a fire in the vehicle and transmits a fire signal to the ECU 17; when the ECU17 judges that a fire breaks out in the vehicle according to a detection signal of the flame detector 15, the ECU17 controls the diverter valve A14-1 and the diverter valve B14-2 to change the water flow direction, the overflow hose A4-1 and the sprinkler head A13-1 are communicated, the overflow hose B4-2 and the sprinkler head B13-2 are communicated, water overflowing from the water tank 9 flows into the sprinkler head A13-1 and the sprinkler head B13-2 through the overflow hose A4-1 and the overflow hose B4-2 respectively, and then is sprayed out of the seat body 1 through the sprinkler head A13-1 and the sprinkler head B13-2, so that the injury of the fire to children is effectively avoided or reduced;

in addition, after the flame is extinguished, a driver adds water into the water spraying head A13-1 and the water spraying head B13-2 according to the volume of the water tank 9 and the residual water amount in the water tank 9, and the water flows into the water tank 9 through the overflow hose A4-1, the overflow hose B4-2, the water pipe A3-1 and the water pipe B3-2, so that the water tank 9 is filled again for reuse; after the water tank 9 is filled, a driver presses a button to enable the diverter valve A14-1 and the diverter valve B14-2 to recover the initial state; after the diverter valve A14-1 and the diverter valve B14-2 are restored to the initial states, the ECU16 closes the child safety seat with energy absorption and fire extinguishing functions.

Specifically, the child safety seat with the energy absorption and fire extinguishing functions is a forward type child safety seat.

It should be noted that the direction indicators such as up, down, left, right, front, and rear, etc. related to the present invention are consistent with the corresponding up, down, left, right, front, and rear when the automobile is used conventionally.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. A child safety seat with energy absorption and fire extinguishing functions is characterized by comprising a seat body (1) and a seat base (2); the seat body (1) is arranged on the seat base (2); the seat base (2) is symmetrically provided with a strip-shaped groove A (7-1) and a strip-shaped groove B (7-2); the strip-shaped groove A (7-1) and the strip-shaped groove B (7-2) are internally provided with a strip-shaped bulge A (6-1) and a strip-shaped bulge B (6-2) respectively, one end of the spring A (8-1) and one end of the spring B (8-2) are arranged on the strip-shaped groove A (7-1) and the strip-shaped groove B (7-2) respectively, and the other end of the spring A (8-1) and the other end of the spring B (8-2) are arranged on the strip-shaped bulge A (6-1) and the strip-shaped bulge B (6-2); when the automobile is braked emergently or collided frontally, the strip-shaped protrusion A (6-1) and the strip-shaped protrusion B (6-2) compress the spring A (8-1) and the spring B (8-2) and slide along the strip-shaped groove A (7-1) and the strip-shaped groove B (7-2); the seat base (2) is further provided with a water tank (9), the water tank (9) is arranged between the long-strip-shaped groove A (7-1) and the long-strip-shaped groove B (7-2), water in the water tank (9) enters the water spraying head A (13-1) or flows into the backflow hose A (5-1) through the water pipe A (3-1), the overflow hose A (4-1) and the Y-shaped water pipe A (18-1), and enters the water spraying head B (13-2) or flows into the backflow hose B (5-2) through the water pipe B (3-2), the overflow hose B (4-2) and the Y-shaped water pipe B (18-2); a shunt valve A (14-1) is arranged in the Y-shaped water pipe A (18-1), and a shunt valve B (14-2) is arranged in the Y-shaped water pipe B (18-2); a check valve A (11-1) is arranged between the backflow hose A (5-1) and the water tank (9), and a check valve B (11-2) is arranged between the backflow hose B (5-2) and the water tank (9); a sliding plate A (10) is arranged in the water tank (9), and the sliding plate A (10) can slide along the inner wall of the water tank (9) under the action of external force so as to extrude the water in the water tank (9); the sliding plate A (10) is arranged at one end of the round rod, the other end of the round rod extends out of the water tank (9) and is connected with the sliding plate B (12), and the sliding plate B (12) is fixedly connected with the seat body (1); the upper, lower, left and right surfaces of the sliding plate A (10) are respectively attached to the inner sides of the upper, lower, left and right walls of the water tank (9).

2. The child safety seat with energy absorption and fire extinguishing functions according to claim 1, wherein the lower bottom surface of the seat body (1) is provided on the elongated projections a (6-1) and the elongated projections B (6-2).

3. The child safety seat with the energy absorption and fire extinguishing functions according to claim 1, further comprising an ECU (17), wherein the ECU (17) controls the working states of the diverter valve A (14-1), the diverter valve B (14-2), the check valve A (11-1) and the check valve B (11-2) according to a detection signal of the flame detector (15); the ECU (17) judges whether the vehicle has an emergency brake or a frontal collision according to a detection signal of the vehicle speed sensor (16).

4. The method for controlling a child safety seat having energy absorption and fire extinguishing functions according to any one of claims 1 to 3, comprising the steps of:

the method comprises the following steps: when an automobile is braked emergently or collided frontally, under the action of inertia force, a child collides with the seat body (1) forwards, so that the strip-shaped bulge A (6-1) and the strip-shaped bulge B (6-2) respectively extrude the spring A (8-1) and the spring B (8-2); when the axial compression force borne by the two springs exceeds 400N, the two springs are axially and elastically deformed, so that on one hand, the forward impact energy of the child and the seat body (1) is absorbed through the elastic deformation of the springs to effectively avoid or reduce the injury suffered by the child, and on the other hand, the strip-shaped protrusion A (6-1) and the strip-shaped protrusion B (6-2) respectively slide forwards along the strip-shaped groove A (7-1) and the strip-shaped groove B (7-2) to further buffer the forward impact energy;

step two: in the process that the strip-shaped bulges A (6-1) and the strip-shaped bulges B (6-2) slide forwards, the seat body (1) and the sliding plate B (12) are driven to move forwards, and the sliding plate B (12) pushes the sliding plate A (10) to slide forwards along the inner wall of the water tank (9) under the force transmission action of the two round rods;

step three: in the process that the sliding plate A (10) slides forwards along the inner wall of the water tank (9), the sliding plate A (10) extrudes water in the water tank (9) to overflow outwards through the water pipe A (3-1) and the water pipe B (3-2), so that the forward impact energy of a child and the seat body (1) is further absorbed, and the injury to the child is effectively avoided or relieved; overflowing water flows upwards along the water pipe A (3-1), the water pipe B (3-2), the overflow hose A (4-1) and the overflow hose B (4-2) after overflowing through the water pipe A (3-1) and the water pipe B (3-2);

step four: after the automobile emergency brake or the frontal collision is finished, the child and the seat body (1) lose the action of inertia force and do not collide forwards any more, at the moment, the spring A (8-1) and the spring B (8-2) lose the extrusion force action of the strip-shaped protrusion A (6-1) and the strip-shaped protrusion B (6-2) and restore the original shape along the axial direction, so that the spring A (8-1) and the spring B (8-2) reversely extrude the strip-shaped protrusion A (6-1) and the strip-shaped protrusion B (6-2) to slide backwards to restore the original position, and meanwhile, under the action of force transmission, the sliding plate B (12), the sliding plate A (10) and the seat body (1) restore the original position;

step five: after the frontal collision of the automobile is finished, the ECU (17) obtains whether a fire disaster occurs in the automobile or not according to a detection signal of the flame detector (15);

when judging that the fire disaster does not happen in the vehicle: on one hand, the ECU (17) controls the diverter valve A (14-1) and the diverter valve B (14-2) to keep an initial state so as to communicate the overflow hose A (4-1) with the return hose A (5-1) and the overflow hose B (4-2) with the return hose B (5-2), and water overflowing from the water tank (9) flows into the return hose A (5-1) and the return hose B (5-2) through the overflow hose A (4-1) and the overflow hose B (4-2) respectively; on the other hand, the ECU (17) controls the one-way valve A (11-1) and the one-way valve B (11-2) to be in an open state, so that overflowed water flows into the water tank (9) again through the return hose A (5-1), the return hose B (5-2), the one-way valve A (11-1) and the one-way valve B (11-2) for repeated use; after the frontal collision is finished, the ECU (16) controls the one-way valve A (11-1) and the one-way valve B (11-2) to recover to the closed state; when the one-way valve A (11-1) and the one-way valve B (11-2) return to the closed state, the ECU (16) closes the child safety seat with the energy absorption and fire extinguishing functions;

when a fire disaster in the vehicle is judged: the flame detector (15) detects the fire in the vehicle and transmits a fire signal to the ECU (17); when the ECU (17) judges that a fire disaster occurs in the vehicle according to a detection signal of the flame detector (15), the ECU (17) controls the diverter valve A (14-1) and the diverter valve B (14-2) to change the water flow direction, the overflow hose A (4-1) and the sprinkler head A (13-1) are communicated, the overflow hose B (4-2) and the sprinkler head B (13-2) are communicated, water overflowing from the water tank (9) flows into the sprinkler head A (13-1) and the sprinkler head B (13-2) through the overflow hose A (4-1) and the overflow hose B (4-2) respectively, and then is sprayed out of the seat body (1) through the sprinkler head A (13-1) and the sprinkler head B (13-2), so that the injury of the fire disaster to children is effectively avoided or relieved.

5. The method for controlling a child safety seat having energy absorption and fire extinguishing functions according to claim 4, wherein when it is determined that a fire is occurring in the vehicle, after the flame is extinguished, water is added to the sprinkler head A (13-1) and the sprinkler head B (13-2) according to the volume of the water tank (9) and the remaining amount of water in the water tank (9), and the water flows into the water tank (9) through the overflow hose A (4-1), the overflow hose B (4-2), the water pipe A (3-1) and the water pipe B (3-2), so that the water tank (9) is refilled for reuse; after the water tank (9) is filled, a button is pressed to enable the diverter valve A (14-1) and the diverter valve B (14-2) to recover to the initial state; after the diverter valve A (14-1) and the diverter valve B (14-2) are restored to the initial states, the ECU (16) closes the child safety seat with the energy absorption and fire extinguishing functions.

6. The method of claim 4, wherein the vehicle speed sensor (16) transmits a vehicle running speed detected in real time to the ECU (17), the ECU (17) calculates a deceleration of the vehicle based on the detected information, and the ECU (17) determines that the vehicle has an emergency brake or a frontal collision if the deceleration of the vehicle exceeds a certain threshold.