Impact-resistant engine hood position safety protection mechanism and working method thereof

Abstract

The application relates to an anti-impact engine bonnet position safety protection mechanism and a working method thereof. The protection mechanism is composed of a reaction mechanism, a limiting seat and a connecting arm. An impact sensor in an air inlet grille in front of a vehicle sends an electric signal to a relay, the relay controls the circuit connection of a storage battery to an electric supporting rod, the electric supporting rod works, a piston rod is elongated to a limit position, a movement arm of an engine bonnet inner side cover support moves around a movement arm shaft of the engine bonnet inner side cover support, the movement arm of the engine bonnet inner side cover support drives an upper suspension arm to rotate, an upper point of the upper suspension arm is separated from the movement arm of the engine bonnet inner side cover support, and under the action of a spring, the upper point is bounced back to a position parallel to the vertical direction of a lower supporting arm. When the impact position of the vehicle is just at the limit position of the movement arm of the engine bonnet inner side cover support, a blocking effect in the forward direction is achieved, and the height of the tail of the front vehicle further threatens the life safety of the driver and the front passenger.

Description

Technical Field

[0001] This invention belongs to the technical field of body-in-white opening and closing components, specifically relating to an impact-resistant engine hood safety protection mechanism and its working method. Background Technology

[0002] When a rear-end collision occurs on a highway, especially with vehicles like large trucks that have high chassis, the front of the vehicle can easily go under the other vehicle, rendering the bumper ineffective. In this situation, the slope of the hood and the A-pillar absorb the deformation force from the collision, leaving a gap between the front bumper and the lower edge of the windshield without any protective measures to withstand the impact of the rear-end collision. This makes the driver and front passenger positions extremely dangerous, seriously jeopardizing their safety.

[0003] Therefore, there is an urgent need to develop a safety protection mechanism that can block the impact of the rear of the vehicle in front when a collision occurs, in order to effectively solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an impact-resistant engine hood safety protection mechanism and its working method to solve the problem of preventing the rear height of vehicles in front from further threatening the lives of the driver and co-driver.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] An impact-resistant engine hood safety protection mechanism consists of two sets of reaction mechanisms, two sets of limiting seats, and a connecting arm.

[0007] Each set of reaction mechanisms consists of an inner cover of the engine hood, an inner cover bracket of the engine hood, an inner cover bracket shaft of the engine hood, an inner cover bracket moving arm of the engine hood, an electric strut, an electric strut bracket, an electric strut bracket shaft, an impact sensor, and a relay. It is used to react when a vehicle collision occurs to avoid impact injuries to the driver and passenger due to the height difference between the front and rear vehicles after a collision.

[0008] The inner side cover of the hood is mounted on the inner side cover bracket of the hood; the shaft of the inner side cover bracket of the hood is mounted between two connecting arms; the moving arm of the inner side cover bracket of the hood is connected to the shaft of the moving arm of the inner side cover bracket of the hood; the shaft of the moving arm of the inner side cover bracket of the hood is mounted on the top of the piston rod of the electric strut; the bottom end of the electric strut is connected to the electric strut bracket; the electric strut bracket is connected to the bottom end of the electric strut and passes through the shaft of the electric strut bracket; the shaft of the electric strut bracket is mounted between two connecting arms; the impact sensor is mounted inside the front grille of the vehicle; the relay is connected to the built-in battery of the lower support arm and the electric strut;

[0009] The limiting seat consists of an upper rotating arm, an upper rotating arm shaft, three springs, and a lower support arm with a built-in battery. It is used to provide support and limit the inner cover support arm of the engine compartment hood of the reaction mechanism when a vehicle collision occurs. The upper rotating arm is fixed on the upper rotating arm shaft and connected to the spring. The upper rotating arm shaft is fixedly installed on the lower support arm. The spring is used to provide a horizontal pulling force to the upper rotating arm to reset it to a vertical position and is connected between the bottom of the upper rotating arm and the top of the lower support arm.

[0010] Furthermore, the inner cover of the engine hood is made of the same material as the body-in-white and is used for decoration and connection with the outer cover of the engine hood.

[0011] Furthermore, the engine hood inner side cover bracket is used to fix and support the engine hood inner side cover, and is forged from 18Ni maraging steel series steel; the engine hood inner side cover bracket shaft is used for the rotational guidance of the engine hood inner side cover bracket.

[0012] Furthermore, the engine hood inner side cover bracket moving arm and the engine hood inner side cover bracket moving arm shaft are both forged from 18Ni martensitic aging steel series steel, and are used to withstand the impact force during vehicle collision and to guide the rotation of the engine hood inner side cover bracket moving arm, respectively.

[0013] Furthermore, the electric strut can be implemented using an LA36 linear push rod, which has a maximum thrust of 6,800 N and a speed of 168 mm / s. The electric strut is used to quickly support the moving arm of the engine hood inner cover bracket when a vehicle collision occurs, thus playing a role in movement and support.

[0014] Furthermore, both the electric strut bracket and the electric strut bracket shaft are forged from 18Ni maraging steel series steel; the electric strut bracket shaft is used for guiding the electric strut bracket to rotate around the shaft.

[0015] Furthermore, the impact sensor is a front collision sensor, used to sense vehicle collisions and send signals to a relay; the relay is used to receive the electrical signals from the impact sensor and control the electric strut to operate.

[0016] Furthermore, the upper rotating arm, the upper rotating arm shaft, and the lower support arm are all forged from 18Ni martensitic aging steel series steel. They are respectively used to provide support and limit when the inner side cover support arm of the engine hood is rotated and reset to a vertical position, to provide rotational guidance around the axis for the upper rotating arm, and to bear and fix the upper rotating arm, the upper rotating arm shaft, and the spring.

[0017] Furthermore, the connecting arm can be forged from 18Ni maraging steel series steel and is used to fix the inner side cover bracket shaft of the engine hood and the electric strut bracket shaft.

[0018] A method for operating an impact-resistant engine hood safety protection mechanism includes the following steps:

[0019] A. When a collision occurs, the impact sensor inside the front air intake grille sends an electrical signal to the relay.

[0020] B. The relay controls the circuit from the battery to the electric strut, the electric strut works, and the piston rod extends to the limit position to control the movement arm of the engine hood inner cover bracket to move around the axis of the engine hood inner cover bracket.

[0021] C. The moving arm of the engine hood inner cover bracket moves the upper rotating arm to rotate. After the upper point of the upper rotating arm is separated from the moving arm of the engine hood inner cover bracket, it springs back to a position parallel to the vertical direction of the lower support arm under the action of the spring.

[0022] D. When the point of collision coincides with the limit of the movement of the inner side cover support arm of the engine hood, it acts as a barrier in the forward direction, preventing the rear height of the vehicle in front from further threatening the lives of the driver and passenger.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] This invention controls an impact sensor inside the front air intake grille of a vehicle to send an electrical signal to a relay. The relay controls the circuit from the battery to the electric strut, causing the electric strut to operate. The piston rod extends to its limit position, controlling the movement arm of the engine hood inner cover bracket to move around the axis of the engine hood inner cover bracket movement arm. At this time, the engine hood inner cover bracket movement arm pushes the upper suspension arm to rotate. After the upper point of the upper suspension arm separates from the engine hood inner cover bracket movement arm, it springs back to a position parallel to the vertical direction of the lower support arm under the action of a spring. When the overlap position of the vehicle collision is exactly at the movement limit position of the engine hood inner cover bracket movement arm, it plays a blocking role in the forward direction, preventing the rear height of the vehicle in front from further threatening the lives of the driver and passenger, thus expanding the field of body-in-white opening and closing components. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of the impact-resistant engine hood safety protection mechanism;

[0027] Figure 2 This is a schematic diagram of the main structure of the reaction mechanism;

[0028] Figure 3 for Figure 2 The left view;

[0029] Figure 4 A schematic diagram of the working mechanism for the impact-resistant engine hood safety protection system. Detailed Implementation

[0030] The present invention will be further described below with reference to embodiments:

[0031] The present invention relates to an impact-resistant engine hood safety protection mechanism, which consists of a reaction mechanism, a limiting seat, and a connecting arm.

[0032] The reaction mechanism consists of two sets, each set comprising an inner side cover of the engine hood, an inner side cover bracket of the engine hood, an inner side cover bracket shaft of the engine hood, an inner side cover bracket moving arm of the engine hood, an electric strut, an electric strut bracket, an electric strut bracket shaft, and an impact sensor and relay.

[0033] The reaction mechanism is used to react when a vehicle collision occurs, so as to avoid impact injury to the driver and passenger due to the height difference between the front and rear vehicles after the collision.

[0034] The inner cover of the engine hood is made of the same material as the body-in-white and is installed on the inner cover bracket of the engine hood for decoration and connection with the outer cover of the engine hood.

[0035] The engine hood inner cover bracket is used to fix and support the engine hood inner cover. The engine hood inner cover bracket can be forged from 18Ni maraging steel series steel, with a maraging steel strength of 2100MPa and a fracture toughness of 66MPa·m1 / 2.

[0036] The engine hood inner side cover bracket shaft is installed between the two connecting arms and is used for rotational guidance of the engine hood inner side cover bracket.

[0037] The moving arm of the engine hood inner side cover bracket can be forged from 18Ni maraging steel series steel and is connected to the shaft of the moving arm of the engine hood inner side cover bracket to withstand the impact force during vehicle collision.

[0038] The moving arm shaft of the engine hood inner side cover bracket can be forged from 18Ni maraging steel series steel and installed on the top of the piston rod of the electric strut for rotational guidance of the moving arm of the engine hood inner side cover bracket.

[0039] The electric strut can be implemented using an LA36 linear actuator, with a maximum thrust of 6,800 N and a speed of 168 mm / s. The bottom end of the electric strut is connected to the electric strut bracket, which is used to quickly support the moving arm of the engine hood inner cover bracket in the event of a vehicle collision, providing both movement and support.

[0040] The electric strut bracket can be forged from 18Ni martensitic aging steel series steel, connected to the bottom end of the electric strut, and passing through the shaft of the electric strut bracket.

[0041] The electric strut support shaft can be forged from 18Ni maraging steel series steel and installed between the two connecting arms for guiding the electric strut support to rotate around the shaft.

[0042] The impact sensor can be implemented using a Zolisin front collision sensor, which is installed inside the vehicle's front grille to sense vehicle collisions and send signals to a relay.

[0043] The relay is connected to the built-in battery and electric strut of the lower support arm, and is used to receive electrical signals from the impact sensor and control the operation of the electric strut.

[0044] The limiting seat consists of an upper rotating arm, an upper rotating arm shaft, a spring, and a lower support arm. The lower support arm has a built-in battery.

[0045] There are two sets of limiting seats, which are used to provide support and limit the inner cover support arm of the engine compartment hood of the reaction mechanism when a vehicle collision occurs.

[0046] The upper rotating arm can be forged from 18Ni martensitic aging steel series steel, fixed on the upper rotating arm shaft, and connected to the spring. It is used to provide support and limit when the inner side cover support arm of the engine hood is rotated and reset to a vertical position.

[0047] The upper rotating arm shaft can be forged from 18Ni martensitic aging steel and fixedly installed on the lower support arm to provide rotational guidance for the upper rotating arm.

[0048] The springs provide a horizontal pulling force to the upper rotating arm, restoring it to its vertical position. There are three springs in total, connected between the bottom of the upper rotating arm and the top of the lower support arm.

[0049] The lower support arm has a built-in battery, forged from 18Ni maraging steel, used to support and secure the upper swing arm, upper swing arm shaft, springs, and other components. The built-in battery can be a 12V rechargeable battery, used to supply power to the electric strut after a vehicle collision, ensuring normal operation of the mechanism. Since it's uncertain whether the vehicle's onboard battery will still function properly after a collision, the built-in battery is used instead of the onboard battery for power supply.

[0050] The connecting arm can be forged from 18Ni maraging steel series steel and is used to fix the inner side cover bracket shaft of the engine hood and the electric strut bracket shaft.

[0051] The impact-resistant engine hood safety protection mechanism of this invention can be used in all passenger vehicles, and provides safety protection for all passenger vehicles in the event of a high-speed rear-end collision with a truck.

[0052] Work methods:

[0053] When a collision occurs, the impact sensor inside the front grille sends an electrical signal to a relay. The relay then connects the circuit from the battery to the electric strut, causing the electric strut to operate. The piston rod extends to its limit position, controlling the movement of the hood cover support arm around its axis. At this point, the hood cover support arm rotates the upper suspension arm. After the upper suspension arm separates from the hood cover support arm, it springs back to a position parallel to the vertical direction of the lower support arm under the action of a spring. Since the point of impact coincides with the limit position of the hood cover support arm, this action acts as a barrier in the forward direction, preventing the rear height of the vehicle in front from further threatening the lives of the driver and front passenger.

[0054] Example 1

[0055] like Figures 1-3 As shown, an impact-resistant engine hood position safety protection mechanism consists of two sets of reaction mechanisms, two sets of limit seats, and connecting arms.

[0056] Each reaction mechanism comprises an engine hood inner cover, an engine hood inner cover bracket, an engine hood inner cover bracket shaft, an engine hood inner cover bracket moving arm, an engine hood inner cover bracket moving arm shaft, an electric strut, an electric strut bracket, an electric strut bracket shaft, an impact sensor, and a relay. Each limiting seat consists of an upper rotating arm, an upper rotating arm shaft, a spring, and a lower support arm with a built-in battery.

[0057] The inner side cover of the engine hood is made of the same material as the body-in-white and is mounted on the inner side cover bracket of the engine hood. The inner side cover bracket is forged from 18Ni maraging steel, with a maraging strength of 2100MPa and a fracture toughness of 66MPa·m1 / 2. The shaft of the inner side cover bracket is forged from 18Ni maraging steel and is mounted between the two connecting arms. The moving arm of the inner side cover bracket is forged from 18Ni maraging steel and is connected to the moving arm shaft of the inner side cover bracket. The moving arm shaft of the inner side cover bracket is forged from 18Ni maraging steel and is mounted on the top of the electric strut piston rod. The electric strut uses an LA36 linear push rod with a maximum thrust of 6,800N and a speed of 168mm / s, and is connected to the electric strut bracket. The electric strut bracket is forged from 18Ni maraging steel and is connected to the electric strut and its bracket shaft. The electric strut bracket shaft, also forged from 18Ni maraging steel, is installed between the two connecting arms. The impact sensor can be implemented using a Zolisin front collision sensor and is installed inside the vehicle's front grille. The relay is connected to the built-in battery and the electric strut.

[0058] The upper rotating arm is forged from 18Ni maraging steel and fixed to the upper rotating arm shaft, connected to the spring. The upper rotating arm shaft is also forged from 18Ni maraging steel and fixedly installed on the lower support arm. Three springs are connected between the bottom of the upper rotating arm and the top of the lower support arm. The lower support arm is forged from 18Ni maraging steel and uses a 12V battery to support and fix the upper rotating arm, upper rotating arm shaft, springs, and other components. Its built-in battery supplies power to the electric strut after a vehicle collision, ensuring the normal operation of the mechanism.

[0059] The connecting arm is forged from 18Ni maraging steel.

[0060] Example 2

[0061] A working method for an impact-resistant engine hood safety protection mechanism, such as Figure 4 As shown, it includes the following steps:

[0062] 1. When a vehicle is involved in a collision, the impact sensor inside the front air intake grille sends an electrical signal to the relay.

[0063] 2. The relay controls the circuit from the battery to the electric strut, the electric strut works, and the piston rod extends to the limit position to control the movement arm of the engine hood inner cover bracket to move around the axis of the engine hood inner cover bracket.

[0064] 3. The moving arm of the engine hood inner cover bracket moves the upper rotating arm to rotate. After the upper point of the upper rotating arm is separated from the moving arm of the engine hood inner cover bracket, it springs back to a position parallel to the vertical direction of the lower support arm under the action of the spring.

[0065] 4. When the point of collision occurs at the limit of the movement of the inner side cover support arm of the engine hood, it acts as a barrier in the forward direction, preventing the rear height of the vehicle in front from further threatening the lives of the driver and passenger.

[0066] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An impact-resistant engine hood safety protection mechanism, characterized in that: It consists of two sets of reaction mechanisms, two sets of limiting seats, and connecting arms; Each set of reaction mechanisms consists of an inner cover of the engine hood, an inner cover bracket of the engine hood, an inner cover bracket shaft of the engine hood, an inner cover bracket moving arm of the engine hood, an electric strut, an electric strut bracket, an electric strut bracket shaft, an impact sensor, and a relay. It is used to react when a vehicle collision occurs to avoid impact injuries to the driver and passenger due to the height difference between the front and rear vehicles after a collision. The inner side cover of the hood is mounted on the inner side cover bracket of the hood; the shaft of the inner side cover bracket of the hood is mounted between two connecting arms; the moving arm of the inner side cover bracket of the hood is connected to the shaft of the moving arm of the inner side cover bracket of the hood; the shaft of the moving arm of the inner side cover bracket of the hood is mounted on the top of the piston rod of the electric strut; the bottom end of the electric strut is connected to the electric strut bracket; the electric strut bracket is connected to the bottom end of the electric strut and passes through the shaft of the electric strut bracket; the shaft of the electric strut bracket is mounted between two connecting arms; the impact sensor is mounted inside the front grille of the vehicle; the relay is connected to the built-in battery of the lower support arm and the electric strut; The limiting seat consists of an upper rotating arm, an upper rotating arm shaft, three springs, and a lower support arm with a built-in battery. It is used to provide support and limit the inner cover support arm of the engine compartment hood of the reaction mechanism when a vehicle collision occurs. The upper rotating arm is fixed on the upper rotating arm shaft and connected to the spring. The upper rotating arm shaft is fixedly installed on the lower support arm. The spring is used to provide a horizontal pulling force to the upper rotating arm to reset it to a vertical position and is connected between the bottom of the upper rotating arm and the top of the lower support arm.

2. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The inner cover of the engine hood is made of the same material as the body-in-white and is used for decoration and connection with the outer cover of the engine hood.

3. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The engine hood inner side cover bracket is used to fix and support the engine hood inner side cover, and is forged from 18Ni martensitic aging steel series steel; the engine hood inner side cover bracket shaft is used as a rotation guide for the engine hood inner side cover bracket.

4. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The engine hood inner side cover bracket moving arm and the engine hood inner side cover bracket moving arm shaft are both forged from 18Ni martensitic aging steel series steel, and are used to withstand the impact force during vehicle collision and to guide the rotation of the engine hood inner side cover bracket moving arm, respectively.

5. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The electric strut can be implemented using an LA36 linear push rod, with a maximum thrust of 6,800 N and a speed of 168 mm / s. The electric strut is used to quickly support the moving arm of the engine hood inner cover bracket when a vehicle collision occurs, serving both a movement and support function.

6. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: Both the electric strut bracket and the electric strut bracket shaft are forged from 18Ni maraging steel series steel; the electric strut bracket shaft is used to guide the electric strut bracket to rotate around the shaft.

7. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The impact sensor is a front collision sensor, used to detect vehicle collisions and send signals to the relay; the relay is used to receive the electrical signals from the impact sensor and control the electric strut to operate.

8. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The upper rotating arm, upper rotating arm shaft, and lower support arm are all forged from 18Ni martensitic aging steel. They are used to provide support and limit the rotation of the upper rotating arm when it is rotated and reset to a vertical position, to provide a guide for the upper rotating arm to rotate around the axis, and to bear and fix the upper rotating arm, upper rotating arm shaft, and spring.

9. The impact-resistant engine hood safety protection mechanism according to claim 1, characterized in that: The connecting arm can be forged from 18Ni maraging steel series steel and is used to fix the inner side cover bracket shaft of the engine hood and the electric strut bracket shaft.

10. The working method of the impact-resistant engine hood position safety protection mechanism according to claim 1, characterized in that, Includes the following steps: A. When a vehicle is involved in a collision, the impact sensor inside the front air intake grille sends an electrical signal to the relay. B. The relay controls the circuit from the battery to the electric strut, the electric strut works, and the piston rod extends to the limit position to control the movement arm of the engine hood inner cover bracket to move around the axis of the engine hood inner cover bracket. C. The moving arm of the engine hood inner cover bracket moves the upper rotating arm to rotate. After the upper point of the upper rotating arm is separated from the moving arm of the engine hood inner cover bracket, it springs back to a position parallel to the vertical direction of the lower support arm under the action of the spring. D. When the point of collision coincides with the limit of the movement of the inner side cover support arm of the engine hood, it acts as a barrier in the forward direction, preventing the rear height of the vehicle in front from further threatening the lives of the driver and passenger.

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