A reusable anti-shock module and working method

Abstract

The present invention discloses a reusable anti-shock module and a working method, which includes upper and lower shells, a negative Poisson's ratio material filling layer, a compressed air layer, air guide grooves, sensors and a control assembly. The inside of the module upper cover is provided with a negative Poisson's ratio material filling layer, and between the upper shell and the lower shell is a compressed air layer. A number of air guide grooves are evenly distributed on the bottom plate of the lower shell of the anti-shock module, and the air guide grooves are connected to the sensors and the control assembly. The sensors collect impact data and transmit it to the control assembly, and the control assembly controls the air grooves to increase or decrease pressure. The present invention utilizes the fracture resistance and dent resistance of the negative Poisson's ratio material, and the pressure-adjustable compressed air layer to disperse the impact, reducing the probability and degree of plastic deformation during impact, thereby protecting the components behind the module.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive safety, and particularly relates to a reusable anti-impact module and a working method thereof. Background Art

[0002] With the increasingly widespread use of automobiles, automotive safety issues have become increasingly important. In a collision accident, the violent collision will not only directly cause harm to the vehicle occupants, but may also damage vehicle components such as fuel tanks and batteries, thereby increasing the possibility of secondary harm to the occupants. And currently, all anti-impact modules are passive protection and cannot be actively adjusted, with many limitations. Therefore, it is necessary to design an efficient and actively adjustable protection module for these vehicle components. Summary of the Invention

[0003] In view of the above defects, the present invention provides a reusable anti-impact module, which can reduce the deformation caused by impact and thus protect the vehicle components.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A reusable anti-impact module includes an upper shell and a lower shell that are slidably and snap-fitted with each other. The outer wall surface of the upper shell is the impact-receiving surface, and the inner wall surface is filled with a negative Poisson's ratio material; between the upper shell and the lower shell is a compressed air layer. When being impacted, the upper shell and the lower shell move relative to each other to squeeze the air inside the compressed air layer. The lower shell is provided with a plurality of ventilation holes, and these ventilation holes are connected to a sensor and a control assembly through air grooves, and the control valve in the control assembly controls the decompression and expansion work of the air.

[0006] Preferably, the upper edge and the lower edge of the lower shell are symmetrically provided with limiting devices to limit the relative movement range of the upper shell and the lower shell.

[0007] Preferably, the limiting devices are a plurality of grooves, and rubber sealing rings matching their diameters are fixedly connected in the grooves.

[0008] The present invention also discloses a working method of a reusable anti-impact module. When the anti-impact module is impacted, the control assembly is turned on, and the sensor detects the downward pressing speed data of the upper shell relative to the lower shell and transmits it to the control assembly. It is judged whether the downward pressing speed of the upper shell of the module is decelerating. If it is judged to be yes, the control assembly opens the pressure relief valve to relieve the pressure of the air layer until the sensor detects that the downward pressing speed of the upper shell drops to zero; if it is judged to be no, the control assembly controls the air pump to increase the pressure of the air layer until the sensor detects that the downward pressing speed of the upper shell of the module is decelerating.

[0009] The beneficial effects of the present invention are:

[0010] (1) The anti - impact module disclosed in the present invention is filled with a negative Poisson's ratio material having good fracture resistance and dent resistance, which can minimize the plastic deformation caused after a collision. The cover plate is made of a metal material with an energy - absorbing effect, and is easy to disassemble, install and replace. On the one hand, it ensures the reusability of the module, and on the other hand, it ensures the integrity of the shape and structure of the vehicle interior parts after a collision;

[0011] (2) The anti - impact module disclosed in the present invention uses an adjustable - pressure compressed air layer as a buffer layer. When impacted, it can actively adjust the internal pressure to relieve the impact to the greatest extent. In addition, when the road condition is poor, the compressed air layer can also play a role in shock absorption to a certain extent;

[0012] (3) The anti - impact module disclosed in the present invention applies sensors and a control assembly to actively adjust the pressure, control the air pressure change and pressure relief ability, which can make corresponding protections for different degrees of collisions, improve the working efficiency and anti - impact effect, and can be reused;

[0013] (4) The anti - impact module disclosed in the present invention adopts a modular design. Anti - impact modules of different sizes can be used for different - sized parts, improving the versatility. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments.

[0015] Figure 1 It is the external front view of the anti - impact module structure of an embodiment of the present invention;

[0016] Figure 2 It is the bottom sectional view of the anti - impact module of an embodiment of the present invention;

[0017] Figure 3 It is the left view of the anti - impact module structure of an embodiment of the present invention;

[0018] Figure 4 It is the structure diagram of the upper edge of the lower housing of an embodiment of the present invention;

[0019] Figure 5 It is the control logic diagram of the control assembly of an embodiment of the present invention.

[0020] Reference numerals: 1 - upper housing, 2 - lower housing, 201 - upper edge of the lower housing, 202 - rubber sealing ring, 203 - groove, 3 - negative Poisson's ratio material filling layer, 4 - compressed air layer, 5 - ventilation hole, 6 - air groove, 7 - control assembly, 8 - external bolt of the upper housing, 9 - upper cover. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention provides a reusable anti-impact module, which has optional size specifications and can be spliced and used in multiple pieces. It is applied to the surface of battery packs and important components and can prevent impacts from a certain hemispherical direction.

[0023] As Figures 1 to 3 shown is a reusable anti-impact module. The upper shell 1 of the anti-impact module is the impacted part and is fitted with the lower shell 2. As Figure 3 shown, the inner surface of the upper shell 1 is provided with a negative Poisson's ratio material filling layer 3, and the negative Poisson's ratio material filling layer 3 completely wraps inside the upper shell 1. This filling layer is the first-level protection measure of the anti-impact module, and its anti-breaking and anti-denting properties ensure the integrity of the shape and structure of the components. Between the upper shell 1 and the lower shell 2 is a compressed air layer 4, which is the second-level protection measure of this anti-impact module and plays a buffering role.

[0024] The upper shell is connected to the upper cover 9 by an external bolt 8. The upper cover 9 is a detachable part. When it is deformed by impact, it can be disassembled and assembled to replace parts, so that the anti-impact module can be reused.

[0025] As Figure 2 shown, several ventilation holes 5 are opened at the bottom of the anti-impact module. The ventilation holes 5 are connected to the air grooves 6, and the air grooves 6 are connected to the control assembly 7. Through the ventilation holes 5 and the air grooves 6, the control assembly 7 can adjust the air pressure inside the anti-impact module in real time. In this embodiment, the ventilation holes 5 are respectively distributed at the four diagonals and the center position of the rectangular lower shell, so that the decompression and expansion work of the compressed air layer can be more uniform.

[0026] Between the upper shell 1 and the lower shell 2 of the anti-impact module is a compressed air layer 4, and the upper shell 1 and the lower shell 2 are hermetically connected. As Figure 4 shown, several grooves 203 are provided at the upper edge 201 of the lower shell 2, and rubber sealing rings 202 are installed inside the grooves 203. The upper shell 1 and the lower shell 2 can perform limited relative sliding.

[0027] The air pressure of the compressed air layer 4 of the anti-impact module is controlled by the control assembly 7. The control assembly 7 is equipped with a control valve to control the pressure of the compressed air layer, and actively controls the air pressure change and pressure relief when the anti-impact module is impacted. The sensor collects data and sends it to the control assembly after the impact occurs. The control assembly controls the pressure relief accordingly according to the impact, so as to achieve the effect of protecting the device. Embodiment

[0028] The specific parameters of the shock-proof module designed by the present invention are as follows: the side length of the module is 300 mm, the maximum height is 160 mm, the minimum height is 85 mm, the lengths of the upper and lower housing sleeves are 55 mm, the thickness is 5 mm, the lengths of the lower edge of the upper housing and the upper edge of the lower housing are 10 mm, the thickness is 10 mm, the thickness of the upper housing is 25 mm, the thickness of the negative Poisson's ratio filling layer is 15 mm, and the thickness of the lower housing is 5 mm.

[0029] When a vehicle encounters a collision, its structure may undergo large deformations, and the structural deformations will pose threats to the fuel tank, battery, etc. inside the vehicle. When the deformed structural members are pressed inward, this shock-proof module will play a protective role. The negative Poisson's ratio material filling layer has excellent fracture resistance and dent resistance, and can protect the internal components structurally during a collision, and increase the possibility of multiple uses of the module. The compressed air layer will play an energy absorption and buffering role during a collision, absorbing the collision energy and protecting the internal components. The upper housing cover plate will deform to absorb energy and buffer during a collision. It is designed as a detachable part, which is beneficial for replacement after an accident and for checking the state of the internal negative Poisson's ratio material filling layer.

[0030] As Figure 5 shown, the present invention also discloses a working method of a reusable shock-proof module:

[0031] When a collision occurs, the control assembly is activated, and relative movement occurs between the upper housing and the lower housing of the shock-proof module. At this time, the speed sensor in the module sensor transmits the downward pressure speed data to the control assembly; when it is detected that the upper cover of the module decelerates, the control assembly opens the pressure relief valve to relieve the pressure of the air layer until the sensor detects that the speed of the upper cover drops to zero, at which time it indicates that the impact is over, and the control assembly controls inflation until the upper cover returns to its original position and returns to the initial state; when it is detected that the upper cover of the module does not decelerate, the control assembly controls the air pump to increase the pressure of the air layer until the sensor detects that the downward pressure speed of the upper cover of the module is decelerating.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reusable anti-impact module, characterized in that, It includes an upper shell and a lower shell that are slidably clamped to each other. The outer wall surface of the upper shell is the impact surface, and the inner wall surface is filled with a material with a negative Poisson's ratio. There is a compressed air layer between the upper shell and the lower shell. When impacted, the upper shell and the lower shell move relative to each other to squeeze the air inside the compressed air layer. The lower shell is provided with a number of ventilation holes, which are connected to the sensor and the control assembly through air grooves. The control valve set by the control assembly controls the decompression and expansion work of the air in the compressed air layer, and actively controls the air pressure increase and pressure relief when the anti-impact module is impacted. The sensor collects data after the impact and sends it to the control assembly. The control assembly actively adjusts the pressure according to the impact, controls the air pressure change, and controls the pressure relief ability to control the pressure relief accordingly. Among them, when a collision occurs, the control assembly controls the inflation or opens the pressure relief valve according to the downward pressing speed data of the upper shell.

2. The reusable impact protection module according to claim 1, characterized in that, Limit devices are symmetrically arranged at the upper edge and the lower edge of the lower shell to limit the relative movement range of the upper shell and the lower shell.

3. The reusable anti-impact module according to claim 2, wherein The limit device includes a number of grooves, and a rubber sealing ring matching its diameter is fixedly connected in the grooves.

4. The working method of the reusable anti-impact module according to claim 3, characterized in that, When the anti-impact module is impacted, the control assembly is turned on. The sensor detects the downward pressing speed data of the upper shell relative to the lower shell and transmits it to the control assembly. It judges whether the downward pressing speed of the upper shell of the judgment module is decelerated. If it is judged to be yes, the control assembly opens the pressure relief valve to relieve the pressure of the air layer until the sensor detects that the downward pressing speed of the upper shell drops to zero; if it is judged to be no, the control assembly controls the air inflation pump to increase the pressure of the air layer until the sensor detects that the downward pressing speed of the upper shell of the module is decelerated.

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