A gunfire impact-proof glass mechanism and vehicle

Abstract

The present invention belongs to the technical field of automotive glass, and specifically discloses a glass mechanism and a vehicle that is resistant to artillery fire impact. The glass mechanism includes a glass component, an impact force sensing component and a recoil force component. The glass component includes a PET layer and a wear-resistant layer; the impact force sensing component includes a plurality of protrusions uniformly arranged on the PET layer, an electrode layer and an impact force sensor arranged on the side of the wear-resistant layer facing the protrusions, the protrusions are coated with a conductive material, and the conductive material and the electrode layer are arranged at intervals. After the PET layer is subjected to an impact force, the protrusions are squeezed, and the contact area between the conductive material on the protrusion and the electrode layer changes, which will generate a current change. The impact force sensor detects the current change and calculates the impact force value according to the current change. The above-mentioned glass mechanism is installed on the vehicle. The present invention can apply a counter-impact force to the glass component according to the impact force to balance or weaken the impact force on the glass component.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle glass, and more specifically, relates to a gunfire impact resistant glass structure and a vehicle. Background Art

[0002] Vehicle-mounted guns are a type of conventional weapon that has developed very rapidly in recent years. They are mainly used for fire suppression and destroying enemy positions. Under normal conditions, guns use heavy chassis, such as tracked heavy chassis, and are rarely mounted on light or medium vehicles. The biggest problem that vehicle-mounted guns need to solve is the huge shock wave emitted by the muzzle when the gun is fired, which will have a very serious impact on the vehicle. How to solve the impact of the vehicle on the shock wave of the gun has always been a difficult problem. In particular, when the gun muzzle is very close to the door glass of the vehicle, and it cannot be avoided due to the overall layout, it cannot be effectively solved.

[0003] Based on the above defects and deficiencies, this field urgently needs to propose a new type of artillery fire impact-resistant glass, construct a glass structure that is resistant to artillery fire impact, and avoid the situation where the artillery muzzle is very close to the door glass of the vehicle and cannot be avoided due to the overall layout reasons. The glass can actively resist the impact force of artillery fire. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a glass mechanism and vehicle that is resistant to artillery fire impact, wherein a glass mechanism that is resistant to artillery fire impact is designed in combination with the characteristics of the vehicle glass itself and its process characteristics of resisting the impact force of artillery fire, and the structure and specific setting methods of its key components such as glass components, impact force sensing components and recoil force components are studied and designed, which can effectively solve the problem of glass being damaged by impact when the distance between the gun muzzle and the vehicle door glass is very close. At the same time, the present invention can detect the impact force received by the glass component, and apply a counter-impact force to the glass component according to the impact force to balance or weaken the impact force received by the glass component. In this way, the artillery fire impact is actively resisted to avoid the huge shock wave emitted by the muzzle when the artillery is fired from causing a very serious impact on the vehicle. Therefore, it is particularly suitable for combat vehicles.

[0005] To achieve the above object, according to one aspect of the present invention, a fire-proof glass mechanism is provided, wherein the glass mechanism is arranged on a mounting frame of a vehicle window, and comprises a glass assembly, an impact force sensing assembly and a recoil force assembly, wherein:

[0006] The glass component is provided with a PET layer and a wear-resistant layer in sequence from the outside of the vehicle to the inside of the vehicle;

[0007] The impact force sensing component is arranged between the PET layer and the wear-resistant layer, and includes a plurality of protrusions uniformly arranged on the PET layer, an electrode layer and an impact force sensor arranged on the side of the wear-resistant layer facing the protrusions, the protrusions are coated with a conductive material, and the conductive material and the electrode layer are arranged at intervals. When the PET layer is subjected to an impact force, the protrusions are squeezed, and the contact area between the conductive material on the protrusion and the electrode layer changes, which will generate a current change. The impact force sensor detects the current change and calculates the impact force value according to the current change.

[0008] The recoil force component is used to apply a recoil force to the PET layer according to the impact force value, so as to balance or weaken the impact force exerted on the PET layer.

[0009] As further preferred, the protrusion is made of a flexible inorganic material or a flexible polymer material.

[0010] As a further preference, the height of the protrusion is not greater than 100 microns.

[0011] As further preferred, the recoil force component includes a controller and an accumulator, and the controller controls the accumulator to charge a buffer between the PET layer and the wear-resistant layer according to the impact force value to balance or weaken the impact force exerted on the PET layer.

[0012] As further preferred, the buffer is a gas or a liquid without a conductive function.

[0013] As further preferred, the glass assembly further comprises a pressure-sensitive adhesive film layer, a high-strength glass layer and a common glass layer which are connected in sequence, and a side of the pressure-sensitive adhesive film layer which is not connected to the high-strength glass layer is connected to the wear-resistant layer.

[0014] As further preferred, the thickness of the PET layer is 0.2 mm to 0.5 mm;

[0015] The thickness of the wear-resistant layer is 0.05 mm to 0.2 mm;

[0016] The thickness of the pressure-sensitive adhesive film layer is 0.05 mm to 0.2 mm;

[0017] The thickness of the high-strength glass layer is 5 mm to 8 mm.

[0018] As further preferred, the high-strength glass layer is connected to the ordinary glass layer via a first adhesive layer, the ordinary glass layer comprises a first ordinary glass layer and a second ordinary glass layer, and the first ordinary glass layer and the second ordinary glass layer are connected via a second adhesive layer.

[0019] As a further preference, a sealant is provided on the periphery of the glass assembly.

[0020] According to another aspect of the present invention, there is also provided a vehicle equipped with the above-mentioned gunfire impact protection glass mechanism.

[0021] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0022] 1. The present invention studies and designs the structure and specific setting methods of its key components such as glass components, impact force sensing components and recoil force components, which can effectively solve the problem of glass damage when the distance between the gun muzzle and the vehicle door glass is very close. At the same time, the present invention can detect the impact force on the glass component and apply a counter-impact force to the glass component according to the impact force to balance or weaken the impact force on the glass component. In this way, the impact of artillery fire is actively resisted to avoid the huge shock wave emitted by the muzzle when the artillery is fired. The vehicle has a very serious impact. Therefore, it is particularly suitable for combat vehicles.

[0023] 2. The protrusion of the present invention is a flexible inorganic material or a flexible polymer material with a height of no more than 100 microns. It undergoes flexible deformation within the deformation range of the PET layer, and generates current changes through the size of its contact area with the electrode layer and the change of the contact area. The impact force value is calculated based on the current change, thereby providing a basis for the counter-impact force provided in subsequent implementation.

[0024] 3. The controller of the present invention controls the accumulator to fill the buffer between the PET layer and the wear-resistant layer according to the impact force value, so as to balance or weaken the impact force on the PET layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a gunfire impact-proof glass mechanism involved in a preferred embodiment of the present invention;

[0026] Figure 2 It is a partial structural schematic diagram of a gunfire impact protection glass mechanism involved in a preferred embodiment of the present invention.

[0027] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-installation frame, 2-wear-resistant layer, 3-PET layer, 4-pressure-sensitive adhesive film layer, 5-adhesive layer, 6-high-strength glass layer, 7-first adhesive layer, 8-first ordinary glass layer, 9-second adhesive layer, 10-second ordinary glass layer, 11-sealant, 12-controller, 13-accumulator, 14-impact force sensor, 15-protrusion, 16-electrode layer, 17-buffer. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a glass mechanism for preventing artillery fire from impacting, comprising a glass assembly, an impact force sensing assembly and a recoil force assembly. The impact force sensing assembly is used to detect the impact force on the glass assembly, and the recoil force assembly is used to apply a counter-impact force to the glass assembly according to the impact force, so as to balance or weaken the impact force on the glass assembly, so as to actively resist artillery fire impact and avoid the huge shock wave emitted by the muzzle when the artillery is fired from causing a very serious impact on the vehicle.

[0031] like Figure 1 As shown, the glass component is arranged on the mounting frame 1 of the vehicle window, and the glass component includes a PET layer 3 and a wear-resistant layer 2 arranged in sequence from the outside of the vehicle to the inside of the vehicle; the impact force sensing component is arranged between the PET layer 3 and the wear-resistant layer 2, and the impact force sensing component includes a plurality of protrusions uniformly arranged on the PET layer 3, an electrode layer and an impact force sensor arranged on the side of the wear-resistant layer 2 facing the protrusions, the protrusions are coated with a conductive material, and the conductive material and the electrode layer are arranged at intervals. After the PET layer 3 is subjected to impact force, the protrusions are squeezed, and the change in contact area between the conductive material on the protrusion and the electrode layer will generate a change in current. The impact force sensor detects the change in current and calculates the impact force value according to the change in current; the recoil force component is used to apply a recoil force to the PET layer 3 according to the impact force value to balance or weaken the impact force on the PET layer 3.

[0032] In a specific embodiment of the present invention, the thickness of the PET layer 3 is 0.2 mm to 0.5 mm, and the PET layer 3 is made of polyethylene terephthalate.

[0033] In one embodiment of the present invention, the preparation method of the PET layer 3 comprises: placing the PET in a dehumidifying dryer at a temperature of 140°C and drying for 4 hours. Then the dried PET, hollow glass microspheres, toughening agent, compatibilizer, etc. are added to the agitator in proportion and stirred evenly. On a twin-screw extruder, the above-mentioned uniformly mixed PET and hollow glass microsphere composite material is extruded and film-formed. The extrusion temperature is preferably 200-280°C, and the screw speed is 621r / min. Adding an appropriate amount of hollow glass microspheres to PET can improve the mechanical properties of PET. Preferably, the addition amount of hollow glass microspheres is 1% to 3% of the mixture of PET and hollow glass microspheres. More specifically, the diameter of the hollow glass microspheres is not more than 0.2mm, and preferably, the diameter of the hollow glass microspheres is 0.1mm.

[0034] In one embodiment of the present invention, the preparation method of the PET layer 3 includes: adding glass fiber and PET compatibilizer into a reaction tank, performing a grafting reaction, and obtaining a glass fiber / PET copolymer. Adding the glass fiber / PET copolymer into a twin-screw extruder, melting at a temperature of 200 to 280° C., and then extruding and granulating to obtain the PET layer 3.

[0035] It should be noted that the preparation method of the PET layer 3 in the present invention can also adopt other means in the prior art, which can meet the requirements of impact resistance and certain deformation ability, and will not be listed one by one in the present invention.

[0036] In a specific embodiment of the present invention, the impact force sensing component includes a plurality of protrusions uniformly arranged on the PET layer 3, an electrode layer and an impact force sensor arranged on the side of the wear-resistant layer 2 facing the protrusions, the protrusions are coated with a conductive material, and the conductive material and the electrode layer are arranged at intervals, the PET layer 3 squeezes the protrusions after receiving the impact force, and the change in the contact area between the conductive material on the protrusion and the electrode layer will generate a change in current, and the impact force sensor detects the change in current and calculates the impact force value according to the change in current. More specifically, in the present invention, the plurality of protrusions are micro-nano flexible structures, which are deformed when squeezed, and when the contact area between the conductive material on its surface and the electrode layer changes, current changes are generated at both ends of the electrode layer. By measuring the change in current, the degree of deformation of the protrusions can be known, and the impact force on the PET layer 3 is calculated according to the degree of deformation of the protrusions. The present invention improves the overall glass structure's resistance to artillery impact by actively offsetting and balancing the impact force. In one embodiment of the present invention, the height of all protrusions is the same, not more than 100 microns, in this way, when subjected to artillery shock waves, the deformation position and deformation degree of the protrusions can be consistent with the stress and deformation characteristics of the PET layer 3, in this way, the recoil component provides the corresponding recoil force in time, and the recoil force will not be too large or too small. In the present invention, the protrusions are flexible inorganic materials or flexible polymer materials, and the conductive material is graphene oxide, and can also be other conductive materials including carbon nanotubes, conductive metals, conductive polymers and other conductive materials. The conductive material in the present invention is any one of the highly conductive composite materials composed of Au or platinum, silver, nickel, copper, carbon nanotubes, graphene, etc.

[0037] In another embodiment of the present invention, the recoil force assembly includes a controller and an accumulator, and the controller controls the accumulator to release a buffer according to the impact force value to balance and offset the impact force. In one embodiment of the present invention, the accumulator includes an energy storage tank for placing a buffer and a buffer transmission pipeline, and a first one-way valve is also provided on the buffer transmission pipeline. When the glass mechanism is impacted by artillery fire, the controller controls the first one-way valve to open, and the buffer in the energy storage tank is filled between the PET layer 3 and the wear-resistant layer 2, and a counter-impact force is applied to the PET layer 3 to balance and offset the impact force. As a further preferred embodiment, the accumulator also includes an oil return transmission pipeline, and a second one-way valve is provided on the oil return transmission pipeline, which is used to open when the counter-impact force provided by the buffer is greater than the impact force to release a specified portion of the buffer.

[0038] In another embodiment of the present invention, the buffer is a gas or a liquid without a conductive function. Furthermore, the greater the compressibility of the buffer, the better. Generally speaking, the compressibility of the buffer in the present invention shall not be less than 95%.

[0039] As a preferred embodiment of the present invention, the present invention also includes a PID controller, which generates an expected value of the recoil force based on the actual impact force value, and adjusts the output amount of the accumulator buffer in real time according to the actual value of the recoil force output by the recoil force component, so that the actual value of the recoil force output by the recoil force component is consistent with the expected value of the recoil force.

[0040] More specifically, in the present invention, the PID controller includes a proportional controller and a fractional-order extended state observer. The expected value of the back-impact force is the input reference signal of the PID controller, the actual value of the back-impact force is the output signal of the PID controller, the input reference signal is compared with the system output signal, the PID controller error is obtained, the PID controller error is used as the input signal of the proportional controller in the PID controller, the control rate is obtained, the expected value of the back-impact force is regarded as a transfer function of a pure fractional-order integral, the part of the expected value of the back-impact force other than the transfer function of the pure fractional-order integral is regarded as a disturbance, and the disturbance is observed by a fractional-order extended state observer to obtain the observed value of the disturbance, the disturbance is estimated, the gain estimation of the expected value of the back-impact force is obtained, and the disturbance is compensated in real time according to the control rate and the observed value of the disturbance, so that the actual value of the back-impact force output by the back-impact component is consistent with the expected value of the back-impact force.

[0041] like Figure 2 As shown, the glass assembly further includes a pressure-sensitive adhesive film layer 4 , a high-strength glass layer 6 and a common glass layer connected in sequence, and the side of the pressure-sensitive adhesive film layer 4 not connected to the high-strength glass layer 6 is connected to the wear-resistant layer 2 .

[0042] As a preferred embodiment of the present invention, the thickness of the wear-resistant layer 2 is 0.05 mm to 0.2 mm; the thickness of the pressure-sensitive adhesive film layer 4 is 0.05 mm to 0.2 mm; and the thickness of the high-strength glass layer 6 is 5 mm to 8 mm.

[0043] As a preferred embodiment of the present invention, the high-strength glass layer 6 is connected to the ordinary glass layer through a first adhesive layer 7, and the ordinary glass layer includes a first ordinary glass layer 8 and a second ordinary glass layer 10, and the first ordinary glass layer 8 and the second ordinary glass layer 10 are connected through a second adhesive layer 9.

[0044] As a preferred embodiment of the present invention, a sealant 11 is provided on the periphery of the glass assembly.

[0045] Correspondingly, the present invention also provides a vehicle, the vehicle window of which is equipped with the above-mentioned anti-gunfire impact glass mechanism. The impact force sensing component is used to detect the impact force on the glass component, and the recoil force component is used to apply a recoil force to the glass component according to the impact force to balance or weaken the impact force on the glass component, in this way, the gunfire impact is actively resisted to avoid the huge shock wave emitted by the muzzle when the gun is fired, which has a very serious impact on the vehicle.

[0046] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire-proof glass structure, characterized in that: It includes a glass component, an impact force sensing component and a recoil force component, wherein: The glass assembly is arranged on a mounting frame (1) of a vehicle window, and the glass assembly comprises a PET layer (3) and a wear-resistant layer (2) arranged in sequence from the outside of the vehicle to the inside of the vehicle; The impact force sensing component is arranged between the PET layer (3) and the wear-resistant layer (2), and comprises a plurality of protrusions uniformly arranged on the PET layer (3), an electrode layer arranged on the side of the wear-resistant layer (2) facing the protrusions, and an impact force sensor, wherein the protrusions are coated with a conductive material, and the conductive material and the electrode layer are arranged at intervals, and when the PET layer (3) is subjected to an impact force, the protrusions are squeezed, and a change in the contact area between the conductive material on the protrusions and the electrode layer will generate a change in current, and the impact force sensor detects the change in current and calculates the impact force value according to the change in current; The recoil force component is used to apply a recoil force to the PET layer (3) according to the impact force value, so as to balance or weaken the impact force exerted on the PET layer (3).

2. The artillery fire impact resistant glass structure according to claim 1, characterized in that: The protrusions are made of flexible inorganic material or flexible polymer material.

3. The artillery fire impact resistant glass structure according to claim 1, characterized in that: The height of the protrusion is no greater than 100 microns.

4. The artillery fire impact resistant glass structure according to claim 1, characterized in that: The recoil force component comprises a controller and an accumulator, wherein the controller controls the accumulator to charge a buffer between the PET layer (3) and the wear-resistant layer (2) according to the impact force value, so as to balance or weaken the impact force exerted on the PET layer (3).

5. The artillery fire impact resistant glass structure according to claim 4, characterized in that: The buffer is a gas or a liquid without a conductive function.

6. The artillery fire impact resistant glass structure according to any one of claims 1 to 5, characterized in that: The glass assembly further comprises a pressure-sensitive adhesive film layer (4), a high-strength glass layer (6), and a common glass layer connected in sequence, and the side of the pressure-sensitive adhesive film layer (4) not connected to the high-strength glass layer (6) is connected to the wear-resistant layer (2).

7. The fire-proof glass structure according to claim 6, characterized in that: The thickness of the PET layer (3) is 0.2 mm to 0.5 mm; The thickness of the wear-resistant layer (2) is 0.05 mm to 0.2 mm; The thickness of the pressure-sensitive adhesive film layer (4) is 0.05 mm to 0.2 mm; The thickness of the high-strength glass layer (6) is 5 mm to 8 mm.

8. The artillery fire impact resistant glass structure according to claim 6, characterized in that: The high-strength glass layer (6) is connected to the ordinary glass layer via a first adhesive layer (7); the ordinary glass layer comprises a first ordinary glass layer (8) and a second ordinary glass layer (10); and the first ordinary glass layer (8) and the second ordinary glass layer (10) are connected via a second adhesive layer (9).

9. The artillery fire impact resistant glass structure according to claim 1, characterized in that: A sealant (11) is provided on the outer periphery of the glass assembly.

10. A vehicle equipped with the gunfire impact protection glass mechanism according to any one of claims 1 to 9.

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