Explosion-proof touch screen structure for electrical equipment

Abstract

The utility model discloses a structure is prevented to explosion for electrical equipment, including the explosion -proof protection layer, touch function layer, sealed buffer layer and equipment adaptation layer that set up in turn, the explosion -proof protection layer adopts the explosion -proof toughened glass base material, and the base material surface is plated with DLC coating, the touch function layer includes the flexible touch -sensitive substrate, nanometer silver conductive layer and explosion -proof circuit layer that set up in turn and connect gradually from top to bottom, the sealed buffer layer adopts silica gel buffer pad, the equipment adaptation layer adopts aluminum alloy sheet material, first, through the layering impact -resistant structure of explosion -proof toughened glass and silica gel closed cell buffer pad, will concentrated impact force gradually absorbs, disperses, reduces the risk of screen and burst because of impact, second, through fluorine rubber seal ring and closed cell silica gel pad form the isolation structure, block dust from the edge and the gap of adhesion into touch function layer, eliminate the touch -control malfunction caused by dust accumulation, guarantee the long -term stable interaction of electrical equipment in the dust environment.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment display and interaction technology, and in particular to an explosion-proof touch screen structure for electrical equipment. Background Technology

[0002] Most touchscreens used in current electrical equipment are based on conventional consumer electronics designs. While they can achieve basic touch functions, they have significant shortcomings in special scenarios such as industry, mining, and chemical industries.

[0003] Electrical equipment often faces problems such as dust accumulation and mechanical impact (such as equipment handling and collisions during on-site operation). Existing touch screens mostly use the basic protection methods of consumer electronics, which only achieve simple scratch resistance through ordinary surface coatings, but lack sealing for dust and cushioning design to absorb impacts. As a result, conventional touch screens are prone to breakage due to impacts, and dust entering the screen can cause touch failure.

[0004] To address the aforementioned deficiencies, an explosion-proof touchscreen structure for electrical equipment is provided. Utility Model Content

[0005] The purpose of this utility model is to propose an explosion-proof touch screen structure for electrical equipment in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an explosion-proof touch screen structure for electrical equipment, comprising an explosion-proof protective layer, a touch function layer, a sealing buffer layer and an equipment adapter layer stacked sequentially, with each layer fixed by an explosion-proof adhesive structure; The explosion-proof protective layer is made of explosion-proof tempered glass substrate, and the surface of the substrate is coated with DLC coating. The touch function layer includes a flexible touch substrate, a nano-silver conductive layer and an explosion-proof circuit layer that are stacked and connected from top to bottom. The sealing buffer layer is made of silicone buffer pad, and the inside of the silicone buffer pad is a uniformly distributed closed-cell bubble structure. The device adapter layer is made of aluminum alloy sheet, and the surface of the sheet is anodized.

[0007] Preferably, the edge of the explosion-proof protective layer is wrapped with a fluororubber sealing ring.

[0008] Preferably, the flexible touch substrate is made of PI substrate.

[0009] Preferably, one end of the nano-silver conductive layer is connected to the main control circuit of the electrical equipment via an explosion-proof flexible cable.

[0010] Preferably, the nano-silver conductive layer is composed of nano-silver wires, and the nano-silver wires are filled with graphene nanosheets.

[0011] Preferably, the circuit traces of the explosion-proof circuit layer are made of copper-nickel alloy, and the circuit surface is covered with a layer of polytetrafluoroethylene insulating film.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this application, the layered impact-resistant structure of explosion-proof tempered glass and silicone closed-cell buffer pads gradually absorbs and disperses the concentrated impact force generated by handling and operational collisions. This significantly reduces the risk of the screen shattering due to mechanical impact.

[0013] 2. In this application, a dust and moisture isolation structure is formed by a fluororubber sealing ring and a closed-cell silicone pad, which prevents dust from entering the touch functional layer from the edges and the bonding gaps, eliminates touch failure caused by dust accumulation, and ensures long-term stable interaction of electrical equipment in dusty environments. Attached Figure Description

[0014] Figure 1 A partial explosion diagram of the explosion-proof touch screen structure provided according to an embodiment of the present invention is shown; Figure 2 A cross-sectional schematic diagram of the touch function layer provided according to an embodiment of the present invention is shown; Figure 3 A cross-sectional view of a fluororubber sealing ring provided according to an embodiment of the present invention is shown.

[0015] Legend: 1. Explosion-proof protective layer; 101. DLC coating; 2. Touch function layer; 201. Flexible touch substrate; 202. Nano silver conductive layer; 203. Explosion-proof circuit layer; 3. Sealing buffer layer; 4. Equipment adapter layer; 5. Fluororubber sealing ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: an explosion-proof touch screen structure for electrical equipment, comprising an explosion-proof protective layer 1, a touch function layer 2, a sealing buffer layer 3 and an equipment adapter layer 4 stacked in sequence, with each layer fixed by an explosion-proof adhesive structure.

[0018] The explosion-proof bonding structure uses a two-component flame-retardant epoxy adhesive, which is screen-printed into a continuous adhesive frame. After curing, it forms a sealed adhesive wall that is conductive, heat-resistant, and has high peel strength, bonding the explosion-proof protective layer 1, the touch function layer 2, the sealing buffer layer 3, and the equipment adapter layer 4.

[0019] The DLC coating 101 (a diamond-like carbon film with a hardness close to that of diamond, used for scratch resistance, wear resistance, and friction reduction) on the surface of the explosion-proof protective layer 1 first absorbs the scratches and frictional heat from sharp objects, reducing mechanical damage. Once an impact occurs, the impact force is first concentrated on the high-hardness explosion-proof tempered glass, and the energy is dispersed to the entire panel through the propagation of micro-cracks, avoiding the formation of a through-hole.

[0020] The touch function layer 2 includes a flexible touch substrate 201, a nano-silver conductive layer 202, and an explosion-proof circuit layer 203, which are stacked and connected sequentially from top to bottom.

[0021] After the explosion-proof protective layer 1 withstands the impact, the remaining shock wave is transmitted downwards, and the flexible touch substrate 201 uses its own bendable properties to generate slight deformation to prevent brittle fracture. The nano-silver conductive layer 202 maintains a continuous conductive path during deformation.

[0022] The sealing buffer layer 3 uses a silicone buffer pad, and the inside of the silicone buffer pad has a uniformly distributed closed-cell bubble structure.

[0023] The closed-cell air bubbles within the silicone pad undergo elastic bending under pressure, while the closed-cell structure simultaneously cuts off continuous channels for dust and moisture. The "uniformly distributed closed-cell air bubble structure" within the silicone cushioning pad is a known integrated cushioning-sealing solution in the art. By utilizing this existing structure, the aim is to leverage its material properties to provide stable elastic support and sealing for explosion-proof touchscreens. Further description of the bubble morphology within the cushioning pad itself is omitted here.

[0024] The equipment adapter layer 4 is made of aluminum alloy sheet, and the surface of the sheet is anodized.

[0025] Anodized aluminum alloy plates provide rigid boundaries, preventing deformation from propagating further inward. Explosion-proof threaded holes engage with copper plugs, withstanding pressure without loosening and ensuring the integrity of the casing.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, the edge of the explosion-proof protective layer 1 is wrapped with a fluororubber sealing ring 5.

[0027] When the explosion-proof tempered glass substrate is impacted, the fluororubber sealing ring 5 first disperses the concentrated stress at the edge to the elastomer, reducing edge chipping. Simultaneously, it fills the gap between the glass and the underlying layer, preventing dust and moisture from entering from the side. The sealing ring has an "L"-shaped cross-section, which not only fits tightly against the edge of the explosion-proof protective layer 1 but also forms a double seal against the inner wall of the electrical equipment housing.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the flexible touch substrate 201 is made of PI substrate; one end of the nano-silver conductive layer 202 is connected to the main control circuit of the electrical equipment through an explosion-proof flexible cable; the nano-silver conductive layer 202 is composed of nano-silver wires, and the nano-silver wires are filled with graphene nanosheets; the circuit traces of the explosion-proof circuit layer 203 are made of copper-nickel alloy material, and the circuit surface is covered with a layer of polytetrafluoroethylene insulating film.

[0029] The flexible touch substrate 201 has a polyimide (PI) film as its framework, which can be repeatedly bent and deforms without breaking upon impact. Interwoven silver nanowires form a three-dimensional network, providing the main conductive channels. Graphene nanosheets fill the gaps between the silver nanowires. When the flexible touch substrate 201 is stretched or microcracks appear locally, the graphene sheets can still maintain electrical contact, reducing the probability of sudden resistance changes. Even if the screen cracks, the power will not be interrupted.

[0030] The wires of the explosion-proof circuit layer 203 are made of copper-nickel alloy, which is not easily melted under the instantaneous temperature rise of a short circuit or high ambient temperature, reducing the risk of ignition. The circuit surface is then covered with a layer of polytetrafluoroethylene (PTFE) insulating film. Even if the internal alloy wires overheat for a short time, the outer insulation layer will not decompose or ignite. At the same time, the PTFE insulating film has extremely low surface energy, making it difficult for dust and moisture to adhere, thus maintaining long-term insulation resistance.

[0031] The explosion-proof circuit layer 203 uses copper-nickel alloy wiring and is covered with polytetrafluoroethylene insulating film, which makes it less likely to melt under instantaneous stretching or high temperature.

[0032] The equipment adapter layer 4 has explosion-proof threaded holes on its edge, and copper explosion-proof plugs are installed in the holes. The equipment adapter layer 4 is fixed to the electrical equipment housing by explosion-proof bolts.

[0033] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An explosion-proof touchscreen structure for electrical equipment, characterized in that, It includes an explosion-proof protective layer (1), a touch function layer (2), a sealing buffer layer (3), and an equipment adapter layer (4) stacked in sequence, with each layer fixed by an explosion-proof adhesive structure; The explosion-proof protective layer (1) is made of explosion-proof tempered glass substrate, and the substrate surface is coated with DLC coating (101). The touch function layer (2) includes a flexible touch substrate (201), a nano silver conductive layer (202), and an explosion-proof circuit layer (203) that are stacked from top to bottom. The sealing buffer layer (3) is made of silicone buffer pad, and the silicone buffer pad has a uniformly distributed closed-cell bubble structure inside. The device adapter layer (4) is made of aluminum alloy sheet, and the surface of the sheet is anodized.

2. The explosion-proof touchscreen structure for electrical equipment according to claim 1, characterized in that, The edge of the explosion-proof protective layer (1) is wrapped with a fluororubber sealing ring (5).

3. The explosion-proof touchscreen structure for electrical equipment according to claim 1, characterized in that, The flexible touch substrate (201) is made of PI substrate.

4. The explosion-proof touchscreen structure for electrical equipment according to claim 1, characterized in that, One end of the nano-silver conductive layer (202) is connected to the main control circuit of the electrical equipment via an explosion-proof flexible cable.

5. The explosion-proof touchscreen structure for electrical equipment according to claim 4, characterized in that, The nano-silver conductive layer (202) is composed of nano-silver wires, and the nano-silver wires are filled with graphene nanosheets.

6. The explosion-proof touchscreen structure for electrical equipment according to claim 1, characterized in that, The circuit traces of the explosion-proof circuit layer (203) are made of copper-nickel alloy, and the circuit surface is covered with a layer of polytetrafluoroethylene insulating film.

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