Color film switch structure for preventing low-temperature air closure

Abstract

A color film switch structure for preventing low-temperature air closure comprises a color film panel layer, an adhesive air guide layer, a conductive circuit layer, an anti-optical crosstalk isolation layer and a light source emission layer, and the color film panel layer is provided with bump keys for touch control; the adhesive air guide layer is arranged below the color film panel layer and consists of adhesive tapes which are distributed in parallel; the conductive circuit layer is arranged below the adhesive gas guide layer; the optical crosstalk prevention isolation layer is arranged below the conductive circuit layer and is used for separating the bump keys so as to prevent light in different areas from generating interference; the light source emission layer is arranged on the anti-crosstalk isolation layer and is used for providing a light source for the bump key. By increasing the number of the air ducts between the color film panel layer and the conductive circuit layer, the phenomenon of negative pressure air closure in the color film switch in a low-temperature environment is avoided, and meanwhile, the air guide grooves formed in the optical crosstalk prevention isolation layer can also prevent negative pressure air closure from being generated in the space defined by the conductive circuit layer and the light source emission layer.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane switches, in particular to a color membrane switch structure for preventing low-temperature air closure. Background Art

[0002] Membrane switch, also known as touch keyboard, adopts an overall sealed structure composed of a flat multi-layer combination. It is a new type of electronic component that integrates light, machinery and electricity, and seals the key switch, panel, mark, symbol display and lining together. It is a fundamental change in the appearance structure of electronic products. It can replace the keys of conventional discrete components and perform the tasks of the operating system more reliably. Membrane switch has good waterproof, dustproof, oil-proof, and anti-corrosion of harmful gases, stable and reliable performance, light weight, small size, long life, easy assembly, the panel can be washed without damage to the characters, rich colors, beautiful appearance and other advantages. It is widely used in electronic communications, electronic measurement instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.

[0003] Color film switch is a type of membrane switch. By adding a colored mask or light source, the buttons of the membrane switch are easier to identify and distinguish. As people's requirements for the comfort of using electronic technology products increase, the application of color film switches is becoming more and more extensive. The traditional color film switch structure can no longer meet the use needs, especially in low temperature environments. The color film panel layer and the conductive circuit layer of the color film switch are prone to form a negative pressure air seal, resulting in abnormal on and off of the color film switch.

[0004] Therefore, in view of the deficiencies in the prior art, the utility model designs a color film switch structure for preventing low-temperature air closure to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0006] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present utility model is to provide a color film switch structure for preventing low-temperature air closure, by increasing the number of air channels in the connecting glue layer of the color film switch to avoid the problem of internal negative pressure air closure during use at low temperatures, thereby improving the stability of the switch.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a color film switch structure for preventing low-temperature air closure, comprising a color film panel layer, an adhesive gas guide layer, a conductive circuit layer, an anti-cross-light isolation layer and a light source emission layer, wherein:

[0008] The color film panel layer is provided with bump buttons for touch control;

[0009] The adhesive gas guide layer is arranged below the color film panel layer, and is composed of parallel and spaced adhesive strips, which are used to provide an adhesive connection while avoiding negative pressure air closure inside;

[0010] The conductive circuit layer is arranged below the adhesive gas conducting layer, and is used to cooperate with the color film panel layer to control the on and off of the circuit;

[0011] The anti-cross-light isolation layer is set below the conductive circuit layer to separate the bump buttons to avoid interference between lights in different areas;

[0012] The light source emitting layer is arranged on the anti-cross-light isolation layer, and is used to provide a light source for the bump button.

[0013] The preferred technical solution is that the adhesive strip corresponding to the periphery of the convex button is provided with a longitudinal fracture for ventilation.

[0014] The preferred technical solution is: a gas-conducting groove for connecting the inside and the outside is provided on one side of the anti-cross-light isolation layer close to the light source emission layer.

[0015] The preferred technical solution is: the material of the anti-cross-light isolation layer is foam glue.

[0016] The preferred technical solution is: the thickness of the adhesive strip is 0.05 mm to 0.10 mm, which avoids negative pressure air closure while ensuring the sensitivity of the color film switch.

[0017] The preferred technical solution is: the top of the convex button is a flat pressing structure, and the periphery of the flat pressing structure is connected to the color film panel layer through an arc-shaped rebound structure.

[0018] The preferred technical solution is: light sources of different colors are provided at the corresponding convex buttons on the light source emission layer.

[0019] Due to the application of the above-mentioned technical scheme, the utility model provides a color film switch structure for preventing low-temperature air closure, which uses adhesive strips to increase the number of air channels between the color film panel layer and the conductive circuit layer to avoid negative pressure air closure inside the color film switch in a low-temperature environment, and has basically no effect on the thickness of the color film switch. At the same time, the air guide grooves opened on the anti-cross-light isolation layer can also prevent negative pressure air closure from occurring in the space enclosed by the conductive circuit layer and the light source emission layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a color film switch structure for preventing low-temperature air lock in the utility model;

[0021] Figure 2 for Figure 1A partial enlarged view of the middle A;

[0022] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0023] Figure 4 for Figure 1 A partial enlarged view of point C in the middle.

[0024] In the above drawings, 1, color film panel layer; 11, bump button; 11a, flat pressing structure; 11b, arc-shaped rebound structure; 2, adhesive air guide layer; 21, adhesive strip; 21a, fracture; 3, conductive circuit layer; 4, anti-cross-light isolation layer; 41, air guide groove; 5, light source emission layer. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" 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, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and 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.

[0028] like Figure 1 As shown, the utility model discloses a color film switch structure for preventing low-temperature air closure, including a color film panel layer 1, an adhesive gas guide layer 2, a conductive circuit layer 3, an anti-cross-light isolation layer 4 and a light source emission layer 5. The main components of the utility model are described in detail below:

[0029] like Figure 1 and Figure 2 As shown, a bump button 11 for touch control is provided on the color film panel layer 1, and the top of the bump button 11 is a plane pressing structure 11a. The periphery of the plane pressing structure 11a is connected to the color film panel layer 1 through an arc-shaped rebound structure 11b. The plane pressing structure 11a has a better touch and is not prone to indentation, thereby improving the rebound performance of the bump button 11.

[0030] like Figure 1 and Figure 3 As shown, the adhesive air guide layer 2 is arranged below the color film panel layer 1, and is composed of parallel distributed adhesive strips 21 to form a plurality of air channels, which can provide an adhesive connection while avoiding negative pressure air closure inside.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the adhesive strip 21 is provided with longitudinal cutouts 21a on the periphery of the bump button 11 to form a longitudinal airway, and the thickness of the adhesive strip 21 is 0.05 mm to 0.10 mm. It should be noted that the above structure is merely exemplary and not restrictive. In this embodiment, there is only one longitudinal airway formed by the cutouts 21a, but in other embodiments, multiple cutouts 21a may form multiple airways. In this embodiment, the thickness of the adhesive strip 21 is 0.05 mm to 0.10 mm, but in other embodiments, the thickness of the adhesive strip 21 may be less than or greater than 0.10 mm.

[0032] like Figure 1 As shown, the conductive circuit layer 3 is arranged below the adhesive gas conducting layer 2 and is used to cooperate with the color film panel layer 1 to control the on and off of the circuit.

[0033] like Figure 1 , Figure 2 and Figure 4 As shown, the material of the anti-cross-light isolation layer 4 is foam glue, and the anti-cross-light isolation layer 4 is arranged below the conductive circuit layer 3, and is used to separate the bump buttons 11 to avoid interference between lights in different areas; the anti-cross-light isolation layer 4 is provided with an air guide groove 41 on one side close to the light source emission layer 5, which can reduce the propagation of the light source through the air guide groove 41 while ventilating. It should be noted that in this embodiment, each separation area is provided with an air guide groove 41 in the horizontal direction and in the vertical direction, but in other embodiments, the number of the air guide grooves 41 can be two or more.

[0034] like Figure 1 and Figure 2 As shown, the light source emitting layer 5 is arranged on the anti-cross-light isolation layer 4 to provide a light source for the bump button 11 , and light sources of different colors are arranged on the light source emitting layer 5 corresponding to the bump button 11 .

[0035] In summary, the utility model discloses a color film switch structure for preventing low-temperature air closure, which has a simple structure and ingenious design. By designing multiple groups of air paths, the problem of negative pressure air closure easily occurring inside the color film switch at low temperatures is solved. The improvement has low cost and good effect, and is easy to be promoted for practical use.

[0036] The above embodiment provided by the utility model is only an example of the principle and effect of the utility model, and is not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiment without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A color film switch structure for preventing low temperature air lock, characterized in that: include: A color film panel layer (1), wherein the color film panel layer (1) is provided with a convex button (11) for touch control; An adhesive gas-conducting layer (2), the adhesive gas-conducting layer (2) being arranged below the color film panel layer (1), and being composed of parallel and spaced adhesive strips (21), and being used to provide an adhesive connection while avoiding negative pressure air closure inside; A conductive circuit layer (3), the conductive circuit layer (3) being arranged below the adhesive gas conducting layer (2) and used to cooperate with the color film panel layer (1) to control the on and off of the circuit; an anti-cross-light isolation layer (4), the anti-cross-light isolation layer (4) being arranged below the conductive circuit layer (3) and used for separating the convex buttons (11); A light source emitting layer (5), the light source emitting layer (5) being arranged on the anti-cross-light isolation layer (4) and being used to provide a light source for the convex button (11).

2. A color film switch structure for preventing low temperature air lock according to claim 1, characterized in that: The adhesive strip (21) is provided with a longitudinal break (21a) on the outer periphery of the convex button (11).

3. A color film switch structure for preventing low temperature air lock according to claim 1, characterized in that: An air guide groove (41) is provided on one side of the anti-cross-light isolation layer (4) close to the light source emission layer (5).

4. A color film switch structure for preventing low temperature air lock according to claim 3, characterized in that: The material of the anti-cross-light isolation layer (4) is foam glue.

5. A color film switch structure for preventing low temperature air lock according to claim 1, characterized in that: The thickness of the adhesive strip (21) is 0.05 mm to 0.10 mm.

6. A color film switch structure for preventing low temperature air lock according to claim 1, characterized in that: The top of the convex button (11) is a planar pressing structure (11a), and the periphery of the planar pressing structure (11a) is connected to the color film panel layer (1) via an arc-shaped rebound structure (11b).

7. A color film switch structure for preventing low temperature air lock according to claim 1, characterized in that: Light sources of different colors are provided on the light source emitting layer (5) at locations corresponding to the convex buttons (11).

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