CN212365807U

CN212365807U - Shielding type membrane switch

Info

Publication number: CN212365807U
Application number: CN202021555536.7U
Authority: CN
Inventors: 马永根; 吴连根
Original assignee: Xiamen San Te Xing Electronics Co ltd
Current assignee: Xiamen San Te Xing Electronics Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-01-15
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a shielding type membrane switch, which is characterized in that the shielding type membrane switch comprises a display window, a button, a membrane switch, a surface layer, a conductive layer, a first isolation layer, a circuit layer, a second isolation layer and a back glue layer, wherein the top end of the membrane switch is fixedly provided with the display window, the lower end of the display window is provided with a plurality of indicator lamps, the lower end of the indicator lamps is provided with a plurality of buttons, one side of the membrane switch is provided with a membrane switch connecting wire in a penetrating way, the other end of the membrane switch connecting wire is fixedly provided with a membrane switch plug-in, the membrane switch comprises the surface layer, the conductive layer, the first isolation layer, the circuit layer, the second isolation layer and the back glue layer, the surface of the surface layer is fixedly provided with the conductive layer, the surface of the conductive layer is fixedly provided with the first isolation layer, the, the surface of the second isolation layer is fixedly provided with a back glue layer, so that the electromagnetic shielding effect of the membrane switch is greatly improved.

Description

Shielding type membrane switch

Technical Field

The utility model relates to a membrane switch technical field particularly, relates to a shielding formula membrane switch.

Background

The membrane switch is an operating system integrating a key function, an indicating element and an instrument panel and is a light-touch switch-on normally-open switch. The membrane switch has the characteristics of rigorous structure, attractive appearance, good sealing performance, moisture resistance, long service life and the like, is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like at present, can not avoid electromagnetic leakage and strong external electromagnetic interference when applied to electronic products and communication equipment, limits the application range of the membrane switch, and particularly has higher requirements on electromagnetic compatibility and electromagnetic shielding performance of the membrane switch.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shielding formula membrane switch to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a shielding type membrane switch is characterized by comprising a display window, a button, a membrane switch, a surface layer, a conductive layer, a first isolation layer, a circuit layer, a second isolation layer and a back glue layer, a display window is fixedly arranged at the top end of the membrane switch, a plurality of indicator lamps are arranged at the lower end of the display window, the lower end of the indicator light is provided with a plurality of buttons, one side of the membrane switch is provided with a membrane switch connecting wire in a penetrating way, a membrane switch plug-in is fixedly arranged at the other end of the membrane switch connecting wire, the membrane switch comprises a surface layer, a conductive layer, a first isolation layer, a circuit layer, a second isolation layer and a back glue layer, the lower surface of the surface layer is fixedly provided with a conductive layer, the lower surface of the conductive layer is fixedly provided with a first isolation layer, the circuit board is characterized in that a circuit layer is fixedly arranged on the lower surface of the first isolation layer, a second isolation layer is fixedly arranged on the lower surface of the circuit layer, and a back glue layer is fixedly arranged on the lower surface of the second isolation layer.

Furthermore, the surface layer is uniformly provided with buffer cavities, and the buffer cavities are of honeycomb structures.

Furthermore, the conducting layer is a conducting ink layer, and the conducting ink layer is in a grid shape.

Furthermore, first isolation layer and second isolation layer include shielding layer and insulating layer, the shielding layer is high number of purification copper mesh shielding layers, the insulating layer is ultra-thin polyester film insulating layer.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model relates to a shielding formula membrane switch, shielding layer and insulating layer that are equipped with in first isolation layer and the second isolation layer have improved membrane switch's electromagnetic shield effect greatly, through being equipped with conductive ink layer, not only be much lower than traditional metal conducting material in the cost to conductive ink layer still possesses the electromagnetic shield function, through the cushion chamber that is equipped with in the surface course, still can cushion impact and pressure when pressing, avoid strikeing too big conductive ink layer that leads to tearing, the life has been improved greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a shielded membrane switch according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a shielding type membrane switch according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first isolation layer and a second isolation layer of a shielded membrane switch according to an embodiment of the present invention.

Description of the main elements

1. A display window; 2. an indicator light; 3. a button; 4. a membrane switch; 5. a membrane switch connection line; 6. a membrane switch plug-in; 7. a surface layer; 8. a conductive layer; 9. a first isolation layer; 10. a circuit layer; 11. a second isolation layer; 12. a back glue layer; 13. a shielding layer; 14. an insulating layer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-3, a shielding type membrane switch according to an embodiment of the present invention includes a display window 1, a button 3, a membrane switch 4, a surface layer 7, a conductive layer 8, a first isolation layer 9, a circuit layer 10, a second isolation layer 11 and a back adhesive layer 12, the display window 1 is fixed on the top end of the membrane switch 4, a plurality of indicator lamps 2 are disposed on the lower end of the display window 1, a plurality of buttons 3 are disposed on the lower end of the indicator lamps 2, a membrane switch connecting wire 5 is disposed on one side of the membrane switch 4 in a penetrating manner, a membrane switch plug-in 6 is fixed on the other end of the membrane switch connecting wire 5, the membrane switch 4 includes a surface layer 7, a conductive layer 8, a first isolation layer 9, a circuit layer 10, a second isolation layer 11 and a back adhesive layer 12, a conductive layer 8 is fixed on the lower surface of the surface layer 7, a first isolation layer 9, first isolation layer 9 lower fixed surface is equipped with circuit layer 10, circuit layer 10 lower fixed surface is equipped with

second isolation layer

11, 11 lower fixed surfaces of second isolation layer are equipped with gum layer 12.

Specifically, evenly be equipped with the cushion chamber in surface course 7, the cushion chamber is honeycomb structure.

Specifically, the conductive layer 8 is a conductive ink layer, and the conductive ink layer is in a grid shape.

Specifically, the first isolation layer 9 and the second isolation layer 11 include a shielding layer 13 and an insulation layer 14, the shielding layer 13 is a high-number purified copper mesh shielding layer, and the insulation layer 14 is an ultrathin polyester film insulation layer.

The utility model relates to a shielding formula membrane switch, shielding layer 13 and insulating layer 14 that are equipped with in first isolation layer 9 and the second isolation layer 11 have improved membrane switch 4's electromagnetic shield effect greatly, through being equipped with conductive ink layer, not only are with lower a lot than traditional metal conductive material in the cost to conductive ink layer still possesses the electromagnetic shield function, through the cushion chamber that is equipped with in the surface course 7, still can cushion impact and pressure when pressing, avoid strikeing too big conductive ink layer that leads to tearing, improved more than life greatly only do the utility model discloses a preferred embodiment has, and be not used to the restriction the utility model discloses, to the technical personnel in the field, the utility model discloses can have various changes and change. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shielding type membrane switch is characterized by comprising a display window (1), buttons (3), a membrane switch (4), a surface layer (7), a conducting layer (8), a first isolating layer (9), a circuit layer (10), a second isolating layer (11) and a back glue layer (12), wherein the display window (1) is fixedly arranged at the top end of the membrane switch (4), a plurality of indicating lamps (2) are arranged at the lower end of the display window (1), a plurality of buttons (3) are arranged at the lower end of the indicating lamps (2), a membrane switch connecting wire (5) penetrates through one side of the membrane switch (4), a membrane switch plug-in piece (6) is fixedly arranged at the other end of the membrane switch connecting wire (5), the membrane switch (4) comprises the surface layer (7), the conducting layer (8), the first isolating layer (9), the circuit layer (10), the second isolating layer (11) and the back glue layer (12), surface course (7) lower fixed surface is equipped with conducting layer (8), conducting layer (8) lower fixed surface is equipped with first isolation layer (9), first isolation layer (9) lower fixed surface is equipped with circuit layer (10), circuit layer (10) lower fixed surface is equipped with second isolation layer (11), second isolation layer (11) lower fixed surface is equipped with gum layer (12).

2. A shielded membrane switch according to claim 1, characterized in that buffer cavities are uniformly arranged in the surface layer (7), and the buffer cavities have a honeycomb structure.

3. A shielded membrane switch according to claim 1, characterized in that the conductive layer (8) is a layer of conductive ink, and the layer of conductive ink is a grid.

4. A shielded membrane switch according to claim 1, wherein said first (9) and second (11) isolating layers comprise a shielding layer (13) and an insulating layer (14), said shielding layer (13) being a high-count purified copper mesh shielding layer, and said insulating layer (14) being an ultra-thin polyester film insulating layer.