CN212627852U

CN212627852U - Capacitive membrane switch

Info

Publication number: CN212627852U
Application number: CN202021555532.9U
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: 2021-02-26
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a capacitanc membrane switch relates to membrane switch technical field. The LED lamp comprises a panel layer, a display window is arranged on the panel layer, a layer of cover film is arranged above the panel layer, a touch key layer is arranged below the panel layer, a diffusion film is arranged under the touch key layer, a capacitance circuit layer is arranged below the diffusion film, a capacitance type key is fixedly arranged on the capacitance circuit layer, a hollow board is arranged below the capacitance circuit layer, a PCB circuit board is arranged below the hollow board, a plurality of LED lamps are arranged on the PCB circuit board, a connecting wire is connected below the panel layer, and one end below the connecting wire is connected with an insert strip. The utility model discloses a diffusion barrier plays the effect of samming, and the user of being convenient for uses night.

Description

Capacitive membrane switch

Technical Field

The utility model relates to a membrane switch field particularly, relates to a capacitanc membrane switch.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel. The circuit board consists of four parts, including a panel, an upper circuit, an isolating layer and a lower circuit. When the membrane switch is pressed down, the contact of the upper circuit deforms downwards to be in contact with the polar plate of the lower circuit for conduction, after the finger is loosened, the contact of the upper circuit rebounds, the circuit is disconnected, and the loop triggers a signal. The membrane switch has the advantages of rigorous structure, attractive appearance and good sealing property. Has the characteristics of moisture resistance, long service life and the like. The method 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. The membrane switch is also called as a touch keyboard, adopts an integral sealing structure formed by combining a plurality of layers of planes, is a novel integrated light-collecting, mechanical and electrical electronic component which seals a key switch, a panel, a mark, a symbol display and a lining plate together, is a fundamental change of the appearance structure of an electronic product, can replace the keys of conventional discrete components, and can more reliably execute the task of an operating system. The conventional capacitive membrane switch product cannot clearly see the positions of the keys in a dark environment without an external light source, and the internal structure is not good enough.

In view of the above, the inventors of the present application invented a capacitive membrane switch.

SUMMERY OF THE UTILITY MODEL

The utility model provides a capacitanc membrane switch aims at improving the invisible problem at night.

In order to achieve the purpose, the utility model provides a capacitanc membrane switch, including the panel layer, the display window has been seted up on the panel layer, panel layer top is equipped with the one deck and covers the membrane, panel layer below is the touch key layer, be equipped with the diffusion barrier under the touch key layer, the diffusion barrier below is equipped with electric capacity circuit layer, fixed mounting has capacitanc button on the electric capacity circuit layer, electric capacity circuit layer below is equipped with the fretwork board, the fretwork board below is equipped with the PCB circuit board, install a plurality of LED lamp on the PCB circuit board, there is the connecting wire panel layer below, connecting wire below one end is connected with the plug-in strip.

By adopting the above-mentioned scheme, the method can be used,

further, the edge of the hollow-out plate is provided with a plurality of clamping teeth, and the PCB circuit board is provided with a clamping groove clamped with the clamping teeth in a matched mode.

By adopting the above-mentioned scheme, the method can be used,

furthermore, an indicator light is arranged below the display window and electrically connected with the PCB.

By adopting the above-mentioned scheme, the method can be used,

furthermore, the plug-in strip and the connecting line are connected together in a snap-fit manner.

By adopting the above-mentioned scheme, the method can be used,

furthermore, a rubber button for controlling a switch is arranged below the indicator light.

By adopting the above-mentioned scheme, the method can be used,

furthermore, the cover film is made of transparent and waterproof materials and is plated with an anti-fingerprint coating.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is provided with the diffusion film, so that light can be refracted and diffracted for a plurality of times through the diffusion film, thereby playing a role of light equalization, enabling the light to be displayed more uniformly and softly and being convenient for users to use at night; the hollow-out plate is convenient for light to permeate through, and can protect the PCB circuit board.

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 view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the internal structure of the present invention.

Description of the main elements

1. A display window; 2. a panel layer; 3. an indicator light; 4. a rubber button; 5. a connecting wire; 6. a plug-in strip; 7. covering the film; 8. a touch key layer; 9. a diffusion membrane; 10. a capacitive line layer; 11. a capacitive button; 12. A hollowed-out plate; 13. a PCB circuit board; 14. an LED lamp.

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.

The specific implementation mode is as follows: the utility model discloses panel layer 2 has been set up, panel layer 2 top is equipped with the one deck and covers membrane 7, panel layer 2 below is touch key layer 8, be equipped with diffusion barrier 9 under touch key layer 8, diffusion barrier 9 below is equipped with electric capacity circuit layer 10, fixed mounting has capacitanc button 11 on the electric capacity circuit layer 10, electric capacity circuit layer 10 below is equipped with fretwork board 12, fretwork board 12 below is equipped with PCB circuit board 13, install a plurality of LED lamp 14 on the PCB circuit board 13, panel layer 2 below has connecting wire 5, 5 below one end of connecting wire are connected with plug-in strip 6.

In addition, the 12 edges of fretwork board are provided with a plurality of latches, PCB circuit board 13 is provided with the draw-in groove with latch cooperation joint, 1 below of display window is equipped with pilot lamp 3,

pilot lamp

3 and 13 electric connection of PCB circuit board, plug-in components strip 6 with buckle formula links together between the connecting wire 5, 3 below of pilot lamp are provided with rubber button 4 that are used for control switch, cover membrane 7 and be transparent waterproof material, and plated and prevent the fingerprint coating.

When a finger touches the panel layer 2, the pressure sense is transmitted to the touch key layer 8, the capacitive keys 11 can generate sensing signals and transmit the sensing signals to the PCB 13 through the capacitive circuit layer 10, then the LED lamp is lightened, and the light emitted by the LED element can be refracted through the diffusion film 9, so that a user can see the positions of the keys when using the LED lamp at night.

The utility model discloses a working process and beneficial effect as follows: the utility model is provided with the diffusion film 9, so that light can be refracted and diffracted for many times through the diffusion film 9, thereby playing a role of light equalization, enabling the light to be displayed more uniformly and softly and being convenient for users to use at night; the hollow-out plate 12 is convenient for light to transmit through, and can protect the PCB circuit board 13.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. The utility model provides a capacitive membrane switch, includes panel layer (2), its characterized in that, display window (1) has been seted up on panel layer (2), panel layer (2) top is equipped with one deck and covers membrane (7), panel layer (2) below is touch key layer (8), be equipped with diffusion barrier (9) under touch key layer (8), diffusion barrier (9) below is equipped with electric capacity circuit layer (10), fixed mounting has capacitanc button (11) on electric capacity circuit layer (10), electric capacity circuit layer (10) below is equipped with fretwork board (12), fretwork board (12) below is equipped with PCB circuit board (13), install a plurality of LED lamp (14) on PCB circuit board (13), panel layer (2) below has connecting wire (5), connecting wire (5) below one end is connected with and inserts a strip (6).

2. The capacitive membrane switch according to claim 1, wherein a plurality of latches are disposed on an edge of the hollowed-out plate (12), and the PCB (13) is disposed with a slot engaged with the latches.

3. The capacitive membrane switch according to claim 2, wherein an indicator light (3) is disposed below the display window (1), and the indicator light (3) is electrically connected to the PCB (13).

4. A capacitive membrane switch according to claim 3, characterized in that the plug-in strip (6) and the connection line (5) are snap-connected together.

5. A capacitive membrane switch according to claim 4, characterized in that a rubber button (4) for controlling the switch is arranged below the indicator light (3).

6. A capacitive membrane switch according to claim 5, characterized in that the cover film (7) is transparent and waterproof and is coated with an anti-fingerprint coating.