Film switch

Abstract

The invention discloses a film switch comprising a film, a partition plate with a through hole, an air cavity, an electric conductor arranged in the air cavity, a first signal circuit and a second signal circuit, and the film comprises an upper film and a lower film; the partition plate is arranged between the upper film and the lower film; the air cavity is enclosed by the wall of the through hole, the lower surface of the upper film and the upper surface of the lower film; the electric conductor comprises an upper electric conductor, a first lower electric conductor and a second lower electric conductor; the first signal circuit comprises an upper electric conductor and a first lower electric conductor and is used for generating a first signal; and the second signal circuit comprises an upper electric conductor and a second lower electric conductor and is used for generating a second signal. by arranging the first signal circuit and the second signal circuit, two different signals can be generated according to the magnitude of pressure borne by the film, the first signal circuit and the second signal circuit are connected in parallel, the first signal circuit is short-circuited when the second signal circuit is conducted, only one of the two different signals is generated when the film is pressed, and the two signals do not interfere with each other and can be output through a same loop and easy to distinguish; and the film switch is simple in structure, low in energy consumption and easy to popularize and use.

Description

technical field [0001] The invention relates to the technical field of electric switches, in particular to a membrane switch. Background technique [0002] Membrane switch is a new type of electronic switch, which is used to generate signals. Most of the existing membrane switches form signal circuits through upper and lower conductors, and generate signals when the signal circuit is connected and current flows. There is only one signal circuit, a single press can only make the membrane switch generate one signal, it cannot generate two different signals according to the pressing force, and the function is single. [0003] In order to solve this problem, a membrane switch that can generate multiple signals according to the pressing force has appeared on the market. For example, the Chinese patent CN103165320B discloses a button. The button is provided with a digital switch and an analog switch between two layers of membranes. When the film is subjected to the first pressure...

AI Technical Summary

Problems solved by technology

[0002] Membrane switch is a new type of electronic switch, which is used to generate signals. Most of the existing membrane switches form signal circuits through upper and lower conductors, and generate signals when the signal circuit is connected and current flows. There is only one signal circuit, a single press can only make the membrane switch generate one signal, and it cannot generate two different signals according to the pressing force, and the function is single

[0003] In order to solve this problem, a membrane switch that can generate multiple signals according to the pressing force has appeared on the market. For example, the Chinese patent CN103165320B discloses a button. The button is provided with a digital switch and an analog switch between two layers of membranes. When the film is subjected to the first pressure, the digital switch is turned on to generate a digital signal. When the film is subjected to a second pressure greater than the first pressure, the analog switch is turned on to generate an analog signal. However, when the film of this solution is subjected to the second pressure , the digital switch is still in the state of conduction, which not only increases the energy consumption, but also generates a digital signal while generating an analog signal. The analog signal and the digital signal must be distinguished by two separate circuits, which makes the structure of the button more complex

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