Capacitor type touch switch

Abstract

The invention discloses a capacitor type touch switch, which comprises a light transmitting capacitor type sensitive layer and a light emitting LED lamp connected with a control circuit of the touch switch, wherein the light emitting LED lamp is matched with a cavity arranged on the switch body. Because the light emitting LED lamp and the capacitor type sensitive layer are electrically connected with the control circuit of the touch switch respectively, the capacitance of the capacitor type sensitive layer changes when the capacitor type touch switch is operated, and the information that the capacitance is changed is transmitted to the control circuit so that the capacitor type touch switch is in an opened state. When the capacitor type touch switch is configured appropriately with the control circuit and the capacitor type touch switch is in the opened state, the light emitting LED lamp lights. The ray can penetrate through the switch body and the capacitor type sensitive layer, thereby the user can prompt the state of the switch more intuitively through the lamplight of the light emitting LED lamp. By adopting the structure, the switch ensures that a nearest distance is maintained between fingers and the sensitive surface of the capacitor type sensitive layer. In the same sensitive area, the capacitor type touch switch has good sensitivity and stability and is not prone to malfunction.

Description

technical field [0001] The invention relates to the technical field of touch switches, in particular to a capacitive touch switch. Background technique [0002] The capacitive sensor switch commonly used in electromechanical products or home appliances has an induction plate as its basic principle. The induction plate is a square or round electrical conductor with a size of about 10mm to 15mm. Inductive capacitance is generated between the conductor and the background medium, so that the capacitance of the conductor and the background medium changes, and the switching action is performed by cooperating with an appropriate device, and then the operation control of the device is realized. [0003] In the principle of electronic circuits, the size of the capacitance is proportional to the size of the plate or the distance between the plates is inversely proportional to the square. Among them, the distance has the greatest impact on the capacity, so the distance between the capa...

AI Technical Summary

Problems solved by technology

However, this structure increases the distance between the sensing surface of the sensing board and the finger. On the one hand, the capacitance efficiency of the capacitive touch switch is reduced, so its sensitivity is low, the stability is poor, and it is prone to malfunction; on the other hand, the touch switch with this structure Thicker, larger volume, inconvenient for the application of the touch switch

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