Patent ID: 6756703
Filing Date: 2004-06-29
Classification: H03K

Abstract:
A trigger switch module, comprising:a top casing; a sensing board being located below said top casing; a connecting element located below said sensing board; and a plurality of pins having a first end inserted into said connecting element and a second end inserted onto a circuit board located below said sensing board; said circuit board having a control circuit, a contact end, sensors, and a signal output provided thereon; and said sensing board, said connecting element, said pins, and said circuit board all being enclosed in said top casing to form an enclosed structure; and a distance between said sensing board and said circuit board being set to produce a capacity, said capacity being changed when said top casing is touched, and said sensors on said circuit board sending out a signal via said signal output when said sensors sense any change in said capacity, and a feedback circuit being provided on said circuit board to detect any change in said body capacity to verify existence of any touch of said trigger switch module.