초록 ▼

A touch plate assembly for a digital control device. The touch plate is sectioned off into a plurality of touch switch areas, each of which represents certain information to be entered into the control circuit. The touch plate and a printed circuit board, carrying the detection circuitry are held in

A touch plate assembly for a digital control device. The touch plate is sectioned off into a plurality of touch switch areas, each of which represents certain information to be entered into the control circuit. The touch plate and a printed circuit board, carrying the detection circuitry are held in place by a housing which may carry other circuitry as well. Electrical connections between the detection circuitry and the touch switches are made by resilient spring contact members rigidly mounted on the circuit board and soldered in place as a component. A combination shield-filter assembly is bonded to the back of the touch plate. The shield-filter assembly includes a metal-polyester laminate having windows therein, through which the spring contact members make electrical contact to contact areas on the touch plate. In addition, certain portions of the metal layer are removed so that light from a light source located on the printed circuit board may be seen by the user of the control.

대표청구항 ▼

A touch plate assembly for entering information into a digital control circuit, comprising: a flat dielectric plate having front and back faces; a plurality of touch switches on said dielectric plate; contact areas on said back face, said contact areas being electrically connected to said touch swit

A touch plate assembly for entering information into a digital control circuit, comprising: a flat dielectric plate having front and back faces; a plurality of touch switches on said dielectric plate; contact areas on said back face, said contact areas being electrically connected to said touch switches; a printed circuit board containing circuitry for detecting the activation of said touch switches; a plurality of bifurcated contacts extending from said printed circuit board toward said dielectric plate, said bifurcated contacts being electrically connected to said circuitry and abutting against said contact areas to electrically connect said circuitry and said touch switches; housing means for holding said dielectric plate and said printed circuit board substantially parallel to one another, said housing means including first means for engaging a first edge of said flat dielectric plate and a first edge of said printed circuit board, and second means for engaging the opposite edge of said flat dielectric plate and the opposite edge of said printed circuit board.