Static electricity prevention function is added the printed circuit substrate guide carriage rail system

摘要

PROBLEM TO BE SOLVED: To provide a printed circuit board guide rail system which is provided with an ESD(electrostatic) preventive function and simple in structure so as to effectively protect a printed circuit board against damage caused by static electricity. ;SOLUTION: A ESD grounding plane 10 is formed on the one surface of a printed circuit board 4'. An engaging step 17 is projected at the lower end of a guide rail 5, and an insertion groove 13 where an ESD strip 8 which is formed by fending an ESD grounding plane contact 18 and an ESD printed circuit board contact 14 is inserted is provided in the side of the guide rail 5. The ESD strip 8 is inserted into the insertion groove 13. An ESD printed circuit board 7 provided with a copper foil 9 on its upside is provided in the side of a sub-rack through the intermediate of an insulator 12 traversing the rear lower end of the sub-rack 1 so as to be inserted into a groove provided in the engaging step 17 of the guide rail 5, and a grounding cable 11 is linked to both ends of the ESD printed circuit board 7.;COPYRIGHT: (C)1997,JPO