Automobile junction box with replaceable busbar circuit blocks

Abstract

An electrical connector housing or automobile junction box is provided that forms internal circuits in a simplified way. The electrical connector housing includes at least one case which is to receive a plurality of circuit blocks, or layers, each of which includes at least one X-directional bus bar layer and at least one Y-directional bus bar layer superposed thereon. The X-directional and Y-directional bus bar layers contain strip-shaped bus bars laminated with insulative film. The strip-shaped bus bars are arranged in parallel at a given interval, respectively in an X direction and in a Y direction perpendicular thereto. The plurality of circuit blocks or layers are then superposed on one another with insulator plates interposed therebetween, such that the bus bars arranged in the X and Y directions form cross points. The cross points are electrically connected to circuits at desired cross points, for example by rivets or pins, so as to form branched circuits. The bus bars in the X and Y directions have folded end portions to form tabs for connection to external circuitry. A power block, current block and splice block may be included and may be individually replaced.