Non-directional conductive expansion device

The utility model discloses a non-directional conductive expansion device, which comprises a bottom shell, an upper cover matched with the bottom shell for covering and sealing and a plurality of sheet-shaped connecting wires, a plurality of butt joint positioning grooves are distributed on the upper surface of the bottom shell, and two metal contacts are embedded in the butt joint positioning grooves. The two metal contacts are respectively two metal contacts with different electrical attributes, the metal contacts with the same electrical attribute are connected and conducted through a conductive part, and the end part of the sheet-shaped connecting wire extends to form a connecting end head matched with the butt joint positioning groove; a first contact piece and a second contact piece which are used for making contact with the corresponding metal contacts are embedded in the connecting end. According to the utility model, the sheet-shaped connecting wire can be fixed in the conductive expansion device in