... connection devices, specifically relates to a plate connected to plate connector. Background Technology All kinds of plates like sheet wood, plywood ... utility model is to provide a plate connected to plate connector, making the connection plate without using nails or screws, to ... , lift plate, 6, helical gear, 7 pin, 8, positioning holes, 9, plywood, 10 journal sets, 11, spiral groove, 12, screw, 13 ...