Method of manufacturing a compact switch

摘要

A method of manufacturing a compact switch includes steps of (a) forming a base by insert molding on terminal members such that terminal pins of the terminal members are extended downward through the base when the terminal members, one of which has a bimetallic plate-fixing portion and another of which has engaging grooves to be engaged with a movable spring member, are punched in a hoop member; (b) fixing a bimetallic plate to the fixing portion of the one terminal member, a fixed contact being attached to a free end of the bimetallic plate which is displaced when temperature of the bimetallic plate is raised; (c) bringing a movable spring member into engagement with the engaging grooves of the other terminal member, a movable contact to be faced to the fixed contact being attached to a free end of the movable spring member; (d) bringing a lower end portion of a push button member into engagement with the movable spring member; (e) cutting the terminal pins at predetermined positions from a lead frame of the hoop member and accommodating in a hosing a switch unit thus formed by the steps (a) to (d) to enable automated manufacturing process of the compact switch.