Patent ID: 7246632
Filing Date: 2007-07-24
Classification: B60T,F16K,Y10T

Abstract:
1. A manufacturing method for a normally-closed electromagnetic valve, the electromagnetic valve including: a body member having a receiving space and communication holes communicating with the receiving space; a moving core disposed within the receiving space so as to move in an axial direction of the receiving space; a valve seat which has a flow hole constituting a part of a flow passage of a fluid circuit, and is accommodated within the receiving space of the body member so as to be fixed to the body member; a valve element fixed to an end portion of the moving core, and located in the flow passage for closing the flow hole; a resilient member urging the valve element toward the valve seat; and a fixed core fixed to an end portion of the body, wherein the moving core to which the valve element is fixed and the resilient member are disposed in the receiving space of the body member so that the valve element is sandwiched between the valve seat and the resilient member, the manufacturing method comprising the steps of: