Patent ID: 8330565
Filing Date: 2012-12-11
Classification: H01H

Abstract:
1. A noise decreasing type electromagnetic switch comprising: a coil; a yoke installed adjacent to the coil; a metal plate configured to form a magnetic path adjacent to the coil together with the yoke; a stationary core fixedly installed at the metal plate; a movable core configured to contact the stationary core when the coil is excited; a return spring located between the movable core and the stationary core and configured to apply an elastic force such that the movable core is separated from the stationary core; a shaft connected to the movable core and configured to move together with the movable core; a movable contact point coupled to the shaft and configured to move together with the shaft; a stationary contact point facing the movable contact point and configured to contact or separate from the movable contact point in order to close or open an electric circuit; a contact spring configured to elastically support the movable contact-point; a buffer located between the stationary core and the contact spring and configured to elastically support the shaft and the stationary core; a fixing recess formed at an outer circumferential surface of the stationary core; and a fixing step formed at one end of the buffer and configured to be inserted into the fixing recess.