| 摘要 |
A push button relay, in which the closing of the relay contacts is independent of the magnetic circuit of the relay, includes a coil, a magnetizable armature, one end of which normally exerts a force upon a movable contact carrying member to move its contacts out of contact with the stationary contacts of the relay, and a manually operable push button which, when depressed, contacts the armature to overcome the contact opening force exerted by the armature upon the movable contacts, and urges the contact carrying member and its contacts toward the stationary contacts. When the contacts are closed and when the push button is returned, the coil is energized to maintain the armature out of contact opening relationship with the contact carrying member. The armature is preferably maintained in spaced relationship to the contact carrying member by energization of the coil, such that when the coil is deenergized, the armature impactingly opens the contacts.
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