Electromagnetic relay structure

Details Electromagnetic relay structure Electromagnetic relay structure

H - Electricity

01

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306/105

H01H 51/06 (2006.01) H01H 50/24 (2006.01) H01H 50/28 (2006.01) H01H 50/60 (2006.01)

Patent

CA 1209184

- 1 - SPECIFICATION RELAY STRUCTURE ABSTRACT OF THE DISCLOSURE A relay structure advantageous for compacting purpose is disclosed herein. The relay comprises a generally L-shaped yoke having an upright yoke leg and an upper yoke member extending substantially at a right angle thereto, the upright yoke leg being connected to one end of the core of an energizing coil which extends substantially in parallelism with said upper yoke member. The upper yoke member is formed with a center slot extending longitudinally thereof to be open at both longitudinal ends. A generally L-shaped armature is hingedly supported onto the free end of the upper yoke member with a tab extending across the air gap defined between the free end of the upper yoke member and the opposite end of the core. Extended from the upper end of the tab is an actuator arm which is received in said slot and on which overlies a spring blade carrying at its free end a movable contact. Upon hinging movement of the armature in one direction in response to the coil being energized, the actuator arm presses upwardly the spring blade to engage or disengage the movable contact from a cooperating fixed contact. Conversely, when the coil is deenergized the armature is driven to hinge in the opposite direction by the biasing force from the spring blade to disengage or engage the movable contact with the fixed contact. During this hinging movement of the armature, the actuator arm of the armature is kept substantially within said slot in the upper yoke member, requiring no additional spacing above the yoke for the the movement of the armature. That is, the thickness of the actuator arm can be substantially received within the upper yoke member so as to reduce the total thickness or height, presenting a very compact arrangement with respect to the height of the relay.

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