发明公开
EP3089188A4 OPENING AND CLOSING DEVICE 审中-公开
ÖFFNUNGS-UND SCHLIESSVORRICHTUNG

OPENING AND CLOSING DEVICE
摘要:
Provided is a switchgear, including: a stationary contact; a movable contact, which is configured to be shifted between a closed position and an opened position; an electromagnetic actuator, which is configured to generate power for shifting the movable contact, the electromagnetic actuator including a stator and a movable element; and a power transmission unit, which is configured to shift the movable contact through transmission of the power of the electromagnetic actuator, and to press the movable contact against the stationary contact when the movable contact is located at the closed position, the power transmission unit including: a drive unit-side spring bearing portion, which is configured to be shifted together with the movable element; a contact-side spring bearing portion, which is provided so as to be opposed to the drive unit-side spring bearing portion, and is configured to be shifted together with the movable contact; and a spring member, which is provided between the drive unit-side spring bearing portion and the contact-side spring bearing portion, the spring member including: an outer spring; and an inner spring, which is connected in parallel to the outer spring, and is arranged so as to be contracted by the same amount as the outer spring during a period in which the movable contact is shifted from a state of being located at the opened position to a state of being located at a terminal end of switch-on action.
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