Contactor having fixed and movable iron cores and a movable contact
AssigneeMitsubishi Electric Corporation
InventorsTakashi Inaguchi, Kazuki Takahashi, Katsuki Hotta, Hiroyuki Nozaki
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Abstract
A contactor includes a fixed iron core, a movable iron core, an operation coil, a first crossbar, a tripping spring, and a second crossbar. The contactor includes a push spring to push a movable contact toward a fixed contact, a trip coil connected to the fixed contact, and a plunger that is operated by an electromagnetic force generated in the trip coil when a current of a predetermined value or higher flows through the trip coil. The contactor includes an opening lever to push the second crossbar in a direction away from the first crossbar in conjunction with the operation of the plunger.
Claims14
A contactor having a movable contact including a movable contact point and a fixed contact including a fixed contact point facing the movable contact point, the contactor comprising:
- a fixed iron core;
- a movable iron core, one end of the movable iron core facing the fixed iron core;
- an operation coil provided around the movable iron core, the operation coil being configured to generate, by a current supplied from an outside of the contactor, an electromagnetic force that brings the movable iron core into contact with the fixed iron core;
- a first movable bar having an insulating property, one end of the first movable bar being fixed to another end of the movable iron core;
- a tripping spring to push the first movable bar in a direction away from the fixed iron core;
- a second movable bar, one end of the second movable bar facing another end of the first movable bar, another end of the second movable bar holding the movable contact, the second movable bar being configured to move in a direction same as a moving direction of the first movable bar;
- a push spring to push the movable contact toward the fixed contact;
- a trip coil connected to the fixed contact;
- a plunger to be operated by an electromagnetic force generated in the trip coil when a current of a predetermined value or higher flows through the trip coil;
- and
- two opening levers that directly contact the second movable bar to push the second movable bar in a direction away from the first movable bar as a result of an operation of the plunger.
A contactor having a movable contact including a movable contact point and a fixed contact including a fixed contact point facing the movable contact point, the contactor comprising:
- a fixed iron core;
- a movable iron core, one end of the movable iron core facing the fixed iron core;
- an operation coil provided around the movable iron core, the operation coil being configured to generate, by a current supplied from an outside of the contactor, an electromagnetic force that brings the movable iron core into contact with the fixed iron core;
- a first movable bar having an insulating property, one end of the first movable bar being fixed to another end of the movable iron core;
- a tripping spring to push the first movable bar in a direction away from the fixed iron core;
- a second movable bar, one end of the second movable bar facing another end of the first movable bar, another end of the second movable bar holding the movable contact on an upper surface of the movable contact, the second movable bar being configured to move in a direction same as a moving direction of the first movable bar fixed on the movable iron core and a moving direction of the movable iron core;
- a push spring to push the movable contact toward the fixed contact;
- a trip coil connected to the fixed contact;
- a plunger to be operated by an electromagnetic force generated in the trip coil when a current of a predetermined value or higher flows through the trip coil;
- and
- two opening levers to push the second movable bar in a direction away from the first movable bar as a result of an operation of the plunger.
Dependencies are inferred from the claim text.