Latch assembly and magnetic contactor including same
AssigneeLs Electric Co., Ltd.
InventorByeongsun Sim
Life of this patent
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Abstract
A latch assembly and a magnetic contactor including same are disclosed. A latch assembly according to one embodiment of the present disclosure comprises: a frame; a movable core and a latch unit, which are rotatably coupled to the frame. The movable core is rotatably coupled to a trip coil unit by means of a coupling member. An insertion hole for rotatably supporting the latch unit is formed on the frame. The movable core rotates along the coupling member. In addition, the latch unit is guided and rotated along the insertion hole. Therefore, the operational reliability and endurance limit of the latch assembly can be enhanced.
Claims13
A latch assembly comprising:
- a frame;
- a movable core rotatably coupled to the frame;
- a trip coil unit electrically connected to an external trip power source, coupled to the frame, and applying attractive force to the movable core;
- and
- a latch unit located adjacent to the movable core and the trip coil unit, rotatably coupled to the frame, and brought into contact with and spaced apart from the movable core,
- wherein the frame comprises:
- a first frame to which the movable core is rotatably coupled;
- a second frame continuous with the first frame at a predetermined angle and supporting the trip coil unit from a lower side;
- a third frame continuous with the second frame and extending in a direction opposite to the first frame to surround the latch unit from the lower side;
- and
- a fourth frame continuous with the third frame at a predetermined angle and rotatably coupled to the latch unit,
- wherein an insertion hole in an arcuate shape is formed in the fourth frame,
- wherein the latch unit comprises:
- a latch pin coupled through the insertion hole, extending in one direction, and brought into contact with and spaced apart from the movable core, and
- wherein when a current is applied to the trip coil unit, the movable core rotates to rotate the latch pin along the insertion hole.
A latch assembly comprising:
- a frame;
- a movable core rotatably coupled to the frame;
- a trip coil unit electrically connected to an external trip power source, coupled to the frame, and applying attractive force to the movable core;
- and
- a latch unit located adjacent to the movable core and the trip coil unit, rotatably coupled to the frame, and brought into contact with and spaced apart from the movable core,
- wherein the frame comprises:
- a first frame to which the movable core is rotatably coupled;
- a second frame continuous with the first frame at a predetermined angle and supporting the trip coil unit from a lower side;
- a third frame continuous with the second frame and extending in a direction opposite to the first frame;
- and
- a fourth frame continuous with the third frame at a predetermined angle and rotatably coupled to the latch unit,
- wherein the fourth frame is provided in plurality, and the plurality of fourth frames are disposed to face each other, and
- wherein an insertion hole is formed in any one of the plurality of fourth frames;
- wherein the movable core includes a first plate located adjacent to the trip coil unit and rotated in a direction toward the trip coil unit and in a direction away from the trip coil unit,
- wherein a hollow portion is formed through the trip coil unit and extends in a direction toward the first plate and a direction away from the first plate,
- wherein a return member is located in the hollow portion, and deformed by being pressed by the movable core so as to store restoring force,
- wherein a through hole is formed through an inside of the first plate, and
- wherein the trip coil unit includes a coupling member coupled through the through hole and the hollow portion.
Dependencies are inferred from the claim text.