Electromagnetic contactor with abrasion preventing means
AssigneeLS Industrial Systems Co., Ltd.
InventorGwan Ho Choi
Life of this patent
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Abstract
An electromagnetic contactor is provided an electromagnetic contactor including an upper frame having a fixed contact point and a guide rail; a cross bar comprising a sliding portion engaged with the guide rail, a movable contact point contacting and separating with respect to the fixed contact point while sliding along the guide rail, and a movable core; and a lower frame comprising a fixed core disposed adjacent to the movable core, an excitation coil magnetizing the fixed core by an electromotive force, and a return spring exerting an elastic force to the cross bar, wherein the sliding portion is configured separately from the cross bar, and a material forming the sliding portion has a friction coefficient against the guide rail less than that of the cross bar.
Claims7
An electromagnetic contactor, comprising:
- an upper frame having a fixed contact point and a guide rail;
- a cross bar comprising a sliding portion, a movable contact point contacting and separating with respect to the fixed contact point while sliding along the guide rail, and a movable core;
- and
- a lower frame comprising a fixed core disposed adjacent to the movable core, an excitation coil magnetizing the fixed core by an electromotive force, and a return spring exerting an elastic force to the cross bar,
- wherein the sliding portion is configured separately from the cross bar, and a material forming the sliding portion has a friction coefficient against the guide rail less than that of the cross bar, and
- the cross bar and the sliding portion are both engaged with the guide rail.
An electromagnetic contactor, comprising:
- a frame having a guide rail thereinside;
- a cross bar having a movable contact point, which slides along the guide rail;
- a fixed contact point contacting or separating with respect to the movable contact point;
- and
- an actuator moving the cross bar to a side of the fixed contact point,
- wherein the cross bar additionally comprises a sliding portion,
- a friction coefficient between the sliding portion and the guide rail is less than a friction coefficient between the cross bar and the guide rail, and
- the cross bar and the sliding portion are both engaged with the guide rail.
Dependencies are inferred from the claim text.