Arc chute and load switch comprising same
AssigneeLs Electric Co., Ltd.
InventorSangwook Cha
Life of this patent
Estimating the term…
Abstract
The present invention provides an arc chute, which can be provided to make close contact with a curved frame part, and a load switch comprising same, the arc chute comprising: two cover parts, which are arranged to be adjacent to the outer circumference of a frame part, are spaced apart from each other, and overlap each other in the axial direction of the frame part; and an arc grid which is arranged between the two cover parts so as to be coupled to each of the two cover parts, wherein the cover part is formed in a shape in which one side coming into contact with the outer circumference of the frame part corresponds to the outer circumference of the frame part.
Claims19
An arc chute comprising:
- two cover parts spaced apart from each other, overlapping each other in one direction, and each having at least one side formed in a curved shape;
- and
- an arc grid disposed between the two cover parts facing each other and coupled to each of the two cover parts, and
- wherein the arc grid is provided in plurality,
- wherein the arc grid comprises:
- a grid base portion formed in a plate shape extending in a direction toward the cover parts;
- and
- wherein the arc chute further comprises:
- two grid legs extending from one side of the grid base portion, and
- a fixed terminal part disposed adjacent to the cover parts;
- a frame part formed in a column shape and accommodating a portion of the fixed terminal part;
- and
- a movable contact accommodated inside the frame part to be rotatable centering on a central axis of the frame part,
- wherein the grid legs extend to a radial inside of the frame part, and are formed such that a distance between one end thereof facing the radial inside of the frame part and the central axis of the frame part is shorter than a distance between the movable contact and the central axis of the frame part,
- a grid concave portion is formed in a space between the two grid legs, and
- a width of the grid concave portion is larger than a width of the movable contact.
A load switch comprising:
- an opening and closing part including a fixed terminal part and a movable terminal part;
- a frame part accommodating a portion of the fixed terminal part;
- a rotating shaft rotatably coupled to the frame part, and connected to the movable terminal part to rotate together with the movable terminal part;
- and
- an arc chute disposed adjacent to the fixed terminal part,
- wherein the arc chute comprises:
- two cover parts spaced apart from each other, overlapping each other in one direction, and each having at least one side formed in a curved shape;
- and
- an arc grid disposed between the two cover parts facing each other, coupled to each of the two cover parts, and spaced apart from the fixed terminal part, and
- wherein the arc grid is provided in plurality, and
- wherein the movable terminal part includes a movable contact accommodated inside the frame part to be rotatable centering on a central axis of the rotating shaft,
- the arc grid comprising:
- a grid base portion formed in a plate shape extending in a direction toward the cover parts;
- and
- two grid legs extending from one side of the grid base portion to a radial inside of the frame part,
- the grid legs are formed such that a distance between one end facing the radial inside of the frame part and the rotating shaft is shorter than a distance between the movable contact and the rotating shaft,
- a grid concave portion is formed in a space between the two grid legs, and
- the grid concave portion has a width larger than that of the movable contact, such that the movable contact rotates while passing therethrough.
Dependencies are inferred from the claim text.