Circuit breaker

Patent metadata

Field	Value
Publication number	US-9425002-B2
Application number	US-201313929512-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Jul 9, 2012
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A circuit breaker includes: a housing; a stator accommodated in the housing and connected to a terminal unit; a mover selectively brought into contact with the stator; an opening and closing unit manipulating the mover such that the mover is selectively brought into contact with the stator; and an insulating cover provided in the housing and shielding the mover and the stator from the exterior of the housing, wherein the housing or the insulating cover is made by molding an electrical insulating material.

First claim

What is claimed is:

1. A circuit breaker comprising:
a housing;
a stator accommodated in the housing and connected to a terminal unit;
a mover that pivots about an axis to be selectively brought into contact with the stator;
an opening and closing unit manipulating the mover such that the mover is selectively brought into contact with the stator, wherein the opening and closing unit comprises: a first shaft connected to a power transmission unit, a link connected to the first shaft, a second shaft connected to the link, and a latch having a first end and a second end, wherein the first end of the latch is connected to the link by the second shaft;
an insulating cover provided between the mover and the opening and closing unit, and shielding the mover and the stator from the exterior of the housing; and
a holder connected to the second end of the latch, wherein the holder is movable about an axis in opposing first and second directions according to rotation of the first shaft, wherein the holder provides a contact force to the mover to cause the mover to pivot about the axis, wherein the axis of the holder is different than the axis of the mover;
wherein the housing or the insulating cover is made by molding an electrical insulating material,
wherein, a part of the insulating cover is inserted into the holder such that a side of the holder is formed to overlap with a portion of a side of the insulating cover.

2. The circuit breaker of claim 1 , wherein the insulating cover includes a link accommodation portion for accommodating the link.

3. The circuit breaker of claim 1 , wherein an extending surface is formed on a portion of the insulating cover, and a shaft insertion hole is formed in the extending surface to allow the second shaft to be inserted thereinto and movable therein.

4. The circuit breaker of claim 1 , wherein latch insertion holes are formed in both sides of the insulating cover to allow the latch to be inserted thereinto and movable therein.

5. The circuit breaker of claim 4 , wherein both sides of the insulating cover to form the latch accommodation portion.

6. The circuit breaker of claim 1 , wherein the holder has a hole to allow the mover to be inserted thereinto.

Assignees

• Lsis Co Ltd

Inventors

• Seo Jae Kwan
• Cho Seong Yeol

Classifications

• H01H9/30

  Means for extinguishing or preventing arc between current-carrying parts · CPC title

• H01H1/226 Primary

  having a plurality of parallel contact bars · CPC title

• H01H2009/305

  including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber · CPC title

• H01H1/64

  Protective enclosures, baffle plates, or screens for contacts · CPC title

• H01H9/02 Primary

  Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B1/26) · CPC title