Trip device of molded case circuit breaker using a stair type hanger

Patent metadata

Field	Value
Publication number	US-9362076-B2
Application number	US-201414477365-A
Country	US
Kind code	B2
Filing date	Sep 4, 2014
Priority date	Jan 28, 2014
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

Disclosed is a trip device of a molded case circuit breaker. The trip device includes a shooter configured to include a body and a rotating shaft which passes through the body, a double torsion spring coupled to both sides of the rotating shaft and configured to provide an elastic restoring force to enable the shooter to rotate, and a crossbar configured to include a hanger that contacts the hanging plate and limits a movement of the shooter. A hanging plate is provided at a lower portion of the body, and a hitting plate is provided at an upper portion of the body.

First claim

What is claimed is:

1. A trip device of a molded case circuit breaker, the trip device comprising:
a shooter configured to include a body and a rotating shaft which passes through the body, wherein a hanging plate is provided at a lower portion of the body, and a hitting plate is provided at an upper portion of the body;
a double torsion spring coupled to both sides of the rotating shaft, and configured to provide an elastic restoring force to enable the shooter to rotate; and
a crossbar configured to include a hanger that contacts the hanging plate and limits a movement of the shooter,
wherein the hanger is formed in a stair type, and comprises a first hanging part and a second hanging part,
wherein under a normal state, the hanging plate of the shooter is fixed in contact with the first hanging part of the crossbar, and during a trip operation a rotatable range of the shooter is limited by the second hanging part.

2. The trip device of claim 1 , wherein the rotating shaft is inserted into a receiving part of a trip device case, and an upper portion of the receiving part of the trip device case is open.

3. The trip device of claim 2 , wherein a portion of the receiving part of the trip device case has an inclined surface.

4. The trip device of claim 1 , wherein one side of the rotating shaft is formed longer than the other side of the rotating shaft.

5. The trip device of claim 1 , wherein a plurality of coupling parts are respectively provided at both ends of the rotating shaft, and have a smaller diameter than a diameter of a central portion of rotating shaft.

6. The trip device of claim 1 , wherein an asymmetric groove is formed at one side of a lower portion of the body.

Assignees

• Lsis Co Ltd

Inventors

• Song Su Yang

Classifications

• H01H71/40 Primary

  Combined electrothermal and electromagnetic mechanisms · CPC title

• H01H71/12 Primary

  Automatic release mechanisms with or without manual release · CPC title

• H01H71/505

  Latching devices between operating and release mechanism · CPC title

• H01H71/16

  with bimetal element {(combined with detection of imbalance of two or more currents H01H83/223)} · CPC title

• H01H71/52

  actuated by lever · CPC title