Pole component and circuit breaker comprising same

Patent metadata

Field	Value
Publication number	US-11764020-B2
Application number	US-201917432743-A
Country	US
Kind code	B2
Filing date	Jul 11, 2019
Priority date	Feb 22, 2019
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A pole component (and circuit breakers including such a pole components) may be provided that include an upper terminal; a lower terminal disposed a predetermined distance away from the upper terminal; a breaker part assembly including a fixed electrode, which is electrically connected to the upper terminal, a movable electrode, which is selectively connected to the fixed electrode, and a current conducting portion which is fixed to the movable electrode and electrically connected to the lower terminal; an outer housing having an open lower surface and accommodating the upper terminal, lower terminal and breaker part assembly; and an inner housing which is detachably disposed between the outer housing and breaker part assembly.

First claim

The invention claimed is:

1. A pole component comprising:
an upper terminal;
a lower terminal disposed to be spaced apart from the upper terminal at a predetermined interval;
a breaker part assembly including a fixed electrode electrically connected to the upper terminal, a movable electrode selectively connected to the fixed electrode, and a current conducting portion fixed to the movable electrode and electrically connected to the lower terminal;
an outer housing having an open lower surface to accommodate the upper terminal, the lower terminal, and the breaker part assembly; and
an inner housing detachably disposed between the outer housing and breaker part assembly, wherein the inner housing includes:
a plate-shaped front portion disposed to face an inner surface of the outer housing; and
a pair of side surface portions formed to extend from both sides of the front portion in a direction toward the breaker part assembly.

2. The pole component of claim 1 , further comprising a lever part which spaces the movable electrode apart from the fixed electrode when an external force is applied.

3. The pole component of claim 2 , wherein the lever part includes:
an insulating rod disposed under the movable electrode;
a movable member fixed to the insulating rod;
a hinge pin disposed through the outer housing;
a lever having one end formed with a hinge hole through which the hinge pin passes, the other end accommodated in the outer housing to be exposed to an outside of the outer housing, and a middle fixed to the movable member; and
an elastic body disposed between the movable member and the lever.

4. The pole component of claim 3 , wherein the inner housing is disposed in the outer housing to come into contact with at least one of the lower terminal, the inner surface of the outer housing, the breaker part assembly, and the lever part.

5. The pole component of claim 1 , wherein a seating groove recessed in a shape corresponding to an outer surface of the lower terminal is formed at an upper side of the front portion.

6. The pole component of claim 3 , wherein hinge grooves are formed in the pair of side surface portions so that the hinge pin passes therethrough.

7. The pole component of claim 1 , wherein the inner housing further includes at least one or more first reinforcement parts each having one end and the other end respectively disposed at the pair of side surface portions.

8. The pole component of claim 7 , wherein the one or more first reinforcement parts each have a plate shape and is integrally formed with the inner housing.

9. The pole component of claim 1 , wherein the inner housing further includes:
at least one or more second reinforcement parts formed to extend from the front portion to face the pair of side surface portions; and
at least one or more third reinforcement parts each having one end and the other end disposed between the second reinforcement parts and the pair of side surface portions.

10. The pole component of claim 9 , further comprising at least one or more fourth reinforcement parts formed between the at least one or more second reinforcement parts and the pair of side surface portions to face the at least one or more second reinforcement parts or the pair of side surface portions, and each having one end and the other end respectively disposed at one of the one or more first reinforcement parts and one of the one or more third reinforcement parts.

11. The pole component of claim 3 , wherein the inner housing further includes a fifth reinforcement part having one side surface formed in a shape partially corresponding to an outer surface of the insulating rod to be disposed to face the insulating rod.

12. A circuit breaker comprising:
the pole component of claim 1 ; and
a frame accommodated in a switchboard and in which at least one or more pole components are disposed.

13. The circuit breaker of claim 12 , wherein:
the frame is formed with a first hole;
the outer housing is formed with a second hole facing the first hole; and
the inner housing is formed with a third hole facing the first hole and the second hole; and
the frame further comprises fastening bolts which are fastened through the first hole to the third hole.

14. The circuit breaker of claim 13 , wherein the inner housing further includes a cylindrical sixth reinforcement part having a shape corresponding to the third hole and protruding in a direction toward the breaker part assembly.

Assignees

• Ls Electric Co Ltd

Inventors

• Lee Han Joo
• Yang Hong Ik
• Ahn Kil Young

Classifications

• H01H33/66207

  Specific housing details, e.g. sealing, soldering or brazing · CPC title

• H01H71/0207 Primary

  Mounting or assembling the different parts of the circuit breaker · CPC title

• H02B13/01 Primary

  with resin casing · CPC title

• H01H71/08 Primary

  Terminals; Connections · CPC title

• H01H33/6606

  Terminal arrangements · CPC title