Interlock apparatus for three circuit breakers

Patent metadata

Field	Value
Publication number	US-10614973-B2
Application number	US-201815946365-A
Country	US
Kind code	B2
Filing date	Apr 5, 2018
Priority date	Apr 11, 2017
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

An interlock apparatus according to embodiments is configured to block an operation of a third circuit breaker while a first circuit breaker and a second circuit breaker operate and include a mover and a rotator. The mover include a first connector connected to the first circuit breaker, a second connector connected to the second circuit breaker, and a central part disposed between the first connector and the second connector and is rectilinearly moved along one direction in response to operations of the first circuit breaker and the second circuit breaker. The rotator include a first engagement part engaged with to the third circuit breaker and a second engagement part engaged with the central part and be rotated around a shaft passing through the first engagement part.

First claim

What is claimed is:

1. An interlock apparatus configured to block an operation of a third circuit breaker while a first circuit breaker and a second circuit breaker operate, the interlock apparatus comprising:
a first connector connected to the first circuit breaker;
a second connector connected to the second circuit breaker;
a central part disposed between the first connector and the second connector;
a mover configured to be rectilinearly moved along one direction in response to the operations of the first circuit breaker and the second circuit breaker;
a first engagement part engaged with the third circuit breaker;
a second engagement part engaged with the central part;
a rotator configured to be rotated around a shaft passing through the first engagement part in response to a movement of the mover;
a base attached to the third circuit breaker; and
a channel part providing a movement path of the mover and passing through the base,
wherein the mover is rectilinearly moved along the other direction to rotate the rotator in response to a stoppage of at least one of the first circuit breaker and the second circuit breaker,
wherein the interlock apparatus further comprises a second intermediator disposed between the third circuit breaker and the first engagement part, engaged with the first engagement part, and configured to be rotated together with the rotator,
wherein the second intermediator comprises a stopper,
wherein the second intermediator blocks a rotation of a first intermediator of the third circuit breaker in response to the stopper being rotated along the rotator to come into contact with an accommodation part of the first intermediator, and
wherein the second intermediator allows the rotation of the first intermediator in response to the stopper being rotated along the rotator to be separated from the accommodation part of the first intermediator.

2. The interlock apparatus of claim 1 , wherein the mover is rotated around a shaft passing through the central part in response to the operation of one of the first circuit breaker and the second circuit breaker.

3. The interlock apparatus of claim 1 , further comprising:
a guide disposed to be rectilinearly movable at the base and engaged with at least one of the central part and the second engagement part.

4. The interlock apparatus of claim 1 , wherein the one direction and the other direction are opposite to each other on an axis which vertically extends.

5. The interlock apparatus of claim 4 , further comprising a driver including:
a first coupler connected to the first circuit breaker;
a second coupler connected to the second circuit breaker; and
a shaft part coupled to a rotating shaft of the third circuit breaker between the first coupler and the second coupler,
wherein the driver is configured to be rotated together with the rotating shaft in response to the operation of the third circuit breaker.

6. The interlock apparatus of claim 1 , further comprising:
a first driver coupled to a rotating shaft of the first circuit breaker, connected to the first connector, and configured to be rotated in response to the operation of the first circuit breaker; and
a second driver coupled to a rotating shaft of the second circuit breaker and configured to be rotated in response to the operation of the second circuit breaker.

7. The interlock apparatus of claim 6 , further comprising:
a first linker configured to extend from the first driver, connected to the first connector, and configured to move the first connector in response to the operation of the first circuit breaker; and
a second linker configured to extend from the second driver, connected to the second connector, and configured to move the second connector in response to the operation of the second circuit breaker.

Assignees

• Lsis Co Ltd

Inventors

• Seo Jae-Kwan

Classifications

• H01H2009/267

  with interlocking of two out of three switches, e.g. two switches each connecting a power supply to a busbar and a bus coupling switch interlocked in such a way that the power supplies are never connected in parallel · CPC title

• H01H9/26 Primary

  for interlocking two or more switches ({H01H13/568 takes precedence;} by a detachable member H01H9/28 {; for electromagnetic relays H01H50/323}) · CPC title

• H01H9/24

  for interlocking two or more parts of the mechanism for operating contacts · CPC title

• H01H9/262 Primary

  using flexible transmission elements, e.g. Bowden cable · CPC title

• H01H33/52 Primary

  for interlocking two or more switches · CPC title