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US 8,575,502 B2Granted
Plug interlock device for circuit breaker and circuit breaker having the same
AssigneeLS Industrial Systems Co., Ltd.
InventorsHong Ik Yang, Kil Young Ahn, Seung Pil Yang, In Kyum Kim, Yong Tae Kim
Life of this patent
Estimating the term…
Abstract
Disclosed are a plug interlock device for a circuit breaker and a circuit breaker having the same, wherein a plug is not allowed to be separated from a connector while a breaker main body is moved from a test position to a run position or is running at the run position, thereby obviating the plug from being unexpectedly unplugged from the connector while the breaker main body is moved from the test position to the run position or is running, resulting in preventing a safety accident in advance.
Claims14
A circuit breaker comprising:
- a distributing board having a control circuit plug;
- a breaker main body having a control circuit connector, the control circuit plug being connected to or separated from the control circuit connector, and having terminals for receiving voltage and current;
- a cradle installed at the distributing board and having terminals connected to or separated from the terminals of the breaker main body;
- a movable carriage slidably installed at the cradle with the breaker main body being loaded;
- a transfer unit disposed between the movable carriage and the cradle and configured to convey the movable carriage;
- a first locking unit disposed between the control circuit plug and the control circuit connector and configured to selectively restrict the plug from being separated from the connector;
- an interlock unit coupled to the first locking unit to cooperatively move in a direction of the plug being inserted;
- and
- a second locking unit coupled to the interlock unit to selectively restrict the operation of the transfer unit in cooperation with the movement of the interlock unit.
6 more elements
A circuit breaker comprising:
- a control circuit plug disposed at a distributing board;
- a control circuit connector disposed at a breaker main body and connected to or separated from the plug, the breaker main body accommodated in the distributing board to be movable back and forth;
- a fixed plate secured with the breaker main body and configured to support the connector;
- plug brackets coupled to both sides of the fixed plate to be movable in a direction of the plug being inserted;
- first locking latches rotatably coupled to the plug brackets, respectively, and configured to lock the plug;
- at least one link coupled to the plug brackets to interlock with the plug brackets;
- and
- a second locking latch rotatably coupled to one of the at least one link and configured to selectively restrict the movement of the breaker main body.
5 more elements
Dependencies are inferred from the claim text.