Gas circuit breaker

Patent metadata

Field	Value
Publication number	US-9570256-B2
Application number	US-201414306738-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Jul 23, 2013
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A gas circuit breaker includes a hermetically-sealed container filled with an arc extinguishing gas, a fixed contact arranged within the container, a movable contact arranged to face the fixed contact and configured to move in an axial direction of the container, the movable contact capable of contacting or separating from the fixed contact, an insulating operation rod having one end connected to an end of the movable contact opposite to the fixed contact through a link at an angle of about 90 degrees with respect to the movable contact, and an actuator arranged in a substantially coaxial relationship with the insulating operation rod, the actuator including an output shaft transferring a driving force for the operation of the movable contact to the other end of the insulating operation rod.

First claim

What is claimed is:

1. A gas circuit breaker, comprising:
a hermetically-sealed container filled with an arc extinguishing gas;
a fixed contact arranged horizontally within the container;
a movable contact arranged to face the fixed contact and configured to move in a horizontal direction of the container, the movable contact capable of contacting or separating from the fixed contact;
an insulating operation rod arranged vertically within the container having a first end connected to an end of the movable contact opposite to the fixed contact through a link group at an angle of about 90 degrees with respect to the movable contact;
a seal rod arranged vertically within the container having a first end connected to a second end of the insulating operation rod and a second end connected to an output shaft of an actuator and configured to transfer the driving force of the output shaft of the actuator to the insulating operation rod and the movable contact through a single link group, the seal rod configured to maintain air-tightness of a portion through which the seal rod passes;
said actuator arranged beneath the insulating operation rod and the seal rod.

2. The gas circuit breaker of claim 1 , further comprising:
a seal rod arranged between the other end of the insulating operation rod and the output shaft of the actuator and configured to transfer the driving force of the output shaft of the actuator to the other end of the insulating operation rod, the seal rod configured to maintain air-tightness of a portion through which the seal rod passes.

3. The gas circuit breaker of claim 1 , further comprising:
an operating mechanism for accommodating the actuator therein, the operating mechanism arranged at a side of the output shaft opposite to the insulating operation rod.

4. The gas circuit breaker of claim 3 , further comprising:
a unit support configured to support the container and the operating mechanism while
a connection portion for interconnecting the seal rod and the actuator is positioned therewithin.

5. The gas circuit breaker of claim 4 , wherein the unit support includes a cutout formed at its end near the operating mechanism.

6. The gas circuit breaker of claim 3 , further comprising:
a unit box attached to an external portion of the container and configured to accommodate the operating mechanism therein.

7. The gas circuit breaker of claim 6 , wherein the unit box has at least one detachable surface.

8. The gas circuit breaker of claim 6 , wherein the operating mechanism and the unit box are fixed to each other.

9. The gas circuit breaker of claim 6 , wherein the unit box is fixed to a base.

10. The gas circuit breaker of claim 1 , wherein the center axis of the insulating operation rod is substantially parallel to a base.

11. The gas circuit breaker of claim 1 , wherein the container includes an interface portion through which a main circuit conductor connected to the fixed contact passes, the center axis of the interface portion being substantially parallel to the center axis of the insulating operation rod.

12. The gas circuit breaker of claim 1 , wherein at least adjoining containers of a plurality of gas circuit breakers arranged side by side are fixed to each other.

Assignees

• Toshiba Kk

Inventors

• Yanagi Kosuke
• Matsushita Kozo
• Nakagawa Atsushi

Classifications

• H01H33/64 Primary

  wherein the break is in gas (vacuum switches H01H33/66) · CPC title