Gas Circuit Breaker
AssigneeHitachi, Ltd.
InventorsHiroaki HASHIMOTO, Kenichi OKUBO
Life of this patent
Estimating the term…
Abstract
The gas circuit breaker includes a main shaft which is a rotating shaft of a main lever connected to an opening spring, a cam shaft which is a rotating shaft of a cam connected to a closing spring, a main shaft holding member which holds the main shaft, a cam shaft holding member which holds the cam shaft, and a bracket which holds the main shaft holding member and the cam shaft holding member. A through hole is provided in a portion of the bracket between the main shaft holding member and the cam shaft holding member, and a heat generating member is provided at least on a portion of the through hole.
Claims6
A gas circuit breaker comprising:
- a pair of contactors disposed by being opposed to each other in a grounded container;
- and
- an operating mechanism including a closing spring and an opening spring for driving at least one of the pair of contactors in a closing direction and in an opening direction, respectively, by means of a link mechanism,
- wherein the operating mechanism includes a main shaft being a rotating shaft of a main lever connected to the opening spring;
- a cam shaft being a rotating shaft of a cam connected to the closing spring;
- a main shaft holding member holding the main shaft;
- a cam shaft holding member holding the cam shaft;
- and a bracket holding the main shaft holding member and the cam shaft holding member,
- wherein a through hole is provided in a portion of the bracket between the main shaft holding member and the cam shaft holding member, and
- wherein a heat generating member is provided at least on a portion of the through hole.
A gas circuit breaker comprising:
- a pair of contactors disposed by being opposed to each other in a grounded container;
- and
- an operating mechanism including a closing spring and an opening spring for driving at least one of the pair of contactors in a closing direction and in an opening direction, respectively, by means of a link mechanism,
- wherein the operating mechanism includes a main shaft being a rotating shaft of a main lever connected to the opening spring;
- a cam shaft being a rotating shaft of a cam connected to the closing spring;
- a main shaft holding member holding the main shaft;
- a cam shaft holding member holding the cam shaft;
- and a bracket holding the main shaft holding member and the cam shaft holding member,
- wherein a reinforcing member for connecting the main shaft holding member and the cam shaft holding member is provided therebetween,
- wherein a through hole is provided in a region surrounded by the main shaft holding member, the cam shaft holding member, and the connecting reinforcing member, and
- wherein a heat generating member is provided at least on a portion of the through hole.
Dependencies are inferred from the claim text.