Switch
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSuenobu Hamano, Hiroyuki Sasao, Katsuhiko Horinouchi, Mikio Hidaka, Yoshiki Hirano, Haruhiko Kohyama
Life of this patent
Estimating the term…
Abstract
A switch for use in electric power includes a fixed contact, a moving contact performing a switching operation with respect to the fixed contact, a cylinder working with the moving contact, a piston slidably provided in the cylinder, a buffer chamber which is surrounded by the cylinder and the piston, and is filled with an arc-extinguishing gas, and a second insulating nozzle mounted to an end of the cylinder on the side of the fixed contact, wherein the arc-extinguishing gas in the buffer chamber is sprayed through the nozzle on an arc generating between the fixed contact and the moving contact at an opening time of the moving contact.
Claims17
A switch comprising:
- a fixed contact;
- a moving contact performing a switching operation with respect to said fixed contact;
- a cylinder working with said moving contact;
- a piston slidably provided in said cylinder;
- a buffer chamber which is surrounded by said cylinder and said piston, and is filled with an arc-extinguishing gas;
- a first insulating nozzle mounted to an end of said cylinder on the side of said fixed contact;
- an outer cylinder mounted to surround an outer periphery of said fixed contact;
- a second insulating nozzle mounted to an end of said outer cylinder on the side of said moving contact, into which said moving contact is slidably inserted;
- and
- a pressure accumulator which is surrounded by said outer cylinder and said second insulating nozzle, and is filled with said arc-extinguishing gas,
- wherein said arc-extinguishing gas in said buffer chamber is sprayed outwardly through said first insulating nozzle on an arc generating between said fixed contact and said moving contact at an opening time of said moving contact.
A switch comprising:
- a fixed contact;
- a moving contact performing a switching operation with respect to said fixed contact;
- a cylinder working with said moving contact;
- a piston slidably provided in said cylinder;
- a buffer chamber which is surrounded by said cylinder and said piston, and is filled with an arc-extinguishing gas;
- a first insulating nozzle mounted to an end of said cylinder on the side of said fixed contact;
- wherein said arc-extinguishing gas in said buffer chamber is sprayed outwardly through said nozzle on an arc generating between said fixed contact and said moving contact at an opening time of said moving contact,
- wherein a rod-like or annular first permanent magnet is provided in said fixed contact, and said first permanent magnet establishes a magnetic field to drive said arc generating between said fixed contact and said moving contact at said opening time.
Dependencies are inferred from the claim text.