Vacuum switch
AssigneeABB Patent GmbH
InventorsDietmar Gentsch, Joseph H. F. G. Lipperts
Life of this patent
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Abstract
A vacuum switching chamber includes a switching chamber housing having two housing parts. The two housing parts are constructed in the shape of pots or bells and each have a base which encloses an opening through which a respective supporting stalk passes. A stationary contact piece and a moving contact piece are each carried on a respective one of the stalks. The structural size of the vacuum switching chamber is reduced by inwardly drawn bases and furthermore, components and solder foils which would be used in addition to the cylindrical switching chamber housing are rendered unnecessary.
Claims9
A vacuum switch with an internal switching chamber, comprising:
- an approximately cylindrical switching chamber housing formed of insulating material and having two axial end segments and a cylindrical section;
- a first rod engaging one of said axial end segments of said switching chamber housing and carrying a stationary contact piece;
- a second rod engaging the other of said axial end segments of said switching chamber housing and carrying a movable contact piece;
- said switching chamber housing with said contact pieces and said rods defining an electrical field with electrical field lines in the internal switching chamber;
- a bellows mounted on said switching chamber housing and having one end fastened to said switching chamber housing and another end fastened to and enclosing said second rod;
- and
- at least one radially inwardly drawn base at least at one of said end segments of said switching chamber housing, said at least one radially inwardly drawn base enclosing an opening through which one of said rods passes inwardly and being connected to said cylindrical section in the shape of an arc, such that said inwardly drawn base extends essentially parallel to the electrical field lines defined inside the internal switching chamber when said contact pieces are not in mutual contact.
Dependencies are inferred from the claim text.