Spring-force drive for a power switch
AssigneeSprecher Energie AG
InventorsMax Kuhn, Rudi Schmidt
Life of this patent
Estimating the term…
Abstract
Two disks per vacuum switch tube are mounted on a drive shaft, the disks having grooves running around the drive shaft and open in relation to one another. In the grooves of two of these disks, a cylindrical follower is guided, the movement of which is transmitted via a link to a swivel lever and to a movable switch contact. The drive shaft is driven, supported via a releasable support member in the switch-on and in the switch-off position, in a clockwise direction by the spiral spring in order to switch off or switch on the power switch. The follower is restrictedly guided in the grooves of the disks, whereby the position of the movable switch contact is obliged to correspond to the corresponding rotation position of the drive shaft.
Claims12
A spring-force drive for a power switch, in particular a vacuum switch for medium-high voltage, said spring force drive comprising,
- a drive shaft,
- drive means for driving the drive shaft by a spring arrangement for switching on and off the power switch in the same direction of rotation of the drive shaft,
- support means for releasably impeding the drive shaft from turning in a switch-off and a switch-on position,
- at least one disk of a cam disk arrangement with a control cam mounted on the drive shaft acting with a pushing force on a reciprocating member connected operatively to at least one movable switch contact, the at least one disk being fixed in terms of rotation to move the reciprocating member to and fro between two final positions,
- the at least one disk having at least one groove forming the control cam running around the drive shaft and being open in the direction of the drive shaft for acting on the reciprocating member with a pulling force.
Dependencies are inferred from the claim text.