Power control unit with an appliance switch carrying a switching contact
AssigneeE.G.O. Elektro-Geratebau GmbH
InventorsWilli Reichert, Siegfried Mannuss
Life of this patent
Estimating the term…
Abstract
For reducing the click rate and improving the setting accuracy, in the case of a power control unit (11) for electric heating appliances, a contact separation (D) of two contacts (14, 15) can be varied independently of a position change of an appliance switch (12) with a snap-action element (16). Preferably, the position of the counterstop (33) is modified by an application thereof to a separation cam disk (36). The appliance switch position is fixed by means of a power cam disk (28) and determines the power level. In this way it is possible to randomly set within wide limits the click rite for each setting of the relative on period.
Claims14
A power control unit for electric heating appliances, said power control unit including an appliance switch, a position change of said appliance switch changing a setable power level of said power control unit, said setable power level having a range from a lower to a middle to an upper power level, said appliance switch comprising:
- a switching contact, said switching contact positionable between `on` and `off` positions;
- an opposite contact;
- a counterstop with a variable contact separation distance (D) with respect to said opposite contact, said switching contact in said `on` position engaging said opposite contact and supplying power to the electric heating appliance, and said switching contact in said `off` position engaging said counterstop, said contact separation distance (D) at said middle power level is greater than said contact separation distance (D) at said lower and upper power levels;
- and,
- an adjusting device, said adjusting device comprising:
- a power adjusting device for said power level,
- a contact separation adjusting device for adjusting the contact separation distance (D), said contact separation adjusting device separate from said power adjusting device, and
- actuating means for actuating said power adjusting device and said contact separation device.
Dependencies are inferred from the claim text.