Electric motor-driven adjustment drive

Abstract

The invention relates to an electromotive adjustment drive which is operated by a safety voltage, for instance, an adjustment drive for the adjustable components of pieces of furniture. The adjustment drive is equipped with a hand-operated device and a control unit which is operated with the device and connected by at least one cable to a voltage source to which the mains voltage can be supplied. The adjustment drive is so configured as to allow an electrical separation between the voltage source and the transformer, when the adjustment drive is not in operation, without requiring special cables. Furthermore, the adjustment drive should be configured in such a way that the item equipped with the adjustment drive does not contain any cables or lines to which mains voltage is supplied. According to the invention, there is provided a power supply module (12) which is spatially separated from the control unit (14) and arranged between the control unit (14) of the adjustment drive (11) and the voltage source. Mains voltage is supplied to the power supply module on the input side and safety voltage flows out on the output side. The power supply module (12) contains at least one transformer (18) and an upstream power disconnection circuit (19). The power chord (16) leading from the voltage source to the power supply module (12) is detachably connected by means of a plug-and-socket connector. The power chord is fitted with a plug and the housing of the power supply module (12) is equipped with a socket receptacle or a jack. The transformer (18) is an electronic transformer.

Dependencies are inferred from the claim text.