Electromotive furniture drive including a power supply device

摘要

An electromotive drive for furniture, includes a power supply device, a manual control, and a control device. The power supply device has an disconnecting unit that can be controlled by means of a control line, the electrical control signal of said control line being able to be modified by a switching contact of the manual control such that, when the manual control has not been actuated, the power supply device can be switched into the “disconnection” operating state, said disconnecting unit being connected to a signal feedback arrangement of a control circuit of the power supply device and being integrated in a path of said signal feedback arrangement, or said disconnecting unit being set in, or placed on, an input path or an output path of the control device.

主权项

1. An electromotive furniture drive for adjusting movable furniture components relative to one another, comprising:
a power supply device constructed as a switched-mode power supply unit and configured for assuming a “disconnection” operating state and an “operation” operating state, said power supply device including a mains connection for connection to a mains, wherein the power supply device is configured to transform an input voltage on a mains side into a low voltage on an output side, said power supply device further comprising an isolating transformer or a transformer unit for electrical isolation between the mains-connected input side and the low-voltage-supplying output side for operation of the electromotive furniture drive, an intermediate circuit, a control device for controlling the switched-mode power supply unit, a control supply unit associated with the control device, and a controllable disconnecting unit; a manual control operably connected to the controllable disconnecting unit via a control line and having a switching contact for changing an electric control signal of the control line, wherein in response to a change of the control signal said disconnecting unit causes the control device to directly switch the power supply device to the operating state of “disconnection” in a non-actuated state of the manual control; at least one electric motor configured for operation in opposite directions of rotation; a speed reduction gear arranged downstream of the electric motor; and a gear arranged downstream of the speed reduction gear.