Dewertokin Gmbh

Dewert Antriebs- Und Systemtechnik Gmbh

Heinrich Dück

Andreas Roither

Christian Müller

Jürgen Martin

Hartmut Klimm

Peter Minnig

Christian MÜLLER

An electromotive dual drive for adjustment of two different furniture parts of a piece of furniture includes a housing having opposite end sections. Each end section is formed with a shaft holder for receiving a pivot shaft of the piece of furniture. Two drive units are arranged one behind another in the housing in a longitudinal direction, with each drive unit including a drive motor, a transmission, and a spindle drive including a spindle which acts on an output member operably connected to a respective one of the pivot shafts. The spindles and/or the output members of the drive units are sized of different lengths, and the drive motor of one of the drive units and the drive motor of the other one of the drive units are spaced from the shaft holders, respectively, at different distances.

Electromotive dual drive

An electromotive linear drive, in particular for adjusting movably mounted parts of lounging and seating furniture, has a drive motor, a threaded spindle, a speed-reducing gear unit arranged between the drive motor and the threaded spindle, and a spindle nut () located on the threaded spindle. The spindle nut is optionally lockable in the direction of rotation and movable in the axial direction of the threaded spindle, depending on the direction of rotation of the threaded spindle. A lifting element can be driven by the axial movement of the spindle nut to adjust the movable furniture parts. Such a linear drive has a simple design, is easy to assemble and operate, and guarantee a robust mounting arrangement for the drive parts.

Linear drive for furniture

An electromotive linear drive with a drive unit having a drive motor and a spindle driven by the drive unit. The drive includes a spindle nut disposed on the spindle. The spindle nut is movable longitudinally on the spindle. A lifting tube is operatively connected to the spindle nut so that the spindle nut moves together with the lifting tube. A connecting part is disposed on a free end of the lifting tube. A braking assembly is disposed in the lifting tube and is operatively connected to the spindle nut via an adjustable, frictional connection. The braking assembly is manipulable. During operation of the drive motor, the spindle nut frictionally engages the braking assembly, preventing rotation of the spindle nut. The frictional connection may be adjusted to permit the spindle nut to rotate with respect to the spindle, thereby manipulating a linear speed component of the lifting tube.

Electromotive linear drive

A linear drive for adjusting at least one movable structure includes at least one spindle drive having a rotatable spindle. Disposed on the spindle and restrained against rotation is a lifting nut which is linked to the movable structure. At least one safety mechanism is disposed on the spindle without connection to the lifting nut and restrained against rotation. The safety mechanism includes an inner nut attached to the spindle and an outer guide bushing attached onto the inner nut, wherein the inner nut and the guide bushing have an engagement structure which effects a form-fitting engagement between the inner nut and the guide bushing during normal operation and is so constructed as to effect a disengagement between the inner nut and the guide bushing, when the safety mechanism is subjected to a predefined load torque.

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Espelkamp, Germany

Heinrich Dück