ELECTROMOTIVE FURNITURE DRIVE AND ITEM OF FURNITURE
The invention relates to an electric motor-driven furniture drive mechanism ( 4 ) for adjusting moveable components of an item of furniture ( 1 ), in particular functional furniture, comprising at least one electric motor-driven adjustment drive mechanism ( 4 a, 4 b ) having a control device ( 5 ) and at least one operating device ( 6 ), a monitoring device ( 7 ) having at least one detection device ( 10 ) for monitoring at least one monitoring region ( 9 ) and forming an anti-trap protection system for the associated item of furniture ( 1 ). The electric motor-driven furniture drive mechanism ( 4 ) is characterised in that the at least one detection device ( 10 ) has at least one sensor unit ( 11 ) which is in the form of or comprises a piezo cable. The invention also relates to an item of furniture having an electric motor-driven furniture drive mechanism ( 4 ).
1 .- 14 . (canceled)
15 . An electromotive furniture drive for adjusting a movable component of an item of furniture, in particular functional furniture, said electromotive furniture drive comprising:
an electromotive adjustment drive mechanism including a control device and an operating device; and
a monitoring device including a detection device for monitoring a monitoring region and forming an anti-trap protection system for the item of furniture to be assigned, said detection device including a sensor unit which is designed as a piezo cable or comprises a piezo cable.
16 . The electromotive furniture drive of claim 15 , wherein the sensor unit includes a support as underpadding.
17 . The electromotive furniture drive of claim 15 , wherein the sensor unit includes a sheath.
18 . The electromotive furniture drive of claim 15 , wherein the sensor unit is configured for automatic reset after undergoing a deformation by an actuating force.
19 . The electromotive furniture drive of claim 15 , wherein the sensor unit includes two electrically conductive lines as connection cables.
20 . The electromotive furniture drive of claim 15 , wherein the piezo cable has a round cross-section.
21 . The electromotive furniture drive of claim 15 , wherein the sensor unit comprises a PVDF layer.
22 . The electromotive furniture drive of claim 15 , wherein the piezo cable is formed as a flat cable.
23 . The electromotive furniture drive of claim 22 , wherein the flat cable is a flexible printed circuit board.
24 . The electromotive furniture drive of claim 15 , wherein the monitoring device is configured to evaluate a signal from the detection device with regard to an amplitude and/or a signal characteristic.
25 . The electromotive furniture drive of claim 24 , wherein the monitoring device is configured to discriminate signals after various events on the basis of the amplitude and/or the signal characteristic.
26 . The electromotive furniture drive of claim 25 , wherein the monitoring device and the control device are configured to slow down, stop and/or reverse a direction of movement of the electromotive adjusting drive after detection of a certain event.
27 . The electromotive furniture drive of claim 25 , further comprising a separate signal or switching output which is activated when a predeterminable one of the events is recognized.
28 . An item of furniture, comprising an electromotive furniture drive which comprises an electromotive adjustment drive mechanism including a control device and an operating device, and a monitoring device including a detection device for monitoring a monitoring region and forming an anti-trap protection system for the item of furniture to be assigned, said detection device including a sensor unit which is designed as a piezo cable or comprises a piezo cable.
29 . The item of furniture of claim 28 , wherein the piezo cable has a round cross-section.
30 . The item of furniture of claim 28 , wherein the piezo cable is formed as a flat cable.
31 . The item of furniture of claim 30 , wherein the flat cable is a flexible printed circuit board.
32 . The item of furniture of claim 28 , wherein the monitoring device is configured to evaluate a signal from the detection device with regard to an amplitude and/or a signal characteristic.
33 . The item of furniture of claim 28 , wherein the monitoring device and the control device are configured to slow down, stop and/or reverse a direction of movement of the electromotive adjusting drive after detection of a certain event.
34 . The item of furniture of claim 33 , wherein the electromotive furniture drive includes a separate signal or switching output which is activated when the event is recognized.