EP 2120645 B1 20130109 - TENSIONING DEVICE COMPRISING A DIVERTED OR DEFLECTED TENSION SPRING
Title (en)
TENSIONING DEVICE COMPRISING A DIVERTED OR DEFLECTED TENSION SPRING
Title (de)
ZUGVORRICHTUNG MIT AB- ODER UMGELENKTER ZUGFEDER
Title (fr)
DISPOSITIF DE TRACTION À RESSORT DE TRACTION DÉVIÉ OU RENVOYÉ
Publication
Application
Priority
- DE 2008000256 W 20080213
- DE 102007008363 A 20070216
Abstract (en)
[origin: WO2008098563A1] The invention relates to a tensioning device comprising a tension spring that rests against a diversion or deflection roller while at least partially being wound around it, to a combined deceleration/acceleration device comprising said tensioning device and to a guide system comprising said deceleration/acceleration device. The total spring stroke of the tension spring is at least 50% of its nominal stroke. The tension spring comprises at least one zone of high spring rigidity and at least one zone of low spring rigidity. The zone of high spring rigidity rests against the diversion or deflection roller. In the zone of high spring rigidity, the quotient of the average diversion or deflection radius and the differential stroke of the outer and inner spring zone per spring coil is greater than 50. The invention provides a device which essentialy rules out spring fracture.
IPC 8 full level
A47B 88/04 (2006.01)
CPC (source: EP US)
A47B 88/467 (2016.12 - EP US); E05F 1/16 (2013.01 - EP US); E05F 5/027 (2013.01 - EP US); E05F 5/003 (2013.01 - EP US); E05Y 2800/24 (2013.01 - EP US); E05Y 2900/20 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008098563 A1 20080821; DE 102007008363 B3 20080918; EP 2120645 A1 20091125; EP 2120645 B1 20130109; ES 2404005 T3 20130523; JP 2010517728 A 20100527; JP 5284287 B2 20130911; PL 2120645 T3 20130628; US 2010007254 A1 20100114; US 8186489 B2 20120529
DOCDB simple family (application)
DE 2008000256 W 20080213; DE 102007008363 A 20070216; EP 08715485 A 20080213; ES 08715485 T 20080213; JP 2009549772 A 20080213; PL 08715485 T 20080213; US 58318509 A 20090814