EP 2634360 A1 20130904 - LOCKING STRUCTURE FOR EXTENSIONABLELADDER
Title (en)
LOCKING STRUCTURE FOR EXTENSIONABLELADDER
Title (de)
VERRIEGELUNGSSTRUKTUR FÜR EINE AUSZIEHBARE LEITER
Title (fr)
STRUCTURE DE VERROUILLAGE POUR UNE ÉCHELLE EXTENSIBLE
Publication
Application
Priority
- CN 201010524708 A 20101028
- CN 2011001700 W 20111011
Abstract (en)
A locking mechanism for an extending ladder, the extending ladder comprises a plurality of telescopically collapsible columns (1) and a plurality of rungs (2), the locking mechanism comprises: a connection sleeve (3) for connecting the column (1) with corresponding rung (2); a plug pin (4) disposed inside the connection sleeve (3); a push button (6) and an automatic unlocking switch (7). The automatic unlocking switch (7) is rotatably disposed, a plughole (31) is provided on the bottom surface of the connection sleeve (3), a pushing protrusion (32) is provided protruding upward on the top surface of the connection sleeve (3). The locking mechanism not only capable of unlocking the single column step by step, but also automatically unlocking the adjacent upper locking mechanism after a lower locking mechanism is unlocked.
IPC 8 full level
CPC (source: EP)
E06C 1/125 (2013.01); E06C 7/06 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2634360 A1 20130904; EP 2634360 A4 20141119; CN 102003136 A 20110406; CN 102003136 B 20120912; WO 2012055159 A1 20120503
DOCDB simple family (application)
EP 11835433 A 20111011; CN 201010524708 A 20101028; CN 2011001700 W 20111011