EP 3249106 A4 20181017 - QUICK COUPLER HAVING IMPROVED SAFETY
Title (en)
QUICK COUPLER HAVING IMPROVED SAFETY
Title (de)
SCHNELLKUPPLUNG MIT VERBESSERTER SICHERHEIT
Title (fr)
COUPLEUR RAPIDE AYANT UNE SÉCURITÉ AMÉLIORÉE
Publication
Application
Priority
- KR 20150008498 A 20150119
- KR 2016000553 W 20160119
Abstract (en)
[origin: EP3249106A1] A hydraulic cylinder of a quick coupler has an elongated hole formed at either a cylinder rod or a cylinder body such that one of the cylinder rod and the cylinder body is fitted onto a cylinder shaft of a coupler body and the other is rotatably coupled to a movable hook, and rotates the movable hook such that the movable hook is coupled to or released from a second coupling pin according to extension or retraction. A rotary key has a rotary key protrusion inserted into or withdrawn from a coupling groove of a fixed hook according to a rotation position thereof, and the rotary key protrusion is maintained in a state in which the protrusion is inserted into the coupling groove of the fixed hook by means of the elastic force of a rotary key spring, so as to prevent the separation of a first coupling pin from the coupling groove of the fixed hook. A stopper has a stopper hook coupled to or separated from a cylinder hook around the elongated hole, is supported by the elastic force of a stopper spring, and rotates the rotary key such that the rotary key protrusion is withdrawn from the coupling groove of the fixed hook when the hydraulic cylinder is retracted.
IPC 8 full level
CPC (source: EP)
E02F 3/3622 (2013.01); E02F 3/365 (2013.01); E02F 3/3663 (2013.01)
Citation (search report)
- [XA] GB 2473942 A 20110330 - HILL IAN [GB]
- [A] WO 2014072709 A1 20140515 - MILLER INT LTD [GB], et al
- See also references of WO 2016117909A1
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 3249106 A1 20171129; EP 3249106 A4 20181017; EP 3249106 B1 20231220; AU 2016209781 A1 20170810; AU 2016209781 B2 20200618; KR 101789909 B1 20171120; KR 20160089294 A 20160727; WO 2016117909 A1 20160728
DOCDB simple family (application)
EP 16740382 A 20160119; AU 2016209781 A 20160119; KR 2016000553 W 20160119; KR 20160006560 A 20160119