EP 2767367 B1 20161207 - TRANSMISSION SWITCHING DEVICE OF ELECTRIC HAMMER
Title (en)
TRANSMISSION SWITCHING DEVICE OF ELECTRIC HAMMER
Title (de)
ÜBERTRAGUNGSUMSCHALTVORRICHTUNG EINES ELEKTRISCHEN HAMMERS
Title (fr)
DISPOSITIF DE COMMUTATION DE TRANSMISSION DE MARTEAU ÉLECTRIQUE
Publication
Application
Priority
- CN 201210531228 A 20121211
- CN 2013085366 W 20131017
Abstract (en)
[origin: EP2767367A1] The present invention discloses a transmission switching device for electric hammers, comprising an intermediate shaft provided thereon with an intermediate shaft gear, a transmission gear, pendulum bar bearings, and an intermediate shaft sleeve. The transmission gear extends outward to form a connection portion sleeved on one end of the intermediate shaft sleeve. The pendulum bar bearings are sleeved on the connection portion and the intermediate shaft sleeve, respectively. Keyway fitting structures are provided between the other end of the intermediate shaft sleeve and the intermediate shaft, the connection portion and the pendulum bar bearings. On the outer peripheral side of the intermediate shaft sleeve, provided is a displacement bearing, the inner ring of which is the intermediate shaft sleeve while the outer ring of which is provided with a groove inside which a gearshift is connected. The present invention has the following advantages: the transmission mechanism and the gearshift are relatively still, so that there is no friction, wear, heat and oil leakage therebetween, resulting in prolonged service life, reduced amount of maintenance, no tooth breakage and high working efficiency.
IPC 8 full level
B25D 16/00 (2006.01)
CPC (source: EP)
B25D 11/062 (2013.01); B25D 16/006 (2013.01); B25D 2216/0015 (2013.01); B25D 2216/0023 (2013.01); B25D 2216/0038 (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 2767367 A1 20140820; EP 2767367 A4 20151014; EP 2767367 B1 20161207; CN 102975174 A 20130320; CN 102975174 B 20150708; WO 2014090041 A1 20140619
DOCDB simple family (application)
EP 13840136 A 20131017; CN 201210531228 A 20121211; CN 2013085366 W 20131017