EP 3074303 A1 20161005 - VARIABLE GEAR RATIO DEVICE
Title (en)
VARIABLE GEAR RATIO DEVICE
Title (de)
VORRICHTUNG MIT VARIABLEM ÜBERSETZUNGSVERHÄLTNIS
Title (fr)
DISPOSITIF À RAPPORT DE TRANSMISSION VARIABLE
Publication
Application
Priority
- IT MI20131995 A 20131129
- IB 2014066384 W 20141127
Abstract (en)
[origin: WO2015079399A1] A variable gear ratio device (1) is provided for comprising a planet gear (10) defining a rotation axis (10a), suitable to continuously vary the gear ratio and comprising at least one rocker gear (11); a spider (12) suitable to support the rocker gear (11) and defining a spider axis (12a) inclined in relation to the axis (10a); a sun gear (13) and a crown (14) defining, respectively, an inner (13a) and outer contact area (14a) for the rocker gear (11); wherein the inner contact area (13a) and the outer contact area (14a) are tapered in the same direction along the rotation axis (10a); and respectively define, at the points of contact with the rocker gear (11) and in relation to the rotation axis (10a), a first angle of inclination and a second angle of inclination different from each other; and wherein, on account of said torque variation, the rocker gear (11) is apt to passively translate in relation to said spider (12) along said spider axis (12a) varying its distance from said rotation axis (10a) and said contact points with said contact area (13a, 14a) and thus, the gear ratio of the variable gear ratio device (1); a torque regulator (16) suitable to command a reciprocal translation of said contact areas (13a, 14a) depending on such translation of the rocker gear (11).
IPC 8 full level
B62M 11/12 (2006.01); B62M 11/16 (2006.01); F16H 15/52 (2006.01)
CPC (source: EP)
F16H 15/52 (2013.01); B62M 11/12 (2013.01); B62M 11/16 (2013.01)
Citation (search report)
See references of WO 2015079399A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2015079399 A1 20150604; EP 3074303 A1 20161005; IT MI20131995 A1 20150530
DOCDB simple family (application)
IB 2014066384 W 20141127; EP 14815058 A 20141127; IT MI20131995 A 20131129