Patent ID: 8210067

Claim:
A shifting device for a manual transmission, the shifting device comprising: at least one shift rocker ( 1 ) having a U-shape and being formed by first and second rocker arms ( 3 , 4 ) connected to one another by a rocker bridge ( 2 ); the at least one shift rocker ( 1 ) being arranged over a shifting packet of a transmission shaft, the shifting packet comprising a shift sleeve engaging with an annular groove of the shift sleeve via first and second slide-blocks; first and second bearing points ( 7 , 8 ) each respectively arranged on one of the first and second rocker arms ( 3 , 4 ) and together defining a transverse axis ( 9 ); the first and the second slide-blocks each being attached to a respective holder ( 5 , 6 ) of the first and second rocker arms ( 3 , 4 ) so as to be mounted to pivot about the transverse axis ( 9 ); the at least one shift rocker ( 1 ) comprising a carrier element ( 11 ), located off-center on the rocker bridge ( 2 ), for engaging with a shifting shaft arranged parallel to the transmission shaft; the first and the second rocker arms ( 3 , 4 ) of the at least one shift rocker ( 1 ) being shaped differently from one another, and the first rocker arm ( 3 ), which is closer to the carrier element ( 11 ), having a lower spring rigidity than the second rocker arm ( 4 ) located farther away from the carrier element ( 11 ) so as to produce different spring rigidities; a section of the first rocker arm ( 3 ), between the first bearing point ( 7 ) and the respective slide-block holder ( 5 ), being a spring element ( 15 ) which is elastic in a pivoting direction ( 14 ), while the second rocker arm ( 4 ), located farther away from the carrier element ( 11 ), being a bracket ( 16 ) with relatively greater spring rigidity; and the spring element ( 15 ) being configured as a spiral spring ( 17 ) having a wider outer spiral curve ( 18 ) and a narrower inner spiral curve ( 19 ) and lying in a plane of the pivoting direction ( 14 ).