Patent ID: 6725738
Filing Date: 2004-04-27
Classification: F16H,Y10T

Abstract:
A gear shift apparatus for a manual transmission having a shift pattern comprised of a plurality of forward select positions for selecting a plurality of forward transmission gear stages, respectively, and a reverse select position arranged outside said plurality of forward select positions for selecting a reverse transmission gear stage, for selecting one of said plurality of forward transmission gear stages and said reverse transmission gear stage through a selecting manipulation and a shifting manipulation, said gear shift apparatus comprising:a select cam responsive to said selecting manipulation to pivotally move to a plurality of forward positions and a reverse position corresponding to said plurality of forward select positions and said reverse select position, respectively, to permit a selection by said shift manipulation from said plurality of forward transmission gear stages and said reverse transmission gear stage; a restraint cam pivotally movable between a prohibiting position at which said restraint cam comes into engagement with said select cam to prohibit said select cam from pivotally moving to said reverse position, and a permitting position at which said restraint cam is retraced from said prohibiting position to permit said select cam to pivotally move to said reverse position; urging means for urging said restraint cam toward said permitting position; an actuator coupled to said restraint cam, said actuator having a moving element for driving said restraint cam from said permitting position to said prohibiting position; and prohibition releasing means for pressing said restraint cam into a pivotal movement from said prohibiting position to said permitting position when said select cam is pivotally moved toward a forward position in response to said selecting manipulation toward a forward select position while said select cam is prohibited from pivotally moving to said reverse position by said restraint cam remaining at said prohibiting position.