Patent ID: 8171817

Claim:
A control shaft assembly for a manual transmission, comprising: a control shaft that is reciprocated in a rectilinear direction through a transmission case and is rotated by a shift lever; a control finger unit fixed to the control shaft and moving together with the control shaft; a guide body fixed to the control shaft and guiding a shift position of the control shaft to prevent dual engagement of gears while shifting the gears; and a shift position detecting unit mounted to the control shaft for detecting the shift position of the control shaft; wherein the shift position detecting unit comprises: a lever stopper including a third shaft connective portion that is fixed to the control shaft and an extended portion that is extended from the third shaft connective portion in a radial direction thereof; and an actuating member mounted on the transmission case and coaxially coupled to and providing an elastic force to the extended portion of the lever stopper to detect the shift position of the control shaft; wherein an end surface of the extended portion of the lever stopper has a predetermined shape so as to prevent an over-stroke of a reverse speed, a fifth speed, and a sixth speed; wherein the predetermined shape is a concave shape formed toward a center shaft, the concave shape having a plurality of slanted surfaces thereto; wherein the plurality of slanted surfaces include: a center groove formed in a center portion of the extended portion to detect a neutral position; a first slanted surface formed in a direction of first and second speeds; a second slanted surface formed in a direction of the fifth and sixth speeds; and a third slanted surface formed in a direction of the reverse speed, and wherein a reverse over-stroke prevention bump and a fifth/sixth speed over-stroke prevention bump are formed at end portions of the end surface in a cross section of the extended portion of the lever stopper.