Patent ID: 8307730
Filing Date: 2012-11-13
Classification: F16H,Y10T

Abstract:
1. A transmission device comprising: a gear train that can achieve a plurality of transmission speed ranges; a shift fork for changing meshing of the gear train; a shift drum for driving the shift fork; a rotatable shift spindle for driving the shift drum, the shift spindle includes and unifies with a spindle plate for transmitting a rotational drive force of the shift spindle to the shift fork and a groove formed into an annular shape along a peripheral portion of the shift spindle; a cover member for covering the gear train, the shift fork, the shift drum and the shift spindle, the shift spindle being rotatably supported by one side of the cover member; a positioning pin, said positioning pin being mounted by being inserted into a through hole formed on and through the cover member from outside of the cover member so that a distal end portion of the positioning pin projects from said one side of the cover member, the distal end portion being locked with the groove in the rotatable shift spindle; and a rib, said rib being formed inside the cover member; a sub shift spindle extending substantially parallel to the longitudinal direction of the shift drum; a sub spindle plate engaged with the spindle plate at a distal end of the spindle plate; a projecting strip extending on the one side of the cover member, the projecting strip being in direct contact with the rib, a distal end of the projecting strip coming into abutment with the sub spindle plate, wherein the spindle plate comes into abutment with the rib and is welded and secured to the shift spindle near a right end of the shift spindle, the spindle plate restrains the shift spindle from sliding in an axial direction of the shift spindle, and the groove is aligned with the through hole and the spindle plate is located between the rib and the positioning pin when the spindle plate comes into abutment with the rib, and wherein the rib is spaced apart from the positioning pin and in contact with the cover member.