Transmission

A transmission comprising:

• a rotating shaft;
• a coupling sleeve coupled to the rotating shaft to rotate with the rotating shaft;
• a variable speed gear mounted on the rotating shaft to selectively rotate on the rotating shaft;
• a clutch gear embedded in a side surface of the variable speed gear to selectively engage the coupling sleeve;
• a shifting fork operatively engagable with an outer peripheral area of the coupling sleeve to move the coupling sleeve in an axial direction of the rotating shaft to selectively engage the coupling sleeve with the clutch gear with a part of the coupling sleeve being axially inserted into the variable speed gear;
• and
• a lubricant supplying structure including a lubricant guiding surface configured and arranged to direct lubricant to the clutch gear by diverting the lubricant against a side surface of the shifting fork that faces the clutch gear and the coupling sleeve, the lubricant guiding surface at least partially overlaps the shifting fork when viewed in the axial direction.