Interlock mechanism

An interlock mechanism comprising:

• a shift-and-select shaft allowed to be displaced in an axial direction and rotated in a rotation direction;
• a first fork arranged so as to oppose to the shift-and-select shaft;
• a second fork arranged so as to oppose to the shift-and-select shaft;
• a first inner lever provided on the shift-and-select shaft, engaged with the first fork while the shift-and-select shaft is positioned at a first rotation position and disengaged from the first fork while the shift-and-select shaft is positioned at rotation positions other than the first rotation position;
• a second inner lever provided on the shift-and-select shaft, engaged with the second fork while the shift-and-select shaft is positioned at a second rotation position, which is located at a position further forwardly rotated from the first rotation position and disengaged from the second fork while the shift-and-select shaft is positioned at the rotation positions other than the second rotation position;
• and
• an interlock member coaxially arranged around an outer circumference of the shift-and-select shaft, which is allowed to rotate together with the shift-and-select shaft in the rotation direction as a unit and not allowed to be displaced in the axial direction, wherein
• a first engagement portion is formed on the first fork so as to project therefrom;
• a second engagement portion is formed on the second fork so as to project therefrom;
• a first engaged portion is formed on the inter lock member by cutting off a portion thereof and engaged with the first engagement portion while the interlock member is positioned at the second rotation position;
• and
• a second engaged portion is formed on the interlock member by cutting off a portion thereof and engaged with the second engagement portion while the interlock member is positioned at the first rotation position.