2nd Step (See Fig.3-5)
After the elimination of the clearance X
1
and X , the force above acts on the inserters (7)
2
and synchromesh cone (4) through respective
friction surface and makes the inserters
inclined by an angle against the spring force to
contact with synchromesh cone. At this time
the mesh sleeve moves by a distance of Z.
3rd Step (See Fig.3-6)
Fig.3-6 to Fig. 3-10 are all vertical views.
The force acting on the block ring creates
a friction moment between synchromesh cone
and block ring and in turn makes the block
ring turn an angle and the side of the notches
of the block ring contact with the side of
inserters. The mesh sleeve and the block ring
turn an angle and the side on the notches of
the block ring keeps in position at this time.
4th Step (See Fig.3-7)
While the completing the 3rd step, the
mesh sleeve shifts over a distance of Z and
the chamfer (15) of the block ring comes
into contact with the chamfer of the mesh
sleeve spline (6) and the friction torque
between the synchromesh cone and block
ring gradually increases and the inertial
moment of the gear (11) gradually decreases until the former’s value is bigger than the
latter’s, i.e. Tc>Ti, driving the gear.
Fig. 3-7
Fig. 3-6
Fig. 3-5
-22-
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