Transmission gear synchronizer blocker ring formed of a thermoplastic material

A transmission gear synchronizer comprising:

• a sliding sleeve having an inner surface defining a plurality of sleeve teeth extending radially inward from the inner surface of the sliding sleeve towards a transmission shaft,
• a hub having a plurality of hub gear teeth extending radially outward from a root diameter of the hub, the hub configured to be received within the sliding sleeve;
• and
• a blocker ring formed from a thermoplastic material and disposed adjacent the hub, the blocker ring having (i) a plurality of molded clutch teeth extending radially outward from a root diameter of the blocker ring, and (ii) an inner surface defining a plurality of molded grooves extending axially along the inner surface of the blocker ring, wherein each molded groove of the plurality of molded grooves is disposed substantially parallel to a longitudinal axis of the blocker ring.

A transmission gear synchronizer comprising:

• a sliding sleeve having an inner surface defining a plurality of sleeve teeth extending radially inward from the inner surface of the sliding sleeve towards a transmission shaft, each sleeve tooth of the plurality of sleeve teeth having a tip, the tip defined by a first surface disposed at a first angle relative to a longitudinal axis of a transmission shaft and a second surface disposed at a second angle relative to the longitudinal axis of the transmission shaft;
• a hub having a plurality of hub gear teeth extending radially outward from a root diameter of the hub, the hub configured to be received within the sliding sleeve;
• and
• a blocker ring formed from a thermoplastic material and disposed adjacent the hub, the blocker ring having:
• a plurality of molded clutch teeth extending radially outward from a root diameter of the blocker ring, each molded clutch tooth of the plurality of molded clutch teeth having an end surface defined by a third surface disposed at a third angle relative to the longitudinal axis of the transmission shaft and a fourth surface disposed at a fourth angle relative to the longitudinal axis of the transmission shaft, the second surface is configured to engage the third surface during a transmission upshift event and the first surface is configured to engage the fourth surface of an adjacent molded clutch tooth of the blocker ring during a transmission downshift event, and an inner surface defining a plurality of molded grooves extending axially along the inner surface of the blocker ring, each molded groove of the plurality of molded grooves is disposed substantially parallel to a longitudinal axis of the blocker ring.