| 摘要 |
A pin-type synchronizer mechanism (86) with self-energizing ramps is configured to provide self-energizing forces for reducing an operat or applied shift force (Fo) and/or shift time. The self-energizing forces are provided by self-energizing ramp surfaces (29e,29f,29g,29h) and (111a,111b,111c,111d) respectively, formed in external splines (29) of a sha ft 28 and in internal teeth (111) extending radially inward from a shift flange (110). The ramp surfaces provide an additive axial force (F a) applied to friction rings (114,116) via shift flange blocker surfaces (110d,110e) reacting respectivel y against pin blocker surfaces (118c,118d). The shift flange carries improved pre-energizer and neutral position centering assemblies (120) including pre-energizer plungers (124) and neutral position plungers (126) respectivel y for axially retaining pins (118) and friction rings (114,116) in a neutral position relative to flange (110) and for neutral positioning flange (110) relative t o recesses (128) in shaft (28). |
