Strutless synchronizer

Patent · Tue Oct 11 04:00:00 EDT 1988

OSTI ID:6619978

Razzacki, S T; Holbrook, G L

This patent describes a gear synchronizer assembly for a synchromesh transmission, the assembly comprising at least one ratio gear loosely mounted on a shaft of the transmission and concentric with the principal axis of the shaft, the ration gear formed with an external conical surface, an externally splined hub fixed on the shaft and sleeve having internal splines slidably coupled to the hub external splines and slidable thereon by fork means from a neutral position to an outboard operative position for engaging the ratio gear to couple the ratio gear in rotation with the shaft, a blocking ring having outboard and inboard directed faces and an internal conical surface disposed for controlled sliding abutment with the ratio gear external conical surfaces, the blocking ring having an outer cylindrical surface formed with a radially extending splined tooth surface at the outboard face, an annular continuous compression spring between the sleeve and the blocking ring to press the blocking ring internal conical surface against the ratio gear external conical surface and couple the same in rotation when the sleeve is initially displaced outboard toward the operative position, the compression spring being deformed as the sleeve advances further to the operative position to permit the sleeve to advance therepast and engage the now rotating ratio gear, and an inwardly extending radial tooth at one end of at least three equally spaced sleeve internal splines, each of the equally spaced radial tooth having a longitudinally extending angled end surface ramp, the radial tooth end surface ramp facing the blocking ring and positioned to contact and inwardly deform the spring and pass thereover as the sleeve is advanced in an outboard direction to engage the ratio drive gear, the improvement in the gear synchronizer assembly.

• Assignee: Chrysler Motors Corp., Highland Park, MI
• Patent Number(s): US 4776228
• OSTI ID: 6619978
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ALIGNMENT
DESIGN
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OPERATION
SERVICE LIFE
SLEEVES
SPRINGS
SYNCHRONIZATION
VEHICLES
WEAR