| 摘要 |
A recliner assembly for operatively interconnecting a seat back and a seat cushion allowing pivotal adjustment of the seat back relative to the seat cushion. The recliner assembly comprises an inner disc fixedly secured to the seat cushion and an outer disc fixedly secured to the seat back. The outer disc is rotatably nested within the inner dis and includes an annular rim of gear teeth extending radially inwardly. At least one pawl is adapted for lockingly engaging the annular rim of gear teeth on the outer disc and is disposed between the inner and outer discs. The pawl is radially moveable between a locked position, wherein the pawl is lockingly engaged with the annular rim of gear teeth on the outer disc, and an unlocked position, wherein the pawl is disengaged from the annular rim of gear teeth on the outer disc. A biasing member extends between the pawl and the inner disc for biasing the pawl in the locked position. A cam shaft assembly is rotatably journaled to both of the inner and outer discs for actuating the pawl between the locked and unlocked positions. The cam shaft assembly comprises a cylindrical shaft and a cam. The cylindrical shaft has proximal and distal ends. An annular shoulder is formed in the cylindrical shaft disposed between the proximal and distal ends and extending radially outwardly from the shaft. An annular recess formed in the annular shoulder. A ramped surface extends from the annular recess and tapers towards the proximal end. The cam has a center bore and a plurality of teeth extending radially inwardly from the bore. The cam has a hardness greater than that of the shaft. The cam is press fit onto the shaft and locating axially against the annular shoulder, such that material scraped from the shaft during assembly of the cam onto the shaft is displaced into the annular recess to ensure the proper alignment of the cam against the annular shoulder of the shaft.
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