| 摘要 |
A seat recliner comprising: a first hinge member (10) adapted to be fixed to a seat proper; a second hinge member (12) adapted to be fixed to a seat back; a spring (18) coupled between said first (10) and second (12) hinge members for pivotably biasing said second hinge member (12) in one direction about an axle (16) relative to said first hinge member (10); internal teeth (22) formed in said second hinge member (12) along an arcuate surface centered on said axle (16); a bearing plate (30) having upper teeth (34) for locking cooperation with said internal teeth (22), said bearing plate (30) having front and rear faces (40,44); spaced guide walls (24,28) formed in said first hinge member (10) for slidable cooperation with said front and rear faces (40,44) of said bearing plate; and control members for controlling the motion of said bearing plate (30) into and out of engagement with said internal teeth (22), said control members including a lever (50) pivotably connected to said first hinge member (10) and a cam (48) in unitary motion with said lever (50) for camming said upper teeth (34) of said bearing plate (30) into engagement with said internal teeth (22) of said second hinge member (12); wherein said bearing plate (30) engages at two different portions of said front and rear faces (40,44) thereof said guide walls (24,28) to maintain locking engagement of said upper teeth (34) with said internal teeth (22). |
