| 摘要 |
An improved printed circuit board wedge assembly having a center segment with sloped surfaces at its opposite ends and two end wedge segments having surfaces that abut against opposite ends of the center wedge segment. A drive shaft has a first ratchet member at one end, the first ratchet member engaging a second ratchet member having an elongated hex shaped member extending therefrom. The hex member is adapted to slide in a hex socket formed in an adjacent sleeve member. The drive shaft, having a threaded portion, extends lengthwise through a channel in the center wedge segment and connects together the two end wedge segments. A retaining ring is provided for captivating the driver portion of the assembly to the wedge segments. When the drive shaft is rotated in one direction, the two end wedge segments, together with the shaft, move transversely to the center wedge segment to fasten the PCB in place. The hexagonal shaped member transmits torque from an external drive to the first ratchet member. A snap ring is utilized to captivate the wedge segments and prevent them from falling off the shaft when in the relaxed position. A leaf spring is provided to maintain the individual end wedge segments longitudinally aligned with the center wedge segment when the shaft is loosened.
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