Vehicle restraints with a barrier having rotational and translational motion

A vehicle restraint to selectively block and release a vehicle at a dock, the vehicle restraint comprising:

• a carriage frame including a first panel and a second panel that are spaced apart in an axial direction to define a space therebetween;
• a drive shaft supported by the carriage frame;
• a drive unit to rotate the drive shaft about a shaft axis and relative to the carriage frame;
• a hub connected to rotate with the drive shaft about the shaft axis, the hub having a central axis that is radially off center relative to the shaft axis;
• a barrier defining a bore to receive the hub, the barrier positioned within the space formed between the first panel and the second panel of the carriage frame, the barrier being movable relative to the carriage frame between an extended position and a retracted position in response to relative rotation between the hub and the barrier;
• a lifter borne by the hub;
• an abutment borne by the barrier, the lifter being movable in engagement with and disengagement from the abutment, the lifter to move the barrier rotationally upward when the lifter is in engagement with the abutment;
• a stop supported by the barrier;
• and
• a rocker supported by and movably coupled to at least one of the first panel or the second panel of the carriage frame such that the rocker remains within the space formed between the first panel and the second panel when the barrier is extended, the rocker including an upper facing surface and a lower facing surface, the rocker configured to move between a forward position and a rearward position relative to the carriage frame in response to upward movement of the barrier and engagement between the stop and the lower facing surface of the rocker, the rocker being configured to inhibit downward movement of the barrier when the stop is in engagement with the upper facing surface of the rocker, the stop of the barrier configured to disengage the rocker in response to the barrier moving to the extended position.