| 摘要 |
An apparatus for moving a member between a retracted position and an extended position includes a housing, a movement mechanism, a linear lead screw, a first carriage, and a second carriage. The housing has a curved path between the retracted position and the extended position. The lead screw has a longitudinal axis and threads. The movement mechanism is coupled to the lead screw to rotate the lead screw about the longitudinal axis. The first carriage has a connecting structure and a bore with threads that mate with the threads of the lead screw to move the carriage linearly along the longitudinal axis of the lead screw when the lead screw rotates. The second carriage is coupled to the member and has a connecting structure. The connecting structure of the second carriage operatively couples with the connecting structure of the first carriage to permit lateral and rotational displacement such that the member is moved through the curved path between the retracted position and the extended position as the first carriage moves linearly along the longitudinal axis of the lead screw.
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