AN AUTOMATIC MOVING TYPE OF TRAILER WITH VARIABLE STRUCTURE FORWARD AND BACKWARD

摘要

PURPOSE: An automatically movable trailer with variable front and rear structures is provided to eliminate a separate space for the variation of a trailer using a front frame and a rear frame which are movable around a middle frame. CONSTITUTION: An automatically movable trailer with variable front and rear structures comprises a pair of middle sliders (111), a pair of front sliders (121), and a pair of rear sliders (131). A movable screw is installed inside the pair of middle sliders. The pair of middle slider is joined to a middle frame (11). The pair of front sliders is fixed to a front frame (12) to be able to slide about the middle frame. The pair of rear sliders is fixed to a rear frame to be able to slide about the middle frame. The front slider or the rear slider moves along the movable screw with the operation of a motor based on the middle slider.