| 摘要 |
The present invention provides a motion base having a lower link provided in the form of double arms and coupled to both ends of a transmission shaft, so that the lower link is configured to be rotatable, thereby stably transmitting the rotational force of the lower link to a two-joint link so that a 3-D motion operation can be more stably performed. In addition, the present invention provides a motion base having a two-joint link positioned in an inner part in which three transmissions provided at preset positions are coupled to each other for the operation of the two-joint link, thereby preventing a link part from protruding outward, so that the whole size of the motion base can be minimized. In addition, the motion base can be easily manufactured for the use thereof by simplifying the structure of the motion base. In order to accomplish the above object, according to the motion base of the present invention, an operating plate mounted on a base plate through a link structure can be irregularly moved up and down, so that the 3-D motion of the operating plate is possible. The motion base includes three two-joint links, each two-joint link including an upper link having an upper portion coupled to the operating plate by a ball joint and a lower link rotatably installed at a lower portion of the upper link; and a transmission to rotate each lower link so that the lower link is irregularly rotated by driving force of a driving unit within a preset angle range. The lower link is provided in the form of double arms parallel to each other, and the double arms are coupled to both ends of the transmission shaft of the transmission, so that the double arms operate together with the transmission shaft. |
