| 摘要 |
PURPOSE:To reduce power consumption by providing a pair of half lids and a X-arm mechanism connected to each of the half lids by a pivotal axis, in which a first arm and a second arm in the X-mechanism are provided in a pivotal manner. CONSTITUTION:A lid L consists of a pair of half lids La, Lb having the same size, in which the under surfaces of the half lids La, Lb are supported by X-arm mechanisms 2a, 2b respectively. The upper ends of first arms 4a, 4b of the mechanisms 2a, 2b are pivotally connected to respective half lids, while the upper ends of second arms 5a, 5b are engaged with the half lids so as to slide along the lids a certain distance. Further, the lower ends of the arms 5a, 5b are pivotally connected to the floor F, while the lower ends of arms 4a, 4b are slidably engaged with the floor F and a drive mechanism 6 also is provided. As a result, a lifting drive unit can be made smaller. |
