| 摘要 |
<p>PURPOSE:To enhance external values of commodities by a method wherein, in a blinding device with four-joint link, a gap which is formed between links so as to be expanded and contracted can be closed without disturbing the action of the links, thereby avoiding dangers such that fingers are clamped between the links. CONSTITUTION:A fixed link 1 and a movable link 2 are interconnected by two links 3, 4 to form a four-joint link. A link cover 9 which has a width larger than the interval L' of a gap between the links 3 and 4 during the operation of the four-joint link and which has a length nearly equal to the link 3 is provided in such a manner that one end 9a of the cover 9 is fixed and is rotatably mounted to either of the links 1, 2, while the other end 9b thereof is longitudinally slidably mounted to the link to which the end 9a is not mounted, so that the cover 9 is disposed along the side of the links 3, 4 so as to straddle the links.</p> |
