| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressure plate ensuring a desired rigidity as a pressure plate as well as reduced volume and weight.SOLUTION: A pressure plate 100 according to this invention comprises a base plate 200, a top board 400, a rib part 300, and an anchor insertion part AI. Anchor insertion holes are drilled on the base plate 200 and the top board 400. The rib part 300 connects the base plate 200 and the top board 400, and comprises at least a first rib pair and a second rib pair. The first rib pair is parallel in one direction and the second rib pair is parallel in another direction. The first rib pair and the second rib pair are placed to intersect each other. The anchor insertion part AI communicates the anchor insertion hole of the base plate 200, the anchor insertion hole of the top board 400, and the inside of an intersection of the rib part 300. The top board 400 is smaller than the base plate 200 and larger than a periphery of the intersection of the first rib pair and the second rib pair in plan view.</p> |
