| 摘要 |
PROBLEM TO BE SOLVED: To obtain a temporary joint washer which has a function for preventing the come-off of a bolt from a bolt insertion hole by being tightly fit to the bolt when bolt-connecting portions facing a ground foundation between end parts of two corrugate metal plate members, and is easy in attachment work to the bolt.SOLUTION: A bolt 3 is inserted into a bolt insertion hole 1c of an end part 1f (crest p viewed from the curved inside) of one corrugate metal plate member 1 from the ground face side, and a resin-made temporary joint washer 5 is made to cover a screw part which is protruded upwardly, and pushed into a depth until it contacts with an upper face of the member. A bolt temporary joint hole 5a of the temporary joint washer is smaller than an outside diameter of the bolt 3, and larger than a diameter of a trough. The temporary joint washer is tightly fit to the bolt, and holds the bolt so as not to come off from the bolt insertion hole 1c. Since the temporary joint washer is formed of resin, an elasticity range is wide compared with a conventional steel-made temporary joint washer, rigidity is also suitable, and the washer can be pushed into the bolt by finger-pushing light force, however, the washer exhibits delicate holding force which avoids the come-off of the washer by force at a degree of the weight of the bolt.SELECTED DRAWING: Figure 7 |
