| 摘要 |
A connector for juxtaposed elements which are provided with laterally elongated holes therethrough, has a shaft which has a laterally elongated head portion at one end. A rotation blocking member has a washer portion through which the shaft passes, and a blocking portion extending from the washer portion. A reaction member preferably a threaded nut engages the end of the shaft opposite the head portion. In use, in an assembled position for insertion through the holes of the juxtaposed elements, the head portion is disposed in register with the blocking portion on the forward end thereof. Preferably, a spring between the nut and the washer portion tends to retract the shaft relative to the washer portion so that the head portion is lodged in compression on the end of the blocking portion. The shaft is rotated to move the head portion out of register with the blocking portion and to engage a side surface of the blocking portion which itself is non-rotatable within the slot. The shaft is retracted, preferably with the assistance of the spring, and by rotation of the nut, to clamp the elements tightly together between the nut and the head portion.
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