| 摘要 |
A plastic barricade is rigidized with limiting bolt and hinge so that it can be open to a fixed freestanding position of, for example, 40 DEG . Downward or collision forces with the barricade are compensated by providing compression molded end walls in the recesses in which the limiting bolt is placed. In addition, the hinge which includes a cylindrical male boss and a C-shaped female socket accommodates such forces by reason that the C-socket is also compression molded and includes additional strut means connected to its associated leg on the barricade frame unit for distributing any forces on the C-socket.
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