JPS57115930A - Method for manufacturing antenna - Google Patents

Abstract

PURPOSE: To fix the element to a boom, by piercing a hole through the hollow boom at a right angle to the axis of the boom and inserting the hollow element through the hole, and insert-pressing two metallic rods having an inclined face at the front end, respectively, into the hollow element from both ends of the rod, so that the metallic rods cause offset and the front end of the metallic rods to swell the hollow element outward.

CONSTITUTION: Numeral piercing holes 6 are installed through a boom 5 in the direction normal to the axis of the boom at intervals. Then, an element 7 is inserted through the hole 6 in such a way that the central part of the element 7 is supported by the boom 5. Thereafter, two metallic rods 13 having an inclined face 12 at the front end, respectively, are inserted into the element 7 from both ends, and the inclined faces 12 and 12 are contacted to each other at a location in the element 7 which corresponds to the center of the boom. When the metallic rods 13 and 13 are slightly advanced, the inclined faces 12 and 12 of the metallic rods 13 and 13 cause offset because they are pressed, and projected ends 14 and 14 of the metallic rods 13 and 13 move along the direction normal to the axis of the element and swell the parts of the element corresponding to the inner margin of the hole 6 of the boom 5 outward circumference, and thus, the element 7 is firmly staked to the hole 6. After the staking is made, the metallic rods 13 and 13 are taken out from the element 7.

COPYRIGHT: (C)1982,JPO&Japio