| 摘要 |
PURPOSE:To easily form an arm structure and to promote the improvement of its durability, by forming an arm main unit, which arranges fibers in the lengthwise direction further forms both ends at a right angle with the lengthwise direction, by fiber reinforced plastic (FRP) while providing boss members to butt in both end faces and forming layers, impregnated with resin, in the periphery of both the boss members and the arm main unit in their lengthwise direction. CONSTITUTION:An arm main unit 10 is molded in a shape of almost squared pillar by fiber reinforced plastic (FRP) drawing fibers to be arranged in the lengthwise direction, forming both end parts 11, 11 into a face vertical with the lengthwise direction. While a boss 2 is formed by a squared pillar, having a side face 21 of the same shape to the end face 11 of the arm main unit 10, and a semi-circular part, and it provides a mounting hole 22 being surrounded by a shock absorbing member 24. And after the arm main unit 10 and the boss 2 are adhesively attached by an adhesive agent in their end faces 11, 21, a peripheral layer 3, arranging fibers in the lengthwise direction, is formed by filament winding forming method being fixed to upper and bottom surfaces of the arm main unit in its lengthwise direction. By this constitution, the improvement of durability can be promoted by easily performing forming and processing work. |
