| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the durability of joint parts at a junction thereof by improving the pressure resistant strength to the pressure fluctuation in an intake manifold having a surge tank and a plurality of intake tubes connected to the surge tank and formed by joining a plurality of joining parts made of a synthetic resin. SOLUTION: A joint part 24 forming a part of a surge tank 20 is formed with a bend part 42 bent inward of the surge tank 20, and the outer surface of the bend part 42 is provided with a rib 36 continuously to a junction 34 of the joint part 24 having the bent part 42 and other joint part 23.</p> |
