| 摘要 |
PURPOSE:To improve the reliability of a connecting rod in terms of strength as well as to aim at the promotion of its lightweightiness, by coupling a big end and a cap part of the connecting rod after being clamped tight with a U- shaped metal device. CONSTITUTION:A big end 4 is installed in one end of a connecting rod 1, while a cap 5 is connected it together with this big end 4 via both of a crankshaft 6 and a metal 7, and outer surfaces of both flange parts 9 and 10 of the big end 4 and the cap 5 are provided with each of thick sloping surfaces 13 and 14 at the end part side. The tip of a machine bolt 16 being set in a tapped hole bored in and around the cap side of a U-shaped clamping metal device 15 which nippingly holds these flange parts 9 and 10 fitted in these sloping surfaces 13 and 14 is pushed against the sloping surface 14 of the cap 5 via a keep piece 18. With this, a contact area between these flange parts 9 and 10 and the camping metal device 15 can be made to be yet wider owing to the formation of these sloping surfaces 13 and 14, so that compression stress and creep both can be made smaller. |
