Foley & Lardner LLP
Lower link for piston crank mechanism of internal combustion engine
A lower link for a piston crank mechanism of an internal combustion engine includes an upper section, a lower section, and a crank pin bearing section disposed between the upper section and the lower section, and mounted on a crank pin of a crank shaft. One of the upper section and the lower section is formed with a bolt inserting hole. The other of the upper section and the lower section is formed with an internal thread portion including an open end. One of the bolts passes through the bolt inserting hole, is screwed into the internal thread portion, and includes an end bared from the open end which is formed in a surface perpendicular to a bolt center axis. The other of the upper section and the lower section includes a recessed portion formed in the surface to divert a stress transmitting path.
Nissan Motor Co., Ltd.
F F
F02B F02B
inventional inventional
Kenshi Shunichi Katsuya Hideaki
Ushijima Aoyama Moteki Mizuno