Title:
CONNECTING ROD OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2019132343
Kind Code:
A
Abstract:
To reduce the weight of a connecting rod while suppressing the lowering of rigidity.SOLUTION: A connecting rod 1 comprises: a large end part 2, a small end part 3 and an intermediate part 4, and the intermediate part 4 is formed into an H-shape at a cross section having a plate-shaped part 9. A penetration hole 13 for weight reduction is formed in a region near the large end part 2 out of the plate-shaped part 9. An internal peripheral face of the penetration hole 13 is curved as a whole without presence of a linear part like a semi-circular shape, and formed into a symmetric shape across a thick intermediate position 15. Even if a load such as compression, tension and bending is applied to the plate-shaped part 9, stress is not concentrated at a specified region, nor generated unevenly on between a front surface side and a back surface side, and therefore, the connecting rod 1 can be reduced in weight while largely suppressing the lowering of rigidity resulting from the penetration hole 13.SELECTED DRAWING: Figure 1
Inventors:
HAYASHI YUSEI
Application Number:
JP2018014998A
Publication Date:
August 08, 2019
Filing Date:
January 31, 2018
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
F16C7/02
Attorney, Agent or Firm:
Hiroyuki Nishi
Ryuichi Watanabe
Ryuichi Watanabe