The drive shaft of the automobile water pump

摘要

(57) [summary] [purpose] to the continuous part of a large diameter portion 2 and the small diameter portion 7, it is possible to prevent the stress is concentrated by the bending load, and less likely to break. [Construction] and the large-diameter portion 2 and the small diameter portion 7, cross-section is continuous with the curved portion 14 of the arc-shaped. The small diameter portion 7 is allowed to continuously in the tangential direction of the circular arc portion 14, prevents the concentration of stress to the continuous section.