To provide a bearing for a crank shaft of an internal combustion engine for effectively preventing deformation, breakage of an engagement part of a semicircular thrust bearing and a semi-cylindrical slide bearing integrally combined with each other by engagement relation between pawls and notches.
Two pawls 34 extending inward in a radial direction are projected by being separated from each other in the circumferential direction at an inner peripheral side of a semicircular thrust bearing 30. The pawls have: first sides 34b on the farther side and second circular-arc-shaped sides 34c on the nearer side from both ends in the circumferential direction of the semicircular thrust bearing 30. Circular-arc-shaped cutout parts 32b are formed at an inner peripheral side on both ends in the circumferential direction of the semicircular thrust bearing 30, and circular arcs of the circular-arc-shaped cutout parts also form the second circular-arc-shaped sides of the pawls. When the inner diameter center of the semi-cylindrical slide bearing 20 and the inner diameter center of the semicircular thrust bearing 30 are at the same position, the second circular-arc-shaped sides 34c of the pawls 34 become dimensions so as not to contact the outer peripheral surface of the semi-cylindrical slide bearing 20.
MIZUNO TAKAHIKO
Hideto Asamura
Hajime Asamura
Hiroyuki Hashimoto
Katsunori Shirae