| 摘要 |
Provided is an automotive engine phase-adjusting device including a self-lock mechanism that does not inhibit an operation of modifying the relative phase angle of a cam shaft with respect to a drive rotating body. The automotive engine phase-adjusting device includes: a drive rotating body having a cylinder portion and driven by a crank shaft; a cam shaft supporting the drive rotating body coaxially and relatively rotatably; a mechanism for modifying the relative phase angle; and a self-lock mechanism for preventing the shifting of the relative phase angle due to cam torque by pressing a lock plate held by a holder portion integral with the cam shaft onto an inner peripheral surface of the cylinder portion. The automotive engine phase-adjusting device is provided with plate pressing surfaces disposed at a plurality of substantially equally divided locations along the circumference on the outer periphery of the holder portion, and a plurality of equally divided lock plates corresponding to the plate pressing surfaces. The plate pressing surfaces are formed by first and second pressing surfaces that respectively transmit the cam torque in advancing and retarding directions to the lock plates. |
