| 摘要 |
PURPOSE: Top ring carrier structure of a piston is provided to distribute stress of the top ring carrier at combustion by protruding a rib upward on the carrier, and to prevent crack of a piston by enlarging the contact area between the top ring carrier and the piston. CONSTITUTION: A top ring carrier is composed of a ring shaped body(4) recessed in the upper part of a piston(1) to form an oil moving passage(5) and a staple shaped ring combination part(6) formed outside the body. The top ring carrier and a top ring(7) are combined with the upper part of the piston. A rib(10) is protruded upward on the top ring carrier to improve assembling force with the piston, and the upward angle of the rib is equal to direction of stress applied to the body in moving down the piston. Stress is distributed by forming the upward protruded rib on the top ring carrier, and crack is prevented by increasing the contact area between the top ring carrier and the piston.
|
