| 摘要 |
Disclosed is a pressurizing member inserted into a cylinder of a reciprocating pump so as to pressurize fluid inside the cylinder while performing a reciprocating motion. The disclosed pressurizing member has grooves partially formed on the outer peripheral surface thereof. The grooves change the pressure of an oil film of a part having grooves, so as to relieve the tilt or vibration of the pressurizing member. The grooves can be formed so as to be positioned at both sides of a first direction along which the pressurizing member is tilted or vibrated during a reciprocating motion or at both sides of a second direction orthogonal to the first direction. The grooves can be formed so as to be positioned at either of both sides of the first direction or either of both sides of the second direction. |
