Patent ID: 9316193
Filing Date: 2016-04-19
CPC Classification: F01L,F02M

Claim Text:
1. A high-pressure pump to be installed in an internal-combustion engine having a cam shaft, comprising: a rocker arm which is mounted on a cam provided on the cam shaft of the internal-combustion engine, and which rocks in association with a rotation of the cam; a pivot which protrudes downward, and a lower end part of which supports the rocker arm in a rockable manner; a plunger which reciprocates in a top-bottom direction in association with a movement of the rocker arm; and a mounting member which is fixed at a predetermined position, wherein the rocker arm comprises: wherein the mounting member comprises: wherein before the plunger is brought into contact with the first end, the supporting part comes in contact with the arm body so as to resist a turn of the rocker arm around the roller under the weight of the rocker arm and keeps such an orientation of the rocker arm that the lower end part of the pivot is positioned within the concave part of the second end and that the outer circumferential surface of the lower end part of the pivot is apart from the inner circumferential surface of the concave part, wherein after the plunger is brought into contact with the first end, the supporting part comes out of contact with the arm body when the rocker arm turns reversely to the turn under the weight of the rocker arm, wherein the pair of anti-turning parts protrudes from the supporting part so that the arm body is sandwiched axially of the roller between the pair of anti-turning parts when the arm body comes in contact with the supporting part, and wherein the pair of anti-turning parts is formed to gradually increase in distance therebetween in a direction in which the pair of anti-turning parts protrudes.