Patent ID: 7114928
Filing Date: 2006-10-03
Classification: F02M,F04B

Abstract:
1. A high pressure pump comprising: a plunger; an intermediate member including a cylinder body for pressurizing fluid in a pressurizing chamber by reciprocating the plunger, wherein the cylinder body has a cylinder accommodating the plunger and the pressurizing chamber communicated with the cylinder; a first clamping member and a second clamping member arranged on two ends of the intermediate member, both the first clamping member and the second clamping member receiving a bending force; a valve mounted on the first clamping member, the valve selectively opening and closing the pressurizing chamber; a clamping bolt extending between the two clamping members to clamp the intermediate member with the two clamping members, a portion of the first clamping member clamped by the clamping bolt protruding laterally from a solid body of the first clamping member and having a lower rigidity than that of the solid body of the first clamping member, and a portion of the second clamping member clamped by the clamping bolt being a flange-shaped peripheral portion; and a coupling structure for coupling the high pressure pump to a supporting member with the second clamping member and a fastening bolt, wherein the supporting member is a cover accommodating a cam therein, wherein the cam drives the plunger; the second clamping member having a contact surface that contacts the cover; the fastening bolt applying a force in a direction so that the second clamping member moves closer to the cover from a side opposite to the contact surface of the second clamping member; and the fastening bolt being screwed in a screwing hole formed in the cover, wherein the screwing hole penetrates only partially, and not all the way through the cover.