To provide a fixing structure for a low-pressure-side port pipe in a high-pressure pump that reduces cost, enhances reliability of a pipe press-in part in a low-pressure line, including an inlet port 18, a tank port 19 and a safety valve return port 20, that leads to a low-pressure part and hardly causes the port pipe 41 to come out of a pipe mounting hole 30 of a pump housing 21.
Attention is given to formation of a press-in projection 42 and a press-in recess 43 that allow a port pipe 41 to engage in a pipe mounting hole 30. The pump housing 21 is formed with the press-in recess 43 at the pipe mounting hole 30, and the port pipe 41 is formed with the press-in projection 42 which can engage in the press-in recess 43. The port pipe 41 is fixed into the pipe mounting hole 30 by engagement of these press-in projection 42 and press-in recess 43.
HOZUMI ETSURO
YAMAZAKI AKINORI
KASAHARA KAZUMASA
