Valve unit fixing structure and fluid pump using the same

A fluid pump including a pump main body having a compression chamber for drawing in a fluid, increasing the pressure of the fluid and then discharging the fluid, the pump main body being provided with a plurality of fluid valves, a high-pressure passage through which a fluid discharged from the compression chamber passes, and a discharge communication passage extending from the compression chamber to the high-pressure passage, and a valve unit fixing structure;

• wherein
• the valve unit fixing structure comprises,
• a main body,
• a main body flow passage which is provided in the main body and through which a fluid passes,
• a valve unit which is provided in the main body and which opens/closes the main body flow passage, and
• a deformed fixing part which is formed by plastically deforming the main body and which fixes the valve unit to the main body;
• the main body of the valve unit fixing structure constitutes the pump main body;
• the main body flow passage of the valve unit fixing structure constitutes the discharge passage;
• at least one of the fluid valves is a discharge valve provided in the discharge communication passage as a valve unit of the valve unit fixing structure;
• at least another one of the fluid valves is a relief valve provided between the high-pressure passage and a space having a lower pressure than the high-pressure passage;
• the discharge valve is fixed to the pump main body by the deformed fixing part of the valve unit fixing structure;
• the deformed fixing part is evenly disposed about the discharge valve at a plurality of places in the circumferential direction;
• and
• a non-deformed part, which is a part between the deformed fixing parts that are adjacent to each other in the pump main body, intersects, on the relief valve side than the discharge valve, with a valve placement direction plane which passes through the center of the discharge valve and the center of the relief valve and which is parallel to a direction in which the discharge communication passage extends.