| 主权项 |
1. A pump that is fitted to bosses protruding from a fitting target portion, the pump comprising:
a housing in which a pump chamber that is a columnar space is defined, and a suction-side groove and a discharge-side groove are formed at a predetermined interval in a circumferential direction of a bottom of the pump chamber so as to be recessed in the bottom of the pump chamber; an outer rotor that is rotatably provided in the pump chamber and includes internal teeth formed at an inner peripheral side of the outer rotor; and an inner rotor that is provided inside the internal teeth, the inner rotor including external teeth that mesh with the internal teeth and are formed at an outer peripheral side of the inner rotor, wherein fitting portions that are fitted to the bosses are formed on an outer surface of the housing, wherein a protruding portion, which overlaps with the bosses in a thickness direction, is formed so as to protrude from a surface of the housing on which the fitting portions are formed, and wherein a relief valve is provided in the protruding portion, and the relief valve discharges fluid from the discharge-side groove when pressure in the discharge-side groove is equal to or higher than predetermined pressure. |
