Patent ID: 9644627
Date: 2017-05-09
CPC Classifications: F04C

Claim:
1. A gear pump, comprising: a pair of gears that mesh with each other; two shafts that are rotationally supported, inserted into the pair of respective gears, and rotate together with the pair of gears; a pair of side plates arranged adjacent to both side surfaces of the pair of gears, each of the side plates having two through-holes forming bearings of the two shafts; a seal block that abuts against the pair of side plates, and covers a part of the pair of gears in a circumferential direction, the pair of gears, the two shafts, the pair of side plates, and the seal block together forming a pump assembly; and a case having a recess in which the pump assembly is accommodated, and having a facing surface that faces the seal block on an inner wall of the case forming the recess, wherein the pump assembly has a line passing through an arc center of a cylindrical surface, which is inscribed in the facing surface of the case and is parallel to the two shafts, as a rotating axis, the pump assembly is held to be rotatable about the rotating axis, and, when the pump assembly rotates about the rotating axis, a portion of one of the pair of side plates located across one of the shafts from the rotating axis in a direction connecting the two shafts comes in contact with a projecting portion of the inner wall of the case.