| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear pump capable of achieving improved sealing ability with a reduced number of parts. SOLUTION: The gear pump comprises a pump assembly and casings for storing the pump assembly and forming a second oil chamber. The pump assembly has a drive side gear supported by a drive shaft, a driven side gear supported by a driven shaft, a pair of side plates arranged on both sides in the axial direction of the drive shaft and driven shaft, and a seal block for sealing tooth tops of the gears and forming a first oil chamber by coming into contact with the side plates. The casings receive the pump assembly and forms the second oil chamber. Ribs are provided on at least either of the side plates or the seal block and form oiltightness of the first oil chamber and second oil chamber by pressing them to each other for plastic deformation. COPYRIGHT: (C)2006,JPO&NCIPI
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