| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump device etc. which secure electric connection with a sacrifice anode with a simple structure to make electric field corrosion less likely to occur.SOLUTION: A pump device of the invention includes: a housing 181 in which an oil flow passage is formed; a cylinder 51 which is provided so as to contact with the housing 181; and a sacrifice anode which is connected to one of the housing 181 and the cylinder 51 and inhibits corrosion of the housing 181 and the cylinder 51. Further, at least one of the housing 181 and the cylinder 51 has a processed part 181s which interrupts electric connection between the housing 181 and the cylinder 51. The pump device includes a relief valve 300 which is provided in a relief passage 123, controls flow of an oil flowing in the relief passage 123, and electrically connects the housing 181 with the cylinder 51.SELECTED DRAWING: Figure 5 |
