| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which, when adopting a metal casing for suppressing deformation and breakage of the casing, the weight of the whole pump increases greatly.SOLUTION: A pump includes a second casing 22A made of resin, and a reinforcement plate 24A arranged on an upper side of the second casing. The reinforcement plate has an inner contact part 243A and a non-contact part 244A. The inner contact part comes into direct/indirect contact with a top plate part 221A in the surroundings of a liquid feed part 222A. The non-contact part is located on the further outside in a radial direction than the inner side contact part. Also, the non-contact part faces an upper surface of the top plate part in an axial direction via a gap. That is, the reinforcement plate has the non-contact part which does not come into contact with the top plate part on the outside in the radial direction of the inner contact part which comes into contact with the top plate part. Therefore, the inner contact part of the reinforcement plate can be efficiently brought into contact with a portion where deformation and breakage of the second casing are likely to occur, so that the thickness in the axial direction of the reinforcement plate can be suppressed while obtaining an effect of reinforcing the second casing. |
