GEAR PUMP OR GEAR MOTOR |
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| 申请号 | EP15846157 | 申请日 | 2015-09-29 | 公开(公告)号 | EP3203083A4 | 公开(公告)日 | 2018-03-28 |
| 申请人 | DAIKIN IND LTD; | 发明人 | TSUZUKI KATSUNARI; | ||||
| 摘要 | Friction between end portions of drive and idler shafts and pistons lead to reduction in mechanical efficiency and/or wearing out of parts. A gear pump 1 of the present invention includes: a casing 6; a drive gear 2 and a driven gear 3 each configured as a helical gear, the drive gear 2 and the driven gear 3 meshing with each other in the casing 6 and partitioning the inside of the casing 6 so as to include a high-pressure space and a low-pressure space; and a drive-side space 16 and an idler-side space 116 each configured to allow pressure therein to become higher than a pressure in the low-pressure space, the drive-side space 16 facing an end portion of a drive shaft 4 rotatably supporting the drive gear 2, the idler-side space 116 facing an end portion of an idler shaft 5 rotatably supporting the driven gear 3. The end portion of the drive shaft 4b is pushed in a predetermined direction by working fluid supplied to the drive-side space 16, and the end portion of the idler shaft 5b is pushed in the predetermined direction by working fluid supplied to the idler-side space 116. | ||||||
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| 说明书全文 | |||||||
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