Gear pump |
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| 申请号 | JP11096887 | 申请日 | 1987-05-07 | 公开(公告)号 | JPS63277877A | 公开(公告)日 | 1988-11-15 |
| 申请人 | Kayaba Ind Co Ltd; | 发明人 | TERUYAMA HIDEO; | ||||
| 摘要 | PURPOSE: To enhance durability of a bearing, by forming lubricating return- recessed grooves in the internal periphery of bush-press fit holes in the side of gear shafts, being opposed, to be opened in one end to a gear hole side and a pair of leg grooves laterally opening their leg while both the recessed grooves and the leg grooves to communicate. CONSTITUTION: Lubricating return-recessed grooves 43, 44 are formed in bush- press fit holes 3, 4 of a body. The recessed groove 43, 44 are formed between opposed parts of both the press fit holes 3, 4 and on a line connecting the axial centers of gear shafts 13, 16. A pair of leg grooves 45, 46 and 47, 48, which laterally open their legs bordering on the line connecting the axial centers of the gear shafts, communicate respectively with the recessed grooves 43, 44. Accordingly, durability of a bearing improves by preventing an oil film in a roll bush from generating a high pressure even if both gears are rotated in a direction to either right or left. COPYRIGHT: (C)1988,JPO&Japio |
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| 说明书全文 | |||||||
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