| 摘要 |
<p>The present invention relates to a vehicle vacuum pump for reducing operation noise, which can reduce operation noise by partly releasing pressure in a section where pressure sharply changes during operation. The vehicle vacuum pump for reducing operation noise comprises: a rotor (14) which rotates at an eccentric position in a space (S) formed by a housing (12) inside a pump body (11); and a vane (15) which is installed in the rotor (14) in order to eccentrically rotate inside the space (S). In addition, an oil discharge (16) penetrating the pump body (11) is formed at a fixed height or higher from the bottom of the space (S) in order to prevent the lubrication oil from flowing again into the space (S) due to the weight of the lubrication oil when the lubrication oil flowing into the space (S) is discharged by the vane (15) while being pressurized.</p> |
