| 摘要 |
PURPOSE:To surely prevent a filter, which is fixed to a return port for the working oil from coming off the return port by installing a coming-off- preventing-clamp, which abuts on a presser bar and prevents the filter from coming off the return port, on a periphery of the filter. CONSTITUTION:In a hydraulic pump 4, a suction port 42 is formed on one side of a main body 41 of the pump 4, and a filter 7, which covers the surrounding surface of this port, is fixed by a plurality of presser bars 8. In this case, elastic bodies 13 are inserted into a plurality of grooves 12, which are engraved on the surrounding surface of the main body 41 in such a manner that each groove faces each presser bar 8, so that each presser bar 8 is press-fitted to the filter 7. In addition, both ends of the filter 7 are folded back to the inside, and a coming-off-preventing-clamp 14 consisting of a steel wire having a cross section of a circle is inserted into the folded-back part. Each coming-off- preventing-clamp 14 abuts on each neighboring presser bar 8, thereby preventing the filter 7 from coming off the suction port 42. |
