| 摘要 |
<p>A sealing oil ring is provided, particularly relates to an oil ring in a piston ring for internal combustion engine or air compressor, it includes a basic ring(2) with an opening(13), the outer peripheral surface of the basic ring(2) is provided with the annular flange projecting radially outwards, the upper perforated radial groove(4) is provided in the upper surface at the two ends of the opening(13) of the basic ring(2), the perforated axial groove(5) is provided on the inner peripheral surface at the two ends of the opening(13) of the basic ring(2), an arched block(6) is provided in the perforated axial groove(5), an upper arched scraping oil ring(8) is provided on the upper perforated radial groove(4), a spring expansion ring(9) is provided on the inner peripheral surface of the basic ring(2) and the inner peripheral surface of the arched block(6), therefore the leakage of the oil out of the ring opening is avoided.</p> |
