Oil scraper ring spring for an oil scraper ring and oil scraper ring

摘要

The present invention relates to an oil scraper ring spring (4) for an oil scraper ring (2), which is provided for mounting in an oil ring groove of a piston, and the oil scraper ring spring (4), upper and lower metal rings (6, 8). wherein the oil scraper ring spring (4) comprises a plurality of upper portions (10) and a plurality of lower portions (12) alternately arranged in a circumferential direction so as to be spaced in an axial direction; Connecting portions (14) interconnecting each of the adjacent upper and lower portions (10, 12); each of the upper and lower portions (10, 12) each having a nose portion (16) disposed at the inner peripheral end and adapted to radially outwardly press the respective adjacent upper or lower metal ring (6, 8), and a support portion (20, 22) extending radially between the nose portion (16) and the outer peripheral end and adapted to rest on or abut the respective upper or lower metal ring (6, 8); and wherein an anti-rotation projection (36, 38) is provided on an upper and / or on a lower support section (20, 22) which extends upwards out of the plane of the upper support section (20) or downwards out of the plane of the lower support section (20). 22) and having a height (H) less than the distance of the upper end of the nose portion (16) from the plane of the upper rest portion (20) and less than the distance of the lower end of the nose portion (16) from the plane of the lower support portion (22) is equal to or less than the thickness (D) of the metal ring (6, 8) to be laid on the upper support portion (20) and the lower support portion (22) to be applied.