The utility model provides a pair of one -way oil blanket structure of riveting tightly, it includes: the guiding hole of stairstepping is seted up to the director in, the distal end aperture of guiding hole is greater than the near -end aperture, the director bush of setting in the guiding hole, director bush are located near -end one side of guiding hole, the direction stopper of setting in theguiding hole, direction stopper are located distal end one side of guiding hole, have seted up a plurality of rivet holes on the direction stopper, are equipped with the rivet in the rivet hole, the oil blanket subassembly of setting in the guiding hole, oil blanket subassembly are located distal end one side of guiding hole, and the sealed pad outside the director near -end is established to thecover. The utility model discloses an one -way oil blanket structure of riveting tightly through setting up a direction stopper and seted up a plurality of rivet holes on the direction stopper, can pass through fix with rivet with the oil blanket subassembly and in the guiding hole, consequently can install with making things convenient for.