Patent ID: 6422570
Filing Date: 2002-07-23
Classification: F16J

Abstract:
A lip sealing structure comprising:a housing (1) having a seal attaching portion (12); a rotary shaft (2) having an outer surface, the rotary shaft (2) being rotatably provided relative to the housing (1); a lip type seal positioned between the seal attaching portion (12) and the rotary shaft (2) for sealing the rotary shaft (2) so as to define a sealed space (A); the lip type seal including: a seal main body (32) having a rear side and an inner peripheral portion which is bent into the sealed space (A) and contacts the outer surface of the rotary shaft (2) in a sealing condition; a rear surface support plate (33) placed at the rear side of the seal main body (32) and fixed relative to the seal main body (32); a movable support plate (34) placed between the seal main body (32) and the rear surface support plate (33), the movable support plate (34) being movable in a radial direction.