BICYCLE HUB SEALING STRUCTURES

摘要

A bicycle hub sealing structure comprises: axle shaft, nuts, hub enclosure, a sleeve and a ratchet wheel, wherein, the hub enclosure rear end and the sleeve front end are attached to the axle shaft respectively through the first ball bearing and the second ball bearing, meanwhile the second ball bearing is combined with the sleeve through the balls, the nuts are positioned on the front and rear ends of the axle shaft, the rear end of the ratchet wheel is located inside the hub enclosure, and is combined with the sleeve through the balls, the front end of the hub enclosure has a housing cavity, the rear end of the sleeve is extended into the bulge loop inside the housing cavity, a sleeve oil seal is provided between the bulge loop outside wall and the housing cavity inside wall, and a leakage-proof gasket is provided between the bulge loop inside wall and the ratchet wheel.

主权项

1. A bicycle hub sealing structure, comprising an axle shaft, a hub enclosure, a sleeve, and a ratchet wheel, wherein, the front and rear ends of the axle shaft are respectively connected to the rear end of the hub enclosure and the front end of the sleeve through a first ball bearing and a second ball bearing, and are locked on the front end and rear end of the axle shaft through a nut, meanwhile, the second ball bearing is combined with the sleeve through the balls, the rear end of the ratchet wheel is located inside the hub enclosure, and is combined with the sleeve through the balls; main characteristics: the front end of the hub enclosure has a housing cavity, the rear end of the sleeve is formed with a bulge loop extending into the housing cavity; between the outside wall of the bulge loop and the inside wall of the housing cavity, a sleeve oil seal is provided, and between the inside wall of the bulge loop and the ratchet wheel, a leakage-proof gasket is provided.