| 摘要 |
A bearing assembly for the brush unit of a vacuum cleaner comprises, a pair of bearing holders 220, a pair of bearings 230, a shaft 240, a pair of end-caps 250 and a pair of pressing rings 260. Each bearing holder 220 is connected to, or integrally formed with, a respective end of the brush body 210. The bearings 230 have an inner race 231 and an outer race 232. The shaft 240 penetrates each of the inner races 231 of the bearings 230, and is connected to the end-caps 250. Each pressing ring 260 is interposed between its bearing holder 220 and its bearing 230 to prevent rotation of the outer race 231 of that bearing. Accordingly, when the brush body 210 rotates, the bearing holders 220 are not damaged by frictional contact with the bearings 230. The pressing ring 260 preferably includes a radially inwardly extending protrusion (262, fig 5) and at least one fixing protrusion (263, fig 5) which extends radially outwardly, thus contacting the bearing holder 220. |
