| 摘要 |
A drum brush having a drum rotation body, a pair of bearing holders, a pair of bearings, a shaft, a pair of end-caps and pressing rings, includes bristle tufts, and the pair of bearing holders are provided to be connected to or integrally formed with both ends of the drum rotation body. A pair of bearings, each having an inner race and an outer race, are connected to each of the bearing holders. The shaft penetrates each of the inner races of the bearings and is connected to the end-cap at either end. The pressing ring is interposed between each bearing holder and each bearing to prevent rotation of the outer race. Accordingly, when the drum rotation body rotates, the bearing holder is not damaged by frictional contact with the bearing. |
