| 摘要 |
A brush for wiping out dust is formed of a hollow main body and a slide seat having a seat body and bristles attached to the front end of the seat body. The main body is provided in the wall thereof with a through slot extending the longitudinal direction of the main body. The through slot is provided at the front end thereof with a receiving slot. The seat body is provided at the rear end thereof with a protrusion which is retained in the receiving slot of the through slot of the main body at the time when the slide seat is detachably fastened with the main body. The slide seat is entirely drawn into the hollow main body when the protrusion of the seat body of the slide seat is moved along the through slot to arrive at the rear end of the through slot.
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