| 摘要 |
<p>A suction cup dust extractor for a drill comprising: a housing (10); a drill collar (12) attached to the housing (10), having a drill passage (18) formed through it; a recess (38) formed by the walls (50, 52) of the housing (10) having a planar opening (80); a seal (84, 86) attached to the walls (50, 52) of the recess (38) and which surrounds the planar opening (80) and which, in use, locates against a work piece to create an air tight seal between the housing and the work piece; an aperture (24) located on the housing (10) through which air can pass; at least one first air passage (32) formed within the housing (10) which enables air to pass from the drill passage (18) to the aperture (24); and at least one second air passage (36) formed within the housing (10) which enables air to pass from the recess (38) to the aperture (24); characterized in that the seal comprises a base (84) which is attached to the walls (50, 52) of the recess (38) and a flange (86) which is attached to and extends from the base (84) at an oblique angle (88) to the plane (82) of the opening (80).</p> |
