| 摘要 |
<p>A dust suction device comprises: a housing having a plurality of inlet holes on the upper part thereof; a driving unit including a body, a head connected to the upper side of the body, and a support member formed along the circumference of the body; and an elastic unit for upwardly pressing and elastically supporting the driving unit, wherein, by the upward pressing of the elastic unit, the body is arranged in a state where at least a part thereof is inserted into the inside of each of the inlet holes within the housing, the head is arranged in a state where at least a part thereof protrudes from the inlet holes, the support member is arranged in a state where the inlet holes are closed thereby, and the inlet holes can be opened when the support member downwardly moves by the pressure applied to the head from the upper side of the housing.</p> |
