| 摘要 |
A sucking device includes a tubular body and an engaging member. The tubular body includes a through hole and an air distributing portion received in the through hole and engaged with an inner surface of a sidewall of the tubular body. The air distributing portion is arranged adjacent to a distal end of the tubular body, and includes a central air passage and a number of peripheral air passages surrounding the central air passage. The engaging member includes a bottom plate received in the through hole at the distal end and an engaging portion extending from the bottom plate and being insertably engaged in the central air passage. A gap is maintained between a circumferential outer surface of the bottom plate and the inner surface of the tubular sidewall, and the gap is in communication with the through hole through the peripheral air passages.
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