| 摘要 |
A pump assembly with a pressable head includes a push tube, an inner tube, a stop valve, and an outer tube; a top of the push tube passing through the outer tube; the push tube communicates with the inner tube; a bottom of the inner tube is formed with an annular plug; the annular plug of the inner tube has a plurality of via holes defined therein. The via holes have inclined inner walls. A top of the inner tube has a stop valve; the stop valve is a flat structure; an elastic structure is formed on a periphery of the stop valve; by elastic deformation of the elastic structure, the stop valve tightly adheres to an inner wall of the outer tube; an interior of the outer tube has a stepped structure with a greater diameter at an upper side and a smaller diameter at a lower side.
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