| 摘要 |
<p>A content discharge mechanism for a pump-type container, in which the position of a content discharge opening does not move with discharge operation. In the mechanism, the structure is simplified, the flow of the content is smoother, and the start and completion of content discharge are made in more proper manner. The content discharge mechanism has an operation button (1); a sheath-like piston (2) moving in association with the operation button (1); a suction valve (annular receiving surface (3c) and spherical body (5)) operating with the movement of the sheath-like piston (2); an upstream channel (A) formed between the sheath-like piston (2) and the suction valve; a downstream channel (B) formed as a separate member (lateral nozzle (3e)) from the operation button (1), connecting the upstream channel (A) and a discharge opening (8b), and formed not to move; and a pressure accumulation-type discharge valve (annular edge (8a) and annular tapered surface (9a)) provided in the downstream channel (B). In a discharge completion mode, the downstream channel (B) is communicated through a hole (3f) with a space region (E) outside the channel, and this reduces content pressure acting on the discharge valve, setting the discharge valve in a closed state.</p> |
