| 摘要 |
PROBLEM TO BE SOLVED: To provide a foam discharging type pump dispenser which has less wear while having no sliding sections, and also, is structurally simple as well. SOLUTION: This foam discharging type pump dispenser 1 mixes a liquid L in a container 2 and air A on the outside of the container. The foam discharging type pump dispenser 1 has a liquid pumping means for discharging the liquid L to the outside by sucking it up through an introduction flow passage S1 and also, through a discharging flow passage S3, and an air pumping means for taking in the air A and feeding it into the discharging flow passage S3. In this case, the liquid pumping means has a liquid pumping section 3, a first check valve 4 which is provided on the border between the introduction flow passage S1 and a pump space S21, and a second check valve 5 which is provided on the border between the pump space 21 and the discharging flow passage S3. Also, the air pumping means has an air pumping section 6, and a third check valve 7 which is provided on a suction port for the air A. Then, a fourth check valve 15 is provided so that the mixed fluid of the liquid L and the air A may not enter a pump space S22 from the discharging flow passage S3. COPYRIGHT: (C)2007,JPO&INPIT
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