| 摘要 |
<P>PROBLEM TO BE SOLVED: To complete adequate sealability between a stem rubber and a stem in a stationary mode by further restoring a stem elastic piece part in its original state in a final stage when the stem is moved from the ejection mode to the stationary mode based on the restoring action of its own resilient piece part. <P>SOLUTION: When a user stops the ejecting operation, the stem 1 is subjected to the upward force indicated in the figure based on the abutting/restoring action of a long resilient piece part 14 formed on a lower portion of the stem and a lower tapered face 21 of a housing 2, and automatically restored to the stationary mode. In the final phase of the restoring action, as a short resilient piece part 15 (a ridge-shaped projecting part 15a) of the stem 1 is restored to its original state while being guided by an upper tapered face 22, the stem 1 is also subjected to the upward force from the tapered face, further moved to the stationary mode position, and tightly fitted to a stem rubber 6. In another stem structure no short resilient piece part 15 is provided, but a ridge-shaped projecting part 15a is formed in an intermediate portion in the vertical direction of the long resilient piece part 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
