| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a reliable fixed-quantity injection button with a simple structure, and to allow easy change in the capacity of a fixed-quantity chamber. <P>SOLUTION: The fixed-quantity injection button of an aerosol container comprises a stem connection part 21 and an operation part 22. A conduit 21t is formed in the stem connection part 21, an inlet of the conduit 21t communicates with a valve stem S, and an outlet thereof communicates with an inner space 22n of the operation part 22. The fixed-quantity chamber is formed between the conduit 21t of the stem connection part 21 and an injection port 29 of the operation part 22. A leading end 21s of the stem connection part 21 is disposed inside the operation part 22. A sealing means is provided on a joint face of a leading end side outer wall face of the stem connection part 21 with an inner wall face of the operation part 22. The sealing means comprises a small-diameter part 24 at the leading end of the stem connection part 21, a lower large-diameter part 25 continued thereto, and a ring-like valve 23 engaged therewith and provided on the inner wall face of the operation part 22. Sealing is performed when the ring-like valve 23 is engaged with the large diameter part 25, and the sealing is released when the ring-like valve 23 conforms to the small diameter part 24. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
