| 摘要 |
PURPOSE: To obtain a dispenser equipped with an interchangeable reservoir by providing the reservoir with a frustoconical surface that comes to be pressed against a corresponding frustoconical surface of a nut or a support or both of them when integrally joining the reservoir to the support and tightening each sector of the nut around a threaded rod. CONSTITUTION: When a support 7 is further pushed forward in the cylindrical portion 1b so as to fit this, thread of a rod 5 pushes to widen two half-nuts separated by a slit 10 because these two half-nuts are not mutually restricted. The rod 5 slides in a nut 9 accompanied by friction until the nut 9 returns to the position where the refraction completely finishes within the support 7. And a plunger 4 pushes a flat portion 12 of the nut 9. It pushes the frustoconical surface 1c when reaching this position, and makes the two half-nuts no longer being capable of spreading apart by locking them. In this manner, the screw of the hole 11 engages again with the screw of the rod 5, which is thus driven so as to perform translation with respect to the reservoir l when the rod 5 starts rotating with mechanism integrated in the support 7, so that the product 3 can be dispensed. |
