Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1996-06-17
1999-08-10
Donnelly, Jerome
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 87, A45D 4004
Patent
active
059348143
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a casing for accommodating a rod-like cosmetic such as a lip stick; in particular, it pertains to a dispenser casing for a rod like cosmetic, which can be manufactured with improved productivity.
BACKGROUND ART
Conventionally, container for a rod-like cosmetics such as a lip stick is provided therein with a helical dispensing mechanism whereby the rod-like cosmetic is dispensed by a turning operation. Such a helical dispensing mechanism is comprised of a retainer cylinder for retaining the rod-like cosmetic therein, a guide cylinder for inhibiting the turning motion of the retainer cylinder, a helical cylinder for causing a vertical movement of the retainer cylinder, as well as an outer case in the form of a combination of a plurality of cylindrical bodies, such as a sleeve, an outer cylinder, an intermediate cylinder, a cap, etc. Thus, Japanese Utility Model Application Laid-open Publication No. 56-136,608 discloses a structure which is provided with a helical groove in the inner wall of the outer cylinder in the form of a sleeve, wherein the sleeve is integrated with the helical cylinder thereby to reduce the number of components and hence the manufacturing cost.
Among other things, however, an engagement projection protruding from the retainer cylinder extends through a guide groove, which is elongate in the axial direction of the guide cylinder, so as to be engaged with the helical groove. Therefore, whenever the retainer cylinder is assembled into the container for red-like cosmetic, the engagement projection must be inserted into the guide groove and engaged with the helical groove, thereby necessitating a difficult assembly. Also, in recent years, measures have been taken so that the assembling operation or the container for rod-like cosmetic is performed automatically. However, from the viewpoint of automated assembly also, it is necessary to perform a positioning for inserting the engagement projection into the guide groove, and another positioning for engaging the engagement projection into the helical groove, and such positioning steps have been recognized as obstacles to the desired automation.
DISCLOSURE OF THE INVENTION
According to the invention, a rod-like cosmetic 1 is fitted and held in a retainer cylinder 2 having a side wall which is provided with an engagement projection 3, and arranged inside of a guide cylinder 4 so as to be slidingly movable in the vertical direction. The guide cylinder 4 has a side wall that is formed with an axially elongate guide groove 5 through which extends the engagement projection 3, and also with an annular locking groove 10 at a location below the guide groove 5. The guide cylinder 4 is inserted into a sleeve 11 such that the guide cylinder 4 can be turned. This sleeve 11 has a lower portion provided with an annular locking rib 20 which is engageable with the locking groove 10 such that the sleeve 11 is connected to the guide cylinder 4 and prevented from disengagement therefrom. The sleeve 11 has an inner wall provided with helical knurls 13 comprised of a number of protrusions and depressions. The engagement projection 3 of the retainer cylinder 2 has a tip end portion provided with an engagement surface 15 which is comprised of a number of protrusions and depressions engage able with the helical knurls 13 or the sleeve 11. The present invention provides a container for a rod-like cosmetic having the above mentioned structure.
According to the wall of the sleeve 11 invention, as mentioned above, the inner is provided with helical knurls 13 comprised of a number of protrusions and depressions, the engagement projection 3 of the retainer cylinder 2 is engaged with the helical knurls 13. This means chat the sleeve 11 is formed integrally with the helical cylinder and it is thus possible to reduce the number of components. Moreover, the engagement groove in the inner wall of the sleeve 11 is comprised of helical knurls 13 which can be formed by a press forming process. Thus, the sleeve 11 can be
REFERENCES:
patent: 1085118 (1914-07-01), Pergeaux
patent: 2074016 (1937-03-01), Coryell
patent: 2303459 (1942-11-01), Noel
patent: 5234275 (1993-08-01), Gueret
Iwamoto Yoichi
Matsuoka Katsumi
Donnelly Jerome
Katsushika Co. Ltd.
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