JPS6227804B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION SUMMARY OF THE INVENTION A stick, particularly a cosmetic stick, comprises a grip, a piston housed therein, and a cylindrical threaded part filled with a paintable object. The threaded portion is rotatably disposed relative to the gripping portion and is screwed onto the externally threaded piston. The threaded portion is supported by the grip portion so as not to move in the axial direction. The piston is held non-rotatably in the grip and is guided so as to be movable in the axial direction.
This causes the piston to be moved into the thread during rotation of the thread.

The present invention relates to a stick, in particular a cosmetic stick, which comprises a gripping part, a piston housed therein, and a cylindrical threaded part filled with a paintable substance, the threaded part being connected to the gripping part. It is rotatably arranged and screwed onto an externally threaded piston.

Stakes of this type are known (German Published Application No. 2728969). This stake is characterized by its simple construction with a small number of components and can therefore be manufactured at low cost.
To use this stick, the threaded part is rotated relative to the gripping part and screwed onto the piston, which is firmly housed in the gripping part, so that the smearable object filled in the threaded part follows the rotational path. While being pushed out, the threaded part gradually rotates and enters into the gripping part. Thus, due to the threads being screwed deeper into the gripping part as a result of consumption, the stake as a whole can no longer be held satisfactorily in the hand and handling of the consumed paint material becomes correspondingly difficult.

It is an object of the invention that, despite the consumption of the paintable object as a result of use, the entire length of the stake, i.e. the gripping part and the threaded part accommodated therein, remains unchanged, thus providing sufficient coverage of the paintable object. Stakes that can be handled well even after consumption;
In particular, it is to provide cosmetic sticks.

This object is achieved according to the invention by the characterizing parts of claim 1, preferred embodiments of which are indicated in the embodiments section.

According to the invention, the threaded part is supported in such a way that it can rotate relative to the gripping part but cannot move in the axial direction, whereas the piston is held in the gripping part so as not to rotate but in the axial direction. You will be guided around freely. When the threaded part is rotated during use of the stick, a piston movably guided in the gripping part projects into the interior of the threaded part and forces out the smearable object filled into the threaded part. This causes the paintable object to protrude from the thread, but does not shorten the length of the thread section that projects beyond the grip. The stake can thus be easily handled at any time, ie even when the paint object has been consumed accordingly.

Preferably, the support of the threaded part in the gripping part is provided by a stake connection, which facilitates the assembly of the stake and the exchange of an empty threaded part with a filled threaded part. In a simple method of the state of the art, this snap connection can be realized by providing an inward projection on the inner wall of the gripping part, which is preferably associated with a ring groove in the threaded part obtained by stamping. . Good centering and stable support of the cosmetic staple are achieved by arranging or forming the inward protrusion of the grip and the ring groove of the threaded portion at a distance from the respective corresponding ends of the grip and the threaded portion. This is achieved by

Preventing the rotation of the paint object within the threaded portion is suitable for further protruding the tip of the stick.
This is rationally achieved by longitudinal ribs on the inner wall of the threaded part. However, it is also suitable for the internal cross-section of the threaded part to be non-circular, and the threaded part is preferably made of a metal cylinder, while the gripping part and the piston can be made of plastic.

Hereinafter, the present invention will be described by way of example with reference to the accompanying drawings.

The cosmetic stick, indicated generally by the reference numeral 1 in FIG. For ease of understanding, the cover cap that can be placed over from the left side in FIG. 1 is not shown.

As can be seen in particular from FIG. 2, the threaded part 4 is formed by a cylindrical tube and accommodates therein a paintable object 5;
Especially filling there. Examples of the paintable object include lipstick materials. Beneath the receiving area 6 for the object 5, the threaded part 4 has a recess 7, which on the one hand forms a ring groove 8 on the outer surface of the threaded part 4 and on the other hand projects from the inner surface of the threaded part 4. A ring protrusion 9 is formed. When the threaded part 4 is inserted into the gripping part 2, the inward protrusion 10 formed at the upper end of the gripping part 2 fits into the ring groove 8 of the threaded part 4 as a kind of snap connection. Thereby, the threaded part 4 is supported so as not to move in the longitudinal direction with respect to the grip part 2, but can rotate with respect to the grip part 2. The inward projection 10 can be formed by individual radial projections, but preferably it is formed in the form of a ring surrounding the inner surface of the gripping part 2. The ring groove 8, like the inward projection 10, is also spaced from the proximal end, so that centering of the threaded part 4 when inserted into the grip part 2 is achieved. Furthermore, this also improves the stability of the stake.

Furthermore, as can be seen from FIG.
The outer thread 12 is formed in the outer thread 12. In this case, the thread path 11 is preferably formed by stamping on the ring projection 9 projecting from the inner surface of the threaded part 4, in which case a thread having a pitch of, for example, 0.5 mm in the metric system is stamped without cutting.

The piston 3 does not rotate, but is disposed within the grip 2 so as to be freely movable in the longitudinal direction. For this purpose, the grip side end of the piston 3 is formed with a radial projection 13 in the form of a rib, which cooperates with a rib 14 extending completely in the longitudinal direction on the inner surface of the grip 2. As can be clearly seen in FIG. 1, the radial projections 13 overlap the ribs 14 of the gripper 2 in this case. This achieves prevention of rotation of the piston 3 and also realizes longitudinal guidance of the piston 3.

The action of the stake is as follows. If the paintable object 5 is to be made to protrude further from the threaded part 4, the threaded part 4 is rotated. Thereby, the screw path 11 cooperates with the external thread 12 of the piston 3. However, since the piston 3 cannot rotate but is disposed axially movably in the gripping part 2, this allows the piston 3 to move relative to the threaded part 4 so that the object which can be coated on its front surface can be moved more easily. 5 from the threaded part 4. As a result, the paintable object 5 protrudes, but at the same time, the threaded part 4 reduces the length of the threaded part 4 protruding from the grip part 2.
is prevented from entering the inside of the

In order to be especially resistant to bending stress conditions, the threaded portion is preferably made of metal. In order to be able to further project the tip of the core-shaped paintable object 5 accommodated in the threaded part 4, the object 5 is accommodated in the threaded part 4 so as not to rotate. This is done by form fixation according to the measures of FIGS. 5 and 6. For this purpose, according to FIG.
has a large number of longitudinal ribs 1 distributed around its circumference.
Form 5. According to FIG. 6, a threaded part 4 with a non-circular internal cross section is used. In this case, hexagonal or oval cross sections are particularly suitable.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the cosmetic stick according to the present invention, Fig. 2 is a sectional view of the threaded portion of the stick shown in Fig. 1, Fig. 3 is a front view of the piston, and Fig. 4 is a gripper. Sectional view of the section, Figures 5 and 6
The figure is a sectional view of the threaded part shown in FIG. 2 in the storage area for the paintable object. 1...stacks, 2...gripping parts, 3...pistons,
4... Threaded portion, 5... Paintable object, 6... Accommodation area, 7
... recessed part, 8... ring groove part, 9... ring protrusion, 10... inward protrusion, 11... screw path, 12...
External thread, 13...protrusion, 14...rib, 15...vertical rib.

Claims (1)

[Scope of Claims] 1. A gripping portion, a piston housed therein and held so as not to rotate, movable in the axial direction and provided with an external thread, and a piston arranged to be rotatable and fixed in the axial direction. In sticks, especially cosmetic sticks, which consist of a threaded part, in particular a cosmetic stick, the threaded part 4 is filled with a cylindrical paintable object 5 and is fitted with a snap connection 7, 8, 10 such that it cannot move axially into the gripping part 2. The threaded portion 4 is further provided with a ring protrusion 9 inwardly from the inner wall thereof, and a threaded passage 11 is formed in the ring protrusion 9. A status quo that is characterized by working and becoming. 2. A preferably ring-shaped inward protrusion 10 is provided on the inner wall of the gripping part 2, and is fitted into a ring groove 8 on the outer surface of the threaded part 4 formed in correspondence with the inward protrusion 10. A stake as claimed in claim 1. 3. The inward protrusion 10 is formed with a slight spacing from the end of the threaded portion of the gripping portion 2, and the ring groove portion 8 is formed with a slight spacing from the end of the threaded portion 4 on the gripping portion side. The second claim characterized in that
Stats listed in section. 4. Claim 2 or 3, characterized in that the ring groove part 8 is formed in the threaded part 4 by the recessed part 7, and this is made to protrude from the inner surface of the cylindrical threaded part 4 as a ring protrusion part. Stats listed. 5. Claims 1 to 4, characterized in that the piston 3 is provided with a radial protrusion 13, and the protrusion 13 overlaps a longitudinally extending rib 14 protruding from the inner surface of the gripping part 2. The status described in any one of the following paragraphs. 6. A patent claim characterized in that the radial protrusion 13 of the piston 3 is formed at its end on the side of the grip, and the rib 14 extends from the bottom of the grip 2 approximately to the inward protrusion 10 of the grip 2. The status described in item 5 within the scope of . 7. A stick according to any one of claims 1 to 6, characterized in that the paintable object 5 is held in the threaded part 4 so as not to rotate by fixing its shape. 8, characterized in that the threaded part 4 is provided with longitudinal ribs 15 distributed over the circumference on its inner surface in the receiving area 6 of the removable object 5, or is provided with an at least partially non-circular internal cross section (FIG. 6). The stake according to claim 7. 9. The stay according to any one of claims 1 to 8, wherein the threaded portion 4 is formed of a metal cylinder.