JP3185201B2 - Stick-shaped cosmetic dispensing container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for accommodating a stick-shaped cosmetic such as lipstick, and more particularly to a container for feeding a stick-shaped cosmetic with improved productivity.

[0002]

2. Description of the Related Art Conventionally, stick cosmetic containers such as lipsticks have been
A spiral dispensing mechanism for dispensing a stick-shaped cosmetic by performing a rotating operation was provided therein. The spiral feeding mechanism includes a holding cylinder that holds the rod-shaped cosmetic, a guide cylinder that prevents the rotation of the holding cylinder, a spiral cylinder that moves the holding cylinder up and down, and a sleeve, an outer cylinder, a middle cylinder, and a cap that are exterior bodies. And so on. Therefore, according to Japanese Utility Model Laid-Open No. 56-136608, a spiral groove is screwed into the inner wall of the sleeve as the outer body, and the sleeve and the spiral cylinder are integrally formed to reduce the number of parts of the rod-shaped cosmetic container. Has been proposed.

[0003]

However, among these, the threaded projection protruding from the holding cylinder penetrates the guide groove that is long in the axial direction of the guide cylinder, and is screwed into the spiral groove.
Therefore, when assembling the holding cylinder to the stick-shaped cosmetic container,
It is necessary to make the screwing projection of the holding cylinder protrude into the guide groove and screw it into the spiral groove, and the assembly is difficult. In recent years, in order to reduce the manufacturing cost, a method of automating the assembling work of the stick-shaped cosmetic container has been adopted. However, in order to automate the assembly, it is necessary to perform positioning for inserting the screwing projection into the guide groove and positioning for screwing the screwing projection into the spiral groove. It was a neck process.

[0004]

Means for Solving the Problems A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held, and a threaded projection 3 is projected from a side wall, and the holding cylinder 2 is mounted inside the side wall so as to be slidable up and down. A guide tube 4 having a guide groove 5 through which the screwing projection 3 penetrates is formed in the axial direction so as to be long. The guide tube 4 is rotatably held on the outer periphery of the guide tube 4 so as not to fall off. And a sleeve 11 having a spiral knurl 13 formed by screwing a plurality of spiral concave grooves having a width smaller than that of the screwing protrusion 3 at equal intervals. A screwing surface 15 that is screwed to the spiral knurl 13 of the sleeve 11 at the tip of the portion 3
Is engraved. The present invention is a stick-shaped cosmetic dispensing container configured as described above.

[0005]

When the sleeve 11 and the guide cylinder 4 are rotated relative to each other, the holding cylinder 2 is prevented from rotating by the guide groove 5 of the guide cylinder 4 and the screwing projection 3 is screwed into the spiral knurl 13 of the sleeve 11. Because of the engagement, it moves up and down by the screwing action. At this time, the screwing surface 15 of the screwing projection 3 is screwed to the plurality of spiral knurls 13.

Further, when assembling the stick-shaped cosmetic dispensing container of the present invention, the guide cylinder 4 containing the holding cylinder 2 is inserted into the sleeve 11, and a spiral having a myriad of irregularities screwed on the inner wall of the sleeve 11. The screwing surface 15 of the screwing projection 3 of the holding cylinder 2 is screwed into any of the knurls 13. Thereafter, the sleeve 11 and the guide cylinder 4 are rotatably connected so as not to fall off.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A holding cylinder 2 for fitting and holding a stick-shaped cosmetic 1 such as lipstick has a threaded projection 3 projecting from a side wall. This holding cylinder 2
Is mounted inside the guide cylinder 4 so as to be slidable up and down. On the side wall of the guide tube 4, a guide groove 5 that extends through the threaded projection 3 of the holding tube 2 and protrudes from the side wall of the guide tube 4 is formed to be long in the axial direction to form a holding portion 6. Further, below the holding portion 6 is a sliding contact portion 7 having an enlarged outer diameter. Below the sliding contact portion 7, the outer diameter is further enlarged to form a fastening portion 8. When the holding portion 6 of the sliding contact portion 7 is on the outer wall,
The elastic projection 9 protrudes. A concave groove 10 for engagement is provided below the elastic projection 9.

The holding portion 6 of the guide tube 4 is
1 and is rotatably inserted into the inside. The lower end of the sleeve 11 covers the sliding portion 7 of the guide cylinder 4. The inner wall of the sleeve 11 facing the holding portion 6 of the guide cylinder 4 is a threaded portion 12, and the entire inner wall of the threaded portion 12 has
A spiral knurl 13 is formed by screwing a plurality of spiral concave grooves having a width smaller than that of the screwing projection 3 of the holding cylinder 2 at equal intervals. Below the threaded portion 12 of the sleeve 11 is a connecting portion 14 having a reduced thickness. This connecting part 1
The elastic projection 9 of the sliding portion 7 of the guide cylinder 4 is in sliding contact with 4. In addition, on the tip end surface of the screwing projection 3 of the holding cylinder 2 protruding from the guide groove 5 of the guide cylinder 4, an unevenness corresponding to the spiral knurl 13 of the sleeve 11 is engraved and screwed to the spiral knurl 13. Screwing surface 15. Also,
On the inner wall of the connecting portion 14 of the sleeve 11, a plurality of engaging projections 16 are provided so as to engage with the engaging grooves 10 of the guide cylinder 4. The engagement protrusion 16 may be configured to directly protrude from the inner wall of the sleeve 11 or may be configured to protrude inward from the outside.

As a result, the sleeve 11 is rotatably connected to the guide cylinder 4 so as not to fall off. And sleeve 1
When the guide cylinder 1 and the guide cylinder 4 are rotated relative to each other, since the elastic protrusion 9 of the guide cylinder 4 is in sliding contact with the connecting portion 14 of the sleeve 11, sliding frictional resistance is generated, and a good rotation operation feeling is obtained.
At this time, since the holding projection 2 is screwed into the spiral knurl 13 while the rotation of the holding cylinder 2 is prevented by the guide groove 5 of the guide cylinder 4, the holding cylinder 2 moves up and down by the screwing action. Has become. As means for generating the sliding frictional resistance, instead of projecting the elastic projection 9 on the sliding contact portion 7 of the guide cylinder 4, a fitting groove 17 is provided around the periphery as shown in FIG. An elastic body 18 such as an O-ring is fitted into the fitting groove 17,
Means for slidingly contacting the inner wall of the sleeve 11 is also possible.

The fastening portion 8 at the lower end of the guide cylinder 4 is
It is anchored inside. The upper end of the outer cylinder 19 has a middle cylinder 2
0 is fixed. The upper end of the middle cylinder 20 is
It forms a fitting portion 22 which projects upward and into which the cap 21 is removably fitted. The outer cylinder 19 and the middle cylinder 20
Can be integrally formed. In addition, holding cylinder 2,
The guide tube 4 and the sleeve 11 can also constitute a stick-shaped cosmetic delivery container.

As means for rotatably connecting the guide cylinder 4 and the sleeve 11, as shown in FIG.
A sleeve 23 is provided around the upper end or lower end of the holding portion 6 of the guide tube 4 in which the holding tube 2 is slidably mounted vertically, and the holding portion 6 of the guide tube 4 is rotatably inserted. A peripheral groove 24 is engraved on the inner wall of the guide tube 4 at a position corresponding to the engaging projection 23, and the engaging projection 23 is engaged with the peripheral groove 24 to connect the guide cylinder 4 and the sleeve 11. Means are also feasible.

[0012]

As described above, according to the present invention, the spiral knurl 13 having an infinite number of irregularities is screwed on the inner wall of the sleeve 11, and the screwing projection 3 of the holding cylinder 2 is screwed onto the spiral knurl 13.
Are screwed together, so that the sleeve 11 and the spiral cylinder are integrally formed, and the number of parts can be reduced. In addition, the spiral groove on the inner wall of the sleeve 11 is
Therefore, in the case of press molding or resin molding, it is possible to perform molding without the need for post-processing, and the production cost can be reduced.

Further, since the spiral groove is formed into a spiral knurl 13 having a myriad of irregularities, and a screwing surface 15 for screwing to the spiral knurl 13 is formed at the tip end surface of the screwing projection 3, so that the screwing projection is formed. 3 is screwed into a plurality of spiral knurls 13,
The amount of hooking of one spiral knurl 13 with which the screwing surface 15 is screwed can be reduced. Therefore, since the groove depth of the spiral knurl 13 can be made smaller than that of the conventional one, the wall thickness of the sleeve 11 itself can be made thinner, and the thickness of the whole container can be made thinner though it is slightly. Further, when the sleeve 11 having one or two spirals formed on the inner wall of the conventional sleeve 11 is formed of a synthetic resin, a trace of a spiral groove is generated on the surface of the sleeve 11 due to a difference in shrinkage due to a difference in wall thickness. However, the sleeve 11 of the present invention has a spiral knurl 13 engraved all around the inner wall, so that it is impossible to discriminate it from the outside. Therefore, even if the sleeve 11 is molded with a synthetic resin, a smooth surface of the sleeve 11 can be obtained as in the case of molding with a metal.

Further, since the spiral groove is formed into a spiral knurl 13 having a myriad of irregularities, and a screwing surface 15 for screwing to the spiral knurl 13 is formed on the tip end surface of the screwing projection 3, the screwing projection is formed. It is possible to perform an assembling operation without requiring alignment when screwing the 3 into the spiral knurl 13, and it is easy to correspond to automation, and the assembling cost can be reduced. Therefore,
ADVANTAGE OF THE INVENTION The stick-shaped cosmetics feeding container of this invention can reduce a component cost, a manufacturing cost, and an assembly cost, and can provide the rod-shaped cosmetics feeding container with extremely high productivity.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a stick-shaped cosmetic dispensing container according to an embodiment of the present invention.

FIG. 2 is a perspective view of a holding cylinder according to the embodiment of the present invention.

FIG. 3 is a partial sectional perspective view of a sleeve according to the embodiment of the present invention.

FIG. 4 is a front sectional view of another embodiment of the stick-shaped cosmetic dispensing container of the present invention.

FIG. 5 and

FIG. 6 is a sectional view of a knurled embodiment of the inner wall of the sleeve.

[Description of sign]

 REFERENCE SIGNS LIST 1 rod-shaped cosmetic material 2 holding cylinder 3 screwing protrusion 4 guide cylinder 5 guide groove 10 engaging groove 11 sleeve 13 spiral knurl 15 screwing surface 16 engaging protrusion 23 engaging protrusion 24 peripheral groove

Claims (2)

(57) [Claims] 1. A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held, and a threaded projection 3 is projected from a side wall, and the holding cylinder 2 is vertically slidably mounted inside, and the side wall is provided with the threaded projection. A guide tube 5 in which a guide groove 5 through which the portion 3 penetrates is formed so as to extend in the axial direction, and a concave groove 10 for engagement is formed in a lower outer wall of the guide groove 5, and the guide tube 4 is rotatably inserted. At the lower portion, an engaging projection 16 for engaging with the engaging concave groove 10 is protruded and connected so as not to fall off, and a spiral narrower than the screwing projection 3 of the holding cylinder 2 over the entire inner wall. Helical knurl 1 with a plurality of spiral grooves at equal intervals
And a sleeve 11 that is at least formed on the end of the screwing projection 3 of the holding cylinder 2.
Characterized in that a screwing surface 15 for screwing with the spiral knurl 13 is engraved. 2. A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held, and a threaded projection 3 is provided on a side wall, and the holding cylinder 2 is vertically slidably mounted on the side wall. A guide tube 4 in which a guide groove 5 through which the portion 3 penetrates is formed to be long in the axial direction, and an engagement protrusion 23 is provided on an outer wall above or below the guide groove 5.
The guide cylinder 4 is rotatably inserted, and a plurality of spiral concave grooves having a width smaller than the screwing projection 3 of the holding cylinder 2 are provided at equal intervals around the entire inner wall. A circumferential groove which forms the knurl 13 and is rotatably engaged with the guide tube 4 at a position corresponding to the engagement protrusion 23 of the guide tube 4 at the upper or lower portion of the inner wall; 24, and the holding cylinder 2
A screw-shaped cosmetic dispensing container characterized in that a screwing surface 15 for screwing to the spiral knurl 13 of the sleeve 11 is engraved at the tip of the screwing projection 3.