JP4313008B2 - Stick-shaped cosmetic container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stick-shaped cosmetic container in which stick-shaped cosmetics such as lipstick, lip balm, and teak are drawn out from the container.
[0002]
[Prior art]
Conventionally, many stick-shaped cosmetic containers having a structure shown in FIGS. 5 and 6 have been available as feeding containers for stick-shaped cosmetics such as lipsticks. This bar-shaped cosmetic container includes a feeding cylinder 31 that holds the lower end portion of the bar-shaped cosmetic 30, an inner cylinder 32 that accommodates the feeding cylinder 31 so as to be slidable up and down, and an outer cylinder 32 that is relatively rotatable with respect to the inner cylinder 32. A sleeve 33 (see FIG. 7) in which a spiral groove 33a is formed on the inner peripheral surface of the fitting is provided, a hull tube 34 fixed to the lower end portion of the inner tube 32, and a cap 35 which is attached to the huck tube 34. The two guide projections 31a projecting from the outer peripheral surface of the feeding cylinder 31 are inserted into the two vertical holes 32a drilled in the inner cylinder 32 so as to project laterally. A spiral groove 31b formed on the outer peripheral surface of both guide protrusions 31a is engaged with the spiral groove 33a of the sleeve 33. Further, an annular groove (undercut) 36 formed on the upper end portion of the inner peripheral surface of the sleeve 33 over the entire periphery thereof, and a protrusion formed on the upper end portion of the outer peripheral surface of the inner cylinder 32 over the entire periphery thereof. 37 is fitted so as to be relatively rotatable and non-slidable up and down. In FIG. 6, 32b is a horizontal hole formed in the upper end and lower end of the vertical holes 32a in the circumferential direction, and 32c is the upper end of the inner cylinder 32 from the upper end of one of the vertical holes 32a. It is a gap for diameter expansion reaching the opening.
[0003]
When such a bar-shaped cosmetic container is used, the sleeve 33 and the repellent tube 34 are relatively rotated with the cap 35 removed, whereby the inner tube 32 and the sleeve 33 fixed to the repellent tube 34. Are rotated relative to each other, and the feeding cylinder 31 is moved up and down with the relative rotation. Thereby, the bar-shaped cosmetic 30 can be fed out or lowered from the upper end opening of the inner cylinder 32.
[0004]
In the above-described bar-shaped cosmetic container, the feeding cylinder 31, the inner cylinder 32, the hook cylinder 34 and the like are usually made of a synthetic resin such as ABS resin, and the sleeve 33 is made of a metal such as aluminum. On the other hand, in order to control the amount of waste that increases year by year and promote resource recycling, it is required to collect waste separately according to the type of waste. However, in the above-described stick-shaped cosmetic container, the inner cylinder 32, the hook-shaped cylinder 34, and the sleeve 33 cannot be easily removed. Therefore, when the stick-shaped cosmetic container that is no longer used is discarded, In fact, it is not possible to separate and dispose of the inner cylinder 32, the hakama cylinder 34, and the sleeve 33, which is a metal waste, so that it is not possible to deal with the separate collection of garbage. Therefore, it has been proposed that the sleeve 33 be made of a synthetic resin material.
[0005]
[Problems to be solved by the invention]
However, the sleeve 33 has an annular groove 36 formed at the upper end of the inner peripheral surface thereof, and it is necessary to engrave the spiral groove 33a on the inner peripheral surface. When producing, it is difficult because of the mold structure. Therefore, it is necessary to use a complicated mold (not shown) as proposed in JP-A-10-329147, but the cost tends to increase. Further, if the synthetic resin sleeve 33 is manufactured to have the same thickness as that of the metal sleeve 33 by injection molding in order to be used as an alternative part of the metal sleeve 33, the annular concave groove 36 is formed at the time of injection molding. It is difficult for the molten synthetic resin material to turn around the cavity portion of the mold corresponding to the bottom portion or the front side of this portion, and the filling property and moldability tend to deteriorate. Further, in order to smoothly move the feeding cylinder 31 up and down, it is necessary to make the gradient of the sleeve 33 approximately 0 °. However, if the draft angle of the mold is set to approximately 0 °, it is very difficult to release the mold. It tends to be difficult to remove. In addition, even when it can be manufactured by injection molding, the strength of the annular concave groove 36 of the synthetic resin sleeve 33 is weak, and it tends to be difficult to put a product having the same thickness as the metal sleeve 33 into practical use.
[0006]
Further, if the bottom of the annular groove 36 of the sleeve 33 made of synthetic resin is thickened, the overall thickness is increased. Accordingly, the outer diameter and inner diameter of the sleeve 33 made of synthetic resin are different from those of the metal sleeve 33, and the interior member and the exterior member of the stick-shaped cosmetic container using the metal sleeve 33 (feed cylinder) 31, the inner cylinder 32, the hook cylinder 34, the cap 35, and the like) and cannot be used as a substitute part for the metal sleeve 33.
[0007]
The present invention has been made in view of such circumstances, and its purpose is to provide a bar-shaped cosmetic container that can be used as a substitute part for a metal sleeve and can be used for separate collection of garbage. To do.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a stick-shaped cosmetic container according to the present invention comprises a feeding cylinder for holding a stick-shaped cosmetic material, an inner cylinder in which the feeding cylinder is accommodated so as to be freely fed, and a relative rotation with respect to the inner cylinder. An outer cylinder to be externally fitted, and projecting a guide protrusion on the outer peripheral surface of the feeding cylinder, and engraving a first spiral groove on the outer peripheral surface of the guide protrusion, on the peripheral wall of the inner cylinder, The guide protrusion engages in a penetrating manner to form a vertical hole projecting to the outside, and an annular recess is formed on the outer peripheral surface of the portion below the vertical hole over the entire circumference of the outer peripheral surface. The outer cylinder is made of polycarbonate, and a second spiral groove is formed on the inner peripheral surface of the outer wall of the outer cylinder, with the upper end removed, and the second spiral groove mating with the first spiral groove. as well as, the lower portion than the second spiral groove is formed on a transparent thin portion, and the helical groove The inclination angle of both side surfaces facing to, and set at 105 ° to 120 ° with respect to the bottom surface of the spiral groove, while fitted in the inner cylinder to the outer tube, the transparent thin portion of the upper Kigai cylinder, in the a portion corresponding to the annular recess of the cylinder, by deep drawing from an outer peripheral portion inward annular projection which non-slidable fitted to the feeding direction of the relative rotatable in and feeding tube into the annular recess Is formed in a state in which the lower end portion of the transparent thin portion is removed.
[0009]
That is, the stick-shaped cosmetic container of the present invention includes a pay-out cylinder for holding the stick-shaped cosmetic, an inner cylinder in which the pay-out cylinder is housed so as to be freely fed, and an outer cylinder that is externally fitted to the inner cylinder so as to be relatively rotatable. And. A guide protrusion is provided on the outer peripheral surface of the feeding cylinder, a first spiral groove is formed on the outer peripheral surface of the guide protrusion, and the guide protrusion is engaged with the peripheral wall of the inner cylinder. In combination, a vertical hole projecting outside is formed. In addition, the outer cylinder is made of a synthetic resin material, and a second spiral groove is formed on the inner peripheral surface of the peripheral wall of the outer cylinder, with the upper end portion removed, and the second spiral groove mating with the first spiral groove. In addition, an annular protrusion is formed in the circumferential direction of the inner peripheral surface over the entire circumference of the inner peripheral surface at a portion below the second spiral groove, and the outer periphery of the peripheral wall of the inner cylinder corresponding to the annular protrusion An annular recess is provided in the surface portion so as to be rotatable relative to the annular protrusion and non-slidable in the feeding direction of the feeding cylinder. Thus, in the present invention, the outer cylinder is made of a synthetic resin material, and the annular protrusion formed on the inner peripheral surface of the peripheral wall of the outer cylinder, and the annular protrusion formed on the outer peripheral surface of the peripheral wall of the inner cylinder The recess is fitted so as to be relatively rotatable and non-slidable in the feeding direction of the feeding cylinder. For this reason, it is not necessary to provide the annular groove 36 as in the conventional example at the upper end portion of the inner peripheral surface of the outer wall of the outer cylinder, and there is no thin wall portion such as the bottom of the annular groove 36. Even in the case of manufacturing by injection molding, the mold structure is easy and the cost is low. In addition, when an outer cylinder with the same thickness as a metal sleeve is made of a synthetic resin material by injection molding, the filling property and moldability of the molten synthetic resin material at the time of injection molding are improved, and the draft angle of the mold is increased. Even if is set to approximately 0 °, the releasability is improved. Moreover, it is strong in strength. Therefore, in the present invention, while the outer cylinder is made of a synthetic resin material, an outer cylinder having the same thickness as the metal sleeve can be produced, and the interior member of the rod-shaped cosmetic container using the metal sleeve And compatibility with exterior members. For this reason, it can be used as a substitute part of a metal sleeve, and standardization of parts of a bar-shaped cosmetic container using a metal sleeve and a bar-shaped cosmetic container using a synthetic resin sleeve is possible. In addition, it can deal with the separate collection of garbage. Moreover, the stick-shaped cosmetic container of the present invention is dropped onto the floor or the like, and the second spiral groove on the inner peripheral surface of the outer cylinder and the first spiral groove on the outer peripheral surface of the guide protrusion of the feeding cylinder are joined to each other. Even when an impact force is applied, since the outer cylinder is made of a synthetic resin material, the impact force can be absorbed by the second spiral groove made of the synthetic resin material, and the outer cylinder, the feeding cylinder, etc. Is hardly damaged. And since the said outer cylinder is produced with the synthetic resin material, surface decoration is diversified. For example, a pearl tone can be obtained, and hot stamping, vapor deposition, printing, and the like are facilitated. Moreover, the outer cylinder can be made transparent, and is inexpensive and lightweight. In the present invention, examples of the “synthetic resin material” include polycarbonate (PC ) . With this PC, the same hand feeling and a metal such as aluminum, after which there is a feeling, the outer cylinder of the thickness of approximately 0.3 mm (of course, in the conventional example, the thin portion such as the bottom of the annular groove 36 Can be produced by injection molding. Moreover, since this thing is about 0.3 mm in thickness, the drawing process mentioned later is possible.
[0010]
Further, in the present invention , after forming the outer cylinder, the annular protrusion is formed by drawing the peripheral wall of the outer cylinder inward from the outer peripheral portion, so that the outer cylinder after molding is externally attached to the inner cylinder. In this state, a predetermined portion of the peripheral wall of the outer cylinder is drawn inward from the outer peripheral portion to form an annular protrusion on the peripheral wall of the outer cylinder, and the outer peripheral surface of the peripheral wall of the inner cylinder An annular recess is formed in the annular recess, and the annular projection can be fitted into the annular recess so as to be relatively rotatable and non-slidable in the feeding direction of the feeding cylinder.
[0011]
Furthermore, in the present invention , since the inclination angles of the opposite side surfaces of the spiral groove are set to 105 ° to 120 ° with respect to the bottom surface of the spiral groove, the normal inclination angle of the spiral groove is about 100 °. compared it to a large inclination angle of the spiral grooves of the present invention, it may turn good releasability.
[0012]
Incidentally, the upper Ki傾 oblique angle is preferably Ru is set to 105 ° ~1 1 0 ° to the bottom surface of the spiral groove.
[0013]
In the present invention, when the thickness of the portion to be drawn on the peripheral wall of the outer cylinder is set to 0.2 mm to 0.5 mm, the peripheral wall of the outer cylinder made of a synthetic resin material is damaged. without, Ru can make a drawing.
[0014]
In the present invention, when the thickness of the peripheral wall of the outer cylinder above the second spiral groove is set to 0.5 mm or more and the vertical length is set to 2 mm or more, the entire outer cylinder is Even if the thickness is reduced, the strength can be increased.
[0015]
In the present invention, when the length in the vertical direction of the portion where the second spiral groove is engraved on the peripheral wall of the outer cylinder is set to 45 mm or less, the mold can be easily removed at the time of mold release after injection molding. Become. The vertical length is preferably set to 45 mm or less, and preferably set to 40 mm or less.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0017]
FIG. 1 shows an embodiment of the stick-shaped cosmetic container of the present invention. In this embodiment, the bar-shaped cosmetic container has a transparent ABS (acrylonitrile butadiene styrene copolymer) middle tray (feeding cylinder) 1 on which the bar-shaped cosmetic 4 is held, and the middle tray 1 can be fed out freely. An inner cylinder 2 made of ABS, a sleeve 3 made of PC (external cylinder) fitted to the inner cylinder 2 so as to be rotatable relative to the inner cylinder 2, and an outer fitting made of relative rotation to the sleeve 3 so as to be relatively rotatable. An ABS hose tube (not shown; see hakama tube 34 in FIG. 5) fixed to the lower end of the inner tube 2 and an ABS cap (not shown in FIG. Cap 35).
[0018]
More specifically, the inner tray 1 is formed in a cylindrical shape, and two pairs of guide projections 11 made of thin curved plates are provided in a projecting position on the outer peripheral surface of the inner tray 1. A spiral groove (first spiral groove) 10 is formed on the surface (outer peripheral surface) of each of the guide protrusions 11, and each guide protrusion 11 has a spiral groove (second spiral groove) 21 of the sleeve 3 described later. It is formed in a matching spiral shape. Moreover, the partition plate 12 which supports the rod-shaped cosmetics 4 is provided in the lower part in the said intermediate plate 1, The upper part from the said partition plate 12 among the internal peripheral surfaces of the said intermediate plate 1 is the following. It is formed into a polyhedron shape as a detent for the stick-shaped cosmetic 4. In FIG. 1, reference numeral 12 a denotes a through hole formed in the partition plate 12.
[0019]
The inner cylinder 2 is formed in a cylindrical shape. The inner cylinder 2 has a portion of the peripheral wall of the inner cylinder 2 corresponding to the spiral groove 21 of the sleeve 3 at a position where the peripheral wall of the inner cylinder 2 is opposed to the upper end of the inner cylinder 2 vertically downward. A pair of vertical holes 2a that extend is formed, and horizontal holes (see the horizontal holes 32b in FIG. 5) are cut out in the circumferential direction at the upper and lower ends of both vertical holes 2a. Of the two vertical holes 2a, one vertical hole 2a is vertically formed with a gap for expanding the diameter (see the gap 32c in FIG. 5) reaching the upper end opening from the upper end portion.
[0020]
In addition, on the outer peripheral surface of the peripheral wall of the inner cylinder 2, two upper and lower annular grooves 14, 15 are provided along the circumferential direction of the peripheral wall of the inner cylinder 2 at the lower part of the lower ends of the vertical holes 2 a. Is formed over the entire circumference of the peripheral wall of the inner cylinder 2. A throttle portion 16 of the sleeve 3 to be described later is fitted into the upper annular groove 14, and an O-ring 17 slidably contacting the inner peripheral surface of the sleeve 3 is fitted into the lower annular groove 15. . In FIG. 1, reference numeral 18 denotes a support plate for receiving the inner tray 1 formed inside the inner cylinder 2.
[0021]
The sleeve 3 is formed in a cylindrical shape, and as shown in FIG. 2, the upper end portion of the inner peripheral surface of the peripheral wall is formed in a cylindrical surface. Further, on the inner peripheral surface of the peripheral wall of the sleeve 3 (thickness t is approximately 0.3 mm), a spiral groove 21 (thickness) that engages with the spiral grooves 10 of the both guide projections 11 below the cylindrical surface. T is approximately 0.7 mm) (see FIG. 3). The spiral groove 21 is constituted by 36 right-hand threads engraved on the inner peripheral surface of the peripheral wall of the sleeve 3. In addition, the inclination angle α of the opposite side surfaces 21a of the spiral groove 21 is set to 105 ° to 110 ° with respect to the bottom surface 21b of the spiral groove 21 (see FIG. 3). Further, on the inner peripheral surface of the peripheral wall of the sleeve 3, a throttle portion 16 is formed in the lower portion of the spiral groove 21.
[0022]
When the sleeve 3 is manufactured, first, a PC material is used, and the injection molded product 5 shown in FIG. 4 is formed by injection molding (the sleeve 3 shown in FIG. 3 has no drawn portion 16; that is, FIG. 2). The lower portion of the spiral groove 21 is a cylindrical shape). This injection molding is possible because the thickness of the peripheral wall of the sleeve 3 is approximately 0.3 mm. Next, the inner tray 1, the inner cylinder 2, and the injection molded product 5 are set, and in that state, the peripheral wall portion of the injection molded product 5 corresponding to the upper annular groove 14 of the inner cylinder 2 is drawn from the outer peripheral portion. The throttle portion 16 is fitted into the upper annular concave groove 14 of the peripheral wall of the inner cylinder 2. This drawing process is also possible because the peripheral wall of the sleeve 3 is approximately 0.3 mm thick. After that, the hook tube is inserted from above the sleeve 3 and attached to the outer tube, and the lower end of the hook tube is fixed to the inner tube 2, and a cap is attached to the hook tube.
[0023]
When setting the inner tray 1, the inner cylinder 2, and the sleeve 3, first, the inner dish 1 is disposed above the upper end opening of the inner cylinder 2, and the inner dish 1 is placed in both vertical holes 2 a of the inner cylinder 2. Both guide protrusions 11 are positioned, and in this state, the inner tray 1 is pushed into the inner cylinder 2 side. Thereby, one of the guide protrusions 11 is engaged with the vertical hole 2 a of the inner cylinder 2 through the gap of the inner cylinder 2 while expanding the upper end of the inner cylinder 2. Next, the sleeve 3 is inserted from above the inner cylinder 2. Thereby, the helical groove 10 of the guide protrusion 11 and the helical groove 21 of the sleeve 3 are joined.
[0024]
In the stick-shaped cosmetic container assembled in this manner, the hakama cylinder and the inner cylinder 2 fixed to the hakama cylinder are rotatable relative to the sleeve 3, and the hakama cylinder and the sleeve 3 are rotated relative to each other. With this relative rotation, the inner cylinder 2 rotates relative to the sleeve 3, and the inner tray 1 that rotates along with the rotation of the inner cylinder 2 moves up and down in the vertical hole 2a. Thereby, the inner tray 1 moves up and down in the inner cylinder 2.
[0025]
As described above, in the above-described embodiment, the PC sleeve 3 can be used and can be manufactured to the same thickness as the metal sleeve. Therefore, the interior member and the exterior member of the bar-shaped cosmetic container using the metal sleeve, etc. it is compatible with, also, Ru can be corresponding to the separate collection of garbage.
[0026]
Moreover, since the inclination angle α of the spiral groove 21 is set to 105 ° to 110 °, the releasability at the time of injection molding is improved.
[0027]
【The invention's effect】
As described above, according to the stick-shaped cosmetic container of the present invention, an outer cylinder having the same thickness as that of a metal sleeve can be produced while the outer cylinder is made of a synthetic resin material. It is compatible with the interior and exterior members of the used stick-shaped cosmetic container. For this reason, it can be used as a substitute part of a metal sleeve, and standardization of parts of a bar-shaped cosmetic container using a metal sleeve and a bar-shaped cosmetic container using a synthetic resin sleeve is possible. In addition, it can deal with the separate collection of garbage. Moreover, the stick-shaped cosmetic container of the present invention is dropped onto the floor or the like, and the second spiral groove on the inner peripheral surface of the outer cylinder and the first spiral groove on the outer peripheral surface of the guide protrusion of the feeding cylinder are joined to each other. Even when an impact force is applied, since the outer cylinder is made of a synthetic resin material, the impact force can be absorbed by the second spiral groove made of the synthetic resin material, and the outer cylinder, the feeding cylinder, etc. Is hardly damaged. And since the said outer cylinder is produced with the synthetic resin material, surface decoration is diversified. For example, a pearl tone can be obtained, and hot stamping, vapor deposition, printing, and the like are facilitated. Moreover, the outer cylinder can be made transparent, and is inexpensive and lightweight.
[0028]
Further, in the present invention , after forming the outer cylinder, the annular protrusion is formed by drawing the peripheral wall of the outer cylinder inward from the outer peripheral portion, so that the outer cylinder after molding is externally attached to the inner cylinder. In this state, a predetermined portion of the peripheral wall of the outer cylinder is drawn inward from the outer peripheral portion to form an annular protrusion on the peripheral wall of the outer cylinder, and the outer peripheral surface of the peripheral wall of the inner cylinder An annular recess is formed in the annular recess, and the annular projection can be fitted into the annular recess so as to be relatively rotatable and non-slidable in the feeding direction of the feeding cylinder.
[0029]
Furthermore, in the present invention , since the inclination angles of the opposite side surfaces of the spiral groove are set to 105 ° to 120 ° with respect to the bottom surface of the spiral groove, the normal inclination angle of the spiral groove is about 100 °. compared it to a large inclination angle of the spiral grooves of the present invention, it may turn good releasability.
[0030]
Incidentally, the upper Ki傾 oblique angle is preferably Ru is set to 105 ° ~1 1 0 ° to the bottom surface of the spiral groove.
[0031]
In the present invention, when the thickness of the portion to be drawn on the peripheral wall of the outer cylinder is set to 0.2 mm to 0.5 mm, the peripheral wall of the outer cylinder made of a synthetic resin material is damaged. without, Ru can make a drawing.
[0032]
In the present invention, when the thickness of the peripheral wall of the outer cylinder above the second spiral groove is set to 0.5 mm or more and the vertical length is set to 2 mm or more, the entire outer cylinder is Even if the thickness is reduced, the strength can be increased.
[0033]
In the present invention, when the length in the vertical direction of the portion where the second spiral groove is engraved on the peripheral wall of the outer cylinder is set to 45 mm or less, the mold can be easily removed at the time of mold release after injection molding. Become. The vertical length is preferably set to 45 mm or less, and preferably set to 40 mm or less.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a stick-shaped cosmetic container according to the present invention.
FIG. 2 is a cross-sectional view of a sleeve.
FIG. 3 is a cross-sectional view of an injection molded product of the sleeve.
FIG. 4 is a cross-sectional view showing an injection molded product.
FIG. 5 is an exploded perspective view of a conventional example.
FIG. 6 is a cross-sectional view showing a conventional example.
FIG. 7 is a cross-sectional view of a conventional sleeve.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Middle dish 2 Inner cylinder 2a Vertical hole 3 Sleeve 10 Spiral groove 11 Guide protrusion 14 Upper annular concave groove 16 Restriction part 21 Spiral groove

Claims (4)

A feeding cylinder for holding the bar-shaped cosmetic material, an inner cylinder in which the feeding cylinder is accommodated so as to be freely fed out, and an outer cylinder that is externally fitted to the inner cylinder so as to be rotatable relative to the outer cylinder. as well as projecting a guide projection, engraved a first helical groove on the outer peripheral surface of the guide projection, projecting in the peripheral wall of the inner tube, to the outside the guide projection is engaged with the insertion shape vertical hole And an annular recess is formed in the circumferential direction of the outer circumferential surface over the entire circumference of the outer circumferential surface of the portion below the vertical hole , the outer cylinder is made of polycarbonate, and the outer cylinder is formed. A second spiral groove that encloses the first spiral groove is formed on the inner peripheral surface of the peripheral wall with the upper end portion thereof removed, and a portion below the second spiral groove is formed as a transparent thin portion. formed in, and the inclination angle of the sides of faced each other of the spiral grooves, pairs on the bottom of the helical groove Set 105 ° to 120 °, while fitted in the inner cylinder to the outer tube, the transparent thin portion of the upper Kigai barrel, the portion corresponding to the annular recess of the inner tube, inward from the outer periphery By drawing into a ring, a ring-shaped protrusion that fits in the ring-shaped recess and is slidable relative to the feeding direction of the feeding cylinder is formed in a state excluding the lower end of the transparent thin-walled part. A stick-shaped cosmetic container characterized by that.   The stick-shaped cosmetic container according to claim 1, wherein a thickness of a portion of the peripheral wall of the outer cylinder to be drawn is set to 0.2 mm to 0.5 mm. The stick-shaped cosmetic container according to claim 1 or 2, wherein a thickness of a portion above the second spiral groove of the peripheral wall of the outer cylinder is set to 0.5 mm or more, and a length in the vertical direction is set to 2 mm or more. The stick-shaped cosmetic container according to any one of claims 1 to 3 , wherein a length in a vertical direction of a portion where the second spiral groove is engraved on the peripheral wall of the outer cylinder is set to 45 mm or less.

Images