Stick-shaped cosmetic dispenser

Abstract

To provide a stick-shaped cosmetic dispensing container that is as thin and short as possible in terms of an overall container length, and that can be used for upward filling of stick cosmetics.SOLUTION: In a rouge tube, a leg tube hangs down from a lower end of a rouge tray, and the leg tube is provided with a long rotation regulating surface and a male thread in an axial direction. A regulating tube into which the leg tube is inserted has a regulating hole that engages with the rotation regulating surface to make the rouge tube non-rotatably slidable, and has a guide protrusion protruding from its outer wall. A screw tube that allows the regulating tube to rotate freely but cannot be removed has a female screw screwed into the inner wall, into which the male screw of the rouge tube is screwed, and a male screw screwed into the outer wall. A base cylinder into which the screw tube is rotatably inserted has a female thread on the inner wall with which the male thread of the screw cylinder is screwed. The sleeve, which is rotatably held in the upper part of the base cylinder but cannot be detached, has a guide groove that is elongated in the axial direction and has a guide protrusion that engages with the inner wall and guides the regulating tube in a slidable but un-rotatable manner. The upper end is located below the upper end of the rouge tray when a lowering limit of the rouge tube is reached.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a container for feeding stick-shaped cosmetics, which contains stick-shaped cosmetics such as lipstick, lip balm, and stick foundation and feeds the stick-shaped cosmetics by a feeding mechanism. [Background technology]

[0002] Conventionally, there are known stick-type cosmetic dispensing containers in which a mechanism for dispensing the stick-type cosmetic is located below the stored stick-type cosmetic. While this type of dispensing container allows the outer diameter of the container to be made thinner, it has the drawback of making the overall length of the container longer. To address this, double-spiral stick-type cosmetic dispensing containers are known, as shown in Patent Documents 1 and 2. In this type of dispensing mechanism, the screw for dispensing the stick-type cosmetic is folded twice like an antenna, so the length of the dispensing mechanism can be made just over half the length of the dispensing stroke of the stick-type cosmetic, thereby shortening the overall length of the container. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2006-239277 [Patent Document 2] Jitsuzen Showa 51-47745 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the stick-shaped cosmetic dispensing container of Patent Document 1 has a guide groove 11 on the inner wall of the stick-shaped cosmetic storage space at the top of the tubular member 9 (sleeve) with which the engaging piece 16 of the dish member 18 (red dish) that holds the stick-shaped cosmetic can slide up and down but not rotate, and therefore is not suitable for the top-filling method of pouring hot-melted cosmetic into the storage space and allowing it to cool and solidify into a stick-shaped cosmetic in the shape of the storage space.

[0005] In contrast, the stick-type cosmetic dispenser of Patent Document 2 is compatible with the top-loading method because the stick-type cosmetic storage space at the top of the cylindrical storage section 1 (sleeve) is smooth. However, to accommodate the rouge plate 13 within the cylindrical storage section 1 (sleeve) so that it can slide up and down without rotating, a vertically movable cylinder 10 is placed between the cylindrical storage section 1 and the rouge plate 13, substituting the guide groove 11 within the cylindrical member 9 shown in Patent Document 1, resulting in an additional part compared to the configuration of Patent Document 1. Because the vertically movable cylinder 10 is placed between the cylindrical storage section 1 and the rouge plate 13, this configuration loses the advantage of a narrower outer diameter that this type of container had. Furthermore, the vertically movable cylinder 10 and the cylindrical storage section 1 are connected by an engaging protrusion 2 that engages with an axially elongated vertical groove 9, and the cylindrical storage section 1 and the rouge plate 13 are connected by an engaging protrusion 12 that engages with an axially elongated vertical groove 15. In other words, the vertically movable cylinder 10 is not restricted in its vertical movement except when the red plate 13 is at its lowest point, and it may move freely up and down, possibly producing a rattling sound. [Means for solving the problem]

[0006] The present invention is a stick-shaped cosmetic container whose main components are a red tube 2, a regulating tube 3, a screw tube 4, a base tube 5, and a sleeve 7.

[0007] The red tube 2 has a base tube 22 hanging down from the lower end of the red plate 21 that holds the stick-shaped cosmetic 1, and the outer wall of the base tube 22 is provided with a rotation restriction surface 221 that extends axially, and a male screw 222 is threaded onto the outer peripheral wall excluding the rotation restriction surface 221. The base tube 22 of the red tube 2 is inserted into a restriction tube 3, which is drilled with a restriction hole 31 that engages with the rotation restriction surface 221 of the base tube 22 and guides the red tube 2 so that it cannot rotate but can slide up and down, and a guide protrusion 32 protrudes from the outer wall. The screw tube 4, which holds the restriction tube 3 at the upper end so that it can rotate and cannot fall off, has a female screw 43 threaded onto the inner wall that screws onto the male screw 222 of the red tube 2, and a male screw 421 threaded onto the outer wall. The base tube 5 into which the screw tube 4 is rotatably inserted has a female screw 51 threaded onto the inner wall that screws onto the male screw 421 of the screw tube 4. The sleeve 7, which is held rotatably and non-detachably on the top of the base tube 5, covers the stick-shaped cosmetic 1, the red tube 2, and the regulating tube 3, and has a guide groove 721 engraved on its inner wall that extends axially and engages with the guide protrusion 32 of the regulating tube 3 to guide the regulating tube 3 vertically slidably but non-rotatably, with its upper end located below the upper end of the red plate 21 when the red tube 2 is at its lowest point. [Effects of the Invention]

[0008] During use, when the sleeve 7 and base tube 5 are rotated relative to each other, the regulating tube 3, whose guide protrusion 32 is engaged with the guide groove 721 in the sleeve 7, also moves accordingly. Furthermore, the red tube 2, whose regulating hole 31 in the regulating tube 3 is engaged with the rotation regulating surface 221, moves accordingly with the sleeve. Then, the male thread 421 of the screw tube 4, which has the female thread 43 that screws with the male thread 222 of the red tube 2, screws with the female thread 51 of the base tube 5, which rotates relative to the sleeve. As a result of this screwing action, the screw tube 4 and the red tube 2 slide up and down, causing the stick-shaped cosmetic 1 held in the red tube 2 to advance or retract.

[0009] The restricting hole 31 of the restricting tube 3, which prevents the rotation of the red cylinder 2, is located lower than the position of the engaging piece of the red cylinder in Patent Document 1, and the travel distance of the guide protrusion 32 of the restricting tube 3 is just over half the travel distance of the engaging piece in Patent Document 1. As a result, it is possible to position the upper end of the guide groove 721 of the sleeve 7 lower than the upper end of the red plate 21 when the red cylinder 2 is at its lowermost position, and the inner wall of the storage section 71 for the stick-type cosmetic material 1 in the sleeve 7 is smooth, making it possible to fill the cosmetic material directly from above.

[0010] This regulating tube 3 is rotatably held in line at the upper end of the screw tube 4, so it can be thinner than Patent Document 2 and can be configured with the same thickness as Patent Document 1. However, because the regulating tube 3 is arranged in line with the screw tube 4, the overall length of the container is longer than that of Patent Document 1 by the height of the regulating tube 3 plus a little more. Moreover, because this regulating tube 3 is rotatably held to the screw tube so that it cannot fall off, there is absolutely no rattle in the regulating tube 3 alone, and it does not make any rattling noises. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front cross-sectional view of a stick-shaped cosmetic material dispensing container according to an embodiment of the present invention, with the stick-shaped cosmetic material and the lipstick tube at their lowest positions. [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA′ in FIG. [Figure 3] 1 is a front cross-sectional view of a stick-shaped cosmetic and a lipstick tube of a stick-shaped cosmetic feeding container according to an embodiment of the present invention at the maximum lift point. [Figure 4] FIG. 4 is a cross-sectional view taken along the line BB′ in FIG. [Figure 5] FIG. 2 is a partially sectional exploded perspective view of a mechanism for delivering a stick-shaped cosmetic material according to an embodiment of the present invention. Example 1

[0012] A stick-type cosmetic dispensing container according to an embodiment of the present invention will be described with reference to Figures 1 to 5. The stick-type cosmetic dispensing container of the present invention comprises a dispensing mechanism 11 that houses a stick-type cosmetic 1 and slides the stick-type cosmetic 1 up and down, and an exterior body 12 that houses the dispensing mechanism 11 and is decorated with a design. The dispensing mechanism 11 comprises a red tube 2, a regulating tube 3, a screw tube 4, a base tube 5, a sleeve 7, and, if necessary, an O-ring 6. The exterior body 12 comprises a cap 8, an inner tube 9, and a hakama tube 10.

[0013] First, we will explain the feeding mechanism 11. The red tube 2 consists of a red plate 21 and a base tube 22 that hangs down from the red plate 21. The red plate 21 has a retaining rib 211 on its inner circumferential wall to hold a stick-shaped cosmetic product 1, such as lipstick, lip balm, or stick foundation. The base tube 22 is pipe-shaped with a smaller diameter than the red plate 21, and a pair of flat rotation restriction surfaces 221 are provided on its outer circumferential wall, extending axially. As a result, the radial cross section of the base tube 22 has a non-circular, pseudo-track-like shape, with flat surfaces on both sides of a cylindrical shape. A continuous left-handed male thread 222 is threaded on the outer circumferential wall of the base tube 22, excluding the rotation restriction surfaces 221. The male thread 222 of the red tube 2 begins at its lower end, and a stopper 223 protrudes from the lower thread groove. Furthermore, a notch 224 is provided at the lower end of the base tube 22, allowing the stopper 223 of the red tube 2 to bend inward.

[0014] The base tube 22 of the red tube 2 is inserted into the restriction hole 31 of the restriction tube 3. This restriction hole 31 has a shape similar to the radial cross-section of the base tube 2 and engages with the rotation restriction surface 221 of the base tube 2, guiding the red tube 2 so that it cannot rotate but can slide up and down. The outer diameter of the restriction tube 3 is approximately the same as the outer diameter of the red plate 21 of the red tube 2, and four guide protrusions 32 are evenly spaced and protrude from its outer peripheral wall. A cylindrical connecting portion 33 is provided at the bottom of the restriction tube 3, and multiple notches 331 are provided at the bottom end of the connecting portion 33 of the restriction tube 3 to allow it to bend radially outward. Furthermore, a connecting rib 332 protrudes from the lower inner wall of the connecting portion 33 of the restriction tube 3.

[0015] The regulating tube 3 is rotatably and non-detachably connected to the upper part of the screw tube 4. The upper part of the screw tube 4 is provided with a fitted part 41 having a diameter slightly smaller than the inner diameter of the connecting part 33 of the regulating tube 3 and larger than the inner diameter of the connecting rib 332, and the connecting rib 332 of the regulating tube 3 extends outward due to the cutout 331, climbing over it and engaging with it.

[0016] Below the fitted portion 41 of the screw cylinder 4 is a threaded portion 42 with a diameter smaller than the outer diameter of the regulating cylinder 3. A left-handed male thread 421 is screwed into this threaded portion 42. The male thread 421 of the screw cylinder 4 starts at the bottom end, and a stopper 422 is provided to protrude into the thread groove at the bottom end. Furthermore, a notch 423 is provided at the bottom end of the threaded portion 42, allowing the stopper 422 of the screw cylinder 4 to bend inward.

[0017] The inner diameter of the screw tube 4 is larger than the outer diameter of the leg tube 22 of the red tube 2, and the leg tube 22 is inserted through the regulating tube 3. A female thread 43 is threaded into the inner wall of the upper end of the screw tube 4, which threads with the male thread 222 of the red tube 2. The female thread 43 of the screw tube 4 is convex. When the red tube 2 is attached, the female thread 43 of the screw tube 4 is threadedly engaged with the male thread 222 of the red tube 2, and when the female thread 43 of the screw tube 4 abuts against the stopper 223 of the red tube 2 and is then screwed in further, the lower end of the leg tube 22 bends inward due to the notch 224 of the red tube 2, and the female thread 43 of the screw tube 4 clears the stopper 223 of the red tube 2. After attachment, the female thread 43 of the screw tube 4 abuts against the stopper 223 of the red tube 2, preventing it from falling off. As a result, the red tube 2 slides up and down within a range from the position where the female screw 43 of the screw tube 4 abuts against the stopper 223 of the red tube 2 to the position where the lower surface of the red plate 21 of the red tube 2 abuts against the upper surface of the regulating tube 3.

[0018] The base tube 5 is tubular, with an inner diameter slightly larger than the outer diameter of the threaded portion 42 of the threaded tube 4 and smaller than the outer diameter of the red plate 21 of the red tube 2 and the outer diameter of the regulating tube 3. The threaded tube 4 can be inserted rotatably and slidably up and down, and the lower surface of the regulating tube 3 abuts against it. A female thread 51 is threaded into the inner wall at the upper end of the base tube 5, which threads with the male thread 421 of the threaded tube 4. The female thread 51 of the base tube 5 is convex. When the threaded tube 4 is attached, the female thread 51 of the base tube 5 threads with the male thread 421 of the threaded tube 4, and when the female thread 51 of the base tube 5 abuts against the stopper 422 of the threaded tube 4 and is then further screwed in, the lower end of the threaded portion 42 bends inward due to the notch 423 of the threaded tube 4, and the female thread 51 of the base tube 5 clears the stopper 422 of the threaded tube 4. After attachment, the female thread 51 of the base tube 5 abuts against the stopper 422 of the threaded tube 4 to prevent it from falling off. As a result, the threaded rod 4 slides up and down within a range from the position where the female thread 51 of the base tube 5 abuts against the stopper 422 of the threaded tube 4 to the position where the lower surface of the connecting portion 33 of the regulating tube 3 abuts against the upper surface of the base tube 5.

[0019] The upper part of the base tube 5 forms a fitted portion 52 having approximately the same diameter as the outer diameter of the regulating tube 3 including the guide protrusion 32. A fitting groove 521 and a connecting groove 522 are engraved vertically on the outer peripheral wall of this fitted portion 52. An O-ring 6 molded from an elastic material such as NBR or elastomer is wound around this fitting groove 521. Below the fitted portion 52 of the base tube 5 forms a base portion 53 with an expanded outer diameter.

[0020] The sleeve 7 is shaped like a pipe and covers the stick-shaped cosmetic material 1, the red cylinder 2, the control cylinder 3, the screw cylinder 4, and the fitted portion 52 of the base cylinder 5. The portion of the inner wall of the sleeve 7 where the stick-shaped cosmetic material 1 and the red cylinder 2 face each other forms the storage portion 71, the portion where the control cylinder 3 faces each other forms the mechanism portion 72, and the portion where the fitted portion 52 of the base cylinder 5 faces each other forms the connecting portion 73. The inner diameters of the storage portion 71 and the mechanism portion 72 of the sleeve 7 are the same as or slightly larger than the outer diameter of the red plate 21 of the red cylinder 2 and the outer diameter of the control cylinder 3. The inner diameter of the connecting portion 73 of the sleeve 7 is larger than those of the storage portion 71 and the mechanism portion 72, and is the same as or slightly larger than the outer diameter including the guide protrusion 32 of the control cylinder 3 and the outer diameter of the fitted portion 52 of the base cylinder 5.

[0021] The connecting portion 73 of the sleeve 7 is fitted into the fitted portion 52 of the base tube 5, and a connecting rib 731 is protruded from the inner peripheral wall of the connecting portion 73 and engages with the connecting groove 522 of the base tube 5, connecting the base tube 5 and the sleeve 7 rotatably but non-detachably. The O-ring 6 wound around the fitting groove 521 of the base tube 5 elastically slides against the inner wall of the connecting portion 73 of the sleeve 7, generating sliding resistance when the base tube 5 and the sleeve 7 rotate relative to each other. This sliding resistance adjusts to a good feel for the rotation and extension operation. The mechanical portion 72 of the sleeve 7 has multiple guide grooves 721 engraved long in the axial direction on the inner wall. The guide protrusions 32 of the regulating tube 3 engage with these guide grooves 721, guiding the regulating tube 3 so that it cannot rotate but can slide up and down.

[0022] As a result, when the sleeve 7 and base tube 5 are rotated relative to each other, the regulating tube 3, whose guide protrusion 32 is engaged with the guide groove 721 of the sleeve 7, also moves. Furthermore, the red tube 2, whose rotation restriction surface 221 is engaged with the restriction hole 31 of the regulating tube 3, moves accordingly. As a result, the male thread 421 of the screw tube 4, which has the female thread 43 that threadably engages with the male thread 222 of the red tube 2, threads into the female thread 51 of the base tube 5, and the red tube 2, regulating tube 3, and screw tube 4 slide up and down due to the screwing action. Even while the red tube 2, regulating tube 3, and screw tube 4 slide up and down, the rotation restriction surface 221 of the red tube 2 and the restriction hole 31 of the regulating tube 3 are engaged non-rotatably, and the guide groove 721 of the sleeve 7 and the guide protrusion 32 of the regulating tube 3 are engaged non-rotatably, so the screwing action is maintained. The up and down sliding of this red tube 2 reaches its upper limit when the convex female thread 43 of the screw tube 4 abuts against the stopper 223 of the red tube 2 and the convex female thread 51 of the base tube 5 abuts against the stopper 422 of the screw tube 4, and reaches its lower limit when the underside of the red plate 21 of the red tube 2 abuts against the upper surface of the regulating tube 3 and the underside of the connecting part 33 of the regulating tube 3 abuts against the upper surface of the base tube 5.

[0023] Furthermore, in the prior art, as in Patent Document 1, the guide groove that non-rotatably guides the red plate 21 within the sleeve 7 so that it can slide up and down, requires a length corresponding to the stroke of the red plate 21, whereas the guide groove 721 of the present invention merely guides the regulating tube 3, which has a regulating hole 31 that non-rotatably guides the red cylinder 2 so that it can slide up and down, rotatably within the sleeve 7, and is just over half the length of the guide groove in Patent Document 1, and furthermore, begins below the guide groove in Patent Document 1. In other words, the upper end of the guide groove 721 is located below the upper end of the red plate 21 when the red cylinder 2 is at its lowermost position, and there are no irregularities within the storage section 71 of the sleeve 7, making it compatible with the direct filling method of stick-type cosmetic, in which molten cosmetic is directly filled and then cooled and solidified into stick-type cosmetic 1 within the storage section 71.

[0024] Next, the exterior body 12 that houses the dispensing mechanism 11 will be described. The base portion 53 of the base tube 5, which protrudes from the lower end of the sleeve 7 of the dispensing mechanism 11, is inserted into and secured within the middle tube 9 of the exterior body 11. The lower portion of the middle tube 9 is secured within the hakama tube 10, and the upper portion protrudes from the upper end of the hakama tube 10 to form a fitting portion 91. At this time, the sleeve 7 of the dispensing mechanism 11 protrudes beyond the fitting portion 91. A cap 8 covers the sleeve 7 and is detachably fitted into the fitting portion of the middle tube 9. Then, by removing the cap 8 and rotating the exposed sleeve 7 of the dispensing mechanism 11 and the hakama tube 10 of the exterior body 12 relative to each other, the base tube 5 of the dispensing mechanism 11, which is secured to the hakama tube 10 via the middle tube 9, is driven to rotate relative to the sleeve 7, allowing the stick-shaped cosmetic material 1 to be advanced or lowered. [Industrial Applicability]

[0025] In the embodiment of the present invention, a configuration has been described in which the dispensing mechanism 11, whose main components are the red tube 2, the regulating tube 3, the screw tube 4, the base tube 5, and the sleeve 7, is attached to the exterior body 12. However, by detachably engaging the dispensing mechanism 11 with the exterior body 12, it is possible to create a cartridge-type stick-type cosmetic dispensing container in which the dispensing mechanism 11 acts as a cartridge and the exterior body 12 acts as a holder, which can be attached and detached as needed.

[0026] In this embodiment of the present invention, a pair of rotation control surfaces 221 are provided axially on the outer surface of the leg tube 22 of the red tube 2, so that the radial cross section of the leg tube 22 is non-circular, approximately track-shaped, and the control hole 31 of the control tube 3 is similar in shape to the radial cross section of the leg tube 22, allowing the red tube 2 and the control tube 3 to slide freely up and down but not rotate.However, any commonly known configuration can be used to hold the red tube 2 and the control tube 3 sliding freely up and down but not rotate, such as using a rotation control surface 221 with a long axial groove on the outer surface of the leg tube 22 and a control hole 31 with a protrusion on the inner wall of the control tube 3 that engages with the groove of the rotation control surface 221.

[0027] 2 and 5, in this embodiment of the present invention, four guide protrusions 32 of the regulating barrel 3 are evenly arranged on the outer peripheral wall, and eight guide grooves 721 of the sleeve 7 are evenly arranged on the inner peripheral wall. It is desirable to arrange one or more, preferably two or more, guide protrusions 32 of the regulating barrel 3 evenly on the outer peripheral wall. Furthermore, the guide grooves 721 of the sleeve 7 with which the guide protrusions 32 of the regulating barrel 3 engage may be provided in the same number as the guide protrusions 32, or an integer multiple of the number of guide protrusions 32 may be arranged evenly on the inner peripheral wall.

[0028] In this embodiment of the present invention, notches 331 are provided in the lower end of connecting portion 33 at the bottom of regulating tube 3, and connecting portion 33 provided with connecting ribs 332 by these notches 331 is configured to be expandable and deformable in the outward radial direction, and this connecting rib 332 is rotatably and non-detachably engaged with connecting groove 411 of screw tube 4. This configuration may also be adapted such that multiple tongue-shaped connecting portions 33 that are deformable in the outward radial direction hang down evenly from the lower peripheral wall of regulating tube 3, and connecting ribs 332 provided on the inner wall of these connecting portions 33 are rotatably and non-detachably engaged with connecting groove 411 of screw tube 4.

[0029] In this embodiment of the present invention, an O-ring 6 is sandwiched between the base tube 5 and the sleeve 7, and this O-ring 6 generates sliding friction resistance when the base tube 5 and the sleeve 7 rotate relative to each other, adjusting the operation feel to a luxurious, moderate weight. However, the feeding mechanism 11 can be functioned even without this O-ring 6. In other words, it is possible to reduce costs by eliminating the O-ring 6, and the presence or absence of the O-ring 6 can be selected depending on the priorities of cost and quality. [Explanation of symbols]

[0030] 1. Stick-type cosmetics 2 Benizutsu 3 Regulator tube 4 Screw barrel 5 Base tube 7 Sleeve 21 Red Plate 22 Leg tube 31 Restriction hole 32 Guide protrusion 43 Female thread 51 Female thread 221 Rotational Control Surface 222 male thread 421 Male thread 721 Guide groove

Claims

[Claim 1] a red cylinder (2) in which a base tube (22) hangs down from the lower end of a red plate (21) for holding a stick-shaped cosmetic (1), a rotation restricting surface (221) extending in the axial direction is provided on the outer wall of the base tube (22), and a male screw (222) is threaded on the outer peripheral wall of the base tube (22) other than the rotation restricting surface (221); a restricting tube (3) having a restricting hole (31) drilled therein into which the leg tube (22) of the red tube (2) is inserted and which engages with the rotation restricting surface (221) of the leg tube (22) to guide the red tube (2) so as to be free to slide up and down without rotating, and a guide protrusion (32) protruding from its outer wall; a screw cylinder (4) that holds the regulating cylinder (3) at its upper end so that it can rotate freely and cannot fall off, and has a female screw (43) on its inner wall that screws into the male screw (222) of the red cylinder (2), and a male screw (421) on its outer wall; a base tube (5) into which the screw tube (4) is rotatably inserted, and having a female screw (51) threaded on its inner wall into which the male screw (421) of the screw tube (4) is threaded; The sleeve (7) is rotatably and non-detachably held on the upper part of the base tube (5), and covers the stick-shaped cosmetic (1), the lipstick tube (2), and the control tube (3). The sleeve (7) has a guide groove (721) engraved long in the axial direction on the inner wall, which engages with the guide protrusion (32) of the control tube (3) to guide the control tube (3) vertically slidably but non-rotatably. The stick-shaped cosmetic dispenser is characterized in that when the red container (2) is at its lowest position, the upper end of the guide groove (721) is located below the upper end of the red plate (21).

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