Rotating cosmetic tool

Abstract

To provide a rotational delivery type cosmetic tool which can maintain a straight state (straight line state) of a rod-shaped cosmetic protruded from a tip of a refill, and a parallel state to a shaft center line of a main body.SOLUTION: A rotational delivery type cosmetic tool is a rotational delivery type cosmetic tool 1 in which two or more refills 9 are stored in a shaft cylinder 2, the refills 9 each loaded with a solid core 9b are supported by a guide cylinder 11 in a movable state in an axial direction of the shaft cylinder 2, and a tip 9a of one refill 9 selected by relative rotation operation of the guide cylinder 11 to the shaft cylinder 2 advances to a tip opening 6a arranged in a mouth tip member 6 of the shaft cylinder 2 by a cylindrical cam 15 fixed into the shaft cylinder 2, and the tip opening 6a of the mouth tip member 6 is formed at a position eccentric from a shaft center line of the shaft cylinder 2, and therefore the refill 9 whose tip 9a advances to the tip opening 6a can be maintained in a straight line state.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a rotary dispenser cosmetic tool that accommodates a plurality of stick-shaped cosmetic materials in a barrel and selectively ejects a required amount of the stick-shaped cosmetic materials from the tip of the barrel. [Background technology]

[0002] Various cosmetic tools are available that contain stick-shaped cosmetics in a rotary dispenser container and dispense the required amount of the cosmetic from the tip of the container. Among these, pencil-type eyebrow cosmetics, which are used to apply cosmetics to the eyebrows, have been proposed, in which one of multiple stick-shaped cosmetics is selectively ejected from the tip of the container.

[0003] A rotary advance cosmetic device that selectively projects one of a plurality of stick-shaped cosmetics from the tip of a container as described above is disclosed in Patent Document 1 listed below. Specifically, the rotary advance cosmetic device (multi-type pencil) disclosed in Patent Document 1 listed below comprises a cylindrical main body, a cylindrical front tube that engages with the main body, and four slide parts that are connected to four types of drawing materials (stick-shaped cosmetics) held inside the front tube and are provided so as to be able to slide a certain distance relative to the main body. When any one of the slide parts advances a certain distance relative to the main body, the drawing material connected to that slide part is exposed from the front tube, and in this state, the drawing material advances when the front tube and the main body are rotated relative to each other in one direction. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-228883 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the rotary dispenser cosmetic device disclosed in Patent Document 1, four cartridges, each containing one of four types of stick-shaped cosmetic materials, are housed in a cylindrical main body and supported by a slide section so as to be individually movable in the axial direction. These four cartridges are arranged parallel to one another around the axial centerline of the main body, avoiding the axial centerline. Meanwhile, the opening at the tip of the main body, from which the stick-shaped cosmetic materials selectively protrude, is configured to be located at the tip of a cone and aligned with the axial centerline of the main body.

[0006] As a result, only the tip of the cartridge loaded with the selected stick-shaped cosmetic material is bent from a position away from the axial centerline of the main body toward the axial centerline of the main body, resulting in a non-linear deformation (flexure, elastic deformation, etc.). In other words, the cartridge loaded with the stick-shaped cosmetic material protruding from the opening at the tip of the main body is slightly bent relative to the axial centerline of the main body, and as anyone has experienced, this looks strange.

[0007] The present invention has been made to solve the above-mentioned problems, and has an object to provide a rotary-dispensing cosmetic device in which a stick-shaped cosmetic material protruding from an opening at the tip of the main body can be maintained in a straight state (linear state) and parallel to the axial center line of the main body. [Means for solving the problem]

[0008] The rotary dispensing cosmetic device according to the present invention is a rotary dispensing cosmetic device in which two or more refills are accommodated in a barrel, and the refills loaded with stick-shaped cosmetic material are supported by a guide tube so as to be movable in the axial direction of the barrel, and the tip of one refill selected by the relative rotation of the guide tube with respect to the barrel is advanced to a tip opening provided in a spout member of the barrel by a cylindrical cam fixed inside the barrel, and by forming the tip opening of the spout member at a position eccentric to the axial center line of the barrel, the refill maintains a linear state when the tip has advanced to the tip opening. A dial knob is attached to the rear end of the barrel so as to be rotatable relative to the barrel, and the dial knob is attached to the guide tube, and the guide tube rotates about its axis by rotating the dial knob. Furthermore, a pair of notches are formed in the rear end of the barrel along the axial direction of the barrel, and a pair of base ends of clips are attached to the notches at the boundary between the rear end of the barrel and the dial knob. It is characterized by:

[0009] In addition, in the rotary dispensing cosmetic tool according to the present invention, The barrel is composed of a front barrel and a rear barrel, the tip member is attached to the front end of the front barrel, and the rear barrel is connected to the front barrel via a shaft coupling to form the barrel.

[0010] In addition, in the rotary dispensing cosmetic tool according to the present invention, The tip member is formed with a convex portion along the axial direction, and the shaft coupling is formed with a positioning opening into which the convex portion is inserted in the axial direction.

[0011] and, In the front shaft, the convex portion is inserted into the alignment opening, thereby forming an alignment mechanism in the shaft rotation direction between the tip member and the shaft coupling.

[0012] In addition, in the rotary dispensing cosmetic tool according to the present invention, The spout member is configured such that a rotor that gradually reduces in diameter toward the tip opening is attached to a holder, and the holder holds the rotor so that it can rotate about its axis, and further, the inner circumferential surface of the rotor functions as a guide section that guides the tip of the refill so that it can advance and retreat in the axial direction, and a first rib that is parallel to the axial direction is formed on the guide section, and the refill is configured such that a cylindrically formed front barrel is attached to a bottomed, cylindrically formed rear barrel so that it can rotate about its axis, and further, the refill contains a threaded rod with a piston at its tip, and a stick-shaped cosmetic material is loaded in the front barrel, and a second rib that is parallel to the axial direction is formed on the outer circumferential surface of the front part, and the first rib and the second rib come into contact with each other in response to the rotation of the rotor, causing the front barrel to rotate, and the piston of the threaded rod acts to advance and retreat in response to the rotation of the front barrel, and the stick-shaped cosmetic material loaded in the front barrel is pushed by the advancing piston and is dispensed from the tip of the refill, A sliding top is connected to the rear end of the refill, sliding against the cylindrical cam to move the refill in the axial direction of the barrel. Furthermore, the cylindrical cam fixed inside the barrel has a cam flat portion formed in an arc shape along the circumferential direction, a pair of left and right cam slopes formed so as to point forward from both ends of the cam flat portion, and a cam top portion of a predetermined width where the tips of the pair of cam slopes are connected, and when the sliding top connected to the refill abuts against the cam top portion, the tip of the refill advances to the tip opening of the spout member, and in this state, the sliding tops connected to other refills are positioned on the cam flat portion. [Effects of the Invention]

[0013] According to the rotary dispensing cosmetic device of the present invention, the multiple refills housed in the barrel are supported by a guide tube that is manually rotated so that they can be moved axially. When the guide tube undergoes rotational motion, the tip of each refill is selectively advanced in sequence to the tip opening provided in the tip member of the barrel due to interaction with a cylindrical cam fixed inside the barrel.

[0014] In this case, the tip opening of the spout member is formed at a position eccentric to the axial centerline of the barrel, which allows the refill that has advanced to the tip opening to maintain a substantially straight state within the barrel. This solves the problem of conventional rotary-type cosmetic devices in which the refill (equivalent to a conventional cartridge) protrudes in a bent position relative to the axial center of the barrel.

[0015] Furthermore, according to the present invention, as described above, the refill can be maintained in a straight state within the barrel, so the stick-shaped cosmetic material can be dispensed from the tip of the refill without bending, flexing, elastic deformation, impact, etc.

[0016] In addition, the cylindrical cam that advances the tip of the refill has a pair of left and right cam slopes formed to form a sharp point on the front, so the refill can be selected regardless of whether the guide tube is rotated left or right. Therefore, in this type of rotary-advance cosmetic device that houses three or more refills in the barrel, it is possible to quickly select the refill you need. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view showing the external configuration of a rotary-advance cosmetic tool according to the present invention. [Figure 2] FIG. 2 shows the overall structure of the rotary-advance cosmetic device of the present invention, where (A) is a front view, (B) is a central cross-sectional view, and (C) is an enlarged cross-sectional view taken along line b-b' in the direction of the arrow. [Figure 3] 3 is an enlarged cross-sectional view taken along line aa' in FIG. 2 and seen in the direction of the arrow. [Figure 4] FIG. 4 is a perspective view showing a state in which the front shaft has been removed and the refill can be replaced. [Figure 5] FIG. 5 shows a state in which the barrel has been removed and the stick-shaped cosmetic material has been unwound, (A) being a perspective view, and (B) being a perspective view seen from the opposite side to (A). [Figure 6]FIG. 6 shows a state in which the barrel has been removed and a refill (stick-shaped cosmetic material) has been stored, (A) being a perspective view, and (B) being a perspective view seen from the opposite side of (A). [Figure 7] FIG. 7 is a partially exploded development view of the rotary advance cosmetic tool shown in FIG. [Figure 8] FIG. 8 shows the individual components of the front axle, where (A) is a perspective view, (B) is a front view, and (C) is a central cross-sectional view. [Figure 9A] FIG. 9A is a diagram showing the individual configuration of the tip member, where (A) is a top view, (B) is a front view, (C) is a bottom view, and (D) is a central cross-sectional view. [Figure 9B] Figure 9B is a diagram showing the individual configuration of the tip member, where (E) is an oblique view from the tip end side, (F) is an oblique view from the rear end side, (G) is a left side view, and (H) is a right side view. [Figure 10] FIG. 10 is a central cross-sectional view of the holder 6f. [Figure 11] Figure 11 shows the individual configuration of the rotating body 6g, where (A) is a front view, (B) is a central cross-sectional view, (C) is a left side view, (D) is a right side view, (E) is an oblique view seen from the tip end side, and (F) is an oblique view seen from the rear end side. [Figure 12] FIG. 12 shows the individual components of the rear axle, where (A) is a perspective view, (B) is a front view, (C) is a central cross-sectional view, and (D) is a right side view. [Figure 13A] FIG. 13A is a diagram showing the individual configuration of the cylindrical cam, where (A) is a top view, (B) is a front view, (C) is a central cross-sectional view, and (D) is a bottom view. [Figure 13B] FIG. 13B is a diagram showing the structure of a cylindrical cam alone, in which (E) is a perspective view, (F) is a left side view, and (G) is a right side view. [Figure 14] Figure 14 shows the state in which a cylindrical cam is about to be attached to the rear axle, where (A) is a front view, (B) is a central cross-sectional view, (C) is an oblique view, and (D) is an enlarged side view seen from the axial direction. [Figure 15]FIG. 15 is a diagram showing the individual configuration of the guide tube, where (A) is a perspective view, (B) is a top view, (C) is a front view, and (D) is a central cross-sectional view. [Figure 16] FIG. 16 is a diagram showing the structure of a single component of a shaft coupling, where (A) is a top view, (B) is a front view, (C) is a central cross-sectional view, and (D) is a perspective view. [Figure 17] FIG. 17 shows the individual components of the dial knob, where (A) is a perspective view, (B) is a front view, and (C) is a central cross-sectional view. [Figure 18] Figure 18 shows the appearance of a refill containing a solid core, where (A) is a front view, (B) is a central cross-sectional view, (C) is an oblique view, (D) is an enlarged view of the dotted line area in (C), (E) is an enlarged left side view, and (F) is a right side view. [Figure 19] Figure 19 shows the appearance of the refill with the solid core extended, where (A) is a front view, (B) is a central cross-sectional view, (C) is an oblique view, and (D) is an enlarged view of the dotted line area in (C). [Figure 20] Figure 20 shows the individual components of the front barrel of the refill, where (A) is an oblique view, (B) is a front view, (C) is a central cross-sectional view, (D) is a left side view, and (E) is a right side view. [Figure 21] FIG. 21 is a diagram showing the individual configuration of the threaded rod, where (A) is a perspective view, (B) is a front view, and (C) is a central cross-sectional view. [Figure 22] Figure 22 shows the individual components of the rear shaft of the refill, where (A) is an oblique view, (B) is a front view, (C) is a central cross-sectional view, (D) is a left side view, and (E) is a right side view. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a rotary dispenser cosmetic tool according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[0019] The rotary dispenser cosmetic device according to the present invention will be described based on an embodiment using a refill loaded with a stick-shaped cosmetic material (solid core). Various types of stick-shaped cosmetic material can be used, including eyeliner, eyebrow pencil, and eyeshadow. In the drawings shown below, the same components are designated by the same reference numerals. However, in some drawings, for the sake of convenience, reference numerals are designated to representative components, and the details are described by referring to the reference numerals designated in the drawings showing each component individually.

[0020] <Rotating cosmetic tool> 1 and 2, the rotary dispensing cosmetic device 1 of this embodiment has an outer shell, a barrel 2, which is made up of a front barrel 3 and a rear barrel 4, and the front barrel 3 and the rear barrel 4 are linearly connected via a joint 5. A spout member 6 with an open tip is attached to the front end of the front barrel 3, and the tip 9a of a refill 9 loaded with a solid core 9b is configured to advance up to the tip opening 6a of the spout member 6.

[0021] Furthermore, dial knob 7 is attached to the rear end of rear barrel 4 so as to be rotatable relative to rear barrel 4, and refill 9 that advances to tip opening 6a can be selected by rotating dial knob 7. The base end of wire clip 8 is attached to the rear end of rear barrel 4 at the boundary between rear barrel 4 and dial knob 7.

[0022] 4, three refills 9 are housed in the barrel 2 so as to be parallel to the axis of the barrel 2. These three refills 9 are held axially movably in a guide tube 11 that is arranged axially rotatably on the rear end side of the rear barrel 4. That is, the guide tube 11 is formed with guide holes 11a into which the rear ends of the three refills 9 are inserted, and within these guide holes 11a, sliding pieces 12 are housed, as shown in FIGS. 2(B), 5, and 6.

[0023] The sliding top 12 is biased toward the inner bottom of the guide hole 11a by coil springs 13 arranged between the sliding top 12 and a spring receiver 14 attached to the front end of the guide tube 11. A small protrusion 12a formed to protrude from the front end of the sliding top 12 is fitted into a hole at the rear end of the refill 9, thereby holding the refill 9 by the sliding top 12 (see FIG. 2).

[0024] Therefore, when replacing the refill 9, as shown in Figure 4, the front axle 3 is pulled out from the axle coupling 5 to separate the front axle unit U1 from the rear axle unit U2, and in this state, the refill 9 to be replaced is pulled toward you. This causes the sliding top 12 to move forward within the guide tube 11, and with the coil spring 13 in its most compressed state, the small protrusion 12a of the sliding top 12 comes out of the hole at the rear end of the refill 9. When attaching a new refill 9, the new refill 9 is inserted into the guide tube 11, and the hole at the rear end of the refill 9 is fitted into the small protrusion 12a of the sliding top 12. This allows the new refill 9 to be held by the sliding top 12.

[0025] In this embodiment, when replacing the refill 9, the front axle unit U1 is pulled out from the rear axle unit U2 in the axial direction, as explained with reference to Figure 4. When attaching the front axle unit U1 to the rear axle unit U2, the front axle unit U1 is pushed axially toward the rear axle unit U2. This causes the front axle unit U1 to be axially fitted (so-called loose fit) to the shaft coupling 5 on the rear axle unit U2 side and attached.

[0026] 2, a shaft body 11c (described later) is formed on the rear end side of the guide tube 11, and the dial knob 7 is attached to the end of this shaft body 11c. Therefore, by rotating the dial knob 7, the guide tube 11 is rotated about its axis with the three refills 9 still attached.

[0027] As shown in Figures 2, 5, and 6, a cylindrical cam 15 is attached to the rear barrel 4 so as to surround the rear half of the guide tube 11. The detailed configuration of the cylindrical cam 15 will be described later with reference to Figures 13A and 13B, which show the cylindrical cam 15 as a single component. By rotating the dial knob 7, the guide tube 11 rotates, and as a result, the convex portion 12b (see Figures 2, 5, and 6) formed on the sliding top 12 rises along the cam slope 15b of the cylindrical cam 15, causing the sliding top 12 to move forward. Then, the tip portion 9a of the refill 9, to which the advancing sliding top 12 is attached, advances to the tip opening 6a of the spout member 6, as shown in Figures 1 and 2.

[0028] <Components that make up the rotary dispenser cosmetic device> Next, each of the components constituting the rotary advance cosmetic tool 1 will be described individually with reference to the drawings showing each component.

[0029] <Front axis> Figure 8 shows the structure of the front barrel 3. The front barrel 3 is preferably cylindrical and made of a metal material such as aluminum, with the front end cut at an angle to form a diagonally cut portion 3a, and the rear end cut and finished perpendicular to the axis. The outer cylindrical surface of the front barrel 3 has shallow grooves 3b cut along the axial direction, which are formed in a concentrated manner at several points around the axis. The front barrel 3 functions as a grip when the rotary dispenser cosmetic device 1 is held.

[0030] As shown in Figure 8(C), the rear inner periphery of front body 3 is provided with a slightly thickened portion 3c. This thick portion 3c functions as a stopper for a thin-walled pipe member 21 (see Figure 7) made of brass, for example, that is arranged along the inner periphery of front body 3. In other words, pipe member 21 is inserted from the side of diagonally cut portion 3a on the front end side of front body 3 and arranged inside front body 3, and is positioned by thick portion 3c that functions as a stopper.

[0031] <Nose tip part> 9A and 9B show the individual configuration of tip member 6. Tip member 6 is formed from a resin material such as ABS (acrylonitrile butadiene styrene) and is attached to the front end of front barrel 3. A circular tip opening 6a is formed at the front end of tip member 6, through which solid core 9b loaded in refill 9 protrudes (see FIG. 9B(G)). A cylindrical portion 6b is formed at the rear end of tip member 6, and tip member 6 is attached to front barrel 3 in a state where cylindrical portion 6b fits into pipe member 21 located within front barrel 3. Tip member 6 is also formed with a diagonal abutment portion 6c that abuts along diagonally cut portion 3a of front barrel 3, and the rear half of tip member 6, separated by diagonal abutment portion 6c, is housed within front barrel 3 and attached.

[0032] Furthermore, as shown in (D) of Figure 9A, the tip opening 6a formed at the tip of the tip member 6 is formed at a position eccentric from the axial center line of the barrel 2. That is, the axial center line L1 of the barrel 2 corresponds to the axis of the cylindrical portion 6b formed in the tip member 6, and the axis of the tip opening 6a of the tip member 6 is at the position indicated by the symbol L2. This is because the refill 9 advancing to the tip opening 6a of the tip member 6 is located at a position slightly away from the axial center line L1 of the barrel 2 (the position when the refill 9 moves furthest forward according to the shape of the cylindrical cam 15), and the position of the tip opening 6a is intentionally made eccentric to match this.

[0033] This allows the refill 9, whose tip portion 9a advances to the tip opening 6a, to be kept straight (linear) within the barrel 2. Therefore, the tip member 6 in this embodiment does not employ a commonly used conical tip member, and the cross-sectional shape of the tip member 6 perpendicular to the axial direction of the barrel 2 forms a non-circular shape.

[0034] Furthermore, the tip member 6 has a convex portion 6d that is curved in an arc from the cylindrical portion 6b toward the rear end, and is formed integrally with the cylindrical portion 6b. Three ribs 6e are formed along the axial direction on the arc-shaped inner peripheral surface of the convex portion 6d. The convex portion 6d forms an alignment mechanism in the axial direction with an alignment opening 5b formed in the shaft coupling 5, which will be described later. Furthermore, the three ribs 6e serve to prevent the shaft coupling 5 from being assembled in a state where part of the shaft coupling 5 rides up on the arc-shaped inner peripheral surface of the convex portion 6d formed on the tip member 6, when the shaft coupling 5 is abutted against the tip member 6 without being aligned in the axial direction.

[0035] Furthermore, as shown in (A) of Figure 9A, the tip member 6 is configured such that the rear end of the rotating body 6g is attached to the tip of the holding body 6f, and the holding body 6f holds the rotating body 6g rotatably around the axis L2 of the tip opening 6a (see (D) of Figure 9A) as the rotation axis.

[0036] FIG. 10 shows a central cross-sectional view of the holder 6f, and FIG. 11 shows the individual configuration of the rotor 6g. In FIG. 10, the inner peripheral surface of the holder 6f, which has a through-hole, near the tip is provided with a ring-shaped recess 6h whose diameter is gradually increased from the inner diameter of the tip periphery. Also, in FIG. 11, the rotor 6g is composed of a conical tapered portion 6i whose diameter gradually decreases toward the tip opening 6a and a cylindrical reduced-diameter portion 6j that connects to the tip side of the through-hole of the holder 6f. The outer peripheral surface of the reduced-diameter portion 6j is provided with a ring-shaped protrusion 6k that fits into the recess 6h. In this embodiment, the rear end (reduced-diameter portion 6j) of the rotor 6g is press-fitted into the tip of the holder 6f, and the protrusion 6k is fitted into the recess 6h to perform positioning. The tip member 6 is formed with the rotor 6g rotatably held by the holder 6f. That is, the recessed portion 6h and the protruding portion 6k are fitted together and come into sliding contact with each other, so that the rotating body 6g can rotate around the front axis L2 (see FIG. 9A(D)) ​​as the rotation axis.

[0037] 11, the inner peripheral surface near the tip of the rotor 6g functions as a guide portion 6l that guides the tip portion 9a of the refill 9 that advances to the tip opening 6a so that it can move back and forth in the sliding direction (axial direction). Furthermore, the guide portion 6l on the inner peripheral surface of the rotor 6g has four ribs 6m that are parallel to the axial direction and are equally spaced circumferentially. Although details will be described later, these ribs 6m are used to rotate the refill 9 about its axis when the tip portion 9a of the refill 9 advances to the tip opening 6a and the refill 9 is in sliding contact with the guide portion 6l.

[0038] <Rear axis> FIG. 12 shows the structure of the rear axle 4. The rear axle 4 is made of aluminum, for example, and is formed into a regular hexagonal tube by press molding. Its front end is open, and its rear end is formed by bending to form an end face 4a. A pair of notches 4b are formed axially from the end face 4a, and these notches 4b are used as insertion holes for the pair of base ends of the wire clips 8.

[0039] The center of the end face 4a is open, forming an insertion hole 4c for a male thread 16a or the like provided on a tail plug joint 16, which will be described later. A cylindrical cam 15, a guide tube 11, and a joint 5, which will be described later, are inserted in this order from the front end opening side of the rear axle 4, thereby forming the rear axle unit U2 shown in Figure 4. Each of these components will be described below in order.

[0040] <Cylindrical cam> 13A and 13B show the individual configuration of cylindrical cam 15. This cylindrical cam 15 is made of a resin material such as POM (polyacetal), and as shown in (A) of Fig. 13A, front half 15A is formed in a cylindrical shape to form a cam forming portion, and rear half 15B is formed with a small diameter to form an attachment hole and bearing hole for the cylindrical cam.

[0041] The front half 15A is formed with a cam flat 15a that is formed in an arc shape along the circumferential direction. Also, a pair of left and right cam inclined surfaces 15b are formed so as to be pointed forward from both ends of the cam flat 15a. Each of the pair of cam inclined surfaces 15b is formed in an arc shape that is symmetrical along the axial direction, and its tip is connected to both ends of a cam crest 15c that has a predetermined width.

[0042] Note that the cam top 15c is formed into a gentle concave shape to improve stability, as it is the portion that comes into contact with the convex portion 12b (see FIGS. 5 and 6) of the sliding piece 12 connected to the selected refill 9. In this embodiment, a pair of concave portions 15d is formed at the boundary between the cam flat portion 15a and the cam slope 15b, and these concave portions 15d are configured to accommodate the convex portions 12b of the sliding pieces 12 connected to the other two non-selected refills 9. Therefore, when the convex portions 12b of the sliding pieces 12 fit into the pair of concave portions 15d, a comfortable clicking sensation can be obtained.

[0043] The rear half 15B of the cylindrical cam 15 forms a small diameter portion 15e, and a pair of locking protrusions 15f are formed on this small diameter portion 15e, one above the other. A metal annular breech plug joint 16 (see FIG. 14) is attached using this small diameter portion 15e and locking protrusions 15f. This breech plug joint 16 is used to mechanically attach the cylindrical cam 15 and the base end of the wire clip 8 to the rear of the rear body 4.

[0044] As shown in (C) of Figure 13A, an axial hole 15g is formed within the small diameter portion 15e, and the shaft body 11c of the guide tube 11 is inserted into this axial hole 15g, thereby supporting the guide tube 11 in a rotatable manner.

[0045] Furthermore, four ribs 15h are formed parallel to each other along the axial direction on the cylindrical surface between the cam flat portion 15a and the small diameter portion 15e. When the cylindrical cam 15 is inserted and fixed into the rear axle 4, these ribs 15h come into contact with four internal corners of the rear axle 4, which is formed in the shape of a regular hexagonal cylinder, thereby restricting the movement (play) of the cylindrical cam 15 in the axial rotation direction relative to the rear axle 4.

[0046] FIG. 14 shows the state in which the cylindrical cam 15 is inserted and fixed into the rear axle 4. When inserting the cylindrical cam 15 into the rear axle 4, the tail plug joint 16 is inserted into the small diameter portion 15e of the cylindrical cam 15. A pair of locking protrusions 15f is formed on the small diameter portion 15e of the cylindrical cam 15. The tail plug joint 16 is attached to the small diameter portion 15e while being prevented from rotating by the pair of locking protrusions 15f. The cylindrical cam 15 is then inserted into the rear axle 4 so that the cam top 15c of the cylindrical cam 15 is inscribed on the back side of the surface 4d (see FIG. 14(C)) sandwiched between a pair of cutouts 4b formed on the rear axle 4, which is formed in the shape of a regular hexagonal cylinder. As shown in FIG. 14(B), the tail plug joint 16 is provided with a male thread 16a.

[0047] In the state shown in Figure 14, the left and right base ends of the U-shaped wire clip 8 are inserted into a pair of cutouts 4b formed in the rear axle 4, and the cylindrical cam 15 is then pushed toward the rear of the rear axle 4, causing the small diameter portion 15e of the cylindrical cam 15 and the male screw 16a of the tail plug joint 16 to protrude from the male screw insertion hole 4c of the rear axle 4.

[0048] In this state, the cylindrical cam 15 and wire clip 8 are attached to the rear of the rear axle 4 by screwing a ring-shaped tail plug 17 (see Figure 2) with a flange on its end surface into the male threads 16a of the tail plug joint 16 protruding from the rear of the rear axle 4. Note that Figure 3 is an enlarged cross-sectional view taken along line a-a' in Figure 2, seen in the direction of the arrow, and shows the attached state of the main parts, including the cylindrical cam 15 and wire clip 8, attached to the rear of the rear axle 4.

[0049] <Guide tube> 15 shows the individual configuration of guide tube 11. Although a portion of guide tube 11 has been explained above, the entire guide tube 11 is made of a transparent resin material such as PC (polycarbonate). Guide holes 11a, into which the rear ends of the three refills 9 are inserted, are formed in the front half at equal intervals around the axis and parallel to one another.

[0050] A slit 11b is formed in each guide hole 11a along the longitudinal direction of each guide hole 11a so as to communicate with the side surface of the guide tube 11. A protrusion 12b (see FIGS. 2, 5, and 6) of the sliding top 12 housed in the guide hole 11a is positioned facing outward in this slit 11b. The protrusion 12b of the sliding top 12 is configured to come into contact with the cam slope 15b of the cylindrical cam 15 and move within the guide hole 11a. This acts to move the staple-refill 9 forward.

[0051] In each guide hole 11a of the guide tube 11, a coil spring 13 is housed on the front side of the sliding piece 12, and the front end of each coil spring 13 is locked by a spring receiver 14 attached to the front end of the guide tube 11. As a result, a small protrusion 12a (see FIG. 2) formed so as to protrude from the front end of the sliding piece 12 is fitted onto the rear end of the refill 9, so that the refill 9 is held by the sliding piece 12, and each refill 9 is urged in the backward direction by the coil spring 13.

[0052] A small-diameter cylindrical shaft body 11c is formed in the rear half of the guide tube 11, and a short groove portion 11d is formed in the axial direction at the rear end of the shaft body 11c. In addition, a fitting portion 11e is formed along the groove portion 11d, with its outer diameter being uneven along the axial direction. The shaft body 11c is inscribed in a shaft hole 15g of a cylindrical cam 15 attached to the inside of the rear end of the rear barrel 4, and supports the guide tube 11 so that it can rotate around its axis. Furthermore, the groove portion 11d and the fitting portion 11e protrude from the rear barrel 4 and are used to attach the dial knob 7 when the rotary advance cosmetic device 1 is assembled.

[0053] <Shaft coupling> 16 shows the individual configuration of the shaft coupling 5. Like the tip member 6, this shaft coupling 5 is also made of a resin material such as ABS, and is attached to the front end of the rear axle 4. That is, after the cylindrical cam 15 and guide tube 11 are inserted into the rear axle 4, the shaft coupling 5 is finally attached to the front end of the rear axle 4.

[0054] This shaft coupling 5 is cylindrical overall, with a large diameter portion 5a formed in approximately the center in the longitudinal direction. The front half of this large diameter portion 5a (left side in Figure 16) is inserted into the rear end of front shaft 3, and is aligned in the axial rotation direction with tip member 6 inserted into the front end of front shaft 3. For this reason, a relatively wide alignment opening 5b is formed in the front end of shaft coupling 5, with part of the side of the cylinder cut out. A convex portion 6d of tip member 6 attached to the front end of front shaft 3 fits into this alignment opening 5b, and by aligning them with each other, alignment in the axial rotation direction is achieved between tip member 6 and shaft coupling 5.

[0055] A cylindrical portion 5c is formed between the wide alignment opening 5b and the large diameter portion 5a in the shaft coupling 5, and a narrow slit 5d is formed in part of the cylindrical portion 5c, continuing from the wide alignment opening 5b.

[0056] A fitting sleeve 22 (see FIGS. 4 and 7) made of a thin-walled metal material and formed into a cylindrical shape is attached to the cylindrical portion 5c, and the rear end of the front axle 3 that constitutes the front axle unit U1 is loosely fitted through this fitting sleeve 22, as shown in FIG. 4. For this reason, the fitting sleeve 22 is easily damaged and may need to be replaced. Therefore, the slit 5d formed in the cylindrical portion 5c is provided to make it easier to reduce the outer diameter of the cylindrical portion 5c when replacing the fitting sleeve 22.

[0057] The rear half of the shaft coupling 5 is formed with a fitting portion 5e for fitting to the rear axle 4, the outer surface of which is configured in the shape of a regular hexagonal prism. This fitting portion 5e is inserted and fitted into the front end opening of the rear axle 4, which is formed in the shape of a regular hexagonal cylinder, thereby attaching the shaft coupling 5 to the front end of the rear axle 4. When fitting the shaft coupling 5 to the rear axle 4, it is necessary to align the position of the alignment opening 5b formed in the shaft coupling 5 so that it is on the opposite side of the wire clip 8 that was previously attached to the rear axle 4, and then fit it.

[0058] By attaching the shaft coupling 5 to the rear shaft 4 after performing the above alignment, the convex portion 6d of the tip member 6 attached to the front end of the front shaft 3 fits into the alignment opening 5b formed in the shaft coupling 5, thereby enabling alignment in the axial rotation direction between the tip member 6 and the shaft coupling 5. As shown in Figure 4, this alignment is also performed when attaching the front shaft unit U1 to the rear shaft unit U2, and this allows the selected refill 9 to be advanced while maintaining a straight state to the tip opening 6a of the tip member 6, which is formed in a position eccentric to the axial centerline of the barrel.

[0059] When the shaft coupling 5 is attached to the rear axle 4, the guide tube 11 housed inside the rear axle 4 is pressed by the shaft coupling 5, causing the groove portion 11d and fitting portion 11e formed in the shaft body 11c to protrude to the rear of the rear axle 4. The dial knob 7 is attached to the rear end of the rear axle 4 by utilizing the groove portion 11d and fitting portion 11e formed in the shaft body 11c.

[0060] <Dial knob> Figure 17 shows the individual configuration of the dial knob 7. This dial knob 7 is formed with a knob portion 7a whose outer diameter decreases toward the rear end, and at the rear end, there are three painted recesses, i.e., marker recesses 7b, along the circumference. These marker recesses 7b are preferably painted in a color that corresponds to the color of the solid lead 9b loaded in the refill 9.

[0061] Meanwhile, an attachment hole 7c with an inner diameter that narrows in stages is formed at the axis of the dial knob 7, and at the deepest part of this attachment hole 7c, there is a fitting portion 7d with an inner diameter that is uneven along the axial direction, and a rib 7e that protrudes in the axial direction.

[0062] The dial knob 7 is attached by pushing the mounting hole 7c onto the shaft body 11c of the guide tube 11 protruding from the rear part of the rear axle 4. At this time, an O-ring 18 (see FIG. 2) is preferably attached to the small diameter portion 15e of the cylindrical cam 15 protruding from the rear part of the rear axle 4, and a ball 19 (see FIG. 2) is inserted into the mounting hole 7c of the dial knob 7.

[0063] Then, the rib 7e on the mounting hole 7c of the dial knob 7 is aligned with the groove 11d formed in the shaft body 11c of the guide tube 11, and in this state, the dial knob 7 is pushed toward the shaft body 11c. This push-in operation causes the concave-convex fitting portion 7d of the dial knob 7 to fit into and join with the concave-convex fitting portion 11e on the shaft body 11c. As a result, the guide tube 11 inside the rear axle 4 can be rotated as the dial knob 7 is rotated.

[0064] In addition, the rib 7e on the mounting hole 7c of the dial knob 7 is fitted to the groove 11d of the shaft 11c, so that the tip 9a of the refill 9 corresponding to the marker recess 7d located on the wire clip 8 side can be linked to move forward to the tip opening 6a of the tip member 6.

[0065] <Refill> Next, the operation and structure of propelling the solid core 9b from the tip 9a of the refill 9 when the tip 9a of the refill 9 has advanced to the tip opening 6a of the spout member 6 will be described.

[0066] For example, Fig. 18 is a diagram showing the appearance of a refill with a solid lead stored therein, and Fig. 19 is a diagram showing the appearance of the refill with the solid lead extended. In this embodiment, as shown in Figs. 18 and 19, refill 9 is constituted by a cylindrically formed front barrel 9c attached to a bottomed cylindrically formed rear barrel 9d so as to be rotatable relative to it.

[0067] Also housed within refill 9 is a threaded rod 9f with a piston 9e at its tip, and a solid core 9b is loaded into front barrel 9c in a state where it is in sliding contact with the inner circumferential surface. When solid core 9b does not protrude from front end 9a of refill 9, piston 9e is housed slidably in contact with the inner circumferential surface of the rear part of front barrel 9c (see FIG. 18(B)), and acts to move forward and backward in response to the axial rotation of front barrel 9c. Solid core 9b loaded within front barrel 9c is pushed by the advancing piston 9e and acts to be extended from front end 9a (see FIG. 19(B)).

[0068] Furthermore, threaded rod 9f advances or retreats within refill 9 due to the relative rotation of front barrel 9c with respect to rear barrel 9d. Specifically, as front barrel 9c rotates, front barrel 9c and threaded rod 9f, which are screwed together, act together; that is, a female thread 9g (see FIG. 20(c)) formed on the inner circumferential surface of the rear end of front barrel 9c acts together with a male thread 9h formed on most of the longitudinal direction of threaded rod 9f (see FIG. 21), causing threaded rod 9f to advance or retreat within the range of the thread of male thread 9h formed on threaded rod 9f. In this embodiment, when the tip portion of the thread of male thread 9h and female thread 9g are screwed together, the rear end of threaded rod 9f abuts against the bottom portion of rear barrel 9d (see FIG. 18(B)).

[0069] Figures 20, 21 and 22 respectively show the configuration of each of the individual members used in the staple-refill 9 shown in Figures 18 and 19. Below, the individual configurations will be described with reference to Figures 20 to 22.

[0070] Figure 20 shows the individual configuration of front barrel 9c of refill 9, which has a generally cylindrical shape overall. The rear of front barrel 9c is provided with a cylindrical reduced-diameter portion 9i that communicates with the tip opening of rear barrel 9d, and this reduced-diameter portion 9i is further provided with a ring-shaped protrusion 9j that is gradually enlarged in diameter from the periphery of the tip. This protrusion 9j is used for axial alignment when attaching rear barrel 9d. Furthermore, as mentioned above, a female thread 9g is formed on the inner peripheral surface of the rear of front barrel 9c, which threadably engages with the male thread 9h formed on threaded rod 9f.

[0071] Additionally, four ribs 9k, parallel to the axial direction and tapering in diameter at their longitudinal tips, are formed at equal circumferential intervals on the outer peripheral surface of the front portion of front barrel 9c. As tip end 9a of refill 9 advances to tip opening 6a, these four ribs 9k each enter between four ribs 6m formed on guide portion 6l on the inner peripheral surface of rotor 6g (see FIG. 2(C)). In this state, for example, if rear barrel 9d shown in FIGS. 18 and 19 is fixed and rotor 6g is rotated around axis L2 of tip opening 6a (see FIG. 9A(D)), the ribs 9k formed on front barrel 9c of refill 9 come into contact with ribs 6m of rotor 6g, causing front barrel 9c to rotate. Then, piston 9e of threaded rod 9f acts to advance and retreat in response to the rotation of front barrel 9c. The number of ribs 9k and ribs 6m is not limited to four, as long as there are a sufficient number of ribs to allow the front shaft 9c of the refill 9 to rotate in conjunction with the rotation of the rotating body 6g.

[0072] Figure 21 shows the individual configuration of threaded rod 9f. Threaded rod 9f is formed with male threads 9h that screw into female threads 9g formed on the inner circumferential surface of the rear portion of front barrel 9c, and has flat surfaces 9l formed along both sides in the longitudinal direction. Furthermore, a piston 9e is provided at the tip of threaded rod 9f to push out solid lead 9b loaded inside front barrel 9c.

[0073] 22 shows the individual configuration of rear shaft 9d of refill 9, which is formed in a cylindrical shape with a bottom, and a rectangular small protrusion 12a (see FIG. 2) formed so as to protrude from the front end of sliding top 12 is fitted into a rectangular opening formed at the rear end of rear shaft 9d. By fitting small protrusion 12a into the rear end opening of rear shaft 9d, rear shaft 9d of refill 9 is held and fixed by sliding top 12. In other words, movement of rear shaft 9d in the axial rotation direction is restricted.

[0074] Furthermore, the tip of rear barrel 9d is provided with an expanded diameter opening 9m that communicates with a cylindrical reduced diameter portion 9i provided at the rear of front barrel 9c, and the inner surface of this expanded diameter opening 9m is provided with a fitting portion 9n that fits into protrusion 9j of front barrel 9c. In the present embodiment, axial alignment is achieved by press-fitting reduced diameter portion 9i at the rear end of front barrel 9c into expanded diameter opening 9m at the tip of rear barrel 9d and fitting protrusion 9j into fitting portion 9n, and at this position front barrel 9c is rotatably connected to rear barrel 9d. In other words, by sliding contact between fitting portion 9n and protrusion 9j in a fitted state, front barrel 9c can rotate about front axis L2 (see FIG. 9A(D)) ​​as its rotation axis.

[0075] 18 and 19 show a state in which the solid core 9b is completely contained within the refill 9 and a state in which the solid core 9b has been advanced from the tip 9a of the refill 9, respectively. However, when the tip 9a of the refill 9 has advanced to the tip opening 6a of the tip member 6, as shown in FIG. 5, the rotor 6g is rotated left (or right) to advance the solid core 9b from the tip of the rotary advance cosmetic device 1. For example, when the rotor 6g is rotated left, the rib 9k formed on the front shaft 9c of the refill 9 comes into contact with the rib 6m of the rotor 6g (see FIGS. 2(C), 11, 18-20), and the front shaft 9c also rotates left. At this time, because the rear shaft 9d is held by the sliding top 12 (its movement in the axial rotation direction is restricted) (see FIG. 2(B)), the left rotation of the front shaft 9c acts to advance the threaded rod 9f screwed onto the front shaft 9c. As a result, solid lead 9b loaded in front barrel 9c is pushed by piston 9e of advancing screw rod 9f and is advanced from tip end 9a (see FIGS. 5, 18(B) and 19(B)).

[0076] <Solid core> Next, the solid core 9b used in this embodiment will be described in detail. The solid core 9b (sometimes called a solid stick-shaped cosmetic core) of this embodiment is characterized by containing a resin within the pores of the porous core body, which allows it to exhibit excellent bending strength and resistance to drop impacts without impairing ease of application to the skin, and is suitable for use in eyeliner, eyebrow pencils, eyeshadow, etc.

[0077] The solid stick-type cosmetic core of this embodiment may be produced by any method, as long as it contains a resin within the pores of the porous core. For example, it can be produced by 1) blending and molding components such as a filler, binder component, and organic solvent, followed by a non-baking treatment (drying) to remove the organic solvent, thereby obtaining a porous stick-type cosmetic core, and then impregnating the pores of this porous core with a resin (hereinafter, this form will be referred to as a "non-baking-type solid stick-type cosmetic core"); or 2) using a blended composition containing an appropriately selected blend of components such as at least a filler, binder component, and organic solvent, and baking this under an inert gas atmosphere, etc., to obtain a porous stick-type cosmetic core, and then impregnating the pores of this porous core with a resin (hereinafter, this form will be referred to as a "baked-type solid stick-type cosmetic core").

[0078] Usable non-calcined and calcined fillers include white and colored fillers such as boron nitride, kaolin (kaolinite, halloysite), talc, mica, and calcium carbonate, and of course mixtures of several of these can also be used. Boron nitride, kaolin, and talc are particularly preferred due to their physical properties and shape.

[0079] Examples of the non-calcined or calcined binder components that can be used include celluloses such as carboxymethyl cellulose, inorganic polymers such as tetraethyl orthosilicate (TEOS) condensates, clays such as montmorillonite, bentonite, and pyrophyllite, and ceramic binders such as ceramic glass. These can be used alone or in combination of two or more.

[0080] Examples of ceramic binders include silicon nitride, silicon oxide, boron oxide, aluminum oxide, layered silicate minerals, and fired products thereof.

[0081] Examples of sintered types include porous cores such as 1) sintered ceramic cores made by blending at least boron nitride and a ceramic binder, 2) sintered cores made by blending at least graphite, 3) sintered cores made by blending at least boron nitride and a layered silicate mineral, and 4) sintered cores made by blending at least talc and a layered silicate mineral.

[0082] Examples of non-sintered cores include: a) non-sintered ceramic cores formed by blending at least a ceramic binder, b) non-sintered cores formed by blending at least talc and carboxymethyl cellulose, c) non-sintered ceramic cores formed by blending at least boron nitride and boron oxide, and d) non-sintered ceramic cores formed by blending at least boron nitride and silicon oxide. Furthermore, porous cores can be produced by blending 50 to 80% by mass of the filler, 1 to 10% by mass of a binder, an organic solvent (including water), and other components, kneading, molding, drying, and non-sintering (low-temperature drying at 50 to 120°C) the components (filler, binder, organic solvent, etc.) to remove the organic solvent and other components to obtain a porous core, impregnating the pores of the porous core with a resin (described below) using alcohol, etc., removing the impregnated alcohol, and then filling with a lubricating oil.

[0083] In addition, in the case of baked types, components such as 50 to 80% by mass of the above-mentioned filler, 1 to 10% by mass of a binder component, and an organic solvent (including water) are blended to produce non-baked cores such as those described in 1) to 4) above. Specifically, depending on the type of materials used, the components (filler, binder component, organic solvent, water, etc.) used for baked cosmetic cores of, for example, pencil-shaped, holder-type, or advancing types are kneaded in a mixer or the like, molded, dried, and baked in a non-oxidizing atmosphere and / or in the air to obtain various porous cores. The pores of the porous cores are then impregnated with a resin described below using an alcohol or the like, the impregnated alcohol is removed, and preferably, a lubricating oil is further filled in to produce the cores.

[0084] Resins that can be used in the non-baked and baked types are preferably resins that are soluble in alcohol and have low solution viscosity, and examples thereof include at least one of acrylic resins, polysaccharides, silicone resins, and silicone acrylic resins.

[0085] Examples of acrylic resins that can be used include at least one of alkyl acrylate copolymer emulsion, acrylic-styrene copolymer emulsion, acrylic-styrene copolymer solution, etc. Specific examples include alkyl acrylate copolymer emulsions IODOSOL GH800 (glass transition point: -15°C, solid content: 45%, manufactured by Akzo Nobel) and IODOSOL GH810F (glass transition point: 10°C, solid content: 46%, manufactured by Akzo Nobel), and alkyl acrylate copolymer emulsion COVACRYL MS11 (glass transition point: 0°C, solid content: 57%, manufactured by SENSIENT).

[0086] Examples of polysaccharides include tragacanth gum, guar gum, pullulan resin, cyclodextrin, water-soluble cellulose derivatives, etc. Silicone-modified versions of these polysaccharides can also be used.

[0087] As the silicone resin, for example, trimethylsiloxysilicate (for example, trade names: KF7312J, KF7312T, X-21-5250, all manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

[0088] Furthermore, examples of the "combination" of the acrylic resin and the silicone resin, i.e., the silicone acrylic resin, include at least one of (acrylates / behenyl acrylate / dimethicone methacrylate) copolymer, (acrylates / stearyl acrylate / dimethicone methacrylate) copolymer, and (acrylates / ethylhexyl acrylate / dimethicone methacrylate) copolymer.

[0089] The alcohol that can be used when impregnating the pores of the porous core with the resin is preferably one that can dissolve the resin, and examples thereof include ethanol, decane, isodecane, dimethyl silicone oil, isododecane, and cyclopentasiloxane.

[0090] Examples of lubricating oils that can be used include paraffin oil, α-olefin oil, fatty acid ester, ester oils such as alkylene glycol ether, synthetic oils such as silicone oil, vegetable oils such as castor oil, grease, wax, etc. Ester oils and silicone oils are particularly preferred. Specific examples include commercially available dimethicones such as KF-96 manufactured by Shin-Etsu Chemical Co., Ltd., IPIS, an ester oil manufactured by Nikko Chemicals Co., Ltd., and Salacos 5418V and Cosmol 43V, an ester oil manufactured by Nisshin Olayo Co., Ltd.

[0091] The total (total) volume (vol %) of the pores in the porous core of the non-baked or baked solid stick cosmetic core obtained varies depending on the types of ingredients, manufacturing method, and use of the solid stick cosmetic core, but is approximately 10 to 25% by volume of the total porous core.

[0092] In the solid stick-type cosmetic core of this embodiment, which is configured as described above, the pores of the non-baked or baked porous core are impregnated with a resin, thereby causing a resin with excellent toughness to be fixed within the pores of the porous core, thereby improving the bending strength of the solid stick-type cosmetic core and increasing the allowable breaking strain, thereby obtaining a solid stick-type cosmetic core that is suitable for eyeliner, eyebrow pencil, etc., which exhibits excellent resistance to drop impact. In particular, the use of a silicone resin allows the core to exhibit excellent bending strength and resistance to drop impact without impairing ease of application to the skin.

[0093] <Effects, etc.> According to the rotary dispensing cosmetic device 1 configured as described above, rotating the dial knob 7 rotates the guide tube 11 inside the barrel 2, and as the guide tube 11 rotates, the sliding top 12 moves forward along the cam slope 15b of the cylindrical cam 15 fixed inside the barrel 2. As a result, the tip 9a of the refill 9 connected to the sliding top 12 moves forward to the tip opening 6a of the spout member 6. Then, by further rotating the dial knob 7, the refill 9 moves backward under the biasing force of the spring 13, and the newly selected adjacent refill 9 moves forward in the same manner as above.

[0094] In this case, the tip opening 6a of the spout member 6 is formed at a position eccentric to the axial centerline of the barrel 2, so that the refill 9, whose tip 9a advances to the tip opening 6a, can maintain a substantially linear state (straight state) within the barrel 2. This solves the problem of the refill protruding at a bent position relative to the axial center of the barrel, which is an unattractive appearance in conventional rotary-type cosmetic devices. In addition, because the tip opening 6a of the spout member 6 is formed at a position eccentric to the axial centerline of the barrel 2, the solid lead 9b dispensed from the tip 9a of the refill 9 is easy to see and easy to apply.

[0095] In addition, the tip member 6 of this embodiment is configured such that a rotor 6g whose diameter gradually decreases toward the tip opening 6a is attached to a holder 6f, and the holder 6f holds the rotor 6g so that it can rotate around its axis. Furthermore, the inner peripheral surface of the rotor 6g functions as a guide portion 6l that guides the tip end 9a of the refill 9 so that it can move back and forth in the axial direction, and the guide portion 6l is formed with a rib 6e that is parallel to the axial direction.

[0096] Furthermore, refill 9 has a cylindrical front barrel 9c rotatably attached to a bottomed cylindrical rear barrel 9d. Refill 9 further houses a threaded rod 9f with a piston 9e at its tip, and front barrel 9c is loaded with a solid core 9b, and has a rib 9k formed on the outer peripheral surface of the front part thereof that is parallel to the axial direction.

[0097] Then, as rotor 6g rotates, rib 6e comes into contact with rib 9k, rotating front barrel 9c, and piston 9e of threaded rod 9f moves forward and backward in response to the rotation of front barrel 9c, pushing solid lead 9b loaded in front barrel 9c out from tip 9a of refill 9. Therefore, in this embodiment, as described above, refill 9 can maintain a straight state within barrel tube 2, and solid lead 9 can be advanced from tip 9a of refill 9 without bending, flexing, elastic deformation, impact, or the like.

[0098] In addition, the cylindrical cam 15 that advances the refill 9 is provided with a pair of left and right cam inclined surfaces 15b formed so as to be pointed forward, so that the refill 9 can be advanced regardless of whether the dial knob 7 is rotated left or right. Therefore, in this type of rotary-type cosmetic device in which three or more refills 9 are housed in the barrel, it is possible to provide a rotary-type cosmetic device that has the effects described in the "Effects of the Invention" section, such as making it possible to quickly select the refill 9 that is needed.

[0099] In this embodiment, the alignment mechanism in the axial rotation direction formed between the shaft coupling 5 side and the tip member 6 side has an alignment opening 5b formed on the shaft coupling 5 side, and a convex portion 6d formed on the tip member 6 side to be inserted into the alignment opening 5b. However, an alignment mechanism with similar effects can be realized even if the alignment openings 5b and the convex portion 6d are alternately switched, and a mechanism equivalent to the alignment opening 5b is provided on the tip member 6 side, and a mechanism equivalent to the convex portion 6d is provided on the shaft coupling 5 side.

[0100] In addition, in this embodiment, as an example, a case has been described in which three refills 9 are housed in the barrel 2, but this is not limited to this, and it is also possible to house two refills 9 in the barrel 2 and selectively move them forward. [Explanation of symbols]

[0101] 1 Rotating cosmetic tool 2 shaft cylinder 3 Front axle 3a Diagonal cut section 3b Cutting groove 3c Thick part 4 Rear axle 4a End face 4b Notch 4c Insertion hole 4d plane 5 Shaft Coupling 5a Large diameter part 5b Alignment opening 5c Cylindrical part 5d slit 5e Mating part 6 Tip member 6a Tip opening 6b Cylindrical part 6c Contact part 6d convex part 6e Rib 6f Holder 6g rotating body 6h recess 6i Tapered section 6j Reduced diameter part 6k convex part 6l Guide section 6m rib 7 Dial knob 7a Knob 7b Marker recess 7c mounting hole 7d Mating part 7e Rib 8 wire clips 9 Refills 9a Tip 9b solid core 9c tip axis 9d rear axle 9e Piston 9f threaded rod 9g female thread 9h male thread 9i Reduced diameter part 9j convex part 9k Rib 9l flat part 9m wide opening 9n Mating part 11 Guide tube 11a Guide hole 11b Slit 11c shaft body 11d Groove 11e Mating part 12 Sliding frame 12a small protrusion 12b Convex part 13 Coil spring 14 Spring holder 15 Cylindrical cam 15A first half 15B second half 15a Cam flat part 15b Cam slope 15c Cam top 15d recess 15e Small diameter section 15f Locking protrusion 15g shaft hole 15h Rib 16 Tail plug joint 16a male thread 17 tail plug 18 O-ring 19 balls 21 Pipe members 22 Mating sleeve L1 axis center line L2 axis U1 Front axle unit U2 rear axle unit

Claims

1. A rotary cosmetic device in which two or more refills are accommodated in a barrel, A refill loaded with a stick-shaped cosmetic material is supported by a guide tube so as to be movable in the axial direction of the barrel tube, The tip of one refill selected by the relative rotation operation of the guide tube with respect to the barrel tube is advanced to a tip opening provided in a tip member of the barrel tube by a cylindrical cam fixed in the barrel tube, By forming the tip opening of the tip member at a position eccentric from the axial center line of the barrel, the refill maintains a straight state when the tip advances to the tip opening, A dial knob is attached to the rear end of the barrel so as to be rotatable relative to the barrel, and the dial knob is attached to the guide barrel, and the guide barrel rotates about its axis by rotating the dial knob, Furthermore, a pair of notches are formed at the rear end of the barrel along the axial direction of the barrel, and a pair of base ends of a clip are attached to the notches at the boundary between the rear end of the barrel and the dial knob. A rotary dispenser cosmetic tool characterized by the above.

2. The barrel is composed of a front barrel and a rear barrel, the tip member is attached to the front end of the front barrel, and the rear barrel is connected to the front barrel via a shaft coupling to form the barrel, The tip member has a convex portion formed along the axial direction, and the shaft coupling has a positioning opening into which the convex portion is inserted in the axial direction, In the front shaft, the convex portion is inserted into the alignment opening, thereby forming a shaft rotation direction alignment mechanism between the tip member and the shaft coupling. The rotary cosmetic tool according to claim 1 .

3. The tip member is A rotating body is attached to the holder, the diameter of which gradually decreases toward the tip opening, and the holder holds the rotating body so that it can rotate about its axis. Furthermore, the inner circumferential surface of the rotating body functions as a guide portion that guides the tip of the refill so that it can move forward and backward in the axial direction, and a first rib is formed on the guide portion in parallel with the axial direction. The refill is The front barrel formed in a cylindrical shape is attached to the rear barrel formed in a cylindrical shape with a bottom so as to be axially rotatable, Furthermore, the refill contains a threaded rod with a piston at its tip, the front barrel is loaded with a stick-shaped cosmetic material, and a second rib is formed on the outer peripheral surface of the front part, which is parallel to the axial direction; In response to the rotation of the rotor, the first rib and the second rib come into contact with each other, causing the front barrel to rotate, and the piston of the threaded rod acts to advance and retreat in response to the rotation of the front barrel, and the stick-shaped cosmetic material loaded in the front barrel is pushed by the advancing piston and is dispensed from the tip of the refill, A sliding top is connected to the rear end of the refill, which slides against the cylindrical cam and moves the refill in the axial direction of the barrel. The cylindrical cam fixed in the shaft cylinder is a cam flat portion formed in an arc shape along the circumferential direction; a pair of left and right cam slopes formed so as to be pointed forward from both ends of the cam flat portion; a cam top portion having a predetermined width where the tips of the pair of cam slopes are connected; and When the sliding piece connected to the refill abuts against the cam top, the tip of the refill advances to the tip opening of the tip member, and in this state, the sliding piece connected to the other refill is positioned on the cam flat portion. The rotary cosmetic tool according to claim 1 or 2.

Images