WO2025005234A1 - Rotary dispensing container - Google Patents

Abstract

Provided is a rotary dispending container capable of preventing breakage of a solid core accommodated in a shaft cylinder due to an impact applied to the shaft cylinder. The rotary dispensing container is configured so as to comprise: a screw rod 9 that advances or retracts in a shaft cylinder 3 through the relative rotation of a front shaft 1 and a rear shaft 2; and a solid core 5 that moves in the axial direction in the front shaft depending on an advancing or retracting operation of the screw rod. The solid core is accommodated in a cylindrical holder 6, and a tip part of the holder is provided with a holder guide 7 having a plurality of projections 7b extending forward in the axial direction. Selection is made between a usable state in which the solid core is projected from the front shaft as the screw rod is advanced, and an accommodation state in which the solid core is retracted together with the holder and accommodated in the front shaft as the screw rod is retracted. In the accommodation state, a tip part of the solid core projecting from the holder is supported by the plurality of projections provided to the holder guide.

Description

Rotating dispenser

This invention relates to a rotary dispenser container for use as a stick-shaped cosmetic container, writing implement, applicator, etc., which dispenses stick-shaped members such as stick-shaped cosmetics, stick-shaped writing implements, and stick-shaped applicators from the container.

2. Description of the Related Art Various types of cosmetic implements are available in which, for example, a stick-shaped cosmetic material is stored in a rotary dispenser container and a required amount of the stick-shaped cosmetic material is dispensed from a front end for use.
Among these, in the case of solid-tip eyeliners for applying cosmetics to eyebrows and the like, those in which the cross section perpendicular to the axial direction of the solid tip is elliptical or oval have been proposed.
By changing the orientation of the solid core, the thickness of the line of cosmetic applied at one time can be selected according to preference.

Rotary dispensing containers accommodating solid-core eyeliners having an elliptical or oval cross-sectional shape are disclosed in Patent Documents 1 and 2.
However, in the rotary dispensing containers disclosed in Patent Documents 1 and 2, the solid lead is configured to be dispensed in one direction, and therefore it is impossible to return the solid lead dispensed from the front end of the barrel by the dispensing operation back into the barrel.

In view of this, the applicant has proposed a rotary dispenser capable of returning the dispensed solid lead into the barrel, which is disclosed in Patent Document 3.
The rotary dispenser container disclosed in Patent Document 3 is provided with a threaded rod that moves forward or backward by rotating the rear barrel relative to the front barrel, and as the threaded rod moves forward, the solid lead is pushed by the threaded rod and dispensed from the front barrel.
Furthermore, as the threaded rod retracts, the front end of the threaded rod pulls the holder which covers the outside of the solid lead, and the solid lead is returned together with the holder into the front barrel.

JP 2016-220916 A JP 2016-220917 A JP 2021-90729 A

However, many of the solid cores housed in this type of rotary dispenser container contain volatile components, and even the above-mentioned solid-core eyeliners have the problem that the solid core hardens due to the evaporation of solvents and the like, resulting in a decrease in functionality.
Therefore, as a measure to suppress evaporation of the solid core contained in the rotary dispensing container, it is effective to cover the outside of the solid core with a cylindrical holder, as described in Patent Document 3.

However, to return the drawn-out solid lead back into the front barrel, the solid lead must be returned together with the holder into the front barrel with a specified length of solid lead drawn out from the front end of the cylindrical holder. As a result, the tip of the solid lead protruding from the holder is left floating without being supported within the front barrel, and if the barrel is subjected to an impact in this state, such as being dropped, the tip of the solid lead protruding from the holder will be broken by the impact, causing a problem.

This invention was made in consideration of the above-mentioned circumstances, and its main objective is to provide a rotary dispenser that can effectively prevent the breakage of the solid core contained within the barrel due to impacts applied to the barrel.

The rotary dispensing container of the present invention, which has been made to solve the above-mentioned problems, is a rotary dispensing container comprising a barrel in which a front barrel and a rear barrel are configured to be rotatable relative to one another, a threaded rod disposed at the rear of the barrel and adapted to move forward or backward within the barrel in response to the relative rotation of the front barrel and the rear barrel, and a rod-shaped member (solid core) disposed at the front of the barrel and adapted to move axially within the front barrel depending on the forward or backward movement of the threaded rod, the rod-shaped member being housed within a holder which covers the outer periphery of the rod-shaped member, the tip of the holder having a number of protrusions which extend axially forward, and A holder guide is provided with protrusions arranged in the circumferential direction, and multiple guide grooves are formed along the inner circumferential surface of the tip barrel, extending in the axial direction and into which the protrusions of the holder guide enter to slide the protrusions in the axial direction. When the rod-shaped member protrudes from the tip barrel as the threaded rod advances, and when the rod-shaped member retracts together with the holder as the threaded rod retracts and is housed within the tip barrel, the tip of the rod-shaped member protruding from the holder is supported by the multiple protrusions provided on the holder guide.

In this case, in a preferred embodiment, the rear axle is rotatably attached to the center axle attached to the front axle, so that the front and rear axles are configured to be rotatable relative to one another, and a male thread formed on the threaded rod is screwed into a female thread formed on the center axle, and the threaded rod is formed with a flange portion that is axially movable within the rear axle and rotates the threaded rod in the same direction as the rear axle rotates.

Furthermore, it is desirable that a rib protruding in the axial direction is formed within the rear axle along the axial direction, a flange formed on the threaded rod is movable in the axial direction along the rib, and a portion of the flange abuts against the rib when the rear axle rotates, so that the threaded rod rotates in the same direction as the rear axle rotates.

Furthermore, a large diameter section with an axial hole is formed at the front end of the threaded rod via a straight-shaped shaft body, and the large diameter section is configured so that as the threaded rod advances, it causes the rod-shaped member to protrude from the front shaft, and as the threaded rod retreats, it comes into contact with the inside of the holder, performing a pulling action that causes the holder to retreat together with the rod-shaped member.

According to the rotary dispensing container of the present invention, the solid lead as a rod-shaped member is housed within the holder and is arranged so as to be able to protrude and retract from the front barrel as the threaded rod moves forward and backward.
The tip of the holder is provided with a holder guide having multiple protrusions extending axially forward and arranged along the circumferential direction, so that when the rod-shaped member retracts together with the holder and is housed in the front barrel, the tip of the rod-shaped member protruding from the holder is supported by the multiple protrusions provided on the holder guide. This makes it possible to provide a rotary dispensing container that can effectively prevent breakage of the solid lead as a rod-shaped member housed in the barrel, even if it is subjected to an impact due to, for example, being dropped.
Other operational effects of the rotary dispensing container according to the present invention will be described as they arise in the section of the Detailed Description of the Invention below.

1 is a perspective view of a rotary dispensing container according to a first embodiment of the present invention with the cap removed; 1A and 1B show a rotary dispensing container according to a first embodiment without the cap, in which (A) is an external view and (B) is a cross-sectional view taken along the axial direction. 2B is a cross-sectional view taken along the axial direction of the rotary dispensing container, the cross-section being shown in FIG. 2A rotated by 90 degrees relative to FIG. 2A. FIG. FIG. 2 is an enlarged perspective view of the vicinity of the tip of the rotary dispensing container in the first embodiment, with a portion of the front barrel broken away. 1A and 1B show a single-item configuration of a front barrel according to a first embodiment, in which FIG. 1A is a perspective view with the tip end side facing forward, and FIG. 1 shows the individual configuration of the front barrel in the first embodiment, with (A) being a top view, (B) being a longitudinal cross-sectional view along the axial direction in (A), (C) being a front view, (D) being a longitudinal cross-sectional view along the axial direction in (C), (E) being a left side view, and (F) being a right side view. 1 shows the individual configuration of the holder in the first embodiment, where (A) is a top view, (B) is a longitudinal cross-sectional view along the axial direction in (A), (C) is a front view, and (D) is a longitudinal cross-sectional view along the axial direction in (C). This shows the state in which a holder guide is attached to the front end of the holder in the first embodiment, where (A) is a top view, (B) is a longitudinal cross-sectional view along the axial direction of (A), (C) is a front view, and (D) is a longitudinal cross-sectional view along the axial direction of (C). 1A and 1B show a state before the holder guide is attached to the holder according to the first embodiment, in which FIG. 1A is a perspective view with the holder guide side facing forward, and FIG. 1A and 1B show a state in which a holder guide is attached to a holder according to a first embodiment, in which FIG. 1A is a perspective view with the holder guide side facing forward, and FIG. 1 shows the individual configuration of the holder guide of the first embodiment, with (A) being an oblique view with the tip end side facing forward, (B) being an oblique view with the rear end side facing forward, (C) being a top view, (D) being a longitudinal cross-sectional view along the axial direction of (C), (E) being a front view, (F) being a longitudinal cross-sectional view along the axial direction of (E), (G) being a left side view, and (H) being a right side view. 1A shows a single-item configuration of a center shaft according to a first embodiment, in which (A) is an oblique view with the tip end side facing forward, (B) is an oblique view with the rear end side facing forward, (C) is a top view, and (D) is a cross-sectional view along the axial direction. 1A shows a single component configuration of a threaded rod according to a first embodiment, in which (A) is an oblique view with the tip side facing forward, (B) is a front view, (C) is a top view, and (D) is a cross-sectional view along the axial direction. 1A shows a single component configuration of a screw body according to a first embodiment, in which (A) is an oblique view with the tip end side facing forward, (B) is an oblique view with the rear end side facing forward, (C) is a front view, and (D) is a cross-sectional view along the axial direction. 1 shows the single-item configuration of a rear body according to a first embodiment, in which (A) is a cross-sectional view taken along the axial direction, and (B) is a cross-sectional view taken along line J-J in (A) as viewed in the direction of the arrows. FIG. 10A and 10B show a rotary dispensing container according to a second embodiment without the cap, in which (A) is an external view and (B) is a cross-sectional view taken along the axial direction. 12B is a cross-sectional view taken along the axial direction of the rotary dispensing container, the cross-section being shown in FIG. 12A rotated by 90 degrees relative to FIG. 12A. FIG. 11 shows the individual configuration of the front barrel in the second embodiment, with (A) being a top view, (B) being a longitudinal cross-sectional view along the axial direction in (A), (C) being a front view, (D) being a longitudinal cross-sectional view along the axial direction in (C), (E) being a left side view, and (F) being a right side view. 10A shows a single-item configuration of a center shaft according to a second embodiment, in which (A) is an oblique view with the tip end side facing forward, (B) is an oblique view with the rear end side facing forward, (C) is a top view, and (D) is a cross-sectional view along the axial direction. 10A shows a single component configuration of a threaded rod according to a second embodiment, in which (A) is an oblique view with the tip side facing forward, (B) is a front view, (C) is a top view, (D) is a cross-sectional view along the axial direction, and (E) is a right side view. 10 shows the single-item configuration of a rear axle according to a second embodiment, in which (A) is a front view, (B) is a cross-sectional view along the axial direction, (C) is a left side view, and (D) is a cross-sectional view taken along the K-K line shown in (B) as viewed in the direction of the arrow.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary dispensing container according to the present invention will be described based on an embodiment of a cosmetic tool that uses a solid-core eyeliner as the rod-shaped member contained within the container.
In the drawings shown below, the same parts are indicated by the same symbols, but in some drawings, due to space limitations, symbols are assigned to representative parts, and details are explained by quoting the symbols assigned to each drawing showing the individual component configuration.

First, a first embodiment of a rotary dispensing container according to the present invention will be described with reference to FIGS.
As shown in FIG. 1, the rotary dispensing container of the first embodiment according to the present invention comprises a barrel tube 3 in which a rear barrel 2 formed in a cylindrical shape with a bottom is attached to a front barrel 1 so as to be rotatable relative to the front barrel 1.
In front barrel 1, following cylindrical portion 1a, a small diameter portion 1b is formed whose diameter decreases toward the front, and an opening 1c is provided at the tip of small diameter portion 1b, through which a solid core 5 as a rod-shaped member described later appears and disappears.
Cap 4, which is formed in a bottomed cylindrical shape so as to cover small diameter portion 1b of front barrel 1, is attached in the axial direction by abutting its open end against cap attachment step 1d provided on front barrel 1. As a result, the appearance of the rotary dispensing container with cap 4 attached is configured to form an elongated cylindrical body with a roughly uniform diameter in the longitudinal direction.

2A and 2B show an external view and a cross-sectional view of the rotary dispensing container with cap 4 removed, with solid core eyeliner 5 (hereinafter sometimes simply referred to as solid core 5) as a rod-shaped member contained within front barrel 1. Note that this solid core 5 is contained within holder 6 which covers its outer periphery, and holder 6 is disposed with cylindrical base end 7a of holder guide 7 attached to the front end thereof in contact with the inside of front barrel 1.
A piston 8 is housed in the rear end of the holder 6, which is in contact with the inner surface of the holder 6 and can slide in the axial direction of the holder 6. This piston 8 is pushed by a threaded rod 9, and acts to advance the solid core 5 in the holder 6 from the front end opening 1c of the front barrel 1.
In addition, the piston 8 also functions as a sealing member to prevent the rear side of the solid core 5 from coming into contact with the air and volatilizing the solvent. This prevents the last remaining part of the solid core 5 from hardening, which can lead to a decrease in functionality.

The threaded rod 9 is disposed to the rear of the solid lead 5 and piston 8, and this threaded rod 9 moves forward or backward within the barrel tube 3 due to the relative rotation of the rear barrel 2 with respect to the front barrel 1. The forward or backward movement of this threaded rod 9 is effected by a threaded body 11 disposed within the rear barrel 2 and a center shaft 12 that is press-fitted into the rear end of the front barrel 1. The forward or backward action of the threaded rod 9 will be described in more detail in the explanation of the individual components of the threaded body 11 and center shaft 12 described below.
In this embodiment, the small diameter portion 1b, opening 1c, solid lead 5, holder 6, holder guide 7, piston 8 and the front half of threaded rod 9 in the front barrel 1 each have an elliptical cross section perpendicular to the axial direction.

An annular elastic member (O-ring) 13 is attached along the outer periphery of the front end of the threaded rod 9, and when the threaded rod 9 moves forward, this O-ring 13 slides against the inner surface of the holder 6 and moves forward within the holder 6, and also acts to push the solid core 5 forward from the holder 6 via the piston 8 at the tip of the threaded rod 9.
Furthermore, when the threaded rod 9 moves backward, the O-ring 13 is in pressure contact with the inner surface of the holder 6 and operates to move the solid lead 5 backward together with the holder 6 within the front barrel 1 .

FIG. 3 shows a partially cutaway view of small diameter portion 1b of front barrel 1 of the rotary dispensing container.
As described above, the holder guide 7 is attached to the tip of the holder 6 which covers the outer circumference of the solid core 5, and this holder guide 7 has multiple (four in this example) protrusions 7b extending axially forward from a cylindrical base end 7a, each of which is arranged along the circumferential direction of the base end 7a.
Meanwhile, on the inner circumferential surface of small diameter portion 1b of front barrel 1, a plurality of guide grooves 1e (four in this example, the same number as protrusions 7b) are intermittently formed along the inner circumferential surface on the tip side of front barrel 1, extending in the axial direction and allowing each of the protrusions 7b of holder guide 7 to enter and slide each of the protrusions 7b in the axial direction.

FIGS. 4A to 11 show the respective parts used in the rotary dispensing container shown in FIGS. 1 to 3, either individually or in pairs of two parts. The configuration of each of the parts will be described below with reference to FIGS. 4A to 11.
4A and 4B show the individual configuration of the front barrel 1, which, as explained above, has a cylindrical section 1a at the rear end, and a small diameter section 1b with an elliptical cross section perpendicular to the axis formed in front of the cylindrical section 1a. An opening 1c is formed at the tip of the small diameter section 1b to support the solid core 5 so that it can be retracted, and a cap mounting step 1d is formed between the cylindrical section 1a and the small diameter section 1b.

4B, a step 1f is formed so that the inner diameter of the small diameter portion 1b decreases from the inner surface toward the opening 1c. The base end 7a of the holder guide 7 attached to the front end of the holder 6 is engaged with this step 1f, and the step 1f functions as a stopper that prevents the holder 6 from moving forward. Therefore, hereinafter, the step 1f will be referred to as a stopper.
Furthermore, a plurality of guide grooves 1e are provided from the stopper 1f toward the tip opening 1c, which receive the respective projections 7b of the holder guide 7 and support the holder 6 together therewith so as to be movable in the axial direction.

An annular projection 1g is formed on the inner surface of the rear end opening of the cylindrical portion 1a, and this projection 1g is used as a fitting portion when a center shaft 12, which will be described later, is attached by press fitting.
In addition, four long and short ribs 1h are formed at equal intervals along the axial direction on the inner peripheral surface of the cylindrical portion 1a adjacent to the annular protrusion 1g. These long and short ribs 1h are used for axial alignment when the center shaft 12 is press-fitted into the cylindrical portion 1a.

Fig. 5A shows the individual configuration of holder 6 housed in front barrel 1, and Fig. 5B shows the state in which holder guide 7 is attached to the tip of holder 6. Also, Fig. 6A and Fig. 6B are perspective views showing the state before and after holder guide 7 is attached to the tip of holder 6, respectively.
As already explained, this holder 6 has an elliptical cross-sectional shape in a direction perpendicular to the axis, and a solid core storage section 6a capable of storing a rod-shaped solid core 5 is formed along the axial direction inside.

An annular rib 6b is integrally formed with the holder 6 in a protruding state on the outer periphery of the front end of the holder 6. This annular rib 6b is formed in order to obtain a certain degree of fitting strength when a holder guide 7, which will be described later, is attached to the front end of the holder 6.
The holder 6 has a short cylindrical portion 6c at its rear end, the short cylindrical portion 6c being provided with a groove 6d along its periphery.

7 shows the individual configuration of the holder guide 7 attached to the front end of the holder 6. As already described, the holder guide 7 has four protrusions 7b extending axially forward from a cylindrical base end 7a, each of which is arranged along the circumferential direction of the base end 7a.
The elliptical base end 7a has flat surfaces 7a1 formed parallel to the top and bottom along the long axis of the ellipse. The front end of the holder 6 is inserted into an axial hole 7c formed in the base end 7a. The holder guide 7 is fitted and attached to the front end of the holder 6 with the front end of the holder 6 abutting against an annular step 7d (see Figures 7D and 7F) formed in the axial hole 7c.

In front of the base end 7a, i.e., at the base of the protrusion 7b, an annular surface 7a2 perpendicular to the axis is formed. When this annular surface 7a2 is pushed by the threaded rod 9 and moves forward together with the holder 6 while housed within the tip barrel 1, it comes into contact with a stopper 1f [see Figure 4B] formed within the tip barrel 1, and acts to prevent the holder 6 from moving forward. As a result, the solid lead 5 housed within the holder 6 is pushed by the threaded rod 9 and piston 8 to move within the holder 6 and is forced out from the opening 1c of the tip barrel 1.

Furthermore, the four protrusions 7b formed on the base end 7a are arranged along the elliptical shape of the base end 7a, and the outer surface on the tip side of each protrusion 7b forms a tapered surface 7b1 that is inclined toward the axial direction.
Additionally, the inner surface of each protrusion 7b is formed along the elliptical peripheral surface of the solid lead 5 delivered from the holder 6, forming a holding surface 7b2 for the solid lead 5. Therefore, the solid lead 5 protruding from the holder 6 is supported by the inner holding surface 7b2 of each protrusion 7b.

The solid core 5 loaded into the holder 6 contains a volatile component as an eyeliner, and examples of such components include volatile silicones (cyclopentasiloxane, methyltrimethicone, dimethicone, etc.), volatile hydrocarbons (isododecane, light isoparaffin, etc.), and film-forming resins that dissolve in these solvents.

FIG. 8 shows the structure of center barrel 12, which is attached to the rear end of front barrel 1 by press fitting.
This center shaft 12 has a threaded rod insertion hole 12a formed at its front end, and this threaded rod insertion hole 12a is formed in a similar elliptical or rectangular shape so that an elliptical shaft body 9a formed in the front half of the threaded rod 9 described later can be inserted therethrough.

In addition, from the front end to the rear end, the center shaft 12 is formed with, in order, a pair of circular protrusions 12b formed toward both outer sides of the shaft, a first annular rib 12c protruding in the circumferential direction, an O-ring mounting groove 12d, and a second annular rib 12e protruding in the circumferential direction.
The pair of circular protrusions 12b are selectively inserted between four long and short ribs 1h formed within the cylindrical portion 1a of the front barrel 1, and are used to align the front barrel 1 and center barrel 12 in the axial direction.

Additionally, first annular rib 12c engages with annular protrusion 1g formed within cylindrical portion 1a of front barrel 1, and acts so that center barrel 12 is attached and fitted into the rear end portion of front barrel 1 by press fitting.
Furthermore, an O-ring 14 shown in FIGS. 2A and 2B is mounted in the O-ring mounting groove 12d, and is configured so that the O-ring 14 comes into sliding contact with the inner circumferential surface of the rear axle 2 in the axial rotation direction.
Furthermore, an annular rib 12e that protrudes in the circumferential direction near the rear end of the center shaft 12 acts as a retainer for the rear axle 2 that is attached to the rear end of the center shaft 12 to prevent it from slipping out.

Fig. 9 shows the single component structure of the threaded rod 9. The threaded rod 9 has an elliptical shaft body 9a whose front half has an elliptical cross section perpendicular to the axis, and an O-ring mounting groove 9b is formed at its tip. As shown in Figs. 2A and 2B, an annular elastic member (O-ring) 13 is mounted in this mounting groove 9b.
The rear half of the threaded rod 9 has a substantially circular cross section with male threads 9c formed along both the upper and lower surfaces, and flat portions 9d formed in the longitudinal direction along both side surfaces.

10 shows the structure of the threaded body 11. The threaded body 11 is formed in a cylindrical shape and has a female thread 11a formed on the inner peripheral surface of the rear end portion. The female thread 11a is to be screwed into the male thread 9c of the threaded rod 9 shown in FIG.
A plurality of anti-rotation ribs 11b are formed along the axial direction on the outer periphery of the front end of the threaded body 11, and these ribs 11b are formed at approximately equal intervals in the circumferential direction.

11 shows the single-piece structure of the rear axle 2, which is formed into a cylindrical shape with a closed rear end. A plurality of vertical ribs 2a are formed on the inner peripheral surface near the opening of the front end at approximately equal intervals along the inner peripheral surface.
When the threaded body 11 is inserted into the rear axle 2 with the rear end side where the female thread 11a of the threaded body 11 is formed as the head, the anti-rotation ribs 11b of the threaded body 11 are engaged between the vertical ribs 2a in the rear axle 2. As a result, the threaded body 11 is supported in the rear axle 2 in an anti-rotation state.

An annular rib 2b is formed so as to protrude from the inner circumferential surface at a position closer to the front end opening than the positions at which the plurality of vertical ribs 2a are formed.
The annular rib 2b protruding from this inner peripheral surface overcomes the annular rib 12e formed on the rear end of the center axle 12 in the axial direction, thereby preventing the center axle 12 and the rear axle 2 from coming loose and connecting them so as to allow relative rotation.
Incidentally, the front end of center shaft 12 is press-fitted into front shaft 1 , so that front shaft 1 and rear shaft 2 are configured to be able to rotate relative to each other via center shaft 12 .

In the rotary dispensing container of the first embodiment described above, in order to dispense solid lead 5 as a rod-shaped member from tip opening 1 c of front barrel 1 , rear barrel 2 is rotated clockwise relative to front barrel 1 .
This causes the threaded body 11 in the rear axle 2 to rotate in the same direction. The threaded rod 9 screwed onto this threaded body 11 has an elliptical shaft body 9a at the front end inserted into the threaded rod insertion hole 12a of the center shaft 12, preventing axial rotation, so that the threaded rod 9 moves forward as the threaded body 11 rotates to the right.
Thus, via the piston 8 which is pressed by the threaded rod 9 , the solid core 5 advances together with the holder 6 and the holder guide 7 .

Meanwhile, as the solid core 5, holder 6, and holder guide 7 move forward, annular surface 7a2 formed on holder guide 7 comes into contact with stopper 1f formed in front barrel 1, preventing further advancement. As a result, as threaded rod 9 moves forward, solid core 5 in holder 6 moves forward within holder 6 and holder guide 7 via piston 8, and the tip of solid core 5 is forced out from front end opening 1c of front barrel 1.
Therefore, a user can apply makeup to eyebrows and the like using the solid core eyeliner dispensed from the rotary dispenser.

After using the solid-core eyeliner, it is necessary to return solid core 5 that has been unwound from front barrel 1 back into front barrel 1, and in this return operation, rear barrel 2 is rotated left relative to front barrel 1. This causes threaded body 11 in rear barrel 2 to also rotate in the same direction, and threaded rod 9, whose axial rotation is prevented by threaded rod insertion hole 12a of center barrel 12, retreats within barrel tube 3 as threaded body 11 rotates left.
As threaded rod 9 retracts, annular elastic member (O-ring) 13 attached to the tip of threaded rod 9 pulls holder 6 while being pressed against the inner surface of holder 6. Therefore, solid lead 5, whose tip has been unwound, retracts within front barrel 1 together with holder 6 and holder guide 7, and the tip of solid lead 5 is returned into front barrel 1.

FIG. 3 shows a state in which the tip of solid lead 5, which has been unwound from front barrel 1, has been returned into front barrel 1 by the above-mentioned operation.
As shown in Figure 3, the solid lead 5 protruding from the front end of the holder 6 that has been returned into the front barrel 1 is supported and held by multiple (four) protrusions 7b provided on the holder guide 7. Moreover, the inner surface of each protrusion 7b that supports the solid lead 5 constitutes a holding surface 7b2 for the solid lead 5 that follows the elliptical circumferential surface of the solid lead 5 that is fed out of the holder 6 [see Figure 7].

As a result, the solid lead 5 protruding from the holder 6 can be supported without any gaps by the inner holding surfaces 7b2 of each protrusion 7b.
Therefore, it is possible to provide a rotary dispenser container that can effectively prevent problems such as cracking or breaking the solid core 5 protruding from the holder 6, even if the container (cylinder 3) is subjected to impact, for example, by accidentally dropping the cosmetic tool.

Next, a second embodiment of a rotary dispensing container according to the present invention will be described with reference to FIGS. 12A to 16. FIG.
In the rotary dispensing container of the second embodiment, the components used in the rotary dispensing container of the first embodiment, other than the front barrel 1, rear barrel 2, threaded rod 9, threaded body 11, and center barrel 12, are the same components that are also used in the second embodiment. Therefore, in the following, the components that are common to the first embodiment will be denoted by the same reference numerals, and their explanation will be omitted as appropriate, and the configuration of the new components used in the second embodiment will be mainly explained.

In addition, in the second embodiment, the following front shaft 21, rear shaft 22, threaded rod 23, and center shaft 24 equipped with a threaded body are used as equivalents to the front shaft 1, rear shaft 2, threaded rod 9, threaded body 11, and center shaft 12 used in the first embodiment.

12A and 12B show the exterior configuration and an axial cross-sectional view of a rotary dispensing container according to the second embodiment excluding the cap. In the rotary dispensing container of the second embodiment, similarly to the first embodiment, rear barrel 22 is attached so as to be capable of rotating relative to front barrel 21 to form barrel tube 3.
1 is attached in the axial direction by abutting the open end of cap 4, which is formed in a bottomed cylindrical shape as shown in Figure 1, against cap attachment step 21d provided on front barrel 21 so as to cover small diameter portion 21b of front barrel 21. As a result, the appearance of the rotary dispensing container with cap 4 attached is configured to form an elongated cylindrical body with a substantially uniform diameter in the longitudinal direction.

In addition, by rotating rear barrel 22 to the right relative to front barrel 21, solid lead 5 as a rod-shaped member is extended from tip opening 21c of front barrel 21, and by rotating rear barrel 22 to the left relative to front barrel 21, solid lead 5 is retracted into front barrel 21. This basic operation is the same as in the first embodiment.
Furthermore, the holder 6, which houses the solid core 5 therein, is provided with a plurality of protrusions 7b that support the solid core 5 protruding from the holder 6, and the solid core 5 is supported without any gaps by the inner holding surfaces 7b2 of each protrusion 7b, which is also similar to the first embodiment.

On the other hand, the rotary dispensing container of the second embodiment has different features from the rotary dispensing container of the first embodiment, such as the axial movement mechanism of threaded rod 23 that accompanies the relative rotation of rear barrel 22 with respect to front barrel 21, and the connection mechanism between threaded rod 23 and holder 6.
In the following, the new component configurations used in the rotary dispensing container of the second embodiment will be described individually with reference to Figs. 13 to 16.

Figure 13 shows the individual configuration of the tip barrel 21, which has a cylindrical section 21a at its rear end, and a small diameter section 21b with an elliptical cross section perpendicular to the axis formed in front of the cylindrical section 21a. An opening 21c is formed at the tip of the small diameter section 21b to support the solid core 5 so that it can be retracted, and a cap attachment step 21d is formed between the cylindrical section 21a and the small diameter section 21b.

Immediately inside the opening 21c of the small diameter portion 21b, there are provided a plurality of (four in this embodiment) guide grooves 21e which receive the respective projections 7b of the holder guide 7 and support the holder 6 together with the holder 6 so as to be movable in the axial direction.
At the front end of each of the guide grooves 21e, a step 21f is formed by reducing the inner diameter toward the opening 21c. The tip of the projection 7b formed on the holder guide 7 abuts against this step 21f, and the step 21f functions as a stopper that prevents the holder 6 from moving forward. Therefore, in this embodiment, the step 21f is referred to as a stopper.

An annular locking ring 21g is formed on the inner surface of the rear end opening of the cylindrical portion 21a, and acts as a fitting portion when a center shaft 24, which will be described later, is attached by press fitting.
Furthermore, on the inner peripheral surface of the rear side of cylindrical portion 21a adjacent to the above-mentioned annular locking ring 21g, four ribs 21h are formed at approximately equal intervals along the inner circumference along the axial direction. A plurality of ribs 24a (eight in this embodiment) formed at equal intervals along the axial direction on the outer periphery of the front end of center shaft 24 (described later) fit relatively into these four ribs 21h, thereby performing the function of preventing center shaft 24 from rotating relative to front shaft 21.

FIG. 14 shows the structure of center barrel 24, which is attached by press fitting to the rear end of front barrel 21.
Center shaft 24 is formed in a substantially cylindrical shape, and a plurality of (eight) ribs 24a are formed at equal intervals around the outer periphery of its front end, each oriented in the axial direction. By inserting ribs 24a into the rear end of front shaft 21 as described above, they come into contact with four ribs 21h inside front shaft 21, thereby preventing center shaft 24 from rotating relative to front shaft 21.
Further, on the outer peripheral surface of the center shaft 24, a first annular rib 24b protruding in the outer peripheral direction, an O-ring mounting groove 24c, and a second annular rib 24d protruding in the outer peripheral direction are formed in that order toward the rear end.

First annular rib 24b is press-fitted into locking ring 21g formed within cylindrical portion 21a of front barrel 21, whereby center barrel 24 is attached to the rear end portion of front barrel 21 by fitting.
12A and 12B is mounted in the O-ring mounting groove 24c, and the O-ring 14 is configured to slide against the inner circumferential surface of the rear shaft 22 in the axial rotation direction.
Furthermore, a second annular rib 24d that protrudes in the circumferential direction of the center shaft 24 acts as a retainer for the rear shaft 22 that is attached to the rear end portion of the center shaft 24 to prevent it from coming off.

Furthermore, a female thread 24e is formed on the inner peripheral surface of the rear end opening of the center shaft 24, and this female thread 24e is adapted to be screwed into a male thread 23d provided on the threaded rod 23, which will be described later.
That is, in the second embodiment, the threaded body 11, which is prepared as a separate component in the first embodiment, is provided integrally on the center shaft 24 side.

Figure 15 shows the individual configuration of the threaded rod 23. The threaded rod 23 comprises a linear shaft body 23a whose front half has a circular cross section perpendicular to the axis, and a small, short large-diameter section 23b whose tip is slightly larger in diameter than the shaft body 23a. An axial hole 23c is formed from the tip of the shaft body 23a toward the rear part including the large-diameter section 23b. This axial hole 23c is provided to provide elasticity to the large-diameter section 23b.

The rear half of the threaded rod 23 has a larger diameter than the shaft body 23a, and the cross section perpendicular to the shaft is substantially circular. Male threads 23d are formed along both the top and bottom surfaces, and flat portions 23e are formed along both side surfaces in the longitudinal direction.
Furthermore, at the rear end of the threaded rod 23, a square flange 23f with rounded corners is integrally formed with the threaded rod 23.

When the threaded rod 23 is inserted into the rear axle 22, this flange 23f is capable of moving in the axial direction and engages with a rib 22b (described later) that is molded along the axial direction inside the rear axle 22, so that the threaded rod 23, including the flange 23f, rotates in the same direction as the rear axle 22 rotates.

Figure 16 shows the individual configuration of the rear shaft 22, which is formed into a cylindrical shape with a closed rear end. An annular rib 22a is formed on the inner circumferential surface slightly behind the front end opening. This annular rib 22a axially rides over the second annular rib 24d that protrudes toward the outer periphery of the center shaft 24, and acts as a retainer for preventing the rear shaft 22 from slipping out of the center shaft 24, and is attached so that the rear shaft 22 can rotate relative to the center shaft 24, which is fitted and attached to the front shaft 21. This allows the front shaft 21 and rear shaft 22 to rotate relative to each other via the center shaft 24.

Four ribs 22b are formed at equal intervals along the inner circumferential surface of the rear half of the rear axle 22, rising from the inner circumferential surface toward the axis.
Therefore, when the threaded rod 23 is inserted into the rear axle 22, the corner portion of the flange portion 23f fits between the ribs 22b. As a result, as already explained, the threaded rod 23 is capable of moving in the axial direction within the rear axle 22, and also acts to rotate in the same direction as the rear axle 22 as the rear axle 22 rotates.

In this embodiment, the flange portion 23f is configured in a square shape with rounded corners, but this depends on the shape of the inside of the rear axle 22 that houses the threaded rod 23.
In short, the shape of the flange portion 23f is such that it can move axially within the rear axle 22, but as long as it acts to cause the threaded rod 23 to rotate in the same direction as the rear axle 22 rotates, an appropriate shape other than the example shown in the figure can be selected.

In the rotary dispensing container of the second embodiment equipped with the new parts described above, to dispense solid lead 5 as a rod-shaped member from tip opening 21c of front barrel 21, rear barrel 22 is rotated clockwise relative to front barrel 21.
As a result, the threaded rod 23 in the rear axle 22 rotates clockwise together with the rear axle 22 due to the action of the flange 23f and the like. At this time, the male thread 23d of the threaded rod 23 is screwed into the female thread 24e of the center axle 24 attached to the front axle 21, so that as the threaded rod 23 rotates clockwise, the threaded rod 23 moves forward.
Therefore, the large diameter portion 23 b formed at the tip of the threaded rod 23 abuts against the piston 8 in the holder 6 , and the solid lead 5 advances together with the holder 6 and the holder guide 7 via the piston 8 .

Meanwhile, as solid lead 5, holder 6, and holder guide 7 move forward, the tip of protrusion 7b formed on holder guide 7 comes into contact with stopper 21f formed in front barrel 21, thereby preventing the forward movement. Note that Figures 12A and 12B show the state in which the tip of protrusion 7b formed on holder guide 7 comes into contact with stopper 21f formed in front barrel 21.
As a result, the solid lead 5 in the holder 6 moves forward within the holder 6 and holder guide 7 via the piston 8 as the threaded rod 23 moves forward, and the tip of the solid lead 5 is advanced from the front end opening 21c of the front barrel 21.
Therefore, a user can apply makeup to eyebrows and the like using the solid core eyeliner dispensed from the rotary dispenser.

After using the solid core eyeliner, it is necessary to return the solid core 5 that has been unwound from the front barrel 21 back into the front barrel 21, and in this return operation, the rear barrel 22 is rotated left relative to the front barrel 21. As a result, the threaded rod 23 inside the rear barrel 22 rotates left together with the rear barrel 22 due to the action of the flange 23f and other parts mentioned above. Then, as the male thread 23d that screws into the female thread 24e of the center barrel 24 rotates left, the threaded rod 23 retracts.

As the threaded rod 23 retracts, the short, large-diameter section 23b formed at the tip of the threaded rod 23 pulls the holder 6 while in contact with the inner surface of the holder 6. Therefore, the solid core 5, whose tip has been extended, retracts inside the front barrel 1 together with the holder 6 and holder guide 7, and the tip of the solid core 5 is returned inside the front barrel 1.

In this case, the outer diameter of the large diameter portion 23b is set to be slightly larger than the minor axis of the inner surface of the elliptical holder 6. Therefore, the large diameter portion 23b of the threaded rod 23 pulls the holder 6 while being in contact with the inner surface of the holder facing in the minor axis direction of the ellipse with a slight reaction force.
As described above, the large diameter portion 23b is provided with an axial hole 23c, and elasticity is imparted to the large diameter portion 23b, so that variation in the reaction force when the large diameter portion 23b comes into contact with the inner surface of the holder 6 can be suppressed.

The solid lead 5 protruding from the holder 6 that has been returned into the front barrel 21 can be supported without any gaps by the inner holding surfaces 7b2 of each protrusion 7b of the holder guide 7, as shown in Figure 3. This means that even if the container (barrel tube 3) receives an impact, problems such as breakage of the solid lead 5 protruding from the holder 6 can be prevented.

The rotating dispenser container according to the present invention described above can be used for a wide variety of purposes, including cosmetic solids such as eyebrow, eyeliner, and lip liner, writing implements such as colored pencils and pencils, and quasi-drugs for moisturizing the corners of the mouth and lips, and can be used as a rotating dispenser container that can store these and be used as needed.

1 Front barrel 1c Opening 1e Guide groove 2 Rear barrel 3 Barrel tube 4 Cap 5 Rod-shaped member (solid core)
6 Holder 6a Solid lead storage section 7 Holder guide 7a Base end 7b Protrusion 7b1 Tapered surface 7b2 Solid lead holding surface 7c Shaft hole 8 Piston (sealing member)
9 Threaded rod 11 Threaded body 12 Center shaft 12a Threaded rod insertion hole 21 Front shaft 21c Opening 21e Guide groove 21f Step portion (stopper)
22 Rear shaft 22b Rib 23 Threaded rod 23a Shaft body 23b Large diameter portion 23c Shaft hole 23d Male thread 23f Flange portion 24 Center shaft 24e Female thread

Claims (4)

A rotary dispensing container comprising: a barrel in which a front barrel and a rear barrel are configured to be relatively rotatable; a threaded rod disposed at the rear of the barrel and adapted to move forward or backward within the barrel in response to relative rotation between the front barrel and the rear barrel; and a rod-shaped member disposed at the front of the barrel and adapted to move axially within the front barrel in response to the forward or backward movement of the threaded rod,
The rod-shaped member is contained within a holder which covers the outer periphery of the rod-shaped member, and a holder guide is provided at a tip end of the holder, the holder guide having a plurality of protrusions which extend axially forward and are arranged along a circumferential direction, and a plurality of guide grooves are formed along an inner circumferential surface of the front barrel, the guide grooves extending in the axial direction and into which the protrusions of the holder guide enter to slide the protrusions in the axial direction,
a tip end of the rod-shaped member protruding from the holder being supported by a plurality of protrusions provided on the holder guide when the rod-shaped member protrudes from the front barrel as the threaded rod advances, and when the rod-shaped member retracts together with the holder and is housed within the front barrel as the threaded rod retracts. The rear shaft is rotatably attached to the center shaft attached to the front shaft, so that the front shaft and the rear shaft are configured to be relatively rotatable,
2. The rotary dispensing container according to claim 1, characterized in that a male thread formed on the threaded rod is screwed into a female thread formed on the center shaft, and the threaded rod is formed with a flange portion that is axially movable within the rear shaft and rotates the threaded rod in the same direction as the rear shaft rotates. A rib protruding in an axial direction is formed in the rear axle along the axial direction, and a flange portion formed on the threaded rod is movable in the axial direction along the rib,
3. The rotary dispensing container according to claim 2, wherein the threaded rod is rotated in the same direction as the rear shaft when the rear shaft rotates, by causing a portion of the flange to come into contact with the rib as the rear shaft rotates. The front end of the threaded rod is formed with a large diameter portion having an axial hole through a linearly shaped shaft body,
4. The rotary dispensing container according to claim 1, wherein the large diameter portion causes the rod-shaped member to protrude from the front barrel as the threaded rod advances, and when the threaded rod retracts, the large diameter portion comes into contact with the inside of the holder, thereby performing a pulling action to retract the holder together with the rod-shaped member.

Images