JP7516099B2 - Rod-shaped body feeding container - Google Patents

Description

This invention relates to a stick-shaped object dispensing container that can be used as a stick-shaped cosmetic container, applicator, writing instrument, etc., for dispensing stick-shaped objects such as stick-shaped cosmetics, stick-shaped applicators, and stick-shaped writing objects from the container.

A double-headed cosmetic tool is known in which, for example, a stick-shaped cosmetic material is stored in a long, thin container, the required amount of the stick-shaped cosmetic material is dispensed from the front end of the container, and an application part such as a brush or writing brush is attached to the rear end of the container.
With this double-ended cosmetic device, the stick-shaped cosmetic material dispensed from the front end of the container can be applied, for example, to the eyebrows, and then an applicator such as a brush attached to the rear end of the container can be used to add makeup treatments such as blending according to preference.

An example of the above-mentioned conventional double-headed cosmetic tool is a cosmetic applicator described in Patent Document 1.
This cosmetic applicator is equipped with a unit (referred to as the first application unit) that is attached to a central joint and has a rod-shaped cosmetic that can be extended toward the front end, and a unit (referred to as the second application unit) that is attached to the rear side of the joint and includes an applicator made of, for example, flocked material.

The first and second coating units are connected to each other by, for example, fitting them in the axial direction to a central joint portion.
As a result, by using the first application unit, the stick-shaped cosmetic material dispensed from the front end of the container can be used to apply makeup, for example as eyeliner, and by using the second application unit, the applied cosmetic material can be appropriately spread and blended.

JP 2008-148905 A

Incidentally, in the double-headed cosmetic tool disclosed in Patent Document 1, the problem to be solved by the invention is to shorten the overall length dimension including the first application unit and the second application unit.
Therefore, when replacing the first and second applying units, no special consideration is given to ease of attachment and detachment of each unit with the joint portion in the center.

However, in this type of cosmetic tool, the first application unit and the second application unit need to be replaced as the cosmetic is consumed.
For this purpose, typically, female threads are provided on the inner surfaces of both the front and rear ends of the central main body shaft (the joint portion), and the male threads provided on the first and second application units, respectively, are screwed into the front and rear female threads, allowing each application unit to be individually attached to either side of the main body shaft.

In this case, when injection molding the central main shaft, a mold configuration is generally used in which the parting lines (core abutment surfaces) of the front and rear core pins are located approximately in the center of the inner surface of the main shaft. This requires that the front and rear core pins are each pre-processed to form a female thread into the main shaft, and when releasing the front and rear core pins, a so-called forced release operation must be performed for each of the front and rear core pins, in which the female threads of the molded main shaft are forcibly widened to pull the core pin out in the axial direction.

The main object of this invention is to provide a rod-shaped body dispensing container that ensures ease of molding of the main body shaft and improves the operability of attaching and detaching the first and second application units to the main body shaft by considering the arrangement configuration, including the female thread and parting line, of the main body shaft, particularly the central main body shaft used in the above-mentioned double-ended cosmetic device.

The rod-shaped body dispensing container according to the present invention, which has been made to solve the above-mentioned problems, is a rod-shaped body dispensing container in which a first application unit and a second application unit are detachably attached to the front and rear of a main body shaft with the main body shaft at the center, and at least one of the first application unit or the second application unit is provided with a function of dispensing a rod-shaped body, the main body shaft being formed in a cylindrical shape and having a spirally continuous female thread formed on the inner peripheral surface at the center in the axial direction, and a parting line formed at the time of molding the main body shaft being positioned on the inner peripheral surface at either the front or rear in the axial direction avoiding the position where the female thread is formed, the first application unit and the second application unit are inserted from the front and rear of the main body shaft, respectively, and the male threads formed on the first application unit and the second application unit are screwed into the female threads on the inner peripheral surface of the main body shaft, thereby mounting the first application unit and the second application unit to the main body shaft , and providing the function of dispensing the rod-shaped body. The application unit is equipped with a center shaft having a male thread that screws into the female thread on the main shaft, and a tip shaft that is attached to be rotatable relative to the center shaft and pays out the rod-shaped body from its tip as the shaft rotates relative to the center shaft. At the end of the screwing stage when the male thread of the center shaft finishes screwing into the female thread on the main shaft, the ribs formed along the axial direction on the main shaft side and the center shaft side are configured to overcome each other, and the torque required for the ribs to overcome each other is set to be five times or more the torque required to pay out the rod-shaped body by the relative rotation of the center shaft and the tip shaft. The center shaft accommodates a screw rod of a chuck that supports the rod-shaped body and a cylindrical screw body that screws into the male thread of the screw rod in an extension mechanism that pays out the rod-shaped body. Two slits of equal length are provided at 180-degree opposing positions in the cylindrical portion that constitutes the front end of the screw body, dividing the cylindrical portion in half .

In this case, in one preferred embodiment, a circular opening is formed at the end of each slit in the cylindrical portion constituting the front end of the threaded body, and it is desirable that when excessive pressure is applied in the axial direction of the rod-shaped body, the female threaded portion of the threaded body retracts to both outside sides, causing the threaded rod to retract and resulting in a cup-down in which the rod-shaped body is returned into the front shaft .

According to the rod-shaped body dispensing container of this invention, a continuous helical female thread is provided on the inner circumferential surface of the center of the cylindrical main body shaft. Therefore, regardless of the front-to-rear direction of the main body shaft, the first and second application units can be attached to both sides of the main body shaft by using the front and rear parts of the female thread, respectively.

In addition, since the parting line during molding of the main shaft is positioned on either the front or rear inner surface in the axial direction, avoiding the position where the female thread is formed, the main shaft can be molded by applying the female thread forming die to only one of the core pins. Similarly, the aforementioned forced removal when releasing the core pin can be handled only on one of the core pins, making it possible to release the main shaft from the mold.

Furthermore, the torque required for the ribs to overcome each other when attaching the application unit equipped with a rod-shaped body feed function to the main body shaft is set to be five or more times the torque required to feed the rod-shaped body.
This makes it possible to provide a rod-shaped object dispensing container that has favorable operability, allowing the user to immediately determine the two relatively rotating parts by touch.

1A and 1B show the overall configuration of a rod-shaped material dispensing container according to a first embodiment of the present invention, in which (A) is a cross-sectional view taken along the axial direction, and (B) is a cross-sectional view rotated 90 degrees relative to (A). 1B is a cross-sectional view taken along the axial direction and cut at the same plane as in FIG. 1B . 1A and 1B show a state in which the first and second application units are separated from the central main body shaft, in which FIG. 4A is a perspective view, FIG. 4B is a cross-sectional view along the axial direction, and FIG. 4C is a schematic diagram showing the state of being released from the mold after injection molding. 4A, 4B, and 4C are diagrams showing a single component configuration of a center shaft that constitutes a first application unit, in which FIG. 4A is a perspective view, FIG. 4B is a front view, and FIG. 4C is a cross-sectional view taken along the axial direction. 4A, 4B, and 4C are diagrams showing the individual configurations of the screw body that constitutes the first application unit, in which FIG. 4A is a perspective view, FIG. 4B is a front view, and FIG. 4C is a cross-sectional view along the axial direction. 5A, 5B, and 5C are front and enlarged side views showing a single configuration of a chuck constituting a first coating unit; FIG. 13A and 13B show a single component configuration of a cap on the first application unit side, in which FIG. 13A is a perspective view and FIG. 13B is a cross-sectional view taken along the axial direction. 11A and 11B show the overall configuration of a second embodiment, in which (A) is a cross-sectional view taken along the axial direction, and (B) is a cross-sectional view rotated 90 degrees from (A). 13A to 13C are assembly views of a second application unit in a second embodiment, in which FIG. 13A is a perspective view, FIG. 13B is a front view, and FIG. 13C is a cross-sectional view taken along the axial direction. 13A, 13B, and 13C are diagrams showing a single configuration of a center shaft constituting a second application unit in a second embodiment, in which FIG. 13A shows a single component configuration of a front barrel that constitutes a second application unit in a second embodiment, in which (A) is a perspective view, (B) is a front view, and (C) is a cross-sectional view taken along the axial direction. 13A and 13B show the overall configuration of a third embodiment, in which (A) is a cross-sectional view taken along the axial direction, and (B) is a cross-sectional view rotated 90 degrees from (A).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rod-shaped object 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 object contained in the container.
In the drawings shown below, the same parts are indicated with the same symbols; however, in the cross-sectional views showing the overall structure of the rod-shaped body dispensing container, due to space limitations, representative parts are indicated with symbols, and the details of each part are explained by referring to the symbols indicated in the drawings of each individual part.

A first embodiment of a rod-shaped material dispensing container according to the present invention is shown in Figures 1 to 8. Its overall configuration is shown in Figures 1 to 3, with a first application unit U1 and a second application unit U2 detachably attached to the front and rear of a central main body shaft 1 formed in a cylindrical shape.
In the illustrated example, the first application unit U1 is a unit equipped with a mechanism for feeding a solid core eyeliner as a rod-shaped body, and the second application unit U2 is a unit equipped with a brush, thereby forming a double-headed cosmetic tool.

The first application unit U1 and the second application unit U2 each have a cap 2, 3 formed in a cylindrical shape with a bottom, which is removably attached in the axial direction, and as shown in Figure 1, the external appearance including the central main body shaft 1 is configured to form a cylindrical body with approximately the same diameter in the longitudinal direction.

3, the first application unit U1 is provided with a center shaft 4 having a male thread 4a that is detachably screwed into the main shaft 1. The rear end of the center shaft 4 is closed, and a front end of the center shaft 4 is provided with a front shaft 5 that is rotatably attached to the center shaft 4.
The aforementioned solid core eyeliner 6 (hereinafter, sometimes simply referred to as solid core 6) is housed in a shaft hole formed in front barrel 5 as a rod-shaped body.
As is clear from a comparison of Figures 1A and 1B, the tip barrel 5, solid lead 6, and the chuck 7 that supports the solid lead 6 (described later) have different diameters at right angles to each other and an elliptical cross section. This allows the thickness of the line applied by the solid lead 6 at one time to be selected according to preference by changing the orientation of the solid lead 6.

A threaded rod 7A is integrally formed with the chuck 7 that supports the solid core 6 provided in the first application unit U1, and this threaded rod 7A is housed in a cylindrical threaded body 8 housed in the center shaft 4. A short female thread 8e that screws onto the threaded rod 7A is formed in the front end opening of the cylindrical threaded body 8.
Incidentally, a coil spring 9 is disposed between the rear end portion of the front barrel 5 and a flange portion 8b (described later) formed on the peripheral surface of the threaded body 8, and this coil spring 9 is configured to urge the threaded body 8 toward the rear end surface (bottom surface) of the center barrel 4.

Therefore, when the front shaft 5 of the first application unit U1 is held with one hand and the central main body shaft 1 is rotated relatively with the other hand, the center shaft 4 and the threaded body 8 rotate together with the main body shaft 1.
As a result, the female threaded portion 8a of the threaded body 8 pushes the threaded rod 7A integral with the chuck 7 in the axial direction, and the solid lead 6 held by the chuck 7 is advanced from the tip opening 5b of the tip barrel 5. In other words, the solid lead advancing mechanism provided in the first application unit U1 is realized mainly by the relative rotation between the threaded rod 7A formed integrally with the chuck 7 and the threaded body 8 having the female threaded portion 8a that screws into this threaded rod 7A.

On the other hand, the second application unit U2 is provided with a front shaft 11 having a male thread 11a that is detachably screwed into the main shaft 1 as shown in Figure 3, and a brush 12 formed at the front end of the front shaft 11 from a synthetic resin fiber bundle sandwiched between two or more metal wires 12a twisted together.
This brush 12 is composed of a radial application portion 12b extending radially in the diameter direction along the longitudinal direction of the wire 12a, and a brush-like application portion 12c extending longitudinally. After application with the solid core 6, the brush 12 can be used as a blending tool by selectively using the two different application portions 12b, 12c.
The brush 12 is composed of a plurality of fiber bundles each having a cone-shaped tapered surface at the tip, and it is preferable that the fiber bundles are a mixture of straight and non-straight fibers. Note that "straight fibers" refers to fibers whose axis is linear, and "non-straight fibers" refers to fibers whose axis is curved, such as crimped fibers.
In this way, by mixing straight fibers and non-straight fibers, it is possible to achieve both the rigidity of the brush during blending work and the suppression of damage to the skin.

4A and 4B show the structure of a single main shaft 1 located at the center of the rod-shaped material dispensing container.
As already explained, this main shaft 1 is molded into a cylindrical shape, with a continuous spiral female thread 1a formed on the inner circumferential surface at the axial center. Furthermore, parting line 1b formed during injection molding of main shaft 1 is positioned on the inner circumferential surface either to the front or rear in the axial direction, avoiding the position where female thread 1a is formed.
In addition, annular steps 1c, 1d with a slightly wider inner diameter are formed on each of the front and rear opening edges of the main shaft 1, and a pair of short ribs 1e, 1f are formed along the axial direction on the inner surfaces of the steps 1c, 1d that are 180 degrees opposed to each other.

4(C) shows the state in which the main shaft 1 is released from the mold after injection molding. When injection molding the main shaft 1, molten resin is injected from gate G1 into a space (cavity) formed between upper and lower molds M1, M2 and core pins M3, M4 that are butted against each other from the front and rear. At this time, the butted surfaces of core pins M3 and M4 form parting line 1b.
To release the mold, as an example, one core pin M4 on the gate side is released in the direction shown by the hollow arrow, and then the upper and lower dies M1, M2 are separated vertically as shown by the hollow arrows, and the other core pin M3 is also released in the direction shown by the hollow arrow, thereby removing the main shaft 1.

As described above, the parting line 1b formed by the mating surfaces of the core pins M3 and M4 is set at a position that avoids the central portion where the female thread 1a is formed, and as already explained, the main body shaft 1 can be molded by forming the female thread 1a only on one of the core pins, M3. Similarly, the forced removal of the female thread 1a portion when releasing the core pin M3 can also be handled by only one of the core pins, M3, making it possible to release the main body shaft.

FIG. 5 shows the structure of the central shaft 4 which constitutes the first application unit U1.
The rear end of the center shaft 4 is formed into a cylindrical shape with a bottom, and the outer peripheral surface of the rear end is formed with the male thread 4a already described. This male thread 4a is screwed into the front half of the female thread 1a formed on the central inner peripheral surface of the main shaft 1, so that the center shaft 4 is attached to the front end of the main shaft 1. An annular flange 4b is formed on the outer peripheral surface of the center shaft 4, and immediately after the flange 4b, a large diameter portion 4c is formed with a diameter slightly larger than that of the rear portion, and a small protruding rib 4d is formed at one location along the circumferential direction of the large diameter portion 4c in a state of contact with the flange 4b.
In addition, when the center shaft 4 is attached to the main shaft 1, the above-mentioned annular flange portion 4b abuts against the front end of the main shaft 1, thereby positioning the center shaft 4 relative to the main shaft 1. This will be explained later together with the function of the small protrusion-like rib 4d.

A ring-shaped groove 4e is formed near the front end of the center shaft 4, and four ribs 4f, which are slightly longer in the axial direction, protrude from the rear of this groove 4e at 90 degree intervals along the circumference of the center shaft 4.
The annular groove 4e and the four ribs 4f are used when the above-mentioned cap 2 is attached to the first application unit U1, and will be described later together with the configuration of the cap 2, which will be described later.

Furthermore, an annular groove 4g is formed on the inner peripheral surface of the front end of center shaft 4, recessed radially outward, as shown in FIG. 5(C), and an annular protrusion 5a formed on front shaft 5 fits into this annular groove 4g, as shown in FIG. 2(B), thereby supporting front shaft 5 so as to be rotatable relative to center shaft 4 and also functions to prevent front shaft 5 from slipping out of center shaft 4.
Furthermore, a number of ribs 4h are formed at equal intervals along the inner circumference of the inner bottom of the center shaft 4 over a range of a length that accounts for approximately one-third of the overall length of the center shaft 4. When a cylindrical threaded body 8 (described later) is housed in the center shaft 4, these ribs 4h act to enable the threaded body 8 to rotate together with the center shaft 4 in the same direction.

6 shows the cylindrical threaded body 8 housed in the center shaft 4, with a number of axially extending ribs 8a arranged at equal intervals in the circumferential direction on the outer periphery of the rear half of this threaded body 8. Each of the multiple ribs 8a is inserted between the multiple ribs 4h formed on the inner bottom of the center shaft 4, thereby functioning as a rotation stopper between the two.
A flange 8b is formed slightly forward from the center in the longitudinal direction of the threaded body 8, and this flange 8b functions as a spring bearing for the coil spring 9 shown in FIG.

In addition, two slits 8c of equal length are provided at 180-degree opposing positions in the cylindrical portion constituting the front end of the threaded body 8, dividing the cylindrical portion in two, and a circular opening 8d is formed at the end of each slit 8c.
Then, on the inner surface of the front end portion of the threaded body 8, which is formed by dividing the cylindrical portion in two, two short female threaded portions 8e, also shown in FIG. 2(B), are formed opposite each other, and this pair of opposing female threaded portions 8e is screwed into the threaded rod 7A which is integrally molded with the chuck 7.

FIG. 7 shows a single component structure of the chuck 7 having an integral threaded rod 7A.
The chuck 7 has an elliptical shaft 7a formed on the front end side, and four lead grippers 7b are formed to surround the shaft 7a and protrude forward from the shaft 7a. The four lead grippers 7b support the tail end of the solid lead 6, the cross section of which perpendicular to the shaft is elliptical, along its peripheral side surface, and the length dimensions (forward protruding dimensions) of the four lead grippers 7b from the shaft 7a are all formed to be the same.
A triangular rib 7c is formed on the inner side of each lead gripping body 7b, and extends linearly from the shaft portion 7a toward the front.
The length of this triangular rib 7c is preferably 50 to 70% of the length from the shaft portion 7a to the tip of the lead gripping body 7b.

In addition, the aforementioned threaded rod 7A is molded integrally with the chuck 7 at the rear end of the shaft portion 7a, and this threaded rod 7A is molded in a straight line and has a continuous male thread 7d formed along the longitudinal direction.
This threaded rod 7A is housed in the threaded body 8, and the male thread 7d of the threaded rod 7A is screwed into the female thread portion 8e formed in the threaded body 8. Therefore, the relative rotation of the threaded body 8 with respect to the threaded rod 7A moves the chuck 7 forward, and the solid lead 6 in the front barrel 5 is thereby advanced from the tip opening 5b of the front barrel 5.

Figure 8 shows the individual configuration of the cap 2 that is attached to the first application unit U1 side. The cap 2 is preferably molded into a cylindrical shape with a bottom using a transparent resin material, and on the inner surface near the opening of the cap 2, multiple ribs 2a are formed along the axial direction at approximately equal intervals along the inner circumferential surface. Further back from the formation position of the ribs 2a, small protrusions 2b that protrude inward are formed at 90 degree intervals along the inner circumferential surface.

When the cap 2 is attached to the first application unit U1, the ribs 4f formed on the center shaft 4 are inserted between the plurality of ribs 2a, thereby preventing the cap 2 from rotating relative to the center shaft 4. Then, the small protrusions 2b protruding into the cap 2 fit into the grooves 4e, so that the cap 2 is fitted and attached to the center shaft 4 with a clicking sensation.
The fitting force of the small protrusions 2b into the grooves 4e is relatively weak, so that the fitting can be easily released by pulling out the cap 2 in the axial direction, thereby allowing the cap 2 to be removed from the first application unit U1.

In addition, multiple ribs 2a are provided on the inner surface of the opening of the cap 2 to prevent axial rotation between the cap 2 and the central shaft 4 on the first application unit U1 side. By rotating the cap 2 while it is attached to the first application unit U1, the first application unit U1 can be removed together with the cap 2 from the central main body shaft 1.

Therefore, when replacing the solid core 6 of the first application unit U1 as it is consumed, the problem of getting one's hands dirty by touching the first application unit U1 with bare hands can be kept to a minimum.
This is because, even when a new first application unit U1 is attached to the center shaft 4, it is desirable to screw the first application unit U1 onto the central main body shaft 1 with the cap 2 attached, thereby making it possible to avoid the problem of unnecessarily advancing the solid lead 6 by accidentally rotating the front shaft 5.

Incidentally, although the individual configuration of the cap 3 attached to the second application unit U2 is not illustrated, its basic configuration is the same as the example shown in FIG. 8, and in the illustrated example, the length of the cap 3 is also molded slightly shorter to correspond to the length dimension of the second application unit U2.
The cap 3 can be attached to the second coating unit U2 side by utilizing the groove 11c and rib 11d formed on the front barrel 11 on the second coating unit U2 side shown in Figure 2 (A). This configuration is similar to the configuration of the cap 2 on the first coating unit U1 side and the groove 4e and rib 4f formed on the center barrel 4 to which the cap 2 is attached.

In the first embodiment of the rod-shaped body dispensing container configured as described above, to attach the first application unit U1 to the main body shaft 1, the rear end of the center shaft 4 is inserted into the main body shaft 1 and rotated relative to it, whereby the male thread 4a formed on the center shaft 4 screws into the female thread 1a formed in the center of the main body shaft 1.
As a result of this screwing, flange portion 4b formed on center shaft 4 approaches the front end portion of main shaft 1, and at the end of the screwing, small protrusion-like rib 4d on center shaft 4 overcomes rib 1e provided within the opening of main shaft 1.
At this point in time, the flange 4b of the center shaft 4 abuts against the front end of the main shaft 1, and the first application unit U1 is attached to the main shaft 1.

As described above, the small protrusion-like rib 4d on the center shaft 4 overcomes the rib 1e on the main shaft 1 to achieve an attached state, thereby enabling the user to sense by touch that the first application unit U1 is securely attached to the main shaft 1.
In addition, the rotational torque required to advance the solid core 6 from the front shaft 5 by the relative rotation of the center shaft 4 and front shaft 5 in the first application unit U1 is approximately 0.1 to 0.5 [N·cm], whereas the tightening torque required for the above-mentioned over-ride locking can be set to approximately 2.3 to 3.8 [N·cm].
By setting the torque difference to five times or more in this manner, it is possible to provide a rod-shaped body dispensing container with favorable operability, which allows the user to instantly distinguish between the two relatively rotating parts by touch.

When attaching the second application unit U2 to the main body shaft 1 described above, a jump-over lock is used, just like the example of the first application unit U1, so that it is possible to similarly determine by touch that the second application unit U2 is securely attached to the main body shaft 1.

In the embodiment described above, the advancing mechanism that advances the solid lead 6 from the front barrel 5 is provided with the threaded rod 7A of the chuck 7 and the female threaded portion 8e of the threaded body 8 that screws into the male threads 7d of the threaded rod 7A. The female threaded portion 8e of the threaded body 8 is provided on the inner surface of the front end portion of the threaded body 8 that is divided in half by two slits 8c of equal length.
Therefore, when excessive pressure is applied in the axial direction of the solid core 6 unwound from the front barrel 5, the female threaded portion 8e of the threaded body 8 retracts to both outside sides, causing the threaded rod 7A to retract and resulting in a cup-down state in which the solid core 6 is returned into the front barrel 5.

In this case, if the above-mentioned cup down occurs frequently, the product is difficult to use, and therefore the value must be appropriately controlled.
In this embodiment, the depth of each slit 8c provided at the front end of the threaded body 8 is set to 5.8 mm. As a result, the load that the male thread 7d on the threaded rod 7A must overcome over the female thread portion 8e on the threaded body 8 is set to 1.1 to 1.5 N, which is a desirable result in that the cup-down does not occur frequently.

Furthermore, in the embodiment described above, the chuck 7 that supports the solid lead 6 at its rear end is provided with four lead gripping bodies 7 b that support the tail end of the solid lead 6 .
Furthermore, on the inside of each lead holding body 7b, a triangular rib 7c is provided that rises from each lead holding body 7b, and the length dimension of this triangular rib 7c is set to 50 to 70% of the length dimension from the shaft portion 7a to the tip of the lead holding body 7b, as described above.
Therefore, when the solid lead 6 is held using only the lead holding body 7b, the solid lead 6 pushes the lead holding body 7b apart, reducing the contact area and making it difficult to increase the holding force; however, the presence of the rib 7c on the inner surface of the lead holding body 7b allows the rib 7c to penetrate into the solid lead 6, increasing the contact area and increasing the holding force, thereby preventing the lead from falling out when the pen is dropped.

9 to 12 show a rod-shaped material dispensing container according to a second embodiment of the present invention, and the overall structure thereof is shown in FIG.
In this second embodiment, the configuration of the central main body shaft 1 and the first application unit U1 attached to its front end side are the same as those in the first embodiment described with reference to Figures 1 to 11. Therefore, in Figure 9, the parts corresponding to those shown in Figure 1 are indicated by the same reference numerals, and detailed description thereof will be omitted.
The second application unit U2 shown in FIG. 9 is provided with an application section using a bristled body, and together with the first application unit U1 having a mechanism for feeding out a solid core eyeliner, this constitutes a double-headed cosmetic tool.

10 shows the assembly configuration of the second application unit U2 equipped with an application section made of a bristle body, in which a front barrel 14 is attached so as to cover the front half of a cylindrically molded center barrel 13. Then, a flange 15a of the bristle body 15 is inserted into the gap formed between the front end of the center barrel 13 and the front barrel 14, and the cylindrically molded bristle body 15 is attached so as to protrude from the front barrel 14.
The flocked body 15 can be obtained by flocking fine hairs onto the surface of a cylindrically shaped substrate, for example, by electrostatic flocking treatment (such as flocking treatment). The flocked body 15 obtained by electrostatic flocking treatment is expected to provide a natural shading treatment over a wide range due to the action of capillary forces in the flocked parts on the surface.

FIG. 11 shows the structure of the central shaft 13 which constitutes the second coating unit U2.
A male thread 13a is formed on the outer peripheral surface of the rear end of the center shaft 13, and the second application unit U2 is attached to the main body shaft 1 by screwing this male thread 13a into the rear half of the female thread 4a formed in the central main body shaft 1.
The front half of the center shaft 13 is formed to have a slightly smaller outer diameter than the rear half, and a pair of locking projections 13b are formed outward on the peripheral surface near the front end.

FIG. 12 shows the individual configuration of the front barrel 14 that constitutes the second application unit U2.
Front barrel 14 is formed in a cylindrical shape, with a pair of window holes 14a formed in approximately the center in the axial direction. These window holes 14a are used to connect center barrel 13 and front barrel 14, and front barrel 14 is connected to center barrel 13 by inserting the front end of center barrel 13 from the rear of center barrel 14 and fitting locking protrusion 13b of center barrel 13 into it.

The inside diameter of front barrel 14 is slightly tapered toward the tip, and a plurality of support ribs 14g are formed along the shaft on the inner circumferential surface of the tip opening.
The flange portion 15a of the above-mentioned hair-implanted body 15 is supported in the gap between the center shaft 13 and the front shaft 14 while abutting against the support rib 14g, and the peripheral side surface of the hair-implanted body 15 is attached in a state supported by the support rib 14g formed on the front shaft 14.

Furthermore, an annular flange portion 14b is formed approximately in the center of front barrel 14, and immediately behind flange portion 14b is formed large diameter portion 14c which is slightly larger in diameter than the portion behind it, and a small protrusion-like rib 14d is formed at one point along the circumferential direction of large diameter portion 14c in contact with flange portion 14b.
In addition, an annular groove 14e is formed near the front end of front barrel 14, and four ribs 14f, which are slightly longer in the axial direction, protrude from the rear of groove 14e at 90 degree intervals along the circumference of center barrel 14.

The second embodiment of the rod-shaped body dispensing container configured as described above differs from the first embodiment in that a flocked body 15 that has been subjected to electrostatic flocking processing, for example, is used as the second application unit U2.
On the other hand, the front barrel 14 of the second application unit U2 is formed with a groove portion 14e and a rib 14f, and the cap 3 is prevented from rotating relative to the front barrel 14, and the cap 3 is fitted into the front barrel 14 with a clicking sensation, which is similar to the first application unit U1.
Furthermore, a small protruding rib 14d is formed on front barrel 14 of second application unit U2 in contact with flange 14b. Therefore, second application unit U2 is similar to first application unit U1 in that small protruding rib 14d is fitted over rib 1f of main barrel 1 by the above-mentioned override engagement.

FIG. 13 shows the overall structure of a rod-shaped material dispensing container according to a third embodiment of the present invention.
In this third embodiment, the configuration of the central main body shaft 1 and the first application unit U1 attached to its front end side are the same as those in the first embodiment described with reference to Figures 1 to 11. Therefore, in Figure 13, the parts corresponding to those shown in Figure 1 are indicated by the same reference numerals, and detailed description thereof will be omitted.

The second application unit U2 shown in FIG. 13 is equipped with an application section using a makeup brush, and together with the first application unit U1 equipped with a mechanism for feeding out a solid core eyeliner, this constitutes a double-headed cosmetic tool.
That is, the second application unit U2 shown in Fig. 13 is equipped with a cylindrical central shaft 17 and a tail plug 18 that closes the rear end thereof, and an application liquid storage body 19 that stores liquid cosmetic material is housed within the central shaft 17. Also, although it is not clear from the cross-sectional view shown in Fig. 13, the outer periphery of the rear end of the central shaft 17 is provided with a male thread that screws into the above-mentioned female thread 1a formed within the central main body shaft 1, thereby allowing the second application unit U2 to be detachably attached to the main body shaft 1.

A relay core 21 is embedded in the front end of the coating liquid storage body 19, and a brush tip 23 serving as a makeup brush is disposed so as to surround the front end of the relay core 21. The brush tip 23 is supported by a front shaft 22 attached to the front end of the center shaft 17.
A cap 3 is removably attached to the outer periphery of the front end of the center shaft 17, and by attaching this cap 3, the tip 23 of the makeup brush is covered and protected by the cap 3.

The third embodiment shown in FIG. 13 differs from the first and second embodiments in that a brush tip 23 serving as a makeup brush is used in the second application unit U2.
On the other hand, the mounting means for the cap 3 in the second application unit U2 and the adoption of the above-mentioned over-leverage locking mechanism when attaching the second application unit U2 to the main body shaft 1 are similar to the example of the first application unit U1 already described.

The above-described embodiment shows an example of a double-headed cosmetic tool in which the first application unit U1 is equipped with a mechanism for dispensing a solid core eyeliner as a rod-shaped body, and the second application unit U2 is equipped with a unit equipped with a brush or the like. However, the rod-shaped body dispensing container of this invention can be used as the first application unit U1 for a variety of purposes, including solid cosmetics such as eyebrow cosmetics, 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 dispensing container that can store these and be used as appropriate.

REFERENCE SIGNS LIST 1 Main body shaft 1a Female thread 1b Parting line 1c, 1d Annular step portion 1e, 1f Rib 2 First application unit side cap 3 Second application unit side cap 4 Center shaft 4a Male thread 4b Flange portion 4d Small protruding rib 4f Rib 5 Front shaft 6 Solid core 7 Chuck 7A Threaded rod (solid core advancement mechanism)
8 Screw body (solid core extension mechanism)
8c slit 8e female thread 9 coil spring 11 tip shaft 12 brush 13 center shaft 14 tip shaft 15 bristles 17 center shaft 19 coating liquid storage body 22 tip shaft 23 tip (makeup brush)
U1 First coating unit U2 Second coating unit M1, M2 Upper and lower dies M3, M4 Core pin

Claims (2)

A rod-shaped body dispensing container, comprising a main body shaft at the center, a first application unit and a second application unit detachably attached to the front and rear of the main body shaft, and at least one of the first application unit and the second application unit having a function of dispensing a rod-shaped body,
the main shaft is formed in a cylindrical shape, and a continuous spiral female thread is provided on an inner peripheral surface of a central portion in an axial direction, and a parting line formed during molding of the main shaft is located on the inner peripheral surface of either the front or rear of the axial direction, avoiding the position where the female thread is formed;
The first and second application units are inserted from the front and rear of the main body shaft, respectively, and the male threads formed on the first and second application units are screwed into the female threads formed on the inner peripheral surface of the main body shaft, thereby mounting the first and second application units to the main body shaft, respectively ;
The application unit having a function of feeding out the rod-shaped body includes a center shaft having a male thread that screws into a female thread provided on the main shaft, and a tip shaft that is attached to be rotatable relative to the center shaft and feeds out the rod-shaped body from a tip end thereof in response to the relative rotation,
At the end of the screwing process when the male thread of the center shaft finishes screwing into the female thread of the main shaft, the ribs formed along the axial direction on the main shaft side and the center shaft side are configured to climb over each other,
The torque required for the ribs to overcome each other is set to be 5 times or more the torque required for the rod-shaped body to be paid out by the relative rotation of the center shaft and the front shaft,
The rod-shaped body dispensing container is characterized in that the central shaft accommodates a dispensing mechanism that dispenses a rod-shaped body, which comprises a threaded rod of a chuck that supports the rod-shaped body and a cylindrical threaded body that screws into the male thread of the threaded rod, and two slits of equal length are provided at 180-degree opposing positions in the cylindrical portion that constitutes the front end of the threaded body, dividing the cylindrical portion in half . The rod-shaped body dispensing container as described in claim 1, characterized in that a circular opening is formed at the end of each slit in the cylindrical portion constituting the front end of the threaded body, and when excessive pressure is applied in the axial direction of the rod-shaped body, the female threaded portion of the threaded body retracts to both outside sides, causing the threaded rod to retreat and resulting in a cup-down in which the rod-shaped body is returned into the front shaft .

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