This application claims priority from Japanese Patent Application No. 2020-175339 filed on Oct. 19, 2020, the content of which is incorporated herein by reference in its entirety.
The present disclosure relates to a cosmetic material feeding container.
In a related art, there have been various types of cosmetic material feeding containers in which, after a moving body gripping a cosmetic material at a front end thereof reaches a feeding limit by relative rotation of a container front portion and a container rear portion, when the container front portion and the container rear portion are further relatively rotated in the same direction, a clutch mechanism is operated to prevent breakage of the moving body.
In a rod-shaped cosmetic material container described in JP-A-2002-336042, a front tube as a container front portion and a base tube as a container rear portion are engaged with each other so as to be rotatable relative to each other, and a push rod as a moving body is accommodated in the front tube and the base tube. A holding portion that constitutes a front end portion of the push rod and holds the rod-shaped cosmetic material is engaged with the front tube so as to be synchronously rotatable, and a male screw is formed along an axial direction in a portion of the push rod on a rear side of the holding portion. A helical tube having a female screw to be screwed to the male screw on an inner peripheral surface thereof is inserted into the base tube, and the base tube and the helical tube can be synchronously rotated by sliding resistance of an O-ring as a synchronous rotation unit disposed between the base tube and the helical tube.
Then, when the base tube and the front tube are relatively rotated in a feeding-out direction of the push rod, a screwing action of the male screw of the push rod and the female screw of the spiral tube works, and the push rod is fed out to reach a raising limit (a feeding limit), and when the base tube and the front tube are relatively rotated in the same direction, a torque which is a rotational force for rotating the spiral tube with respect to the base tube is applied through the push rod that is synchronously rotated with the front tube, and when the rotational torque exceeds the sliding resistance of the O-ring that synchronously rotates the base tube and the spiral tube, the spiral tube is rotated with respect to the base tube, and the push rod is protected.
However, in JP-A-2002-336042, when the push rod reaches the feeding limit, the base tube and the front tube are further rotated relative to each other in the feeding-out direction of the push rod, and the spiral tube is rotated with respect to the base tube. Since a corresponding rotational torque acts on the push rod, it is necessary to increase a diameter of the push rod to some extent to have strength. Depending on variations of the container, the diameter of the push rod may have to be reduced, and in this case, the push rod may be damaged by the rotational torque.
Therefore, an object of the present disclosure is to provide a cosmetic material feeding container capable of protecting a moving body including a push rod on which no rotational torque acts when the moving body reaches a feeding limit and further rotates the container in a feeding-out direction in which the moving body is further fed out.
A cosmetic material feeding container includes a sleeve that is configured to accommodate a cosmetic material and has an opening at a front end of the sleeve through which the cosmetic material is movable, a barrel that is engaged with the sleeve and synchronously rotatable with the sleeve, and has a first click tooth on an inner periphery of the barrel, a moving body that is accommodated in the sleeve, synchronously rotatable with the sleeve, has a male screw formed on an outer periphery of the moving body, and is elongated in an axial direction of the moving body, a screw that is rotatable relative to the barrel, in which a female screw to be screwed with the male screw is formed on an inner periphery of the screw, which is provided with a spring portion having flexibility in a radial direction of the screw, and in which a second click tooth is formed on an outer periphery of the spring portion, the second click tooth repeating click engagement and click release in a rotation direction relative to the first click tooth due to flexibility of the spring portion when the screw is rotated relative to the barrel, and a tail plug that is engaged with the barrel, relatively rotatable with the barrel, and is engaged with the screw and synchronously rotatable with the screw. In the cosmetic material feeding container, the relative rotation of the barrel and the tail plug causes a screwing action of the male screw and the female screw, the moving body is fed out by the screwing action and the cosmetic material appears from the opening, wherein the moving body includes an enlarged diameter portion whose diameter is enlarged in a radial direction of the moving body, and wherein the enlarged diameter portion is configured to contact with the spring portion from an inner side of the spring portion when the enlarged diameter portion comes to a position at which inward bending of the spring portion in a radial direction of the spring portion is restricted.
According to the cosmetic material feeding container, when the barrel and the tail plug are relatively rotated in the feeding-out direction of the moving body, the moving body accommodated in the sleeve is fed out and the cosmetic material is fed out by the screwing action of the male screw on an outer periphery of the moving body that synchronously rotates with the barrel and the sleeve and the female screw on an inner periphery of the screw that synchronously rotates with the tail plug. At the time of feeding out the cosmetic material by the relative rotation of the barrel and the tail plug, the first click tooth that is provided on the inner periphery of the barrel and the second click tooth that are provided on the outer periphery of the spring portion provided on the screw that synchronously rotates with the tail plug and having flexibility in the radial direction repeat the click engagement/release, and a click feeling is given to a user. The enlarged diameter portion of the moving body reaches a position on a radially inner side of the spring portion having the second click tooth of the screw and comes into contact with the spring portion, so that the spring portion is restricted from being bent to the radially inner side, and the barrel and the tail plug are prevented from further rotating relative to each other in the same direction. That is, barrel and the tail plug cannot further rotate relative to each other in the feeding-out direction in which the moving body is fed out. As a result, the enlarged diameter portion reaches the feeding limit, no rotational torque acts on the moving body, and the moving body is be protected.
In a case where the enlarged diameter portion is formed at a rear end portion of the moving body, a moving length of the moving body may be increased, and a storage amount of the cosmetic material can be increased.
Further, it is preferable that the first click tooth and the second click tooth are ratchet teeth that restrict relative rotation in a direction in which the moving body is fed back and allow relative rotation in the direction in which the moving body is fed out. In particular, the present disclosure is applied to a cosmetic material feeding container including an eyeliner using a rod-shaped cosmetic material having a thin core diameter.
As described above, according to the present disclosure, even if the container is further relatively rotated in the feeding-out direction in which the cosmetic material is fed out, the relative rotation is prevented, the rotational torque does not act on the moving body, and the moving body is protected.
Hereinafter, a preferred embodiment of the cosmetic material feeding container according to the present disclosure will be described with reference to
The cosmetic material feeding container of the present embodiment contains various rod-shaped cosmetic materials including an eyeliner, an eye blow, a lip liner, a concealer, is used by a user to feed out an appropriate amount as necessary so as to make the rod-shaped cosmetic material appear for application, and is particularly suitable for a rod-shaped cosmetic material having a small core diameter. Here, as a rod-shaped cosmetic material M, a small-diameter rod-shaped cosmetic material having an outer shape of a substantially elliptical shape (cat eye shape; flat shape) is used.
As illustrated in
In the cosmetic material feeding container 100, as illustrated in
The sleeve 1 is made of a thermoplastic resin, and as illustrated in
A concave portion 1d for engaging with the barrel 2 in the axial direction is formed in an annular shape on an outer peripheral surface of the cylindrical portion 1c of the sleeve 1 on the rear side of the step portion 1b. On an outer peripheral surface of the rear end portion of the sleeve 1 on a rear side of the concave portion 1d, ridges 1f arranged at 90° intervals along a circumferential direction and extending in the axial direction are provided to be engaged with the barrel 2 in a rotation direction.
As illustrated in
The sleeve 1 has a substantially elliptical tubular hole from the opening 1a at the front end thereof to a rear side portion of the step portion 1b, and as illustrated in
The barrel 2 is made of a thermoplastic resin or the like, and is formed in a substantially cylindrical shape elongated in the axial direction as illustrated in
As illustrated in
The tail plug 3 is made of a thermoplastic resin or the like and, as illustrated in
The screw 5 is made of a thermoplastic resin or the like, is formed in a substantially cylindrical shape elongated in the axial direction as illustrated in
The female screw 5a to be screwed with the male screw 4a of the moving body 4 is formed on an inner peripheral surface of a front end of the front end portion 5b.
The first intermediate portion 5c is a so-called resin spring having a diameter larger than that of the front end portion 5b from a step portion 5f and capable of extending and contracting in the axial direction. The first intermediate portion 5c is formed by arranging a plurality of annular portions 5g each having a substantially rectangular cross section and a constant thickness so as to be spaced apart from each other in the axial direction, and connecting the annular portions 5g by a pair of connecting portions 5h, 5h extending in the axial direction and facing each other in the radial direction. Here, the pair of connecting portions 5h, 5h are disposed to be shifted from each other by 90° around the axis with respect to the pair of connecting portions 5h, 5h adjacent in the axial direction. Since the first intermediate portion 5c includes the annular portions 5g and the connecting portions 5h, 5h as described above, the first intermediate portion 5c is prevented from being twisted in the rotation direction. That is, the first intermediate portion 5c is not (hardly) twisted in the rotation direction. The first intermediate portion 5c is for absorbing dimensional errors or the like when assembling components.
A cylindrical portion of the second intermediate portion 5d is provided with ratchet teeth (second ratchet teeth or second click teeth) 5i that ratchet engage with the ratchet teeth 2g of the barrel 2. The ratchet teeth 5i are provided at two positions along the circumferential direction. As illustrated in
As illustrated in
The rear end portion 5e is an insertion portion inserted into the tail plug 3, and as illustrated in
The ratchet teeth 5i protrude radially outward than outer peripheral surfaces of the first intermediate portion 5c and the rear end portion 5e so as to be ratchet engaged with the ratchet teeth 2g on the inner peripheral surface of the barrel 2.
The moving body 4 is made of a thermoplastic resin or the like, is elongated in the axial direction, and has a front half formed in a substantially elliptical rod shape as illustrated in
A round rod-shaped shaft portion is continuously provided at a rea side of the shaft portion 4b of the moving body 4, and an enlarged diameter portion (protruding portion) 4d having a diameter larger than that of the shaft portion is provided at a rear end portion of the shaft portion as a portion for preventing relative rotation of the barrel 2 and the tail plug 3 in the feeding-out direction in which the moving body 4 is fed out. The enlarged diameter portion 4d is formed in a cylindrical shape, and an outer diameter thereof is slightly smaller than the inner diameters of the first intermediate portion 5c, the second intermediate portion 5d, and the rear end portion 5e of the screw 5 (see
As illustrated in
Then, as illustrated in
Further, the barrel 2 is attached to the tail plug 3 and the screw 5, the rear end surface thereof is abutted against the step portion 3a of the tail plug 3, and the convex portion 2h thereof is engaged with the concave portion 3b of the tail plug 3 in the axial direction, so that the barrel 2 is mounted to the tail plug 3 so as not to be movable in the axial direction but to be relatively rotatable.
Then, the cylindrical portion 1c and the step portion 1b of the sleeve 1 are attached to the front end portion 5b of the screw 5 and inserted into the front end portion of the barrel 2. The step portion 1b of the sleeve 1 is abutted against and accommodated in the concave portion 2a of the barrel 2. A front end surface of the screw 5 is abutted against the step portion 1i of the sleeve 1. The step portion 5f of the screw 5 is abutted against the rear end surface of the sleeve 1. In this state, the concave portion 1d of the sleeve 1 is engaged with the convex portion 2c of the barrel 2 in the axial direction, and the ridge 1f is engaged with the ridge 2b of the barrel 2 in the rotation direction, and the sleeve 1 is mounted on the barrel 2 so as to be synchronously rotatable and not to be movable in the axial direction. In this state, the first intermediate portion 5c and the second intermediate portion 5d of the screw 5 are disposed between the sleeve 1 and the tail plug 3.
In this state, the ratchet teeth 2g of the barrel 2 and the ratchet teeth 5i of the second intermediate portion 5d of the screw 5 are located at substantially the same position in the axial direction and away from each other in the radial direction. As illustrated in
As illustrated in
The cosmetic material feeding container 100 configured as described above is put on the market in an initial state in which the moving body 4 is located at the retreating limit, and when the barrel 2 (or the sleeve 1) and the tail plug 3 are relatively rotated in the feeding-out direction in which the moving body 4 is fed out by the user, a screwing action of the male screw 4a of the moving body 4 and the female screw 5a of the screw 5 works. Since the rod-shaped cosmetic material hole 1h of the sleeve 1, the piston 6, and the moving body 4 are prevented from rotating, the moving body 4 is fed out and the rod-shaped cosmetic material M is pressed by the piston 6.
During the relative rotation of the barrel 2 and the tail plug 3, the ratchet teeth 2g, 5i repeat ratchet engagement/disengagement in the relative rotation direction (see
In particular, in the present embodiment, the moving body 4 is fed out, and as illustrated in
In this state, the barrel 2 and the tail plug 3 are prevented from further rotating relative to each other in the same direction. The barrel 2 and the tail plug 3 cannot rotate relative to each other in the feeding-out direction in which the moving body 4 is fed out. That is, the moving body 4 reaches the feeding limit. Then, no rotational torque acts on the moving body 4, and the moving body 4 is protected.
Further, according to the present embodiment, since the enlarged diameter portion 4d is formed at the rear end portion of the moving body 4, a moving length of the moving body 4 can be increased, and the storage amount of the rod-shaped cosmetic material M can be increased.
Although the present disclosure has been specifically described above based on the embodiment, the present disclosure is not limited to the above embodiment, and for example, in the above embodiment, an application with regard to the cosmetic material feeding container that feeds out the moving body 4 has been described, but the first ratchet teeth 2g and the second ratchet teeth 5i may be replaced with first and second click teeth each having, for example, a triangular shape (a mountain shape) or the like, and the moving body 4 may be fed out/fed back while the barrel 2 and the tail plug 3 are enabled to rotate relative to each other in both directions and the click engagement/release is repeated to give the click feeling. In this case, for example, a negative pressure may be generated between the front end (here, the piston 6) of the moving body 4 and the rod-shaped cosmetic material M by feeding back the moving body 4, and the rod-shaped cosmetic material M may be fed back. Further, instead of the piston 6 at the front end portion of the moving body 4, for example, by using a cosmetic material holding body capable of holding the rod-shaped cosmetic material M including a core chuck, the rod-shaped cosmetic material M may be fed out/fed back in accordance with the feeding out/feeding back of the moving body 4. Since the enlarged diameter portion 4d of the moving body 4 is located on the radially inner side of the spring portion 5n, and the barrel 2 and the tail plug 3 cannot rotate further relative to each other in the same direction, no rotational torque acts on the moving body 4, and the moving body 4 is protected. The first ratchet teeth 2g may be a first rachet tooth 2g. The second rachet teeth 5i may be a second rachet tooth 5i.
In the above embodiment, the enlarged diameter portion 4d is provided at the rear end portion of the moving body 4, but the enlarged diameter portion 4d may be provided in the middle of the moving body 4 in the axial direction.
Further, in the above embodiment, two spring portions 5n is provided, but one or three or more spring portion may be provided.
Further, in the above embodiment, the application with regard to the rod-shaped cosmetic material M having the substantially elliptical shape has been described, but the cross-sectional shape may be a circular shape, a rectangular shape, a flat shape, or the like. An outer shape of a component including a sleeve, a barrel, and a tail plug in the cross section may be appropriately adopted from various shapes including a circular shape, a rectangular shape, a flat shape, and an elliptical shape.
Further, in the above embodiment, the rod-shaped cosmetic material M has been described, but other cosmetic materials including liquid cosmetic materials and gel-shaped cosmetic materials may be used.
Number | Date | Country | Kind |
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JP2020-175339 | Oct 2020 | JP | national |
Number | Name | Date | Kind |
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7736079 | Tani | Jun 2010 | B2 |
11369181 | Kuga | Jun 2022 | B2 |
20020168213 | Yamamoto | Nov 2002 | A1 |
20220265027 | Sasaki | Aug 2022 | A1 |
Number | Date | Country |
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2002-336042 | Nov 2002 | JP |
Number | Date | Country | |
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20220117377 A1 | Apr 2022 | US |