Screw-out container

Abstract

The present invention is a screw-out container (1) provided with: a bottomed cylindrical operation section (10); a transmission shaft (23) having a spiral groove (26a) extending around the periphery of the container axis (O) and extending upward from the bottom wall of the operation part (10); a sleeve disposed on the inside of the operation unit (10) so as to surround the outside of the transmission shaft (23), and provided so as to be rotatable in the circumferential direction around the container axis (O) with respect to the transmission shaft (23); and a cavity (12) provided inside the sleeve (11) and capable of moving up and down with respect to the sleeve (11) in accordance with the rotation of the sleeve (11) with respect to the transmission shaft (23), the cavity (12) being provided with: a cavity body (51) for holding the contents; and cylinders (52, 53) extending downward from the central cavity body (51), the cylinders (52, 53) and the central cavity body (51) being integrally formed.

Description

Technical Field

[0001] The present invention relates to a screw-out container. This application claims priority based on Japanese Patent Application No. 2023-029378 filed in Japan on February 28, 2023, Japanese Patent Application No. 2023-074971 filed in Japan on April 28, 2023, and Japanese Patent Application No. 2023-141837 filed in Japan on August 31, 2023, and the contents of which are incorporated herein by reference. Background Art

[0002] The screw-out container comprises a bottomed cylindrical outer body, a sleeve supported inside the outer body so as to be rotatable about the container axis, a central cavity provided inside the sleeve to hold the contents, and a rotation restricting portion provided between the central cavity and the sleeve to restrict the rotation of the central cavity relative to the sleeve (see, for example, Patent Document 1 below). In the screw-out container, when the outer body and the sleeve are rotated relative to each other, the central cavity moves up and down inside the sleeve, thereby allowing the contents to move forward and backward through the sleeve.

[0003] In the screw-out container, when the outer body and the sleeve are rotated relative to each other, the central cavity moves up and down in the sleeve, thereby allowing the rod-shaped contents to move forward and backward through the sleeve.

[0004] Prior art literature Patent Literature Patent Document 1: Japanese Patent Application Laid-Open No. 2021-54486 Summary of the Invention

[0005] Technical issues However, in the above-mentioned prior art, there is still room for improvement in achieving a reduction in the number of components.

[0006] The present invention reduces the number of components and provides a low-cost screw-out container.

[0007] Technical Solution In order to solve the above-mentioned problems, the present invention adopts the following means.

[0008] The first embodiment of the present invention is a screw-out container, which comprises: an operating part with a bottom cylindrical shape; a transmission shaft, which has a spiral groove extending around the container axis and extends upward from the bottom wall of the operating part; a sleeve, which is arranged on the inner side of the operating part in a manner to surround the outer side of the transmission shaft and is configured to be rotatable in the circumferential direction around the container axis relative to the transmission shaft; and a middle cavity, which is arranged on the inner side of the sleeve and can move up and down relative to the sleeve as the sleeve rotates relative to the transmission shaft, and the middle cavity comprises: a middle cavity body, which holds contents; and a cylinder, which extends downward from the middle cavity body, and the cylinder and the middle cavity body are formed as one piece.

[0009] According to this aspect, by forming the cylinder and the central cavity body integrally, the number of components can be reduced, and a low-cost screw-out container can be provided.

[0010] The second embodiment of the present invention is based on the screw-out container of the first embodiment, and the cylinder includes: a movable cylinder having an engaging protrusion engaged with the spiral groove; and a limiting cylinder, which limits the rotation of the middle cavity relative to the sleeve by engaging with the sleeve in the circumferential direction, and the movable cylinder and the limiting cylinder are formed as a whole with the middle cavity body.

[0011] According to this embodiment, by forming the restricting cylinder integrally with the middle cavity body and the movable cylinder, the number of parts can be reduced compared to the conventional case where a separate rotation restricting portion is provided between the sleeve and the middle cavity, thereby providing a low-cost screw-out container.

[0012] The third embodiment of the present invention is based on the screw-out container of the second embodiment, in which a longitudinal groove extending in the up-down direction is formed on the sleeve, and a rib is formed on the limiting cylinder, which is configured to be able to move up and down in the longitudinal groove and to limit the rotation of the middle cavity relative to the sleeve by abutting against the inner surface of the longitudinal groove in the circumferential direction.

[0013] According to this aspect, the vertical movement of the lumen relative to the sleeve can be smoothly achieved.

[0014] The fourth mode of the present invention is based on the screw-out container of the second mode or the third mode, and the middle cavity and the sleeve constitute a box, which is integrally disassembled and assembled to the operating part through the upper end opening of the operating part, and a fitting portion extending in the up-down direction is provided on a component on one side of the operating part and the transmission shaft, and a cylindrical fitted portion is formed on a component on the other side of the operating part and the transmission shaft, and the fitting portion is inserted into the fitted portion in the up-down direction, so that the fitting portion is fitted into the fitted portion in a state where the rotation around the container axis relative to the operating part is restricted.

[0015] According to this method, when the box is installed in the operating portion, the box is inserted into the inner side of the operating portion through the upper end opening of the operating portion. Thus, the interlocking portion is inserted into the interlocked portion in the vertical direction, thereby interlocking with the interlocked portion while the rotation of the screw-out member relative to the operating portion around the container axis is restricted. On the other hand, when removing the box from the operating portion, the box is pulled upward relative to the operating portion. This releases the interlocking portion and the interlocked portion. In other words, in the screw-out container of this embodiment, the box can be easily installed and removed from the operating portion simply by inserting and removing the box from the operating portion.

[0016] The fifth mode of the present invention is based on the screw-out container of the second mode or the third mode, and the movable cylinder is formed into a cylindrical shape coaxially arranged with the container axis, and the limiting cylinder is configured to surround the movable cylinder, and a deformation inhibition portion is provided on the limiting cylinder. When the middle cavity is installed on the sleeve, the deformation inhibition portion is configured to be closer to the outer peripheral surface of the movable cylinder in the radial direction than the inner peripheral surface of the limiting cylinder, and limits the deformation of the movable cylinder toward the outside in the radial direction.

[0017] For example, when the middle cavity is at the uppermost position, if the operating portion and the sleeve are relatively rotated in the screwing-out direction, the movable tube may deform radially outward and the engaging protrusion may pass over the upper end of the spiral groove (i.e., the engaging protrusion may overrun).

[0018] In contrast, in this embodiment, the deformation-reducing portion restricts radially outward deformation of the movable barrel. This prevents the engaging protrusion from overrunning the upper end of the spiral groove. Consequently, a highly reliable screw-out container can be provided.

[0019] The sixth mode of the present invention is based on the screw-out container of the fifth mode, and the deformation inhibition portion is arranged on the limiting cylinder in a manner that can be displaced in the radial direction. The deformation inhibition portion has a guide protrusion, which is pressed toward the inner side of the radial direction by the inner surface of the sleeve during the process of the middle cavity being installed on the sleeve through the upper end opening of the sleeve.

[0020] According to this embodiment, since the deformation-reducing portion is radially displaceably provided on the restricting cylinder, when the central cavity is installed within the sleeve, the guide protrusion is pressed radially inward by the inner surface of the sleeve as the central cavity descends relative to the sleeve. Consequently, as the sleeve is installed within the central cavity, the deformation-reducing portion can be brought closer to the movable cylinder. Consequently, during molding of the central cavity, any degradation in moldability due to the addition of the deformation-reducing portion can be suppressed.

[0021] The seventh embodiment of the present invention is based on the screw-out container of the first embodiment, and the cylinder has a hanging cylinder arranged between the outer circumferential surface of the transmission shaft and the inner circumferential surface of the sleeve, and the hanging cylinder has: a locking protrusion, which is engaged with the spiral groove; and a limiting portion, which limits the rotation of the middle cavity relative to the sleeve by locking with the sleeve in the circumferential direction, and the hanging cylinder and the middle cavity are formed as one piece.

[0022] According to this embodiment, by forming the hanging tube and the central cavity body integrally, the number of parts can be reduced compared to the conventional case where a separate rotation restricting portion is provided between the sleeve and the central cavity, thereby providing a low-cost screw-out container.

[0023] The hanging tube is provided with both an engaging protrusion and a restricting portion, resulting in a single-layer tube structure. The engaging protrusion engages with the spiral groove, and the restricting portion circumferentially engages with the sleeve to restrict the rotation of the central cavity relative to the sleeve. This structure, compared to a dual-tube structure comprising, for example, a cylindrical body provided with an engaging protrusion and a cylindrical body provided with a restricting portion, allows the outer diameter of the central cavity to be reduced, enabling a slender screw-out container.

[0024] According to an eighth aspect of the present invention, in addition to the screw-out container of the seventh aspect, when the middle cavity is located at the uppermost position, the outer peripheral surface of the hanging tube is adjacent to or in contact with the inner peripheral surface of the sleeve.

[0025] For example, when the middle cavity is at the uppermost position, if the operating portion and the sleeve are rotated relative to each other in the unscrewing direction, the engaging protrusion may pass over the upper end of the spiral groove while the hanging tube is deformed radially outward (i.e., the engaging protrusion may exceed the limit).

[0026] In contrast, in this embodiment, the inner peripheral surface of the sleeve can limit the radially outward deformation of the hanging tube. Therefore, it is possible to prevent the engaging protrusion from crossing the upper end of the spiral groove. As a result, it is possible to provide a screw-out container with excellent reliability.

[0027] The ninth aspect of the present invention is based on the screw-out container of the seventh aspect or the eighth aspect, in which a longitudinal groove extending in the up-down direction is formed on the sleeve, and the limiting portion is configured to be able to move up and down in the longitudinal groove, and to limit the rotation of the central cavity relative to the sleeve by abutting against the inner surface of the longitudinal groove in the circumferential direction.

[0028] According to this aspect, the vertical movement of the lumen relative to the sleeve can be smoothly achieved.

[0029] The tenth mode of the present invention is based on the screw-out container of the seventh mode or the eighth mode, and the transmission shaft, the sleeve and the middle cavity constitute a box, which is integrally disassembled and assembled to the operating part through the upper end opening of the operating part, and a fitting portion extending in the up-down direction is provided on a component on one side of the operating part and the transmission shaft, and a cylindrical fitted portion is formed on a component on the other side of the operating part and the transmission shaft, and the fitting portion is inserted into the fitted portion in the up-down direction, so that the fitting portion is fitted into the fitted portion in a state where the rotation of the transmission shaft relative to the operating part around the container axis is restricted.

[0030] According to this method, when the cartridge is mounted on the operating portion, the cartridge is inserted into the inner side of the operating portion through the upper opening of the operating portion. Thus, by inserting the engaging portion into the engaged portion in the vertical direction, the engaging portion engages with the engaged portion while the rotation of the transmission axis relative to the operating portion around the container axis is restricted. On the other hand, when removing the cartridge from the operating portion, the cartridge is pulled upward relative to the operating portion. This releases the engagement between the engaging portion and the engaged portion. In other words, in this method of unscrewing the container, the cartridge can be easily attached to and detached from the operating portion simply by inserting and removing the cartridge from the operating portion.

[0031] Technical Effects According to the present invention, the number of components can be reduced, and a low-cost screw-out container can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional view of the screw-out container of the first embodiment.

[0033] Figure 2 It is a top view of the outer body.

[0034] Figure 3 This is a bottom view of the unscrewed component (transmission shaft).

[0035] Figure 4 It is a partial cross-sectional view of the sleeve.

[0036] Figure 5 It is a partial cross-sectional view of the middle cavity.

[0037] Figure 6 It is an explanatory diagram of the operation when using the screw-out container of the first embodiment.

[0038] Figure 7 This is an action diagram used to explain the method of assembling and disassembling the external module and the box.

[0039] Figure 8 It is an enlarged cross-sectional view of a screw-out container according to a second embodiment.

[0040] Figure 9 It is a partial cross-sectional view of the middle cavity.

[0041] Figure 10 This is an operation explanatory diagram for explaining a state in which the central cavity is mounted on the sleeve.

[0042] Figure 11 This is an operation explanatory diagram for explaining a state in which the central cavity is mounted on the sleeve.

[0043] Figure 12 It is an enlarged cross-sectional view of a screw-out container according to a second embodiment.

[0044] Figure 13It is a cross-sectional view of a screw-out container according to a third embodiment.

[0045] Figure 14 It is a top view of the outer body.

[0046] Figure 15 This is a bottom view of the transfer shaft.

[0047] Figure 16 It is a partial cross-sectional view of the sleeve.

[0048] Figure 17 It is a partial cross-sectional view of the middle cavity.

[0049] Figure 18 It is an explanatory diagram of the operation when using the screw-out container of the third embodiment.

[0050] Figure 19 This is an operation diagram for explaining the method of attaching and detaching the operating unit to the box.

[0051] Explanation of symbols 1 Unscrew the container 10 Operating unit (one component, the other component) 11 sleeve 11c vertical slot 12 middle cavity 21a bottom wall 21b fitting part 23 Unscrew the component (transmission shaft) 24 is fitted part 26 Inner transmission shaft (one side member, the other side member) 51 middle cavity body 52 movable cylinder (movable shaft) 53 limiting cylinder 53a rib 101 boxes 200 deformation suppression unit 202 guide protrusion 1A screw out container 10A operating part (one component, the other component) 11A sleeve 11cA vertical slot 12A middle cavity 21aA bottom wall 21bA interlocking portion 23A transmission shaft (one component, the other component) 24A fitting part 26A inner transmission shaft 32A outer spiral groove (spiral groove) 51A middle cavity body 52A hanging tube 52aA: second engaging protrusion (engaging protrusion) 52cA Restriction Unit Box 101A OContainer axis DETAILED DESCRIPTION

[0052] <First embodiment> Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

[0053] Figure 1 The screw-out container 1 is shown for screwing out a stick-shaped content (not shown) for use. Examples of the stick-shaped content include cosmetics (lipstick, lip balm, stick eye shadow, etc.), medicines, glue, etc.

[0054] The screw-out container 1 includes an operating portion (one component) 10, a sleeve 11, a central cavity 12, and a lid 13. The operating portion 10, sleeve 11, and central cavity 12 are arranged so that their respective central axes lie on a common axis. Hereinafter, the common axis will be referred to as the container axis O, and the direction along the container axis O will be referred to as the vertical direction. When viewed from above, the direction intersecting the container axis O will be referred to as the radial direction, and the direction circumferentially circumferentially surrounding the container axis O will be referred to as the circumferential direction. In this case, the top wall side of the lid 13 in the vertical direction of the screw-out container 1 will be referred to as the upper side, and the bottom wall side of the operating portion 10 (the bottom wall 21a of the outer body 21) will be referred to as the lower side. Furthermore, the direction in the circumferential direction that causes the contents to rise will be referred to as the screw-out direction, and the direction that causes the contents to fall will be referred to as the storage direction.

[0055] The operating portion 10 constitutes the outer portion of the lower portion of the screw-out container 1. The operating portion 10 is formed as a bottomed cylindrical shape, arranged coaxially with the container axis O. The operating portion 10 includes an outer body 21, an intermediate member 22, and a screw-out component (the other component) 23. The screw-out component 23 serves as a transmission shaft.

[0056] The outer body 21 is integrally formed in a bottomed cylindrical shape. An upwardly extending fitting portion 21b is formed on a bottom wall 21a of the outer body 21. The fitting portion 21b is formed in a cylindrical shape and is arranged coaxially with the container axis O.

[0057] like Figure 1 、 Figure 2As shown, a slit 21c is formed in the fitting portion 21b. The slit 21c extends in the vertical direction and opens at the upper open edge of the fitting portion 21b. Multiple slits 21c are formed at intervals in the circumferential direction. In a plan view, assuming that a direction perpendicular to the radial direction (one radial direction) is defined as the first direction L1, two slits 21c are provided on one side and two on the other side of the container axis O in the first direction L1. Within each slit 21c, the spacing between adjacent slits 21c1 in a region on one side of the first direction L1, or the spacing between adjacent slits 21c2 in a region on the other side, is narrower than the spacing between adjacent slits 21c1 and 21c2 across both sides of the first direction L1.

[0058] The portion of the fitting portion 21b located between adjacent slits 21c constitutes the tongue portion 21d. The tongue portion 21d is configured to be elastically deformable in the radial direction. The tongue portion 21d includes a first tongue portion 21d1 located between the slits 21c1 or between the slits 21c2, and a second tongue portion 21d2 located between the slits 21c1 and 21c2. The first tongue portions 21d1 face each other in a first direction L1. The second tongue portions 21d2 face each other in a second direction L2 radially orthogonal to the first direction L1. The circumferential width of the first tongue portion 21d1 is narrower than the circumferential width of the second tongue portion 21d2. However, the spacing between the slits 21c (the width of the tongue portion 21d) can be appropriately varied. It should be noted that the slits 21c are not a required structure.

[0059] A snap-fitting portion 21e is formed on the first tongue portion 21d1. The snap-fitting portion 21e is a protrusion that protrudes radially inward from the first tongue portion 21d1 and extends in the up-down direction. In the illustrated example, one snap-fitting portion 21e1 is provided on the first tongue portion 21d1 of a pair of first tongue portions 21d1 that are opposed to each other in the first direction L1. Two snap-fitting portions 21e2 are provided on the first tongue portion 21d1 of the other of the pair of first tongue portions 21d1 that are opposed to each other in the first direction L1. The upper end edge of each snap-fitting portion 21e is formed in a protruding arc shape toward the top. The snap-fitting portions 21e are formed at equal intervals in the circumferential direction. It should be noted that the number, spacing, etc. of the snap-fitting portions 21e can be appropriately changed.

[0060] A first locking protrusion 21f is formed on the second tongue portion 21d2. The first locking protrusion 21f protrudes radially outward from the upper end of each second tongue portion 21d2. The first locking protrusion 21f extends along the entire circumferential length of each second tongue portion 21d2. The first locking protrusion 21f may also be formed on the first tongue portion 21d1.

[0061] like Figure 1As shown, the intermediate member 22 is formed into a cylindrical shape and is arranged coaxially with the outer body 21. The intermediate member 22 is fitted into the inner side of the outer body 21 from above. The intermediate member 22 is arranged so that its upper end protrudes upward from the outer body 21 and cannot rotate in the circumferential direction relative to the outer body 21. The intermediate member 22 may also be formed integrally with the outer body 21. In addition, in the operating portion 10, as long as the inner peripheral surface of the intermediate member 22 is formed into a circular shape when viewed from above, the top view shape of the peripheral wall 21g of the outer body 21 may also be a shape other than a circular shape.

[0062] The screw-out member 23 extends upward from the bottom wall of the operating portion 10. The screw-out member 23 supports the central cavity 12 in a vertically movable manner inside the outer body 21. The screw-out member 23 includes a fixed shaft member 23a and an outer transmission shaft 23b.

[0063] The fixed shaft member 23a is provided so as not to rotate in the circumferential direction relative to the exterior body 21. Specifically, the fixed shaft member 23a includes a fitted portion 24, a seat portion 25, an inner transmission shaft 26, and an insertion portion 27.

[0064] The engaged portion 24 is formed into a cylindrical shape coaxially with the container axis O. The engaging portion 21b is snap-fitted into the inner side of the engaged portion 24. Specifically, a second locking protrusion 24a is formed on the engaged portion 24. The second locking protrusion 24a protrudes radially inward from the middle portion of the engaged portion 24 in the vertical direction. The second locking protrusion 24a extends along the entire circumferential length of the engaged portion 24. The second locking protrusion 24a is locked to the first locking protrusion 21f from below.

[0065] A protruding portion 24b that protrudes radially outward is formed at the lower end of the engaged portion 24. A circumferential groove 24c is formed at the upper portion of the engaged portion 24. The circumferential groove 24c opens on the outer circumferential surface of the engaged portion 24 and extends along the entire circumference of the outer circumferential surface of the engaged portion 24. A sliding contact portion 24d is embedded in the circumferential groove 24c. The sliding contact portion 24d extends along the entire circumference of the sliding contact portion 24d. The sliding contact portion 24d is made of a softer material than the material of the fixed shaft member 23a (e.g., PP), having a higher elastic modulus and a higher coefficient of friction than the fixed shaft member 23a. The sliding contact portion 24d is fixed to the fixed shaft member 23a by two-color molding of a thermoplastic resin such as an elastomer together with the fixed shaft member 23a. However, the sliding contact portion 24d may be fixed to the fixed shaft member 23a by insert molding the fixed shaft member 23a using nitrile rubber, butyl rubber, or silicone rubber as an insert.

[0066] The pedestal 25 extends radially inward from the upper opening edge of the fitted portion 24. The pedestal 25 is annular and coaxially arranged with the container axis O. The inner circumference of the pedestal 25 abuts against the upper edge of the fitting portion 21b from below.

[0067] The inner transmission shaft 26 extends upward from the inner peripheral edge of the base portion 25. The inner transmission shaft 26 is formed into a cylindrical shape, coaxially arranged with the container axis O. An inner spiral groove (spiral groove) 26a is formed on the outer peripheral surface of the inner transmission shaft 26. The inner spiral groove 26a extends spirally upward as it rotates outward. In this embodiment, two inner spiral grooves 26a are formed. However, the number of inner spiral grooves 26a may be one, or three or more.

[0068] like Figure 1 、 Figure 3 As shown, the insertion portion 27 is formed into a cylindrical shape arranged coaxially with the container axis O. When the fitting portion 21b is fitted into the fitted portion 24, the insertion portion 27 is inserted into the fitting portion 21b. A clamped portion 27a is formed in the insertion portion 27. The clamped portion 27a protrudes radially outward from the insertion portion 27 and extends in the up-down direction. The lower end edge of the clamped portion 27a is formed into a protruding arc shape facing downward. A plurality of clamped portions 27a are formed in the insertion portion 27 at intervals in the circumferential direction, and in this embodiment, are knurled. The number of clamped portions 27a is greater than the number of clamping portions 21e. When the fitting portion 21b is fitted into the fitted portion 24, the clamping portion 21e1 is clamped in the circumferential direction by the clamped portions 27a located on both sides of the clamping portion 21e. On the other hand, the engaging portion 21e2 is circumferentially held between the engaged portion 27a located between the two engaging portions 21e2 and the engaged portion 27a located circumferentially outward relative to the two engaging portions 21e2. Thus, the circumferential engagement between the engaging portion 21e and the engaged portion 27a restricts relative rotation of the fixed shaft member 23a with respect to the operating portion 10.

[0069] The outer transmission shaft 23b surrounds the inner transmission shaft 26 on the outside of the inner transmission shaft 26. A first engaging protrusion 31 is formed at the lower end of the outer transmission shaft 23b, protruding radially inward. The first engaging protrusion 31 is received (engaged) within the inner spiral groove 26a of the inner transmission shaft 26. As the outer transmission shaft 23b rotates circumferentially relative to the inner transmission shaft 26, the first engaging protrusion 31 moves spirally within the inner spiral groove 26a, thereby moving up and down relative to the inner transmission shaft 26. In this embodiment, two first engaging protrusions 31 are provided at intervals in the circumferential direction according to the number of inner spiral grooves 26a. Each first engaging protrusion 31 extends obliquely along the inner spiral groove 26a.

[0070] An outer spiral groove 32 is formed on the outer circumferential surface of the outer transmission shaft 23b. The outer spiral groove 32 extends spirally upward as it rotates outward. In this embodiment, two outer spiral grooves 32 are formed. However, the outer spiral groove 32 may be one, or three or more.

[0071] The sleeve 11 is provided inside the operating portion 10 so as to be rotatable in the circumferential direction relative to the operating portion 10. The sleeve 11 is formed into a cylindrical shape coaxially with the container axis O. The sleeve 11 is inserted into the operating portion 10 on the inside of the intermediate member 22, passing between the intermediate member 22 and the base portion 25. Therefore, the sleeve 11 surrounds the circumference of the screw-out component 23. The lower end edge of the sleeve 11 is supported from below by the extension portion 24b. The upper end edge of the sleeve 11 is inclined relative to the container axis O at a position above the operating portion 10. It should be noted that the sleeve 11 can also be formed of a metal material or the like.

[0072] like Figure 1 、 Figure 4 As shown, a protrusion 11 a is formed on the sleeve 11 .

[0073] The protrusion 11a protrudes radially inward from the lower end of the sleeve 11. When housed within the circumferential groove 24c, the protrusion 11a engages with the upper and lower opening edges of the circumferential groove 24c. As a result, the sleeve 11 is rotatably supported in the circumferential direction by the fixed shaft member 23a while its vertical movement relative to the operating portion 10 is restricted.

[0074] A thin portion 11b is formed in a portion of the sleeve 11 located above the protrusion 11a. The thin portion 11b extends over the entire circumference of the lower end portion of the sleeve 11.

[0075] A longitudinal groove 11c is formed in a portion of the sleeve 11 located above the thin-walled portion 11b. The longitudinal groove 11c opens onto the inner circumferential surface of the sleeve 11. The longitudinal groove 11c extends in the vertical direction. The lower end of the longitudinal groove 11c terminates at the thin-walled portion 11b at the lower end of the sleeve 11. The upper end of the longitudinal groove 11c terminates at the vertical center of the sleeve 11. A plurality of longitudinal grooves 11c (e.g., eight) are formed at intervals in the circumferential direction. It should be noted that the longitudinal groove 11c may also extend radially through the sleeve 11.

[0076] The central cavity 12 is provided within the sleeve 11, allowing vertical movement relative to the sleeve 11 while being restricted from circumferential rotation. The central cavity 12 comprises a central cavity body 51, a movable cylinder (movable shaft) 52, and a restricting cylinder 53. In this embodiment, the central cavity body 51, movable cylinder 52, and restricting cylinder 53 are integrally formed. The central cavity 12 comprises the central cavity body 51, which holds the contents, and a cylinder extending downward from the central cavity body 51, which comprises the movable cylinder 52 and the restricting cylinder 53. This will be described in detail below.

[0077] The central cavity body 51 is formed into a bottomed cylindrical shape coaxial with the container axis O. The central cavity body 51 is housed within the sleeve 11 in a portion located above the inner transmission shaft 26. The central cavity body 51 is filled with the contents. The contents are filled so that they protrude upward from the central cavity body 51.

[0078] The movable barrel 52 is integrally formed with the central cavity body 51. It extends downward from the bottom wall of the central cavity body 51. The movable barrel 52 is inserted into the inner side of the sleeve 11 and surrounds the outer transmission shaft 23b. A second engaging protrusion (engaging protrusion) 52a is formed at the lower end of the movable barrel 52, protruding radially inward. The second engaging protrusion 52a is received (engaged) within the outer spiral groove 32. As the movable barrel 52 rotates circumferentially relative to the outer transmission shaft 23b, the second engaging protrusion 52a moves spirally within the outer spiral groove 32, thereby moving the movable barrel 52 up and down relative to the outer transmission shaft 23b. In this embodiment, two second engaging protrusions 52a are provided, spaced apart in the circumferential direction according to the number of outer spiral grooves 32. Each second engaging protrusion 52a extends obliquely along the outer spiral groove 32.

[0079] The movable barrel 52 is formed with a slit 52b. The slit 52b radially penetrates the movable barrel 52 and extends in the vertical direction. The slit 52b opens at the lower edge of the movable barrel 52. Multiple slits 52b (e.g., two) are formed at intervals in the circumferential direction. As a result, the movable barrel 52 is divided into two parts by the slits 52b in the circumferential direction, and is thus easily elastically deformed in the radial direction.

[0080] like Figure 1 and Figure 5 As shown, the limiting tube 53 extends downward from a portion of the bottom wall of the central cavity body 51 that is located outside the movable tube 52. The limiting tube 53 is arranged coaxially with the container axis O. In the example shown, the outer diameter of the limiting tube 53 is larger than the outer diameter of the central cavity body 51. The lower edge of the limiting tube 53 is located at the same height as the lower edge of the movable tube 52.

[0081] A rib 53a is formed on the outer peripheral surface of the limiting cylinder 53. The rib 53a protrudes radially outward from the limiting cylinder 53 and extends in the vertical direction. The length of the rib 53a in the vertical direction is shorter than the length of the longitudinal groove 11c. In the example shown in the figure, the lower end edge of the rib 53a reaches the lower end edge of the limiting cylinder 53. The upper end edge of the rib 53a reaches the middle part of the limiting cylinder 53. A plurality of ribs 53a (for example, four) are formed at intervals in the circumferential direction. That is, the number of ribs 53a is less than the number of longitudinal grooves 11c. However, the number of ribs 53a and the number of longitudinal grooves 11c can be appropriately changed.

[0082] Each rib 53a is housed (engaged) in a corresponding longitudinal groove 11c. As the central cavity 12 moves vertically relative to the sleeve 11, the rib 53a moves vertically within the longitudinal groove 11c. The rib 53a abuts against the inner surface (the circumferential surface) of the longitudinal groove 11c, thereby restricting the rotation of the central cavity 12 relative to the sleeve 11. In other words, the central cavity 12 is configured to be able to move vertically relative to the sleeve 11 while its rotation relative to the sleeve 11 is restricted by the rib 53a.

[0083] The cover 13 is formed in a closed cylindrical shape and is arranged coaxially with the container axis O. The central cavity 12 is detachably attached to the cover 13 in a state where the cover 13 is inserted through the upper portion of the sleeve 11 .

[0084] Next, the function of the screw-out container 1 will be described. In the following description, the method of using the screw-out container 1 will be described first.

[0085] To use the screw-out container 1, first remove the cap 13 from the operating portion 10. Next, grasp the sleeve 11 and the outer body 21 (peripheral wall 21g) separately, and rotate the operating portion 10 and sleeve 11 relative to each other in the screw-out direction. At this point, because the intermediate member 22 and the fixed shaft component 23a are fixedly mounted so as to prevent rotation relative to the outer body 21, the outer body 21, intermediate member 22, and fixed shaft component 23a rotate together. Meanwhile, because the sleeve 11 and the central cavity 12 are fixedly mounted so as to prevent relative rotation, the sleeve 11 and the central cavity 12 rotate together.

[0086] When the operation portion 10 and the sleeve 11 are relatively rotated, at least one of the following actions occurs: the inner transmission shaft 26 and the outer transmission shaft 23b rotate integrally relative to the movable cylinder 52, or the inner transmission shaft 26 rotates relative to the outer transmission shaft 23b.

[0087] When the inner transmission shaft 26 and the outer transmission shaft 23b rotate integrally relative to the movable barrel 52, the second engaging protrusion 52a, while engaged with the outer spiral groove 32, moves spirally within the outer spiral groove 32, thereby raising the movable barrel 52 (the middle cavity 12) relative to the screw-out member 23. In this manner, the operation of raising the middle cavity 12 by the relative rotation of the screw-out member 23 and the movable barrel 52 in the screw-out direction is referred to as the "first operation" in this specification.

[0088] When the inner transmission shaft 26 rotates relative to the outer transmission shaft 23b, the first engaging protrusion 31, while engaged in the inner spiral groove 26a, moves helically within the inner spiral groove 26a, causing the outer transmission shaft 23b to rise relative to the inner transmission shaft 26. At this time, the second engaging protrusion 52a is pushed upward by the inner surface of the outer spiral groove 32, causing the central cavity 12 to rise along with the outer transmission shaft 23b. In this manner, the action of raising the central cavity 12 along with the outer transmission shaft 23b due to the relative rotation of the inner transmission shaft 26 and the outer transmission shaft 23b in the screw-out direction is referred to as the "second action" in this specification.

[0089] That is, Figure 1 、 Figure 6 As shown, if the operating portion 10 and sleeve 11 are rotated relative to each other in the direction of extraction, the central cavity 12 rises due to at least one of the first and second actions. As a result, the contents are extracted upward from the sleeve 11. Which of the first and second actions occurs depends on factors such as the frictional resistance between the components. However, regardless of which action takes priority, the contents are extracted, allowing the user to use them. It should be noted that both the first and second actions can occur simultaneously.

[0090] As the central cavity 12 rises relative to the sleeve 11, the rib 53a is guided within the longitudinal groove 11c. This restricts the rotation of the central cavity 12 relative to the sleeve 11, allowing the central cavity 12 to rise relative to the sleeve 11. It should be noted that the rib 53a abuts the upper edge of the longitudinal groove 11c, restricting the upward movement of the central cavity 12 relative to the sleeve 11. Consequently, the central cavity 12 reaches its uppermost position.

[0091] When the middle cavity 12 is lowered, the operating portion 10 and the sleeve 11 are rotated relative to each other in the accommodation direction. Thus, the middle cavity 12 is lowered relative to the sleeve 11 by the inner transmission shaft 26 and the outer transmission shaft 23b rotating integrally relative to the movable cylinder 52, or the inner transmission shaft 26 rotating relative to the outer transmission shaft 23b. That is, when the middle cavity 12 is lowered relative to the sleeve 11, the rib 53a is guided into the longitudinal groove 11c. On the basis of the rotation of the middle cavity 12 relative to the sleeve 11 being restricted, the middle cavity 12 is lowered relative to the sleeve 11. It should be noted that the rib 53a is in contact with the vicinity of the thin-walled portion 11b, thereby restricting the descent of the middle cavity 12 relative to the sleeve 11. As a result, the middle cavity 12 reaches the lowest position.

[0092] like Figure 1 、 Figure 6 As shown, in the aforementioned screw-out container 1, a cartridge 101, which is composed of a sleeve 11, a middle cavity 12, and a screw-out member 23, is detachably assembled to an exterior module 100, which is composed of an exterior body 21 and an intermediate member 22. The following describes how to attach (replace) the cartridge 101 to (and remove) the exterior module 100.

[0093] First, to assemble the cartridge 101 with the exterior module 100, the cartridge 101 is inserted into the exterior module 100 through the upper opening of the exterior module 100 (intermediate member 22). The second latching protrusion 24a of the engaged portion 24 then contacts the first latching protrusion 21f of the engaging portion 21b from above. In this state, the cartridge 101 is pressed downwardly into the exterior module 100 so that the engaging portion 21e and the engaged portion 27a do not overlap when viewed from above. In this embodiment, since the engaged portion 27a is knurled, the cartridge 101 can be pressed downwardly into the exterior module 100 without requiring any alignment.

[0094] Then, the second locking protrusion 24a passes downward over the first locking protrusion 21f, causing the second locking protrusion 24a to lock onto the first locking protrusion 21f from below. As a result, the engaging portion 21b is snap-fitted into the engaged portion 24. Thereafter, the engaged portion 24 abuts or contacts the bottom wall 21a, completing the insertion of the cartridge 101. In this state, the vertical movement of the cartridge 101 relative to the exterior module 100 is restricted.

[0095] On the other hand, in the process of the second locking protrusion 24a passing over the first locking protrusion 21f downward, the engaging portion 21e enters between the adjacent engaged portions 27a. As a result, the engaging portion 21e and the engaged portion 27a are engaged in the circumferential direction. As a result, the circumferential movement of the fixed axis component 23a relative to the outer body 21 is restricted. In addition, the engaging portion 21e enters between the adjacent engaged portions 27a, so that the insertion portion 27 is inserted into the inner side of the fitting portion 21b. As a result, the fitting portion 21b is clamped between the insertion portion 27 and the engaged portion 24 in the radial direction. As a result, the radial movement of the box 101 relative to the outer module 100 is restricted.

[0096] Through the above, the mounting of the box 101 to the exterior module 100 is completed.

[0097] When removing the cartridge 101 from the exterior module 100, such as when the contents are exhausted, the cartridge 101 is pulled upward relative to the exterior module 100. The second latching protrusion 24a then passes over the first latching protrusion 21f, releasing the engagement between the engaged portion 24 and the engaging portion 21b. Furthermore, by pulling the cartridge 101 upward relative to the exterior module 100, the engaging portion 21b is removed from between the engaged portion 24 and the insertion portion 27, and the engaging portion 21e is removed from between adjacent engaged portions 27a.

[0098] As a result, the cartridge 101 is removed from the exterior module 100 .

[0099] Here, in the screw-out container 1 of this embodiment, the middle cavity 12 is constructed to include a middle cavity body 51 for holding contents, a movable cylinder 52 extending downward from the middle cavity body 51, and a limiting cylinder 53 extending downward from the middle cavity body 51 and limiting the rotation of the middle cavity relative to the sleeve 11 by engaging with the sleeve 11 in the circumferential direction. The middle cavity body 51, the movable cylinder 52 and the limiting cylinder 53 are formed as a whole.

[0100] According to this structure, by forming the limiting cylinder 53 into one piece with the middle cavity body 51 and the movable cylinder 52, the number of parts can be reduced compared to the previous case where a separate rotation limiting portion is provided between the sleeve and the middle cavity, thereby providing a low-cost screw-out container 1.

[0101] In the screw-out container 1 of this embodiment, a longitudinal groove 11c extending in the vertical direction is formed in the sleeve 11, and a rib 53a is formed on the limiting cylinder 53. The rib 53a is configured to be able to move up and down in the longitudinal groove 11c, and to limit the rotation of the central cavity 12 relative to the sleeve 11 by abutting against the inner surface of the longitudinal groove 11c in the circumferential direction.

[0102] According to this structure, the vertical movement of the central cavity 12 relative to the sleeve 11 can be smoothly achieved.

[0103] In the screw-out container 1 of this embodiment, the operation portion 10 includes a fitting portion 21 b extending upward from a bottom wall 21 a , and the screw-out member 23 includes a fitted portion 24 fitted vertically with the fitting portion 21 b .

[0104] According to this structure, when the box 101 is installed in the outer module 100, the box 101 is inserted into the inner side of the outer module 100 through the upper end opening of the outer module 100. As a result, the fitting portion 21b is inserted into the fitting portion 24 in the up-down direction, so that the fitting portion 21b is fitted into the fitting portion 24. On the other hand, when the box 101 is removed from the outer module 100, the box 101 is pulled upward relative to the outer module 100. As a result, the fitting between the fitting portion 21b and the fitting portion 24 is released. That is, in the screw-out container 1 of this embodiment, the box 101 can be easily installed and removed relative to the outer module 100 only by inserting and removing the box 101 relative to the outer module 100.

[0105] (Second embodiment) The second embodiment is different from the above-described first embodiment in that the restriction cylinder 53 is provided with a deformation suppressing portion 200 .

[0106] exist Figure 8 、 Figure 9 In the illustrated screw-out container 1, a through-hole 53b is formed in the restricting cylinder 53. The through-hole 53b radially extends through the lower portion of the restricting cylinder 53 at a position offset circumferentially from the rib 53a. Furthermore, when viewed radially, at least a portion of the through-hole 53b overlaps with the portion of the movable cylinder 52 located between the slits 52b (hereinafter referred to as the center leg 210). In other words, at least a portion of the through-hole 53b is circumferentially offset from the slits 52b. Multiple through-holes 53b (two in this embodiment) are formed at intervals circumferentially. In the illustrated example, each through-hole 53b overlaps with a second engaging protrusion 52a formed on each center leg 210 when viewed radially. It should be noted that the slits 52b are not essential as long as the movable cylinder 52 is elastically deformable in the radial direction.

[0107] A deformation suppressing portion 200 is disposed within each through-hole 53b. Each deformation suppressing portion 200 is configured to elastically displace radially through the through-hole 53b. Specifically, each deformation suppressing portion 200 is positioned so as to overlap with the second engaging protrusion 52a when viewed radially. Each deformation suppressing portion 200 includes a base plate 201 and a guide protrusion 202.

[0108] The substrate 201 extends downward from the upper edge of the through-hole 53b in a cantilevered manner. The upper edge of the substrate 201 is connected to the upper edge of the through-hole 53b via a thin-walled hinge portion 203. Thus, the deformation suppression portion 200 is connected to the limiting cylinder 53 in a manner that allows it to rotate around the hinge portion 203. It should be noted that the hinge portion 203 can be provided at the lower edge or side edge of the through-hole 53b. Furthermore, the deformation suppression portion 200 is not limited to elastic displacement; it can be at least displaced.

[0109] The guide protrusion 202 protrudes radially outward from the lower portion of the substrate 201. The guide protrusion 202 is formed into a triangular or trapezoidal shape when viewed from the circumferential direction. Specifically, the guide protrusion 202 has an inclined surface that gradually increases in radial outward projection amount as it moves upward from the lower edge of the substrate 201.

[0110] like Figure 11 As shown, when the central cavity 12 is installed within the sleeve 11, at least a portion of the deformation suppressing portion 200 is located radially inward of the inner circumference of the limiting cylinder 53. Specifically, the deformation suppressing portion 200 tilts radially inward as it moves downward. Consequently, the lower edge of the base plate 201 abuts or contacts the outer circumference of the movable cylinder 52 (the central leg portion 210) from the radial outside. By contacting the outer circumference of the central leg portion 210 from the radial inside, the deformation suppressing portion 200 restricts radially outward deformation of the movable cylinder 52.

[0111] like Figure 10 As shown, before the middle cavity 12 is inserted into the sleeve 11, the substrate 201 is located in the through hole 53b, and the guide protrusion 202 protrudes radially outward more than the outer peripheral surface of the limiting cylinder 53. That is, in the example shown in the figure, the deformation suppression portion 200 does not protrude radially inward more than the inner peripheral surface of the limiting cylinder 53. In this state, if the middle cavity 12 is inserted into the sleeve 11, the inclined surface of the guide protrusion 202 abuts against the upper opening edge of the sleeve 11. Thereafter, if the middle cavity 12 is further pushed into the sleeve 11, the inclined surface of the guide protrusion 202 slides in contact with the upper opening edge of the sleeve 11. Thus, as shown in FIG. Figure 11 As shown, the guide protrusion 202 is pushed radially inward as the central cavity 12 moves downward relative to the sleeve 11 , thereby displacing the deformation restraining portion 200 radially inward. As a result, the deformation restraining portion 200 approaches the outer peripheral surface of the movable barrel 52 .

[0112] Thereafter, as the central cavity 12 moves downward, the guide protrusion 202 slides on the inner circumference of the sleeve 11, thereby restricting the deformation restraining portion 200 from returning radially outward. As a result, the central cavity 12 can be attached to the sleeve 11 while the deformation restraining portion 200 is adjacent to the outer circumference of the movable barrel 52.

[0113] In the screw-out container 1 of this embodiment, the slit 52b is formed in the movable barrel 52. This allows the middle leg portion 210 to elastically deform during demolding of the middle cavity 12 (movable barrel 52), allowing the second engaging protrusion 52a to easily pass over the mold. This improves manufacturing efficiency and yield.

[0114] On the other hand, when the screw-out container 1 is used, for example, when the middle cavity 12 is at the uppermost position, at the moment when the second engaging protrusion 52a reaches the upper end of the outer spiral groove 32, if the operating portion 10 and the sleeve 11 are relatively rotated in the screw-out direction, the second engaging protrusion 52a may pass over the upper end of the outer spiral groove 32 while the middle leg portion 210 elastically deforms radially outward (i.e., the second engaging protrusion 52a may overrun). Figure 12 As shown, the deformation restraining portion 200 can restrain the radially outward deformation of the middle leg portion 210. Therefore, the second engaging protrusion 52a can be restrained from running over the upper end of the outer spiral groove 32. As a result, a highly reliable screw-out container 1 can be provided.

[0115] Furthermore, in this embodiment, the deformation suppressing portion 200 is provided on the restricting cylinder 53 so as to be displaceable in the radial direction. Therefore, when the central cavity 12 is installed in the sleeve 11, the guide protrusion 202 is pressed radially inward by the inner surface of the sleeve 11 as the central cavity 12 descends relative to the sleeve 11. Consequently, the deformation suppressing portion 200 can be brought closer to the movable cylinder 52 as the central cavity 12 is installed in the sleeve 11. Therefore, when molding the central cavity 12, a decrease in moldability due to the addition of the deformation suppressing portion 200 can be suppressed.

[0116] In the second embodiment, a configuration in which a deformation suppressing portion 200 is provided for each through-hole 53b is described, but the present invention is not limited to this configuration. Multiple deformation suppressing portions 200 may be provided within a single through-hole 53b. Furthermore, a configuration in which the deformation suppressing portion 200 is provided, for example, at the lower edge of the restricting tube 53, without providing a through-hole 53b may also be employed.

[0117] In the second embodiment, the deformation restraining portion 200 is described as being displaceable in the radial direction, but the present invention is not limited to this structure. The deformation restraining portion 200 may be positioned radially inward relative to the inner peripheral surface of the restricting cylinder 53 .

[0118] While preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications may be made to the structure without departing from the spirit of the present invention. The present invention is not limited by the foregoing description but is solely defined by the appended claims.

[0119] In the above embodiment, the screw-out member 23 is described as including the inner transmission shaft 26 and the outer transmission shaft 23 b , but the present invention is not limited to this structure.

[0120] In the above embodiment, a configuration including the outer body 21 and the intermediate member 22 as the operating portion is described, but the present invention is not limited to this configuration. The operating cylinder portion may also include only the outer body 21. In the above embodiment, a configuration in which a spiral groove is formed on the outer circumference of the inner transmission shaft 26 and the movable cylinder (movable shaft) 52 surrounds the outer side of the inner transmission shaft 26 is described, but the present invention is not limited to this configuration. For example, a configuration in which a spiral groove is formed on the inner circumference of the cylindrical inner transmission shaft 26 and a movable cylinder (movable shaft) 52 having an engaging protrusion is disposed inside the inner transmission shaft 26 is also possible.

[0121] In the above embodiment, the fitting portion, the fitted portion, and the inserting portion of the present invention are described as being cylindrical, but the present invention is not limited to this structure. As long as at least the fitted portion is cylindrical, the fitting portion may also be columnar.

[0122] In the above embodiment, the configuration in which the engaging portion 21b is formed on the operating portion (one component) 10 and the engaged portion 24 is formed on the rotating component (the other component) 23 is described, but the present invention is not limited to this configuration. The engaging portion may be formed on the rotating component (one component) 23, and the engaged portion may be formed on the operating portion (the other component) 10.

[0123] In the above embodiment, the sleeve 11 is provided with longitudinal grooves 11c, and the limiting cylinder 53 is provided with ribs 53a. However, the present invention is not limited to this configuration. The limiting cylinder 53 may be provided with any configuration as long as it restricts the rotation of the central cavity 12 relative to the sleeve 11. In this case, the limiting cylinder 53 may be provided with longitudinal grooves, and the sleeve 11 may be provided with ribs.

[0124] In the above embodiment, the cartridge 101 is described as being removable relative to the exterior module 100, but the present invention is not limited to this configuration. The screw-out container 1 may have a structure in which the central cavity 12 and / or sleeve 11 cannot be removably attached to the operating portion 10 (a disposable structure). In this case, the inner transmission shaft 26 may be integrally formed with the bottom wall 21a of the exterior body 21.

[0125] While the above embodiments describe a configuration in which the engaging portion and the non-engaging portion are circular (cylindrical) in top view, the present invention is not limited to this configuration. The engaging portion and the engaged portion may also have corresponding polygonal shapes in top view. In this case, when the engaging portion and the engaged portion are engaged, the corresponding corners engage with each other in the circumferential direction, thereby restricting relative rotation of the engaging portion and the engaged portion in the circumferential direction. In other words, the corresponding corners constitute rotation stoppers.

[0126] (Regarding the third embodiment) Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

[0127] Figure 13 The screw-out container 1A shown is used to screw out a stick-shaped content (not shown). Examples of the stick-shaped content include cosmetics (lipstick, lip balm, stick eye shadow, etc.), medicines, glue, etc.

[0128] The screw-out container 1A includes an operating portion (one component) 10A, a transmission shaft (the other component) 23A, a sleeve 11A, a central cavity 12A, and a cap 13A. The operating portion 10A, transmission shaft 23A, sleeve 11A, and central cavity 12A are arranged with their respective central axes aligned on a common axis. Hereinafter, the common axis will be referred to as the container axis O, and directions along the container axis O will be referred to as the vertical direction. When viewed from above, directions intersecting the container axis O will be referred to as radial directions, and directions circumferentially circumferential directions will be referred to as circumferential directions. In this context, the top wall side of the cap 13A in the vertical direction of the screw-out container 1A will be referred to as the upper direction, and the bottom wall side of the operating portion 10A (bottom wall 21aA of the outer body 21A) will be referred to as the lower direction. Furthermore, the circumferential direction that raises the central cavity 12A will be referred to as the screw-out direction, and the direction that lowers the central cavity 12A will be referred to as the storage direction.

[0129] The operating portion 10A constitutes an exterior portion of the lower portion of the screw-out container 1A. The operating portion 10A is formed as a whole in a bottomed cylindrical shape arranged coaxially with the container axis O. The operating portion 10A includes an exterior body 21A and an intermediate member 22A.

[0130] The outer casing 21A is integrally formed into a bottomed cylindrical shape. An upwardly extending fitting portion 21bA is formed on a bottom wall 21aA of the outer casing 21A. The fitting portion 21bA is formed into a cylindrical shape disposed coaxially with the container axis O.

[0131] like Figure 13 、 Figure 14As shown, a slit 21cA is formed in the fitting portion 21bA. The slit 21cA extends in the vertical direction and opens at the upper opening edge of the fitting portion 21bA. A plurality of slits 21cA are formed at intervals in the circumferential direction. In a plan view, assuming that one radial direction is the first direction L1, two slits 21cA are provided on one side of the first direction L1 and two on the other side of the container axis O. Within each slit 21cA, the spacing between adjacent slits 21c1A in a region on one side of the first direction L1 and the spacing between adjacent slits 21c2A in a region on the other side are narrower than the spacing between adjacent slits 21c1A and 21c2A across regions on both sides of the first direction L1.

[0132] The portion of the fitting portion 21bA located between circumferentially adjacent slits 21cA constitutes the tongue portion 21dA. The tongue portion 21dA is configured to be elastically deformable in the radial direction. The tongue portion 21dA includes a first tongue portion 21d1A located between the slits 21c1A and between the slits 21c2A, respectively, and a second tongue portion 21d2A located between the slits 21c1A and 21c2A. The first tongue portions 21d1A face each other in a first direction L1. The second tongue portions 21d2A face each other in a second radial direction L2 perpendicular to the first direction L1. The circumferential width of the first tongue portion 21d1A is narrower than the circumferential width of the second tongue portion 21d2A. However, the spacing between the slits 21cA (the width of the tongue portion 21dA) can be appropriately varied. It should be noted that the slits 21cA are not a required feature.

[0133] The first tongue portion 21d1A is formed with a snap-fit ​​portion 21eA. The snap-fit ​​portion 21eA is a protrusion that protrudes radially inward from the first tongue portion 21d1A and extends in the vertical direction. In the illustrated example, one snap-fit ​​portion 21e1A is provided on the first tongue portion 21d1A of a pair of first tongue portions 21d1A that oppose each other in the first direction L1. Two snap-fit ​​portions 21e2A are provided on the first tongue portion 21d1A of the other pair of first tongue portions 21d1A that oppose each other in the first direction L1. The upper edge of each snap-fit ​​portion 21eA is formed into a protruding arc shape facing upward. It should be noted that the number and spacing of the snap-fit ​​portions 21eA can be appropriately changed.

[0134] A first locking protrusion 21fA is formed on the second tongue portion 21d2A. The first locking protrusion 21fA protrudes radially outward from the upper end of each second tongue portion 21d2A. The first locking protrusion 21fA extends along the entire circumferential length of each second tongue portion 21d2A. The first locking protrusion 21fA may also be formed on the first tongue portion 21d1A.

[0135] like Figure 13 As shown, the intermediate member 22A is formed into a cylindrical shape and is arranged coaxially with the outer body 21A. The intermediate member 22A is fitted into the inner side of the outer body 21A from above. The intermediate member 22A is arranged so that its upper portion protrudes upward from the outer body 21A and cannot rotate circumferentially relative to the outer body 21A. The intermediate member 22A can be formed integrally with the outer body 21A. In addition, as long as the inner peripheral surface of the intermediate member 22A is formed into a circular shape when viewed from above, the top view shape of the peripheral wall 21gA of the outer body 21A can also be a shape other than a circular shape.

[0136] The transmission shaft 23A extends upward from the bottom wall of the operation portion 10A. The transmission shaft 23A supports the central cavity 12A inside the outer housing 21A so as to be movable up and down. The transmission shaft 23A includes a fixed shaft member 23aA and an outer transmission shaft 23bA.

[0137] The fixed shaft member 23aA is provided so as not to rotate in the circumferential direction relative to the exterior body 21A. Specifically, the fixed shaft member 23aA includes a fitted portion 24A, a seat portion 25A, an inner transmission shaft 26A, and an insertion portion 27A.

[0138] The engaged portion 24A is formed into a cylindrical shape coaxially with the container axis O. The engaging portion 21bA is snap-fitted into the inner side of the engaged portion 24A. Specifically, a second latching protrusion 24aA is formed on the engaged portion 24A. The second latching protrusion 24aA protrudes radially inward from the middle portion of the engaged portion 24A in the vertical direction. The second latching protrusion 24aA extends along the entire circumferential length of the engaged portion 24A. The second latching protrusion 24aA latches onto the first latching protrusion 21fA from below.

[0139] A protruding portion 24bA extending radially outward is formed at the lower end of the engaged portion 24A. A circumferential groove 24cA is formed at the upper portion of the engaged portion 24A. The circumferential groove 24cA opens on the outer circumferential surface of the engaged portion 24A and extends along the entire circumferential length of the outer circumferential surface of the engaged portion 24A. A sliding contact portion 24dA is embedded within the circumferential groove 24cA. The sliding contact portion 24dA extends along the entire circumference of the sliding contact portion 24dA. The sliding contact portion 24dA is made of a softer material than the material of the fixed shaft member 23aA (e.g., PP), having a lower elastic modulus and a higher coefficient of friction than the fixed shaft member 23aA. The sliding contact portion 24dA is formed from a thermoplastic resin such as an elastomer and is secured to the fixed shaft member 23aA by two-color molding. However, the sliding contact portion 24dA may be formed of, for example, nitrile rubber, butyl rubber, or silicone rubber and may be an insert, or the sliding contact portion 24dA may be fixed to the fixed shaft member 23aA by injection molding. The sliding contact portion 24dA may also be interposed between the sleeve 11A and the exterior body 21A.

[0140] The pedestal portion 25A extends radially inward from the upper opening edge of the engaged portion 24A. The pedestal portion 25A is formed in an annular shape coaxially with the container axis O. The lower surface of the inner circumference of the pedestal portion 25A abuts or contacts the upper opening edge of the engaging portion 21bA from below.

[0141] The inner transmission shaft 26A extends upward from the inner circumferential edge of the base portion 25A. The inner transmission shaft 26A is formed into a cylindrical shape, coaxially arranged with the container axis O. An inner spiral groove 26aA is formed on the outer circumferential surface of the inner transmission shaft 26A. The inner spiral groove 26aA extends spirally upward as it rotates outward. In this embodiment, two inner spiral grooves 26aA are formed. However, the inner spiral groove 26aA may be one, or three or more.

[0142] like Figure 13 and Figure 15As shown, the insertion portion 27A is formed into a cylindrical shape arranged coaxially with the container axis O. When the fitting portion 21bA is fitted into the fitted portion 24A, the insertion portion 27A is inserted into the fitting portion 21bA. An engaged portion 27aA is formed in the insertion portion 27A. The engaged portion 27aA protrudes radially outward from the insertion portion 27A and extends in the up-down direction. The lower end edge of the engaged portion 27aA is formed into a protruding arc shape toward the bottom. A plurality of engaged portions 27aA are formed on the outer peripheral surface of the insertion portion 27A at intervals in the circumferential direction, and in this embodiment, are arranged in a knurled shape. The number of engaged portions 27aA is greater than the number of engaging portions 21eA. When the engaging portion 21bA is engaged with the engaged portion 24A, the engaging portion 21e1A is circumferentially held between the engaged portions 27aA located on either side of the engaging portion 21e1A. Conversely, the engaging portion 21e2A is circumferentially held between the engaged portion 27aA located between the two engaging portions 21e2A and the engaged portions 27aA located circumferentially outward of the two engaging portions 21e2A. Thus, the circumferential engagement between the engaging portions 21eA and the engaged portions 27aA restricts relative rotation of the fixed shaft member 23aA of the transmission shaft 23A with respect to the operating portion 10A.

[0143] The outer transmission shaft 23bA surrounds the inner transmission shaft 26A. A first engaging protrusion 31A is formed at the lower end of the outer transmission shaft 23bA, protruding radially inward. The first engaging protrusion 31A is received (engaged) within the inner spiral groove 26aA of the inner transmission shaft 26A. As the outer transmission shaft 23bA rotates circumferentially relative to the inner transmission shaft 26A, the first engaging protrusion 31A moves spirally within the inner spiral groove 26aA, thereby moving up and down relative to the inner transmission shaft 26A. In this embodiment, two first engaging protrusions 31A are provided at intervals in the circumferential direction, corresponding to the number of inner spiral grooves 26aA. Each first engaging protrusion 31A extends obliquely along the inner spiral groove 26aA.

[0144] An outer spiral groove (spiral groove) 32A is formed on the outer circumferential surface of the outer transmission shaft 23bA. The outer spiral groove 32A spirally extends upward as it rotates outward. In this embodiment, two outer spiral grooves 32A are formed. However, the outer spiral groove 32A may be one, or three or more.

[0145] The sleeve 11A is provided inside the operating portion 10A so as to be rotatable in the circumferential direction relative to the operating portion 10A and the transmission shaft 23A. The sleeve 11A is formed into a cylindrical shape coaxially with the container axis O. The sleeve 11A is inserted into the inner side of the intermediate member 22A, and the lower end of the sleeve 11A is inserted between the intermediate member 22A and the base portion 25A. The sleeve 11A surrounds the outer side of the transmission shaft 23A. The lower end opening edge of the sleeve 11A is supported by the upper surface of the extension portion 24bA. The upper end opening edge of the sleeve 11A is located above the operating portion 10A and is inclined relative to the container axis O. It should be noted that the sleeve 11A can also be formed of a metal material or the like.

[0146] like Figure 13 、 Figure 16 As shown, a protrusion 11aA is formed on the sleeve 11A. The protrusion 11aA is formed at the lower end of the sleeve 11A and protrudes radially inward. When housed within the circumferential groove 24cA, the protrusion 11aA engages with the upper and lower edges of the circumferential groove 24cA. As a result, the sleeve 11A is supported by the transmission shaft 23A for circumferential rotation, while its vertical movement relative to the operating portion 10A is restricted.

[0147] A thin portion 11bA is formed in a portion of the sleeve 11A located above the protrusion 11aA. The thin portion 11bA is provided over the entire circumferential length of the lower end portion of the sleeve 11A.

[0148] A longitudinal groove 11cA is formed in the portion of the sleeve 11A located above the thin-walled portion 11bA. The longitudinal groove 11cA opens onto the inner circumferential surface of the sleeve 11A. The longitudinal groove 11cA extends in the vertical direction. The lower end of the longitudinal groove 11cA terminates at the thin-walled portion 11bA at the lower end of the sleeve 11A. The upper end of the longitudinal groove 11cA terminates at the center of the sleeve 11A in the vertical direction. A plurality of longitudinal grooves 11cA (e.g., eight) are formed at intervals in the circumferential direction. It should be noted that the longitudinal groove 11cA may also extend radially through the sleeve 11A.

[0149] The central cavity 12A is disposed within the sleeve 11A so as to be movable vertically relative to the sleeve 11A while being restricted from circumferential rotation relative to the sleeve 11A. The central cavity 12A comprises a central cavity body 51A and a hanging tube 52A. In this embodiment, the central cavity body 51A and the hanging tube 52A are integrally formed. The central cavity 12A comprises the central cavity body 51A for retaining the contents, and a tube extending downward from the central cavity body 51A, the tube comprising the hanging tube 52A. This will be described in detail below.

[0150] The central cavity body 51A is formed into a bottomed cylindrical shape, coaxially arranged with the container axis O. The central cavity body 51A is housed within the sleeve 11A, in a portion located above the transmission shaft 23A. A rod-shaped content is retained within the central cavity body 51A, protruding upward from the central cavity body 51A.

[0151] The hanging tube 52A extends downward from the bottom wall of the middle cavity body 51A. The hanging tube 52A extends downward from the outer peripheral edge of the bottom wall of the middle cavity body 51A. The hanging tube 52A is positioned between the outer peripheral surface of the transmission shaft 23A and the inner peripheral surface of the sleeve 11A. The outer diameter of the hanging tube 52A is substantially the same as that of the middle cavity body 51A. The hanging tube 52A is inserted into the inner side of the sleeve 11A and surrounds the outer transmission shaft 23bA.

[0152] like Figure 18 As shown, when the middle cavity 12A is at the uppermost position, the outer circumferential surface of the hanging tube 52A is adjacent to or abuts the inner circumferential surface of the sleeve 11A. In this embodiment, regardless of the vertical position of the middle cavity 12A, the outer circumferential surface of the hanging tube 52A is always adjacent to or abuts the inner circumferential surface of the sleeve 11A.

[0153] A second engaging protrusion (engaging protrusion) 52aA is formed at the lower end of the hanging tube 52A, protruding radially inward. The second engaging protrusion 52aA is housed (engaged) within the outer spiral groove 32A. As the hanging tube 52A rotates circumferentially relative to the outer transmission shaft 23bA, the second engaging protrusion 52aA moves spirally within the outer spiral groove 32A, thereby moving up and down relative to the outer transmission shaft 23bA. In this embodiment, two second engaging protrusions 52aA are provided, spaced apart in the circumferential direction according to the number of outer spiral grooves 32A. Each second engaging protrusion 52aA extends obliquely along the outer spiral groove 32A.

[0154] A slit 52bA is formed in the hanging tube 52A. The slit 52bA penetrates the hanging tube 52A in the radial direction and extends in the up-down direction. The slit 52bA opens on the opening edge of the lower end of the hanging tube 52A. A plurality of slits 52bA (for example, two) are formed at intervals in the circumferential direction. As a result, at least the lower portion of the hanging tube 52A is divided into two parts by the slit 52bA in the circumferential direction and is easily elastically deformed in the radial direction. Therefore, when the middle cavity 12A of the injection molding is demolded, the lower portion of the hanging tube 52A is elastically deformed in the radial direction, so that the core can easily pass over the second engaging protrusion 52aA downward.

[0155] A limiting portion 52cA is formed on the hanging tube 52A, and the limiting portion 52cA is engaged with the sleeve 11A in the circumferential direction, thereby limiting the rotation of the central cavity 12A relative to the sleeve 11A. The limiting portion 52cA is formed on the outer peripheral surface of the hanging tube 52A. The limiting portion 52cA protrudes radially outward from the hanging tube 52A and extends in the up-down direction. The length of the limiting portion 52cA in the up-down direction is shorter than the length of the longitudinal groove 11cA. In the example shown in the figure, the lower end edge of the limiting portion 52cA reaches the lower end edge of the hanging tube 52A. The upper end edge of the limiting portion 52cA is located below the upper end edge of the slit 52bA and reaches the middle part of the hanging tube 52A. A plurality of limiting portions 52cA (for example, four) are formed at intervals in the circumferential direction. The number of limiting portions 52cA is less than the number of longitudinal grooves 11cA. However, the number of the restricting portions 52cA and the number of the vertical grooves 11cA can be changed as appropriate.

[0156] Each restricting portion 52cA is housed (engaged) in a corresponding longitudinal groove 11cA. As the central cavity 12A moves up and down relative to the sleeve 11, the restricting portion 52cA moves up and down within the longitudinal groove 11cA. The restricting portion 52cA restricts the rotation of the central cavity 12A relative to the sleeve 11A by abutting against the inner surface (the surface facing the circumferential direction) of the longitudinal groove 11cA. In other words, the central cavity 12A is configured to be able to move up and down relative to the sleeve 11A while the sleeve 11A's rotation is restricted by the restricting portion 52cA. Thus, the central cavity 12A is provided inside the sleeve 11A so as to be able to move up and down relative to the sleeve 11A as the sleeve 11A rotates relative to the transmission shaft 23A.

[0157] The cover 13A is formed in a closed cylindrical shape arranged coaxially with the container axis O. The cover 13A is detachably attached to the upper portion of the intermediate member 22A with the upper portion of the sleeve 11A inserted therein.

[0158] Next, the function of the screw-out container 1A will be described. In the following description, the method of using the screw-out container 1A will be described first.

[0159] To use the screw-out container 1A, first remove the cap 13A from the upper portion of the intermediate member 22A. Next, grasp the sleeve 11A and the outer body 21A (peripheral wall 21gA) separately, and rotate the operating portion 10A and sleeve 11A relative to each other in the screw-out direction. At this point, because the intermediate member 22A and the fixed shaft member 23aA are fixedly mounted so as to prevent rotation relative to the outer body 21A, the outer body 21A, intermediate member 22A, and fixed shaft member 23aA rotate together. Meanwhile, because the sleeve 11A and the central cavity 12A are fixedly mounted so as to prevent relative rotation, the sleeve 11A and the central cavity 12A rotate together.

[0160] When the operation portion 10A and the sleeve 11A are relatively rotated, at least one of the following actions occurs: the inner transmission shaft 26A and the outer transmission shaft 23bA are integrally rotated relative to the hanging tube 52A, or the inner transmission shaft 26A rotates relative to the outer transmission shaft 23bA.

[0161] When the inner transmission shaft 26A and the outer transmission shaft 23bA rotate integrally relative to the hanging tube 52A, the second engaging protrusion 52aA, while engaged with the outer spiral groove 32A, moves helically within the outer spiral groove 32A, thereby raising the hanging tube 52A (and the central cavity 12A) relative to the transmission shaft 23A. In this specification, the relative rotation of the transmission shaft 23A and the hanging tube 52A in the direction of rotation, which raises the central cavity 12A, is referred to as the "first action."

[0162] As the inner transmission shaft 26A rotates relative to the outer transmission shaft 23bA, the first engaging protrusion 31A, while engaged in the inner spiral groove 26aA, moves spirally within the inner spiral groove 26aA, causing the outer transmission shaft 23bA to rise relative to the inner transmission shaft 26A. At this time, the second engaging protrusion 52aA is pushed upward by the inner surface of the outer spiral groove 32A, causing the central cavity 12A and the outer transmission shaft 23bA to rise together. In this manner, the action of raising the central cavity 12A and the outer transmission shaft 23bA together due to the relative rotation of the inner transmission shaft 26A and the outer transmission shaft 23bA in the screw-out direction is referred to as the "second action" in this specification.

[0163] That is, Figure 13 and Figure 18 As shown, if the operating portion 10A and sleeve 11A are rotated relative to each other in the direction of extraction, the central cavity 12A rises due to at least one of the first and second operations. This causes the rod-shaped contents to be extracted upward from the upper opening of sleeve 11A. Which of the first and second operations is performed depends on factors such as the frictional resistance between the components. However, regardless of which operation takes precedence, the rod-shaped contents are extracted, allowing the user to use the rod-shaped contents. It should be noted that both the first and second operations can occur simultaneously.

[0164] As the central cavity 12A ascends relative to the sleeve 11A, the restricting portion 52cA is guided within the longitudinal groove 11cA. This restricts the rotation of the central cavity 12A relative to the sleeve 11A, while the central cavity 12A ascends relative to the sleeve 11A. The restricting portion 52cA abuts the upper edge of the longitudinal groove 11cA, thereby restricting the upward movement of the central cavity 12A relative to the sleeve 11A. This allows the central cavity 12A to reach its uppermost position.

[0165] When the middle cavity 12A is lowered, the operating portion 10A and the sleeve 11A are rotated relative to each other in the accommodation direction. Thus, the middle cavity 12A is lowered relative to the sleeve 11A by the inner transmission shaft 26A and the outer transmission shaft 23bA rotating integrally relative to the hanging cylinder 52A, or by the inner transmission shaft 26A rotating relative to the outer transmission shaft 23bA. That is, when the middle cavity 12A is lowered relative to the sleeve 11A, the limiting portion 52cA is guided into the longitudinal groove 11cA. On the basis of the rotation of the middle cavity 12A relative to the sleeve 11A being restricted, the middle cavity 12A is lowered relative to the sleeve 11A. It should be noted that the lower end of the limiting portion 52cA enters the thin-walled portion 11bA, thereby restricting the descent of the middle cavity 12A relative to the sleeve 11A. Thus, the middle cavity 12A reaches its lowest position.

[0166] like Figure 13 、 Figure 19 As shown, in the aforementioned screw-out container 1A, a cartridge 101A, which is composed of a sleeve 11A, a central cavity 12A, and a transmission shaft 23A, is detachably assembled to an operating portion 10A, which is composed of an outer body 21A and an intermediate member 22A. The following describes how to attach (replace) the cartridge 101A to the operating portion 10A.

[0167] First, to assemble the cartridge 101A with the operating portion 10A, the cartridge 101A is inserted into the operating portion 10A through the upper opening of the intermediate member 22A of the operating portion 10A. The second latching protrusion 24aA of the engaged portion 24A then contacts the first latching protrusion 21fA of the engaging portion 21bA from above. In this state, the cartridge 101A is pressed downwardly into the operating portion 10A so that the engaging portion 21eA and the engaged portion 27aA do not overlap when viewed from above. In this embodiment, since the engaged portion 27aA is knurled, the cartridge 101A can be pressed downwardly into the operating portion 10A without circumferential alignment.

[0168] Then, the second locking protrusion 24aA passes downward over the first locking protrusion 21fA, and the second locking protrusion 24aA is locked to the first locking protrusion 21fA from below. As a result, the engaging portion 21bA is snap-fitted into the engaged portion 24A. Thereafter, the engaged portion 24A abuts or contacts the upper surface of the bottom wall 21aA, completing the insertion of the cartridge 101A. In this state, the vertical movement of the cartridge 101A relative to the operating portion 10A is restricted.

[0169] On the other hand, when the second locking protrusion 24aA passes over the first locking protrusion 21fA downward, the engaging portion 21eA enters between the adjacent engaged portions 27aA. Thus, the engaging portion 21eA and the engaged portion 27aA are circumferentially engaged. As a result, the circumferential movement of the fixed axis component 23aA relative to the outer body 21 is restricted. In addition, the engaging portion 21eA enters between the adjacent engaged portions 27aA, so that the insertion portion 27A is inserted into the inner side of the fitting portion 21bA. Thus, the fitting portion 21bA is clamped between the insertion portion 27A and the engaged portion 24A in the radial direction. As a result, the movement of the box 101A relative to the operating portion 10A in the radial direction is restricted.

[0170] Through the above, the mounting of the cartridge 101A to the operation portion 10A is completed.

[0171] When removing the cartridge 101A from the operating portion 10A, such as when the rod-shaped contents are exhausted, the cartridge 101A is pulled upward relative to the operating portion 10A. This causes the second latching protrusion 24aA to pass upward over the first latching protrusion 21fA, thereby releasing the engagement between the engaged portion 24A and the engaging portion 21bA. Furthermore, by pulling the cartridge 101A upward relative to the operating portion 10A, the engaging portion 21bA is removed from between the engaged portion 24A and the insertion portion 27A, and the engaging portion 21eA is removed from between circumferentially adjacent engaged portions 27aA.

[0172] As a result, the cartridge 101A is detached from the operation portion 10A.

[0173] Here, in the screw-out container 1A of this embodiment, the middle cavity 12A includes a middle cavity body 51A for holding a rod-shaped content and a hanging tube 52A extending downward from the middle cavity body 51A. The middle cavity body 51A and the hanging tube 52A are formed integrally.

[0174] According to this structure, by forming the hanging tube 52A and the middle cavity body 51A into one body, the number of parts can be reduced compared to the conventional case where a separate rotation restricting portion is provided between the sleeve and the middle cavity, thereby providing a low-cost screw-out container 1A.

[0175] In the screw-out container 1A of this embodiment, a second engaging protrusion 52aA and a limiting portion 52cA are provided on the hanging tube 52A. The second engaging protrusion 52aA engages with the outer spiral groove 32A of the transmission shaft 23A, and the limiting portion 52cA limits the rotation of the central cavity 12A relative to the sleeve 11A by engaging with the sleeve 11A in the circumferential direction.

[0176] According to this structure, compared with a double-tube structure including a tube provided with a second engaging protrusion and a tube provided with a restricting portion, for example, the outer diameter of the middle cavity 12A can be suppressed to be thinner, and the screw-out container 1A can be made slimmer.

[0177] For example, when the middle cavity 12A is at the uppermost position, if the operating portion 10A and the sleeve 11A are rotated relative to each other in the screw-out direction, the second engaging protrusion 52aA may pass over the upper end of the outer spiral groove 32A while the hanging tube 52A is deformed radially outward (i.e., the second engaging protrusion 52aA may exceed the limit).

[0178] In contrast, in the screw-out container 1A of the present embodiment, when the middle cavity 12A is located at the uppermost position, the outer peripheral surface of the hanging tube 52A is adjacent to or in contact with the inner peripheral surface of the sleeve 11A.

[0179] With this structure, when the central cavity 12A is at its uppermost position, the inner circumferential surface of the sleeve 11A restricts radially outward deformation of the hanging tube 52A, thereby preventing the second engaging protrusion 52aA from overriding the upper end of the outer spiral groove 32A. Consequently, a highly reliable screw-out container 1A can be provided.

[0180] In the screw-out container 1A of this embodiment, a longitudinal groove 11cA extending in the up-down direction is formed in the sleeve 11A, and the limiting portion 52cA is configured to be able to move up and down in the longitudinal groove 11cA, and to limit the rotation of the middle cavity 12A relative to the sleeve 11A by abutting against the inner surface of the longitudinal groove 11cA in the circumferential direction.

[0181] According to this structure, the vertical movement of the central cavity 12A relative to the sleeve 11A can be smoothly achieved.

[0182] In the screw-out container 1A of this embodiment, the operation portion 10A includes a fitting portion 21bA extending upward from a bottom wall 21aA, and the transmission shaft 23A includes an fitted portion 24A fitted in the fitting portion 21bA in the vertical direction.

[0183] According to this structure, when the box 101A is installed on the operating part 10A, the box 101A is inserted into the inner side of the operating part 10A through the upper end opening of the operating part 10A. As a result, the fitting portion 21bA is inserted into the fitting portion 24A in the vertical direction, so that the fitting portion 21bA is fitted into the fitting portion 24A. On the other hand, when the box 101A is removed from the operating part 10A, the box 101A is pulled upward relative to the operating part 10A. As a result, the fitting between the fitting portion 21bA and the fitting portion 24A is released. That is, in the screw-out container 1A of this embodiment, the box 101A can be easily installed and removed relative to the operating part 10A simply by inserting and removing the box 101A relative to the operating part 10A.

[0184] While preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications may be made to the structure without departing from the spirit of the present invention. The present invention is not limited by the foregoing description but is solely defined by the appended claims.

[0185] In the above embodiment, the transmission shaft 23A is described as including the inner transmission shaft 26A and the outer transmission shaft 23bA, but the present invention is not limited to this configuration. The transmission shaft 23A may also be configured such that the inner transmission shaft 26A, the outer transmission shaft 23bA, and the base portion 25A are integrally formed.

[0186] In the above embodiment, the operation portion is described as including the exterior body 21A and the intermediate member 22A, but the present invention is not limited to this structure. The operation portion may include only the exterior body 21A.

[0187] In the above embodiment, the configuration in which the engaging portion 21bA is formed on the operating portion (one component) 10A and the engaged portion 24A is formed on the transmission shaft (the other component) 23A is described. However, the present invention is not limited to this configuration. The engaging portion may be formed on the transmission shaft (one component) 23A, and the engaged portion may be formed on the operating portion (the other component) 10A.

[0188] While the above embodiments describe a configuration in which the engaging portion and the engaged portion are circular (cylindrical) in top view, the present invention is not limited to this configuration. The engaging portion and the engaged portion may also have corresponding polygonal shapes, for example, when viewed from above. In this case, when the engaging portion and the engaged portion are engaged, the corresponding corners engage with each other in the circumferential direction, thereby restricting relative rotation of the engaging portion and the engaged portion in the circumferential direction. In other words, the corresponding corners constitute rotation stoppers.

[0189] In the above embodiment, the fitting portion, the fitted portion, and the insertion portion are described as being cylindrical, but the present invention is not limited to this structure. As long as at least the fitted portion is cylindrical, the fitting portion may also be cylindrical.

[0190] In the above embodiment, the sleeve 11 is provided with the longitudinal groove 11cA and the hanging tube 52A is provided with the restricting portion 52cA. However, the present invention is not limited to this configuration.

[0191] In the above embodiment, the cartridge 101A is described as being removable from the operating portion 10A, but the present invention is not limited to this configuration. The screw-out container 1A may have a non-removable (disposable) configuration in which the central cavity 12A and / or sleeve 11A are attached to the operating portion 10A. In this case, the inner transmission shaft 26A may be integrally formed with the bottom wall 21aA of the outer body 21A.

[0192] Furthermore, components in the above-described embodiments may be appropriately replaced with known components without departing from the spirit of the present invention, and the above-described modifications may be appropriately combined.

[0193] The technical solution of the present invention is as follows, for example.

[0194] <1> A screw-out container, comprising: An operating portion having a bottomed cylindrical shape; a transmission shaft having a spiral groove extending around the circumference of the container axis and extending upward from the bottom wall of the operating portion; a sleeve disposed inside the operating portion so as to surround the outside of the transmission shaft and provided to be rotatable relative to the transmission shaft in a circumferential direction around the container axis; and The middle cavity is provided inside the sleeve and can move up and down relative to the sleeve as the sleeve rotates relative to the transmission shaft. The middle cavity has: a central cavity body that holds the contents; and a cylinder extending downward from the central cavity body, The cylinder is formed integrally with the cavity body.

[0195] <2> According to the <1> The screw-out container of claim 1, wherein The barrel has: a movable barrel having an engaging protrusion that engages with the spiral groove; and a limiting cylinder, which limits the rotation of the central cavity relative to the sleeve by engaging with the sleeve in the circumferential direction; The movable cylinder and the restricting cylinder are formed integrally with the central cavity body.

[0196] <3> According to the <2> The screw-out container of claim 1, wherein The sleeve is formed with a vertical groove extending in the up-down direction. The restricting cylinder has a rib formed thereon. The rib is provided to be movable up and down in the longitudinal groove and restricts rotation of the central cavity relative to the sleeve by abutting against an inner surface of the longitudinal groove in the circumferential direction.

[0197] <4> According to the <2> Or the screw-out container according to <3>, wherein The middle cavity and the sleeve form a box, and the box is integrally detachable from the operating part through the upper end opening of the operating part. A fitting portion extending in the vertical direction is provided on one of the operating portion and the transmission shaft. A cylindrical engaged portion is formed on the other of the operating portion and the transmission shaft, and the engaging portion is inserted into the engaged portion in the up-down direction, thereby engaging the engaging portion in the engaged portion while limiting rotation of the operating portion around the container axis.

[0198] <5> According to the <2> Or the screw-out container according to <3>, wherein The movable tube is formed into a cylindrical shape and is arranged coaxially with the container axis. The restricting cylinder is configured to surround the movable cylinder. The restricting tube is provided with a deformation restraining portion which is arranged radially closer to the outer peripheral surface of the movable tube than the inner peripheral surface of the restricting tube when the middle cavity is mounted on the sleeve, and restrains deformation of the movable tube toward the outside in the radial direction.

[0199] <6> The screw-out container according to <5>, wherein The deformation suppressing portion is provided on the restricting cylinder so as to be displaceable in the radial direction. The deformation suppressing portion includes a guide protrusion that is pressed inward in the radial direction by the inner surface of the sleeve when the central cavity is mounted on the sleeve through the upper end opening of the sleeve.

[0200] <7> According to the <1> The screw-out container of claim 1, wherein The cylinder includes a hanging cylinder arranged between the outer peripheral surface of the transmission shaft and the inner peripheral surface of the sleeve. The hanging tube has: an engaging protrusion engaging with the spiral groove; and a limiting portion, which limits the rotation of the central cavity relative to the sleeve by engaging with the sleeve in the circumferential direction, Furthermore, the hanging cylinder and the middle cavity are formed as one body.

[0201] <8> According to the <7> The screw-out container of claim 1, wherein When the middle cavity is located at the uppermost position, the outer peripheral surface of the hanging tube is adjacent to or abuts against the inner peripheral surface of the sleeve.

[0202] <9> According to the <7> Or the screw-out container according to <8>, wherein The sleeve is formed with a vertical groove extending in the up-down direction. The restricting portion is provided to be movable up and down in the longitudinal groove, and restricts rotation of the central cavity relative to the sleeve by abutting against an inner surface of the longitudinal groove in a circumferential direction.

[0203] <10> According to the <7> Or the screw-out container according to <8>, wherein The transmission shaft, the sleeve, and the middle cavity constitute a box, and the box is integrally detachable from the operating portion through the upper end opening of the operating portion. A fitting portion extending in the vertical direction is provided on one of the operating portion and the transmission shaft. A cylindrical engaged portion is formed on the other of the operating portion and the transmission shaft, and the engaging portion is inserted into the engaged portion in the up-down direction, so that the engaging portion is engaged with the engaged portion while the rotation of the transmission shaft around the container axis relative to the operating portion is restricted.

[0204] Furthermore, components in the above-described embodiments may be appropriately replaced with known components without departing from the spirit of the present invention, and the above-described modifications may be appropriately combined.

[0205] Industrial applicability According to the present invention, the number of components can be reduced, and a low-cost screw-out container can be provided.

Claims

1. A screw-out container, characterized in that: have: An operating portion having a bottomed cylindrical shape; a transmission shaft having a spiral groove extending around the circumference of the container axis and extending upward from the bottom wall of the operating portion; a sleeve disposed inside the operating portion so as to surround the outside of the transmission shaft and provided to be rotatable relative to the transmission shaft in a circumferential direction around the container axis; and The middle cavity is provided inside the sleeve and can move up and down relative to the sleeve as the sleeve rotates relative to the transmission shaft. The middle cavity has: a central cavity body that holds the contents; and a cylinder extending downward from the central cavity body, The cylinder is formed integrally with the cavity body.

2. The screw-out container according to claim 1, characterized in that: The barrel has: a movable barrel having an engaging protrusion that engages with the spiral groove; and a limiting cylinder, which limits the rotation of the central cavity relative to the sleeve by engaging with the sleeve in the circumferential direction; The movable cylinder and the restricting cylinder are formed integrally with the central cavity body.

3. The screw-out container according to claim 2, characterized in that: The sleeve is formed with a vertical groove extending in the up-down direction. The restricting cylinder has a rib formed thereon. The rib is provided to be movable up and down in the longitudinal groove and restricts rotation of the central cavity relative to the sleeve by abutting against an inner surface of the longitudinal groove in the circumferential direction.

4. The screw-out container according to claim 2 or 3, characterized in that: The middle cavity and the sleeve form a box, and the box is integrally detachable from the operating part through the upper end opening of the operating part. A fitting portion extending in the vertical direction is provided on one of the operating portion and the transmission shaft. A cylindrical engaged portion is formed on the other of the operating portion and the transmission shaft, and the engaging portion is inserted into the engaged portion in the up-down direction, thereby engaging the engaging portion in the engaged portion while limiting rotation of the operating portion around the container axis.

5. The screw-out container according to claim 2 or 3, characterized in that: The movable tube is formed into a cylindrical shape and is arranged coaxially with the container axis. The restricting cylinder is configured to surround the movable cylinder. The restricting tube is provided with a deformation restraining portion which is arranged radially closer to the outer peripheral surface of the movable tube than the inner peripheral surface of the restricting tube when the middle cavity is mounted on the sleeve, and restrains deformation of the movable tube toward the outside in the radial direction.

6. The screw-out container according to claim 5, characterized in that: The deformation suppressing portion is provided on the restricting cylinder so as to be displaceable in the radial direction. The deformation suppressing portion includes a guide protrusion that is pressed inward in the radial direction by the inner surface of the sleeve when the central cavity is mounted on the sleeve through the upper end opening of the sleeve.

7. The screw-out container according to claim 1, characterized in that: The cylinder includes a hanging cylinder arranged between the outer peripheral surface of the transmission shaft and the inner peripheral surface of the sleeve. The hanging tube has: an engaging protrusion engaging with the spiral groove; and a limiting portion, which limits the rotation of the central cavity relative to the sleeve by engaging with the sleeve in the circumferential direction, Furthermore, the hanging cylinder and the middle cavity are formed as one body.

8. The screw-out container according to claim 7, characterized in that: When the middle cavity is located at the uppermost position, the outer peripheral surface of the hanging tube is adjacent to or abuts against the inner peripheral surface of the sleeve.

9. The screw-out container according to claim 7 or 8, characterized in that: The sleeve is formed with a vertical groove extending in the up-down direction. The restricting portion is provided to be movable up and down in the longitudinal groove, and restricts rotation of the central cavity relative to the sleeve by abutting against an inner surface of the longitudinal groove in a circumferential direction.

10. The screw-out container according to claim 7 or 8, characterized in that: The transmission shaft, the sleeve, and the middle cavity constitute a box, and the box is integrally detachable from the operating portion through the upper end opening of the operating portion. A fitting portion extending in the vertical direction is provided on one of the operating portion and the transmission shaft. A cylindrical engaged portion is formed on the other of the operating portion and the transmission shaft, and the engaging portion is inserted into the engaged portion in the up-down direction, so that the engaging portion is engaged with the engaged portion while the rotation of the transmission shaft around the container axis relative to the operating portion is restricted.

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