Sending-out container

Abstract

To provide a sending-out container in which desired sliding resistance can be generated between a sleeve and a spiral shaft member, and which is easily recycled.SOLUTION: In a sending-out container 1, an inner plate arranged inside a sleeve 3 can be sent-out and sent-in by rotating a spiral shaft member 13 arranged inside a sleeve 2 in a circumferential direction around an axis line. The sleeve 3 includes a protrusion part 3a protruding radially inside toward the spiral shaft member 13. The spiral shaft member 13 is arranged at a position lower than the protrusion part 3a provided at the sleeve 3, and includes a protrusion 21 contacting with an inner peripheral surface 3f of the sleeve 3. The protrusion 21 is a protrusion provided on an elastic piece 23 formed by a slit hole 22 provided in the spiral shaft member 13.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a dispensing container. [Background technology]

[0002] A conventional dispensing container is one in which an inner tray located inside a sleeve (outer sleeve) can be fed out and in by rotating a spiral shaft member (fixed shaft member) located inside the sleeve in a circumferential direction around an axis (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-080019 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional dispensing container described above, a protrusion (lower protrusion) on the sleeve is engaged with a circumferential groove on the helical shaft member, thereby rotatably supporting the sleeve while restricting its vertical movement. In addition, a sliding contact portion molded from a thermoplastic resin such as an elastomer is embedded in the circumferential groove. With the conventional dispensing container described above, it is possible to generate a desired sliding resistance between the sleeve and the helical shaft member while restricting the sleeve's vertical movement.

[0005] However, in the conventional dispensing containers described above, the sliding contact portion is embedded in a circumferential groove provided in the helical shaft member, and therefore when the dispensing container is to be disposed of, it is necessary to separate the sliding contact portion from the helical shaft member. Therefore, the conventional dispensing containers described above have room for improvement in terms of recycling.

[0006] An object of the present invention is to provide a dispensing container that can generate a desired sliding resistance between a sleeve and a helical shaft member and that is easy to recycle. [Means for solving the problem]

[0007] (1) The dispensing container of the present invention is a dispensing container that can dispense and insert an inner tray placed inside a sleeve by rotating a helical shaft member placed inside the sleeve in a circumferential direction around an axis, wherein the sleeve has a protrusion that protrudes radially inward toward the helical shaft member, and the helical shaft member has a protrusion that is positioned lower than the protrusion on the sleeve and contacts the inner surface of the sleeve, and the protrusion is provided on an elastic piece formed by a slit hole provided in the helical shaft member.

[0008] (2) In the dispensing container of (1) above, it is preferable that the base portion of the elastic piece is a thin portion having a small thickness.

[0009] (3) In the dispensing container of (2) above, it is preferable that the base portion of the elastic piece is formed into the thin-walled portion by an annular recess provided on the outer surface of the helical shaft member, and that the protrusion provided on the sleeve is accommodated in the annular recess.

[0010] (4) In any one of the dispensing containers (1) to (3) above, fine irregularities may be provided on at least one of the surfaces of the protrusions and the inner circumferential surface of the sleeve that comes into contact with the protrusions.

[0011] (5) In any one of the dispensing containers (1) to (4) above, all of the components may be polyethylene terephthalate components.

[0012] (6) In the dispensing container of any one of (1) to (4) above, it is preferable that all of the components are bioplastic parts. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a dispensing container that can generate a desired sliding resistance between the sleeve and the helical shaft member and that is easy to recycle. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a cross-sectional view showing a dispensing container according to an embodiment of the present invention in a feeding state. [Figure 2] FIG. 2 is a cross-sectional view showing the dispensing container of FIG. 1 in a dispensing state. [Figure 3] 2 is an enlarged cross-sectional view of a region X in FIG. 1. [Figure 4] 2 is a side view showing a helical shaft member of the dispensing container of FIG. 1. FIG. [Figure 5] 5 is a plan view showing the helical shaft member of FIG. 4 from above. FIG. [Figure 6] 5 is an enlarged side view showing an example in which minute irregularities are provided on the protrusions provided on the helical shaft member of FIG. 4, in an area corresponding to region Y of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] A dispensing container according to one embodiment of the present invention will be described below with reference to the drawings.

[0016] In Figure 1, reference numeral 1 denotes a dispensing container according to one embodiment of the present invention. The dispensing container 1 is configured such that a core member C housed in the inner tray 7 is inserted or removed through a dispensing opening A1 formed in the sleeve 3 by extending or retracting an inner tray 7 housed inside the sleeve 3. The core member C is a rod-shaped content. Examples of core members C include cosmetics (lipstick, gloss, lip balm, stick eye shadow, etc.), anti-inflammatory agents and other medications, and adhesives such as glue.

[0017] Fig. 1 shows an initial state in which the inner tray 7 is retracted, and Fig. 2 shows a state in which the inner tray 7 is retracted.

[0018] Here, the "axial direction" refers to the direction in which the central axis O (hereinafter also referred to as "axis O") of the dispensing container 1 extends. In this embodiment, the operating part 2 (exterior body 11, center fixture 12, and helical shaft member 13), sleeve 3, linear motion cylinder 4, first rotating cylinder 5, second rotating cylinder 6, and center tray 7 are arranged coaxially with the axis O as their common central axis.

[0019] Furthermore, "axial direction" can also mean "vertical direction." In this case, "lower side" refers to the side where the operating unit 2 is arranged. In contrast, "feed-in direction" refers to the direction toward the lower side. Furthermore, "upper side" refers to the side where the payout opening A1 of the sleeve 3 is arranged. Furthermore, "pay-out direction" refers to the direction toward the upper side.

[0020] Next, the "rotational direction" refers to the circumferential direction around the axis O. Furthermore, the "radial direction" refers to the direction perpendicular to the axis O. In particular, the "radially inner" refers to the side closer to the axis O, and the "radially outer" refers to the side farther from the axis O.

[0021] The dispensing container 1 is a dispensing container that can dispense and insert the inner plate 7 located inside the sleeve 3 by rotating the helical shaft member 13 located inside the sleeve 3 circumferentially around the axis O.

[0022] The dispensing container 1 of this embodiment comprises an operating unit 2 having a helical shaft member 13, a sleeve 3 arranged on the outside of the helical shaft member 13 and rotatable circumferentially relative to the operating unit 2, a linear-acting cylinder 4 arranged inside the sleeve 3 and whose rotation relative to the sleeve 3 is restricted and which can move up and down, a first swivel cylinder 5 arranged inside the linear-acting cylinder 4 and which can swivel (swivel) up and down about the helical axis 14 of the helical shaft member 13, a second swivel cylinder 6 arranged between the linear-acting cylinder 4 and the first swivel cylinder 5 and whose rotation relative to the linear-acting cylinder 4 is restricted and which can move up and down and can swivel up and down relative to the first swivel cylinder 5, and an inner tray 7 arranged inside the sleeve 3 so as to be movable in the axial direction and connected to the second swivel cylinder 6.

[0023] 1, in this embodiment, the operating unit 2 includes an exterior body 11, a center piece 12, and a helical shaft member 13. In this embodiment, the exterior body 11 includes an exterior tube 11a extending in the vertical direction, a bottom wall 11b closing the rear end of the exterior tube 11a, and a fitting tube 11c protruding upward from the bottom wall 11b. In this embodiment, the exterior tube 11a, the bottom wall 11b, and the fitting tube 11c are integrally molded.

[0024] In this embodiment, the center fixture 12 is a cylindrical member. In this embodiment, the rear end portion 12b of the center fixture 12 is fixed to the inner circumferential surface of the outer tube 11a so that circumferential rotation is restricted. This allows the center fixture 12 to rotate circumferentially together with the outer body 11. Meanwhile, in this embodiment, the front portion 12a of the center fixture 12 protrudes forward beyond the upper end of the outer tube 11a. This allows a cap (not shown) to be fixed to the front portion 12a of the center fixture 12. The center fixture 12 may be formed integrally with the outer tube 11a. Furthermore, as long as the inner circumferential surface of the center fixture 12 is formed in a circular shape when viewed in the vertical direction, the outer tube 11a of the operating unit 2 may have an external shape other than a circle when viewed in the vertical direction.

[0025] In this embodiment, the helical shaft member 13 is fixed to the exterior body 11. In this embodiment, the helical shaft member 13 includes a helical shaft 14 extending in the vertical direction and a base 15 connected to the helical shaft 14. In this embodiment, a first helical portion 14a is provided on the outer circumferential surface of the helical shaft 14. The first helical portion 14a extends so as to spirally wind around the axis O in the vertical direction. The first helical portion 14a is configured by a helical groove or a helical protrusion. In this embodiment, the first helical portion 14a is a helical groove. In this embodiment, the first helical portion 14a is formed in two strips. However, the first helical portion 14a may be formed in one strip or three or more strips.

[0026] Additionally, in this embodiment, the helical shaft member 13 includes a lower inner cylinder 16, a lower outer cylinder 17, and a lower intermediate cylinder 18. In this embodiment, the lower inner cylinder 16, the lower outer cylinder 17, and the lower intermediate cylinder 18 each extend downward from the base 15. In this embodiment, the helical shaft 14, the base 15, the lower inner cylinder 16, the lower outer cylinder 17, and the lower intermediate cylinder 18 are integrally molded.

[0027] In the present embodiment, the helical shaft member 13 is fixed so that its rotation relative to the exterior body 11 is restricted. This allows the helical shaft member 13 to rotate circumferentially together with the exterior body 11 and the center tool 12 as part of the operating unit 10. In the present embodiment, the lower inner tube 16 of the helical shaft member 13 is inserted into the fitting tube 11c of the exterior body 11 and thereby circumferentially engaged with the fitting tube 11c. This allows the helical shaft member 13 to be fixed so that its rotation relative to the exterior body 11 is restricted. Examples of a means for engaging the lower inner tube 16 of the helical shaft member 13 with the fitting tube 11c of the exterior body 11 include spline engagement. Furthermore, in the present embodiment, the fitting portion 11c of the exterior body 11 is inserted into the lower intermediate tube 18 of the helical shaft member 13, thereby allowing the lower intermediate tube 18 of the helical shaft member 13 to be vertically engaged with the fitting tube 11c of the exterior body 11. As a result, the helical shaft member 13 is fixed integrally with the exterior body 11 without being separated in the vertical direction. As a fitting means between the fitting portion 11c of the exterior body 11 and the lower intermediate cylinder 18 of the helical shaft member 13, for example, fitting by a protrusion arranged in the vertical direction can be mentioned.

[0028] In this embodiment, the sleeve 3 has a first protrusion 3a and a second protrusion 3b on its inner circumferential surface. The first protrusion 3a and the second protrusion 3b are arranged at an interval in the up-down direction. In this embodiment, the first protrusion 3a protrudes radially inward from the lower inner circumferential surface of the sleeve 3. In this embodiment, the sleeve 3 has a plurality of first protrusions 3a. The plurality of first protrusions 3a are arranged at intervals in the circumferential direction. The second protrusion 3b protrudes radially inward from the upper inner circumferential surface of the sleeve 3. In this embodiment, the sleeve 3 has a plurality of second protrusions 3b. The second protrusions 3b are arranged at an interval in the circumferential direction so as not to overlap with the first protrusions 3a when viewed in the up-down direction. In this embodiment, the sleeve 3 has two second protrusions 3b. In this embodiment, the two second protrusions 3b are arranged at positions facing each other across the axis O in the radial direction.

[0029] In this embodiment, the sleeve 3 is attached to the operating unit 2 so as to be rotatable relative to the helical shaft member 13. Specifically, the sleeve 3 is attached to the helical shaft member 13 so as to be rotatable relative to the helical shaft member 13. In this embodiment, an annular recess 15a extending annularly in the circumferential direction is provided on the outer peripheral surface of the base 15 of the helical shaft member 13. In this embodiment, a first protrusion 3a provided on the sleeve 3 is fitted into the annular recess 15a so as to be slidable in the circumferential direction. As a result, in this embodiment, the sleeve 3 is attached to the helical shaft member 13 so as to be rotatable in the circumferential direction.

[0030] In this embodiment, the direct-acting cylinder 4 is disposed inside the sleeve 3. In this embodiment, a first guide groove 4a extending in the vertical direction is provided on the outer peripheral surface of the direct-acting cylinder 4. The first guide groove 4a guides the second protrusion 3b provided on the sleeve 3 in the vertical direction. In this embodiment, the direct-acting cylinder 4 has two first guide grooves 4a. The two first guide grooves 4a are disposed at positions corresponding in the circumferential direction to the second protrusion 3b provided on the sleeve 3. The second protrusion 3b is slidably housed in the first guide groove 4a. As a result, the direct-acting cylinder 4 can move in the vertical direction inside the sleeve 3 while being restricted in its circumferential rotation relative to the sleeve 3. That is, in this embodiment, the direct-acting cylinder 4 can move in the vertical direction relative to the sleeve 3 while rotating integrally with the sleeve 3. Note that in this embodiment, the first guide groove 4a is open at the upper end 4e of the direct-acting cylinder 4 but is closed at the lower end 4b of the direct-acting cylinder 4. Therefore, as shown in Figure 2, in this embodiment, when the direct-acting cylinder 4 rises, the second protrusion 3b provided on the sleeve 3 contacts the lower end 4b of the first guide groove 4a provided on the direct-acting cylinder 4 from above, thereby preventing the direct-acting cylinder 4 from falling off the sleeve 3.

[0031] Additionally, in this embodiment, an inward stopper protrusion 4c that protrudes radially inward is provided on the inner circumferential surface at the upper end of the linear motion cylinder 4. Furthermore, in this embodiment, a second guide groove 4d is provided on the inner circumferential surface of the linear motion cylinder 4 at a position different in the circumferential direction from the inward stopper protrusion 4c when viewed in the vertical direction. The second guide groove 4d extends in the vertical direction and is open at both the upper and lower ends of the linear motion cylinder 4.

[0032] In this embodiment, the first swirling cylinder 5 is disposed outside the helical shaft 14 provided on the helical shaft member 13 so as to surround the periphery of the helical shaft 14. In this embodiment, a first convex portion 5a that protrudes radially inward is provided at the lower end of the first swirling cylinder 5. The first convex portion 5a is housed in a first helical-shaped portion 14a provided on the helical shaft 14. As the helical shaft 14 rotates in the circumferential direction, the first convex portion 5a spirally rotates along the first helical-shaped portion 14a, causing the first swirling cylinder 5 to move in the vertical direction relative to the helical shaft 14. In this embodiment, two first convex portions 5a are provided circumferentially spaced apart to match the number of threads of the first helical-shaped portion 14a. In this embodiment, the first convex portion 5a extends at an angle along the first helical-shaped portion 14a.

[0033] In addition, a second helical portion 5b is formed on the outer peripheral surface of the first swirling cylinder 5. The second helical portion 5b extends so as to spirally spiral in the vertical direction around the axis O. However, in this embodiment, the direction of helical rotation (or swirl direction) of the second helical portion 5b provided on the first swirling cylinder 5 is opposite to the direction of helical rotation (or swirl direction) of the first helical portion 14a provided on the helical shaft 14. The second helical portion 5b is formed by a helical groove or a helical protrusion. In this embodiment, the second helical portion 5b is a helical groove. In this embodiment, the second helical portion 5b is formed by two helical grooves. However, like the first helical portion 14a provided on the helical shaft 14, the second helical portion 5b may also have one or three or more helical grooves.

[0034] In this embodiment, the second swivel cylinder 6 is inserted into the linear-acting cylinder 4 so as to be surrounded by the linear-acting cylinder 4 together with the sleeve 3. In this embodiment, a guide protrusion 6a that protrudes radially outward is provided on the outer peripheral surface of the second swivel cylinder 6. In this embodiment, the guide protrusion 6a extends in the vertical direction. In this embodiment, the guide protrusion 6a is housed in a second guide groove 4d provided in the linear-acting cylinder 4. As a result, in this embodiment, the second swivel cylinder 6 can move in the vertical direction within the linear-acting cylinder 4 while being restricted in its circumferential rotation relative to the linear-acting cylinder 4. That is, in this embodiment, the second swivel cylinder 6 can move in the vertical direction relative to the linear-acting cylinder 4 while rotating integrally with the linear-acting cylinder 4. In other words, in this embodiment, the second swivel cylinder 6 can move in the vertical direction relative to the sleeve 3 while rotating integrally with the sleeve 3 via the linear-acting cylinder 4.

[0035] Additionally, in this embodiment, an outward stopper protrusion 6b that protrudes radially outward is formed on the outer peripheral surface of the lower end of the second swivel cylinder 6 at a different circumferential position from the guide protrusion 6a when viewed in the vertical direction. The outward stopper protrusion 6b faces an inward stopper protrusion 4c provided on the linear motion cylinder 4 in the vertical direction. As shown in FIG. 2 , in this embodiment, the outward stopper protrusion 6b comes into contact with the inward stopper protrusion 4c from below, thereby restricting the second swivel cylinder 6 from moving upward relative to the linear motion cylinder 4.

[0036] Additionally, in this embodiment, the second swivel cylinder 6 is disposed outside the first swivel cylinder 5 so as to surround the periphery of the first swivel cylinder 5. In this embodiment, a second convex portion 6c that protrudes radially inward is formed at the lower end of the second swivel cylinder 6. The second convex portion 6c is housed within the second helical portion 5b provided on the first swivel cylinder 5. As the helical shaft 14 provided on the helical shaft member 13 rotates in the circumferential direction, the second convex portion 6c spirally rotates along the second helical portion 5b, causing the second swivel cylinder 6 to move up and down relative to the helical shaft 14. In this embodiment, two second convex portions 6c are provided circumferentially spaced apart to match the number of threads of the second helical portion 5b. The second convex portions 6c extend at an angle along the second helical portion 5b.

[0037] In the dispensing container 1 of Fig. 1, for example, when the sleeve 3 is pressed and the operating unit 2 is rotated in one circumferential direction around the axis O, the inner tray is dispensed from inside the sleeve 3 as shown in Fig. 2. This makes it possible to remove the core member C. In addition, in the dispensing container 1 of Fig. 2, for example, when the sleeve 3 is pressed and the operating unit 2 is rotated in the other circumferential direction around the axis O, the inner tray is dispensed into the sleeve 3 as shown in Fig. 1. This makes it possible to store the core member C.

[0038] Here, the sleeve 3 is provided with a first protrusion (protrusion) 3a that protrudes radially inward toward the helical shaft member 13.

[0039] In addition, the helical shaft member 13 is provided with a protrusion 21 that is disposed at a position lower than the first protrusion 3 a provided on the sleeve 3 and that comes into contact with the inner circumferential surface of the sleeve 3 .

[0040] 3 shows an enlarged view of region X in FIG. 1. In this embodiment, the protrusion 21 is provided on the lower outer cylinder 17 of the helical shaft member 13. In this embodiment, a bulge 17a that protrudes radially outward is provided at the lower end of the lower outer cylinder 17. In this embodiment, the lower end 3e of the sleeve 3 is supported from below by a support surface 17e provided on the lower outer cylinder 17. In this embodiment, the protrusion 21 is in contact with an inner circumferential surface 3f of the sleeve 3 that is disposed between the first protrusion 3a of the sleeve 3 and the lower end 3e of the sleeve 3 so as to press the inner circumferential surface 3f radially outward.

[0041] Additionally, the protrusion 21 is a protrusion provided on the elastic piece 23, which is formed by a slit hole 22 provided in the helical shaft member 13. The slit hole 22 penetrates the helical shaft member 13 in the radial direction. In this embodiment, the slit hole 22 penetrates the lower outer cylinder 17 provided on the helical shaft member 13 in the radial direction.

[0042] Fig. 4 shows the helical shaft member 13 from a side view. As shown in Fig. 4, in this embodiment, the slit hole 22 is a U-shaped slit hole when viewed in the vertical direction. In this embodiment, the elastic piece 23 has a root portion 24 connected to the base 15 and a main body portion 25 on which the protrusion 21 is provided. The main body portion 25 is connected to the base 15 via the root portion 24.

[0043] In this embodiment, the base portion 24 of the elastic piece 23 is a thin portion.

[0044] In this embodiment, the root portion 24 of the elastic piece 23 is formed into the thin portion by an annular recess 15a provided on the outer peripheral surface of the helical shaft member 13. As shown in Fig. 4, in this embodiment, the annular recess 15a extends so as to cross the root portion 24 of the elastic piece 23. As a result, in this embodiment, as shown in Fig. 3, the root portion 24 of the elastic piece 23 is a thin portion having a small thickness in the radial direction. A first protrusion 3a provided on the sleeve 3 is housed in the annular recess 15a.

[0045] FIG. 5 shows the helical shaft member 13 from above. In this embodiment, the helical shaft member 13 has four protrusions 21. As shown in FIG. 5, in this embodiment, the four protrusions 21 are arranged at equal intervals in the circumferential direction when viewed in the up-down direction. Specifically, the four protrusions 21 are arranged at 90-degree intervals around the axis O when viewed in the up-down direction. The slit holes 22 can be formed, for example, during molding, by a gap between an outer mold that forms the outer shape of the helical shaft member 13 and an inner mold that forms the inner shape of the helical shaft member 13.

[0046] 3, protrusions 21 come into contact with the inner circumferential surface of sleeve 3 so as to press from the radially outer side, thereby providing sliding resistance to circumferential rotation when operating unit 2 and sleeve 3 are rotated relative to each other. The sliding resistance provides a feeling of operation when operating dispensing container 1, or serves to position operating unit 2 and sleeve 3 in the circumferential direction.

[0047] In contrast, the dispensing container described in the aforementioned Patent Document 1 obtains the desired sliding resistance by embedding a sliding contact portion molded from a thermoplastic resin such as elastomer in the contact area with the protrusion 21.

[0048] However, the dispensing container described in Patent Document 1 has a sliding contact portion embedded in the spiral shaft member 13. Therefore, when disposing of the dispensing container, it is necessary to separate the spiral shaft member from the sliding contact portion. Furthermore, in the case of small parts such as the sliding contact portion, the separation process is difficult, and recycling may not be possible at all. Therefore, there is room for improvement in the recycling of the conventional dispensing containers described above.

[0049] According to the dispensing container 1, the helical shaft member 13 is provided with the protrusion 21, and the helical shaft member 13 is provided with the slit hole 22 so as to form the protrusion 21, so that the protrusion 21 becomes part of the elastic piece 23 that is provided integrally with the helical shaft member 13. This allows the protrusion 21 provided on the helical shaft member 13 to come into pressing contact with the inner circumferential surface 3f of the sleeve 3 without using a material different from that of the helical shaft member 13.

[0050] Therefore, according to the dispensing container 1, it is possible to generate a desired sliding resistance between the sleeve 3 and the helical shaft member 13, and it is easy to recycle when disposed of.

[0051] In addition, according to the dispensing container 1, by appropriately selecting the shape or dimensions of the slit hole 22, a desired sliding resistance can be easily set.

[0052] In this embodiment, the base portion 24 of the elastic piece 23 where the protrusion 21 is provided is a thin portion. In this case, sliding resistance is reduced, allowing for smooth feeding and retraction operations. In addition, in this case, assembly of the sleeve 3 and the helical shaft member 13 is facilitated.

[0053] Furthermore, in this embodiment, base portion 24 of elastic piece 23 is formed in the thin-walled portion by annular recess 15a provided on the outer peripheral surface of helical shaft member 13, and annular recess 15a accommodates first protrusion 3a provided on sleeve 3. In this case, it is possible to prevent operating unit 2 and sleeve 3 from coming off in the up-down direction, while shortening the entire dispensing container 1 in the up-down direction, thereby making the entire dispensing container 1 more compact.

[0054] In the dispensing container 1 according to this embodiment, all of the components can be bioplastic parts made from bioplastics. Specifically, all of the components, including the sleeve 3, the linear motion cylinder 4, the first rotating cylinder 5, the second rotating cylinder 6, the inner tray 7, the outer casing 11, the inner fixture 12, and the spiral shaft member 13, are bioplastic parts. Examples of bioplastics include biomass plastics (such as biopolyethylene terephthalate) and biodegradable plastics. In this case, recyclability is excellent. However, the components are not limited to bioplastic parts. For example, the components can be parts molded from petroleum-derived thermoplastic resins such as PET (polyethylene terephthalate). It is particularly preferable to construct all of the components from the same type of resin.

[0055] Incidentally, when it is desired to more precisely adjust the sliding resistance generated between the sleeve 3 and the helical shaft member 13 in accordance with the user's requirements, it is possible to fine-tune the amount of contact (tightening amount) between the protrusion 21 provided on the helical shaft member 13 and the inner surface of the sleeve 3 with which the protrusion 21 comes into contact.

[0056] However, it is not easy to fine-tune the sliding resistance by fine-tuning the contact amount. For example, even if the contact amount is adjusted slightly larger, the sliding resistance may become too strong. Conversely, even if the contact amount is adjusted slightly smaller, there may be almost no sliding resistance.

[0057] In contrast, if fine irregularities are provided on at least one of the surface of the protrusion 21 and the inner surface of the sleeve 3 that comes into contact with the protrusion 21, it is easy to obtain finer sliding resistance according to the user's requirements.

[0058] FIG. 6 shows an example in which minute irregularities 26 are provided on the protrusions 21 provided on the helical shaft member 13 of FIG. 4, enlarged and corresponding to the area Y of FIG.

[0059] In FIG. 6, the cross-hatched region has fine irregularities 26. In this example, the fine irregularities 26 are provided on the main body portion 25 of the protrusion 21. Examples of the fine irregularities 26 include a matte pattern and a streaked pattern. The fine irregularities 26 can be obtained by, for example, applying a texturing process to the outer surface (contact surface) of the main body portion 25 of the protrusion 21. Examples of texturing processes include a transfer process of fine irregularities provided on the inner surface of a mold (for example, the portion of the cavity surface that forms the outer surface of the protrusion 21), a chemical process by etching, a sandblasting process, and a polishing process.

[0060] In Fig. 4, the fine irregularities 26 are provided only on the main body portion 25, but they may be provided all the way up to the base portion 24. Also, in Fig. 4, the fine irregularities 26 are provided on the surface of the protrusion 21, but the fine irregularities 26 may be provided on the inner circumferential surface of the sleeve 3 that comes into contact with the protrusion 21. Furthermore, the fine irregularities 26 may be provided on both the surface of the protrusion 21 and the inner circumferential surface of the sleeve 3 that comes into contact with the protrusion 21.

[0061] By providing fine irregularities 26 on at least one of the surface of the protrusions 21 and the inner circumferential surface of the sleeve 3 that comes into contact with the protrusions 21, it is possible to easily obtain a finer sliding resistance that meets the user's requirements without finely adjusting the amount of contact (tightening amount) between the protrusions 21 and the inner circumferential surface of the sleeve 3. In particular, it is preferable to obtain the fine irregularities 26 by texturing. In this case, it is possible to easily obtain a finer sliding resistance that meets the user's requirements simply by appropriately selecting from various processes used for texturing.

[0062] All of the components of the dispensing container 1 are preferably made of polyethylene terephthalate (PET). If all of the components are molded from the same resin, the sliding resistance that occurs between the outer surfaces of the protrusions 21 and the inner circumferential surface of the sleeve 3 tends to be strong, and this tendency is particularly pronounced when all of the components of the dispensing container 1 are made of PET. Therefore, if all of the components of the dispensing container 1 are made of PET, the sliding resistance can be reduced by providing fine irregularities 26 on at least one of the surfaces of the protrusions 21 and the inner circumferential surface of the sleeve 3 that comes into contact with the protrusions 21.

[0063] As described above, exemplary embodiments of the present invention have been described above, but the present invention is not limited to these embodiments and can be modified in various ways without departing from the spirit of the present invention. As long as the dispensing container 1 is configured so that the inner tray 7 arranged inside the sleeve 3 can be advanced and advanced by rotating the helical shaft member 13 arranged inside the sleeve 3 in the circumferential direction about the axis O, and is provided with a protrusion 21 that is positioned below the protrusion (3a) provided on the sleeve 3 and contacts the inner peripheral surface of the sleeve 3, the dispensing mechanism using the linear moving cylinder 4, the first rotating cylinder 5, and the second rotating cylinder 6 can be modified as appropriate. [Explanation of symbols]

[0064] 1: dispensing container, 2: operating part, 3: sleeve, 3a: first protrusion, 3b: second protrusion, 4: linear motion cylinder, 4a: first guide groove, 4b: lower end, 4c: inward stopper protrusion, 4d: first guide groove, 4e: upper end, 5: first swivel cylinder, 5a: first protrusion, 5b: second spiral-shaped part, 6: second swivel cylinder, 6a: guide projection, 6b: outward stopper protrusion, 6c: second protrusion, 7: inner tray, 11: exterior body, 11a: exterior cylinder, 11b: bottom wall, 11c: fitting cylinder, 12: center part, 13: spiral shaft member, 14: spiral shaft, 14a: spiral-shaped part, 15: base, 15a: annular recess, 16: Lower inner cylinder, 17: Lower outer cylinder, 18: Lower intermediate cylinder, 21: Protrusion, 22: Slit hole, 23: Elastic piece, 24: Base part, 25: Main body part, 26: Fine irregularities (fine irregularities), A1: Feed opening, C: Core member

Claims

1. A dispensing container that can feed and retract an inner tray disposed inside a sleeve by rotating a spiral shaft member disposed inside the sleeve in a circumferential direction around an axis, the sleeve includes a protrusion that protrudes radially inward toward the helical shaft member, the helical shaft member has a protrusion that is disposed below the protrusion provided on the sleeve and that contacts an inner peripheral surface of the sleeve, The protrusion is a protrusion provided on an elastic piece formed by a slit hole provided in the spiral shaft member.

2. 2. The dispensing container according to claim 1, wherein the base portion of the elastic piece is a thin portion having a small thickness.

3. 3. The dispensing container according to claim 2, wherein the base portion of the elastic piece is formed in the thin-walled portion by an annular recess provided on the outer peripheral surface of the helical shaft member, and the protrusion provided on the sleeve is housed in the annular recess.

4. 2. The dispensing container according to claim 1, wherein at least one of the surfaces of the protrusions and the inner circumferential surface of the sleeve that comes into contact with the protrusions has minute irregularities.

5. 5. The dispensing container of claim 4, wherein all of the components are polyethylene terephthalate components.

6. 5. The dispensing container according to claim 1, wherein all of the components are bioplastic components.

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