Delivery container

Abstract

To provide a delivery container capable of improving appearance.SOLUTION: A delivery container comprises: a bottomed cylindrical exterior body; a transmission shaft which has a spiral groove and extends in a container axis; a sleeve which is rotatable to the transmission shaft; and an inner tray which is vertically movable to the sleeve following rotation of the sleeve to the transmission shaft. The sleeve has: a cylinder part inserted into the exterior body; a parting line which is formed of mating surfaces of a molding tool at a part which is below the upper end opening edge of the exterior body; a first protrusion part which protrudes inward of a radial direction which crosses the container axis, from the part below the upper end opening edge of the exterior body in the cylinder part; and a gate mark provided on a position overlapping to the first protrusion part in view from the radial direction, on the outer peripheral surface of the cylinder part.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a feeding container.

Background Art

[0002] The feeding container includes a bottomed cylindrical operation part, a sleeve that is rotatably supported around the container axis inside the operation part and integrally formed of a resin material, and an inner plate provided inside the sleeve for holding a rod-shaped content (see, for example, Patent Document 1 below). In the feeding container, when the operation part and the sleeve are relatively rotated, the inner plate moves up and down inside the sleeve, and the rod-shaped content advances and retreats through the sleeve.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, since the sleeve is generally formed to be long in the axial direction (vertical direction), it is generally formed by a mold that can be separated in the radial direction. Therefore, parting lines formed at the mating surfaces of the mold are linearly formed over the entire axial length of the sleeve at positions facing each other in the radial direction on the outer peripheral surface of the sleeve. In this case, the parting line is exposed to the outside in the portion of the sleeve that protrudes upward from the operation part. Therefore, there is still room for improvement in terms of improving the aesthetics in the conventional feeding container.

[0005] The present invention provides a feeding container capable of improving aesthetics.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention adopts the following aspects. A feeding container according to an aspect of the present invention includes a bottomed cylindrical outer body, a spiral groove extending around a container axis, a transmission shaft extending upward from the bottom wall of the outer body, and a sleeve rotatably provided around the container axis with respect to the transmission shaft and integrally formed of a resin material. The feeding container further includes a middle plate provided inside the sleeve and vertically movable with respect to the sleeve as the sleeve rotates with respect to the transmission shaft. The sleeve is inserted inside the outer body so as to surround the outside of the transmission shaft in a state where a part thereof protrudes upward with respect to the outer body. The sleeve includes a cylindrical portion, a parting line formed by a mating surface of a mold in a portion of the cylindrical portion located below the upper end opening edge of the outer body, and a first protrusion that protrudes radially inward intersecting the container axis from a portion of the cylindrical portion located below the upper end opening edge of the outer body and engages with the middle plate in the circumferential direction to restrict the rotation of the sleeve with respect to the middle plate. The sleeve further includes a gate mark provided at a position overlapping the first protrusion when viewed in the radial direction on the outer peripheral surface of the cylindrical portion.

[0007] According to this aspect, by forming a parting line in a portion of the cylindrical portion located below the upper end opening edge of the outer body, the entire portion of the outer peripheral surface of the sleeve located above the upper end opening edge of the outer body can be formed into a smooth surface without unevenness. Thereby, the aesthetic appearance of the feeding container can be improved. In particular, in this aspect, since a gate mark is provided at a position overlapping the first protrusion when viewed in the radial direction on the outer peripheral surface of the cylindrical portion, a gate is set at a position overlapping a portion (maximum wall thickness portion) of the sleeve where the upper protrusion is formed when viewed in the radial direction. Thereby, the molten resin filled into the mold through the gate can flow smoothly in the mold. Therefore, it is easy to spread the molten resin throughout the mold in the vertical direction.

[0008] In the feeding container according to the above aspect, it is preferable that the protruding amount of the first protrusion from the cylindrical portion in the radial direction gradually decreases upward. According to this aspect, since the protruding amount of the first protrusion from the cylindrical portion in the radial direction gradually decreases upward, the molten resin flowing into the mold through the gate is easily guided upward with respect to the first protrusion. As a result, the moldability of the sleeve can be improved without increasing the wall thickness of the entire cylindrical portion.

[0009] In the feeding container according to the above aspect, it is preferable that a recess opening on the outer peripheral surface of the cylindrical portion is formed in a portion of the cylindrical portion located below the first protrusion. According to this aspect, the sleeve is formed in a state where the portion of the mold (lower mold) that forms the recess is engaged with the recess. As a result, when the mold is demolded, it becomes easier to separate the upper mold from the lower mold while securely holding the molded product of the sleeve with the lower mold. In this case, it is not necessary to provide a taper for improving demoldability, or the taper can be made smaller. Thereby, the degree of freedom in the design of the sleeve can be improved.

[0010] In the feeding container according to the above aspect, a second protrusion protruding inward in the radial direction is formed in a portion of the cylindrical portion that overlaps the recess when viewed in the radial direction. The outer package includes an insertion portion that protrudes upward from the bottom wall of the outer package and is inserted into the cylindrical portion. A circumferential groove that opens outward in the radial direction and extends over the entire circumference in the circumferential direction is formed in the insertion portion. The second protrusion is preferably accommodated in the circumferential groove so as to be movable in the circumferential direction within the circumferential groove. According to this aspect, since the second protrusion is accommodated in the circumferential groove so as to be movable in the circumferential direction, it is possible to regulate the vertical movement of the sleeve with respect to the outer package and stabilize the circumferential movement of the sleeve with respect to the outer package. Moreover, since the second protrusion is formed at a position that overlaps the recess when viewed in the radial direction of the cylindrical portion, a decrease in the wall thickness of the sleeve due to the formation of the recess can be suppressed. Thereby, the moldability of the sleeve can be improved.

Advantages of the Invention

[0011] According to the present invention, the aesthetics can be improved.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. The payout container 1 shown in FIG. 1 pays out a rod-shaped content (not shown) for use. Examples of the rod-shaped content include cosmetics (such as lipstick, lip cream, stick eyeshadow, etc.), drugs, glue, and the like. Each component of the payout container 1 is an injection molded product made of a resin material such as an olefin resin unless otherwise specified.

[0014] The feeding container 1 includes an operation unit 10, a sleeve 11, an inner dish 12, and a cap 13. The operation unit 10, the sleeve 11, and the inner dish 12 are arranged such that their respective central axes are located on a common axis. Hereinafter, the common axis is referred to as the container axis O, and the direction along the container axis O is referred to as the vertical direction. In a plan view seen from the vertical direction, the direction intersecting the container axis O is referred to as the radial direction, and the direction of orbiting around the container axis O is referred to as the circumferential direction. In this case, among the feeding container 1, the top wall side of the cap 13 in the vertical direction is referred to as upward, and the bottom wall (bottom wall 21a of the outer cylinder 21) side of the operation unit 10 is referred to as downward. Also, among the circumferential direction, the direction in which the content is raised is referred to as the feeding direction, and the direction in which the content is lowered is referred to as the accommodating direction.

[0015] The operation unit 10 constitutes the lower outer portion of the feeding container 1. The operation unit 10 is formed in a bottomed cylindrical shape that is arranged coaxially with the container axis O as a whole. The operation unit 10 includes an outer body 20 having an outer cylinder 21 and an inner member 22, and a feeding member 23.

[0016] The outer cylinder 21 is integrally formed in a bottomed cylindrical shape. A fitting portion 21b that extends upward is formed on the bottom wall 21a of the outer cylinder 21. The fitting portion 21b is formed in a cylindrical shape that is arranged coaxially with the container axis O.

[0017] The inner member 22 is formed in a cylindrical shape that is arranged coaxially with the outer cylinder 21. The inner member 22 is fitted into the outer cylinder 21 from above inside the outer cylinder 21. The inner member 22 is provided so as not to be rotatable in the circumferential direction with respect to the outer cylinder 21 in a state where the upper end portion protrudes upward from the outer cylinder 21. The inner member 22 may be integrally formed with the outer cylinder 21. Also, in the operation unit 10, if the inner peripheral surface of the inner member 22 is formed in a circular shape in a plan view, the planar view shape of the peripheral wall 21c of the outer cylinder 21 may be a shape other than a circular shape.

[0018] The feeding member 23 supports the inner dish 12 so as to be vertically movable inside the outer cylinder 21. The feeding member 23 includes a fixed shaft member 23a and an outer transmission shaft (transmission shaft) 23b. The fixed shaft member 23a is provided so as not to be rotatable in the circumferential direction with respect to the outer casing 21. Specifically, the fixed shaft member 23a includes a fitted portion (insertion portion) 24, a pedestal portion 25, an inner transmission shaft (transmission shaft) 26, and a lower cylindrical portion 27.

[0019] The fitted portion 24 is formed in a cylindrical shape coaxially arranged with the container axis O. Inside the fitted portion 24, a fitting portion 21b is undercut and fitted. At the lower end portion of the fitted portion 24, an overhanging portion 24a that protrudes outward in the radial direction is formed. At the upper portion of the fitted portion 24, a circumferential groove 24b is formed. The circumferential groove 24b opens on the outer peripheral surface of the fitted portion 24 and extends over the entire circumference in the circumferential direction on the outer peripheral surface of the fitted portion 24. Inside the circumferential groove 24b, a sliding contact portion 24c is embedded. The sliding contact portion 24c extends over the entire circumference inside the sliding contact portion 24c. The sliding contact portion 24c is made of a soft material that is softer than the material of the fixed shaft member 23a (for example, PP, etc.), has a higher elastic modulus than the fixed shaft member 23a, and has a higher friction coefficient than the fixed shaft member 23a. The sliding contact portion 24c is fixed to the fixed shaft member 23a, for example, by two-color molding a thermoplastic resin such as an elastomer together with the fixed shaft member 23a. However, the sliding contact portion 24c may be fixed to the fixed shaft member 23a by insert molding the fixed shaft member 23a with nitrile rubber, butyl rubber, or silicone rubber, etc. as an insert. In addition, the sliding contact portion 24c may be interposed between the sleeve 11 and the outer casing 21.

[0020] The pedestal portion 25 protrudes radially inward from the upper end opening edge of the fitted portion 24. The pedestal portion 25 is formed in an annular shape coaxially arranged with the container axis O. The inner transmission shaft (transmission shaft) 26 extends upward from the inner peripheral edge of the pedestal portion 25. The inner transmission shaft 26 is formed in a cylindrical shape coaxially arranged with the container axis O. On the outer peripheral surface of the inner transmission shaft 26, an inner spiral groove (spiral groove) 26a is formed. The inner spiral groove 26a extends spirally upward as it goes in the feeding direction. In the present embodiment, two inner spiral grooves 26a are formed. However, the inner spiral groove 26a may be one, or three or more.

[0021] The lower cylindrical portion 27 is formed in a cylindrical shape arranged coaxially with the container axis O. In a state where the fitting portion 21b is fitted into the fitted portion 24, the lower cylindrical portion 27 is inserted into the fitting portion 21b. The lower cylindrical portion 27 and the fitting portion 21b are engaged with each other in the circumferential direction, thereby restricting the relative rotation of the fixed shaft member 23a with respect to the exterior body 20.

[0022] The outer transmission shaft 23b surrounds the inner transmission shaft 26 around the inner transmission shaft 26 on the outside of the inner transmission shaft 26. At the lower end portion of the outer transmission shaft 23b, a first engaging protrusion 31 protruding radially inward is formed. The first engaging protrusion 31 is accommodated (engaged) in the inner spiral groove 26a of the inner transmission shaft 26. As the outer transmission shaft 23b rotates circumferentially with respect to the inner transmission shaft 26, the first engaging protrusion 31 moves spirally in the inner spiral groove 26a, thereby moving the outer transmission shaft 23b up and down with respect to the inner transmission shaft 26. In the present embodiment, two first engaging protrusions 31 are provided at intervals in the circumferential direction in accordance with the number of the inner spiral grooves 26a. Each first engaging protrusion 31 extends obliquely along the inner spiral groove 26a.

[0023] An outer spiral groove 32 is formed on the outer peripheral surface of the outer transmission shaft 23b. The outer spiral groove 32 extends spirally upward as it goes in the feeding direction. In the present embodiment, two outer spiral grooves 32 are formed. However, the outer spiral groove 32 may be one or three or more.

[0024] As shown in FIGS. 1, 3, and 4, the sleeve 11 is provided inside the operation portion 10 so as to be rotatable in the circumferential direction with respect to the operation portion 10. The sleeve 11 includes a cylindrical portion 41, a lower protruding portion (second protruding portion) 42, and an upper protruding portion (first protruding portion) 43. The cylindrical portion 41 is arranged coaxially with the container axis O. The cylindrical portion 41 is inserted into the outer casing 20 in a state where the upper part protrudes upward from the outer casing 20. Specifically, the lower part of the cylindrical portion 41 is inserted into the outer casing 20 through between the inner fitting 22 and the pedestal portion 25 inside the inner fitting 22. Therefore, the lower part of the cylindrical portion 41 surrounds the periphery of the feeding member 23. The lower edge of the cylindrical portion 41 is supported from below by the overhanging portion 24a. As shown in FIG. 2, among the cylindrical portion 41, the dimension in the vertical direction of the portion protruding from the outer casing 20 is larger than the dimension in the vertical direction of the portion inserted into the outer casing 20. However, among the cylindrical portion 41, the dimension in the vertical direction of the portion protruding from the outer casing 20 may be smaller than the dimension in the vertical direction of the portion inserted into the outer casing 20. The upper edge of the cylindrical portion 41 is inclined with respect to the container axis O above the outer casing 20.

[0025] As shown in FIGS. 4 and 5, the lower protruding portion 42 protrudes radially inward at the lower end portion of the cylindrical portion 41. The lower protruding portion 42 is formed in a trapezoidal shape or a triangular shape in a longitudinal sectional view along the vertical direction. In the illustrated example, the protruding amount of the lower protruding portion 42 from the cylindrical portion 41 gradually increases as it goes upward. Also, among the surfaces of the lower protruding portion 42, the surface facing upward is formed as an inclined surface extending radially outward as it goes upward, or an inclined surface extending linearly in the radial direction. In the present embodiment, a plurality (for example, four) of the lower protruding portions 42 are formed at intervals in the circumferential direction. Note that the lower protruding portion 42 may be continuously formed over the entire circumference of the cylindrical portion 41.

[0026] As shown in FIG. 1, each lower protruding portion 42 is housed in the circumferential groove 24b. Thereby, the sleeve 11 is supported by the fixed shaft member 23a so as to be rotatable in the circumferential direction. Further, the vertical movement of the sleeve 11 with respect to the outer casing 20 is restricted by the contact of each lower protruding portion 42 with the upper end opening edge and the lower end opening edge of the circumferential groove 24b.

[0027] As shown in FIGS. 4 and 5, in the cylindrical portion 41, recesses 44 are formed at positions overlapping with the respective lower protrusions 42 when viewed in the radial direction. The recesses 44 reduce the wall thickness of the portion of the cylindrical portion 41 where the lower protrusions 42 are formed, and in a longitudinal sectional view along the vertical direction, they are recessed from the outer peripheral surface of the cylindrical portion 41 following the shape of the lower protrusions 42. In the illustrated example, the entire recess 44 overlaps the lower protrusion 42 when viewed in the radial direction. However, a part of the recess 44 in the vertical direction and the circumferential direction may overlap the lower protrusion 42 when viewed in the radial direction, or it may be offset from the lower protrusion 42.

[0028] As shown in FIG. 2, the upper protrusion 43 projects radially inward from a portion of the cylindrical portion 41 that is below the center in the vertical direction, below the upper edge of the middle member 22 (outer body 20), and above the lower protrusion 42. The portion of the sleeve 11 where the upper protrusion 43 is formed is the maximum wall thickness portion where the wall thickness of the sleeve 11 is the thickest.

[0029] As shown in FIGS. 4 and 6, the upper protrusion 43 is formed in a trapezoidal or triangular shape in a sectional view along the vertical direction. As shown in FIG. 6, on the surface of the upper protrusion 43, the portion located above the top 43a constitutes an upper surface portion 43b formed as an inclined surface or a curved surface where the amount of protrusion from the cylindrical portion 41 gradually decreases as it goes upward. On the surface of the upper protrusion 43, the portion located below the top 43a constitutes a lower surface portion 43c formed as an inclined surface or a curved surface where the amount of protrusion from the cylindrical portion 41 gradually decreases as it goes downward. The angle formed between the upper surface portion 43b of the upper protrusion 43 and the inner peripheral surface of the cylindrical portion 41 is smaller than the angle formed between the lower surface portion 43c and the inner peripheral surface of the cylindrical portion 41. In the illustrated example, the vertical length of the upper protrusion 43 is longer than the vertical length of the lower protrusion 42. Note that the lower surface portion 43c may extend linearly in the radial direction.

[0030] As shown in FIG. 4, a pair of upper protrusions 43 are provided at positions in the cylindrical portion 41 that face each other in the radial direction and do not overlap with the lower protrusion 42 when viewed from the vertical direction. The surface of the upper protrusion 43 is formed into a protruding curved surface that protrudes inward in the radial direction when viewed from the vertical direction. That is, the amount of protrusion of the upper protrusion 43 from the cylindrical portion 41 gradually decreases toward both sides in the circumferential direction. Also, the circumferential length of the upper protrusion 43 is shorter than the circumferential length of the lower protrusion 42.

[0031] As shown in FIG. 1, the middle plate 12 is provided so as to be movable in the vertical direction with respect to the sleeve 11 while being restricted from rotating in the circumferential direction with respect to the sleeve 11 within the sleeve 11. The middle plate 12 includes an outer movable cylinder 51 and a middle plate main body 52.

[0032] The outer movable cylinder 51 is provided so as to be vertically movable with respect to the sleeve 11 while being restricted from rotating in the circumferential direction with respect to the sleeve 11. The outer movable cylinder 51 is arranged coaxially with the container axis O. The vertical length of the outer movable cylinder 51 is shorter than the vertical length of the sleeve 11. When the outer movable cylinder 51 is at the lowermost end position, it is close to or in contact with the outer peripheral portion of the pedestal portion 25 from above.

[0033] A first regulating groove 51a that opens on the outer peripheral surface is formed in the outer movable cylinder 51. The first regulating groove 51a extends in the vertical direction at a position facing the upper protrusion 43 in the outer movable cylinder 51 in the radial direction. The upper protrusion 43 is accommodated in the first regulating groove 51a. The outer movable cylinder 51 guides the vertical movement of the upper protrusion 43 while restricting the circumferential movement of the upper protrusion 43 within the first regulating groove 51a. In the present embodiment, the first regulating groove 51a is open at the upper edge of the outer movable cylinder 51, but is not open at the lower edge of the outer movable cylinder 51. Therefore, when the outer movable cylinder 51 rises, the upper protrusion 43 abuts against the lower end surface of the first regulating groove 51a from above, thereby restricting the upper protrusion 43 from falling out of the first regulating groove 51a.

[0034] At the upper end of the outer movable cylinder 51, an outer stopper protrusion 51b that protrudes radially inward is formed. In the outer movable cylinder 51, at a position different from the outer stopper protrusion 51b in the circumferential direction, a second regulating groove 51c that opens on the inner circumferential surface of the outer movable cylinder 51 is formed. The second regulating groove 51c extends in the vertical direction and is open at both the upper and lower end edges of the outer movable cylinder 51.

[0035] The middle plate body 52 includes a content holding portion 55 and an inner movable cylinder 56. In the present embodiment, the content holding portion 55 and the inner movable cylinder 56 are integrally formed. The content holding portion 55 is formed in a bottomed cylindrical shape coaxial with the container axis O. The content holding portion 55 is accommodated in a portion above the inner transmission shaft 26 inside the sleeve 11. The content holding portion 55 is filled with the content. The content is filled in a state of protruding upward from the content holding portion 55.

[0036] The inner movable cylinder 56 extends downward from the bottom wall of the content holding portion 55 in a state of being arranged coaxially with the container axis O. The inner movable cylinder 56 is inserted inside the outer movable cylinder 51 and surrounds the outer transmission shaft 23b. On the inner movable cylinder 56, a ridge portion 56a that protrudes radially outward is formed. The ridge portion 56a extends in the vertical direction on the outer circumferential surface of the inner movable cylinder 56. The ridge portion 56a is accommodated in the second regulating groove 51c. The middle plate body 52 is restricted from rotating with respect to the outer movable cylinder 51 in a state where the upward and downward movement with respect to the outer movable cylinder 51 is allowed by the ridge portion 56a coming into contact with the inner surface of the second regulating groove 51c in the circumferential direction.

[0037] At the lower end of the inner movable cylinder 56, at a position different from the ridge portion 56a in the circumferential direction, an inner stopper protrusion 56b that protrudes radially outward is formed. The inner stopper protrusion 56b faces the outer stopper protrusion 51b in the vertical direction. The middle plate body 52 is restricted from moving upward with respect to the outer movable cylinder 51 when the inner stopper protrusion 56b abuts against the outer stopper protrusion 51b from below.

[0038] At the lower end of the inner movable cylinder 56, a second engaging projection 56c protruding radially inward is formed. The second engaging projection 56c is accommodated (engaged) in the outer spiral groove 32. As the inner movable cylinder 56 rotates circumferentially with respect to the outer transmission shaft 23b, the second engaging projection 56c moves spirally within the outer spiral groove 32, causing the inner movable cylinder 56 to move up and down with respect to the outer transmission shaft 23b. In the present embodiment, two second engaging projections 56c are provided at intervals in the circumferential direction according to the number of the outer spiral grooves 32. Each second engaging projection 56c extends obliquely along the outer spiral groove 32.

[0039] The cap 13 is formed in a toped cylindrical shape arranged coaxially with the container axis O. The middle plate 12 is detachably attached to the cap 13 with the upper part of the sleeve 11 inserted therethrough.

[0040] Next, the operation of the above-described feeding container 1 will be described. In the following description, first, the usage method of the feeding container 1 will be described. When using the feeding container 1, first remove the cap 13 from the exterior body 20. Next, grasp the sleeve 11 and the outer cylinder 21 respectively, and relatively rotate the exterior body 20 and the sleeve 11 in the feeding direction. At this time, since the middle tool 22 and the fixed shaft member 23a are respectively attached to the outer cylinder 21 in a non-rotatable manner relative to each other, the outer cylinder 21, the middle tool 22, and the fixed shaft member 23a rotate integrally. On the other hand, since the sleeve 11 and the outer movable cylinder 51, and the outer movable cylinder 51 and the middle plate body 52 are respectively attached to each other in a non-rotatable manner relative to each other, the sleeve 11 and the middle plate 12 rotate integrally.

[0041] When the operation part 10 and the sleeve 11 are relatively rotated, at least one of the operations of the inner transmission shaft 26 and the outer transmission shaft 23b rotating integrally with respect to the inner movable cylinder 56 or the inner transmission shaft 26 rotating with respect to the outer transmission shaft 23b occurs.

[0042] When the inner transmission shaft 26 and the outer transmission shaft 23b rotate integrally with respect to the inner movable cylinder 56, the second engaging projection 56c engages with the outer spiral groove 32, and moves spirally in the outer spiral groove 32, so that the inner movable cylinder 56 (the middle plate 12) rises with respect to the feeding member 23. In this way, the operation in which the middle plate body 52 rises due to the relative rotation of the feeding member 23 and the inner movable cylinder 56 in the feeding direction is referred to as the "first operation" in this specification.

[0043] When the inner transmission shaft 26 rotates with respect to the outer transmission shaft 23b, the first engaging projection 31 engages with the inner spiral groove 26a, and moves spirally in the inner spiral groove 26a, so that the outer transmission shaft 23b rises with respect to the inner transmission shaft 26. At this time, the second engaging projection 56c is pushed up through the inner surface of the outer spiral groove 32, so that the middle plate body 52 rises together with the outer transmission shaft 23b. In this way, the operation in which the middle plate body 52 rises together 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 feeding direction is referred to as the "second operation" in this specification.

[0044] That is, as shown in FIGS. 1 and 2, when the operation unit 10 and the sleeve 11 are relatively rotated in the feeding direction, the middle plate 12 rises by at least one of the first operation and the second operation. As a result, the contents are fed upward from the sleeve 11. Which of the first operation and the second operation occurs varies depending on the frictional resistance between the members and the like. However, no matter which operation is preferentially performed, since the contents are fed out, the user can use the contents. In addition, both the first operation and the second operation may occur simultaneously.

[0045] In the initial stage where the middle plate body 52 rises due to the first operation or the second operation, the middle plate body 52 rises with respect to the outer movable cylinder 51 (the first rising process). Specifically, in the first rising process, the ridge portion 56a is guided by the second regulating groove 51c, so that the rotation of the middle plate body 52 with respect to the outer movable cylinder 51 is regulated, and then the middle plate body 52 rises with respect to the outer movable cylinder 51. In the first rising process, the inner stopper protrusion 56b abuts against the outer stopper protrusion 51b from below. Thereby, the rising of the middle plate body 52 with respect to the outer movable cylinder 51 is regulated.

[0046] After the first rising process, when the middle plate body 52 further tries to rise due to the first operation or the second operation, the outer movable cylinder 51 is pushed upward via the stopper protrusions 51b and 56b. Thereby, the middle plate body 52 rises with respect to the sleeve 11 together with the outer movable cylinder 51 (the second rising process). In the second rising process, since the upward protrusion 43 is accommodated in the first regulating groove 51a, the rotation of the outer movable cylinder 51 with respect to the sleeve 11 is regulated, and then the outer movable cylinder 51 rises with respect to the sleeve 11. In the second rising process, the lower end surface of the first regulating groove 51a abuts against the upward protrusion 43 from below, so that the rising of the outer movable cylinder 51 with respect to the sleeve 11 is regulated. Thereby, the middle plate 12 reaches the uppermost position. In the present embodiment, the configuration in which the second rising process occurs after the first rising process has been described. However, the first rising process may occur after the second rising process, or the first rising process and the second rising process may occur simultaneously.

[0047] When the middle plate 12 is lowered, the exterior body 20 and the sleeve 11 are relatively rotated in the accommodating direction. Then, depending on whether the inner transmission shaft 26 and the outer transmission shaft 23b rotate integrally with respect to the inner movable cylinder 56 or the inner transmission shaft 26 rotates with respect to the outer transmission shaft 23b, the middle plate body 52 descends with respect to the sleeve 11. As the middle plate body 52 descends, the outer movable cylinder 51 descends together with the middle plate body 52 due to its own weight. Then, when the lower end edge of the outer movable cylinder 51 abuts against the pedestal portion 25, the descent of the outer movable cylinder 51 with respect to the sleeve 11 is regulated. Thereafter, as the middle plate body 52 further descends, the middle plate body 52 descends with respect to the sleeve 11 and the outer movable cylinder 51.

[0048] Here, as shown in FIG. 7, the sleeve 11 of the present embodiment is integrally formed by injection molding using a mold 100. The mold 100 includes an upper mold 101 and a lower mold 102 that are relatively movable in the vertical direction. The upper mold 101 molds at least a portion of the outer peripheral surface of the sleeve 11 that is located above the upper end opening edge of the exterior body 20. In the present embodiment, the lower end surface of the upper mold 101 is located below the upper end opening edge of the exterior body 20 and above the upper protrusion 43. However, the lower end surface of the upper mold 101 may be located below the upper protrusion 43.

[0049] The lower mold 102 molds at least a portion of the outer peripheral surface of the sleeve 11 that is located below the upper end opening edge of the exterior body 20. In the present embodiment, the upper end surface of the lower mold 102 is located below the upper end opening edge of the exterior body 20 and above the upper protrusion 43. Therefore, when the sleeve 11 is molded by the mold 100, a parting line L (FIG. 3) is formed by the mating surface of the mold 100 at a portion of the outer peripheral surface of the sleeve 11 (cylindrical portion 41) that is located below the upper end opening edge of the exterior body 20 and above the upper protrusion 43. The parting line L extends linearly in the circumferential direction over the entire circumference of the outer peripheral surface of the cylindrical portion 41. Note that the parting line L only needs to be located below the upper end opening edge of the exterior body 20.

[0050] In the lower mold 102, a gate 105 is opened at a position overlapping the upward protrusion 43 when viewed in the radial direction. That is, a pair of gates 105 are formed at positions facing each other in the radial direction. In the present embodiment, the gate 105 is provided at a position overlapping the upper surface portion 43ab among the upward protrusions 43. Therefore, when the sleeve 11 is molded by the mold 100, a gate mark G caused by the gate residue is formed at a position on the outer peripheral surface of the sleeve 11 that overlaps the upward protrusion 43 when viewed in the radial direction. That is, the gate mark G will be located below both the upper end opening edge of the exterior body 21 and the parting line L. Note that the gate 105 may be formed in the upper mold 101 (above the parting line L) as long as it is a portion located below the upper end opening edge of the exterior body 20.

[0051] The lower mold 102 is formed with a molding protrusion 103 for molding the recess 44. The molding protrusion 103 protrudes radially inward from the inner peripheral surface of the lower mold 102. Note that the lower mold 102 may be composed of a first lower mold and a second lower mold that are relatively movable in the radial direction.

[0052] In the feeding container 1 of the present embodiment, the sleeve 11 has a configuration including a cylindrical portion 41 that surrounds the outside of the transmission shafts 26 and 23b inside the exterior body 20 with a part protruding upward with respect to the exterior body 20, and a parting line L formed on the mating surface of the mold 100 at a portion of the cylindrical portion 41 that is located below the upper end opening edge of the exterior body 20. According to this configuration, by forming the parting line L at a portion of the cylindrical portion 41 that is located below the upper end opening edge of the exterior body 20, the entire portion of the outer peripheral surface of the sleeve 11 that is located above the upper end opening edge of the exterior body 20 can be formed into a smooth surface without unevenness. Thereby, the aesthetic appearance of the feeding container 1 can be improved.

[0053] In particular, in the feeding container 1 of the present embodiment, the sleeve 11 includes an upper protrusion (first protrusion) 43 that restricts the rotation of the sleeve 11 protruding radially inward from a portion located below the upper end opening edge of the exterior body 20, and a gate mark G provided at a position overlapping the upper protrusion 43 when viewed radially on the outer peripheral surface of the cylindrical portion 41. According to this configuration, the gate 105 is set at a position overlapping the portion (maximum wall thickness portion) of the sleeve 11 where the upper protrusion 43 is formed when viewed radially. Thereby, the molten resin filled into the mold 100 through the gate 105 can flow smoothly within the mold 100. Therefore, it is easy for the molten resin to reach the entire interior of the mold 100 in the vertical direction within the cylindrical portion 41.

[0054] In the feeding container 1 of the present embodiment, the upper protrusion 43 is configured to be located below the center in the vertical direction within the cylindrical portion 41. According to this configuration, since the molten resin filled into the mold 100 through the gate 105 can flow smoothly within the mold 100, even if the gate 105 is set at a portion located below the center in the vertical direction, it is easy for the molten resin to reach the entire interior of the mold 100 in the vertical direction.

[0055] In the feeding container 1 of the present embodiment, the upper protrusion 43 is configured such that the amount of protrusion from the cylindrical portion 41 in the radial direction gradually decreases upward. According to this configuration, since the amount of protrusion of the upper protrusion 43 from the cylindrical portion 41 in the radial direction gradually decreases upward, the molten resin flowing into the mold 100 through the gate 105 is easily guided upward with respect to the upper protrusion 43 (see the arrow in FIG. 7). As a result, the moldability of the sleeve 11 can be improved without increasing the wall thickness of the entire cylindrical portion 41.

[0056] In the feeding container 1 of the present embodiment, a recess 44 that opens on the outer peripheral surface of the cylindrical portion 41 is formed in a portion of the cylindrical portion 41 located below the upper protrusion 43. According to this configuration, while the portion (molding protrusion 103) of the molding die 100 (lower die 102) that molds the concave portion 44 is engaged with the concave portion 44, the sleeve 11 is molded. As a result, when the molding die 100 is demolded (when the upper die 101 is demolded from the lower die 102), it becomes easier to separate the upper die 101 from the lower die 102 while the molded product of the sleeve 11 is securely held by the lower die 102. In this case, it is not necessary to provide a draft taper for improving demoldability, or the draft taper can be made smaller. Thereby, the degree of freedom in the design of the sleeve 11 can be improved.

[0057] In the feeding container 1 of the present embodiment, in the tubular portion 41, at the portion that overlaps the concave portion 44 when viewed from the radial direction, a lower protrusion 42 that protrudes inward in the radial direction is formed. The exterior body 20 protrudes upward from the bottom wall 21a of the exterior cylinder 21 and includes a fitted portion (insertion portion) 24 inserted into the tubular portion 41. In the fitted portion 24, a circumferential groove 24b that opens outward in the radial direction and extends over the entire circumference in the circumferential direction is formed. The lower protrusion 42 is configured to be movably accommodated in the circumferential groove 24b in the circumferential direction within the circumferential groove 24b. According to this configuration, since the lower protrusion 42 is movably accommodated in the circumferential groove 24b in the circumferential direction, after restricting the vertical movement of the sleeve 11 with respect to the exterior body 20, the circumferential movement of the sleeve 11 with respect to the exterior body 20 can be stabilized. Moreover, since the lower protrusion 42 is formed at a position that overlaps the concave portion 44 when viewed from the radial direction in the tubular portion 41, it is possible to suppress a decrease in the wall thickness of the sleeve 11 due to the formation of the concave portion 44. Thereby, the moldability of the sleeve 11 can be improved.

[0058] As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the appended claims. In the above-described embodiment, the configuration in which the feeding member 23 includes the inner transmission shaft 26 and the outer transmission shaft 23b has been described, but the present invention is not limited to this configuration. The feeding member 23 only needs to have at least the inner transmission shaft 26. In the above-described embodiment, the configuration in which the exterior body 20 includes the exterior cylinder 21 and the interior member 22 has been described, but the present invention is not limited to this configuration. The exterior body 20 may include only the exterior cylinder 21.

[0059] In the above-described embodiment, the configuration in which the spiral groove is formed on the outer peripheral surface of the transmission shaft and the movable shaft surrounds the outside of the transmission shaft has been described, but the present invention is not limited to this configuration. For example, a configuration in which the spiral groove is formed on the inner peripheral surface of the cylindrical transmission shaft and the movable shaft having the engaging protrusion is disposed inside the transmission shaft may also be used. In the above-described embodiment, the configuration in which the middle plate 12 is formed in a bottomed cylindrical shape has been described, but the middle plate 12 may have a configuration without a bottom wall portion as long as it can accommodate the lower end portion of the rod-shaped content.

[0060] In the above-described embodiment, the configuration in which the recess 44 and the lower protrusion 42 are formed at positions overlapping in the radial direction has been described, but the present invention is not limited to this configuration. The recess 44 and the lower protrusion 42 are not essential components, and a configuration including either the recess 44 or the lower protrusion 42 may also be used. In the above-described embodiment, the configuration in which the protruding amount of the upper protrusion 43 from the cylindrical portion 41 gradually decreases as it goes upward has been described, but the present invention is not limited to this configuration. The surface shape of the upper protrusion 43 can be changed as appropriate.

[0061] In the above-described embodiment, the upper protrusion 43 is configured to be located below the center in the vertical direction of the cylindrical portion 41, but the present invention is not limited to this configuration. The upper protrusion 43 may be located at the same height as the center in the vertical direction of the cylindrical portion 41 or above the center.

[0062] In addition, within the scope not departing from the gist of the present invention, it is possible to appropriately replace the components in the above-described embodiments with well-known components, and the above-described modified examples may also be appropriately combined.

Explanation of Symbols

[0063] 1: Pay-out container 11: Sleeve 12: Middle dish 20: Outer package 21a: Bottom wall 23b: Outer transmission shaft (transmission shaft) 24b: Circumferential groove 26: Inner transmission shaft (transmission shaft) 41: Cylindrical part 42: Lower protrusion (second protrusion) 43: Upper protrusion (first protrusion) 44: Concave part 100: Molding die 105: Gate G: Gate mark L: Parting line O: Container axis

Claims

1. A bottomed cylindrical exterior body, a transmission shaft having a spiral groove extending around the container axis and extending upward from the bottom wall of the exterior body, a sleeve rotatably provided with respect to the transmission shaft in the circumferential direction around the container axis and integrally formed of a resin material, and a middle plate provided inside the sleeve and vertically movable with respect to the sleeve as the sleeve rotates with respect to the transmission shaft. The sleeve has a cylindrical portion inserted inside the exterior body so as to surround the outside of the transmission shaft in a state where a part thereof protrudes upward with respect to the exterior body, a parting line formed by a mating surface of a mold in a portion of the cylindrical portion located below the upper end opening edge of the exterior body, a first protrusion that protrudes radially inward intersecting the container axis from a portion of the cylindrical portion located below the upper end opening edge of the exterior body and engages with the middle plate in the circumferential direction to restrict rotation of the sleeve with respect to the middle plate, and a gate mark provided at a position overlapping the first protrusion when viewed from the radial direction on the outer peripheral surface of the cylindrical portion. A feeding container having these features.

2. The feeding container according to claim 1, wherein the protruding amount of the first protrusion from the cylindrical portion in the radial direction gradually decreases upward.

3. The feeding container according to claim 1 or claim 2, wherein a recess opening on the outer peripheral surface of the cylindrical portion is formed in a portion of the cylindrical portion located below the first protrusion.

4. In a portion of the cylindrical portion that overlaps the recess when viewed from the radial direction, a second protrusion protruding radially inward is formed. The exterior body includes an insertion portion that protrudes upward from the bottom wall of the exterior body and is inserted into the cylindrical portion. A circumferential groove that opens radially outward and extends over the entire circumference in the circumferential direction is formed in the insertion portion. The feeding container according to claim 3, wherein the second protrusion is accommodated in the circumferential groove and is movable in the circumferential direction within the circumferential groove.

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