Synthetic resin cap

Abstract

To provide a synthetic resin cap which can suppress or dissolve clogging at an opening without depending on the processing state of powder.SOLUTION: A synthetic resin cap of the present invention comprises: an inner lid including an inner circumferential wall in which an engagement part engaged with a container mouth part from which powder is taken out is formed at an inner circumferential face and an inner lid plate provided with a mesh opening part facing at least a part of a spout in the container mouth part; an outer lid including an outer circumferential wall covering an outer face of the inner circumferential wall and an outer lid plate at least having a first opening part provided with powder leveling ribs continuously to the outer circumferential wall and capable of facing the spout via the mesh opening part; and a propeller member combined with the outer lid so as to sandwich the inner lid plate, integral with the outer lid, and rotatable around an axis relative to the inner lid. When the outer lid is rotated, synchronously with the rotation of the powder leveling ribs at the upper face side of the mesh opening part, the propeller member is rotated around the axis at the lower face side of the mesh opening part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technology for sealing the mouth of a container, and more particularly to a synthetic resin cap formed from a synthetic resin. [Background technology]

[0002] For example, a synthetic resin cap formed into a desired shape by injection molding a known resin material is used as a cap for sealing the opening of a container (hereinafter also referred to as "container opening") that stores powder contents such as pepper or flour. The powder contents can be taken out through the synthetic resin cap attached to the container opening.

[0003] Here, caps that allow the amount of content to be dispensed to be adjusted by a simple operation are known, as exemplified in Patent Document 1. Specifically, the cap disclosed in Patent Document 1 proposes a lid body formed with three types of assemblies A to C (normal outlet A, small amount outlet B, large amount outlet C) that group openings by size. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-111227 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technologies including those described in the above patent documents still cannot be said to meet market needs, and at least the following problems exist: Although the cap in patent document 1 makes it possible to change the amount of content dispensed, the powder is discharged from the opening in the container due to the effect of its own weight when shaken, and if the opening becomes clogged with powder, the amount dispensed is significantly reduced.

[0006] To address this issue, it is possible to process the powder so that it is less likely to clog, but processing the powder alone does not necessarily eliminate clogging, and the processing itself also results in unnecessary increased costs.

[0007] As such, Patent Document 1 does not acknowledge at all the problem of powder clogging the openings at the mouth of the container, and it can be said that there is a lot of room for improvement. One of the objects of the present invention is to provide a synthetic resin cap having multiple openings through which powder stored in a container can be removed, which can suppress or eliminate clogging of the openings regardless of the processing state of the powder. [Means for solving the problem]

[0008] In order to solve the above problem, one embodiment of the synthetic resin cap of the present invention comprises: (1) an inner lid having an inner wall on the inner surface of which an engaging portion that engages with the container mouth from which the powder is taken out is formed, and an inner lid plate having a mesh opening that faces at least a portion of the pouring outlet at the container mouth; an outer lid having an outer wall that covers the outer surface of the inner wall, and an outer lid plate that is connected to the outer wall and has a powder scraping rib and has at least a first opening that can face the pouring outlet through the mesh opening; and a propeller member that is combined with the outer lid so as to sandwich the inner lid plate, and is integral with the outer lid and can rotate around an axis relative to the inner lid; and when the outer lid is rotated, the propeller member rotates around the axis on the underside of the mesh opening in synchronization with the rotation of the powder scraping rib on the upper side of the mesh opening.

[0009] Furthermore, in the synthetic resin cap described in (1) above, (2) it is preferable that the outer cover plate has a centrally located fitting portion, the powder scraping rib extends radially from the fitting portion, the propeller member has a centrally located fitting portion that can fit with the fitting portion, and a blade extending radially from the fitting portion, and that a central through hole is formed in the inner cover plate, and the fitting portion and the fitting portion are fitted together so as to sandwich the inner cover plate through the central through hole.

[0010] In addition, in the synthetic resin cap described in (2) above, (3) it is preferable that the powder scraping rib and the blade are provided at positions that overlap each other in the circumferential direction when viewed from above.

[0011] Furthermore, in the synthetic resin cap described in any of (1) to (3) above, (4) it is preferable that the inner cover plate has a non-mesh opening arranged adjacent to the mesh opening in the circumferential direction, and the outer cover plate has a second opening that can face the spout via the non-mesh opening, arranged adjacent to the first opening in the circumferential direction.

[0012] Furthermore, in the synthetic resin cap described in (4) above, it is preferable that (5) it further comprises a rotation restriction mechanism provided between the outer surface of the inner peripheral wall and the inner surface of the outer peripheral wall, capable of restricting the rotation of the outer lid relative to the inner lid.

[0013] Furthermore, in the synthetic resin cap described in (4) above, (6) it is preferable that the propeller member comprises a mating portion that is positioned in the center and can be mated with the mating portion, and a blade extending radially from the mating portion, and that the blade comprises a first pressing blade that extends radially from the mating portion and presses the powder in the container against the mesh opening when the outer lid rotates clockwise, and a second pressing blade that extends radially from the mating portion and presses the powder against the mesh opening when the outer lid rotates counterclockwise.

[0014] Furthermore, in the synthetic resin cap described in (4) above, (7) it is preferable that the powder scraping rib is provided on each of both circumferential ends of the first opening and includes a first rib that widens radially from the inside to the outside. [Effects of the Invention]

[0015] According to the present invention, in a cap having a plurality of openings through which powder stored in a container can be taken out, clogging of the openings at the opening of the container can be suppressed or eliminated regardless of the processing state of the powder. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a perspective view of a synthetic resin cap according to an embodiment. [Figure 2] 1 is a perspective view showing the synthetic resin cap according to the embodiment with the opening and closing lid of the outer lid open. FIG. [Figure 3] 1 is a perspective view showing an inner lid of a synthetic resin cap according to an embodiment, viewed obliquely from above. FIG. [Figure 4] FIG. 2 is a top view of the inner lid according to the embodiment. [Figure 5] FIG. 2 is a side view of the inner lid according to the embodiment. [Figure 6] 5 is a cross-sectional view of the inner lid shown in FIG. 4 along the line AA. [Figure 7] 1 is a perspective view showing an outer lid of a synthetic resin cap according to an embodiment, viewed obliquely from above. FIG. [Figure 8] FIG. 2 is a top view of the outer lid (with the opening / closing lid open) according to the embodiment. [Figure 9] FIG. 2 is a side view of the outer lid (opening / closing lid) according to the embodiment. [Figure 10] 9 is a cross-sectional view of the outer cover shown in FIG. 8 BB. [Figure 11] 10 is a side view of the outer cover in FIG. 9, partially seen from the arrow P and the arrow Q. FIG. [Figure 12] 10 is a cross-sectional view of the outer cover shown in FIG. 9 along CC. [Figure 13]FIG. 2 is a perspective view showing a propeller member of the synthetic resin cap according to the embodiment, viewed obliquely from above. [Figure 14] 3A and 3B are a top view and a side view of a propeller member according to the embodiment. [Figure 15] FIG. 2 is a bottom view of the propeller member according to the embodiment. [Figure 16] FIG. 15 is a DD cross-sectional view of the propeller member in FIG. [Figure 17] FIG. 2 is a schematic side view comparing blade angles of propeller members according to an embodiment. [Figure 18] FIG. 4 is a schematic diagram comparing the mounting angles of the propeller members according to the embodiment. [Figure 19] 5A to 5C are schematic diagrams illustrating state transitions in the rotation restriction mechanism of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment for suitably implementing the present invention will be described. For the sake of convenience, the X, Y, and Z directions are defined as appropriate in the following description, but it goes without saying that this does not restrict the scope of the present invention. Regarding matters other than the features of the present invention detailed below, for example, the configuration of the spout disclosed in the above-mentioned patent documents or the structure of other known synthetic resin caps or container openings may be appropriately referenced.

[0018] [Synthetic resin cap] First, a synthetic resin cap 100 of this embodiment will be described with reference to Figures 1 and 2. The synthetic resin cap 100 of this embodiment is configured to have the function of engaging with a container opening of a container that contains powder contents (hereinafter also simply referred to as "powder") and sealing the container opening.

[0019] Here, examples of a "container" suitable for this embodiment include known containers such as bottles made of synthetic resin such as PET, glass, or metal and equipped with a spout (container mouth) through which the contents can be taken out. Also, examples of a "powder" suitable for this embodiment include various known powdered or granular substances that can be stored in the above-mentioned containers, such as powdered foods such as flour, powdered seasonings such as sugar, or granular medicines.

[0020] 1 and other figures, the synthetic resin cap 100 of this embodiment is configured to include an inner lid 10, an outer lid 20, and a propeller member 40. As shown in the figure, the synthetic resin cap 100 of this embodiment preferably includes an opening (mesh opening) having a plurality of openings through which a relatively small amount of powder can be taken out, and an opening (non-mesh opening) having, for example, a single large opening through which a relatively large amount of powder can be taken out. The synthetic resin cap 100 of this embodiment may not have the non-mesh opening described above and may have only a mesh opening. In other words, the inner lid 10 described later may have the mesh opening on its entire surface.

[0021] The synthetic resin cap 100 may be formed by injection molding a known synthetic resin material such as low-density PE (polyethylene), high-density PE, PP (polypropylene), or a mixed resin of PE and PP. The inner lid 10, outer lid 20, and propeller member 40 constituting the synthetic resin cap 100 may be formed of the same type of resin material, or at least a portion of each may be formed of a different material from the others; for example, the inner lid 10 and outer lid 20 may be formed of synthetic resin while the propeller member 40 is formed of a material (such as a metal material or a hard resin material) that is harder than the inner lid, etc.

[0022] <Inner lid 10> 3 to 6, the inner lid 10 constituting the synthetic resin cap 100 of this embodiment will be described in detail. As can be seen from these figures, the inner lid 10 of this embodiment has the function of engaging with the container (container mouth portion) described above and the function of supporting the outer lid 20 and the propeller member 40. The inner lid 10 of this embodiment is configured to include an inner peripheral wall 11 and an inner lid plate 12.

[0023] The inner peripheral wall 11 has an engagement portion 11a formed on its inner peripheral surface to engage with the container opening through which the powder stored in the container is dispensed. The engagement portion 11a may be, for example, a known screw. As shown in the figure, the outer peripheral surface of the inner peripheral wall 11 is provided with a rotation restriction rib 31 that constitutes part of a rotation restriction mechanism 30, which will be described later. Note that the inner lid 10 of this embodiment is configured to be able to be screwed onto the container opening via the engagement portion 11a, but the engagement form between the inner lid 10 and the container opening is not limited to the above, and may be, for example, a form in which the inner lid is capped (fitted) onto the container opening and fixed with a rib, etc. In other words, the "engagement between the inner lid and the container opening" of this embodiment includes known attachment forms in which a cap is fixed to a container opening, such as the above-mentioned screwing or fitting.

[0024] 3 and 4, the inner cover plate 12 is provided with a mesh opening 12A that faces at least a part of the pouring outlet at the container mouth. The inner cover plate 12 of this embodiment is also provided with a non-mesh opening 12B that faces another part of the pouring outlet at the container mouth. The mesh opening 12A is an opening having a plurality of through holes (openings) formed in a mesh pattern in the inner cover plate 12. The shape of the openings constituting the mesh opening 12A may be a circular hole having a circular cross section, or may be a rectangular hole having a cross section such as a square or hexagon.

[0025] Furthermore, the individual openings constituting the mesh opening 12A may be configured so that their hole diameters change along the axial direction (Z direction in the drawing) (for example, the diameter of the outer lid side surface located on the outside of the container is equal to or greater than the diameter of the propeller side surface located on the inside of the container). In this way, if the diameter of the individual openings on the outer lid side is equal to or greater than the diameter on the propeller side, clogging of the powder when the powder is removed from the container can be suppressed. Furthermore, the edges of the individual openings constituting the mesh opening 12A may be chamfered or rounded.

[0026] As can be seen from these figures, the area occupied by the non-mesh openings 12B in the inner cover plate 12 may be smaller than the area occupied by the mesh openings 12A. As an example, the ratio of the mesh openings 12A to the non-mesh openings 12B in the inner cover plate 12 may be about 6:4. In this way, as shown in FIG. 4 and other figures, the inner cover plate 12 may have non-mesh openings 12B, whose overall opening size is smaller than that of the mesh openings 12A, arranged next to the mesh openings 12A in the circumferential direction. The ratio of the mesh openings 12A to the non-mesh openings 12B is not limited to the above ratio and may be set to any ratio, such as 5:5.

[0027] A central through-hole 12C is formed in the center of the inner lid plate 12 so as to pass through the central axis of the container. The diameter of the central through-hole 12C is set to allow the fitting portion FP of the outer lid 20 and the fitted portion 41 of the propeller member 40, which will be described later, to be inserted therethrough. The fitting portion FP and the fitted portion 41 are fitted together via the central through-hole 12C so as to sandwich the inner lid plate 12. Therefore, when the inner lid 10 is engaged with the container opening, the fitting portion FP and the fitted portion 41 are fitted together via the central through-hole 12C, and the outer lid 20 and the propeller member 40 are supported by the inner lid plate 12.

[0028] <Outer lid 20> 7 to 11, the outer lid 20 constituting the synthetic resin cap 100 of this embodiment will be described in detail. As can be seen from these figures, the outer lid 20 of this embodiment has the function of covering the inner lid 10 and sealing the pouring outlet of the container mouth, and is composed of an outer peripheral wall 21, an outer lid plate 22, a powder scraping rib 23, a central separator 24, an opening 25, an opening / closing lid 26, a central hub 27, a hook portion 28, and the like.

[0029] The outer peripheral wall 21 is configured to cover the outer surface of the inner peripheral wall 11. The outer peripheral wall 21 is able to rotate around its axis (in the θz direction in FIG. 1 ) relative to the inner peripheral wall 11, under the restriction of a rotation restriction mechanism 30 described below. The outer shape of the outer peripheral wall 21 may be a rectangular tube with a polygonal cross section, or a cylindrical shape with a circular cross section that is appropriately treated with an anti-slip coating.

[0030] The outer cover plate 22 includes a central divider 24, an opening 25, an opening / closing cover 26, a central hub 27, a fitting portion FP, and a hook portion 28. The outer cover plate 22 is connected to the upper portion (e.g., the upper end) of the outer peripheral wall 21 described above. The central divider 24 is a strip-shaped area that separates the first opening 25A and the second opening 25B through the center of the outer cover plate 22. As will be described later, openable covers 26 are provided on both sides of the central divider 24.

[0031] Opening 25 is provided in outer lid plate 22 and faces the pouring outlet at the container mouth, communicating with it. In this embodiment, opening 25 includes a first opening 25A that can face the pouring outlet at the container mouth via mesh opening 12A in inner lid plate 12, and a second opening 25B that can face the pouring outlet via non-mesh opening 12B in inner lid plate 12. Powder stored in the container can be taken out through opening 25, for example, with the container mouth facing downward.

[0032] As described above, in this embodiment, the area occupied by the non-mesh opening 12B is smaller than the area occupied by the mesh opening 12A, and therefore the ratio of the first opening 25A to the second opening 25B in the outer cover plate 22 is also configured in accordance with the above-mentioned area occupied. That is, as shown in Figure 8, in this embodiment, the area occupied by the second opening 25B is set smaller than the area occupied by the first opening 25A. In this way, in the outer cover plate 22, the second opening 25B, which can face the pouring outlet of the container mouth via the non-mesh opening 12B, is arranged alongside the first opening 25A in the circumferential direction.

[0033] 7 and 8, the first opening 25A of the outer cover plate 22 is provided with a powder-scraping rib 23 that can scrape off the powder when the powder is removed. The powder-scraping rib 23 has the function of scraping off at least a portion of the powder remaining in the openings of the mesh opening 12A, and the function of scraping out the powder remaining in the openings of the mesh opening 12A. As can be seen from FIGS. 7 and 12, the powder-scraping rib 23 in this embodiment extends radially from the central hub 27 that includes the fitting portion FP. More specifically, the powder leveling rib 23 of this embodiment includes at least first ribs 23A that are provided on both circumferential ends of the first opening 25A and that widen radially from the inside to the outside.

[0034] As shown in the figure, a specific example of the flared first rib 23A may be a Y-shaped rib whose bottom is connected to a central hub 27, which will be described later. By providing the flared first rib 23A inside the first opening 25A in this way, it is possible to scrape off, scrape out, or clean powder from almost the entire surface of the mesh opening 12A, thereby eliminating clogging with powder.

[0035] Note that specific examples of the flared first rib 23A are not particularly limited as long as they flare from the inside to the outside in the radial direction, and in addition to the Y-shaped rib described above, they may also be V-shaped ribs or trapezoidal ribs. Furthermore, with regard to the circumferential width of the flared first rib 23A, for example, the cross-sectional area may be structured so that it gradually increases from the mesh side to the opening / closing cover side along the axial direction (Z direction), or the cross-sectional area may be constant along the axial direction.

[0036] The powder leveling rib 23 of this embodiment may further include a non-divergent second rib 23B arranged between the multiple first ribs 23A so as to be positioned toward the center of the first opening 25A in the circumferential direction. As shown in the figure, a specific example of the non-divergent second rib 23B may be an I-shaped rib connected to the central hub 27 and extending in the radial direction. The non-divergent second rib 23B of this embodiment may be arranged between two divergent first ribs 23A in the circumferential direction, as shown in FIG. 7 and other figures.

[0037] The opening / closing lid 26 is configured to be openable and closable around the end of the central divider 24, and has the function of closing or opening the pouring outlet of the container mouth. As shown in Figure 7 etc., the opening / closing lid 26 of this embodiment is configured to include a first opening opening opening lid 26A that can close or open the first opening 25A described above, and a second opening opening opening lid 26B that can close or open the second opening 25B described above.

[0038] 7 and 11, a rib rb having a contour corresponding to the outer shape of the powder leveling rib 23 and the periphery of the first opening 25A and engaging with the first opening 25A is provided on the surface of the opening / closing lid 26A for the first opening that faces the first opening 25A. Also, a rib rb having a contour corresponding to the periphery of the second opening 25B and engaging with the second opening 25B is provided on the surface of the opening / closing lid 26B for the second opening that faces the second opening 25B.

[0039] The central hub 27 is located in the center of the central divider 24, near the center of the container opening. In other words, the central portion of the central divider 24 bulges radially to form the central hub 27, which is island-shaped (circular). As shown in Figures 7, 10, and 12, the underside (inside the container) of this central hub 27 is provided with a fitting portion FP that hangs down along the axial direction (Z direction). In this way, the outer cover plate 22 of this embodiment is provided with a fitting portion FP located in the center.

[0040] The fitting portion FP is a hollow rectangular tube, and a fitted portion 41 of the propeller member 40 (described later) can be fitted inside the rectangular tube via an undercut UC. As can be understood by referring to both Figures 12 and 13, the fitting portion FP has an insertion opening that is hexagonal in plan view to correspond to the outer shape of the fitted portion 41, which is a hexagonal column with a relatively uniform wall thickness in the circumferential direction. By fitting into the fitted portion 41 of the propeller member 40 (described later) without slipping around the axis, rotational force can be efficiently transmitted to the propeller member 40 via the outer lid 20. As a result, when the outer lid 20 rotates around the axis, the propeller member 40 integrated with the outer lid 20 can also rotate synchronously around the axis.

[0041] 12, the fitting portion FP in this embodiment is a hollow rectangular tube with a hexagonal cross section, but is not limited to this shape and may be a hollow rectangular tube with a shape other than hexagonal. The fitted portion 41 may have an insertion opening that corresponds to the outer shape of the fitting portion FP. Furthermore, considering assembly and disassembly, the fitting portion FP is preferably a hollow rectangular tube, but it may also be in a form that increases frictional resistance by, for example, roughening the outer surface of the hollow cylinder.

[0042] <Rotation restriction mechanism 30> Next, the rotation restriction mechanism 30 constituting the synthetic resin cap 100 will be described with reference to Figures 3, 10, 12, and 13. The rotation restriction mechanism 30 is provided between the outer surface of the inner peripheral wall 11 and the inner surface of the outer peripheral wall 21 and has the function of restricting rotation of the outer lid 20 relative to the inner lid 10. The rotation restriction mechanism 30 also has the function of preventing the non-mesh opening 12B from overlapping with the first opening 25A, which would result in excessive powder being dispensed. Furthermore, since the outer lid 20 of this embodiment is rotatable about its axis integrally with the propeller member 40, the rotation restriction mechanism 30 has the function of restricting rotation of the propeller member 40 relative to the inner lid 10 via the outer lid 20 so that the propeller member 40 does not overlap with the non-mesh opening 12B.

[0043] The rotation restricting mechanism 30 of this embodiment includes a rotation restricting rib 31 provided on one of the outer surface of the inner circumferential wall 11 and the inner surface of the outer circumferential wall 21, and a rotation restricting groove 32 provided on the other of the outer surface of the inner circumferential wall 11 and the inner surface of the outer circumferential wall 21, capable of accommodating the rotation restricting rib 31. More specifically, in this embodiment, as can be seen from the above drawings, the rotation restricting rib 31 is provided on the outer surface of the inner circumferential wall 11, and the rotation restricting groove 32 is provided on the inner surface of the outer circumferential wall 21.

[0044] 12, rotation restricting groove 32 of this embodiment has groove end ED consisting of one end ED1 and the other end ED2 corresponding to the boundary (center divider 24) between mesh opening 12A and non-mesh opening 12B so that first opening 25A does not overlap non-mesh opening 12B. This allows rotation restricting mechanism 30 to restrict rotation of the outer cover so that first opening 25A does not overlap non-mesh opening 12B.

[0045] Furthermore, the rotation restriction mechanism 30 may include a plurality of engaging pairs each consisting of a pair of rotation restriction ribs 31 and a pair of rotation restriction grooves 32, arranged in the circumferential direction. Referring to FIGS. 4 and 12, the engaging pairs of this embodiment include a first engaging pair consisting of a first rotation restriction rib 31 and a first rotation restriction groove 32, which are provided corresponding to the mesh opening 12A, and a second engaging pair consisting of a second rotation restriction rib 31 and a second rotation restriction groove 32, which are provided corresponding to the non-mesh opening 12B. Preferably, the first engaging pair and the second engaging pair are arranged symmetrically (180° rotationally symmetrical) about the center (central hub 27). By providing a plurality of engaging pairs each consisting of a pair of rotation restriction ribs 31 and a pair of rotation restriction grooves 32 in the circumferential direction, the rotation restriction function can be maintained even if, for example, one engaging pair deteriorates or deforms.

[0046] <Propeller member 40> Next, the propeller member 40 constituting the synthetic resin cap 100 of this embodiment will be described with reference to FIGS. The propeller member 40 is configured to have the function of rotating integrally with the outer lid 20 about an axis (θz direction, see FIG. 1 as appropriate) relative to the inner lid 10. The propeller member 40 of this embodiment is combined and integrated with the outer lid 20 (specifically, the fitting portion FP) via the fitting portion 41 so as to sandwich the inner lid plate 12.

[0047] Therefore, for example, when the outer lid 20 is rotated by a user, the powder scraping rib 23 rotates around its axis on the upper side (outer lid plate side) of the mesh opening 12A, and in synchronization with this, the propeller member 40 rotates around its axis on the lower side (inside the container) of the mesh opening 12A. More specifically, the propeller member 40 of this embodiment, as shown in the figure, comprises a mating portion 41 that is positioned in the center and can be mated with the mating portion FP of the outer cover 20, and blades (a group of blades consisting of a first pressing blade 42 to a third pressing blade 44) extending radially from this mating portion 41.

[0048] 16 and other figures, the fitted portion 41 includes an insertion opening into which the fitting portion FP of the outer lid 20 is inserted, and a fitting protrusion Pt disposed in the center of the insertion opening and insertable into the fitting portion FP. The shape of the insertion opening in the fitted portion 41 corresponds to the outer shape of the fitting portion FP described above. As described above, the fitting portion FP in this embodiment is a hollow rectangular tube with a hexagonal cross section, and therefore the opening of the fitted portion 41 also has a hexagonal cross section.

[0049] 14 to 18, the plurality of blade groups constituting the propeller member 40 will be described in detail. As will be described later, the propeller member 40 of this embodiment includes a plurality of types of blades that differ from one another in shape or in the manner of attachment to the fitted portion 41. As can be seen from Figures 2, 7 and 13, it is preferable that the powder scraping rib 23 and the blade group are arranged in positions that overlap each other when viewed from above in the circumferential direction (when viewed from above in the Z direction).

[0050] As described above, the outer cover 20 and the propeller member 40 rotate synchronously around the axis, so that, for example, the positional relationship of the third pressing blade 44 with respect to the central divider 24 does not change, and the third pressing blade 44 is maintained in a state where it is positioned along and below the central divider 24 when viewed from the Z direction. Similarly, the first pressing blade 42 and the second pressing blade 43 are positioned directly below the Y-shaped first rib 23A, and this positional relationship is maintained even when rotating around the axis.

[0051] In this way, by positioning the powder leveling rib 23 and the group of blades of the propeller member 40 at the same position in the circumferential direction when viewed from above, it is possible to prevent a decrease in the aperture ratio when the powder is removed from the container. Furthermore, by adopting such an arrangement, the powder leveling rib 23 can level off at least a portion of the powder immediately below the group of blades pressing the powder against the mesh opening 12A. Furthermore, because the group of blades corresponds to the arrangement and leveling range of the powder leveling rib 23, it is possible to press the powder over almost the entire surface of the mesh opening 12A.

[0052] =First pressing blade= 14 and 15, first pressing blade 42 is provided so that at least a portion (for example, a portion excluding base blade 45, which will be described later) extends radially from fitted portion 41. As can be seen from FIG. 1 and other figures, first pressing blade 42 is configured to have the function of pressing powder inside the container against mesh opening 12A when outer lid 20 rotates clockwise (with the container facing downward). In this embodiment, "clockwise" and "counterclockwise" refer to directions when the container is turned upside down with the container mouth facing downwards.

[0053] 14 and 17, the first pressing blade 42 is inclined so that the surface on the forward side forms an acute angle with the upper surface of the mesh opening 12A when the outer lid 20 rotates clockwise. Similar to the inclination angle α of the second pressing blade 43 described below, the angle (inclination angle α) that the surface on the forward side of the first pressing blade 42 makes with the upper surface of the mesh opening 12A is preferably in the range of 40° to 60°, and particularly preferably around 45°. As shown in the drawing, the propeller member 40 of this embodiment may include a plurality of the above-described first pressing blades 42 arranged along the circumferential direction.

[0054] =Second pressing blade= 14 and 15, second pressing blade 43 is provided so that at least a portion (for example, a portion excluding base blade 45, which will be described later) extends radially from fitted portion 41. As can be seen from FIG. 1 and other figures, second pressing blade 43 is configured to have the function of pressing powder against mesh opening 12A when outer lid 20 rotates counterclockwise (with the container facing downward).

[0055] The second pressing blade 43 is inclined so that the surface on the moving side forms an acute angle with the upper surface of the mesh opening 12A when the outer lid 20 rotates counterclockwise. The angle (inclination angle α) that the surface on the moving side of the second pressing blade 43 makes with the upper surface of the mesh opening 12A is preferably in the range of 40° to 60°, and particularly preferably around 45°. As shown in the drawing, the propeller member 40 of this embodiment may include a plurality of the second pressing blades 43 described above arranged along the circumferential direction. In addition, the first pressing blades 42 and the second pressing blades 43 of this embodiment are preferably arranged alternately along the circumferential direction, as shown in FIG.

[0056] =Third pressing blade= 14 and 15, the third pressing blade 44 is provided so as to extend radially from the fitted portion 41. The third pressing blade 44 is provided along the boundary (central divider 24) between the mesh opening 12A and the non-mesh opening 12B. Note that if the entire surface of the inner cover plate 12 is formed with mesh openings 12A, the third pressing blade 44 may be omitted and the first pressing blade 42 and the second pressing blade 43 may form a blade group.

[0057] 17, the inclination angle α of the second pressing blade 43 with respect to the upper surface of the mesh opening 12A may be set smaller than the inclination angle β of the third pressing blade 44 with respect to the upper surface of the mesh opening 12A. Also, the inclination angle of the first pressing blade 42 with respect to the upper surface of the mesh opening 12A may be the same as the inclination angle of the second pressing blade 43 with respect to the upper surface of the mesh opening 12A.

[0058] Furthermore, as can be seen from Figures 14 and 18(a), it is preferable that the center lines CL1 (the center lines that divide the blades in half in the width direction) of the first pressing blade 42 and the second pressing blade 43 in this embodiment extend eccentrically with respect to the center axis O of the mating portion 41, so that their base ends are integrated to form a V-shape and connected to the mating portion 41.

[0059] In this way, the blade group does not extend radially from the central axis O of the fitted portion 41, but is shifted from the central axis O of the fitted portion 41 and eccentrically connected to the fitted portion 41 so that the powder can be caught or scraped inside the blades. This makes it possible to press the powder to be pressed evenly against the mesh opening 12A without shifting it radially outward, compared to an example in which the center line of the pressing blade passes through the central axis O of the fitted portion 41 (the case of FIG. 18(b)).

[0060] =Base Blade= 13 to 16, the propeller member 40 of this embodiment may be configured to include a base blade 45. As described above, the first pressing blade 42 and the second pressing blade 43 of this embodiment are eccentric from the central axis O of the fitted portion 41 and are inclined so as to be symmetrical with each other about the axial direction. Therefore, the base blade 45 is formed by integrating the base ends of the first pressing blade 42 and the second pressing blade 43 that are on the fitted portion 41 side and the mesh opening 12A side. The base blade 45 extends radially from the fitted portion 41 and is configured to be able to abut against the mesh opening 12A.

[0061] 14, when viewed from above, the first pressing blade 42, the second pressing blade 43, and the base blade 45 form a Y-shape with the upper surfaces of the blades facing the mesh opening 12A. At this time, the first pressing blade 42 and the second pressing blade 43 each extend eccentrically with respect to the central axis O of the fitted portion 41, and are connected to the fitted portion 41 and the base blade 45 so that at least a portion (the upper surface on the mesh opening 12A side) forms a V-shape.

[0062] In this way, the upper surfaces of the first pressing blade 42 and the second pressing blade 43 form a V shape, and when the upper surface of the base blade 45 is added to these, a Y shape is formed on the upper surface on the mesh opening 12A side. By providing the base blade 45 on the propeller member 40, as shown in Fig. 17, the base blade 45 exhibits a function of blocking (retaining) the powder, thereby preventing the powder from spilling out to the surrounding area.

[0063] 15, when viewed from the bottom (when viewed from below in the Z direction), a portion of each of the first pressing blade 42 and the second pressing blade 43 may be connected to the fitted portion 41 so that their undersides form a V shape. By directly connecting a portion of the first pressing blade 42 and the second pressing blade 43 (the other portion is connected to the base blade 45) to the fitted portion 41, it is possible to maximize the area for pressing the powder against the mesh opening 12A.

[0064] In this embodiment, the blade group (first pressing blade 42 to third pressing blade 44) is preferably a plate-like body extending radially from the mating portion 41, but at least a portion of it may be curved so as to be convex downward toward the mesh opening 12A.

[0065] Furthermore, the surfaces of the blade group (first pressing blade 42 to third pressing blade 44) that press the powder (for example, the pressing surface on the top side shown in FIG. 14) may be roughened with, for example, a plurality of protrusions or ribs. This makes it possible to efficiently press the powder against the mesh openings 12A without letting the powder escape. On the other hand, the surfaces of the blade group (first pressing blade 42 to third pressing blade 44) that do not press the powder (for example, the non-pressing surface on the bottom side shown in FIG. 15) may be processed or coated to reduce frictional resistance against the powder. In this way, the blades of this embodiment may be configured so that the pressing surfaces have a higher frictional resistance than the non-pressing surfaces.

[0066] 17, the group of blades constituting the propeller member 40 may be positioned so as to have a slight clearance CL (for example, about 1 mm to several mm) from the mesh opening 12A. This reduces the frictional resistance caused by contact between the mesh opening 12A and the blades, improving operability for the user. However, when using a material with negligible frictional resistance, the group of blades may be in contact with and slide against the mesh opening 12A.

[0067] <Method for extracting powder using a powder scraping rib and a propeller member in cooperation> Next, with reference to FIGS. 12 and 19, a method for removing powder using the synthetic resin cap 100 of this embodiment in which the powder scraping rib 23 and the propeller member 40 work together will be described. As shown in the same figure, when a user opens the opening / closing lid 26A for the first opening and holds the container upside down while rotating the outer lid 20 clockwise around the axis relative to the inner lid (at this time the opening / closing lid 26B for the second opening closes the second opening 25B), the rotation restriction rib 31 moves toward the other end ED2 within the rotation restriction groove 32 and stops rotating at the other end ED2.

[0068] At this time, the powder leveling rib 23 provided on the outer lid 20 rotates clockwise in synchronization with the rotation of the outer lid 20. Furthermore, at this time, the propeller member 40 provided integrally with the outer lid 20 also rotates in synchronization with the powder leveling rib 23, sandwiching the mesh opening 12A therebetween.

[0069] Furthermore, for example, if the user rotates the outer lid 20 counterclockwise around the axis relative to the inner lid after the rotation-restricting rib 31 has stopped at the other end ED2, the rotation-restricting rib 31 moves toward the one end ED1 within the rotation-restricting groove 32 and stops rotating when it reaches the one end ED1. At this time, in the same manner as described above, the powder-scraping rib 23 and the propeller member 40 also rotate counterclockwise in synchronization with the rotation of the outer lid 20.

[0070] Therefore, if a user repeats the above-described actions while holding the container upside down, the powder stored in the container will first reach mesh openings 12A due to its own weight, for example, via propeller member 40. Of the powder that reaches mesh openings 12A, powder that is relatively small in diameter and smaller than the openings passes directly through mesh openings 12A and is removed from the container. On the other hand, powder that has relatively increased in diameter due to agglomeration or the like may remain, for example, with at least a portion of it protruding from the openings of mesh openings 12A.

[0071] When a user holds outer lid 20 with the container facing downward and rotates it clockwise or counterclockwise relative to inner lid 10, powder leveling rib 23 and propeller member 40 rotate together on the front and back of mesh opening 12A in synchronization with the rotation of outer lid 20. Then, on the back side of mesh opening 12A, propeller member 40 presses the powder in the container against mesh opening 12A, facilitating the removal of the powder from the container. Furthermore, on the front side of mesh opening 12A, powder leveling rib 23 rotates, scraping off at least a portion of the powder remaining in the openings of mesh opening 12A, further accelerating the removal of the powder.

[0072] According to the synthetic resin cap 100 of this embodiment, it is possible to remove powder stored in a container while suppressing or eliminating clogging of the powder in the openings, without requiring special processing of the powder to prevent clogging of the openings, and while reducing costs.

[0073] Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention pertains can conceive of various modifications and alterations within the scope of the technical ideas set forth in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

[0074] For example, in the above embodiment, the inner wall 11 of the inner lid 10 is connected to the inner lid plate 12 at its upper end position (see Figure 6, etc.), but the present invention is not limited to this form, and may be, for example, connected to the inner lid plate 12 at a position slightly below the upper end position of the inner wall 11. Similarly, in the embodiment, the outer peripheral wall 21 of the outer lid 20 is connected to the outer lid plate 22 at its upper end position (see Figure 10, etc.), but the present invention is not limited to this form, and it may be, for example, connected to the outer lid plate 22 at a position slightly below the upper end position of the outer peripheral wall 21. [Industrial Applicability]

[0075] The present invention is suitable for realizing a synthetic resin cap that can be attached to a container for storing powder such as wheat flour, and that can remove the powder stored in the container while preventing or eliminating clogging of the powder in the opening of the removal port. [Explanation of symbols]

[0076] 100 Synthetic Resin Cap 10 Inner lid 11 Inner wall 12 Inner cover plate 20 Outer lid 21 Outer wall 22 Outer cover plate 23 Powder scraping rib 24 Median Strip 25 Opening 25A 1st opening 25B 2nd opening 26 Opening lid 26A Opening / closing lid for 1st opening 26B Opening / closing lid for second opening 27 Central Hub 28 Hook part 30 Rotation suppression mechanism 31 Rotation control rib 32 Rotation restriction groove 40 Propeller components 41 Fitting part 42 First pressing blade 43 Second pressing blade 44 Third pressing blade FP mating part Pt engaging protrusion

Claims

1. an inner lid including an inner peripheral wall having an engaging portion formed on the inner peripheral surface to engage with a container opening from which powder is dispensed, and an inner lid plate having a mesh opening facing at least a part of a pouring outlet in the container opening; An outer lid including an outer circumferential wall covering the outer surface of the inner circumferential wall, and an outer lid plate connected to the outer circumferential wall and provided with a powder scraping rib and having at least a first opening that can face the spout through the mesh opening; a propeller member that is combined with the outer lid so as to sandwich the inner lid plate and is rotatable around an axis relative to the inner lid integrally with the outer lid, A synthetic resin cap characterized in that, when the outer lid is rotated, the powder scraping rib rotates around an axis on the upper side of the mesh opening, and in synchronization with this, the propeller member rotates around the axis on the lower side of the mesh opening.

2. The outer cover plate has a centrally disposed fitting portion, The powder scraping rib extends radially from the fitting portion, the propeller member includes a fitted portion disposed at the center and capable of fitting with the fitting portion, and blades extending in the radial direction from the fitted portion, The inner cover plate has a central through hole formed therein, The synthetic resin cap according to claim 1 , wherein the fitting portion and the fitted portion are fitted together so as to sandwich the inner cover plate through the central through-hole.

3. The synthetic resin cap according to claim 2 , wherein the powder scraping rib and the blade are provided at positions that overlap each other in the circumferential direction when viewed from above.

4. The inner cover plate has non-mesh openings arranged next to the mesh openings in the circumferential direction, and A synthetic resin cap as described in any one of claims 1 to 3, wherein the outer cover plate has a second opening that can face the pouring outlet through the non-mesh opening and is arranged next to the first opening in the circumferential direction.

5. The synthetic resin cap according to claim 4 , further comprising a rotation restricting mechanism provided between the outer surface of the inner peripheral wall and the inner surface of the outer peripheral wall, capable of restricting rotation of the outer lid relative to the inner lid.

6. the propeller member includes a fitted portion disposed at the center and capable of fitting with the fitting portion, and blades extending in the radial direction from the fitted portion, The blade is a first pressing blade, at least a portion of which extends radially from the fitted portion and which presses the powder in the container against the mesh opening when the outer lid rotates clockwise; a second pressing blade, at least a portion of which extends radially from the fitted portion and which presses the powder against the mesh opening when the outer lid rotates counterclockwise; The synthetic resin cap according to claim 4, comprising:

7. The powder scraping rib is 5. The synthetic resin cap according to claim 4, further comprising first ribs provided on both circumferential ends of the first opening and flaring outward from the inside in the radial direction.

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