Container with lid

Abstract

To provide a container with a lid, in which a magnet can be fixed to a container body and a lid so as not to fall off and the magnet can be easily separated from the container body and the lid at the time of disposal.SOLUTION: In a container with a lid in which a container body B for storing a content and a lid C for closing the container body B are magnetically fitted, the container body B has a cylindrical mouth part 7 formed in an upper portion thereof, a slope groove 11 recessed in an outer peripheral surface of the cylindrical mouth part 7, and a container-side magnet 12 held in a lower end of the slope groove 11. The lid C has an inner cap C1, an outer cap C2 fitted to the outside of the inner cap C1, an inner cylindrical wall 21 formed in the inner cap C1 and slidable along the outer peripheral surface of the cylindrical mouth part 7, a magnet holder 41 capable of protruding from and retracting into the inner cylindrical wall 21 along a slope groove 11, and a lid-side magnet 40 held by the magnet holder 41 from an outer peripheral side of the inner cylindrical wall 21. The container-side magnet 12 is detachably held on an inner peripheral side of the cylindrical mouth part 7 by a magnet holding piece 15.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a lidded container comprising a container body for storing contents and a lid for closing the container body, and more particularly to a lidded container in which the container body and the lid are magnetically engaged. [Background technology]

[0002] BACKGROUND ART Lidded containers have been known which include a container body for storing contents such as cosmetic cream and a lid body for screwing onto a nozzle portion of the container body. When a user operates the lid of such a container with a lid while the contents are stuck to their hands, their hands tend to slip, making it difficult to open or close the lid. Therefore, even if a user's hand slips between the lid and the container body, it is necessary to easily open and close the lid relative to the container body.

[0003] To solve this problem, when the lid is pressed against the container body, the first protrusion moves along the first inclined portion, causing the lid to begin rotating relative to the container body.In the groove portion connected to the first inclined portion, a second magnet is provided at the end on the first inclined portion side, which is oriented in a direction that generates a repulsive force against the first magnet provided on the first protrusion.Therefore, a lidded container is known in which the lid automatically rotates due to this repulsive force until just before the container body is closed, even after the first protrusion has passed the first inclined portion (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-84667 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the lidded container described in Patent Document 1, magnets are fixed to both the container body and the lid, allowing the container body to be easily closed with the lid, making it easy to operate.However, in this lidded container, the magnets must be fixed to the container body and the lid so that they do not fall off, which creates the problem that no consideration is given to sorting the magnets when the lidded container is disposed of after use.

[0006] The present invention aims to solve the above problems and to provide a lidded container in which a magnet can be fixed to the container body and lid so that it does not fall off, and in which the magnet can be easily separated from the container body and lid when discarded. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a lidded container in which a container body for storing contents and a lid for closing the container body are magnetically engaged, the container body having a nozzle formed at the top, a sloped groove recessed in the outer peripheral surface of the nozzle, and a container-side magnet held at the lower end of the sloped groove, the lid having an inner cap, an outer cap fitted to the outside of the inner cap, an inner cylindrical wall formed on the inner cap and slidable along the outer peripheral surface of the nozzle, and a magnet extending from the inner cylindrical wall along the sloped groove. Radially A retractable magnet holder and a magnet holder that is attached to the outer periphery of the inner cylinder wall. In the held state, it is mounted so that it can be protruded and retracted in the radial direction. The container-side magnet is detachably held on the inner periphery of the nozzle portion by a magnet holding piece.

[0008] In an embodiment of the lidded container, the container body has a refill container stored within the nozzle portion and a fixed recess recessed into the inner surface of the nozzle portion, and the magnet holding piece that holds the container-side magnet is held in the fixed recess when the refill container is stored.The container body also has an insertion recess recessed upward from the lower part of the outer surface of the nozzle portion, and the magnet holding piece that holds the container-side magnet is held in the insertion recess of the nozzle.The lid has a lower wall that closes the lower surface from the lower end of the inner cylindrical wall to the outer periphery, and the lower wall opens outer periphery further than the magnet holder that holds the lid-side magnet and has an insertion opening for inserting the magnet holding piece removed from the container body.The lid-side magnet held by the magnet holder is removed by the container-side magnet of the magnet holding piece inserted through the insertion opening. [Effects of the Invention]

[0009] By adopting the above-described configuration, the lidded container of the present invention can fix the magnet to the container body and the lid so that it does not fall off, and the magnet can be easily separated from the container body and the lid when discarded. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a side cross-sectional view showing a state in which the lid is closed of a lidded container according to a first embodiment of the present invention. [Figure 2] 1A and 1B are diagrams showing a container body of a lidded container according to a first embodiment of the present invention, where (a) is a top view and (b) is a side view. [Figure 3] 1 is a side cross-sectional view showing a refill container and a container body of a container with a lid according to a first embodiment of the present invention. [Figure 4] 1A and 1B are diagrams showing a lid of a lidded container according to a first embodiment of the present invention, in which (a) is a side cross-sectional view and (b) is a bottom view. [Figure 5] 1 is a side cross-sectional view showing an inner cap and an outer cap of a lidded container according to a first embodiment of the present invention. [Figure 6]4A and 4B are diagrams showing the state in which the lid of the lidded container according to the first embodiment of the present invention is closed, in which (a) is an enlarged cross-sectional view of the main part of FIG. 4A, and (b) is a cross-sectional view taken along the X1-X1 arrows in (a). [Figure 7] 1A and 1B are diagrams showing a state in which the lid of the lidded container according to the first embodiment of the present invention is being opened, in which (a) is an enlarged cross-sectional view of a main part, and (b) is a cross-sectional view taken along the X2-X2 arrows in (a). [Figure 8] 1A and 1B are diagrams showing the procedure for separating magnets from a lidded container in the first embodiment of the present invention, in which (a) shows the magnet holding piece being inserted into the inner cap, (b) shows the lid-side magnet in the magnet holder being attracted by the container-side magnet of the magnet holding piece, and (c) shows the lid-side magnet and container-side magnet being pushed out of the magnet holding piece. [Figure 9] FIG. 4 is a side cross-sectional view showing a lidded container according to a second embodiment of the present invention in a closed state. [Figure 10] 10A and 10B are diagrams showing a container body of a lidded container according to a second embodiment of the present invention, in which (a) is a side cross-sectional view and a magnet holding piece that holds a container-side magnet, and (b) is a bottom view. DETAILED DESCRIPTION OF THE INVENTION

[0011] Next, the container with lid of the present invention will be described with reference to the drawings shown in the following examples. In the following description, the upward direction in FIG. 1 is referred to as "upper" and the downward direction is referred to as "lower." [Example]

[0012] In FIG. 1, A denotes a container with a lid, in which a container body B for storing contents such as cosmetic cream and a lid body C for closing the container body B are magnetically engaged with each other.

[0013] As shown in FIGS. 1 and 3, in this embodiment, the container body B contains the contents and houses a replaceable refill container B1. The refill container B1 comprises a cylindrical storage section 1 with a bottom for storing the contents, and a flange section 2 that is formed radially outward from the opening of the storage section 1 and has a ring-shaped flange section 2 when viewed from above.A locking lower tube section 3 is attached to the bottom surface of the storage section 1 and engages with the container body B.

[0014] As shown in Figures 2 and 3, the container body B has a horizontal shoulder 6 on a bottomless cylindrical body 5, and is integrally molded by erecting a cylindrical mouth 7 in the center of the shoulder 6. The outer periphery of the body 5 is formed into an approximately rectangular shape in plan view by multiple alternating side portions 5a and corner portions 5b. In this embodiment, the body 5 is a bottomless cylinder, but a bottom member that closes the bottomless body 5 may be provided.

[0015] The upper end of the nozzle 7 is formed with a reduced diameter, and an opening 8 is formed inside it, and the refill container B1 is stored through the opening 8, and the flange 2 of the refill container B1 is supported by the upper end of the nozzle 7. A cylindrical mounting tube 9 hangs down from the lower end of the opening 8 to mount the storage section 1 of the refill container B1, and the lower part of the mounting tube 9 is formed with a fitting section 10 that fits with the lower locking tube 3 of the refill container B1.

[0016] 2(b), slope grooves 11 consisting of inclined grooves are recessed at multiple locations (four locations in this embodiment) on the outer peripheral surface of the nozzle 7. In this embodiment, the slope grooves 11 are formed at four locations every quarter of the circumference (90°). A lower end 11a, which is one end in the circumferential direction, of the slope groove 11 is provided on the shoulder 6 side, and an upper end 11b, which is the other end, is provided on the opening 8 side.

[0017] Furthermore, at the lower end 11a, a container-side magnet 12 constituting the magnet fitting means is detachably held on the inner periphery of the cylindrical mouth portion 7 by a magnet holding piece 15 described later. Also, at the upper end 11b, a steep slope portion 13 is formed that continues from the groove bottom of the slope groove 11 to the outer periphery of the cylindrical mouth portion 7 in order to release the magnet fitting.

[0018] As shown in Figures 2(a) and 3, the container-side magnet 12 is held by the magnet holding piece 15 and is fitted into and held in a fixing recess 14 recessed into the inner surface of the nozzle portion 7, and a horizontal hole 14a is opened in the fixing recess 14, which extends to the slope groove 11 of the nozzle portion 7. As shown in Figure 8(c), the magnet holding piece 15 has an overall spoon-like shape, with a holding recess 16 formed on one side for holding the container-side magnet 12 with a holding protrusion 17 on the inner circumferential surface, and a knob 19 formed on the other side. Furthermore, an extrusion hole 18 is opened in the center of the bottom of the holding recess 16.

[0019] As shown in FIG. 4, the lid C is composed of an inner cap C1 on the inside and an outer cap C2 on the outside, and is integrally formed by fitting the outer cap C2 onto the outside of the inner cap C1. Furthermore, in the lid C, a lid-side magnet 40 constituting the magnet fitting means is held by a magnet holder 41 (described later) so as to be able to protrude and retract radially between the inner cap C1 and the outer cap C2.

[0020] As shown in Figure 5, the inner cap C1 comprises a top wall 20 that closes the storage section 1 of the refill container B1, an inner tube wall 21 that hangs down from the periphery of the top wall 20 and is slidable along the outer periphery of the mouth section 7, a bottom wall 22 that closes the underside of the inner tube wall 21 from its lower end to the outer periphery, and an attached outer wall 23 that stands upright from the periphery of the bottom wall 22.

[0021] A contact ring 24 is provided around the periphery of the top wall 20, which comes into contact with the upper end surface of the flange portion 2 of the refill container B1 to seal the inside of the refill container B1. In addition, a mounting slot 25 for mounting the magnet holder 41 is formed in the inner tube wall 21, an insertion opening 26 is opened in the lower wall 22 on the outer peripheral side (towards the mounting outer wall 23) of the magnet holder 41, and a fitting recess 27 is provided around the lower end of the outer periphery of the mounting outer wall 23 to fit with a fitting protrusion 37 of the outer peripheral wall 31 of the outer cap C2 described later.

[0022] As shown in Fig. 5, the outer cap C2 includes a top wall 30 similar in shape to the outer peripheral shape of the barrel 5 of the container body B, an outer peripheral wall 31 hanging down from the periphery of the top wall 30, and a pressing wall 32 hanging down from the underside of the top wall 30. As shown in Fig. 4(b), the outer periphery of the outer peripheral wall 31 is formed into a substantially rectangular shape in a plan view by a plurality of alternatingly continuous side portions 31a and corner portions 31b.

[0023] As shown in Figure 6(b), the pressure wall 32 includes an inner pressure wall 33 that contacts the inner tube wall 21 of the inner cap C1, an outer pressure wall 34 that contacts part of the mounting outer wall 23 of the inner cap C1 and is located on the outer periphery of the inner pressure wall 33, an opening 35 (see Figure 5(a)) that opens in the inner pressure wall 33 and restricts from above the magnet holder 41 that is mounted in the long mounting hole 25 in the inner tube wall 21 of the inner cap C1, and connecting walls 36 that connect the inner pressure wall 33 and the outer pressure wall 34 on both sides of the magnet holder 41. Additionally, a fitting protrusion 37 is provided around the inner circumferential lower end of the outer peripheral wall 31 to fit into the fitting recess 27 of the mounting outer wall 23 of the inner cap C1.

[0024] As shown in Figures 4 and 6, the lid-side magnet 40 constituting the magnet fitting means is held inside the magnet holder 41 and is mounted so as to be able to protrude and retract radially between the mounting slot 25 of the inner cap C1 and the opening 35 of the outer cap C2. As shown in Figure 8(a), the magnet holder 41 has a through hole 42 opening at the inner end, a reduced diameter portion 43 contacting the mounting slot 25 of the inner cap C1 and the opening 35 of the outer cap C2, an expanded diameter portion 44 contacting the bottom wall 22 of the inner cap C1 and the connecting wall 36 of the outer cap C2, a discharge hole 45 opening on the outer periphery, and a holding recess 46 that holds the lid body side magnet 40 by a holding protrusion 47 on the inner surface.

[0025] Next, the manner of use and the effects of this embodiment will be described. As shown in Figure 3, in the lidded container A of this embodiment, first, an integrally molded container body B is prepared, and then a container-side magnet 12 held by a magnet holding piece 15 is inserted into a fixed recess 14 recessed into the inner surface of the mouth portion 7.Then, a refill container B1 filled with contents is inserted through the opening 8 at the upper end of the mouth portion 7.The fitting portion 10 formed at the bottom of the mounting tube portion 9 of the container body B fits into the locking lower tube portion 3 of the refill container B1, thereby completing storage of the refill container B1. In the container body B, the storage section 1 of the refill container B1 prevents the magnet holding piece 15 fitted into the fixing recess 14 on the inner peripheral surface of the nozzle portion 7 from falling off to the inner peripheral side.

[0026] Next, as shown in Figure 5, prepare the inner cap C1 and outer cap C2 of the lid body C, and place the magnet holders 41 holding the lid body side magnets 40 into the four mounting elongated holes 25 of the inner cap C1, and then align the outer cap C2 from above the inner cap C1 and push it in the direction of the arrow, fitting the fitting recess 27 of the inner cap C1 into the fitting protrusion 37 of the outer cap C2, and the setting of the lid body C is completed as shown in Figure 4.

[0027] Next, to close the container body B with the lid body C, the lid body C is placed over the upper end of the mouth tube portion 7 of the container body B so that the side portion 31a and corner portion 31b of the outer wall 31 of the lid body C match the side portion 5a and corner portion 5b of the body portion 5 of the container body B.The lower inner end of the inner tube wall 21 of the inner cap C1 is guided by the mouth tube portion 7, which is formed in a tapered shape, and sinks into the outer periphery even though the magnet holder 41 protrudes from the inner tube wall 21, and the lid body C begins to descend.

[0028] Finally, as shown in Figure 1, when the lid body C descends to a position where the lower wall 22 abuts or is close to the shoulder portion 6 of the container body B, the lid body side magnet 40 facing the container side magnet 12 is attracted by the container side magnet 12 located at the lower end portion 11a of the slope groove 11 recessed in the outer peripheral surface of the nozzle portion 7, and as a result, as shown in Figure 6, the magnet holder 41 holding the lid body side magnet 40 protrudes and fits into the slope groove 11, completing the magnetic engagement between the container body B and the lid body C.

[0029] Next, when using the contents, when the lid body C is rotated by a predetermined angle (within 90° in this embodiment) in the opening direction relative to the container body B, the magnet holder 41 is guided by the slope groove 11 while still protruding into the slope groove 11 and moves from the lower end 11a toward the upper end 11b, thereby disengaging from the container-side magnet 12 and allowing the lid body C to move upward in the opening direction. Then, as shown in Figure 7, when the cover body C rises and the magnet holder 41 reaches the upper end 11b of the slope groove 11, the tip of the magnet holder 41 climbs up from the bottom of the slope groove 11 onto the outer surface of the nozzle portion 7 due to the steep slope portion 13 formed at the upper end 11b, and the magnet holder 41 can be moved radially outward. As a result, the contents can be taken out of the refill container B1 by simply lifting the lid C from the nozzle 7 of the container body B and opening the lid.

[0030] When the contents of the refill container B1 are gone, remove the lid C and push up the storage section 1 of the used refill container B1 from the bottom through the opening 8 of the container body B. This disengages the mounting tube section 9 of the container body B from the locking lower tube section 3 of the refill container B1, allowing the used refill container B1 to be easily removed from the container body B, as shown in Figure 3. Next, a new refill container B1 filled with the contents is stored in the container body B again, and by using it, the container body B and the lid C can be reused.

[0031] When the lidded container A of this embodiment is disposed of, the container-side magnet 12 and the lid-side magnet 40 can be easily separated from the container body B and the lid C, so the separation process will be described. First, as shown in Figure 3, when the refill container B1 is removed from the container body B, the magnet holding piece 15, which is fitted into the inner surface of the nozzle portion 7 and holds the container-side magnet 12, can be easily removed from the fixing recess 14.

[0032] Next, as shown in Figure 8(a), the magnet holding piece 15 holding the container-side magnet 12 removed from the container body B is inserted through the insertion opening 26 opened in the bottom wall 22 of the lid body C so that the container-side magnet 12 faces the magnet holder 41, and as shown in Figure 8(b), the lid body-side magnet 40 held by the magnet holder 41 is attracted to the container-side magnet 12 and adsorbs to the container-side magnet 12. Next, as shown in Figure 8(c), the magnet holding piece 15 is removed from the insertion port 26, and by inserting a rod-shaped member into the extrusion hole 18, the container-side magnet 12 and the lid-side magnet 40 can be separated from the magnet holding piece 15.

[0033] As described above, the lidded container A of this embodiment can hold the container side magnet 12 and the lid side magnet 40 in the container body B and the lid body C so that they do not fall off, and when disposed of, the container side magnet 12 and the lid side magnet 40 can be easily separated from the container body B and the lid body C. [Example]

[0034] Next, a second embodiment in which the configuration of the container body B of the first embodiment is modified will be described with reference to FIGS. In the following, the same components as those in the first embodiment are given the same reference numerals, and new reference numerals are given to changed parts of the container body B, and differences will be mainly described.

[0035] In FIG. 9, Aa denotes a lidded container in which a container body Ba for storing contents and a lid C for closing the container body Ba are magnetically fitted together. As shown in FIG. 10, in this embodiment, unlike the first embodiment, the container body Ba does not use a refill container, but stores the contents directly in the container body Ba.

[0036] The container body Ba is integrally formed with a bottomless cylindrical trunk 5 having a horizontal shoulder 6 on top, and a cylindrical neck 7 erected in the center of the shoulder 6. The upper end of the neck 7 is formed in a tapered shape, and an opening 8 is formed inside it, and a cylindrical body storage section 50 with a bottom is formed to store the contents through the opening 8.

[0037] As shown in Figures 9 and 10, the container-side magnet 12 is held by the magnet holding piece 55 and is inserted and held in an insertion recess 51 recessed upward from the lower part of the outer surface of the nozzle portion 7, and a pair of opposing anti-slip protrusions 52 protrude from the insertion recess 51 to hold the magnet holding piece 55 from both sides. 10(a), the magnet holding piece 55 has an overall spoon-like shape, with a holding recess 56 formed on one side for holding the container-side magnet 12 with a holding protrusion 57 on the inner circumferential surface, and a bent knob 59 formed on the other side. Furthermore, an extrusion hole 58 is opened in the center of the bottom of the holding recess 56.

[0038] Next, the manner of use and the effects of this embodiment will be described. 10, in the case of the lidded container Aa of this embodiment, first, an integrally molded container body Ba is prepared, and then a container-side magnet 12 held by a magnet holding piece 55 is fitted into an insertion recess 51 recessed upward from the bottom of the outer circumferential surface of the cylindrical mouth portion 7, and then the contents are filled through the opening 8 at the upper end of the cylindrical mouth portion 7. As a result, the magnet holding piece 55 fitted into the insertion recess 51 recessed upward from the bottom of the outer circumferential surface of the cylindrical mouth portion 7 is prevented from falling out of the cylindrical mouth portion 7 of the container body Ba by the anti-detachment protrusion 52 protruding from the insertion recess 51.

[0039] Next, as in the first embodiment, the inner cap C1 and the outer cap C2 are fitted together to complete the setting of the lid C. Thereafter, as in the first embodiment, the container body Ba is closed with the lid C, and the magnetic fitting between the container body Ba and the lid C is completed, as shown in Fig. 9.

[0040] In the lidded container Aa of this embodiment, as in the first embodiment, the container-side magnet 12 and the lid-side magnet 40 can be easily separated from the container body Ba and the lid C when discarded. As shown in Figure 10, the magnet holding piece 55, which is inserted into an insertion recess 51 recessed upward from the lower part of the outer peripheral surface of the nozzle portion 7 of the container body Ba and holds the container-side magnet 12, can be easily removed from the insertion recess 51 by hooking a finger on the curved part of the grip portion 59.

[0041] Then, as in the first embodiment, the magnet holding piece 55 holding the container-side magnet 12 extracted from the container body Ba is inserted through the insertion opening 26 opened in the bottom wall 22 of the lid body C so that the container-side magnet 12 faces the magnet holder 41, and after the lid-side magnet 40 held by the magnet holder 41 is attracted to the container-side magnet 12, a rod-shaped member is inserted into the extrusion hole 58 of the magnet holding piece 55 extracted from the insertion opening 26, thereby separating the container-side magnet 12 and the lid-side magnet 40 from the magnet holding piece 55. Other functions and effects are the same as those of the first embodiment. [Industrial Applicability]

[0042] The lidded container of the present invention can fix the magnet to the container body and the lid so that it does not fall off, and the magnet can be easily separated from the container body and the lid when discarded, making it particularly suitable as a lidded container for storing contents such as cosmetic cream. [Explanation of symbols]

[0043] A, Aa Container with lid B, Ba container body B1 Refill Container C Lid body C1 Inner cap C2 outer cap 1 Storage section 2 Flange 3 Locking lower cylinder part 5. Torso 5a, 31a side 5b, 31b corner 6 Shoulder 7 Mouth part 8 Openings 9 Mounting tube 10 Fitting part 11 Slope groove 11a Lower end 11b Upper end 12 Container side magnet 13 Steep slope 14 Fixed recess 14a Horizontal cave 15, 55 Magnet holding piece 16, 46, 56 Retaining recess 17, 47, 57 Retaining protrusion 18, 58 extrusion holes 19, 59 Knob 20 Ceiling wall 21 Inner cylinder wall 22 Lower wall 23 Exterior wall installation 24 Contact Ring 25 Mounting slot 26 Insertion port 27 Fitting recess 30 Top Wall 31 Outer wall 32 Retaining wall 33 Inner pressure wall 34 Periphery support wall 35 Opening 36 Connecting wall 37 Fitting protrusion 40 Lid side magnet 41 Magnet holder 42 through holes 43 Reduced diameter part 44 Expanded diameter part 45 Discharge hole 50 Main unit storage area 51 Inset recess 52 Anti-slip protrusion

Claims

1. A container with a lid, in which a container body for storing contents and a lid body for closing the container body are magnetically engaged, The container body has a nozzle formed at an upper portion, a sloped groove recessed in the outer peripheral surface of the nozzle, and a container-side magnet held at a lower end of the sloped groove, The lid body has an inner cap, an outer cap fitted to the outside of the inner cap, an inner cylindrical wall formed in the inner cap and slidable along the outer peripheral surface of the nozzle portion, a magnet holder capable of extending and retracting radially from the inner cylindrical wall along the slope groove, and a lid body side magnet attached so as to be able to extend and retract radially while being held by the magnet holder from the outer peripheral side of the inner cylindrical wall, A container with a lid, characterized in that the container-side magnet is detachably held on the inner periphery of the nozzle by a magnet holding piece.

2. The container body has a refill container stored in the nozzle portion and a fixing recess recessed into the inner circumferential surface of the nozzle portion, 2. The container with lid according to claim 1, wherein the magnet holding piece for holding the container-side magnet is held in the fixing recess by storing the refill container.

3. The container body has a fitting recess recessed upward from the lower part of the outer peripheral surface of the nozzle part, 2. The container with lid according to claim 1, wherein the magnet holding piece for holding the container-side magnet is held in a fitting recess in the nozzle portion.

4. The lid body has a lower wall that closes the lower surface of the inner cylindrical wall from the lower end to the outer circumferential side, A lidded container as described in any one of claims 1 to 3, characterized in that the lower wall opens outward from the magnet holder that holds the lid-side magnet and has an insertion opening for inserting a magnet holding piece removed from the container body.

5. 5. The container with lid according to claim 4, wherein the lid-side magnet held by the magnet holder is removed by the container-side magnet of the magnet holder piece inserted through the insertion opening.

Images