A locking mechanism for a lid and a container equipped with a locking mechanism for a lid.

Abstract

To provide a locking mechanism for the lid closing tool that enables easy opening and closing operation of the lid closing tool with a small number of revolutions, even when slippage is generated between the operator's hand and the lid closing tool.SOLUTION: A locking mechanism for a lid closing tool 20 covers a mouth tube 13 erected on a container body 10, where a slope groove 15 is provided on an outer circumferential surface 13A of the mouth tube 13, a guide member 30 that can move in the slope groove 15 in a circumferential direction and a radial direction is provided on a side surface of the lid closing tool 20. And locking means R1 for engaging both is provided between a lower end 15a of the slope groove 15 and the guide member 30, and locking release means R2 for releasing the engagement with the guide member 30 is provided on an upper end 15b of the slope groove 15.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a locking mechanism for a lid using a magnet. and containers equipped with a locking mechanism for the lid. It relates to.

Background Art

[0002] As a locking mechanism when attaching a lid to the mouth tube portion of a container body, a screw mechanism in which a male screw is formed on the outer peripheral surface of the mouth tube portion and a female screw is formed on the inner peripheral surface of the lid, and these are engaged and screwed together has been widely used (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the content filled in the container body when using the screw mechanism as described above is a content such as a moisturizing cream or a massage cream, if the lid is gripped with the content adhering to the operator's hand, it is likely that slippage will occur between the hand and the lid. Therefore, it becomes difficult to align for engaging the screw mechanism, or it becomes difficult to rotate the lid in the circumferential direction (screwing direction and unscrewing direction), resulting in a problem that it becomes difficult to smoothly perform the opening and closing operation of the lid. In addition, in many conventional ones using a screw mechanism, since it is necessary to rotate the lid at least once, there is also a problem that the opening and closing operation is complicated.

[0005] An object of the present invention is to create a locking mechanism for a lid that enables easy opening and closing operation of the lid with a small number of rotations even when slippage occurs between the operator's hand and the lid, in order to solve the above problems in the prior art. and containers equipped with a locking mechanism for the lid. It is an object to do. [Means for solving the problem]

[0006] Among the means for solving the above problems, the first means of the present invention is: A locking mechanism for a lid that fits onto a mouth section erected on the container body, A slope groove is provided on the outer circumferential surface of the mouth section, and a guide member is provided on the side surface of the closing device that can move circumferentially and radially within the slope groove. The lower end of the slope groove and the guide member are placed between the two. Using the attractive force of magnets engagement Let Locking mechanism At least two in the circumferential direction The invention is characterized by the provision of a lock release mechanism at the upper end of the slope groove for releasing engagement with the guide member. The first means of the present invention makes it unnecessary to align the lid closing device with the mouth portion of the container body when closing the lid, and makes it possible to set the lid to a closed state (locked state) and an open state (unlocked state) with a small number of rotations.

[0007] Furthermore, the second means of the present invention is that, in addition to the first means of the present invention, a locking means is provided on the container side magnet provided on the mouth portion and on the lid closing device The lid This adds the element of being composed of side magnets. In the above method, the magnetic attraction between the container-side magnet and the lid-side magnet causes the tip of the guide member to protrude into the lower end of the slope groove and engage, thereby ensuring that the locking mechanism is reliably set to the locked state.

[0008] Furthermore, a third means of the present invention adds to the first or second means described above that the unlocking means is composed of a steep slope that extends from the bottom of the slope groove to the outer surface of the mouth section. In the above method, when the closing device is rotated in the closing direction, the tip of the guide member moving within the slope groove rides up the steep slope and reaches the outer surface of the mouth section, thereby ensuring that the locking mechanism is reliably set to the unlocked state.

[0009] Furthermore, a fourth means of the present invention is also possible in which the unlocking means of the first or second means is composed of a magnet that exerts a repulsive force with the lid-side magnet. In the above method, the magnetic repulsive force acting between the magnet on the container side and the magnet on the lid side allows the tip of the guide member to be kept in a non-protruding state, thereby ensuring that the locking mechanism is reliably set to the unlocked state.

[0010] Furthermore, a fifth means of the present invention adds to the third means described above that the guide member is formed with a convex cross-section by having a narrow-diameter engaging portion protruding from a wide-diameter bottom portion in which a lid-side magnet is embedded, and is loosely inserted into a recess and through hole provided in the closing device so as to be able to move radially back and forth. In the above method, when a closing device is attached to the mouth portion of the container body and an opening and closing operation is performed, the guide member can be moved radially inward and radially outward in response, thereby ensuring that the locking mechanism is reliably set to the locked state (when extended) and the unlocked state (when not extended).

[0011] Furthermore, the sixth means of the present invention is as described above. A container equipped with a locking mechanism for a lid closing device as described in the first means, The closing device is configured to have an outer lid and an inner lid provided inside the outer lid to fit the mouthpiece, and a simple valve is provided between the inner lid and the mouthpiece to form a sealing portion. It is characterized by the following: The above means, after use container It can maintain airtightness.

[0012] Furthermore, this invention 7th The means are as described above. A container equipped with a locking mechanism for a lid closing device as described in the first means, A refill container is provided with a flexible wall portion that can bend and deform radially and has a locking portion at the lower end of the mouth portion, and a locking portion that can be locked to the locking portion on the inside of the flexible wall portion. It is characterized by the following: The above method allows for a refill container having a locking mechanism for the lid. [Effects of the Invention]

[0013] In the present invention, since circumferential alignment between the lid and the mouth tube portion can be made unnecessary, even when slippage occurs between the operator's hand and the lid, the opening and closing operation of the lid can be surely performed. Also, the opening and closing operation of the lid can be performed with a small number of rotations.

Brief Description of the Drawings

[0014] ? ? [Figure 1] ? As a first embodiment of the present invention, FIG. 1 is an exploded perspective view showing an overall schematic of a container provided with a locking mechanism for a lid. ? [Figure 2] ? FIG. 2 is a partial cross-sectional view showing a schematic of the main part of the present invention, where (a) shows the locked state (lid-closed state) and (b) shows the unlocked state (lid-open state). ? [Figure 3] ? As a second embodiment of the present invention, FIG. 3 is a cross-sectional view showing the right half of a container provided with a locking mechanism for a lid. ? [Figure 4] ? As a third embodiment of the present invention, FIG. 4 is a cross-sectional view showing the right half of a container provided with a locking mechanism for a lid. ? [Figure 5] ? As a fourth embodiment of the present invention, FIG. 5 is a cross-sectional view showing the right half of a container provided with a locking mechanism for a lid.<000009'9>? ?

Modes for Carrying Out the Invention

[0015] ? ? Hereinafter, embodiments of the present invention will be described with reference to the drawings. <00001'05> ? FIG. 1 is an exploded perspective view showing an overall schematic of a container provided with a locking mechanism for a lid as a first embodiment of the present invention, and FIG. 2 is a partial cross-sectional view showing a schematic of the main part of the present invention, where (a) shows the locked state (lid-closed state) and (b) shows the unlocked state (lid-open state). Note that FIG. 2(a) corresponds to a cross-sectional view at the lower end position of the slope groove, and FIG. 2(b) corresponds to a cross-sectional view at the upper end position of the slope groove. Also, in the following description, the radial direction means a direction orthogonal to the container axis O, and the circumferential direction means a direction that circulates around the container axis O (lid-closed direction and lid-open direction). It should be noted that there are some question marks in the translation as the original text seems to be incomplete or unclear in those parts. For example, the "?" symbols in lines - and - are due to the lack of clear content in the original text for those tags.

[0016] First, the configuration of container 1, which is equipped with a locking mechanism for the lid, will be described. As shown in Figure 1, the container 1 equipped with a locking mechanism for the lid consists of a container body 10 into which contents such as moisturizing cream or massage cream are filled, and a lid closing device 20, both of which are mainly made of synthetic resin material.

[0017] The container body 10 has a horizontal shoulder portion 12 on a bottomed cylindrical body portion 11, and is integrally formed by erecting a cylindrical mouth portion 13 in the central part of the shoulder portion 12. The upper end of the mouth portion 13 is formed in a tapered shape, and an opening 14 is formed inside it. In addition, slope grooves 15, which are inclined grooves, are recessed at multiple locations (four locations in the first embodiment) on the outer circumferential surface 13A of the mouth portion 13. In the first embodiment, the slope grooves 15 are formed at four locations every quarter of a turn (90 degrees). The lower end 15a of the slope groove 15, which is one end in the circumferential direction, is provided on the shoulder portion 12 side, and the upper end 15b, which is the other end, is provided on the opening 14 side. Furthermore, a container-side magnet 16, which constitutes a locking means R1 that is part of the locking mechanism, is fixed to the lower end portion 15a, and a lock release means R2, which is part of the locking mechanism, is fixed to the upper end portion 15b, and a steep slope portion 17 is formed that extends from the bottom of the slope groove 15 to the outer circumferential surface 13A of the mouth portion 13.

[0018] The lid closing device 20 is composed of a top-cylindrical inner lid 21, a top-cylindrical outer lid 22, and a guide member 30 that constitutes the body of the locking mechanism, and is integrally formed when the inner lid 21 is fitted inside the outer lid 22. Multiple circular recesses 21a are recessed at several circumferential positions (four in the first embodiment) on the outer surface of the side wall 21A of the inner lid 21, and a through hole 21b is drilled in the center of each recess 21a, passing radially through the side wall 21A. The diameter of the through hole 21b is smaller than the diameter of the recess 21a.

[0019] As shown in Figures 1 and 2(a) and 2(b), the guide member 30 has a convex cross-section, with a narrow-diameter engaging portion 32 protruding from a wide-diameter bottom portion 31 into which the lid-side magnet 33, which together with the container-side magnet 16 described above, constitutes the locking means R1 which is part of the locking mechanism, is embedded. The guide member 30 is loosely inserted into the recess 21a and through hole 21b so as to be able to move back and forth in the radial direction.

[0020] Next, the operation and function of the locking mechanism of the lid fastener provided on the above-mentioned container will be explained. (1) Closed state (locked state) As shown in Figure 2(a), when the lid is closed, with the lid closing device 20 attached to the mouth portion 13 on the container body 10 side, the lower end of the lid closing device 20 abuts against or is close to the surface of the shoulder portion 12 on the container body 10 side, and the recess 21a and through hole 21b provided in the inner lid 21 on the lid closing device 20 side are positioned radially opposite to the lower end 15a of the slope groove 15 on the mouth portion 13. Then, the magnetic attraction acting between the container-side magnet 16 (locking means R1) on the container body 10 side and the lid-side magnet 33 (locking means R1) on the lid closing device 20 side causes the guide member 30 to move radially inward (towards the container axis O), and the slender engaging portion 32 protrudes into the lower end 15a of the slope groove 15 and engages, setting it to a locked state. This locked state is achieved simultaneously at multiple locations in the circumferential direction (four locations in the first embodiment), thereby setting the lid closing device 20 to a closed state.

[0021] (2) Open state (unlocked state) Next, to move the lid closing device 20 from the closed state to the open state, the lid closing device 20 is rotated by a predetermined angle in the opening direction. As a result, the guide member 30 is guided by the slope groove 15 with the engaging portion 32 protruding into the slope groove 15, and moves from the lower end 15a to the upper end 15b, thereby allowing the lid closing device 20 to move upward in the opening direction. The predetermined angle here refers to the circumferential angle corresponding to the distance between the lower end 15a and the upper end 15b of the slope groove 15 when viewed from the outer circumferential surface 13A of the mouth portion 13 from the container axis O, and in the first embodiment, it is 1 / 4 rotation (90 degrees) or less.

[0022] Then, as shown in Figure 2(b), when the lid closing device 20 rises and the guide member 30 reaches the upper end 15b of the slope groove 15, the tip of the guide member 30 (the tip of the engaging portion 32) rides up from the bottom of the slope groove 15 to the outer circumferential surface 13A of the mouth section 13 by the steep slope portion 17 (lock release means R2) provided at the upper end 15b, thereby moving the guide member 30 radially outward (away from the container axis O). That is, the guide member 30 moves toward the recess 21a and through hole 21b, and the tip of the engaging portion 32 is retracted into the through hole 21b, setting it to an unlocked state (non-protruding state) where the engagement is released. Therefore, it can be set to an open state in which the lid closing device 20 can be pulled up and removed. Note that in the position shown in Figure 2(b), the container-side magnet 16 and the lid-side magnet 33 are separated in the circumferential and height directions, and no magnetic attraction acts between the two magnets.

[0023] (3) Re-closing the lid (locked state) To return the lid closing device 20 from the open state to the closed state, the lid closing device 20 is placed over the mouth section 13 from above. Since the guide member 30 is loosely inserted into the recess 21a and through hole 21b, it can be attached simply by placing it over the mouth section without worrying about aligning the tip of the engaging portion 32 with the slope groove 15. After attachment, if the lid closing device 20 is rotated by at most a predetermined angle (less than 1 / 4 of a turn in the first embodiment), the guide member 30 is moved radially inward by the magnetic attraction acting when the container-side magnet 16 and the lid-side magnet 33 face each other, and the tip of the engaging portion 32 protrudes into the lower end 15a of the slope groove 15 and engages, thus setting it to the locked state again (see Figure 2(a)). In this case, the direction in which the lid closing device 20 is rotated may be in the closing direction or the opening direction. Furthermore, if the container-side magnet 16 and the lid-side magnet 33 are already facing each other when the lid closing device 20 is placed over the mouth section 13, the magnetic attraction will act as soon as the attachment is complete, locking the device in place and eliminating the need for rotation. Of course, the locking mechanism 20 can also be attached while rotating it in the closing direction to align the container-side magnet 16 and the lid-side magnet 33 and set to the locked state.

[0024] Thus, with the locking mechanism of the lid closing device of the present invention, the lid can be set to the closed state by simply rotating the lid closing device 20 by at most a predetermined angle (less than 1 / 4 of a turn in the first embodiment) after placing it over the mouthpiece portion 13, and the lid can be set to the open state by rotating it by a predetermined angle in the opening direction. Therefore, the opening and closing operation of the lid closing device 20 can be performed more easily compared to conventional screw mechanisms that require the lid closing device 20 to be rotated at least one full turn. Furthermore, in the closing operation, circumferential alignment between the closing device 20 and the mouth section 13 is unnecessary, so even if there is slippage between the operator's hand and the closing device 20, the opening and closing operation of the closing device 20 can be reliably performed.

[0025] Next, the second to fourth embodiments of the present invention will be described with reference to Figures 3 to 5. The main difference between the second to fourth embodiments of the present invention and the first embodiment is the addition of a simple valve to maintain airtightness. In the following description of each embodiment, the same reference numerals will be used for components identical to those in the first embodiment, focusing on the differences.

[0026] Figure 3 is a cross-sectional view showing the right half of a container equipped with a locking mechanism for the lid, as a second embodiment of the present invention. As shown in Figure 3, the container 1 equipped with the locking mechanism of the lid closing device shown in the second embodiment is composed of a container body 10 and a lid closing device 20, which are mainly made of synthetic resin material, and the lid closing device 20 is composed of an inner lid 21, an outer lid 22 and a newly added inner cap 23 made of synthetic resin.

[0027] Similar to the first embodiment, the inner lid 21 is integrally formed by fitting it inside the outer lid 22, and the inner cap 23 has a fitting locking portion 23a formed in an L-shape in cross-section on its outer edge and is detachably fitted to the upper end surface of the mouth portion 13 of the container body 10. An annularly formed simple valve 40 is fixed to the radially outer position of the lower surface 21C of the inner lid 21. The simple valve 40 is made of an elastic material such as silicone rubber and consists of a fixing portion 41 fixed to the lower surface 21C of the inner lid 21 and an elastic piece 42 that extends radially outward in a thin annular shape from the inner edge on the lower side of the fixing portion 41 and is formed to be elastically deformable.

[0028] Furthermore, a pressing piece 23b is provided at the center of the inner cap 23, which is erected upward and whose upper end can contact the center of the top wall portion 23A of the inner cap 23. In the guide member 30 shown in the second embodiment, a lid-side magnet 33, which constitutes the locking means R1 that is part of the locking mechanism, is embedded on the inner diameter side of a small diameter engaging portion 32 having a convex cross-section. Therefore, similar to the first embodiment, when the lid is closed, the guide member 30 is moved radially inward (towards the container axis O) by the magnetic attraction acting between the lid-side magnet 33 and the container-side magnet 16, which constitutes the locking means R1 that is fixed to the lower end 15a of the slope groove 15, and the small diameter engaging portion 32 protrudes into the lower end 15a of the slope groove 15 and engages, thereby setting it to the locked state.

[0029] In the closed (locked) state, the inner lid 21 fits over the inner cap 23 and a portion (upper part) of the mouth section 13, and at the central position (container axis O), the upper end of the pressing piece 23b on the inner cap 23 side is set to contact the lower surface 21C of the inner lid 21. This prevents the inner cap 23 from opening unintentionally during the distribution of the container 1, thus preventing leakage of the contents contained in the container 1.

[0030] At the same time, at the radially outer position, a sealing portion S is formed around the entire circumference of the upper end surface 13a of the mouthpiece portion 13 by an elastic piece 42 extending from the fixed portion 41 of the simple valve 40 pressing downwards against the upper end surface 13a of the mouthpiece portion 13. As a result, even after opening the lid holder 20 and removing the inner cap 23 to take out the contents (after use), when the lid holder 20 is reattached to the closed position, the simple valve 40 presses around the entire circumference of the upper end surface 13a to form the sealing portion S, thus maintaining airtightness.

[0031] Figure 4 is a cross-sectional view showing the right half of a container equipped with a locking mechanism for the lid, as a third embodiment of the present invention. The third embodiment shown in Figure 4 is a modification of the second embodiment, and the difference from the second embodiment lies in the mounting position of the simple valve 40. That is, in the second embodiment, the simple valve 40 is provided on the lower surface 21C of the inner lid 21, whereas in the third embodiment, it is provided around the upper outer circumference of the mouthpiece portion 13. The simple valve 40 is formed in an annular shape, and the elastic piece 42 extends downward from the outer upper end of the fixing portion 41 and is provided around the outside of the fixing portion 41. Furthermore, the elastic piece 42 extending from the fixed portion 41 of the simple valve 40 abuts against the inner circumferential surface 21B of the side wall of the inner lid 21, and a sealing portion S is formed around the entire circumference by elastic pressure toward the radially outward direction, similar to the second embodiment.

[0032] Figure 5 is a cross-sectional view showing the right half of a container equipped with a locking mechanism for the lid, as a fourth embodiment of the present invention. The fourth embodiment shown in Figure 5 is a modification of the second embodiment, and the difference from the second embodiment is that a replaceable synthetic resin refill container 50 is used. In other words, the refill container 50 is composed of a bottom wall portion 51, a body wall portion 52 connected to the bottom wall portion 51 and formed to have a diameter that allows it to be attached to and detached from the mouth portion 13 on the container body 10 side, and a flange 53 extending radially outward from the upper end of the body wall portion 52. Furthermore, a protruding piece 54 with a locking portion 54a is provided circumferentially on the radially outward surface of the lower end of the body wall portion 52.

[0033] On the other hand, the container body 10 has a pair of flexible wall portions 18 that extend inward toward the body portion 11 and are radially flexible, hanging down from the lower end of the mouth portion 13 in an axially symmetrical position. On the inner surface of each of these pairs of flexible wall portions 18, a locking portion 18a is formed that can engage with and hold the locking portion 54a on the refill container 50 side.

[0034] In the fourth embodiment, the bottom of the container body 10 (the lower end of the body portion 11) is open, and the bottom wall portion 51 and flexible wall portion 18 of the refill container 50 are shown and described. However, it may also be a configuration in which a bottom cover is attached to the lower end of the body portion 11 in a way that allows it to be attached and detached by screwing.

[0035] In the container 1 equipped with a locking mechanism for the lid closing device shown in the fourth embodiment, when the lid is open with the lid closing device 20 removed, inserting the refill container 50 into the mouth section 13 causes the flange 53 on the refill container 50 side to contact the upper end surface of the mouth section 13 on the container body 10 side, and at the same time, the locking portion 54a on the refill container 50 side to lock with the locking portion 18a on the container body 10 side, thereby fixing the refill container 50 inside the mouth section 13.

[0036] Next, when the lid closing device 20 is closed again (locked), similar to the second embodiment described above, at the central position (container axis O), the upper end of the pressed piece 23b on the inner cap 23 side is set to contact the lower surface 21C of the inner lid 21. At the same time, at the radially outward position, a seal portion S is formed around the entire circumference of the upper end surface 13a of the mouthpiece portion 13 by the elastic piece 42 of the simple valve 40 pressing downward. This prevents unintended opening of the inner cap 23 during distribution and maintains airtightness by forming the seal portion S.

[0037] Furthermore, to replace a used refill container 50 with a new one, the user inserts their fingers into the open bottom of the container body 10 (the lower end of the body portion 11) and performs a simple operation of pressing the pair of flexible wall portions 18 radially outward to widen the gap between them. This releases the locking portion 18a on the pair of flexible wall portions 18 and the locked portion 54a on the refill container 50, allowing the refill container 50 to be easily removed from inside the mouth portion 13 by pulling it upward.

[0038] The configuration and effects of the present invention have been described above in accordance with the examples, but the embodiments of the present invention are not limited to the above examples. For example, in the above embodiment, the case in which the slope groove 15, container-side magnet 16, and lid-side magnet 33 are arranged at four positions in the circumferential direction was described. However, if the arrangement is to be evenly distributed in the circumferential direction, it may be two or three positions, or it may be possible to form them at five or more positions. In this case, the predetermined angle is 1 / 2 rotation for two positions, 1 / 3 rotation for three positions, and 1 / 5 rotation for five positions.

[0039] Furthermore, although the above embodiment described a case in which the locking means R1 is composed of a container-side magnet 16 and a lid-side magnet 33, it may also be composed of a magnet provided on one of the mouth section 13 and the lid closing device 20, and a ferromagnetic metal (such as iron, nickel, or cobalt) provided on the other.

[0040] Furthermore, in the above embodiment, the lock release means R2 for moving the guide member 30 radially outward when the lid is opened was described in which a steep slope portion 17 was formed at the upper end 15b of the slope groove 15. However, instead of the steep slope portion 17, a magnet that acts as a magnetic repulsion between it and the lid-side magnet 33 may also be used.

[0041] Furthermore, although the above embodiment was described in which the recess 21a into which the guide member 30 is loosely inserted and the through hole 21b are formed only in the inner lid 21 of the closing device 20, it is also possible to form a recess 21a on the inner circumferential surface of the outer lid 22 and a through hole 21b in the inner lid 21. [Industrial applicability]

[0042] This invention relates to a locking mechanism for a lid. and containers equipped with a locking mechanism for the lid. This allows for the development of applications in this field in an even wider range of areas. [Explanation of symbols]

[0043] 1 : Container 10: Container body 11: Torso 12: Shoulder 13: Mouth tube part 13A: Outer surface of the nozzle 13a: Upper end surface 14: Opening 15: Slope groove 15a: Lower end of slope groove 15b: Upper end of slope groove 16: Container-side magnet (locking mechanism) 17: Steep slope section (means for unlocking) 18: Flexible wall part 18a: Locking part 20 : Closing tool 21: Inner lid 21A: Side wall 21B: Inner peripheral surface of side wall 21C: Bottom surface 21a: Recess 21b: Through hole 22: Outer lid 23: Inner cap 23A: Ceiling wall section 23a: Fitting and locking part 23b: Pressed piece 30: Guide member 31 : Bottom 32: Engaging part 33: Magnet on the lid (locking mechanism) 40: Simple valve 41:Fixed part 42: Elastic piece 50: Refill container 51: Bottom wall 52: Trunk wall part 53: Flange 54:Protruding piece 54a:Locked part O: Container axis R1: Locking mechanism R2: Unlocking method S: Seal part

Claims

1. A locking mechanism for a lid closing device (20) that fits onto a mouth tube portion (13) erected on the container body (10), A slope groove (15) is provided on the outer circumferential surface (13A) of the mouth tube portion (13), and a guide member (30) that can move circumferentially and radially within the slope groove (15) is provided on the side surface of the closing device (20). A locking mechanism for a lid closing device (20), characterized in that at least two locking means (R1) are provided circumferentially between the lower end (15a) of the slope groove (15) and the guide member (30) to engage them using the attractive force of a magnet, and a lock release means (R2) is provided at the upper end (15b) of the slope groove (15) to release the engagement with the guide member (30).

2. The locking mechanism for a lid closeer according to claim 1, wherein the locking means (R1) is composed of a container-side magnet (16) provided on the mouth portion (13) and a lid-side magnet (33) provided on the lid closeer (20).

3. The locking mechanism for a lid closing device according to claim 1 or 2, wherein the unlocking means (R2) is configured as a steep slope portion (17) that extends from the bottom of the slope groove (15) to the outer circumferential surface (13A) of the mouth portion (13).

4. The locking mechanism for a lid closing device according to claim 1 or 2, wherein the unlocking means (R2) is composed of a magnet that acts a repulsive force between itself and the lid-side magnet (33).

5. The locking mechanism for a lid closing device according to claim 3, wherein the guide member (30) is formed in a convex cross-section by having a narrow-diameter engaging portion (32) protruding from a wide-diameter bottom portion (31) into which a lid-side magnet (33) is embedded, and is loosely inserted into the recess (21a) and through hole (21b) provided in the lid closing device (20) so as to be able to move back and forth in the radial direction.

6. A container equipped with a locking mechanism for a lid closing device as described in Claim 1, A container equipped with a locking mechanism for a lid closing device, characterized in that the lid closing device (20) comprises an outer lid (22) and an inner lid (21) provided inside the outer lid (22) and fitted over the mouth tube portion (13), and a simple valve (40) is provided between the inner lid (21) and the mouth tube portion (13) to form a sealing portion (S).

7. A container equipped with a locking mechanism for a lid closing device as described in Claim 1, A container equipped with a locking mechanism for a lid, characterized in that a flexible wall portion (18) that can be deformed radially and has a locking portion (18a) at the lower end of the mouth portion (13), and a refill container (50) having a locking portion (54a) that can be locked to the locking portion (18a) on the inside of the flexible wall portion (18).

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