Mobile body holding mechanism, lid and locking device

Abstract

To provide a movable object holding mechanism, a lid, and a locking device that can use magnets to set the movement characteristics of the movable object relative to a base and hold the movable object in a holding position. [Solution] The movable body holding mechanism comprises a movable body 11 on which a first magnet 3 is provided, and a base body 21 on which a second magnet 4 is provided, and a guide mechanism for guiding the movable body 11 in the R direction is configured between the base body 21 and the movable body 11. The magnetic axes of the first magnet 3 and the second magnet 4 are arranged along the R direction, and the guide mechanism guides the first magnet 3 to at least a first position in the R direction where opposite poles are positioned close to the second magnet 4, and a second position P2 in the R direction where the same poles are positioned close to the second magnet 4.

Description

Technical Field

[0001] The present invention relates to a moving body holding mechanism, a lid, and a locking device (Locking device) that use a magnet to hold a moving body movable with respect to a base body at a predetermined position.

Background Art

[0002] Conventionally, a lid for a beverage container having an openable and closable opening is known (see Patent Document 1). This lid includes a lid member in which an opening is formed, and a slider that slides between an open position and a closed position so as to be able to open and close the opening. The lid member is provided with one magnet disposed at the open position and another magnet disposed at the closed position, and the slider is provided with a magnet that attracts one magnet at the open position and attracts the other magnet at the closed position. In this lid, the magnets provided on the lid member at the open and closed positions and the slider attract each other, so that the slider can be fixed to the lid member at the open or closed position.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the lid described in Patent Document 1, only the above-described aspect is used to align the slider with the lid member, so it is difficult to set the movement characteristics when a moving body such as a slider moves with respect to a base body such as a lid member using a magnet and to hold the moving body at the holding position.

[0005] The object of the present invention is to provide a movable body holding mechanism, a lid, and a locking device that can set the movement characteristics of a movable body relative to a base using a magnet and hold the movable body in a holding position. [Means for solving the problem]

[0006] [1] The movable body holding mechanism of the present invention comprises a movable body on which a first magnet is provided, and a base body on which a second magnet is provided, and a guide mechanism for guiding the movable body in the direction of movement is configured between the movable body and the movable body, wherein the magnetic axes of the first magnet and the second magnet are arranged along the direction of movement, and the guide mechanism guides the first magnet to at least a first position in which opposite poles are positioned close to the second magnet in the direction of movement, and a second position in which the same poles are positioned close to the second magnet in the direction of movement.

[0007] [2] In the movable body holding mechanism of the present invention, the guide mechanism is configured to guide the first magnet to a third position in the direction of movement that sandwiches the second position between it and the first position, and at the third position, the first magnet may be positioned with opposite poles in close proximity to the second magnet.

[0008] [3] In the movable body holding mechanism of the present invention, the thickness direction of the base body is along a direction perpendicular to the direction of movement, and the second magnet may be positioned on the side that intersects the thickness direction with respect to the movement trajectory of the first magnet which moves together with the movement of the movable body.

[0009] [4] In the movable body holding mechanism of the present invention, the thickness direction of the base body is along a direction perpendicular to the direction of movement, and the second magnet may be positioned above and below the movement trajectory of the first magnet which moves together with the movement of the movable body, along the thickness direction.

[0010] [5] In the movable body holding mechanism of the present invention, the guide mechanism may guide the first magnet in the straight-line direction as the direction of movement.

[0011] [6] In the movable body holding mechanism of the present invention, the guide mechanism may guide the first magnet in the rotational direction as the direction of movement.

[0012] [7] The lid of the present invention is a lid of a beverage container comprising the movable body holding mechanism described above, wherein the base of the movable body holding mechanism has a lid opening, and the movable body of the movable body holding mechanism is configured to move in the direction of movement so that its first magnet can be positioned at least in the first position and the second position, and the lid opening may be closed by the movable body when the first magnet is positioned in the first position, or it may be in an open state when the lid opening is opened by the movable body when the first magnet has moved from the first position in the direction of movement.

[0013] [8] In the cover of the present invention, the base may be configured to hold the movable body based on the repulsive force generated between the first magnet and the second magnet when the first magnet is positioned at the second position.

[0014] [9] The lid of the present invention is a movable body holding mechanism having the configuration described in [2] above, wherein the movable body is in a closed state in which the lid opening of the base is closed when the first magnet is positioned at the first position, and is in an open state in which the lid opening of the base is opened when the first magnet is positioned at the third position.

[0015]

[10] In the lid of the present invention, the movable body may have a magnetic material that is attracted to the second magnet of the base by magnetic force.

[0016]

[11] In the lid of the present invention, the movable body may have a closing projection that fits into the lid opening when the lid opening is closed and that disengages from the lid opening when the movable body moves.

[0017]

[12] In the cover of the present invention, the direction of movement is the rotational direction, and one of the moving body and the base body has a shaft portion that pivotally supports the moving body so as to be rotatable relative to the base body in the rotational direction, and the other of the moving body and the base body may have a bearing portion connected to the shaft portion.

[0018]

[13] In the cover of the present invention, the shaft portion may be composed of a disc-shaped projection, and the bearing portion may form a circular hole space in which the projection is arranged.

[0019]

[14] In the cover of the present invention, the shaft portion is formed on the base, the bearing portion is formed on the movable body, the movable body has a magnetic material that is attracted by magnetic force to the second magnet of the base, and the magnetic material may be arranged opposite to the shaft portion in the axial direction of the shaft portion and attracted to the second magnet.

[0020]

[15] In the lid of the present invention, the magnetic material may be formed in the shape of a disc, and the center of the magnetic material may be located on the axis through which the moving body rotates.

[0021]

[16] In the lid of the present invention, the movable body and the base body overlap, and the movable body and the base body may each have a fitting portion that fits together in the direction in which the movable body and the base body overlap, at least in the closed state of the lid opening.

[0022]

[17] The cover of the present invention may have a contact portion that contacts the moving body when the base is positioned at least one of the first position and the third position.

[0023]

[18] In the lid of the present invention, the base has an outer peripheral edge on the outer peripheral side with respect to the lid opening, and the movable body may be in surface contact with the outer peripheral edge.

[0024]

[19] In the lid of the present invention, the outer peripheral edge portion has a first surface portion orthogonal to the thickness direction of the base body and a second surface portion intersecting the first surface portion, and the moving body in the closed state may be in surface contact with both the first surface portion and the second surface portion.

[0025]

[20] The locking device of the present invention is a locking device in which the moving body holding mechanism of the present invention described above is configured, and the base body is provided at a position deviated from the position of the moving body in a state where the first magnet is disposed at the first position in the moving direction, and has a detachable portion for making the moving body detachable.

[0026]

[21] In the locking device of the present invention, the moving body holding mechanism is a moving body holding mechanism having the configuration described in [2] above, and the base body may be configured to hold the moving body in a state where the first magnet is disposed at the first position and a state where the first magnet is disposed at the third position.

[0027]

[22] In the locking device of the present invention, the base body forms an engaging portion recessed in a direction in which the first magnet approaches the second magnet in a direction intersecting the moving direction, and the first magnet may be disposed in the engaging portion at the first position.

Effect of the Invention

[0028] According to the present invention, it is possible to provide a moving body holding mechanism, a lid, and a locking device that can set the moving characteristics of a moving body with respect to a base body using a magnet and can hold the moving body at a holding position.

Brief Description of the Drawings

[0029] [Figure 1] Developed perspective view showing the lid according to the first embodiment of the present invention. [Figure 2] Perspective view showing the lid according to the first embodiment from the front side. [Figure 3] Perspective view showing the lid according to the first embodiment from the back side. [Figure 4] Cross-sectional view taken along the line IV-IV shown in FIG. 3. [Figure 5] A plan view illustrating the closed state of the lid according to the first embodiment, as seen from the front. [Figure 6] A plan view illustrating an intermediate state of the lid according to the first embodiment, as seen from the front. [Figure 7] A plan view illustrating the open state of the lid according to the first embodiment, as seen from the front. [Figure 8] A schematic diagram relating to the opening and closing operation of the lid according to the first embodiment. [Figure 9] A perspective view showing a locking device according to a second embodiment of the present invention. [Figure 10] An explanatory diagram relating to the opening and closing operation of the locking device according to the second embodiment. [Figure 11] An explanatory diagram relating to the opening and closing operation of a locking device according to a third embodiment of the present invention. [Figure 12] An explanatory diagram relating to the opening and closing operation of a locking device according to the fourth embodiment of the present invention. [Figure 13] An explanatory diagram relating to the opening and closing operation of a locking device according to a fifth embodiment of the present invention. [Figure 14] An explanatory diagram relating to the opening and closing operation of a locking device according to the sixth embodiment of the present invention. [Figure 15] A cross-sectional view illustrating a modified example of the lid according to the first embodiment. [Modes for carrying out the invention]

[0030] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In Figures 1 to 8, the lid 10 according to the first embodiment is attached to the container opening of a beverage container 2 such as a tumbler, allowing the container opening to be opened and closed. The lid 10 comprises a movable body 11 that is rotatable in the R direction (direction of movement in the first embodiment) and is provided with one first magnet 3, and a base body 21 that is combined with the movable body 11 and is provided with one second magnet 4. Except for the first magnet 3, the second magnet 4, and the magnetic material 13 described later, the lid 10 is made of a non-magnetic resin material. The first magnet 3 and the second magnet 4 are appropriately configured as permanent magnets such as neodymium magnets, ferrite magnets, samarium cobalt magnets, and alnico magnets. In the following explanation, for convenience, the front-to-back direction of the lid 10 will be the X1 direction, the left-to-right direction of the lid 10 will be the Y1 direction, and the up-to-down direction of the lid 10 will be the Z1 direction (thickness direction). The X1, Y1, and Z1 directions are orthogonal to each other. The forward direction in the X1 direction is the +X1 direction, and the backward direction in the X1 direction is the -X1 direction. The right direction in the Y1 direction is the +Y1 direction, and the left direction in the Y1 direction is the -Y1 direction. The upward direction in the Z1 direction is the +Z1 direction, and the downward direction in the Z1 direction is the -Z1 direction. In addition, one side in the R direction mentioned above will be the +R direction side (the side that closes the lid opening 221, which will be described later), and the other side in the R direction will be the -R direction side (the side that opens the lid opening 221).

[0031] (Mobile unit 11) The movable body 11 is configured as an opening and closing member that opens and closes the lid opening 221. The movable body 11 is formed in a flattened shape and has a bearing portion 12 that forms a circular hole space and an opening and closing portion 15 that protrudes from the bearing portion 12 in the +X1 direction.

[0032] A magnetic body 13, formed in the shape of a disc from a magnetic metal or the like, is provided at the upper end of the bearing portion 12. The magnetic body 13 constitutes the bottom surface of the bearing portion 12, and therefore the bearing portion 12 forms a hole space that opens downwards. The center of the bearing portion 12 is positioned on the axis along the axial direction A, which will be described later, when the movable body 11 rotates in the R direction. The magnetic body 13 is appropriately made from a metal material such as iron-nickel or cobalt. This magnetic body 13 is attracted to the second magnet 4 by magnetic force and attracts the movable body 11 to the base body 21 in the -Z1 direction, thereby maintaining the combined state of the movable body 11 and the base body 21. In this embodiment, the movable body 11 and the base body 21 are not mechanically constrained to move from one another in the -Z1 direction, and are combined by the force of the magnetic body 13 being attracted to the second magnet 4. Therefore, the movable body 11 can be attached to the base body 21 simply by bringing it close to the base body 21, and the movable body 11 can be removed from the base body 21 simply by moving it away from the base body 21, making it easy to attach and detach the movable body 11 and improving the maintainability of the lid body 10. In addition, since the magnetic material 13 of the movable body 11 is attracted using the second magnet 4, there is no need to provide a separate magnet for this attraction, thus simplifying the configuration. Furthermore, by positioning the magnetic material 13 on the shaft portion, even when the movable body 11 rotates, the distance between the magnetic material 13 and the second magnet 4 can be kept constant, stabilizing the attractive force that attracts the magnetic material 13 to the second magnet 4. Also, since the magnetic material 13 is attracted to the second magnet 4, there is no need to provide a separate magnet for attracting the magnetic material 13, thus simplifying the configuration of the movable body holding mechanism described later.

[0033] The lower surface of the opening / closing section 15 is provided with a closing projection 16 that protrudes slightly downward (see Figure 4). The closing projection 16 has a shape complementary to the lid opening 221 of the base body 21, which will be described later. The opening / closing part 15 closes and opens the lid opening 221 by the rotational movement of the movable body 11 in the R direction. In this embodiment, the opening / closing part 15 is positioned on the lid opening 221 by the movement of the movable body 11 in the +R direction, and the closing projection 16 fits into the lid opening 221 due to the force by which the magnetic body 13 is attracted to the second magnet 4 in the -Z1 direction, thereby tightly closing the lid opening 221. Furthermore, the opening / closing part 15 detaches from the lid opening 221 in the -R direction as the movable body 11 moves in the -R direction, and as the opening / closing part 15 moves slightly away from the lid opening 221 in the +Z1 direction against the force by which the magnetic body 13 is attracted to the second magnet 4, the closing projection 16 smoothly detaches from the lid opening 221 and moves in the -R direction, opening the lid opening 221. Furthermore, as the opening / closing unit 15 moves in the -R direction, the closing projection 16 presses against the lid opening 221 and moves slightly in the +Z1 direction, disengaging from the lid opening 221 and moving toward the -R direction. In this embodiment, since the lid opening 221 is opened and closed in this manner, compared to, for example, the case where the movable body 11 and the base body 21 are mechanically restrained in the Z1 direction, the frictional resistance between the closing projection 16 and the base body 21 when the opening / closing unit 15 rotates can be reduced, and the closing projection 16 can be prevented from getting caught on the lid opening 221. Moreover, when the lid opening 221 is closed, the closing projection 16 can be tightly fitted into the lid opening 221, effectively preventing liquid from leaking from inside the beverage container 2.

[0034] The first magnet 3 is provided in the opening / closing section 15 at a position between the bearing section 12 and the closing projection section 16. In this embodiment, as shown in Figures 5 to 8, the north pole of the first magnet 3 is positioned on the -R direction side, and the south pole of the first magnet 3 is positioned on the +R direction side. Therefore, the arrangement direction of the north and south poles present in a single first magnet 3 (same magnet) is along the R direction (direction of movement). In this embodiment, the magnetic axis line connecting the north and south poles of the first magnet 3 is a straight line, but it is included in the range where it is positioned along the R direction. The first magnet 3 is positioned at a first position P1, a second position P2, and a third position P3 along a trajectory in the R direction as the moving body 11 rotates in the R direction. The first position P1 is on the +R and +Y1 side, the third position P3 is on the -R and -Y1 side, and the second position P2 is sandwiched between the first position P1 and the third position P3. In the first position P1, the first magnet 3 is positioned closer to the +R direction relative to the second magnet 4; in the second position P2, the first magnet 3 is positioned opposite the second magnet 4 in the X1 direction, which is perpendicular to the Y1, Z1, and R directions; and in the third position P3, the first magnet 3 is positioned closer to the -R direction relative to the second magnet 4.

[0035] The aforementioned movable body 11 is arranged such that the opening / closing part 15 can open and close the lid opening 221 by rotational movement in the R direction with the center of the bearing part 12 as the axis. When the first magnet 3 is positioned at the first position P1, the lid opening 221 is closed, while when the first magnet 3 is positioned at the third position P3, the lid opening 221 is opened.

[0036] (Base 21) The base 21 constitutes the main body portion of the lid 10 that closes the container opening of the beverage container 2. The base 21 has a disc-shaped lid body portion 22, an annular lid mounting portion 23 extending downward from the periphery of the lid body portion 22, and an annular lid edge portion 24 provided in the continuous portion between the lid body portion 22 and the lid mounting portion 23.

[0037] As shown in Figure 1, for example, the lid body portion 22 has a lid opening 221 which serves as the drinking spout for the liquid inside the beverage container 2, a vent hole 222 for reducing the pressure difference between the inside and outside of the beverage container 2, a shaft portion 223 which pivotally supports the movable body 11 so that it can rotate in the R direction relative to the base 21, a contact portion 224 which abuts the opening / closing portion 15 of the movable body 11 from the +R direction side when the lid opening 221 is closed, and a contact portion 225 which abuts the opening / closing portion 15 of the movable body 11 from the -R direction side when the lid opening is open. Furthermore, the lid body portion 22 has an outer peripheral edge portion 228 on the outer circumferential side of the lid opening 221, as shown in Figure 4, for example. The outer peripheral edge portion 228 has a first surface portion 228A perpendicular to the Z1 direction and a second surface portion 228B that intersects with the first surface portion 228A and extends downward. Here, the opening and closing portion 15 of the movable body 11 has a first contact surface portion 151A that makes surface contact with the first surface portion 228A and a second contact surface portion 151B that makes surface contact with the second surface portion 228B. When the movable body 11 is in a closed state with the lid opening 221 closed, the first contact surface portion 151A and the second contact surface portion 151B make surface contact with the first surface portion 228A and the second surface portion 228B, which are two surfaces that intersect with each other, so that leakage of liquid from the lid opening 221 of the beverage container 2 can be further suppressed. In this embodiment, the first contact surface portion 151A and the second contact surface portion 151B are in surface contact with the first surface portion 228A and the second surface portion 228B, which are two surfaces that intersect with each other. However, the embodiment is not limited to this, and for example, even if one of the first contact surface portion 151A and the second contact surface portion 151B is in surface contact with one of the first surface portion 228A and the second surface portion 228B, and the other surface portion of the first contact surface portion 151A and the second contact surface portion 151B is not in surface contact with the other surface portion of the first surface portion 228A and the second surface portion 228B, if liquid leakage can be suppressed sufficiently, then only one of the first contact surface portion 151A and the second contact surface portion 151B is in surface contact with one of the first surface portion 228A and the second surface portion 228B.

[0038] As shown in Figures 1 and 7, the lid opening 221 is provided at a position near the outer circumference of the lid body 22, penetrating from the top surface to the bottom surface of the lid body 22. In this embodiment, the lid opening 221 has a curved shape that extends along the R direction. This lid opening 221 is closed by the closing projection 16 and its surrounding portion of the opening / closing part 15 of the movable body 11 when it is closed. Furthermore, the lid opening 221 is not limited to the curved shape described above, but can be formed in any appropriate shape, such as a trapezoid.

[0039] The ventilation hole 222 is provided extending from the top surface to the bottom surface of the lid body 22 at a position where the shaft portion 223 is sandwiched between it and the lid opening 221. In this embodiment, the ventilation hole 222 is formed as a circular hole, and this ventilation hole 222 is covered by the bearing portion 12 of the movable body 11. Here, the bearing portion 12 has a protrusion 121 that fits into the ventilation hole 222 when the lid opening 221 is closed, as shown in Figure 4. The protrusion 121 is positioned to fit into the ventilation hole 222 or to be positioned away from the ventilation hole 222 in the R direction as the movable body 11 rotates. When the lid opening 221 is closed, the ventilation hole 222 is closed by the protrusion 121 and its surrounding area, and when the lid opening 221 is open, the protrusion 121 rides up on the upper surface of the lid body 22, allowing ventilation through the gap between the movable body 11 and the lid body 22 that is formed.

[0040] The shaft portion 223 is composed of a disc-shaped projection that protrudes upward from the central position of the lid body portion 22. The shaft portion 223 has an outer dimension equivalent to the inner diameter of the bearing portion 12 of the movable body 11, and is positioned in the hole space formed by the bearing portion 12, with the outer circumferential surface 223A of the shaft portion 223 sliding in contact with the inner circumferential surface 122 of the bearing portion 12. In other words, the shaft portion 223 is fitted and connected to the bearing portion 12 and supports the bearing portion 12, so that the movable body 11 can be rotated stably in the R direction relative to the base body 21.

[0041] Furthermore, the shaft portion 223 has a recess 226 that opens on the lower surface of the lid body portion 22 and is recessed upward. A second magnet 4 is provided in this recess 226, and the opening of the recess 226 is closed by a closing body 226A. The tip of the shaft portion 223 is positioned opposite the axial direction A of the shaft portion 223, which is in the Z1 direction relative to the lower surface of the magnetic material 13. In this embodiment, the second magnet 4 has been described as being provided in the recess 226, but it is not limited to this and may be embedded in the shaft portion 223. The embedding of the second magnet 4 may be performed, for example, when the base body 21 is constructed in one injection molding, or when the base body 21 is constructed in two injection moldings.

[0042] As shown in Figures 5 to 8, the north pole of the second magnet 4 is positioned on the -R side, and the south pole of the second magnet 4 is positioned on the +R side. Therefore, the orientation of the north and south poles in a single second magnet 4 (same magnet) is along the R direction (direction of movement). In this embodiment, the magnetic axis connecting the north and south poles of the second magnet 4 is a straight line, but it is included in the range where it is positioned along the R direction. Furthermore, the second magnet 4 is positioned laterally, intersecting the movement trajectory T1 (see Figures 5 to 8) of the first magnet 3, which rotates along with the rotational movement of the moving body 11 in the R direction, in the Z1 direction. In this embodiment, the second magnet 4 is positioned on the inner circumference side in a plane along the X1 and Y1 directions with respect to the movement trajectory T1. The height position of the second magnet 4 is the same as the height position of the first magnet 3. For this reason, the attractive and repulsive forces between the second magnet 4 and the first magnet 3 can be strengthened compared to, for example, the case where the second magnet 4 is positioned diagonally opposite to the first magnet 3. Furthermore, the aforementioned magnetic material 13 is attracted to the second magnet 4 by magnetic force, thereby maintaining a state in which the moving body 11 and the base body 21 are overlapping and combined in the Z1 direction.

[0043] Furthermore, the lid body portion 22 has an outer peripheral projection 227 that protrudes upward in plan view from the outer circumference of its upper surface. The contact portion 224 is formed at one end of the outer peripheral projection 227. The contact portion 225 is formed at the other end of the outer peripheral projection 227.

[0044] Furthermore, a guide mechanism 25 for guiding the movable body 11 in the R direction is configured between the base body 21 and the movable body 11. In this embodiment, the guide mechanism 25 is configured such that the outer peripheral surface 223A of the shaft portion 223 slides against the inner peripheral surface 122 of the bearing portion 12, and auxiliaryly, the outer peripheral end of the opening / closing portion 15 of the movable body 11 is arranged to slide against the inner peripheral surface of the lid edge portion 24 along the R direction. Therefore, it is possible to eliminate the need to use a separate configuration from the movable body 11 and the base body 21 to construct the guidance mechanism 25, thereby simplifying the configuration of the movable body holding mechanism.

[0045] The guide mechanism 25 guides the first magnet 3 in the R direction to the aforementioned first position P1, second position P2, and third position P3. At the first position P1, as shown in Figure 5, opposite poles of the first magnet 3 and the second magnet 4 (here, the north pole of the first magnet 3 and the south pole of the second magnet 4) are placed in close proximity. At the second position P2, as shown in Figure 6, the same poles of the first magnet 3 and the second magnet 4 (the north poles of the first magnet 3 and the south poles of the second magnet 4) are placed in close proximity. At the third position P3, as shown in Figure 7, opposite poles of the first magnet 3 and the second magnet 4 (here, the south pole of the first magnet 3 and the north pole of the second magnet 4) are placed in close proximity.

[0046] The lid mounting portion 23, as shown in Figures 1 to 4, for example, has an annular body 231 and mounting ribs 232 intermittently provided along the circumferential direction of the outer peripheral surface 231A of the body 231. The lid mounting portion 23 is inserted into the container opening of the beverage container 2, and the mounting rib 232 presses against the inner circumferential surface of the beverage container 2, thereby detachably attaching the lid 10 to the beverage container 2. The mounting rib 232 can be omitted, in which case a packing can be provided on the main body 231 so that it fits snugly and adequately to the opening of the beverage container 2.

[0047] The lid edge portion 24 protrudes further outward than the outer circumference of the lid mounting portion 23 and is designed to overlap the edge of the container opening of the beverage container 2. Furthermore, the inner circumference portion of the lid edge portion 24 has a portion that is continuous with the aforementioned outer peripheral projection portion 227 and a portion where the inner surface of the lid edge portion 24 is exposed. This exposed inner surface is configured to guide the outer peripheral end of the opening / closing portion 15 of the movable body 11 in the R direction.

[0048] The aforementioned base 21 closes the container opening of the beverage container 2 when the lid attachment portion 23 is attached to the container opening of the beverage container 2. Furthermore, the lid opening 221 of the base 21 can be opened and closed by the rotational movement of the movable body 11.

[0049] The lid 10, configured in this way, constitutes a movable body holding mechanism with the aforementioned movable body 11 and base 21. This movable body holding mechanism is configured to hold the movable body 11, which rotates relative to the base 21, at the first position P1 or third position P3 by an attractive force described later, while simultaneously biasing the movable body 11 from the second position P2 towards the first position P1 or the third position P3 by a repulsive force described later, thereby adding a unique movement characteristic to the movable body 11.

[0050] [Lid operation] The following describes the opening and closing operation of the lid opening 221 in the lid 10 mentioned above.

[0051] (Opening operation) First, as shown in Figures 5 and 8, the movable body 11 is positioned to close the lid opening 221. In this position, the first magnet 3 is positioned at the first position P1, and since the north pole of the first magnet 3 and the south pole of the second magnet 4 are in close proximity to each other, an attractive force is generated between the first magnet 3 and the second magnet 4, and the position of the first magnet 3 is maintained. As a result, the movable body 11 is kept in a closed state with the lid opening 221 closed.

[0052] Next, when the moving body 11 is rotated in the -R direction by manual operation, the first magnet 3 rotates in the -R direction along the movement trajectory T1, resisting the attractive force between it and the second magnet 4. Furthermore, if, for example, manual operation is stopped and the fingers are released from the moving body 11, the attractive force between the first magnet 3 and the second magnet 4 will cause the first magnet 3 to return to its first position P1.

[0053] Next, when the moving body 11 is rotated further in the -R direction by manual operation, the north pole of the first magnet 3 is pulled away from the south pole of the second magnet 4 and moves closer to the north pole of the second magnet 4. As a result, a repulsive force is generated between the first magnet 3 and the second magnet 4, and the force resisting the rotational movement of the moving body 11 in the -R direction due to magnetic force gradually increases until the first magnet 3 reaches the second position P2.

[0054] Next, as shown in Figures 6 and 8, when the first magnet 3 reaches the second position P2 due to the movement of the moving body 11 in the -R direction, the north poles and south poles of the first magnet 3 and the second magnet 4 are positioned close together and facing each other in the X1 direction, resulting in a large repulsive force between the first magnet 3 and the second magnet 4. At this time, if the first magnet 3 moves slightly toward the first position P1 relative to the second magnet 4, the first magnet 3 is biased in the +R direction by the repulsive force, and the opening / closing part 15 of the moving body 11 is propelled to rotate in the +R direction. Also, if the first magnet 3 moves slightly toward the third position P3 relative to the second magnet 4, the first magnet 3 is biased in the -R direction by the repulsive force, and the opening / closing part 15 of the moving body 11 is propelled to rotate in the -R direction. For this reason, the moving body 11 does not remain in an intermediate state where the first magnet 3 is at the second position P2, but is always in either the closed or open state of the lid opening 221, ensuring more reliable opening and closing operation.

[0055] Next, when the movable body 11 is further rotated in the -R direction by manual operation, the repulsive force generated between the first magnet 3 and the second magnet 4, as described above, biases the opening and closing part 15 of the movable body 11 in the -R direction, and it rotates with momentum in the -R direction.

[0056] Next, when the moving body 11 is rotated further in the -R direction, the south pole of the first magnet 3 approaches the north pole of the second magnet 4, generating an attractive force. The first magnet 3 is then pulled towards the third position P3 in the -R direction by this attractive force, and the moving body 11 rotates further in the -R direction. Finally, as shown in Figures 7 and 8, when the first magnet 3 is positioned at the third position P3, the south pole of the first magnet 3 and the north pole of the second magnet 4 are placed in close proximity to each other. The attractive force generated between the first magnet 3 and the second magnet 4 holds the first magnet 3 in the third position P3, and the movable body 11 maintains an open state with the lid opening 221 open. Furthermore, when the movable body 11 is in the open state, the opening / closing part 15 of the movable body 11 collides with the contact part 225 by rotational movement in the -R direction, generating an audible signal that the movable body 11 is in the open state, and also restricting further rotational movement of the movable body 11 in the -R direction.

[0057] In this way, the lid opening 221 of the lid body 10 is opened.

[0058] (Closing action) The closing operation of the lid opening 221 of the lid 10 is performed in a substantially similar manner to the opening operation described above, generating magnetic force in the reverse procedure, so a detailed explanation is omitted. When the movable body 11 is in the closed state, the opening / closing part 15 of the movable body 11 collides with the contact part 224 by rotational movement in the +R direction, thereby generating an audible signal that the movable body 11 is in the closed state and restricting further rotational movement of the movable body 11 in the +R direction.

[0059] The opening and closing operation described above can be achieved by providing just two magnets, the first magnet 3 and the second magnet 4. Therefore, for example, it is not necessary to provide magnets on the base that generate an attractive force with the first magnet 3 at each of the first position P1 and third position P3, which reduces the number of magnets required, thus simplifying the structure and reducing costs. Furthermore, if there is no need to reduce the number of magnets, additional magnets may be provided to further stabilize the opening and closing operation. In other words, three or more magnets may be provided. Furthermore, the specific movement characteristics of the mobile body 11 may be appropriately set according to the usage by, for example, arranging the second magnet 4 closer to the first position P1 or closer to the third position P3, or by changing the length relationship between the first magnet 3 and the second magnet 4. These settings can be achieved by arranging the second magnet 4 between the first position P1 and the second position P2. Furthermore, since the first magnet 3 rotates along the R direction, it moves in a way that wraps around the second magnet 4 when rotating in the +R or -R direction. Compared to a configuration where the first magnet 3 moves in a straight line, for example, when the first magnet 3 is positioned at the first position P1 or the third position P3, the opposite poles can be positioned closer to the second magnet 4, thereby increasing the holding force that keeps the first magnet 3 and, consequently, the moving body 11, in a fixed position.

[0060] As described above, the lid 10 allows the position of the movable body 11 to be maintained by the attractive force between the first magnet 3 and the second magnet 4, thereby allowing the lid opening 221 to be kept in a suitable closed and open state. Furthermore, during the rotational movement of the movable body 11, the repulsive force generated between the first magnet 3 and the second magnet 4 when the first magnet 3 passes the second position P2 can bias the movable body 11 in the R direction, thereby allowing the lid 10 to have unique movement characteristics.

[0061] [Second Embodiment] A second embodiment of the present invention will be described below with reference to the drawings. In Figures 9 and 10, the locking device 50 according to the second embodiment is installed on the opening and closing part of a bag such as a school bag to lock and unlock it. The locking device 50 comprises a movable body 51 that is movable in the straight-line direction, the Y2 direction (direction of movement in the second embodiment), and is provided with one first magnet 3, and a base body 61 that is combined with the movable body 51 and is provided with one second magnet 4. Except for the first magnet 3 and the second magnet 4, the locking device 50 is made of non-magnetic material. In the following explanation, for the sake of clarity, the front-to-back direction of the locking device 50 will be defined as the X2 direction, the left-to-right direction of the locking device 50 will be defined as the Y2 direction (direction of movement in the second embodiment), and the up-to-down direction of the locking device 50 will be defined as the Z2 direction (thickness direction). The X2, Y2, and Z2 directions are orthogonal to each other. The forward direction in the X2 direction is defined as the +X2 direction, and the backward direction in the X2 direction is defined as the -X2 direction. The rightward direction in the Y2 direction is defined as the +Y2 direction, and the leftward direction in the Y2 direction is defined as the -Y2 direction. The upward direction in the Z2 direction is defined as the +Z2 direction, and the downward direction in the Z2 direction is defined as the -Z2 direction.

[0062] (Mobile unit 51) The movable body 51 has a main body 52 formed in a substantially block shape and a projection 53 that is fitted to a guide groove 66 of the base body 61 (described later) so as to be movable in the Y2 direction. The projection 53 is provided on each of a pair of lower side surfaces of the main body 52 along the Y2 direction, and the projection 53 is formed to extend in the Y2 direction and protrude in the X2 direction.

[0063] The north pole of the first magnet 3 is positioned on the -Y2 side, and the south pole of the first magnet 3 is positioned on the +Y2 side. Therefore, the magnetic axis, which is the straight line connecting the north and south poles, is aligned along the Y2 direction.

[0064] (Base 61) In this embodiment, the base 61 is formed of a rectangular member into which a groove 62 is formed, into which the movable body 51 is inserted and positioned. The groove 62 extends in the Y2 direction and has a detachable portion 64 on the -Y2 direction side that allows the movable body 51 to be attached and detached. Guide grooves 66 extending in the Y2 direction are formed on the lower part of a pair of sides of the groove 62 along the Y2 direction. The detachable portion 64 is formed with an opening sized to allow the movable body 51 to be inserted and removed in the Z2 direction.

[0065] The second magnet 4 is embedded in the base 61 at the central position in the Y2 direction of the groove 62, along one side of the groove 62. The north pole of the second magnet 4 is positioned on the -Y2 side, and the south pole of the second magnet 4 is positioned on the +Y2 side. Therefore, the magnetic axis, which is the straight line connecting the north and south poles of the second magnet 4, is positioned along the Y2 direction. Furthermore, the second magnet 4 is positioned on the side that intersects the movement trajectory T2 of the first magnet 3, which moves with the movement of the mobile body 51 in the Y2 direction, in the Z2 direction. In this embodiment, it is positioned on the -X2 side with respect to the movement trajectory T2. Therefore, overlapping of the first magnet 3 and the second magnet 4 in the Z2 direction can be suppressed, and the thickness dimension of the locking device 50 in the Z2 direction can be reduced.

[0066] In the locking device 50, the first position P1 is the position where the first magnet 3 is positioned on the +Y2 side of the position of the second magnet 4, the second position P2 is the position where the first magnet 3 and the second magnet 4 face each other in the X2 direction, and the third position P3 is the position where the first magnet 3 is positioned on the -Y2 side of the position of the second magnet 4. At the third position P3, the opposite poles of the first magnet 3 and the second magnet 4 (the south pole of the first magnet 3 and the north pole of the second magnet 4) are in close proximity, creating an attractive force between the first magnet 3 and the second magnet 4. At the second position P2, the same poles of the first magnet 3 and the second magnet 4 (north poles together, south poles together) are in close proximity, creating a repulsive force between the first magnet 3 and the second magnet 4. At the first position P1, the opposite poles of the first magnet 3 and the second magnet 4 (the north pole of the first magnet 3 and the south pole of the second magnet 4) are in close proximity, creating an attractive force between the first magnet 3 and the second magnet 4.

[0067] Furthermore, the aforementioned attachment / detachment portion 64 is located at a position offset in the -Y2 direction from the position of the moving body when the first magnet 3 is positioned at the first position P1 and the second position P2. In this embodiment, it is located at the end of the groove portion 62 on the -Y2 direction side. The position where the attachment / detachment portion 64 is provided corresponds to the third position P3.

[0068] Here, the base 61 is configured with a guide mechanism 65 between it and the movable body 51, which guides the movable body 51 to a first position P1, a second position P2, and a third position P3 in the Y2 direction. The guide mechanism 65 is composed of a pair of guide grooves 66 of a pair of protrusions 53 and recessed grooves 62 of the movable body 51.

[0069] [Operation of the locking device] The following describes the locking and unlocking operations of the aforementioned locking device 50.

[0070] (Locking action) First, the movable body 51 is separated from the base body 61 (see "separated state" in Figure 10). Next, the separated movable body 51 is inserted into the attachment / detachment part 64 from above (see "unlocked state" in Figure 10). At this time, the first magnet 3 is positioned at the third position P3, and the south pole of the first magnet 3 is positioned close to the north pole of the second magnet 4. Since the south pole of the first magnet 3 and the north pole of the second magnet 4 are positioned close to each other at the third position P3, an attractive force is generated between the first magnet 3 and the second magnet 4, and the movable body 51 is held in place by the attachment / detachment part 64 by this attractive force. The movable body 51 is also in a state where it can be pulled out in the +Z2 direction and separated against this attractive force.

[0071] Next, the movable body 51 is moved in a straight line in the +Y2 direction by manual operation. At this time, the pair of protrusions 53 of the movable body 51 are fitted into the pair of guide grooves 66 so as to be movable in the Y2 direction, and the movable body 51 is guided in the Y2 direction by the guide mechanism 65. Furthermore, the fitting of the protrusions 53 and the guide grooves 66 ensures that the movable body 51 is connected to the base body 61 in a state where it cannot be detached in the Z2 direction. Furthermore, the first magnet 3 moves in a straight line along the movement trajectory T2 in the +Y2 direction, resisting the attractive force between it and the second magnet 4. Furthermore, if, for example, manual operation is stopped and the fingers are released from the moving body 51, the attractive force between the first magnet 3 and the second magnet 4 will cause the first magnet 3 to return to the third position P3.

[0072] Next, when the moving body 51 is moved further in a straight line in the +Y2 direction by manual operation, the south pole of the first magnet 3 is pulled away from the north pole of the second magnet 4 and moves closer to the south pole of the second magnet 4. As a result, a repulsive force is generated between the first magnet 3 and the second magnet 4, and the force resisting the magnetic movement of the moving body 51 in the +Y2 direction gradually increases until the first magnet 3 reaches the second position P2 (see "Opposite State" in Figure 10).

[0073] Next, when the first magnet 3 reaches the second position P2 due to the movement of the moving body 51 in the +Y2 direction, the north poles and south poles of the first magnet 3 and the second magnet 4 are positioned close together and facing each other in the X2 direction, resulting in a large repulsive force between the first magnet 3 and the second magnet 4 (see "facing state" shown in Figure 10). At this time, if the first magnet 3 moves slightly toward the first position P1 relative to the second magnet 4, the first magnet 3 is biased in the +Y2 direction by the repulsive force, and the moving body 51 is propelled in the +Y2 direction and moves in a straight line. Also, if the first magnet 3 moves slightly toward the third position P3 relative to the second magnet 4, the first magnet 3 is biased in the -Y2 direction by the repulsive force, and the moving body 51 is propelled in the -Y2 direction and moves in a straight line. Therefore, the moving body 51 does not remain in an intermediate state where the first magnet 3 is in the second position P2, but is always in either a locked state where the first magnet 3 is positioned in the first position P1 (see "locked state" in Figure 10) or an unlocked state where the first magnet 3 is positioned in the third position P3, ensuring that locking and unlocking operations are performed more reliably.

[0074] Next, when the moving body 51 is moved further in a straight line in the +Y2 direction by manual operation, as described above, the repulsive force generated between the first magnet 3 and the second magnet 4 biases it in the +Y2 direction, and the moving body 51 moves in a straight line with momentum in the +Y2 direction.

[0075] Next, when the moving body 51 is moved further in a straight line in the +Y2 direction, the north pole of the first magnet 3 approaches the south pole of the second magnet 4, generating an attractive force. The first magnet 3 is then pulled towards the first position P1 in the +Y2 direction by this attractive force, and the moving body 51 moves further in a straight line in the +Y2 direction.

[0076] Finally, as shown in Figure 10, when the first magnet 3 is positioned at the first position P1, the north pole of the first magnet 3 and the south pole of the second magnet 4 are in close proximity to each other. The attractive force generated between the first magnet 3 and the second magnet 4 holds the first magnet 3 at the first position P1, and the movable body 51 remains locked and connected to the base 61. In the locked state, in addition to the attractive force, movement in the Z2 direction is also restricted by the guide mechanism 65. Furthermore, even if an attempt is made to move the movable body 51 in the -Y2 direction against this attractive force, a repulsive force is generated between the first magnet 3 and the second magnet 4. Unless the movable body 51 is manually operated with a force exceeding this repulsive force, the first magnet 3 cannot move beyond the second position P2, and the locked state is maintained. In this way, the locking operation is performed by the locking device 50.

[0077] (Unlocking operation) The unlocking operation by the locking device 50 is performed by generating magnetic force in the reverse order of the locking operation described above, so a detailed explanation of this operation will be omitted.

[0078] According to the aforementioned locking device 50, in relation to the second magnet 4, the attractive force generated when the first magnet 3 is positioned at the first position P1, the repulsive force generated when the first magnet 3 is positioned at the second position P2, and the attractive force generated when the first magnet 3 is positioned at the third position P3 allow the first magnet 3 to be held in a fixed position or biased in the Y2 direction, and also allow for the setting of movement characteristics specific to the moving body 51.

[0079] Furthermore, by providing at least two magnets, the first magnet 3 and the second magnet 4, the locking and unlocking operations of the locking device 50 can be performed.

[0080] Furthermore, by setting the direction of movement of the moving body 51 to the straight-line direction (Y2 direction), the relationship between the positional changes of the first magnet 3 approaching and moving away from the second magnet 4 can be kept constant, compared to, for example, when the direction of movement is the rotational direction, making it easier to set the movement characteristics of the moving body 51.

[0081] [Third Embodiment] A third embodiment of the present invention will be described below with reference to the drawings. In Figure 11, the locking device 50B according to the third embodiment is configured in a substantially similar manner to the locking device 50 of the second embodiment, but differs from the locking device 50 in that the second magnet 4 is positioned above and below the movement trajectory T2 of the first magnet 3, which moves together with the moving body 51, in the direction of -Z2 in this embodiment. Note that the components of the locking device 50B are denoted by the same reference numerals as those of the locking device 50, and their detailed descriptions are omitted.

[0082] With the locking device 50B, the second magnet 4 can be positioned on top of the first magnet 3, which moves along the movement trajectory T2 together with the movable body 51, along the Z2 direction (thickness direction) of the base body 61, thereby reducing the dimensions in the X2 direction. Furthermore, given points can achieve effects that are substantially the same as those of the locking device 50B.

[0083] [Fourth Embodiment] A fourth embodiment of the present invention will be described below with reference to the drawings. In Figure 12, the locking device 50C according to the fourth embodiment differs from the locking device 50B of the third embodiment in that the position of the attachment / detachment part 64 is changed so that the movable body 51 is locked even when the first magnet 3 is positioned at the third position P3, just as it is when the first magnet 3 is positioned at the first position P1. Given the features, it is configured in substantially the same way as the locking device 50.

[0084] In the locking device 50C, the attachment / detachment portion 64 is provided above the second position P2, and the movable body 51 can be inserted into the groove portion 62 at a position between the first position P1 and the third position P3. In addition, a guide groove portion 66 is provided at the third position P3 along the Y2 direction, and this guide groove portion 66 constitutes part of the guide mechanism 65.

[0085] In the aforementioned locking device 50C, the movable body 51 is first inserted into the attachment / detachment section 64 in order to connect it to the base body 61. At this time, the first magnet 3 attempts to be positioned at the second position P2, so a repulsive force is generated between the first magnet 3 and the second magnet 4. In this state, when the movable body 51 is further inserted into the attachment / detachment section 64, the movable body 51 is guided by the guide mechanism 65 and moved with momentum in either the +Y2 direction or the -Y2 direction based on the repulsive force. The first magnet 3 is then positioned at the first position P1 or the third position P3, and the movable body 51 is locked. Therefore, the locked position of the movable body 51 can be used in different ways.

[0086] [Fifth Embodiment] A fifth embodiment of the present invention will be described below with reference to the drawings. In Figure 13, the locking device 50D according to the fifth embodiment is configured in a substantially similar manner to the locking device 50B of the third embodiment, but differs from the locking device 50B in that the second magnet 4 is positioned opposite the attachment / detachment part 64 in a direction perpendicular to the Y2 direction as the direction of movement, in this case the Z2 direction, and does not constitute a third position P3.

[0087] In this locking device 50D, when the movable body 51 is inserted into the attachment / detachment section 64, the first magnet 3 attempts to be positioned at the second position P2, generating a repulsive force between the first magnet 3 and the second magnet 4. Further insertion of the movable body 51 into the attachment / detachment section 64 causes the movable body 51 to move with momentum in the +Y2 direction while being guided by the guide mechanism 65. The attractive force with the second magnet 4 then holds the first magnet 3 at the first position P1, locking the movable body 51. For example, if it is not necessary to temporarily hold the position of the moving body 51 by placing the first magnet 3 at the third position P3, a locking device 50D that does not constitute the third position P3 may be configured.

[0088] [Sixth Embodiment] A sixth embodiment of the present invention will be described below with reference to the drawings. In Figure 14, the locking device 50E according to the sixth embodiment has an engaging portion 71 that is recessed in a direction intersecting the Y2 direction as the direction of movement, in this case the Z2 direction, so that the first magnet 3 approaches the second magnet 4. In addition, the end of the base 61 on the -Y2 direction side is open so that the movable body 51D can move in the -Y2 direction. The given configuration is substantially the same as that of the locking device 50B of the third embodiment.

[0089] In the locking device 50E, the movable body 51D is formed to extend in the Y2 direction, and the end 511 of the movable body 51D on the +Y2 direction side is formed to protrude in the -Z2 direction side. The surface of the end 511 on the -Y2 direction side is an engaging surface 511A that slopes toward the -Y2 direction from top to bottom. The first magnet 3 is positioned at the end 511 of the movable body 51D, and the orientation of the north pole, south pole, and magnetic axis of the first magnet 3 is the same as that of the locking device 50B in the third embodiment. The arrangement and orientation of the second magnet 4 are also the same as those of the locking device 50B in the third embodiment.

[0090] In the locking device 50E, the base body 61 is provided with the aforementioned engaging portion 71. The engaging portion 71 is positioned on the +Y2 side of the second magnet 4 and is formed to penetrate downward from the groove portion 62 of the base body 61. The side of the engaging portion 71 facing the second magnet 4 is an engaged surface 611 that slopes toward the -Y2 direction from top to bottom.

[0091] In the aforementioned locking device 50E, when the movable body 51D is moved in the +Y2 direction, and the first magnet 3 moves beyond the second position P2 towards the +Y2 direction, and the end portion 511 is positioned opposite the engaging portion 71 in the Z2 direction, the end portion 511 moves in the -Z2 direction due to the attractive force between the first magnet 3 and the second magnet 4, and the downwardly protruding portion of the end portion 511 is positioned on the engaging portion 71, and the first magnet 3 is positioned at the first position P1. At this time, the movable body 51D is locked when the engaging surface 511A engages with the engaged surface 611 due to the attractive force. In the locked state, a gap 72 is formed between the end portion 511 and the base 61 in the Y2 direction. Furthermore, the engagement between the engaging surface 511A and the engaged surface 611 is released by pushing up the end portion 511 of the movable body 51D positioned on the engaging portion 71 from below, or by placing fingers on the end portion 511 through the gap 72 and lifting it up.

[0092] This locking device 50E allows the movable body 51D to be firmly engaged with the base body 61, particularly in the Y2 direction. Furthermore, by positioning the end portion 511 in the engaging portion 71, the first magnet 3 can be positioned closer to the second magnet 4, thereby increasing the attractive force between the first magnet 3 and the second magnet 4, which are positioned at the first position P1. Moreover, since the end portion 511 enters the engaging portion 71 due to the attractive force between the first magnet 3 and the second magnet 4, the collision sound produced when the movable body 51 enters the engaging portion 71 can be used as an alert sound to indicate that the movable body 51 has been engaged with the base body 61.

[0093] Furthermore, the locking devices 50, 50B, 50C, 50D, and 50E, configured as described above, constitute a movable body holding mechanism with the movable bodies 51, 51D and the base body 61.

[0094] [Differentiation] In the lid 10 according to the first embodiment, the movable body 11 is attracted to the base body 21 by the magnetic force between the magnetic material 13 and the second magnet 4, thereby maintaining a state in which the movable body 11 and the base body 21 are combined and overlapping in the Z1 direction, but this is not limited to this. For example, as shown in the first modified example in Figure 15, at least fitting portions 81 and 82 that fit together in the Z1 direction when the lid opening 221 is closed may be formed on the movable body 11 and the base body 21, respectively. The fitting portion 81 is formed on the movable body 11, and the fitting portion 82 is formed on the base body 21. The fitting portion 81 is formed to protrude outward from the outer peripheral end of the opening / closing portion 15. The fitting portion 82 is formed to protrude inward from a position opposite to the outer peripheral end of the opening / closing portion 15 of the movable body 11 when it is in the closed state. When the fitting portions 81 and 82 are fitted together, the fitting portion 81 is positioned on the lower side, and the fitting portion 82 is positioned on the upper side, and they overlap each other in the Z1 direction. Therefore, it is possible to suppress the opening / closing part 15 from moving away from the base body 21 in the +Z1 direction when it is closed, and to maintain the closed state favorably.

[0095] In the first embodiment, the moving body 11 is configured to rotate in the R direction, but the invention is not limited to this configuration, and the moving body 11 may be configured to move in a straight line direction instead of the R direction. In the first embodiment, the second magnet 4 is positioned on the side intersecting the movement trajectory T1 in the Z1 direction. However, the configuration is not limited to this, and the position of the first magnet 3 and the arrangement of the second magnet 4 may be set so that the second magnet 4 is positioned along the Z1 direction with respect to the movement trajectory T1. In the first embodiment, the magnetic material 13 is attracted to the second magnet 4, causing the movable body 11 to be superimposed on the base body 21. However, the embodiment is not limited to this, and for example, the shaft portion 223 and the bearing portion 12 may be provided with engaging portions that engage in the Z1 direction and allow rotational movement of the movable body 11 in the R direction, and the configuration of the magnetic material 13 may be omitted. In the first embodiment, there is a closing projection 16 that is positioned on the lid opening 221 when closed. However, the embodiment is not limited to this, and the closing projection 16 may be omitted if it is possible to sufficiently suppress liquid leakage from the lid opening 221 of the beverage container 2 even without the closing projection 16. In the first embodiment, the shaft portion 223 is formed on the base body 21 and the bearing portion 12 is formed on the movable body 11, but the embodiment is not limited to this, and the shaft portion 223 may be formed on the movable body 11 and the bearing portion 12 may be formed on the base body 21. In the first embodiment, the base body 21 has a contact portion 224 that contacts the movable body 11 in the closed state and a contact portion 225 that contacts the movable body 11 in the open state. However, it is not limited to this, and for example, if it is not necessary for an audible signal to be emitted when the contact portions 224 and 225 contact the movable body, or if the movable body 11 can be sufficiently held in a certain position even if the contact portions 224 and 225 do not contact the movable body 11 in the closed and open states, the configuration of the contact portions 224 and 225 may be omitted. In the second to sixth embodiments, the movable bodies 51 and 51D are configured to move in a straight line in the Y2 direction. However, the configuration is not limited to this, and the movable bodies 51 and 51D may be configured to move in a rotational direction instead of the Y2 direction. In the first embodiment, the first magnet 3 is provided so as to be positioned at a first position P1, a second position P2, and a third position P3 when the mobile body 11 moves in the R direction. However, it is not limited to this, and for example, the first magnet 3 may be provided so as to be positioned only at the first position P1 and the second position P2 when the mobile body 11 moves in the R direction. In this case, the movable body 11 is provided with a holding portion (not shown), and the base body 21 may be provided with a holding portion such as a groove that holds the holding portion based on the repulsive force generated between the first magnet 3 and the second magnet 4 when the first magnet 3 is positioned at the second position P2. The holding portion may be composed of a member that is movable back and forth on the movable body 11, or it may be composed of a part that is fixedly formed on the movable body 11, and in either case, it is sufficient that it is held by the holding portion by the repulsive force. The locking devices 50, 50B, 50C, 50D, and 50E of the second to sixth embodiments are used as movable body holding mechanisms for the opening and closing parts of bags such as school bags, but are not limited to this and may be provided for the opening and closing parts of various products. Furthermore, a movable body holding mechanism may be constructed by omitting the attachment and detachment part 64 from the locking devices 50, 50B, 50C, 50D, and 50E, and this movable body holding mechanism may be configured to hold the movable body with movement characteristics specific to the movable body of various products.

[0096] [Summary of Embodiments] (1) The movable body holding mechanism of the above embodiment comprises movable bodies 11, 51, 51D on which a first magnet 3 is provided, and base bodies 21, 61 on which a second magnet 4 is provided, and between the movable bodies 11, 51, 51D and guide mechanisms 25, 65 that guide the movable bodies 11, 51, 51D in the R direction and Y2 direction as the direction of movement. The magnetic axes of the first magnet 3 and the second magnet 4 are arranged along the R direction and Y2 direction as the direction of movement, and the guide mechanisms 25, 65 guide the first magnet 3 to at least a first position P1 in which different poles are positioned close to the second magnet 4 in the R direction and Y2 direction as the direction of movement, and a second position P2 in which the same poles are positioned close to the second magnet 4 in the R direction and Y2 direction as the direction of movement. According to the movable body holding mechanism of the above embodiment, the magnetic axes of the first magnet 3 and the second magnet 4 are arranged along the R and Y2 directions as the directions of movement. Therefore, at the first position P1, where opposite poles are placed in close proximity, an attractive force is generated between the first magnet 3 and the second magnet 4, creating a holding force that keeps the first magnet 3 in a fixed position. At the second position P2, where the same poles are placed in close proximity, a repulsive force is generated between the first magnet 3 and the second magnet 4, creating a moving force that biases the first magnet 3 in the R and Y2 directions as the directions of movement. For this reason, at the first position P1, the movable bodies 11, 51, and 51D to which the first magnet 3 is provided can be held in a fixed position, while at the second position P2, the movement characteristics can be set by biasing the movable bodies 11, 51, and 51D with a moving force. The movable object holding mechanism can be constructed with at least two magnets, a first magnet 3 and a second magnet 4, but it may also be equipped with three or more magnets.

[0097] (2) In the movable body holding mechanism of the above embodiment, the guide mechanisms 25 and 65 are configured to guide the first magnet 3 to a third position P3 that sandwiches the second position P2 between it and the first position P1 in the R direction and Y2 direction as the direction of movement, and at the third position P3, the first magnet 3 is positioned in close proximity to the second magnet 4 with opposite poles facing each other. With this configuration, it is possible to switch between a state in which the first magnet 3 is positioned at the first position P1 and a holding force is generated, and a state in which the first magnet 3 is positioned at the third position P3 and a holding force is generated. Furthermore, the first magnet 3 located at the second position P2, which is closer to the first position P1, can be biased toward the first position P1 by repulsion, while the first magnet 3 located at the second position P2, which is closer to the third position P3, can be biased toward the third position P3 by repulsion, thus enabling the setting of unique movement characteristics.

[0098] (3) In the movable body holding mechanism of the above embodiment, the thickness directions Z1 and Z2 of the base bodies 21 and 61 are aligned in orthogonal directions perpendicular to the R and Y2 directions which are the directions of movement, and the second magnet 4 is positioned on the side that intersects the thickness directions Z1 and Z2 with respect to the movement trajectories T1 and T2 of the first magnet 3 which moves together with the movement of the movable bodies 11, 51, and 51D. With this configuration, the second magnet 4 can be positioned on the side of the base bodies 21 and 61, intersecting the Z1 and Z2 directions (which are the thickness directions) with respect to the first magnet 3, which moves along the movement trajectories T1 and T2 together with the moving bodies 11, 51, and 51D, thereby reducing the thickness dimension of the moving body holding mechanism.

[0099] (4) In the movable body holding mechanism of the above embodiment, the Z1 and Z2 directions as the thickness directions of the base bodies 21 and 61 are along orthogonal directions that are perpendicular to the R and Y2 directions as the movement directions, and the second magnet 4 is positioned above and below the movement trajectories T1 and T2 of the first magnet 3 which moves together with the movement of the movable bodies 11, 51, and 51D, along with the Z1 and Z2 directions as the thickness directions. With this configuration, the second magnet 4 can be positioned above and below the first magnet 3, which moves along the movement trajectories T1 and T2 together with the moving bodies 11, 51, and 51D, along the Z1 and Z2 directions which are the thickness directions of the base bodies 21 and 61, thereby reducing the dimensions of the moving body holding mechanism that intersect the Z1 and Z2 directions which are the thickness directions.

[0100] (5) In the movable body holding mechanism of the above embodiment, the guide mechanisms 25 and 65 guide the first magnet 3 in the Y2 direction, which is the straight-line direction of movement. With this configuration, for example, compared to the case where the direction of movement is in the R direction (rotational direction), the relationship between the positional changes of the first magnet 3 approaching and moving away from the second magnet 4 can be kept constant, making it easier to set the movement characteristics of the moving bodies 11, 51, and 51D.

[0101] (6) In the movable body holding mechanism of the above embodiment, the guide mechanisms 25 and 65 guide the first magnet 3 in the R direction, which is the rotational direction as the direction of movement. With this configuration, for example, the opposite poles of the first magnet 3 and the second magnet 4 can be placed closer together at the second position P2 than when the direction of movement is in the Y2 direction (straight direction), thereby increasing the holding force that keeps the first magnet 3 in a certain position.

[0102] (7) The lid 10 of the above embodiment is the lid 10 of a beverage container 2 on which the aforementioned movable body holding mechanism is configured, wherein the base 21 of the movable body holding mechanism has a lid opening 221, and the movable body 11 of the movable body holding mechanism is configured to move in the R direction and Y2 direction as the direction of movement so that its first magnet 3 can be positioned at least at the first position P1 and the second position P2, and the lid opening 221 is closed by the movable body 11 when the first magnet 3 is positioned at the first position P1, and is open when the lid opening 221 is opened when the lid opening 221 is moved from the first position P1 in the R direction and Y2 direction as the direction of movement. According to the lid of the present invention, the first magnet 3 can be positioned at least at the first position P1 and the second position P2 during the movement of the movable body 11, so that the aforementioned unique movement characteristics can be set, and the lid opening 221 can be closed and opened by utilizing these unique movement characteristics.

[0103] (8) In a modified version of the lid 10 of the above embodiment, the base 21 is configured to hold the movable body 11 based on the repulsive force generated between the first magnet 3 and the second magnet 4 when the first magnet 3 is positioned at the second position P2. With this configuration, for example, when the first magnet 3 is held at a position different from the first position P1, it becomes unnecessary to set a third position where an attractive force occurs between the first magnet 3 and the second magnet 4, and the amount of movement of the movable body 11 for opening and closing the lid opening 221 can be reduced.

[0104] (9) The lid 10 of the above embodiment is a movable body holding mechanism having the configuration described in (2) above, and the movable body 11 is in a closed state in which the lid opening 221 of the base body 21 is closed when the first magnet 3 is positioned at the first position P1, and is in an open state in which the lid opening 221 of the base body 21 is opened when the first magnet 3 is positioned at the third position P3. According to the lid 10 of the above embodiment, in the closed and open states, the position of the movable body 11 is maintained by the attractive force generated between the first magnet 3 and the second magnet 4, so that the closed and open states can be maintained effectively. Furthermore, when the moving body 11 moves in the R and Y2 directions, the repulsive force generated between the first magnet 3 and the second magnet 4 as the first magnet 3 passes the second position P2 can bias the moving body 11 in the R and Y2 directions, thereby setting specific movement characteristics.

[0105] (10) In the lid 10 of the above embodiment, the movable body 11 has a magnetic body 13 that is attracted to the second magnet 4 of the base body 21 by magnetic force. With this configuration, the movable body 11 can be attached to the base body 21 simply by bringing it close to the base body 21, and the movable body 11 can be removed from the base body 21 simply by moving it away from the base body 21, making it easy to attach and detach the movable body 11 and improving the maintainability of the lid body 10. In addition, since the magnetic material 13 of the movable body 11 is attracted using the second magnet 4, there is no need to provide a separate magnet for this attraction, thus simplifying the configuration.

[0106] (11) In the lid 10 of the above embodiment, the movable body 11 has a closing projection 16 that fits into the lid opening 221 when the lid opening 221 is closed and that disengages from the lid opening 221 when the movable body 11 moves. With this configuration, the magnetic force that attracts the magnetic material 13 can be used to bring the movable body 11 closer to the base, thereby tightly fitting the closing projection 16 into the lid opening 221 and improving sealing performance. Furthermore, when the closing projection 16 tries to come out of the lid opening 221 during the movement of the movable body 11, the movable body 11 can be separated from the base 21 against the magnetic force, thereby allowing the movable body 11 to move smoothly without the closing projection 16 getting excessively caught in the lid opening 221.

[0107] (12) In the lid 10 of the above embodiment, the direction of movement is the R direction as the direction of rotation, and one of the moving body 11 and the base body 21 has a shaft portion 223 that pivotally supports the moving body 11 so as to be rotatable relative to the base body 21 in the R direction as the direction of rotation, and the other of the moving body 11 and the base body 21 has a bearing portion 12 connected to the shaft portion 223. With this configuration, the bearing portion 12 is pivotally supported on the shaft portion 223, allowing the movable body 11 to rotate stably in the R direction relative to the base body 21.

[0108] (13) In the cover 10 of the above embodiment, the shaft portion 223 is composed of a disc-shaped projection, and the bearing portion 12 forms a circular hole space in which the projection is arranged. With this configuration, the circumferential surface of the protruding part can be used as a guide mechanism, eliminating the need to construct a separate guide mechanism and thus simplifying the configuration of the movable body holding mechanism.

[0109] (14) In the lid 10 of the above embodiment, the shaft portion 223 is formed on the base body 21, the bearing portion 12 is formed on the movable body 11, the movable body 11 has a magnetic body 13 that is attracted by magnetic force to the second magnet 4 of the base body 21, the magnetic body 13 is arranged opposite to the shaft portion 223 in the axial direction A of the shaft portion 223 and is attracted to the second magnet 4. With this configuration, the magnetic material 13 can be positioned opposite the shaft portion 223 to stabilize the attractive force during the movement of the movable body 11. Furthermore, since the magnetic material 13 is attracted to the second magnet 4, it is not necessary to provide a separate magnet to attract the magnetic material 13, thereby simplifying the configuration of the movable body holding mechanism.

[0110] (15) In the lid 10 of the above embodiment, the magnetic material 13 is formed in the shape of a disc, and the center of the magnetic material 13 is positioned on the axis through which the movable body 11 rotates. With this configuration, even when the moving body 11 moves in the R direction, the distance between the magnetic material 13 and the second magnet 4 can be kept constant, and the attractive force that causes the magnetic material 13 to be attracted to the second magnet 4 can be stabilized.

[0111] (16) In the lid 10 of the above embodiment, the movable body 11 and the base body 21 overlap, and the movable body 11 and the base body 21 each have fitting portions 81 and 82 that fit together in the Z1 direction, which is the direction in which the movable body 11 and the base body 21 overlap, at least in the closed state of the lid opening 221. With this configuration, the fitting portions 81 and 82 engage with each other at least when the lid opening 221 is closed, which prevents the movable body 11 from separating from the base body 21, and thus allows the closed state to be maintained effectively.

[0112] (17) In the lid 10 of the above embodiment, the base 21 has contact portions 224, 225 that contact the movable body 11 when the first magnet 3 is positioned at least one of the first position P1 and the third position P3. With this configuration, a collision sound can be generated when the moving body 11 comes into contact with the contact parts 224 and 225, and this collision sound can be used as an alert sound to indicate that the moving body 11 is being held with the first magnet 3 positioned at least one of the first position P1 and the third position P3.

[0113] (18) In the lid 10 of the above embodiment, the base 21 has an outer peripheral edge 228 on the outer peripheral side with respect to the lid opening 221, and the movable body 11 is in surface contact with the outer peripheral edge 228. With this configuration, surface contact between the outer edge 228 and the movable body 11 can further suppress liquid leakage from the lid opening 221 inside the beverage container 2.

[0114] (19) In the lid of the above embodiment, the outer peripheral edge 228 has a first surface portion 228A perpendicular to the thickness direction of the base 21 and a second surface portion 228B intersecting the first surface portion 228A, and the movable body 11 in the closed state is in surface contact with both the first surface portion 228A and the second surface portion 228B. With this configuration, liquid leakage can be suppressed even further compared to, for example, the case where the moving body 11 makes surface contact with only one of the first surface portion 228A and the second surface portion 228B.

[0115] (20) The locking devices 50, 50B, 50C, 50D, and 50E of the above embodiment are locking devices 50, 50B, 50C, 50D, and 50E that constitute the movable body holding mechanism described above, wherein the base body 61 is provided at a position that is offset in the R direction and Y2 direction as the direction of movement from the position of the movable bodies 51 and 51D when the first magnet 3 is positioned at the first position P1, and has an attachment / detachment part 64 that allows the movable bodies 51 and 51D to be attached and detached. According to the locking devices 50, 50B, 50C, 50D, and 50E of the above embodiment, for example, the movable body holding mechanism can be used as a locking device provided on the opening and closing parts of bags such as school bags and various products, and specific movement characteristics can be set for the movable bodies 51 and 51D.

[0116] (21) In the locking devices 50, 50B, 50C, 50D, and 50E of the above embodiment, the movable body holding mechanism is a movable body holding mechanism having the configuration described in (2) above, and the base body 61 is configured to hold the movable bodies 51 and 51D when the first magnet 3 is positioned at the first position P1 and when it is positioned at the third position P3. With this configuration, the position for locking the mobile body 51 can be selected from the first position P1 side and the third position P3 side.

[0117] (22) In the locking devices 50, 50B, 50C, 50D, and 50E of the above embodiments, the base body 61 has an engagement portion 71 which is recessed in a direction that intersects the R direction and Y2 direction as the direction of movement, so that the first magnet 3 approaches the second magnet 4, and the first magnet 3 is positioned in the engagement portion 71 at the first position P1. With this configuration, the movable bodies 51 and 51D are positioned on the engagement portion 71, allowing them to be firmly engaged with the base 61 in the R and Y2 directions of movement. Furthermore, since the movable bodies 51 and 51D enter the engagement portion 71 due to the attractive force between the first magnet 3 and the second magnet 4, the collision sound produced when the movable bodies 51 and 51D enter the engagement portion 71 can be used as an alert sound to indicate that the movable bodies 51 and 51D have been engaged. [Explanation of symbols]

[0118] 10...Lid body, 11...Movable body, 12...Bearing part, 121...Convex part, 122...Inner peripheral surface, 13...Magnetic body, 15...Opening / closing part, 151A...First contact surface part, 151B...Second contact surface part, 16...Closing convex part, 2...Beverage container, 21...Base body, 22...Lid body part, 221...Lid opening, 222...Vent hole , 223...Shaft part, 223A...Outer circumferential surface, 224...Abutting part, 225...Abutting part, 226...Concave part, 226A...Closing body, 227...Outer circumferential protrusion, 228...Outer circumferential edge, 228A...First surface part, 228B...Second surface part, 23...Lid attachment part, 231...Body, 231A...Outer circumferential surface, 232...Mounting Rib, 24... Lid edge, 25... Guide mechanism, 3... First magnet, 4... Second magnet, 50... Locking device, 50B... Locking device, 50C... Locking device, 50D... Locking device, 50E... Locking device, 51... Moving body, 511... End, 511A... Engaging surface, 51D... Moving body, 52... Main body, 53... Protrusion, 61... Base, 611... Engaged surface, 62... Groove, 64... Attachment / detachment part, 65... Guide mechanism, 66... ​​Guide groove, 71... Engaging part, 72... Gap, 81... Fitting part, 82... Fitting part, P1... First position, P2... Second position, P3... Third position, T1... Movement trajectory, T2... Movement trajectory.

Claims

1. The device comprises a movable body (11, 51, 51D) on which a first magnet (3) is provided, and a base body (21, 61) on which a second magnet (4) is provided, and which is configured between the movable body (11, 51, 51D) and a guide mechanism (25, 65) that guides the movable body (11, 51, 51D) in the direction of movement (R direction, Y2 direction). The magnetic axes of the first magnet (3) and the second magnet (4) are arranged along the direction of movement (R direction, Y2 direction), The guide mechanism (25, 65) guides the first magnet (3) to at least a first position (P1) in which opposite poles are positioned close to the second magnet (4) in the direction of movement (R direction, Y2 direction), and a second position (P2) in which the same poles are positioned close to the second magnet (4) in the direction of movement (R direction, Y2 direction). Mobile object holding mechanism.

2. The guide mechanism (25, 65) is configured to guide the first magnet (3) to a third position (P3) that sandwiches the second position (P2) between the first position (P1) and the third position (P3) in the direction of movement (R direction, Y2 direction). At the third position (P3), the first magnet (3) is positioned so that its opposite poles are in close proximity to the second magnet (4). The movable body holding mechanism according to claim 1.

3. The thickness direction (Z1 direction, Z2 direction) of the substrate (21, 61) is along an orthogonal direction perpendicular to the movement direction (R direction, Y2 direction), The second magnet (4) is positioned laterally, intersecting the movement trajectory (T1, T2) of the first magnet (3), which moves together with the movement of the moving body (11, 51, 51D), in the thickness direction (Z1 direction, Z2 direction). The movable body holding mechanism according to claim 1.

4. The thickness direction (Z1 direction, Z2 direction) of the substrate (21, 61) is along an orthogonal direction perpendicular to the movement direction (R direction, Y2 direction), The second magnet (4) is positioned above and below the movement trajectory (T1, T2) of the first magnet (3), which moves together with the movement of the moving body (11, 51, 51D), along the thickness direction (Z1 direction, Z2 direction). The movable body holding mechanism according to claim 1.

5. The guide mechanism (25, 65) guides the first magnet (3) in the straight-line direction (Y2 direction) as the direction of movement. The movable body holding mechanism according to claim 1.

6. The guide mechanism (25, 65) guides the first magnet (3) in the rotational direction (R direction) as the direction of movement. The movable body holding mechanism according to claim 1.

7. A lid (10) of a beverage container (2) comprising a movable body holding mechanism according to any one of claims 1 to 6, The base (21) of the movable body holding mechanism has a lid opening (221), The movable body (11) of the movable body holding mechanism is configured to move in the direction of movement (R direction, Y2 direction) so that its first magnet (3) can be positioned at least at the first position (P1) and the second position (P2). The lid opening (221) is closed by the moving body (11) when the first magnet (3) is positioned at the first position (P1), while the opening is opened when the moving body (11) releases the closure when the first magnet (3) moves from the first position (P1) in the direction of movement (R direction, Y2 direction). Cover.

8. The base (21) is configured to hold the moving body (11) based on the repulsive force generated between the first magnet (3) and the second magnet (4) when the first magnet (3) is positioned at the second position (P2). The lid according to claim 7.

9. The aforementioned movable body holding mechanism is a movable body holding mechanism having the configuration described in claim 2, The movable body (11) is in a closed state in which the lid opening (221) of the base body (21) is closed when the first magnet (3) is positioned at the first position (P1), while in an open state in which the lid opening (221) of the base body (21) is opened when the first magnet (3) is positioned at the third position (P3). The lid according to claim 7.

10. The moving body (11) has a magnetic material (13) that is attracted to the second magnet (4) of the base body (21) by magnetic force. The lid according to claim 7.

11. The movable body (11) has a closing projection (16) that fits into the lid opening (221) when the lid opening (221) is closed, and that detaches from the lid opening (221) when the movable body (11) moves. The lid according to claim 10.

12. The aforementioned direction of movement is the rotational direction (R direction), One of the moving body (11) and the base body (21) has a shaft portion (223) that pivotally supports the moving body (11) so that it can rotate in the rotational direction (R direction) relative to the base body (21), The other of the moving body (11) and the base body (21) has a bearing portion (12) connected to the shaft portion (223). The lid according to claim 7.

13. The shaft portion (223) is composed of a disc-shaped projection, The bearing portion (12) forms a circular hole space in which the protruding portion is arranged. The lid according to claim 12.

14. The shaft portion (223) is formed on the base body (21), The bearing portion (12) is formed on the moving body (11), The moving body (11) has a magnetic material (13) that is attracted by magnetic force to the second magnet (4) of the base body (21), The magnetic material (13) is positioned opposite the shaft portion (223) in the axial direction (A) of the shaft portion (223) and is attracted to the second magnet (4). The lid according to claim 13.

15. The magnetic material (13) is formed in the shape of a disc, The center of the magnetic material (13) is positioned on the axis through which the moving body (11) rotates. The lid according to claim 14.

16. The moving body (11) and the base body (21) are overlapping, The movable body (11) and the base body (21) each have fitting portions (81, 82) that fit together in a direction (Z1 direction) in which the movable body (11) and the base body (21) overlap, at least when the lid opening (221) is closed. The lid according to claim 7.

17. The base (21) has contact portions (224, 225) that contact the moving body (11) when the first magnet (3) is positioned at least one of the first position (P1) and the third position (P3). The lid according to claim 9.

18. The base (21) has an outer peripheral edge (228) on the outer side of the lid opening (221), The moving body (11) is in surface contact with the outer peripheral edge (228). The lid according to claim 7.

19. The outer peripheral edge (228) has a first surface (228A) perpendicular to the thickness direction of the base (21) and a second surface (228B) intersecting the first surface (228A). The moving body (11), which is in a closed state, is in surface contact with both the first surface portion (228A) and the second surface portion (228B). The lid according to claim 18.

20. A locking device (50, 50B, 50C, 50D, 50E) comprising a movable body holding mechanism according to any one of claims 1 to 6, The base (61) is provided at a position away from the position of the moving body (51, 51D) when the first magnet (3) is positioned at the first position (P1) in the direction of movement (R direction, Y2 direction), and has a detachable part (64) that allows the moving body (51, 51D) to be attached to and detached. Locking device.

21. The aforementioned movable body holding mechanism is a movable body holding mechanism having the configuration described in claim 2, The base (61) is configured to hold the movable body (11, 51, 51D) when the first magnet (3) is positioned at the first position (P1) and when it is positioned at the third position (P3). The locking device according to claim 20.

22. The base (61) has an engagement portion (71) that is recessed in a direction intersecting the direction of movement (R direction, Y2 direction) so that the first magnet (3) approaches the second magnet (4), and the first magnet (3) is positioned in the engagement portion (71) at the first position (P1). The locking device according to claim 20.

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