Lid body

Abstract

To provide a childproof function and improve stacking performance.SOLUTION: A lid body 1 includes a frame 20 to be combined with a container body 2, and a lid body 40 that closes in an openable manner an opening 21 of the frame body. A lid peripheral wall 24 of the lid body is provided with an operating piece 50 that is positioned inside the frame peripheral wall 24 of the frame body and has an upper end that engages with the frame peripheral wall from the inside, and a lid flange 41 of the lid body is provided with a protective wall 60 that covers the operating piece from the outside and protrudes downward beyond the operating piece. The operating piece can be displaced by pulling operation from an engaging position P3 where it is engaged with the frame peripheral wall to an unlocking position where it is released and can get over the frame peripheral wall from below. A first through-hole 70 is formed at the connection between the lid flange and the protective wall, vertically penetrating a region that overlaps with the operating piece when viewed from above, and a second through-hole 71 that opens upward through the first through-hole and penetrates the lid peripheral wall is formed at the lid peripheral wall.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a lid. [Background technology]

[0002] For example, the box-shaped container described in Patent Document 1 below is provided with a lid having a childproof function. This box-shaped container comprises a cylindrical container body with a bottom for accommodating contents, a frame body combined with the container body, and a lid body connected to the frame body via a hinge and covering the opening of the frame body in an openable and closable manner. The frame body is formed so as to curve downward as it extends inward from the inner peripheral wall of the frame, and has a leaf spring portion with a first locking protrusion formed at its lower end. The lid body has a second locking protrusion formed at the lower end of the peripheral wall of the lid, and locks onto the first locking protrusion from below.

[0003] When the lid body is in the closed position, closing the opening of the frame body, the first and second locking protrusions engage to restrict opening (unsealing) of the lid body. To open the lid body, the knob of the lid body is slid by pressing the lid peripheral wall against the biasing force of the leaf spring, and then the knob is lifted upward. During the process of lifting the lid body, the engagement between the first and second locking protrusions can be released. This allows the lid body to rotate around the hinge, opening the opening of the frame body. In this way, in order to open the lid body, multiple operations must be performed in a series of steps, so the lid body is provided with a childproof function that prevents people who are not permitted to open box-shaped containers, such as young children, from easily opening the lid body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-131257 Summary of the Invention [Problem to be solved by the invention]

[0005] It is desirable to store lids, each of which has a frame and a lid body, in a stacked state, which allows for compact storage of multiple lids and also reduces transportation costs (shipping costs) during shipping. In this regard, the conventional lids described above have room for improvement in their stacking performance, allowing them to be stacked efficiently in multiple layers. In particular, because the leaf springs are formed on the frame, when the lids are stacked vertically in multiple layers, the leaf springs of the lids arranged in the upper layers interfere with the lids arranged in the lower layers. This makes it difficult to stack multiple lids efficiently in multiple layers.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lid body that has a childproof function and improved stacking performance. [Means for solving the problem]

[0007] (1) The lid body according to the present invention comprises a frame body that is combined with the upper end of a bottomed cylindrical container body that accommodates contents, and a lid body that is connected to the frame body via a hinge and that releasably closes the opening of the frame body, the frame body having a peripheral frame wall portion that surrounds the container body from the outside in the radial direction, the lid body having a lid flange portion placed on the frame body from above, and a lid peripheral wall portion that extends downward from the lid flange portion and surrounds the peripheral frame wall portion from the outside in the radial direction, the lid peripheral wall portion having a lower end that protrudes downward more than the lid peripheral wall portion and is positioned radially inward more than the peripheral frame wall portion, and the upper end of the lid peripheral wall portion is engaged with the lower end of the peripheral frame wall portion from the inside in the radial direction. An operating piece is provided, and the lid flange portion is provided with a protective wall portion that covers the operating piece from the radial outside and protrudes downward below the operating piece, and the operating piece can be displaced from an engaged position in which it is engaged with the frame peripheral wall portion to an unlocked position where it can overcome the frame peripheral wall portion from below by a pulling operation toward the protective wall portion, and a first through hole is formed at the connection portion between the lid flange portion and the protective wall portion, penetrating vertically through an area that overlaps the operating piece when viewed from above, and a second through hole is formed in the lid peripheral wall portion, opening upward through the first through hole and penetrating the lid peripheral wall portion in the radial direction.

[0008] With the lid body according to the present invention, when the lid body closes the opening of the frame body, the upper end of the operating lever engages with the lower end of the peripheral frame wall from the inside in the radial direction, thereby restricting rotation of the lid body even when an attempt is made to simply rotate the lid body around the hinge relative to the frame body. To open the lid body, a finger or other object is hooked onto the operating lever and pulled toward the protective wall while the lid body is pulled up to rotate around the hinge. During this process, the operating lever is released from its engagement with the peripheral frame wall by the pulling operation, and displaced from the engaged position to the released position. Therefore, as the lid body is pulled up, the operating lever can be moved to overcome the peripheral frame wall from below, allowing the entire lid body to be opened. This allows the opening of the frame body to be opened, allowing the contents contained in the container body to be removed, for example.

[0009] In this way, when opening the lid body, it is necessary to perform the retraction operation of the operating piece and the lifting operation around the hinge of the lid body in a single sequence, thereby reducing the possibility that a non-target person, such as a small child, will unintentionally open the lid body and open the opening of the frame body. Moreover, since the operating piece is covered from the radial outside by the protective wall portion, it is hidden inside the protective wall portion. This further reduces the possibility of a non-target person opening the lid body. Therefore, a childproof function can be provided.

[0010] Furthermore, when the lids are stacked vertically in multiple tiers for storage, etc., the operating lever of the lid placed on the upper tier protrudes downward from the lid peripheral wall, which may interfere with the lid placed on the lower tier. In this regard, since the lid main body is formed with the first through hole and the second through hole, the lids can be stacked vertically in multiple tiers with the operating lever of the lid placed on the upper tier accommodated in the first through hole and the second through hole of the lid placed on the lower tier. Therefore, multiple lids can be stacked vertically efficiently without worrying about interference from the operating lever, improving stacking performance. In particular, lids stacked in multiple layers can be stored compactly, which can reduce storage space and transportation costs at the time of shipping, for example.

[0011] (2) The operation piece and the protective wall portion may be formed so as to be located on opposite sides of the hinge in the radial direction.

[0012] In this case, when the operating piece is pulled toward the protective wall, the lid body can be operated around the hinge continuously within the same movement. Therefore, the operation of pulling in the operating piece and the operation of lifting the lid body around the hinge can be performed smoothly and continuously, improving the operability of the lid body.

[0013] (3) The frame peripheral wall portion is provided with a regulating wall portion that protrudes radially outward and extends downward, and the operating piece is connected to the lid peripheral wall portion so as to be elastically displaceable in the radial direction, and the upper end portion may be engaged with the lower end portion of the regulating wall portion from the radially inner side.

[0014] In this case, the operating lever is engaged with the restricting wall portion that protrudes radially outward from the peripheral wall portion of the frame, which makes it easier to engage the operating lever more reliably and more effectively demonstrate the childproof function. Furthermore, when the operating lever is retracted, it can be elastically displaced, making it easier to smoothly move from the engaged position to the released position. This further improves the operability of the lid body. [Effects of the Invention]

[0015] According to the present invention, a lid body can be provided that is childproof and has improved stacking performance. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a plan view showing an embodiment of a box-shaped container having a lid body according to the present invention, showing a state in which the lid body is in an open position. FIG. [Figure 2] 2 is a vertical cross-sectional view of the box-shaped container taken along line AA in FIG. 1, showing a state in which the lid body is in a closed position. FIG. [Figure 3]3 is a front view showing the periphery of the operation piece as seen from the direction of arrow B shown in FIG. 2. FIG. [Figure 4] 3 is a cross-sectional view of the cover taken along line CC shown in FIG. 2. FIG. [Figure 5] FIG. 3 is a perspective view of the periphery of the operation piece shown in FIG. 2. [Figure 6] FIG. 3 is a perspective view of the periphery of the operation piece shown in FIG. 2. [Figure 7] FIG. 10 is a vertical cross-sectional view of the box-shaped container showing a state in which the lid body is being closed. [Figure 8] 3 is a vertical cross-sectional view showing a state in which the lid bodies shown in FIG. 2 are stacked in multiple stages in the vertical direction. DETAILED DESCRIPTION OF THE INVENTION

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the lid according to the present invention will be described with reference to the drawings. 1 and 2, the lid 1 of this embodiment is used by being combined with a container body 2 (not shown) that accommodates contents. The lid 1 and the container body 2 form a box-shaped container 3. The container body 2 is not shown in FIG. 1.

[0018] (Container body) As shown in Figure 2, the container body 2 is formed in a bottomed cylindrical shape having a body portion 10, a bottom portion connected to the lower end of the body portion 10, and a container flange portion 11 formed at the upper end of the body portion 10. In this embodiment, the central axis of the container body 2 is defined as the container axis O. Furthermore, the direction from the bottom toward the opening of the container body 2 along the container axis O is defined as the upward direction, and the opposite direction is defined as the downward direction. Furthermore, the direction intersecting the container axis O in a plan view from the direction of the container axis O is defined as the radial direction, and the direction circumferential around the container axis O is defined as the circumferential direction. Furthermore, in a plan view from the direction of the container axis O, two directions that are perpendicular to each other are defined as the front-to-back direction L1 and the left-to-right direction L2. Furthermore, in a plan view from the direction of the container axis O, the side of the hinge 4 described below is defined as the rear, and the opposite direction is defined as the front.

[0019] The body 10 is formed in a rectangular shape in a plan view that is longer in the left-right direction L2 than in the front-rear direction L1. However, the shape of the body 10 is not limited to this and may be changed as appropriate. For example, the body 10 may be formed in a square, elliptical, circular, or other shape in a plan view. The container flange portion 11 is formed so as to protrude radially outward from the upper end of the body portion 10 and extend continuously in the circumferential direction around the entire circumference of the body portion 10 .

[0020] (lid) As shown in Figures 1 and 2, the lid body 1 comprises a frame body 20 that is combined with the container flange portion 11 of the container body 2, and a lid body 40 that is connected to the frame body 20 via a hinge 4 and that releasably closes the opening 21 of the frame body 20. 1 shows a state in which the lid body 40 is in the open position P1, and the opening 21 of the frame body 20 is open. FIG. 2 shows a state in which the lid body 40 is in the closed position P2, and the opening 21 of the frame body 20 is closed.

[0021] (Frame) 1 and 2, the frame body 20 is fixed to the upper end of the body 10 by being combined with the container flange 11. The frame body 20 includes an annular frame flange 22 disposed above the container flange 11, a frame inner peripheral wall 23 that protrudes downward from the inner peripheral edge of the frame flange 22 and is formed so as to extend continuously in the circumferential direction around the entire circumference of the frame flange 22, and a frame outer peripheral wall 24 (frame peripheral wall according to the present invention) that protrudes downward from the outer peripheral edge of the frame flange 22 and is formed so as to extend continuously in the circumferential direction around the entire circumference of the frame flange 22.

[0022] The frame flange portion 22 is formed in a rectangular frame shape that is longer in the left-right direction L2 than in the front-rear direction L1 in a plan view, corresponding to the shape of the container flange portion 11. The frame flange portion 22 is placed on the container flange portion 11 over the entire periphery thereof. Of the frame flange portion 22, the front flange portion 22a located at the front and the rear flange portion 22b located at the rear are each formed with a die-cutting opening 25 for use in molding the fixing claw portion 27, which will be described later. The die-cutting openings 25 are formed so as to penetrate the frame flange portion 22 in the up-down direction, and a plurality of die-cutting openings 25 are formed at intervals in the left-right direction L2.

[0023] The frame inner peripheral wall 23 surrounds the barrel 10 and container flange 11 of the container body 2 from the radially inside. The frame inner peripheral wall 23 is formed with vertical ribs 26 that protrude radially inward and extend vertically. A plurality of vertical ribs 26 are formed at intervals around the entire circumference of the frame inner peripheral wall 23 and are in contact with the inner peripheral edge of the container flange 11. As a result, the entire frame body 20 is positioned relative to the container body 2 in the front-rear direction L1 and the left-right direction L2, and is assembled coaxially with the container axis O. An opening portion located inside the frame inner peripheral wall portion 23 serves as an opening portion 21 of the frame body 20.

[0024] The frame outer peripheral wall portion 24 radially surrounds the barrel portion 10 and container flange portion 11 of the container body 2. A plurality of fixing claws 27 protruding rearward are formed at intervals in the left-right direction L2 at the lower end of the front wall portion 24a located at the front of the frame outer peripheral wall portion 24. Similarly, a plurality of fixing claws 27 protruding forward are formed at intervals in the left-right direction L2 at the lower end of the rear wall portion 24b located at the rear of the frame outer peripheral wall portion 24. These fixing claws 27 are positioned so as to overlap the die-cut opening 25 in a plan view, and can be locked from below to the container flange 11. This allows the entire frame 20 to be combined with the container body 2 in a state where it is prevented from coming off upward.

[0025] 2 to 6, a notch 28 that penetrates the front wall 24a in the radial direction (front-rear direction L1) is formed in the center in the left-right direction L2 of the front wall 24a of the frame outer peripheral wall 24. The notch 28 is formed to have a constant length along the left-right direction L2 in a front view seen from the front, and is formed to open downward. Furthermore, a restricting wall portion 30 that protrudes forward and extends downward is formed on the front wall portion 24a of the frame outer peripheral wall portion 24. The restricting wall portion 30 is formed so as to be positioned inside the cutout portion 28 in a front view seen from the front.

[0026] The regulating wall portion 30 comprises a regulating top wall 31 protruding forward from the upper opening edge of the cutout portion 28, a regulating front wall 32 extending downward from the regulating top wall 31, and a pair of regulating side walls 33 formed integrally on both sides of the regulating top wall 31 and the regulating front wall 32 in the left-right direction L2 and facing each other in the left-right direction L2. The top restriction wall 31 and the front restriction wall 32 are formed to be continuously and smoothly connected. As a result, the outer surface of the connecting portion between the top restriction wall 31 and the front restriction wall 32 is a smoothly curved surface. This curved surface functions as a guide surface 34. The front restriction wall 32 is formed to have a length such that it does not protrude downward from the front wall portion 24a.

[0027] (lid body) As shown in Figures 1 and 2, the lid main body 40 comprises an annular lid flange portion 41 arranged above the frame flange portion 22, a lid inner wall portion 42 that protrudes downward from the inner peripheral edge of the lid flange portion 41 and is formed so as to extend continuously in the circumferential direction around the entire circumference of the lid flange portion 41, a lid outer wall portion (lid peripheral wall portion according to the present invention) 43 that protrudes downward from the outer peripheral edge of the lid flange portion 41 and is formed so as to extend continuously in the circumferential direction around the entire circumference of the lid flange portion 41, and a lid top wall portion 44 that is connected to the lower end of the lid inner wall portion 42 and closes the lower end opening of the lid inner wall portion 42.

[0028] The lid body 40 is disposed coaxially with the container axis O, and the lid flange portion 41 is connected to the rear flange portion 22b of the frame body 20 via the hinge 4. This allows the lid body 40 to be opened and closed in the front-to-rear direction L1 by rotating about the hinge 4, and displaces between a closed position P2 (see FIG. 2) where the opening 21 of the frame body 20 is closed, and an open position P1 (see FIG. 1) where the opening 21 of the frame body 20 is open.

[0029] The lid flange portion 41 is formed in a rectangular frame shape that is longer in the left-right direction L2 than in the front-rear direction L1 in a plan view, corresponding to the shape of the frame flange portion 22. The lid flange portion 41 is placed on the frame flange portion 22 around the entire periphery thereof. A downwardly protruding abutment rib 45 is formed on the front flange portion 41a located at the front of the lid flange portion 41. The abutment rib 45 is H-shaped in a plan view, and abuts against the upper surface of the frame flange portion 22 when the lid main body 40 is in the closed position P2. This brings the lid flange portion 41 into contact with the frame flange portion 22 via the abutment rib 45. Two abutment ribs 45 are provided on the front flange portion 41a, spaced apart in the left-right direction L2.

[0030] Similarly, contact ribs 45 are formed on both sides in the left-right direction L2 of the lid flange portion 41. The shape and the position of the contact ribs 45 may be changed as appropriate.

[0031] The lid inner peripheral wall portion 42 surrounds the frame inner peripheral wall portion 23 from the radially inside, with a gap between the lid inner peripheral wall portion 42 and the frame inner peripheral wall portion 23. The lid inner peripheral wall portion 42 is formed to extend downwardly beyond the frame inner peripheral wall portion 23 and enters the container body 2.

[0032] The lid top wall 44 includes an upright wall 44a that rises upward from the lower end of the lid inner peripheral wall 42, and a flat closing wall 44b that is connected to the upper end of the upright wall 44a. The upright wall 44a is inclined so as to extend radially inward as it extends upward from the lower end of the lid inner peripheral wall 42. The closing wall 44b is formed in a rectangular shape in plan view that is longer in the left-right direction L2 than in the front-to-rear direction L1. As a result, the lid top wall 44 covers the opening 21 of the frame 20 from above.

[0033] The lid outer peripheral wall portion 43 surrounds the frame outer peripheral wall portion 24 from the outside in the radial direction, with a gap between the lid outer peripheral wall portion 43 and the frame outer peripheral wall portion 24. As shown in FIGS. 2 to 6, a front wall portion 43a located at the front of the cover outer peripheral wall portion 43 is formed with an operation piece 50 that protrudes downward from the front wall portion 43a. The operating piece 50 is disposed in the center of the front wall portion 43a in the left-right direction L2. As a result, the operating piece 50 is disposed on the radially opposite side of the hinge 4 across the container axis O. The outer shape of the operating piece 50 is determined in relation to a second through-hole 71, which will be described later, and is formed in a rectangular shape that is longer in the left-right direction L2 than in the up-down direction when viewed from the front. The operating piece 50 is disposed rearward (radially inward) of the restricting front wall 32 of the restricting wall portion 30 formed on the frame outer peripheral wall portion 24, and its upper end portion engages with the lower end portion of the restricting front wall 32 from behind.

[0034] The operation piece 50 is formed to be longer in the left-right direction L2 than the restriction wall portion 30 in a front view. As a result, side end portions of the operation piece 50 located on both sides in the left-right direction L2 are disposed outward in the left-right direction L2 than the restriction wall portion 30. The side end portions of the operation piece 50 are each connected to the front wall portion 43a of the lid outer peripheral wall portion 43 via elastic connecting portions 51. As a result, the operation piece 50 is connected so as to be elastically displaceable in the front-rear direction L1 (radial direction) with the elastic connecting portions 51 as base points.

[0035] In particular, the elastic connecting portion 51 is disposed on the upper end side of the side end of the operating piece 50. Therefore, the operating piece 50 is elastically displaceable so that the lower end portion thereof rotates significantly in the front-to-rear direction L1, with the elastic connecting portion 51 as a base point. The operating piece 50 is elastically displaced by a pulling operation toward the front (toward the protective wall portion 60), so that the operating piece 50 can be displaced from an engaging position P3 where it is engaged with the restricting front wall 32 to a releasing position P4 (see FIG. 6) where it is released from the engaging state and can climb over the restricting front wall 32 from below.

[0036] Corresponding to the above-mentioned operation piece 50, the cover flange portion 41 is formed with a protective wall portion 60 that protrudes forward and then curves downward. The protective wall portion 60 is formed so as to be located in front of the restriction wall portion 30 and the operating piece 50. As a result, the protective wall portion 60 is disposed on the radially opposite side of the hinge 4 with the container axis O in between. The protective wall portion 60 is formed so as to be longer in the left-right direction L2 than the restriction wall portion 30 and the operating piece 50 in a front view seen from the front, and is formed so as to protrude downward further than the operating piece 50. Therefore, the protective wall portion 60 is formed so as to cover the restriction wall portion 30 and the operating piece 50 from the front. In particular, the protective wall portion 60 protrudes downward from the operating lever 50, making it difficult to see the operating lever 50 from the outside, and thus plays a role in hiding the operating lever 50 inside.

[0037] The protective wall portion 60 includes a protective front wall 61 disposed in front of the restricting wall portion 30 and the operating piece 50, and a pair of protective side walls 62 formed integrally on both sides of the protective front wall 61 in the left-right direction L2 and facing each other in the left-right direction L2. The pair of protective side walls 62 connect the lid outer peripheral wall portion 43 and the protective front wall 61.

[0038] (First through hole, second through hole) As shown in Figures 2, 3, 5 and 6, in the lid body 1 configured as described above, a first through hole 70 is formed in the lid flange portion 41, and a second through hole 71 is formed in the front wall portion 43a of the lid outer wall portion 43.

[0039] The first through-hole 70 is formed so as to vertically penetrate the connection portion between the lid flange portion 41 and the protective wall portion 60. The first through-hole 70 is formed in a region that overlaps with the operation piece 50 when viewed from above. Specifically, the first through-hole 70 is formed in the shape of a horizontally elongated slit that is longer in the left-right direction L2 than the operation piece 50 when viewed from above.

[0040] The second through hole 71 is formed to penetrate the front wall portion 43a of the lid outer peripheral wall portion 43 in the front-rear direction L1, and is formed to open upward through the first through hole 70. In a front view seen from the front, the second through hole 71 has the same length in the left-right direction L2 as the first through hole 70, and is formed to be longer in the left-right direction L2 than the restricting wall portion 30. Note that the restricting wall portion 30 protrudes forward through the second through hole 71. The operating piece 50 has an outer shape formed using this second through hole 71. In particular, a pair of step surfaces 72 (see FIG. 3) facing upward are formed on a part of the inner wall surface that defines the second through-hole 71 and are spaced apart in the left-right direction L2.

[0041] (Action of box-shaped container) Next, a method of using the box-shaped container 3 having the lid body 1 configured as described above will be described. 2, 5, and 6, when the lid body 40 is in the closed position P2 closing the opening 21 of the frame body 20, the upper end of the operating piece 50 engages with the front restriction wall 32 of the restriction wall portion 30 from behind. This makes it possible to restrict the rotation of the lid body 40 even if an attempt is made to simply rotate the lid body 40 around the hinge 4 relative to the frame body 20.

[0042] When opening the lid main body 40, for example, a fingertip is inserted from below the protective wall 60 to behind the lower end of the operating piece 50, as shown in FIG. 2. Then, the fingertip is hooked on the lower end of the operating piece 50 and pulled forward (toward the protective wall 60), while the entire lid main body 40 is pulled up so as to rotate around the hinge 4. During this process, the pulling operation causes the operating piece 50 to be elastically displaced so that the lower end rotates significantly forward, with the elastic connecting portion 51 as the base point. This allows the operating piece 50 to be displaced from an engaging position P3 where it is engaged with the front restricting wall 32 to an unlocked position P4 where it is unlocked and can climb over the front restricting wall 32 from below, as shown in FIG.

[0043] Therefore, as the lid body 40 is pulled up, the operating piece 50 can be moved forward so as to climb over the front restricting wall 32 from below, and the entire lid body 40 can be opened. This allows the lid body 40 to be positioned in the open position P1 shown in Figure 1, and the opening 21 of the frame body 20 to be opened. As a result, the contents contained in the container body 2 can be taken out, for example, through the opening 21 of the frame body 20.

[0044] As described above, when opening the lid body 40, it is necessary to perform a series of operations, namely, pulling in the operating piece 50 and pulling up the lid body 40 around the hinge 4, thereby reducing the possibility that a non-target person, such as an infant, will unintentionally open the lid body 40 and open the opening 21 of the frame body 20. Moreover, the operating piece 50 is covered from the front by the protective wall 60, and is therefore hidden inside the protective wall 60. This further reduces the possibility of an unauthorized person opening the lid body 40. Therefore, a childproof function can be provided.

[0045] When closing the lid body 40 after removing the contents from the container body 2, the lid body 40 is rotated forward around the hinge 4. During this process, the lower end of the operating piece 50 can be brought into contact with the restriction wall portion 30 from above, as shown in FIG. 7. At this time, the connecting portion between the restriction top wall 31 and the restriction front wall 32 forms a curved guide surface 34. Therefore, as the lid body 40 is further closed, the operating piece 50 can be elastically displaced so that the lower end of the operating piece 50 faces forward while being guided downward so as to slide on the guide surface 34.

[0046] Then, when the upper end of the operating piece 50 is positioned below the lower end of the restricting front wall 32 by further closing the lid body 40, the elastic restoring displacement of the operating piece 50 causes the upper end of the operating piece 50 to move rearward from the restricting front wall 32 while climbing over the restricting front wall 32. This allows the upper end of the operating piece 50 to be locked from behind the lower end of the restricting front wall 32, and rotation of the lid body 40 around the hinge 4 relative to the frame 20 can be restricted again.

[0047] Furthermore, according to the lid body 1 of this embodiment, when multiple lid bodies 1 are stacked vertically in multiple layers for storage, etc., the operating piece 50 of the lid body 1 placed on the upper layer protrudes downward beyond the lid outer wall portion 43, and therefore may interfere with the lid body 1 placed on the lower layer. In this regard, since the first through hole 70 and the second through hole 71 are formed in the lid body 40, when multiple lid bodies 1 are stacked vertically as shown in Figure 8, the operating piece 50 of the lid body 1 located on the upper level can be stacked while being accommodated within the first through hole 70 and the second through hole 71 of the lid body 1 located on the lower level.

[0048] Therefore, multiple lid bodies 1 can be stacked up and down efficiently without having to worry about interference from the operating piece 50, improving stacking performance. In particular, lid bodies 1 stacked in multiple layers can be stored compactly, which can reduce, for example, storage space and transportation costs at the time of shipping. Moreover, when the operation piece 50 is housed in the first through-hole 70 and the second through-hole 71, the lower end of the operation piece 50 can be brought into contact with the pair of step surfaces 72 (see FIG. 3) from above. This makes it possible to stabilize the position of the operation piece 50, and therefore the lid bodies 1 can be stably stacked in multiple layers.

[0049] As described above, the lid 1 constituting the box-shaped container 3 of this embodiment is provided with a childproof function and can improve stacking performance. Furthermore, in the lid body 1 of this embodiment, the operating piece 50 and the protective wall portion 60 are arranged on the opposite side of the container axis O from the hinge 4. Therefore, when the operating piece 50 is pulled forward (toward the protective wall portion 60), the lid main body 40 can be continuously operated around the hinge 4 within the same flow of movement. Therefore, the pulling operation of the operating piece 50 and the pulling operation of the lid main body 40 around the hinge 4 can be performed smoothly and continuously, improving the operability of the lid main body 40.

[0050] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The present embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. Furthermore, the present embodiments and their modifications include, for example, those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are equivalent.

[0051] For example, in the above embodiment, an example was given in which the frame body 20 was combined with the container flange portion 11 of the container body 2 using the fixing claw portion 27, but the fixing claw portion 27 is not essential, and the frame body 20 and the container body 2 may be combined using another locking method or another fixing method such as adhesive.

[0052] Furthermore, in the above embodiment, an example was described in which the restricting wall 30 protruding forward is provided on the outer frame wall 24 of the frame body 20, but the restricting wall 30 is not essential and does not have to be provided. In this case, for example, the operating piece 50 may be formed to be located more inward than the outer lid wall 43, so that the upper end of the operating piece 50 is engaged with the lower end of the outer lid wall 43 from the inside. [Explanation of symbols]

[0053] P3…locking position P4…Release position 1...lid body 2...Container body 3…Box-shaped container 4...hinge 20...Frame 24...Frame outer wall portion (frame peripheral wall portion) 30...Regulation wall 40…Lid body 41...Cover flange 43…Lid outer peripheral wall (lid peripheral wall) 50...Operation piece 60...Protective wall part 70...First through hole 71...Second through hole

Claims

1. a frame body that is combined with an upper end of a bottomed cylindrical container body that contains contents; a lid body connected to the frame body via a hinge and configured to openably close the opening of the frame body, the frame body has a peripheral frame wall portion that surrounds the container body from the outside in the radial direction, the lid main body has a lid flange portion placed on the frame body from above, and a lid peripheral wall portion extending downward from the lid flange portion and surrounding the frame peripheral wall portion from the outside in the radial direction, the lid peripheral wall portion is provided with an operation piece that protrudes downward from the lid peripheral wall portion, is disposed radially inward from the frame peripheral wall portion, and has an upper end portion that engages with a lower end portion of the frame peripheral wall portion from the radially inner side, The lid flange portion is provided with a protective wall portion that covers the operation piece from the outside in the radial direction and protrudes downward from the operation piece, the operating piece is displaceable from an engagement position where it is engaged with the frame peripheral wall portion to an unlocked position where it can be displaced by a pulling operation toward the protective wall portion, and the operating piece is unlocked from an engagement position where it can move over the frame peripheral wall portion from below, a first through-hole is formed in a connection portion between the lid flange portion and the protective wall portion, the first through-hole vertically penetrating a region overlapping with the operation piece when viewed from above; The lid body is characterized in that a second through hole is formed in the lid peripheral wall portion, the second through hole opening upward through the first through hole and penetrating the lid peripheral wall portion in the radial direction.

2. The lid according to claim 1, The cover body is formed so that the operation piece and the protective wall portion are located on opposite sides of the hinge in the radial direction.

3. The lid according to claim 1 or 2, The frame peripheral wall portion is provided with a restricting wall portion that protrudes outward in the radial direction and extends downward, The operating piece is connected to the lid peripheral wall portion so as to be elastically displaceable in the radial direction, and an upper end portion thereof is engaged with a lower end portion of the restricting wall portion from the inside in the radial direction.

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