Container with lid

Abstract

To improve workability of work for attaching a lid body having a lock member to a container.SOLUTION: A lid body 30 of a container with a lid includes a lock member 40 that rotates between a lock position and a release position, and a regulation part that regulates rotation of the lock member 40 in a direction away from the lock position beyond the release position. The lock member 40 includes a lock piece 42 located below the flange. The lock piece 42 is provided so as to overlap with the flange in the vertical direction when the lock member 40 is at the lock position, and so as not to overlap with the flange in the vertical direction when the lock member 40 is at the release position. The regulation part includes a first regulation part 51 provided on the lock member 40 and projecting from the lock member 40 toward the 31a of the outer peripheral upper wall, and a second regulation part 52 provided on the 31a of the outer peripheral upper wall and regulating the rotation of the lock member 40 by abutting on the first regulation part 51.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] The lid body of Patent Document 1 includes a main body that closes the opening of the container, and a locking member that is supported rotatably relative to the main body. When the locking member is placed in the locked position, the locking member engages with the container, locking the lid body to the container. When the locking member is placed in the unlocked position, the lock between the locking member and the container is released, allowing the lid body to be removed from the container. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 1-66360 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for improving the workability of attaching a lid body having a locking member to a container. [Means for solving the problem]

[0005] The lidded container that solves the above problem is a lidded container comprising a container having a flange that protrudes outward from the outer periphery of an opening, and a lid used to close the opening of the container, wherein the lid comprises a main body having an outer peripheral upper wall that overlaps the upper surface of the flange, a locking member that is supported on the outer peripheral upper wall so as to be rotatable about an axis that extends in the vertical direction, and that rotates between a locked position that restricts removal of the lid from the container and an unlocked position that allows removal of the lid from the container, and a locking member that moves away from the locked position beyond the unlocked position. and a restricting portion that restricts rotation of the locking member in the direction of rotation, the locking member having a locking piece located below the flange, the locking piece being arranged so as to overlap the flange in the vertical direction when the locking member is in the locked position and not overlap the flange in the vertical direction when the locking member is in the released position, the restricting portion having a first restricting portion that protrudes from one of the locking member and the outer peripheral upper wall, and a second restricting portion that is arranged on the other of the locking member and the outer peripheral upper wall and restricts rotation of the locking member by abutting against the first restricting portion.

[0006] According to the above configuration, the locking member does not rotate beyond the position where the first restricting portion and the second restricting portion abut. Therefore, the amount of operation required to move the locking member from the unlocked position to the locked position when attaching the lid to the container can be reduced. Therefore, the workability of attaching the lid to the container can be improved.

[0007] In one embodiment of the above-mentioned lidded container, when the first regulating portion and the second regulating portion are in contact, the angle formed between the outer edge of the main body portion and the side of the locking member when viewed from above is greater than 90°.

[0008] When storing or moving the lid, the locking member may come into contact with other members, such as a wall or floor. With the above configuration, when an impact is applied to the locking member due to such contact, the rotation direction of the locking member can be guided toward the locked position. As a result, when an impact is applied to the locking member, the locking member rotates toward the unlocked position, preventing excessive impact or pressure from being applied between the first restricting part and the second restricting part.

[0009] In one aspect of the above-mentioned lidded container, at least one of the locking member and the outer peripheral upper wall is provided with a resistance applying portion that applies local resistance while the locking member is moved from the release position to the lock position.

[0010] The locking member of the lid body is placed in the unlocked position immediately after it is removed from the container. At this time, the provision of the resistance applying portion prevents the locking member from easily moving from the unlocked position to the locked position. This allows the locking member to be stored while remaining in the unlocked position, so when attaching a stored lid body to a container, there is no need to move the locking member to the unlocked position. This further improves the efficiency of the work of attaching the lid body to a container.

[0011] In one embodiment of the above-mentioned lidded container, the first regulating portion is provided on the locking member, the second regulating portion is provided on the outer peripheral upper wall, and the resistance imparting portion is provided on the outer peripheral upper wall and is a protrusion that protrudes on the movement trajectory of the first regulating portion when the locking member is moved from the released position to the locked position.

[0012] In one aspect of the above-described container with lid, the first restricting portion is a protrusion provided on the locking member that protrudes radially outward about the axis of the locking member and extends in the up-down direction.

[0013] In one embodiment of the above-mentioned lidded container, the first regulating portion is provided on the locking member and protrudes toward the outer peripheral upper wall, a groove is provided in the outer peripheral upper wall into which the first regulating portion is inserted, and the second regulating portion is provided in the groove.

[0014] A lidded container that solves the above problem is a lidded container comprising a container having a flange protruding outward from the outer peripheral edge of an opening, and a lid for closing the opening of the container, wherein the lid comprises a main body having an outer peripheral upper wall overlapping the upper surface of the flange, and a locking member that is supported rotatably on the outer peripheral upper wall about an axis extending in the vertical direction, and moves between a locked position that restricts the removal of the lid from the container and an unlocked position that allows the removal of the lid from the container, wherein the locking member has a locking piece located below the flange, and the locking piece is arranged so that it overlaps the flange in the vertical direction when the locking member is in the locked position and does not overlap the flange in the vertical direction when in the unlocked position, and at least one of the locking member and the outer peripheral upper wall is provided with a restricting portion that restricts the rotation range of the locking member to a range where the angle formed between the outer edge of the main body and the side of the locking member in a top view is greater than 90°.

[0015] According to the above configuration, the locking member does not rotate beyond the position limited by the restricting portion. Therefore, the amount of operation required to move the locking member from the unlocked position to the locked position during the work of attaching the lid to the container can be reduced. Therefore, the work efficiency of the work of attaching the lid to the container can be improved.

[0016] Furthermore, with the above configuration, when an impact is applied to the locking member, the rotation direction of the locking member can be guided toward the locked position, thereby preventing the locking member from rotating toward the unlocked position when an impact is applied to the locking member, and preventing excessive impact or pressure from being applied to the restricting portion. [Effects of the Invention]

[0017] According to the present invention, the workability of attaching a lid body having a locking member to a container can be improved. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view of a container with a lid. [Figure 2] FIG. 2 is an enlarged view of the periphery of the locking member in FIG. [Figure 3] FIG. 3 is an exploded perspective view of the periphery of the locking member. [Figure 4] FIG. 4 is a perspective view of the periphery of the locking member. [Figure 5] FIG. 5 is a top view of the cover with the locking member in the locked position. [Figure 6] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. [Figure 8] FIG. 8 is a top view of the cover with the locking member in the unlocked position. [Figure 9] FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. [Figure 10] FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. [Figure 11] FIG. 11 is a top view showing a locking portion of a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0019] An embodiment of the lid of the present invention will be described below. 1, the container with lid includes a container 20 and a lid 30. The lid 30 is used to close the opening of the container 20. The lid 30 and the container 20 are made of, for example, plastic.

[0020] <container> The container 20 is box-shaped and has a bottom wall 21 and side walls 22 connected to the outer periphery of the bottom wall 21. The example container 20 shown in Fig. 1 is a square box-shaped container in which the bottom wall 21 and the side walls 22 are rectangular. The outer shape of the container 20 is not limited to a square box-shaped container.

[0021] Each of the side walls 22 of the container 20 is provided with a flange 23 that protrudes laterally outward from the upper end of the side wall 22. The flange 23 is formed with a constant width along the upper edge of the side wall 22. The side walls 22 of the container 20 may be provided with a structure such as a rib, as necessary.

[0022] <Basic structure of the lid> As shown in FIG. 1 , the lid 30 includes a flat main body 31. The planar shape of the main body 31 matches the shape of the opening of the container 20. In the following, as an example, a case will be described in which the planar shape of the main body 31 is a rectangle having long and short sides. Furthermore, unless otherwise specified, the "inside" described below refers to the leading end side in the direction from the outer edge of the lid 30 toward the center when viewed from above. Similarly, the "outside" refers to the leading end side in the direction from the center of the lid 30 toward the outer edge when viewed from above.

[0023] The main body 31 includes an annular outer peripheral upper wall 31a that overlaps the upper surface of the flange 23 of the container 20, a peripheral wall 31b that protrudes downward from the outer edge of the outer peripheral upper wall 31a, and a central upper wall 31c that is formed inside the outer peripheral upper wall 31a and closes the opening of the container 20. A bank portion 32 that protrudes upward and extends along the outer edge of the outer peripheral upper wall 31a is formed on the outer peripheral upper wall 31a.

[0024] Mounting portions 33 for mounting a locking member 40, which will be described later, are formed on the outer peripheral upper wall 31a. In the example shown in Fig. 1, the mounting portions 33 are formed in four locations, near both ends of the portion of the outer peripheral upper wall 31a that is located on the long sides of the main body 31. The positions and number of the mounting portions 33 formed on the outer peripheral upper wall 31a are not particularly limited, and can be changed as appropriate depending on the outer shape of the lid 30, etc.

[0025] 2 and 3, the mounting portion 33 is a portion of the outer peripheral upper wall 31a where the bank portion 32 is not formed. The mounting portion 33 includes an upper mounting surface 34 that is a part of the outer peripheral upper wall 31a, and a through-hole 35 that spans the outer peripheral upper wall 31a and the peripheral wall 31b and connects both walls. The upper mounting surface 34 is formed with a rotation support portion 36 for supporting the locking member 40 and a lid-side holding portion 37 for holding the locking member 40 in a locked position, which will be described later.

[0026] The rotation support portion 36 is formed in a position adjacent to the side of the through hole 35 in the outer peripheral upper wall 31a. The side of the through hole 35 means the side in the direction along the outer edge of the outer peripheral upper wall 31a. The rotation support portion 36 is a circular hole formed in the upper mounting surface 34. The rotation support portion 36, together with a rotation shaft 41a described below, constitutes a support mechanism that rotatably supports the locking member 40. The specific configuration of the support mechanism is not particularly limited as long as it is a configuration that can rotatably support the locking member 40.

[0027] The lid-side holding portion 37 is formed in a portion of the outer peripheral upper wall 31a that is positioned more inward than the through-hole 35. The lid-side holding portion 37 is a protrusion that protrudes from the outer peripheral upper wall 31a and extends along the inner edge of the through-hole 35. The lid-side holding portion 37 has an inclined surface 37a that gradually increases in height from the through-hole 35 side toward the inside. Note that the specific configuration of the lid-side holding portion 37 is not particularly limited as long as it is a configuration that can hold the locking member 40 in the locked position.

[0028] A locking member 40 is attached to the attachment portion 33 of the outer peripheral upper wall 31a and is supported rotatably relative to the outer peripheral upper wall 31a. The locking member 40 rotates between a locked position that prevents the lid 30 from being removed from the container 20 and an unlocked position that allows the lid 30 to be removed from the container 20. Figures 1 and 2 show the locking member 40 in the locked position. Below, each component of the locking member 40 will be described assuming that the locking member 40 is in the locked position.

[0029] As shown in Figures 2, 3, and 4, the locking member 40 includes a plate-shaped base 41 disposed on the upper mounting surface 34, and a lock piece 42 formed on the tip side of the base 41. As shown in Figure 3, a cylindrical rotation shaft 41a that protrudes downward is provided on the proximal end side of the base 41. The rotation shaft 41a is formed separately from the base 41 and is fixed to the base 41 by a fixing member 41b such as a screw or a pin. The rotation shaft 41a is inserted into the rotation support part 36. As a result, the base end portion, which is one end of the base 41, is supported by the rotation support part 36 so as to be rotatable about an axis extending in the vertical direction.

[0030] The tip of the base 41 is located above the through-hole 35 and above the lid-side holding portion 37. A lock-side holding portion 45 that engages with the lid-side holding portion 37 is formed on the inner edge of the tip of the base 41. The lock-side holding portion 45 is a protrusion with a semicircular cross section that extends in the direction in which the base 41 extends.

[0031] As shown in Figures 4, 5, and 6, the locking piece 42 is a wall portion with an L-shaped cross section that is integrally formed on the underside of the tip of the base 41 and is disposed within the through-hole 35. The locking piece 42 is partially formed on the underside of the tip of the base 41, and is not formed on the underside of the base end side of the base 41. The locking piece 42 includes a connecting wall 43 that extends downward from the outer edge of the tip of the base 41, and a sandwiching wall 44 that extends inward from the tip of the connecting wall 43. The upper surface of the sandwiching wall 44 faces the underside of the tip of the base 41 at a specific distance. The specific distance is set to a value obtained by adding a predetermined clearance to the sum of the thickness of the outer peripheral upper wall 31a of the lid 30 and the thickness of the flange 23 of the container 20.

[0032] 6 and 7, the tip portion 44a of the sandwiching wall 44 is formed in a shape that is slightly curved downward so as to increase the distance from the underside of the tip portion of the base 41. As shown in Fig. 5, the sandwiching wall 44 is formed in a shape such that the width, which is the length of protrusion from the connecting wall 43, gradually increases from the base end side of the base 41 toward the tip side.

[0033] The position of the tip portion 44a of the clamping wall 44 is not particularly limited. For example, in the cross-sectional view shown in Fig. 7, the tip portion 44a of the clamping wall 44 is located outside the tip of the locking side holding portion 45 (towards the connecting wall 43), but it may be located directly below the tip of the locking side holding portion 45. In other words, the position of the tip portion 44a of the clamping wall 44 may be a position that overlaps the tip of the locking side holding portion 45 in the up-down direction. Furthermore, the shape of the clamping wall 44 is not limited to the above-mentioned shape. For example, the width of the clamping wall 44 may be constant.

[0034] 2, the outer side surface of locking member 40 is formed by the side surface of base 41 and the outer surface of connecting wall 43 of locking piece 42. The outer side surface of locking member 40 is preferably located on the same plane as the outer surface of peripheral wall 31b or more inward than the outer surface of peripheral wall 31b. In other words, it is preferable that the outer side surface of locking member 40 does not protrude outward beyond the outer surface of peripheral wall 31b when viewed from above.

[0035] The outer side surface of the locking member 40 is preferably flat and parallel to the outer surface of the peripheral wall 31b. In this case, it is easy to position the outer side surface of the locking member 40 on the same plane as the outer surface of the peripheral wall 31b or more inward than the outer surface of the peripheral wall 31b. In this case, it is also easy to ensure a wide locking engagement, i.e., the area of ​​the flange 23 sandwiched between the outer peripheral upper wall 31a of the lid 30 and the sandwiching wall 44 of the locking member 40, when locked. The locking engagement will be described in detail later.

[0036] The outer side surface of the locking member 40 does not have to be flat and parallel to the outer surface of the peripheral wall 31b. For example, the locking member 40 may have a recessed shape (V-shaped when viewed from above) in the middle. The shape of the inner side surface of locking member 40 is not particularly limited. For example, the shape of the inner side surface of locking member 40 may be a flat surface parallel to the outer surface of peripheral wall 31b, or may be a V-shaped surface with a recessed middle portion (V-shaped when viewed from above). Furthermore, the shape of the inner side surface of locking member 40 may be symmetrical to the outer side surface, or may be asymmetrical (for example, the outer side surface may be a flat surface parallel to the outer surface of peripheral wall 31b, and the inner side surface may be a recessed middle portion).

[0037] 8 illustrates a state in which the locking member 40 has rotated clockwise from the locked position to the unlocked position. When the locking member 40 is in the unlocked position, the clamping wall 44 of the locking piece 42 is located outside the through-hole 35. Furthermore, when the locking member 40 is in the unlocked position, the outer side surface of the locking member 40 protrudes outward beyond the outer surface of the peripheral wall 31b in a top view.

[0038] <Regulation Department> The cover 30 is provided with a restricting portion that restricts the rotation of the locking member 40 beyond the release position and in a direction away from the locking position. The restricting portion in this embodiment is composed of a first restricting portion 51 provided on the locking member 40 and a second restricting portion 52 provided on the outer peripheral upper wall 31 a.

[0039] 5, the end surface on the base end side of the base 41 of the locking member 40 is formed in an arc shape centered on the axis of the rotation shaft of the locking member 40. The arc-shaped end surface is formed with a first restricting portion 51 in the shape of a protrusion that protrudes radially outward around the axis of the rotation shaft and extends in the up-down direction. The first restricting portion 51 is formed to a length such that, when the locking member 40 is in the locked position, the tip of the first restricting portion 51 does not protrude outward beyond the outer surface of the peripheral wall 31b in a top view.

[0040] A second restricting portion 52, which is a wall-like protrusion that protrudes upward from the outer peripheral upper wall 31a, is formed on the outer peripheral upper wall 31a near the base end of the base portion 41 of the locking member 40. The second restricting portion 52 is disposed on a movement trajectory of the first restricting portion 51 when the locking member 40 is rotated. In this embodiment, the second restricting portion 52 is formed integrally with the bank portion 32 so as to be continuous with the end face of the bank portion 32.

[0041] As shown in FIG. 8 , when the locking member 40 is positioned so that the first restricting portion 51 and the second restricting portion 52 abut against each other, the clamping wall 44 of the locking piece 42 is positioned outside the through-hole 35. In other words, the position of the first restricting portion 51 on the base 41 of the locking member 40 and the position of the second restricting portion 52 on the outer peripheral upper wall 31a are adjusted so that the first restricting portion 51 and the second restricting portion 52 abut against each other within a rotation range in which the clamping wall 44 of the locking piece 42 is positioned outside the through-hole 35. The unlocked position is the position where the first restricting portion 51 and the second restricting portion 52 abut against each other. The rotation angle of the locking member 40 required to move between the locked position and the unlocked position, i.e., the range of rotation of the locking member 40, is, for example, between 10° and 90°. It is preferable that the rotation range be small. By narrowing the rotation range, the amount of operation required to operate the locking member 40 can be reduced.

[0042] When the first restricting portion 51 and the second restricting portion 52 are in contact with each other, the angle θ formed between the outer side surface of the locking member 40 and the outer surface (the outer edge of the main body portion) of the peripheral wall 31b is preferably greater than 90°. The angle θ is preferably 120° or greater, and more preferably 135° or greater. The angle is, for example, 150° or less.

[0043] <Resistance applying section> The cover 30 includes a resistance applying portion that locally applies resistance to the locking member 40 while the locking member 40 is being moved from the locked position to the unlocked position, and while the locking member 40 is being moved from the unlocked position to the locked position. In this embodiment, the resistance applying portion is configured by a resistance portion 53 provided on the outer peripheral upper wall 31 a.

[0044] The resistance portion 53 is a protrusion that protrudes upward from the outer peripheral upper wall 31a. More specifically, the resistance portion 53 is a protrusion that abuts against the first restricting portion 51 when the locking member 40 is rotated between the locked position and the unlocked position, and has a height that allows the first restricting portion 51 to overcome it. The protruding height of the resistance portion 53 is lower than the protruding height of the second restricting portion 52. Furthermore, the resistance portion 53 preferably has a shape that allows the first restricting portion 51 to easily overcome it, such as a hemispherical or conical shape.

[0045] While the locking member 40 is being moved from the unlocked position to the locked position, resistance is applied to the locking member 40 while the resistance portion 53 and the first restricting portion 51 are in contact. The timing at which resistance is applied between the locked position and the unlocked position, i.e., the rotational position at which the locking member 40 is positioned when resistance is applied, can be adjusted by the position at which the resistance portion 53 is formed on the outer circumferential upper wall 31a.

[0046] When the locking member 40 is rotated from the unlocked position toward the locked position, the rotation angle until the resistance is applied is defined as the first angle. In this case, the first angle is, for example, 0° or more and 45° or less, and preferably 0°. Furthermore, when the locking member 40 is rotated from the locked position toward the unlocked position, the rotation angle until the resistance is applied is defined as the second angle. In this case, the second angle is, for example, 45° or more and 90° or less.

[0047] <effect> Next, the operation of this embodiment will be described. When attaching the lid body 30 to the container 20, the lid body 30 is placed on the container 20 with all of the locking members 40 in the unlocked position. At this time, the lid body 30 is placed so that the outer peripheral upper wall 31a of the lid body 30 overlaps the flange 23 of the container 20. Next, the locking members 40 in the unlocked position are rotated to the locked position.

[0048] As shown in Figure 7, when the locking member 40 moves to the locked position, the clamping wall 44 of the locking piece 42 of the locking member 40 is inserted into the through-hole 35 and positioned below the flange 23 of the container 20. The flange 23 of the container 20 is clamped between the outer peripheral upper wall 31a of the lid body 30 placed on top of it and the clamping wall 44 of the locking member 40, thereby restricting removal of the lid body 30 from the container 20. The area of ​​the flange 23 that is clamped between the outer peripheral upper wall 31a of the lid body 30 and the clamping wall 44 of the locking member 40 becomes the locking engagement area.

[0049] Furthermore, when the locking member 40 is moved to the locked position, the lid-side holding portion 37 provided on the upper mounting surface 34 of the outer peripheral upper wall 31a engages with the lock-side holding portion 45 provided at the tip of the base 41 of the locking member 40. In other words, when an attempt is made to move the locking member 40 from the locked position to the unlocked position, an engagement occurs between the lid-side holding portion 37 and the lock-side holding portion 45. This engagement maintains the locking member 40 in the locked position, i.e., the state in which the locking member 40 prevents the lid body 30 from being removed from the container 20.

[0050] As shown in Figures 8, 9, and 10, when removing the lid 30 from the container 20, all of the locking members 40 that are in the locked position are rotated to the unlocked position. At this time, the locking members 40 are rotated with enough force to release the engagement between the lid-side holding portions 37 and the lock-side holding portions 45. When the locking members 40 move to the unlocked position, the clamping walls 44 of the locking pieces 42 of the locking members 40 are retracted to the outside of the through-hole 35. In other words, the clamping walls 44 are retracted to a position where they do not overlap with the flange 23 in the vertical direction. This releases the state in which the flange 23 of the container 20 is clamped between the outer peripheral upper wall 31a of the lid 30 and the clamping walls 44, making it possible to remove the lid 30 from the container 20.

[0051] As shown in FIG. 8 , in the case of the lid body 30 of this embodiment, when the locking member 40 is moved to the unlocked position, the first restricting portion 51 protruding from the locking member 40 comes into contact with the second restricting portion 52 provided on the outer peripheral upper wall 31 a. Therefore, the locking member 40 does not rotate beyond the unlocked position in a direction away from the locked position. This reduces the amount of operation required to move the locking member 40 from the unlocked position when attaching the lid body 30 to the container 20. Similarly, it reduces the amount of operation required to move the locking member 40 from the locked position when removing the lid body 30 from the container 20. As a result, the operability of attaching the lid body 30 to the container 20 and removing it from the container 20 is improved.

[0052] Furthermore, the locking member 40 of the lid body 30 removed from the container 20 is moved to a predetermined storage location for storage, for example. If the lid body 30 is stored or moved with the locking member 40 in the unlocked position, the locking member 40 in the unlocked position may move due to inertial forces that occur when the lid body 30 is moved.

[0053] Here, in the case of the lid body 30 of this embodiment, a resistance applying portion is provided that applies local resistance to the locking member 40 that is attempting to move from the unlocked position to the locked position. This prevents the locking member 40 from easily moving from the unlocked position to the locked position. In this case, when the stored lid body 30 is to be reattached to the container 20, there is no need to perform an operation to move the locking member 40 from the locked position to the unlocked position. This further improves the efficiency of the work of attaching the lid body 30 to the container 20.

[0054] <Effects> Next, the effects of this embodiment will be described. (1) The lid body 30 of the lidded container comprises a main body 31 having an outer peripheral upper wall 31a that overlaps the upper surface of the flange 23 of the container 20, a locking member 40 that is supported on the outer peripheral upper wall 31a so as to be rotatable about an axis extending in the vertical direction and that rotates between a locking position that restricts removal of the lid body 30 from the container 20 and an unlocked position that allows removal of the lid body 30 from the container 20, and a restricting portion that restricts rotation of the locking member 40 beyond the unlocked position and in a direction away from the locked position.

[0055] The locking member 40 has a locking piece 42 located below the flange 23. The locking piece 42 is arranged so as to overlap the flange 23 in the vertical direction when the locking member 40 is in the locked position, and not to overlap the flange 23 in the vertical direction when the locking member 40 is in the released position. The restricting portion includes a first restricting portion 51 that is provided on the locking member 40 and protrudes from the locking member 40 toward the outer peripheral upper wall 31a, and a second restricting portion 52 that is provided on the outer peripheral upper wall 31a and restricts the rotation of the locking member 40 by abutting against the first restricting portion 51.

[0056] According to the above configuration, the workability of attaching the lid body 30 to the container 20 is improved. Furthermore, the above configuration also improves the workability of removing the lid body 30 from the container 20. When moving the locking member 40 from the locked position to the unlocked position, the user can recognize that the locking member 40 has reached the unlocked position because the first restricting portion 51 and the second restricting portion 52 come into contact with each other. This prevents the locking member 40 from being moved more than necessary after the lock is released. As a result, the workability of removing the lid body 30 from the container 20 is also improved.

[0057] Furthermore, the above configuration facilitates maintaining smooth rotation of the locking member 40. Without the first restricting portion 51 and the second restricting portion 52, the locking member 40 could rotate toward the unlocked position to a position where the locking piece 42 abuts against the outer peripheral upper wall 31a or the peripheral wall 31b. If the locking piece 42 collides with the outer peripheral upper wall 31a or the peripheral wall 31b with a strong force, the locking piece 42 may be deformed. Deformation of the locking piece 42 hinders smooth rotation of the locking member 40. In other words, if the locking piece 42 is deformed, when the locking member 40 is rotated, the locking piece 42 may come into contact with a component that it would not normally contact (e.g., the flange 23), thereby applying unnecessary resistance to the rotation of the locking member 40. With the above configuration, the first restricting portion 51 and the second restricting portion 52 abut against each other before the locking piece 42 abuts against the outer peripheral upper wall 31a or the peripheral wall 31b, thereby preventing further rotation of the locking member 40 toward the unlocked position. This prevents the locking piece 42 from being deformed, and as a result, the locking member 40 maintains smooth rotation.

[0058] (2) The locking member 40 and the outer peripheral upper wall 31a are provided with resistance applying portions that locally apply resistance while the locking member 40 is being moved from the release position to the lock position. This configuration further improves the efficiency of the work of attaching the lid body 30 to the container 20.

[0059] (3) When the first restricting portion 51 and the second restricting portion 52 are in contact with each other, the angle formed between the outer edge of the main body 31 and the side surface of the locking member 40 in a top view is greater than 90°. When storing or moving the lid body 30, the locking member 40 may come into contact with other members, such as a wall or floor. With the above configuration, when an impact is applied to the locking member 40, the rotation direction of the locking member 40 can be guided in the direction toward the locked position. As a result, when an impact is applied to the locking member 40, the locking member 40 rotates toward the released position, and it is possible to prevent excessive impact or pressure from being applied between the first restricting portion 51 and the second restricting portion 52.

[0060] (4) The tip portion 44a of the sandwiching wall 44 is formed in a shape that curves downward so that the distance between the tip portion 44a and the lower surface of the base portion 41 increases. When the locking member 40 is moved to the locked position, the tip portion 44a of the clamping wall 44 of the locking member 40 may come into contact with the flange 23 of the container 20. According to the above configuration, the tip portion 44a is formed in a downwardly curved shape, so that the clamping wall 44 that has come into contact with the flange 23 can be smoothly moved below the flange 23.

[0061] (5) The sandwiching wall 44 is formed in a shape such that the width gradually increases from the base end side of the base portion 41 toward the tip end side. According to the above configuration, the width of the clamping wall 44 at the base end side of the base 41 is narrowed, so that when the locking member 40 is rotated from the locked position to the unlocked position, the clamping wall 44 can be retracted from under the flange 23 with a small rotation amount. Therefore, it is possible to set the unlocked position close to the locked position, that is, to reduce the rotation angle of the locking member 40 required to move between the locked position and the unlocked position. As a result, the amount of operation of the locking member 40 during the operation of attaching and detaching the lid 30 to and from the container 20 can be reduced. Furthermore, the width of the clamping wall 44 at the tip end side of the base 41 is widened. As a result, even if the width of the base end side of the base 41 is narrowed, the overlapping area between the flange 23 and the clamping wall 44 at the locked position can be secured.

[0062] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. The support mechanism may be configured to rotatably support the locking member 40 and is not limited to the rotation support portion 36 and rotation shaft 41a of the above embodiment. For example, a support mechanism that engages in a snap-fit ​​manner may be used. Specifically, instead of the rotation shaft 41a and the fixed member 41b, a pair of engagement pieces extending downward from the underside of the base 41 and having engagement claws at their tips are provided. An annular groove is also formed on the inner circumferential surface of the hole serving as the rotation support portion 36. In this case, the locking member 40 is attached by inserting the pair of engagement pieces into the rotation support portion 36. The snap-fit ​​engagement, i.e., the elasticity of the engagement pieces allows the engagement claws to fit into the grooves of the rotation support portion 36, thereby rotatably supporting the locking member 40 relative to the rotation support portion 36.

[0063] The shape and position of the second restricting portion 52 may be changed. For example, the second restricting portion 52 may be formed away from the bank portion 32. Furthermore, instead of the second restricting portion 52 protruding from the upper mounting surface 34, the second restricting portion 52 may protrude from the end face of the bank portion 32.

[0064] The configurations of the first restricting portion 51 and the second restricting portion 52 are not limited to those in the above embodiment, and may be any configuration that can restrict the rotation of the locking member 40 by abutting against each other.

[0065] 11, for example, the second restricting portion is provided with an arc-shaped groove 52a that opens upward on the upper mounting surface 34 and is centered on the rotation axis of the rotation support portion 36. Furthermore, the first restricting portion is provided with a protrusion 51a that protrudes downward from the lower surface of the base 41 of the locking member 40 and is housed in the groove 52a. In this case, when the locking member 40 is rotated, the protrusion 51a on the locking member 40 side abuts against the wall surface that forms the end of the groove 52a, thereby restricting further rotation of the locking member 40.

[0066] The configuration of the resistance applying portion is not limited to that of the above embodiment, and may be any configuration that can apply resistance locally on the movement trajectory of the locking member 40. For example, as shown in FIG. 11, a protruding resistance portion 53a protruding from the bottom surface of the groove portion 52a is provided. In this case, resistance is applied when the protrusion 51a on the locking member 40 side moves over the resistance portion 53a within the groove portion 52a. The resistance applying portion may also be omitted. [Explanation of symbols]

[0067] θ…Angle 20...Container 23...Flange 30...lid body 31...Main body 31a...Outer periphery upper wall 31b...peripheral wall 31c…Central top wall 32...Embankment 33...Mounting part 34...Mounting top surface 35...Through hole 36...Rotation support part 37…Lid side holding part 37a…Slope surface 40... Locking member 41...Base 42...Lock piece 43...Connecting wall 44...Pinching wall 44a...Tip part 45...Lock side retaining part 51...First Regulatory Section 52...Second Regulatory Section 53,53a...Resistance section

Claims

1. A lidded container comprising a container having a flange protruding outward from an outer peripheral edge of an opening, and a lid body used to close the opening of the container, The lid body is a main body portion having an outer peripheral upper wall overlapping an upper surface of the flange; a locking member that is supported by the outer peripheral upper wall so as to be rotatable about an axis extending in the vertical direction, and that rotates between a locking position that restricts removal of the lid body from the container and an unlocking position that allows removal of the lid body from the container; a restricting portion that restricts rotation of the locking member beyond the release position in a direction away from the locking position, The locking member includes a locking piece located below the flange, the lock piece is provided so as to overlap the flange in the vertical direction when the lock member is in the locked position, and so as not to overlap the flange in the vertical direction when the lock member is in the released position, The restriction portion is a first restricting portion protruding from one of the locking member and the outer peripheral upper wall; a second restricting portion provided on the other of the locking member and the outer peripheral upper wall, which restricts rotation of the locking member by abutting against the first restricting portion.

2. 2. A lidded container as described in claim 1, wherein when the first regulating portion and the second regulating portion are in abutting contact, the angle formed between the outer edge of the main body portion and the side of the locking member in a top view is greater than 90°.

3. A lidded container as described in claim 1 or claim 2, wherein at least one of the locking member and the outer peripheral upper wall is provided with a resistance applying portion that applies local resistance while the locking member is moved from the release position to the lock position.

4. the first restricting portion is provided on the locking member, The second restricting portion is provided on the outer peripheral upper wall, The lidded container according to claim 3, wherein the resistance applying portion is a protrusion provided on the outer peripheral upper wall and protruding on the movement trajectory of the first regulating portion when the locking member is moved from the release position to the locking position.

5. 3. The lidded container according to claim 1, wherein the first restricting portion is a protrusion provided on the locking member, protruding radially outward about the axis of the locking member and extending in the vertical direction.

6. the first restricting portion is provided on the locking member and protrudes toward the outer peripheral upper wall, a groove into which the first restricting portion is inserted is provided on the outer peripheral upper wall; The container with lid according to claim 1 or 2, wherein the second restricting portion is provided in the groove.

7. A lidded container comprising a container having a flange protruding outward from an outer peripheral edge of an opening, and a lid for closing the opening of the container, The lid body is a main body portion having an outer peripheral upper wall overlapping an upper surface of the flange; a locking member that is supported by the outer peripheral upper wall so as to be rotatable about an axis extending in the vertical direction, and that moves between a locking position that restricts removal of the lid body from the container and an unlocking position that allows removal of the lid body from the container, The locking member includes a locking piece located below the flange, the lock piece is provided so as to overlap the flange in the vertical direction when the lock member is in the locked position, and so as not to overlap the flange in the vertical direction when the lock member is in the released position, A lidded container characterized in that at least one of the locking member and the outer peripheral upper wall is provided with a regulating portion that restricts the rotation range of the locking member to a range in which the angle formed between the outer edge of the main body and the side of the locking member in a top view is greater than 90°.

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