Lid, container and container set

Abstract

To provide a lid, a container and a container set that enable stabilization of stacked state of containers and improvement in workability when stacking.SOLUTION: A lid 3, which is placed over a container body 2, has convex portions 22 and 23 protruding upwardly from each side edge of a top plate 21, and a regulatory convex portion 24 protruding upward from an inner side of the convex portions and having an inclined portion 31 that slopes downward toward the center part of the top plate 21. When the containers 1 are stacked on top of each other, lower protruding portions 11 and 12 protruding downward from each side of the lower surface of the upper container 1 contact the convex portions 22 and 23 or the regulatory convex portion 24 of the lower container 1, thereby regulating the horizontal relative displacement between the stacked containers 1. In the case where the upper container 1 is placed on the lower container 1 in a position displaced in the longitudinal width direction of the container 1 and then slide-stacked, when the lower protruding portion 12 on the short side of the upper container 1 slides against the top plate 21 of the lower container 1, the lower protruding portion 11 on the long side of the upper container 1 can contact the convex portion 22 on the long side of the lower container 1.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a lid, a container having a container body and a lid, and a container set. [Background technology]

[0002] Conventionally, in a container having a roughly box-shaped container body that opens upward and a lid that is placed over the container body, there is a technology in which, when the containers are stacked on top of each other, a downwardly protruding bottom surface protrusion that is provided along the outer periphery of the bottom surface of the container body of the upper container is inserted into a top surface recess that is provided in a roughly square ring shape on the top surface of the lid of the lower container, resulting in a roughly engaged state, thereby preventing relative horizontal displacement between the containers (see, for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication number 8-4423 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when a worker stacks containers, there are cases in which the container to be placed on top is first placed in a horizontally misaligned state relative to the lid of the container below, and then the upper container is slid to eliminate the misalignment (slide stacking).

[0005] An object of the present invention is to provide a lid, a container, and a container set that can improve the workability when stacking them. [Means for solving the problem]

[0006] The following describes each of the means suitable for achieving the above objects. Note that, as necessary, the specific effects of the corresponding means will be added.

[0007] Means 1. A lid body that is placed on a roughly box-shaped container body that opens upward, The lid body is A top plate portion having a generally rectangular shape in a plan view; A protrusion protruding upward from each side edge of the top plate portion or a portion adjacent thereto; a restricting protrusion protruding upward from a position of the top plate portion spaced apart from the protrusion on an inner circumferential side of the protrusion, The restricting protrusion includes an inner restricting portion that constitutes a surface of the restricting protrusion on the side of the top plate portion, and an inclined portion that constitutes a surface of the restricting protrusion on the central portion side of the top plate portion and is inclined downward toward the central portion side of the top plate portion, The cover body is characterized in that the top plate portion has a sliding contact portion that is a portion closer to the center of the top plate portion than a predetermined restricting protrusion.

[0008] According to Means 1, when the upper container is once placed at a position shifted from the specified position relative to the lid of the lower container and then displaced to the specified position (slide stacking), the upper container may hit the regulating protrusion of the lid of the lower container during slide stacking, but since the surface of the central part (sliding part side) of the top plate part of the regulating protrusion is inclined, the upper container can relatively easily overcome the regulating protrusion of the lower container and be displaced. Therefore, it is possible to improve the workability when stacking containers.

[0009] Means 2. A bottom wall portion extending downward from the outer periphery of the top plate portion or the vicinity thereof, and a fitting protrusion protruding downward from the top plate portion on the central side of the top plate portion relative to the bottom wall portion, at least a portion of which is substantially fitted into the inner side of the opening of the container body when the lid body is placed on the container body, In the vertical direction, a lower end portion of the fitting protrusion is located at the same position as a lower end portion of the lower wall portion or located higher than the lower end portion of the lower wall portion, the fitting protrusion has a finger hook on a surface of the top plate on the central portion side, on which an operator can hook his / her finger, The lid body described in Means 1 is characterized in that, in the vertical direction, the upper end of the inclined portion is located at the same position as the upper end of the convex portion or lower than the upper end of the convex portion.

[0010] According to the second means, by providing the finger hook, when an operator carries the lid body alone or in a state where the lid bodies are stacked, the lid body can be grasped by hooking fingers on the finger hook and the inclined portion of the restricting protrusion. In particular, when carrying a plurality of lid bodies in a stacked state, the plurality of lid bodies can be appropriately pinched by hooking fingers on the finger hook located slightly inward from the outer periphery of the lid body and the inclined portion of the restricting protrusion. For example, when the fingers are hooked on the convex portion and the lower wall portion located on the outer periphery or in the vicinity of the lid body, the plurality of lid bodies spread out like a fan and cannot be grasped well. Therefore, the convenience of carrying the lid body can be improved. In addition, the restricting protrusion (inclined portion) is configured not to protrude too far upward, so that damage to the restricting protrusion is suppressed, and stability can be achieved when the lower protrusion of the upper container passes over the restricting protrusion of the lower container during slide stacking.

[0011] Means 3. A substantially box-shaped container body that opens upward, The lid body described in the means 1 or 2 that is placed on the container body; In a container comprising: When stacking the containers, a slide stack is possible in which the upper container is placed at a position shifted from a specified position where the upper container is placed on the lower container with respect to the lid of the lower container, and then the upper container is slid toward the specified position; A container characterized in that the regulating protrusions are provided corresponding to a pair of side edges of the top plate portion, the pair of side edges extending in a direction approximately perpendicular to the direction of the sliding displacement.

[0012] According to the third aspect, when the containers are stacked on top of each other, the relative displacement between the containers in the direction of the sliding displacement can be restricted on both one side and the other side in the direction of the sliding displacement of the containers, thereby making it possible to further stabilize the stacked state of the containers.

[0013] Means 4. A substantially box-shaped container body that opens upward, The lid body described in the means 1 or 2 that is placed on the container body; In a container comprising: A lid fixing device is provided on an upper portion of the side wall of the container body to prevent the lid body covering the container body from falling off, A container characterized in that the lid fastener is U-shaped in cross section when in a locked state to prevent the lid from falling off, and has a curved lower surface.

[0014] Means 5. A container having a generally box-shaped container body that opens upward and a lid that is placed on the container body, The lid body is A top plate portion having a generally rectangular shape in a plan view; A protrusion protruding upward from each side edge of the top plate portion or a portion adjacent thereto; a restricting protrusion protruding upward from a position of the top plate portion spaced apart from the protrusion on an inner circumferential side of the protrusion, The restricting protrusion includes an inner restricting portion that constitutes a surface of the restricting protrusion on the side of the top plate portion, and an inclined portion that constitutes a surface of the restricting protrusion on the central portion side of the top plate portion and is inclined downward toward the central portion side of the top plate portion, the top plate portion includes a sliding contact portion that is a portion closer to a center portion of the top plate portion than a predetermined restricting protrusion portion, The container and a second container having a similar configuration to the container but smaller in size than the container, the short side width of the second container being 1 / 2 or less of the long side width of the container, and configured so that a predetermined number of the second containers can be placed side by side on the upper side of the container. Or, As the types of the container bodies, a first container body and a third container body having an upper end portion with the same outer dimension as the first container body and a lower end portion with a smaller outer dimension than the first container body are provided, As the types of the containers, a first container in which the first container body is covered with the lid body and a third container in which the third container body is covered with the lid body are provided, The first container body is placed on the lid body. A container set comprising:

[0015] According to the fifth aspect, since the second container has the same structure as the container, the second containers can be stacked on each other, and if an operator is familiar with the stacking of container slides, the second containers can be stacked relatively easily. Alternatively, even if the first and third containers have a common lid and are stacked by type, or by combining types, the containers can be stably stacked, and the containers can be stabilized in the stacked state. Therefore, it is possible to improve convenience. [Brief description of the drawings]

[0016] [Figure 1] FIG. [Diagram 2] FIG. 2 is a perspective view showing the upper surface side of the container body. [Diagram 3] FIG. 2 is a perspective view showing the lower surface side of the container body. [Figure 4] FIG. 2 is a perspective view showing the upper surface side of the lid body. [Diagram 5] FIG. 4 is a perspective view showing the underside of the lid body. [Figure 6] FIG. [Figure 7] FIG. 13 is a cross-sectional view showing a slide stack of a container. [Figure 8] 11 is a perspective view, partially in cross section, showing a state in which a second container is placed on the container. FIG. [Figure 9] FIG. 13 is a partially enlarged cross-sectional view showing a slide stack of a second container relative to the container. [Figure 10] FIG. 2 is a side view of the container showing the right half in cross section. [Figure 11] 13 is a partially enlarged cross-sectional view showing the short side convex portion and regulating convex portion of the lower container, and the peripheral area of ​​the lower short side protrusion portion of the upper container when a third container body is placed on the lid. FIG. [Figure 12] 13 is a partially enlarged cross-sectional view showing the short side convex portion and regulating convex portion of the lower container, and the peripheral area of ​​the lower short side protrusion portion of the upper container when the first container body is placed on the lid. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] An embodiment will be described below with reference to the drawings. As shown in Figures 1 and 2, the container 1 includes a container body 2 that is substantially rectangular box-shaped and opens upward, and a lid body 3 that is detachably fitted onto the container body 2. The container body 2 and the lid body 3 are each integrally formed from polypropylene.

[0018] 2 and 3, the container body 2 includes a bottom wall 4 having a generally rectangular shape in plan view, long side wall portions 5 extending upward from each long side of the bottom wall 4, and short side wall portions 6 extending upward from each short side of the bottom wall 4. In this embodiment, the long side wall portions 5 and the short side wall portions 6 extend upward at an incline toward the outside of the container body 2. This configuration allows the container bodies 2 to be stacked (nested) on top of each other by accommodating the upper container body 2 inside the lower container body 2.

[0019] The container body 2 also includes an upper flange portion 7 extending outward from the upper edge of the long side wall portion 5 and the short side wall portion 6 to the outside of the container body 2, a folded portion 8 extending downward from the outer periphery of the upper flange portion 7, and a connecting rib 9 (see FIG. 3) connecting the upper flange portion 7, the folded portion 8, and the long side wall portion 5 or the short side wall portion 6. Furthermore, a stacking rib 10 is provided, which is formed by extending the connecting rib 9 provided near both sides of each long side wall portion 5 to a position lower than the lower end of the folded portion 8. The lower end of the stacking rib 10 is located above the center of the container body 2 in the height direction, and when the container bodies 2 are nested, the lower end of the stacking rib 10 of the upper container body 2 is supported by abutting against the upper surface of the upper flange portion 7 of the lower container body 2.

[0020] As shown in FIG. 3, the container body 2 is provided with long side lower protrusions 11 protruding downward from each long side of the bottom surface of the bottom wall 4 (container body 2), short side lower protrusions 12 protruding downward from each short side of the bottom surface of the bottom wall 4, and inner peripheral ribs 13 arranged in a lattice pattern on the inner peripheral sides of the long side lower protrusions 11 and the short side lower protrusions 12. The long side lower protrusions 11 and the short side lower protrusions 12 are connected to each other at both ends, and as a whole form a substantially rectangular frame when viewed from below. The long side lower protrusions 11 and the short side lower protrusions 12 extend downward beyond the inner peripheral rib 13, and when the container body 2 is placed on a placement surface such as a floor surface, the long side lower protrusions 11 and the short side lower protrusions 12 come into contact with the placement surface. In addition, a lid fixing device 14 is provided on the upper outer surface of each short side wall portion 6, which is rotatably connected to the axial direction of the width of the short side wall portion 6 and prevents the lid body 3 covering the container body 2 from falling off (floating up) (see Figure 1, etc.).

[0021] 4, the lid 3 includes a top plate portion 21 having a generally rectangular shape in plan view, long side convex portions 22 protruding upward from each of the long side edges of the top plate portion 21, short side convex portions 23 protruding upward from each of the short side edges of the top plate portion 21, and a restricting convex portion 24 protruding upward from a position of the top plate portion 21 spaced apart from the long side convex portion 22 and the short side convex portion 23 on the inner periphery side of the long side convex portion 22 and the short side convex portion 23. The long side convex portion 22 and the short side convex portion 23 are connected to each other at both ends, and the overall shape is generally a square frame in plan view. Further, the long side convex portion 22 and the short side convex portion 23 include a convex inner wall portion 26 extending upward from each long side portion and each short side portion of the top plate portion 21, a convex upper wall portion 27 extending from the upper edge of the convex inner wall portion 26 to the outside of the lid body 3, and a convex outer wall portion 28 extending downward from the outer edge of the convex upper wall portion 27. The boundary portion between the convex upper wall portion 27 and the convex outer wall portion 28 is chamfered. Furthermore, the convex outer wall portion 28 extends downward beyond the top plate portion 21. In this embodiment, the lower portion of the convex outer wall portion 28 corresponds to the lower wall portion.

[0022] In addition, the restricting protrusions 24 of this embodiment are provided corresponding to each short side of the top plate portion 21, and extend approximately parallel to each short side protrusion 23. Furthermore, as shown in Figs. 4 and 6, the restricting protrusions 24 include an inner restricting portion 30 that constitutes the surface of the restricting protrusions 24 on the short side of the top plate portion 21, and an inclined portion 31 that constitutes the surface of the restricting protrusions 24 on the central side of the top plate portion 21 and inclines downward toward the central side of the top plate portion 21. In this embodiment, the inclined portion 31 is curved so that the portion on the central side of the top plate portion 21 bulges slightly downward (inside the restricting protrusions 24), and the portion on the short side of the top plate portion 21 bulges slightly upward. It is also possible for the inclined portion 31 to have a different curved shape or to be flat.

[0023] As shown in Fig. 10, in this embodiment, containers 1 each having a container body 2 covered with a lid 3 can be stacked vertically (hereinafter also referred to as "stacking") so that relative displacement in the horizontal direction is restricted. As shown in Fig. 12, when the containers 1 are stacked, the long side lower protrusion 11 and the short side lower protrusion 12 of the upper container 1 are installed (supported by contacting) on ​​the installation portion 33, which is a portion of the top plate portion 21 of the lower container 1 on the inner periphery side of the long side convex portion 22 and the short side convex portion 23 and on the short side and long side sides of the top plate portion 21 relative to the restricting convex portion 24 (a substantially square annular portion in plan view adjacent to the inner periphery side of the long side convex portion 22 and the short side convex portion 23). Furthermore, the lower long side protrusion portion 11 and lower short side protrusion portion 12 of the upper container 1 abut against the inner wall portion 26 of the long side protrusion portion 22 and short side protrusion portion 23 of the lower container 1, or the inner regulating portion 30 of the regulating protrusion portion 24, thereby regulating relative displacement in the horizontal direction between the stacked containers 1.

[0024] 7, in this embodiment, when stacking the containers 1, the upper container 1 is placed on the lid 3 of the lower container 1 at a position shifted in the longitudinal width direction of the container 1 from a specified position where the long side lower protrusion 11 and the short side lower protrusion 12 of the upper container 1 are placed on the installation portion 33 of the lower container 1, and then the upper container 1 is slid to the specified position to perform slide stacking. In other words, when performing slide stacking of the containers 1, the upper container 1 is first placed on the lid 3 of the lower container 1 at an angle so that one short side lower protrusion 12 of the upper container 1 abuts against the sliding contact portion 34, which is a portion of the top plate 21 of the lower container 1 that is closer to the center of the top plate 21 than the restricting protrusion 24. In this state, the lower protrusion portion 11 on the long side of the upper container 1 may be abutted against the convex portion 23 on the short side of the lower container 1 (as if leaning it at an angle), or the worker may hold it floating so that they do not abut.

[0025] Furthermore, while maintaining the state in which the short side lower protrusion 12 is in contact with the sliding contact portion 34, the upper container 1 is slid toward the specified position (the short side lower protrusion 12 is slid against the sliding contact portion 34). By performing a sliding displacement of a predetermined length, the short side lower protrusion 12 of the upper container 1 abuts against the regulating protrusion 24 of the lower container 1. At this time, since the surface of the regulating protrusion 24 on the central portion side (sliding contact portion 34 side) of the top plate portion 21 is the inclined portion 31, the short side lower protrusion 12 climbs over the regulating protrusion 24 relatively smoothly and is installed in the installation portion 33 (as shown in FIG. 12 ). In addition, as the short side lower protrusion 12 climbing over the regulating protrusion 24 is installed in the installation portion 33, the opposite short side lower protrusion 12 is also installed in the installation portion 33 at a position closer to the central portion of the top plate portion 21 than the short side protrusion 23. In this manner, the slide stack for container 1 is completed.

[0026] 2 and 3, the bottom wall 4 in this embodiment is shaped such that the areas including the centers of each of the long side and short side edges are recessed one step toward the center of the bottom wall 4 compared to the areas including the corners of the bottom wall 4. Therefore, the long side side wall 5 and short side side wall 6, and the long side lower protrusion 11 and short side lower protrusion 12 provided along each side edge of the bottom wall 4, are also shaped such that the areas including the corners of the container body 2 protrude outward from the container body 2 compared to the areas including the centers in the width direction of the long side side wall 5 and short side side wall 6 and the areas including the centers in the width direction of the long side lower protrusion 11 and short side lower protrusion 12.

[0027] Here, when sliding and stacking the containers 1, the portions of the lower short side protrusion portions 12 including the corner portions of the container body 2 abut against the top plate portion 21 (sliding contact portion 34) of the lower container 1, whereas the portions of the lower short side protrusion portions 12 including the central portion in the width direction are spaced apart from the top plate portion 21 (sliding contact portion 34) of the lower container 1 because the container body 2 is in a tilted position. In other words, the lower protrusion portion 12 on the short side is provided with a sliding portion 36 (a portion including a corner portion of the container body 2) that slides against the top plate portion 21 (sliding contact portion 34) of the lid body 3 when the container 1 is slid and stacked, and is formed adjacent to the sliding portion 36 by making the formation range of the sliding portion 36 shorter than the corresponding short side edge portion of the underside of the container body 2, and is provided with a friction reducing shape portion 37 (a portion including the widthwise central portion of the lower protrusion portion 12 on the short side) that can be separated from the top plate portion 21 of the lid body 3 and the inclined portion 31 when the container 1 is slid and stacked.

[0028] 1, the top plate 21 of this embodiment has no steps, and the installation portion 33 and the sliding portion 34 are located on the same plane. As described above, the portion of the short-side lower protrusion 12 including the corner portion of the container body 2 is made into the sliding portion 36, so that a portion of the installation portion 33 where the long-side lower protrusion 11 is installed when the containers 1 are stacked overlaps with a portion of the sliding portion 34.

[0029] Furthermore, since the long side convex portion 22 protrudes above the sliding portion 34 (top plate portion 21), when the containers 1 are slid and stacked, as shown in Figure 7, when the short side lower protrusion portion 12 (sliding portion 36) of the upper container 1 slides against the sliding portion 34 of the lower container 1, the long side lower protrusion portion 11 of the upper container 1 (the portion of the long side lower protrusion portion 11 that is connected to the sliding portion 36 of the short side lower protrusion portion 12 that slides against the sliding portion 34) abuts against the long side convex portion 22 (convex portion inner wall portion 26) of the lower container 1, thereby restricting the relative displacement in the horizontal direction that intersects the direction of the sliding displacement.

[0030] 5 to 7 and 12, the lid 3 has a fitting protrusion 41 that protrudes downward from the top plate 21 at a position closer to the center of the top plate 21 than the convex outer wall 28 (in this example, a position closer to the inner periphery of the lid 3 than the convex inner wall 26 and further outward than the inside regulating portion 30 in the inner / outer periphery direction of the lid 3, i.e., the back surface side of the installation portion 33), and at least a part of which is substantially fitted into the inner side of the opening of the container body 2 when the lid 3 is placed on the container body 2. The fitting protrusion 41 has insertion portions 42 corresponding to the respective corners of the opening of the container body 2 and finger hook portions 43 connecting the insertion portions 42, and the insertion portions 42 extend downward beyond the finger hook portions 43. Furthermore, the lid body 3 includes an inner circumferential reinforcement rib 44 that connects between the portions of the fitting protrusion 41 that correspond to a pair of long side portions of the lid body 3 on the inner circumferential side of the fitting protrusion 41, and an outer circumferential reinforcement rib 45 that connects between the fitting protrusion 41 and the convex outer wall portion 28, and the lower edges of the inner circumferential reinforcement rib 44 and the outer circumferential reinforcement rib 45 are at the same height as the lower edge of the finger hook portion 43. In other words, when the lid body 3 is placed on the container body 2, a portion including the upper flange portion 7 of the container body 2 is inserted between the convex outer wall portion 28 of the lid body 3 and the fitting protrusion 41, and the lower edge of the outer circumferential reinforcement rib 45 of the lid body 3 is supported by abutting against the upper flange portion 7 of the container body 2. Furthermore, the insertion portion 42 of the fitting protrusion 41 of the lid body 3 is inserted into the inner side of the container body 2.

[0031] Incidentally, the finger hook portion 43 of the fitting protrusion 41 is not inserted into the inside of the container body 2 even when the lid body 3 is placed over the container body 2. However, the provision of the finger hook portion 43 increases the strength and rigidity of the insertion portion 42, and also forms a portion on the underside of the lid body 3, at a position spaced a predetermined distance toward the center of the top plate 21 from an area including the long side portions and the centers of the short side portions of the top plate 21, on which an operator can hook his / her fingers on the surface on the center side of the top plate 21.

[0032] In addition, as shown in FIG. 6, the upper end of the inclined portion 31 (regulating protrusion 24) is at the same position (same height) as the upper end of the long side protrusion 22 and the short side protrusion 23 in the vertical direction. In this embodiment, in the horizontal direction, the distance between the inner regulating portion 30 of the regulating protrusion 24 and the portion of the finger hook 43 of the fitting protrusion 41 that is provided corresponding to the short side of the top plate portion 21 (hereinafter also referred to as the "short side finger hook 43") is shorter than the distance between the short side finger hook 43 and the protrusion outer wall portion 28. This results in a configuration in which the forming positions of the regulating protrusion 24 and the short side finger hook 43 are not so far apart in the horizontal direction. Also, as shown in FIG. 4, a locking recess 46 that is locked with the lid fastener 14 is provided in a range including the center of the short side protrusion 23. The locking recess 46 is provided with a locked wall portion 47 extending in a substantially horizontal direction while omitting the convex upper wall portion 27 and the upper portion of the convex outer wall portion 28. When the lid fastener 14 is in a locked state (a state in which the lid fastener 14 is rotated upward) that prevents the lid body 3 from falling off, the elastic locking piece 48 of the lid fastener 14 is pressed against the upper surface of the locked wall portion 47.

[0033] 8, a second container 51 having the same configuration as the container 1 but with a smaller size than the container 1 can be placed on the container 1 to store, transport, etc. the container 1 and the items contained in the second container 51. The short side width of the second container 51 is about 1 / 2 the long side width of the container 1 (slightly shorter than the 1 / 2 width), and the long side width of the second container 51 is approximately the same as the short side width of the container 1. Two second containers 51 are configured to be placed side by side on the upper side of the container 1 in the long side width direction of the container 1.

[0034] When two second containers 51 are placed side by side on top of the container 1, a pair of second short side lower protrusions 52 and one second long side lower protrusion 53 of the second container 51 are placed on the placement portion 33 of the container 1. As a result, the second long side lower protrusion 53 and the second short side lower protrusion 52 of the second container 51 come into contact with the convex inner wall portions 26 of the long side convex portions 22 and short side convex portions 23 of the container 1, or with the inner regulating portion 30 of the regulating convex portion 24, or the second container 51 comes into contact with another second container 51, thereby regulating relative displacement in the horizontal direction between the stacked containers 1 and the second containers 51.

[0035] In addition, when placing the second container 51 on the container 1, it is also possible to perform slide stacking by placing the second container 51 at a position shifted from a specified position (a position where a pair of second short side lower protrusions 52 and one of the second long side lower protrusions 53 are placed on the installation section 33 of the container 1) in the longitudinal width direction of the container 1 and then sliding and displacing it to the specified position side. That is, since there is an area between the pair of regulating protrusions 24 that allows the short side width of the second container 51, the second container 51 is placed between the pair of regulating protrusions 24 without tilting. Thereafter, as shown in FIG. 9, by sliding and displacing the second container 51 to the specified position side, the second long side lower protrusion 53 will overcome the regulating protrusion 24 and be installed on the installation section 33. As described above, it is possible to perform slide stacking of the second container 51 on the container 1. In this case, when the second container 51 slides between the pair of regulating protrusions 24, the pair of second long side lower protrusions 53 and the pair of second short side lower protrusions 52 (including the friction reduction shape portion 37) slide against the top plate portion 21, but when one of the second long side lower protrusions 53 slides against the inclined portion 31 of the regulating protrusion 24, the pair of second short side lower protrusions 52 move away from the top plate portion 21, and the friction reduction shape portion 37 of the second long side lower protrusions 53 also moves away from the inclined portion 31 and the top plate portion 21. Furthermore, it is also possible to slide-stack the second container 51 against the container 1 by placing the second container 51 in a tilted position such that the lower protrusion portion 53 on one second long side of the second container 51 is abutted against the sliding contact portion 34 and the lower protrusion portion 53 on the other second long side of the second container 51 is spaced upward from the container 1, and then sliding the second container 51 toward a specified position.

[0036] In addition, since the second container 51 has the same configuration as the container 1, the second containers 51 can also be slid and stacked together, and the second containers 51 are placed with their positions shifted in the longitudinal width direction and then slid. Therefore, the direction in which the second container 51 is slid and stacked above the container 1 and the direction in which the second container 51 is slid and stacked above the second container 51 placed above the container 1 intersect (approximately perpendicular).

[0037] 10, the container 1 includes, as types of container bodies 2, a first container body 62 and a third container body 64 having the same outer dimensions of an upper end portion and smaller outer dimensions of a lower end portion than the first container body 62. Therefore, as types of containers 1, a first container 61 in which the first container body 62 is covered with a lid body 3, and a third container 63 in which the third container body 64 is covered with a lid body 3 (the lid body 3 is the same as that which is covered on the first container 61) are provided. Incidentally, with regard to the first container body 62 and the third container body 64, examples of a configuration in which the outer dimensions of the upper end portions are the same size and the outer dimensions of the lower end portions are different sizes include a configuration in which the inclination angle of the long side wall portion 5 and the short side wall portion 6 of the third container body 64 is different from that of the first container body 62, a configuration in which the inclination angle is the same but the vertical widths of the long side wall portion 5 and the short side wall portion 6 are different, or a step shape is provided in the long side side wall portion 5 and the short side side wall portion 6. Also, the container 1 shown in Figures 1, 7, 8, and 9 is the first container 61, and the container body 2 shown in Figures 2 and 3 is the first container body 62.

[0038] As shown in Fig. 12, when the first container body 62 is placed on the lid body 3, the outer surface of the short side lower protrusion 12 (sliding portion 36) of the first container body 62 and the short side convex portion 23 (convex portion inner wall portion 26) of the lid body 3 can abut against each other. On the other hand, as shown in Fig. 11, when the third container body 64 is placed on the lid body 3, the inner surface of the short side lower protrusion 12 (friction reducing shape portion 37) of the third container body 64 and the inner regulating portion 30 of the regulating convex portion 24 of the lid body 3 can abut against each other. With regard to the long side lower protrusion 11, both the first container body 62 and the third container body 64 abut against the long side convex portion 22 of the lid body 3, so that the relative displacement in the horizontal direction (short width direction of the container 1) is regulated.

[0039] As described above in detail, according to this embodiment, when the containers 1 are stacked on top of each other, the long side lower protrusion 11 and the short side lower protrusion 12 of the upper container 1 abut against the convex inner wall 26 of the long side convex portion 22 and the short side convex portion 23 of the lid 3 of the lower container 1, or the inner regulating portion 30 of the regulating convex portion 24, thereby regulating relative displacement in the horizontal direction between the stacked containers 1. This makes it possible to stabilize the stacked state of the containers 1.

[0040] In addition, when performing slide stacking by placing the upper container 1 on the lid 3 of the lower container 1 at a position shifted from a specified position in the longitudinal width direction of the container 1 and then displacing it to the specified position, the short side lower protrusion 12 of the upper container 1 abuts against the long side protrusion 22 of the lower container 1 during the slide stacking, which guides the direction of the slide stack, and prevents the upper container 1 from shifting laterally with respect to the direction of the slide stack and falling off the lid 3 of the lower container 1. Furthermore, during the slide stacking, the short side lower protrusion 12 of the upper container 1 abuts against the regulating protrusion 24 of the lower container 1, but since the surface of the regulating protrusion 24 on the central side (sliding contact portion 34 side) of the top plate portion 21 is the inclined portion 31, the short side lower protrusion 12 of the upper container 1 can relatively easily overcome the regulating protrusion 24 of the lower container 1 and displace to the installation portion 33. Therefore, the workability when stacking the containers 1 can be improved.

[0041] Furthermore, the restricting protrusions 24 of the lid 3 are provided in pairs corresponding to the respective short side edges of the top plate 21. Therefore, when the third container body 64 is placed on the lid 3 (for example, when the third containers 63 are stacked on top of each other), the relative displacement between the containers 1 (for example, between the third containers 63) in the direction of the sliding displacement of the slide stack (the longitudinal width direction of the containers 1) can be restricted on both one side and the other side in the sliding displacement direction of the containers 1. As a result, the stacked state of the containers 1 can be further stabilized.

[0042] In addition, the short side lower protrusion 12 has a sliding portion 36 that slides against the sliding portion 34 of the lid 3 when the containers 1 are slid and a friction reducing shape portion 37 that can be separated from the top plate portion 21 and the inclined portion 31 of the lid 3 when the containers 1 are slid. This reduces the contact area between the upper container 1 (short side lower protrusion 12) and the lower container 1 (top plate portion 21 and inclined portion 31) when the containers 1 are slid and stacked, thereby reducing frictional resistance. This allows the upper container 1 to be slid and displaced more smoothly when the containers 1 are slid and stacked, and further improves the workability when stacking the containers 1.

[0043] The sliding portion 36 is provided in a range including the corner portion (on the lower surface) of the container body 2. Therefore, even if the short side lower protrusion 12 (sliding portion 36) of the upper container 1 comes into contact with the long side protrusion 22 of the lower container 1 during slide stacking, the upper container 1 can be prevented from protruding laterally from the upper range of the lower container 1. This allows the slide stacking operation to be performed more stably, and prevents a situation in which, when the short side lower protrusion 12 of the upper container 1 rides over the regulating protrusion 24 of the lower container 1, the short side lower protrusion 12 interferes with the long side protrusion 22 of the lower container 1, and the short side lower protrusion 12 cannot be installed on the installation portion 33 unless the upper container 1 is shifted in a direction intersecting the sliding displacement direction of the slide stack.

[0044] In addition, by providing the finger hook 43 on the underside (fitting protrusion 41) of the lid body 3, when an operator carries the lid body 3 alone or in a state where the lid bodies 3 are stacked on each other, the lid body 3 can be gripped by hooking the finger hook 43 and the inclined portion 31 of the restricting protrusion 24. In particular, when carrying a plurality of lid bodies 3 in a stacked state, the plurality of lid bodies 3 can be appropriately pinched by hooking the finger hook 43, which is located slightly inward from the outer periphery of the lid body 3, and the inclined portion 31 of the restricting protrusion 24. For example, when the fingers are hooked on the lower side of the convex inner wall portion 26 and the convex outer wall portion 28 of the short side side convex portion 23 located on or near the outer periphery of the lid body 3, the plurality of lid bodies 3 spread out like a fan and cannot be gripped well. Therefore, the convenience of carrying the lid body 3 can be improved.

[0045] In addition, in the vertical direction, the upper end of the inclined portion 31 (regulating protrusion 24) is located at the same position as the upper end of the long side protrusion 22 and the short side protrusion 23. For this reason, the regulating protrusion 24 is configured not to protrude too far upward, which suppresses damage to the regulating protrusion 24 and also provides stabilization when the short side lower protrusion 12 of the upper container 1 climbs over the regulating protrusion 24 of the lower container 1 during slide stacking.

[0046] In addition, the second container 51, whose short side width is about 1 / 2 of the long side width of the container 1 and whose long side width is almost the same size as the short side width of the container 1, has a similar configuration to the container 1, so that the second containers 51 can be slid and stacked together, and if an operator is familiar with the slid stacking of the container 1, the second containers 51 can be slid and stacked relatively easily. Furthermore, the second container 51 also has a second short side lower protrusion 52, so that, like the slid stacking of the containers 1, the second container 51 can be slid and stacked on top of the container 1 in the same direction as the slid stacking of the containers 1. In addition, when the second container 51 is placed on the top of the container 1 and when the second containers 51 are stacked on top of each other, horizontal relative displacement between the container 1 and the second container 51 and horizontal relative displacement between the second containers 51 can be prevented, and the stacked states can be stabilized.

[0047] Furthermore, the first container 61 and the third container 63 are provided as the containers 1, each of which has a first container body 62 and a third container body 64 that are different from each other in outer dimensions of the bottom end, and each of which has a common lid body 3, and even when the first containers 61 and the third containers 63 are stacked by type or by combination of types, the containers 1 can be slid and stacked stably, and the containers 1 can be stabilized in the stacked state. Therefore, convenience can be improved, etc.

[0048] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0049] (a) In the above embodiment, the regulating protrusions 24 are arranged to extend parallel to the short side protrusions 23 in correspondence with each short side edge of the top plate portion 21, but this is not particularly limited to such a configuration, and it is sufficient that the regulating protrusions 24 are positioned closer to the center of the top plate portion 21 than the installation portion 33 (the long side lower protrusions 11 and short side lower protrusions 12 of the container 1 stacked above) and are configured in a way that may contribute to preventing relative displacement in the horizontal direction when the containers 1 are in a specified stacking state.

[0050] For example, four restricting protrusions may be provided corresponding to the four corners of the top plate portion 21. For example, if each restricting protrusion 24 in the above embodiment is shaped to be divided into two, an inclined portion 31 is provided on the central side of the longitudinal width direction of the container 1, and a slide stack that slides and displaces along the longitudinal direction of the container 1 can be performed, and it is also possible to place a plurality of small containers (for example, four containers arranged in the lateral width direction of the container 1, with two containers arranged in the lateral width direction of the container 1 and two containers arranged in the longitudinal width direction of the container 1) side by side in the lateral width direction of the container 1. The shape, size, etc. of the second container to be placed on the container 1 are not particularly limited and can be changed as appropriate. For example, in the above embodiment, it is also possible to place three second containers arranged in a row, each of which has a lateral width of about 1 / 3 of the longitudinal width of the container 1. Furthermore, as a modified example of providing four regulating protrusions corresponding to the four corners of the top plate portion 21, for example, an inclined portion 31 may be provided in each regulating protrusion not only on the central side in the longitudinal width direction of the container 1 but also on the central side in the lateral width direction of the container 1, thereby enabling not only a slide stack that slides along the longitudinal direction of the container 1 but also a slide stack that slides along the lateral direction of the container 1.

[0051] The restricting protrusions 24 do not have to be provided symmetrically in a plan view. For example, the restricting protrusions may be provided continuously along one short side edge of the top plate portion 21, and may be provided intermittently (e.g., divided into two) along the other short side edge. Furthermore, for example, the restricting protrusions may be provided so as to be asymmetrical and rotationally symmetrical in a plan view. In addition, for example, the restricting protrusions may be provided corresponding to only one short side edge of the top plate portion 21. Also, for example, the restricting protrusions may be provided corresponding to only (one) long side edge of the top plate portion 21.

[0052] (b) In the above embodiment, the long side convex portion 22 and the short side convex portion 23 are provided in a generally rectangular ring shape without any breaks along the outer periphery of the top plate portion 21, but it is also possible to provide them intermittently (for example, omitting the portion of the short side convex portion 23 that faces the restricting convex portion 24). Also, in the above embodiment, the top plate portion 21 is configured in a flat plate shape, but for example, the installation portion 33 (the outer periphery portion of the top plate portion 21) may be configured to be lower than the sliding contact portion 34 (the inner periphery portion of the top plate portion 21). However, the sliding contact portion 34 is located lower than the upper end portion of the long side convex portion 22.

[0053] (c) The containers 1 of the above embodiment may be configured such that, in a stacked state, when one short side lower protrusion 12 abuts against the inner regulating portion 30 of the regulating protrusion 24 of the lower container 1, the other short side lower protrusion 12 abuts against the convex inner wall portion 26 of the short side convex portion 23 of the lower container 1. It is also possible to embody this in a container without the lid fastener 14. Incidentally, by providing the lid fastener 14, it is possible to more reliably prevent the lid body 3 from floating up during slide stacking.

[0054] (d) In the above embodiment, the container body 2 and the lid body 3 are made of polypropylene, but they may be made of other polyolefin resins (polyethylene, etc.) or synthetic resins other than polyolefins (e.g. ABS resin, AES resin, acrylic resin, polycarbonate, etc.). [Explanation of symbols]

[0055] 1...container, 2...container body, 3...lid, 11...lower protrusion portion on long side, 12...lower protrusion portion on short side, 21...top plate portion, 22...long side convex portion, 23...short side convex portion, 24...regulating convex portion, 26...convex portion inner wall portion, 28...convex portion outer wall portion, 30...inner regulating portion, 31...inclined portion, 33...installation portion, 34...sliding portion, 36...sliding portion, 37...friction reducing shaped portion, 51...second container, 52...lower protrusion portion on second short side, 53...lower protrusion portion on second long side, 61...first container, 62...first container body, 63...third container, 64...third container body.

Claims

1. A lid body that is placed on a substantially box-shaped container body that opens upward, The lid body is A top plate portion having a generally rectangular shape in a plan view; A protrusion protruding upward from each side edge of the top plate portion or a portion adjacent thereto; a restricting protrusion protruding upward from a position of the top plate portion spaced apart from the protrusion on an inner circumferential side of the protrusion, The restricting protrusion includes an inner restricting portion that constitutes a surface of the restricting protrusion on the side of the top plate portion, and an inclined portion that constitutes a surface of the restricting protrusion on the central portion side of the top plate portion and is inclined downward toward the central portion side of the top plate portion, The cover body is characterized in that the top plate portion has a sliding contact portion that is a portion closer to the center of the top plate portion than a predetermined regulating protrusion.

2. a lower wall portion extending downward from an outer periphery of the top plate portion or a vicinity thereof; and a fitting protrusion protruding downward from the top plate portion on a side closer to a center of the top plate portion than the lower wall portion, and at least a portion of the fitting protrusion being substantially fitted into an inner side of an opening of the container body when the lid body is placed on the container body, In the vertical direction, a lower end portion of the fitting protrusion is located at the same position as a lower end portion of the lower wall portion or located higher than the lower end portion of the lower wall portion, the fitting protrusion has a finger hook on a surface of the top plate on the central portion side, on which an operator can hook his / her finger, 2. The lid according to claim 1, wherein an upper end of the inclined portion is located at the same position as an upper end of the convex portion or lower than an upper end of the convex portion in the vertical direction.

3. A substantially box-shaped container body that opens upward; The lid body according to claim 1 or 2, which is placed on the container body. In a container comprising: When stacking the containers, a slide stack is possible in which the upper container is placed at a position shifted from a specified position where the upper container is placed on the lower container with respect to the lid of the lower container, and then the upper container is slid toward the specified position; A container characterized in that the regulating protrusions are provided corresponding to a pair of side edges of the top plate portion, the pair of side edges extending in a direction approximately perpendicular to the direction of the sliding displacement.

4. A substantially box-shaped container body that opens upward; The lid body according to claim 1 or 2, which is placed on the container body. In a container comprising: A lid fixing device is provided on an upper portion of the side wall of the container body to prevent the lid body covering the container body from falling off, A container characterized in that the lid fastener is U-shaped in cross section when in a locked state to prevent the lid from falling off, and has a curved lower surface.

5. A container comprising a substantially box-shaped container body that opens upward and a lid that is placed on the container body, The lid body is A top plate portion having a generally rectangular shape in a plan view; A protrusion protruding upward from each side edge of the top plate portion or a portion adjacent thereto; a restricting protrusion protruding upward from a position of the top plate portion spaced apart from the protrusion on an inner circumferential side of the protrusion, The restricting protrusion includes an inner restricting portion that constitutes a surface of the restricting protrusion on the side of the top plate portion, and an inclined portion that constitutes a surface of the restricting protrusion on the central portion side of the top plate portion and is inclined downward toward the central portion side of the top plate portion, the top plate portion includes a sliding contact portion that is a portion closer to a center portion of the top plate portion than a predetermined restricting protrusion portion, The container and a second container having a similar configuration to the container but smaller in size than the container, the short side width of the second container being 1 / 2 or less of the long side width of the container, and a predetermined number of the second containers being able to be placed side by side on the upper side of the container. Or, As the types of the container body, a first container body and a third container body having an upper end portion with the same outer dimension as the first container body and a lower end portion with a smaller outer dimension than the first container body are provided, As the types of the containers, a first container in which the first container body is covered with the lid body and a third container in which the third container body is covered with the lid body are provided, The first container body is placed on the lid body. A container set comprising:

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