Case

Abstract

The objective of the present invention is to improve the workability of a case. A case 10 includes a box-like main body portion 20 having a plurality of side walls 100 and a bottom wall, and a lid portion 105 covering an opening provided in an upper surface of the main body portion 20, the case 10 being capable of internally accommodating a working machine. The plurality of side walls 100 include a front wall 101, a rear wall 102, a right wall 103 and a left wall. The case 10 is provided with a plurality of corner portions 110 connecting together adjacent side walls among the plurality of side walls 100, and columnar hooking bars 120 which are provided in the corner portions 110 and which extend in a direction intersecting a vertical direction. The hooking bars 120 are disposed in positions that do not overlap the lid portion 105 when viewed in the vertical direction.

Description

case

[0001] The present invention relates to a case capable of storing a work machine or the like.

[0002] For example, Patent Document 1 discloses a case capable of storing power tools, which has a case body for storing the power tools and a lid that engages with the case body. This case allows the power tools to be stored inside by opening and closing the lid.

[0003] Japanese Patent Application Laid-Open No. 2019-181694

[0004] In the case described in the aforementioned Patent Document 1, when storing or removing a work tool such as a power tool in the case main body, the worker must open and close the lid. Therefore, there is a demand for a system that allows the case main body to easily support the work tool and its accessories without opening and closing the lid. In this case, there is a demand for reducing the size restrictions on the work tool and its accessories that the case main body can support, as well as reducing the restrictions on the shape of the work tool and its accessories, thereby improving workability.

[0005] An object of the present invention is to provide a case with improved workability.

[0006] The case of the present invention has a box-shaped main body having a plurality of side walls and a bottom wall, and a lid covering an opening on the top surface of the main body, the plurality of side walls including a front wall, a rear wall, a right wall and a left wall, and is equipped with a plurality of corners connecting adjacent side walls among the plurality of side walls, and columnar hook portions provided at the corners and extending in a direction intersecting the vertical direction, and the hook portions are positioned in a position that does not overlap with the lid portion when viewed in the vertical direction.

[0007] According to the present invention, the workability of the case can be improved.

[0008] 10 is a partial top view showing the hooking range of the work machine in the structure of the work machine hooked on the hook bar in the case shown in FIG. 10. FIG. 11 is a perspective view showing the structure of the case according to an embodiment of the present invention. FIG. 12 is a top view showing the structure of the case shown in FIG. 10. FIG. 13 is a top view showing the structure of the case shown in FIG. 12. FIG. 14 is a right side view showing the structure of the case shown in FIG. 10. FIG. 15 is a left side view showing the structure of the case shown in FIG. 10. FIG. 16 is a perspective view showing the structure of the case shown in FIG. 10. FIG. 17 is a front view showing the structure of the case shown in FIG. 10. FIG. 18 is a top view showing the structure of the hooking bar shown in FIG. 12. FIG. 18 is a diagram showing the structure of the hooking bar shown in FIG. 12, where (a) is a front view, (b) is a top view, (c) is a back view, and (d) is a bottom view. 19 is a diagram showing the structure of the hooking bar shown in FIG. 12, where (a) is a right side view and (b) is a left side view. It is a cross-sectional view showing the structure with the hooking plate shown in FIG. 12 attached. It is a perspective view showing the structure with a work machine hooked on the hooking plate shown in FIG. 12. It is a perspective view showing the structure with a front hooking plate (rear-mounted hooking portion) attached to the hooking bar in the case shown in FIG. 1. It is a perspective view showing the structure with a vertical hooking plate (rear-mounted hooking portion) attached to the hooking bar in the case shown in FIG. 1. It is a perspective view showing the structure with an external hooking plate (rear-mounted hooking portion) attached to the vertical hooking plate shown in FIG. 19. It is a perspective view showing the structure of a case according to a first modified example of the embodiment of the present invention. It is a perspective view showing the structure of a case according to a second modified example of the embodiment of the present invention. It is a perspective view showing the stack structure of a case according to a third modified example of the embodiment of the present invention. It is a perspective view showing the locked state of the stack structure shown in the third modified example. It is a perspective view showing the state in which luggage is bound with a rubber band in the stack structure shown in the third modified example. It is a perspective view showing the stack structure shown in the third modified example as mounted on a vehicle. It is a perspective view showing the stack structure shown in the third modified example as a tool is inserted in the stack structure shown in the third modified example.10 is a perspective view showing a structure of a case according to a fourth modified example of the embodiment of the present invention, and FIG. 11 is a cross-sectional view showing a structure with a hooking plate attached according to a fifth modified example of the embodiment of the present invention.

[0009] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. Note that the same or equivalent components, members, etc. shown in each drawing are designated by the same reference numerals, and redundant description will be omitted where appropriate.

[0010] In this embodiment, the front-rear, up-down, and left-right directions are defined using FIGS. 1, 21, and 22. The case 10 of this embodiment is a box-shaped container capable of storing, for example, a work machine 60 such as a power tool and accessories for the work machine 60. The structure of the case 10 shown in FIGS. 1 to 8 includes a box-shaped main body 20 having a plurality of side walls 100 and a bottom wall 106, and a lid 105 that covers an opening 20a provided on the top surface of the main body 20. In this embodiment, the case 10 is described as being substantially rectangular. Therefore, the main body 20 has four side walls 100. The four side walls 100 include a front wall 101, a rear wall 102, a right wall 103, and a left wall 104. The bottom wall 106 and the four side walls 100 are each made of a thin plate member. As a result, the main body 20 is made up of a bottom wall 106, a front wall 101, a rear wall 102, a right wall 103, and a left wall 104, and has an opening 20a formed on the top surface.

[0011] Furthermore, the main body 20 is provided with a lid 105 that can close the opening 20a on the top surface. The lid 105 is rotatably attached to the upper end of the rear wall 102 of the main body 20 by a hinge or the like. Therefore, when an operator stores a work machine 60 (see FIG. 10 described later) or the like inside or removes the work machine 60 from inside, the operator rotates the lid 105 to the open state as shown in FIG. 8.

[0012] The main body 20 also has corners 110 that connect adjacent ones of the four side walls 100. Specifically, the main body 20 has the corners 110: a first corner 111, a second corner 112, a third corner 113, and a fourth corner 114. The first corner 111 connects the front wall 101 and the right wall 103, and the second corner 112 connects the front wall 101 and the left wall 104. Furthermore, the third corner 113 connects the rear wall 102 and the right wall 103, and the fourth corner 114 connects the rear wall 102 and the left wall 104.

[0013] Because the case 10 of this embodiment is relatively large, it is provided with tires for rolling during transportation so that it can be towed while being transported. Specifically, as shown in FIGS. 4 to 7 , the case 10 has a right tire 70 rotatably mounted along the right wall 103 and a left tire 80 rotatably mounted along the left wall 104. Each tire has a portion that protrudes rearward from the rear wall 102, as shown in FIGS. 6 and 7 , to prevent the main body 20 from rubbing against the ground when the case 10 is towed while being transported. In other words, when an operator pulls the case 10 while transporting it, the main body 20 becomes tilted. Since a portion of each of the right tire 70 and the left tire 80 protrudes rearward from the rear wall 102, it is possible to prevent the lower portion of the rear wall 102 from rubbing against the ground.

[0014] Furthermore, the case 10 is provided with a retractable main handle 30 that can be pulled during transport. The main handle 30 is attached to the rear wall 102 and is retractable. Therefore, when pulling it for transport or the like, the main handle 30 can be pulled upward. On the other hand, when not in use, the main handle 30 can be retracted and stored to such an extent that it does not protrude above the lid portion 105.

[0015] 1 and 2, a front bar 101a is provided on the front wall 101. The front bar 101a is provided along the left-right direction at the bottom of the front wall 101. The front bar 101a is used, for example, when pulling out the case 10 mounted on a loading platform 170 (see FIG. 26 described later) of a truck or the like.

[0016] 1 and 3, a foldable top handle 105a is attached to the lid 105. The top handle 105a is used by lifting the case 10. When not in use, it can be folded down and stored so that it does not protrude from the lid 105.

[0017] 1 and 6, a foldable side handle 103a is attached to the right wall 103. Meanwhile, as shown in FIG. 7, a foldable side handle 104a is also attached to the left wall 104. The side handles 103a, 104a are used by lifting the case 10 for carrying or pulling it out laterally. That is, when carrying a heavy case 10, the handles are grasped on both sides. Or, when pulling the case 10 out laterally, the handles are grasped and pulled out. When not in use, the side handles can be folded down and stored so that they do not protrude from the right wall 103 or the left wall 104.

[0018] 1 and 2, the front wall 101 is provided with latches 40. The latches 40 are attached to the right and left sides of the upper end of the front wall 101 so as to open and close in the vertical direction. Meanwhile, the right and left sides of the front end of the lid 105 are provided with recessed engagement portions 105b that can engage with the latches 40. This allows the closed lid 105 to be locked by rotating the latch 40 and fitting it into the engagement portion 105b. Furthermore, the lock can be released by rotating the latch 40 downward to disengage it from the engagement portion 105b, allowing the lid 105 to be opened.

[0019] 1 and 3, rotatable connecting hinges 50 are attached to the left and right ends of the lid 105. The case 10 is configured to be stackable with other cases of a predetermined shape. When another case is stacked on top of the case 10, the connecting hinges 50 can engage with protruding connecting portions 130a, 140a (see FIGS. 21 and 22, described below) provided on the bottom wall 106 of the upper case. By fitting the connecting hinges 50 into the connecting portions 130a, 140a, the cases can be fixed together so that the upper case does not move when stacked.

[0020] As shown in FIGS. 1 to 8 , the case 10 of this embodiment is provided with hooking bars 120 as hooking portions at each of the four corners 110. The hooking bars 120 are columnar metal members (bars) extending in a direction intersecting the vertical direction. Specifically, as shown in FIG. 9 described later, the hooking bars 120 are formed of flat metal plate-like members. More specifically, the hooking bars 120 are flat metal plate-like members whose vertical width D1 is greater than their thickness D2, and have flat surfaces 120a (see FIG. 16 ). As shown in FIG. 11 described later, the hooking bars 120 are members that can support a work machine 60 or an accessory of the work machine 60 by hooking the hooks 60a onto the work machine 60 or an accessory of the work machine 60. The hooking bar 120 is a flat metal member to increase its strength, but it may be made of a different material such as resin or have a different shape, such as a pin with a circular cross section, to further reduce its mass or make it easier to manufacture.

[0021] In the case 10, the hooking bar 120 as described above is provided at each of the four corners 110. Specifically, the hooking bar 120 includes a first hooking bar (first hook portion) 121 provided at the first corner 111 and extending in a direction intersecting the up-down direction, and a second hooking bar (second hook portion) 122 provided at the second corner 112 and extending in a direction intersecting the up-down direction. Furthermore, the hooking bar 120 includes a third hooking bar (third hook portion) 123 provided at the third corner 113 and extending in a direction intersecting the up-down direction, and a fourth hooking bar (fourth hook portion) 124 provided at the fourth corner 114 and extending in a direction intersecting the up-down direction.

[0022] As shown in Fig. 3 , each hooking bar 120 is disposed at a position that does not overlap with the cover portion 105 when viewed in the up-down direction. Specifically, the hooking bars 120 are supported at each corner 110 by ribs 107 that protrude from the main body portion 20 in Fig. 1 . Each hooking bar 120 is supported by the ribs 107 so that a gap 90 is formed between the main body portion 20 and the hooking bar 120. As a result, when viewed in the up-down direction of the main body portion 20, the hooking bar 120 is disposed along the surface of the corner portion 110 at a position that protrudes outward from the outline of the main body portion 20. Because the gap 90 is formed between the main body portion 20 and the hooking bar 120 in this manner, a hook 60a of the work machine 60 or the like can be hooked onto the hooking bar 120.

[0023] Furthermore, the hooking bars 120 are provided at the upper and lower portions 110a and 110b of the corners 110 of the main body 20. Specifically, in the case 10, the hooking bars 120 are provided at the upper and lower portions 110a and 110b of the first and second corners 111 and 112 facing the front wall 101, respectively, as shown in Figures 1 and 2. On the other hand, as shown in Figures 5 to 7, the right tire 70 and the left tire 80 are located at the third and fourth corners 113 and 114 facing the rear wall 102, and therefore the hooking bars 120 are provided only at the upper portion 110a. As a result, the case 10 is provided with hooking bars 120 at six locations.

[0024] Next, a method for attaching the hooking bar 120 will be described. As shown in FIG. 9 , the hooking bar 120 is supported by two ribs 107 provided at corners 110 of the main body 20. The two ribs 107 protrude outward from the main body 20 at the corners 110. Each of the ribs 107 has a notch 107a, and the hooking bar 120 is positioned by fitting into the notch 107a. The hooking bar 120 is then fixed to the ribs 107 by a bridge member 108 that fits into the ribs 107. Specifically, the hooking bar 120 is fixed to the ribs 107 by screwing the ribs 107 and the bridge member 108 together with a screw member 109. Note that, as shown in FIG. 3 , the screw member 109 is hidden by the lid 105 when viewed from above and below when the opening 20a on the top surface of the main body 20 shown in FIG. 8 is closed by the lid 105. In other words, when the lid 105 is closed, the screw member 109 is hidden by the lid 105 and cannot be seen even when viewed from above. This improves the appearance of the case 10.

[0025] Furthermore, as shown in Figure 9, the hooking bar 120, which is formed in a ring shape from a metal plate-like member, has a reinforcing bar 120b provided inside, which increases its load-bearing capacity and will not collapse even if a work machine 60 with a heavy load is hooked onto it.

[0026] In the case 10 of this embodiment, a hooking bar 120 is provided at a corner 110 of the main body 20, and the hooking bar 120 is positioned so as not to overlap the lid 105 when viewed in the vertical direction, i.e., so as to protrude outward from the outline of the main body 20. Furthermore, a gap 90 is formed between the main body 20 and the hooking bar 120. As shown in FIG. 11 , by hooking a hook 60 a on the hooking bar 120, it is possible to hook a work machine 60 or an accessory of the work machine 60 on the hooking bar 120, as shown in FIG. 10 . Furthermore, as the hooking bar 120 is formed in a flat plate shape with a width D1 in the vertical direction greater than a thickness D2 in the thickness direction (see FIG. 16 ), the hook 60 a is prevented from rotating around the hooking bar 120.

[0027] Therefore, the case 10 can easily support the work implement 60 and its accessories on the main body 20 of the case 10 without opening or closing the lid 105. As a result, the workability of the case 10 can be improved. Furthermore, as shown in FIG. 11 , the hooking bars 120 are provided at the corners 110 of the main body 20 and positioned so as to protrude from the main body 20. For example, at the first corner 111, the first hooking bar 121 is located outside the imaginary line M1 connecting the right end 101b of the front wall 101 and the front end 103b of the right wall 103 when viewed from the up-down direction. This also applies to the second hooking bar 122 at the second corner 112, the third hooking bar 123 at the third corner 113, and the fourth hooking bar 124 at the fourth corner 114. Therefore, a wide hooking space of angle θ1.270° can be secured at each corner 110. This reduces restrictions on the size and shape of the work machine 60 and its accessories, allowing various items to be hung on the hooking bar 120, thereby improving the workability of the case 10.

[0028] Next, another example of use of the case 10 will be described. As shown in FIGS. 12 and 13 , a hooking plate (retrofit hooking portion) 125 can be attached to the hooking bar 120, bridging and hooking onto the hooking bars 120 provided at adjacent corners 110 among the multiple corners 110. The hooking plate 125 is formed from a long, thin metal plate and has a shape that allows it to bridge and hook onto, for example, the first hooking bar 121 at the first corner 111 and the third hooking bar 123 at the third corner 113. Specifically, as shown in FIGS. 14 and 15 , the hooking plate 125 is formed by bending a metal plate, and as shown in FIG. 14 , the shape of the plate body 125 a is formed to conform to the first corner 111, the right wall 103, and the third corner 113. Hook portions 125b that can be hooked onto the hooking bars 120 are formed on both ends of the plate body 125a, and by hooking the hook portions 125b on both ends onto the hooking bars 120, the hooking plate 125 can be attached by bridging the hooking bars 120 provided on adjacent corner portions 110.

[0029] 15 and 16 , the hook portion 125b of the hooking plate 125 includes a U-shaped portion 125c that hooks onto the hooking bar 120, and a barbed portion (protrusion) 125d that extends downward from the U-shaped portion 125c and protrudes toward the inside of the U-shaped portion 125c so as to be able to abut against the hooking bar 120. That is, the hook portion 125b includes the U-shaped portion 125c and the barbed portion 125d. The provision of the barbed portion 125d on the hook portion 125b of the hooking plate 125 allows the hook portion 125b to be positioned when fitted onto the hooking bar 120 from above, and also makes it difficult for the hook portion 125b to come off upward.

[0030] Here, Figure 17 shows a structure in which a work implement 60 is hooked onto the hooking plate 125. When the hooking plate 125 is attached to the hooking bar 120 of the main body 20, the gap 91 (see Figure 13) between the plate body 125a of the hooking plate 125 and the main body 20 has, for example, a width D3 of 20 mm and a length D4 of 100 mm. However, the width D3 may be 5 mm or more and 30 mm or less, and the length D4 may be 20 mm or more and 150 mm or less, which makes it possible to hook the work implement 60 onto the hooking plate 125 attached to the main body 20. Furthermore, when the work implement 60 is hooked onto the plate body 125a of the hooking plate 125, a downward load is applied to the plate body 125a, causing the entire hooking plate 125 to rotate clockwise in Figure 16 around the hooking bar 120. However, in this case, the hooking plate 125 abuts against the rib 107 of the main body 20 (contact portion P1 in FIG. 13 ), preventing the hooking plate 125 from rotating clockwise and making it difficult for the hooked work implement 60 to come off. Furthermore, if an upward load is applied to the plate body 125a when removing the work implement 60 from the hooking plate 125, the entire hooking plate 125 will attempt to rotate counterclockwise in FIG. 16 around the hooking bar 120. In this case, part of the U-shaped portion 125c abuts against the surface of the corner 110 of the main body 20, and the barbed portion 125d abuts against and catches on the lower end of the hooking bar 120, reducing the possibility of the hooking plate 125 twisting outward due to the weight of the work implement 60. In other words, the hooking plate 125 can be prevented from moving upward relative to the hooking bar 120 and falling off.

[0031] 13 and 14, the hooking plate 125 has a partition portion 125e that partitions the hooking plate 125 in the direction of extension of the hooking plate 125 (the direction along the front-to-rear direction in the case 10 of FIG. 13) and protrudes toward the main body 20 of the case 10 of FIG. 1. Specifically, as shown in FIG. 13, the partition portion 125e protrudes toward the main body 20 and is configured to abut against the main body 20 when attached to the hooking bar 120 (abutment portion P2). Therefore, even when a load is applied to the hooking plate 125 from the outside, the partition portion 125e abuts against the main body 20, thereby preventing the hooking plate 125 from breaking or deforming. The partition portion 125e also has an insertion hole 125f that allows a thin tool such as a screwdriver 173 to be inserted therethrough, as shown in FIG. 27.

[0032] In the present embodiment, the hooking plate 125 is provided with partitions 125e at three locations at desired intervals along the extension direction of the plate body 125a of the hooking plate 125. This allows the work implement 60 and its accessories to be separately hooked to the hooking plate 125. For example, when the case 10 shown in FIG. 12 is transported by pulling the main handle 30, the case 10 tilts. In this case, the work implement 60 and its accessories are hooked to the hooking plate 125 at locations separated by the partitions 125e. Therefore, even if the case 10 tilts and the hooking plate 125 becomes slanted, the work implement 60 and its accessories are prevented from shifting to one side and are less likely to slip off. This allows the work implement 60 and its accessories to be attached more stably to the hooking plate 125. Furthermore, by attaching the hooking plate 125 to the case 10, the flexibility of which work implement 60 or its accessories can be hooked to the hooking plate 125 increases, allowing the work implement 60 or its accessories to be hooked according to the work application. This makes it easy to change the layout of the tools and implements to be hooked. Note that the side handles 103a, 104a can be used on the case 10 even when the hooking plate 125 is attached. Note that the hooking plate 125 is not limited to a long, thin metal plate, but may also be made of resin, and may have a box-shaped storage section for storing the work implement 60 and its accessories.

[0033] Next, another example of how the hooking bar 120 can be used will be described. FIG. 18 shows a structure in which a front hooking plate (rear-mounted hooking portion) 126 is attached to the hooking bar 120 in the case 10. Specifically, the front hooking plate 126 is attached by hooking the hook portions 126a at both ends to the hooking bar 120 at the upper portion 110a of the first corner 111 on the front side and the hooking bar 120 at the upper portion 110a of the second corner 112. This allows the front hooking plate 126 to be used to hook and support the work machine 60 and its accessories shown in FIG. 17 . The front hooking plate 126 also has partitions 126b at multiple locations, which provide the same effect as the partitions 125e of the hooking plate 125.

[0034] 19 is a diagram showing a structure in which a vertical hooking plate (rear-mounted hooking portion) 127 is attached to the hooking bar 120 in the case 10. Specifically, the vertical hooking plate 127 is attached in the vertical direction by hooking the hook portions 127a at both ends to the hooking bar 120 at the upper portion 110a of the first corner 111 on the front side and the hooking bar 120 at the lower portion 110b of the first corner 111. This allows the vertical hooking plate 127 to support even more implements 60 and can also be used as a bumper to protect the corner 110. To increase the strength of the vertical hooking plate 127 when used as a bumper, a cushioning protective member such as an elastic material may be provided on the surface of the vertical hooking plate 127.

[0035] 20 is a diagram showing a structure in which an external hooking plate (rear-attached hooking portion) 128 is attached to the vertical hooking plate 127 shown in FIG. 19. That is, the external hooking plate 128 is attached in the left-right direction by hooking the hook portions 128a at both ends onto the vertical hooking plate 127 attached to the first corner 111 and the vertical hooking plate 127 attached to the second corner 112. This allows the work machine 60 shown in FIG. 17 and its accessories to be hooked onto the external hooking plate 128 for support.

[0036] Next, a modification of this embodiment will be described. A case 130 of a first modification shown in FIG. 21 has a structure that is shorter in the vertical direction than the case 10 shown in FIG. 1 . Therefore, the case 130 does not have the retractable main handle 30 on the rear wall 102 side, the right tire 70, or the left tire 80 that are provided on the case 10 shown in FIG. 1 . However, hooking bars 120 are provided on the upper and lower parts 110a and 110b of each of the four corners 110: the first corner 111, the second corner 112, the third corner 113, and the fourth corner 114. That is, the case 130 has a hooking bar 120 provided on the upper and lower sides of each of the four corners 110, for a total of eight hooking bars 120. Therefore, a work implement 60 or its accessories can be hooked onto the hooking bar 120 provided on any of the corners 110.

[0037] Furthermore, by hooking the hook portions 125b and 126a onto the hooking bars 120 at the corners 110, it is possible to attach the hooking plates 125 and front hooking plates 126 to the front wall 101, rear wall 102, right wall 103, and left wall 104, and it is also possible to attach vertical hooking plates 127 to each corner 110. This allows the work machine 60 and its accessories to be hooked onto the hooking bars 120, hooking plates 125, and front hooking plates 126 and supported, just like the case 10.

[0038] The case 130 is provided with a protruding connecting portion 130a on the bottom wall 106. This allows the case 130 to be stacked on the case 10 shown in FIG.

[0039] Furthermore, the case 140 of the second modified example shown in Fig. 22 has a structure in which its vertical height is even lower than that of the case 130 shown in Fig. 21. Therefore, the case 140 also does not have the retractable main handle 30 on the rear wall 102 side, the right tire 70, or the left tire 80 that are provided on the case 10 of Fig. 1. Furthermore, because of its low vertical height, one hooking bar 120 is provided at each of the four corners 110: the first corner 111, the second corner 112, the third corner 113, and the fourth corner 114. That is, the case 140 has one hooking bar 120 provided at each of the four corners 110, for a total of four hooking bars 120.

[0040] Therefore, by hooking the hook portions 125b and 126a onto the hooking bars 120 at the corners 110, it is possible to attach the hooking plates 125 and the front hooking plates 126 to the front wall 101, rear wall 102, right wall 103, and left wall 104. This allows the hooking bars 120, hooking plates 125, and front hooking plates 126 to be hooked and supported with the work machine 60 and its accessories, just like the case 10.

[0041] A front handle 140b is provided on the front wall 101 of the case 140. This allows the case 140 to be carried by gripping the front handle 140b when handling it, and also allows the case 140 to be pulled out by gripping the front handle 140b when it is mounted on a loading platform 170 (see FIG. 26) of a truck or the like.

[0042] The case 140 also has a protruding connecting portion 140a at the bottom of the side wall 100. This allows the case 140 to be stacked on the case 10 shown in FIG. 20 or the case 130 shown in FIG.

[0043] The third modified example shown in Fig. 23 shows an example of a stack structure, in which case 10 shown in Fig. 1 is placed in the lowest tier, case 130 shown in Fig. 21 is stacked in the second tier above that, and case 140 shown in Fig. 22 is stacked in the third tier above that, forming a stack structure.

[0044] A connecting hinge 50 is provided on the lid portion 105 of each of the cases 10, 130, 140. Furthermore, protruding connecting portions 130a, 140a are provided on the lower portion of the side wall 100 of each of the stacked cases 130, 140. Therefore, by engaging the connecting portions 130a, 140a of the upper cases 130, 140 with the connecting hinges 50 of the lower cases 10, 130, 140 (fitting the connecting hinges 50 on the lower cases into the connecting portions 130a, 140a on the upper cases), the cases can be fixed together so that the upper cases 130, 140 do not move when stacked.

[0045] 23, the work machine 60 and its accessories can be hooked and supported on the hooking bars 120 provided on each of the cases 10, 130, 140. Furthermore, hooking plates 125 and front hooking plates 126 can be attached to the hooking bars 120 provided on the corners 110 of each of the cases 10, 130, 140, and the work machine 60 and its accessories can be hooked and supported on these hooking plates 125 and front hooking plates 126.

[0046] Furthermore, a vertical hooking plate 127 can be attached to the cases 10 and 130, thereby increasing the strength of the cases 10 and 130 in the vertical direction.

[0047] Furthermore, case 10 is placed at the bottom of the stack structure, and case 10 is provided with an extendable main handle 30 on the rear wall 102 side, a right tire 70, and a left tire 80. Therefore, even in a three-tier stack structure, for example, an operator can transport cases 10, 130, and 140 by pulling the extended main handle 30.

[0048] 24 shows a stack structure in which a rope 150 is passed through the hooking bar 120 of each of the cases 10, 130, and 140, and both ends of the rope 150 are connected with a lock 151 such as a padlock. The hooking bar 120 has a gap 90 (see FIG. 3 ) on the lower side between it and the main body 20, so the rope 150 can be passed from top to bottom of the hooking bar 120. As a result, the three stacked cases 10, 130, and 140 are connected with the rope 150, and the rope 150 is locked with the lock 151, so theft of the stacked cases 10, 130, and 140 can be prevented.

[0049] 25 shows a stack structure in which a cargo 160 is placed on the top case 140 of stacked cases 10, 130, and 140 and secured to the case 140. Specifically, the cargo 160 is placed on the lid 105 of the top case 140, and rubber bands 161 are hooked between the hooking bars 120 of the diagonally arranged cases 140, and the cargo 160 is secured to the case 140 by the rubber bands 161 running diagonally. This allows an operator to transport the cases 10, 130, and 140 and the cargo 160 by pulling the main handle 30, with the cargo 160 secured to the top case 140 of the three-tiered stacked cases 10, 130, and 140.

[0050] 26 shows a stack structure in which cases 10, 130, and 140 stacked in three layers are secured to, for example, the bed 170 of a truck by belts 171. Specifically, the belts 171 are fastened to four hooking bars 120 on the top case 140, and these four belts 171 are connected to hooks 172 on the bed 170. In this way, the hooking bars 120 are also suitable for belt fastening, and this allows the three-layered cases 10, 130, and 140 to be transported while firmly secured to the bed 170 of a truck.

[0051] 27 has a hooking plate 125 attached to the hooking bar 120 of the uppermost case 140, and a long object such as a screwdriver 173 or a tool such as a wide ruler 174 can be inserted and supported in a gap 91 (see FIG. 13) between the hooking plate 125 and the main body 20. For example, the gap 91 is about 20 mm, which is a suitable size for inserting or hooking on tools such as the screwdriver 173 and ruler 174 that are frequently used by workers.

[0052] Next, the fourth modified example shown in Figure 28 illustrates a case 180 in which hooking bars 120 are provided in three tiers, namely, upper, middle, and lower tiers, at the first corner 111 and the second corner 112. That is, in the case 180, hooking bars 120 are provided at the upper tier 110a, the lower tier 110b, and the middle tier 110c between the upper tier 110a and the lower tier 110b at the first corner 111 and the second corner 112. That is, the hooking bars 120 may be provided in two or more tiers at the corners 110 of the main body 20. This allows the attachment of a vertical hooking plate 127 to increase the strength of the case 180 in the vertical direction, and also allows the attachment of a hooking plate 125 together with the vertical hooking plate 127 to hook the work machine 60 and its accessories to the hooking plate 125. The hooking bar 120 may be provided at any corner 110 of the main body 20 .

[0053] Next, the fifth modified example shown in Figure 29 illustrates a modified shape of the hook portion 190a of the hooking plate 125 attached to the hooking bar 120. Specifically, the hook portion 190a has a U-shaped portion 190b that hooks onto the hooking bar 120, and also has a barbed portion (protrusion) 190c that extends downward from the U-shaped portion 190b and protrudes toward the inside of the U-shaped portion 190b so as to be able to abut against the hooking bar 120. Here, the shape of the barbed portion 190c of the hook portion 190a is a shape that follows the recess 120c on the inside of the hooking bar 120 and is a shape that abuts against the recess 120c.

[0054] Therefore, since the return portion 190c abuts against the main body portion 20 and the recess 120c of the hooking bar 120, the hook portion 190a is less likely to come off the hooking bar 120, making it possible to make the hooking plate 125 less likely to come off the hooking bar 120.

[0055] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, in the above-described embodiment, the stack structure is described as being in a three-tiered state, but the number of tiers of stacked cases may be two, or may be three or more.

[0056] Furthermore, the extending direction of the columnar hook portion (hooking bar 120) does not necessarily have to be perpendicular to the up-down direction, as long as it is a direction that intersects with the up-down direction.

[0057] 10...case, 20...main body, 20a...opening, 30...main handle, 40...latch, 50...connecting hinge, 60...work implement, 60a...hook, 70...right tire, 80...left tire, 90, 91...gap, 100...side wall, 101...front wall, 101a...front bar, 101b...right end, 102...rear wall, 103...right wall, 103a...side handle, 103b...front end, 104...left wall, 104a...side handle, 105...lid, 105a...top handle, 105b...engagement portion, 106...bottom wall, 107...rib, 107a...notch, 108...bridge member, 109...screw member, 110...corner, 110a...upper portion, 110b...lower portion, 110c...middle portion, 111...first corner, 112...second corner, 113...third corner, 114...fourth corner, 120...hooking bar (hooking portion), 120a...flat surface, 120b...reinforcing bar, 120c...recess, 121...first hooking bar (first hooking portion), 122...second hooking bar (second hooking portion), 123...third hooking bar (third hooking portion) portion), 124...fourth hooking bar (fourth hooking portion), 125...hooking plate (rear-attached hooking portion), 125a...plate main body, 125b...hook portion, 125c...U-shaped portion, 125d...turned portion (protrusion), 125e...partition portion, 125f...insertion hole, 126...front hooking plate (rear-attached hooking portion), 126a...hook portion, 126b...partition portion, 127...vertical hooking plate (rear-attached hooking portion), 127a...hook portion, 128...external hooking plate (rear-attached hooking portion), 128 a...hook portion, 130...case, 130a...connecting portion, 140...case, 140a...connecting portion, 140b...front handle, 150...rope, 151...lock, 160...luggage, 161...rubber band, 170...cargo bed, 171...belt, 172...hook, 173...driver, 174...ruler, 180...case, 190a...hook portion, 190b...U-shaped portion, 190c...return portion (protrusion), D1...width, D2...thickness, D3...width, D4...length, M1...imaginary line, P1, P2...contact portion, θ1...angle

Claims

1. A box-shaped main body having a plurality of plate-shaped side walls and a bottom wall, a lid portion for covering an opening provided on an upper surface of the main body portion, The side walls include a front wall, a rear wall, a right wall, and a left wall, a plurality of corners, each of which is a ridge line connecting outer edges of two adjacent side walls among the plurality of side walls; a plurality of first plate-shaped portions provided at the corners, extending in an extension direction intersecting with a vertical direction, and having a thickness in the vertical direction and a thickness direction intersecting with the vertical direction and the extension direction that is smaller than a width in the vertical direction, the plurality of first plate-shaped portions having a gap between the main body portion in the thickness direction; a second plate-shaped portion extending along a surface of the side wall so as to connect the first plate-shaped portions to each other.

2. The corner portion is a first corner portion connecting the front wall and the right wall; a second corner portion connecting the front wall and the left wall; a third corner portion connecting the rear wall and the right wall; a fourth corner portion connecting the rear wall and the left wall; Including, The first plate-shaped portion is A first plate-shaped portion is provided at the first corner portion and extends in a direction intersecting the up-down direction; A second first plate-shaped portion is provided at the second corner portion and extends in a direction intersecting the up-down direction; a third first plate-shaped portion provided at the third corner portion and extending in a direction intersecting the up-down direction; a fourth first plate-shaped portion provided at the fourth corner portion and extending in a direction intersecting the up-down direction; The case of claim 1 , comprising:

3. The case according to claim 2 , wherein the first plate-shaped portion is provided outside an imaginary line connecting a right end of the front wall and a front end of the right wall when viewed in the up-down direction.

4. The case according to claim 1 , wherein the plate-like portions are provided at upper and lower portions of the corner portions.

5. The case according to claim 2 , wherein the plate-like portions are provided at an upper portion and a lower portion of each of the first and second corner portions.

6. The case according to claim 1 , wherein the plate-shaped portion is formed of a flat metal member.

7. A box-shaped main body having a plurality of plate-shaped side walls and a bottom wall, a lid portion for covering an opening provided on an upper surface of the main body portion, The side walls include a front wall, a rear wall, a right wall, and a left wall, a plurality of corners, each of which is a ridge line connecting outer edges of two adjacent side walls among the plurality of side walls; A columnar portion provided at the corner portion and extending in a direction intersecting the up-down direction; Equipped with The columnar portion is disposed at a position not overlapping with the lid portion when viewed in the up-down direction, The columnar portions are provided at the corners of the main body portion, The columnar portion is capable of receiving a retrofit hook portion that bridges and hooks onto the columnar portions provided at adjacent corners among the plurality of corners.

8. The case described in claim 7, wherein the rear-attached hook portion has a U-shaped portion that is hooked onto the columnar portion, and also has a protrusion that extends downward from the U-shaped portion and protrudes toward the inside of the U-shaped portion so as to abut against the columnar portion.

9. a right tire having a portion protruding rearward from the rear wall and rotatably disposed along the right wall; a left tire having a portion protruding rearward from the rear wall and rotatably disposed along the left wall; Equipped with The case according to claim 7 , wherein the rear-attached hook portion has a partition portion that divides the rear-attached hook portion in an extending direction of the rear-attached hook portion and that protrudes toward the main body portion.

10. A box-shaped main body having a plurality of plate-shaped side walls and a bottom wall; a lid portion for covering an opening provided on an upper surface of the main body portion, The side walls include a front wall, a rear wall, a right wall, and a left wall, a plurality of corners, each of which is a ridge line connecting outer edges of two adjacent side walls among the plurality of side walls; A columnar portion provided at the corner portion and extending in a direction intersecting the up-down direction; Equipped with The columnar portion is disposed at a position not overlapping with the lid portion when viewed in the up-down direction, A rib is provided at the corner portion, the rib protruding outward from the main body portion and including a notch, The columnar portion is fitted into the notch, The columnar portion is fixed to the rib by a fitting member that fits into the rib.

11. The columnar portion is fixed to the rib by screwing the rib and the fitting member together with a screw member, The case according to claim 10 , wherein the screw member is hidden by the lid when viewed from above and below in a state in which an opening on an upper surface of the main body is closed by the lid.

12. A box-shaped main body having a plurality of plate-shaped side walls and a bottom wall; a lid portion for covering an opening provided on an upper surface of the main body portion, The side walls include a front wall, a rear wall, a right wall, and a left wall, a plurality of corners, each of which is a ridge line connecting outer edges of two adjacent side walls among the plurality of side walls; A columnar portion provided at the corner portion and extending in a direction intersecting the up-down direction; Equipped with A case in which the columnar portions are provided at two corners that are diagonally opposite each other when viewed in the up-down direction of the main body portion.

13. The main body portion has a connecting portion on a lower side that can be connected to another case, The case according to claim 12 , wherein the cover portion has a connected portion that can be fitted with a connecting portion of another case.