Caster-fitted storage box

Abstract

To provide a caster-fitted storage box which can secure satisfactory storageability even if large diameter casters are adopted, and in which a storage body can exhibit high strength.SOLUTION: In a caster-fitted storage box, the bottom four corner parts of a storage body 1 are provided with caster cover parts 3, casters 2 are disposed at the inside of the caster cover parts 3 in a state where an upper half is stored and a lower half is exposed to the lower part of a bottom part in the storage body 1, the internal bottom part of the storage body 1 is formed into a flat bottom face 4, a circumferential part of the flat bottom face 4 is provided with a groove-shaped recessed part 5 recessed downward from the flat bottom face 4, the storage body 1 is integrally molded into a shape in which the flat bottom face 4 and a wall part 6 are connected via the groove-shaped recessed part 5, and the cast cover parts 3 are disposed at the inside of the groove-shaped recessed part 5 in a state of not being projected to a part upper than the flat bottom face 4.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a storage box with casters for easy movement. [Background technology]

[0002] 2. Description of the Related Art Conventionally, storage boxes made of synthetic resin have been used to conveniently store clothes, small items, and the like.

[0003] Furthermore, some storage boxes of this type are equipped with casters on the four corners of the bottom for easy movement (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Design Registration No. 1448787 Summary of the Invention [Problem to be solved by the invention]

[0005] Storage boxes with casters are popular because larger diameter wheels make them easier to move. However, when the diameter of the casters is increased, the caster cover (wheel housing) that houses the wheels protrudes farther inward from the bottom and side walls of the box. For example, if you want to store a large number of CD and DVD cases, the protruding caster cover gets in the way, making it impossible to store them in an orderly manner, resulting in a decrease in storage efficiency.

[0006] The present invention focuses on the problems associated with such storage boxes with casters and seeks to solve these problems by providing a storage box with casters that, even when large diameter casters are used, ensures good storage capacity without the caster cover portion protruding inward from the internal bottom and side walls of the storage body, and furthermore reinforces the storage body to provide high strength. [Means for solving the problem]

[0007] The gist of the present invention will now be described with reference to the accompanying drawings.

[0008] A storage box with casters, in which caster cover parts 3 are provided at the four corners of the bottom of a box-shaped storage body 1 made of synthetic resin, casters 2 are arranged with their upper halves stored in the caster cover parts 3 and their lower halves exposed below the bottom of the storage body 1, and the casters 2 are rotatably provided at the four corners of the bottom of the storage body 1, The storage body 1 has an inner bottom surrounded by a wall portion 6 and formed into a flat bottom surface 4, A recess 5 is provided on the side or periphery of the flat bottom surface 4, recessed downward from the flat bottom surface 4, and the storage body 1 is integrally molded in such a shape that the flat bottom surface 4 and the wall portion 6 are connected via the recess 5, and the recess 5 is configured as a groove-like recess 5 having a length along the side or periphery of the flat bottom surface 4, This storage box with casters is characterized in that the caster cover parts 3 are arranged within this groove-shaped recess 5 at positions corresponding to the four corners of the bottom of the storage body 1 without protruding above the flat bottom surface 4.

[0009] The storage body 1 relates to a storage box with casters as described in claim 1, characterized in that the lower end of the wall portion 6 is positioned at a position at least equal to the lower end of the upper half of the caster 2, or positioned lower than the lower end of the upper half of the caster 2, and is configured so that the lower end of the wall portion 6 is disposed close to the ground surface when the caster 2 contacts the ground surface.

[0010] The storage box with casters described in claim 1 is characterized in that the groove-like recess 5 is provided around the entire circumference of the flat bottom surface 4, and is formed in a shape that connects this groove-like recess 5 to the entire circumference of the lower end of the wall portion 6. Effect of the Invention

[0011] Because the present invention is configured as described above, even if large diameter casters that are easy to move are used, the caster cover portion in which the upper half of the caster is stored is located within a recess provided on the edge or periphery of the flat bottom surface and does not protrude upward from the flat bottom surface, so the caster cover portion does not get in the way inside the storage body and items can be stored efficiently.Furthermore, since the recess is molded integrally with both the flat bottom surface and the wall portion and is configured as a groove-shaped recess having a length that follows the edge or periphery of the flat bottom surface, both the flat bottom surface and the wall portion are reinforced by the recess, resulting in a storage body that exhibits high strength and is less likely to deform, making it an extremely practical storage box with casters.

[0012] In addition, in the invention described in claim 2, the lower end of the wall of the storage body is positioned at the same position as the lower end of the upper half of the caster, or at a lower position than the lower end of the upper half of the caster, and is configured so that the lower end of the wall is disposed close to the ground surface when the caster touches the ground surface. Therefore, there is a small gap between the lower end of the wall and the ground surface, making it more practical for dust and other debris to get under the storage body.

[0013] In addition, in the invention described in claim 3, the flat bottom surface and the wall portion are reinforced all around by the recesses, increasing the strength of the storage body, making the storage box with casters even more practical. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing the present embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a perspective view showing the present embodiment from below. [Figure 4] FIG. 2 is a perspective view showing the present embodiment with the lid removed. [Diagram 5] FIG. 2 is a partially enlarged cross-sectional side view showing the present embodiment. [Figure 6]FIG. 2 is an enlarged perspective sectional view showing the present embodiment with the lid removed. [Figure 7] FIG. 13 is a perspective view showing the state in which the present embodiment is used in combination with another storage box. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] BEST MODE FOR CARRYING OUT THE PRESENT DISCLOSURE The preferred embodiment of the present invention will be briefly described with reference to the accompanying drawings, which show the operation of the present invention.

[0016] The storage box with casters of the present invention has caster cover parts 3 provided at the four corners of the bottom of a box-shaped storage body 1 made of synthetic resin, and casters 2 arranged with their upper half stored within the caster cover parts 3 and their lower half hanging down and exposed, and these casters 2 are rotatably provided at the four corners of the bottom of the storage body 1. In other words, the storage box with casters of the present invention can be freely moved by the user via the casters 2.

[0017] In addition, the storage body 1 of the present invention has an inner bottom surrounded by a wall portion 6 formed as a flat bottom surface 4, and a recess 5 recessed downward from the flat bottom surface 4 is provided between the side or peripheral portion of this flat bottom surface 4 and the wall portion 6, and is integrally molded in a shape in which the flat bottom surface 4 and the wall portion 6 are connected via this recess 5, and this recess 5 is configured as a groove-shaped recess 5 having a length along the side or peripheral portion of the flat bottom surface 4, and the caster cover portion 3 is arranged within this recess 5 so as not to protrude above the flat bottom surface 4.

[0018] Therefore, even if large-diameter casters 2 that are easy to move are used, the caster cover parts 3 in which the upper halves of the casters 2 are stored are located within the recesses 5 and do not protrude above the flat bottom surface 4, so that the caster cover parts 3 do not get in the way when placing and storing items on the flat bottom surface 4.

[0019] Therefore, it is easy to employ large-diameter casters 2 that are easy to move, and even if one wishes to store a large number of items such as CD or DVD cases in the storage body 1, they can be lined up orderly on the flat bottom surface 4 and efficiently stored in the storage body 1 regardless of the presence of the caster cover parts 3.

[0020] In addition, the storage body 1 of the present invention exhibits high strength since both the flat bottom surface 4 and the wall portion 6 are reinforced by the groove-like recess 5 having a length along the side or peripheral portion of the flat bottom surface 4.

[0021] Furthermore, for example, the storage body 1 may be configured such that the lower end of the wall 6 is positioned at least at the same position as the lower end of the upper half of the caster 2, or at a lower position than the lower end of the upper half of the caster 2, and the lower end of this wall 6 is disposed close to the ground surface when the caster 2 touches the ground surface.When configured in this manner, the gap between the lower end of the wall 6 and the ground surface is small, making it difficult for debris and the like to enter below the storage body 1 through this small gap. EXAMPLES

[0022] A specific embodiment of the present invention will now be described with reference to the drawings.

[0023] The storage box with casters in this embodiment has caster cover parts 3 provided at the four corners of the bottom of a box-shaped storage body 1 made of synthetic resin, and casters 2 arranged with their upper half stored within this caster cover part 3 and their lower half hanging down and exposed, and these casters 2 are freely rotatably mounted at the four corners of the bottom of the storage body 1.

[0024] 1, the storage body 1 is integrally molded into an open-top box-like body with walls 6 rising from the entire periphery of a flat bottom surface 4 that is generally rectangular in plan view. In other words, this storage body 1 is integrally molded into a shape in which the inner bottom portion is surrounded on all four sides by walls 6 and is formed on the flat bottom surface 4. In the following description of this embodiment, the direction along the long sides of the storage body 1 is defined as the left-right direction, and the direction along the short sides is defined as the front-rear direction.

[0025] In addition, a recess 5 is provided around the entire periphery of the flat bottom surface 4, which is recessed downward from the flat bottom surface 4, and the flat bottom surface 4 and the entire periphery of the lower end of the wall portion 6 are connected to each other via the recess 5. The storage body 1 is integrally molded (see Figs. 4 and 6). In other words, the recess 5 is configured as a groove-like recess 5 having an annular shape in a plan view and a length along the circumferential direction of the wall portion 6. Although not shown, the groove-like recess 5 may be provided only on a pair of front and rear long sides of the flat bottom surface 4, or may be provided only on a pair of left and right short sides.

[0026] Within this annular groove-like recess 5, within both left and right ends of the portion corresponding to the front and rear long sides (at positions corresponding to the four corners of the bottom of the storage body 1), the caster cover portions 3 are provided (integrally molded) in a state where they do not protrude upward from the flat bottom surface 4 (see Figures 4 to 6), and have a semicircular recessed shape extending upward when viewed from the front and rear, with the caster cover portions 3 located on the front side of the storage body 1 opening in a semicircular shape at the front and the caster cover portions 3 located on the rear side of the storage body 1 opening in a semicircular shape at the rear (see Figures 4 to 6).

[0027] The casters 2 are arranged in the caster cover portion 3 thus constructed with the upper half stored and the lower half hanging down and exposed, and the casters 2 are arranged so that the axial direction of their rotation shafts 11 coincides with the front-to-rear direction of the storage body 1, and are provided at the four corners of the bottom of the storage body 1 so as to be freely rotatable.

[0028] More specifically, a pair of thin plate-like bearing pieces 9 are integrally molded in a hanging manner below each of the four caster cover parts 3, facing each other in the front-rear direction of the storage body 1 with a small gap between them, and the casters 2 are rotatably supported between the pair of bearing pieces 9. That is, the casters 2 are rotatably provided at the four corners of the bottom of the storage body 1 via the bearing pieces 9, and the storage body 1 is configured to be movable in the left-right direction (the length direction of the long sides of the storage body 1) via the four casters 2.

[0029] The casters 2 employed in this embodiment are equipped with wheels 10 of a relatively large diameter that are easy to move. That is, the caster cover part 3 capable of storing the upper half of the large diameter caster 2 (wheel 10) and having a shape that does not protrude upward from the flat bottom surface 4 is provided in the groove-like recess 5. In other words, the storage body 1 is integrally molded in a shape in which the flat bottom surface 4 is raised so that the caster cover part 3 capable of storing the upper half of such large diameter caster 2 (wheel 10) fits into the groove-like recess 5.

[0030] To explain the casters 2 in more detail, the rotating shafts 11 protrude from both sides of the center of the wheels 10, and the rotating shafts 11 on both sides are rotatably supported by the pair of bearing pieces 9, while a disk-shaped decorative plate 12 is provided at the tip of one of the rotating shafts 11 (see FIG. 5), and the wheels 10 are supported by the bearing pieces 9 so that the decorative plate 12 is located outside (the front and rear sides) of the storage body 1, and thus the decorative plate 12 is disposed at the front opening and the rear opening of each of the caster cover parts 3. In other words, only the decorative plate 12 is visible from the outside of the storage body 1 (the wheels 10 and the bearing parts are not visible), and the structure is configured to provide a good appearance (see FIGS. 1 to 3).

[0031] Furthermore, in this embodiment, the storage body 1 is integrally molded in a shape in which the lower end of the wall portion 6 is positioned at the same position as the lower end of the upper half of the caster 2, and is configured so that when the caster 2 contacts the ground surface, the lower end of the wall portion 6 is disposed close to the ground surface.

[0032] That is, this embodiment is configured so that the gap between the lower end of the wall 6 and the ground surface is small, which makes it difficult for dirt and the like to get into the lower part of the storage body 1 through this small gap, and also provides a stable and good-looking appearance to the storage body 1 without making it look high-waisted. Although not shown, the lower end of the wall 6 may be formed in a shape that is positioned lower than the lower end of the upper half of the caster 2.

[0033] The storage body 1 of this embodiment also includes a cover 13 made of synthetic resin and having a generally rectangular shape in plan view, which closes the upper opening in an openable, detachable manner.

[0034] The structure for opening, closing, attaching and detaching the lid body 13 will be explained. Buckles 14 are rotatably mounted on the upper parts of the left and right wall portions 6 of the storage body 1. When the left and right buckles 14 are rotatably engaged with the left and right portions of the lid body 13 closing the upper opening of the storage body 1, the lid body 13 is held in a closed state. When the left and right buckles 14 are rotatably engaged and detached from the left and right portions of the lid body 13 in this closed state, the lid body 13 can be removed to open the upper opening of the storage body 1.

[0035] In addition, the lid body 13 in the drawing has caster storage recesses 15 (molded integrally) at the four corners of the upper surface that can accommodate approximately the lower half of the caster 2, and is configured so that another storage box with casters can be stacked on top of this lid body 13, which closes the upper opening of the storage body 1.

[0036] In addition, the storage body 1 of this embodiment has a support step 7 formed (integrally molded) around the entire circumference in the vertical middle part of the wall portion 6, and is configured so that the outer bottom peripheral portion of another storage box 8 (for example of a different size) can be placed on this support step 7, making it possible to use it for multi-tiered storage (see Figure 7).

[0037] Incidentally, the present invention is not limited to the present embodiment, and the specific configuration of each component can be designed as appropriate. [Explanation of symbols]

[0038] 1 Storage unit 2 Casters 3 Caster cover 4 flat bottom 5 Recess 6 Wall

Claims

1. A storage box with casters, in which caster cover parts are provided at the four corners of the bottom of a box-shaped storage body made of synthetic resin, casters are arranged with their upper halves housed within the caster cover parts and their lower halves exposed below the bottom of the storage body, and the casters are rotatably provided at the four corners of the bottom of the storage body, The storage body has an inner bottom surrounded by a wall portion and formed into a flat bottom surface, A recess is provided on a side or peripheral portion of the flat bottom surface, recessed downward from the flat bottom surface, and the storage body is integrally molded in a shape in which the flat bottom surface and the wall portion are connected via the recess, and the recess is configured as a groove-like recess having a length along the side or peripheral portion of the flat bottom surface, A storage box with casters is characterized in that the caster cover parts are arranged within this groove-shaped recess at positions corresponding to the four corners of the bottom of the storage body, without protruding above the flat bottom surface.

2. The storage box with casters as described in claim 1, characterized in that the lower end of the wall of the storage body is positioned at a position at least equal to the lower end of the upper half of the caster, or at a position lower than the lower end of the upper half of the caster, and is configured so that the lower end of the wall is disposed close to the ground surface when the caster comes into contact with the ground surface.

3. 2. The storage box with casters according to claim 1, characterized in that the groove-shaped recess is provided around the entire periphery of the flat bottom surface, and is formed in a shape that connects this groove-shaped recess with the entire periphery of the lower end of the wall portion.

Images