WO2020213827A1

WO2020213827A1 - Movable shelf apparatus

Info

Publication number: WO2020213827A1
Application number: PCT/KR2020/002404
Authority: WO
Inventors: 김종희; 윤한주
Original assignee: 김종희
Priority date: 2019-04-18
Filing date: 2020-02-19
Publication date: 2020-10-22
Also published as: KR102066172B1

Abstract

A movable shelf apparatus comprises: lower movable shelves arranged along a first direction; upper movable shelves provided respectively on the lower movable shelves; supporters provided between the lower movable shelves and the upper movable shelves; and step parts provided on the supporters, wherein a lower movable shelf and an upper movable shelf that are immediately adjacent to each other, among the lower movable shelves and the upper movable shelves, are moved together.

Description

Mobile shelf device

The present disclosure relates to a mobile shelving device, and more particularly, to a mobile shelving device having high space efficiency.

A movable shelving device including a movable shelving device or a storage space is a space between the shelf and the shelf when a number of shelves are arranged and various kinds of items including a large number of books, documents, office supplies, and various materials are stored and stored therein. It is constructed so that space can be used efficiently by minimizing the space.

The movable shelving device is composed of a plurality of shelves installed so as to be driven on a rail installed on the floor surface, and as each shelf is moved forward and backward along the rail through a traveling member according to a user's operation, a predetermined amount is provided. As the inside of the shelf is selectively opened, it is configured to store a predetermined item in the shelf or to take out the stored item.

Each shelf constituting the movable shelf device is composed of a frame made of a substantially rectangular frame shape through a plurality of members having a substantially bar shape, and panels are installed on the top and side surfaces of the frame, and the interior thereof A plurality of shelves are stacked and installed to achieve a predetermined interval (height), and configured to store various items on the upper surface thereof.

A handle for operating a traveling member of the shelf or an operation panel for driving a traveling motor is provided on one side of each shelf constituting a manual, automatic, or combined manual movable lathe device, and the handle or operation panel It is made to apply an external force for driving to the shelf through the operation of.

The problem to be solved is to provide a mobile shelving device having high space efficiency.

The problem to be solved is to provide a movable shelf device having high stability.

The problem to be solved is to provide a movable shelf device having high safety.

However, the problem to be solved is not limited to the above disclosure.

In one aspect, lower movable shelves arranged along a first direction; Upper moving shelves provided on the lower moving shelves, respectively; Support portions provided between the lower moving shelves and the upper moving shelves; And step portions provided on the support portions. Including, among the lower moving shelves and the upper moving shelves, a lower moving shelf and an upper moving shelf immediately adjacent to each other may be provided with a moving shelf device that moves together.

First connecting portions arranged in the first direction and in a second direction crossing the first direction between the lower moving shelves and the upper moving shelves; Further comprising, wherein each of the lower moving shelves includes first lower vertical frames extending in a third direction perpendicular to the first direction and the second direction, and the first connecting portions are the first lower vertical frames Each may be provided on the frames.

A width of each of the first connecting portions along the second direction may be smaller than a width of each of the first lower vertical frames along the second direction.

Bottom surfaces of the step portions and upper surfaces of the first lower vertical frames may face each other.

A pair of lower fixed shelves spaced apart from each other along the first direction with the lower moving shelves interposed therebetween; And second connecting portions provided on the pair of lower fixed shelves. Further comprising, wherein each of the pair of lower fixed shelves includes second lower vertical frames extending in the third direction, and the second connecting portions are provided on the second lower vertical frames, respectively, A width of each of the second connection parts along the second direction may be greater than a width of each of the first connection parts along the second direction.

Auxiliary step portions disposed in parallel with the step portions; Further comprising, the auxiliary step portions may pass through the first connection portions.

Top surfaces of the auxiliary step portions and top surfaces of the step portions may be disposed at the same level.

Caster rails provided between the lower moving shelves and the step portions; And casting rollers provided between the caster rail and the lower moving shelves. Further comprising, the casting rollers are rotated, it is possible to move along the caster rail.

A pair of lower fixed shelves spaced apart from each other along the first direction with the lower moving shelves interposed therebetween; It further includes, wherein the support portions are fixed on the fixed shelves, and the lower moving shelves and the upper moving shelves may move independently from the support portions.

Vertical guides provided between the support portions and the lower moving shelves; Further comprising, the vertical guides may support the support portions, thereby preventing the support portions from being bent.

Horizontal guides contacting side surfaces of the support portions; It may further include.

Upper casting rollers provided between the upper moving shelves and the step portions; Further comprising, grooves facing the upper casting rollers are provided on upper portions of the step portions, and the upper casting rollers are rotated to move along the grooves.

In one aspect, lower movable shelves arranged along a first direction; Upper moving shelves provided on the lower moving shelves, respectively; A step portion provided between the lower moving shelves and the upper moving shelves; And at least one lower casting roller provided between the lower moving shelves and the step portion. Including, wherein the lower movable shelves and the upper movable shelves are movable, and among the lower movable shelves and the upper movable shelves, a lower movable shelf and an upper movable shelf immediately adjacent to each other are movable shelf devices that move together Can be provided.

At least one lower caster rail provided between the at least one lower casting roller and the step portion; It further includes, wherein the at least one lower casting roller may be rotated to move along the at least one lower caster rail.

Connection portions provided between the lower moving shelves and the upper moving shelves immediately adjacent to each other among the lower moving shelves and the upper moving shelves; Further comprising, wherein each of the lower moving shelves includes lower vertical frames extending in the third direction, the connection portions are provided on the lower vertical frames, respectively, and the connection portions are higher than the lower vertical frames. It may have small widths along a second direction crossing the first direction.

The step portion may vertically overlap the lower vertical frame.

In one aspect, lower movable shelves arranged along a first direction; Upper moving shelves provided on the lower moving shelves, respectively; And step portions provided between the lower moving shelves and the upper moving shelves. Including, wherein the step portions are arranged along the first direction, the lower moving shelves and the upper moving shelves are movable, and among the lower moving shelves and the upper moving shelves, a lower moving directly adjacent to each other The shelf and the upper moving shelf may be provided with a movable shelf device that moves together.

Each of the step portions is provided between a pair of lower moving shelves immediately adjacent along the first direction, and one end of each of the step portions is fixed on one of the pair of lower moving shelves, The other end of each of the step portions may move on the other one of the pair of lower moving shelves.

When the pair of lower moving shelves are close to each other, each of the step portions is bent, and a length of each of the step portions along the first direction is the first direction of each of the pair of lower moving shelves. Can be longer than the width along the line.

When the pair of lower moving shelves are close to each other, each of the step portions is folded, but the length of each of the step portions along the first direction is the first direction of each of the pair of lower moving shelves Can be longer than the width along the line.

A mobile shelving device with high space efficiency can be provided.

A mobile shelving device with high stability can be provided.

A mobile shelving device with high safety can be provided.

However, the effect of the present invention is not limited to the above disclosure.

1 is a perspective view of a movable shelving device according to exemplary embodiments.

2 is a cross-sectional view taken along line II′ of FIG. 1.

3 is a cross-sectional view taken along line II-II' of FIG. 1.

4 is a plan view of FIG. 1.

5 is a side view of FIG. 1.

6 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to an exemplary embodiment.

7 is an enlarged view of part A of FIG. 6.

FIG. 8 is a cross-sectional view of the mobile shelving device of FIG. 6 taken along line II-II' of FIG. 1.

9 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelf device according to exemplary embodiments.

10 is an enlarged view of part B of FIG. 9.

11 is a cross-sectional view corresponding to line II-II' of FIG. 1 of the mobile shelving device of FIG. 9. 12 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to exemplary embodiments.

FIG. 13 is a cross-sectional view corresponding to line II-II' of FIG. 1 of the mobile shelving device of FIG. 12.

14 is a plan view of the mobile shelving device of FIG. 12;

15 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelf device according to exemplary embodiments.

16 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments.

17 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments.

18 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to exemplary embodiments.

19 is an enlarged view of part C of FIG. 18.

20 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments.

21 is an enlarged view of area D of FIG. 20.

22 is a side view of a movable shelving device according to exemplary embodiments.

23 is a side view for explaining the operation of the movable lathe device of FIG. 22.

24 is a side view for explaining the operation of the movable lathe device of FIG. 22.

25 is a side view of a movable shelving device according to exemplary embodiments.

26 is an enlarged view of the third step portion of FIG. 25.

27 is a side view of a movable shelving device according to example embodiments.

28A and 28B are enlarged views of the fourth step portion of FIG. 27.

29 is a side view of a movable shelving device according to exemplary embodiments.

30 is an enlarged view of a fifth step portion of FIG. 29.

31 is a perspective view of a mobile shelving system according to exemplary embodiments.

32 is a perspective view of a movable shelving system in accordance with example embodiments.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following drawings, the same reference numerals refer to the same elements, and the size of each element in the drawings may be exaggerated for clarity and convenience of description. Meanwhile, the embodiments described below are merely exemplary, and various modifications may be made from these embodiments.

Hereinafter, what is described as "top" or "top" may include not only those directly above by contact, but also those above non-contact.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

In addition, terms such as "... unit" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.

2 is a cross-sectional view taken along line II′ of FIG. 1. 3 is a cross-sectional view taken along line II-II' of FIG. 1. 4 is a plan view of FIG. 1. 5 is a side view of FIG. 1.

1 to 5, a movable type including movable shelves 100, a pair of fixed shelves 200, main rails MR, first step portions 310, and support portions 312 A shelving device 10 may be provided.

The movable shelves 100 may be provided between a pair of fixed shelves 200. The moving shelves 100 may be arranged along the first direction DR1. The moving shelves 100 may be provided on the main rails MR extending along the first direction DR1. The movable shelves 100 may move along the main rails MR. In other words, the moving shelves 100 may move along the first direction DR1. Each of the moving shelves 100 may include a lower moving shelf 110, an upper moving shelf 120, and first connecting parts 130.

The lower moving shelf 110 may include storage areas SR. The storage areas SR may be arranged in the second direction DR2 and the third direction DR3 crossing the first direction DR1 in the lower moving shelf 110. The storage areas SR may have various shapes as needed. The storage areas SR may be configured to accommodate various items (eg, books, documents, and CDs). In example embodiments, the lower moving shelf 110 is a first lower portion connecting the first lower vertical frames 112 and the first lower vertical frames 112 extending along the third direction DR3 It may include horizontal frames 114.

The lower moving shelf 110 may include a moving means (not shown). For example, the moving means may include main rollers (not shown) provided on the bottom surface of the lower moving shelf 110. The main rollers may be provided on the main rails MR. The main rollers are rotated and may move along the main rails MR.

The lower moving shelf 110 may include a control unit for driving the moving means. For example, the control unit may include a drive gear (not shown) and a handle HD connected to the drive gear. For example, the moving means may include main rollers (not shown) provided between the lower moving shelf 110 and the main rails MR. A user (not shown) may turn the handle HD to operate the drive gear connected to the main rollers. The main rollers can be rotated. Accordingly, the lower moving shelf 110 may move along the first direction DR1. In other exemplary embodiments, the control unit may include a switch (not shown) for operating the drive gear instead of or with the handle HD. For example, the switch may be operated to move the lower moving shelf 110.

The upper moving shelf 120 may be provided on the lower moving shelf 110. The upper moving shelf 120 may be spaced apart from the lower moving shelf 110 in the third direction DR3. The upper moving shelf 120 may include storage areas SR. The storage areas SR may be arranged in the second direction DR2 and the third direction DR3 in the upper moving shelf 120. The storage areas SR may be substantially the same as the storage areas SR of the lower moving shelf 110. In example embodiments, the upper moving shelf 120 may have substantially the same shape as the lower moving shelf 110. In example embodiments, the upper moving shelf 120 includes a first upper vertical frame 122 connecting the first upper vertical frames 122 and the first upper vertical frames 122 extending along the third direction DR3. It may include horizontal frames 124. In example embodiments, the first upper vertical frames 122 may completely overlap the first lower vertical frames 112 along the third direction DR3, respectively.

The first connecting parts 130 may be provided between the lower moving shelf 110 and the upper moving shelf 120. The first connection parts 130 may be arranged along the first direction DR1 and the second direction DR2. In example embodiments, the first connection parts 130 may be disposed in regions between the first lower vertical frames 112 and the first upper vertical frames 122, respectively. The first connection parts 130 may extend along the third direction DR3 to connect the first lower vertical frames 112 and the first upper vertical frames 122. The first connecting parts 130 may support the upper moving shelf 120. The first connecting parts 130 may fix the upper moving shelf 120 on the lower moving shelf 110. When the lower moving shelf 110 moves, the upper moving shelf 120 may also move together with the lower moving shelf 110.

The first connector 130 may have substantially the same width as the first lower vertical frame 112 and the first upper vertical frame 122 along the second direction DR2. In one example, the first lower vertical frame 112, the first upper vertical frame 122, and the first connection part 130 therebetween may constitute a single structure. In other words, the first lower vertical frame 112, the first upper vertical frame 122, and the first connection part 130 therebetween may be parts of the frame extending along the third direction DR3. When the first lower vertical frame 112, the first upper vertical frame 122, and the first connection part 130 form a single structure, the first lower vertical frame 112 and the first upper vertical frame 122 A boundary may not be provided between, and the first connection part 130.

Each of the fixed shelves 200 may include a lower fixed shelf 210, an upper fixed shelf 220, and second connecting parts 230. The upper fixed shelf 220 and the second connecting parts 230 may be substantially the same as the upper moving shelf 120 and the first connecting parts 230, respectively. Unlike the lower moving shelf 120, the lower fixed shelf 210 may not include a moving means and a control unit. Accordingly, the fixed shelf 200 may have a fixed position.

The lower fixed shelf 210 may include storage areas SR. The storage areas SR may be arranged in the second direction DR2 and the third direction DR3 in the lower fixed shelf 210. The storage areas SR may be substantially the same as the storage areas SR of the lower moving shelf 110. In example embodiments, the lower fixed shelf 210 is a second lower portion connecting the second lower vertical frames 212 and the second lower vertical frames 212 extending along the third direction DR3 It may include horizontal frames 214.

Unlike the lower moving shelf 110, the lower fixed shelf 210 may not include a control unit and a moving means. The lower fixed shelf 210 may have a fixed position.

The upper fixed shelf 220 may be provided on the lower fixed shelf 210. The upper fixed shelf 220 may be spaced apart from the lower fixed shelf 210 in the third direction DR3. The upper fixed shelf 220 may include storage areas SR. The storage areas SR may be arranged in the second direction DR2 and the third direction DR3 in the upper fixed shelf 220. The storage areas SR may be substantially the same as the storage areas SR of the lower moving shelf 110. In example embodiments, the upper fixed shelf 220 may have substantially the same shape as the lower fixed shelf 210. In example embodiments, the upper fixed shelf 220 is a second upper vertical frame connecting the second upper vertical frames 222 and the second upper vertical frames 222 extending along the third direction DR3 It may include horizontal frames 224. In example embodiments, the second upper vertical frames 222 may completely overlap the second lower vertical frames 212 along the third direction DR3, respectively.

The second connection parts 230 may be provided between the lower fixed shelves 210 and the upper fixed shelves 220. The second connection parts 230 may be arranged with each other along the first direction DR1 and the second direction DR2. In example embodiments, the second connection parts 230 may be disposed in regions between the second lower vertical frames 212 and the second upper vertical frames 222, respectively. The second connection parts 230 may extend along the third direction DR3 to connect the second lower vertical frames 212 and the second upper vertical frames 222. The second connection parts 230 may support the upper fixed shelves 220. The second connection parts 230 may fix the upper fixed shelves 220 on the lower fixed shelves 210.

The second connection part 230 may have substantially the same thickness as the second lower vertical frame 212 and the second upper vertical frame 222 along the second direction DR2. In one example, the second lower vertical frame 212, the second upper vertical frame 222, and the second connection unit 230 may constitute a single structure. In other words, the second lower vertical frame 212, the second upper vertical frame 222, and the second connector 230 may be parts of a frame extending along the third direction DR3. When the second lower vertical frame 212, the second upper vertical frame 222, and the second connection part 230 form a single structure, the second lower vertical frame 212 and the second upper vertical frame 222 , And the second connector 230 may not be provided with a boundary.

The support portions 312 may be provided between the lower fixed shelves 210 and the upper fixed shelves 220 and between the lower moving shelves 110 and the upper moving shelves 120. Both ends of the support portions 312 along the first direction DR1 may be fixed to a pair of fixed shelves 200, respectively. Each of the support portions 312 may be fixed to the second connection portions 230 between the lower fixed shelves 210 and the upper fixed shelves 220. The support portions 312 may extend along the first direction DR1 and pass through the moving shelves 100. The support portions 312 may not be fixed to the first connection portions 130. Accordingly, the movable shelves 100 can move independently from the support portions 312. Although each of the support portions 312 is illustrated to have a'[' shape or']' shape, this is not limiting.

The first step portions 310 may be provided on the support portions 312. The first step portions 310 may be arranged along the second direction DR2. Each of the first step portions 310 may be supported by a pair of support portions 312. The first step portions 310 immediately adjacent to each other may be spaced apart from each other along the second direction DR2 with one of the first connection portions 130 interposed therebetween. The first step portions 310 may extend along the first direction DR1. The first step portions 310 may be provided between a pair of fixed shelves 200. The first step portions 310 may pass through the moving shelves 100. In the movable shelves 100, the first step portions 310 may be provided between the support portions 312 and the upper movable shelves 120. The first step portions 310 may be provided between the first connection portions 130 spaced apart from each other along the second direction DR2.

The first step portions 310 may be footrests for a user to access the upper movable shelves 120 and the upper fixed shelves 220. For example, the first step portions 310 may have a plate shape, a mesh shape, or a grating shape.

In general, the movable shelving apparatus may be composed of only one layer of shelves corresponding to the lower movable shelves 110 and the lower fixed shelves 210 of the present disclosure. The movable shelving device 10 of the present disclosure may include upper movable shelves 120 and upper fixed shelves 220. Accordingly, a movable shelving device 10 having high space efficiency may be provided.

6 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to an exemplary embodiment. 7 is an enlarged view of part A of FIG. 6. FIG. 8 is a cross-sectional view of the mobile shelving device of FIG. 6 taken along line II-II' of FIG. 1. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1, 6 to 8, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, caster rails 410, And a movable lathe device 11 including lower casting rollers 420 may be provided. Unlike those described with reference to FIGS. 1 to 5, the movable shelving device 11 may further include caster rails 410 and lower casting rollers 420.

The caster rails 410 may be provided between the first step portions 310 and the lower moving shelves 110. For example, the caster rails 410 may be disposed on the bottom surface of the first step portions 310. Between the pair of first connecting portions 230 immediately adjacent to each other along the second direction DR2, the caster rails 410 may be provided between the pair of support portions 312. Caster rails 410 may be provided between a pair of fixed shelves 200. The caster rails 410 may extend in the first direction. For example, each of the caster rails 410 may have a circular column shape. Caster rails 410 may pass through the movable shelves 100.

The lower casting rollers 420 may be provided between the caster rails 410 and the lower moving shelves 110. For example, the lower casting rollers 420 may be provided on the top surfaces of the lower moving shelves 110. The lower casting rollers 420 may face each of the caster rails 410 and along the third direction DR3. The lower casting rollers 420 may have a shape corresponding to the caster rails 410. For example, when the caster rails 410 have a circular column shape, the lower casting rollers 420 may have concave surfaces respectively surrounding the caster rails 410. The lower casting rollers 420 may be rotated to move along the caster rails 410. The lower casting rollers 420 may improve mobility of the moving shelves 100.

The first step portions 310 may be fixed by the fixed shelves 200. The first step portions 310 may not be fixed by the moving shelves 100. While the movable shelving device 11 is in use (eg, while the user is standing on the first step portions 310), the first step portions 310 may be bent down. The lower casting rollers 420 may support the first step portions 310 on the lower moving shelves 110. The first step portions 310 may be prevented from being struck (ie, bent downward) by the lower casting rollers 420. Accordingly, the stability of the movable shelf device 11 may be improved.

9 is a cross-sectional view taken along line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments. 10 is an enlarged view of part B of FIG. 9. 11 is a cross-sectional view corresponding to line II-II' of FIG. 1 of the mobile shelving device of FIG. 9. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1, 9 to 11, a movable shelf device including movable shelves 100, a pair of fixed shelves 200, first step portions 310, and support portions 320 ( 12) can be provided.

Unlike those described with reference to FIGS. 1 to 5, each of the first connecting portions 132 is smaller than the first upper vertical frame 122 and the first lower vertical frame 112 along the second direction DR2. Can have a width. The first connection parts 132 may expose bottom surfaces 122b of the first upper vertical frames 122 and upper surfaces 112u of the first lower vertical frames 112.

The second connection parts 230 may be substantially the same as the second connection parts 230 described with reference to FIGS. 1 to 5. For example, each of the second connection parts 230 may have substantially the same width as the second upper vertical frame 222 and the second lower vertical frame 212 along the second direction DR2.

The support portions 312 may be fixed to the second connection portions 230. The distance between the pair of support parts 312 spaced apart from each other along the second direction DR2 with one of the second connection parts 230 interposed therebetween is a second direction of the one second connection part 230. It may be substantially equal to the width along (DR2).

In the moving shelves 100, the pair of support portions 312 and the first connecting portions 132 may be spaced apart from each other along the second direction DR2. Side surfaces of the pair of support portions 312 and the first connection portions 132 may be spaced apart from each other. The first upper vertical frames 122 and the first lower vertical frames 112 may not overlap the support portions 312 along the third direction DR3.

Each of the first step portions 310 may be disposed between the first upper vertical frame 122 and the first lower vertical frame 112 immediately adjacent to each other. The first step portions 310 may protrude from side surfaces of the immediately adjacent support portions 312. The distance between the first step portions 310 and the immediately adjacent first connecting portions 132 may be smaller than the distance between the support portions 312 and the first connecting portions 132. The distance between the pair of first step portions 310 spaced apart from each other with any one of the first connection portions 132 interposed therebetween is a pair of spaced apart from each other with the one first connection portion 132 interposed therebetween. It may be smaller than the distance between the support portions 312.

Each of the first step portions 310 may overlap the first upper vertical frame 122 and the first lower vertical frame 112 immediately adjacent to each other along the third direction DR3. Each top surface of the first step portions 310 may face the bottom surface 122b of the first upper vertical frame 122. Each bottom surface of the first step portions 310 may face the upper surface 112u of the first lower vertical frame 112.

The first step portions 310 may overlap the second connection portions 230 along the first direction DR1. Side surfaces of the step portions 310 facing the first direction DR1 may face side surfaces of the second connection portions 230 facing each other in a direction opposite to the first direction DR1. Side surfaces of the step portions 310 facing in a direction opposite to the first direction DR1 may face side surfaces of the second connection portions 230 facing each other in the first direction DR1. The first step portions 310 may not overlap with the first connection portions 130 along the first direction DR1.

The user of the movable shelf device 12 may move along the second direction DR2 on the first step portions 310. The first connection portions 132 of the present disclosure may have a relatively small thickness along the second direction DR2. Accordingly, the distances between the first step portions 310 may be minimized. The safety of the mobile shelving device 12 can be improved.

12 is a cross-sectional view taken along line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments. FIG. 13 is a cross-sectional view of the mobile shelving device of FIG. 12 taken along line III′ of FIG. 1. 14 is a plan view of the mobile shelving device of FIG. 12; For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1, 12 to 14, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, and auxiliary step portions 302 A movable shelf device 13 including a can be provided. Unlike that described with reference to FIGS. 1 to 5, the movable shelving device 13 may further include auxiliary step portions 302.

The auxiliary step portions 302 may be disposed parallel to the first step portions 310. The auxiliary step portions 302 may extend along the first direction DR1 and pass through the first connecting portions 130 and the second connecting portions 230. Each of the auxiliary step portions 302 may have a width smaller than that of the first connecting portion 130 and the second connecting portion 230 along the second direction DR 2. The auxiliary step portions 302 may be fixed to a pair of fixed shelves 200. For example, the auxiliary step portions 302 may be fixed to the second connection portions 230. The auxiliary step portions 302 may be free from the moving shelves 100. In other words, the movable shelves 100 may move independently from the auxiliary step unit 302. The auxiliary step portions 302 may be provided in regions between the first step portions 310, respectively. In example embodiments, top surfaces of the auxiliary step portions 302 may be disposed at substantially the same level as the top surfaces of the first step portions 310.

The user of the movable lathe device 13 may move along the second direction DR2 on the first step portions 310. The auxiliary step portions 302 of the present disclosure may fill regions between the first step portions 310, respectively. Accordingly, the safety of the mobile shelving device 13 can be improved.

15 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1 and 15, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, and first horizontal guides 512 A movable shelving arrangement 14 may be provided which comprises. Unlike described with reference to FIGS. 1 to 5, the movable shelving device 14 may further include first horizontal guides 512.

The first horizontal guides 512 may be provided on the lower moving shelves 110. The first horizontal guides 512 may overlap the first connecting portions 130 along the first direction DR1. On each of the lower moving shelves 110, the first horizontal guides 512 may be provided between the first connecting portions 130 arranged along the first direction DR1. Each of the first horizontal guides 512 may be provided between a pair of support portions 312 spaced apart from each other with the first connection portions 130 arranged along the first direction DR1 therebetween. The first horizontal guides 512 may directly contact the support portions 312 spaced apart from each other with the first horizontal guides 512 interposed therebetween. The first horizontal guides 512 may include a material having elasticity. For example, the first horizontal guides 512 may include wheels having elasticity. The first horizontal guides 512 may be fixed to the lower fixed shelves 100 by connection members (reference numeral not shown).

When the moving shelf 100 moves, the driving force may not be uniformly transmitted to the entire moving shelf 100. Accelerations of a part of the moving shelf 100 that receives a relatively large amount of driving force and another part of the moving shelf 100 that receives a relatively small amount of driving force may have different accelerations. Accordingly, the moving shelf 100 may rotate based on a virtual axis (not shown) along the third direction DR3. The first horizontal guides 512 of the present disclosure may prevent rotation of the moving shelf 100. Accordingly, stability during operation of the movable lathe device 14 may be improved.

16 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to exemplary embodiments. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1 and 16, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, and second horizontal guides 514 A movable shelving device 15 may be provided that includes. Unlike described with reference to FIGS. 1 to 5, the movable shelf device 15 may further include second horizontal guides 514.

The second horizontal guides 514 may be provided on the lower moving shelves 110. The second horizontal guides 514 may be provided between the lower moving shelves 110 and the first step portions 310. The second horizontal guides 514 may be provided between the first connecting portions 130 arranged along the second direction DR2. The second horizontal guides 514 may be provided between the support portions 312 arranged along the second direction DR1.

The second horizontal guides 514 may directly contact side surfaces of the support portions 312 in the first direction DR1 or in a direction opposite to the first direction DR1. For example, the second horizontal guides 514 are inner surfaces facing the first direction DR1 or the opposite direction of the first direction DR1 of the support portions 312 having a'[' shape and a']' shape. You can touch the field directly. The second horizontal guides 514 may include a material having elasticity. For example, the second horizontal guides 514 may include wheels having elasticity. The second horizontal guides 514 may be fixed to the lower fixed shelves 100 by connecting members (reference numeral not shown).

When the moving shelf 100 moves, the driving force may not be uniformly transmitted to the entire moving shelf 100. Accelerations of a part of the moving shelf 100 that receives a relatively large amount of driving force and another part of the moving shelf 100 that receives a relatively small amount of driving force may be different from each other. Accordingly, the moving shelf 100 may rotate based on a virtual axis (not shown) along the third direction DR3. The second horizontal guides 514 of the present disclosure may prevent rotation of the moving shelf 100. Accordingly, stability during operation of the movable lathe device 15 may be improved.

17 is a cross-sectional view taken along line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1 and 17, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, and first vertical guides 522 A movable shelving device 16 may be provided that includes. Unlike described with reference to FIGS. 1 to 5, the movable shelving device 16 may further include first vertical guides 522.

The first vertical guides 522 may be provided between the support portions 312 and the lower moving shelves 110. The first vertical guides 522 may be provided under the support portions 312 to support the support portions 312. The first vertical guides 522 may support the support portions 312 to prevent the support portions 312 from being bent downward. The first vertical guides 522 may be provided between the support portions 312 and the lower moving shelves 110. The first vertical guides 522 may include a material having elasticity. For example, the first vertical guides 522 may include a wheel having elasticity. The first vertical guides 522 may be fixed to the immediately adjacent first connecting portions 130 by connecting members (reference numeral not shown).

The first vertical guides 522 of the present disclosure may support the first step portions 310. The first vertical guides 522 may prevent the first step portions 310 from being bent downward. Accordingly, the stability of the mobile shelving device 16 may be improved.

18 is a cross-sectional view corresponding to line II′ of FIG. 1 of a movable shelving device according to exemplary embodiments. 19 is an enlarged view of part C of FIG. 18. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 may not be described.

1, 18, and 19, moving shelves 100, a pair of fixed shelves 200, first step portions 310, vertical guide frames 524f, and a second vertical A mobile shelving device 17 comprising guides 524 may be provided. Unlike those described with reference to FIGS. 1 to 5, the movable shelving device 17 may not include the supports 312, and further include vertical guide frames 524f and second vertical guides 524. Can include.

Vertical guide frames 524f may be provided between a pair of fixed shelves 200. The vertical guide frames 524f may pass through the moving shelves 100. The vertical guide frames 524f may pass through an area between the lower moving shelves 110 and the upper moving shelves 120. The vertical guide frames 524f may be fixed on the lower fixed shelves 210. The vertical guide frames 524f may be provided on the bottom surfaces of the first step portions 310. The vertical guide frames 524f may be disposed parallel to the first step portions 310. The vertical guide frames 524f may extend along the first direction DR1. The vertical guide frames 524f may be arranged along the second direction DR2. The vertical guide frames 524f may have cross-sections of a'[' shape or a']' shape. A pair of vertical guide frames 524f immediately adjacent to each other may be spaced apart from each other through the first connection part 130. A pair of vertical guide frames 524f immediately adjacent to each other may face each other. In other words, inner side surfaces of the pair of vertical guide frames 524f facing each other in the second direction DR2 or opposite to the second direction DR2 may face each other.

The second vertical guides 524 may be provided on the lower moving shelves 110. The second vertical guides 524 may be provided within the vertical guide frames 524f. The size of the second vertical guides 524 along the third direction DR3 may be substantially the same as the size of the inner regions of each of the vertical guide frames 524f along the third direction DR3. . The second vertical guides 524 may include a material having elasticity. For example, the second vertical guides 524 may include wheels having elasticity. The second vertical guides 524 may be fixed to the immediately adjacent first connecting portions 130 by connecting members (reference numeral not shown).

When the moving shelf 100 moves, the driving force may not be uniformly transmitted to the entire moving shelf 100. A moving speed of a part of the moving shelf 100 that receives a relatively large amount of driving force and another part of the moving shelf 100 that receives a relatively small amount of driving force may be different. Accordingly, the moving shelf 100 may rotate based on a virtual axis (not shown) along the third direction DR3. The second vertical guides 524 of the present disclosure may prevent rotation of the moving shelf 100. Accordingly, stability during operation of the movable lathe device 17 may be improved.

The second vertical guides 524 of the present disclosure may support the first step portions 310. The second vertical guides 524 may prevent the first step portions 310 from being bent downward. Accordingly, the stability of the mobile shelving device 17 can be improved.

20 is a cross-sectional view corresponding to line II′ in FIG. 1 of a movable shelving device according to exemplary embodiments. 21 is an enlarged view of area D of FIG. 20. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 and 6 to 8 may not be described.

1, 20, and 21, moving shelves 100, a pair of fixed shelves 200, first step portions 310, support portions 312, lower caster rails 410 ), lower casting rollers 420, and upper casting rollers 620 may be provided. The movable shelves 100, a pair of fixed shelves 200, the first step portions 310, and the support portions 312 may be substantially the same as those described with reference to FIGS. 1 to 5. The lower caster rails 410 and the lower casting rollers 420 may be substantially the same as those described with reference to FIGS. 6 to 8.

Grooves 610 may be provided on the first step portions 310. The grooves 610 may be parallel to each other. The grooves 610 may extend along the first direction DR1. The grooves 610 may be arranged along the second direction DR2.

The upper casting rollers 620 may be provided on the bottom surface of the upper moving shelf 120. The upper casting rollers 620 may face the grooves 610. The upper casting rollers 620 may be provided in the grooves 610, respectively. The upper casting rollers 620 are rotated and can move along the grooves 610.

The upper casting rollers 620 of the present disclosure may improve mobility of the moving shelf 100. A mobile shelving device 18 with improved mobility may be provided.

22 is a side view of a movable shelving device according to exemplary embodiments. 23 is a side view for explaining the operation of the movable lathe device of FIG. 22. 24 is a side view for explaining the operation of the movable lathe device of FIG. 22. For the sake of brevity, contents substantially the same as those described with reference to FIGS. 1 to 5 and 6 to 8 may not be described.

Referring to FIG. 22, a movable type including movable shelves 100, a pair of fixed shelves 200, second step portions 320, caster rails 410, and lower casting rollers 420 A shelving arrangement 19 may be provided. The moving shelves 100 and the pair of fixed shelves 200 may be substantially the same as those described with reference to FIGS. 1 to 5. In order to describe the second step portions 302, some of the first connecting portions 130 and one second connecting portion 230 are shown only their upper portions. The first connecting portions 130 and the second connecting portions 230 may be substantially the same as the first connecting portions 130 and the second connecting portions 230 illustrated in FIG. 5.

Unlike the first step portions 310, the second step portions 320 may be arranged along the first direction DR1 and the second direction DR2. Each of the second step portions 320 may be provided over a pair of moving shelves 100 immediately adjacent to each other or a fixed shelf 200 and a moving shelf 100 immediately adjacent to each other. Each of the second step portions 320 may be provided on a pair of lower moving shelves 110 immediately adjacent to each other. Each of the second step portions 320 may be provided on the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

One end of each of the second step portions 320 may be fixed to one of a pair of lower moving shelves 110 immediately adjacent to each other or to one of the lower fixed shelves 210 and lower moving shelves 110 immediately adjacent to each other. I can. The other end of the second step portion 320 may be free. That is, the other end of the second step portion 320 may not be fixed.

Caster rails 410 may be provided on the bottom surfaces of the second step portions 320. Caster rails 410 may be substantially the same as those described with reference to FIGS. 6 to 8. The caster rails 410 may extend along the first direction DR1. The caster rails 410 may be arranged along the first direction DR1.

Lower casting rollers 420 may be provided between the caster rails 410 and the lower moving shelves 110 or between the caster rails 410 and the lower fixed shelves 210. The number of casting rollers 420 may be determined as needed. When the moving shelf 100 moves, the second step part 320 may move together with the moving shelf 100. Hereinafter, the movement of the movable shelf 100 will be described.

Referring to FIG. 23, the fixed shelf 200 and the other moving shelf 100 may be spaced apart from each other with one moving shelf 100 interposed therebetween. The second step part 320 may be provided between the fixed shelf 200 and the work moving shelf 100. One second step part 320 may be connected to and fixed to the fixed shelf 200. One second step unit 320 may not move. Another second step part 320 may be provided between the one moving shelf 100 and the other moving shelf 100. Another second step part 320 may be connected to and fixed to the work moving shelf 102. When the work movable shelf 100 moves, the other second step unit 320 may move together with the work movable shelf 100.

One moving shelf 100 may be in close contact with another moving shelf 100. One second step portion 320 may be exposed between the work moving shelf 100 and the fixed shelf 200. Another second step part 320 may be inserted into another moving shelf 100. Another second step part 320 may be disposed between the upper moving shelf 120 and the lower moving shelf 110 of the other moving shelf 100. The user may move between the upper moving shelf 120 of the work moving shelf 100 and the upper fixed shelf 220 of the fixed shelf 200 by using the second step part 320 as a footrest.

Referring to FIG. 24, the work movable shelf 100 is moved and may be in close contact with the fixed shelf 200. The other second step unit 320 may move together with the work moving shelf 100. Another second step portion 320 may be exposed between the one moving shelf 100 and the other moving shelf 100. The second step part 320 may be inserted into the work moving shelf 100. The second step unit 320 may be disposed between the upper moving shelf 120 and the lower moving shelf 110 of the work moving shelf 100. The user may move between the upper moving shelf 120 of the one moving shelf 100 and the upper moving shelf 120 of the other moving shelf 100 by using the second step part 320 as a footrest.

In general, the movable shelving apparatus may be composed of only one layer of shelves corresponding to the lower movable shelves 110 and the lower fixed shelves 210. The mobile shelving device 19 of the present disclosure may include upper movable shelves 120 and upper fixed shelves 220. Accordingly, a movable shelving device 19 having high space efficiency can be provided.

25 is a side view of a movable shelving device according to exemplary embodiments. 26 is an enlarged view of the third step portion of FIG. 25. For brevity of description, contents substantially the same as those described with reference to FIG. 22 may not be described.

Referring to FIGS. 25 and 26, a movable shelf device 20 including moving shelves 100, a pair of fixed shelves 200, and third step portions 330 may be provided. Unlike shown in FIG. 22, the movable shelving apparatus 20 may include third step portions 330 instead of second step portions (320 in FIG. 22) and caster rails (410 in FIG. 22 ). The operating direction of the third step portions 330 between the lower moving shelves 110 and the upper moving shelves 120 may be determined by a guide structure (not shown).

The third step portions 330 may be arranged along the first direction DR1 and the second direction DR2. Each of the third step portions 330 may be provided over a pair of moving shelves 100 immediately adjacent to each other or a fixed shelf 200 and a moving shelf 100 immediately adjacent to each other. Each of the third step portions 330 may be provided on a pair of lower moving shelves 110 immediately adjacent to each other. Each of the third step portions 330 may be provided on the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

One end of each of the third step portions 330 may be fixed to one of a pair of lower movable shelves 110 immediately adjacent to each other or to one of the lower fixed shelves 210 and lower movable shelves 110 immediately adjacent to each other. I can. The other end of the third step portion 330 may be free. That is, the other end of the third step portion 330 may not be fixed. The other end of the third step part 330 may move on the other one of the pair of lower moving shelves 110 or one of the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

Each of the third step portions 330 may include a plurality of sub-third step portions 332 connected to each other. The plurality of sub-third step portions 332 may rotate about a virtual axis extending along the second direction DR2 while passing through the connecting portions. Accordingly, the third step portions 330 may be bent. For example, when a pair of moving shelves 100 immediately adjacent to each other are close to each other, the free end of the third step portion 330 provided between the pair of moving shelves 100 is the third step It may be provided between the rest of the part 330 and the lower moving shelf 110.

The third step portion 330 may be bent. The third step part 330 may have a length longer than a width of the moving shelf 100 along the first direction DR1. Accordingly, a distance between the moving shelf 100 and the fixed shelf 200 immediately adjacent to each other or between a pair of moving shelves 100 immediately adjacent to each other may be maximized. As a result, user convenience may be increased.

27 is a side view of a movable shelving device according to example embodiments. 28A and 28B are enlarged views of the fourth step portion of FIG. 27. For the sake of brevity, contents substantially the same as those described with reference to FIG. 25 may not be described.

Referring to FIGS. 27, 28A, and 28B, a movable shelf device 21 including movable shelves 100, a pair of fixed shelves 200, and fourth step portions 340 will be provided. I can. Unlike that shown in FIG. 25, the movable shelving device 21 may include fourth step portions 340 instead of third step portions (330 in FIG. 25 ). The operation direction of the fourth step portions 340 between the lower moving shelves 110 and the upper moving shelves 120 may be determined by a guide structure (not shown).

The fourth step portions 340 may be arranged along the first direction DR1 and the second direction DR2. Each of the fourth step portions 340 may be provided over a pair of moving shelves 100 immediately adjacent to each other or a fixed shelf 200 and a moving shelf 100 immediately adjacent to each other. Each of the fourth step portions 340 may be provided on a pair of lower moving shelves 110 immediately adjacent to each other. Each of the fourth step portions 340 may be provided on the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

One end of each of the fourth step portions 340 may be fixed to one of a pair of lower moving shelves 110 immediately adjacent to each other or to one of the lower fixed shelves 210 and lower moving shelves 110 immediately adjacent to each other. I can. The other end of the fourth step portion 340 may be free. That is, the other end of the fourth step portion 340 may not be fixed. The other end of the fourth step part 340 may move on the other one of the pair of lower moving shelves 110 or one of the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

Each of the fourth step parts 340 may include a plurality of sub fourth step parts 342 and a first sub connection part 344 connected to each other. The first sub connection parts 344 may be provided between the plurality of sub fourth step parts 342, respectively. In an example, when a pair of moving shelves 100 immediately adjacent to each other are close to each other, the fourth step portions 340 may be folded. (FIG. 28A) In an example, when a pair of moving shelves 100 immediately adjacent to each other are separated from each other, the fourth step portions 340 may be unfolded. (Figure 28b)

The fourth step part 340 may have a length longer than a width of the moving shelf 100 along the first direction DR1. Accordingly, a distance between the moving shelf 100 and the fixed shelf 200 immediately adjacent to each other or between a pair of moving shelves 100 immediately adjacent to each other may be maximized. As a result, user convenience may be increased.

29 is a side view of a movable shelving device according to exemplary embodiments. 30 is an enlarged view of a fifth step portion of FIG. 29. For the sake of brevity, contents substantially the same as those described with reference to FIG. 25 may not be described.

Referring to FIGS. 29 and 30, a movable shelf device 22 including movable shelves 100, a pair of fixed shelves 200, and fifth step portions 350 may be provided. Unlike shown in FIG. 29, the movable shelving device 22 may include fifth step portions 350 instead of third step portions (330 of FIG. 25 ). The operating direction of the fifth step portions 350 between the lower moving shelves 110 and the upper moving shelves 120 may be determined by a guide structure (not shown).

The fifth step portions 350 may be arranged along the first direction DR1 and the second direction DR2. Each of the fifth step portions 350 may be provided over a pair of moving shelves 100 immediately adjacent to each other, or a fixed shelf 200 and a moving shelf 100 immediately adjacent to each other. Each of the fifth step portions 350 may be provided on a pair of lower moving shelves 110 immediately adjacent to each other. Each of the fifth step portions 350 may be provided on the lower fixed shelf 210 and the lower moving shelf 110 immediately adjacent to each other.

Each of the fifth step portions 350 may include a plurality of sub-fifth step portions 352 and second sub-connection portions 354 connected to each other. The second sub-connectors 354 may be provided between the plurality of sub-fifth step portions 352, respectively.

One end of each of the fifth step portions 350 may be fixed to one of a pair of lower moving shelves 110 immediately adjacent to each other or one of the lower fixed shelves 210 and lower moving shelves 110 immediately adjacent to each other. I can. The other end of the fifth step portion 350 may be fixed to the rotating structure 356. The rotation structure 356 may have a property to rotate in the direction in which the fifth step portions 350 are wound. In an example, when a pair of moving shelves 100 immediately adjacent to each other are close to each other, the rotating structure 356 rotates to wind the fifth step portions 350. In an example, when a pair of moving shelves 100 immediately adjacent to each other are separated from each other, the fifth step portions 350 may be unfolded.

The fifth step portion 350 may have a length longer than a width of the moving shelf 100 along the first direction DR1. Accordingly, a distance between the moving shelf 100 and the fixed shelf 200 immediately adjacent to each other or between a pair of moving shelves 100 immediately adjacent to each other may be maximized. As a result, user convenience may be increased.

31 is a perspective view of a mobile shelving system according to exemplary embodiments. For the sake of brevity, the contents substantially the same as those mentioned above may not be described.

Referring to FIG. 31, a movable shelving system 1 including a movable shelving device 1000, a staircase 1100, and a movable passage 1200 may be provided.

The movable shelving device 1000 may be one of the

movable shelving devices

10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 described above.

The moving passage 1200 may be configured to allow a user to access the upper fixed shelf 220 and the upper moving shelf 110 of the movable shelf device 1000. For example, the upper surface of the moving passage 1200 may be disposed at substantially the same level as the upper surface of the step portion 310. The shape of the moving passage 1200 is not limited to the illustrated one.

The staircase 1100 may be configured to move from below the moving passage 1200 onto the moving passage 1200. The shape of the staircase 1100 is not limited to that shown.

32 is a perspective view of a movable shelving system in accordance with example embodiments. For the sake of brevity, the contents substantially the same as those mentioned above may not be described.

Referring to FIG. 32, a movable shelving system 2 including a movable shelving device 1300, a staircase 1100, and a movable passage 1200 may be provided.

The movable shelving device 1300 may be one of the

movable shelving devices

10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 described above. However, unlike previously described, the lower fixed shelf and the lower moving shelf of the movable shelf device 1300 may protrude in a direction opposite to the second direction DR2 than the upper fixed shelf and the upper moving shelf, respectively. For example, each of the protruding portions may be a single shelf including storage areas arranged along the third direction DR3.

The stairs 1100 and the moving passage 1200 may be configured to allow a user to access the upper fixed shelf and the upper moving shelf of the movable shelf device 1000. The moving passage 1200 may be provided on the protruding portions. Accordingly, the space under the moving passage 1200 may be utilized. As a result, a movable shelving system 2 with high space efficiency can be provided. The shapes of the stairs 1000 and the moving passage 1200 are not limited to those shown.

The above description of the embodiments of the technical idea of the present invention provides an example for explaining the technical idea of the present invention. Therefore, the technical idea of the present invention is not limited to the above embodiments, and various modifications and changes are made within the technical idea of the present invention by combining the above embodiments by a person having ordinary skill in the art. It is obvious that it is possible.

Claims

Lower movable shelves arranged along the first direction;

Upper moving shelves provided on the lower moving shelves, respectively;

Support portions provided between the lower moving shelves and the upper moving shelves;

And

Step portions provided on the support portions; Including,

Among the lower moving shelves and the upper moving shelves, a lower moving shelf and an upper moving shelf immediately adjacent to each other move together.
The method of claim 1,

First connecting portions arranged in the first direction and in a second direction crossing the first direction between the lower moving shelves and the upper moving shelves; Including more,

Each of the lower moving shelves includes first lower vertical frames extending in a third direction perpendicular to the first direction and the second direction,

The first connecting portions are provided on the first lower vertical frames, respectively.
The method of claim 2,

A movable shelving device having a width of each of the first connecting portions along the second direction is smaller than a width of each of the first lower vertical frames along the second direction.
The method of claim 3,

A movable shelf device wherein the bottom surfaces of the step portions and the top surfaces of the first lower vertical frames face each other.
The method of claim 3,

A pair of lower fixed shelves spaced apart from each other along the first direction with the lower moving shelves interposed therebetween; And

Second connecting portions provided on the pair of lower fixed shelves; Including more,

Each of the pair of lower fixed shelves includes second lower vertical frames extending in the third direction,

The second connecting portions are provided on the second lower vertical frames, respectively,

A movable shelf device having a width of each of the second connecting parts along the second direction is greater than a width of each of the first connecting parts along the second direction.
The method of claim 2,

Auxiliary step portions disposed in parallel with the step portions; Including more,

The auxiliary step portions are movable lathe devices passing through the first connection portions.
The method of claim 6,

The upper surfaces of the auxiliary step portions and the upper surfaces of the step portions are disposed at the same level.
The method of claim 1,

Caster rails provided between the lower moving shelves and the step portions; And

Casting rollers provided between the caster rail and the lower moving shelves; of

Further include,

The casting rollers are rotated to move along the caster rails.
The method of claim 1,

A pair of lower fixed shelves spaced apart from each other along the first direction with the lower moving shelves interposed therebetween; Including more,

The support portions are fixed on the fixed shelves,

The lower movable shelves and the upper movable shelves move independently from the support parts.
The method of claim 1,

Vertical guides provided between the support portions and the lower moving shelves; of

Further include,

The vertical guides support the support parts, thereby preventing the support parts from being bent.
The method of claim 1,

Mobile shelving device further comprising; horizontal guides in contact with the side surfaces of the support parts.
The method of claim 1,

Upper casting rollers provided between the upper moving shelves and the step portions; Including more,

Grooves facing the upper casting rollers are provided on upper portions of the step portions,

The upper casting rollers are rotated to move along the grooves.
Lower movable shelves arranged along the first direction;

Upper moving shelves provided on the lower moving shelves, respectively;

A step portion provided between the lower moving shelves and the upper moving shelves; And

At least one lower casting roller provided between the lower moving shelves and the step portion; Including,

The lower moving shelves and the upper moving shelves are movable,

Among the lower moving shelves and the upper moving shelves, a lower moving shelf and an upper moving shelf immediately adjacent to each other move together.
The method of claim 13,

At least one lower caster rails each provided between the at least one lower casting rollers and the step portion; further comprising,

The at least one lower casting rollers are rotated to move along the at least one lower caster rails.
The method of claim 1,

Connection portions provided between the lower moving shelves and the upper moving shelves immediately adjacent to each other among the lower moving shelves and the upper moving shelves; Including more,

Each of the lower moving shelves includes lower vertical frames extending in the third direction,

The connection parts are provided on each of the lower vertical frames,

The connecting parts are movable lathe devices having smaller widths along a second direction crossing the first direction than the lower vertical frames.
The method of claim 15,

The step portion is a mobile shelving device vertically overlapping the lower vertical frame.
Lower movable shelves arranged along the first direction;

Upper moving shelves provided on the lower moving shelves, respectively; And

A step portion provided between the lower moving shelves and the upper moving shelves

field; Including,

The step portions are arranged along the first direction,

The lower moving shelves and the upper moving shelves are movable,

Among the lower moving shelves and the upper moving shelves, a lower moving shelf and an upper moving shelf immediately adjacent to each other move together.
The method of claim 17,

Each of the step portions is provided between a pair of lower moving shelves immediately adjacent along the first direction,

One end of each of the step portions is fixed on one of the pair of lower moving shelves,

The other end of each of the step portions moves on the other one of the pair of lower moving shelves.
The method of claim 18,

When the pair of lower moving shelves are close to each other, each of the step portions is bent,

A length of each of the step portions along the first direction is longer than a width of each of the pair of lower moving shelves along the first direction.
The method of claim 16,

When the pair of lower moving shelves are close to each other, each of the step portions is folded,

A length of each of the step portions along the first direction is longer than a width of each of the pair of lower moving shelves along the first direction.