shelf

Abstract

To provide a shelf that can easily create an enclosed space. [Solution] By swinging a pair of extension members 120L and 120R toward the front side of a pair of lateral members 110L and 110R using hinges H to unfold them, a space enclosed between the pair of extension members 120L and 120R is formed. This allows for the easy creation of an enclosed space without disassembling the shelf 100. By using such an enclosed space as a place for a portable toilet, changing clothes, and breastfeeding in evacuation shelters in disaster-stricken areas, disaster victims can safely perform excretion and other necessary functions when needed.

Description

Technical Field

[0001] The present invention relates to a shelf, particularly a shelf that can easily form an enclosed space.

Background Art

[0002] In evacuation shelters temporarily installed during disasters, many disaster victims take shelter in the same space (e.g., the gymnasium of a school). Therefore, it is desirable to install a simple toilet in the evacuation shelter or form an enclosed space for changing clothes or breastfeeding infants. Thus, as disclosed in Non-Patent Document 1, there has been devised a structure that normally functions as a shelf for placing luggage and transforms into a partition having an enclosed space from the shelf during disasters.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when transforming from a shelf to a partition in Non-Patent Document 1, all the luggage stored in the shelf must be taken out and the shelf must be disassembled on top of it. Especially in the situation of a shortage of manpower during disasters, the reconstruction from the shelf to the partition, which requires time and effort, will be postponed. As a result, disaster victims cannot perform excretion, changing clothes, etc. with confidence when necessary, and there is a risk of problems arising in the health status of disaster victims and the hygiene status of the evacuation shelter.

[0005] This invention was made to solve the above-mentioned problems and aims to provide a shelf that can easily create an enclosed space. [Means for solving the problem]

[0006] To achieve this objective, the shelf of the present invention is for storing luggage and comprises a pair of lateral members that form the sides of the shelf, a connecting member that connects the pair of lateral members and makes the pair of lateral members self-supporting, a shelf board member that is stretched between the pair of lateral members and on which luggage is placed, and a pair of extension members that are pivotably attached to the front side of each of the pair of lateral members via hinges. [Effects of the Invention]

[0007] The shelf according to claim 1 comprises a pair of extension members that are pivotably attached to the front side of each of a pair of lateral members via hinges. By pivoting the pair of extension members to the front side of the pair of lateral members via hinges, a space enclosed between the pair of extension members (hereinafter abbreviated as "enclosed space") is formed. This has the effect of easily forming the enclosed space without disassembling the shelf.

[0008] According to the shelf described in claim 2, the pair of extension members are configured to swing to a position where they overlap the outside of the pair of lateral members. This provides the effect of suppressing the overhang of the pair of extension members from the shelf when an enclosed space is not formed, by swinging the pair of extension members to a position where they overlap the outside of the pair of lateral members.

[0009] According to the shelf described in claim 3, the lateral member comprises an upper frame and a lower frame that form the upper and lower parts of the lateral member, vertical frames that connect both ends of the upper frame and the lower frame, and an intermediate frame that connects the vertical frames horizontally. This provides the effect of ensuring the rigidity of the lateral member by providing an intermediate frame that connects the vertical frames horizontally, in addition to the effects of the shelf described in claim 1. Furthermore, the intermediate frame provided horizontally can be used as a handrail for users utilizing the enclosed space, thus providing the effect of enabling elderly and disabled users to safely utilize the enclosed space.

[0010] According to the shelf described in claim 4, the extension member comprises an upper frame, a lower frame, vertical frames, and an intermediate frame. This provides the effect of ensuring the rigidity of the extension member by connecting the vertical frames horizontally, in addition to the effects of the shelf described in claim 3. Furthermore, the intermediate frame provided horizontally can serve as a handrail for users utilizing the enclosed space, thus providing the effect of enabling elderly and disabled users to safely utilize the enclosed space.

[0011] According to the shelf described in claim 5, the intermediate frame of the lateral member and the intermediate frame of the extension member are provided at different height positions. Therefore, when a user sits down from a standing position, they can grasp the lower intermediate frame as a handrail. Also, when a seated user stands up, they can grasp the higher intermediate frame as a handrail. As a result, in addition to the effects of the shelf described in claim 4, the user can use the enclosed space safely.

[0012] According to the shelf described in claim 6, the connecting member comprises an upper member that connects at least the upper frames of a pair of lateral members, and a bracing member that intersects and connects the vertical frames on the rear sides of a pair of lateral members. As a result, in addition to the effects of the shelf described in claim 4, the upper member connects the upper parts of a pair of lateral members, and the bracing member connects the rear sides of a pair of lateral members, thereby enabling the pair of lateral members to maintain a self-supporting state.

[0013] According to the shelf described in claim 7, the upper member connects at least the upper frames of the pair of extension members, and in the deployed state in which the pair of extension members are swung toward the front side of the pair of lateral members, the number of upper members provided at the front end of the pair of extension members is greater than the number of upper members provided at the rear end of the pair of lateral members. As a result, in addition to the effects of the shelf described in claim 6, bracing members are provided on the rear side of the pair of lateral members, so that rigidity on the rear side of the lateral members can be ensured even if the number of upper members on the rear side of the pair of lateral members is small.

[0014] On the other hand, since the front side of the pair of extension members is used as an entrance to the enclosed space, bracing members cannot be provided there. Therefore, by providing more upper members on the front side of the pair of extension members than the upper members on the rear side of the pair of lateral members, it is possible to ensure the strength of the front side of the pair of extension members.

[0015] According to the shelf described in claim 8, a pair of extension members are configured to swing to a position where they overlap the outside of a pair of lateral members, the upper frame of the lateral members is provided with a lateral frame-side fixing means, and the upper frame of the extension members is provided with an extension frame-side fixing means. When the pair of extension members are swung to a position where they overlap the outside of a pair of lateral members, the lateral frame-side fixing means and the extension frame-side fixing member are adjacent to each other, and the upper member is provided with an upper first fixing means that engages with the lateral frame-side fixing member and an upper second fixing means that engages with the extension frame-side fixing member. As a result, in addition to the effects of the shelf described in claim 6, one upper member can be used to fix only the pair of lateral members, only the pair of extension members, and both the pair of lateral members and the pair of extension members, thus reducing the number of upper members.

[0016] According to the shelf described in claim 9, the upper first fixing means is a fixing device that can be inserted into and removed from the lateral frame fixing means, and the upper second fixing means is a fixing device that can be inserted into and removed from the expansion frame fixing means. As a result, in addition to the effects of the shelf described in claim 8, it is easier to attach and detach the upper member to the upper frame compared to when the fixing device is made of screws, so that the position of the upper member can be easily changed when switching between a state in which the pair of expansion members are swung toward the front side of the pair of lateral members and a state in which the pair of expansion members are swung toward a position that overlaps the outside of the pair of lateral members.

[0017] The shelf according to claim 10 is provided with a sheet-like outer curtain that covers the entire circumference of the side of the shelf in the deployed state when a pair of extension members are swung toward the front side of the lateral members, and the outer curtain is attached to the upper frame. This makes it possible to make the enclosed space invisible from the side, in addition to the effects of the shelf according to claim 8. Furthermore, if the outer curtain is a commercially available opaque polyethylene sheet with grommets, the polyethylene sheet can be easily attached to the shelf by tying it to the upper frame via the grommets.

[0018] According to the shelf described in claim 11, the outer covering is a single outer covering that is wrapped around the sides of the shelf in the circumferential direction when it is deployed. This allows the use of commercially available opaque polyethylene sheets as the outer covering, in addition to the effects of the shelf described in claim 10. Furthermore, compared to the case where each side is covered with one outer covering, the formation of gaps between the outer coverings can be suppressed. This has the effect of making the enclosed space more invisible from the side.

[0019] According to the shelf described in claim 12, two upper members are provided at the front ends of a pair of extension members in the unfolded state, an outer curtain is attached to the upper member on the front side of the extension members, and a sheet-like privacy curtain is attached to the upper member on the rear side of the extension members. This provides the effect of making the enclosed space more invisible from the side, even if the outer curtain is accidentally rolled up.

[0020] According to the shelf described in claim 13, the upper member to which the privacy screen is attached is provided on the front side of the shelf board member in a plan view when the pair of extension members are swung to a position where they overlap the outside of the pair of lateral members. This provides, in addition to the effects of the shelf described in claim 12, the privacy screen can be used as a screen to cover an enclosed space when an enclosed space is formed, and as a screen to cover the front side of the goods placed on the shelf board member when an enclosed space is not formed.

[0021] According to the shelf described in claim 14, a sheet-like ceiling curtain is attached to the upper part of the upper member, and the height of one side of the upper surface of the ceiling curtain is higher than the height of the other side opposite to that side. As a result, in addition to the effects of the shelf described in claim 8, the space enclosed by the extension member can be made invisible from above by the ceiling curtain. Furthermore, by making the height of one side of the upper surface of the ceiling curtain higher than the height of the other side opposite to that side, a water slope is formed on the upper surface of the ceiling curtain, with the upper surface sloping downward from one side to the other. As a result, rainwater accumulated on the upper surface of the ceiling curtain can be drained.

[0022] According to the shelf described in claim 15, one side is one side in the direction in which the upper member extends, and the other side is the other side in the direction in which the upper member extends, so that a water gradient in the left - right direction in the front view of the surrounded space, that is, in the direction in which the upper member extends, is formed. As a result, in addition to the effect of the shelf described in claim 14, the rainwater accumulated on the upper surface of the ceiling curtain is drained to either the left or the right in the front view of the surrounded space, so that there is an effect of suppressing the rainwater from flowing into the surrounded space from the front. Also, since the direction of the water gradient is the direction in which the upper member extends, there is also an effect that the rainwater on the upper surface of the ceiling curtain can be smoothly drained along the upper member.

[0023] According to the shelf described in claim 16, two cross - bracing members are provided, and pedestals are provided at positions spaced a predetermined distance in the vertical direction on the inner sides of the vertical frames of the pair of side members. By fitting the cross - bracing members between the vertical frames and the pedestals, the cross - bracing members are provided on the side members. As a result, in addition to the effect of the shelf described in claim 6, there is an effect that other members for providing the cross - bracing members on the side members can be made unnecessary.

[0024] According to the shelf described in claim 17, the shelf board member suppresses the change in the opposing interval between the pair of side members by connecting the intermediate frames or lower frames of the pair of side members to each other. As a result, in addition to the effect of the shelf described in claim 16, since the state in which the cross - bracing members are fitted between the vertical frames and the pedestals can be maintained, there is an effect that the pair of side members can be maintained in a more self - standing state.

[0025] According to the shelf described in claim 18, the upper member includes weight - object installation means for fixing the guy wire provided on the heavy object. As a result, in addition to the effect of the shelf described in claim 8, by fixing the guy wire provided with the heavy object to the weight - object installation means, the pair of extension members can be swung to the front of the side member, and there is an effect that the state in which the surrounded space is formed can be firmly maintained.

[0026] According to the shelf described in claim 19, in the deployed state where a pair of extension members are swung to the front side of the pair of side members, when the upper member is fixed to the side member or the extension member, it is provided outside the side member or the extension member in the upper member. Thus, in addition to the effect achieved by the shelf described in claim 18, there is an effect that when changing to the deployed state, it is possible to suppress the side member or the extension member from becoming an obstacle to the operation of placing a heavy object on the heavy object placing means of the upper member of the user.

[0027] According to the shelf described in claim 20, the heavy object placing means is a through hole formed through the longitudinal end of the upper member. Thus, in addition to the effect achieved by the shelf described in claim 18 or 19, there is an effect that by inserting a tension wire through the through hole in the upper member, the tension wire can be easily and reliably fixed to the upper member.

[0028] According to the shelf described in claim 21, the shelf board member is configured to be detachable from the pair of side members. Thus, in addition to the effect achieved by the shelf described in any one of claims 1 to 11, there is an effect that when an enclosed space is formed, by placing the removed shelf board member on the ground or the floor in the enclosed space, it can be used as a temporary bed.

[0029] According to the shelf described in claim 22, the shelf is configured to be separable into side members, extension members, connecting members, and shelf board members. Thus, in addition to the effect achieved by the shelf described in any one of claims 1 to 11, there is an effect that by stacking and placing the connecting members and the shelf board members on the upper part of the separated side member or extension member, the shelf can be stored compactly and the shelf can be transported even by a relatively small transport vehicle such as a light truck.

[0030] According to the shelf described in claim 23, the upper frame, lower frame, vertical frame, intermediate frame, upper member, bracing member, and support frame (hereinafter referred to as "upper frame, etc.") are made of wooden square timber. As a result, in addition to the effects of the shelf described in claim 16, since wooden square timber is available as a standard product, the upper frame, etc. can be formed using readily available wooden square timber, and the shelf can be easily constructed. Furthermore, because the upper frame, etc. are made of wood, they can be disassembled and used as fuel for heating or cooking in the event of a disaster. [Brief explanation of the drawing]

[0031] [Figure 1] (a) is a front perspective view of a shelf in one embodiment of the present invention, and (b) is a front perspective view of the shelf in the extended member state. [Figure 2] (a) is a plan view of the shelf with the extension members stored, and (b) is a plan view of the shelf with the extension members extended. [Figure 3] This is a rear view of the shelf with the extension components stored inside. [Figure 4] (a) is a front perspective view of the shelf with a cover curtain installed, and (b) is a front perspective view of the shelf with both a cover curtain and an outer curtain installed. [Figure 5] This is a front perspective view of the shelf with the blinds, outer curtains, and ceiling curtains installed. [Figure 6] This is a perspective view of a shelf when it is disassembled into side members, extension members, shelf members, bracing members, and shelf members and stacked. [Modes for carrying out the invention]

[0032] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. Figure 1(a) is a front perspective view of shelf 100 in one embodiment of the present invention, and Figure 1(b) is a front perspective view of shelf 100 with extension members 120L and 120R extended. In Figure 1, arrows U, D, L, R, F, and B indicate the upward, downward, left, right, front, and rear directions of shelf 100, respectively, and the same applies to Figures 2 and beyond.

[0033] Figure 1 illustrates a configuration in which the shelf 100 is secured by attaching weights 161 with guy ropes 160. However, the installation of guy ropes 160 and weights 161 may be omitted.

[0034] As shown in Figure 1, the shelf 100 comprises lateral members 110L and 110R facing each other at a predetermined distance apart, extension members 120L and 120R connected to the lateral members 110L and 110R via hinges H, a plurality of upper members 130 (four in this embodiment) disposed above the lateral members 110L and 110R and the extension members 120L and 120R, a plurality of bracing members 140 (two in this embodiment) disposed on the rear side of the lateral members 110L and 110R, and a plurality of shelf board members 150 (three in this embodiment) spanning between the lateral members 110L and 110R.

[0035] Normally, shelf 100 functions as a storage unit for luggage LG placed on shelf board member 150 (see Figure 1(a)), and in the event of a disaster, it functions as a space that is not visible from the outside by deploying extension members 120L and 120R and attaching the outer curtain BS (see Figures 5 and 6). The detailed configuration of shelf 100 will be explained with reference to Figures 1 to 3.

[0036] Figure 2(a) is a plan view of shelf 100 with the extension members 120L and 120R stored inside, and Figure 2(b) is a plan view of shelf 100 with the extension members 120L and 120R extended. Figure 3 is a rear view of shelf 100 with the extension members 120L and 120R stored inside. Note that in Figures 2 and 3, the illustration of cargo LG has been omitted for simplification of the drawings.

[0037] As shown in Figures 1 to 3, the lateral members 110L and extension members 120L are formed in a rectangular frame shape from an upper frame 111 and a lower frame 112, and a pair of vertical frames 113L that connect both ends of the upper frame 111 and the lower frame 112, respectively.

[0038] Furthermore, the lateral member 110L and the extension member 120L are provided with multiple intermediate frames 114 (three for the lateral member 110L and two for the extension member 120L) that horizontally connect a pair of vertical frames 113L. The intermediate frames 114 of the lateral member 110L are positioned at different heights than those of the intermediate frames 114 of the extension member 120L. Specifically, the lowest intermediate frame 114 in the extension member 120L is positioned at a height between the lowest intermediate frame 114 and the second lowest intermediate frame 114 in the lateral member 110L. The intermediate frames 114 connecting the vertical frames 113L and the extension member 120L ensure the horizontal rigidity of the lateral member 110L and the extension member 120L.

[0039] The lateral member 110R and the extension member 120R are identical in all other respects to the lateral member 110L and the extension member 120L, except that the longitudinal dimension of the vertical frame 113R is smaller (shorter) than the longitudinal dimension of the vertical frame 113L of the lateral member 110L and the extension member 120L. Therefore, identical parts are denoted by the same reference numerals, and their descriptions are omitted.

[0040] By making the longitudinal dimension of the vertical frame 113R of the lateral member 110R and extension member 120R smaller (shorter) than the longitudinal dimension of the vertical frame 113L of the lateral member 110L and extension member 120L, when the shelf 100 is installed on a horizontal surface, the height position of the upper frame 111 of the lateral member 110R and extension member 120R is lower (closer to the installation surface) than the height position of the upper frame 111 of the lateral member 110L and extension member 120L. As a result, the upper member 130 is inclined downwards in a direction that approaches the installation surface as it moves from the lateral member 110L and extension member 120L toward the lateral member 110R and extension member 120R (see Figure 3).

[0041] The hinge H connects the outer surface of the vertical frame 113L of the lateral member 110L to the outer surface of the vertical frame 113L of the extension member 120L, with the axis of rotation facing vertically. As a result, when the pair of extension members 120L and 120R (hereinafter referred to as "the pair of extension members 120") are stored (hereinafter referred to as "stored state"), the pair of extension members 120 overlap the outside of each of the pair of lateral members 110L and 110R (hereinafter referred to as "the pair of lateral members 110") (see Figures 1(a) and 2(a)).

[0042] On the other hand, when the extension member 120L is deployed (hereinafter referred to as "deployed state"), the extension member 120L protrudes in front of (facing) the lateral member 110L, and these lateral members 110L and extension member 120L are arranged side by side on the same plane. That is, the upper frame 111 of the lateral member 110L and the upper frame 111 of the extension member 120L are arranged in a straight line in a plan view (see Figure 2(b)).

[0043] The connection structure of the lateral member 110R and the extension member 120R by the hinge H, and the manner in which the extension member 120R is stored or unfolded via the hinge H, are the same as in the case of the lateral member 110L and the extension member 120L, so their explanation will be omitted.

[0044] The upper member 130 is equipped with a cylindrical dowel 181 protruding from its lower surface. The upper member 130 can be connected to the upper frame 111 by inserting the dowel 181 into one of the dowel holes 182 recessed in multiple locations (four locations in this embodiment) on the upper surface of the upper frame 111. The upper member 130 can be removed from the upper frame 111 by removing the dowel 181 from the dowel hole 182.

[0045] The dowel holes 182 are arranged at non-equal intervals along the longitudinal direction of the upper frame 111, and the dowel holes 182 in the upper frame 111 of the lateral members 110L and 110R are adjacent to the dowel holes 182 in the upper frame 111 of the extension members 120L and 120R when stored.

[0046] Four dowels 181 are provided, two at each end of the upper member 130 in the longitudinal direction. In the stored state, the inner dowel 181 of the two dowels 181 at one end is inserted into the dowel hole 182 of the upper frame 111 of the lateral member 110L, and the outer dowel 181 is inserted into the dowel hole 182 of the upper frame 111 of the extension member 120L. At the same time, the inner dowel 181 of the two dowels 181 at the other end is inserted into the dowel hole 182 of the upper frame 111 of the lateral member 110R, and the outer dowel 181 is inserted into the dowel hole 182 of the upper frame 111 of the extension member 120R (see Figures 1(a) and 2(a)).

[0047] In the deployed state, the inner dowel 181 of the two dowels 181 at one end is inserted into the dowel hole 182 of the upper frame 111 of the lateral member 110L or the upper frame 111 of the expansion member 120L, while the inner dowel 181 of the two dowels 181 at the other end is inserted into the dowel hole 182 of the upper frame 111 of the lateral member 110R or the upper frame 111 of the expansion member 120R (see Figures 1(b) and 2(b)).

[0048] In this way, by providing dowels 181 on the upper member 130 and dowel holes 182 on the upper frame 111, one upper member 130 can be used to fix only the pair of side members 110, only the pair of extension members 120, or both the pair of side members 110 and the pair of extension members 120, thereby reducing the number of upper members 130 required for the shelf 100.

[0049] In this embodiment, when stored, upper members 130 are provided in each of the dowel holes 182 from the front to the back of the overlapping pair of lateral members 110 and pair of extension members 120 (see Figure 1(a)). On the other hand, when unfolded, upper members 130 are provided in the frontmost dowel hole 182 and the second frontmost dowel hole 182 of the pair of extension members 120, and upper members 130 are provided in the frontmost dowel hole 182 and the rearmost dowel hole 182 of the pair of lateral members 110.

[0050] Through holes 131 are formed at both longitudinal ends of the upper member 130. The other end of a guy rope 160, one end of which is connected to a weight 161, is inserted through the through holes 131 and tied. When the expansion members 120L and 120R are deployed, the through holes 131 are located outward from the outer surfaces of the lateral members 110L and 110R and the expansion members 120L and 120R.

[0051] In this embodiment, as shown in Figures 1(a) and 2(a), when the pair of expansion members 120 are stored, the guy ropes 160 are tied to each of the through holes 131 in the upper member 130 located on the rearmost side of the pair of lateral members 110. On the other hand, as shown in Figures 1(b) and 2(b), when the pair of expansion members 120 are deployed, the guy ropes 160 are tied to the through holes 131 in the upper member 130 located on the rearmost side of the pair of lateral members 110 and to the through hole 131 in the upper member 130 located on the frontmost side of the pair of expansion members 120.

[0052] In this way, by tying the guy rope 160 to the through hole 131, the load of the weight 161 can be applied to the upper member 130. As a result, the side members 110L, 110R and the extension members 120L, 120R are firmly fixed to the mounting surface of the shelf 100 via the upper member 130, so that the state in which the pair of extension members 120 are positioned in front of the pair of side members 110 can be firmly maintained, especially when the pair of extension members 120 are deployed. In addition, by inserting the guy rope 160 through the through hole 131 and tying it, the guy rope 160 can be easily and reliably fixed to the upper member 130.

[0053] Furthermore, the through-hole 131 is formed so that, in the deployed state, it is located further outward than the outer edges of the lateral members 110L, 110R and the expansion members 120L, 120R. This prevents the lateral members 110L, 110R and the expansion members 120L, 120R from interfering with the user's work when tying the guy ropes 160 to the through-hole 131 or when untying the guy ropes 160 that have been tied to the through-hole 131 in the deployed state.

[0054] Furthermore, the knot of the guy rope 160 in the through hole 131 is not limited to the configuration shown in Figure 3, and other configurations such as a bowline knot may also be used. Also, the other end of the guy rope 160 is not limited to being tied near the through hole 131; the other end of the guy rope 160 that has been inserted through the through hole 131 may be tied to one end of the guy rope 160 with a flexible knot or the like.

[0055] As shown in Figure 3, the bracing members 140 are diagonally positioned between the vertical frame 113L of the lateral member 110L and the vertical frame 113R of the lateral member 110R to reinforce the back side of the shelf 100, and two of them are arranged to intersect. A pair of support frames 170 are arranged on the inner surfaces of the vertical frames 113L and 113R at predetermined intervals in the vertical direction.

[0056] Both ends of the bracing member 140 are formed in a shape corresponding to the shape of the joint between the vertical frames 113L, 113R and the frame 170, and a lap joint 141 is recessed at the intersection of the bracing member 140 (see Figure 6). One of the two bracing members 140 is fitted into the joint between the frame 170 and vertical frame 113L at the top of the lateral member 110L and the joint between the frame 170 and vertical frame 113R at the bottom of the lateral member 110R, respectively.

[0057] Then, the lap joint 141 of the other bracing member 140 is fitted into the lap joint 141 of the other bracing member 140, while the other bracing member 140 is fitted into the joint portion of the upper frame 170 and vertical frame 113R of the lateral member 110R and the joint portion of the lower frame 170 and vertical frame 113L of the lateral member 110L, respectively. This allows the bracing member 140 to be detachably installed between the vertical frames 113L and 113R.

[0058] Furthermore, both ends of the bracing member 140 are formed in a shape corresponding to the shape of the joint between the vertical frame 113L, 113R and the frame 170, and a lap joint 141 is recessed at the intersection of the bracing member 140, thereby suppressing displacement of the bracing member 140 provided on the pair of lateral members 110 due to the relative displacement of the pair of lateral members 110. This makes it possible to increase the rigidity of the back side of the pair of lateral members 110. In addition, the lap joints 141 of the bracing members 140 fit together, which prevents one of the intersecting bracing members 140 from protruding more than the other bracing member 140.

[0059] As shown in Figures 1 and 2, the shelf board member 150 is a member in which multiple members (five in this embodiment) are arranged and fixed at regular intervals on a base frame that is rectangular in plan view. In this embodiment, the shelf board member 150 is used by being spanned between the lowest intermediate frame 114 of the side member 110L and the lowest intermediate frame 114 of the side member 110R, and between the second lowest intermediate frame 114 of the side member 110L and the second lowest intermediate frame 114 of the side member 110R. The shelf board member 150 is also used by being spanned between the lower frame 112 of the side member 110L and the lower frame 112 of the side member 110R.

[0060] Cylindrical dowels (not shown) protrude from the upper surfaces of the intermediate frame 114 and the lower frame 112, and dowel holes (not shown) into which these dowels are inserted are recessed in the lower surface of the base frame of the shelf board member 150. This allows the shelf board member 150 to be detachably attached to the intermediate frame 114 and the lower frame 112. Alternatively, the dowels may be provided on the shelf board member 150, and the dowel holes may be recessed in the upper surfaces of the intermediate frame 114 and the lower frame 112.

[0061] Next, with reference to Figures 4 and 5, the outer curtain BS, the concealment curtain SS, and the ceiling curtain CS provided on the shelf 100 when the extension members 120L and 120R are extended will be described. Figure 4(a) is a front perspective view of the shelf 100 with the concealment curtain SS installed, and Figure 4(b) is a front perspective view of the shelf 100 with both the concealment curtain SS and the outer curtain BS installed.

[0062] As shown in Figure 4(a), the blindfold SS is attached to the second upper member 130, which is the front-facing upper member, of the four upper members 130 provided in the unfolded state. In this embodiment, an opaque polyethylene sheet (for example, blue) is used as the blindfold SS. The blindfold SS is attached to the second front-facing upper member 130 by passing strings through the grommets provided in the blindfold SS and tying these strings to the second front-facing upper member 130. Since the width dimension of the shelf 100 in the unfolded state is 1370 mm, the depth dimension is 1240 mm, and the height dimension is 1800 mm, a standard polyethylene sheet can be easily used as the outer blindfold BS.

[0063] As shown in Figure 4(b), an outer curtain BS is attached to the entire perimeter of the side of the shelf 100, which is equipped with a privacy curtain SS. In this embodiment, an opaque polyethylene sheet is used as the outer curtain BS. The outer curtain BS is constructed by wrapping one outer curtain BS around the circumferential direction of the side of the shelf 100 in the expanded members 120L and 120R when they are deployed. By passing strings through the grommets provided on the outer curtain BS and tying these strings to the upper member 130 on the front side and the upper member on the rear side, and to their respective upper frames 111, the outer curtain BS is attached to the entire perimeter of the side of the shelf 100.

[0064] As shown in Figure 5, a ceiling curtain CS is attached to the top of the shelf 100, specifically the top of the upper member 130, where the privacy curtain SS and outer curtain BS are provided. In this embodiment, an opaque polyethylene sheet is used as the ceiling curtain CS. The ceiling curtain CS is hung over the top of the upper member 130, strings are passed through each of the grommets provided in the ceiling curtain CS, and these strings are tied to the upper frame 111, with the frontmost upper member 130 and the rearmost upper member being tied to the upper frame 111, thereby attaching the ceiling curtain CS to the top of the upper member 130.

[0065] In the shelf 100 configured in this way, as shown in Figures 1 and 2, a pair of extension members 120 are swung to the front side of a pair of lateral members 110 by hinges H to extend them, thereby creating a space enclosed between the pair of extension members 120 (hereinafter referred to as the "enclosed space"). This allows the enclosed space to be easily created without disassembling the shelf 100. By using such an enclosed space as a place for a portable toilet, changing clothes, or breastfeeding in evacuation shelters in disaster-stricken areas, disaster victims can safely perform excretion and other necessary functions when needed.

[0066] In this case, as shown in Figures 4 and 5, the outer curtain BS is attached to the side of the unfolded shelf 100 and the ceiling curtain CS is attached to the top, so that the enclosed space can be made invisible from the side and from above. Of these, the outer curtain BS covers the entire perimeter of the side of the unfolded shelf 100 with a single sheet, so that gaps are not formed between the outer curtain BS and the vertical frames 113L and 113R, making the enclosed space even more invisible from the side.

[0067] In addition, a privacy screen SS is installed inside the outer curtain BS, more specifically, inside the outer curtain BS on the front side of the pair of extension members 120 that allow users to enter and exit the enclosed space. Therefore, even if user A2 accidentally lifts the outer curtain BS on the front side of the pair of extension members 120, i.e., the entrance / exit of the enclosed space, while user A1 is using the enclosed space, the privacy screen SS can maintain a state where the front side of the enclosed space is covered. This makes user A1 using the enclosed space more invisible from the side.

[0068] Returning to Figures 1 and 2, when switching from the deployed state to the stored state, the pair of extension members 120 are positioned to overlap the outside of the pair of lateral members 110. This suppresses the overhang of the pair of extension members 120 from the shelf 100 when the enclosed space is not formed in the stored state.

[0069] Furthermore, when switching from the deployed state to the stored state, the upper member 130 with the cover curtain SS attached can be inserted into the dowel hole 182 on the front side of the shelf member 150 of the side members 110L and 110R (specifically, in section C of Figure 2(a)) while the cover curtain SS is still attached, thereby allowing the cover curtain SS to be used as a cover to conceal the front side of the luggage LG placed on the shelf member 150.

[0070] Of the intermediate frames 114, the lowest intermediate frame 114 in the extension member 120L is positioned at a height between the lowest intermediate frame 114 and the second lowest intermediate frame 114 in the lateral member 110L. For example, the lowest intermediate frame 114 in the lower lateral member 110L can be grasped by a user in the enclosed space when moving from a standing position to a sitting position. Also, the lowest intermediate frame 114 in the higher extension member 120L can be grasped by a user when moving from a seated position to a standing position. With multiple intermediate frames 114 at different height positions, the user can safely utilize the enclosed space.

[0071] Furthermore, an upper member 130 and a bracing member 140 are provided as connecting members that connect the pair of lateral members 110. The upper member 130 connects the upper parts of the pair of lateral members 110, and the bracing member 140 connects the rear sides of the pair of lateral members 110. In addition, the lower frames 112 and intermediate frames 114 of the pair of lateral members 110 are connected by a shelf member 150. This prevents the distance between the opposing lateral members 110 from changing, and allows the bracing member 140 to maintain a state in which it is fitted between the vertical frames 113L, 113R and the frame 170. As a result, the pair of lateral members 110 can maintain a self-supporting state.

[0072] In the deployed state, two upper members 130 are provided at the front ends of the pair of extension members 120, while one upper member 130 is provided at the rear end of the pair of lateral members 110. Since a bracing member 140 is provided on the rear side of the pair of lateral members 110, the rigidity of the rear side of the pair of lateral members 110 can be ensured even with a small number of upper members 130.

[0073] On the other hand, in the deployed state, the front side of the pair of extension members 120 is used as an entrance to the enclosed space, so bracing members 140 cannot be provided there. Therefore, by providing more upper members 130 on the front side of the pair of extension members 120 than the upper members on the rear side of the pair of lateral members 110, the strength of the front side of the pair of extension members 120 can be ensured.

[0074] As shown in Figure 3, the upper member 130 is inclined downwards from the lateral members 110L and extension members 120L toward the lateral members 110R and extension members 120R, approaching the installation surface. Since a ceiling curtain CS is provided on the upper part of the upper member 130, a water slope is formed on the ceiling curtain CS in the direction from the lateral members 110L and extension members 120L toward the lateral members 110R and extension members 120R due to the downward inclination. This water slope allows rainwater accumulated on the ceiling curtain CS to be drained.

[0075] The direction in which this water slope is formed is from the front to the back of the pair of extension members 120, that is, perpendicular to the direction in which users enter and exit the enclosed space, so that rainwater drained from the ceiling curtain CS does not flow into the front side of the enclosed space. Furthermore, the direction in which the water slope is formed is the direction in which the upper member 130, which is made of square timber, is extended, so that rainwater on the upper surface of the ceiling curtain CS can be smoothly drained along the upper member 130.

[0076] The shelf board member 150 is detachably attached to the intermediate frame 114 and the lower frame 112. This allows the intermediate frame 114 or the lower frame 112 to be fitted with the shelf board member 150 depending on the height of the luggage LG to be placed on the shelf board member 150. In addition, the shelf board member 150 is provided with dowel holes, and dowels to be inserted into these holes are provided on the intermediate frame 114 side and the lower frame 112 side. When the unit is unfolded to form an enclosed space, the removed shelf board member 150 can be placed on the mounting surface of the shelf 100, allowing the shelf board member 150 to be used as a temporary bed.

[0077] Next, the storage and transport of shelf 100 will be explained with reference to Figure 6. Figure 6 is a perspective view of shelf 100 when it is disassembled into side members 110L, 110R, extension members 120L, 120R, bracing members 140 and shelf board members 150 and stacked.

[0078] By pulling out the upper member 130 from the upper frame 111 of the lateral members 110L, 110R and the extension members 120L, 120R, and further pulling out the shelf member 150 from the intermediate frame 114 or lower frame 112 of the lateral members 110L, 110R and the extension members 120L, 120R, the shelf 100, which is normally integrated, can be disassembled into the lateral members 110L and extension member 120L, the lateral members 110R and extension member 120R, the bracing member 140, and the shelf member 150.

[0079] After disassembly, the side members 110R and 120R are placed on top of the side members 110L and 120L, which have the largest surface area. Then, the bracing members 140, shelf members 150, and upper members 130 are placed on top of the side members 110R and 120R. This allows the area required for storing the shelf 100 to be the area of ​​the side members 110L and 120L (for example, 1800mm in length and 600mm in width). As a result, the shelf 100 can be stored compactly and transported even in relatively small transport vehicles such as light trucks.

[0080] Here, the upper frame 111, lower frame 112, vertical frame 113L, intermediate frame 114, upper member 130, bracing member 140, shelf board member 150, and frame 170 (hereinafter abbreviated as "upper frame 111, etc.") that form the lateral members 110L, 110R and extension members 120L, 120R are made of wooden square timbers. Here, a set of multiple wooden square timbers with the same width, height, and length dimensions is distributed as a standard product, so by forming the upper frame 111, etc. with readily available and standard wooden square timbers with unified dimensions, the shelf 100 can be easily formed. In addition, because the upper frame 111, etc. are made of wood, they can be disassembled and used as fuel for heating and cooking in the event of a disaster.

[0081] Although the present invention has been described above based on the embodiments, it can be easily inferred that the present invention is not limited in any way to the embodiments described above, and that various improvements and modifications are possible without departing from the spirit of the present invention.

[0082] In the above embodiment, the pair of extension members 120 overlap the outside of the pair of lateral members 110 in the stored state, but the embodiment is not limited to this. For example, in the stored state, the pair of extension members 120 may be positioned on the front side between the pair of lateral members 110, more specifically on the front side of the shelf member 150. This increases the rigidity of the shelf 100 in the stored state by positioning the pair of extension members 120, which are aligned in the left-right direction, on the front side of the pair of extension members 120.

[0083] In the above embodiment, a dowel 181 is provided on the upper member 130 and a dowel hole 182 is provided on the upper frame 111, but it is not limited to this. For example, a dowel 181 may be provided on the upper frame 111 and a dowel hole 182 may be provided on the upper member 130. In this case, for example, in the stored state, in part A of Figure 2(a), a dowel 181 is provided on the upper frame 111 of both the pair of lateral members 110 and the pair of extension members 120, in parts B and C, a dowel 181 is provided only on the upper frame 111 of the pair of extension members 120, and in part D, a dowel 181 is provided only on the upper frame 111 of the pair of lateral members 110.

[0084] Furthermore, as upper members 130, three upper members 130 (hereinafter referred to as "first upper members 130X," not shown) are provided, each having two dowel holes 182 formed at both ends in the longitudinal direction, for a total of four holes. One upper member 130 (hereinafter referred to as "second upper member 130Y," not shown) is provided, each having one dowel hole 182 formed at both ends in the longitudinal direction, for a total of two holes. The dowel holes 182 of the second upper member 130Y are formed in the same positions as the inner dowel holes 182 at both ends in the longitudinal direction of the first upper member 130X.

[0085] In the stored state, insert the dowels 181 of sections A to C of the upper frame 111 into the dowel holes 182 of the three first upper members 130X, respectively, and insert the dowel 181 of section D of the upper frame 111 into the dowel hole 182 of the second upper member 130Y. Hereafter, the dowels 181 of sections A to D of the upper frame 111 will be abbreviated as "dowels 181 of sections A to D".

[0086] When switching from the stored state to the deployed state, first, the first upper member 130X into which the dowels 181 of sections B and C are inserted is lifted, and the dowels 181 of sections B and C are pulled out from the dowel holes 182 of these first upper members 130X. Then, one end of the first upper member 130X into which the dowel 181 of section A is inserted is lifted and tilted, and the dowel 181 of section A of the corresponding extension members 120R and 120L is pulled out from the dowel hole 182 of the lifted end of the first upper member 130X, and the corresponding extension members 120L and 120R are swung outwards slightly (for example, by 15°).

[0087] In this configuration, the dowel holes 182 on the other end of the first upper member 130X, which has one end lifted, are fitted with the dowels 181 of section A of the lateral members 110L and 110R and the dowels 181 of section A of the extension members 120L and 120R. Additionally, the dowel holes 182 of the second upper member 130Y are fitted with the dowels 181 of section D of the pair of lateral members 110. This allows the shelf 100 to remain upright while the extension members 120L and 120R corresponding to one end can be swung.

[0088] Next, one end of the lifted first upper member 130X is lowered, and the dowel 181 of section A of the lateral members 110L and 110R is inserted into the inner dowel hole 182 of one end of the first upper member 130X. The same procedure is performed on the other end of the first upper member 130X that is inserted into the dowel 181 of section A. As a result, each of the dowels 181 of section A of the pair of extension members 120 is pulled out of the dowel hole 182 of the first upper member 130X, and the pair of extension members 120 becomes pivotable, so they are then pivoted to the front side of the pair of lateral members 110.

[0089] Then, the dowel 181 on the front side of the pair of extension members 120 is inserted into the dowel hole 182 of the first upper member 130X where the dowel 181 of section B was inserted in the stored state, and the second front dowel 181 of the pair of extension members 120 is inserted into the dowel hole 182 of the first upper member 130X where the dowel 181 of section C was inserted in the stored state, thereby completing the switch from the stored state to the deployed state.

[0090] In switching from this stored state to the deployed state, the only upper members 130 that need to be completely pulled out and have their insertion positions changed are the two first upper members 130X into which the dowels 181 of parts B and C were inserted in the stored state. This reduces the effort required by the user to switch from the stored state to the deployed state and allows for a quicker switch.

[0091] Alternatively, instead of the dowel pins 181 and dowel holes 182, a lap joint may be formed on one of the upper member 130 or the upper frame 111, and the upper member 130 may be connected to the upper frame 111 by fitting the lap joint to the other upper member 130, or a lap joint may be formed on both the upper member 130 and the upper frame 111, and the upper member 130 may be connected to the upper frame 111 by fitting the lap joints together.

[0092] In the above embodiment, when stored, the dowel holes 182 in the upper frame 111 of the lateral members 110L and 110R and the dowel holes 182 in the upper frame 111 of the expansion members 120L and 120R are formed adjacent to each other, but the embodiment is not limited to this. Some of the dowel holes 182 in the upper frame 111 of the lateral members 110L and 110R may be left unformed, or some of the dowel holes 182 in the upper frame 111 of the expansion members 120L and 120R may be left unformed. In this case, the dowels 181 of the upper member 130 should be left unformed to match the dowel holes 182 of the upper frame 111 that are left unformed.

[0093] In the above embodiment, the lowest intermediate frame 114 of the extension members 120L, 120R is positioned at a height between the lowest intermediate frame 114 and the second lowest intermediate frame 114 of the lateral members 110L, 110R, but the embodiment is not limited to this. For example, the height of all the intermediate frames 114 of the extension members 120L, 120R may be the same as the height of the intermediate frames 114 of the lateral members 110L, 110R, or the height of some of the intermediate frames 114 of the extension members 120L, 120R may be the same as the height of the intermediate frames 114 of the lateral members 110L, 110R.

[0094] In the above embodiment, intermediate frames 114 are provided on the lateral members 110L, 110R and the extension members 120L, 120R, but the embodiment is not limited to this. For example, diagonal braces may be provided instead of intermediate frames 114.

[0095] In the above embodiment, bracing members 140 are provided on the vertical frames 113L and 113R on the rear sides of the pair of lateral members 110. However, the embodiment is not limited to this, and instead of bracing members 140, members that connect the rear sides of the pair of lateral members 110 in the horizontal direction may be provided.

[0096] In the above embodiment, a weight 161 is connected to the guy rope 160, but the invention is not limited to this, and other heavy objects such as sandbags or four-wheeled vehicles may be connected to the guy rope 160. Also, in the above embodiment, a through hole 131 is provided in the upper member 130, but the invention is not limited to this, and for example, a through hole 131 may be formed in the upper frame 111, the vertical frames 113L, 113R or the intermediate frame 114.

[0097] Furthermore, although through holes 131 are formed in all upper members 130, the invention is not limited to this, and through holes 131 may be omitted in some upper members 130.

[0098] Alternatively, instead of forming a through hole 131 in the upper member 130, a recess may be formed around the entire circumference of the upper member 130 and the guy rope 160 may be tied to the recess, or a member equivalent to the frame 170 (see Figure 3) may be provided on the upper member 130 and the guy rope 160 may be tied to that member.

[0099] In the above embodiment, the through hole 131 is formed outward from the outside of the lateral members 110L, 110R and the expansion members 120L, 120R in the deployed state, but it is not limited to this, and for example, in the deployed state, it may be formed inward from the outside of the lateral members 110L, 110R and the expansion members 120L, 120R.

[0100] In the above embodiment, the outer curtain BS, the privacy curtain SS, and the ceiling curtain CS are all attached to the shelf 100, but the embodiment is not limited to this, and the attachment of any one of the outer curtain BS, the privacy curtain SS, and the ceiling curtain CS may be omitted. For example, if the location where the shelf 100 is installed in its unfolded state is indoors and there are no buildings taller than the shelf 100, and the top of the shelf 100 is not visible to people around the shelf 100, the attachment of the ceiling curtain CS may be omitted.

[0101] In the above embodiment, one outer curtain BS covered the entire perimeter of the side of the unfolded shelf 100, but it is not limited to this, and multiple outer curtains BS may be used to cover the entire perimeter of the side of the unfolded shelf 100, or each side of the unfolded shelf 100 may be covered with one outer curtain BS, or two or three sides of the unfolded shelf 100 may be covered with one outer curtain BS and the other sides may be covered with one or more outer curtains BS. For example, one outer curtain BS may cover the back, left, and front sides of the unfolded shelf 100, and another outer curtain BS may cover the right and front sides of the unfolded shelf 100. In this way, two outer curtains BS are provided on the front side of the unfolded shelf 100, i.e., the entrance to the enclosed space, so even if the outer outer curtain BS is accidentally peeled back, the inner outer curtain BS (and the concealing curtain SS) can maintain the state in which the entrance to the enclosed space is covered.

[0102] In the above embodiment, the ceiling curtain CS was formed to match the size of the area above the shelf 100 when it is extended, but it is not limited to this, and the ceiling curtain CS may be formed to be larger than the size of the area above the shelf 100 when it is extended. This suppresses the formation of a gap between the ceiling curtain CS and the upper frame 111 or upper member 130, making the enclosed space more invisible from above.

[0103] Furthermore, although the outer curtain BS and the ceiling curtain CS are made of separate polyethylene sheets, the design is not limited to this, and the outer curtain BS and the ceiling curtain CS may be made of a single sheet. For example, one sheet may cover the entire perimeter of the sides of the shelf 100 and the top of the shelf 100, or one sheet may cover one, two, or three sides of the shelf 100 and the top of the shelf 100.

[0104] In the above embodiment, polyethylene sheets were used as the outer curtain BS, the privacy curtain SS, and the ceiling curtain CS, but the embodiment is not limited to these. For example, other sheet-like materials such as curtains, bedding sheets, or blankets may be used as the outer curtain BS, the privacy curtain SS, and the ceiling curtain CS.

[0105] In the above embodiment, the longitudinal dimension of the vertical frame 113R of the lateral member 110R and the extension member 120R is made smaller than the longitudinal dimension of the vertical frame 113L of the lateral member 110L and the extension member 120L, thereby creating a water slope in the ceiling curtain CS in the direction from the lateral member 110L and the extension member 120L toward the lateral member 110R and the extension member 120R, but the embodiment is not limited to this.

[0106] For example, the longitudinal dimension of the vertical frame 113R of the lateral member 110R and the extension member 120R may be the same as the longitudinal dimension of the vertical frame 113L of the lateral member 110L and the extension member 120L. Then, a member of a predetermined height (e.g., 20 mm) may be provided on the upper surface of the upper frame 111 of the lateral member 110L and the extension member 120L, and an upper member 130 may be provided on the upper surface of that member, thereby forming a water slope in the direction from the lateral member 110L and the extension member 120L toward the lateral member 110R and the extension member 120R.

[0107] Alternatively, the water slope may be directed from the lateral member 110R and extension member 120R towards the lateral member 110L and extension member 120L. Or, the water slope may be directed from the front side of the shelf 100 towards the back side. In this case, the height dimension of the upper member 130 should be the same, and the longitudinal dimensions of the vertical frames 113L and 113R of the lateral members 110L and 110R should be smaller than the longitudinal dimensions of the vertical frames 113L and 113R of the extension members 120L and 120R. This allows rainwater accumulated in the ceiling curtain CS to be drained to the back side of the shelf 100, thereby preventing rainwater drained from the ceiling curtain CS from flowing into the front side of the enclosed space.

[0108] In the above embodiment, the shelf board member 150 is provided on the lowest intermediate frame 114 and the second lowest intermediate frame 114 of the three intermediate frames 114 provided on the lateral members 110L and 110R. However, it is not limited to this, and the shelf board member 150 may be provided on all three intermediate frames 114 of the lateral members 110L and 110R. This ensures that the shelf board member 150 is provided on the uppermost intermediate frame 114 closest to the frame 170, thereby increasing the rigidity of the vertical frames 113L and 113R near the frame 170 and allowing for a stronger connection of the back sides of the pair of lateral members 110. Alternatively, the shelf board member 150 may be provided on only one or two of the intermediate frames 114 of the lateral members 110L and 110R. In this case, it is preferable to provide the shelf board member 150 on the uppermost or second highest intermediate frame 114.

[0109] The numerical values ​​listed in the above embodiment (for example, the number of intermediate frames 114 provided on the lateral member 110R, etc., and the number of dowel holes 182 formed in the upper frame 111) are merely examples, and it is naturally possible to use other numerical values. [Explanation of Symbols]

[0110] 100 shelves LG luggage 110L, 110R lateral members 120L, 120R extension members H hinge 111 Upper frame 112 Bottom frame 113 Intermediate slot 113L,113R Vertical frame 114 Intermediate slot 130 Upper member (connecting member) 131 Through hole (heavy object installation means) 140 Bracing members (connecting members) 150 shelf board components 160 guy ropes 161 Weight (heavy load) 170 mounting base 181 Dowel (upper first fixing means, upper second fixing means) 182 Dowel holes (side frame side fixing means, extension frame side fixing means) BS outer curtain SS blind CS ceiling curtain

Claims

1. It is a shelf for storing luggage, A pair of lateral members forming the side of the shelf, A connecting member that connects a pair of the aforementioned side members and enables the pair of aforementioned side members to stand independently, A shelf member is stretched between a pair of the aforementioned lateral members, on which the luggage is placed, A shelf characterized by comprising a pair of extension members that are pivotably attached via hinges to the front side of each of the pair of aforementioned lateral members.

2. The shelf according to claim 1, characterized in that the pair of extension members are configured to swing to a position where they overlap the outside of the pair of lateral members.

3. The aforementioned lateral member is, The upper frame and lower frame that form the upper and lower parts of the lateral member, A vertical frame connecting both ends of the upper frame and the lower frame, The shelf according to claim 1, further comprising an intermediate frame that connects the vertical frames in the horizontal direction.

4. The shelf according to claim 3, characterized in that the extension member comprises the upper frame, the lower frame, the vertical frame, and the intermediate frame.

5. The shelf according to claim 4, characterized in that the intermediate frame of the lateral member and the intermediate frame of the extension member are provided at different height positions.

6. The aforementioned connecting member is An upper member that connects at least the upper frames of a pair of the aforementioned side members, The shelf according to claim 4, further comprising a bracing member that intersects and connects the vertical frames on the back sides of a pair of the aforementioned lateral members.

7. The upper member connects at least the upper frames of the pair of extension members, The shelf according to claim 6, characterized in that, in an unfolded state in which the pair of extension members are swung toward the front side of the pair of lateral members, the number of upper members provided at the front ends of the pair of extension members is greater than the number of upper members provided at the rear ends of the pair of lateral members.

8. The pair of extension members are configured to swing to a position where they overlap the outside of the pair of lateral members. The upper frame of the aforementioned lateral member is provided with a lateral frame side fixing means. The upper frame of the expansion member is provided with an expansion frame side fixing means. When the pair of extension members are swung to a position where they overlap the outside of the pair of lateral members, the lateral frame side fixing means and the extension frame side fixing means are adjacent to each other. The shelf according to claim 6, characterized in that the upper member is provided with an upper first fixing means that engages with the lateral frame side fixing means and an upper second fixing means that engages with the extension frame side fixing means.

9. The upper first fixing means is a fixing device that can be inserted into and removed from the side frame fixing means. The shelf according to claim 8, characterized in that the upper second fixing means is a fixing device that can be inserted into and removed from the expansion frame side fixing means.

10. The shelf is provided with a sheet-like outer curtain that covers the sides of the shelf in an extended state, where the pair of extension members are swung toward the front side of the pair of lateral members. The shelf according to claim 8, characterized in that the outer curtain is attached to the upper frame.

11. The shelf according to claim 10, characterized in that the outer curtain is a single outer curtain wrapped around the side of the shelf in the unfolded state in the circumferential direction.

12. Two upper members are provided at the front ends of the pair of extension members in the unfolded state. The outer curtain is attached to the upper member on the front side of the extension member, one of the two upper members. The shelf according to claim 10 or 11, characterized in that a sheet-like cover is attached to the upper member on the back side of the extension member, which is one of the two upper members.

13. The shelf according to claim 12, wherein the upper member to which the blind is attached is provided on the front side of the shelf member in a plan view when the pair of extension members are swung to a position where they overlap the outside of the pair of lateral members.

14. A sheet-like ceiling curtain is attached to the upper part of the aforementioned upper member. The shelf according to claim 8, characterized in that the height of one side on the upper surface of the ceiling curtain is higher than the height of the other side opposite to the one side.

15. The aforementioned one side is one side in the direction in which the upper member extends, The shelf according to claim 14, characterized in that the other side is the other side in the direction in which the upper member extends.

16. Two of the aforementioned bracing members are provided. The shelf according to claim 6, characterized in that a support frame is provided on the inside of the vertical frame of the pair of lateral members at a predetermined distance apart in the vertical direction.

17. The shelf according to claim 16, characterized in that the shelf board member connects the intermediate frames or lower frames of a pair of the lateral members.

18. The shelf according to claim 8, characterized in that the upper member is provided with means for securing guy lines attached to a heavy object.

19. The shelf according to claim 18, characterized in that the heavy object mounting means is provided on the upper member outside the lateral member or the extension member when the upper member is fixed to the lateral member or the extension member in an extended state in which the pair of extension members are swung toward the front side of the pair of lateral members.

20. The shelf according to claim 18 or 19, characterized in that the means for installing the heavy object is a through hole formed through the longitudinal end of the upper member.

21. The shelf according to any one of claims 1 to 11, characterized in that the shelf board member is configured to be detachable from a pair of the lateral members.

22. The shelf according to any one of claims 1 to 11, characterized in that the shelf is configured to be separable from the lateral member, the extension member, the connecting member, and the shelf board member.

23. The shelf according to claim 16, characterized in that the upper frame, lower frame, vertical frame, intermediate frame, upper member, bracing member, and base are made of wooden square timber.

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