JP2010229654A - Stairs for assembling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide stairs for assembling attaining easy and quick assembling work. <P>SOLUTION: The stairs for assembling includes a post group constituted by arranging a plurality of posts 7 in rows along a longitudinal direction, and a plurality of storage bodies 2 having upper and lower plate parts 3, 4 and spacer parts 5 holding a space between the upper and lower plate parts 3, 4 to store stored objects between the upper and lower plates. The storage bodies 2 have through-holes for the predetermined posts to penetrate, at the specific parts of the outer peripheral edges, and the plurality of storage bodies 2 are vertically stacked with the posts 7 penetrating them to constitute a plurality of block bodies different in height so as to be higher toward the rear side. The posts 7 located at least on one side out of both sides in the lateral width direction of the storage bodies 2 located at the uppermost part of the plurality of block bodies out of the block body group arranged in rows are projected upward from the storage bodies 2 to compose a handrail 9 of the projected posts. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an assembling staircase provided, for example, for ascent to a loft.

  Conventionally, as an assembly staircase, for example, a plurality of furniture having different heights and widths, specifically, a plurality of drawer-shaped small-width furniture, a drawer-shaped medium-width furniture that is higher and wider than a small-width furniture, and a medium width A swing door type first wide furniture and second wide furniture that are wider and wider than furniture, and those assembled using these furniture have already been proposed (for example, Patent Document 1).

  The plurality of furniture is arranged in a line along the front-rear direction in order from the shortest furniture so that the drawers and hinged doors of each furniture can be pulled out or opened from the same direction in the left-right direction. By placing one or a plurality of small-width furniture on the rear upper surface of the medium-width furniture or wide-width furniture that is wide in the direction, it can be configured in a staircase shape.

  Moreover, the side plates of furniture adjacent in the front-rear direction are connected to each other with a connecting metal fitting so that all the furniture constituting the stairs assembled as described above are integrated. And the caster with a brake for moving each furniture easily is provided in the lower surface of each furniture so that the connection can be performed easily.

JP 2003-289964 A

According to the configuration of Patent Document 1, not only the furniture of the small-width furniture, the medium-width furniture, and the wide-width furniture must be arranged while being aligned in the left-right direction and the front-rear direction, but also the small-width furniture on the rear upper surface of the wide furniture. When stacking, the positioning of the upper small-width furniture in the front-rear direction and the left-right direction must be performed with respect to the lower wide-width furniture, so that the stacking operation cannot be performed quickly.
In addition, the work of connecting the side panels of furniture adjacent in the front-rear direction with the connecting bracket as described above is not only troublesome work, but also the operation of pulling out the disturbing drawer before connecting with the connecting bracket or the hinged door Work to keep open is required at the same time. Furthermore, the work of reassembling the drawer extracted after the connection and the work of closing the opened hinged door are necessary, so that the assembly work is very troublesome.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an assembly stair that can perform assembly work easily and quickly.

  The assembly staircase of the present invention is configured to solve the above-described problem, and is composed of a column group configured by arranging a plurality of columns in rows along at least the front-rear direction, the upper and lower plate portions, and the upper and lower plate portions. A plurality of storage bodies each having a spacer portion for holding a storage space between the upper and lower plate portions, and the storage body includes a through-hole that can penetrate a predetermined column. Blocks arranged in a row in a plurality of block bodies having different heights so as to become higher toward the rear side by stacking up and down by penetrating a plurality of storage bodies through the pillars in preparation at specific locations on the periphery A support column located on at least one side on both sides in the left-right width direction of the storage body located at the top of the plurality of block bodies in the body group is protruded upward from the storage body, and a handrail is configured by the protruded support column. As a feature That.

  According to the above configuration, a plurality of support columns are arranged in a line along the front-rear direction, and the predetermined number of storage columns are sequentially passed through the predetermined plurality of support columns in the front-rear direction. The storage bodies can be stacked in the up-down direction in the positioned state. Thus, a staircase can be comprised by stacking a storage body sequentially in the front-back direction, and comprising the block body from which height differs. And a support | pillar can be protruded upwards from a storage body, and a handrail can be comprised in the at least one side of the left-right width direction both sides of the storage body located in the uppermost part using the protruded support | pillar.

  Moreover, the support | pillar group which comprises the assembly staircase of this invention WHEREIN: A support | pillar may be located at intervals in the left-right direction.

  In the assembly staircase of the present invention, the handrail may be provided on both sides in the left-right width direction of the block body.

  In the assembling staircase of the present invention, the upper and lower plate portions are rectangular plate-shaped main bodies, and through holes in which the four pillars can be penetrated from the upper and lower directions at the four corners of the main body are formed. It may be comprised from the part.

  Further, in the assembly staircase of the present invention, the penetrating portion may be constituted by a cylindrical portion that is longer in the vertical direction than the plate thickness of the main body at the four corners of the main body.

  Further, the assembly staircase of the present invention may be configured such that a part or all of the plurality of projecting pillars are extended so that the upper ends thereof are in contact with the ceiling surface and function as a stretching rod, or separately. You may connect the rod comprised by the body.

  With the above configuration, the upper end of the projecting column contacts the ceiling surface, so the ceiling and floor surface can be fixed without fixing the lower end of the column to the floor surface, etc. The post can be fixed with a simple tool such as a screwdriver.

  Further, the assembly staircase of the present invention includes a block body in which the rear end of the front storage body and the front end of the rear storage body among the storage bodies adjacent in the front-rear direction are passed through the common left and right columns. May be configured.

  With the above configuration, the block body can be configured by penetrating the rear end of the front storage body and the front end of the rear storage body through the common left and right struts, so use a special connecting member. Instead, the front storage body and the rear storage body can be connected in the front-rear direction by the common left and right support columns.

  Moreover, the assembly staircase of the present invention may be configured such that the handrail connects the plurality of protruding pillars with a connecting member.

  As described above, according to the present invention, it is possible to stack the storage bodies in the vertical direction in a state where they are positioned in the front-rear direction only by sequentially passing the required number of storage bodies through the support columns, so that horizontal positioning with respect to the storage bodies is unnecessary. In addition, it is possible to eliminate the need for connection by a connecting metal fitting. Therefore, it is possible to provide an assembly stair that can perform assembly work easily and quickly.

The whole side view of one form of the assembled assembly steps is shown. The front view of the assembly staircase of FIG. 1 is shown. The disassembled perspective view of the storage body which comprises the assembly staircase of FIG. 1 is shown. The whole side view of the assembly staircase of the 2nd form which provided the tension rod is shown. The disassembled perspective view of the storage body of a 2nd form is shown. The disassembled perspective view of the storage body of a 3rd form is shown. The spacer part perspective view which comprises the storage body of a 4th form is shown. The disassembled perspective view of the storage body of a 5th form is shown. The whole side view of the assembly | attachment staircase of the 2nd form which penetrated and completed each accommodating body in four support | pillars in the front-back direction is shown.

  Hereinafter, an assembly staircase according to the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall side view of the assembly staircase assembled for ascending to the loft 1, FIG. 2 shows a front view of the assembly staircase of FIG. 1, and FIG. 3 shows the storage constituting the assembly staircase. An exploded perspective view showing the body 2 is shown. The loft refers to a room on the top floor or attic of a building, and is a space formed between the ceiling surface T in FIG.

  As shown in FIG. 3, the storage body 2 is capable of storing a stored item between the upper and lower plate portions 3, 4 while maintaining an interval between the upper and lower plate portions 3, 4 and the upper and lower plate portions 3, 4. And four spacer portions 5 for the purpose. Therefore, it is possible to accommodate the stored items between the upper and lower plate portions 3 and 4 through any one of the four openings formed between the two spacer portions 5 and 5 adjacent in the outer peripheral direction.

  Each of the upper and lower plate portions 3 or 4 includes a substantially rectangular and plate-like main body 3A or 4A, and a cylindrical portion 3B provided at the four corners of the main body 3A or 4A and longer in the vertical direction than the plate thickness of the main body. 4B. The four cylindrical parts 3B or 4B constitute a through part provided with a through hole 3b or 4b through which four circular columns 6, 7, 6, 7 described later arranged in the front, rear, left and right directions can be penetrated from above and below. is doing.

  The spacer portion 5 is formed of a cylindrical member having a through-hole 5A penetrating vertically. The spacer portion 5 penetrates through four columns 6, 7, 6, and 7 described later, and the lower surface and lower side of the upper cylindrical portion 3B The upper and lower plate portions 3 and 4 can be held at a predetermined interval in contact with the upper surface of the cylindrical portion 4B.

  The struts 6 and 7 and the storage body 2 may be made of any material as long as they have shape retaining properties, and can be made of, for example, synthetic resin, metal, wood, concrete, or the like. .

  As shown in FIGS. 1 and 2, the assembly staircase is a staircase for ascending to the edge 1 </ b> A constituting the lower side of the loft 1 by stacking a large number of storage bodies 2 on the floor surface 8. It is configured.

  Specifically, struts 6 and 7 composed of a pair of left and right circular pipes are arranged in two rows along the front-rear direction to form a strut group, and the front and rear four of these disposed struts 6 and 7 are arranged. By vertically passing the lower plate portion 4, the four spacer portions 5, and the upper plate portion 3 constituting the storage body 2 through the columns 6, 7, 6, 7, the upper and lower sides are positioned in the front-rear direction and the left-right direction. The storage bodies 2 can be stacked in the direction. As described above, it is possible to effectively form the storage space of the storage body 2 by making the four struts 6, 7, 6, 7 pass through the four corners of the storage body 2. The four struts 6, 7, 6, and 7 may not be configured to pass through the four corners of 2.

  Further, the storage body 2 positioned at the uppermost portion of the storage body 2 that penetrates and stacks the second, fourth, and sixth left and right support columns 6 and 7 in the front-rear direction of the support columns 6 and 7. The handrail 9 is formed by using the extended portions 6A and 7A. Here, handrails are provided on both the left and right sides of the assembly stairs. Since these handrails also have the purpose of preventing falling from the side when ascending and descending stairs, the specific configuration such as the shape and the number of parts can be freely changed.

  The handrail 9 is configured to be substantially parallel to the staircase by connecting the upper ends of the extension portions 6A, 7A of the second, fourth, and sixth left and right columns 6, 7 with a rod-shaped connecting member 10. Has been. Specifically, a cylindrical connecting portion 11A provided at the lower end of the cylindrical joint 11 is inserted into each of the upper ends of the three extending portions 6A and 7A, and the joint 11 is provided. The handrail 9 can be completed by inserting the connecting member 10 configured to penetrate through the joint 11 and fixing the connecting member 10 to the joint 11 with screws.

Next, the assembly procedure of the assembly steps will be described.
First, the pair of left and right support columns 6 and 7 are erected at intervals along the front-rear direction so that the rearmost support columns 6 and 7 are positioned near the vertical wall 13 extending to the edge 1 </ b> A of the loft 1. Standing up here means, for example, fixing a vibration isolating mat having a recess in the floor surface already embedded with female screws with a male screw and fixing the lower ends of the columns 6 and 7 to the recess of the vibration isolating mat. Various fixing members for fixing the lower ends of the columns 6 and 7 may be attached to the surface, and the lower ends of the columns 6 and 7 may be fixed to the attached fixing members.

  Next, the storage body 2 is penetrated through a total of 16 columns 6 and 7 erected as described above and stacked vertically. In FIG. 1, the rear end of the front storage body 2 and the front end of the rear storage body 2 among the storage bodies 2 adjacent in the front-rear direction are passed through the common left and right support columns 6, 7. With this configuration, the front storage body 2 and the rear storage body 2 can be connected in the front-rear direction by the common left and right support columns 6 and 7 without using a special connecting member. In the configuration of FIG. 1, the upper and lower plate portions 3, 4 are provided above and below the second, fourth, and sixth stage storage bodies 2 from the bottom between the upper and lower storage bodies 2 located at the rearmost position. By disposing the cylindrical spacer 12 without being arranged, a part of the rear surface of the rear end of the assembly staircase does not protrude rearward, and the rear surface of the rear end of the assembly staircase is formed in a substantially vertical plane. can do. Therefore, the assembly steps can be arranged as close to the wall surface of the vertical wall 13 as possible. If the struts are longer than 2m and hinder delivery, it can be divided into multiple pillars around 1m, and the joints of the split pillars are female threaded at the upper end of the lower pillars. In addition, the lower end portion of the upper column body may have a male screw portion so that it can be joined and divided.

  When the storage body 2 is passed through the 16 columns 6 and 7, for example, the first and second four columns 6, 7, 6, 7, the third and fourth positions located at the foremost position Four struts 6, 7, 6, 7, 5th and 6th struts 6, 7, 6, 7, 4th struts 6, 7, 6 located 7th and 8th , 7, the lower plate part 4, the four spacer parts 5, and the upper plate part 3 constituting the storage body 2 are sequentially penetrated to form the storage body 2 in the front-rear direction at the lowermost stage. Then, a total of four storage bodies 2 are installed.

  Next, the four columns 6,7,6,7 located in the second and third positions, the fourth columns 6,7,6,7, the sixth and seventh positions positioned in the fourth and fifth positions The lower plate portion 4, the four spacer portions 5, and the upper plate portion 3 constituting the storage body 2 are sequentially passed through the four support columns 6, 7, 6, 7, respectively. In order to connect the storage bodies 2 to each other, the storage bodies 2 are arranged in the front-rear direction in the second stage in a state of being positioned above the storage bodies 2 and 2, and a total of three storage bodies 2 are installed. To do.

  Subsequently, the 4th column 6,7,6,7 located in the 3rd and 4th, the 4th column 6,7,6,7, 7th and 8th located in the 5th and 6th The lower plate portion 4, the four spacer portions 5, and the upper plate portion 3 constituting the storage body 2 are sequentially penetrated through the four support columns 6, 7, 6, 7, respectively, so that the above-described second stage In order to connect the storage bodies 2 to each other, the storage bodies 2 are configured in the front-rear direction on the third stage in a state of being positioned above the storage bodies 2 and 2, and a total of three storage bodies 2 are formed. Install.

  Further, the storage body 2 is configured on the four support columns 6, 7, 6, 7 positioned at the fourth and fifth positions, and the four support columns 6, 7, 6, 6, 7 positioned at the sixth and seventh positions, respectively. By sequentially passing through the lower plate portion 4, the four spacer portions 5, and the upper plate portion 3, it is positioned above the storage bodies 2 and 2 so as to connect the above-described third-stage storage bodies 2 to each other. In the state, the storage bodies 2 are configured alternately in the front-rear direction on the fourth stage, and a total of two storage bodies 2 are installed.

  Further, the storage bodies 2 are respectively attached to the four support posts 6, 7, 6, 7 positioned at the fifth and sixth positions, and the four support posts 6, 7, 6, 7 positioned at the seventh and eighth positions. By sequentially passing through the lower plate portion 4, the four spacer portions 5, and the upper plate portion 3, the above-described fourth-stage storage bodies 2 are connected to each other above the storage bodies 2 and 2. In the state where it is located, every other storage body 2 is configured in the front-rear direction on the fifth stage, and a total of two storage bodies 2 are installed.

  Further, the lower plate portion 4, the four spacer portions 5, and the upper plate portion 3 constituting the storage body 2 are sequentially passed through the four support columns 6, 7, 6, 7 positioned at the sixth and seventh positions. Thus, in order to connect the above-described fifth-stage storage bodies 2, one storage body 2 is installed in the sixth stage in a state of being positioned above the storage bodies 2 and 2.

  Finally, the lower plate portion 4, the four spacer portions 5, and the upper plate portion 3 constituting the storage body 2 are sequentially passed through the four columns 6, 7, 6, 7 located in the seventh and eighth positions. In order to connect the above-described sixth-stage storage bodies 2 to each other, one storage body 2 is installed on the seventh stage (the uppermost stage) in a state of being positioned above the storage bodies 2 and 2, The installation work of the container 2 is finished. In the eighth support columns 6 and 7, six spacers 12 are inserted as described above.

  By stacking the storage body 2 through the columns 6 and 7 in this way, a plurality of blocks (seven in FIG. 1) having different heights so that only one storage body 2 is increased toward the rear side in the front-rear direction. Make up body. Since the storage bodies 2 are arranged in a staggered manner in FIG. 1, these block bodies can connect the storage bodies 2 and 2 adjacent to each other in the front-rear direction while reducing the number of the storage bodies 2. .

  After the placement work of the storage body 2 is completed, as described above, the joint 11 is inserted into a total of six columns 6 and 7 extending from the storage body 2 on the left and right sides, and then the connecting member 10 is inserted into the joint 11. Then, the connecting member 10 is fixed to the joint 11 with screws to constitute the handrail 9, and the assembly operation of the assembly stairs is completed. A vibration isolation mat may be laid on the floor surface.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the above embodiment, the handrails 9 are provided on both sides in the width direction of the staircase. However, for example, when installing the staircase near the wall, the handrail on the wall side is omitted and the handrail is provided only on the side away from the wall. The structure to be made may be sufficient.

  Moreover, in the said embodiment, although the case where the storage body 2 of the same magnitude | size was stacked was shown, you may implement by stacking | stacking the storage body from which a magnitude | size differs only in part. Moreover, although it comprised so that only the storage body 2 for one block might become high at the back side, depending on the magnitude | size (height) of the up-down direction of the storage body 2, it comprised so that only the multiple storage bodies 2 might become high. May be.

  In the above embodiment, the lower ends of the columns 6 and 7 are fixed to the floor so that the columns can be erected. For example, as shown in FIG. By connecting another rod to the extending portions 6A and 7A (only the right side is shown in FIG. 4) of the columns 6 and 7 so as to contact the surface T and function as a tension rod, the columns 6 and 7 are connected. Even if the lower end of 7 is not fixed to the floor, the columns 6 and 7 can be erected, and a part of opening a hole in the floor surface 3 or attaching a fixing member can be reduced. In FIG. 4, only some of the columns 6 and 7 are performed. However, by performing all of the columns 6 and 7, it is possible to completely eliminate the need to make a hole in the floor surface 3 or attach a fixing member. In addition, by making the stretching action function between the ceiling surface T and the floor surface 3, the support columns 6 and 7 are erected, and a receiving portion for receiving the lower ends of the support columns 6 and 7 is provided in the lowermost storage body 2. In the case where it is provided, the struts 6 and 7 can be erected by functioning a stretching action between the ceiling surface T and the receiving portion of the lowermost storage body 2.

  If FIG. 4 is described in detail, a connecting portion 11B that opens upward is provided at the upper end of the joint 11 so that three members can be connected by the joint 11 shown in FIG. The lower end of the inner / outer double pipe 14 as another possible rod is inserted. The inner / outer double pipe 14 has an upper pipe portion 14A provided with a leg portion 14a contacting the ceiling surface T with a diameter larger than the pipe diameter, and an upper end inserted into the lower end of the pipe portion 14A. Is provided with a lower pipe portion 14B inserted into the connecting portion 11B, and a fixing screw 15 as a fixing means for preventing movement of the lower pipe portion 14B relative to the upper pipe portion 14A. Although FIG. 4 shows the case where another rod is connected to the extending portions 6A and 7A of the columns 6 and 7, the extending portions 6A and 7A can be extended to the ceiling surface T.

Moreover, you may comprise the storage body 2 shown in FIG. 3 as shown in FIGS.
5 shows a state in which the spacer portion 5 of FIG. 1 is integrated with the cylindrical portion 3B of the upper plate portion 3. That is, the storage body 2 is composed of two members, the upper plate portion 3 with the spacer portion 5 and the lower plate portion 4.

  FIG. 6 shows a case where the four spacer portions 5 shown in FIG. 1 are connected two by two by the connecting plate portion 16 and the spacer 5 portion is composed of two members. In this case, when accommodating a thing between the upper side plate part 3 and the lower side plate part 4, it will carry out through two opening formed in the left-right direction both sides.

  FIG. 7 shows a case where the four spacer portions 5 shown in FIG. 1 are connected at three locations in the circumferential direction by three connecting plate portions 17, 18, and 19 to form the spacer portion 5 from one member. Yes. In addition, the contents are taken in and out from a portion where one circumferential direction is opened.

  In FIG. 8, a rectangular plate portion 20 in which the cylindrical spacer portion 5 shown in FIG. 1 is integrated with a lower surface on one side of the main body 3 </ b> A constituting the upper plate portion 3, and the lower side The plate portion 21 is formed of a rectangular plate portion 21 that is integrated so as to face upward on one side upper surface of the main body 4A constituting the plate portion 4. Therefore, the storage body 2 is composed of two members, an upper plate portion 3 with a plate portion 20 and a lower plate portion 4 with a plate portion 21. Also in this case, similarly to FIG. 6, in the case where the stored item is stored between the upper plate portion 3 and the lower plate portion 4, it is performed through two openings formed on both sides in the left-right direction.

  Moreover, the assembly staircase shown in FIG. 9 may be used. That is, in FIG. 1, the rear end of the front storage body 2 and the front end of the rear storage body 2 of the storage bodies 2 adjacent in the front-rear direction are passed through the common left and right support columns 6, 7. The block body was configured by arranging in a shape. With this configuration, the front storage body 2 and the rear storage body 2 can be connected in the front-rear direction by the common left and right support columns 6 and 7 without using a special connecting member. While the number of the storage bodies 2 is reduced, it is possible to configure assembling steps with the same height, which is advantageous in terms of both the material surface and the assembling work surface. On the other hand, as shown in FIG. 9, without using the support columns 6 and 7 in common, the four support columns 6, 7, 6, 7 are arranged for each of the first to fifth storage bodies 2. Each storage body 2 is penetrated. That is, in FIG. 1, the total number of support columns 6 and 7 used in the fifth storage unit 2 from the front is 12 in total, whereas in FIG.

  Moreover, in the said embodiment, although the handrail 9 was comprised by connecting the connection member 10 to the extension part 7A of the support | pillar 7 protruded upwards, the extension part 7A of the protrusion support | pillar 7 was bent, and a handrail was comprised. May be. Further, the pair of left and right support columns 6 and 7 may be arranged in two rows along the front-rear direction, or may be one row or three or more rows.

  The assembling staircase of the present invention can be assembled and used in any place, whether indoors or outdoors, as long as it is necessary for ascending and descending as well as assembling to go up to the loft.

  DESCRIPTION OF SYMBOLS 1 ... Loft, 1A ... Edge part, 2 ... Storage body, 3 ... Upper plate part, 4 ... Lower plate part, 3A, 4A ... Main body, 3B, 4B ... Cylindrical part, 3b, 4b ... Through-hole, 5 ... Spacer Part, 5A ... through hole, 6,7 ... post, 6A, 7A ... extension part, 8 ... floor surface, 10 ... connecting member, 11 ... joint, 11A ... connecting part, 11B ... connecting part, 12 ... spacer, 13 ... vertical wall, 14 ... inner and outer double pipes, 14A ... upper pipe part, 14B ... lower pipe part, 14a ... leg part, 15 ... fixing screw, 16 ... connecting plate part, 17, 18, 19 ... connecting plate part, 20, 21 ... board part, T ... ceiling surface

Claims (8)

  Holds the space between the upper and lower plate parts while maintaining the distance between the upper and lower plate parts and the upper and lower plate parts. A plurality of storage bodies each having a spacer portion, and the storage body includes a through-hole through which a predetermined support can be penetrated at a specific position on an outer periphery, and the plurality of storage bodies are passed through the support. A plurality of block bodies having different heights so as to be higher toward the rear side by stacking up and down, and a storage body positioned at the top of the plurality of block bodies in a group of block bodies arranged in a row A stairs for assembling characterized in that a column positioned on at least one side on both sides in the left-right width direction protrudes upward from the storage body, and a handrail is constituted by the protruding column.   2. The assembly staircase according to claim 1, wherein the support columns are positioned at intervals in the left-right direction.   The assembly staircase according to claim 1 or 2, wherein the handrail is provided on both sides in the left-right width direction of the block body.   The upper and lower plate portions are composed of a rectangular and plate-shaped main body, and through portions in which through holes that can penetrate the four support columns from the vertical direction are formed at four corners of the main body. The assembly step according to any one of claims 1 to 3.   The assembly staircase according to claim 4, wherein the penetrating portion is formed of a cylindrical portion that is longer in the vertical direction than the plate thickness of the main body at four corners of the main body.   A part or all of the plurality of struts that protrude is extended from the struts so that the upper ends of the struts are in contact with the ceiling surface and function as a strut rod, or a separate bar is connected. The assembly step according to any one of claims 1 to 5, wherein   The block body is configured by penetrating the rear end of the front storage body and the front end of the rear storage body among the storage bodies adjacent in the front-rear direction through a common left and right support column. The assembly stairs according to any one of 1 to 6.   The assembly stair according to any one of claims 1 to 7, wherein the handrail is configured by connecting the plurality of struts projected by a connecting member.

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