Frame unit

Abstract

To provide a frame unit capable of changing respective arrangement positions of a usable space provided in an upper space of a room and a staircase accessing a usable space according to a layout of a room.SOLUTION: A frame unit 1 comprises: a frame 10 having a stage portion 11 above a floor L of a room R and arranged in the room R; and a staircase unit 20 having a staircase main body 40 and a moving mechanism 50 attached to the staircase main body 40 and moving the staircase main body 40 within the room R, and arranged together with the frame 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mount unit, and more particularly to a mount unit that is arranged in a room. [Background technology]

[0002] 2. Description of the Related Art There are known buildings in which at least a part of the upper space of a room is used as a loft space or the like (see, for example, Patent Document 1). The building described in Patent Document 1 has a first space that constitutes part of the interior space of a given floor, and a second space that is adjacent to the first space and has a floor higher than that of the first space. The second space has a loft space and an open space that is separated from the loft space by a partition and opens towards the first space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-172938 A Summary of the Invention [Problem to be solved by the invention]

[0004] Except for renovation work such as remodeling, room layouts are generally not changed from the time of construction to the time of demolition. However, in recent years, there has been a demand to change room layouts depending on the lifestyle and use of the room at the time. When changing the floor plan, it is also expected that the location of the space above the room that is used as a loft space or the like (hereinafter, the "used space") will also be changed. However, in the building described in Patent Document 1, the usable space is part of the building, so the location of the usable space cannot be freely changed. Even if the location of the usable space can be changed, the location of the stairs for accessing the usable space needs to be changed depending on the location of the usable space.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a mounting unit that makes it possible to change the respective positions of the utilization space provided in the upper space of a room, and the stairs accessing the utilization space, depending on the layout of the room. [Means for solving the problem]

[0006] The above-mentioned object is achieved by the mounting unit of the present invention, which comprises a mounting base arranged in a room and having a stage portion above the floor of the room, a staircase body, and a moving mechanism attached to the staircase body for moving the staircase body within the room, and which is installed together with the mounting base.

[0007] In the gantry unit of the present invention, the space above the stage included in the gantry can be used as a usable space. Therefore, the location of the usable space can be changed by changing the location of the gantry. Also, in the gantry unit of the present invention, the location of the stairs for accessing the usable space can be changed by moving the staircase unit. In this way, with the rack unit of the present invention, the locations of the utilization space provided in the upper space of the room and the stairs accessing the utilization space can be changed according to the layout of the room.

[0008] The staircase body may also have a side wall and two or more step boards fixed to the side wall, and each of the two or more step boards may be removably fixed to the side wall. With the above configuration, the side walls and step panels can be assembled and disassembled, and the stair unit can be moved appropriately to the desired position even if there is a narrow spot in the path of movement of the stair unit.

[0009] The staircase body may also have a first engagement portion arranged on the step, a second engagement portion arranged on the side wall and engaging with the first engagement portion, and a retaining portion that maintains the engagement state between the first engagement portion and the second engagement portion. With the above configuration, the step plate can be appropriately fixed to the side wall by maintaining the engagement between the first engagement portion and the second engagement portion, and the fixed state of the step plate to the side wall can be appropriately released by releasing the engagement between the first engagement portion and the second engagement portion.

[0010] In addition, one of the first engagement portion and the second engagement portion may include a protruding portion that protrudes downward, and the other of the first engagement portion and the second engagement portion may include a recessed portion that is recessed downward, the protruding portion having an outer surface that is inclined with respect to the vertical direction, and the recessed portion having an inner surface that is inclined corresponding to the outer surface, and the first engagement portion and the second engagement portion may be in an engaged state by the outer surface and the inner surface coming into contact with each other. With the above configuration, the engagement state between the first engagement portion and the second engagement portion is appropriately maintained, so that the step plate can be more appropriately fixed to the side wall.

[0011] Moreover, the second engagement portion may extend horizontally along the side wall, and the first engagement portion may engage with the second engagement portion at any one of a plurality of positions in the extension direction of the second engagement portion. With the above configuration, the position of the step plate in the extending direction of the second engagement portion can be changed with respect to the side wall.

[0012] Additionally, the holding portion may determine the position of the first engagement portion relative to the second engagement portion in the extending direction. With the above configuration, the position of the step plate in the extending direction of the second engagement portion can be appropriately determined with respect to the side wall.

[0013] The system may further include a fastener for fastening the base and the staircase unit in a detachable manner. With the above configuration, the frame and the staircase unit can be fastened in a detachable state.

[0014] The staircase body may be constructed by arranging two or more unitary units in the vertical direction, and the unitary units adjacent to each other in the vertical direction may be fastened to each other in a detachable state. With the above configuration, the number of units in the vertical direction can be increased or decreased, thereby making it possible to appropriately adjust the height of the staircase unit according to the height of the stand.

[0015] The side walls may also be configured to allow for switching sizes of steps secured to the side walls. With the above configuration, step boards of an appropriate size can be used depending on the layout of the room, etc.

[0016] In addition, at least one of a shelf board and an electrical device may be fixed to the side wall opposite to the side to which the step board is fixed. With the above configuration, shelves, electrical equipment, etc. can be fixed to the side walls.

[0017] A power cable for supplying power to electrical equipment may also be arranged on the side wall. With the above configuration, it is possible to supply power to electrical equipment fixed to the side wall. Effect of the Invention

[0018] According to the present invention, it is possible to provide a mounting unit that allows the positions of a utilization space provided in the upper space of a room and the stairs accessing the utilization space to be changed depending on the layout of the room, etc. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a gantry unit according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of a staircase unit according to one embodiment of the present invention; [Diagram 3] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Diagram 5] FIG. 4 is a cross-sectional view taken along line CC in FIG. [Figure 6]FIG. 11 is a side view of a staircase unit in a first modified example of a stand unit according to an embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along line DD in FIG. [Figure 8] FIG. 11 is a side view of a staircase unit in a second modified example of a stand unit according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention (hereinafter, the present embodiment) will be described in detail below with reference to the preferred embodiment shown in the accompanying drawings. In addition, the drawings show each component somewhat simplified and schematic in order to make the explanation easier to understand, and the size (dimensions) of each component and the intervals between components shown in the drawings are different from the actual ones. Furthermore, unless otherwise specified, the material and shape of each member used to implement the present invention can be arbitrarily set depending on the application of the present invention and the state of the art at the time of implementing the present invention.

[0021] In this specification, "orthogonal" and "vertical" include the range of error permitted in the technical field to which the present invention pertains. For example, "orthogonal" and "vertical" mean within a range of less than ±10° from strict orthogonal or vertical, and the error from strict orthogonal or vertical is preferably 5° or less, and more preferably 3° or less.

[0022] <<Overview of the gantry unit according to this embodiment>> An overview of a gantry unit according to this embodiment (hereinafter, gantry unit 1) will be described with reference to FIGS. The mount unit 1 is placed in at least one room in a building according to the layout of the room. In the example shown in FIG. 1, the mount unit 1 is placed in room R. The space above the mount unit 1 (more precisely, the stage section 11) can be used as, for example, a loft space. In this manner, the space above the stage section 11 that can be used as a loft space or the like is referred to as a "usable space S."

[0023] The "building" includes buildings for various purposes, such as a house, an office, a store, a facility such as a hospital or a school, and a building in a factory. Note that in this embodiment, the description will be given on the assumption that the "building" is a "house". A "room" refers to a space separated by a floor, a ceiling, and walls, and is not limited to a particular space, and may be, for example, a living room, a hallway, a corridor, etc.

[0024] As shown in FIG. 1, the stand unit 1 has a stand 10 arranged in a room R, a stair unit 20 arranged alongside the stand 10, and a fastener 30 that fastens the stand 10 and the stair unit 20 together.

[0025] In the following description, directions perpendicular to each other in the horizontal direction are referred to as the first direction and the second direction, as shown in Fig. 1. In this embodiment, the first direction is the direction in which the platform 10 and the staircase unit 20 are arranged side by side, and the second direction is the direction perpendicular to the arranged side by side direction and the vertical direction. The second direction also corresponds to the extension direction of the second engagement portion 45 (see Fig. 4) described later.

[0026] As shown in FIG. 1, the base 10 is made up of a stage portion 11 and a plurality of (four) support members 12 that support the stage portion 11 from below. The stage section 11 is located above the floor L of the room R. The stage section 11 is, for example, a plate section extending in the first direction and the second direction, and has a rectangular shape when viewed vertically. The material of the stage section 11 is not particularly limited, and may be, for example, metal, wood, etc. As described above, the usable space S exists above the stage section 11. Therefore, the stage section 11 also functions as the floor of the usable space S. The height of the stage section 11 may be set to, for example, the height of the floor of a general loft space, or may be set to a height that allows the space between the floor L and the stage section 11 to be used as a living space. The planar size of the stage section 11 may be set to, for example, the floor size of a general loft space. The support member 12 is, for example, a support column extending vertically, and extends downward from each of the four corners of the stage portion 11. The material of the support member 12 is not particularly limited, and may be, for example, metal, wood, etc. The stand 10 may be detachably fixed to at least one of the floor, the ceiling, and the wall of the room R by a fixing device (not shown).

[0027] 2, the staircase unit 20 has a staircase main body 40 and a movement mechanism 50. The staircase unit 20 is capable of standing on the floor L of the room R by itself. The staircase main body 40 functions as a staircase for accessing the stage portion 11 of the stand 10 from the floor L of the room R. The moving mechanism 50 is attached to the staircase main body 40, and is a mechanism for moving the staircase main body 40 within the room R. More specifically, the moving mechanism 50 is composed of casters 51 and legs 52 attached to the lower end of the staircase main body 40, as shown in Fig. 2. In this embodiment, the casters 51 are attached to one end side of the staircase main body 40 in the second direction, and the legs 52 are attached to the other end side of the staircase main body 40 in the second direction.

[0028] The casters 51 are rotating bodies that roll on the floor L when the staircase body 40 is moved. The casters 51 are also provided with a locking mechanism (not shown). When the casters 51 are locked by the locking mechanism, the rotation of the casters 51 is restricted. This restricts the movement of the staircase body 40. The leg 52 is a non-rotating body, and is, for example, block-shaped. The leg 52 prevents the staircase body 40 from tilting in the second direction. In other words, without the leg 52, the caster 51 side of the staircase body 40 is higher than the opposite side in the second direction, and the staircase body 40 tilts in the second direction. On the other hand, by attaching the leg 52 to the staircase body 40, the tilt of the staircase body 40 in the second direction can be prevented. In addition, the leg 52 can restrict the movement of the staircase body 40 in the first and second directions by the frictional force between the leg 52 and the floor L. When the staircase body 40 is to be moved, the casters 51 are unlocked, and with the legs 52 raised above the floor L, the staircase body 40 is moved in the movement direction.

[0029] As described above, in the gantry unit 1 according to this embodiment, the space above the stage portion 11 included in the gantry 10 can be used as the usable space S. Therefore, the arrangement position of the usable space S can be changed by changing the arrangement position of the gantry 10. Also, in the gantry unit 1, the arrangement position of the stairs (staircase main body 40) for accessing the usable space S can be changed by moving the staircase unit 20. Moreover, in the gantry unit 1, the staircase unit 20 has a movement mechanism 50. This makes it possible to easily install the staircase unit 20 next to the gantry 10.

[0030] <<Details of the gantry unit according to this embodiment>>

[0031] Next, the gantry unit 1 according to this embodiment will be described in detail with reference to Fig. 1 to Fig. 5. As described above, the gantry unit 1 has the stair unit 20, and the stair unit 20 has the stair body 40.

[0032] As shown in FIG. 1, the staircase body 40 has two side walls 41, 42, and two or more (nine in FIG. 1) step boards 43 fixed to the two side walls 41, 42.

[0033] The two side walls 41, 42 are disposed apart in the first direction. The two side walls 41, 42 are walls that stand up in the vertical direction and, for example, have a rectangular shape when viewed from the first direction. The material of the two side walls 41, 42 is not particularly limited and may be, for example, metal, wood, or the like. The casters 51 and legs 52 described above are attached to the lower end portions of each of the two side walls 41, 42. In the following, it is assumed that the two side walls 41 and 42 have the same configuration. Therefore, only the side wall 41 will be described, and the side wall 42 will be described as necessary. In addition, the side wall 41 and the side wall 42 may have different configurations.

[0034] As shown in Fig. 1, the nine step plates 43 are located between the two side walls 41 and 42 in the first direction. As shown in Fig. 2, when one end of the side wall 41 in the second direction is the front end and the other end of the side wall 41 in the second direction is the rear end, the nine step plates 43 are arranged upward as they proceed from the front end to the rear end. The direction in which the nine step plates 43 face is inclined at a predetermined angle (40 degrees in Fig. 2) with respect to the second direction.

[0035] Moreover, the step plate 43 is detachably fixed to each of the two side walls 41, 42. More specifically, the step plate 43 is a plate member having a longitudinal direction, and both ends of the step plate 43 in the longitudinal direction are detachably fixed to the inner surfaces of the side walls 41, 42.

[0036] In this way, in the stand unit 1, the step plate 43 is detachably fixed to each of the two side walls 41, 42. This makes it possible to assemble and disassemble the side walls 41, 42 and the step plate 43, and for example, even if there is a narrow spot in the movement path of the staircase unit 20, the staircase unit 20 can be appropriately moved to a desired position.

[0037] 1, in the rack unit 1, at least one of the shelf board M and the electrical equipment N may be fixed to the side opposite to the side to which the step plate 43 is fixed in the side wall 41. More specifically, the shelf board M, the electrical equipment N, etc. may be detachably fixed to the outer surface of the side wall 41 using, for example, a fastener such as a screw (not shown). When a plurality of shelf boards M are fixed to the outer surface of the side wall 41, the space surrounded by the plurality of shelf boards M may be used as a storage space for storing items. The electrical equipment N includes, for example, monitors such as televisions, lighting fixtures, and electrical outlets. In this manner, in the rack unit 1, the shelf boards M, the electrical equipment N, and the like can be fixed to the side walls 41.

[0038] The shelf board M is not limited to being fixed to the side wall 41, and may be formed integrally with the side wall 41 as a part of the side wall 41. In other words, the side wall 41 may have a protruding portion (corresponding to the shelf board M) that protrudes toward the rack 10.

[0039] 1, a power cable 48 for supplying power to the electrical equipment N may be disposed on the side wall 41. The power cable 48 may be built into the side wall 41, or may be disposed along the outer surface or inner surface of the side wall 41. This allows power to be supplied to the electrical equipment N attached to the side wall 41.

[0040] Here, as shown in Figure 3, the staircase main body 40 further has a first engagement portion 44, a second engagement portion 45 that engages with the first engagement portion 44, and a retaining portion 46 that maintains the engagement state between the first engagement portion 44 and the second engagement portion 45. The first engagement portion 44 is disposed on the step plate 43, and the second engagement portion 45 is disposed on the side wall 41. The retaining portion 46 is located above the first engagement portion 44 and restricts the upward movement of the first engagement portion 44. According to this configuration, by maintaining the engagement between the first engagement portion 44 and the second engagement portion 45, the step plate 43 can be appropriately fixed to the side wall 41. Moreover, by releasing the engagement between the first engagement portion 44 and the second engagement portion 45, the fixed state of the step plate 43 to the side wall 41 can be appropriately released.

[0041] More specifically, as shown in Fig. 3, the first engagement portion 44 is provided on an end surface in the longitudinal direction (first direction) of the step plate 43. The first engagement portion 44 is, for example, a member made of metal. The first engagement portion 44 includes a protruding portion 44a that protrudes downward. The protruding portion 44a has a shape in which the cross section of the protruding portion 44a becomes smaller toward the lower end of the protruding portion 44a. Note that the "cross section" refers to a cross section perpendicular to the vertical direction. The protruding portion 44a has an outer surface (hereinafter, the first inclined surface 44b) that is inclined with respect to the vertical direction. The inclination angle of the first inclined surface 44b is an acute angle with respect to the vertical direction.

[0042] The second engagement portion 45 is provided on the inner surface (the side surface on the step plate 43 side) of the side wall 41. The second engagement portion 45 is, for example, a metal member. As shown in FIG. 3, the second engagement portion 45 includes a recessed portion 45a recessed downward. The recessed portion 45a is shaped such that the cross section of the inner space surrounded by the recessed portion 45a becomes smaller toward the lower end of the recessed portion 45a. Note that the "cross section" refers to a cross section perpendicular to the vertical direction. The recessed portion 45a has an inner surface (hereinafter, second inclined surface 45b) that is inclined corresponding to the first inclined surface 44b. Note that the inner surface of the recessed portion 45a refers to the surface adjacent to the inner space surrounded by the recessed portion 45a. The inclination angles of the first inclined surface 44b and the second inclined surface 45b with respect to the vertical direction do not need to be exactly the same, and for example, the difference between the two inclination angles may be in the range of 0° to 5°.

[0043] Here, the first engaging portion 44 and the second engaging portion 45 are engaged with each other by the first inclined surface 44b and the second inclined surface 45b coming into contact with each other. In the engaged state, a so-called wedge-based force multiplication effect occurs. That is, compared to the force applied to the first engaging portion 44 and the second engaging portion 45, the force with which the first engaging portion 44 and the second engaging portion 45 actually bind each other increases according to the amount by which the protruding portion 44a enters the recessed portion 45a in the vertical direction (the amount of depression). In other words, by increasing the amount of depression of the protruding portion 44a, the protruding portion 44a is pushed into a narrower gap in the recessed portion 45a, and as a result, the force with which the first engaging portion 44 and the second engaging portion 45 bind each other becomes stronger. In this way, according to the gantry unit 1, the engagement state between the first engagement portion 44 and the second engagement portion 45 is appropriately maintained, so that the step plate 43 can be fixed to the side wall 41 more appropriately.

[0044] In this embodiment, as shown in Fig. 4, the second engagement portion 45 extends in the second direction along the side wall 41. For example, the second engagement portion 45 extends from one end to the other end of the side wall 41 in the second direction, and has a length in the second direction that is approximately the same as the length of the side wall 41. The recessed portion 45a is a groove extending in the second direction. In other words, the shape of the cross section perpendicular to the second direction in the second engagement portion 45 is the same at any position in the second direction. On the other hand, the first engagement portion 44 is shorter than the second engagement portion 45 in the second direction, and is, for example, approximately the same as the width of the step plate 43 in the second direction.

[0045] As shown in FIG. 4, the first engagement portion 44 engages with the second engagement portion 45 at any one of a plurality of positions in the second direction. More specifically, as shown in FIG. 4, a plurality of (three in FIG. 4) marking portions 47 are formed on the inner surface of the side wall 41. Here, the direction in which the nine step plates 43 face is inclined at a predetermined angle (40 degrees in FIG. 2) with respect to the second direction, as shown in FIG. 2. The predetermined angle is marked on the plurality of marking portions 47, and in the example shown in FIG. 4, 30°, 40°, and 50° are marked, respectively. More specifically, in FIG. 4, the first engagement portion 44 is disposed at a position "40°" corresponding to one of the plurality of marking portions 47. As a result, the step plate 43 is disposed at a position corresponding to the angle of 40° shown in FIG. 2. 4, the first engagement portion 44 may be disposed at a position corresponding to the other marked portion 47 (at an angle of 30° or 50° in FIG. 4). As a result, the step plate 43 is disposed at a position corresponding to the angle of 30° or 50° shown in FIG. In this manner, in the gantry unit 1, the position of the step plate 43 in the second direction can be changed with respect to the side wall 41.

[0046] As described above, the holding portion 46 has a function of holding the engaged state between the first engagement portion 44 and the second engagement portion 45. On the other hand, the holding portion 46 has a function of determining the position of the first engagement portion 44 relative to the second engagement portion 45 in the second direction. Specifically, as shown in Fig. 4, the holding portion 46 is, for example, block-shaped and has an upwardly recessed portion 46a at its lower end. The protruding portion 44a of the first engagement portion 44 engages with the recessed portion 46a. This determines the positions of the first engagement portion 44 and the holding portion 46 in the second direction. The holding portion 46 also has a positioning portion 46b. The positioning portion 46b is, for example, a through hole that penetrates in the vertical direction. With this through hole and a screw hole provided in the second engagement portion 45 overlapping, a bolt (not shown) is inserted into the through hole and the screw hole. This determines the positions of the second engagement portion 45 and the holding portion 46 in the second direction. As a result, the position of the first engagement portion 44 relative to the second engagement portion 45 in the second direction is determined via the holding portion 46.

[0047] In this manner, in the gantry unit 1, the position of the first engagement portion 44 relative to the second engagement portion 45 can be determined by the holding portion 46. This makes it possible to appropriately determine the position of the step plate 43 in the second direction relative to the side wall 41.

[0048] Next, the configuration of the fastener 30 will be described. As described above, the fasteners 30 fasten the frame 10 and the stair unit 20 together. More specifically, as shown in Fig. 3, the fastener 30 is located between the gantry 10 and the staircase unit 20 in the first direction, and fastens the end of the gantry 10 on the staircase unit 20 side to the end of the staircase unit 20 on the gantry 10 side. Note that the fastener 30 is not particularly limited as long as it is a means for fastening the gantry 10 and the staircase unit 20. Furthermore, the position and number of the fasteners 30 are not particularly limited.

[0049] The configuration of the fastener 30 will be described below by way of an example. In the following explanation, unless otherwise specified, it is assumed that the fastener 30 is attached to the frame 10 and the staircase unit 20.

[0050] As shown in FIG. 3, the fastener 30 has two first fixing members 31 and a second fixing member 32. One of the two first fixing members 31 is fixed to a side surface of the stage portion 11 facing the side wall 41. The other of the two first fixing members 31 is fixed to an outer surface (the side surface facing the stage portion 11) of the side wall 41. The first fixing member 31 is a shaft member, and the outer diameter of a head portion 31a of the first fixing member 31 is larger than the outer diameter of the parts other than the head portion 31a.

[0051] More specifically, as shown in FIG. 3, the second fixing member 32 has a plate-shaped base portion 32a and two extending portions 32b, 32c extending downward from the base portion 32a. The base portion 32a is disposed hanging over the upper surfaces of the stage portion 11 and the side wall 41. The two extension portions 32b, 32c are arranged apart in the first direction at the center of the base portion 32a in the first direction. More specifically, the extension portion 32b is adjacent to a side surface of the stage portion 11 and engages with the first fixing member 31 fixed to this side surface. The extension portion 32c is adjacent to a side surface (outer surface) of the side wall 41 and engages with the first fixing member 31 fixed to this side surface.

[0052] Here, the engagement state between the first fixing member 31 and the extending portions 32b, 32c will be described in more detail with reference to Fig. 5. In the following description, the engagement state between the first fixing member 31 and the extending portion 32b will be described, but the same applies to the engagement state between the first fixing member 31 and the extending portion 32c.

[0053] As shown in Fig. 5, the extending portion 32b has a notch portion 32d that engages with the first fixing member 31. The notch portion 32d is configured by cutting out one end of the extending portion 32b in the second direction. More specifically, the notch portion 32d is configured with a first portion 32f and a second portion 32g. The first portion 32f extends in the second direction from the end of the extending portion 32b in the second direction. The second portion 32g is continuous with the first portion 32f and extends upward (toward the base portion 32a) from the tip of the first portion 32f.

[0054] A method of fastening the fastener 30 configured as above to the platform 10 and the staircase unit 20 will be described. First, the first fixing member 31 is fixed to the side surface of the stage portion 11 and the side wall 41, respectively. Next, the platform 10 and the staircase unit 20 are arranged side by side at a predetermined arrangement position in the room R. After that, the second fixing member 32 is engaged with the first fixing member 31. Specifically, as shown in FIG. 5, the second fixing member 32 is slid in the second direction while the first fixing member 31 is positioned at the entrance of the first portion 32f. Then, after the first fixing member 31 reaches the tip of the first portion 32f, the second fixing member 32 is moved downward by its own weight, so that the first fixing member 31 is positioned at the second portion 32g.

[0055] According to the above configuration, when the staircase unit 20 attempts to move in a first direction relative to the frame 10, as shown in Figure 3, the head 31a of the first fixing member 31 abuts against the main surface of the extension portion 32b, thereby restricting the movement of the staircase unit 20 relative to the frame 10. In addition, when the staircase unit 20 attempts to move in the second direction relative to the frame 10, the first fixing member 31 abuts against the edge of the second part 32g, as shown in Figure 5, thereby restricting the movement of the staircase unit 20 relative to the frame 10.

[0056] In the above configuration, the distance H (see FIG. 3) between the platform 10 and the staircase unit 20 in the first direction may be changeable. For example, a slide mechanism (not shown) that is slidable in the first direction may be provided between the base portion 32a and the extension portion 32b or the extension portion 32c.

[0057] As described above, in the gantry unit 1, by engaging the first fixing member 31 with the second fixing member 32, the gantry 10 and the staircase unit 20 can be fastened in a detachable state.

[0058] <<Other embodiments>> Although one embodiment of the rack unit of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention. In addition, the present invention naturally includes its equivalents.

[0059] In the above embodiment, the staircase main body 40 has two side walls 41, 42, but for example, as shown in Figure 6, the staircase main body 40A may have a side wall 41A instead of side wall 41, or a side wall 42A instead of side wall 42. In the following, it is assumed that the two side walls 41A, 42A have the same configuration, and the side wall 41A will be described first, and the side wall 42A will be described as necessary.

[0060] As shown in FIG. 6, the side wall 41A is composed of two first extension members 61A, a plurality of (ten in FIG. 6) second extension members 62A, and a plurality of (nine in FIG. 6) panel members 63A. The first extension members 61A are extension members that extend in the vertical direction and are, for example, metal frames. The two first extension members 61A are disposed at an interval in the second direction. The second extending member 62A is an extending member extending in the second direction. The second extending member 62A is disposed between the two first extending members 61A in the second direction. More specifically, each of both ends of the second extending member 62A in the second direction is attached to each of the two first extending members 61A. The ten second extending members 62A are arranged at intervals in the vertical direction. The panel members 63A are plate members having a rectangular shape when viewed from the first direction, and each of the nine panel members 63A is disposed between first extension members 61A adjacent to each other in the vertical direction.

[0061] More specifically, the second extending member 62A has an extending portion 64 and a second engaging portion 65, as shown in FIG. The extension portion 64 is a square tube portion extending in the second direction. The extension portion 64 has an opening at the end on the side of the stand 10 in the first direction, and the internal space of the extension portion 64 communicates with the external space of the extension portion 64 through this opening. The opening extends in the second direction. As shown in FIG. 7, the first fixing member 31A, the shelf board M, the electrical equipment N, etc. can be disposed in the internal space of the extension portion 64 through the opening. Also, the power cable 48 can be disposed in the internal space of the extension portion 64 along the extension direction (second direction) of the extension portion 64. The second engagement portion 65 is provided at an end of the extension portion 64 on the opposite side to the opening in the first direction, and extends in the second direction. The second engagement portion 65 is formed integrally with the extension portion 64, for example. The second extending member 62A is, for example, a metal frame extending in the second direction, and the extending portion 64 and the second engaging portion 65 may be integrally formed from, for example, an aluminum extrusion material or the like.

[0062] In the above embodiment, the staircase body 40 is assumed to be one unit. However, this is not limited to this, and for example, as shown in Fig. 8, the staircase body 40B may be configured by arranging two or more unitary units 70B in the vertical direction, and the unitary units 70B adjacent to each other in the vertical direction may be fastened to each other in a detachable state. Note that the staircase main body 40B shown in Figure 8 differs from the staircase main body 40A shown in Figure 7 in that it has a first extension member 71B instead of the first extension member 61A, but since the configuration is the same in other respects, descriptions of everything other than the first extension member 71B will be omitted.

[0063] As shown in FIG. 8, the first extending member 71B is configured by arranging two or more extending pieces 71a in the vertical direction. The extending pieces 71a extend in the vertical direction. An engagement portion is provided at the vertical end of the extending pieces 71a to engage the ends of the extending pieces 71a adjacent in the vertical direction. The extending pieces 71a are fastened to each other in a detachable manner by a fastener (not shown) such as a screw, with the ends of the extending pieces 71a engaged with each other. As a result, the unit units 70B adjacent to each other in the vertical direction are fastened to each other in a detachable manner.

[0064] In this way, in the staircase body 40B, the vertically adjacent units 70B can be fastened to each other in a detachable state. This allows the number of units 70B in the vertical direction to be increased or decreased, and as a result, the height of the staircase unit 20 can be appropriately adjusted relative to the height of the frame 10.

[0065] In the above embodiment, it is assumed that a step plate 43 of a specific size is fixed to the side wall 41. However, this is not limited thereto, and for example, the side wall 41 may be configured so that the size of the step plate 43 fixed to the side wall 41 can be switched. This allows a step plate 43 of one size selected from a plurality of sizes of step plates to be fixed to the side wall 41. The size of the step plate is set by a combination of both the length in the longitudinal direction of the step plate and the width in the lateral direction of the step plate. For example, the same size means that both the length and width of the step plate are the same. On the other hand, different sizes means that at least one of the length and width of the step plate is different. The length of the step plate 43 may be selected from a range of 600 mm to 800 mm, for example, and the width of the step plate 43 may be selected from a range of 250 mm to 300 mm, for example. In this manner, with the above configuration, step boards 43 of an appropriate size can be used depending on the layout of the room R, etc. In addition, in order to further ensure safety when ascending and descending the stairs, it may be desirable to widen the tread surface of the step board 43. Even in such a case, the above-described configuration allows the use of a step board 43 of an appropriate size as the tread surface.

[0066] In addition, in the above embodiment, the gantry 10 does not have a moving mechanism, but this is not limited to this. For example, the gantry 10 may have a moving mechanism equivalent to the moving mechanism 50 of the stair unit 20.

[0067] 4, the second engagement portion 45 extends in the second direction along the side wall 41, and has, for example, a length approximately equal to the length of the side wall 41 in the second direction. However, this is not limited thereto, and, for example, the second engagement portion 45 may have a length approximately equal to that of the first engagement portion 44 in the second direction.

[0068] In addition, in the above embodiment, the first engagement portion 44 includes a protruding portion 44a and the second engagement portion 45 includes a recessed portion 45a, but this is not limited to this, and for example, the first engagement portion may include a recessed portion and the second engagement portion may include a protruding portion.

[0069] In the above embodiment, the platform 10 is located on the outer surface side of the side wall 41 (the surface to which the shelf board M and electrical equipment N are fixed) with respect to the staircase unit 20, as shown in Fig. 1. However, this is not limited thereto, and the platform 10 may be located adjacent to the rear end of the side wall 41 with respect to the staircase unit 20. In this case, the rear ends of the side walls 41 and 42 may be fastened to the stage portion 11 by fasteners not shown. [Explanation of symbols]

[0070] 1 Mounting unit 10 Mounting stand 11 Stage Section 12 Support member 20 Staircase unit 30 Fasteners 31, 31A First fixing member 31a head 32 Second fixing member 32a Base 32b,32c extension part 32d Notch 32f Part 1 32g 2nd portion 40,40A,40B Stair body 41,41A,42,42A side wall 43 tier board 44 First engagement portion 44a Protruding part 44b 1st slope 45,65 Second engagement part 45a Recessed part 45b 2nd slope 46 Holding part 46a Recess 46b Positioning part 47 Marking section 48 Power Cable 50 Moving mechanism 51 Caster 52 Legs 61A, 71B First extending member 62A Second extending member 64 Extension 63A Panel material 70B Unit 71a Extension piece H interval L floor M Shelf N Electrical Equipment Room R S Usage space

Claims

1. A stand having a stage portion above a floor of the room and disposed in the room; A stand unit comprising: a staircase unit having a staircase body; and a moving mechanism attached to the staircase body for moving the staircase body within the room, the staircase unit being attached to the stand.

2. The staircase body has a side wall and two or more step boards fixed to the side wall, The rack unit according to claim 1 , wherein each of the two or more step plates is removably fixed to the side wall.

3. The staircase unit of claim 2, wherein the staircase body has a first engagement portion arranged on the step plate, a second engagement portion arranged on the side wall and engaging with the first engagement portion, and a retaining portion that maintains an engaged state between the first engagement portion and the second engagement portion.

4. One of the first engagement portion and the second engagement portion includes a protruding portion that protrudes downward, the other of the first engagement portion and the second engagement portion includes a recessed portion recessed downward, The protruding portion has an outer surface that is inclined with respect to the vertical direction, the recessed portion has an inner surface that is inclined relative to the outer surface; The gantry unit according to claim 3 , wherein the first engaging portion and the second engaging portion are brought into the engaged state by the outer surface and the inner surface coming into contact with each other.

5. The second engagement portion extends horizontally along the side wall, The gantry unit according to claim 3 , wherein the first engagement portion is engaged with the second engagement portion at any one of a plurality of positions in an extending direction of the second engagement portion.

6. The gantry unit according to claim 5 , wherein the holding portion determines a position of the first engaging portion relative to the second engaging portion in the extending direction.

7. The rack unit according to claim 1 , further comprising a fastener for releasably fastening the rack and the staircase unit.

8. The staircase body is constructed by arranging two or more units in a vertical direction, The rack unit according to claim 1 , wherein the units adjacent to each other in the vertical direction are fastened to each other in a detachable manner.

9. The rack unit according to claim 2 , wherein the side walls are configured so that the sizes of the step plates fixed to the side walls can be changed.

10. The rack unit according to claim 2 , wherein at least one of a shelf board and an electrical device can be fixed to the side wall opposite to the side to which the step board is fixed.

11. The rack unit according to claim 10 , wherein a power cable for supplying power to the electrical equipment is arranged on the side wall.

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