How to install shelves and shelf boards

Abstract

To provide a shelf board that is stable even if fasteners such as screws for fixing the shelf board are not conspicuous and even if the shelf board is not fixed to the side boards on its sides and even if there are no reinforcing bars, the shelf board is stable. [Solution] The shelf (1) comprises an upper back panel (23U) and a lower back panel (23L) that are adjacent to each other vertically in front of a fixing portion (99) and are joined by a joint (25), a shelf panel (41) that is sandwiched between the upper back panel (23U) and the lower back panel (23L) at the joint of the joint (25) and protrudes forward from the joint, and fasteners (27) that are driven from the joint into the rear end of the shelf panel (41), the lower back panel (23L) or the upper back panel (23U), and the fixing portion (99).

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a shelf and a shelf board installation method. [Background technology]

[0002] Patent Document 1 discloses a storage unit. The storage unit includes a pair of side panels, a back panel, two reinforcing bars, two shelf panels, and a top panel. The side panels are erected parallel to each other. The back panel is placed against the rear end surfaces of the side panels, and screws are driven into the back panel and the side panels from behind the back panel. The reinforcing bar spans between the pair of side panels along the front surface of the back panel and is fixed to the back panel with screws driven from behind the back panel. The shelf panel spans between the pair of side panels. The sides of the shelf panel are fixed to the side panels with screws driven from the outside of the side panels. The rear ends of the shelf panels rest on the reinforcing bars. The rear ends of the shelf panels are fixed to the reinforcing bars with screws driven from above the shelf panels. The top panel rests on the upper ends of the pair of side panels and is fixed to the side panels with dowels and screws. The rear end of the top panel is placed against the upper end of the front surface of the back panel, and the top panel is fixed to the back panel with screws. If decorative paper is not attached to the surface of the storage unit, the screw heads will be exposed. Such screws will detract from the aesthetic appearance of the storage unit. Even if decorative paper is attached, the screw heads can cause unevenness, damage, and breakage in the decorative paper, thereby detracting from the aesthetic appearance of the storage unit. Reinforcement bars are provided to improve the stability of the shelves. The reinforcing bars protrude downward from the underside of the shelf and forward from the front of the back panel. Therefore, the reinforcing bars detract from the aesthetic appearance of the interior of the storage unit. If the shelf is not fixed to the side panels, the weight of the shelf and its contents will cause the shelf to come off the reinforcing bars. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-206845 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the technology disclosed in this specification is to make fasteners such as screws for fixing shelf boards less noticeable and to ensure the stability of the shelf boards even if the shelf boards are not fixed to the side panels on their sides and even if there are no reinforcing bars. [Means for solving the problem]

[0005] In order to solve the above problems, this specification discloses the following shelf and shelf board installation method. The following reference numerals in parentheses refer to Figures 1 to 5.

[0006] (Section 1) an upper back plate (23U) and a lower back plate (23L) adjacent to each other in the vertical direction in front of the fixing portion (99) and coupled to each other by a joint (25); a shelf board (41) that is sandwiched between the upper back plate (23U) and the lower back plate (23L) at the joint of the joint (25) and that protrudes forward from the joint; a fastener (27) driven from the joint into the rear end of the shelf board (41), the lower back board (23L) or the upper back board (23U), and the fixing portion (99); A shelf (1) equipped with:

[0007] According to paragraph 1, the fasteners 27 are driven into the rear end of the shelf 41, the lower back panel 23L or the upper back panel 23U, and the fixing portion 99 through the joints of the joints 25, so that the fasteners 27 are hidden in the joints. This contributes to improving the aesthetic appearance of the shelf 1, the lower back panel 23L, the upper back panel 23U, and the shelf 41. Since the shelf board (41) is sandwiched between the upper back board (23U) and the lower back board (23L) at the joint of the joint (25), the shelf board (41) is stable even if it is not fixed to the side board or partition board on its side, and even if it is not supported by a reinforcing bar from below. The shelf board 41 is sandwiched between the upper back board 23U and the lower back board 23L at the joint of the joint 25, and the shelf board 41 protrudes forward from the joint, making the joint less noticeable. This contributes to improving the aesthetic appearance of the shelf 1, the lower back board 23L, and the upper back board 23U.

[0008] (Section 2) The joint (25) is a joint with a scoop, a joint with a tongue, or a notch. A shelf (1) as described in paragraph 1.

[0009] According to the second paragraph, since the joint (25) is a scoop joint, a tongue joint, or a herringbone joint, the shelf board (41) is unlikely to come off from the joint of the joint (25).

[0010] (Section 3) The upper back plate (23U) and the lower back plate (23L) are joined together by the joint (25) without being bonded to each other. A shelf (1) according to paragraph 1 or 2.

[0011] According to paragraph 3, since no adhesive is used to join the upper back panel (23U) and the lower back panel (23L), there is no leakage of adhesive from the joints of the joints (25). Therefore, the aesthetic appearance of the shelf (1), shelf board (41), lower back panel (23L), and upper back panel (23U) is not impaired.

[0012] (Section 4) The joint (25) An upper recess (31U) formed on the rear surface of the lower end of the upper back plate (23U); an upper protrusion (33U) formed at the lower end of the upper back plate (23U) in front of the upper recess (31U) and protruding downward from a top surface (32U) within the upper recess (31U); a lower recess (35L) formed on the front surface of the upper end of the lower back plate (23L); a lower protrusion (37L) formed at the upper end of the lower back plate (23L) behind the lower recess (35L) and protruding upward from a bottom surface (36L) within the lower recess (35L); and The upper protrusion (33U) fits into the lower recess (35L) from above the rear end of the shelf board (41), The lower protrusion (37L) fits into the upper recess (31U) from below the rear end of the shelf board (41), The fastener (27) is driven into the rear end of the shelf board (41), the lower protrusion (37L), and the fixing portion (99). A shelf (1) according to claim 1 or 2.

[0013] According to paragraph 4, the upper convex portion (33U) fits into the lower recess (35L) from above the rear end of the shelf board (41), and the lower convex portion (37L) fits into the upper recess (31U) from below the rear end of the shelf board (41), thereby stabilizing the shelf board (41). The fasteners 27 are driven into the rear end of the shelf 41, the lower protrusions 37L, and the fixing portions 99, and the upper protrusions 33U fit into the lower recesses 35L from above the rear end of the shelf 41, so that the fasteners 27 are hidden by the upper protrusions 33U. This contributes to improving the aesthetic appearance of the shelf 1, the lower back panel 23L, the upper back panel 23U, and the shelf 41.

[0014] (Section 5) The shelf board (41) has a rising portion (43) rising from its rear end, The rising portion (43) is sandwiched between the lower convex portion (37L) and the upper convex portion (33U), The fastener (27) is driven into the rising portion (43), the lower protrusion (37L) and the fixing portion (99). A shelf (1) as described in paragraph 4.

[0015] According to paragraph 5, the rising portion 43 is sandwiched between the lower convex portion 37L and the upper convex portion 33U, which contributes to improving the stability of the shelf board 41. The fasteners 27 are driven into the rising portion 43, the lower convex portion 37L, and the fixing portion 99, which also contributes to improving the stability of the shelf board 41. In particular, even if a large moment is applied to the shelf board 41 and the load, the shelf board 41 will not fall off or come loose.

[0016] (Section 6) The shelf board (41) has a protruding edge (45) protruding rearward from the upper end of the rising portion (43), The protruding edge (45) is sandwiched between the upper end of the lower protrusion (37L) and the top surface (32U) in the upper recess (31U). A shelf (1) according to claim 5.

[0017] According to paragraph 6, the projection (45) is sandwiched between the upper end of the lower projection (37L) and the top surface (32U) of the upper recess (31U), which contributes to improving the stability of the shelf board (41).

[0018] (Section 7) The joint (25) A lower recess (135L) formed on the rear surface of the upper end of the lower back plate (23L); a lower protrusion (137L) formed at the upper end of the lower back plate (23L) in front of the lower recess (135L) and protruding upward from a bottom surface (136L) within the lower recess (135L); an upper recess (131U) formed on the front surface of the lower end of the upper back plate (23U); an upper protrusion (133U) formed at the lower end of the upper back plate (23U) behind the upper recess (131U) and protruding downward from a top surface (132U) within the upper recess (131U); and The lower protrusion (137L) fits into the upper recess (131U) from below the rear end of the shelf board (41), The upper protrusion (133U) fits into the lower recess (135L) from above the rear end of the shelf board (41), The fastener (27) is driven into the rear end of the shelf board (41), the upper protrusion (133U), and the fixing portion (99). A shelf (1) according to paragraph 1 or 2.

[0019] According to paragraph 7, the lower convex portion (137L) fits into the upper recess (131U) from below the rear end of the shelf board (41), and the upper convex portion (133U) fits into the lower recess (135L) from above the rear end of the shelf board (41), thereby stabilizing the shelf board (41). The fasteners 27 are driven into the rear end of the shelf 41, the upper protrusions 133U, and the fixing portions 99, and the lower protrusions 137L fit into the upper recesses 131U from below the rear end of the shelf 41, so that the fasteners 27 are hidden by the upper protrusions 133U. This contributes to improving the aesthetic appearance of the shelf 1, the lower back panel 23L, the upper back panel 23U, and the shelf 41.

[0020] (Section 8) The shelf (41) has a hanging portion (143) hanging down from its rear end, The hanging portion (143) is sandwiched between the lower convex portion (137L) and the upper convex portion (133U), The fastener (27) is driven into the hanging portion (143), the upper convex portion (133U) and the fixing portion (99). A shelf (1) as described in paragraph 7.

[0021] According to paragraph 8, the fact that the hanging portion (143) is sandwiched between the lower convex portion (137L) and the upper convex portion (133U) contributes to improving the stability of the shelf board (41). The fact that the fasteners (27) are driven into the hanging portion (143), the upper convex portion (133U), and the fixing portion (99) also contributes to improving the stability of the shelf board (41). In particular, even if a large moment is applied to the shelf board (41) and the load, the shelf board (41) will not fall off or come loose.

[0022] (Section 9) The shelf board (41) has a protruding edge (145) protruding rearward from the lower end of the hanging portion (143), The protruding edge (145) is sandwiched between the lower end of the upper protrusion (133U) and the bottom surface (136L) of the lower recess (135L). A shelf (1) according to claim 8.

[0023] According to the ninth aspect, the projection (145) is sandwiched between the lower end of the upper projection (133U) and the bottom surface (136L) in the lower recess (135L), which contributes to improving the stability of the shelf board (41).

[0024] (Section 10) The upper back plate (23U) and the lower back plate (23L) below it are arranged adjacent to each other in the vertical direction in front of the fixing portion (99), and before combining the upper back plate (23U) or the lower back plate (23L) with the joint (25), the rear end of the shelf plate (41) is combined with the upper end of the lower back plate (23L), and fasteners (27) are driven into the rear end of the shelf plate (41), the upper end of the lower back plate (23L), and the fixing portion (99). How to install the shelf (41).

[0025] According to paragraph 10, when the rear end of the shelf board (41) is assembled with the upper end of the lower back board (23L), and the fasteners (27) are driven into the rear end of the shelf board (41), the upper end of the lower back board (23L), and the fixing portion (99), and then the upper back board (23U) or the lower back board (23L) is assembled with the joints (25), the fasteners (27) are hidden in the joints. This contributes to improving the aesthetic appearance of the shelf (1), the lower back board (23L), the upper back board (23U), and the shelf board (41). The shelf board (41) is stable even if it is not fixed to the side boards or partition boards on its sides, and even if it is not supported by a reinforcing bar from below. The joints are not noticeable due to the shelf board (41), and the shelf (1), lower back board (23L) and upper back board (23U) have a good appearance.

[0026] (Section 11) The upper back plate (23U) and the lower back plate (23L) below it are arranged adjacent to each other vertically in front of the fixing portion (99), and before combining the upper back plate (23U) or the lower back plate (23L) with the joint (25), the rear end of the shelf plate (41) is combined with the lower end of the upper back plate (23U), and fasteners (27) are driven into the rear end of the shelf plate (41), the upper end of the upper back plate (23U), and the fixing portion (99). How to install the shelf (41).

[0027] According to paragraph 11, when the rear end of the shelf board (41) is assembled with the upper end of the lower back board (23L), and the fasteners (27) are driven into the rear end of the shelf board (41), the lower end of the upper back board (23U) and the fixing portion (99), and then the upper back board (23U) or the lower back board (23L) is assembled with the joints (25), the fasteners (27) are hidden in the joints. This contributes to improving the aesthetic appearance of the shelf (1), the lower back board (23L), the upper back board (23U) and the shelf board (41). The shelf board (41) is stable even if it is not fixed to the side boards or partition boards on its sides, and even if it is not supported by a reinforcing bar from below. The joints are not noticeable due to the shelf board (41), and the shelf (1), lower back board (23L) and upper back board (23U) have a good appearance. [Effects of the Invention]

[0028] The fasteners that secure the shelf board to the fixed part are not noticeable. The stability of the shelf board can be ensured even if the shelf board is not secured to the side panel on its side and there are no reinforcing bars. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a front view of the shelf. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II. [Figure 3] FIG. 3 is an exploded view of the area shown in FIG. [Figure 4] FIG. 4 is a vertical cross-sectional view. [Figure 5] FIG. 5 is an exploded view of the area shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0030] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0031] <1. Shelf> Fig. 1 is a front view of shelf 1. Fig. 2 is a vertical cross-sectional view taken along line II-II shown in Fig. 1. Fig. 3 is an exploded view of the area shown in Fig. 2.

[0032] The shelf 1 is installed indoors or outdoors. The shelf 1 is fixed to a fixed part 99 such as an exterior wall, interior wall, column, beam, or partition. An exterior wall refers to a wall that separates the inside and outside of a building, house, structure, warehouse, shed, vehicle, automobile, trailer house, cargo space, container, aircraft, or ship. An interior wall refers to a wall that separates the interior space of a building, house, structure, warehouse, shed, vehicle, automobile, trailer house, cargo space, container, aircraft, or ship. A partition wall, a dividing wall, or a bulkhead is a type of interior wall. When the fixed part 99 is a wall of a building, house, structure, warehouse, shed, or shed, the fixed part 99 may be a load-bearing wall or a non-load-bearing wall. A load-bearing wall refers to a wall that resists horizontal loads such as earthquake force or wind force in a building, house, structure, warehouse, shed, or shed. A non-bearing wall is a wall in a building, house, structure, warehouse, shed, or shed that does not have the ability to resist horizontal loads such as earthquake force or wind force. The fixing part 99 may be made of wood, reinforced concrete, metal (especially steel or aluminum alloy), resin, or carbon fiber, or a composite of two or more of these.

[0033] In the example shown in Figure 2, the fixed portion 99 is an exterior or interior wall of a wall-type building constructed using a panel construction method, particularly a wood panel adhesive construction method. Therefore, the fixed portion 99 is made of a wood wall panel, and the shelf 1 is located inside the building. The wood wall panel has a rectangular frame body and structural surface materials 97, 98 attached to both sides of the frame body. Auxiliary crosspieces may be assembled inside the frame body.

[0034] 2, the shelf 1 is installed indoors, so the gypsum board 91 is attached to the fixing portion 99, and the shelf 1 is fixed to the gypsum board 91 and the fixing portion 99 with the gypsum board 91 sandwiched between the shelf 1 and the fixing portion 99. If the shelf 1 is installed outdoors, a decorative board or exterior material is provided instead of the gypsum board 91. The shelf 1 may be fixed directly to the fixing portion 99 without using the gypsum board 91, the decorative board, or the exterior material.

[0035] The shelf 1 has a pair of side panels 11 and 13, a back panel assembly 21, a plurality of fasteners 27, a plurality of decorative sheets 29, and a plurality of shelf panels 41.

[0036] The side panels 11, 13 are made of wood, wood-based material, metal, resin, glass, or ceramic. Wood refers to solid wood, plywood, glued laminated wood, cross-laminated timber (CLT), or laminated veneer lumber (LVL). Wood board refers to medium-density fiberboard (MDF), hardboard, or insulation board. The side panels 11, 13 may have a cavity inside. The side panels 11, 13 may be made of processed sheet metal. The side panels 11, 13 may be assembled from parts. A decorative sheet may be attached to the surface of the side panels 11, 13. The side panels 11, 13 may be painted.

[0037] The side panels 11, 13 are arranged parallel to each other and spaced apart from each other in the horizontal direction. The side panels 11, 13 are abutted against the gypsum board 91 and stand vertically along the gypsum board 91. The side panels 11, 13 are fixed to the gypsum board 91 and fixing parts 99. Specifically, a pair of support members on the left and right are fixed to the gypsum board 91 and fixing parts 99 with fasteners such as screws, nails, staples, or tackers, and the side panels 11, 13 are respectively assembled to the pair of support members, thereby fixing the side panels 11, 13 to the gypsum board 91 and fixing parts 99. The side panels 11, 13 extend from the floor 7 to the ceiling 9.

[0038] When another shelf board is provided on the opposite side of the shelf board 41 with respect to the side board 11, the side board 11 is used as a partition board. When another shelf board is provided on the opposite side of the shelf board 41 with respect to the side board 13, the side board 13 is used as a partition board.

[0039] The back panel assembly 21 is formed in the shape of a rectangular plate. The back panel assembly 21 has long vertical sides and short horizontal sides that are shorter than the long sides. The back panel assembly 21 makes surface contact with the gypsum board 91 between the side panels 11 and 13. Fasteners 27, such as screws, nails, staples, or tackers, are driven into the back panel assembly 21, the gypsum board 91, and the fixing portions 99, thereby fixing the back panel assembly 21 to the gypsum board 91 and the fixing portions 99. In addition to being fixed by the fasteners 27, the back panel assembly 21 is also fixed to the gypsum board 91 with an adhesive. If the gypsum board 91 were not provided, the back panel assembly 21 would be directly adhered to the fixing portions 99. The fasteners 27 fix not only the back panel assembly 21 but also the shelf panels 41 to the fixing portions 99. The fasteners 27 are hidden and cannot be seen from the front. These points will be explained in detail later.

[0040] The back panel assembly 21 includes a plurality of back panels 23 arranged in the vertical direction. These back panels 23 may be made of wood or wood-based material. Wood refers to solid wood, plywood, glued laminated lumber, cross-laminated lumber, or laminated veneer lumber. Wood-based material refers to medium-density fiberboard, hard fiberboard, or soft fiberboard.

[0041] The vertically adjacent back panels 23 are not glued together, but are joined together using joints 25 such as a ladle joint, a tongue and groove joint, or a herringbone joint. These back panels 23 are connected flush along a vertical plane. The back panels 23 are fixed to the gypsum board 91 with adhesive.

[0042] The plurality of decorative sheets 29 are attached to the front surfaces of the plurality of back panels 23, respectively.

[0043] The shelf boards 41 are arranged in the vertical direction at intervals between the side boards 11 and 13. The shelf boards 41 may be arranged at equal intervals or at unequal intervals.

[0044] The shelf board 41 is made of metal, wood, wood-based material, resin, glass, or ceramic. The shelf board 41 may be made of metal, particularly stainless steel or aluminum alloy. When the shelf board 41 is made of metal, the shelf board 41 may be a processed sheet metal. A decorative sheet may be attached to the surface of the shelf board 41.

[0045] The rear end of the shelf board 41 is inserted into the joint of the joint 25, and its rear portion is sandwiched between the lower end of the back board 23 above the shelf board 41 and the upper end of the back board 23 below the shelf board 41. Fasteners 27 are driven from the joint of the joint 25 into the rear end of the shelf board 41, the lower of the vertically adjacent back boards 23, the gypsum board 91, and the fixing portion 99. The rear end of the shelf board 41, together with the lower of the vertically adjacent back boards 23, is fixed to the gypsum board 91 and the fixing portion 99 by the fasteners 27. A hole for passing the fastener 27 may be formed in the rear end of the shelf board 41.

[0046] The shelf boards 41 extend horizontally forward from the joints of the joints 25. The extending portions are parallel to each other. The extending portions form the main body of the shelf boards 41.

[0047] One side edge of the shelf board 41 is in contact with the side board 11. The other side edge of the side board 31 is in contact with the side board 13. The shelf board 41 is not supported by the side boards 11 and 13. However, the shelf board 41 may be supported by the side boards 11 and 13 by dowels or the like.

[0048] <2. Joints> An example of the joint 25 will be described in detail with reference to the exploded view of Fig. 3. In the following description, the back panel 23 above the shelf panel 41 and its components are designated by the letter "U." The back panel 23 below the shelf panel 41 and its components are designated by the letter "L."

[0049] As shown in FIG. 3, the joint 25 is a dipstick joint. The joint 25 has a recess 31U and a protrusion 33U formed at the lower end of the upper back plate 23U, and a recess 35L and a protrusion 37L formed at the upper end of the lower back plate 23L. The recess 31U is formed by cutting out a rectangular shape from the rear surface of the upper end of the upper back plate 23U. The recess 31U continues from one side edge to the other side edge of the upper back plate 23U. The protrusion 33U is located in front of the recess 31U. The protrusion 33U protrudes downward from a top surface 32U within the recess 31U. The protrusion 33U continues from one side edge to the other side edge of the upper back plate 23U. The thickness of the protrusion 33U is thinner than the overall thickness of the upper back plate 23U. The recess 35L is formed by cutting out a rectangular shape from the front surface of the upper end of the lower back plate 23L. The recess 35L continues from one side edge to the other side edge of the lower back plate 23L. The protrusion 37L is disposed behind the recess 35L. The protrusion 37L protrudes upward from the bottom surface 36L within the recess 35L. The protrusion 37L continues from one side edge to the other side edge of the lower back plate 23L. The thickness of the protrusion 37L is thinner than the overall thickness of the lower back plate 23L.

[0050] A recess 33U and a protrusion 35U are formed at the upper end of all the back plates 23 except the topmost back plate 23. A recess 35L and a protrusion 37L are formed at the lower end of all the back plates 23 except the bottommost back plate 23.

[0051] <3. Rear end of shelf> The rear end of the shelf board 41 will now be described in detail. As shown in Figure 3, the shelf board 41 has a rising portion 43 and a protruding edge 45 at its rear end. The rising portion 43 rises upward from the rear end of the shelf board 41. The rising portion 43 continues from one side edge of the shelf board 41 to the other side edge. The protruding edge 45 protrudes rearward from the upper end of the rising portion 43. The protruding edge 45 continues from one side edge of the shelf board 41 to the other side edge.

[0052] <4. Assembling the shelves> The assembly of the shelf board 41 at the joint 25 will now be described in detail. The protruding edge 45 is hooked onto the upper end 38L of the protrusion 37L. The rising portion 43 is in surface contact with the front surface of the protrusion 37L. The shelf board 41 protrudes forward from the front surface of the back board 23L from the lower end of the rising portion 43 along the bottom surface 36L of the recess 35L.

[0053] The fasteners 27 are driven from the front of the rising portions 43 into the rising portions 43, the protruding portions 37L, the gypsum board 91, and the fixing portions 99. As a result, the shelf board 41 is fixed to the gypsum board 91 and the fixing portions 99 together with the backboard 23L.

[0054] The protrusion 33U fits into the recess 35L from above the shelf board 41. The protrusion 37L fits into the recess 31U from below the shelf board 41. The rising portion 43 is sandwiched between the protrusions 33U and 37L. The protruding edge 45 is sandwiched between the upper end 38L of the protrusion 37L and the top surface 32U of the recess 31U. The rear end of the shelf board 41 is sandwiched between the lower end 34U of the protrusion 33U and the bottom surface 36L of the recess 35L in front of the protrusion 37L. The shelf board 41 protrudes forward from between the lower end 34U of the protrusion 33U and the bottom surface 36L of the recess 35L.

[0055] <5. How to install the shelves> The gypsum board 91 is fixed to the fixing portion 99 with adhesive or screws, etc. Then, the back boards 23 and the shelf boards 41 are alternately installed in order from the lowest back board 23 and the lowest shelf board 41 upward. The details are as follows.

[0056] An adhesive is applied to the rear surface of the lowermost back panel 23 or the plaster board 91, or both, to adhere the back panel 23 to the plaster board 91.

[0057] Next, the convex edge 45 of the lowest shelf board 41 is hooked onto the upper end 38L of the protrusion 37L, the rising part 43 of the lowest shelf board 41 is placed against the front surface of the protrusion 37L of the lowest back board 23, and the lowest shelf board 41 is extended forward from the front surface of the back board 23 along the bottom surface 36L in the recess 35L of the lowest back board 23 from the lower end of the rising part 43.

[0058] Next, fasteners 27 are driven from the front of rising portion 43 of the lowest shelf board 41 into rising portion 43, protruding portion 37L of the lowest backboard 23, gypsum board 91, and fixing portion 99. This fixes the lowest shelf board 41 together with the lowest backboard 23 to the gypsum board 91 and fixing portion 99.

[0059] Next, adhesive is applied to the rear surface of the second-lowest back panel 23 or the gypsum board 91, or both, and the back panel 23 is adhered to the gypsum board 91. At this time, the convex portion 33U of the second back panel 23 is fitted into the recess 35L of the lowest back panel 23 from above the lowest shelf board 41, and the convex portion 37L of the lowest back panel 23 is fitted into the recess 31U of the second-lowest back panel 23 of the lowest shelf board 41. In this way, the raised portion 43 of the lowest shelf 41 is sandwiched between the convex portion 33U of the second back panel 23 and the convex portion 37L of the lowest back panel 23, the convex edge 45 of the lowest shelf 41 is sandwiched between the upper end 38L of the convex portion 37L of the lowest back panel 23 and the top surface 32U of the recess 31U of the second back panel 23, and the rear end of the lowest shelf 41 in front of the convex portion 37L of the lowest back panel 23 is sandwiched between the lower end 34U of the convex portion 33U of the second back panel 23 and the bottom surface 36L of the recess 35L of the lowest back panel 23.

[0060] Thereafter, the shelf boards 41 and the back boards 23 are alternately installed in the same manner starting from the bottom.

[0061] After the topmost back panel 23 is installed, the side panel 11 is set up vertically to the left of the shelf panel 41 and fixed to the gypsum board 91 and fixing portion 99. The side panel 13 is set up vertically to the right of the shelf panel 41 and fixed to the gypsum board 91 and fixing portion 99. Note that the side panels 11 and 13 may be installed before the back panel 23 and shelf panel 41 are installed.

[0062] <6. Summary> The fasteners 27 are driven from the joints of the joints 25 into the rear end of the shelf board 41, the lower back board 23L, and the fixing portions 99, so that the fasteners 27 are hidden by the joints. This contributes to improving the aesthetic appearance of the shelf 1, the lower back board 23L, the upper back board 23U, and the shelf board 41.

[0063] Because shelf board 41 is sandwiched between upper back board 23U and lower back board 23L at the joint of joint 25, shelf board 41 is stable even if it is not fixed to side boards 11, 13 or supported from below by a reinforcing bar. Because joint 25 is a scoop joint, tongue and groove joint, or herringbone joint, shelf board 41 is unlikely to come loose from the joint of joint 25.

[0064] The shelf board 41 is sandwiched between the upper back board 23U and the lower back board 23L at the joint of the joint 25, and the shelf board 41 protrudes forward from the joint of the joint 25, so the joint is not noticeable. This contributes to improving the aesthetic appearance of the shelf 1, the lower back board 23L, and the upper back board 23U.

[0065] Since no adhesive is used to join the upper back panel 23U and the lower back panel 23L, there is no leakage of adhesive from the joints of the joints 25. Therefore, the aesthetic appearance of the shelf 1, the shelf panel 41, the lower back panel 23L, and the upper back panel 23U is not impaired.

[0066] When joint 25 is a scoop joint, upper convex portion 33U fits into lower recess 35L from above the rear end of shelf board 41, and lower convex portion 37L fits into upper recess 31U from below the rear end of shelf board 41, thereby stabilizing shelf board 41. Fastener 27 is driven into the rear end of shelf board 41, lower convex portion 37L, and fixing portion 99, and upper convex portion 33U fits into lower recess 35L from above the rear end of shelf board 41, so fastener 27 is hidden by upper convex portion 33U. This contributes to improving the aesthetic appearance of shelf 1, lower back panel 23L, upper back panel 23U, and shelf board 41.

[0067] The fact that the rising portion 43 of the shelf board 41 is sandwiched between the lower convex portion 37L and the upper convex portion 33U contributes to improving the stability of the shelf board 41. The fact that the fasteners 27 are driven into the rising portion 43, the lower convex portion 37L, and the fixing portion 99 contributes to improving the stability of the shelf board 41. In particular, even if the moment caused by the shelf board 41 and the load is large, the shelf board 41 will not fall off or come loose.

[0068] The projection 45 is sandwiched between the upper end of the lower projection 37L and the top surface 32U in the upper recess 31U, which contributes to improving the stability of the shelf board 41.

[0069] The energy used from production to disposal and disposal of wood and paper materials is less than the energy used from production to disposal and disposal of metal or concrete materials. Therefore, if wood or paper is used in the components of Shelf 1, Shelf 1 will contribute to the realization of a decarbonized society by promoting carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and to the achievement of the Sustainable Development Goals (SDGs).

[0070] <7. Variations> 4 and 5, the lower end of the upper back panel 23U may have a front-to-back inverted shape as shown in Figures 2 and 3, the upper end of the lower back panel 23L may have a front-to-back inverted shape as shown in Figures 2 and 3, and the rear end of the shelf board 41 may have a top-to-bottom inverted shape as shown in Figures 2 and 3. Specifically, the shape is as follows.

[0071] The joint 25 has a recess 131U and a protrusion 33U formed at the lower end of the upper back plate 23U, and a recess 135L and a protrusion 137L formed at the upper end of the lower back plate 23L. The recess 131U is formed by cutting out a rectangular shape from the front surface of the upper end of the upper back plate 23U. The recess 131U continues from one side edge to the other side edge of the upper back plate 23U. The protrusion 133U is located behind the recess 131U. The protrusion 133U protrudes downward from a top surface 132U within the recess 131U. The protrusion 133U continues from one side edge to the other side edge of the upper back plate 23U. The thickness of the protrusion 331U is thinner than the overall thickness of the upper back plate 123U. The recess 135L is formed by cutting out a rectangular shape from the rear surface of the upper end of the lower back plate 23L. The recess 135L continues from one side edge to the other side edge of the lower back plate 23L. The protrusion 137L is disposed in front of the recess 135L. The protrusion 137L protrudes upward from a bottom surface 136L within the recess 135L. The protrusion 137L continues from one side edge to the other side edge of the lower back plate 23L. The thickness of the protrusion 137L is thinner than the overall thickness of the lower back plate 23L.

[0072] Shelf board 41 has a hanging portion 143 and a protruding edge 145 at its rear end. Hanging portion 143 hangs down from the rear end of shelf board 41. Hanging portion 143 continues from one side edge of shelf board 41 to the other side edge. Protruding edge 145 protrudes rearward from the lower end of hanging portion 143. Protruding edge 145 continues from one side edge of shelf board 41 to the other side edge.

[0073] Convex edge 145 is hooked onto lower end 134U of protrusion 133U. Hanging portion 143 is in surface contact with the front surface of protrusion 133U. Shelf board 41 protrudes forward from the front surface of back board 23U from the upper end of hanging portion 143 along top surface 132U in recess 132U.

[0074] Fasteners 27 are driven from the front of hanging portion 143 into hanging portion 143, protrusion 133U, gypsum board 91, and fixing portion 99. In this way, shelf board 41 is fixed to gypsum board 91 and fixing portion 99 together with backboard 23U.

[0075] Protrusion 133U fits into recess 135L from above shelf board 41. Protrusion 137L fits into recess 131U from below shelf board 41. Hanging portion 143 is sandwiched between protrusions 133U and 137L. Flange 145 is sandwiched between lower end 134U of protrusion 133U and bottom surface 136L of recess 135L. The rear end of shelf board 41 is sandwiched between upper end 138L of protrusion 137LU and top surface 132U of recess 131L in front of protrusion 133U. Shelf board 41 protrudes forward from between upper end 138L of protrusion 137L and top surface 132U of recess 131U.

[0076] The lower protrusion 137L fits into the upper recess 131U from below the rear end of the shelf board 41, and the upper protrusion 133U fits into the lower recess 135L from above the rear end of the shelf board 41, so that the shelf board 41 is stabilized.

[0077] Fastener 27 is driven into rear end (hanging portion 143) of shelf board 41, upper convex portion 133U, and fixing portion 99, and lower convex portion 137L fits into upper recess 131U from below the rear end of shelf board 41, so fastener 27 is hidden by upper convex portion 133U. This contributes to improving the aesthetic appearance of shelf 1, lower back panel 23L, upper back panel 23U, and shelf board 41.

[0078] The fact that hanging portion 143 of shelf board 41 is sandwiched between lower convex portion 137L and upper convex portion 133U contributes to improving the stability of shelf board 41. The fact that fasteners 27 are driven into hanging portion 143, upper convex portion 133U, and fixing portion 99 also contributes to improving the stability of shelf board 41. In particular, even if the moment caused by shelf board 41 and the load is large, shelf board 41 will not fall off or come loose. The fact that convex edge 145 is sandwiched between the lower end of upper convex portion 133U and bottom surface 136L in lower recess 135L contributes to improving the stability of shelf board 41.

[0079] When installing the shelves, after the gypsum board 91 is fixed, the back boards 23 and the shelf boards 41 are installed alternately in order from the uppermost back board 23 and the uppermost shelf board 41 downwards. The details are as follows.

[0080] An adhesive is applied to the rear surface of the lowermost back panel 23 or the plaster board 91, or both, to adhere the back panel 23 to the plaster board 91.

[0081] Next, the convex edge 145 of the uppermost shelf board 41 is hooked onto the lower end 134U of the convex part 133U, the hanging part 143 of the uppermost shelf board 41 is placed against the front surface of the convex part 133U of the uppermost back board 23, and the uppermost shelf board 41 is extended forward from the front surface of the back board 23 along the top surface 132U in the recess 131U of the uppermost back board 23 from the upper end of the hanging part 143.

[0082] Next, fasteners 27 are driven from the front of hanging portion 143 of uppermost shelf board 41 into hanging portion 143, protrusion 133U of uppermost backboard 23, gypsum board 91, and fixing portion 99. In this way, uppermost shelf board 41 is fixed to gypsum board 91 and fixing portion 99 together with uppermost backboard 23.

[0083] Next, adhesive is applied to the rear surface of the second-from-the-top back panel 23 or to the gypsum board 91, or to both, and the back panel 23 is adhered to the gypsum board 91. At this time, the convex portion 137L of the second back panel 23 is fitted into the recess 131U of the uppermost back panel 23 below the uppermost shelf board 41, and the convex portion 133U of the uppermost back panel 23 is fitted into the recess 135L of the second-from-the-bottom back panel 23 of the uppermost shelf board 41. In this way, the hanging portion 143 of the top shelf 41 is sandwiched between 137L of the second back panel 23 and the convex portion 133U of the topmost back panel 23, the convex edge 145 of the top shelf 41 is sandwiched between the lower end 134U of the convex portion 133U of the topmost back panel 23 and the bottom surface 136L in the recess 135L of the second back panel 23, and the rear end of the top shelf 41 in front of the convex portion 133U of the topmost back panel 23 is sandwiched between the upper end 138L of the convex portion 137L of the second back panel 23 and the top surface 132U in the recess 131U of the topmost back panel 23.

[0084] Thereafter, the shelf boards 41 and the back boards 23 are alternately installed in the same manner starting from the top.

[0085] After the lowest back panel 23 is installed, the side panel 11 is set up vertically to the left of the shelf panel 41 and fixed to the gypsum board 91 and fixing portion 99. The side panel 13 is set up vertically to the right of the shelf panel 41 and fixed to the gypsum board 91 and fixing portion 99. Note that the side panels 11 and 13 may be installed before the back panel 23 and shelf panel 41 are installed.

[0086] <8. Summary> The above-disclosed embodiments have been made for the purpose of illustration and example only, and are not intended to limit the scope of the present invention, which should be interpreted by the terms of the claims. [Explanation of symbols]

[0087] 1 shelf 23U upper backboard 23L lower back plate 25 Joints 27 Fasteners 41 Shelf 99 Fixed part 31U,131U Upper recess 32U, 132U top 33U,133U Upper convex part 34U,134U bottom end 35L, 135L Lower recess 36L,136L bottom 37L, 137L Lower convex part 38L,138L upper end 143 Drooping part 145 Convex edge

Claims

1. An upper back plate and a lower back plate that are adjacent to each other in the vertical direction in front of the fixed portion and are interlocked with each other by a joint; a shelf board sandwiched between the upper back plate and the lower back plate at the joint of the joint and projecting forward from the joint; A fastener is driven from the joint into the rear end of the shelf board, the lower back board or the upper back board, and the fixing portion; A shelf equipped with:

2. The joint is a scoop joint, a joint with a rib, or a hash joint. The shelf of claim 1 .

3. The upper back plate and the lower back plate are joined together by the joint without being bonded to each other.

3. The shelf according to claim 1 or 2.

4. The joint is an upper recess formed on the rear surface of the lower end of the upper back plate; an upper protrusion formed at a lower end of the upper back plate in front of the upper recess and protruding downward from a top surface of the upper recess; a lower recess formed on the front surface of the upper end of the lower back plate; a lower protrusion formed on an upper end of the lower back plate behind the lower recess and protruding upward from a bottom surface within the lower recess; and The upper protrusion fits into the lower recess from above the rear end of the shelf board, The lower protrusion fits into the upper recess from below the rear end of the shelf board, The fastener is driven into the rear end of the shelf board, the lower protrusion, and the fixing portion.

3. The shelf according to claim 1 or 2.

5. The shelf board has a rising portion rising from its rear end, the rising portion is sandwiched between the lower convex portion and the upper convex portion, The fastener is driven into the rising portion, the lower protrusion, and the fixing portion. The shelf of claim 4.

6. The shelf board has a protruding edge that protrudes rearward from the upper end of the rising portion, The convex edge is sandwiched between the upper end of the lower convex portion and the top surface of the upper recess. The shelf of claim 5.

7. The joint is a lower recess formed on the rear surface of the upper end of the lower back plate; a lower protrusion formed on an upper end of the lower back plate in front of the lower recess and protruding upward from a bottom surface within the lower recess; an upper recess formed on a front surface of the lower end of the upper back plate; an upper protrusion formed at a lower end of the upper back plate behind the upper recess and protruding downward from a top surface within the upper recess; and The lower protrusion fits into the upper recess from below the rear end of the shelf board, The upper protrusion fits into the lower recess from above the rear end of the shelf board, The fastener is driven into the rear end of the shelf board, the upper protrusion, and the fixing portion.

3. The shelf according to claim 1 or 2.

8. The shelf board has a hanging portion hanging from its rear end, the hanging portion is sandwiched between the lower convex portion and the upper convex portion, The fastener is driven into the hanging portion, the upper protrusion, and the fixing portion. The shelf of claim 7.

9. The shelf board has a protruding edge that protrudes rearward from the lower end of the hanging portion, The convex edge is sandwiched between the lower end of the upper convex portion and the bottom surface of the lower recess. The shelf of claim 8.

10. The upper back panel and the lower back panel below it are arranged adjacent to each other in front of the fixing part, and before combining the upper back panel or the lower back panel with a joint, the rear end of the shelf panel is combined with the upper end of the lower back panel, and fasteners are driven into the rear end of the shelf panel, the upper end of the lower back panel, and the fixing part. How to install shelves.

11. The upper back panel and the lower back panel below it are arranged adjacent to each other in front of the fixing part, and before combining the upper back panel or the lower back panel with a joint, the rear end of the shelf panel is combined with the lower end of the upper back panel, and fasteners are driven into the rear end of the shelf panel, the upper end of the upper back panel, and the fixing part. How to install shelves.

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