How to assemble the bench

Abstract

To provide a bench for which an assembly operation of each member on a site can be efficiently performed while a transportation load is reduced by subdividing each member and saving weight.SOLUTION: A bench includes: a seat part 3 in which a plurality of rod-like bodies 31 is arrayed in parallel with spaces apart; and a pair of supporting legs 2, 2 which has a lower side to be made a grounding part 21 to be fastened on an installation surface, which is composed of a frame-like member having a seat part fastening surface 22 for the seat part 3 to be fastened on an upper part of the grounding part 21, and which is arranged with each part spaced apart. In the seat part 3, the plurality of rod-like bodies 31 is arranged in a manner lined up in parallel in a direction orthogonal to the pair of supporting legs 2, 2. Also, the plurality of rod-like bodies 31 is unitized by a seat part connecting member 5. By the seat part connecting member 5 being fastened on the seat part fastening surface 22 of the pair of supporting legs 2, 2, the seat part 3 is fastened to the pair of supporting legs 2, 2 in the unitized state.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a bench and a method for assembling the bench. [Background technology]

[0002] 2. Description of the Related Art Conventionally, benches are installed in waiting rooms at train stations and airports, public spaces such as department stores and mass retailers, and entertainment facilities such as parks and theme parks, for use by passersby and visitors for resting or eating. Conventionally, such benches have been used that have a seat having a roughly planar seating surface formed by arranging a number of rod-shaped bodies or the like on a number of support legs.

[0003] Conventional benches are installed by bringing an integrated unit consisting of multiple support legs and a seat consisting of multiple rod-shaped bodies to the construction site and either burying the lower parts of the support legs in the installation surface or fixing them with anchor bolts. However, the weight of the components that make up the above-mentioned bench reaches 70 kg in total, which makes it difficult for workers to transport and increases transportation costs. In addition, when the bench is delivered to the construction site as a single unit, foundation work is required in advance, which increases the work and cost of construction.

[0004] In order to solve the above problems, particularly those related to construction, a bench has been proposed in which, for example, at least four piles spaced apart in the front-to-back and left-to-right directions are buried in the installation surface, legs extending in the front-to-back direction are spanned across the tops of at least two of the front-to-back piles, screws pass through the bottom of the legs and are screwed into the tops of the piles, connecting fittings extending in the front-to-back direction are attached to the tops of the legs, and a seat extending in the left-to-right direction is supported by being spanned across the connecting fittings (see, for example, Patent Document 1).

[0005] According to the bench described in the cited document 1, by adopting the above-mentioned configuration, the construction work for forming the foundation is reduced to the task of embedding the piles, making it possible to carry out the work efficiently at the construction site. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2015-033433 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the bench described in Patent Document 1 has integrated components such as the legs and seat, and so, like conventional benches, it is heavy and bulky, which places a heavy burden on workers when transporting it and increases transportation costs.

[0008] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a bench and a bench assembly method that enables efficient assembly work of each component at a construction site while reducing the transportation load by dividing each component into small pieces and making them lighter. [Means for solving the problem]

[0009] In order to solve the above problems, the bench of the present invention How to assembleThe seat includes a seat having a plurality of rod-shaped bodies aligned parallel to each other with a space therebetween, and a pair of support legs each arranged apart from each other, the pair of support legs being made of a frame-shaped member having a seat fixing surface above the grounding portion, the lower side of which is a grounding portion fixed to an installation surface, the seat being fixed thereto. The seat is arranged so that the plurality of rod-shaped bodies are aligned parallel to each other in a direction perpendicular to the pair of support legs, and the plurality of rod-shaped bodies are unitized by a seat connecting member. The seat connecting member is provided with a bolt hole at a position corresponding to a slit provided by the spacing of the plurality of rod-shaped bodies, and the seat fixing surface of the pair of support legs is provided with a seat fixing hole at a position corresponding to the bolt hole provided in the seat connecting member. A bolt is inserted between the bolt hole provided in the seat connecting member and the seat fixing hole provided in the pair of support legs, and the bolt and a nut are screwed together to fix the seat connecting member to the seat fixing surface of the pair of support legs. The seat is fixed to the pair of support legs in a unitized state, the head of the bolt is formed in a polygonal shape in a plan view, and the head of the bolt engages in a slit between the multiple rod-shaped bodies in the seat to prevent rotation.

[0010] According to the present invention, as described above, the seat is provided with a plurality of rod-shaped bodies aligned in parallel and unitized by the seat connecting member, and the seat connecting member is fixed to the seat fixing surface of the pair of support legs, so that each component can be divided into small packages, for example, with a weight of 20 kg or less per package, making it easy for workers to transport to the construction site. In addition, since the seat is fixed to the pair of support legs in a unitized state, the work of fixing the seat to the pair of support legs with bolts and nuts at the bench construction site can be greatly simplified. Furthermore, since each component can be packed as a unit, the work of finely aligning each component with each other during construction can be omitted, resulting in better construction efficiency.

[0011] In the above-mentioned configuration, the bench of the present invention can adopt a configuration in which the seat connecting member is provided with a bolt hole at a position corresponding to the slit created by separating the multiple rod-shaped bodies, and the seat fixing surfaces of the pair of support legs are provided with seat fixing holes at positions corresponding to the bolt holes provided in the seat connecting member, and the seat connecting member is fixed to the pair of support legs by inserting a bolt between the bolt hole provided in the seat connecting member and the seat fixing holes provided in the pair of support legs and screwing the bolt and a nut together.

[0012] According to the present invention, as described above, the seat connecting member is fixed to the pair of support legs by inserting a bolt between the bolt hole provided in the seat connecting member and the seat fixing hole provided in the pair of support legs and screwing the bolt and nut together, so that the work of fixing the seat to the pair of support legs with bolts and nuts at the bench construction site can be greatly simplified. Also, the seat can be fixed to the pair of support legs with high positional accuracy.

[0013] The bench of the present invention, in the above-mentioned configuration, may further adopt a configuration in which the bench has a plurality of unitized seats, and the plurality of seats are aligned in parallel and fixed to the seat fixing surfaces of the pair of support legs.

[0014] According to the present invention, by providing a plurality of unitized seats as described above, even when assembling a bench with a large seat depth, each component can be divided into small parts with a small weight, as described above, making it easy for workers to transport to the construction site. In addition, even if the number of seats to be installed at the construction site increases, the work of fixing the seats to a pair of support legs with bolts and nuts can be simplified to the greatest extent possible.

[0015] The bench of the present invention, in the above-mentioned configuration, may further adopt a configuration including a band plate arranged between and parallel to the pair of support legs and attached to the bottom side of the unitized seat portion.

[0016] According to the present invention, by providing a band plate attached to the bottom side of the seat as described above, it is possible to ensure strength in the entire width direction even for a bench having a very wide width, for example, of 1200 mm or more.

[0017] The bench of the present invention, in the above-mentioned configuration, further comprises a back portion in which a plurality of rod-shaped bodies are aligned parallel to each other at a distance from each other and unitized by a back portion connecting member, and the pair of support legs further have an L-shaped cross section with a protruding portion that protrudes upward from the seat portion fixing surface and has a back portion fixing surface to which the back portion is fixed, and the back portion connecting member is fixed to the back portion fixing surfaces of the pair of support legs, so that a configuration can be adopted in which the back portion is fixed to the pair of support legs in a state in which the plurality of rod-shaped bodies are aligned parallel to each other in a direction perpendicular to the pair of support legs and unitized.

[0018] According to the present invention, as described above, the back portion is provided with a plurality of rod-shaped bodies aligned in parallel and unitized by the back portion connecting member, and the back portion connecting member is fixed to the back portion fixing surface of the protruding portion provided on the pair of support legs, so that, as described above, each member can be divided into small packages, for example, with a weight of 20 kg or less per package, making it easy for workers to transport to the construction site. In addition, since the back portion is fixed to the pair of support legs in a unitized state, like the seat portion, the work of fixing the back portion to the pair of support legs with bolts and nuts at the bench construction site can be greatly simplified. Furthermore, since each member can be packed as a unit, as described above, fine alignment work between each member can be omitted during construction, resulting in better construction properties.

[0019] In the bench of the present invention having the above configuration, it is more preferable that the plurality of rod-shaped bodies are made of hollow members.

[0020] According to the present invention, since the multiple rod-shaped bodies are made of hollow members, the unitized seat and back are lightweight, making it easier for workers to transport to the construction site and also reducing the load involved in attaching the unit to a pair of support legs at the construction site.

[0021] The method of assembling a bench of the present invention includes a seat portion in which a plurality of rod-shaped bodies are aligned in parallel with a gap between them, and a pair of support legs each arranged at a distance from each other, the lower side of which constitutes a grounding portion fixed to an installation surface and which is made of a frame-shaped member having a seat fixing surface above the grounding portion to which the seat portion is fixed, the seat portion being arranged so that the plurality of rod-shaped bodies are aligned in parallel in a direction perpendicular to the pair of support legs, and the plurality of rod-shaped bodies are unitized by a seat connecting member. The method of assembling a bench includes at least a grounding step of fixing the grounding portion to the installation surface while arranging the pair of support legs in parallel, a seat installing step of installing the unitized seat portion on the seat fixing surfaces of the pair of support legs so that the plurality of rod-shaped bodies are perpendicular to the pair of support legs, and a seat fixing step of fixing the seat connecting member to the seat fixing surface to fix the unitized seat portion to the pair of support legs.

[0022] According to the present invention, by adopting a method including a seat installation process of installing the unitized seat on the seat fixing surfaces of a pair of support legs as described above, and a seat fixing process of fixing the unitized seat to the pair of support legs by fixing a seat connecting member to the seat fixing surfaces, it becomes possible to construct the unitized seat to the pair of support legs by dividing each component into small parts with small weight, as described above, which reduces the load on workers at the construction site and significantly improves work efficiency when fixing the seat to the pair of support legs with bolts and nuts.

[0023] In addition, the bench assembly method of the present invention can be the above method, further comprising a back installation process in which the back, in which a plurality of rod-shaped bodies are aligned parallel to and spaced apart, and unitized by a back connecting member is installed on a back fixing surface provided on the pair of support legs so that the plurality of rod-shaped bodies are perpendicular to the pair of support legs, and a back fixing process in which the back connecting member is fixed to the back fixing surface, thereby fixing the unitized back to the pair of support legs.

[0024] According to the present invention, as described above, a configuration is further adopted which includes a back installation process in which the unitized back is installed on the back fixing surfaces of a pair of support legs, and a back fixing process in which the unitized back is fixed to the pair of support legs by fixing the back connecting member to the back fixing surface. As described above, this makes it possible to install each component in small portions with low weight, thereby reducing the load on workers at the construction site and significantly improving work efficiency when fixing the back to the pair of support legs with bolts and nuts. Effect of the Invention

[0025] As described above, the bench of the present invention has a seat in which a number of rod-shaped bodies are aligned in parallel and unitized by a seat connecting member, and the seat connecting member is fixed to the seat fixing surfaces of a pair of support legs. This makes it possible to divide each component into smaller packages, each weighing, for example, 20 kg or less, making it easier for workers to transport them to the construction site and reducing delivery costs. Also, by fixing the seat to a pair of support legs in a unitized state, the work of fixing the seat to the pair of support legs with bolts and nuts at the construction site can be greatly simplified. Furthermore, because each component can be packed as a unit, work such as fine alignment of each component during construction can be omitted, resulting in better workability. Therefore, by dividing each component into smaller pieces and making them lighter, the transportation load can be reduced, and assembly work of each component at the construction site can be carried out efficiently.

[0026] In addition, the bench assembly method of the present invention employs a method including a seat installation process in which the unitized seat is installed on the seat fixing surfaces of a pair of support legs, and a seat fixing process in which the unitized seat is fixed to the pair of support legs by fixing a seat connecting member to the seat fixing surfaces. This makes it possible to install each component in small pieces with small weight, as described above, reducing the burden on workers at the installation site and significantly improving the work efficiency when fixing the seat to a pair of support legs with bolts and nuts. Furthermore, since each component can be packed and transported as a unit, detailed alignment work between each component during installation can be omitted, resulting in better workability. Therefore, it is possible to efficiently assemble each component at the construction site while reducing the transportation load. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a schematic diagram of a bench according to one embodiment of the present invention, and is a perspective view showing a state in which a unitized seat and back are attached to a pair of support legs. [Diagram 2] FIG. 2 is a diagram for explaining a schematic diagram of a bench according to an embodiment of the present invention, and is a cross-sectional view taken along the line AA of the bench shown in FIG. [Diagram 3] FIG. 3 is a schematic cross-sectional view of a bench according to one embodiment of the present invention, in which the unitized seat and back are omitted from the cross-sectional view shown in FIG. 2. [Figure 4] FIG. 1 is a diagram for illustrating a bench according to one embodiment of the present invention, and is a plan view showing the unitized seat portion as viewed from the back side. [Diagram 5] FIG. 1 is a diagram for illustrating a bench according to one embodiment of the present invention, and is a plan view showing the unitized back portion as viewed from the rear side. [Figure 6] This is a diagram for illustrating a schematic diagram of a method for assembling a bench according to one embodiment of the present invention, and is an oblique view for illustrating the steps of a seat installation process for attaching a unitized seat to a pair of support legs and a seat fixing process. [Figure 7] This is a diagram that illustrates a schematic diagram of a method of assembling a bench according to one embodiment of the present invention, and is an oblique view for illustrating the steps of the back installation process and the back fixing process in which the unitized back is attached to a pair of support legs. [Figure 8] FIG. 13 is a schematic diagram illustrating another example of a bench according to an embodiment of the present invention, and is a perspective view showing an example in which only a unitized seat portion is attached to a pair of support legs. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, an embodiment of a bench and a method for assembling the bench according to the present invention will be described with reference to Figures 1 to 8. Note that the drawings used in the following description may show characteristic parts in an enlarged scale for the sake of convenience in order to make the characteristics easier to understand, and the dimensional ratios of each component may differ from the actual ones.

[0029] <Bench configuration> The configuration of the bench 1 of this embodiment will be described in detail below. FIG. 1 is a diagram for explaining the bench 1 of this embodiment, and is an oblique view showing a unitized seat 3 and back 4 attached to a pair of support legs 2, 2. FIG. 2 is a cross-sectional view taken along line AA of the bench 1 shown in FIG. 1. FIG. 3 is a schematic cross-sectional view showing the cross-sectional view shown in FIG. 2 with the unitized seat 3 and back 4 omitted. Moreover, Figure 4 is a plan view showing an example of the unitized seat portion 3 shown in Figure 1 as viewed from the back side, and Figure 5 is a plan view showing the unitized back portion 4 as viewed from the rear side. Furthermore, Figures 6 and 7 are figures explaining the assembly method of the bench 1 of this embodiment, where Figure 6 is an oblique view explaining the steps of the seat installation process and seat fixing process in which the unitized seat 3 is attached to a pair of support legs 2, 2, and Figure 7 is an oblique view explaining the steps of the back installation process and back fixing process in which the unitized back 4 is attached to a pair of support legs 2, 2.

[0030] 1 and 2, the bench 1 of this embodiment first comprises a seat 3 in which a number of rod-shaped bodies 31 are aligned in parallel at a distance from one another, and a pair of support legs 2 each spaced apart from one another, each of which is made of a frame-shaped member having a seat fixing surface 22 to which the seat 3 is fixed, the lower side of which serves as a ground contact portion 21 that is fixed to an installation surface S, above which the ground contact portion 21 is fixed. Furthermore, the bench 1 of this embodiment illustrated in Figs. 1 and 2 is roughly configured to comprise a back 4 in which a number of rod-shaped bodies 41 are aligned in parallel at a distance from one another.

[0031] More specifically, the seat 3 is arranged such that a number of rod-shaped bodies 31 are aligned parallel to a direction perpendicular to the pair of support legs 2, 2 made of a frame-shaped member, and the rod-shaped bodies 31 aligned parallel to each other are unitized by a seat connecting member 5 (see also FIG. 4). The seat connecting member 5 is fixed to the seat fixing surfaces 22 of the pair of support legs 2, 2, and the seat 3 is fixed to the pair of support legs 2, 2 in a unitized state.

[0032] Moreover, the pair of support legs 2, 2 in the illustrated example are provided so as to protrude upward from the seat fixing surface 22, and are provided with protruding portions 23 having back fixing surfaces 24 to which the back 4 is fixed. The back 4 is arranged so that a plurality of rod-shaped bodies 41 are aligned in parallel in a direction perpendicular to the pair of support legs 2, 2 made of frame-shaped members, and is unitized by a back connecting member 6 (see also FIG. 5). The back connecting member 6 is fixed to the back fixing surfaces 24 of the pair of support legs 2, 2, thereby fixing the unitized back 4 to the pair of support legs 2, 2.

[0033] In the following description, the side of the bench 1 where the user sits will be referred to as the front side, and the side opposite the side where the user sits, i.e., the side where the protrusion 23 shown in Figure 1 is provided, will be referred to as the back side.

[0034] The support leg 2 functions as a base for the bench 1 of this embodiment by attaching the above-mentioned seat portion 3 and back portion 4, and the ground contact portion 21 is fixed to an installation surface S made of concrete or the like, for example, by anchor bolts 7, etc. As described above, the support leg 2 has a seat fixing surface 22 to which the seat 3 is fixed above the ground contact portion 21. Furthermore, the support leg 2 in the illustrated example is configured to have a substantially L-shaped cross section, with a protruding portion 23 provided so as to protrude upward from the seat fixing surface 22 and having a back fixing surface 24 to which the back 4 is fixed.

[0035] The material for the support leg 2 is not particularly limited, but may be, for example, a plate-shaped metal material such as steel that has sufficient strength for use as a bench, and is configured as a frame-shaped member made of such a material. In the illustrated example, a pair of support legs 2, 2 are disposed spaced apart from each other and are configured to support the seat portion 3 and the back portion 4 near their respective ends.

[0036] The seat fixing surface 22 is disposed so as to be approximately parallel to the grounding portion 21 which is grounded on the installation surface S, that is, so as to be approximately horizontal. 2 (also see FIG. 3), the seat fixing surface 22 is provided with bolt avoidance holes 22a for avoiding interference with the co-fastening bolts 55 used to fix each of the rod-shaped bodies 31 to the seat connecting member 5. Furthermore, although not shown in FIGS. 2 and 3, the seat fixing surface 22 is provided with seat fixing holes at positions corresponding to the fixing bolt holes (bolt holes) 52 provided in the seat connecting member 5 (see FIG. 4 as well). Then, a fixing bolt (bolt) 57 is inserted between the fixing bolt hole 52 provided in the seat connecting member 5 and the seat fixing hole provided in the support leg 2, and the fixing bolt 57 is screwed into a fixing nut (nut) 58, whereby the unitized seat 3 including the seat connecting member 5 is fixed to the seat fixing surface 22. Further, in the seat fixing surface 22, the bolt avoidance holes 22a and the seat fixing holes are provided in a plurality so as to correspond to the number of the corresponding co-fastening bolts 55 and fixing bolts 57, respectively. In addition, the seat fixing hole is a loose hole relative to the threaded portion of the fixing bolt 57.

[0037] As described above, the protruding portion 23 is provided so as to rise from the back side (the back side of the bench 1) of the seat fixing surface 22, and the surface of the protruding portion 23 facing the seat fixing surface 22 and the surface facing upward are the back fixing surface 24. Moreover, the back fixing surface 24 of the example shown in FIG. 2 is an erect surface provided so as to be slightly inclined toward the back side of the bench 1.

[0038] 2 (also see FIG. 3), the back fixing surface 24 is provided with bolt avoidance holes 24a for avoiding interference with the co-tightening bolts 65 used to fix each of the rod-shaped bodies 41 to the back connecting member 6, and back fixing holes (not shown) for fixing the back connecting member 6 to the back fixing surface 24 by inserting the fixing bolts (bolts) 67 therethrough. Also, on the back fixing surface 24, the bolt avoidance holes 24a and back fixing holes are provided in a plurality so as to correspond to the number of the corresponding co-tightening bolts 65 and fixing bolts 67, respectively.

[0039] Furthermore, the support leg 2 in the illustrated example is provided with a bent portion 25 formed between the seat fixing surface 22 and the back fixing surface 24 so as to be hollowed out toward the back side of the bench 1. This bent portion 25 has a function of absorbing shock, for example, when a user of the bench 1 sits on the seat 3 and leans against the back.

[0040] Furthermore, although not shown in Figures 1 and 2, a total of two through holes are formed in the grounding portion 21 of the support leg 2 for inserting the above-mentioned anchor bolts 7 and fixing the support leg 2 to the installation surface S.

[0041] As described above, the seat 3 is formed by arranging a plurality of rod-shaped bodies 31 in parallel with a space therebetween, and these rod-shaped bodies 31 are arranged in parallel in a direction perpendicular to the pair of support legs 2, 2 made of frame-shaped members. The upper surfaces 31a of the rod-shaped bodies 31 form a seating surface for a user of the bench 1, and the lower surfaces 31b are attached to the seat connecting member 5.

[0042] The seat 3 provided in the bench of this embodiment is formed by attaching a plurality of rod-shaped bodies 31 aligned in parallel to a seat connecting member 5 and unitizing them. In the example shown in Fig. 2, a seat 3A(3) having three rod-shaped bodies 31 connected by a seat connecting member 5A is disposed near the front of the bench 1, and a seat 3B(3) having four rod-shaped bodies 31 unitized by a seat connecting member 5B is disposed near the back of the bench 1 (see also Fig. 4).

[0043] The material of the rod-shaped body 31 is not particularly limited, and for example, a plastic material, a metal material, or the like can be appropriately used. On the other hand, from the viewpoints of cost, weight reduction, etc., it is preferable that the rod-shaped body 31 is made of a hollow extrusion molded product using a plastic material, etc. Here, when the rod-shaped body 31 is made of a hollow extrusion molded product made of a plastic material, it is more preferable from the viewpoint of ensuring the strength of the resin molded product that a rib 31c is provided so as to traverse or longitudinally run through the internal space, as shown in the cross-sectional view of Fig. 2. Since the multiple rod-shaped bodies 31 are made of hollow members as described above, the unitized seat 3 is made lighter, making it easier for workers to transport it to the construction site and also reducing the load involved in the installation work on the pair of support legs 2, 2 at the construction site.

[0044] When a plastic material is used for the rod-shaped body 31, the type is not particularly limited and can be selected taking into consideration strength, weather resistance, etc. For example, one type can be selected from polyethylene, polypropylene, polyester, ABS resin, AAS resin, polycarbonate, etc., or multiple types can be selected and used in combination. Furthermore, when a hollow extrusion molded product made of a plastic material is used for the rod-shaped body 31, for example, a long extrusion molded product made of the above-mentioned material can be cut to an appropriate predetermined length and used.

[0045] As described above, the seat connecting member 5 connects multiple rod-shaped bodies 31 to form a unitized seat 3. In the example seat 3B(3) shown in Figure 4, the four rod-shaped bodies 31 are connected and unitized by the seat connecting member 5 by screwing together the co-fastening bolt 55 and the co-fastening nut 56.

[0046] The material of the seat connecting member 5 is not particularly limited, but like the support legs 2, a plate-shaped metal material, such as steel, that has sufficient strength for use as a bench is used.

[0047] As in the example shown in FIG. 4, the seat connecting member 5 is provided with through holes corresponding to the bolts and nuts shown in FIGS. Specifically, the seat connecting member 5 is provided with a common fastening bolt hole 51 through which a common fastening bolt 55 for fixing each of the rod-shaped bodies 31 is inserted. The seat connecting member 5 is also provided with a fixing bolt hole (bolt hole) 52 through which a fixing bolt 57 for fixing the seat connecting member 5 to the seat fixing surface 22 is inserted. In the seat connecting member 5 of the illustrated example, the common fastening bolt holes 51 are provided at four locations corresponding to the number of rod-shaped bodies 31 attached. In addition, in the seat connecting member 5 of the illustrated example, the fixing bolt holes 52 are provided at a total of five locations in three rows at positions corresponding to three slits secured by spacing the four rod-shaped bodies 31 apart. In addition, the fixing bolt holes 52 are provided at two locations (a total of four locations) along the length direction of the rod-shaped bodies 31 at positions corresponding to the two slits located on the outside among the three slits secured by spacing the four rod-shaped bodies 31 apart, and at one location corresponding to the slit located in the center. The seat connecting member 5 is fixed to the support leg 2 by inserting a fixing bolt 57 between the fixing bolt hole 52 provided in the seat connecting member 5 and the seat fixing hole 22a provided in the support leg 2 and screwing it into a fixing nut 58.

[0048] In the example seat portion 3B(3) shown in FIG. 4, as described above, the four rod-shaped bodies 31 are aligned in parallel with a space between them, and are connected and unitized by a total of three seat portion connecting members 5.

[0049] Here, it is more preferable that the seat 3 used in the bench 1 of this embodiment is unitized with the fixing bolt 57 already inserted into the fixing bolt hole 52 of the seat connecting member 5. In this way, by carrying the seat 3 to the construction site with the fixing bolt 57 already inserted into the fixing bolt hole 52, the positioning work of the fixing bolt 57 at the construction site can be omitted, and therefore the work of screwing the fixing nut 58 onto the fixing bolt 57 to fix the seat 3 to the pair of support legs 2, 2 can be performed more efficiently and easily. Furthermore, when transporting the seat 3 with the fixing bolts 57 attached to the unitized seat 3 in this manner, although not shown in the figures, a support material made of, for example, paper material can be inserted into the slits between the rod-shaped bodies 31, and transporting the seat 3 in this state can prevent the fixing bolts 57 from falling off. Furthermore, although not shown in the figures, the support material as described above can also be one that is integrated with the packaging material for packaging the seat 3.

[0050] As described above, the back 4 is formed by arranging a plurality of rod-shaped bodies 41 in parallel with a space therebetween, and these rod-shaped bodies 41 are arranged in parallel in a direction perpendicular to the pair of support legs 2, 2 made of frame-shaped members. One surface 41a of each of the rod-shaped bodies 41 serves as a backrest surface for a user of the bench 1, and the other surface 41b is attached to the back connecting member 6.

[0051] The back 4 of this embodiment is a unit in which a plurality of rod-shaped bodies 41 are aligned in parallel and attached to the back connecting member 6. In the example shown in Fig. 2, four rod-shaped bodies 41 are attached to the back connecting member 6 having a substantially L-shaped cross section, and three of these rod-shaped bodies 41 are arranged to face the seat 3 side and one rod-shaped body 41 is arranged to face upward.

[0052] As with the rod-shaped body 31 used in the seat 3, the material of the rod-shaped body 41 is not particularly limited, and for example, a plastic material, a metal material, or the like can be appropriately used. On the other hand, like the rod-shaped body 31 used in the seat portion 3, the rod-shaped body 41 is preferably made of a hollow extrusion molded product made of a plastic material from the viewpoints of cost and weight reduction. Even when the rod-shaped body 41 is made of a hollow extrusion molded product made of a plastic material, it is more preferable from the viewpoint of ensuring the strength of the resin molded product that a rib 41c is provided so as to traverse or longitudinally run the internal space, as shown in the cross-sectional view of Fig. 2. Since the multiple rod-shaped bodies 41 are made of hollow materials as described above, the unitized back portion 4 is made lighter, making it easier for workers to transport it to the construction site and also reducing the load involved in the installation work on the pair of support legs 2, 2 at the construction site.

[0053] Even when a plastic material is used for the rod-shaped body 41, the type is not particularly limited, and it can be selected taking into consideration strength, weather resistance, etc. For example, the same material as the rod-shaped body 31 used for the seat portion 3 described above can be used. Furthermore, even when a hollow extrusion molded product made of a plastic material is used for the rod-shaped body 41, for example, a long extrusion molded product made of the above-mentioned material can be cut to an appropriate predetermined length and used.

[0054] As described above, the back connecting member 6 connects multiple rod-shaped bodies 41 to form a unitized back portion 4. In the example back portion 4 shown in Figure 5, the four rod-shaped bodies 41 are connected and unitized by the back connecting member 6 by screwing together a co-fastening bolt 65 and a co-fastening nut 66. In addition, the back connecting member 6 shown in Figures 1, 2 and 5 is configured to have a roughly L-shaped cross section, so that, as described above, three rod-shaped bodies 41 are attached so as to face toward the seat portion 3, and one rod-shaped body 41 is attached so as to face upward.

[0055] The material of the back connecting member 6 is not particularly limited, but like the seat connecting member 5, a plate-shaped metal material, such as steel, that has sufficient strength for use as a bench is used.

[0056] As in the example shown in FIG. 5, the back connecting member 6 is provided with through holes corresponding to the bolts and nuts shown in FIGS. Specifically, the back connecting member 6 is provided with a common fastening bolt hole 61 through which a common fastening bolt 65 for fixing each of the rod-shaped bodies 41 is inserted. The back connecting member 6 is also provided with a fixing bolt hole 62 through which a fixing bolt 67 for fixing the back connecting member 6 to the back fixing surface 24 is inserted. In the example shown in FIG. 5, although some illustration is omitted, the common fastening bolt holes 61 are provided in the back connecting member 6 at a total of eight locations, two locations per rod-shaped body 41, corresponding to the number of rod-shaped bodies 41 to be attached. In addition, the back connecting member 6 in the illustrated example is provided with fixing bolt holes 62 at a total of four locations in two rows at positions corresponding to two slits arranged facing the seat portion 3 side among the three slits secured by separating the four rod-shaped bodies 41. The back connecting member 6 is fixed to the support leg 2 by inserting a fixing bolt 67 between a fixing bolt hole (bolt hole) 62 provided in the back connecting member 6 and a back fixing hole (not shown) provided in the support leg 2 and screwing it into a fixing nut 68.

[0057] In the back portion 4 of the example shown in FIG. 5, the four rod-shaped bodies 41 are aligned in parallel with a space therebetween, as described above, and are connected and unitized by a total of three back portion connecting members 6.

[0058] Here, it is more preferable that the back portion 4 used in the bench 1 of this embodiment is unitized in a state in which the fixing bolt 67 is inserted in advance into the fixing bolt hole 62 of the back portion connecting member 6, similarly to the case of the above-mentioned seat portion 3. By carrying the back portion 4 in such a state to the construction site, the positioning work of the fixing bolt 67 at the construction site can be omitted, and therefore the work of screwing the fixing nut 68 onto the fixing bolt 67 to fix the back portion 4 to the pair of support legs 2, 2 can be performed more efficiently and easily. Also in this case, as in the case of the above-mentioned seat portion 3, although illustration is omitted, a support material made of, for example, paper material can be inserted into the slits between the rod-shaped bodies 41 and transported in this state to prevent the fixing bolts 67 from falling off. Also, as in the case of the seat portion 3, it is possible to use a support material integrated with the packaging material for packaging the back portion 4.

[0059] According to the bench 1 of this embodiment, the above-mentioned configuration, that is, the seat 3 is provided with a plurality of rod-shaped bodies 31 aligned in parallel and unitized by the seat connecting member 5, and the seat connecting member 5 is fixed to the seat fixing surface 22 of the pair of support legs 2, 2, so that each member can be divided into small packages, for example, with a weight of 20 kg or less per package, which makes it easy for workers to transport to the construction site. Also, since the seat 3 is fixed to the pair of support legs 2, 2 in a unitized state, the work of fixing the seat 3 to the pair of support legs 2, 2 by screwing the fixing bolts 67 and the fixing nuts 68 at the construction site of the bench 1 can be greatly simplified. In addition, each component, such as the seat 3 and the back 4, can be packed and transported as a unit, which eliminates the need for detailed alignment work between each component during construction, resulting in better workability.

[0060] Conventionally, when each component constituting a bench is divided into small pieces and transported to a construction site, the burden on workers in terms of weight and transportation costs can be reduced, but there is a concern that the burden on assembly work at the construction site increases. In contrast, according to the bench 1 of this embodiment, even when each component constituting the bench is divided into small pieces, it is possible to reduce the labor involved in construction as much as possible and improve the efficiency of construction work.

[0061] In addition, since the seat connecting member 5 is fixed to the pair of support legs 2, 2 by inserting a fixing bolt 57 between the fixing bolt hole 52 provided in the seat connecting member 5 and the seat fixing hole 22a provided in the pair of support legs 2, 2 and screwing it with a fixing nut 58, the work of fixing the seat 3 to the pair of support legs 2, 2 at the construction site of the bench 1 can be greatly simplified, as described above. Also, it becomes possible to fix the seat 3 to the pair of support legs 2, 2 with good positional accuracy.

[0062] Furthermore, since the back 4 is provided with a plurality of rod-shaped bodies 41 aligned in parallel and unitized by the back connecting member 6, and the back connecting member 6 is fixed to the back fixing surface 24 of the protruding portion 23 provided on the pair of support legs 2, 2, similarly to the above, each member can be divided into small packages, for example, with a weight of 20 kg or less per package, making it easy for workers to transport to the construction site. Also, since the back 4 is fixed to the pair of support legs 2, 2 in a unitized state, similar to the seat 3, the work of fixing the back 4 to the pair of support legs 2, 2 at the construction site of the bench 1 can be greatly simplified.

[0063] In addition, since the back connecting member 6 is fixed to the pair of support legs 2, 2 by inserting a fixing bolt 67 between the fixing bolt hole 62 provided in the back connecting member 6 and a back fixing hole (not shown) provided in the pair of support legs 2, 2 and screwing it with a fixing nut 68, the work of fixing the back 4 to the pair of support legs 2, 2 at the construction site of the bench 1 can be greatly simplified, as described above. Also, it becomes possible to fix the back 4 to the pair of support legs 2, 2 with good positional accuracy.

[0064] Although detailed illustrations are omitted in Figures 2 and 3, etc., in this embodiment, it is preferable that the head of the fixing bolt 57 that fixes the seat connecting member 5 is polygonal in plan view, and that the head of this fixing bolt 57 engages within a slit between multiple rod-shaped bodies 31 in the seat 3 to prevent it from rotating. This makes it possible to prevent the fixing bolt 57 from spinning freely when the seat 3 is fixed to the pair of support legs 2, 2, thereby achieving the effect of significantly improving work efficiency at the construction site.

[0065] Similarly, in this embodiment, the head of the fixing bolt 67 that fixes the back connecting member 6 is also polygonal in plan view, and it is preferable that the head of this fixing bolt 67 engages within a slit between multiple rod-shaped bodies 41 in the back 4 to prevent it from rotating. As a result, as in the case of the seat 3, when the back 4 is fixed to the pair of support legs 2, 2, the fixing bolt 67 can be prevented from spinning freely, resulting in a significant improvement in work efficiency at the construction site.

[0066] Furthermore, in this embodiment, as shown in Figures 2 and 3, it is preferable to construct the fixing nut 58 that screws into the fixing bolt 57, and the fixing nut 68 that screws into the fixing bolt 67 from a cap nuts, from the viewpoint of further improving workability at the construction site. In addition, although detailed illustrations are omitted in this embodiment, for example, using an In-Pull Nut (registered trademark) as the above-mentioned fixing nut 68 is even more preferable from the viewpoint of making it even easier to screw the fixing bolt 67 and the fixing nut 68 together, thereby significantly improving workability.

[0067] In addition, in this embodiment, as shown in the example in Figures 1 and 2 (see also Figure 4), a plurality of unitized seat portions 3 (3A, 3B) may be provided, and the plurality of seat portions 3A, 3B may be aligned in parallel and fixed to the seat portion fixing surfaces 22 of a pair of support legs 2, 2. This allows each component to be divided into smaller parts with small weights, even when assembling a bench with a large seat depth, making it easier for workers to transport to the construction site. Also, even if the number of seats 3 (3A, 3B) to be installed at the construction site increases, it is possible to simplify the work of fixing the seats 3A, 3B to the pair of support legs 2, 2 as much as possible.

[0068] Similarly, in this embodiment, although detailed illustration is omitted, the chair may have multiple unitized backs 4, and the multiple backs 4 may be aligned in parallel and fixed to the back fixing surfaces 24 of a pair of support legs 2, 2. As a result, similar to the case of the seat 3, even when assembling a bench with a large height dimension on the back side, each component can be divided into small parts with small weights, making it easy for workers to transport to the construction site. Also, even if the number of backs 4 to be installed at the construction site increases, it is possible to simplify the work of fixing the backs 4 to the pair of support legs 2, 2 as much as possible.

[0069] In addition, in this embodiment, a band plate may be further provided between the pair of support legs 2, 2, arranged parallel to the pair of support legs 2, 2, and attached to the lower surface 31b side of the multiple rod-shaped bodies 31 that constitute the unitized seat portion 3. More specifically, as in the example shown in Figures 6 and 7, a band plate 8 may be provided between a pair of support legs 2, 2, arranged parallel to the pair of support legs 2, 2, and attached so as to extend over both the underside 31b side of the multiple rod-shaped bodies 31 that constitute the unitized seat portion 3 and the other side 41b side of the multiple rod-shaped bodies 41 that constitute the back portion 4. By providing such a band plate, it is possible to ensure strength in the entire width direction even for a bench having a very wide width of, for example, 1200 mm or more. In addition, when such a band plate 8 is grounded, although not shown in the figures, a configuration may be adopted in which a support leg 2 is further disposed at a position corresponding to this band plate 8 and the band plate 8 is fixed to the support leg 2.

[0070] <How to assemble the bench> A method for assembling the bench 1 of this embodiment will be described in detail below with reference to FIGS. In the following description, a more detailed configuration of the bench 1 will be described with reference to FIGS. 1 to 5 as appropriate, and detailed description thereof may be omitted.

[0071] The method of assembling the bench of this embodiment is a method of assembling the bench 1 (1A) of this embodiment described above, i.e., the bench 1 (1A) comprising a pair of support legs 2 arranged at a distance from each other, the seat 3 being aligned in parallel, the lower side of which serves as a ground contact portion 21 fixed to the installation surface, and a frame-shaped member having a seat fixing surface 22 above the ground contact portion 21 to which the seat 3 is fixed, and the seat 3 having a plurality of rod-shaped bodies 31 arranged in parallel in a direction perpendicular to the pair of support legs 2, 2, and the plurality of rod-shaped bodies 31 unitized by a seat connecting member 5. Specifically, the method of assembling the bench in this embodiment includes at least a grounding process (1) of fixing the grounding portion 21 to the installation surface S while arranging the pair of support legs 2, 2 in parallel, a seat installation process (2) of installing the unitized seat 3 on the seat fixing surface 22 of the pair of support legs 2, 2 so that the multiple rod-shaped bodies 31 are perpendicular to the pair of support legs 2, 2, and a seat fixing process (3) of fixing the unitized seat 3 to the pair of support legs 2, 2 by fixing the seat connecting member 5 to the seat fixing surface 22.

[0072] In addition to the above steps (1) to (3), this embodiment further includes a back installation step (4) of installing the back 4, which is unitized by a back connecting member 6 with multiple rod-shaped bodies 41 aligned in parallel at a distance from each other, on a back fixing surface 24 provided on a pair of support legs 2,2 so that the multiple rod-shaped bodies 41 are perpendicular to the pair of support legs 2,2, and a back fixing step (5) of fixing the back connecting member 6 to the back fixing surface 24 to fix the unitized back 4 to the pair of support legs 2,2.

[0073] [Grounding process (1)] In the grounding step (1), as shown in FIG. 6, the pair of support legs 2, 2 are arranged in parallel, and the grounding portion 21 is fixed to the installation surface S (see FIG. 1). At this time, for example, by embedding the anchor bolts 7 in the installation surface S made of concrete or the like, the ground contact portion 21 can be fixed to the installation surface S with high strength.

[0074] [Seat installation process (2)] Next, in the seat installation process (2), as shown in Figure 7, the unitized seat 3 is installed on the seat fixing surface 22 of the pair of support legs 2, 2 so that the multiple rod-shaped bodies 31 are perpendicular to the pair of support legs 2, 2. At this time, first, the seat 3 is placed on the seat fixing surface 22 so that the positions of the fixing bolt holes 52 provided in the seat connecting member 5 that connects the multiple rod-shaped bodies 31 and the fixing bolts 57 inserted into the fixing bolt holes 52 roughly correspond to the positions of the seat fixing holes (not shown) provided in the seat fixing surfaces 22 of the pair of support legs 2, 2. That is, the seat 3 is placed on the seat fixing surface 22 with the threaded portion of the fixing bolt 57 inserted into the seat fixing hole provided as a loose hole in the seat fixing surface 22.

[0075] Next, the packaging material (not shown) is removed from the unitized seat portion 3, and the support material (not shown) that supports the fixing bolts 57 inserted in the slits between the multiple rod-shaped bodies 31 is removed. Here, in this embodiment, the bolt avoidance hole 22a provided in the seat fixing surface 22 is formed larger than the head of the co-tightening bolt 55, making it easier to align the seat 3 when installing it on the seat fixing surface 22.

[0076] [Seat fixing process (3)] Next, in the seat fixing step (3), the seat connecting member 5 is fixed to the seat fixing surface 22, as described above, thereby fixing the unitized seat 3 to the pair of support legs 2, 2. In this case, by placing a fixing nut 58 on the surface of the support leg 2 opposite the seat fixing surface 22, the seat 3 can be fixed to the pair of support legs 2, 2 by screwing the fixing bolt 57 into the fixing nut 58.

[0077] Here, in this embodiment, the head of the fixing bolt 57 is polygonal in plan view, and the head of this fixing bolt 57 engages within a slit between multiple rod-shaped bodies 31 in the seat 3 to prevent it from rotating. This prevents the fixing bolt 57 from spinning freely, greatly improving work efficiency when fixing the seat 3 to a pair of support legs 2, 2.

[0078] In addition, in this embodiment, for example, when the unitized seat 3 is packed and shipped, the fixing bolt 57 is inserted into the fixing bolt hole 52 located outermost in the longitudinal direction of the rod-shaped body 31, i.e., in the lateral direction of the bench 1, and the fixing bolt 57 is screwed into the fixing nut 58 at this position to fix the seat 3 to the pair of support legs 2, 2, thereby obtaining the effect of stabilizing the mounting state (see also Figure 4).

[0079] [Back installation process (4)] Next, in the assembly method of the bench 1 of this embodiment, as described above, in the back installation process (4), the unitized back 4 is installed on the back fixing surface 24 of the pair of support legs 2, 2 so that the multiple rod-shaped bodies 41 are perpendicular to the pair of support legs 2, 2. At this time, first, the fixing bolt 67 inserted into the fixing bolt hole 62 provided in the back connecting member 6 that connects the multiple rod-shaped bodies 41 is inserted into the back fixing hole (not shown) provided in the back fixing surface 24 of the pair of support legs 2, 2, thereby temporarily fixing the back 4 onto the back fixing surface 24.

[0080] Next, the packaging material (not shown) is removed from the unitized back portion 4, and the support material (not shown) that supports the fixing bolts 67 inserted in the slits between the multiple rod-shaped bodies 41 is removed. Here, in this embodiment, as in the case of the seat portion 3, the bolt avoidance hole 24a provided in the back fixing surface 24 is formed larger than the head of the co-tightening bolt 65, making it easier to align the back portion 4 when installing it on the back fixing surface 24.

[0081] [Back fixation process (5)] Next, in the back fixing step (5), the back connecting member 6 is fixed to the back fixing surface 24 as described above, thereby fixing the unitized back 4 to the pair of support legs 2, 2. In this case, by placing a fixing nut 68 on the surface of the support leg 2 opposite the back fixing surface 24, the back 4 can be fixed to the pair of support legs 2, 2 by screwing the fixing bolt 67 into the fixing nut 68.

[0082] Here, in this embodiment, as in the case of the seat portion 3, the head of the fixing bolt 67 engages within a slit between multiple rod-shaped bodies 41 in the back portion 4 to prevent it from rotating, thereby preventing the fixing bolt 67 from spinning freely, greatly improving the work efficiency when fixing the back portion 4 to a pair of support legs 2, 2.

[0083] Furthermore, as in the case of the seat portion 3, for example, when the unitized back portion 4 is packed and shipped, a fixing bolt 67 is inserted into the fixing bolt hole 62 located at the outermost position in the longitudinal direction of the rod-shaped body 41, and the fixing bolt 67 is screwed into the fixing nut 68 at this position to fix the back portion 4 to the pair of support legs 2, 2, thereby obtaining the effect of stabilizing the mounting state (see also Figure 5).

[0084] By following the above procedure, the bench 1 of this embodiment as shown in FIG. 1 can be assembled.

[0085] According to the method of assembling the bench 1 of this embodiment, as described above, it includes the grounding process (1), the seat installation process (2), and the seat fixing process (3), and further includes the back installation process (4) and the back fixing process (5). As a result, as described above, it is possible to install each component in small portions with low weight, which not only reduces the burden on workers at the construction site, but also greatly improves the work efficiency when fixing the seat 3 and the back 4 to the pair of support legs 2, 2.

[0086] <Action and effect> As described above, the bench 1 of this embodiment has a seat 3 in which a plurality of rod-shaped bodies 31 are aligned in parallel and unitized by a seat connecting member 5, and the seat connecting member 5 is fixed to the seat fixing surface 22 of the pair of support legs 2, 2. Furthermore, this embodiment has a back 4 in which a plurality of rod-shaped bodies 41 are aligned in parallel and unitized by a back connecting member 6, and the back connecting member 6 is fixed to the back fixing surface 24 of the pair of support legs 2, 2. According to the bench 1 of this embodiment, by adopting the above configuration, it is possible to divide each component into small packages, each package weighing, for example, 20 kg or less, which makes it easier for workers to transport to the construction site and also reduces delivery costs. In addition, the seat 3 and back 4 are fixed to the pair of support legs 2, 2 in a unitized state, which greatly simplifies the work of fixing the seat and back 4 to the pair of support legs 2, 2 at the construction site. Furthermore, since each component can be packed as a unit, work such as fine alignment of each component during construction can be omitted, resulting in better workability. Therefore, by dividing each component into smaller pieces and making them lighter, the transportation load can be reduced, and assembly work of each component at the construction site can be carried out efficiently.

[0087] The method for assembling the bench 1 of this embodiment includes a seat installation step (2) of installing the unitized seat 3 on the seat fixing surface 22 of the pair of support legs 2, 2, and a seat fixing step (3) of fixing the unitized seat 3 to the pair of support legs 2, 2 by fixing the seat connecting member 5 to the seat fixing surface 22. This embodiment also employs a method including a back installation step (4) of installing the unitized back 4 on the back fixing surface 24 of the pair of support legs 2, 2 so that the multiple rod-shaped bodies 41 are perpendicular to the pair of support legs 2, 2, and a back fixing step (5) of fixing the unitized back 4 to the pair of support legs 2, 2 by fixing the back connecting member 6 to the back fixing surface 24. According to the assembly method of the bench 1 of this embodiment, as described above, each component can be constructed in small pieces with low weight, which reduces the burden on workers at the construction site and significantly improves the work efficiency when fixing the seat 3 and back 4 to the pair of support legs 2, 2. Furthermore, because each component can be packed as a unit, work such as fine alignment of each component during construction can be omitted, resulting in better workability. Therefore, as described above, it is possible to efficiently assemble each component at the construction site while reducing the transportation load.

[0088] <Other forms> The configurations and combinations thereof in the above-described embodiments are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the above-described embodiments, but is limited only by the claims.

[0089] The bench of this embodiment is not limited to a configuration having a back portion 4 as described in the above embodiment, and it is also possible to have a bench 1A having only a unitized seat portion 3 attached to a pair of support legs 2A, 2A, as shown in the example of FIG. 8. A bench 1A of this type can be used in applications where people need to sit for a relatively short period of time, such as on a train station platform or at a bus stop.

[0090] The bench 1A having the above-mentioned configuration also includes a seat 3 in which a plurality of rod-shaped bodies 31 are aligned in parallel and unitized by a seat connecting member, as in the bench 1 shown in the above-mentioned embodiment, and the seat connecting member is fixed to the seat fixing surface of the pair of support legs 2, 2. Therefore, each component can be divided into small packages, for example, with a weight of 20 kg or less per package, which makes it easy for workers to transport to the construction site. In addition, since the seat 3 is fixed to the pair of support legs 2, 2 in a unitized state, the work of fixing the seat 3 to the pair of support legs 2, 2 at the bench construction site can be greatly simplified. Furthermore, since each component can be packed as a unit, the need for detailed alignment work between each component during construction can be omitted, resulting in better construction efficiency. Therefore, by dividing each component into smaller pieces and making them lighter, the transportation load can be reduced, and assembly work of each component at the construction site can be carried out efficiently. [Industrial Applicability]

[0091] The bench of the present invention can be efficiently assembled at the construction site while reducing the transportation load by dividing each component into small parts and making them lighter. Therefore, the present invention is very suitable for constructing benches for passersby and visitors to rest, eat, etc. in waiting rooms at train stations and airports, public spaces such as department stores and mass retailers, and entertainment facilities such as parks and theme parks. [Explanation of symbols]

[0092] 1,1A…Bench 2, 2A…Support legs (pair of support legs) 21...Grounding part 22…Seat fixing surface 22a...Bolt hole 23…Protruding part 24…Back fixing surface 24a…Bolt hole 3...Seat (unitized seat) 31... Rod-shaped body (multiple rod-shaped bodies) 31a…Top surface 31b…Bottom surface 31c…Rib 4...Back (unitized back) 41... Rod-shaped body (multiple rod-shaped bodies) 41a…One side 41b...other side 41c…Rib 5...Seat connecting member 51...Co-tightening bolt hole 52...Fixing bolt hole 55...Co-tightening bolt 56...Co-tightening nut 57…Fixing bolt (bolt) 58…Fixing nut (nut) 6…Back connecting member 61...Co-tightening bolt hole 62...Fixing bolt hole 65...Co-tightening bolt 66...Co-tightening nut 67…Fixing bolt (bolt) 68…Fixing nut (nut) 7...Anchor bolt 8…Belt S…Installation surface

Claims

1. A seat portion in which a plurality of rod-shaped bodies are arranged in parallel and spaced apart from each other; A method for assembling a bench comprising a pair of support legs spaced apart from each other, the pair of support legs being made of a frame-shaped member having a seat fixing surface above the seat fixing surface, the lower side of the support legs being a grounding portion fixed to an installation surface, the seat fixing surface being fixed to the seat fixing surface above the grounding portion, The seat portion is arranged so that the plurality of rod-shaped bodies are aligned in parallel in a direction perpendicular to the pair of support legs, and the plurality of rod-shaped bodies are unitized by a seat portion connecting member, The seat portion connecting member is provided with a bolt hole at a position corresponding to the slit provided by separating the plurality of rod-shaped bodies, The seat fixing surfaces of the pair of support legs are provided with seat fixing holes at positions corresponding to the bolt holes provided in the seat connecting member, A bolt is inserted between the bolt hole provided in the seat connecting member and the seat fixing hole provided in the pair of support legs, and the bolt and nut are screwed together to fix the seat connecting member to the seat fixing surface of the pair of support legs, thereby fixing the seat to the pair of support legs in a unitized state, A method for assembling a bench, characterized in that the head of the bolt is formed in a polygonal shape when viewed in a plane, and the head of the bolt engages in the slit between the multiple rod-shaped bodies in the seat portion to prevent it from rotating.

2. The method for assembling a bench as described in claim 1, further comprising providing a plurality of unitized seats, the plurality of seats being aligned in parallel and fixed to the seat fixing surfaces of the pair of support legs.

3. A method for assembling a bench as described in claim 1 or claim 2, further comprising a band plate disposed between the pair of support legs, parallel to the pair of support legs, and attached to the bottom side of the unitized seat portion.

4. Further, the device includes a back portion in which the plurality of rod-shaped bodies are aligned in parallel and spaced apart from each other and unitized by a back portion connecting member, The pair of support legs are further provided so as to protrude upward from the seat fixing surface, and have an L-shaped cross section including a protruding portion having a back fixing surface to which the back is fixed, A method for assembling a bench as described in any one of claims 1 to 3, characterized in that the back connecting member is fixed to the back fixing surfaces of the pair of support legs, so that the back is fixed to the pair of support legs in a unitized state in which the multiple rod-shaped bodies are aligned in parallel in a direction perpendicular to the pair of support legs.

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