JP2023012064A - Bench and assembling method of bench - Google Patents

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

The present invention relates to benches and methods of assembling benches.

Conventionally, for example, in waiting rooms such as railway stations and airports, public spaces such as department stores and mass retailers, entertainment facilities such as parks and theme parks, etc., benches are installed for passers-by and visitors to rest and eat. ing.
As such a bench, for example, there is a structure in which a seat portion having a substantially planar seat surface is provided by arranging a plurality of rod-shaped bodies or the like on a plurality of supporting legs. Traditionally used.

Here, conventional benches are made by bringing a single piece of a seat made up of multiple supporting legs and multiple rod-shaped bodies to the construction site, and either burying the lower parts of the supporting legs in the installation surface or fixing them with anchor bolts. Installed.
However, since the total weight of the members constituting the bench as described above reaches as much as 70 kg, there is a problem that it is not easy for workers to transport, and transportation costs increase. In addition, when the bench is to be transported to the construction site as a single unit, prior foundation construction is required, which causes the problem of increased labor and costs during construction.

Among the above problems, in order to solve the problem of construction in particular, for example, at least four piles spaced in the front, back, left and right are buried in the installation surface, and the upper parts of at least two piles arranged in the front and back A leg extending in the front-rear direction is bridged over, and a screw is screwed into the upper part of the pile that penetrates the lower part of the leg. A bench having a configuration in which a seat portion extending in the left-right direction is provided across and supported has been proposed (see Patent Document 1, for example).

According to the bench described in Cited Document 1, by adopting the above configuration, the work for forming the foundation is only the work of embedding the piles, so it is possible to carry out work efficiently at the construction site.

JP 2015-033433 A

However, since the bench described in Patent Document 1 is made by integrating members such as the legs and the seat, it becomes heavy and bulky as in the conventional case, and the burden on the worker during transportation is increased. As the size increases, there is a problem that transportation costs increase.

The present invention has been made in view of the above problems, and a bench that can efficiently assemble each member at the construction site while reducing the transportation load by dividing each member into smaller parts and reducing their weight. and a bench assembly method.

In order to solve the above problems, the bench of the present invention has a seat portion in which a plurality of rod-shaped bodies are spaced apart and arranged in parallel, and a ground portion whose lower side is fixed to the installation surface, and above the ground portion and a pair of support legs which are formed of a frame-shaped member having a seat portion fixing surface to which the seat portion is fixed, and which are spaced apart from each other. The plurality of rod-shaped bodies are arranged so as to be 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, and the seat portion connecting member connects the pair of support legs. The seat is fixed to the pair of support legs in a unitized state by being fixed to the seat fixing surface of the leg.

According to the present invention, as described above, the seat is provided with a plurality of rod-shaped bodies arranged in parallel and unitized by the seat connecting member, and the seat connecting member is the seat of the pair of support legs. Since it is configured to be fixed to a fixed surface, each member can be subdivided with a weight of, for example, 20 kg or less per package, facilitating transportation to a construction site by a worker. In addition, since the seat portion is unitized and fixed to the pair of support legs, the work of fixing the seat portion to the pair of support legs with bolts and nuts can be greatly simplified at the construction site of the bench. Furthermore, since each member can be packed as a unit, it is possible to omit detailed alignment work of each member during construction, and thus, more excellent workability can be obtained.

In the bench of the present invention, in the above configuration, the seat connecting member is provided with a bolt hole at a position corresponding to a slit secured by separating the plurality of rod-shaped bodies, and the pair of support legs is provided. The seat portion fixing surface is provided with a seat portion fixing hole at a position corresponding to the bolt hole provided in the seat portion connecting member, and the bolt hole provided in the seat portion connecting member and the pair of The seat connecting member is fixed to the pair of support legs by inserting a bolt between the seat fixing holes provided in the support legs and screwing the bolt and the nut together. can be adopted.

According to the present invention, as described above, the 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. By doing so, since the seat portion connecting member is fixed to the pair of support legs, the work of fixing the seat portion to the pair of support legs with bolts and nuts can be greatly simplified at the construction site of the bench as described above. . Also, the seat can be fixed to the pair of support legs with high positional accuracy.

In the above configuration, the bench of the present invention further includes a plurality of unitized seat portions, and the seat portion fixing surfaces of the pair of support legs are arranged in a state in which the plurality of seat portions are aligned in parallel. A fixed configuration may be adopted.

According to the present invention, as described above, by providing a plurality of the unitized seat portions, for example, even when assembling a bench with a large depth dimension of the seat surface, each member can be made small as described above. It becomes possible to subdivide by weight, and it becomes easy for a worker to carry it to the construction site. In addition, even though the number of seat units to be installed at the construction site increases, the work of fixing the seat units to the pair of support legs with bolts and nuts can be simplified as much as possible.

In the bench of the present invention, in the above configuration, a band plate is arranged between the pair of support legs and parallel to the pair of support legs, and is attached to the bottom surface of the unitized seat portion. You may employ the composition provided with.

According to the present invention, as described above, by providing the strip plate attached to the bottom side of the seat, even a bench having a very wide width of 1200 mm or more, for example, can have strength in the entire width direction. can be secured.

In the above configuration, the bench of the present invention further comprises a back unitized by a back connecting member in a state in which a plurality of bar-shaped bodies are spaced apart and aligned in parallel, and the pair of support legs further includes the above It has an L-shaped cross-section provided with a protruding portion having a back fixing surface to which the back is fixed, and which is provided so as to protrude upward from the seat fixing surface, and the back connecting member is the pair of support legs. By fixing the back portion to the back portion fixing surface of the back portion, the back portion is unitized by aligning the plurality of rod-shaped bodies in parallel in a direction orthogonal to the pair of support legs. A configuration fixed to a support leg can be employed.

According to the present invention, as described above, the protruding portion is provided with a plurality of rod-shaped bodies arranged in parallel and unitized by the back connecting member, and the back connecting member is provided on the pair of supporting legs. Since it is fixed to the back fixing surface of the above, each member can be divided into small parts with a weight of 20 kg or less per package, for example, and can be easily transported to the construction site by the worker. Also, like the seat, the back is fixed to a pair of support legs in a unitized state. Can be simplified. Furthermore, since each member can be packed as a unit, it is possible to omit the fine positioning work of each member at the time of construction, as in the case described above, so that more excellent workability can be obtained.

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.

According to the present invention, since the plurality of rod-shaped bodies are made of hollow members, the weight of the unitized seat portion and back portion is reduced. It also reduces the load in attaching to the pair of support legs.

The method of assembling a bench according to the present invention comprises a seat portion in which a plurality of rod-shaped bodies are arranged in parallel with each other spaced apart, and a ground portion whose lower side is fixed to an installation surface, and the seat portion is above the ground portion. a frame-shaped member having a seat portion fixing surface to be fixed, and a pair of support legs arranged spaced apart from each other; A method of assembling a bench arranged so as to be aligned in parallel in a direction orthogonal to the seat portion and having the plurality of rod-shaped bodies unitized by a seat portion connecting member, comprising at least the pair of support legs a grounding step of fixing the grounding portion to the installation surface while arranging the grounding portion in parallel; The unitized seat is fixed to the pair of support legs by a seat installation step of installing the support leg on the seat fixing surface, and fixing the seat connecting member to the seat fixing surface. and a seat fixing step.

According to the present invention, the seat mounting step of mounting the unitized seat on the seat fixing surfaces of the pair of support legs, and fixing the seat connecting member to the seat fixing surfaces are performed. , and a seat portion fixing step of fixing a unitized seat portion to a pair of support legs. The load on the workers at the construction site can be reduced, and the work efficiency when fixing the seat to the pair of support legs with bolts and nuts is greatly improved.

The method for assembling a bench according to the present invention further comprises the above-mentioned method, wherein a plurality of rod-shaped bodies are arranged in parallel and spaced apart from each other, and the back portion unitized by the back connecting member is further divided into: The back portion installation step of installing the back portion fixing surface provided on the pair of support legs so as to be perpendicular to the pair of support legs, and fixing the back portion connecting member to the back portion fixing surface to form the unit. and a back portion fixing step of fixing the back portion to the pair of support legs.

According to the present invention, as described above, furthermore, the unitized back portion is installed on the back portion fixing surface of the pair of support legs, and the back portion connecting member is fixed to the back portion fixing surface. By adopting a configuration including a back portion fixing step of fixing the back portion to a pair of support legs, it is possible to divide each member into small weights and perform construction in the same manner as described above, and work at the construction site. In addition to reducing the burden on the user, the work efficiency when fixing the back to the pair of support legs with bolts and nuts is greatly improved.

According to the bench according to the present invention, as described above, the seat is provided with a plurality of rod-shaped bodies arranged in parallel and unitized by the seat connecting member, and the seat connecting member is a pair of support legs. It adopts a configuration that is fixed to the seat fixing surface.
As a result, each member can be subdivided with a weight of, for example, 20 kg or less per package, which facilitates transportation to the construction site by workers and reduces delivery costs. Moreover, since the seat is fixed to the pair of support legs in a unitized state, it is possible to greatly simplify the work of fixing the seat to the pair of support legs with bolts and nuts at the construction site. Furthermore, since each member can be packed as a unit, it is possible to omit detailed alignment work of each member during construction, and thus, more excellent workability can be obtained.
Therefore, it is possible to efficiently assemble each member at the construction site while reducing the transportation load by subdividing each member to reduce the weight.

Further, according to the bench assembling method of the present invention, there are provided a seat installation step of installing the unitized seat on the seat fixing surface of the pair of support legs, and fixing the seat connecting member to the seat fixing surface. and a seat portion fixing step of fixing the unitized seat portion to the pair of support legs.
As a result, it is possible to divide each member into small parts and carry out the work in the same manner as above, reducing the burden on workers at the construction site, and fixing the seat to a pair of support legs with bolts and nuts. Greatly improves work efficiency. Furthermore, since each member can be packed and transported as a unit, it is possible to omit detailed positioning work of each member during construction, and thus, more excellent workability can be obtained.
Therefore, it is possible to efficiently perform the work of assembling each member at the construction site while reducing the transportation load.

1 is a diagram schematically explaining a bench that is an embodiment of the present invention, and is a perspective view showing a state in which a unitized seat portion and back portion are attached to a pair of support legs. FIG. FIG. 2 is a diagram schematically explaining a bench that is one embodiment of the present invention, and is a cross-sectional view of the bench shown in FIG. 1 taken along the line AA. FIG. 3 is a diagram schematically illustrating a bench that is an embodiment of the present invention, and is a schematic cross-sectional view showing a state in which the unitized seat portion and back portion are omitted in the cross-sectional view shown in FIG. 2 . FIG. 2B is a diagram schematically illustrating the bench that is one embodiment of the present invention, and is a plan view showing a state in which the unitized seat portion is viewed from the back side. FIG. 2B is a diagram schematically illustrating the bench that is one embodiment of the present invention, and is a plan view showing a state in which the unitized back is viewed from the back side. FIG. FIG. 10 is a diagram schematically explaining a method of assembling the bench that is one embodiment of the present invention, and is for explaining procedures of a seat installation step and a seat fixing step for attaching a unitized seat to a pair of support legs; is a perspective view of the. FIG. 4B is a diagram schematically illustrating a method of assembling the bench that is one embodiment of the present invention, and is a perspective view illustrating procedures of a back portion installation step and a back portion fixing step for attaching a unitized back portion to a pair of support legs. is. FIG. 10 is a diagram schematically explaining another example of the bench that is one 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.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a bench and a method for assembling a bench according to the present invention will be described below with reference to FIGS. 1 to 8 as appropriate. In addition, in the drawings used in the following explanation, in order to make the features easier to understand, the characteristic parts may be enlarged for convenience, and the dimensional ratios of each component may differ from the actual ones. There is

<Composition of the bench>
The configuration of the bench 1 of this embodiment will be described in detail below.
FIG. 1 is a diagram for explaining a bench 1 of this embodiment, and is a perspective view showing a state in which a unitized seat portion 3 and back portion 4 are attached to a pair of support legs 2, 2, and FIG. , AA sectional view of the bench 1 shown in FIG. 1, and FIG. 3 is a schematic sectional view showing a state in which the unitized seat portion 3 and the back portion 4 are omitted in the sectional view shown in FIG. be.
4 is a plan view showing an example of the unitized seat portion 3 shown in FIG. 1, viewed from the back side, and FIG. It is a top view which shows the state seen.
6 and 7 are diagrams for explaining a method for assembling the bench 1 of this embodiment, and FIG. 7 is a perspective view for explaining the procedure of the back fixing step and the back fixing step of attaching the unitized back 4 to the pair of supporting legs 2, 2. FIG. .

As shown in FIGS. 1 and 2, the bench 1 of this embodiment includes a seat portion 3 in which a plurality of rod-shaped bodies 31 are spaced apart and arranged in parallel, and a grounding portion fixed to the installation surface S on the lower side. A pair of supporting legs 2 are provided which are formed of a frame-like member having a seat portion fixing surface 22 on which the seat portion 3 is fixed above the ground portion 21 and which are spaced apart from each other. Further, the bench 1 of the present embodiment illustrated in FIGS. 1 and 2 has a back portion 4 in which a plurality of bar-shaped bodies 41 are arranged in parallel with each other spaced apart.

More specifically, the seat portion 3 is arranged such that a plurality of rod-shaped bodies 31 are aligned in parallel in a direction orthogonal to the pair of support legs 2, 2 made of frame-shaped members, and a plurality of rod-shaped bodies 31 are arranged in parallel. are aligned in parallel and unitized by the seat portion connecting member 5 (see also FIG. 4). By fixing the seat portion connecting member 5 to the seat portion fixing surface 22 of the pair of support legs 2, 2, the seat portion 3 is fixed to the pair of support legs 2, 2 in a unitized state. .

Further, the pair of support legs 2, 2 in the illustrated example are provided to protrude upward from the seat portion fixing surface 22, and have a projecting portion 23 having a back portion fixing surface 24 to which the back portion 4 is fixed. . The back portion 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 unitized by the back portion connecting member 6. (see also Figure 5). By fixing the back connecting member 6 to the back fixing surfaces 24 of the pair of support legs 2, 2, the unitized back 4 is fixed to the pair of support legs 2, 2. - 特許庁

In the following description, the side of the bench 1 on which the user sits is referred to as the front side, and the side opposite to the side on which the user sits, that is, the projecting portion 23 shown in FIG. 1 is provided. side may be referred to as the back side.

The support leg 2 functions as a base of the bench 1 of the present embodiment by attaching the seat portion 3 and the back portion 4 described above. It is fixed to a different installation surface S.
As described above, the support leg 2 has the seat portion fixing surface 22 above the ground portion 21 to which the seat portion 3 is fixed. Further, the support leg 2 in the illustrated example is provided with a projecting portion 23 that protrudes upward from the seat portion fixing surface 22 and has a back portion fixing surface 24 to which the back portion 4 is fixed. are configured in the form of

The material of the support legs 2 is not particularly limited, but for example, a plate-shaped metal material having strength enough to withstand use as a bench, such as steel, is used. configured as
Also, in the illustrated example, a pair of supporting legs 2, 2 are spaced apart from each other and configured to support the seat portion 3 and the back portion 4 in the vicinity of their respective ends.

The seat portion fixing surface 22 is arranged substantially parallel to the ground portion 21 that is grounded on the installation surface S, that is, substantially horizontal.
Further, as shown in FIG. 2 (see also FIG. 3), the seat portion fixing surface 22 is provided with co-tightening bolts 55 used to fix each of the plurality of rod-shaped bodies 31 to the seat portion connecting member 5. A bolt avoiding hole 22a is provided to avoid interference. Further, although not shown in FIGS. 2 and 3 , the seat fixing surface 22 has a seat fixing hole (bolt hole) at a position corresponding to the fixing bolt hole (bolt hole) 52 provided in the seat connecting member 5 . is provided (see also FIG. 4). 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 and the fixing nut (nut ) 58 , the seat portion 3 , which is unitized including the seat portion connecting member 5 , is fixed to the seat portion fixing surface 22 .
In the seat portion fixing surface 22, a plurality of the bolt avoiding holes 22a and the seat portion fixing holes are provided so as to correspond to the number of the corresponding co-tightening bolts 55 and fixing bolts 57, respectively.
Also, the seat portion fixing hole is a loose hole with respect to the threaded portion of the fixing bolt 57 .

As described above, the protruding portion 23 is provided so as to rise from the back side of the seat fixing surface 22 (the back side of the bench 1). , the surface facing upward is the back fixing surface 24 . In addition, the back fixing surface 24 in the example shown in FIG. 2 is a standing surface provided so as to lean slightly toward the back side of the bench 1 .

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

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

Further, although not shown in FIGS. 1 and 2, the grounding portion 21 of the support leg 2 is provided with a through hole for inserting the above-described anchor bolt 7 and fixing the support leg 2 to the installation surface S. are formed at a total of two locations.

As described above, the seat portion 3 is made up of a plurality of rod-shaped bodies 31 spaced apart and arranged in parallel. They are arranged so as to be aligned in parallel in orthogonal directions. The upper surface 31a side of the plurality of rods 31 serves as a seating surface for the user of the bench 1, and the lower surface 31b side is attached to the seat connecting member 5. As shown in FIG.

The seat portion 3 provided in the bench of this embodiment is unitized by attaching a plurality of rod-shaped bodies 31 arranged in parallel to the seat portion connecting member 5 . In the example shown in FIG. 2, a seat portion 3A (3) in which three rod-shaped bodies 31 are connected by a seat portion connecting member 5A is arranged at a position near the front of the bench 1, and a position near the back of the bench 1. A seat portion 3B(3) in which four rod-shaped bodies 31 are unitized by a seat portion connecting member 5B is arranged (see also FIG. 4).

The material of the rod-shaped body 31 is not particularly limited, and for example, a material using a plastic material, a metal material, or the like can be appropriately adopted.
On the other hand, the rod-shaped body 31 is preferably made of a hollow extruded product or the like using a plastic material from the viewpoint of cost, weight reduction, and the like. Here, if the rod-shaped body 31 is made of a hollow extruded product made of a plastic material, as shown in the cross-sectional view of FIG. This is more preferable from the viewpoint of ensuring strength as a resin molded product.
Since the plurality of rod-shaped bodies 31 are made of hollow members as described above, the weight of the unitized seat portion 3 is reduced. The load in the work of attaching to the support legs 2, 2 is also reduced.

When a plastic material is used for the rod-shaped body 31, its type is not particularly limited, and it can be adopted while taking strength, weather resistance, etc. into consideration. For example, polyethylene, polypropylene, polyester, ABS resin, AAS resin, polycarbonate, etc. It is possible to select and use one of them, or select and use a plurality of them in combination.
Further, when a hollow extruded product using a plastic material is used for the rod-shaped body 31, for example, a long extruded product made of the above material is appropriately cut into a predetermined length. can use things.

As described above, the seat connecting member 5 connects a plurality of rod-shaped bodies 31 to form a unitized seat 3. In the example of the seat 3B(3) shown in FIG. By screwing the co-tightening bolt 55 and the co-tightening nut 56 together, the four rod-shaped bodies 31 are connected and united by the seat portion connecting member 5 .

The material of the seat connecting member 5 is also not particularly limited, but similar to the support leg 2, a plate-like metal material having strength enough to withstand use as a bench, such as steel, is used.

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 tightening bolt hole 51 through which a common tightening bolt 55 for fixing each of the plurality of rods 31 is inserted. Further, the seat connecting member 5 is 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 portion connecting member 5 of the illustrated example, the co-tightening bolt holes 51 are provided at four locations corresponding to the number of rod-shaped bodies 31 to be attached. In addition, in the illustrated example of the seat portion connecting member 5, the fixing bolt holes 52 are provided at positions corresponding to the three slits secured by the separation of the four rod-shaped bodies 31, and are arranged in a total of five locations in three rows. is provided. In addition, the fixing bolt holes 52 are located at positions corresponding to the two slits arranged on the outer side of the three slits secured by the four rod-shaped bodies 31 being spaced apart from each other. They are provided at two locations (four locations in total) along the longitudinal direction, and are provided at one location at a position corresponding to the slit arranged in the center.
A fixing bolt 57 is inserted between a fixing bolt hole 52 provided in the seat connecting member 5 and a seat fixing hole 22a provided in the support leg 2, and a fixing nut 58 is screwed to secure the seat. A connecting member 5 is fixed to the support leg 2 .

In addition, in the seat portion 3B(3) of the example shown in FIG. It is connected and unitized by

Here, it is more preferable that the seat portion 3 used in the bench 1 of this embodiment is unitized in a state in which the fixing bolts 57 are inserted in advance into the fixing bolt holes 52 of the seat portion connecting member 5 . By carrying the seat portion 3 to the construction site with the fixing bolt 57 inserted through the fixing bolt hole 52 in advance in this manner, the positioning work of the fixing bolt 57 at the construction site can be omitted. The operation of screwing the fixing nut 58 onto the fixing nut 57 to fix the seat portion 3 to the pair of support legs 2, 2 can be performed more efficiently and easily.
Further, when carrying the seat portion 3 with the fixing bolts 57 attached to the unitized seat portion 3 in this way, although illustration is omitted, the slits between the plurality of rod-shaped bodies 31 are For example, by inserting a support made of paper material or the like and transporting in this state, it is possible to prevent the fixing bolt 57 from coming off. Moreover, as the supporting material as described above, although illustration is omitted, it is also possible to use a material integrated with a packing material for packing the seat portion 3 .

As described above, the back portion 4 is made up of a plurality of rod-shaped bodies 41 spaced apart and arranged in parallel. are arranged so as to be aligned in parallel in the direction of One surface 41 a of the plurality of rods 41 serves as a backrest surface for the user of the bench 1 , and the other surface 41 b is attached to the back connecting member 6 .

The back portion 4 of this embodiment is unitized by attaching a plurality of rod-shaped bodies 41 arranged in parallel to the back portion 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 among these, three rod-shaped bodies 41 face the seat 3 side. They are arranged so as to face, and one rod-shaped body 41 is arranged so as to face upward.

Similarly to the case of the rod-shaped body 31 used for the seat portion 3, the material of the rod-shaped body 41 is not particularly limited, and for example, a material using a plastic material or a metal material can be appropriately adopted.
On the other hand, similarly to the rod-shaped body 31 used for the seat portion 3, the rod-shaped body 41 is also preferably made of a hollow extruded product or the like using a plastic material from the viewpoint of cost, weight reduction, and the like. Further, even when the rod-shaped body 41 is made of a hollow extruded product made of a plastic material, as shown in the cross-sectional view of FIG. is more preferable from the viewpoint of securing strength as a resin molded product.
Since the plurality of rod-shaped bodies 41 are made of hollow members as described above, the weight of the unitized back portion 4 is reduced. The load in the attachment work to the legs 2, 2 is also reduced.

Even when the rod-shaped body 41 is made of a plastic material, the type of plastic material is not particularly limited, and it can be adopted while considering the strength, weather resistance, and the like. The same material can be used.
Further, even when a hollow extruded product using a plastic material is adopted as the rod-shaped body 41, for example, a long extruded product made of the above material is suitably cut into a predetermined length. can use things.

As described above, the back connecting member 6 connects a plurality of rod-shaped bodies 41 to form a unitized back 4. In the back 4 shown in FIG. By screwing together the tightening nut 66 , the four rod-shaped bodies 41 are connected and unitized by the back connecting member 6 .
1, 2 and 5 is configured to have a substantially L-shaped cross section so that the three rod-shaped bodies 41 face the seat 3 side as described above. , and one rod-shaped body 41 is attached so as to face upward.

The material of the back connecting member 6 is not particularly limited, but like the seat connecting member 5, a plate-shaped metal material having strength enough to withstand use as a bench, such as steel, is used.

As in the example shown in FIG. 5, the back connecting member 6 is provided with through holes corresponding to the respective bolts and nuts shown in FIGS.
Specifically, the back connecting member 6 is provided with a common tightening bolt hole 61 through which a common tightening bolt 65 for fixing each of the plurality of rods 41 is inserted. Further, the back connecting member 6 is 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. Although part of the illustration is omitted in the example shown in FIG. is provided in In addition, in the illustrated example of the back portion connecting member 6, the fixing bolt hole 62 is arranged facing the seat portion 3 side among the three slits secured by the separation of the four rod-shaped bodies 41. It is provided at a total of four locations in two rows at positions corresponding to the slits of the book.
Then, a fixing bolt 67 is inserted 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 screwed with a fixing nut 68 . Thereby, the back connecting member 6 is fixed to the supporting leg 2 .

In addition, in the back portion 4 of the example shown in FIG. It is

Here, the back portion 4 used for the bench 1 of this embodiment is unitized in a state in which the fixing bolts 67 are inserted in advance into the fixing bolt holes 62 of the back portion connecting member 6, as in the case of the seat portion 3 described above. more preferably. By carrying the back 4 to the construction site in such a state, it is possible to omit the work of positioning the fixing bolts 67 at the construction site. 2, 2 can be fixed more efficiently and easily.
Also in this case, as in the case of the seat portion 3 described above, although illustration is omitted, a support made of, for example, a paper material is inserted into the slits between the plurality of rod-like members 41, and the seat is conveyed in this state. By doing so, it is possible to prevent the fixing bolt 67 from coming off. As in the case of the seat portion 3, it is also possible to use a support material that is integrated with the packing material for packing the back portion 4. FIG.

According to the bench 1 of the present embodiment, the seat portion 3 is unitized by the seat portion connecting member 5 in a state in which the plurality of rod-shaped bodies 31 are arranged in parallel. is fixed to the seat portion fixing surface 22 of the pair of support legs 2, 2, it is possible to subdivide each member, for example, with a weight of 20 kg or less per package. Easier to transport. In addition, since the seat portion 3 is fixed to the pair of support legs 2, 2 in a unitized state, the seat portion 3 is fixed to the pair of support legs 2, 2 with the fixing bolts 67 at the construction site of the bench 1. The work of screwing and fixing the nut 68 can be greatly simplified.
In addition, since each member such as the seat portion 3 and the back portion 4 can be packed and transported as a unit, it is possible to omit detailed positioning work of each member during construction, so that better workability can be obtained. .

Conventionally, when each component that makes up a bench is divided and brought to the construction site, it is possible to reduce the burden on workers in terms of weight and transportation costs, but the burden of assembly work at the construction site increases. I had concerns. On the other hand, according to the bench 1 of the present embodiment, even if each member constituting the bench is subdivided, it is possible to reduce the labor involved in construction as much as possible and improve the efficiency of construction work. Become.

A fixing bolt 57 is inserted between a fixing bolt hole 52 provided in the seat connecting member 5 and the seat fixing holes 22a provided in the pair of support legs 2, 2, and screwed with a fixing nut 58. Since the seat portion connecting member 5 is fixed to the pair of support legs 2, 2, similarly to the above, the work of fixing the seat portion 3 to the pair of support legs 2, 2 at the construction site of the bench 1 can be greatly reduced. Can be simplified. In addition, it becomes possible to fix the seat portion 3 to the pair of support legs 2, 2 with high positional accuracy.

Further, the back portion 4 is unitized by the back portion connecting member 6 in a state in which a plurality of rod-shaped bodies 41 are arranged in parallel, and the back portion connecting member 6 is provided on the pair of support legs 2, 2 of the projecting portion 23. Since it is configured to be fixed to the back fixing surface 24, each member can be subdivided with a weight of 20 kg or less per package, for example, as described above, and the worker can easily transport it to the construction site. In addition, since the back portion 4 is fixed to the pair of support legs 2, 2 in a unitized state like the seat portion 3, the back portion 4 can be attached to the pair of support legs 2, 2 at the construction site of the bench 1. This greatly simplifies the fixing work.

A fixing bolt 67 is inserted between a 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 screwed with a fixing nut 68. Also, since the back connecting member 6 is fixed to the pair of support legs 2, 2, the work of fixing the back 4 to the pair of support legs 2, 2 at the construction site of the bench 1 is greatly simplified as described above. can. Also, the back 4 can be fixed to the pair of support legs 2, 2 with high positional accuracy.

Although detailed illustration is omitted in FIGS. 2 and 3, in this embodiment, the head of the fixing bolt 57 for fixing the seat connecting member 5 has a polygonal shape in plan view. It is preferable that the head of the fixing bolt 57 is engaged in a slit between the plurality of rod-shaped bodies 31 in the seat portion 3 to be rotationally fixed.
As a result, when the seat portion 3 is fixed to the pair of support legs 2, 2, it is possible to prevent the fixing bolt 57 from rotating idly.

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 the head of this fixing bolt 67 is located between the plurality of rod-shaped bodies 41 in the back 4. It is preferably configured to engage and rotate within the slit.
Thus, as in the case of the seat portion 3, when the back portion 4 is fixed to the pair of support legs 2, 2, it is possible to prevent the fixing bolts 67 from spinning idle, which has the effect of greatly improving the work efficiency at the construction site. can get.

Furthermore, in the present embodiment, as shown in FIGS. 2 and 3, the fixing nut 58 screwed with the fixing bolt 57 and the fixing nut 68 screwed with the fixing bolt 67 are composed of a binding nut. is more preferable from the viewpoint of further improving the workability at the construction site.
Further, although detailed illustration is omitted in this embodiment, for example, using an INPULL nut (registered trademark) as the fixing nut 68 makes it easier to screw the fixing bolt 67 and the fixing nut 68 together. It is more preferable from the viewpoint of greatly improving workability.

1 and 2 (see also FIG. 4), a plurality of unitized seat portions 3 (3A, 3B) are provided, and the plurality of seat portions 3A, 3B are provided. may be fixed to the seat portion fixing surface 22 of the pair of support legs 2, 2 in a state in which they are aligned in parallel.
As a result, for example, even when assembling a bench with a large seat depth, it is possible to divide each member into small parts with small weights, which facilitates transportation to a construction site by a worker. In addition, although the number of seats 3 (3A, 3B) installed at a construction site increases, the work of fixing the seats 3A, 3B to the pair of support legs 2, 2 can be simplified as much as possible. be possible.

Similarly, in the present embodiment, although detailed illustration is omitted, a plurality of unitized backs 4 are provided, and the pair of support legs 2, 2 are arranged in a state in which the plurality of backs 4 are aligned in parallel. It may be fixed to the back fixing surface 24 .
As a result, as in the case of the seat part 3, for example, even when assembling a bench with a large height dimension on the back side, it is possible to divide each member into small parts with a small weight, so that it can be delivered to the construction site by the worker. transportation becomes easier. In addition, even though the number of backs 4 installed at the construction site increases, the work of fixing the backs 4 to the pair of support legs 2, 2 can be simplified as much as possible.

Further, in the present embodiment, a plurality of rod-shaped seats are arranged between the pair of support legs 2, 2 in parallel with the pair of support legs 2, 2, and constitute the unitized seat portion 3. A band plate attached to the lower surface 31b side of the body 31 may be provided.
More specifically, as in the example shown in FIGS. 6 and 7, the unit is arranged between the pair of support legs 2, 2 and in parallel with the pair of support legs 2, 2. A band plate 8 may be provided so as to cover both the lower surface 31b side of the plurality of rod-shaped bodies 31 constituting the seat portion 3 and the other surface 41b side of the plurality of rod-shaped bodies 41 constituting the back portion 4. .
By providing such a strip plate, it is possible to ensure strength in the entire width direction even for a bench having a very wide width of 1200 mm or more, for example.
Further, in the case where such a strip plate 8 is grounded, although not shown, a support leg 2 is further arranged at a position corresponding to the strip plate 8, and the strip plate 8 is fixed to the support leg 2. may be adopted.

<How to assemble the bench>
Hereinafter, a method for assembling the bench 1 of this embodiment will be described in detail with reference to FIGS. 6 and 7. FIG.
In the following description, a more detailed configuration of the bench 1 will be described with appropriate reference to FIGS. 1 to 5, and the detailed description may be omitted.

The method of assembling the bench of this embodiment includes the bench 1 (1A) of this embodiment described above, that is, the seat portion 3 arranged in parallel and the ground portion 21 whose lower side is fixed to the installation surface. A frame-shaped member having a seat portion fixing surface 22 to which the seat portion 3 is fixed above the ground portion 21 and a pair of support legs 2 arranged separately from each other. are arranged so as to be aligned in parallel in a direction orthogonal to a pair of support legs 2, 2, and a plurality of rod-shaped bodies 31 are unitized by a seat connecting member 5. 1 (1A).
Specifically, the method of assembling the bench of this embodiment includes at least a grounding step (1) of fixing the grounding part 21 to the installation surface S while arranging the pair of support legs 2 in parallel, and unitizing a seat portion installation step (2) of installing the seat portion 3 on the seat portion fixing surface 22 of the pair of support legs 2, 2 such that the plurality of rod-shaped bodies 31 are orthogonal to the pair of support legs 2, 2; and a seat portion fixing step (3) of fixing the unitized seat portion 3 to the pair of support legs 2, 2 by fixing the seat portion connecting member 5 to the seat portion fixing surface 22. .

In addition to the above steps (1) to (3), in the present embodiment gas, a plurality of rod-shaped bodies 41 are spaced apart and aligned in parallel and unitized by the back connecting member 6. a back portion installation step (4) of installing the back portion 4 on the back portion fixing surface 24 provided with the pair of support legs 2, 2 such that the plurality of rod-shaped bodies 41 are perpendicular to the pair of support legs 2, 2; An example including a back portion fixing step (5) of fixing the unitized back portion 4 to the pair of support legs 2, 2 by fixing the member 6 to the back portion fixing surface 24 will be described.

[Grounding step (1)]
In the grounding step (1), as shown in FIG. 6, the grounding portion 21 is fixed to the installation surface S while the pair of support legs 2, 2 are arranged in parallel (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 grounding portion 21 can be fixed to the installation surface S with high strength.

[Seat installation step (2)]
Next, in the seat portion installation step (2), as shown in FIG. It is installed on the seat fixing surface 22 of the support legs 2,2.
At this time, first, the positions of the fixing bolt holes 52 provided in the seat portion connecting member 5 that connects the plurality of rod-shaped bodies 31 and the fixing bolts 57 inserted through the fixing bolt holes 52 are aligned with each other. The seat 3 is installed on the seat fixing surface 22 so as to roughly correspond to the positions of the seat fixing holes (not shown) provided in the seat fixing surface 22 of the seat 2. As shown in FIG. That is, the seat portion 3 is placed on the seat portion fixing surface 22 in a state in which the threaded portion of the fixing bolt 57 is inserted into the seat portion fixing hole provided as a loose hole in the seat portion fixing surface 22 .

Next, the packing material (not shown) is removed from the unitized seat portion 3, and the supporting material (not shown) that supports the fixing bolts 57 and is inserted into the slits between the rod-shaped bodies 31 is removed.
Here, in this embodiment, since the bolt avoiding holes 22a provided in the seat portion fixing surface 22 are formed to be larger than the heads of the co-tightening bolts 55, the seat portion 3 is attached to the seat portion fixing surface 22. Alignment during installation is facilitated.

[Seat fixing step (3)]
Next, in the seat portion fixing step (3), the seat portion connecting member 5 is fixed to the seat portion fixing surface 22 as described above, so that the unitized seat portion 3 is attached to the pair of support legs 2, 2. fixed to
At this time, by arranging a fixing nut 58 on the surface of the support leg 2 opposite to the seat portion fixing surface 22 , the fixing bolt 57 and the fixing nut 58 are screwed together to connect the seat portion 3 to the pair of support legs. It can be fixed to 2,2.

Here, in the present embodiment, the head of the fixing bolt 57 has a polygonal shape in plan view, and the head of the fixing bolt 57 engages in the slit between the plurality of rod-shaped bodies 31 in the seat portion 3. Since the fixed bolt 57 can be prevented from rotating idle, the working efficiency when fixing the seat portion 3 to the pair of support legs 2, 2 is greatly improved.

Further, in the present embodiment, for example, when packing and shipping the unitized seat portion 3, the fixing bolt hole arranged on the outermost side in the length direction of the rod-shaped body 31, that is, in the width direction of the bench 1 A fixing bolt 57 is inserted through the seat 52, and the fixing bolt 57 and the fixing nut 58 are screwed together at this position to fix the seat portion 3 to the pair of support legs 2, 2, thereby stabilizing the mounting state. The effect is obtained (see also FIG. 4).

[Back Installation Step (4)]
Next, in the method for assembling the bench 1 of the present embodiment, as described above, in the step of installing the back portion (4), the unitized back portion 4 is attached to the pair of support legs 2, 2 by the plurality of rod-shaped bodies 41. It is installed on the back fixing surface 24 of the pair of support legs 2, 2 so as to be perpendicular to the .
At this time, first, the fixing bolts 67 inserted through the fixing bolt holes 62 provided in the back connecting member 6 connecting the plurality of rods 41 are provided on the back fixing surfaces 24 of the pair of support legs 2,2. The back portion 4 is temporarily fixed on the back portion fixing surface 24 by inserting it into the back portion fixing hole (not shown).

Next, the packing material (not shown) is removed from the unitized back portion 4, and the supporting material (not shown) that supports the fixing bolts 67 and is inserted into the slits between the rod-shaped bodies 41 is removed.
Here, in this embodiment, as in the case of the seat portion 3, the bolt avoiding holes 24a provided in the back portion fixing surface 24 are formed to be larger than the heads of the co-tightening bolts 65, so that the back portion 4 can be secured. Alignment when installing on the back fixing surface 24 is facilitated.

[Back fixing step (5)]
Next, in the back portion fixing step (5), the unitized back portion 4 is fixed to the pair of support legs 2, 2 by fixing the back portion connecting member 6 to the back portion fixing surface 24 as described above.
At this time, by arranging a fixing nut 68 on the surface of the support leg 2 opposite to the back portion fixing surface 24 , the fixing bolt 67 and the fixing nut 68 are screwed together so that the back portion 4 is fixed to the pair of support legs 2 , 24 . 2 can be fixed.

Here, in the present embodiment, as in the case of the seat portion 3, the head portion of the fixing bolt 67 is engaged with the slit between the plurality of rod-shaped bodies 41 in the back portion 4 and is rotationally fastened. , the fixing bolt 67 can be prevented from idling, so that the work efficiency in fixing the back portion 4 to the pair of support legs 2, 2 is greatly improved.

Furthermore, as in the case of the seat portion 3, for example, when packing and shipping the unitized back portion 4, the fixing bolt 67 is inserted into the fixing bolt hole 62 arranged on the outermost side in the length direction of the bar 41. In this position, a fixing bolt 67 and a fixing nut 68 are screwed together to fix the back portion 4 to the pair of support legs 2, 2, thereby stabilizing the mounting state (Fig. 5). see also).

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

According to the method for assembling the bench 1 of the present embodiment, the grounding process (1), the seat installation process (2), and the seat fixing process (3) are provided as described above, and the back installation process (4 ) and the back fixing step (5), it is possible to divide each member into small weights and perform construction in the same manner as above, reducing the load on the worker at the construction site, and the seat 3 and Work efficiency when fixing the back portion 4 to the pair of supporting legs 2, 2 is greatly improved.

<Effect>
As described above, according to the bench 1 of this embodiment, the seat portion 3 is unitized by the seat portion connecting member 5 in a state in which a plurality of rod-shaped bodies 31 are arranged in parallel. 5 is fixed to the seat fixing surface 22 of the pair of support legs 2,2. Furthermore, according to the present embodiment, the back portion 4 is formed by a back portion connecting member 6 in which a plurality of rod-shaped bodies 41 are arranged in parallel and arranged as a unit. A configuration to be fixed to the back fixing surface 24 is adopted.
According to the bench 1 of the present embodiment, by adopting the above configuration, each member can be subdivided with a weight of 20 kg or less per package, for example, and can be easily transported to a construction site by a worker. and reduce shipping costs. In addition, since the seat part 3 and the back part 4 are fixed to the pair of support legs 2, 2 in a unitized state, the work of fixing the seat part and the back part 4 to the pair of support legs 2, 2 at the construction site. can be greatly simplified. Furthermore, since each member can be packed as a unit, it is possible to omit detailed alignment work of each member during construction, and thus, more excellent workability can be obtained.
Therefore, it is possible to efficiently assemble each member at the construction site while reducing the transportation load by subdividing each member to reduce the weight.

Further, according to the method of assembling the bench 1 of the present embodiment, the seat portion installation step (2) of installing the unitized seat portion 3 on the seat portion fixing surface 22 of the pair of support legs 2, 2; A seat portion fixing step (3) of fixing the unitized seat portion 3 to the pair of support legs 2 by fixing the connecting member 5 to the seat portion fixing surface 22 . Further, in this embodiment, the unitized back portion 4 is further installed on the back portion fixing surface 24 of the pair of support legs 2, 2 so that the plurality of rod-shaped bodies 41 are orthogonal 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 by fixing the back connecting member 6 to the back fixing surface 24. method is adopted.
According to the method of assembling the bench 1 of the present embodiment, as described above, each member can be subdivided with a small weight for construction, and the load on the worker at the construction site can be reduced. Work efficiency when fixing the back portion 4 to the pair of supporting legs 2, 2 is greatly improved. Furthermore, since each member can be packed as a unit, it is possible to omit detailed alignment work of each member during construction, and thus, more excellent workability can be obtained.
Therefore, similarly to the above, it is possible to efficiently perform the work of assembling each member at the construction site while reducing the transportation load.

<Other forms>
Each configuration and combination thereof in the above-described embodiments are examples, and addition, omission, replacement, and other modifications of the configuration are possible without departing from the scope of the present invention. Moreover, the present invention is not limited by the above-described embodiments, but only by the claims.

The bench of this embodiment is not limited to the configuration having the back portion 4 as described in the above embodiment, and for example, as in the example shown in FIG. It is also possible to configure the bench 1A with a configuration in which only the seat portion 3 that is mounted is attached.
The bench 1A having such a configuration can be applied to uses such as train station platforms, bus stops, and the like, where people are seated in a relatively short period of time.

In the bench 1A configured as described above, similarly to the bench 1 shown in the above embodiment, the seat portion 3 is unitized by the seat portion connecting member in a state in which a plurality of rod-shaped bodies 31 are aligned in parallel. In addition, since the seat portion connecting member is fixed to the seat portion fixing surface of the pair of support legs 2, 2, each member can be subdivided with a weight of 20 kg or less per package, for example. It is easy to transport to the construction site by Further, since the seat portion 3 is fixed to the pair of support legs 2, 2 in a unitized state, the work of fixing the seat portion 3 to the pair of support legs 2, 2 at the construction site of the bench can be greatly reduced. Can be simplified. Furthermore, since each member can be packed as a unit, it is possible to omit detailed alignment work of each member during construction, and thus, more excellent workability can be obtained.
Therefore, it is possible to efficiently assemble each member at the construction site while reducing the transportation load by subdividing each member to reduce the weight.

INDUSTRIAL APPLICABILITY The bench of the present invention is capable of efficiently assembling each member at a construction site while reducing the transportation load by subdividing each member to reduce weight. Therefore, the present invention can be used, for example, in waiting rooms such as railway stations and airports, public spaces such as department stores and mass retailers, entertainment facilities such as parks and theme parks, etc., for use by passers-by and visitors for rest and meals. It is very suitable for use in constructing benches.

1, 1A... Bench 2, 2A... Support legs (a pair of support legs)
21 Ground part 22 Seat fixed surface 22a Bolt avoidance hole 23 Projecting part 24 Back fixing surface 24a Bolt avoidance hole 3 Seat (unitized seat)
31 ... rod-shaped body (a plurality of rod-shaped bodies)
31a... Upper surface 31b... Lower surface 31c... Rib 4... Back (unitized back)
41 ... rod-shaped body (a plurality of rod-shaped bodies)
41a... One side 41b... The other side 41c... Rib 5... Seat connecting member 51... Joint bolt hole 52... Fixing bolt hole 55... Joint tightening bolt 56... Joint 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...Strip plate S...Installation surface

Claims (8)

a seat portion in which a plurality of bar-shaped bodies are spaced apart and arranged in parallel;
A pair of supports that are spaced apart from each other and are composed of a frame-shaped member having a ground portion fixed to the installation surface on the lower side, and a seat portion fixing surface above the ground portion to which the seat portion is fixed. having legs and
The seat portion is arranged such that the plurality of rod-shaped bodies are aligned in parallel in a direction orthogonal to the pair of support legs, and the plurality of rod-shaped bodies are unitized by a seat portion connecting member. and
The bench is characterized in that the seat connecting member is fixed to the seat fixing surfaces of the pair of support legs so that the seat is unitized and fixed to the pair of support legs. The seat connecting member is provided with a bolt hole at a position corresponding to the slit secured 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,
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, the seat is 2. The bench according to claim 1, wherein a connecting member is fixed to said pair of support legs. Further, a plurality of the unitized seat portions are provided, and the plurality of seat portions are arranged in parallel and fixed to the seat portion fixing surfaces of the pair of support legs. A bench according to claim 1 or claim 2. Further, a band plate is provided between the pair of support legs and parallel to the pair of support legs and attached to the bottom surface side of the unitized seat portion. A bench according to any one of claims 1 to 3. Furthermore, it has a back unitized by a back connecting member in a state in which a plurality of bar-shaped bodies are spaced apart and aligned in parallel,
The pair of support legs further has an L-shaped cross section provided with a protruding portion having a back portion fixing surface to which the back portion is fixed, which is provided so as to protrude upward from the seat portion fixing surface,
By fixing the back connecting member to the back fixing surfaces of the pair of supporting legs, the plurality of rod-shaped bodies are aligned in parallel in a direction orthogonal to the pair of supporting legs. The bench according to any one of claims 1 to 4, wherein the bench is unitized and fixed to the pair of supporting legs. 6. The bench according to any one of claims 1 to 5, wherein the plurality of rod-shaped bodies are hollow members. It has a seat portion in which a plurality of rod-shaped bodies are arranged in parallel and spaced apart from each other, a ground portion fixed to the installation surface on the lower side, and a seat portion fixing surface to which the seat portion is fixed above the ground portion. and a pair of support legs arranged with a space therebetween, wherein the plurality of rod-shaped bodies are parallel to the pair of support legs in a direction perpendicular to the support legs. A method for assembling a bench in which the plurality of rod-shaped bodies are arranged to be aligned and unitized by a seat connecting member,
at least,
a grounding step of fixing the ground portion to the installation surface while arranging the pair of support legs in parallel;
a seat portion installation step of installing the unitized seat portion on the seat portion fixing surface of the pair of support legs such that the plurality of rod-shaped bodies are orthogonal to the pair of support legs;
a seat portion fixing step of fixing the unitized seat portion to the pair of support legs by fixing the seat portion connecting member to the seat portion fixing surface;
A method for assembling a bench, comprising: Further, the back unitized by the back connecting member in a state in which a plurality of rod-shaped bodies are spaced apart and aligned in parallel is supported by the pair of support legs so that the plurality of rod-shaped bodies are orthogonal to the pair of support legs. A back portion installation step of installing on a back portion fixing surface provided on the leg;
a back portion fixing step of fixing the unitized back portion to the pair of support legs by fixing the back portion connecting member to the back portion fixing surface;
8. The method of assembling a bench according to claim 7, comprising:

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