JP2022049339A - Frame structure and assembly method of the same - Google Patents

Abstract

To achieve reduction of assembly costs of a frame structure and reduce assembly time of the frame structure.SOLUTION: A first reinforcement member 20 extending in a predetermined first direction is provided at the inner side of a structure body 12. A first insertion slit 22s is formed at the first reinforcement member 20. A first installation slit 22p is formed along the predetermined first direction at the first reinforcement member 20. At the inner side of the structure body 12, a second reinforcement member 26 extending in a second longitudinal direction is provided orthogonally to the first reinforcement member 20. The second reinforcement member 26 is formed with a second insertion slit 28s for inserting the first insertion slit 22s of the first reinforcement member 20. The second installation slit 28p is formed along a predetermined second direction at the second reinforcement member 26. A catch 32 is housed in the first installation slit 22p of the first reinforcement member 20 and the second installation slit 28p of the second reinforcement member 26.SELECTED DRAWING: Figure 1

Description

The present invention relates to a frame structure and an assembly method for assembling the frame structure.

In a frame structure used as a part or an accessory of various machines such as industrial machines or various devices, a reinforcing structure for reinforcing the structure body may be provided in a cross shape inside the frame-shaped structure body. .. The reinforcing structure includes a first reinforcing member provided inside the main body of the structure, and the first reinforcing member extends in a predetermined first direction. The reinforcing structure includes a second reinforcing member provided inside the structure body at right angles to the first reinforcing member, and the second reinforcing member is in a predetermined second direction orthogonal to a predetermined first direction. It is extending. The reinforcing structure includes a third reinforcing member provided inside the main body of the structure at right angles to the first reinforcing member, and the third reinforcing member extends in a predetermined second direction and sandwiches the first reinforcing member. Is arranged in series with the second reinforcing member.

When assembling the frame structure, first, the first reinforcing member is installed inside the structure main body, and the end portion of the second reinforcing member is in contact with the first reinforcing member, and the inside of the structure main body is in contact with the first reinforcing member. The second reinforcing member is installed so as to be orthogonal to the first reinforcing member. Next, with the end of the third reinforcing member in contact with the first reinforcing member, the third reinforcing member is orthogonal to the first reinforcing member and in series with the second reinforcing member inside the main body of the structure. Install in. Then, the second reinforcing member and the third reinforcing member are temporarily fixed to the first reinforcing member by the jig for the reinforcing structure, and the first reinforcing member, the second reinforcing member, and the third reinforcing member are assembled. After that, the first reinforcing member, the second reinforcing member, and the third reinforcing member are joined to the main body of the structure by welding.

As prior art related to the present invention, there is one shown in Patent Document 1.

Jitsukaisho 62-79080

By the way, as described above, in order to assemble the first reinforcing member, the second reinforcing member, and the third reinforcing member, a jig for the reinforcing structure is required, and a jig or the like used for assembling the frame structure is used. There is a problem that the number increases and the assembly cost of the frame structure increases. In addition, there are many restrictions on the use of jigs for reinforcing structures, such as installing jigs for reinforcing structures in places that do not interfere with welding work, which takes time and effort and increases the assembly time of the frame structure. There's a problem.

Therefore, an object of the present invention is to provide a frame structure and an assembling method thereof, which can shorten the assembling time while reducing the assembling cost.

The frame structure according to the first embodiment includes a frame-shaped structure main body and a reinforcing structure provided in a cross shape inside the structure main body to reinforce the structure main body. The reinforcing structure includes a first reinforcing member provided inside the main body of the structure and extending in a predetermined first direction. A first insertion slit is formed in the first reinforcing member, and a first installation slit passing through the end of the first insertion slit is formed in the first reinforcing member along the predetermined first direction. The reinforcing structure includes a second reinforcing member provided inside the structure main body orthogonally to the first reinforcing member and extending in a predetermined second direction orthogonal to the predetermined first direction. A second insertion slit for inserting the first insertion slit of the first reinforcing member is formed in the second reinforcing member, and a second installation passing through the end of the second insertion slit in the second reinforcing member. The slit is formed along the predetermined second direction. The central portion of the second installation slit of the second reinforcing member coincides with the central portion of the first installation slit of the first reinforcing member. The reinforcing structure includes a clasp housed in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member.

According to the first embodiment, in a state where the first insertion slit of the first reinforcing member is inserted into the second insertion slit of the second reinforcing member, the stopper is attached to the first of the first reinforcing piece. 1 It is housed in the installation slit and in the second installation slit of the second reinforcing piece. As a result, the first reinforcing member and the second reinforcing member can be assembled without using a jig for the reinforcing structure.

The frame structure according to the second embodiment includes a frame-shaped structure main body and a reinforcing structure provided in a cross shape inside the structure main body to reinforce the structure main body. The reinforcing structure includes a first reinforcing member provided inside the main body of the structure and extending in a predetermined first direction, and the first reinforcing member includes a flat plate-shaped first reinforcing piece and the first reinforcing piece. It has a flat plate-shaped first adjacent piece that is orthogonal to and adjacent to. A first insertion slit is formed in the first reinforcing piece, and a third insertion slit is formed in the first adjacent piece. The reinforcing structure includes a second reinforcing member provided inside the structure main body orthogonally to the first reinforcing member and extending in a predetermined second direction orthogonal to the predetermined first direction. The two reinforcing members have a flat plate-shaped second reinforcing piece and a flat plate-shaped second adjacent piece orthogonal to the second reinforcing piece. A second insertion slit for inserting the first insertion slit of the first reinforcing piece is formed in the second reinforcing piece, and the second adjacent piece is fitted with a part of the first adjacent piece. Two notches are formed. A part of the second adjacent piece fits with the third insertion slit of the first adjacent piece.

According to the second embodiment, the first insertion slit of the first reinforcing piece is inserted into the second insertion slit of the second reinforcing piece, and the third insertion slit of the first adjacent piece is inserted into the second insertion slit. A part of the first adjacent piece is fitted with a part of the second adjacent piece, and a part of the first adjacent piece is fitted with the second notch of the second adjacent piece. As a result, the first reinforcing member and the second reinforcing member can be assembled without using a jig for the reinforcing structure.

In the frame structure according to the third embodiment, in addition to the configuration of the frame structure according to the second embodiment, the first reinforcing member has the predetermined first installation slit passing through the end of the first insertion slit. A second installation slit, which is formed along the first direction and passes through the end of the second insertion slit, is formed in the second reinforcing member along the predetermined second direction. The central portion of the first installation slit of the first reinforcing member and the central portion of the second installation slit coincide with each other. Further, the frame structure according to the third embodiment includes a clasp housed in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member.

Then, according to the third embodiment, the same operation as that of the second embodiment is exhibited.

The method for assembling the frame structure according to the fourth embodiment is a method for assembling the frame structure according to the first embodiment or the third embodiment. With the clasp placed in the first installation slit of the first reinforcing member, the first insertion slit of the first reinforcing member is inserted into the second insertion slit of the second reinforcing member. The central portion of the first installation slit of the first reinforcing member and the central portion of the second installation slit of the second reinforcing member are aligned with each other. Next, by rotating the clasp, the clasp is accommodated in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member. Assemble the reinforcing member and the second reinforcing member. After that, the reinforcing structure provided with the first reinforcing member and the second reinforcing member is installed in a cross shape inside the structure main body.

According to the present invention, it is possible to shorten the assembly time of the frame structure while reducing the assembly cost of the frame structure.

FIG. 1 is a perspective view of the frame structure according to the first embodiment. FIG. 2 is an exploded perspective view of the frame structure according to the first embodiment. FIG. 3 is an exploded perspective view of a part of the reinforcing structure of the frame structure according to the first embodiment. FIG. 4 is a cross-sectional view of a part of the reinforcing structure of the frame structure according to the first embodiment. FIG. 5A is a perspective view illustrating a method of assembling the frame structure according to the first embodiment. FIG. 5B is a perspective view illustrating a method of assembling the frame structure according to the first embodiment. FIG. 5C is a perspective view illustrating a method of assembling the frame structure according to the first embodiment. FIG. 6 is a perspective view of the frame structure according to the second embodiment. FIG. 7 is an exploded perspective view of the frame structure according to the second embodiment. FIG. 8 is an exploded perspective view of a part of the reinforcing structure of the frame structure according to the second embodiment. FIG. 9 is a cross-sectional view of a part of the reinforcing structure of the frame structure according to the second embodiment.

Hereinafter, the first embodiment and the second embodiment will be described with reference to FIGS. 1 to 9.

In the specification and claims of the present application, the term "frame-shaped" means a frame-shaped, a container-shaped, a tray-shaped, and a skeleton-shaped. "Provided" means that it is indirectly provided via another member in addition to being directly provided. "Provided in a cross shape" means that it is provided so as to form at least one cross portion. In the drawings, "D1" refers to a predetermined first direction, and "D2" refers to a predetermined second direction.

As shown in FIGS. 1 and 2, the frame structure 10 according to the first embodiment is a structure used as a part or an accessory of various machines such as industrial machines or various devices. The frame structure 10 includes a rectangular frame-shaped structure main body 12, and the structure main body 12 includes a pair of first main body members 14 extending in a predetermined first direction. The pair of first main body members 14 are separated from each other in a predetermined second direction orthogonal to a predetermined first direction, and each first main body member 14 is made of angle steel (angle member). Further, a second main body member 16 extending in a predetermined second direction is joined between one ends of the pair of first main body members 14 and between the other ends of the pair of first main body members 14 by welding. The second main body member 16 is made of angle steel. Instead of each first main body member 14 and each second main body member 16 being made of angle steel, shaped steel other than angle steel such as channel steel may be used.

As shown in FIGS. 1 to 4, a reinforcing structure 18 for reinforcing the structure main body 12 is provided in a cross shape inside the structure main body 12. The specific configuration of the reinforcing structure 18 is as follows.

Inside the structure main body 12, a first reinforcing member 20 extending in a predetermined first direction is provided. Each end of the first reinforcing member 20 is joined to the central portion of the second main body member 16 in a predetermined second direction by welding. The first reinforcing member 20 is made of angle steel, which is one of the shaped steels, and has a flat plate-shaped first reinforcing piece 22 and a flat plate-shaped first adjacent piece 24 orthogonal to the first reinforcing piece 22. Have. Instead of the first reinforcing member 20 being made of angle steel, it may be made of shaped steel other than angle steel such as channel steel.

A first insertion slit 22s is formed in the central portion of the first reinforcing piece 22 in a predetermined first direction along the lateral direction of the first reinforcing piece 22, and the starting end of the first insertion slit 22s is , Located on the 24th side of the first adjacent piece. A chamfered portion 22c is formed on the starting end side of the first insertion slit 22s of the first reinforcing piece 22. Further, in the central portion of the first reinforcing piece 22 in the predetermined first direction, a first installation slit 22p passing through the end of the first insertion slit 22s is formed along the predetermined first direction. A rectangular third insertion slit (first notch) 24n is formed in the central portion of the first adjacent piece 24 in a predetermined first direction, and the third insertion slit 24n is the first insertion slit 22s. It is connected to the starting end and the chamfered portion 22c.

Inside the structure main body 12, a second reinforcing member 26 extending in a predetermined second direction is provided orthogonal to the first reinforcing member 20. Each end of the second reinforcing member 26 is joined to the central portion of the first main body member 14 in a predetermined first direction by welding. The second reinforcing member 26 is made of angle steel and has a flat plate-shaped second reinforcing piece 28 and a flat plate-shaped second adjacent piece 30 orthogonal to the second reinforcing piece 28. Instead of the second reinforcing member 26 being made of angle steel, it may be made of shaped steel other than angle steel such as channel steel.

At the center of the second reinforcing piece 28 in the predetermined second direction, a second insertion slit 28s for inserting the first insertion slit 22s of the first reinforcing piece 22 is provided in the lateral direction of the second reinforcing piece 28. It is formed along the same direction, and the starting end of the second insertion slit 28s is located on the opposite side of the second adjacent piece 30. Further, at the central portion of the second reinforcing piece 28 in the predetermined second direction, a second installation slit 28p passing through the end of the second insertion slit 28s is formed along the predetermined second direction. The length dimension of the second installation slit 28p of the second reinforcing piece 28 is set to the same dimension as the length dimension of the first installation slit 22p of the first reinforcing piece 22. The central portion of the second installation slit 28p of the second reinforcing piece 28 coincides with the central portion of the first installation slit 22p of the first reinforcing piece 22. Further, a rectangular second notch 30n is formed in the central portion of the second adjacent piece 30 in a predetermined second direction. The second notch 30n of the second adjacent piece 30 is a part of the first adjacent piece 24 and is fitted (aligned) with a portion adjacent to the third insertion slit 24n along a predetermined first direction. A portion of the second adjacent piece 30 adjacent to the second notch 30n along the lateral direction of the second reinforcing piece 28 is fitted (aligned) with the third insertion slit 24n of the first adjacent piece 24. )do.

As shown in FIGS. 3 and 4, a cross-shaped clasp 32 is provided from the first installation slit 22p of the first reinforcing piece 22 to the second installation slit 28p of the second reinforcing piece 28. The clasp 32 has four arm portions 32a formed at equal intervals radially, and the tips of the four arm portions 32a are arranged on concentric circles shown by the alternate long and short dash line in FIG. Further, the tips of the four arm portions 32a of the clasp 32 have a shape along the concentric circles, and by rotating the clasp 32, the tip of the clasp 32 can be smoothly inserted into the first installation slit 22p and the second installation slit 28p. It is the tip of the part to be housed. Two of the four arm portions 32a of the clasp 32 are housed in the first installation slit 22p of the first reinforcing piece 22, and the remaining two arm portions 32a are the second of the second reinforcing piece 28. 2 It is housed in the installation slit 28p. The tips of the four arm portions 32a of the clasp 32 are accommodated in contact with the inner wall surface of the first installation slit 22p and the inner wall surface of the second reinforcing piece 28 with a slight clearance (gap). Further, when welding the clasp 32 and the first reinforcing piece 22 and the clasp 32 and the second reinforcing piece 28, it is desirable that the clearance between them is small.

Two recesses 32d are symmetrically formed in the central portion of the clasp 32, and the two recesses 32d are used in the second reinforcing piece 28 when the first reinforcing member 20 and the second reinforcing member 26 are assembled. It engages with the edge of the second insertion slit 28s (see FIG. 5B).

Subsequently, the method of assembling the frame structure according to the first embodiment will be described with reference to FIGS. 1, 5A to 5C. The method for assembling the frame structure according to the first embodiment is a method for assembling the frame structure 10.

As shown in FIGS. 5A (a) and 5B and 5B (a) and (b), the first reinforcing piece 22 has a clasp 32 arranged in the first installation slit 22p of the first reinforcing piece 22. The first insertion slit 22s is inserted into the second insertion slit 28s of the second reinforcing piece 28. As a result, while engaging the two recesses 32d of the clasp 32 with the edges of the second insertion slit 28s in the second reinforcing piece 28, the central portion and the second of the first installation slit 22p of the first reinforcing piece 22. The central portion of the second installation slit 28p of the reinforcing piece 28 is aligned. Further, the third insertion slit 24n of the first adjacent piece 24 is fitted with a portion of the second adjacent piece 30 and adjacent to the second notch 30n along the lateral direction of the second adjacent piece 30. At the same time, a portion of the first adjacent piece 24 that is adjacent to the third insertion slit 24n along a predetermined first direction is fitted with the second notch 30n of the second adjacent piece 30.

Next, as shown in FIGS. 5C (a) and 5C, by rotating the clasp 32, the four arm portions 32a of the clasp 32 are accommodated in the first installation slit 22p and the second installation slit 28p. do. As a result, the first reinforcing member 20 and the second reinforcing member 26 can be assembled. Further, even if the first reinforcing member 20 is lifted, it can be fixed so as not to be separated from the second reinforcing member 26.

After that, as shown in FIG. 1, the reinforcing structure 18 provided with the first reinforcing member 20 and the second reinforcing member 26 is installed in a cross shape inside the structure main body 12. Then, each end of the first reinforcing member 20 is joined to the central portion of the second main body member 16 in a predetermined second direction by welding, and each end of the second reinforcing member 26 is joined to the predetermined center of the first main body member 14. It is joined to the central part in the first direction by welding. This completes the assembly work of the frame structure 10.

Before installing the reinforcing structure 18 inside the structure main body 12, the second main body member 16 is welded between one end of the pair of first main body members 14 and between the other ends of the pair of first main body members 14, respectively. Join them together.

Subsequently, the operation and effect of the first embodiment will be described.

The first insertion slit 22s of the first reinforcing piece 22 is inserted into the second insertion slit 28s of the second reinforcing piece 28, and the third insertion slit 24n of the first adjacent piece 24 is a part of the second adjacent piece 30. And a part of the first adjacent piece 24 is fitted with the second notch 30n of the second adjacent piece 30. Then, in that state, the clasp 32 is rotated to accommodate the four arm portions 32a in the first installation slit 22p and the second installation slit 28p. As a result, the first reinforcing member 20 and the second reinforcing member 26 can be assembled via the clasp 32 without using a jig for the reinforcing structure. In particular, since the tips of the four arm portions 32a of the clasp 32 are arranged on concentric circles, it is easy to fix the first reinforcing member 20 and the second reinforcing member 26 without using a jig for the reinforcing structure. Can be stabilized.

Therefore, according to the first embodiment, the number of appliances such as jigs used for assembling the frame structure 10 can be reduced, and the assembly cost of the frame structure 10 can be reduced. Further, according to the first embodiment, it is possible to significantly reduce the assembly time of the frame structure 10 by eliminating the trouble of attaching or removing the jig for the reinforcing structure. That is, according to the present embodiment, it is possible to significantly reduce the assembly time of the frame structure 10 while reducing the assembly cost of the frame structure 10.

When the first reinforcing member 20 and the second reinforcing member 26 are assembled by the two recesses 32d of the clasp 32, the clasp 32 does not interfere with the second insertion slit 28s, and is inside the first installation slit 22p and at the first. 2 Can be smoothly inserted and assembled in the installation slit 28p. Further, by rotating the four arm portions 32a of the clasp 32 and accommodating them in the first installation slit 22p and the second installation slit 28p, even if the first reinforcing member 20 is lifted, the second reinforcing member 26 and the second reinforcing member 26 The fixed state can be stabilized without separation.

As shown in FIGS. 6 and 7, the frame structure 34 according to the second embodiment is a structure used as a part or an accessory of various machines such as industrial machines or various devices. The frame structure 34 includes a frame-shaped structure main body 36, and the structure main body 36 is made of sheet metal. Further, the structure main body 36 includes a rectangular base plate 38 and flanges 40 formed at both ends of the base plate 38 in a predetermined first direction and extending in a predetermined second direction orthogonal to the predetermined first direction. ing. An engaging hole 38h is formed in the central portion of the base plate 38 of the structure main body 36.

Inside the structure main body 36, two reinforcing structures 42 for reinforcing the structure main body 36 are provided side by side in a cross shape. The specific configuration of the reinforcing structure 42 is as follows.

As shown in FIGS. 6 to 9, two first reinforcing members 44 extending in a predetermined first direction are provided inside the structure main body 36. The two first reinforcing members 44 are separated from each other in a predetermined second direction, and each first reinforcing member 44 is made of sheet metal. Each first reinforcing member 44 is joined to the base plate 38 and the flange 40 by welding. Further, in the central portion of each first reinforcing member 44 in a predetermined first direction, a first insertion slit 44s is formed along the lateral direction of each first reinforcing member 44. At the central portion of each first reinforcing member 44 in a predetermined first direction, a first installation slit 44p passing through the end of each first insertion slit 44s is formed along a predetermined first direction.

Inside the structure main body 36, a second reinforcing member 46 extending in a predetermined second direction is provided orthogonal to the two first reinforcing members 44. The second reinforcing member 46 is made of sheet metal and is joined to the base plate 38 by welding. Further, on both ends of the second reinforcing member 46 in a predetermined second direction, a second insertion slit 46s for inserting the first insertion slit 44s of the first reinforcing member 44 is a short side of the second reinforcing member 46. Each is formed along the direction. A second installation slit 46p passing through the end of the second insertion slit 46s is formed on both ends of the second reinforcing member 46 in a predetermined second direction, respectively, along a predetermined second direction. The length dimension of the second installation slit 46p of the second reinforcing member 46 is set to the same dimension as the length dimension of the first installation slit 44p of the first reinforcing member 44. The central portion of the second installation slit 46p of the second reinforcing member 46 coincides with the central portion of the first installation slit 44p of the first reinforcing member 44. Further, an engaging projection 46b that engages with the engaging hole 38h of the base plate 38 is formed in the central portion of the second reinforcing member 46 in the longitudinal direction.

As shown in FIGS. 8 and 9, a cross-shaped clasp 48 is provided from the first installation slit 44p of each first reinforcing member 44 to each second installation slit 46p of the second reinforcing member 46. .. Each clasp 48 has four arm portions 48a formed at equal intervals radially, and the tip surfaces of the four arm portions 48a are arranged on concentric circles and have a shape along the concentric circles. .. Two of the four arm portions 48a of each clasp 48 are housed in the first installation slit 44p of each first reinforcing member 44, and the remaining two arm portions 48a are the second reinforcing member 46. It is housed in each of the second installation slits 46p. Further, two recesses 48d are symmetrically formed in the central portion of each clasp 48, and the two recesses 48d are used when the first reinforcing member 44 and the second reinforcing member 46 are assembled. It engages with the edge of each second insertion slit 46s in the reinforcing member 46.

Subsequently, a method of assembling the frame structure according to the second embodiment will be described. The method for assembling the frame structure according to the second embodiment is a method for assembling the frame structure 34.

With the clasp 48 arranged in the first installation slit 44p of each first reinforcing member 44, the first insertion slit 44s of each first reinforcing member 44 is replaced with the second insertion slit 46s of each second reinforcing member 46. Plug it into. As a result, the central portion of the first installation slit 44p of each first reinforcing member 44 while engaging the two recesses 48d of each stopper 48 with the edge portion of each second insertion slit 46s in the second reinforcing member 46. And the central portion of the second installation slit 46p of the second reinforcing member 46 are aligned with each other.

Next, by rotating each stop 48, the four arm portions 48a of each stop 48 are placed in the first installation slit 44p of each first reinforcing member 44 and each second installation slit 46p of the second reinforcing member 46. Contain inside. As a result, the two first reinforcing members 44 and the second reinforcing member 46 can be assembled.

After that, by inserting the engaging projection 46b of the second reinforcing member 46 into the engaging hole 38h of the base plate 38, the two first reinforcing members 44 and the second reinforcing member 46 are provided inside the structure main body 36. The reinforcing structure 42 is installed in a cross shape. Then, each first reinforcing member 44 is joined to the base plate 38 and the flange 40 by welding, and the second reinforcing member 46 is joined to the base plate 38 by welding. This completes the assembly work of the frame structure 34.

Subsequently, the operation and effect of the second embodiment will be described.

With the first insertion slit 44s of each first reinforcing member 44 inserted into each second insertion slit 46s of the second reinforcing member 46, each clasp 48 is rotated to form each of the four arm portions 32a. 1 It is housed in the first installation slit 44p of the reinforcing member 44 and in each of the second installation slits 46p of the second reinforcing member 46. As a result, the two first reinforcing members 44 and the second reinforcing member 46 can be assembled via the two clasps 48 without using a jig for the reinforcing structure. In particular, since the tip surfaces of the four arm portions 48a of each stopper 48 are arranged on concentric circles, the two first reinforcing members 44 and the second reinforcing member 46 do not separate from each other, and the fixed state thereof is easy. Can be stabilized.

Therefore, according to the second embodiment, the assembly time of the frame structure 34 can be significantly shortened while reducing the assembly cost of the frame structure 34, as in the first embodiment described above.

The present invention is not limited to the above description of the first embodiment and the second embodiment, and can be implemented in various embodiments as follows, for example. The clasp 32 may be omitted from the configuration of the frame structure 10 according to the first embodiment, and the number of parts of the reinforcing structure 18 may be reduced. In this case, the first installation slit 22p is omitted from the configuration of the first reinforcing member 20, and the second installation slit 28p is omitted from the configuration of the second reinforcing member 26.

The scope of rights included in the present invention is not limited to the above-mentioned description of the first embodiment and the second embodiment.

10 Frame structure 12 Structure main body 14 1st main body member 16 2nd main body member 18 Reinforcing structure 20 1st reinforcing member 22 1st reinforcing piece 22s 1st insertion slit 22p 1st installation slit 22c Chapping part 24 1st adjacent Piece 24n 3rd insertion slit 26 2nd reinforcing member 28 2nd reinforcing piece 28s 2nd insertion slit 28p 2nd installation slit 30 2nd adjacent piece 30n 2nd notch 32 Clasp 32a Arm part 32d Recessed 34 Frame structure 36 Structure Main body 38 Base plate 38h Engagement hole 40 Flange 42 Reinforcement structure 44 1st reinforcement member 44s 1st insertion slit 44p 1st installation slit 46 2nd reinforcement member 46s 2nd insertion slit 46p 2nd installation slit 46b Engagement protrusion 48 Stopper 48a Arm 48d Recess

Claims (6)

The frame-shaped structure body and
It is provided with a reinforcing structure provided in a cross shape inside the structure main body to reinforce the structure main body.
The reinforcing structure is
A first installation slit provided inside the structure body, extending in a predetermined first direction, forming a first insertion slit, and passing through the end of the first insertion slit is along the predetermined first direction. With the first reinforcing member formed in
It is provided inside the structure body at right angles to the first reinforcing member, extends in a predetermined second direction orthogonal to the predetermined first direction, and inserts the first insertion slit of the first reinforcing member. A second insertion slit for the purpose is formed, a second installation slit passing through the end of the second insertion slit is formed along the predetermined second direction, and the central portion of the second installation slit is the first. A second reinforcing member corresponding to the central portion of the first installation slit of the reinforcing member, and
A frame structure comprising a clasp accommodated in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member. The frame-shaped structure body and
It is provided with a reinforcing structure provided in a cross shape inside the structure main body to reinforce the structure main body.
The reinforcing structure is
It has a flat plate-shaped first reinforcing piece and a flat plate-shaped first adjacent piece orthogonal to the first reinforcing piece, which is provided inside the structure main body and extends in a predetermined first direction. A first reinforcing member having a first insertion slit formed in one reinforcing piece and a third insertion slit formed in the first adjacent piece.
It is provided inside the structure body at right angles to the first reinforcing member, extends in a predetermined second direction orthogonal to the predetermined first direction, and forms a flat plate-shaped second reinforcing piece and the second reinforcing piece. It has a flat plate-shaped second adjacent piece that is orthogonally adjacent to each other, and a second insertion slit for inserting the first insertion slit of the first reinforcing piece is formed in the second reinforcing piece. A second notch is formed in the adjacent piece to be fitted with a part of the first adjacent piece, and a second reinforcement in which a part of the second adjacent piece is fitted with the third insertion slit of the first adjacent piece. A frame structure that comprises members. A first installation slit passing through the end of the first insertion slit is formed in the first reinforcing member along the predetermined first direction, and the second reinforcing member passes through the end of the second insertion slit. 2 The installation slit is formed along the predetermined second direction, and the central portion of the first installation slit of the first reinforcing member and the central portion of the second installation slit coincide with each other.
The frame structure according to claim 2, further comprising a clasp accommodated in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member. The tips of the portions of the clasp that are housed in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member are arranged on concentric circles. , The frame structure according to claim 1 or 3. The frame structure according to claim 4, wherein two recesses are symmetrically formed in the central portion of the clasp. A method for assembling the frame structure according to claim 1 or 3.
With the clasp placed in the first installation slit of the first reinforcing member, the first insertion slit of the first reinforcing member is inserted into the second insertion slit of the second reinforcing member. The central portion of the first installation slit of the first reinforcing member and the central portion of the second installation slit of the second reinforcing member are aligned with each other.
Next, by rotating the clasp, the clasp is accommodated in the first installation slit of the first reinforcing member and in the second installation slit of the second reinforcing member. Assemble the reinforcing member and the second reinforcing member,
After that, a method for assembling a frame structure, in which the reinforcing structure provided with the first reinforcing member and the second reinforcing member is installed in a cross shape inside the structure main body.

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