JP7415508B2 - Frame structure of the roof unit and method of assembling the roof unit - Google Patents

Description

The present invention relates to a frame structure of a roof unit and a method of assembling the roof unit.

For example, Patent Document 1 listed below discloses a technology related to a connecting tool that can horizontally hold the connected girder materials when connecting girder materials constituting a truss structure, such as the frame of a large tent.

Briefly, in this prior art, the connecting tool includes a mounting member for placing an upper chord member as a girder member, and a guide member for guiding a lower chord member as a girder member along the upper surface of the lower chord member. The upper surface of the mounting member is arranged to be inclined with respect to the horizontal plane, thereby holding the girder horizontally.

Utility Model Publication No. 06-020798

However, in this prior art, when the lower chord material (member) is horizontal and the upper chord material is inclined, when connecting the lower chord material and the upper chord material to the connecting tool, the upper chord material interferes with the connecting tool. It is difficult to connect the top chord to the fitting.

The present invention takes the above-mentioned facts into account, and aims to provide a frame structure of a roof unit and a method of assembling the roof unit, which allow easy connection of even inclined members.

In the frame structure of the roof unit according to the first aspect, a gap is formed between a tubular first member and a vertical direction perpendicular to the insertion direction into the first member, and at least the first wall portion is elastically deformed. the first wall is elastically deformed and inserted into the first member, and when inserted into the first member, the first wall restores its shape and the outer surface of the first wall becomes and a tubular second member provided with an insertion portion that contacts the inner surface of the first member.

The frame structure of the roof unit according to the first aspect includes a tubular first member and a tubular second member. The second member is provided with an insertion portion, and the insertion portion is inserted into the first member.

Here, the insertion part provided in the second member has a gap formed in the vertical direction perpendicular to the insertion direction into the first member, and this gap allows at least the first wall part of the insertion part to It is said to be elastically deformable. Therefore, the insertion section can be inserted into the first member while at least the first wall portion of the insertion section is elastically deformed (in a direction that reduces the outer shape of the insertion section).

Then, when the insertion portion is inserted into the first member, the first wall portion of the insertion portion is restored, and the outer surface of the first wall portion comes into contact with the inner surface of the first member. By fixing the insertion portion to the first member in this state, it becomes possible to connect the first member and the second member via the insertion portion.

That is, in this aspect, when the insertion portion of the second member is inserted into the first member, at least the first wall portion of the insertion portion is elastically deformed, so that the insertion portion is smoothly inserted into the first member. be able to. Further, when the insertion portion of the second member is inserted into the first member, the outer surface of the first wall of the insertion portion comes into contact with the inner surface of the first member, and in this state, the insertion portion is inserted into the first member. is fixed.

In this way, by forming the insertion part of the second member inserted into the first member to be elastically deformable, even when the first member and the second member are connected in an inclined state with respect to the horizontal plane, By elastically deforming the insertion portion of the second member, it becomes possible to easily insert and connect the insertion portion into the first member.

Note that the term "tubular" here may be defined as having a hollow interior in the first member and the second member. Therefore, the first member and the second member may have a cylindrical cross-sectional shape in addition to a rectangular cylinder having a polygonal cross-sectional shape. Furthermore, the term "orthogonal" used herein is not necessarily limited to completely orthogonal, but is a concept that includes so-called "substantially orthogonal."

In the frame structure of the roof unit according to the second aspect, in the frame structure of the roof unit according to the first aspect, the first member and the second member have a rectangular tube shape, and the gap is The notch portion is provided between the second wall portion and the first wall portion by a notch formed in a pair of second wall portions that are arranged on both sides of the wall portion and face each other.

In the frame structure of the roof unit according to the second aspect, the first member and the second member have a rectangular tube shape. Furthermore, in the insertion portion of the second member, cutouts are formed in a pair of second wall portions that are arranged on both sides of the first wall portion and face each other. In this way, by forming the notch portions in the pair of second wall portions facing each other, a gap is provided between the second wall portion and the first wall portion.

In the frame structure of the roof unit according to the third aspect, in the frame structure of the roof unit according to the second aspect, the first member and the second member are arranged to be inclined at a predetermined angle with respect to a horizontal plane. The cutout portion is tapered off at the predetermined angle with respect to the first wall portion.

In the frame structure of the roof unit according to the third aspect, the first member and the second member are arranged to be inclined at a predetermined angle with respect to the horizontal plane. Here, in the second wall portion of the insertion portion provided in the second member, the cutout portion is tapered off at a predetermined angle with respect to the first wall portion of the insertion portion.

Due to this notch, the first wall portion of the insertion portion provided in the second member is elastically deformed toward the second wall portion, but it is arranged in a state inclined at a predetermined angle with respect to the horizontal plane. When inserting the insertion portion of the second member into the first member, the first wall portion is placed approximately horizontally with the first wall portion in contact with the notch portion. be done.

For this reason, it becomes easy to insert the insertion portion of the second member into the first member, which is arranged in a state inclined at a predetermined angle with respect to the horizontal plane.

Note that the "horizontal surface" herein is not necessarily limited to a completely horizontal surface, but is a concept that includes a so-called "substantially horizontal surface."

A frame structure of a roof unit according to a fourth aspect is a frame structure of a roof unit according to any one of the first to third aspects, wherein the frame structure is fastened between the first member and the insertion portion. The bolt fastening portion is positioned so that the bolts do not interfere with each other.

In the frame structure of the roof unit according to the fourth aspect, the bolts in the bolt fastening portion fastened between the first member and the insertion portion are positioned so as not to interfere with each other. As a result, even when using a bolt having a longer dimension than a preset bolt, for example, the bolts do not interfere with each other, so the bolt can be used as is.

A method for assembling a roof unit according to a fifth aspect includes elastically deforming the insertion portion of the second member according to any one of claims 1 to 4. In the insertion step of inserting into the first member according to any one of the items, when the insertion part is inserted into the first member and the insertion part is restored, the outer surface of the first wall part of the insertion part The method includes a fastening step of fastening the first member and the insertion portion using a bolt fastening portion while in contact with an inner surface of the first member.

The roof unit assembling method according to the fifth aspect includes an insertion step and a fastening step. The insertion step is a step of elastically deforming the insertion portion of the second member and inserting it into the first member, and the fastening step is a step of elastically deforming the insertion portion of the second member and inserting the insertion portion into the first member. , the first member and the insertion portion are fastened together by the bolt fastening portion with the outer surface of the first wall portion of the insertion portion being in contact with the inner surface of the first member.

As described above, in this aspect, the first member and the second member are connected in an inclined state with respect to the horizontal plane by elastically deforming the insertion portion of the second member inserted into the first member. Also, the insertion portion can be smoothly inserted into the first member.

Furthermore, by fastening the insertion portions of the first member and the second member using the bolt fastening portion, the number of connection points between the first member and the second member is reduced compared to, for example, fixing with screws (screw driving). This improves work efficiency accordingly. Additionally, bolted connections have higher bonding strength than screwed connections.

As explained above, the frame structure of a roof unit and the method of assembling a roof unit according to the present embodiment have the excellent effect that even inclined members can be easily connected to each other.

It is an exploded perspective view showing the principal part of the male side top chord member as the second member which constitutes the frame structure of the roof unit concerning this embodiment. FIG. 2 is a perspective view showing essential parts of a female upper chord member and a male upper chord member as a first member constituting the frame structure of the roof unit according to the present embodiment. FIG. 2 is a perspective view showing a state in which a female upper chord member and a male upper chord member constituting the frame structure of the roof unit according to the present embodiment are connected. FIG. 2 is a side view showing a state in which the female upper chord member and the male upper chord member forming the frame structure of the roof unit according to the present embodiment are connected. FIG. 5 is a cross-sectional view taken along line A-A shown in FIG. 4. FIG. (A) shows a part of the truss structure in the frame structure of the roof unit according to the present embodiment, and (A) shows the state before the female upper chord member and the male upper chord member, and the female lower chord member and the male lower chord member are connected. It is a side view which shows a state, and (B) is a side view which shows the state after a female side upper chord material and a male side upper chord material, and a female side lower chord material and a male side lower chord material are connected. It is a side view which shows the main part which expanded the A part shown in FIG. 6(A). It is a side view which shows the main part which expanded the B part shown in FIG. 6(B).

Hereinafter, a building according to an embodiment of the present invention will be described using the drawings.
(Configuration of frame structure of roof unit)

First, a configuration of a frame structure of a roof unit according to an embodiment of the present invention will be described. FIG. 2 shows a perspective view of the female upper chord member (first member) 12 and the male upper chord member (second member) 14, showing the configuration of the main parts of the frame structure 10 of the roof unit according to the present embodiment. has been done.

As shown in FIG. 2, the frame structure 10 of the roof unit includes a female upper chord member 12 and a male upper chord member 14, which form part of a truss structure 11 (see FIG. 6). Square steel pipes are used for the female upper chord member 12 and the male upper chord member 14, respectively, and the male upper chord member 14 has an insertion portion at one longitudinal end 19 of the rectangular cylindrical male upper chord main body 18. 16 are provided. Via this insertion portion 16, the female upper chord member 12 and the male upper chord member 14 are connected to each other.

Here, FIG. 1 shows an exploded perspective view of the male upper chord member 14 (male upper chord main body 18 and insertion portion 16). As shown in FIG. 1, the insertion portion 16 is formed to have a cylindrical shape in accordance with the shape of the male upper chord main body 18. As shown in FIG.

For example, in this embodiment, an upper wall portion (first wall portion) 16A and a lower wall portion 16B, which are arranged vertically facing each other, and the upper wall portion 16A and the lower wall are formed by four long steel plates. Vertical wall portions (second wall portions) 16C and 16D are formed to face each other on both sides of the portion 16B.

Further, the width of the vertical walls 16C and 16D of the insertion portion 16 is formed to be larger than the width of the upper wall 16A and the lower wall 16B in accordance with the shape of the male upper chord main body 18. There is. Note that these width dimensions can be changed as appropriate according to the shape of the male upper chord main body 18.

Furthermore, in the present embodiment, the insertion portion 16 is configured to form a rectangular tube shape by four plate-shaped steel plates (upper wall portion 16A, lower wall portion 16B, vertical wall portions 16C, 16D). , but is not limited to this.

For example, although not shown, it may be configured to form a rectangular tube shape by arranging two angles facing each other that have an L-shaped cross section when cut along the vertical direction. Furthermore, the shape of the insertion portion does not necessarily have to be a rectangular tube shape, and the insertion portion may be formed of two steel plates.

On the other hand, at one end 19 in the longitudinal direction of the male upper chord main body 18, a plurality of fastening holes 20 are formed in the upper wall portion 18A, the lower wall portion 18B, and the vertical wall portions 18C and 18D, respectively. Corresponding to the fastening hole 20, a fastening hole 35 (see FIG. 2) and a weld nut are provided at one end side in the longitudinal direction of the upper wall portion 16A, the lower wall portion 16B, and the vertical wall portions 16C, 16D of the insertion portion 16, respectively. 22 are provided.

As a result, one end side in the longitudinal direction of the upper wall portion 16A, lower wall portion 16B, and vertical wall portions 16C, 16D of the insertion portion 16 is connected to the male upper chord via the bolts 24, 26, 28, 30 and the weld nut 22. The upper wall portion 18A, the lower wall portion 18B, and the vertical wall portions 18C and 18D of the main body 18 are contacted and fastened to each other.

Note that each bolt 24, 26, 28, 30 is positioned in advance so that the bolts 24, 26, 28, 30 do not interfere with each other on the locus of movement. For example, in the vertical wall portions 18C and 18D of the male upper chord main body 18, the positions of the fastening holes 20 are arranged in a so-called staggered manner along the longitudinal direction of the male upper chord main body 18, and the positions of the fastening holes 20 are arranged in a side view. I try not to overlap.

As shown in FIG. 2, one end side in the longitudinal direction of the upper wall part 16A, the lower wall part 16B, and the vertical wall parts 16C, 16D of the insertion part 16 is connected to the upper wall part 18A, the lower part of the male upper chord main body 18. The upper wall 16A, the lower wall 16B and the vertical wall are fastened to the wall 18B and the vertical walls 18C and 18D via bolts 24, 26, 28, 30 and weld nuts 22, respectively. 16C and 16D are integrated with the male upper chord body 18 as the insertion portion 16.

In this way, when the insertion section 16 is integrated with the male upper chord main body 18, the upper wall section 16A, the lower wall section 16B, and the vertical wall sections 16C and 16D of the insertion section 16 are in a cantilevered state. The other ends of the upper wall portion 16A, the lower wall portion 16B, and the vertical wall portions 16C and 16D in the longitudinal direction are each elastically deformable.

Here, on the other longitudinal end side of the vertical wall portions 16C and 16D of the insertion portion 16, there is a space between the vertical wall portions 16C and 16D of the insertion portion 16 and the upper wall portion 16A of the insertion portion 16. A gap S is provided along a substantially vertical direction (up and down direction perpendicular to the direction of insertion into the female upper chord member 12 (direction of arrow A)).

To explain this gap S specifically, in the present embodiment, the vertical wall portions 16C and 16D of the insertion portion 16 have a gap extending downward toward the tip of the vertical wall portions 16C and 16D at the other end in the longitudinal direction. Taper portions (cutout portions) 32 that are inclined are formed respectively.

In this way, by forming the tapered portions 32 on the other end sides in the longitudinal direction of the vertical wall portions 16C and 16D of the insertion portion 16, the vertical wall portions 16C and 16D of the insertion portion 16 and the insertion portion 16 A gap S is provided between the upper wall portion 16A and the upper wall portion 16A. By providing this gap S, the upper wall portion 16A of the insertion portion 16 is allowed to elastically deform toward the lower wall portion 16B until movement is restricted due to interference with the vertical wall portions 16C and 16D. That will happen.

By the way, as shown in FIG. 7, the female upper chord member 12 and the male upper chord member 14 are part of the frame structure 10 of the roof unit, and are arranged so as to be inclined at a predetermined angle θ with respect to the horizontal plane P. be done. Therefore, the tapered portion 32 is cut off so as to have the predetermined angle θ with respect to the horizontal plane P.

In this embodiment, as shown in FIG. It is only necessary to provide a gap S between the wall portions 16C, 16D and the upper wall portion 16A to allow elastic deformation of the upper wall portion 16A. Therefore, the notch does not necessarily need to be tapered.

On the other hand, in this embodiment, a plurality of fastening holes 34 are formed in the upper wall portion 12A, the lower wall portion 12B, and the vertical wall portions 12C and 12D at one end 13 in the longitudinal direction of the female upper chord member 12. Corresponding to the fastening hole 34, as shown in FIGS. 1 and 2, on the other longitudinal end side of the upper wall portion 16A, lower wall portion 16B, and vertical wall portions 16C and 16D of the insertion portion 16, A fastening hole 35 and a weld nut 36 are provided respectively.

Here, FIG. 3 is a perspective view showing a state in which the female upper chord member 12 and the male upper chord member 14 are connected. As shown in FIG. 3, when the insertion portion 16 is inserted into the female upper chord member 12, the upper wall portion 12A and the lower wall portion of the female upper chord member 12 are shown in FIGS. 12B and vertical wall portions 12C, 12D, the upper wall portion 16A, lower wall portion 16B, and vertical wall portions 16C, 16D of the insertion portion 16 are in contact with, respectively, the bolts 38, 40, 42, 44 and the weld nut 36. (bolt fastening portions 45).

In this way, the upper wall 16A, the lower wall 16B, and the vertical walls 16C, 16D of the insertion section 16 are connected to the upper wall 12A, the lower wall 12B, and the vertical walls 12C, 12D of the female upper chord member 12. By tightening them, the female upper chord member 12 and the male upper chord member 14 are connected via the insertion portion 16.

Note that, as shown in FIGS. 4 and 5, the bolts 38, 40, 42, and 44 are positioned in advance on their movement loci so as not to interfere with each other. That is, similarly to the vertical wall portions 18C and 18D of the male upper chord main body 18, in the vertical wall portions 12C and 12D of the female upper chord 12, the position of the fastening hole 34 is determined along the longitudinal direction of the female upper chord 12. They are arranged in a so-called zigzag pattern so that the positions of the fastening holes 34 do not overlap when viewed from the side. Here, FIG. 4 is a side view showing a state in which the female upper chord member 12 and the male upper chord member 14 are connected, and FIG. 5 is a side view when cut along the A-A line shown in FIG. FIG.

(Functions and effects of the frame structure of the roof unit)
Next, the functions and effects of the frame structure of the roof unit according to one embodiment of the present invention will be explained.

FIGS. 6A and 6B show a female upper chord member 12, a male upper chord member 14, and a female lower chord member, which form part of the truss structure 11 in the frame structure 10 of the roof unit according to the present embodiment. 46 and a side view showing the male lower chord member 48.

FIG. 6(A) shows the state before the female upper chord member 12 and male upper chord member 14 and the female lower chord member 46 and male lower chord member 48 are connected, and FIG. 6(B) shows the state after the female upper chord member 12 and the male upper chord member 14 and the female lower chord member 46 and the male lower chord member 48 are connected.

FIG. 7 shows an enlarged main part of section A shown in FIG. 6(A), and FIG. 8 shows an enlarged main part of section B shown in FIG. 6(B). Note that, in FIG. 8, illustration of the diagonal member 50 that bridges the female upper chord member 12 and the male lower chord member 48 shown in FIG. 6(B) is omitted.

Moreover, in FIGS. 6A and 6B, the female upper chord member 12 and the female lower chord member 46 side move relative to the male upper chord member 14 and the male lower chord member 48 side. In this embodiment, the female upper chord member 12 and the female lower chord member 46 and the male upper chord member 14 and the male lower chord member 48 are movable relative to each other.

Therefore, depending on the working method, the male upper chord 14 and male lower chord 48 may be moved relative to the female upper chord 12 and female lower chord 46, or the male upper chord 14 may be moved. The female upper chord member 12 and the female lower chord member 46 may also be moved relative to the male lower chord member 48 side.

In the following explanation, as shown in FIG. 7, the male upper chord 14 and male lower chord 48 side are moved relative to the female upper chord 12 and female lower chord 46 side. .

In this embodiment, the female lower chord member 46 has substantially the same configuration as the female upper chord member 12, and the male lower chord member 48 has substantially the same configuration as the male upper chord member 14. However, in this embodiment, the female lower chord member 46 and the male lower chord member 48 are arranged along the substantially horizontal plane P, and the female upper chord member 12 and the male upper chord member 14 are arranged along the substantially horizontal plane P. It is arranged in an inclined state at an angle θ.

Further, in this embodiment, the male upper chord member 14 and the male lower chord member 48 are provided with the insertion portions 16, respectively, and the insertion portions 16 are inserted into the female upper chord member 12 and the female lower chord member 46, respectively. inserted (insertion process).

As shown in FIG. 8, the insertion portions 16 of the male upper chord member 14 and the male lower chord member 48 are inserted into the female upper chord member 12 and the female lower chord member 46, respectively. 16 are fixed to the female upper chord member 12 and the female lower chord member 46, respectively. As a result, the female upper chord member 12 and the male upper chord member 14, and the female lower chord member 46 and the male lower chord member 48 are connected, respectively.

Here, as shown in FIG. 7, in this embodiment, the insertion portions 16 of the male upper chord member 14 and the male lower chord member 48 have tapered portions 32 formed in the vertical wall portions 16C and 16D, respectively. A gap S is provided in the vertical direction between the upper wall portion 16A and the vertical wall portions 16C and 16D. This gap S allows the upper wall portion 16A of the insertion portion 16 to be elastically deformed toward the lower wall portion 16B as shown by the two-dot chain line until it interferes with the vertical wall portions 16C and 16D.

Therefore, in this embodiment, the insertion portion 16 can be smoothly inserted into the female upper chord member 12 and the female lower chord member 46, respectively, with the upper wall portion 16A of the insertion portion 16 being elastically deformed. As shown in FIG. 8, when the insertion portion 16 is inserted into the female upper chord member 12 and the female lower chord member 46, the upper wall portion 16A is restored, and the outer surface 16A1 of the upper wall portion 16A is restored. contacts the inner surface 12A1 of the upper wall portion 12A of the female upper chord member 12 and the inner surface 46A1 of the upper wall portion 46A of the female upper chord member 46, respectively.

In this state, as shown in FIGS. 4 and 8, the female upper chord member 12 and the female lower chord member 46 are connected to the insertion portion via the bolts 38, 40, 42, 44 and the weld nut 36 (see FIG. 16 is fastened (fixed) (fastening process). Thereby, the female upper chord member 12 and the male upper chord member 14 and the female upper chord member 46 and the male upper chord member 48 are connected via the insertion portion 16, respectively.

That is, in this embodiment, as shown in FIG. 7, the insertion portion 16 of the male upper chord member 14 is inserted into the female upper chord member 12 which is arranged at a predetermined angle θ with respect to the substantially horizontal plane P. When inserted, the upper wall portion 16A of the insertion portion 16 is elastically deformed, so that the insertion portion 16 can be smoothly inserted into the female upper chord member 12.

In other words, in this embodiment, by forming the insertion portion 16 of the male upper chord 14 to be inserted into the female upper chord 12 to be elastically deformable, especially the female upper chord 12 and the male upper chord 14 can be substantially Even when connected in an inclined state with respect to the horizontal plane P, by elastically deforming the insertion portion 16 of the male upper chord member 14, the insertion portion 16 can be smoothly inserted into the female upper chord member 12. be able to.

Therefore, in this embodiment, the female lower chord member 46 and the male lower chord member 48 are arranged along the substantially horizontal plane P, and the female upper chord member 12 and the male upper chord member 14 are arranged at a predetermined angle with respect to the substantially horizontal plane P. Even if the truss structure 11 is installed in an inclined state at an angle θ, it is possible to easily connect the female upper chord member 12 and the male upper chord member 14.

In this embodiment, the male upper chord member 14 and the male lower chord member 48 are in a state in which a part of the elastically deformable insertion portion 16 is inserted into the male upper chord member 14 and the male lower chord member 48. are fixed to the male upper chord member 14 and the male lower chord member 48, respectively. However, unlike the male upper chord member 14, the male lower chord member 48 is connected to the female lower chord member 46 which is arranged along the substantially horizontal plane P. Therefore, on the male lower chord member 48 side, the insertion portion 16 does not necessarily need to be elastically deformable. Therefore, on the male lower chord member 48 side, in place of the insertion portion 16, although not shown, a rectangular tube member without a notch is used to connect the male lower chord member 48 and the female lower chord member 46. It may also be used as a member.

In this embodiment, as shown in FIGS. 7 and 8, when the insertion portion 16 of the male upper chord member 14 is inserted into the female upper chord member 12, the upper wall portion 16A of the insertion portion 16 The outer surface 16A1 contacts the inner surface 12A1 of the upper wall portion 12A of the female upper chord member 12, and in this state, the insertion portion 16 is fixed to the female upper chord member 12.

In this way, by fixing both with the outer surface 16A1 of the upper wall 16A of the insertion portion 16 in contact with the inner surface 12A1 of the upper wall 12A of the female upper chord 12, the male upper chord 14 can be inserted. It becomes possible to improve the contact strength between the portion 16 and the female upper chord member 12. Note that substantially the same effect can be obtained on the female lower chord 46 and male lower chord 48 sides as on the female upper chord 12 and male upper chord 14 sides.

Further, in this embodiment, the female upper chord member 12 and the male upper chord member 14 are arranged in a state of being inclined at a predetermined angle θ with respect to the substantially horizontal plane P. Here, in the vertical wall portions 16C and 16D of the insertion portion 16 provided in the male upper chord member 14, the tapered portion 32 is tapered at a predetermined angle θ with respect to the upper wall portion 16A of the insertion portion 16. has been cut off.

Due to this tapered portion 32, the upper wall portion 16A of the insertion portion 16 provided in the male upper chord member 14 is elastically deformed toward the vertical wall portions 16C and 16D, but at a predetermined angle with respect to the horizontal plane P. When inserting the insertion portion 16 of the male upper chord member 14 into the female upper chord member 12 which is arranged in an inclined state at an angle of θ, the upper wall portion 16A comes into contact with the tapered portion 32. In the state where they are in contact with each other, the upper wall portion 16A is arranged substantially horizontally.

In this way, when inserting the insertion portion 16 of the male upper chord member 14 into the female upper chord member 12 which is arranged at a predetermined angle θ with respect to the horizontal plane P, the upper wall of the insertion portion 16 By arranging the portion 16A substantially horizontally, the insertion portion 16 of the male upper chord member 14 can be further easily inserted into the female upper chord member 12.

As shown in FIGS. 3 and 4, with the insertion portion 16 inserted into the female upper chord member 12, the upper wall portion 12A, the lower wall portion 12B, and the vertical wall portion 12C of the female upper chord member 12 are inserted. , 12D, the upper wall portion 16A, lower wall portion 16B, and vertical wall portions 16C, 16D of the insertion portion 16 of the male upper chord member 14 are in contact with the bolts 38, 40, 42, 44 and the weld nut 36, respectively. The female upper chord member 12 and the male upper chord member 14 (insertion portion 16) are respectively fastened through the female upper chord member 12 and the male upper chord member 14 (insertion portion 16).

In this way, in this embodiment, for example, by fastening the female upper chord member 12 and the male upper chord member 14 by the bolt fastening portion 45 via the bolts 38, 40, 42, 44 and the weld nut 36, for example, Although not shown, compared to fixing with screws (screw driving), the number of joints (fastening) points between the female upper chord member 12 and the male upper chord member 14 can be reduced, and work efficiency is improved accordingly. do. Additionally, bolting provides a higher bonding strength than screwing. Note that substantially the same effect can be obtained on the female lower chord 46 and male lower chord 48 sides as on the female upper chord 12 and male upper chord 14 sides.

Furthermore, in this embodiment, the bolts 38, 40, 42, and 44 are positioned in advance on their movement loci so as not to interfere with each other, as shown in FIG. As a result, even if the worker uses a bolt with a longer dimension than a preset bolt, for example, the bolts do not interfere with each other, so the bolt can be used as is.

On the other hand, in this embodiment, as shown in FIG. 1, the insertion portion 16 has an upper wall portion 16A, a lower wall portion 16B, and vertical wall portions 16C and 16D formed of four long steel plates. ing. By configuring the insertion portion 16 with four steel plates in this manner, it is possible to accommodate male upper chord main bodies 18 of different sizes. Therefore, in this embodiment, costs can be reduced compared to the case where an insertion section is provided for each size of the male upper chord main body 18.

Although the present invention has been described above using one embodiment as one mode for carrying out the present invention, the present invention is not limited to such one embodiment in any way, and the above-described embodiments may be used within the scope of the gist of the present invention. Various modifications and substitutions can be made to the embodiment described above.

10 Frame structure of roof unit 12 Female upper chord member (first member)
12A1 Inner surface (inner surface of the first member)
14 Male upper chord member (second member)
16 Insertion part 16A1 Outer surface (outer surface of first wall)
16A Upper wall part (first wall part)
16C Vertical wall part (second wall part)
16D Vertical wall part (second wall part)
18 Male upper chord main body (second member)
32 Tapered part (notch part)
38 Bolt 40 Bolt 42 Bolt 44 Bolt 45 Bolt fastening section 46 Female lower chord member (first member)
48 Male lower chord member (second member)
θ angle (predetermined angle)
P Horizontal surface S Gap

Claims (3)

A frame structure of a roof unit,
a tubular first member;
A gap is formed in the vertical direction perpendicular to the insertion direction into the first member, so that at least the first wall portion can be elastically deformed, and the first wall portion is elastically deformed and inserted into the first member. a tubular second member provided with an insertion portion that is inserted into the first member, the first wall restores its original shape, and the outer surface of the first wall contacts the inner surface of the first member; ,
Equipped with
The first member and the second member have a rectangular tube shape,
The gap is provided between the second wall part and the first wall part by a notch formed in a pair of second wall parts facing each other and arranged on both sides of the first wall part,
The first member and the second member are arranged to be inclined at a predetermined angle with respect to a horizontal plane,
In the frame structure of the roof unit , the cutout portion is tapered off at the predetermined angle with respect to the first wall portion . The frame structure of a roof unit according to claim 1 , further comprising a bolt fastening portion positioned so that bolts fastened between the first member and the insertion portion do not interfere with each other . an insertion step of elastically deforming the insertion portion of the second member according to claim 1 or 2 and inserting it into the first member according to claim 1 or 2;
When the insertion portion is inserted into the first member and the insertion portion is restored, the first member and the insertion portion are connected to each other by the bolt fastening portion with the outer surface of the first wall portion in contact with the inner surface of the first member. a fastening step of fastening the parts;
A method of assembling a roof unit with