JP2022043466A - Aluminum joint structure - Google Patents

Abstract

To provide a strong aluminum joint structure that enhances strength by pressure-welding the joints where aluminum ingots are inserted into the hollow of the aluminum profile with bolts from the outside without complicated processing on aluminum profiles and aluminum ingots.SOLUTION: At the joint portion of an aluminum profile 2, the longitudinal cross section of the aluminum profile 2 is formed hollow, and one or more groove portions 25a and 25b along the longitudinal direction are formed on the outer peripheral portion. An aluminum ingot 3 having a cross-sectional shape that can be inserted into the hollow of the aluminum profile 2 is inserted into the hollow of the aluminum profile 2. Notches 33a and 33b for fitting one or more first bolts 22a and 22b corresponding to the positions of the groove portions 25a and 25b are formed in the side surface width direction of the aluminum ingot 3. The aluminum ingot 3 is press-welded with the first bolts 22a and 22b at the groove portions 25a and 25b on the outer side of the aluminum profile 2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a joining structure for joining aluminum profiles with bolts.

Aluminum profiles are often used as constituents of temporary housing because they are lightweight and have relatively high strength. On the other hand, for example, for building structures such as mobile toilets that are usually permanently installed in parks and can be moved immediately to the disaster area in the event of a disaster, they have high strength as a building structure. It is necessary to realize weight reduction suitable for movement at the same time. In order to secure the strength of a building structure with an aluminum mold material, when joining the aluminum mold material, it is necessary to tighten it with a bolt or the like penetrating the aluminum mold material and perform pressure welding. However, since the aluminum profile itself has a low hardness, it is deformed when tightened with a bolt or the like, and there is a problem that it cannot be firmly joined.

In relation to the above problems, for example, the techniques shown in Patent Documents 1 and 2 are disclosed. The technique shown in Patent Document 1 is a joint member in which a sawtooth-shaped unevenness is provided so as to cut in the axial direction on the hollow inner surface of the hollow inner surface of the hollow cross section, and the unevenness that meshes with the unevenness is formed on the outer surface. It is inserted into the hollow inside of the aluminum mold material, and has a crimping means for crimping the hollow inner surface of the aluminum mold material and the outer surface of the joint member, and a slit extending in the axial direction from the open end of the aluminum mold material.

Further, in the technique shown in Patent Document 2, in the reinforcing structure of the bolt joint joint of the H-shaped steel, the steel plates are arranged on both sides of the web of the H-shaped steel at intervals, and the steel plates are arranged over each H-shaped steel. A steel rod provided in the through hole in the web of the steel plate and each H-shaped steel and having a male threaded portion at the end is inserted into the through hole, and a nut is screwed into the male threaded portion at the end of each steel rod. A curable filler is filled and solidified in the space between the H-shaped steel and each of the steel plates, and tension is applied to the steel rod by tightening the nut, and the solidified curable filler is used with each of the steel plates. It is sandwiched between the webs of the H-shaped steel so as to be pressed.

Japanese Unexamined Patent Publication No. 2010-275771 Japanese Unexamined Patent Publication No. 2010-19072

However, in the technique according to Patent Document 1, it is necessary to make a slit in the aluminum mold material and to provide a connecting member on the joint member side in order to align the aluminum mold material and the joint member, which is complicated and time-consuming. It has the problem of closing.

The technique according to Patent Document 2 relates to the reinforcement of a steel material and is different from the reinforcement of an aluminum mold material. In addition, since it is reinforced by filling the space of the steel sheet with a curable filler, it is difficult to perform reinforcement work at the same time as the on-site assembly work, and the work is a curable filler. It has a problem that it depends on the curing state of.

In the present invention, the strength is increased by pressure-welding the joints where the aluminum ingots are inserted into the hollow inside of the aluminum mold material with bolts from the outside, and the aluminum mold material and the aluminum ingots are made of strong aluminum without complicated processing. Provides a joining structure.

In the aluminum joining structure according to the present invention, the longitudinal cross section of the aluminum profile is formed hollow at the joining portion of the aluminum profile, and one or more grooves along the longitudinal direction are formed on the outer peripheral portion. , An aluminum ingot having a cross-sectional shape that can be inserted into the hollow of the aluminum profile is inserted, and one or a plurality of first bolts corresponding to the positions of the grooves are fitted in the side width direction of the aluminum ingot. A notch is formed, and the aluminum ingot is pressure-welded with the first bolt in the groove on the outside of the aluminum profile.

As described above, in the aluminum joining structure according to the present invention, the longitudinal cross section of the aluminum profile is formed hollow at the joining portion of the aluminum profile, and one or a plurality of grooves along the longitudinal direction are formed on the outer peripheral portion. Is formed, and an aluminum ingot having a cross-sectional shape that can be inserted into the hollow of the aluminum profile is inserted, and one or a plurality of first bolts corresponding to the positions of the grooves in the side width direction of the aluminum ingot. A notch is formed to fit the aluminum profile, and the aluminum ingot is pressure-welded with the first bolt in the groove on the outside of the aluminum profile, so that the aluminum profile and the aluminum ingot are not complicatedly processed. , It has the effect that the joint part of the aluminum profile can be firmly tightened with bolts without worrying about deformation to improve the strength to each stage.

It is a perspective view which shows the state before assembly of the aluminum joint structure which concerns on 1st Embodiment. It is a perspective view which shows the state after assembly of the aluminum joint structure which concerns on 1st Embodiment. It is sectional drawing at the time of assembling the aluminum joint structure which concerns on 1st Embodiment. It is a figure which shows the aluminum joint structure in the case of expansion in the aluminum joint structure which concerns on 1st Embodiment. It is a 1st figure which shows the aluminum joint structure which concerns on 2nd Embodiment. It is the 2nd figure which shows the aluminum joint structure which concerns on 2nd Embodiment. It is a 3rd figure which shows the aluminum joint structure which concerns on 2nd Embodiment. It is a figure which shows the fixing member in the aluminum joining structure which concerns on 2nd Embodiment, and the joining structure using the fixing member. It is a 1st figure which shows the aluminum joint structure which concerns on 3rd Embodiment. It is the 2nd figure which shows the aluminum joint structure which concerns on 3rd Embodiment. It is a 3rd figure which shows the aluminum joint structure which concerns on 3rd Embodiment. It is a figure which shows the structure of the L-shaped angle in the aluminum joint structure which concerns on other embodiment. It is a figure which shows the state before joining in the case of joining the 1st joining member and the 2nd joining member in a T shape in the aluminum joining structure which concerns on other embodiment. It is a figure which shows the structure of the L-shaped angle in the state before joining in the case where the 1st joining member and the 2nd joining member are joined in a T shape in the aluminum joining structure which concerns on other embodiments.

(First Embodiment of the present invention)
The aluminum joint structure according to the present embodiment will be described with reference to FIGS. 1 to 4. In the aluminum joint structure according to the present embodiment, the cross section in the longitudinal direction of the aluminum mold material is formed hollow, and one or more grooves along the longitudinal direction are formed in the outer peripheral portion, and the aluminum mold material can be inserted into the hollow inside. An aluminum ingot having a different cross-sectional shape is inserted, and a notch for fitting one or more first bolts corresponding to the position of the groove in the side width direction of the aluminum ingot is formed, and the aluminum profile is formed. The aluminum ingot is pressure-welded with the first bolt in the groove on the outer side of the.

FIG. 1 is a perspective view showing a state before assembly of the aluminum joint structure according to the present embodiment, FIG. 2 is a perspective view showing a state after assembly of the aluminum joint structure according to the present embodiment, and FIG. 3 is the present embodiment. It is sectional drawing at the time of assembling the aluminum joint structure which concerns on a form. 3A is a cross-sectional view taken along the line a in FIG. 2, and FIG. 3B is a cross-sectional view taken along the line b in FIG.

The aluminum joint structure 1 has a long aluminum profile 2 having a hollow cross section and a rectangular aluminum ingot 3 inserted into the hollow cross section, and the aluminum ingot 3 is formed in the aluminum profile 2. In the inserted state, the aluminum mold material 2 and the aluminum ingot 3 are pressed and fixed by bolts from the outside of the aluminum mold material 2. The shape of the cross section 21 (the shape having convex portions on each side of the rectangular shape) which is the longitudinal cross section of the aluminum profile 2 has a shape including the shape of the cross section 31 (rectangular shape) of the aluminum ingot 3. The length of each side of the rectangle of the cross section 31 is slightly longer than each side of the rectangle of the cross section 21 of the cross section 31 so that the aluminum ingot 3 can be smoothly inserted into the hollow of the aluminum mold material 2. It has become.

One side surface 32a of the aluminum ingot 3 is formed with a notch 33a for fitting one or more (one in FIG. 1) first bolts 22a communicating in the width direction thereof. Further, the other side surface 32b facing the one side surface 32a is also formed with a notch 33b for fitting one or more (one in FIG. 1) first bolts 22b communicating in the width direction thereof. The separation distances of the cutout portions 33a and 33b are formed at distances corresponding to the groove portions 25a and 25b along the longitudinal direction formed in the outer peripheral portion of the aluminum mold member 2 when inserted into the aluminum mold member 2. There is. On the other hand, in the groove portions 25a and 25b formed in the outer peripheral portion of the aluminum mold member 2, bolt holes 24 for inserting the first bolts 22a and 22b are formed in order to fix the aluminum ingot 3 at a predetermined position. Has been done. When the aluminum ingot 3 is inserted to a predetermined position, the position of the bolt hole 24 and the position of the notches 33a and 33b match, and the first bolts 22a and 22b are inserted and tightened to fit the aluminum ingot 3 into the notch portions 33a and 33b. It can be fixed by pressure welding. The first bolts 22a and 22b may be directly tightened from the outside of the aluminum profile 2 with a general nut 23, or the fixing member 80 having a cross section similar to that of the groove portions 25a and 25b and functioning as a nut (this). The fixing member 80 may be tightened with (details will be described later).

In this way, by tightening the aluminum profile 2 from both sides of the outer periphery of the aluminum profile 2 facing each other with the first bolts 22a and 22b via the aluminum ingot 3, the aluminum profile 2 is deformed by tightening each bolt. It can be firmly tightened without any trouble, and the contact area between the outer surface of the aluminum ingot 3 and the inner surface of the aluminum profile 2 can be increased to further improve the strength of the portion.

In the above description, the aluminum ingot 3 has two notches 33a and 33b, and is fastened with two first bolts 22a and 22b so as to correspond to the respective notches 33a and 33b. The number of each of the notch 33 and the first bolt 22 is not limited to two, and may be one or more. Further, the number of notch portions 33 and the number of first bolts 22 do not necessarily have to match, and the relationship may be (number of notch portions 33)> (number of first bolts 22). However, in this case, it is necessary that the position of the bolt hole 24 of the first bolt 22 always corresponds to any position of the notch 33.

Further, by joining two aluminum mold members 2 to one aluminum ingot 3, it may be possible to easily add to the existing aluminum joining structure. That is, for example, as shown in FIG. 4, the first aluminum mold member 2a is fitted to one longitudinal end portion 35a side of the aluminum ingot 3, and the second aluminum mold member 2b is fitted to the other longitudinal direction end portion 35b side. The first aluminum mold member 2a is fixed by being pressed by the first bolts 22a and 22b at the positions of the first notches 33a and 33b formed in the aluminum ingot 3 and fixed to the second aluminum. The mold material 2b is pressed and fixed by the second bolts 22c and 22d at the positions of the second notches 33c and 33d formed in the aluminum ingot 3. As described above, it is possible to strengthen the fixing of the first aluminum mold material 2a and the aluminum ingot 3 and the fixing of the second aluminum mold material 2b and the aluminum ingot 3. At the same time, since the first aluminum mold material 2a and the second aluminum mold material 2b are also firmly joined via the aluminum ingot 3, it is possible to eliminate the problem that the joining strength is weakened between the existing portion and the extension portion. can.

(Second Embodiment of the present invention)
The aluminum joint structure according to the present embodiment will be described with reference to FIGS. 5 to 8. In the aluminum joint structure according to the present embodiment, the two aluminum joint members are brought into contact with each other in a T-shape or an L-shape at a position where the aluminum ingot of the aluminum joint structure described in the first embodiment is fixed. It is bolted via an L-shaped angle. In this embodiment, the description overlapping with the first embodiment will be omitted.

FIG. 5 is a cross-sectional view of the aluminum joint structure according to the present embodiment. In FIG. 5, in the aluminum joining structure 1, the first joining member 4a formed by inserting the first aluminum ingot 3a into the first aluminum mold member 2a and fixing the first aluminum ingot 3a to the joining portion, and the second aluminum mold member A second aluminum ingot 3b is inserted into 2b, and a second joining member 4b formed by fixing the respective ends at a aligned position is provided, and the first joining member 4a and the second joining member 4a are joined. The member 4b is formed by being joined in an L shape via an L-shaped angle 5.

As in the case of the first embodiment, the first joining member 4a is formed by inserting the first aluminum ingot 3a into the first aluminum profile 2a and forming the first aluminum ingot 3a. The first bolts 22a and 22b are formed by tightening the first bolts 22a and 22b in a state where the first bolts 22a and 22b are fitted into the notches 33a and 33b. At this time, the first bolts 22a and 22b are inserted into the opposite longitudinal side surfaces (upper side surface and lower side surface in FIG. 5) of the first aluminum profile 2a, but one side surface (in FIG. 5). Is inserted from the outside of the L-shaped angle 5 and tightened on the lower side surface) to fix the L-shaped angle 5 to the first aluminum mold member 2a.

Regarding the second joining member 4b, the second aluminum ingot 3b is inserted into the second aluminum mold member 2b, and the second bolt 22c, the second bolt 22c, is formed in the notches 33c and 33d formed in the second aluminum ingot 3b. The second bolts 22c and 22d are tightened and formed with the 22d fitted. At this time, the second bolts 22c and 22d are inserted into the opposite longitudinal side surfaces (the left side surface and the right side side surface in FIG. 5) of the second aluminum profile 2b, but the L-shaped angle 5 is mounted. On one side surface (the left side surface in FIG. 5), the L-shaped angle 5 is fixed to the second aluminum mold member 2b by inserting and tightening the L-shaped angle 5 from the outside.

In this way, the side surface of the portion where the first aluminum ingot 3a of the first joining member 4a is fixed and the end surface 35 of the second aluminum ingot 3b of the second joining member 4b are L-shaped angles. It is possible to improve the joining strength of each joining member to each stage by closely adhering to each other in an L shape at No. 5 and firmly fixing by pressure contact from the outside.

In addition, in FIG. 5, the configuration in which the first joining member 4a and the second joining member 4b are joined in an L shape is shown. You may. In this case, as shown in FIG. 6, the L-shaped angles 5a and 5b are used, and the L-shaped angles 5a, individually with respect to the two right-angled portions where the first joining member 4a and the second joining member 4b intersect. It is joined at 5b.

Further, regarding the joining between the L-shaped angle 5 and the first joining member 4a and the joining between the L-shaped angle 5 and the second joining member 4b, in the case of FIG. 5, two bolts (first joining member) are used. For 4a, the first bolts 22a and 22b (the first bolt 22b is arranged behind the first bolt 22a in FIG. 5), and for the second joining member 4b, the second bolts 22c and 22d (the second bolt in FIG. 5). 22d has a structure to be joined by (arranged on the back side of the second bolt 22c))). For example, as shown in FIG. 7, a structure in which each of the first joining members 4a and 4b is joined by four bolts. It may be.

That is, in FIG. 7A, for the first joining member 4a, the first aluminum ingot 2a is fastened and joined with the four bolts of the first bolts 22a, 22b, 22e, and 22f, and the second joining is performed. The member 4b may have a structure in which the second aluminum ingot 2b is fastened and joined with four bolts of the second bolts 22c, 22d, 22g, and 22h. On the other hand, in FIG. 7B, regarding the joining between the first joining member 4a arranged in the horizontal direction and the L-shaped angle 5, two of the four bolts, the first bolts 22a and 22b, are the second. While being tightened via the aluminum ingot 3a of 1, the two first bolts 22e and 22f are not inserted into the first aluminum ingot 3a, and the first aluminum mold member 2a and the L-shaped angle 5 are directly connected to each other. It has a structure to join. Further, regarding the joining of the second joining member 4b arranged in the vertical direction and the L-shaped angle 5, all four bolts are joined via the second aluminum ingot 3b.

With such a structure, for example, when suspending from above as described later in the third embodiment, it is possible to strengthen the joint in the vertical direction in which the load is particularly large, and it is safe in transportation work and the like. Can be guaranteed. Further, since the notch for inserting the first bolts 22e and 22f is not required, the structure of the first aluminum ingot 2a can be simplified.

Here, for the nut 23 to be fitted to each bolt, it is desirable to prepare, for example, a fixing member 80 (first-in nut) as shown in FIG. 8 (A). The cross section of the fixing member 80 in the insertion direction has the same shape as the longitudinal cross section of the grooves 25a and 25b, but has a slightly smaller size. Therefore, it is possible to slide and insert into the grooves 25a and 25b, and the edges of the grooves 25a and 25b and the edges of the fixing member 80 interfere with each other in directions other than the insertion direction, so that the movement is impossible. It has become. A hole 81 that can be fastened with a bolt is opened in a direction perpendicular to the slide direction to be inserted into the grooves 25a and 25b, so that the L-shaped angle 5 can be sandwiched and fixed. FIG. 8B is an arrow view when viewed from the arrow c of FIG. 7B. The fixing member 80 is previously inserted into the groove portions 25a and 25b as a first-insertion nut, and bolts are sandwiched between L-shaped angles. Each member can be joined by fastening with.

The bolt hole of the L-shaped angle 5 may be formed in an elliptical shape having a major axis in the longitudinal direction so that the bolt can move in the vertical direction and the horizontal direction when the bolt is temporarily fixed.

(Third Embodiment of the present invention)
The aluminum joint structure according to the present embodiment will be described with reference to FIGS. 9 to 10. The aluminum joint structure according to the present embodiment includes a suspension member for transportation in the aluminum joint structure described in the second embodiment. In this embodiment, the description overlapping with each of the above embodiments will be omitted.

9 is a front view and a side view of the aluminum joint structure according to the present embodiment based on the aluminum joint structure of FIG. 7. 9 (A) is a front view, and FIG. 9 (B) is a side view (arrow view seen from arrow c in FIG. 7 (B)). In FIGS. 9A and 9B, the aluminum joining structure of FIG. 7 in the second embodiment is different from the second joining member 4b in the first joining member 4a arranged in the horizontal direction. The hanging member 90 is joined to the longitudinal side surface (that is, the upper side of the first joining member 4a in FIG. 9) at a position facing the position where the is joined. The hanging member 90 is a member for lifting a skeleton having an aluminum joint structure 1 or a structure when transporting the structure. For example, when the four corners of the ceiling surface are formed of the aluminum joint structure 1, the four corners thereof. It is used when a hook is hooked on the hanging member 90 and lifted by a crane. That is, a large load is applied to the suspending member 90 in the vertical direction or the vertical diagonal direction depending on how the crane lifts the member 90. Therefore, the hanging member 90 needs to be firmly joined by the aluminum joining structure 1 to such an extent that the weight of the skeleton or the structure can be sufficiently supported.

As shown in FIG. 9, the hanging member 90 is joined to the first joining member 4a, and the joining method thereof is to directly join the first aluminum mold member 2a and the hanging member 90 via the fixing member 80. is doing. On the other hand, as shown in FIG. 10, the first bolts 22e and 22f may be joined so as to penetrate the first aluminum ingot 3a and the L-shaped angle 5. As in the case of FIG. 10, it is possible to join the hanging member 90 more firmly to the first joining member 4a by joining through the first aluminum ingot 3a, but the weight of the skeleton and the structure is heavy. If it is not large, as shown in FIG. 9, the first aluminum mold member 2a and the suspending member 90 are directly connected (via the fixing member 80) to the first bolts 22e and 22f without penetrating the first aluminum ingot 3a. It may be joined with.

Further, as shown in FIG. 11, the L-shaped angle 5 may be arranged on the side in the direction in which the horizontal suspension stress is strongly applied (the direction in which the horizontal stress vector is large). For example, in the case of FIG. 11, assuming that the hanging stress is applied particularly strongly in the upward direction and the left direction, it is desirable to join so that the L-shaped angle 5 is arranged on the left side of the hanging member 90. As shown in FIG. 6, when the aluminum joining structure 1 is joined in a T shape, a stronger joining is possible by arranging the L-shaped angles 5 on the left and right sides of the hanging member 90. Will be.

In this way, since the hanging member 90 is joined at a position facing the position where the second joining member 4b of the first joining member 4a arranged in the horizontal direction is joined, the hanging member 90 is used. The aluminum joint structure 1 including the aluminum joint structure 1 is strengthened, and the lifting work during transportation can be performed efficiently and safely.

(Other embodiments)
The aluminum joint structure according to the present embodiment will be described with reference to FIGS. 12 to 14. In this embodiment, the description overlapping with each of the above embodiments will be omitted.

FIG. 12 is a diagram showing the configuration of an L-shaped angle. As shown in FIG. 12 (A), the L-shaped angle may have a structure having a convex body 110 that fits into the grooves 25a and 25b of the aluminum mold material on one surface in contact with the aluminum mold material, or may have a structure of FIG. As shown in (B), the structure may have a convex body 110 on two surfaces in contact with the aluminum mold material. When the convex body 110 is not provided, as described in each of the above embodiments, the convex body 110 is joined to the aluminum mold material via the fixing member 80 which is a pre-insertion nut, but in the case of FIG. 12, the convex body 110 is used. It is inserted into the grooves 25a and 25b and directly bolted as it is. In this case, since the convex body 110 is in close contact with the inside of the groove portions 25a and 25b, the joint between the L-shaped angle 5 and the aluminum mold material can be strengthened.

FIG. 13 is a diagram showing a state before joining when the first joining member 4a and the second joining member 4b are joined in a T shape. As shown in FIG. 13, in the second joining member 4b, the second aluminum ingot 3b is fixed in a state of slightly extending from the end face of the second aluminum mold member 2b. In this state, the extended cross section 31 of the aluminum ingot 3b is brought into close contact with the joint portion of the first aluminum member 4a, and is tightened with each bolt via the L-shaped angles 5a and 5b. In this way, the cross section 31 of the second aluminum ingot 3b can be firmly joined to the first aluminum profile 2a so as to bite into it.

FIG. 14 is a diagram showing the structure of an L-shaped angle in a state before joining when the first joining member 4a and the second joining member 4b are joined in a T shape. The L-shaped angles 5a and 5b shown in FIG. 14 have an L-shaped bending angle larger than 90 degrees. The L-shaped angles 5a and 5b are in a state of 90 degrees due to their elastic force in the joined state. That is, by firmly tightening each bolt via the L-shaped angles 5a and 5b, the L-shaped angles 5a and 5b are deformed to 90 degrees, and by utilizing the restoring force, the first aluminum member 4a and the second aluminum member 4a and the second It is possible to improve the bonding strength with the aluminum member 4b to each stage. The L-shaped angles 5a and 5b themselves may have an elastic force so as to be deformed to 90 degrees, or the L-shaped angles 5a and 5b themselves are made of an extremely hard material and are elastic on the contact surface with the aluminum mold material. Tightening may be strengthened by pinching the body.

1 Aluminum joint structure 2 (2a-2c) Aluminum profile 3 (3a, 3b) Aluminum ingot 4a 1st joint member 4b 2nd joint member 5 (5a, 5b) L-shaped angle 22a, 22b, 22e, 22f 1st bolt 22c, 22d, 22g, 22h 2nd bolt 24 Bolt hole 25 (25a, 25b) Groove 33 (33a-33d) Notch 80 Fixing member 81 Hole 90 Hanging member 110 Convex body

Claims (7)

At the joint portion of the aluminum mold material, a hollow cross section in the longitudinal direction of the aluminum mold material is formed, and one or more grooves along the longitudinal direction are formed in the outer peripheral portion. An aluminum ingot having a cross-sectional shape that can be inserted into the hollow of the aluminum profile is inserted, and a notch for fitting one or more first bolts corresponding to the position of the groove in the side width direction of the aluminum ingot is provided. An aluminum joint structure that is formed and is characterized in that the aluminum ingot is pressure-welded with the first bolt in the groove portion on the outside of the aluminum profile. In the aluminum joint structure according to claim 1,
The first aluminum ingot is inserted into the first aluminum mold to form the first joining member, and the second aluminum ingot aligns the end faces with the longitudinal ends of the second aluminum mold, or the end faces. A second joining member is formed by pressure welding with a second bolt in a state of being extended and inserted from the aluminum.
The end face of the second joining member on the side where the second aluminum ingot is fixed is the end surface of the first joining member with respect to the longitudinal side surface of the region where the first aluminum ingot is fixed. An aluminum joining structure in which a joining member 1 and the second joining member are brought into contact with each other so as to form a T-shape or an L-shape, and are bolted together via a first L-shaped angle. In the aluminum joint structure according to claim 2,
The first joining member is arranged along the horizontal direction, the second joining member is arranged along the vertical direction, and the second joining member in the first joining member is joined. An aluminum joint structure in which a hanging member is joined to the side surface in the longitudinal direction of the position facing the position. In the aluminum joint structure according to claim 3,
An aluminum joining structure in which the hanging member is pressure-welded with a third bolt penetrating the first aluminum ingot of the first joining member and joined to the longitudinal side surface of the first joining member. In the aluminum joint structure according to claim 3,
The hanging member is joined to the first joining member via a second L-shaped angle, and at least the second L is at a position where the hanging stress is strongly applied to the hanging member at the time of hanging. Aluminum joint structure where the character angle is arranged. In the aluminum joint structure according to any one of claims 2 to 5.
A convex shape that can be fitted into the groove portion of the first aluminum mold material and the second aluminum mold material on the surface where the first L-shaped angle contacts the first joint member and / or the second joint member. Aluminum joint structure on which the body is formed. In the aluminum joint structure according to any one of claims 2 to 6.
The first L-shaped angle is formed at an angle larger than 90 degrees, and the L is formed when the first joining member and the second joining member are bolted at the L-shaped angle. An aluminum joint structure formed by deforming the character angle to 90 degrees.

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