JPH04316705A - Coupling method for structural angle and structure thereof - Google Patents

Abstract

PURPOSE:To simply and positively couple together two structural angles at least one of which is hollow so that they are cross-coupled without using a fixing means such as welding, etc., and fixing members such as rivets, etc. CONSTITUTION:An insertion hole 6 for a second structural angle is drilled at the coupling portion of a first structural angle to be coupled. The second structural angle is inserted through the insertion hole 6 into the hollow part of the first structural angle. A load P is then applied to either the first or second structural angle to give plastic deformation 5 for connection for the purpose of engagement with the insertion hole 6.

Description

[Detailed description of the invention]

0001

TECHNICAL FIELD This invention relates to a method for connecting sections and their structure, and more particularly, to a method for joining two sections, at least one of which is hollow, in a crosswise manner. It concerns its structure.

0002

[Prior Art] With the recent trend toward lighter weight automobiles and other structures, aluminum shapes have been used, and the shapes are intersected, for example, in a T-shape. It is often used to combine.

[0003] Conventionally, in order to join the sections together as described above, fixing means such as welding or gluing, rivets,
This is done using fixing members such as bolts and nuts.

0004

[Problems to be Solved by the Invention] However, the conventional joining method not only requires a large number of man-hours, but also has the problem that reliable joining cannot be performed. That is, when joining by fixing means such as welding or adhesive, there are problems such as requiring dimensional accuracy of the joint part and also requiring skill in applying the brazing material or adhesive. In addition, in connection methods that use fixing members such as rivets, bolts, and nuts, fixing members such as rivets are required, and processing is required to attach these fixing members, which requires a lot of man-hours and There were problems such as time and effort required.

The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a method of joining shapes and a structure therefor that enable simple, reliable and strong joining.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the first method for joining shapes of the present invention is to connect two shapes, at least one of which is hollow, in a crosswise shape. Assuming the joining method, an insertion hole for the second shape member is drilled in the joint part of the first shape member, and the second shape member is inserted into the hollow part of the first shape member through the insertion hole. In addition, the present invention is characterized in that by applying a load to either the first or second shape member, deformation for coupling to engage with the insertion hole is applied.

[0007] In this first invention, any means may be used as long as it is a method of providing a deformation for coupling that engages with the insertion hole inside the hollow portion of the first section of the second section. For example, a deformation inducing portion may be provided at the tip of the second shape member inserted into the hollow portion of the first shape member, and deformation for coupling may be applied in the outward direction of the cross section having the deformation inducing portion. Can be done. In this case, the deformation guide portion can be formed, for example, by an opening such as a hole or a slit, or by a thin portion that is thinner than the surrounding wall thickness. Further, an expansion member having a tapered surface in the expansion direction is fitted to the tip of the second shape member inserted into the hollow part of the first shape member, and the tapered surface of the expansion member allows the coupling Can give deformation. In addition, a reinforcing ring is fitted to the tip of the second profile inserted into the hollow part of the first profile, and the load is applied via a pressurized medium sealed in the hollow part of the second profile. By adding this, a portion of the hollow portion of the first section other than the reinforcing ring may be deformed for connection. In this case, the pressurizing medium may be any medium as long as it transmits the load to the inside of the second profile, and for example, a liquid such as oil or a synthetic resin having elasticity such as polyurethane may be used. .

[0008] Furthermore, as another means, a first
By providing a notch that engages with the opening edge of the insertion hole of the second profile and applying a rotational load to the second profile, it is also possible to apply prying deformation to the notch. Furthermore, the first and second sections can be deformed by applying a load to the second section from a plane perpendicular to the insertion direction of the second section in the first section. . Furthermore, a deformable engagement recess and a pressure contact groove are provided on either one of the opposing parts of the inner wall of the first profile and the insertion side tip of the second profile, and the other is provided with a deformable engagement recess and a pressure contact groove. By providing an engagement protrusion to be engaged and a pressure contact protrusion that is press-fitted into the pressure contact groove, and applying a load to either the first or second shape member, the engagement recess is deformed to the engagement protrusion. In addition to the engagement, a pressure contact protrusion may also be press-fitted into the pressure contact groove.

Furthermore, as another means, for example, a connecting member is fixed to either the connecting portion of the first profile member or the second profile member, and the connecting member is fitted to the first or second profile member. By applying a load to either the first or second shape member and deforming the insertion portion for coupling, the first shape member and the second shape member are connected via the connecting member. They can also be combined. In this case, the connecting member may be fixed by any means as long as it is directly fixed to the first or second shape without using fixing means such as welding or rivets.
Alternatively, the connecting member can be fixed by being fitted into a narrow opening-shaped fixing groove provided in the second profile.

In addition, in order to further strengthen the connection between the first profile and the second profile, the second profile is passed through the first profile and the protrusion is expanded and deformed. It is preferable to do so. More preferably, a reinforcing portion along the insertion direction is provided at the insertion side end of the second section, or a bulge is provided at the tip of the base in a hollow section provided at the connection side end of the second section. After fitting the base of the expansion jig having a section and inserting the second section into the insertion hole of the first section, by pulling out the expansion jig, the bulging section presses into the insertion hole. It is better to give a matching deformation.

[0011] Furthermore, the second shape member joining structure of the present invention is based on the premise that two shapes, at least one of which is hollow, are joined in a crosswise manner, similar to the above-described joining method, An insertion hole for a second shape member is bored in the joint part of the first shape member, and the second shape member is inserted into the hollow part of the first shape member through the insertion hole, and the hollow part of the second shape member is inserted into the hollow part of the first shape member. It is characterized in that a coupling deformation is provided on the inner side of the portion to engage with the insertion hole.

[0012] In the second invention, the second shape member may have any form as long as it has a structure in which a deformation for coupling that engages with the insertion hole is provided inside the hollow portion of the first shape member. often,
For example, a deformation inducing part formed by an opening such as a hole or a slit or a thin part is provided at the tip of the second shape member inserted into the hollow part of the first shape member, and the deformation inducing part is provided. A coupling deformation can be provided in the outward direction of the cross section. Further, an expansion member having a tapered surface in the expansion direction is fitted to the tip of the second shape member inserted into the hollow part of the first shape member, and the tapered surface of the expansion member allows the coupling Variations may also be provided. In addition, a reinforcing ring is fitted to the tip of the second profile inserted into the hollow part of the first profile, and a part of the hollow part of the first profile other than the reinforcing ring is deformed for coupling. may be provided.

[0013] Furthermore, as another joining structure, the second section may be provided with a notch that engages with the opening edge of the insertion hole of the first section, and the section of this notch may be pryingly deformed. Also, the second
A first plate that engages with a plane perpendicular to the insertion direction of the profile.
and a modification of the second profile may also be provided. Furthermore, the first
A deformable engagement recess and a press-contact groove are provided on one of the opposing parts of the inner wall of the section and the insertion side tip of the second section, and the other is provided with an engagement recess that engages with the engagement recess. A structure may be provided in which a pressure contact protrusion is press-fitted into the convex portion and the pressure contact groove.

[0014] Furthermore, as another form, the connecting member fixed to either the joint portion of the first section or the second section is fitted and fixed to the other section, and the shape The first
It is also possible to connect the profile and the second profile. In this case, by forming the connecting member in the shape of a crank, the center of connection between the first section and the second section can be shifted.

In addition, in order to further strengthen the connection between the first profile and the second profile, the second profile is passed through the first profile and the protrusion is expanded and deformed. It is more preferable to do so, and more preferably, a reinforcing part along the insertion direction is provided at the insertion side end of the second profile, or the second profile is pressed into the insertion hole of the first profile. Better to insert.

[0016]

[Operation] According to the present invention configured as described above, the second profile is inserted into the first profile through the insertion hole drilled in the first profile.
By inserting the shape into the hollow part of the shape, applying a load to either the first or second shape, and giving the second shape a plastic deformation for the connection to engage the insertion hole. Moreover, the first section and the second section can be reliably connected in a crosswise manner. Further, the connecting member is fixed to either the connecting portion of the first shape member or the second shape member, and the connecting member is fixed to the connecting portion of the first shape member or the second shape member.
Or, by inserting the fitting into the second section and applying a load to either the first or second section to deform the fitting section for connection, the first section can be connected to the first section through the connecting member. The second profile can be easily and reliably joined.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below in detail with reference to the drawings.

◎First Embodiment FIG. 1 shows a cross-sectional perspective view of a coupling structure according to a first embodiment of the present invention.

The joint structure of the first embodiment includes a first member 1 formed of an extruded aluminum member having a rectangular cross section, and a second member 1 formed of an extruded aluminum member having a rectangular cross section.
When the first shape member 2 and the second shape member 2 are combined in a T-shape, a buckling deformation 5 (plastic deformation) is applied to the inside of the hollow portion 3 of the first shape member 1 in the second shape member 2. This is a case where the material 1 and the second shape material 2 are combined.

The connection method of this first embodiment is shown in FIGS. 2 and 3.
To explain with reference to FIG.
A shape member 2 having holes 7, which serve as deformation guide parts, formed on four sides of the tip end on the hollow insertion side is prepared and set in a press device (not shown) or the like. Next, the second profile 2 is inserted into the hollow part 3 of the first profile 1 through the insertion hole 6, and a load P is applied in the axial direction of the second profile 2 (see FIG. a), (
b)). Then, the part of the cross section having the deformation guiding hole 7 with the smallest cross-sectional area other than the outward hole, that is, the corner part of the second profile 2, is buckled outward 5 (plastic deformation). Since it engages with the insertion hole 6 (see FIGS. 3(a) and 3(b)), when the application of the load P is released, the first profile 1 and the second
The sections 2 are connected in a T-shape.

[0021] In this case, the first profile 1 is 60 mm x 30
mm, wall thickness 2mm, second profile 2 25mm x 25mm
, the wall thickness is 2 mm, the diameter of the deformation guiding hole 7 is 12 mm, the first
When the distance H = 2 mm from the inner surface of the profile 1 to the center of the deformation guiding hole 7 and a load P = 2500 kg was applied, a very strong bond was obtained without spoiling the external appearance. Ta. In this case, the material of the first profile 1 and the second profile 2 is JIS A6063S.

[0022] In the above explanation, the case has been described in which the deformation guiding holes 7 are bored on the four sides of the second section 2. However, the deformation guiding holes 7 do not necessarily have to be provided on the four sides; Similarly, deformation guiding holes 7 may be provided on the two sides. The first shape 1 formed in this way is 60mm x 30mm.
mm, wall thickness 2mm, second profile 2 25mm x 25mm
, the wall thickness is 2 mm, the diameter of the deformation guiding hole 7 is 12 mm, the first
When a load P = 3000 kg was applied with the distance H = 2 mm from the inner surface of the profile 1 to the center of the deformation guiding hole 7, a very strong bond was obtained without impairing the external appearance as in the above case. state was obtained. Further, the cross-sectional shape of the second section 2 does not necessarily have to be square, but may be circular or may have irregular shapes. In the case where the second profile 2 is a hollow circular shape, the first profile 1 is 60m long.
m x 30 mm, wall thickness 2 mm, diameter of second section 2 is 30 mm
mm, wall thickness 2 mm, diameter of deformation guiding hole 7 12 mm,
When the distance H from the inner surface of the first profile 1 to the center of the deformation guiding hole 7 was set to 2 mm, and a load P = 3200 kg was applied, the result was as follows without impairing the aesthetic appearance as described above.
A very strong bond was obtained.

Furthermore, in the above description, the case where the lower surface of the first profile member 1 is flat has been explained, but it is also possible to connect the first profile member 1 in the same manner even if the lower surface has an uneven portion 8 as shown in FIG. .

In the above description, the case where the deformation guiding part is formed by the hole 7 has been described, but in addition to the hole 7, the deformation guiding part is formed by, for example, a plurality of slits 7a, 7a, . . . formed at intervals. (see FIG. 5(a)), or the deformation guiding portion may be formed by a thin portion 7b that is thinner than the surrounding wall thickness (see FIG. 5(b)).

◎Second Embodiment FIGS. 6 and 7 are cross-sectional views illustrating a joining method and structure of a second embodiment of the present invention.

The second embodiment is a case where the second profile is deformed using an auxiliary member. That is, the first
After fitting the expansion member 9 having a tapered surface 9a in the expansion direction to the tip of the second shape member 2 to be inserted into the hollow part 3 of the second shape member 1, the first shape member 9 is inserted through the insertion hole 6. By inserting it into the hollow part 3 of the profile 1 and applying a load P in the axial direction (
(see FIGS. 6(a) and (b)), tapered surface 9a of expansion member 9
This is a case in which plastic deformation 5 for bonding is applied by (see FIGS. 7(a) and 7(b)). In this case, the expansion member 9
The material may be any material; for example, aluminum may be used. Further, its width dimension is set to be slightly smaller than the insertion hole 6.

In the second embodiment, when the first shape member 1 and the second shape member 2 were joined under the following conditions in the same manner as in the first embodiment, the aesthetic appearance was impaired in the same way as above. A very strong bond was obtained.

[0028] That is, ■ the first shape member 1 is 25 mm x 2
5mm, wall thickness 2mm, second profile 2 20mm x 20m
m, the wall thickness is 2 mm, the taper angle of the expanding member 9 is 15 degrees, and the amount of protrusion of the second profile 2 into the hollow portion 3 is S = 1
mm, and when a load P = 1500 kg is applied, ■ the first profile 1 is 60 mm x 30 mm, wall thickness 2 mm, the second profile 2 is 25 mm x 25 mm, wall thickness 2 mm, expansion member 9
When the taper angle of is 15 degrees, the amount of protrusion of the second profile 2 into the hollow part 3 is S = 1 mm, and a load P = 2000 kg is applied, ■ the first profile 1 is 60 mm x 30 mm,
The wall thickness is 2 mm, the diameter of the second profile 2 is 30 mm, and the wall thickness is 2 m.
m, the taper angle of the expanding member 9 is 15 degrees, the amount of protrusion of the second profile 2 into the hollow part 3 is S = 1 mm, and the load P = 30
When 00 kg was added, the bonding was performed in the same manner as above, and a sufficiently satisfactory result was obtained.

The other parts of the second embodiment are the same as those of the first embodiment, so their explanation will be omitted.

◎Third Embodiment FIGS. 8 and 9 are schematic sectional views of a joining method and a joining structure according to a third embodiment of the present invention.

The third embodiment is a case in which the second profile is deformed using a pressurized medium. That is, the first
A reinforcing ring 10 is fitted to the tip of the second profile 2 inserted into the hollow part 3 of the first profile 1.
A liquid 11 such as oil, which is a pressurizing medium, is sealed in the hollow part 4 of the second shape member 2 inserted therein, and a hydraulic pressure p is applied to the liquid 11.
At the same time, by applying a compressive load F to the second profile 2 (see FIGS. 8(a) and (b)), it is bonded to the part other than the reinforcing ring 10 in the hollow part 3 of the first profile 1. This is a case in which modification 5 is given. In this case, the second
By arranging the deformation prevention wall 35 around the outer periphery of the second shape member 2, deformation of the second shape member 2 other than the joint portion can be prevented.

[0032] The reinforcing ring 10 may protrude to the outside of the second profile 2 and be fitted therein, or alternatively, as shown in FIG. You may.

In the above explanation, the case where the pressurizing medium is a liquid 11 such as oil is described, but the pressurizing medium is not necessarily limited to the liquid 11 such as oil, and as shown in FIG. It is also possible to use an elastic member 12 such as the following. In this case, the through hole 13 provided in the elastic member 12
A load can also be applied by pulling downwardly the loading jig 14 having the engaging head 14a that penetrates through it. After the first profile 1 and the second profile 2 are joined, the loading jig 14 may be pulled upward or broken under a certain load.

The other parts of the third embodiment are the same as those of the first and second embodiments, so their explanation will be omitted.

◎Fourth embodiment FIG. 12 is a perspective view of the first section in the fourth embodiment, FIG.
3 is a perspective view of the second profile in the fourth embodiment, and FIGS. 14 to 16 are front views and side sectional views illustrating the coupling method and structure of the fourth embodiment.

The fourth embodiment is a case in which a rotational load is applied to provide deformation for connection. That is, as shown in FIG.
An inclined rectangular insertion hole 6 is bored, and a notch 15 is formed in the second section 2 to engage with the opening edge 6a of the insertion hole 6 of the first section 1, as shown in FIG. This is a case in which the notch portion is subjected to prying deformation by applying a rotational load P to the second profile 2, as shown in FIG.

In this case, if the second section 2 is rotated in the opposite direction after being deformed, there is a risk that the bonded state will be released. It is preferable to interpose it between the pair of L-shaped locking pieces 1b and the second shape member 2 provided in the. This reverse rotation stopper member 16
may be provided with a locking groove 16a that engages with the locking piece 1b, as shown in FIG. 16, or may be a prismatic member interposed inside the locking piece 1b. Although the rotation angle of the second profile 2 is arbitrary, by rotating the second profile 2 by the same angle as the inclination angle θ of the insertion hole 6, the first profile 1 can be rotated at any angle.
and the surface of the second profile 2 can be made the same.

In the above description, the case where the first profile 1 is a hollow profile with a closed cross section has been explained, but the first profile 1 may be formed of, for example, a C-shaped hollow profile with an open cross section. You can also do that.

Note that other parts of the fourth embodiment are the same as those of the first to third embodiments, so their explanation will be omitted.

◎Fifth Embodiment FIG. 17 is a plan view of a second profile in the fifth embodiment of the present invention, FIG. 18 is a perspective view of another second profile in the fifth embodiment, FIGS. FIG. 20 shows a side view and a plan view for explaining the coupling method and structure of the fifth embodiment.

In the fifth embodiment, a load P is applied to the first section 1 from a surface perpendicular to the direction in which the second section 2 is inserted.
This is a case where the deformation 5 is given to the section 1 and the second section 2. That is, first, the buckling prevention member 17 having the cylindrical reinforcing portion 17a is installed in the insertion side space of the second profile 2.
(see Figure 17) or insert the second profile 2
A reinforcing rib 18 is provided in (see FIG. 18), and
After inserting the second profile 2 into the hollow part 3 of the first profile 1 through the insertion hole 6 drilled in the first profile 1, the insertion direction of the second profile 2 and By abutting a jig such as a punch 19 on the perpendicular surface 1c of the first section 1, and applying a load P using a hammer (not shown) or the like (Fig. 19
(see FIG. 21), this is a case where the first shape member 1 and the second shape member 2 are given a coupling deformation 5 and are coupled.

In this case, as shown in FIG. 20, if a cross-shaped slit 20 or a small hole (not shown) is formed in advance at the position where the load P is applied, the load P can be reduced. Can be added accurately. Further, by applying the load P to both sides as shown by the imaginary line in FIG. 19, an even stronger connection can be achieved.

In the fifth embodiment, the first profile 1 is 60
mm x 30 mm, wall thickness is 2 mm, and the second profile 2 is 2
When the dimensions are 5 mm x 25 mm and the wall thickness is 2 mm, and the outer diameter of the cylindrical reinforcing portion 17a of the buckling prevention member 17 is 16 mm and the wall thickness is 1.5 mm, and a load P = 2900 kg is applied. Under the same conditions, when a cross-shaped slit 20 was provided and a load P = 2000 kg was applied, a strong bonded state was obtained that was flat except for the dent in the caulked part and free of protrusions.

Note that the other parts of the fifth embodiment are the same as those of the first to fourth embodiments, so
The explanation will be omitted.

◎Sixth Embodiment FIGS. 22 and 23 are side sectional views illustrating a joining method and a joining structure according to a sixth embodiment of the present invention.

The sixth embodiment is a case in which, in addition to the deformation for coupling, the first profile member and the second profile member are engaged with each other to obtain a strong bond. That is, an engagement recess 23 is formed on the outer surface of an engagement piece 22 that can be deformed by a deformation groove 21 along the axial direction at the insertion side end of the second section 2, and a part parallel to the deformation groove 21 is pressed. A groove 24 is provided on the wall surface facing the insertion hole 6 of the first profile 1, and an engagement protrusion 25 that engages with the engagement recess 23 and a press-fit protrusion 2 that press-fits into the press-fit groove 24 are provided.
6, and by applying an axial load P to the second profile 2, the engagement piece 22 is deformed and the engagement recess 23 is deformed.
This is a case where the contact projections 26 are engaged with the engagement protrusions 25 and the pressure contact projections 26 are press-fitted into the pressure contact grooves 24 for coupling.

In this case, by providing a sloped surface 22a on the distal end side of the engagement recess 23 of the engagement piece 22 and also providing a similar slope surface 25a on the engagement protrusion 25, the engagement recess 2
3 and the engagement protrusion 25 can be smoothly engaged. In addition, pressure contact groove 2
By making the width of the press-contact protrusion 26 slightly larger than the width of 4, the press-contact becomes strong and the bonded state becomes even stronger.

As described above, the engagement recess 23 and the engagement protrusion 25
A strong bonding state can be maintained by both the engagement with the pressure contact groove 24 and the pressure contact engagement between the pressure contact groove 24 and the pressure contact protrusion 26.

In the above description, the second profile 2 is provided with the engagement recess 23 and the pressure groove 24, and the first profile 1 is provided with the engagement protrusion 25 and the pressure contact protrusion 26. As described above, the structure is not necessarily limited to this, and may be provided in the opposite manner, or if they are in a state of relative engagement, these engagement recesses 23, engagement protrusions 25, and pressure grooves 24
and pressure contact protrusions 26 can be provided as desired. Also,
It is also possible to provide multiple sets.

◎Seventh Embodiment FIG. 24 is a perspective view of the first profile in the seventh embodiment of the present invention, FIG. 25 is a perspective view of the second profile in the seventh embodiment, and FIG. 26 is the seventh embodiment. A perspective view of a connecting member in an example, FIG. 2
7 and 28 are cross-sectional views illustrating the combined state of the seventh embodiment.

The seventh embodiment is a case in which a connecting member is interposed to connect the first section and the second section. That is, the fixing groove 27 provided on the connecting side surface of the first section 1
After fixing one end of the connecting member 30 to the second frame member 2, the other end of the connecting member 30 is inserted into the hollow part 4 of the second section 2, and then
A jig such as a punch 19 is brought into contact with a surface perpendicular to the insertion direction of the connecting member 30 in the profile 2, and a load P is applied with a hammer (not shown) to give a deformation 5 for coupling to the insertion part. This is a case where the first section 1 and the second section 2 are connected via the connecting member 30.

In this case, a fixing groove 27 in the form of a narrow opening is provided on the connecting side surface of the first section 1, and the fixing groove 27 is slidably fitted into the fixing groove 27 at the fixed side end of the connecting member 30. By providing the T-shaped fixing portion 31, the connecting member 30 can be directly fixed to the first section 1 without using fixing members such as welding or rivets. Further, an upper horizontal piece 28 is provided on the upper part of the first section 1, and this upper horizontal piece 2
By providing a notch 28a corresponding to the width of the second section 2 in a part of the section 8, the second section 2 can be prevented from moving in the lateral direction. Further, by providing the lower horizontal piece 29 at the lower part of the first profile 1, the second profile 2 can be placed on this lower horizontal piece 29, and the connecting member 3
0 and the second shape member 2 can be supported. On the other hand, a pair of protrusions 34 for guiding the insertion portion 32 of the connecting member 30 are provided on both side walls 2a in the hollow portion 4 of the second profile 2.

The connecting member 30 is made of an extruded aluminum section, and a caulking hole 33 is formed in the insertion section 32 inserted into the hollow section 4 of the second section 2. There is. This caulking hole 33 penetrates in the vertical direction when caulking is performed from above and below, and in the horizontal direction when caulking is performed from the side (see the imaginary line in FIG. 26). In addition, the connecting member 30 has the fixing part 31 and the insertion part 32 coaxially arranged (see FIG. 26(a)), and also has the fixing part 31 and the insertion part 32 arranged in a stepped manner as shown in FIG. 26(b). By forming the first shape member 1 and the second shape member 2, the first shape member 1 and the second shape member 2 can be connected to each other in a staggered manner (see FIGS. 27 and 28). In addition, when joining the first profile 1 and the second profile 2 in a stepped manner, as shown in FIG.
Alternatively, it is necessary to provide a notch on the side of the connecting member 30 shown in FIG. 26(b).

[0054] In the above explanation, after the connecting member 30 is fixed to the first section 1, the second section 2 is deformed 5 and is connected to the connecting member 30. The profile 1 and the second profile 2 may be reversed. Further, in the seventh embodiment, it is possible to join dissimilar materials as in the first to sixth embodiments, and it is also applicable to joining sections having various cross-sectional shapes.

[0055] In the above embodiment, the first shape member 1 and the second
Although the case where the first profile member 1 and the second profile member 2 are coupled in a T-shape has been described, it is not necessarily limited to the case where the first profile member 1 and the second profile member 2 are coupled at an appropriate angle. They can also be combined in a crosswise manner.

◎Eighth Embodiment FIG. 29 is a sectional view of a joint structure according to an eighth embodiment of the present invention, FIG. 30 is a sectional view taken along line A-A in FIG. 29, and FIG. 31 is a second profile in the eighth embodiment. FIG. 32 is a partially sectional perspective view of the first section in the eighth embodiment.

The eighth embodiment is a case where the connection between the first section and the second section is further strengthened. That is, as shown in FIG. 31, the joining side tip of the second shape member 2 formed in a flat hollow shape is crushed by a press or the like to form reinforcing portions, that is, reinforcing ribs 35, 35 along the insertion direction on both sides. and engaging pieces 36, 36 that can be divided by cutting off both ends on the distal end side.
A flat portion 37 having a concave cross section is provided. On the other hand, as shown in FIG. 32, an insertion hole 6 having a similar cross-sectional shape to the flat part 37 of the second profile 2 is bored in the first profile 1 by laser machining. Then, after inserting and penetrating the flat part 37 of the second profile 2 into the insertion hole 6 of the first profile 1,
This is a case where a load P is applied to the engaging piece 36 protruding from the profile 1, causing it to expand and deform 5 and engage with the opening edge of the insertion hole 6.

With this configuration, the step portion 37a between the base side of the second section 2 and the flat portion 37 and the expansion deformation 5 are connected in a sandwich-like manner, so that a strong connection is achieved. can do. Further, by drilling the insertion hole 6 by laser processing, it is possible to perform hole processing with high precision, and the flat portion 37 can be inserted into the insertion hole 6 in a close state. In the above description, a case has been described in which two reinforcing ribs 35, which are reinforcing portions, are provided, but the number of reinforcing ribs 35 does not necessarily have to be two, and may be one or three or more.

◎Ninth Embodiment FIG. 33 is a cross-sectional view of the combined state of the ninth embodiment of the present invention, FIG. 34 is an exploded perspective view of the second profile and the expansion jig in the ninth embodiment, and FIG. 35 shows a perspective view of the second profile with the expansion jig attached.

The ninth embodiment is a case in which the insertion hole of the first section and the insertion section of the second section are brought into close contact to form a strong connection. In other words, the second
An expansion jig 40, which has a plate-shaped base 38 and a bulge 39 having a dimension slightly larger than the thickness of the base 38 at the tip thereof, is inserted into the joining side end of the profile 2 with a portion protruding. After that, the base 38 and the second profile 2 are pressed together by press molding (see FIG. 35), and as shown in FIG. 36, the second profile 2 fitted with the expansion jig 40 is Place the tip of the connecting side as the first
After inserting it into the insertion hole 6 of the section 1 of FIG. 37
As shown in FIG.
This is a case where the base part 38 is plastically deformed 5 by the difference between the dimension of the base part 38 and the thickness of the base part 38, and is pressed into engagement with the opening edge of the insertion hole 6. After joining the first section 1 and the second section 2 in this way, the protrusion of the second section 2 is finally expanded and deformed 5 to make the connection even stronger. Can be done. In this case, the insertion hole 6 provided in the first profile 1 can be machined with high precision by laser processing in the same manner as described above. Further, it is preferable to provide a connection hole 41 for connecting a device that applies a tensile load to the expansion jig 40.

[0061] Therefore, since there is no gap between the insertion hole 6 and the second shape member 2, rattling or twisting after joining can be prevented, and a strong joint can be achieved.

[0062]

As explained above, according to the method and structure for joining shapes of the present invention, which are constructed as described above, the following effects can be obtained.

[0063] The second profile is inserted into the hollow part of the first profile through the insertion hole drilled in the first profile, and a load is applied to either the first or second profile. In addition, by giving the second profile a coupling deformation that engages with the insertion hole, the first profile and the second profile can be easily and reliably connected without using fixing means such as welding or fixing members such as rivets. Two profiles can be joined in a crosswise manner. Further, a connecting member is fixed to either the connecting portion of the first or second shape member, and the connecting member is inserted into the first or second shape member, and the connecting member is inserted into the first or second shape member.
By applying a load to one of the sections and deforming the fitting part for connection, it can be connected to the first section through the connecting member without using fixing means such as welding or fixing members such as rivets. The second profile can be easily and reliably joined.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional perspective view of a coupling structure according to a first embodiment of the present invention.

FIG. 2 is a front cross-sectional view and a side cross-sectional view thereof showing a coupled state of the first embodiment.

FIG. 3 is a front cross-sectional view and a side cross-sectional view of the joint structure of the first embodiment.

FIG. 4 is a sectional view showing another coupling structure of the first embodiment.

FIG. 5 is a sectional view showing another form of the deformation guide part in the first embodiment.

FIG. 6 is a front cross-sectional view and a side cross-sectional view thereof showing a coupled state of the second embodiment.

FIG. 7 is a front cross-sectional view and a side cross-sectional view of the joint structure of the second embodiment.

FIG. 8 is a front cross-sectional view and a side cross-sectional view thereof showing a coupled state of the third embodiment.

FIG. 9 is a front cross-sectional view and a side cross-sectional view of the joint structure of the third embodiment.

FIG. 10 is a cross-sectional view showing another attachment mode of the reinforcing ring in the third embodiment.

FIG. 11 is a sectional view showing another coupled state of the third embodiment.

FIG. 12 is a perspective view showing the first section in the fourth embodiment.

FIG. 13 is a perspective view showing a second profile in the fourth embodiment.

FIG. 14 is a front view showing a coupled state of the fourth embodiment.

FIG. 15 is a front view showing a part of the coupling structure of the fourth embodiment in cross section.

FIG. 16 is a side sectional view of the coupling structure of the fourth embodiment.

FIG. 17 is a plan view showing a second profile and a buckling prevention member in the fifth embodiment.

FIG. 18 is a perspective view showing another form of the second profile in the fifth embodiment.

FIG. 19 is a side sectional view showing a coupled state of the fifth embodiment.

FIG. 20 is a plan view showing the coupling structure of the fifth embodiment.

FIG. 21 is a sectional view of a main part showing a coupling structure of a fifth embodiment.

FIG. 22 is a front sectional view showing the state of the sixth embodiment before connection.

FIG. 23 is a front cross-sectional view and a side cross-sectional view thereof showing a joined state of the sixth embodiment.

FIG. 24 is a perspective view showing the first section in the seventh embodiment.

FIG. 25 is a perspective view showing a second profile in the seventh embodiment.

FIG. 26 is a perspective view showing two forms of the connecting member in the seventh embodiment.

FIG. 27 is a sectional view showing a coupled state of the seventh embodiment.

FIG. 28 is a sectional view showing another coupled state of the seventh embodiment.

FIG. 29 is a sectional view showing a coupled state of the eighth embodiment.

FIG. 30 is a sectional view taken along line AA in FIG. 29;

FIG. 31 is a perspective view showing a second profile in the eighth embodiment.

FIG. 32 is a perspective view showing the first section in the eighth embodiment.

FIG. 33 is a sectional view showing a coupled state of the ninth embodiment.

FIG. 34 is an exploded perspective view showing the second profile and the expansion jig in the ninth embodiment.

FIG. 35 is a perspective view showing a fitted state of the second profile and the expansion jig in the ninth embodiment.

FIG. 36 is a sectional view showing the state of the ninth embodiment before connection.

FIG. 37 is an enlarged sectional view showing a coupled state in the ninth embodiment.

[Explanation of symbols]

1 First profile 2 Second profile 5　Deformed part 6 Insertion hole 6a Opening edge 7 Deformation guidance hole (deformation guidance part) 7a Slit (deformation guiding part) 7b Thin wall part (deformation guiding part) 9 Expansion member 9a Tapered surface 10 Reinforcement ring 11 Liquid (pressurized medium) 12 Elastic member (pressure medium) 15 Notch 23 Engagement recess 24 Pressure groove 25 Engagement convex part 26 Pressure contact protrusion 27 Fixed groove 30 Connecting member 31 Fixed part 32 Insertion part 35 Reinforcement rib (reinforcement part) 36 Engagement piece 37 Flat part 38 Base 39 Swelling part 40 Expansion jig P Load p Hydraulic pressure (load) F Compressive load

Claims (11)

[Claims] Claim 1. A method for joining two shapes, at least one of which is hollow, in a crosswise manner, comprising:
An insertion hole for a second shape member is formed in the joining part of the shape members, and the second shape member is inserted into the hollow part of the first shape member through the insertion hole, and the first or second shape member is inserted into the hollow part of the first shape member. A method for joining shapes, characterized in that by applying a load to one of the shapes, deformation is applied for joining to engage with the insertion hole. 2. A method for joining two shapes, at least one of which is hollow, in a crosswise manner, comprising:
A connecting member is fixed to either one of the connecting portions of the shape member or the second shape member, the connecting member is inserted into the first or second shape member, and the connecting member is fixed to either the first or second shape member. 1. A method for joining shapes, which comprises joining a first shape member and a second shape member via a connecting member by applying a load to apply deformation for coupling to the insertion portion. 3. In a structure for joining two shapes, at least one of which is hollow, in a shape of a cross, the first
An insertion hole for the second shape member is bored in the joining part of the shape members, and the second shape member is inserted into the hollow part of the first shape member through the insertion hole, and the inside of the hollow part is inserted. A joint structure for a shape member, characterized in that a joint deformation that engages with an insertion hole is provided in the member. 4. A deformation guide is provided at the tip of the second profile inserted into the hollow part of the first profile, and a coupling deformation is provided in the outward direction of the cross section having the deformation guide. 4. The joining structure of sections according to claim 3, characterized in that: 5. An expansion member having a tapered surface in the expansion direction is fitted to the distal end of the second shape member inserted into the hollow portion of the first shape member, and the tapered surface of the expansion member 4. The structure for joining sections according to claim 3, further comprising a deformation for joining. 6. A reinforcing ring is fitted to the tip of the second profile inserted into the hollow part of the first profile, and is coupled to a portion of the hollow part of the first profile other than the reinforcing ring. 4. The structure for connecting sections according to claim 3, further comprising a deformation for the shape. 7. The second shape member is provided with a notch that engages with the opening edge of the insertion hole of the first shape member, and the notch is provided with a prying deformation. Combined structure of sections. 8. The joining of the sections according to claim 3, characterized in that the first and second sections are deformed so as to engage with each other on a plane perpendicular to the insertion direction of the second section. structure. 9. A deformable engagement recess and a press-contact groove are provided on one of the opposing parts of the inner wall of the first profile and the insertion side tip of the second profile, and the other is provided with the engagement groove. 4. The structure for joining shapes according to claim 3, further comprising an engagement convex portion that engages with the recess and a press-contact protrusion that press-fits into the press-contact groove. 10. In a shape joining structure in which two shapes, at least one of which is hollow, are joined in a crosswise manner, the shape is fixed to either the first shape or the second shape. A connecting member is inserted into the other shape member and engages with a deformed portion provided on the other shape member to connect the first shape member and the second shape member via the connecting member. A joint structure of shapes that is characterized by a 11. A flat part having a reinforcing part along the insertion direction and a separable engagement piece is provided at the joining side end of the second profile, and the flat part is inserted into an insertion hole having a similar shape to the flat part. 4. The structure for joining shapes according to claim 3, wherein the engaging piece is expanded and deformed to engage with the insertion hole.