JP2003025094A - Structure for joining extruded-shape and product of frame assembly, using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for joining an extruded-shape in which in the case the extruded-shapes having a plurality of hollow parts partitioned with partition walls are butt-joined along the longitudinal direction, a necessary strength of the joined part containing the neighborhood of the partition walls is obtained and working for joining is easily performed, and a product of a frame assembly using this structure. SOLUTION: In the structure 10 for joining the extruded shape, one pair of the extruded shapes 1a, 1b each composed of an aluminum alloy and having one pair of the hollow parts 2, 2 which are partitioned with the partition wall 3 along the longitudinal direction are butted with each other along the longitudinal direction of the extruded shapes 1a, 1b at the end surfaces of the shapes. Then, in each of the hollow parts 2, 2 communicating the one pair of extruded shapes 1a, 1b, a join material 6 having the outer shape profiling the inner shape of the hollow part 2 and having a hollow part 7 and composed of the aluminum alloy, is individually inserted. Further, one pair of butted extruded shapes 1a, 1b are welded (joined) W along the interval between both end surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a pair of extruded shape members made of an aluminum alloy and a frame assembly product using the same.

[0002]

2. Description of the Related Art When a pair of extruded profiles having a plurality of hollow portions made of aluminum alloy and partitioned by a partition wall along the longitudinal direction are butt-welded along the longitudinal direction and welded along the entire circumference, the partition walls are directly welded to each other. Can not do it. For this reason, there is a problem in that the characteristics of the extruded shape member having the partition wall attached thereto to increase the rigidity cannot be utilized in the joint portion. It has also been proposed to insert a joint material across a plurality of hollow portions of a pair of extruded shape members to be joined.
(See Japanese Patent Laid-Open No. 10-76375).

If the extruded shape is long or has a complicated cross-sectional shape, it is difficult to secure the strength in the vicinity of the joint unless a joint material having a certain length is inserted. It was However, when a long joint material is inserted between a pair of extruded shape members, there is a problem that the material cost increases and the obtained product becomes heavy. Further, when a pair of extruded profile members having a hollow portion provided therein are welded along a longitudinal direction in a plane orthogonal to the longitudinal direction of the pair of extruded profile members when joining such as butt welding. The mechanical strength of the heat-affected portion near the weld is generally lower than the strength of the extruded profile itself which is the base material. In addition, when a pair of welded extruded shape members are repeatedly subjected to a tensile stress and a twisting stress in the vicinity of the above-mentioned plane, which are separated along the longitudinal direction, the overall size is increased to maintain sufficient strength. It is necessary to consider such as For this reason, there is also a problem that useless material is required except for the welded portion.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the problems in the prior art described above, and when an extruded profile having a plurality of hollow portions is butt-joined along the longitudinal direction by a partition wall, the partition An object of the present invention is to provide a joint structure of an extruded shape member which can obtain a required joint strength including a portion near a wall and can be easily processed for joining, and a frame assembly product such as a space frame using the joint structure.

[0005]

In order to solve the above-mentioned problems, the present invention provides a plurality of hollow portions extending over a pair of extruded shape members to be joined with a joint material having an outer diameter following the inner diameters of the hollow portions. It was made with the idea of inserting it.
That is, the first extruded profile joining structure according to the present invention (claim 1) has a pair of extruded profiles each made of an aluminum alloy and having a plurality of hollow portions partitioned by partition walls along the longitudinal direction. Are abutted along the longitudinal direction of each extruded profile at the end face of each, for each of the plurality of hollow portions communicating across the pair of extruded profile, the outer shape and the hollow portion in accordance with the inner shape of the hollow portion. A plurality of joint materials made of the aluminum alloy are individually inserted, and the pair of butted extruded shape members are joined together between the end faces of both members.

According to this, for each of the plurality of hollow portions communicating with the pair of extruded shape members, a pair of the above-mentioned pair of hollow members is inserted with a joint member having an outer shape and a hollow portion that conforms to the inner shape of the hollow portion. The extruded profile is butt-jointed between the end faces. Therefore, for example, the penetration depth at the time of welding can be easily increased until the joint material is melted.
That is, in the case where the joint material serves as a back plate during welding and is a thin extruded profile material that is difficult to weld, the range of welding conditions during welding is expanded, and thus welding is facilitated.
Further, after joining, the resistance to bending and torsional stress near the joint also becomes high. Moreover, the material of the joint material can be saved and the weight in the vicinity of the joint can be reduced. As the joint material, a hollow extruded shape material or precision casting material made of an aluminum alloy is used.

A second extruded profile joining structure according to the present invention (claim 2) is a pair of extruded profiles made of an aluminum alloy and having a plurality of hollow portions partitioned by partition walls along the longitudinal direction. Is abutted along the longitudinal direction of each extruded profile at each end face, a plurality of hollow portions communicating across the pair of extruded profile, the outer shape following the inner shape of these hollow portions and A single joint material made of an aluminum alloy having a single or a plurality of hollow portions is inserted, and the pair of extruded shape members abutted with each other are joined along between the end faces of both, To do.

[0008] According to this, in the state in which the single joint material having the outer shape and the single shape or the hollow portion following the inner shape of the plurality of hollow portions which communicate with each other across the pair of extruded shape members is inserted, The extruded profile is butt-jointed between the end faces. Therefore, by inserting a single joint material and performing welding, the penetration depth during welding can easily reach the joint material, and after joining, the resistance to bending and torsion stress near the joint becomes high. . Moreover, the material of the joint material can be saved, the insertion work can be facilitated, and the weight in the vicinity of the joint can be reduced.

Further, in the joint structure of the second extruded profiles, a part of the single joint material or the joint material is formed in a slit provided along the longitudinal direction of the partition walls of the pair of extruded profiles. Also included is a joint structure of extruded profiles (claim 3) in which the slit provided in is inserted. According to this, a slit provided at the end of each partition wall of the pair of extruded profile, a slit provided in a part of the single joint material or the joint material is inserted, in a state where they are mutually inserted, Joining such as welding is applied. For this reason, it is possible to suppress a decrease in the joint strength in the vicinity of the joint portion as well as the joint portion. Incidentally, the joint member, a plurality of hollow portions to be fitted in each hollow portion in the extruded profile is connected to each other by a web (connecting piece) substantially R-shaped cross-sectional shape, a plurality of in the extruded profile. An extruded shape member or a precision cast material having a cross-sectional shape having an outer shape and a hollow portion that follow the inner shape of the entire hollow portion is used.

Further, in the third extruded profile joining structure according to the present invention (claim 4), a pair of extruded profiles each made of an aluminum alloy and having one or a plurality of hollow portions along the longitudinal direction are provided. A joint member made of an aluminum alloy having an outer shape that follows the inner shape of the hollow portion, which is abutted along the longitudinal direction of each extruded shape member at the end surface and communicates with the pair of extruded shape members. Is inserted, at least a pair of sides on the end faces of the pair of extruded profiles, the side is oblique to the longitudinal direction of the extruded profile, the steps parallel and orthogonal to the longitudinal direction of the extruded profile. The above-mentioned pair of extruded shape members that are abutted with each other, or that are stepwise and partially include an oblique side, are joined along the end faces of both sides.

According to this, welding is performed along the longitudinal direction of the pair of extruded profiles along the end faces of the oblique sides, or between the end faces of the parallel and orthogonal stepped sides, and thus obtained. It can be formed by increasing the length of a joint such as a welded portion. For this reason, for example, even if the mechanical strength in the heat-affected portion near the welded portion is reduced, it is possible to compensate for the reduction in strength due to the increased welding length. As a result, it is possible to obtain a sufficient resistance force even if the tensile stress such that the pair of extruded shape members are separated from each other along the longitudinal direction, or the bending stress and the torsion stress near the end faces are repeatedly received. Therefore, a joining structure with stable joining quality such as welding can be obtained. The diagonal sides are not limited to a pair of opposite sides, and adjacent diagonal sides may be continuously provided with diagonal sides having the same or different gradients (angles). Further, the stepped side or the stepped side including a partly slanted side can be easily and accurately formed by pressing the end portion of the extruded profile. Further, the hollow portion of the extruded shape member to be joined and the joint material inserted into the hollow portion may be singular or plural, and the first or second joining structure may be used together.

Further, in the present invention, the joint is MIG,
A joint structure of the extruded shape (claim 5), which is either TIG, laser welding, or friction stir welding, is also included. According to this, it is possible to reliably join together the joint members in which both the profile members are fitted along the various end surfaces of the pair of extruded profile members. The friction stir welding is a welding method in which the vicinity of the end faces of the pair of extruded profile members is stirred and welded while being softened in a solid state, and while the probe protruding coaxially from the center of the bottom surface of the cylindrical body is rotated. , A pair of extruded profile members are moved along the end faces thereof. Therefore, no filler material is required and the joint surface after joining is relatively flat, so that finishing can be omitted.

On the other hand, in the frame assembly product of the present invention (claim 6), by using the third extruded profile joining structure, at least two sets of frame units having the pair of extruded profiles on both sides are joined together. In the frame assembly product obtained by the above, the pair of extruded profile members in one frame unit are arranged in a divergent manner toward the other frame unit, and the end surface thereof includes the oblique side or the stepped side. The end faces of the pair of extruded profiles in the other frame unit include diagonal sides or stepped sides that are symmetrical with the sides of the end faces of the pair of extruded profiles in the one frame unit, and the two sets of The ends of a pair of extruded profiles that are inserted into the ends of a pair of extruded profiles in one of the frame units and that face each other in the other frame unit. They are joined respectively by and the joining structure butt separately and it is characterized.

According to this, by slightly elastically deforming the vicinity of each joint member of the extruded shape member in one frame unit in which the joint member is inserted in advance, the hollow portion of the opposed extruded shape member in the other frame unit is formed. Can be easily inserted. Therefore, the plurality of frame units can be easily joined so that the joining work can be performed, so that the frame assembly product can be manufactured with high accuracy and efficiency. When the joint material is inserted into a pair of extruded profile members arranged in a divergent shape in one of the frame units, the length of the joint material protruding from the end face of the extruded profile is longer than the length inserted into the hollow part of the extruded profile. Temporary welding is performed so that the region where the length becomes shorter is located closer to the outer side of the pair of extruded shape members arranged in a divergent shape. In such a form, the end faces of the pair of extruded profile members arranged in a divergent shape in one unit are formed with diagonal sides or stepped sides that are symmetrical to each other and inward, and the pair of extruded units in the other unit are extruded. On the end surface of the shape member, diagonal sides or stepped sides that are symmetrical with each other and face outward are formed. However,
The form is not limited to the above.

The present invention also includes a frame assembly product (claim 7) in which the frame assembly product constitutes all or part of an automobile space frame. According to this, for example, it is possible to provide an automobile space frame forming a structure of a vehicle body such as a passenger car or a wagon as a lightweight and stable joint having high strength.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 relates to a first extruded profile joining structure (claim 1) 10 according to the invention. As shown in FIG. 1 (A), an aluminum alloy (for example, JI
S: A6061-T6, A6063-T5, A6N01
-T5), and a pair of extruded profiles 1a and 1b having a rectangular cross section and having a pair of hollow portions 2 and 2 partitioned by a partition wall 3 along the longitudinal direction are arranged along each longitudinal direction. . Between the extruded shape members 1a and 1b, a pair of joint members 6 having a hollow portion 7 having a rectangular cross section is arranged along the facing hollow portions 2 and 2. The joint material 6 is also an extruded shape material made of the same aluminum alloy as described above, and the outer shape and the hollow portion 7 have a cross section that follows the inner shape of the hollow portion 2. The thickness of the joint material 6 is about 0.7 to 1.3 with respect to the thickness t of the extruded shape members 1a and 1b.
It is t thick.

As shown in FIG. 1 (B), a pair of joint materials 6 are half-inserted into the hollow portions 2 and 2 of one extruded shape member 1a and 1b, temporarily welded together, and then the other members are butted against each other. The extruded shape members 1a and 1b are individually inserted over a pair of hollow portions 2 and 2 communicating with each other in the longitudinal direction. In this state, MIG welding (joining) W is performed along the entire circumference between the end faces of the extruded shape members 1a and 1b that are butted against each other. As a result, as shown in FIGS. 1 (C) and 1 (D), the extruded profiles 1a and 1b are formed.
By forming the welding bead (welding part: joint part) W along the entire circumference between the end faces of the above and entering each joint material 6, the joint structure 10 of the extruded profile members 1a and 1b is obtained. According to such a joining structure 10, since the joint material 6 having the hollow portion 7 also serves as the backing material, the welding bead W can be easily formed, and the penetration depth at the time of welding can easily reach the joint material 6 and Later, the resistance to bending and torsional stress near the weld bead W also increases.

FIG. 2 relates to a second extruded profile joining structure (claim 2) 10a, 10b according to the present invention. As shown in FIG. 2 (A), a pair of extruded profile members 1a, 1b having a pair of hollow portions 2 made of the same aluminum alloy as described above and having a rectangular cross section and partitioned by a partition wall 3 along the longitudinal direction are formed in the longitudinal direction. Place along. Partition walls 3 of extruded shape members 1a and 1b
3, slits 4 and 4 are formed along the longitudinal direction from the center of the end face. As shown in FIGS. 2A and 2B, between the extruded shape members 1a and 1b, extruded shape members 1a and 1b are provided.
And hollow parts 7,7 following the inner shape of the hollow parts 2,2
A single joint member 6a having a substantially R-shaped cross-sectional shape, which is made up of square-shaped portions 6b and 6b each having a cross section and a web (connecting piece) 8 connecting these at the center, is arranged. Web 8 above
Has slits 9 and 9 of a required length at both ends in the longitudinal direction.
Are formed in advance.

As shown in FIG. 2C, the joint material 6a
Of the extruded profiles 1a and 1b, half of which are inserted into the hollows 2 and 2 of the extruded profiles 1a and 1b and temporarily welded together, and then the other extruded profiles 1a and 1b that are butted to each other communicate with each other along the longitudinal direction. , 2 to insert. At this time, the extruded shape members 1a, 1
b slits 4, 4 and joint material 6a slit 9,
9 and 9 are telescopically fitted together. In this state, MIG welding (joining) W is performed along the entire circumference between the end faces of the extruded shape members 1a and 1b that are butted against each other. As a result,
As shown in (C), a weld bead that extends along the entire circumference between the end faces of the extruded shape members 1a and 1b and also enters the joint member 6a.
By forming the (joint) W, the extruded shape members 1a, 1
The junction structure 10a of b is obtained. According to such a joining structure 10a, by inserting a single joint material 6a and performing welding W or the like, the penetration depth at the time of welding can be easily reached to the joint material 6a, and the welding can be performed after joining. The resistance to bending and twisting stress near the portion W is also increased. Moreover, each partition wall 3 of the extruded shape members 1a and 1b
In the state where the slits 9 of the joint material 6a enter the slits 4 provided at the ends of the joints 6 and are inserted into each other, the joints such as the welding W are applied.
In particular, the twist strength can be increased.

FIG. 2D shows a joint structure 10b having a different form.
In order to obtain the above, a state in which a pair of extruded profiles 1a, 1b having a rectangular cross section and having a pair of hollow portions 2 partitioned by a partition wall 3 along the longitudinal direction are arranged along the longitudinal direction in order to obtain Indicates. A pair of slits 4 and 4 are formed in the partition walls 3 and 3 of the extruded shape members 1a and 1b along the longitudinal direction from both ends (upper and lower ends) of the end face. As shown in FIG. 2 (D), the cross section of the extruded profiles 1a and 1b has a square cross section having an outer shape following the inner shape of the entire hollow portions 2 and 2 and a hollow portion 7. One joint material 6c is arranged. The dimension of the joint material 6c in the longitudinal direction is preset to be about twice the size of the slit 4.

As shown in FIG. 2 (E), the joint material 6c
Of the extruded profiles 1a and 1b, half of which are inserted into the hollows 2 and 2 of the extruded profiles 1a and 1b, and temporarily welded to each other. , 2 are inserted individually. At this time, extruded profile 1
The central portions (part) of the upper and lower horizontal pieces of the joint material 6c are inserted into the slits 4 and 4 of a and 1b. In this state, MIG welding (joining) W is performed along the entire circumference between the end faces of the extruded shape members 1a and 1b that are butted against each other. As a result, as shown in FIGS. 2 (E) and 2 (F), the extruded profiles 1a and 1b are formed.
By forming the weld bead (joint portion) W along the entire circumference between the end faces of the above and reaching the joint material 6c, the joined structure 10b of the extruded profiles 1a and 1b is obtained. Moreover,
The welded portion W is surely provided near the partition wall 3 of the extruded shape members 1a and 1b.
Is formed. Therefore, after joining, the resistance to bending and twisting stress in the vicinity of the welded portion W can be further increased.

FIG. 3 relates to a third extruded shape joining structure (claim 4) 18 according to the present invention. As shown in FIG. 3 (A), a pair of extruded profile members 1a, 1b having a pair of hollow portions 2 made of the same aluminum alloy as described above and having a rectangular cross section and partitioned by a partition wall 3 along the longitudinal direction are formed in the longitudinal direction. Place along. The end faces of the shape members 1a and 1b are diagonal sides 1 whose left and right opposite side faces are parallel to each other in plan view of FIG. 3 (A).
The inclinations of 2 and 14 are given in advance. Between the extruded profiles 1a and 1b, the hollow portions 2 and 2 facing each other are provided.
A pair of joint members 6 having a hollow section 7 and having a rectangular cross section are arranged along. The joint material 6 is also an extruded shape material made of the same aluminum alloy as described above, and the outer shape and the hollow portion 7 have a cross section that follows the inner shape of the hollow portion 2.

As shown in FIG. 3 (B), a pair of joint materials 6 and 6 are connected to the hollow portions 2 and 2 of one extruded shape material 1a and 1b.
After half-inserting into each of them and tack-welding each, they are individually inserted across the hollow portions 2 and 2 communicating with each other along the longitudinal direction of the other extruded shape members 1a and 1b that are butted. In such a state, the slanted sides 12, 1 of the extruded shape members 1a, 1b that are butted to each other
MIG welding along the entire circumference of joint 16 between end faces including 4
(Joining) Apply W. As a result, as shown in FIG. 3 (B), a weld bead (joint part) W is formed along the entire circumference of the joint 16 between the end faces of the extruded shape members 1a and 1b and also enters the joint members 6 and 6. As a result, the extruded shape members 1a and 1b
The joint structure 18 is obtained. According to such a joining structure 18, the joining portion by the welding W is relatively long along the joint 16 between the end faces including the oblique sides 12 and 14. Therefore, even if the tensile stress such that the extruded shape members 1a and 1b are separated from each other along the longitudinal direction, or the bending stress and the twist stress near the end face are repeatedly received, the welding (W) length is long,
It is possible to exert sufficient resistance to these. Therefore, the joining structure 18 with stable joining quality of the welded portion W is obtained.

FIG. 4 relates to a joint structure 19 which is an application form of the joint structure 18 shown in FIG. As shown in FIG. 4 (A),
A pair of extruded profiles 1a and 1b having a pair of hollow portions 2 made of the same aluminum alloy as described above and having a rectangular cross section and divided by a partition wall 3 along the longitudinal direction are arranged along the longitudinal direction. The end faces of the extruded shape members 1a and 1b have diagonal sides 12, which are parallel to each other in the plan view of FIG.
The upper surface and the lower surface which are vertically opposed to each other in the plan view 14 are provided with different inclinations (gradients) in the vertical direction and the horizontal direction in advance so that they are inclined sides 13 and 15 parallel to each other. Between the extruded shape members 1a and 1b, a pair of similar joint members 6 having a hollow portion 7 having a rectangular cross section is arranged along the facing hollow portions 2 and 2.

As shown in FIG. 4 (B), a pair of joint materials 6 and 6 are connected to the hollow portions 2 and 2 of one extruded profile 1a and 1b.
After half-inserting into each of them and tack-welding each, they are individually inserted across the hollow portions 2 and 2 communicating with each other along the longitudinal direction of the other extruded shape members 1a and 1b that are butted. In such a state, the slanted sides 12, 1 of the extruded shape members 1a, 1b that are butted to each other
MIG welding (joining) W is performed along the entire circumference of the joint between the end faces including 4. As a result, as shown in FIG. 4 (B), the welding bead (along the entire circumference between the end faces including the oblique sides 12 to 15 of the extruded shape members 1a and 1b) and also reaching the joint members 6 and 6 ( A joint portion) W is formed. As a result, the joint structure 19 of the extruded shape members 1a and 1b is obtained. According to the joint structure 19 as described above, the joint portion by the welding W is further lengthened along the space between the end faces including the diagonal sides 12 to 15,
Sufficient resistance can be exhibited even if tensile stress such that the extruded shape members 1a and 1b are separated from each other along the longitudinal direction, or bending stress and torsion stress near the end face are repeatedly applied. In the extruded profiles 1a and 1b used for the joining structures 18 and 19 shown in FIGS. 3 and 4, the partition wall 3 is omitted, and a single hollow portion without such a partition wall 3 can be fitted inside. It is also possible to use the joint material 6c.

FIG. 5 relates to a third joint structure (claim 4) 25 of a different form. As shown in FIG. 5 (A), a pair of extruded profiles 1a and 1b made of an aluminum alloy similar to the above and having a rectangular cross section and having a pair of hollow portions 2 partitioned by a partition wall 3 along the longitudinal direction are formed in the longitudinal direction. Place along. In the side view of FIG. 5A, the end faces of the shape members 1a and 1b have a vertical side 21 near the tip and a horizontal side 2 along the longitudinal direction.
3 and a stepped side 2 consisting of a vertical side 22 near the base
1 to 23. Between such extruded shape members 1a and 1b,
A pair of similar joint materials 6 having a hollow portion 7 having a rectangular cross section are individually arranged along the facing hollow portions 2 and 2. As shown in FIG. 5 (B), the pair of joint members 6 and 6 are connected to the hollow portions 2 and 2 of the extruded shape members 1a and 1b, respectively.
After half-inserting into each of them and tack-welding each, they are individually inserted across the hollow portions 2 and 2 communicating with each other along the longitudinal direction of the other extruded shape members 1a and 1b that are butted against each other. In this state, the MIG is formed along the entire circumference between the end faces including the stepwise sides 21 to 23 of the extruded shape members 1a and 1b that are butted against each other.
Weld (join) W is applied.

As a result, as shown in FIG. 5B, the extruded profile 1 is along the stepwise sides 21 to 23 in a side view and in a plan view.
A weld bead (joint portion) W is formed along the entire circumference between the end faces perpendicular to the longitudinal direction of a and 1b and reaches the joint members 6 and 6 to form a joint structure 25 of the extruded shape members 1a and 1b. Is obtained. According to such a joining structure 25, since a long stepwise joint is formed by the welding W along the end faces including the stepwise sides 21 to 23, it is possible to follow the longitudinal direction of the extruded profiles 1a and 1b. Sufficient resistance can be exerted even if tensile stress that causes separation is repeatedly applied or bending stress and torsion stress near the end face are repeatedly applied. In addition, in the extruded shape members 1a and 1b used for the joining structure 25 shown in FIG. 5, the partition wall 3 is omitted, and the single joint material that can be fitted in the entire single hollow portion without the partition wall 3 It is also possible to use 6c.

As shown in FIG. 6 (A), the end faces of the extruded shape members 1a and 1b similar to the above have short vertical sides 27 and 29 in side view.
And stepwise sides 27 to 29 composed of slanted sides 28 located between them. Any shape 1 in advance
In the hollow portions 2 and 2 of a and 1b, the same joint material 6,
6 is inserted about half and is temporarily welded, and as shown in FIG. 6 (A), the extruded shape members 1a and 1b are abutted with each other along the longitudinal direction, and end faces including stepped sides 27 to 29. Weld (join) W along the gap. As a result, the stepped side 27-
The joint structure 26 by the welded portion W including 29 is obtained. As shown in FIG. 6 (B), the end faces of the extruded shape members 1a and 1b similar to the above have a step-like shape composed of short oblique sides 31 and 32 in a side view and long horizontal sides 33 located between them. Side 3
1 to 33. In advance, either one of the shape members 1a, 1
After half the joint materials 6 and 6 similar to the above are inserted into the hollow portions 2 and 2 of b and temporarily welded, as shown in FIG. 6 (B), the extruded shape members 1a and 1b are arranged along the longitudinal direction. In the abutted state, welding (joining) W is performed along the end faces including the stepwise sides 31 to 33. As a result, the joint structure 30 by the welded portion W including the stepwise sides 31 to 33 is obtained.

As shown in FIG. 6C, the end faces of the extruded shape members 1a and 1b similar to the above have short oblique sides 35 and 3 in side view.
7 and stepwise sides 35 to 37 composed of long diagonal sides 36 located between them. After inserting about half of the joint materials 6 and 6 similar to the above into the hollow portions 2 and 2 of one of the shape members 1a and 1b and performing tack welding in advance, as shown in FIG. Welding (joining) W is performed along the end faces including the stepped sides 35 to 37 in a state in which 1a and 1b are butted against each other in the longitudinal direction. As a result, the joint structure 34 by the welded portion W including the stepwise sides 35 to 37 is obtained. The joining structures 25, 26 shown in FIGS.
The end faces of the extruded shape members 1a and 1b forming the members 30 and 34 may have the same stepwise sides even in a plan view, and the adjacent sides may be projected or recessed in the longitudinal direction.
This makes it possible to further lengthen the welded portion W and form a joint structure having high joint strength.

FIG. 7 shows the joint structure 18 shown in FIG.
The present invention relates to a frame assembly product (claim 6) 50 of the present invention. As shown in FIG. 7A, two sets of frame units 40 and 44 are prepared in advance. The frame unit 40 located at the upper side in FIG. 7 (A) has the same extruded shape members 1a, 1 as described above.
The ceiling part 41 composed of b and both ends (both sides) of the horizontal part 41
Extruded profile 1 which is joined to the pipe and extends diagonally downward and symmetrically
and a pair of pillar portions 42 and 43 formed of a and 1b.
As shown in FIG. 7A, the pillar portions 42 and 43 are arranged in advance toward the mating frame unit 44 in a substantially C-shaped divergent shape.

As shown in FIG.
As shown in (A), the diagonal sides 12 are formed inwardly and symmetrically, and the pair of joint members 6 and 6 are inserted into the hollow portions 2 and 2 by about half. It is tack welded in the state. As shown on the left side in FIG. 7 (A), each joint member 6 is swallowed deeply at a distance L1 toward the outer side of the pillar portions 42, 43 and a distance L2 from the end face thereof.
And a short distance L3 toward the inner side of the pillar portions 42 and 43, and a long distance L4 from the end face thereof. Distance L4 on the inner side of the relevant pillars 42, 43
Each of the joint members 6 that protrudes for a long time is swallowed deeply inside the pair of opposed extruded shape members of the frame unit 44 described below.

On the other hand, the frame unit 44 located at the lower side in FIG. 7 (A) is joined to both ends of the deck portion 45 composed of the extruded shape members 1a and 1b similar to the above, and is slightly inclined upward. Extending symmetrically and extruded profile 1a,
It has a pair of corner portions 46 and 48 made of 1b.
On the end faces of the upper ends of the corner portions 46 and 48, the diagonal sides 14 are formed symmetrically in an outwardly facing posture, and the hollow portions 2 and 2 and the partition wall 3 are diagonally exposed. In addition, the diagonal sides 14 on the end faces of the upper ends of the corner portions 46 and 48 are the pillar portions 42 of the facing frame unit 40,
It is parallel to the diagonal side 12 of 43 and has point symmetry.

The joint members 6 and 6 projecting from the lower ends of the column portions 42 and 43 of the frame unit 40 are inserted into the hollow portions 2 and 2 which are opened at the upper end surfaces of the corner portions 46 and 48 of the frame unit 44. At this time, the column portions 42 and 43 of the frame unit 40 are elastically deformed so that the lower end portions thereof are slightly closer to each other. As a result, as shown in FIG.
The diagonal sides 12 of the column portions 42, 43 of the frame unit 40 and the diagonal sides 14 of the corner portions 46, 48 of the frame unit 44 are in surface contact with each other, and the column portion 42
The corner portion 46 and the pillar portion 43 and the corner portion 48 are butted against each other. In this state, MIG welding (joining) W is performed along the entire circumference between the end faces of the left and right column portions 42, 43 and the corner portions 46, 48 including the diagonal sides 12, 14. As a result, as shown in FIG. 7 (B), the entire structure including the frame units 40 and 44 via the joint structure 18 in which the left and right column portions 42 and 43 and the corner portions 46 and 48 are joined by the welding W. A frame assembly product 50 having a substantially trapezoidal shape is obtained.

According to the assembled product 50, the frame units 40 and 44 composed of a plurality of extruded profile members 1a and 1b are
The joining work can be performed in a state where the joining can be performed easily. Therefore, the frame assembly product 50 can be manufactured accurately and efficiently with a small number of steps. The frame unit 4
0 are formed on the lower end surfaces of the column portions 42 and 43 and the upper end surfaces of the corner portions 46 and 48 of the frame unit 44, and the joint material 6 is formed on the joint member 6 at the corner portions 46. , 48 may be tack welded first. In addition, the lower end surfaces of the pillar portions 42 and 43 of the frame unit 40 and the corner portions 46 and 48 of the frame unit 44.
The upper end surface of each of the slanted sides 12 to 15 having different inclinations shown in FIG. 4 or the stepwise sides 21 to 23 shown in FIGS. It is also possible to provide them in a posture and join them.

FIG. 8 shows a state immediately before the automobile space frame 72 is manufactured. As shown in FIG. 8, three sets of units including a deck frame unit 52, a front frame unit 60, and a rear frame unit 65 are prepared in advance. As shown in FIG. 8, the deck frame unit 52 includes front and rear frames 53, 53 and side frames 55, 55 made of the same extruded shape members 1a, 1b and four vertical corner frames 56, 58. They are joined together via a rectangular frame in plan view. On the upper end surface of each corner frame 56, 58, a pair of front and rear slanted sides 14 are formed outwardly and symmetrically, and the hollow portions 2, 2 and the partition wall 3 are diagonally exposed. .

Further, as shown in FIG. 8, the front frame unit 60 is made of the extruded shape members 1a and 1b similar to the above, and has a horizontally gently curved front frame 63, a roof frame 64, and left and right ends thereof. It is composed of a pair of left and right diagonal frames 62, 62 which are joined and curved obliquely in the front-rear direction. A pair of front and rear diagonal sides 12 are formed on the lower end surface of each diagonal frame 62 in an inward posture and symmetrically, and a pair of upper and lower diagonal sides 14 is formed on the upper end surface of each diagonal frame 62. It is formed in an oriented posture and symmetrically. Further, as shown in FIG. 8, the rear frame unit 65 includes a horizontal rear roof frame 70 made of extruded profiles 1a and 1b, and a pair of side roofs symmetrically joined to both ends of the roof frame 70 and including diagonal portions 68. Frames 69, 69 and a pair of side frames 67, 67 joined to the lower ends of the roof frames 69 and including a horizontal portion 66. A pair of upper and lower diagonal sides 12 are formed inwardly and horizontally symmetrically on the end surface of each side roof frame 69 on the leading end side (close to the front), and a pair of front and rear sides is formed on the lower end surface of each side frame 67. The diagonal side 12 is formed in an inward posture and symmetrically.

As shown in FIG. 8, the diagonal side 14 at the upper end of each diagonal frame 62 in the front frame unit 60 and the diagonal side 12 at the tip of each roof frame 69 in the rear frame unit 65 are opposed to each other. Further, the diagonal side 12 at the lower end of each diagonal frame 62 in the front frame unit 60, the diagonal side 12 at the lower end of each side frame 67 in the rear frame unit 65, and the upper ends of the corner frames 56, 58 at the four corners of the deck frame unit 52. The diagonal side 14 of the is opposed. Prior to these, at the tip side of each side roof frame 69 having each of the above diagonal sides 12, the lower end of each diagonal frame 62, and the lower end of each side frame 67 in advance,
About half of the joint material 6 is inserted into the exposed hollow portions 2 and 2 and temporarily welded.

First, the diagonal side 14 at the upper end of each diagonal frame 62 of the front frame unit 60 and the rear frame unit 6
5, the side edges of the side roof frames 69 and the diagonal sides 12 of the side roof frames 69 are brought into surface contact with each other, and the joint members 6 are fitted inside and abutted. In this state, MIG welding (joining) W is performed along the entire circumference between the end faces of the oblique frames 62 and the side roof frames 69 including the oblique sides 12 and 14. As a result, as shown in FIG. 9, the front frame unit 60 and the rear frame unit 65 are joined to each other by the pair of left and right joining structures 18 having the diagonal welded portions W. Next, the diagonal side 12 at the lower end of each diagonal frame 62 in the front frame unit 60 and the diagonal side 14 at the upper end of each corner frame 56 at both ends of the front frame 53 in the deck frame unit 52 are brought into surface contact, and the joint material 6 is fitted inside. And match. Further, the diagonal side 12 at the lower end of each side frame 67 in the rear frame unit 65 and the deck frame unit 52
The surface of each of the corner frames 58 at both ends of the rear frame 53 at the upper end of the diagonal side 14 is brought into surface contact, and the joint material 6 is fitted inside to bring them into a butted state.

In the above state, the diagonal side 1 at the lower end of the diagonal frame 62
2 and the diagonal side 12 at the lower end of each side frame 67 and the diagonal side 12 at the upper end of each corner frame 56, 58,
MIG welding (joining) W along the entire circumference between the end faces including 14
Are applied individually. As a result, as shown in FIG. 9, the deck frame unit 52, the front frame unit 60,
Further, the rear frame unit 65 is integrally joined via the joining structure 18 to form the vehicle space frame 72 which is a frame assembly product of the present invention. The space frame 72 for an automobile as described above has three sets of the frame units 52, 60, 6 prepared by joining lightweight aluminum alloy extruded profiles 1a, 1b in advance by welding W or the like.
5 is welded between end faces including sides 12 and 14 which are oblique to each other.
Are integrally assembled via the joint structure 18 formed by. Therefore, the interior part (structure of the car body) of a passenger car,
It becomes easy to construct as a lightweight and stable one with high joint strength. The frame units 52, 60,
It is also possible to form the space frame 72 by joining 65 to each other through the joining structure 25 formed by the welding W between the end faces including the stepwise sides 21 to 23 and the like.

The present invention is not limited to each of the forms described above. For example, the joint structure 10,
The extruded shape member having a plurality of hollow portions due to the partition wall used for 10a and 10b is not limited to the cross-sectional shape of the above "Sun",
The shape of the cross section of a "field", the cross section having a partition wall along the diagonal line in "□", the cross section shape having a T-shaped partition wall in "□", or a circular cross section Also included is a pipe-like configuration with partition walls generally along one or more diameters therethrough. In addition, the joint structure 18, 1
The extruded profile used for 9, 25, etc. includes not only the above-mentioned forms but also forms having a sectional shape such as a circle without a partition wall, an ellipse, and an oval. According to these, a joint material having a shape including an outer shape such as a circular cross section, an elliptical shape, and an oval shape is used. Further, the joint structure 10, 18
Not only the MIG welding but also TI
Using G welding, laser welding, or friction stir welding,
Alternatively, MIG welding, TIG welding, laser welding, or friction stir welding may be selectively used for each of a plurality of welding points in the vehicle space frame 72. Further, the joint material is not limited to the extruded shape, and may be a precision cast product of an aluminum alloy in which both ends in the longitudinal direction are slightly tapered.

[0041]

According to the first extruded shape joining structure (Claim 1) according to the present invention described above, for example, the penetration depth at the time of welding easily reaches the joint material. Resistance to bending and torsional stress near the joint is increased. Moreover, the material of the joint material can be saved, and the weight in the vicinity of the joint can be reduced. Further, according to the second extruded shape joining structure (claim 2), the penetration depth at the time of welding easily reaches the joint material by inserting a single joint material and joining them by welding or the like. Therefore, it is possible to further increase the resistance to bending and twisting stress near the joint after joining. In particular, in the form in which a part of the joint material is arranged at the end portion of the partition wall of the extruded shape member, reliable joint strength can be obtained over the entire circumference of the joint portion. Furthermore,
According to the joining structure of claim 3, since the extruded shape member and the joint member to be joined are engaged with each other through the slit,
The torsional strength near the joint can be enhanced.

Further, according to the third extruded profile joining structure (claim 4), a step-like side is formed between the end faces of the oblique sides and parallel and orthogonal to the longitudinal direction of the pair of extruded profiles. A joint portion such as a welded portion is formed relatively long along the space between the end faces of the. Therefore, it is possible to obtain a considerable resistance force even when repeatedly subjected to tensile stress such as separation along the longitudinal direction of the pair of extruded shape members, or bending stress or torsion stress near the end face, A joining structure with stable joining quality such as welding can be obtained. On the other hand, according to the frame assembly product of the present invention (Claim 6), by slightly elastically deforming the vicinity of each joint material of one frame unit in which the joint material is inserted in advance, the other frame unit faces each other. It can be easily inserted into the hollow portion of the extruded profile. With this, the plurality of frame units can be easily joined to each other so that the joining work can be performed, so that the frame assembly product can be manufactured accurately and efficiently.

[Brief description of drawings]

FIG. 1A is a perspective view showing an extruded shape member and a joint material used in a first joint structure of the present invention, and FIGS. 1B and 1C are side views or sectional views showing the first joint structure. , (D) is D in (C)
-A sectional view at a viewing angle along line D.

2A and 2D are perspective views showing an extruded shape member and a joint material used in the second joint structure of the present invention, and FIG. 2B is a plan view of the joint material shown in FIG. (C), (E) is sectional drawing which shows a 2nd junction structure, (F) is sectional drawing in the viewing angle along the FF line in (E).

FIG. 3A is a perspective view showing an extruded shape member and a joint material used in a third joint structure of the present invention, and FIG. 3B is a sectional view showing the third joint structure obtained thereby.

FIG. 4A is a perspective view showing an extruded shape member and a joint material used for a third joint structure of a different mode, and FIG. 4B is a perspective view showing the third joint structure obtained by the above.

FIG. 5A is a perspective view showing an extruded shape member and a joint material used for a third joint structure of a further different form, and FIG. 5B is a perspective view showing the third joint structure thus obtained.

6A to 6C are schematic views showing a third joint structure of different modes.

7 (A) and 7 (B) are schematic views showing a frame assembled product of the present invention before and after assembling.

FIG. 8 is a schematic diagram showing a state before assembly of the automobile space frame.

FIG. 9 is a schematic view showing an automobile space frame of the present invention.

[Explanation of symbols]

1a, 1b …………………………………………………………
Extruded shape 2,7 …………………………………………………………
Hollow part 3 ……………………………………………………………………
Partition walls 4, 9 ………………………………………………………………
Slits 6, 6a, 6c ……………………………………………………
Joint materials 10, 10a, 10b, 18, 19, 25, 26, 30, 34 ...
Joining structure 12-15 …………………………………………………………
Diagonal sides 21-23, 27-29, 31-33, 35-37 ...
Step-shaped sides 40,44,52,60,65 ………………………………………………
Frame unit 50 …………………………………………………………………………
Frame assembly product 72 …………………………………… Space frame for automobile (frame assembly product) W ………………………………………………………………
Welding (joining)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B62D 25/00 B62D 25/00 F16B 7/00 F16B 7/00 Z // B23K 103: 10 B23K 103: 10 (72) Inventor Mitsuo Tsuge 1-34-1, Kambara, Kambara-cho, Awara-gun, Shizuoka Nihon Metal Co., Ltd. Group Technology Center (72) Instructor Hino Hino, 1-chome, Kambara-cho, Anbara-gun, Shizuoka Group Technical Center Co., Ltd. F term (reference) 3D003 AA01 AA04 BB02 CA09 CA17 CA32 CA40 CA48 3J039 AA01 BB03 LA02 4E001 AA03 BB07 BB08 CB01 DG02

Claims (7)

[Claims] 1. A pair of extruded profile members made of an aluminum alloy and having a plurality of hollow portions partitioned by a partition wall along the longitudinal direction, and a pair of extruded profile members abutting each other along the longitudinal direction of each extruded profile member. A plurality of joint members made of an aluminum alloy having an outer shape and a hollow portion that follow the inner shape of the hollow portion are individually inserted for each of the plurality of hollow portions that communicate with each other across the pair of extruded shape members. At the same time, the pair of extruded profile members that are abutted to each other are joined along the space between the end faces of the two. 2. A pair of extruded profiles made of an aluminum alloy and having a plurality of hollow portions partitioned by a partition wall along the longitudinal direction are abutted at their end faces along the longitudinal direction of each extruded profile. In the plurality of hollow portions communicating across the pair of extruded profile members,
A single joint material made of an aluminum alloy having an outer shape following the inner shape of these hollow portions and one or more hollow portions is inserted, and the pair of extruded shape members abutted with each other are between the end faces of both. A joint structure of extruded profiles, characterized by being joined along. 3. A part of the single joint material or a slit provided in the joint material is inserted into a slit provided along a longitudinal direction in a partition wall of the pair of extruded shape members. The joined structure for extruded profiles according to claim 2, which is characterized in that. 4. A pair of extruded profiles made of an aluminum alloy and having one or more hollow portions along the longitudinal direction,
Each end face is abutted along the longitudinal direction of each extruded profile, and in the hollow portion that communicates over the pair of extruded profiles, the aluminum alloy has an outer shape that follows the inner shape of the hollow portion. A joint material is inserted, and at least a pair of sides facing each other in the end faces of the pair of extruded profiles is a side oblique to the longitudinal direction of the extruded profile,
A stepped side that is parallel and orthogonal to the longitudinal direction of the extruded profile, or a side that is stepwise and partially includes an oblique side, and the pair of extruded profiles that are butted are between the end faces of both. A joint structure of extruded profiles, characterized in that they are joined along. 5. The extruded shape joint structure according to claim 1, wherein the joint is any one of MIG, TIG, laser welding, and friction stir welding. . 6. A frame assembly product obtained by joining at least two sets of frame units having the pair of extruded profile members on both sides by using the joining structure according to claim 4 or 5, wherein one frame The pair of extruded profile members in the unit are arranged in a divergent manner toward the other frame unit, and the end faces thereof include the oblique side or the stepped side, and the end faces of the pair of extruded profile members in the other frame unit. Includes an oblique side or a stepped side that is symmetrical to the end face side of the pair of extruded profile members in the one frame unit, and the end portions of the pair of extruded profile members in either of the two frame units. While the joint material is being inserted into each of the other frame units, the end surfaces of a pair of extruded profile members facing each other in the other frame unit are individually butted and the joint structure is used. Are respectively bonded, a frame assembled products, characterized in that. 7. The frame assembly product according to claim 6, wherein the frame assembly product constitutes all or part of an automobile space frame.