JPH09268700A - Hollow structure body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beautifully integrated structure body which is easily joined and fixed and whose fastening part is not exposed outside even after it is joined and fixed in a hollow structure body by joining a pair of first plate- like materials by an aluminium allay extruded section to form upper and lower surfaces and a pair of second plate-like materials by an aluminium alloy material to form side surfaces. SOLUTION: Calking parts 3 composed of a calking piece 3a and a calking receiving piece 3b which is formed outside so as to be opposed to the calking piece 3a and has a receiving groove 4 so as to face the claking piece side, are formed in width directional both end parts of first plate-like materials (upper and lower members) 1A and 1B in a vertically projecting condition or a nonprojecting condition, and preferably, the upper end lower ends of second plate-like materials (left and right side surface plate materials) 2A and 2B by a corrugated plate are fitted to and inserted into these calking parts 3, and the calking piece 3a and the second plate-like materials 2A and 2B are integrally calked in the receiving groove 4 by a press of a calking edge such as a punch from the inside direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow structure having a rectangular cross section which can be used for a beam or column of a carport, a pouch or the like, or a tubular structure such as a duct.

[0002]

2. Description of the Related Art It is known from U.S. Pat. No. 4,713,924, etc., to form a lightweight and strong hollow structure having a rectangular or rectangular cross section by using an aluminum alloy material.

For example, a known hollow structure F shown in FIG. 10 is an upper member 40 made of an extruded aluminum alloy material.
A and the lower member 40B are formed by joining the left side surface member 41A and the right side surface member 41B, which are also made of a corrugated sheet of aluminum alloy, and caulking means is used as the joining method.
Forming a caulking portion 42 extending in the longitudinal direction at both widthwise end portions of the upper and lower members 40A, 40B, the caulking portion 42 is made to sandwich the upper and lower ends of the left and right side members 41A, 41B, and by caulking from the outside direction. It is an integrated one.

Further, as a method of joining such hollow structures, as in the hollow structure G shown in FIG.
4 is provided with a sandwiching portion 44a having sandwiching pieces a, and the sandwiching portion 44a sandwiches the upper and lower ends of the left and right side members 45,
The left and right side members 4 are pressed by pressing the holding piece a with the pressing roller 46.
A pinching means for pinching and fixing 5 is also used.

[0005]

However, although the caulking process can be efficiently performed with a relatively simple equipment, as shown in FIG. 10, the caulking portion 43 after the caulking process is remarkable from the outside. Since it is visually observed, there may be a problem in terms of aesthetics, appearance and finish. Further, regarding the clamping means, the left and right side members 45 shown in FIG. 11 are held in close contact with the clamping part 44a of the upper and lower members 44. Therefore, there is a problem that a complicated processing step such as a process for matching the shapes of the sandwiching portion 44a and the upper and lower end portions of the left and right side members 45 is required.

In view of such a situation, the present invention provides a hollow structure which is easy to join and fix members, and which is beautifully integrated without significant exposure of the caulking portion even after joining. For the purpose of provision.

[0007]

In order to achieve the above-mentioned object, the present invention is to bend a rolled metal plate such as an aluminum alloy extruded material or an aluminum alloy or an iron plate which forms upper and lower surfaces by roll forming or the like. A pair of first
A plate-like material and a pair of second plate-like materials made of aluminum alloy rolled material or aluminum alloy extruded material or other metal material forming a side surface, which is a hollow structure,
At both ends of the first plate-shaped member in the width direction, there are caulking portions formed of caulking pieces and caulking receiving pieces that are formed on the outside so as to face the caulking pieces and that have a receiving groove facing the side of the caulking pieces. A hollow formed by inserting the upper and lower ends of the second plate-shaped member into the caulked portion and caulking the second plate-shaped body into the receiving groove by pressing the caulking blade from the inside. And a hollow structure in which the caulking portion is formed in a vertically protruding state outside a hollow space constituted by the first plate-shaped member and the second plate-shaped member, The caulking portion has a hollow structure formed without protruding outside a hollow space formed by the first plate-shaped material and the second plate-shaped material, and further, the second structure. The plate-like material proposes a hollow structure which is a corrugated plate. Then, a hollow structure in which the first plate-shaped material is made of an aluminum alloy extruded material and a hollow structure in which the second plate-shaped material is made of rolled aluminum material are proposed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The caulking portion composed of a caulking piece formed in a thin portion and a caulking receiving piece formed in a thick portion of a first plate-shaped member (upper and lower members) is used for an aluminum alloy extrusion molding process or the like. Is formed by. The upper and lower ends of the pair of left and right second plate members (left and right side plate members) are fitted into the caulked portions of the pair of upper and lower first plate members to form a hollow structure, which is located inside the caulked portion. By arranging the caulking blade with a drive mechanism inward facing the caulking piece, and arranging the caulking receiving die outward facing the caulking receiving piece, by advancing the caulking blade and pressing the caulking piece, The second plate-shaped material fitted and inserted together with the caulking piece can be caulked into the receiving groove of the caulking receiving piece. The caulking process is performed by sequentially moving the locations in the longitudinal direction of the hollow structure to form an integral hollow structure. The caulking portion is formed on the inner side and is hard to be visually recognized from the outside, and thus has good appearance.

When the caulking portion is provided so as to protrude from the outside of the hollow space, the caulking blade and the caulking receiving type are relatively easy to dispose, the inner surface of the hollow space is smooth, and the inside or the plate of the hollow space is flat. Since the one provided along the shape member has a good fit without a protruding portion, there are few restrictions in the case of installation and the appearance is further excellent. Furthermore, when the second plate-shaped member is formed of a corrugated plate in the longitudinal direction, a hollow structure having high bending rigidity and high strength can be obtained. The first plate-shaped material formed of an aluminum alloy extruded material enables free shape design and weight reduction, and the second plate-shaped material formed of an aluminum alloy rolled material has high productivity. Good and light weight can be promoted.

[0010]

The hollow structure of the present invention will be described below with reference to the drawings. This hollow structure A seen in the perspective view of FIG.
Is a combination of an upper member 1A and a lower member 1B made of an extruded aluminum alloy, and a left side plate 2A and a right side plate 2B made of rolled aluminum alloy. As the left and right side plate members, corrugated plates having a high strength formed in a corrugated shape in the longitudinal direction are used. That is, each of the upper and lower members 1A and 1B is provided with a caulking portion 3 composed of a caulking piece 3a at both ends in the width direction and a caulking receiving piece 3b having a receiving groove 4 in the longitudinal direction.
The upper and lower end portions of the left and right side surface plate members 2A and 2B are fitted between a and the caulking receiving piece 3b, and the left and right side surface plate materials 2A and 2B are received together with the caulking piece 3a by caulking from the inside.
Since the caulking portion 3A is located in the hollow space 5, the caulking portion 3A has a simple appearance and is formed with a high-strength hollow structure A.

The construction method will be further described with reference to FIG.
As shown in (a), a pair of upper and lower members 1A and 1B made of an aluminum alloy extruded shape member are vertically opposed to each other, and the caulking portion 3 has a caulking piece 3a on the inside and a caulking receiving piece 3b on the outside. However, the gap is opened in the vertically opposite direction. When the upper and lower members 1A and 1B are extrusion-molded, the gap between the caulking pieces 3a into which the left and right side plate members 2A and 2B are fitted and the caulking receiving piece 3b are formed so that the opening side is widened. Easy to assemble.
The caulking receiving piece 3b is formed with a receiving groove 4 facing the caulking piece 3a side and extending in the longitudinal direction. Therefore, by inserting the upper and lower ends of the left and right side plate members 2A and 2B into the gaps of the caulking portion 3, it is possible to form the hollow structure A having a rectangular cross section having the hollow space 5, and caulking from the inside in the direction of the arrow in the drawing. Can be integrated by The hollow structure B of (b) is different from the case of (a) in that the upper and lower members 6A, 6B have screw holes 9 close to the crimped portions 8 at both ends, but the hollow structure B is received as the crimped pieces 8a. Caulking receiving piece 8 provided with groove 10
Structure of the caulking portion 8 made of b and right and left side plate members 7A, 7B
For combination with and caulking from the inside,
This is the same as the case (a). The screw hole 9 is useful for screwing in a tapping screw when connecting a lid or other member to the end of the hollow structure B.

The hollow structure C shown in FIG.
Caulking portions 13 are formed on both ends of 1A and 11B so as to project outward in the vertical direction. In the caulking portion 13, the caulking piece 13a formed by the thin portion is raised following the flat portions of the upper and lower members 11A and 11B, and the caulking receiving piece 13b formed by the thick portion is formed in a folded shape. That is, the caulking piece 13a located on the inner side and the caulking receiving piece 13b located on the outer side having the receiving groove 14 are opposed to each other with a gap, and the opening of the gap is opposed to the upper and lower members. is there. The left and right side members 12A, 12A are provided in the spaces between the caulking portions 13 formed so as to project from the hollow space 15 to the outside.
The hollow structure C having a rectangular cross section can be formed by inserting the upper and lower ends of 12B, respectively, and can be integrated by caulking from the inside in the direction of the arrow in the figure.

The upper and lower members 16A and 16B in the hollow structure D of FIG. 3 (b) are provided with screw holes 21 in the vicinity of the crimped portions 18 at both ends so that they can be used for connection with other members. Although it differs from the above-described case (a) in the point, the caulking piece 18a and the receiving groove 19 by the thin portion are formed.
The caulking portion 18 including a caulking receiving piece 18b having a thick portion is formed in a protruding state from a hollow space 20 constituted by the upper and lower members 16A and 16B and the left and right side plate members 17A and 17B. The point that they can be integrated by caulking from the inside in the direction of the arrow is the same as in the case of (a).

The case of FIG. 2A will be further described with reference to the partial enlarged views shown in FIGS. 4A and 4B.
A caulking portion 3 is formed at the right end of the upper member 1A, and the caulking portion 3 is formed by bending the caulking portion 3a on the inner side and the caulking receiving piece 3b having the receiving groove 4 on the outer side in parallel with each other so as to bend in the vertical direction. The right side surface plate member 2B is inserted into a gap provided between the caulking piece 3a and the caulking receiving piece 3b.

In the crimping process, the punch 22 as a crimping blade having a driving mechanism such as a hydraulic cylinder is inserted into the hollow space 5 in a cantilevered state so as to face the crimping piece 3a and to receive the crimping groove 4 of the crimping receiving piece 3b. At the height position, the caulking receiving die 23 is arranged so as to face the valley portion of the wave of the right side plate 2B that has been fitted, and outside the hollow space 5, the caulking receiving die 23 is arranged in contact with the outer surface of the caulking receiving piece 3b. Be seen. In this state, the punch 22 is moved forward to press the caulking piece 3a, thereby pressing the caulking piece 3a as shown in FIGS. 5 (a) and 5 (b).
It is possible to caulk the groove 4 with the a and the right side plate member 2B. This caulking process is performed while moving the punch 22 in the hollow space 5 in the longitudinal direction and at the same time.
In contrast, the caulking receiving die 23 is moved so as to respond to it, so that the caulking receiving die 23 can be continuously operated. In the case of caulking the corrugated plate, a higher caulking portion strength can be secured by performing the caulking at the position where the valley of the wave is on the receiving groove 4 side.

The above-mentioned configuration of the caulking portion is the same for the left end portion of the upper member and the left and right end portions of the lower member, which are not shown,
A hollow structure in which the upper and lower members and the left and right side plate members are integrated is formed by simultaneous caulking at four locations. In this hollow structure, since the caulking portion is formed in the hollow space, it is not visible from the outside.

The caulking portion 1 shown in FIGS. 3 (a) and 3 (b).
With respect to the hollow structures C and D in which the protrusions 3 and 18 are formed, a caulking blade with a drive mechanism is arranged inside the caulking portion, and a caulking receiving die is arranged outside to advance the caulking blade. As a result, the caulking portion can be formed on the inside, which is difficult to see from the outside.

An embodiment of an apparatus for assembling a hollow structure according to the present invention in which caulking is performed from the inside will be described with reference to FIGS. 6 to 9. As shown in the side view of FIG.
A frame-shaped stand 2 having a caulking mechanism section on the base 24 of A
5, the upper member 26A and the lower member 26B made of an aluminum alloy extruded shape member are loaded in a state of facing left and right, and the left side plate member 27A and the right side plate member 27B made of an aluminum alloy rolled plate member are loaded in a state of vertically facing each other and further guided. By the mechanism, the left and right side plate members 27A and 27B are fitted into the caulked portions 28 of the upper and lower members 26A and 26B to be combined with the hollow structure E having a rectangular cross section and inserted into the frame-shaped mount 25. is there.

That is, as shown in the front sectional view of FIG. 7 taken along the line VII-VII of FIG. 6, left and right side plate members 27A, 27B.
Is supplied from the right side in the drawing toward the left side toward the frame-shaped mount 25 provided with the caulking mechanism portion by the plate material supply devices 29A and 29B by the rewinding mechanism of the rollers arranged in the upper and lower parts of the assembling device AA, and also in the vertical direction. As shown in the plan view of FIG. 9, the members 26A and 26B are supplied by the guide roller mechanism 30 from the right side toward the left side toward the frame-shaped mount 25 side,
As described above, the hollow structure E is combined and inserted into the frame-shaped frame 25. As shown in FIG. 6 and FIG. 8, hydraulic cylinders 31A, 31B, 31C, 31D are attached to the frame-shaped frame 25 at four positions, up, down, left and right, respectively.
Pressing dies 32A and 32B for pressing the flat portions of the upper and lower members 26A and 26B are attached to the piston rods of the hydraulic cylinders 31C and 31D on the left and right side surfaces, and the caulking portion 28 is attached to the piston rods of the hydraulic cylinders 31A and 31B on the upper and lower side surfaces. Caulking receiving die 33 that presses the outside of the
A and 33B are attached.

Further, the base end is placed inside the hollow structure E, which is assembled by the upper and lower members 26A, 26B and the left and right side plate members 27A, 27B and is located in the frame-shaped frame 25 (see FIG. 7). The cantilevered beam 35 supported by (FIG. 9) is inserted and held, and the cantilevered beam 35 has a pair of upper and lower parts facing outward, that is, the right side plate 27B and the left side plate 27A. Hydraulic cylinder 3
6A and 36B are attached to the hydraulic cylinders 36A and 3B.
The 6B piston rod has a horizontal punch holder 3
7A and 37B are attached to the punch holders 37A and 37B so that the punch holders 37A and 37B can be moved in the vertical direction. The punch holders 37A and 37B are provided with caulking punches 38 at positions corresponding to the caulking pieces of the caulking portions 28 of the upper and lower members 26A and 26B. Is provided.

The hollow structure E which moves by combining the upper and lower members 26A and 26B and the left and right side plate members 27A and 27B is moved by the left and right pressing dies 32A and 32B at a predetermined position of the frame-shaped mount 25. , 26B
Is lightly pressed to the left and right side plate members 27A and 27B so that the combined state of the upper and lower members 26A and 26B and the left and right side plate members 27A and 27B can be secured, and the upper and lower crimping receiving dies 33A and 33B are crimped. The hydraulic cylinders 36A and 3A attached to the beam 35 are designed to come into contact with the surface of the caulking receiving piece to perform a backup action.
By driving the 6B, the upper and lower punch holders 37A, 37B are moved forward, and the caulking punch 38 presses the caulking portion 28, whereby the left and right side plate members 27A, 27B are caulked to the upper and lower members 26A, 26B. Two
8 can be fixed. Then, with the forward movement of the hollow structure E, the above-described caulking process is repeated, so that the upper and lower members 26A and 26B are continuously caulked.
The left and right side plate members 27A and 27B are fixedly integrated with each other.

[0022]

As is apparent from the above description, according to the present invention, as the caulking portion of the first plate-shaped member, the caulking piece on the side to be caulked is located inside, and the caulking is provided with the receiving groove. Since the caulking receiving piece receiving the attachment is located outside, and the constituent members are integrated by caulking to form a hollow structure,
A hollow structure having high strength can be obtained by processing with a relatively simple structure and equipment, and the caulking portion is not visually observed and has good appearance. Furthermore, if the first plate-shaped material or the second plate-shaped material is made of an aluminum alloy, the weight is reduced.

Further, in the case where the caulking portion is provided outside the hollow space in a projecting manner, the caulking equipment can be set relatively easily,
In addition, it has the advantage of being able to use a hollow space such as a duct, and the caulking part does not project outside the hollow space, and the shape formed inside the hollow space or along the components does not fit the shape. The effect is that it is convenient for handling and the like. Further, the second plate-shaped member that constitutes the left and right side surfaces is formed of a corrugated plate, which has the effect of obtaining a hollow structure having higher bending rigidity and higher strength.

[Brief description of drawings]

FIG. 1 is a perspective view of a hollow structure according to the present invention.

2 (a) is a vertical cross-sectional view of the hollow structure shown in FIG.
(B) is a longitudinal cross-sectional view of the equivalent hollow structure (a) having a screw hole.

FIG. 3A is a vertical cross-sectional view of a hollow structure according to another embodiment, and FIG. 3B is a vertical cross-sectional view of a hollow structure equivalent to (a) having a screw hole.

4A is an enlarged partial sectional view of the hollow structure shown in FIG. 2A, and FIG. 4B is a sectional view taken along line IVb-IVb of FIG.

5A is a sectional view corresponding to FIG. 4A showing a caulking state, and FIG. 5B is a sectional view taken along line Vb-Vb of FIG.

FIG. 6 is a side view showing an assembly device for a hollow structure according to the present invention.

7 is a front sectional view taken along the line VII-VII of FIG.

FIG. 8 is an enlarged view of a frame-shaped mount portion in FIG.

9 is a plan view of the assembling apparatus of FIG.

FIG. 10 is a perspective view of a conventional hollow structure.

FIG. 11 is an enlarged partial cross-sectional view of another conventional hollow structure.

[Explanation of Codes] AA Assembly Device A, B, C, D, E Hollow Structure 1A, 6A, 11A, 16A, 26A Upper Member 1B, 6B, 11B, 16B, 26B Lower Member 2A, 7A, 12A, 17A, 27A Left side plate 2B, 7B, 12B, 17B, 27B Right side plate 3,8,13,18,28 Caulking part 3a, 8a, 13a, 18a Caulking piece 3b, 8b, 13b, 18b Caulking receiving piece 3A Caulking part 4,10,14,19 Receiving groove 5,15,20 Hollow space 9,21 Screw hole 24 Base 25 Frame mount 29A, 29B Plate material feeding device 30 Guide roller mechanism 31A, 31B, 31C, 31D Hydraulic cylinder 32A, 32B Pressing type 33A, 33B Caulking receiving type 34 Frame 35 Beam 36A, 36B Hydraulic cylinder 37A, 37B Punch Ruda 38 caulking punch

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Watasugi Hagisawa 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture Nippon Light Metal Co., Ltd. Group Technology Center

Claims (6)

[Claims] 1. A pair of first plate-like members forming upper and lower surfaces,
A hollow structure in which a pair of second plate-shaped members forming a side surface are joined to each other, the caulking piece and the caulking piece being formed outside at both ends in the width direction of the first plate-shaped material. And forming a caulking portion composed of a caulking receiving piece having a receiving groove facing the side of the caulking piece, and inserting the upper and lower ends of the second plate-like material into the caulking portion, the caulking blade from the inner side A hollow structure body characterized in that the crimping piece and the second plate-shaped body are crimped into the receiving groove to be integrated by pressing. 2. The caulking portion is formed in a vertically protruding state outside a hollow space formed by the first plate-shaped member and the second plate-shaped member. The hollow structure described. 3. The caulking portion is formed without protruding outside a hollow space formed by the first plate-shaped member and the second plate-shaped member. The hollow structure described. 4. The hollow structure according to claim 1, wherein the second plate-shaped member is a corrugated plate. 5. The hollow structure according to claim 1, wherein the first plate-shaped material is made of an aluminum alloy extruded material. 6. The hollow structure according to claim 1, wherein the second plate-shaped member is made of a rolled aluminum alloy material.