JP2000346019A - Aluminum alloy extrusion having steel bracket and frame structure using thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame member which can be assembled by a simple joint means, and a frame structure using thereof. SOLUTION: In frame members 11, 21 each composed of an aluminum alloy extrusion 12, 22 having at least one channel-like part 4, and a steel bracket 13, 23 having at least one protrusion-like part 5 corresponding to the channel-like part 4, which are locked together with their channel-like part 4 and the protrusion-like part 4 being fitted together, the width W of at least a part of the protrusion-like part 5 is larger than the width L of the corresponding channel-like part 4. The steel brackets 13, 23 provided in these frame members 11, 21 are excellent in melt-welding ability and machining ability, and accordingly, can be simply joined to steel brackets provided to the same kind of other frame members, by a joint means such as melt-welding or bolt fastening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight frame member used for transportation equipment, a building, a temporary structure, and the like, and a frame structure using the same.

[0002]

2. Description of the Related Art Aluminum alloys are not inferior to steel materials in terms of hardness, strength, ductility and the like, and have the advantage that they can be bent, drilled and formed by pressing or the like. Extruded profiles made of such aluminum alloys are lightweight and have sufficient strength, and can be formed into various complicated cross-sectional shapes including hollow portions.
It is used for architectural materials such as door frame materials, greenhouse frames, scaffolds, etc., and frame members for temporary structures. More recently, extruded aluminum alloys have been used as frame structures for high-speed vehicles and other transportation equipment that require light weight, such as the frames of railway vehicles such as Shinkansen, motorcycle frames, and space frames of automobiles. It has spread.

In order to widely use an extruded aluminum alloy material as a frame member for a frame structure, it is important that the aluminum alloy extruded member can be easily assembled with the same type of frame member, other members and parts, etc., so that it can be easily assembled. Conventionally, bolts, rivets, and the like have been used for assembling a frame structure using an extruded aluminum alloy material, and joining means using joints having various shapes have been used. However, such joining means may require processing such as drilling in advance of the extruded aluminum alloy material, and there is a problem that on-site work becomes complicated, especially outdoors.

[0004] If a frame member made of an extruded aluminum alloy can be joined by fusion welding means such as arc welding or resistance welding which is an efficient joining means,
This is convenient because the frame structure can be easily assembled.

[0005]

However, the fusion welding of extruded aluminum alloy members has been conventionally performed by a special technique, and it is not easy to perform such fusion welding at an outdoor site. There is. Furthermore, even if resistance spot welding is used as a fusion welding means, the range of conditions that can be welded is narrower than resistance spot welding between steel members, and the electrode life is short,
Its use is not enough.

Further, fusion welding of an extruded aluminum alloy material and a steel member is impossible due to a large difference in heat conduction characteristics between the respective materials.

[0007] These problems not only hinder the assemblability of the frame structure using the extruded aluminum alloy material, but also hinder the automation and robotization of the frame structure. There is also a possibility of suppressing the expansion of the use of the frame structure using the extruded shape.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object to provide a frame member excellent in assemblability, with an aluminum alloy extrusion having a steel plate bracket that can be assembled by easy joining means. A profile and a frame structure using the same are provided.

[0009]

According to the present invention, an aluminum alloy extruded profile having a steel plate bracket according to the present invention corresponds to an aluminum alloy extruded profile having at least one groove-shaped portion and the groove-shaped portion. A steel plate bracket having at least one convex part is locked by fitting the groove part and the convex part, and a convex width dimension of at least a part of the convex part is The feature is that it is larger than the corresponding groove width dimension of the groove-shaped portion.

According to the present invention, the engagement between the aluminum alloy extruded profile and the steel plate bracket is achieved by a groove formed in the aluminum alloy extruded profile and a groove having a dimension larger than the groove width dimension of the groove. Because it is made by fitting with the convex part formed on the steel plate bracket, the force by which the convex part pushes and expands the groove part and the force by which the groove part presses and narrows the convex part, They are firmly fitted and locked. The number of grooves, width, length, depth, and formation position can be easily set by extruding an aluminum alloy for the groove-shaped portion and pressing the steel plate for the convex-shaped portion. Therefore, the locking strength, rigidity, direction, and the like by fitting can be easily adjusted.

According to a second aspect of the present invention, in the aluminum alloy extruded shape having the steel plate bracket according to the first aspect, the portion of the convex portion larger than the groove width dimension of the groove portion is the convex portion. Is characterized by being formed two or more in the longitudinal direction.

According to the present invention, the bracket made of the steel plate has a portion of the convex portion larger than the groove width dimension of the groove portion.
It is not formed over the entire length in the longitudinal direction of the protruding portion, but is formed at two or more locations, so that the locking strength and rigidity by fitting are not significantly reduced,
The force required for fitting can be reduced. as a result,
The extruded aluminum alloy and the steel plate bracket can be easily and efficiently fitted and locked.

According to a third aspect of the present invention, there is provided a frame structure comprising a plurality of aluminum alloy extruded profiles each having the steel plate bracket according to the first or second aspect.
The connection is characterized by being made by joining between the steel plate brackets.

According to the present invention, a plurality of frame members, which are formed by engaging the extruded aluminum alloy material and the steel plate bracket, are connected to each other so that the steel plate brackets are excellent in fusion welding or machinability. Is done by
The frame structure can be easily assembled by efficient fusion welding as joining means. Further, even with a frame member having a steel plate bracket provided with bolt fastening holes or the like in advance, the frame structure can be efficiently assembled by joining the steel plate brackets to each other.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a partial projection view showing an example of an extruded aluminum alloy material (hereinafter, referred to as a "frame member") having a steel plate bracket according to the present invention, and FIG.
It is a fragmentary top view of the frame member of FIG. FIG. 3 is a partial projection view showing another example of the frame member of the present invention and an aspect of a method of continuously connecting the frame members.

The frame members 1, 11, 21 correspond to the extruded aluminum alloy members (hereinafter, referred to as "extruded members") 2, 12, 22 having at least one groove-shaped portion 4, and the groove-shaped portions 4. Steel plate bracket having at least one convex portion 5 (hereinafter referred to as “bracket”).
3, 13 and 23 are locked by fitting the groove-shaped portion 4 and the convex-shaped portion 5. Then, as shown in FIG. 2, the convex width dimension W of at least a part of the convex portion 5.
Is larger than the groove width dimension L of the corresponding groove-shaped portion 4, thereby firmly fitting the convex portion 5 and the groove-shaped portion 4. The frame members 1, 11, thus locked,
The bracket 21 is connected to the same type of frame member by joining the brackets 3, 13, and 23 having excellent weldability and machinability, and is assembled into a frame structure.

The extruded members 2, 12, and 22 constitute the frame members 1, 11, and 21 themselves, and are formed by extruding an aluminum alloy. Since the aluminum alloy has excellent extrudability, the extruded shape obtained has a high degree of freedom in its cross-sectional shape. The cross-sectional shape of the extruded material constituting the present invention is not particularly limited as long as it is a long extruded material having at least one groove-shaped portion 4, and is variable even if the cross-sectional shape is constant over the longitudinal direction. It may have a cross-sectional shape and may have one or more hollow portions 16 and 26. For example, as shown in FIG. 1, an extruded profile 2 having a substantially hat-shaped cross-sectional shape in which one groove-shaped portion 4 is formed, or two groove-shaped portions 4 are formed as shown in FIG. 3. Extruded profiles 12, 22 having one or three hollow portions 16, 26 can be used.

The aluminum alloy used for the extruded members 2, 12, 22 is appropriately selected in consideration of the mechanical and chemical properties specific to the alloy. When used for a frame structure of a high-speed vehicle or other transportation equipment, a 6000 series or 7000 series aluminum alloy is usually used.

The groove-shaped portion 4 is engaged with the convex-shaped portion 5 formed on the bracket to lock the extruded profile and the bracket, and extends along the longitudinal direction of the extruded profile. At least one groove-shaped portion 4 is formed. A plurality of brackets having a convex portion 5 corresponding to the groove portion 4 can be fitted into the groove portion 4. As described above, the extruded shape has a high degree of freedom in its cross-sectional shape,
The number, width, length, depth, formation position, and the like of the groove-shaped portions 4 can be freely set. Such a shape factor of the groove-shaped portion 4 is determined in relation to a convex-shaped portion 5 described later.

The brackets 3, 13, and 23 have at least one convex portion 5 corresponding to the groove portion 4 of the extruded profile, and the convex portion 5 and the groove portion 4 are fitted. As a result, the frame member 1
Is configured. The locked bracket functions as a joining portion for joining the same type of frame member, other members and components, and the like.

The material used for the bracket is preferably a material which can be easily processed into a predetermined shape and which can be easily joined by an easy joining means. For example, a steel plate is used. In the present invention, a steel plate bracket that is easily machined into a predetermined shape by a mold press or the like is used. This steel plate bracket can be easily joined to other frame members and the like by fusion welding means such as arc welding or resistance welding, and can be easily screwed and riveted. As the material of the steel sheet, a material of a preferable kind is appropriately selected in consideration of weldability, machinability, strength, rigidity, corrosion resistance and the like.

The convex portion 5 is firmly fitted to the groove 4 of the extruded profile and plays a role of locking the bracket and the extruded profile. The shape is almost the same as the shape of the shape part 4. The protrusion width W of the protrusion 5 is formed to be larger than the groove width L of the groove 4 in order to firmly fit the protrusion 5 and the groove 4. The larger the difference between the convex width W and the groove width L, the greater the force required for fitting, but the joining strength does not increase much. Therefore, it is preferable that the convex width dimension W is slightly larger than the groove width dimension L. The degree is appropriately set according to the use of the obtained frame member. Furthermore, by forming a portion where the convex width W is larger than the groove width L over the entire length of the convex portion 5 in the longitudinal direction, without forming the portion on the portion of the convex portion 5, the mating engagement is achieved. Without significantly lowering the mechanical locking strength and rigidity of the stop part,
The load required for fitting can be further reduced. As a result, the fitting process and work can be facilitated.

Further, the shape of the steel plate bracket can be freely designed by machining. Therefore, by appropriately changing the shape, the number, the size, and the like of the protruding portions 5, the orientation of the fitting bracket, the locking strength, the rigidity, and the like can be adjusted. Further, the joining position with another frame member or the like can be adjusted by the locking position of the bracket.

The locking strength is a load required for pulling the extruded member and the bracket apart by pulling, and the rigidity of the locking portion to be fitted is determined by the rotation of the locking portion when a bending moment or a torsional moment is applied. Is evaluated as resistance to The relationship between the convex width W and the groove width L is appropriately set depending on the required locking strength.
When means for reinforcing the locking portion is adopted as described later, the setting is made in consideration of such circumstances.

The shape of the other portions is not particularly limited as long as at least one convex portion 5 corresponding to the above-described groove-shaped portion 4 is formed on the brackets 3, 13, and 23. Other parts of the frame other than the convex part 5,
A flange, a tab, a hole, a screw hole, and the like can be provided so that members and components having different functions and purposes can be integrated by joining means such as welding or screwing. With respect to the portion other than the convex portion 5, the shape of the fitting between the extruded member and the bracket can be appropriately set depending on the shape, and the assemblability of the frame structure can be improved and the cost and cost can be reduced. Good effects can be obtained. For example, as shown in FIG.
Of the bracket 1 is flat, and a through hole 7 for bolt fastening is provided in that portion.
Flanges 17 for fusion welding can be provided on 3 and 23.

Further, the engaging portion between the extruded member and the bracket can be reinforced by at least one of screwing, riveting, caulking and bonding. Such reinforcement can be performed according to the purpose of use of the frame member, such as in a case where the frame member is used for an application in which a high load stress is applied. As a result, a frame member having a sufficiently reinforced engaging portion can be obtained.

In such a frame member, the number of brackets to be locked to the extruded profile and the mode of locking can be appropriately designed according to the use of the obtained frame member. For example, as shown in FIG. 1, not only one bracket 3 is locked at one end of the extruded profile 2 having one groove-shaped portion 4, but also a similar bracket is locked at the other end. A plurality of brackets can be locked at an intermediate position between the brackets. Further, a plurality of convex portions corresponding to the respective groove portions 4 can be fitted to the extruded members 12 and 22 having the two groove portions 4 as shown in FIG. By providing these multiple brackets,
A variety of frame structures can be assembled.

The frame structure of the present invention is assembled by connecting a plurality of the above-described frame members or joining the frame members with other frame members or other members. In particular,
It is preferable that the connection or joining is made by joining between brackets. The joining means is as described above.

Examples of the frame structure include a girder frame of a vehicle. The obtained girder frame is preferably used as a frame structure of a high-speed vehicle that requires a reduction in weight. The girder frame is a part of a space frame suitable for the structure of a passenger car, and is a girder-shaped member in which two frame members are further joined so as to be orthogonal to two parallel frame members. is there. Such a girder frame can be efficiently produced in an assembly plant of an automobile structure provided with a robot type resistance spot welding machine. In addition, by using such a frame member, not only conventional window materials, door frame materials, greenhouse frames, frame materials for architectural materials and temporary structures such as scaffolds, but also frames for railway vehicles such as bullet trains, It is possible to easily and efficiently assemble a frame structure of a high-speed vehicle or other transportation equipment requiring light weight, such as a motorcycle frame.

[0031]

As described above, according to the frame member of the first aspect, the steel plate bracket which can employ various joining means is firmly locked to the aluminum alloy extruded shape member which can achieve the weight reduction. Therefore, the bracket can easily and efficiently join other frame members and components.

According to the second aspect of the present invention, the force required for fitting can be reduced without significantly lowering the strength and rigidity of engagement between the extruded profile and the bracket. Can be easily locked.

According to the frame structure of the third aspect, the frame structure can be easily assembled by efficient fusion welding, bolting, or the like as the joining means, so that the productivity of the assembly can be improved. .

[Brief description of the drawings]

FIG. 1 is a partial projection view showing an example of an extruded aluminum alloy material having a steel plate bracket of the present invention.

FIG. 2 is a partial plan view of an extruded aluminum alloy having the steel plate bracket of FIG. 1;

FIG. 3 is a partial projection view showing another example of the frame member of the present invention and an aspect of a method of connecting frame members together.

[Explanation of symbols]

 1, 11, 21 Frame member 2, 12, 22 Extruded profile 3, 13, 23 Bracket 4 Groove portion 5 Convex portion 7 Through hole 16, 26 Hollow portion 17 Flange portion L Groove width dimension W Protrusion width dimension

Continuation of the front page (72) Inventor Tetsushi Yanagimoto 194 Chifuku, Susono-shi, Shizuoka Prefecture F-term in the Mitsubishi Aluminum Co., Ltd. Chifuku factory (reference) 3J001 AA01 DA00 DE03 EA00

Claims (3)

[Claims] 1. An extruded aluminum alloy material having at least one groove portion and a steel plate bracket having at least one convex portion corresponding to the groove portion, wherein the groove portion and the convex shape are provided. An aluminum alloy extruded profile having a steel plate bracket locked by fitting with a part, wherein a convex width dimension of at least a part of the convex part is larger than a groove width dimension of the corresponding groove part. An aluminum alloy extruded section having a steel plate bracket. 2. The steel sheet according to claim 1, wherein two or more portions of the convex portion larger than a groove width dimension of the groove portion are formed in a longitudinal direction of the convex portion. Extruded aluminum alloy with a plastic bracket. 3. A frame structure comprising a plurality of aluminum alloy extruded profiles each having the steel plate bracket according to claim 1 or 2, wherein the connection is provided between the steel plate brackets. A frame structure characterized by being made by joining.