JP2024040038A - Joint structure of structural material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure of a structural material capable of forming a corner portion of a structure by joining three structural materials extending in XYZ directions with stable high strength.

SOLUTION: A joint structure 1 of a structural material uses: at least three sets of fixtures 10-14 respectively including a bolt and a nut; and three structural materials X1, Y1, Z1 respectively including a structural material main body having flat plate portions bent at a right angle and adjacent to each other, inclined plates disposed on the head of the structural material main body, and having adjacent inclined flat plate portions formed in a manner of being inclined toward a central bent portion from both outer edges of the adjacent flat plate portions bent at a right angle, and a joint plate vertically bent inward with respect to the inclined flat plate portion at an inclined side of each of the inclined flat plate portion of the inclined plate as a folding line, and having fixing holes to which the fixtures 10-14 can be inserted. Three structural materials X1, Y1, Z1 are respectively extended in the XYZ directions so as to form a corner portion of the structure.

SELECTED DRAWING: Figure 1A

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a joining structure of structural members in which three structural members are respectively extended in the XYZ directions to form corners of a structure.

Conventionally, as a joining structure of structural members in which three structural members are each extended in the XYZ direction to form a corner of a structure, for example, the ends of three metal structural members are joined by welding. are known (see Figure 12). However, welding requires a skilled technique, the quality of the product is likely to depend on the skill of the worker, and there are problems in that it is difficult to detect the joint strength (detect defective products). Therefore, there is a need for a new joining structure for structural materials that does not require welding and can solve these problems.

An example of a joint structure of structural members that does not require welding is a joint structure of the ends of structural members in which the respective ends of the first, second, and third structural members are combined in a state where they intersect with each other. Then, the engaging convex part or the engaging concave part provided at the end of the second side of the third structural member is engaged with the engaging convex part or engaging convex part provided at the end part of the first side of the second structural member. and an engagement recess or engagement protrusion provided at the end of the second side of the second structural member and an engagement protrusion or engagement provided at the end of the first side of the first structural member. an engaging recess or an engaging protrusion provided at the end of the first side of the third structural member; and an engaging protrusion provided at the end of the second side of the first structural member; Alternatively, a joining structure of the end portion of a structural material that is provided with an engaging recessed portion has been proposed (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2015-129383

The present invention was made in view of these circumstances, and an object of the present invention is to form a corner of a structure by joining three structural members extending in the XYZ directions with stable and high strength. The purpose of the present invention is to provide a joining structure for structural materials that can be used.

As a result of intensive study on a joining structure for structural members forming the corners of a structure that does not require welding, the present inventor discovered a new joining structure for structural members and completed the present invention.

That is, the present invention is as follows.
[1] Three sets of fixtures each equipped with a bolt and a nut,
A structural material main body having adjacent flat plate portions bent at right angles, and a tip provided at the front of the structural material main body and inclined from both outer edges of the adjacent flat plate portions bent at right angles toward the central bent portion. a sloped plate having adjacent sloped flat plate parts forming an apex angle at each side; three structural members each having a joining plate having a fixing hole through which a fixing device can be inserted;
A structural member joining structure in which the three structural members are each extended in the XYZ direction to form a corner of the structure,
The inclined sides of the inclined flat plate parts of the inclined plates of the three structural members are brought into contact with each other, and the ends of the three structural members are butted together so that the three structural members extend in the XYZ directions, respectively.
A right angle is formed between the apex angle of the tip of the inclined flat plate part erected in the Z direction of the structural member in the X direction and the apex angle of the tip of the inclined flat plate part erected in the X direction of the structural member in the Z direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the X direction, which stands up in the Y direction, and the apex angle of the tip of the inclined flat plate part, which stands up in the X direction of the structural member in the Y direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the Y direction, which is erected in the Z direction, and the apex angle of the tip of the inclined flat plate part, which is erected in the Y direction of the structural member in the Z direction,
A joining structure for structural members, characterized in that the three structural members are joined by inserting and fixing the bolts and nuts into the fixing holes of the structural members.

[2] A joining structure of structural materials further using at least three bending support plates,
the bent support plate includes adjacent flat plate portions bent at 120° and insertion holes formed in the flat plate portions, through which the fasteners are inserted,
the three bent support plates are arranged in a circumferential direction corresponding to the three structural members so that the bent portions are close to an inner center line passing through vertices of corner portions formed by the three structural members,
The joining structure of structural materials according to the above-mentioned [1], characterized in that a fastener is inserted through the insertion hole of the bending support plate and the fixing hole of the structural material to fix the structural material.

[3] A pair of joint plates provided on the structural members are each extended, and the extending ends are at an inward center line passing through the apex of the corner formed by the three structural members, The joining structure of structural members according to the above [1], characterized in that the structural members are in close proximity, in contact with each other, or bonded together.

[4] The joining of the structural members according to any one of [1] to [3] above, characterized in that the apex angle of the tip of the inclined flat plate portion of the inclined plate of the three structural members in the XYZ directions is 45°. structure.
[5] The structural material has two or more fixing holes for one inclined flat plate part, and is equipped with a fixing tool that is inserted and fixed in the two or more fixing holes. The joining structure of structural materials according to any one of [1] to [4] above.
[6] The structural material joining structure according to any one of [1] to [5] above, wherein the structural material main body is a member having an L-shaped cross section and a predetermined length.
[7] The structure according to [1] to [6] above, wherein the structural material main body is provided with an elongated member fixing portion for fixing three elongated members extending in the XYZ directions at the rear thereof. A joining structure of any of the structural materials described.
[8] A fastener insertion hole for inserting a fastener for fastening the bolts and nuts is provided in the structural material body intersecting the center line of the fixing hole of the joint plate of the structural material. The joining structure of structural materials according to any one of [1] to [7] above.
[9] The structural member joining structure according to any one of [1] to [8] above, wherein the structural member is formed by bending a single metal plate.
[10] A structure comprising the joining structure according to any one of [1] to [9] above at a corner.

The structural member joining structure of the present invention can form a corner of a structure by joining three structural members extending in the XYZ directions with stable and high strength.

FIG. 2 is an explanatory diagram of a joining structure of structural members according to the first embodiment of the present invention, and is a schematic diagram of a state in which the structural members are joined. FIG. 1B is an enlarged view of the joining structure of the structural members in FIG. 1A. FIG. 2 is a schematic diagram of the joining structure of structural members shown in FIG. 1B before the structural members in the XYZ directions are joined, and is a diagram in which the ends of the structural members in the YZ directions are butted against each other. FIG. 2 is a perspective view of the structural member X1 (angle member X1) in the X direction of the structural member joining structure shown in FIG. 1; FIG. 2 is a front view of an angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 2 is a right side view of the angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 2 is a plan view of an angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 2 is a developed view of an angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 2 is a front view of a bending support plate of the joining structure of structural members shown in FIG. 1; FIG. 2 is a right side view of the bending support plate of the joining structure of structural members shown in FIG. 1; 1 is a schematic diagram of a joining structure of structural members according to a first embodiment of the present invention, and is a view of a structural member X1 and a structural member Z1 (angle member X1 and angle member Z1) viewed from the outside. FIG. 3 is a schematic diagram of a joining structure of structural members according to a second embodiment of the present invention, and is a perspective view seen from the inside. FIG. 3 is a schematic diagram of a joining structure of structural members according to a second embodiment of the present invention, and is a perspective view seen from the outside. FIG. 7 is a schematic diagram of a joining structure of structural members according to a third embodiment of the present invention. It is a photograph of a structure provided with a joining structure of the structural material of the present invention manufactured in an example at a corner. 10 is a photograph of a corner of a structure provided with the joining structure shown in FIG. 9 at the corner, as seen from the inside. FIG. 2 is a schematic diagram of a structure for joining structural members by welding according to a reference example. FIG. 2 is a schematic diagram of a joining structure of structural members by conventional welding.

The joining structure of the structural material of the present invention includes three sets of fixing devices each equipped with a bolt and a nut, a structural material main body having adjacent flat plate parts bent at right angles, and a structural material main body provided at the front of the structural material main body, A sloped plate having adjacent sloped flat plate parts that are bent from both outer edges of the adjacent flat plate parts toward the central bent part to form an apex angle at each tip, and an inclination of each sloped flat plate part of the sloped plate. A bonding plate that is bent perpendicularly inward to the inclined flat plate part with the sides as the bending line and has a fixing hole through which a fixing tool can be inserted. A joining structure of structural members in which the members extend in the XYZ directions to form corners of a structure, wherein the inclined sides of the inclined flat plate parts of the inclined plates of the three structural members are in contact with each other, and the three structural members are joined together. By butting the ends of the three structural members so that the members extend in the XYZ directions, the apex angle of the tip of the inclined flat plate part standing upright in the Z direction of the structural member in the X direction and the vertical angle in the Z direction A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member standing upright in the X direction, and the apex angle of the tip of the inclined flat plate part standing upright in the Y direction of the structural member in the X direction and the structure in the Y direction. A right angle is formed between the apex angle of the tip of the inclined flat plate part standing upright in the X direction of the structural member, and the apex angle of the tip of the inclined flat plate part standing upright in the Z direction of the structural member in the Y direction and the structural member in the Z direction. The three structural members are joined by forming a right angle with the apex angle of the tip of the inclined flat plate part erected in the Y direction, and fixing bolts and nuts inserted into the fixing holes of the structural members. It is characterized by

The joining structure of structural members of the present invention is such that three structural members extending in the XYZ directions are joined with stable and high strength without the need for welding, forming a corner of a structure with stable and high strength. can do. In other words, since the joining structure of structural members of the present invention uses fixing tools such as bolts and nuts, unlike conventional joining by welding, which requires skilled techniques, the quality of the product depends on the skill of the worker. A stable and high-strength bonded structure is formed without being affected by the Further, since the structure is simple, the manufacturing process of the structure can be simplified and manufacturing costs can be reduced, and work efficiency can be improved. Furthermore, since high heat treatment is not required, structural materials with low heat resistance that are not suitable for welding can be used.

The joining structure for structural members of the present invention can be used as a joining structure for forming corners of structures such as frames, frames, cases, tables, buildings, temporary prefabricated structures, and the like.

[Fixture]
First, the fixture of the present invention will be explained.
The joining structure for structural members of the present invention includes at least three sets of fixing devices each including a bolt and a nut. The three structural members are joined by inserting and fixing the bolts and nuts into the fixing holes of the joining plates of the structural members. The bolts and nuts may be separate from the joining plate of the structural material, or either the bolt or the nut may be molded integrally with the structural material. In addition, three sets of fixing devices are the minimum number of fixing devices corresponding to three structural members extending in the XYZ directions, and three or more sets of fixing devices correspond to the number of fixing holes in the structural members in the XYZ directions. It may be equipped with tools.

(Shape and material of bolts and nuts)
The shape and material of the bolt and nut are not particularly limited as long as they can be inserted and fixed into the fixing hole of the structural member. Examples of the material for the bolts and nuts include metal and plastic (synthetic resin), with metal being preferred.

[Structural materials]
Next, the structural material of the present invention will be explained.
The structural member joining structure of the present invention includes three structural members each including a structural member main body, an inclined plate, and a joining plate. The structural member, inclined plate and joint plate are usually integral. The ends of the three structural members are butted against each other so as to extend in the XYZ directions, thereby forming a corner of the structure (see FIG. 1A).

(Structural material body)
The structural material body has adjacent flat plate portions bent at right angles (see 22a and 22b in FIG. 3A). That is, the structural material main body has at least two adjacent flat plate portions each having an L-shaped cross section with a bending angle of 90°. Two adjacent flat plate parts may have different shapes or the same shape, but preferably have the same shape. That is, it is preferable that the structural material main body is formed symmetrically (equilateral chevron shape) around the central bent portion. Further, a reinforcing edge part may be provided at one end or both ends of the flat plate part. Specific examples of the cross-sectional shape of the structural material body include an L-shape (equilateral mountain shape), a square shape, a right-angled triangle shape, a U-shape, etc. (equilateral mountain shape) is preferable. Note that, for example, a member having an L-shaped cross section (equilateral mountain shape) refers to a member whose main portion is an L-shaped cross section, and also includes a member provided with a turned-edge portion for reinforcement (Fig. 3A reference). In the structural material main body, the tip side of the flat plate portion is continuous with an inclined plate described below.

(slanted plate)
The inclined plate is a member provided at the front of the structural material main body, and is a member provided at the forward end of the structural material main body, and is a member that is inclined from both outer edges of adjacent flat plate parts bent at right angles toward the central bent part, and forms an apex angle at the tip of each adjacent flat plate part. It has an inclined flat plate part. That is, the inclined plate has a right triangular inclined flat plate part bent at a bending angle of 90 degrees on both sides with the central bent part as the center line, and the tip angle of the right triangle is the apex angle. Note that the tip portion of the inclined plate may be chipped, and in that case, the apex angle is formed on the extension line of the inclined side of the inclined flat plate portion and the central bent portion.

(joint plate)
The joint plate is bent perpendicularly inward with respect to the inclined flat plate part using the inclined side of each inclined plate part of the inclined plate as a bending line, and has a fixing hole through which a fixing tool can be inserted. At least one joining plate is provided for each inclined flat plate portion, and since the inclined plate has two adjacent inclined flat plate portions, two or more joining plates are provided for each inclined plate. It will be established. Two or more joining plates may be provided for one inclined flat plate portion. Moreover, one bonding plate may have two or more fixing holes. That is, two or more fixing holes may be provided for one inclined flat plate part of the inclined plate (four or more for one inclined plate), thereby making it possible to join more firmly. Become. In addition, when using the bending support plate described later, the strength of the joint structure can be further increased by providing multiple insertion holes in the bending support plate or increasing the number of bending support plates used, depending on the number of fixing holes. can be increased.

(Material of structural material)
Examples of the material of the structural material include metal and plastic (synthetic resin), with metal being preferred. Specific examples of metals include steel such as ordinary steel (carbon steel), special steel such as alloy steel, special purpose steel, and tool steel, and non-ferrous metals such as aluminum alloy, copper alloy, titanium, and magnesium. can. Specific examples of plastics include polycarbonate, polyphenylene sulfide, PEEK, vinylidene fluoride resin, tetrafluoroethylene resin, polyvinyl chloride, polypropylene, PA46, polyacetal, glass fiber reinforced polyamide, FRP, ceramic, silicon, polyimide, etc. can be mentioned.

(Aspects of structural materials)
The structural material of the present invention is one in which an inclined plate (and a joint plate) is provided at the front of the structural material main body, but an inclined plate (and a joint plate) is also provided at the rear of the structural material main body. is preferred. This makes it possible to configure all corners of the structure with the joining structure of the present invention. Further, the structural material of the present invention may be configured in such a manner that the structural material main body is composed of a long member such as a member having an L-shaped cross section with a predetermined length, or the structural material main body includes a long member such as a member having an L-shaped cross section. It may also be configured to be attachable. Examples of such a structural material main body include, for example, angle members (equilateral angle steel) and square steel pipes, but angle members are preferred. Further, the structural members in the XYZ directions may be members of the same shape or may be members of different shapes, but members of the same shape are preferable.

An example of an embodiment in which the structural material main body is configured to be able to attach elongated members is, for example, a structure in which the structural material main body is provided with an elongated member fixing part that fixes three elongated members extending in the XYZ directions behind the structural material main body. Examples of this can be mentioned. In this embodiment, the structural member joining structure of the present invention functions as a three-way corner fixture that fixes three members extending in the XYZ directions.

(Size of structural material)
The length of the structural material can be set as appropriate depending on the application, and in the case of an embodiment in which the structural material main body is composed of a long member having a predetermined length, it is preferably 200 to 2000 mm, and 300 mm. It is more preferably from 1,500 mm to 1,500 mm, and even more preferably from 500 to 1,200 mm. In addition, in the case of an embodiment in which the structural material main body is configured to be able to attach a long member (when functioning as a three-sided corner fixture), the length is preferably 50 to 500 mm, and more preferably 80 to 300 mm. , more preferably 100 to 200 mm. Further, its width (the width of the flat plate portion of the structural material main body) is preferably 10 to 150 mm, more preferably 15 to 120 mm, and even more preferably 20 to 100 mm. Further, its thickness is preferably 0.5 to 30 mm, more preferably 1 to 20 mm, and even more preferably 2 to 15 mm.

(Manufacture of structural materials)
When the material of the structural material is metal, it is preferable that the structural material is formed by bending a single metal plate (see FIG. 4). This makes it easy to mold the structural material, simplifying the manufacturing process and reducing manufacturing costs.

(fastener insertion hole)
In the structural material joint structure of the present invention, a fastener insertion hole for inserting a fastener for fastening bolts and nuts is provided in the structural material body intersecting the center line of the fixing hole of the structural material joint plate. (See 49 in Figure 3A). This facilitates attachment of bolts and nuts. Examples of the fastener include those normally used for fastening bolts and nuts, such as a screwdriver, a nut driver, an electric screwdriver, a hexagonal wrench, and the like.

[Joining mode]
The joining structure of the structural members of the present invention is such that the inclined sides of the inclined flat plate portions of the inclined plates of the three structural members are in contact with each other, and the three structural members are respectively extended in the XYZ directions. By abutting the ends, the apex angle of the tip of the inclined flat plate part standing in the Z direction of the structural member in the X direction and the apex of the tip of the inclined flat plate part standing in the X direction of the structural member in the Z direction. The apex angle of the tip of the inclined flat plate part standing upright in the Y direction of the structural member in the X direction, and the apex angle of the tip of the inclined flat plate part standing upright in the X direction of the structural member in the Y direction, forming a right angle with the corner. and the apex angle of the tip of the inclined flat plate part standing upright in the Z direction of the structural member in the Y direction, and the apex angle of the tip of the inclined flat plate part standing upright in the Y direction of the structural member in the Z direction. to form a right angle (see FIGS. 1B and 6).

The joining structure of the structural members of the present invention is such that when the inclined sides of the inclined flat plate parts of the inclined plates of the three structural members in the XYZ directions are in contact with each other, the sum of the apex angles of the tips of the adjacent inclined flat plate parts is a right angle. (90°), the three structural members can be accurately joined in the XYZ directions. Further, the joining structure of the structural members of the present invention is excellent in terms of design because right angles are formed in all directions of the XYZ directions.

Examples of combinations of apex angles include, for example, a combination in which all the apex angles at the tips of the inclined flat plate parts of the inclined plates of the three structural members in the XYZ directions are formed at the same angle (45°); , the apex angle of the tip of the inclined flat plate part of the inclined plate of one structural member in the XYZ directions is formed at an angle smaller than 45°, and the inclined flat plate parts of the inclined plates of the remaining two structural members in the XYZ directions are An embodiment in which the apex angles of the tips are larger than 45° and formed at equal angles, or a configuration in which the apex angles of the tips of the inclined flat plate parts of the inclined plate of the structural material in the XYZ directions are formed at different angles. Examples include embodiments in which these are combined. That is, it is preferable to set the apex angle appropriately according to the width of the structural material in the XYZ directions (width of the flat plate portion of the structural material main body).

For example, if the widths of the structural members in the XYZ directions are the same, the apex angle of the tips of the inclined flat plate parts of the inclined plates of the three structural members in the XYZ directions can be set to 45°. Since all of the structural members can be made into members of the same shape, mass production is possible and manufacturing costs can be held down.

In addition, when joining structural members with different widths, for example, when the width of the structural members in the Z direction is small, the apex angle of the tip of the inclined flat plate part of the inclined plate of one structural member in the Z direction is smaller than 45°. The inclined flat plate parts of the three structural members' inclined plates are formed at an angle, and the apex angle of the tips of the inclined flat plate parts of the inclined plates of the structural members in the XY direction are formed at an angle larger than 45°, and the inclined flat plate parts of the inclined plates of the three structural members are in contact with each other. A good corner can be formed by making the lengths of the sloped sides the same. Specifically, the Z-direction structural member has a short width with an inclined plate having an apex angle of 30°, and the Z-direction structural member has a longer width than the Z-direction structural member with an inclined plate having an apex angle of 60°. An example is one in which structural members in the direction and the Y direction are joined (see FIGS. 7A and 7B).

Further, with the ends of the three structural members butted against each other, the bolts and nuts are inserted and fixed into the fixing holes of the structural members, thereby joining the three structural members. The structural material may have one fixing hole for the inclined flat plate part, but it may also have two or more fixing holes. Specifically, for example, for joining three structural materials in the XYZ directions. One example is one in which each plate has two fixing holes and six sets of fixing devices are inserted and fixed in the two fixing holes (see FIG. 8). Note that fixing tools (bolts and nuts) are used depending on the number of fixing holes.

As described above, the joining structure of the structural members of the present invention is such that the inclined sides of the inclined flat plate parts of the inclined plates of the three structural members are in contact with each other, and the three structural members are respectively extended in the XYZ directions. The three structural members are joined by inserting bolts and nuts into the fixing holes of the structural members while the ends of the structural members are butted against each other, thereby achieving stable and high strength. It is possible to join three structural members extending in the XYZ directions, and it is possible to form a corner of the structure with stable and high strength.

[A mode including a reinforcing structure for the joining structure of structural materials]
The joining structure for structural members of the present invention preferably further includes a reinforcing structure in order to join the structural members more firmly.

Specifically, an embodiment of the joint structure for structural members according to the present invention that includes a reinforcing structure is a joint structure for structural members that further uses at least three bending support plates, the bending support plates being bent at 120°. The three bending support plates are provided with adjacent flat plate parts and insertion holes through which fixing devices formed in each of the flat plate parts are inserted. The bending parts are arranged in the circumferential direction so as to be close to the center line and corresponding to the three structural members, and the fixing tools are inserted into the insertion holes of the bending support plate and the fixing holes of the structural members. Examples include a fixed mode.

(Bending support plate)
The joining structure for structural members of the present invention in this aspect includes at least three bent support plates each having adjacent flat plate portions bent at 120° and insertion holes formed in each of the flat plate portions through which fixing devices are inserted. We are prepared.

Materials for the bending support plate include, for example, metal and plastic (synthetic resin), with metal being preferred. Specifically, the materials listed as structural materials can be used, and the material may be the same as the structural material or a different material.

The bending support plate is formed by, for example, two rectangular trapezoidal flat plate portions whose hypotenuses are connected at a bending angle of 120° to have a V-shaped cross section (see FIGS. 5A and 5B). The shape of the flat plate portion can be determined as appropriate.

The three bending support plates are arranged so that each bending part is close to an inward center line passing through the apex of the corner formed by the three structural members, and in a circumferential direction corresponding to each of the three structural members. It is arranged. In other words, in an XYZ orthogonal coordinate system whose origin is the vertex of the corner formed by the three structural members, the three bending support plates have a center that is a collection of points equidistant from the XYZ direction extending inward from the origin. They are arranged radially around a line (inner center line) (see FIG. 1B).

In this aspect, for example, the three structural members are joined by inserting and fixing three sets of fixtures through the insertion holes of the three bending support plates and the fixing holes of the three structural members. By fixing the three structural members through the three bending support plates, the three bending support plates play the role of reinforcing members, and the three structural members extending in the XYZ directions close inward. Prevents deformation and joins the three structural members more firmly. Further, it is preferable that both outer edges of the flat plate portion of the bending support plate are in contact with the inclined plates of the three structural members, respectively, and it is more preferable that both outer edges of the flat plate portion of the bending support plate are in contact with the inclined plates perpendicularly. As a result, it is possible to prevent displacement due to shocks such as vibrations, and to support the three structural members in a more stable state.

The bending support plate may include a plurality of insertion holes in each flat plate part of one bending support plate. For example, when the structural material has a plurality of fixing holes for one inclined flat plate part, the bending support plate However, it is preferable to include a plurality of insertion holes corresponding to the fixing holes of the structural member. Specifically, the joining structure of the structural members of the present invention in such an aspect is, for example, one in which the joining plates of the three structural members in the XYZ directions each have two fixing holes, and one flat plate of the three bending support plates. Each part has two insertion holes corresponding to the two fixing holes in the structural material, and fixing tools (total of 6 sets) are inserted and fixed in the two insertion holes in the bending support plate and the two fixing holes in the structural material. structure. In addition, when the structural material has a plurality of fixing holes for one inclined flat plate part, a plurality of bending support plates each having one insertion hole in the flat plate part may be used.

Another aspect of the present invention in which the reinforcing structure of the joint structure of structural members is provided is that a pair of joint plates provided on the structural member are each extended, and the extended end portions are formed from three structural members. Examples include embodiments in which the inner center line passing through the apex of the corner is adjacent to, in contact with, or bonded to the inner center line. From the viewpoint of strength, the joining plate preferably extends from 50% or more, preferably 60% or more, and more preferably 70% or more of the inclined side of the inclined flat plate portion. The joint plate has, for example, a right trapezoid shape, with both sides thereof extending perpendicularly to the inclined sides. Further, the adjoining angle between adjacent joining plates at the abutting portions of the extending ends of the joining plates is 120°. In this aspect, the pair of bonding plates provided on the structural material serve as the three bending support plates, thereby making it possible to bond the structural material more firmly. Note that, like the bending support plate, the joint plate may include a plurality of insertion holes.

Next, a structure using the joining structure of structural materials of the present invention will be described.
Examples of the structure of the present invention include a structure in which the above-mentioned joining structure is provided at a corner. Examples of such a structure include, for example, a rectangular parallelepiped frame having the structural material joining structure of the present invention at four upper and lower corners (total of 8 corners) (see FIG. 9), and the structural material joining structure of the present invention. For example, a table-like pedestal having four corners of the upper part.

Hereinafter, first to third embodiments of the joining structure for structural members of the present invention will be specifically described with reference to the drawings, but the present invention is not limited to the present embodiments.

Here, FIG. 1A is an explanatory diagram of a joining structure of structural members according to a first embodiment of the present invention, and is a schematic diagram of a state in which the structural members are joined. FIG. 1B is an enlarged view of the joining structure of the structural members in FIG. 1A. FIG. 2 is a schematic diagram of the joining structure of structural members shown in FIG. 1B before the structural members in the XYZ directions are joined, and is a diagram in which the ends of the structural members in the YZ directions are butted against each other. FIG. 3A is a perspective view of the structural member X1 (angle member X1) in the X direction of the structural member joining structure shown in FIG. 1. FIG. FIG. 3B is a front view of the angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 3C is a right side view of the angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 3D is a plan view of the angle member X1 of the joining structure of structural members shown in FIG. 1. FIG. FIG. 4 is a developed view of the angle member X1 of the joining structure of structural members shown in FIG. 5A is a front view of the bending support plate of the joining structure of structural members shown in FIG. 1. FIG. FIG. 5B is a right side view of the bending support plate of the joining structure of structural members shown in FIG. 1. FIG. FIG. 6 is a schematic diagram of a joining structure of structural members according to the first embodiment of the present invention, and is a view of the structural member X1 and the structural member Z1 (angle member X1 and angle member Z1) viewed from the outside side. .

As shown in FIGS. 1A and 1B, a joining structure 1 for structural members according to the first embodiment of the present invention includes three structural members extending in the XYZ directions, an angle member X1 in the X direction and an angle member X1 in the Y direction. Angle material Y1, angle material Z1 in the Z direction, bolt and nut 10 for fixing angle material X1, Z1 as three sets of fixtures, bolt and nut 12 for fixing angle material X1, Y1, angle material Y1, Z1 It is provided with bolts and nuts 14 for fixing. The angle members X1, Y1, and Z1 are members having the same structure. Further, the bolts and nuts 10 to 14 are members having the same structure.

Furthermore, the structural material joint structure 1 has three bending support plates as reinforcing members: bending support plate 16 that supports angle member X1, bending support plate 18 that supports angle member Y1, and bending support plate 20 that supports angle member Z1. The bending support plates 16 to 20 are each members of the same configuration.

As shown in FIG. 2, in the joining structure 1 of structural members, an angle member X1 in the X direction, an angle member Y1 in the Y direction, and an angle member Z1 in the Z direction are joined with their respective ends butted against each other. This forms the corners of the structure.

As shown in FIGS. 3A to 3D, the angle member X1 is made of general structural rolled steel material with a length of about 1000 mm, and has an L-shaped cross-section as a structural member body having adjacent flat plate portions 22a and 22b bent at right angles. It is equipped with 24. The width of each flat plate portion is approximately 40 mm.

Further, the angle material X1 is provided at the front of the structural material main body 24, and is an adjacent inclined flat plate that is formed to be inclined toward the center bent part 26 from both outer edges of the adjacent flat plate parts 22a and 22b bent at right angles. An inclined plate 30 having portions 28a and 28b is provided. The inclined flat plate portions 28a and 28b each form an apex angle α of 45° at their tips.

Further, the angle member X1 includes joining plates 34a and 34b that are bent perpendicularly inward to the inclined flat plate parts 28a and 28b using the inclined sides of the inclined flat plate parts 28a and 28b of the inclined plate 30 as bending lines. There is. The joining plates 34a and 34b each have a fixing hole 32a and a fixing hole 32b each having a diameter of about 10 mm through which the bolt and nut 10 can be inserted.

Further, on both edges of the flat plate parts 28a, 28b of the structural material main body 24, edge turn parts 36a, 36b are provided that stand perpendicularly to the flat plate parts 28a, 28b. Further, at the rear of the structural material main body 24, an inclined plate 38 and joint plates 40a and 40b are formed. Since the inclined plate 38 and the joining plates 40a and 40b have the same configuration as the inclined plate 30 and the joining plates 34a and 34b, the details will be omitted.

Furthermore, since the angle members Y1 and Z1 are members having the same structure as the angle member X1, they are given the same reference numerals as the angle member X1, and the explanation thereof will be omitted.

As shown in FIG. 4, the angle member X1 described above is formed by cutting out and bending a metal plate 48 made of rolled steel for general structural use.

As shown in FIGS. 5A and 5B, the bending support plate 16 includes adjacent bending support plate flat plate portions 42a and 42b bent at 120°. The bending support plate flat plate portions 42a, 42b are provided with an insertion hole 44a with a diameter of about 10 mm through which the bolt and nut 10 are inserted, and an insertion hole 44b with a diameter of around 10 mm through which the bolt and nut 12 are inserted. The bending support plate 16 is formed into a V-shaped cross section by connecting the oblique sides of two right-angled trapezoidal bending support plate flat plate portions 42a and 42b at a bending angle of 120° at the bending portion 46. .

Further, the structural material joining structure 1 is used as a fastener for fastening bolts and nuts 10 to 14 to the structural material body 24 intersecting the center line of the fixing hole 32 of the joining plate 34 of the angle materials X1, Y1, and Z1. A fastener insertion hole 49 is provided for inserting a driver.

As shown in FIGS. 1A and 1B, in the joining structure 1 for structural members, the inclined sides of the inclined flat plate portions 28 of the inclined plates 30 of the angle members X1, Y1, Z1 are brought into contact with each other, and the angle members X1, Y1, Z1 The ends of the angle members X1, Y1, and Z1 are butted against each other so that the angle members X1, Y1, and Z1 extend in the XYZ directions, respectively, to form the corners of the structure. At this time, as shown in FIG. A right angle is formed with the apex angle β (45°) of the tip of the inclined flat plate portion 52 (28) of the inclined plate 50 (30). Although not shown, similarly, the apex angle of the tip of the inclined flat plate portion 28 of the inclined plate 30 erected in the Y direction of the angle member X1 and the inclined flat plate portion of the inclined plate 30 erected in the X direction of the angle member Y1 28, and the vertical angle of the tip of the inclined flat plate part 28 of the inclined plate 30, which is erected in the Z direction of the angle member Y1, and the inclined plate erected in the Y direction of the angle member Z1. 30 forms a right angle with the apex angle of the tip of the inclined flat plate portion 28.

As shown in FIGS. 1A and 1B, in the joint structure 1 of structural members, the bending support plates 16 to 20 are attached to the inner center line passing through the vertices of the corners formed from the angle members X1, Y1, and Z1. They are arranged in the circumferential direction so that the bent portions 46 are close to each other and correspond to the angle members X1, Y1, and Z1, respectively, and the insertion holes 44 of the bending support plates 16 to 20 and the angle members X1, Y1, and Z1. The angle members X1, Y1, and Z1 are joined by inserting bolts and nuts 10 to 14 into the fixing holes 32 and fixing them.

In the above-described joining structure 1 for structural members, the inclined sides of the inclined flat plate portions 28 of the inclined plates 30 of the angle members X1, Y1, and Z1 are in contact with each other, and the angle members X1, Y1, and Z1 are each extended in the XYZ direction. The ends of the angle members X1, Y1, and Z1 are butted together to form the corners of the structure, and are fixed with three sets of bolts and nuts 10 to 14, so that the XYZ The angle members X1, Y1, and Z1 extending in the direction can be joined. In addition, in the joining structure 1 of structural members, the inclined sides of the inclined flat plate portions 28 of the inclined plates 30 of the angle members X1, Y1, and Z1 are in contact with each other, and the inclined sides of the inclined flat plate portions 28 of the adjacent inclined plates 30 are in contact with each other. Since the sum of the apex angles of the tips is a right angle (90°), the angle members X1, Y1, and Z1 can be accurately joined in the XYZ directions, resulting in an excellent design. Furthermore, since the three bending support plates 16 to 20 as a reinforcing structure support the angle members X1, Y1, and Z1, the angle members X1, Y1, and Z1 can be more firmly joined.

Next, a joining structure of structural members according to a second embodiment of the present invention will be described in detail. This embodiment differs from the first embodiment in that the width of the angle member in the Z direction is shorter than the width of the angle member in the X and Y directions. Further, members having the same configuration as the structural material joining structure 1 of the first embodiment are given the same reference numerals and the description thereof will be omitted.

Here, FIG. 7A is a schematic diagram of a joining structure of structural members according to a second embodiment of the present invention, and is a perspective view seen from the inside. FIG. 7B is a schematic diagram of a joining structure of structural members according to a second embodiment of the present invention, and is a perspective view seen from the outside. Note that in FIGS. 7A and 7B, the bending support plates 16 to 20 and the bolts and nuts 10 to 14 are omitted for easier understanding.

As shown in FIGS. 7A and 7B, in the joining structure 2 for structural members according to the second embodiment of the present invention, the angle member Z2 in the Z direction has an inclined plate 54 whose apex angle γ is 30°. At the same time, the width of the flat plate portion 56 is approximately 23 mm. On the other hand, in the X-direction angle member X2 and the Y-direction angle member Y2, the apex angle δ of each inclined plate 58 is formed to be 60°, and the width of the flat plate portion 60 thereof is formed to be approximately 40 mm. Further, the length of the inclined side of the inclined flat plate portion 62 of the inclined plate 54 of the angle material Z2 in the Z direction and the length of the inclined side of the inclined flat plate portion 64 of the inclined plate 58 of the angle material X2 and the angle material Y2 are the same length. It is formed.

The joining structure 2 for structural members according to the second embodiment of the present invention described above has the apex angle γ , δ is a right angle, so the angle members X2, Y2, and Z2 having different widths can be accurately joined in the XYZ directions.

Next, a joining structure of structural members according to a third embodiment of the present invention will be described in detail. This embodiment differs from the first embodiment in that each structural member has two fixing holes. Further, members having the same configuration as the structural material joining structure 1 of the first embodiment are given the same reference numerals and the description thereof will be omitted.

Here, FIG. 8 is a schematic diagram of a joining structure of structural members according to a third embodiment of the present invention.

As shown in FIG. 8, in the structural member joining structure 3 according to the third embodiment of the present invention, the joining plates 66 of the angle members X3, Y3, and Z3 are each provided with two fixing holes 32 and 32'. . When two fixing holes 32, 32' are provided, the joining plate 66 is connected to 70 to 80% of the inclined sides of the inclined flat plate part 28. Further, it is fixed by six sets of bolts and nuts 10 to 14 and 10' to 14' in accordance with the fixing holes 32 and 32'.

In addition, in this embodiment, although the aspect which does not have a bending support plate was described, it is preferable to have a bending support plate. In this case, the bending support plate has two fixed angle members X3, Y3, and Z3. A structure having two insertion holes (four in total in the bending support plate) corresponding to the holes 32 and 32' may be used, or a total of six bending support plates may be used.

In the structural member joining structure 3 according to the third embodiment of the present invention described above, the joining plate of the angle members X3, Y3, and Z3 is provided with two fixing holes 32, 32', and the fixing holes 32, 32' Since the angle members X3, Y3, and Z3 are fixed with six sets of bolts and nuts 10 to 14 and 10' to 14' while being inserted into the angle member, the angle members X3, Y3, and Z3 can be joined with more stability and high strength.

A structure was manufactured in which the corner portions were provided with the joining structure of the structural members of the present invention.
The structural members include an angle member made of general structural rolled steel with an L-shaped cross section of 100 mm in length, equipped with inclined plates and joint plates at both ends, and an 80 mm long cross section with inclined plates and joint plates at both ends. Equilateral angle members made of general structural rolled steel and 24 bolts and nuts were used. Note that all the angle members used had the same width.

FIG. 9 shows a photograph of the structure seen from the outside, and FIG. 10 shows a photograph of the corner seen from the inside of the structure. As shown in FIGS. 9 and 10, the structure in which the structural member joining structure of the present invention is provided at the corners is formed into a rectangular parallelepiped, and the angle members do not shift from each other even when subjected to strong vibrations. It was confirmed that all the angle members were firmly and accurately joined in the XYZ directions. It has been found that according to the structural member joining structure of the present invention, three structural members extending in the XYZ directions can be joined with stable and high strength without using welding.

(Reference example)
Next, a reference example of a joining structure of structural members by welding using structural members including structural members partially similar to the structural member of the present invention will be described.
In the joint structure of structural materials (angle materials) according to the reference example,
A structural material main body having adjacent flat plate portions bent at right angles, and a tip provided at the front of the structural material main body and inclined from both outer edges of the adjacent flat plate portions bent at right angles toward the central bent portion. three structural members each comprising: an inclined plate having adjacent inclined flat plate portions each forming an apex angle;
A structural member joining structure in which the three structural members are each extended in the XYZ direction to form a corner of the structure,
The inclined sides of the inclined flat plate parts of the inclined plates of the three structural members are brought into contact with each other, and the ends of the three structural members are butted together so that the three structural members extend in the XYZ directions, respectively.
A right angle is formed between the apex angle of the tip of the inclined flat plate part erected in the Z direction of the structural member in the X direction and the apex angle of the tip of the inclined flat plate part erected in the X direction of the structural member in the Z direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the X direction, which stands up in the Y direction, and the apex angle of the tip of the inclined flat plate part, which stands up in the X direction of the structural member in the Y direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the Y direction, which is erected in the Z direction, and the apex angle of the tip of the inclined flat plate part, which is erected in the Y direction of the structural member in the Z direction,
The three structural members are joined by welding the inclined sides of the inclined flat plate portions of the inclined plates of the three structural members.

Here, FIG. 11 is a schematic diagram of a joining structure of structural members by welding according to a reference example. FIG. 12 is a schematic diagram of a conventional joining structure of structural members by welding. Note that the structural material main body and the inclined flat plate part of the inclined plate of the structural material joining structure according to the reference example have the same configuration as the structural material main body of the structural material and the inclined flat plate part of the inclined plate of the structural material joining structure of the present invention. It is a member.

As shown in FIG. 11, in the welded structural member joining structure according to the reference example, the inclined sides of the inclined flat plate portions of the inclined plates of the three structural members are in contact with each other, and the three structural members are each extended in the XYZ directions. The three structural members are joined by welding the inclined sides of the inclined flat plate portions of the inclined plates of the three structural members with the ends of the three structural members butted against each other, Thereby, the three structural members extending in the XYZ directions can be joined with stable and high strength, and the corner of the structure can be formed with stable and high strength. In particular, since the contact portions between the structural members are long, assembly accuracy is improved. Furthermore, compared to the conventional joining structure of structural members (angle members) shown in FIG. 12, the total welding length is reduced by 20%, so work efficiency can be improved. Moreover, since all the members can be manufactured by the same processing, the manufacturing process can be simplified and manufacturing costs can be suppressed.

The joining structure for structural members of the present invention is industrially useful because it can form corners of a structure.

1 Joint structure of structural materials (first embodiment)
2 Joint structure of structural materials (second embodiment)
3 Joint structure of structural materials (third embodiment)
10, 10' Bolts and nuts 12, 12' for fixing angle members in the X direction and Z direction Bolts and nuts 14, 14' for fixing angle members in the X direction and Y direction Fixing angle members in the Y direction and Z direction Bolts and nuts that support the angle material 16 Bent support plate that supports the angle material Inclined plates 32, 32' fixing hole 34 joint plate 36 edge turning part 38 inclined plate 40 joint plate 42 bent support plate flat part 44 insertion hole 46 bent part 48 metal plate 49 fastener insertion hole 50 inclined plate 52 inclined flat plate part 54 inclination Plate 56 Flat plate part 58 Inclined plate 60 Flat plate part 62 Inclined flat plate part 64 Inclined flat plate part 66 Joint plate X1, X2, X3 Angle material in the X direction Y1, Y2, Y3 Angle material in the Y direction Z1, Z2, Z3 Angle in the Z direction material

Claims (10)

three sets of fixtures each comprising a bolt and a nut;
A structural material main body having adjacent flat plate portions bent at right angles, and a tip provided at the front of the structural material main body and inclined from both outer edges of the adjacent flat plate portions bent at right angles toward the central bent portion. a sloped plate having adjacent sloped flat plate parts forming an apex angle at each side; three structural members each having a joining plate having a fixing hole through which a fixing device can be inserted;
A structural member joining structure in which the three structural members are each extended in the XYZ direction to form a corner of the structure,
The inclined sides of the inclined flat plate parts of the inclined plates of the three structural members are brought into contact with each other, and the ends of the three structural members are butted together so that the three structural members extend in the XYZ directions, respectively.
A right angle is formed between the apex angle of the tip of the inclined flat plate part erected in the Z direction of the structural member in the X direction and the apex angle of the tip of the inclined flat plate part erected in the X direction of the structural member in the Z direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the X direction, which stands up in the Y direction, and the apex angle of the tip of the inclined flat plate part, which stands up in the X direction of the structural member in the Y direction,
A right angle is formed between the apex angle of the tip of the inclined flat plate part of the structural member in the Y direction, which is erected in the Z direction, and the apex angle of the tip of the inclined flat plate part, which is erected in the Y direction of the structural member in the Z direction,
A joining structure for structural members, characterized in that the three structural members are joined by inserting and fixing the bolts and nuts into the fixing holes of the structural members. A joining structure of structural members further using at least three bending support plates,
The bending support plate includes adjacent flat plate portions bent at 120° and insertion holes formed in each of the flat plate portions through which the fixing devices are inserted,
The three bent support plates are arranged so that each bent part is close to an inward center line passing through the apex of the corner formed by the three structural members, and corresponds to each of the three structural members. arranged circumferentially,
2. The joining structure for structural members according to claim 1, wherein a fixture is inserted and fixed through the insertion hole of the bending support plate and the fixing hole of the structural member. A pair of joint plates provided on the structural members are each extended, and the extended ends are adjacent to each other and in contact with each other at an inward center line passing through the apexes of the corners formed by the three structural members. The joining structure of structural materials according to claim 1, wherein the joining structure is bonded or bonded. 2. The joining structure of structural members according to claim 1, wherein the apex angle of the tips of the inclined flat plate portions of the inclined plates of the three structural members in the XYZ directions is 45°. Claim characterized in that the structural member has two or more fixing holes for one inclined flat plate part, and includes a fixing tool that is inserted and fixed in the two or more fixing holes. A joining structure of the structural materials described in 1. 2. The structural material joining structure according to claim 1, wherein the structural material main body is a member having an L-shaped cross section and a predetermined length. 2. The structural material joining structure according to claim 1, wherein the structural material main body is provided with an elongated member fixing part for fixing three elongated members extending in the XYZ directions behind the structural material main body. A claim characterized in that a fastener insertion hole for inserting a fastener for fastening the bolt and nut is provided in the structural material main body that intersects with the center line of the fixing hole of the joint plate of the structural material. A joining structure of the structural materials described in 1. 2. The structural member joining structure according to claim 1, wherein the structural member is formed by bending a single metal plate. A structure comprising the joining structure according to any one of claims 1 to 9 at a corner.