JP2005213891A - Joint metal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint metal capable of realizing a rigid joint structure in the joint metal for joining a plurality of members. <P>SOLUTION: In the joint metal, which has polygonal sectional hollow sections 31 having at least one angular section formed of two sides having an equal length and connecting pieces 32 formed outside the angular sections and in which the hollow sections 31 are fitted externally to column materials 10A and 10B as first members and beam materials 20 as second members are connected to the connecting pieces 32. In the joint metal, the connecting pieces 32 are formed on the bisectors of the interior angles of the angular sections of the hollow sections 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a metal joint for joining a plurality of members.

  As shown in FIG. 11, as a joint structure of a column member and a horizontal member (beam member, beam member, etc.), a member formed by joining column members 110 </ b> A and 110 </ b> B and a beam member 120 via a joint metal 130. It is known (see Patent Document 1). The joint metal 130 having this joint structure has a hollow section 131 having a square cross section and a connecting piece 132 projecting from a side plate 131a of the hollow section 131. The hollow section 131 is an end of the column members 110A and 110B. The connecting piece 132 is connected to the end of the beam member 120.

JP-A-8-284250 (all pages)

  By the way, in order to effectively transmit the load acting on the horizontal member 120 to the column member 110, it is necessary to make the joint portion between the column member 110 and the horizontal member 120 rigid. Even if it is rigidly joined to the piece 132, as shown in FIG. 12, the tensile force F acts on the connecting piece 132 due to the load acting on the horizontal member 120, and the side plate 131 a of the hollow portion 131 is deformed. Therefore, the joint portion cannot be made completely rigid, and is substantially close to pin joint. That is, even if a ramen structure is formed using such a joint structure, it does not actually become a complete ramen structure, but becomes mechanically unstable.

  Moreover, it can be said that this problem applies not only to the joint structure between the column and the horizontal member but also to the joint structure between the horizontal members.

  Accordingly, an object of the present invention is to provide a metal joint for joining a plurality of members, and capable of realizing a rigid joint structure.

  The invention of claim 1 devised to solve such problems includes a hollow section having a polygonal cross section having at least one corner formed by two sides having the same length, and an outer side of the corner. A connecting piece formed, wherein the hollow portion is externally fitted to the first member, and the second member is a joint metal connected to the connecting piece, the connecting piece being an inner corner of the corner portion. It is formed on an equal line.

  According to such a metal fitting, since the deformation of the hollow portion becomes extremely small when a tensile force acts on the connecting piece, it is possible to realize a rigid joint between the first member and the second member as a result. That is, since the connecting piece is formed on the bisector of the inner corner of the corner of the hollow portion, when a tensile force acts on the connecting piece, the tensile force constitutes two sides forming the corner of the hollow portion. Acts on the plate, and as a result, the other corners adjacent to the corners try to deform toward the inside of the hollow part, but the hollow part is externally fitted to the first member. Supports the deformation of the hollow portion. Here, the first member is a member erected vertically such as a pillar material, a floor bundle, a shed bundle, but is not limited to this. The second member is a member having a different axial direction from that of the first member. For example, if the first member is a column member, a beam member having an axial direction different from that of the column member is different from the second member. Become.

  The invention of claim 2 is the metal joint according to claim 1, wherein the first member has a fitting portion on which the hollow portion is externally fitted and a main body portion continuous with the fitting portion. The inner surface shape of the hollow part is the same as the outer surface shape of the fitting part.

  According to such a metal fitting, since there is no gap between the hollow portion and the fitting portion of the first member, deformation such that other corner portions adjacent to the corner portion where the tensile force acts is prevented.

  The invention according to claim 3 is the metal joint according to claim 2, wherein the hollow portion is interposed at a boundary portion between the two first members, and one opening side of the hollow portion is the one of the first members. It is fitted on the fitting part of one member, the other opening side of the hollow part is fitted on the fitting part of the other first member, and the hollow part is fitted on the fitting parts of the first members. When this is done, the fitting portions of the first members are in contact with each other.

  According to such a metal joint, the inside of the hollow portion becomes completely solid due to the fitting portions of the two first members, so that the hollow portion is hardly deformed.

  A fourth aspect of the invention is the metal joint according to the second or third aspect, wherein the fitting portion of the first member is formed by cutting an end portion of the main body portion. .

  According to such a metal fitting, since only the fitting portion of the first member has to be processed according to the cross-sectional shape of the hollow portion, the degree of freedom of the dimensional shape of the main body portion of the first member increases.

  A fifth aspect of the present invention is the joint hardware according to any one of the second to fourth aspects, wherein the decorative portion has the same shape as the outer surface shape of the main body portion of the first member around the hollow portion. It is characterized by having.

  According to such a joint hardware, the main body portion of the first member and the decorative portion are flush with each other, so that the aesthetic appearance is not impaired, and when the wall material or other member is attached, this joint hardware is an obstacle. Nor.

  Invention of Claim 6 is a joining metal fitting as described in any one of Claim 1 thru | or 5, Comprising: A said 1st member is a pillar material, A said 2nd member is a beam material or a beam material. It is characterized by that.

  According to such a joint hardware, it is possible to rigidly join the column member and the beam member or the beam member. In other words, a structure constructed using this joint metal has a perfect ramen structure because the joints between members such as joints and joints are rigidly joined. For example, in the conventional wooden frame structure, since the joint portion was not completely rigid, a reinforcement member such as a streak was required for earthquake resistance, but the joint hardware according to the present invention was made into a wooden frame structure or the like. If it is adopted, the joint becomes rigid, so that it is possible to easily construct a structure having high earthquake resistance without arranging reinforcing members such as struts. In addition, since the structure using the joint metal does not require a reinforcing member such as a streak, the opening can be made large.

  The invention of claim 7 has a hollow section having a polygonal cross section having at least two corners formed by two sides having the same length, and at least two connecting pieces formed outside each of the corners. The filling member is inserted into the hollow portion, and the end of the horizontal member is connected to each connecting piece, and each connecting piece is on the bisector of the inner angle of the corner portion. It is characterized by being formed.

  According to such a metal fitting, since the deformation of the hollow portion becomes extremely small when a tensile force acts on the connecting piece, it is possible to realize a rigid joint between the horizontal members as a result. That is, since the connecting piece is formed on the bisector of the inner angle of the corner of the hollow portion, when a tensile force acts on the connecting piece, the tensile force is applied to the two tension plates that form the corner of the hollow portion. As a result, the other corner portion adjacent to the corner portion tends to be deformed toward the inside of the hollow portion, but since the filling member is inserted into the hollow portion, the filling member is As a compression member, deformation of the hollow portion is prevented. Here, the horizontal member refers mainly to a member arranged horizontally such as a beam member or a beam member, but also includes a member arranged inclined such as a rafter.

  An eighth aspect of the invention is the bonded metal fitting according to any one of the first to seventh aspects, wherein the hollow portion has an equilateral polygonal cross-sectional shape.

  According to such a metal joint, since it is possible to provide connecting pieces at all corners of the hollow portion, versatility as a metal joint is improved.

  A ninth aspect of the present invention is the bonded metal fitting according to any one of the first to seventh aspects, wherein the hollow portion has a square or rhombus cross-sectional shape.

  According to such a joint metal, since it becomes easy to form the connecting piece provided in the hollow part on the bisector of the corner part, it becomes easy to manufacture the joint metal.

  A tenth aspect of the present invention is the metal joint according to any one of the first to ninth aspects, characterized by comprising an extruded shape made of an aluminum alloy.

  According to such a metal joint, since the dimensions do not change due to moisture corrosion or the like, it is possible to construct a joint structure in which loosening and rattling are unlikely to occur.

  According to the metal joint according to the present invention, a plurality of members can be rigidly joined. As a result, a structure free from looseness and rattling can be constructed. Therefore, for example, in the case of a wooden building, it becomes possible to greatly reduce the reinforcing members such as streaks.

  In addition, when the decorative portion is provided around the hollow portion, it is possible to eliminate the difference in appearance from the first member or the like in the joint portion, and it is very strong while there is no difference in appearance. It becomes possible to construct a structure.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, the metal joint 30 according to the present embodiment includes column members 10 </ b> A and 10 </ b> B that are first members, and a beam member 20 that is a second member having a different axial direction from the column members 10 </ b> A and 10 </ b> B. It is what is joined. Here, the column member 10A is a tube pillar on the lower floor side, and the column member 10B is a tube pillar on the upper floor side.

  As shown in FIG. 2, the column member 10A is made of wood, and includes a fitting portion 11A exhibiting a regular quadrangular column and a main body portion 12A having a square cross section continuous to the lower side of the fitting portion 11A. Yes. In other words, it can be said that the column member 10A includes a columnar main body portion 12A and a fitting portion 11A protruding from the upper end surface of the main body portion 12A. Further, as shown in FIG. 3A, the fitting portion 11A has an end of the main body portion 12A so that the bisector 11b of the inner corner 11a of the corner portion is orthogonal to the side (side surface) 12a of the main body portion 12A. It is formed by cutting a part. As a result, the bisector 11b of the inner corner 11a of the fitting portion 11A is along the longitudinal direction of the beam member 20 (see FIG. 2).

  As shown in FIG. 2, the column member 10 </ b> B includes a fitting portion 11 </ b> B and a main body portion 12 </ b> B having a square cross section that is continuous above the fitting portion 11 </ b> B. In other words, it can be said that the column member 10B includes a columnar main body portion 12B and a fitting portion 11B protruding from the lower end surface of the main body portion 12B. In addition, since the structure of the fitting part 11B is the same as that of the fitting part 11A of 10 A of pillar materials, the detailed description is abbreviate | omitted.

  The column members 10A and 10B are not limited to wooden ones, and may be ones using an extruded shape made of aluminum alloy, a steel pipe, or the like. In addition, the column member 10A (10B) according to the present embodiment has the fitting portion 11A (11B) and the main body portion 12A (12B) integrally formed, but it is different if both are firmly integrated. It may be formed of a member.

  As shown in FIG. 2, the beam member 20 is a combination of two lip groove steels 21 and 21. Bolt insertion holes 21 a and 21 a are formed at the end of the lip groove steel 21 side by side. Note that the beam member 20 is not limited to the illustrated one, and may be, for example, a single H-shaped steel or I-shaped steel, or a connecting piece 32 of a joint hardware 30 described later can be inserted. Even an extruded shape made of wood or aluminum alloy having a slit at the end may be used.

  As shown in FIG. 2, the metal joint 30 includes a hollow portion 31 having a square cross section (equal polygon), a connecting piece 32 formed outside the corner portion of the hollow portion 31, and the hollow portion 31. The hollow portion 31 is externally fitted to the fitting portions 11A and 11B of the column members 10A and 10B, and the beam member 20 is connected to the connecting piece 32. Connected. Moreover, the metal joint 30 is made of an extruded shape made of an aluminum alloy, and as shown in FIG. 4, the height dimension thereof is the height of the fitting portion 11A of the column member 10A and the fitting portion of the column member 10B. It is made the same as what combined the height dimension of 11B.

  The hollow portion 31 is formed in a square tube shape by four tension plates 31c having the same width dimension, and the inner surface shape thereof is the same as the outer surface shape of the fitting portions 11A and 11B of the column members 10A and 10B. That is, the hollow portion 31 is formed so as to be fitted onto the fitting portions 11A and 11B of the column members 10A and 10B. When the hollow portion 31 is fitted onto the fitting portions 11A and 11B, the inside of the hollow portion 31 is formed. The truss mechanism T (see FIG. 5), which will be described later, is formed. In other words, the hollow portion 31 is interposed at the boundary portion between the two column members 10A and 10B, and one opening side (lower half) of the hollow portion 31 is the fitting portion 11A of the one column member 10A (lower side). The other opening side (upper half) of the hollow portion 31 is externally fitted to the fitting portion 11B of the other (upper) column member 10B. Further, when the hollow portion 31 is externally fitted to the fitting portions 11A and 11B of the column members 10A and 10B, the upper end surface of the fitting portion 11A of the column member 10A and the lower end surface of the fitting portion 11B of the column member 10B Abut (see FIG. 4). As shown in FIG. 3B, the corner portion 31d of the hollow portion 31 is an intersection (boundary portion) between the adjacent tension plates 31c and 31c. In other words, the joint hardware 30 is viewed in plan (sectional view). ) Is a portion formed by two adjacent sides having the same length. In the present embodiment, since the width dimensions of the four tension plates 31c are all equal, the hollow portion 31 includes four corner portions 31d formed by two sides having the same length.

  The connecting piece 32 protrudes outside the corner portion of the hollow portion 31, and bolt insertion holes 32 a and 32 a corresponding to the bolt insertion holes 21 a and 21 a of the lip groove steel 21 are arranged vertically at a substantially central portion thereof. It is formed with. 3B, the connecting piece 32 is formed on the bisector 31b of the inner corner 31a of the hollow portion 31, and the hollow portion 31 is fitted to the fitting portions 11A of the column members 10A and 10B. , 11B, they are arranged perpendicular to the side surfaces of the main body portions 12A, 12B (see FIG. 1). In addition, in this embodiment, although the connection piece 32 was formed in all the four corner | angular parts 31d of the hollow part 31, it is not limited to this, The connection piece 32 is only in the direction where the beam material 20 is connected. Of course, it may be formed.

  As shown in FIG. 1, the decorative portion 33 has the same outer surface shape as the outer surface shape of the main body portions 12A and 12B of the column members 10A and 10B, and the hollow portion 31 is a fitting portion of the column members 10A and 10B. When externally fitted to 11A and 11B, it becomes flush with the main body portions 12A and 12B. Since the decorative portion 33 does not actively bear a load, the size and shape of the decorative portion 33 can be set relatively freely. Therefore, not only the role of “decoration” but also the structural material It is possible to have various roles convenient for attaching the finishing material and finishing material. For example, if two surfaces orthogonal to the decorative portion 33 are formed, it is convenient for positioning and the like at the time of attaching a structural material or a finishing material.

  Next, an example of a method for constructing a joint structure using the joint hardware 30 according to the present embodiment will be described. In order to construct this joining structure, as shown in FIG. 2, first, the column material 10 </ b> A on the lower floor side is erected on a base (not shown) and the like, and then the fitting 30 is attached to the fitting portion 11 </ b> A. The hollow portion 31 is externally fitted, and then the fitting portion 11B of the column member 10B on the upper floor side is fitted and inserted into the hollow portion 31 of the joint hardware 30, and then the beam material 20 is connected to the connecting piece 32 of the joint hardware 30. do it. Here, in order to connect the beam member 20 to the connecting piece 32 of the metal joint 30, the connecting piece 32 of the metal joint 30 is sandwiched between the two lip groove steels 21 and 21 constituting the beam member 20. The bolts B and B may be inserted into the bolt insertion holes 21a and 21a of the lip groove steel 21 and the bolt insertion holes 32a and 32a of the connecting piece 32 and fastened with nuts N and N.

  In addition, the construction method of the joining structure is not limited to the above-described method, and may be changed as appropriate. For example, after connecting the beam member 20 to the connecting piece 32 of the metal joint 30, the hollow portion 31 of the metal joint 30 is externally fitted to the fitting portion 11A of the column member 10A, and then the fitting portion 11B of the column member 10B. The joint structure may be constructed by a procedure that is inserted into the hollow portion 31 of the joint hardware 30.

  The joint hardware 30 according to the present embodiment is configured as described above, and, as shown in FIG. 5, due to a bending moment M (see FIG. 1) generated near the end of the beam member 20, or a column. Two tension plates 31c and 31c forming the corner portion 31d of the hollow portion 31 by the tensile force F generated in the connecting piece 32 due to the horizontal load acting on the members 10A and 10B (see FIG. 2) and the beam member 20 Forces FT and FT are generated at the same time, and at the same time, forces FC and FC are generated to cause the other corners 31d ′ and 31d ′ adjacent to the corner 31d to approach each other to be deformed. Is externally fitted to the fitting portions 11A and 11B of the column members 10A and 10B (see FIG. 2), and the inside of the hollow portion 31 is made dense by the fitting portions 11A and 11B. Supports deformation of hollow part 31 Is will be.

  From another point of view, due to the tensile force F acting on the connecting piece 32 of the metal joint 30, the fitting portions 11A and 11B of the column members 10A and 10B (see FIG. 2) have corners of the hollow portion 31. The force FC acts on a region P (hereinafter referred to as “compression field P”) connecting the corner portions 31d ′ and 31d ′ located adjacent to the portion 31d. This means that the compression force is applied to the tension plates 31c and 31c. This means that the truss mechanism T having an isosceles triangle is formed by the field P, and the tensile force F is supported by the truss mechanism T. That is, the bending rigidity of the tension plate 31c of the hollow portion 31 does not counter the tensile force F, but the truss mechanism T is formed together with the fitting portions 11A and 11B to counter the tensile force F. The deformation is extremely small.

  As shown in FIG. 1, when a bending moment M in the direction of the arrow is generated near the end of the beam member 20, the connecting piece 32 of the metal joint 30 has a tensile force due to the bending moment M. In addition to F, a compressive force F ′ acts, but the fitting portion 11A (11B) inserted into the hollow portion 31 resists the compressive force F ′, and the hollow portion 31 is deformed. Suppress. That is, as shown in FIG. 6, when a compressive force F ′ acts on the connecting piece 32, a compression field P ′ is formed in a region connecting the corners 31 d and 31 d ″ of the hollow portion 31.

  Thus, even when the tensile force F and the compressive force F ′ caused by the bending moment M of the beam member 20 are applied to the joint hardware 30, the tensile force F is orthogonal to the direction of action. A compression field P for resisting the tensile force F in the direction is formed and resisted. For the compression force F ′, a compression field P ′ for resisting the compression force F ′ is formed along the acting direction. Therefore, the deformation of the hollow portion 31 is extremely small.

  And that the deformation of the hollow portion 31 is extremely small means that the column members 10A and 10B and the beam member 20 are rigidly joined. That is, according to the joint hardware 30 according to the present embodiment, the column members 10A and 10B and the beam member 20 can be rigidly bonded. As a result, the bending moment or the like acting on the beam member 20 can be changed to the column member 10A. , 10B.

  Further, as shown in FIG. 5, since the connecting piece 32 is formed on the bisector of the inner corner of the corner portion 31 d of the hollow portion 31, the tensile force F acting on the connecting piece 32 is the tensile plate of the hollow portion 31. The force FT and FT act equally on 31c and 31c, respectively. That is, since the tensile force F applied to the connecting piece 32 can be dispersed in a balanced manner, a mechanically stable joint structure can be realized.

  Further, since the hollow portion 31 of the metal fitting 30 is tightly fitted to the fitting portions 11A and 11B of the column members 10A and 10B, the connection between the column members 10A and 10B becomes rigid. The column members 10A and 10B exhibit the same function as the through column.

  In addition, although the hollow part 31 of the metal joint 30 which concerns on this embodiment is formed so that the whole inner surface may contact | abut to the outer surface of fitting part 11A, 11B of pillar material 10A, 10B, it is not necessarily the whole inner surface. There is no need to contact the outer surfaces of the fitting portions 11A and 11B. For example, although not shown, the inner surfaces near the other corner portions 31d ′ and 31d ′ located next to the connecting piece 32 (corner portion 31d) on which the tensile force F acts are in contact with the outer surfaces of the fitting portions 11A and 11B. If they are in contact with each other, the compression field P is formed in the fitting portions 11A and 11B, so that it can resist the tensile force F, and similarly, the corner portion on which the compression force F ′ (see FIG. 6) acts. If the inner surface in the vicinity of 31d and the inner surface in the vicinity of the corner portion 31d ″ opposite to the corner portion 31d are in contact with the outer surfaces of the fitting portions 11A and 11B, a compression field P ′ is formed in the fitting portions 11A and 11B. Therefore, it is possible to resist the compressive force F ′.

  As described above, according to the metal joint 30 according to the present embodiment, the column members 10A and 10B and the beam member 20 can be rigidly joined. And the structure constructed | assembled using this joining metal fitting 30 becomes a perfect ramen structure since a column beam will be joined firmly. That is, if such a joint structure is employed in a wooden frame structure or the like, it is possible to easily construct a structure having high seismic performance without arranging reinforcing members such as struts and cheeks. In other words, a structure using such a joint structure does not require a reinforcing member such as a streak or a cheek.

  Further, as shown in FIG. 1, the metal fitting 30 has a decorative portion 33 that is flush with the main body portions 12A and 12B of the column members 10A and 10B. It does not get in the way when attaching the member.

  Further, since the hollow portion 31 of the metal joint 30 is filled with the fitting portions 11A and 11B of the column members 10A and 10B without gaps, the hollow portion 31 is hardly deformed.

  Further, since the metal joint 30 is made of an aluminum alloy extruded shape, its manufacture becomes easy, and furthermore, its manufacturing accuracy is high and it is resistant to corrosion, so that loosening and rattling are unlikely to occur. A joined structure can be obtained.

  In the present embodiment, as shown in FIG. 3 (b), the metal joint 30 is formed on a bisector 31b of a hollow portion 31 having a square cross section and an inner corner 31a of the corner portion 31d. Although the thing which has the connection piece 32 was illustrated, it is not limited to this, Although illustration is abbreviate | omitted, the cross-sectional shape of a hollow part is equilateral polygons, such as a rhombus and a regular polygon (The length of each side is equal) Polygon), and a connecting piece may be formed on the bisector of the inner angle of the hollow portion. In this case, the outer surface shape of the fitting portion of the column member is made to correspond to the inner surface shape of the hollow portion of the metal joint. Moreover, the cross-sectional shape of the hollow portion is not limited to an equilateral polygon. That is, the cross-sectional shape of the hollow portion does not have to be an equilateral polygon as long as the corner portion where the connecting piece is formed is formed by two sides having the same length, and a triangular shape (see FIG. 7A). ), Pentagons (see FIG. 7B), hexagons, and other suitable polygons can be selected in accordance with the shape of the connected column members, the number of beam members, and the like. For example, when the cross-sectional shape of the hollow portion 31 ′ is an isosceles triangle like the joint metal 30 ′ shown in FIG. 7A, the connecting piece is only at the corner portion formed by two sides having the same length. 32 'may be formed and the beam member 20 may be connected to only this one connecting piece 32'. Further, in the case where the cross-sectional shape of the hollow portion 31 ″ is a pentagon like the joint metal 30 ″ shown in FIG. 7B, the connecting piece 32 ″ is formed only at the corner formed by two sides having the same length. And the beam member 20 may be connected to only this one connecting piece 32 ″. In addition, the corner | angular part in which a connection piece is not formed does not need to be formed by two sides with equal length.

  Moreover, in this embodiment, as shown in FIG. 2, fitting part 11A, 11B is provided in pillar material 10A, 10B, and the structure which externally fits the hollow part 31 of the metal fitting 30 to this fitting part 11A, 11B. However, the present invention is not limited to this, and illustration is omitted. Of course, a structure in which the hollow portion of the joint metal fitting is directly fitted to the main body portion without providing the fitting portion on the column member may be used.

  Furthermore, in this embodiment, although the joining hardware 30 has been arrange | positioned in the boundary part of the pipe pillar (column material 10A) of a lower floor and the pipe pillar (column material 10B) of an upper floor, it is limited to this. As shown in FIG. 8, the metal joint 30 may be disposed at the upper end of the column member 10B ′. Furthermore, although illustration is omitted, a metal joint may be disposed at the end or intermediate portion of the through pillar. Of course.

  Moreover, in this embodiment, although the case where the 1st member is pillar material 10A, 10B and the 2nd member is the beam material 20 orthogonal to pillar material 10A, 10B which is a 1st member was illustrated, for example, FIG. Of course, the second member may be a member 20 'obliquely intersecting with the column member 10B' as the first member. That is, for example, the columnar material (first member) and the strut (second member) can be rigidly joined by the joining hardware 30.

  In addition, although illustration is abbreviate | omitted, the hollow part 31 of the joining metal fitting 30 is inserted and inserted into bundle materials, such as a floor bundle and a shed bundle, without being limited to column materials, such as a pipe pillar and a through pillar, and a large drawing and a rafter are connected to the connection piece 32 May be.

  Moreover, in this embodiment, although the case where the column materials 10A and 10B and the beam material 20 were joined using the hollow part 31 and the connection piece 32 of the joining metal fitting 30 was illustrated, as shown in FIG. The beam members 20 and 20 may be joined to each other using the two connecting pieces 32 and 32. In this case, the filling member 40 having the same outer surface shape as the inner surface shape is fitted into the hollow portion 31. The filling member 40 is not limited in its material, but it is required that the inside is solid. Further, the filling member 40 may be a part of another member, and may be fixed to the upper surface of a base or a beam material, for example.

  Even when the metal fitting 30 is used in this manner, the filling member 40 is inserted into the hollow portion 31 when the tensile force F acts on the connecting piece 32. The deformation of the hollow portion 31 is suppressed by the support 40, and as a result, the deformation of the hollow portion 31 becomes extremely small. That is, even when the beam members 20 and 20 are joined together using the connecting pieces 32 and 32, a truss mechanism is formed when the tensile force acts on the connecting piece 32 (see FIG. 5), and the hollow The deformation of the portion 31 is extremely small. In other words, the beam members 20 and 20 are rigidly joined by the joint hardware 30.

  In addition, in FIG. 10, it cannot be overemphasized that the other beam materials 20 and 20 may be further connected to the connection pieces 32 and 32 to which the beam materials 20 and 20 are not connected.

  Further, as described above, the cross-sectional shape of the hollow portion is not limited to an equilateral polygon, but when joining a plurality of beam members using two or more connecting pieces, the hollow portion It is necessary to have at least two corners formed by two sides having the same length, and it is necessary that a connecting piece is formed at the corner.

  Further, the member connected to the coupling piece 32 is not limited to a horizontal member arranged horizontally like the beam member 20, and although not shown in the drawings, a horizontal member arranged inclined such as a rafter. Even wood can be used. For example, it is also possible to use the joint hardware 30 when joining rafters in a building ridge.

It is a perspective view which shows the joining structure constructed | assembled using the joining metal fitting which concerns on this invention. It is an exploded perspective view similarly. (A) is an end view of a column material, (b) is an end view of a metal joint. It is a front view which shows the joining structure constructed | assembled using the joining metal fitting which concerns on this invention. It is XX sectional drawing of FIG. 4, Comprising: It is a figure which shows the state in which the tensile force acted on the connection piece. It is YY sectional drawing of FIG. 4, Comprising: It is a figure which shows the state in which the compressive force acted on the connection piece. (A) is sectional drawing which shows the modification of a joining metal fitting, (b) is sectional drawing which shows the other modification of a joining fitting. It is a front view which shows the usage example of the joining metal fitting which concerns on this invention. It is a front view which shows the other usage example of the joining metal fitting which concerns on this invention. It is a perspective view which shows the further another usage example of the joining metal fitting which concerns on this invention. It is a disassembled perspective view which shows the conventional joining metal fitting. It is sectional drawing of FIG. 11, Comprising: It is a schematic diagram which shows the state in which the tensile force acted on the connection piece.

Explanation of symbols

10A, 10B Column material 11A, 11B Fitting part 12A, 12B Main body part 20 Beam material 30 Metal fitting 31 Hollow part 31d Corner part 32 Connecting piece 33 Decoration part 40 Filling member

Claims (10)

A hollow portion having a polygonal cross section having at least one corner formed by two sides having the same length, and a connecting piece formed outside the corner, the hollow portion being external to the first member Fitted and the second member is a joint metal connected to the connecting piece,
The joining piece is formed on a bisector of an inner angle of the corner portion. The first member has a fitting part to which the hollow part is fitted and a main body part continuous to the fitting part,
2. The metal joint according to claim 1, wherein an inner surface shape of the hollow portion is the same as an outer surface shape of the fitting portion. The hollow portion is interposed at a boundary portion between the two first members,
One opening side of the hollow part is externally fitted to the fitting part of one of the first members, and the other opening side of the hollow part is externally fitted to the fitting part of the other first member,
3. The metal joint according to claim 2, wherein when the hollow portion is externally fitted to the fitting portions of the first members, the fitting portions of the first members are in contact with each other.   The fitting according to claim 2 or 3, wherein the fitting portion of the first member is formed by cutting an end portion of the main body portion.   The joint hardware according to any one of claims 2 to 4, wherein a decoration part having the same shape as the outer surface shape of the main body part of the first member is provided around the hollow part.   6. The metal joint according to claim 1, wherein the first member is a column member, and the second member is a beam member or a girder member. A hollow portion having a polygonal cross section having at least two corners formed by two sides having the same length, and at least two connecting pieces formed on the outer sides of the corners; The filling member is inserted, and the end of the horizontal member is a joint metal piece connected to each connecting piece,
Each of the connecting pieces is formed on a bisector of an inner angle of the corner portion.   The metal fitting according to any one of claims 1 to 7, wherein the hollow portion has an equilateral polygonal cross-sectional shape.   The metal fitting according to any one of claims 1 to 7, wherein the hollow portion has a square or rhombus cross-sectional shape.   The joint metal article according to any one of claims 1 to 9, wherein the joint metal article is formed of an extruded shape made of an aluminum alloy.

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