Building connection fitting

Abstract

To provide an epoch-making joint metal fitting for construction, which is highly practical in that, even when a rotation force is generated in each joint metal fitting due to a shear force and a secondary stress is generated in a connector 6, this is offset by the locking of locking portions, thereby suppressing the number of connectors generating the secondary stress, and suppressing the decrease in joint rigidity due to the suppression of rotation, thereby suppressing the decrease in shear proof strength, and which can be realized with a simple structure.SOLUTION: Provided is a joint metal fitting for construction. When an upper locking portion 9 is provided on an upper portion of ta base portion side of a connecting protruding plate portion 7 that is connected to a cross member 2, a lower locking portion 10 is provided on a lower portion of the base portion side, and the joint metal fittings are arranged vertically in parallel according to the beam configuration, the upper locking portion 9 and the lower locking portion 10 are locked together.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a building fitting for joining one column or horizontal member (beam) by butting the ends to join the other horizontal member (beam). For example, a connecting substrate portion is fixed to the joining-side surface of one column or beam by a fixture (a fastening bolt for passing through), and a connecting projecting plate portion projecting from the connecting substrate portion is inserted and disposed in the joint portion of the end of the other beam whose ends are butted and joined. A connecting tool (drift pin) is passed through the joint portion to connect the one column or beam and the other beam.

Background Art

[0002] For example, when joining one column and the other horizontal member (beam), building fittings are frequently used. This fitting is, for example, a fitting in which one or more connecting projecting plate portions are projected in a T-shape, U-shape, or C-shape in plan view on a metal connecting substrate portion. For example, this connecting substrate portion is fixed to the joining-side surface of one column by a fixture (a fastening bolt for passing through the column), and the connecting projecting plate portion projecting from this connecting substrate portion is inserted and disposed in the vertical through slit of the joint portion of the end of the other beam. A connecting tool (drift pin) is passed through the connecting hole provided in this connecting projecting plate portion and the through hole provided in the joint portion of the end of the beam in communication with this to connect the one column and the other beam firmly.

[0003] As such fittings, those of various sizes with different vertical dimensions are manufactured, and fittings of a size suitable for the beam size (vertical dimension of the beam) are selected and used. For example, when using beams with three types of beam sizes, large, medium, and small, there are also three types of fittings, large, medium, and small, prepared accordingly, and these are selected and used according to the beam size.

[0004] Therefore, conventionally, it has been necessary to manufacture and prepare various sizes of fittings with different vertical dimensions, and it has been troublesome for constructors to obtain these and select and use them according to the beam size.

[0005] On the one hand, it is conceivable to construct by arranging small-sized joining fittings vertically in parallel according to the beam length. That is, if only such small-sized joining fittings are used and arranged vertically in parallel according to the beam length, it is not necessary to prepare joining fittings of various sizes, and there is no need for selective use, no installation error will occur, and the construction will be facilitated.

[0006] However, in this case, since the contact area between each joining fitting and the column becomes small (the smaller the contact area, the more), when a shear force is applied from the vertical direction, a force that tries to rotate each fitting around the fixture fixed to the column is generated. As a result, secondary stresses in the horizontal direction are generated in each drift pin, and the number of drift pins where these secondary stresses are generated increases. Therefore, the shear resistance tends to decrease compared to the case of using large-sized joining fittings prepared according to the beam length. Therefore, it is discouraged to divide and arrange the joining fittings in this way (use a plurality of small-sized joining fittings arranged vertically in parallel).

[0007] That is, when using small-sized joining fittings arranged vertically in parallel, the shear resistance is lower than when using large-sized joining fittings prepared according to the beam length. Therefore, in order to provide a shear resistance corresponding to the design stress, more small-sized joining fittings must be used, and the beam length corresponding to the number arranged vertically must be set. As a result, the cost will increase significantly.

[0008] Even with large-sized joining fittings prepared according to the beam length, the fitting itself rotates to some extent, and secondary stresses are generated in the connecting tool (drift pin) at the position farthest from the center of the height of the joining fitting. This means that the smaller the joining fitting, the greater the influence of the secondary stress (the smaller the joining fitting, the easier it is to rotate). This secondary stress occurs in the direction of the end of the beam applied to the joining fitting, and it induces tearing from the beam through-hole that penetrates the connecting tool. Therefore, it is one of the determining factors for the maximum load. Secondary stress is generated (with a significant impact) at two locations, the uppermost and lowermost positions, by the joining fittings prepared according to the beam formation. However, since each of the small-sized joining fittings arranged vertically rotates and secondary stress is generated in each one, it is likely to induce splitting from the beam through-hole, the maximum load does not increase, and thus the shear strength tends to be low. Also, since the joining fittings are of a size that easily rotates, deformation of the joint progresses easily, that is, the rigidity of the joint is low, which is also a factor in reducing the shear strength.

[0009] To prevent this, for example, simply arranging the joining fittings vertically side by side and connecting them to each other with bolts and nuts not only increases the cost but also significantly deteriorates the workability and lacks practicality.

Summary of the Invention

Problems to be Solved by the Invention

[0010] In view of such a situation, the present invention solves the above problems. Without preparing joining fittings of various sizes, by arranging the necessary number of joining fittings side by side according to the beam formation, the joining strength can be ensured, the workability is excellent, and even if a force that tries to rotate each joining fitting is generated by a shear force and secondary stress is about to occur, the locking of the locking portion cancels this out and the number of connecting tools that generate secondary stress can be suppressed, and the decrease in joint rigidity due to rotation suppression can be suppressed. Therefore, the decrease in shear strength can be suppressed, and moreover, it is extremely practical with an excellent epoch-making building joining fitting that can be realized with a simple configuration.

Means for Solving the Problems

[0011] The gist of the present invention will be described with reference to the accompanying drawings.

[0012] The present invention is a building joining fitting that is respectively connected to a column 1 or a horizontal member 2 and a horizontal member 2 whose ends are butted and joined to join both, A connecting projecting plate portion 7 is provided so as to project from a connecting substrate portion 4 fixed to the column 1 or the horizontal member 2 by a fixture 3, and is connected to the horizontal member 2 by a connector 6 disposed at a joint portion 5 of the horizontal member 2 where ends are butted and joined and inserted through the joint portion 5. In the connecting projecting plate portion 7 disposed at the joint portion 5 at the end of the horizontal member 2 and connected by the connector 6, one or a plurality of connecting holes 8 in the form of holes or notches through which the connector 6 penetrates are provided in the vertical direction. An upper locking portion 9 is provided at the upper part of the base side closer to the connecting substrate portion 4 of the connecting projecting plate portion 7 disposed at the joint portion 5 of the horizontal member 2. A lower locking portion 10 that locks to the upper locking portion 9 of another building fitting to be arranged side by side in the vertical direction is provided at the lower part of the base side closer to the connecting substrate portion of the connecting projecting plate portion 7, which is on the side opposite to the upper locking portion 9 in the vertical direction. When arranging the other building fittings side by side in the vertical direction, the side portion of the upper locking portion 9 and the side portion of the lower locking portion 10 of the other building fitting are arranged side by side in the projecting direction of the connecting projecting plate portion 7, and when the side portion of the upper locking portion 9 and the side portion of the lower locking portion 10 butt or deform against a force to rotate the building fittings arranged side by side in the vertical direction and the other building fittings in the vertical direction, they are configured to be in a butting and locking state and resist. It relates to a building fitting.

[0013] Also, the upper locking portion 9 and the lower locking portion 10 are Near integrally formed on the plate edge portion of the connecting substrate portion 4 of the connecting projecting plate portion 7. It relates to the building fitting according to claim 1.

[0014] Also, one of the upper locking portion 9 and the lower locking portion 10 is the connecting substrate portion 4 of the connecting projecting plate portion 7 NearOne is a locking convex portion integrally protruding from the edge of the plate, and the other is a locking concave portion integrally formed by recessing. With respect to the force attempting to rotate the building fitting and the other building fitting arranged side by side in the vertical direction in the vertical direction, the upper locking portion 9 or the lower locking portion 10 of the Engage Outer side of the convex portion and the lower locking portion 10 or the upper locking portion 9 of the Engage When the inner side of the concave portion abuts or deforms, it is configured to be in an abutting and locking state and resist, which relates to the building fitting according to claim 2.

[0015] Also, it is configured in a U shape in plan view, and a pair of the connecting protruding plate portions 7 are integrally formed in a state of facing each other on the left and right of the connecting substrate portion, which relates to the building fitting according to any one of claims 1 to 3.

[0016] Also, according to the vertical dimension of the horizontal member 2 connected by the connecting tool 6 inserted through the connection port portion 5 where the connecting protruding plate portion 7 is disposed in the connection port portion 5, it is set to a vertical dimension in which a plurality of them are arranged side by side in the vertical direction, which relates to the building fitting according to claim 1.

Effect of the Invention

[0017] Since the present invention is configured as described above, without preparing fittings of various sizes, by arranging the required number of fittings side by side according to the beam formation, the joining strength can be ensured, the workability is excellent, and even if a force to rotate each fitting is generated by the shear force and a secondary stress is about to occur, the locking of the locking portion can cancel this and suppress the number of connectors in which the secondary stress is generated, and moreover, the decrease in the joint rigidity due to rotation suppression can be suppressed, so that the decrease in the shear strength can be suppressed, and it is an extremely practical and innovative building fitting that can be realized with a simple configuration.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

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Figure 6

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Figure 8

Mode for Carrying Out the Invention

[0019] The optimal embodiment of the present invention will be briefly described based on the drawings showing the operation of the present invention.

[0020] When joining one column 1 or transverse member 2 (beam) and the other transverse member 2 (beam), a connecting substrate portion 4 is attached and fixed to this one column 1 or transverse member 2 by a fixture 3 (for example, a fastening bolt to be passed through), and a connecting projecting plate portion 7 is disposed at a joint portion 5 of the other transverse member 2 (beam) whose ends are butted and joined, and a connecting tool 6 (drift pin) is inserted to connect the connecting projecting plate portion 7 to this other transverse member 2 and join both of them.

[0021] That is, in the present invention, one or a plurality of connecting holes 8 in the form of holes or notches through which the connecting tool 6 passes are provided in the connecting projecting plate portion 7 of the connecting fitting that is disposed at the joint portion 5 at the end of the transverse member 2 and is connected by the connecting tool 6, and a beam through hole 13 communicating with the connecting hole 8 is provided at the joint portion 5 at the end of the transverse member 2.

[0022] Therefore, the connecting protruding plate portion 7 protruding from the connecting substrate portion 4 fixed to the connecting side surface of one of the columns 1 or the horizontal members 2 (beams) is configured to be connected to the joint portion 5 of the other horizontal member 2 by inserting a connector 6 (drift pin) through the beam through-hole 13 and into the connecting hole 8 in communication with this.

[0023] In such a main joining fitting, in the present invention, an upper locking portion 9 is provided at the upper part of the base side closer to the connecting substrate portion 4 of the connecting protruding plate portion 7, and a lower locking portion 10 that locks to the upper locking portion 9 of another main joining fitting arranged side by side vertically is provided at the lower part of the base side closer to the connecting substrate portion of the connecting protruding plate portion 7 on the side opposite to the upper locking portion 9 in the vertical direction.

[0024] Therefore, in the present invention, when a required number of the other main joining fittings are arranged side by side in the vertical direction according to the beam formation (the vertical width of the beams 2 with their ends butted together), the upper locking portion 9 of the other main joining fitting and the lower locking portion 10 of the main joining fitting are arranged side by side in the protruding direction of the connecting protruding plate portion 7 and locked, that is, at least a side edge portion that is a part of the upper locking portion 9 (for example, when it is a locking convex portion, the outer side edge portion at the tip side of the connecting protruding plate portion 7) and a side edge portion that is a part of the lower locking portion 10 (for example, when it is a locking concave portion, the inner side edge portion at the tip side of the connecting protruding plate portion 7) are configured to be attached so as to be in a butting locking state when they butt or deform.

[0025] Therefore, even when a shear force from above downward is applied to the other horizontal member 2 (the beam 2 with its ends butted together), since the vertical dimensions of each main joining fitting are relatively small, a force to rotate downward starting from the fixture 3 is generated in each joining fitting, and even if a secondary stress is about to be generated in the length direction (horizontal direction) of the beam 2, the upper locking portion 9 and the lower locking portion 10 receive this (resist this force to rotate), so the secondary stress that would occur in the connector 6 (for example, a drift pin) is suppressed, and a decrease in the joint rigidity can be suppressed, resulting in a joint with no decrease in shear strength.

[0026] That is, without preparing a plurality of types of joining fittings with different vertical dimensions according to the beam structure, by arranging and installing the required number of these joining fittings with relatively small vertical dimensions above and below the column 1 according to the beam structure, the joining strength can be ensured and the workability can also be improved.

[0027] Moreover, in the present invention, since the vertical dimensions of each of these joining fittings are relatively small, a force that tries to rotate is likely to occur, but it can be resisted. Therefore, the secondary stress generated in the drift pin 6 can be suppressed, and the number of drift pins 6 in which this secondary stress occurs can be reduced. Thus, the shear strength is also less likely to decrease, and since this can be realized with a simple configuration, it becomes a joining fitting with extremely excellent practicality.

Example

[0028] A specific example of the present invention will be described with reference to the drawings.

[0029] In this example, the present invention is applied to a building joining fitting (beam receiving joining fitting) that joins the column 1 and the horizontal member 2 (beam) whose ends are butted and joined in an orthogonal state. A connecting substrate portion 4 fixed to the connecting side surface of the column 1 by a fixing tool 3 (a means of passing a fastening bolt passed through the column fixing hole 15 from the outside of the column 1 through the column mounting through hole 14 and tightening with a nut), and inserted into the joint portion 5 (vertical through slit) of the horizontal member 2 (beam) whose ends are butted and joined in an orthogonal state. A pair of connecting projecting plate portions 7 for connecting to the horizontal member 2 by driving and connecting a plurality of connecting tools 6 (drift pins) from the lateral direction are provided opposite to each other to form a U-shaped or C-shaped building joining fitting (this joining fitting) made of a metal plate in a plan view.

[0030] That is, in this example, a plurality of connecting holes 8 having a hole shape through which the connecting tool 6 (drift pin) penetrates and a notch shape at the end are provided in the vertical direction on each of the pair of connecting projecting plate portions 7 of this joining fitting that is inserted into the joint portion 5 (vertical through slit) at the end of the horizontal member 2 and connected by the connecting tool 6 (drift pin).

[0031] Further, all or a selected portion of the plurality of connecting holes 8 provided in each of the pair of projecting connecting plate portions 7 projecting from the connecting substrate portion 4 are used, and a plurality of upper and lower connecting tools 6 (drift pins) are inserted through the beam through holes 13 of the connecting port portion 5 communicating therewith from the lateral direction orthogonal to the longitudinal direction of the cross member 2 to connect to the cross member 2.

[0032] Also, the bonding fitting of this embodiment is configured in a U shape or a C shape in plan view as described above, and a pair of the projecting connecting plate portions 7 are integrally formed in a state facing the connecting substrate portion 4, and are set to a vertical dimension (relatively small size) in which a plurality (required number) are arranged in parallel in the vertical direction according to the vertical dimension (beam formation) of the cross member 2.

[0033] That is, without preparing, for example, three types of bonding fittings of large, medium, and small sizes according to the beam formation, a configuration is adopted in which a required number of small-sized bonding fittings are attached and fixed in a parallel arrangement in the vertical direction of the column 1. This makes the construction easy, and the bonding strength can be maintained even for the fittings divided in this way.

[0034] Therefore, since the area of the bonding fitting in contact with the column 1 is relatively small, when a shearing force is applied to each bonding fitting from the vertical direction, a force that tries to rotate significantly may be generated starting from the fixture 3, and as a result, the large horizontal secondary stress described above is generated in the upper and lower drift pins 6 particularly on the tip side. To counteract this and suppress this secondary stress, in this embodiment, locking portions 9 and 10 are provided at the upper and lower ends on the base side of the projecting connecting plate portion 7, and when the bonding fittings are arranged in parallel vertically, they can be arranged in a locked state (engaged state) by these locking portions, and a structure is adopted that can counteract and lock the force that tries to rotate.

[0035] Specifically, in this embodiment, an upper locking portion 9 is provided at the upper part of the base side of the connecting projecting plate portion 7 closer to the connecting base plate portion 4, and a lower locking portion 10 that locks to the upper locking portion 9 of another main joining fitting arranged side by side vertically is provided at the lower part of the base side of the connecting projecting plate portion 7 on the side opposite to the upper locking portion 9 and closer to the connecting base plate portion 4.

[0036] That is, when arranging other main joining fittings side by side in the vertical direction, the side portion of the upper locking portion 9 of the other main joining fitting and the side portion of the lower locking portion 10 of the main joining fitting are arranged side by side in the projecting direction of the connecting projecting plate portion 7, and the side portion (for example, the outer surface on the tip side of the connecting projecting plate portion 7 when it is a locking convex portion) that is a part of the upper locking portion 9 and the side portion (for example, the inner surface on the tip side of the connecting projecting plate portion 7 when it is a locking concave portion) that is a part of the lower locking portion 10 abut against each other and are configured to be in an abutting and locking state when deformed.

[0037] More specifically, the upper locking portion 9 and the lower locking portion 10 are integrally formed at the plate edge portion of the connecting projecting plate portion 7 closer to the connecting base plate portion 4. Further, the upper locking portion 9 of this embodiment is integrally formed to project upward from the upper edge portion as a plate-shaped locking convex portion, and the lower locking portion 10 is integrally formed to be recessed at the lower edge portion as a locking concave portion.

[0038] That is, in this embodiment, a plate-shaped locking convex portion is integrally formed to project upward from the upper edge portion near the base end portion of each connecting projecting plate portion 7 closer to the connecting base plate portion 4 as the upper locking portion 9, and a notch-shaped locking concave portion is integrally formed to be recessed at the lower edge portion near the base end portion opposite to this as the lower locking portion 10. By arranging the locking convex portion and the locking concave portion in an engaging manner, the side portions (the outer surface on the tip side of the connecting projecting plate portion 7 of the locking convex portion and the inner surface on the tip side of the connecting projecting plate portion 7 of the locking concave portion) of the abutting portions in the beam length direction of the locking convex portion and the locking concave portion are in a locking state.

[0039] Therefore, when a force acts to cause the main joint fitting to rotate downward due to a shearing force and it is about to deform, the locking convex portion is received by the locking concave portion, and due to the configuration that it becomes a butting and locking state so as to counteract this force that is about to deform, the secondary stress generated in each drift pin 6 is suppressed, and by suppressing the decrease in joint rigidity due to the rotation of the joint fitting, the shear strength is retained.

[0040] Therefore, when a shearing force from above downward is applied to the beam 2, even if a force to rotate downward is generated in each main joint fitting and a secondary stress is about to be generated in the longitudinal direction of the beam 2, it is received by the locking of the upper locking portion 9 and the lower locking portion 10, and it will counteract the force that is about to rotate. Therefore, the secondary stress generated in the drift pin 6 is suppressed, and the number of drift pins 6 in which secondary stress is generated does not increase, and the shear strength does not decrease, resulting in a joint configuration.

[0041] That is, even if it is not necessary to prepare a plurality of types of joint fittings with different vertical dimensions according to the beam formation, by arranging and installing the required number of main joint fittings with relatively small vertical dimensions on the column 1 according to the beam formation, the construction becomes easy and the joint strength can be ensured.

[0042] Moreover, as described above, since the vertical dimensions of each main joint fitting are relatively small, a relatively large force to rotate is likely to be generated, but it can be counteracted. Therefore, the secondary stress generated in the drift pin 6 can be suppressed, and the decrease in joint rigidity due to rotation can be suppressed. Therefore, the shear strength is also less likely to decrease, and since this can be realized with a simple configuration, it becomes a joint fitting with extremely excellent practicality.

[0043] Also, in this embodiment, since the locking structure by the upper locking portion 9 and the lower locking portion 10 is formed as an engaging structure of a locking convex portion integrally protruding and a locking concave portion integrally recessed in a notch shape, it is easy to manufacture, does not result in high cost, has excellent mass productivity, and only needs to be arranged side by side so as to engage (engage), resulting in a configuration with extremely excellent practicality such as excellent workability.

[0044] In addition, since this locking structure (the upper locking portion 9 and the lower locking portion 10) is provided closer to the connecting substrate portion 4, it becomes a locking structure at a position with small deformation and displacement. Therefore, this locked state is easily maintained (even if this lock deforms, it is difficult to come off), resulting in a more excellent configuration.

[0045] In addition, in this embodiment, a positioning convex portion 12 that engages with the positioning concave portion 11 of the column 1 is provided on the connecting substrate portion 4, so that the present bonding fittings can be easily arranged in a positioned state side by side, and the configuration is more excellent in workability. Further, since the column 1 is joined by the positioning convex portion 12 and the fixture 3, even if there is one fixture 3 fixed, it has an anti-rotation effect, and thus when placed on the beam 2, the beam 2 does not tip over, fulfilling the function of preventing the operator from falling.

[0046] Also, a configuration is adopted in which the fixing bolts of the fixture 3 are passed through by selectively using a plurality of column mounting through holes 14 provided below the positioning convex portion 12. For example, when joining two beams 2 to different two side surfaces of the column 1, the present bonding fittings are attached to these two side surfaces with the fixture 3. At this time, the positioning convex portion 12 is engaged with the positioning concave portion 11 and attached in a state of being positioned at a predetermined position of the column 1, and at the same time, by selecting any one of the column mounting through holes 14 of the connecting substrate portion 4 and passing the fixing bolt through it to fix it to the column 1, it can be easily attached so that the fixing bolts do not intersect and interfere with each other, resulting in a configuration that is more excellent in workability.

[0047] In addition, if the structures of the upper locking portion 9 and the lower locking portion 10 can be locked and connected in advance, in a state of being integrally connected in a plurality, as described above, it can be attached and fixed to the column 1 with the fixture 3, and the workability is further improved. Thus, the configuration (locking structure) of the locking portion can be designed as appropriate.

[0048] Note that the present invention is not limited to this embodiment, and the specific configurations of the other constituent elements of the locking structure can be designed as appropriate.

Explanation of Reference Numerals

[0049] 1 Column 2 Horizontal frame member 3 Fixture 4 Connecting substrate part 5 Joint part 6 Connector 7 Connecting protruding plate part 8 Connecting hole 9 Upper locking part 10 Lower locking part 11 Positioning recess 12 Positioning protrusion 13 Beam through-hole 14 Column mounting through-hole 15 Column through-hole

Claims

1. A building fitting for joining a column or a horizontal member and a horizontal member whose ends are butt - joined by connecting them to each of the column or the horizontal member, a connecting projecting plate portion is provided on a connecting substrate portion fixed to the column or the horizontal member by a fixture and is connected to the horizontal member by a connecting tool disposed in a mating portion of the horizontal member whose ends are butt - joined and inserted through this mating portion, in the connecting projecting plate portion disposed in the mating portion at the end of this horizontal member and connected by the connecting tool, one or a plurality of connecting holes in the form of holes or notches through which the connecting tool penetrates are provided in the vertical direction, an upper locking portion is provided on the upper part of the base side closer to the connecting substrate portion of the connecting projecting plate portion disposed in the mating portion of the horizontal member, a lower locking portion that locks to the upper locking portion of another building fitting arranged side - by - side vertically is provided on the lower part of the base side closer to the connecting substrate portion of the connecting projecting plate portion on the side opposite to the upper locking portion in the vertical direction, when arranging the other building fittings side - by - side in the vertical direction, the side portion of the upper locking portion and the side portion of the lower locking portion of the other building fitting are arranged side - by - side in the projecting direction of the connecting projecting plate portion, and when a force is applied to rotate the building fittings arranged side - by - side in the vertical direction and the other building fittings in the vertical direction, the side portion of the upper locking portion and the side portion of the lower locking portion are in a butting and locking state and resist, which is characterized by a building fitting.

2. The building fitting according to claim 1, wherein the upper locking portion and the lower locking portion are integrally formed on a plate edge portion closer to the connecting substrate portion of the connecting projecting plate portion.

3. One of the upper locking portion and the lower locking portion is a locking convex portion integrally protruding from a plate edge portion closer to the connecting substrate portion of the connecting projecting plate portion, and the other is a locking concave portion integrally recessed. When a force is applied to rotate the building fittings arranged side - by - side in the vertical direction and the other building fittings in the vertical direction, when the outer side portion of the locking convex portion, which is the upper locking portion or the lower locking portion, and the inner side portion of the locking concave portion, which is the lower locking portion or the upper locking portion, butt or deform, they are in a butting and locking state and resist, which is characterized by the building fitting according to claim 2.

4. The architectural joint fitting according to any one of claims 1 to 3, characterized in that it is configured in a U shape in plan view, and a pair of the projecting connecting plate portions are integrally formed so as to face each other on the left and right of the connecting substrate portion.

5. The architectural joint fitting according to claim 1, characterized in that a plurality of the projecting connecting plate portions are arranged in parallel in the vertical direction according to the vertical dimension of the horizontal member to be connected, which is arranged in the joint portion and connected by the connecting member inserted through this joint portion.

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