JP5759927B2 - Bonded hardware - Google Patents

Description

  The present invention relates to a metal joint used when joining end faces of horizontal members such as beams and girders to side surfaces of structural members such as columns and trunks in various tree structures.

  For example, as a conventional joint hardware used when joining the end face of a horizontal member such as a beam or a girder to the side surface of a structural material such as a column or torso, the front side contacts the side surface of the structural material, and the bolt hole has a bolt And a pair of side plates that are inserted into a slit machined in the end face of the horizontal member and are fixed to the horizontal member through drift pins in the pin holes, respectively. For example, refer to Patent Document 1), or by providing a ring-shaped locking portion on the front side of the back plate, and transmitting the load acting on the horizontal member to the structural material via the locking portion of the joint hardware. There have been proposed joint metal fittings that reduce the burden of bolts (for example, see Patent Document 2).

JP 2001-336216 A JP 2001-207537 A

  However, in the joint hardware of Patent Documents 1 and 2 described above, a slit is formed in advance so that the side plate is inserted into the end surface of the horizontal member, and the side plate of the joint fitting fixed to the structural material with a bolt is used as the slit. After that, the drift plate is inserted from the pin hole provided in the side plate, and the structural material and the horizontal member are joined via the joint bracket. When it is not bent at a right angle, there is a problem that the side plate cannot be inserted into the slit.

  Before tightening with bolts and nuts, the side plate is bent almost at right angles to the back plate. However, if the back plate is brought into contact with the structural material and tightened with bolts and nuts too much, the back plate bends. The side plate will bend inward. For this reason, when the side plate is bent inward with respect to the back plate, there is a problem that the inherent strength of the joint fitting cannot be exhibited.

  In addition, after joining the structural material and the horizontal member using the joining bracket, when the horizontal member is pulled in the direction away from the structural material, the side plate fixed to the horizontal member by the drift pin is also pulled, There has been a problem that the back plate is curved and the cross-sectional shape of the joint fitting is deformed into a U-shape.

  Therefore, the present invention can be manufactured by bending the side plate accurately at a right angle with respect to the back plate, and when it is over-tightened with bolts and nuts, the side plate does not bend inward with respect to the back plate, and the horizontal member is a structural material. An object of the present invention is to provide a metal joint that can prevent the back plate from being bent even when it is pulled away from the head.

In order to solve the above-described problems, a metal fitting according to the present invention is a metal fitting for bonding an end surface of a horizontal member such as a beam or a girder to a side surface of a structural material such as a column or a trunk, The front side is in contact with the side surface, inserted into the back plate fixed to the structural material through the bolt hole through the bolt, and the slit processed on the end surface of the horizontal member, and fixed to the horizontal member through the drift pins respectively to the pin holes and a pair of side plates which are, in the upper and lower ends of the back plate, respectively, in the rear surface of the same width of the back plate, and the back plate side tongue portion to the backplate Ru extending inwardly in the vertical direction Both side ends of the back plate side tongue piece abut against the inner side surface of the pair of side plates, and the outer surface of the back plate side tongue piece is configured to be flush with the upper and lower end surfaces of the side plate . Here, the back plate side tongue pieces are the upper and lower ends of the back plate in the flat state before the side plate is bent with respect to the back plate. It is preferable that the portion protruding from the upper and lower end portions of the side plate and the portion protruding from the side plate at the upper and lower end portions of the back plate be bent 90 degrees or more inward.
Further, each of the pair of side plates has a side plate side tongue piece cut for forming a side plate side tongue piece portion in the vicinity of the boundary portion with the back plate, and a portion surrounded by the side plate side tongue piece cut. the provided shroud side tongue portion by bending toward the center between the pair of side plates, the back plate side end of the side plate side tongue portion is brought into contact with the back surface of the back plate, between the back plate and the side plate It is good to comprise so that the angle of becomes substantially right angle.

In the joint metal fitting of the present invention, the upper and lower ends of the back plate have the same width as the back surface of the back plate and extend inward in the vertical direction with respect to the back plate, and both side ends thereof are a pair of side plates. Since the back plate side tongue piece that contacts the inner surface is provided, it can be manufactured by bending the side plate accurately at right angles to the back plate, and the side plate does not bend inward with respect to the back plate when tightened with bolts and nuts too much. Furthermore, even when the horizontal member is pulled away from the structural member, the back plate can be prevented from bending.
In particular, since the outer surface of the back plate side tongue piece portion is configured to be flush with the upper and lower end surfaces of the side plate, shearing or the like is applied to the horizontal member joined to the structural material by the joint fitting according to the present invention. When the external force is applied, it is possible to prevent damage to the structural material by minimizing the indentation into the structural material by the lower end portion of the joint metal, and to prevent the structural member from being attached to the side plate of the joint metal fitting according to the present invention. The slit processed in the end surface of the horizontal member can be easily dropped and work efficiency can be improved .

It is a front view which shows the use condition of a joining metal fitting. It is a principal part cross-sectional front view in the use condition of a joining metal fitting. It is a principal part top view in the use condition of a joining metal fitting. (A)-(c) is the top view (top view), AA sectional view, and right view of the joining metal fitting of an embodiment, respectively. It is a perspective view of the joint metal fitting of an embodiment. It is an expanded view which shows the state of the flat plate before bending the metal joint of embodiment. (A), (b), respectively, Ru plan view der when bonding hardware attached to the structural material of the prior art embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a metal joint according to the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiment described below is merely an example of the present invention including its dimensions and the like, and the present invention is not limited to the following embodiment, and can be appropriately changed within the scope of the technical idea of the present invention. is there.

  As shown in FIGS. 1 to 3, the metal fitting 1 is for joining the end surface of a horizontal member 3 such as a beam or a girder to the side surface of a structural material 2 such as a column or a trunk. As shown in FIG. 1, a single metal plate is cut and bent to provide a back plate 11 and left and right side plates 12 and 12. Here, the length in the longitudinal direction which is the height of the back plate 11 and the side plates 12 and 12 is about 205 mm, the length in the short side which is the width of the side plates 12 and 12 is about 58 mm, The width, that is, the distance between the side plates 12, 12 is about 40 mm.

  The side plates 12 and 12 are provided on both sides of the back plate 11 as shown in FIGS. 4 (a) to 4 (c). As shown in FIG. 3, the side plates 12 and 12 are processed on the end surfaces of the horizontal member 3 such as beams and girders. For example, as shown in FIG. 2, it is fixed to the horizontal member 3 through the drift pins 5 in the two pin holes 12a1 and 12a2, as shown in FIG. In addition, a pin receiving groove 12b is formed above the uppermost pin hole 12a1 at a position spaced apart by the same distance. The pin receiving groove 12b is configured to receive the drift pin 5 fixed in advance on the upper part of the horizontal member 3. This is because, before connecting the structural member 2 and the horizontal member 3 via the joint hardware 1, the drift pin 5 is inserted and fixed to the upper portion of the horizontal member 3 in advance. When connecting the frame 3 with the metal fitting 1, the drift pin 5 is positioned and positioned in the pin receiving groove 12 b, and then the drift pin 5 is inserted into the pin hole 12 a provided in the side plates 12 and 12. To pass through.

  The back plate 11 is a portion that contacts the side surface of the structural material 2 such as a pillar. As shown in FIG. 4C, the back plate 11 is fixed to the structural material 2 through bolts 4 (here, for convenience, six Bolt hole 11a is provided. Here, the number and interval of the bolt holes 11a are arbitrary. And in this embodiment, as shown in FIG. 2 etc., the connection with the structural material 2 is fastened with three bolts 4 using, for example, three six bolt holes 11a every other one. . In addition, the volt | bolt 4 is comprised from the axial part 4a by which the screw thread was formed in the front-end | tip as shown in FIG. 2, and the head 4b. On the front side of the structural member 2 such as a pillar, a countersunk part 21 is formed by shaving the periphery of the bolt hole 11a so that the head 4b of the bolt 4 does not protrude.

  In the present embodiment, as shown in FIGS. 4A to 4C and FIG. 5, the upper and lower ends of the back plate 11 extend inward in the vertical direction with respect to the back plate 11, and Back plate side tongue portions 11b and 11b are provided in which the back plate side end portions 11b1 and 11b1 are in contact with the inner surfaces of the pair of side plates 12 and 12, respectively.

  Here, the width of the back plate side tongue portions 11b, 11b is made substantially the same as the width of the back plate side of the back plate 11. Further, as shown in FIG. 6, the back plate side tongue pieces 11b and 11b are arranged from the upper and lower ends of the back plate 11 to the side plate in a flat state before the side plates 12 and 12 on both sides are bent with respect to the back plate 11. The upper and lower end portions of the back plate 11 protrude from the upper and lower end portions of the back plate 11, and the portions protruding from the side plates 12 and 12 at the upper and lower end portions of the back plate 11 are bent inward by 90 degrees or more. Here, the bending angle of the back plate side tongue pieces 11b and 11b with respect to the back plate 11 is approximately 90 degrees, and even when bent back to 90 degrees, the outer surface of the back plate side tongue pieces 11b and 11b and In order for the upper and lower end surfaces of the side plates 12 and 12 to be flush with each other, the base portion of the back plate side tongue pieces 11b and 11b, that is, between the upper and lower end portions of the back plate 11 and the upper and lower end portions of the side plates 12 and 12, Some notches about the thickness of the back plate side tongue pieces 11b and 11b are provided. However, in the present invention, this notch is optional and may be omitted. However, if the base portions of the plate side tongue portions 11b and 11b are not cut, the upper and lower ends of the back plate 11 are bent from the side plates 12 and 12 so that the plate side tongue portions 11b and 11b are bent. When it is provided, if it is not bent by 90 degrees or more, the back plate side end portions 12b1 and 11b1 of the back plate side tongue pieces 11b and 11b do not come into contact with the back surface of the back plate 11, so that it is bent by 90 degrees or more.

  Then, the back plate side tongue piece portions 11 b and 11 b are formed by bending the protruding upper and lower end portions of the back plate 11, and then the side plates 12 and 12 on both sides of the back plate 11 are bent. Then, the inner side surfaces of the side plates 12 and 12 come into contact with both side end portions 11b1 and 11b1 of the back plate side tongue portions 11b and 11b, and the width of the back plate side tongue piece portions 11b and 11b is set on the back side of the back plate 11. Since the width is almost the same, the side plates 12 and 12 on both sides can be reliably bent at substantially right angles (90 degrees) with respect to the back plate 11.

  Therefore, for example, as shown in FIG. 7 (a), the back plate side tongue piece portion 11b is a conventional joint metal fitting in which the back plate side tongue piece portions 11b and 11b are not provided at both upper and lower ends of the back plate 11. 11b is not provided, the side plates 12 and 12 may not be bent at a right angle to the back plate 11. In such a case, the side plates 12 and 12 are end faces of the horizontal member 3. There is a possibility that it cannot be inserted into the slits 31, 31 formed in.

  On the other hand, in the joining metal fitting 1 of the present embodiment, the back plate side tongue pieces 11b and 11b are provided at the upper and lower ends of the back plate 11, and the width of the back plate side tongue pieces 11b and 11b is the back. Since the width on the back side of the plate 11 is substantially the same, the side plates 12 and 12 on both sides can be reliably bent substantially at right angles (90 degrees) with respect to the back plate 11, and as a result, as shown in FIG. Thus, it can insert reliably in the slits 31 and 31 formed in the end surface of the horizontal member 3.

  Moreover, in the joining metal fitting 1 of this embodiment, when the back plate 11 is brought into contact with the structural material 2 and tightened with the bolt 4 and the nut 5 too much, the back plate 11 is bent and the side plates 12 and 12 are bent inward. The back plate side tongue pieces 11 b and 11 b are in contact with the inner side surfaces of the side plates 12 and 12 at the upper and lower ends of the back plate 11, so that the side plates 12 and 12 are bent inward with respect to the back plate 11. To prevent that. As a result, the joining metal fitting 1 can exhibit the original proof stress.

  Moreover, in the joining metal fitting 1 of this embodiment, after joining the structural material 2 and the horizontal member 3 using the joining metal fitting 1, when the horizontal material 3 is pulled in a direction away from the structural material 1, Even if the side plates 12 and 12 fixed to the material 3 by the drift pins 6 are also pulled and the back plate 11 is bent, the back plate side tongue pieces 11b and 11b are formed at the upper and lower ends of the back plate 11 at the side plate 12 and Since it is in contact with the inner surface of 12, the cross-sectional shape of the joint fitting 1 can be prevented from being deformed into a U shape.

  Further, in the joining metal fitting 1 of the present embodiment, the pair of side plates 12 and 12 are provided with side plate side tongue pieces 12c and 12c in the vicinity of the boundary portion with the back plate 11 as shown in FIG. The side plate side tongue piece cuts 12c2 and 12c2 are inserted, and as shown in FIGS. 4 and 5, the portion surrounded by the side plate side tongue piece cuts 12c2 and 12c2 is placed in the center direction between the pair of side plates 12 and 12. The side plate side tongue pieces 12c and 12c are provided by bending, and the side plate side end pieces 12c1 and 12c1 of the side plate side tongue pieces 12c and 12c come into contact with the back surface of the back plate 11, so that the back plate 11 and the side plates 12 and 12 are provided. It is comprised so that the angle between may become a substantially right angle.

  For this reason, the joining metal fitting 1 of the present embodiment can reliably bend the side plates 12 and 12 on both sides with respect to the back plate 11 at substantially right angles (90 degrees) even near the center of the side plates 12 and 12. The slits 31 and 31 formed on the end surfaces of the side plates can be surely inserted, and even when the back plate 11 is brought into contact with the structural material 2 and tightened with the bolts 4 and nuts 5, the side plate side is closer to the center of the side plates 12 and 12. Since the side plate side end portions 12c1 and 12c1 of the tongue pieces 12c and 12c are in contact with the back surface of the back plate 11, the side plates 12 and 12 can be prevented from bending inward with respect to the back plate 11, and the joining metal fitting 1 is provided. The original strength can be demonstrated. However, in the present invention, it is not essential to provide the side plate side tongue piece portions 12c and 12c by inserting the side plate side tongue piece cuts 12c2 and 12c2 into the pair of side plates 12 and 12, and they can be omitted. Further, in the present invention, if the side plates 12 and 12 are bent by 90 degrees or more with respect to the back plate 11 at the time of manufacture from a flat plate, or if the side plates 12 and 12 are excessively bent with respect to the back plate 11 at the time of construction. The side plate side tongue pieces 12c2, 12c2 are inserted into the pair of side plates 12, 12 to provide the side plate side tongue pieces 12c, 12c, and the back plate side tongue pieces 11b, Providing 11b may be omitted.

  Moreover, in the metal joint 1 of the present embodiment, the upper and lower ends of the back plate 11 are bent to provide the back plate side tongue pieces 11b and 11b, while the portions surrounded by the side plate side tongue cuts 12c2 and 12c2 are paired. The side plate side tongue pieces 12c and 12c are provided by bending in the center direction between the side plates 12 and 12, but the present invention is not limited to this, and the back plate side tongue pieces 11b and 11b and the side plate side tongue pieces are provided. It is also possible to provide the portions 12c and 12c by welding or the like on the upper and lower ends of the back plate 11 or between the side plates 12 and 12.

DESCRIPTION OF SYMBOLS 1 Joining metal fitting 11 Back plate 11a Bolt hole 11b Back plate side tongue piece part 11b1 Back plate side edge part 11b2 Back plate side tongue piece cutting 12 Side plate 12a1, 12a2 Pin hole 12b Pin receiving groove 12c Side plate side tongue piece part 12c1 Side plate side end Part 12c2 Side plate side tongue cut 2 Structure material 21 Countersink part 3 Horizontal member 31 Slit 4 Bolt 4a Shaft part 4b Head part 5 Nut 6 Drift pin

Claims (3)

A joining hardware for joining the end face of a horizontal member such as a beam or a girder to the side of a structural member such as a column or torso,
A back plate that comes into contact with the side surface of the structural material and is fixed to the structural material through a bolt through a bolt hole;
A pair of side plates that are inserted into slits machined on the end face of the horizontal member and fixed to the horizontal member through the drift pins in the plurality of pin holes,
The upper and lower ends of the back plate, respectively, in the rear surface of the same width of the back plate, and is provided with a back plate side tongue portion Ru extending inwardly perpendicularly to the back plate,
Both side end portions of the back plate side tongue piece portion are in contact with the inner side surfaces of the pair of side plates, and the outer surface of the back plate side tongue piece portion is configured to be flush with the upper and lower end surfaces of the side plate. Joined hardware. The joint hardware according to claim 1,
The back plate side tongue piece protrudes from the upper and lower ends of the back plate from the upper and lower ends of the side plate in the flat state before the side plate is bent with respect to the back plate, and more than the side plate at the upper and lower ends of the back plate. A metal fitting characterized in that the protruding portion is bent 90 degrees or more inward. In the metal joint according to claim 1 or 2 ,
In the pair of side plates, a side plate side tongue piece cut for forming a side plate side tongue piece portion is formed in the vicinity of the boundary portion with the back plate, and a portion surrounded by the side plate side tongue piece cut portion is a pair of side plates. provided shroud side tongue portion by bending toward the center between the back plate side end of the side plate side tongue portion is brought into contact with the back surface of the back plate, substantially the angle between the back plate and the side plate Bonding hardware characterized by having a right angle.

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