JP4202242B2 - Metal fittings for wooden building components - Google Patents

Description

  The present invention relates to a metal fitting for connecting horizontal members (beams, girders, foundations, etc.) to main members (columns, horizontal members such as beams, girders, trunks, etc.) in wooden buildings.

As a connecting member of a wooden building member, one formed by a support plate and two joining plates in a U-shape in plan view is known (see, for example, Patent Document 1). The support plate is in contact with the side surface of the main member and fixed with bolts, and the joining plate is inserted into a slit formed at the end of the horizontal member, and a drift pin is driven in from the side and fixed.
JP-A-10-33260 (first page, FIG. 1)

  Since it is cumbersome to attach the connecting fittings one by one to the main member at the construction site, they are attached in advance to a pillar or the like in a wood precut factory. If it does so, when transporting a pillar etc. from a factory to a construction site, since the joining board of metal fittings jumped out from a pillar etc., there was a problem that a load volume increased and transportation cost increased. In addition, when the height of the beam to be joined is increased, the height of the joining plate of the metal fitting must be increased. However, since the metal fitting is formed by bending a single iron plate, the support plate and the joining plate are integrated. Therefore, many kinds of metal fittings had to be manufactured according to the size of the beam, which was expensive.

Furthermore, the connecting metal fitting has the following inconvenience because the supporting plate fixed to the main member and the joining plate attached to the horizontal member are integrated.
As described above, the connecting bracket cannot be installed across the trunk member that separates the connecting bracket in the vertical direction because it is attached to the trunk member in advance at the factory. For example, when the end face of a beam that is tall from the side is abutted and joined to the place where the pillar and the torso are connected vertically, the connecting bracket can be installed across the pillar and torso. In addition, since it is not preferable to install the two connecting brackets separately on the pillar and torso from the viewpoint of the connection strength of the beam, it is recommended that the torso length of the torso be the same as that of the beam. I use it. However, since the torso is received by a pillar in the middle, there is no problem in strength even if wood whose height is lower than the beam is used. In other words, with conventional brackets, the end of a horizontal member with a high height cannot be connected to the side surface of a horizontal member with a low height, so the horizontal height of the horizontal members to be joined together is common to the higher height In order to make the metal fittings easier to use, some economics were sacrificed.

  In addition, in recent CAD / CAM systems for wooden buildings, information on connecting fittings has been input, and when an assembly drawing of the frame is drawn, which connecting fitting is used for each member and what attachment is used for each member. It is recognized whether or not it is necessary to perform the drilling of each of the holes, and the holes are automatically drilled in each member. However, depending on the individual wooden building, the thickness of the tatami on the floor may be different, or the floor may be a floor, so you may want to change the height at which the beam is attached to the pillar. Therefore, it is not easy to prepare software so that the hole position automatically changes according to the situation, and it is complicated to perform the hole processing manually.

  The present invention has been made in view of the above-described circumstances, and can reduce the bulk when transporting a member to which a connection fitting is attached from the factory to the site, and in addition, the workability and economics of the wooden frame It aims at providing the metal fittings of the wooden building member which contributes also to the improvement of.

  In order to achieve the above object, a connecting member for a wooden building member according to the first aspect of the present invention is a base metal member fixed to the main member and a connection inserted and fixed to a slit formed at the end of the horizontal member. The base metal fitting has a fixing portion to the main member and a connecting portion of the connecting plate, and the connecting portion has a locking hole opening forward at the tip thereof, The hole has a vertical dimension on the inlet side smaller than that on the back side, and the connection plate has a claw piece that locks in the locking hole of the connecting portion on the base side, and the claw piece is inserted into the locking hole. The claw piece can be inserted into and removed from the locking hole at the upper position, and the claw piece is locked into the locking hole at the lower position to prevent it from coming off. And the vertical movement of the connecting plate is prevented.

  A connecting member for a wooden building member according to the invention of claim 2 comprises a base member fixed to the main member, a connecting plate inserted into and fixed to a slit formed at the end of the horizontal member, and a connecting holder. The base bracket has a fixing part to the main trunk member and a connecting part of the connecting plate, and the connecting part has a notch opening forward at the tip part, and the notch has a vertical dimension on the inlet side on the back side. The connecting plate has a claw piece that fits into the notch of the connecting portion on the base side with almost no gap, and the connecting holder is the base of the connecting plate that is fitted to the connecting portion of the base metal fitting. The side is clamped from both sides to prevent the connection plate from falling off.

  The invention according to claim 3 is characterized in that a plurality of the locking holes or notches are arranged in the vertical direction on the base metal fitting connecting portion, and a plurality of claw pieces are provided on the connecting plate.

  The invention according to claim 4 is characterized in that the locking hole or the notch of the base metal fitting connecting portion has a laterally convex shape.

  Since the connecting metal fitting according to the first aspect of the invention is divided into the base metal fitting fixed to the main trunk member and the connection plate fixed to the horizontal member, only the base metal fitting is previously attached to the main main member at the factory. By attaching the connecting plate to the base metal fitting after being brought into the site, the bulk of the main member when transported to the site can be reduced, and the transportation cost can be reduced. The connecting plate can be easily attached to the base bracket by inserting a claw piece provided on the base side into the locking hole of the base bracket connecting portion from the front, and lowering the connecting plate downward. The connection plate can be fixed by inserting. Furthermore, the connection metal fitting of the present invention can be easily configured with a plurality of types of connection metal fittings by combining a predetermined base metal fitting with a plurality of connection plates having different shapes and sizes. In addition, the connection plate can be mounted across multiple base brackets attached to different main trunk members, which makes it possible to connect the horizontal members connected to each other as in the case of using a conventional integrated coupling bracket. It is not necessary to share the same, and contributes to the economic improvement of the wooden frame.

  The connection fitting according to the second aspect of the present invention can obtain the same effects as described above except that the connection plate is attached in a different manner. The connection plate can be easily attached by fitting the claw pieces of the connection plate into the cutouts of the base bracket connecting portion from the side and sandwiching the base side of the connection plate from both sides by the connection holder. .

  According to the third aspect of the present invention, the connecting plate can be attached to the base metal fitting with the height being changed in stages, thereby making the hole processing in the main trunk member and the horizontal member constant and the height of the horizontal member fixed. The convenience can be improved.

  According to the fourth aspect of the present invention, the strength of the connecting plate against pulling out the claw pieces can be increased, and the locking holes or notches are vertically symmetrical, so that the base metal fitting can be used upside down. It will be possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-5 has shown 1st embodiment of the coupling metal fitting which concerns on this invention. As shown in FIGS. 1 and 5, the connecting metal fitting is fixed by being inserted into a base metal fitting 2 fixed to a main member 1 such as a column and a slit 4 formed at an end of a horizontal member 3 such as a beam. The connecting plate 5 is divided into a plurality of connecting plates 5 so that the connecting plate 5 can be easily and firmly attached to the base metal fitting 2.

  The base metal fitting 2 is formed in a T-shape in plan view from the fixing portion 7 to the main trunk member 1 and the connecting portion 8 of the connecting plate. The fixing portion 7 and the connecting portion 8 may be formed in a T shape by welding two plates, but here, a thick iron plate is cut by a laser processing machine, The fixed portion 7 is formed by integrally providing circular protrusions at two upper and lower portions on the side edge, and bending the protrusions right and left. The right and left fixing parts 7 are not distributed with respect to the center in the vertical direction, but are provided at positions offset upward, and bolt insertion holes 13 are formed at the respective centers. The connecting portion 8 is configured by spot-welding side plates 15 on both sides of a slightly thick central plate 14, and a notch is formed in the edge portion on the front end side of the central plate 14. A plurality of locking holes 9 that open forward at the front end portion are arranged at equal pitches in the vertical direction. The shape of the locking hole 9 is a laterally convex shape that is symmetrical in the vertical direction, and the vertical dimension on the inlet side is smaller than that on the back side. The side plate 15 can also be attached to the central plate 14 with screws. When the base metal fitting 2 of this shape is attached to the main trunk member 1, the main trunk member 1 is dug and embedded with the fixing portion 7 so that the rear surface of the connecting portion 8 contacts the side surface of the main trunk member 1. .

  The connecting plate 5 is formed by cutting an iron plate having the same thickness as that of the central plate 14 of the connecting portion 8, and a downward hook-shaped claw piece 10 is formed on the edge on the base side, similarly to the locking hole 9 of the connecting portion. A plurality of drift pin insertion holes 16 for fixing the horizontal member 3 are formed on the front end side, and a drift groove 17 for the drift pin is formed on the upper and lower edges. is there. Since the vertical dimension of the tip of the claw piece 10 is smaller than the vertical dimension on the entrance side of the locking hole 9, the claw piece 10 has the locking hole 9 as shown in FIGS. 4 (a) and 4 (b). When the connecting plate 5 is moved downward, the claw piece 10 is locked in the locking hole 9 and prevented from coming off, as shown in FIG. Further, the pin 6 is inserted into the connecting portion 8 from the side, and the pin 6 prevents the claw piece 10 from moving upward in the locking hole 9, and the connecting plate 5 is fixed to the connecting portion 8.

  Next, a method for using the present connecting bracket will be described. Usually, the base metal fitting 2 is previously attached to the main trunk member 1 with bolts 18 at the factory, and the connection plate 5 is attached to each base metal fitting 2 after being carried to the site. The connection plate 5 is attached by inserting the claw piece 10 on the base side into the locking hole 9 of the base metal fitting connecting portion 8 from the front, and lowering the connection plate 5 downward to lock the claw piece 10 into the locking hole 9. After that, the pin 6 is inserted through the connecting portion 8 from the side to fix the connection plate 5. After that, like the conventional connecting fitting, the horizontal member 3 is lowered from above, and the connecting plate 5 is inserted into the slit 4 formed at the end of the horizontal member 3 and driven into the horizontal member 3 in advance. By hooking the drift pin 19a in the hooking groove 17 of the connection plate, the end surface of the horizontal member 3 is pressed against the side surface of the main member 1, and the fixing drift pin 19b is passed through the horizontal member 3 and the connection plate 5. The horizontal member 3 is connected and fixed to the main trunk member 1.

  FIG. 6 shows a second embodiment of the connection fitting according to the present invention. The base metal fitting 2 is provided with the connecting portion 8 of the connecting plate standing upright on the fixing portion 7 to the main member, and is formed in a T shape in a plan view. The connecting portion 8 has a side plate 15 welded only to one side of the thick central plate 14, and laterally convex cutouts 12 at equal pitches in the vertical direction at the edge of the central plate 14 on the tip side. It is formed. The notch 12 has a vertical dimension on the entrance side that is smaller than that on the back side and opens forward and laterally. The connecting plate 5 is provided with claw pieces 10 that are fitted to the notch 12 of the connecting portion with almost no gap at the base side edge at the same pitch as the pitch of the notches 12. When attaching the connecting plate 5 to the base metal fitting 2, the connecting plate 8 and the connecting plate 5 are connected to each other by fitting the claw piece 10 of the connecting plate into the notch 12 of the connecting portion from the side, A U-shaped coupling holder 11 is fitted from above to prevent the connection plate 5 from falling off. Instead of using the U-shaped coupling holder 11, as shown in FIG. 7, a plate-like coupling holder 20 can be attached with a screw 21 to prevent the connection plate 5 from falling off.

  In the two types of connecting brackets described above, the connecting plate 5 can be attached to the connecting portion 8 of the base bracket while changing the height step by step. As a result, as shown in FIGS. The height of the horizontal member 3 can be changed while attaching the base metal fitting 2 to the member 1 at the same height and making the hole positions of the insertion holes 22 of the drift pins 19a and 19b of the horizontal member 3 constant. Further, as shown in FIG. 9, the base metal fittings 2 are respectively attached to the main members (here, the trunk 1a and the first floor pillar 1b) separated vertically, and one connecting plate 5 straddling the two base metal fittings 2, 2. The tall horizontal member 3 (beam) can be connected using this. In the figure, reference numeral 23 denotes a hozo pipe connecting the first-floor pillar 1b, the trunk 1a and the second-floor pillar 1c, and 24 is a drift pin. In this case, since the connecting plate 5 is a single body, the connection strength of the beam 3 with respect to the moment is large, and the base metal fitting 2 can be attached in advance to the trunk 1a and the column 1b, so that the workability is good. Furthermore, since the height of the trunk 1a and the beam 3 does not have to be the same, a member that is thicker than necessary is not used, and a wooden frame having sufficient strength can be constructed economically. Further, when the beams are connected to the side surfaces adjacent to each other in an orthogonal state, the two base metal fittings 2 are used upside down so that the bolt insertion hole 13 of the base metal fitting is biased either vertically or vertically. Therefore, the bolts 18 do not interfere with each other.

  The connecting metal fitting of the present invention is not limited to the embodiment described above. The shape of the locking hole or notch is not limited as long as the vertical dimension on the inlet side is smaller than that on the back side, and may be, for example, a trapezoid, a triangle, a semicircle, or the like. The locking holes or notches of the base metal fitting and the claw pieces of the connection plate may each be one, but providing a plurality increases the connection strength between the base metal fitting and the connection plate. There is also an advantage that the height of the can be changed. The base metal fitting does not necessarily have to be attached to the main member at the factory, and may be attached on site.

It is a side view which shows 1st embodiment of the coupling metal fitting which concerns on this invention, Comprising: (a) is the state which integrated the base metal fitting and the connection board, (b) shows the separated state. It is a top view of the connection metal fitting of a first embodiment. It is a front view of the connection metal fitting of a first embodiment. In 1st embodiment, it is a figure which shows the procedure at the time of connecting a connection board to a base metal fitting in steps. It is a disassembled perspective view which shows the use condition of the coupling metal fitting of 1st embodiment. It is a disassembled perspective view which shows 2nd embodiment of the connection metal fitting which concerns on this invention. It is a disassembled perspective view which shows another example of the connection holder in 2nd embodiment. It is a longitudinal cross-sectional view which shows the usage example of the connection metal fitting which concerns on this invention. It is a longitudinal cross-sectional view which shows the usage example of the connection metal fitting which concerns on this invention.

Explanation of symbols

1, 1a, 1b, 1c Main member 2 Base bracket 3 Horizontal member 4 Slit 5 Connection plate 6 Pin (fixing tool)
7 Fixing portion 8 Connection portion 9 Locking hole 10 Claw piece 11, 20 Connection holder 12 Notch

Claims (4)

  A base metal fitting (2) fixed to the main trunk member (1), a connection plate (5) inserted into and fixed to a slit (4) formed at an end of the horizontal member (3), a fixture (6), The base metal fitting (2) has a fixing portion (7) to the main trunk member and a connecting portion (8) of the connecting plate, and the connecting portion (8) is a locking hole opened forward at the tip portion thereof. (9), the locking hole has a smaller vertical dimension on the inlet side than the back side, and the connection plate (5) is a claw piece (10 ), And the claw piece (10) is formed to be movable in the vertical direction in a state of being inserted into the locking hole (9), and the claw piece (10) is inserted into and removed from the locking hole (9) at the upper position. At the lower position, the claw piece (10) is locked in the locking hole (9) to prevent it from coming off, and the fixture (6) is inserted into the connecting portion (8) to move the connecting plate (5) up and down. To prevent Connecting fitting of wooden building components, characterized.   A base metal fitting (2) fixed to the main trunk member (1), a connection plate (5) inserted into and fixed to a slit (4) formed at an end of the horizontal member (3), and a coupling holder (11) The base metal fitting (2) has a fixing portion (7) to the main trunk member and a connecting portion (8) of the connecting plate, and the connecting portion (8) is a notch that opens forward at the tip thereof. (12), the notch has a smaller vertical dimension on the inlet side than the back side, and the connection plate (5) is fitted to the notch (12) of the connecting portion on the base side with almost no gap. The connection holder (11) has a claw piece (10) and clamps the base side of the connection plate (5) fitted to the connection portion (8) of the base metal fitting from both sides to prevent the connection plate from falling off. A connecting member for a wooden building member.   A plurality of the locking holes (9) or notches (12) are arranged in the vertical direction on the base metal fitting connecting portion (8), and a plurality of claw pieces (10) are provided on the connecting plate (5). A connecting bracket for a wooden building member according to claim 1 or 2. 4. The connecting bracket according to claim 1, wherein the locking hole (9) or the notch (12) of the base bracket connecting portion (8) has a laterally convex shape.

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