JP2008075432A - Joint hardware constituting connection of structural member of wooden building or the like such as framework member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide joint hardware which makes possible the use of a solid material in a state that it has drawbacks (knots, susceptibility to crack, variations in cross-sectional dimensions or the like) of forcefully dried wood (a forcefully-dried material: called a KD material), which has an adjustment function used for the maintenance of strength even at the time of drying contraction, which can complement the crack and dimensional accuracy of the solid material, which can maintain strength, and which can correspond with the cross-sectional dimensions of many structural members in a joint hardware construction method where laminated lumber (usually called engineered wood: an EW material), which is constituted by processing lumber into plate-shaped single panels, by laminating the single panels by the plurality of sheets, by spreading the drawbacks such as knots, and by stabilizing strength and dimensional accuracy, is used as a structural member constituting a wooden building. <P>SOLUTION: The joint hardware is divided into the receiving strut side and the strut-to-be-received side. Then the joint hardware on the strut-to-be-received side is divided into the joint hardware used for fixing the upper end of the strut to be received and the joint hardware used for fixing the lower end of the strut to be received. Then the joint hardware used for fixing the upper end of the strut to be received and the joint hardware used for fixing the lower end of the strut to be received are screwed to the body hardware by a bolt, and are fixed to the structural member on the strut-to-be-received side. Fastening of the bolt has the function of preventing and adjusting cracks, and the change in the length of the bolt can correspond with the cross-sectional dimension of the structural member to be attached. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a metal joint that constitutes a joint portion of a structural member such as a frame assembly of a wooden building.

  Most of the joints between structural members of wooden buildings are processed and molded into a shape such as an ant or sickle, except for special structures, and are joined together.

  However, since the joining portion by the wood processing is formed by cutting and forming the wood as the structural member, the wood as the structural member is lost, and the cross-sectional performance of the structural member as the wood cannot be exhibited.

  In recent years, a joining method utilizing the cross-sectional performance of wood has been introduced by replacing the joint portion of wood, which is a structural member, with a metal joint metal from a cutting edge, and by joining more firmly and with less processing.

  However, although conventional joint hardware using metal has high strength, the joint hardware is fixed from the side of the structural member with a drift pin or the like, and wood is joined to each other. The structure is not limited to splitting, and is therefore limited to structures using expensive structural laminated materials produced through many processing steps that are considered to be relatively difficult to cause splitting.

Problems to be solved by the invention

  In view of such circumstances, by providing a joint hardware that can be used without selecting a material type by preventing the splitting of wood, which is a structural member, high strength using a relatively inexpensive solid material drying material It is possible to widely disseminate wooden buildings with joints.

Means for solving the problem

  The joint metal is divided into the support material side joint metal and the receiving material side joint metal body, the tight washer from the top of the structural member, and the supporting bottom plate. The support material side joint hardware is bolted to the structural member such as a column or horizontal member. Tighten and fasten the joints on the receiving material side by cutting off the end of a structural member such as a horizontal member in a rectangular shape, from the inner end of the rectangular notched portion toward the center in the direction of the material axis, and at the center of the tens of centimeters A hole with a diameter of several centimeters in the gap and the bottom of the end is processed to a depth of several centimeters vertically upward from the bottom of the structural member.

  Insert the main body of the joint into a structural member that has been machined and molded to the same shape, and install a bolted washer with an anti-splitting sharp projection on the top of the structural member and a support bottom plate with the sharp projection on the bottom. The bolts are screwed into the nuts fixed to the metal fittings from above and below from the upper and lower ends and fixed tightly.

The invention's effect

The fixing bolts are passed through the bolt guides of the binding washer and the supporting bottom plate, which are provided at the upper and lower ends of the structural members such as horizontal members, and the support bottom plate. Screw together with fixing bolts to integrate.
With this fixing method, structural members such as horizontal members are tightened from the upper and lower ends to prevent horizontal splitting of the structural members. Can be maintained.

Tightening washers attached to the upper and lower ends of structural members such as horizontal members, and horizontal members that enclose the receiving support material side joint metal fittings with sharp protrusions provided at the outer shape of the support bottom plate in a C-shape. It is possible to prevent the structural member from being split in the vertical direction, and at the same time to prevent horizontal splitting by tightening and fixing.
Thereby, it is possible to use the joint hardware without selecting the type of the structural member.

  Drawing [Fig.-20] is an embodiment of the joint part of the structural member according to the present invention. In the figure, 1 is the structural member (column), 2 is the horizontal member (beam), and A is the sharpening prevention sharp projection A tight binding washer, B is a supporting bottom plate with a split-protruding sharp protrusion, C is an inner covering receiving material side bonding metal, and D is a receiving material side bonding metal.

The receiving material side joining hardware is a structural member (column) 1 to the large diameter countersink hole 3 and the receiving material side joining hardware D fixing bolt insertion hole k to the bolt H and nut G. Screwed and fixed.
At this time, the projection 6 of the attachment portion of the receiving member side joint metal D is a structural member that resists the shearing force caused by the load by the washer E with the split-protruding sharp projection integrated with D (column) 1. Prevent splitting.

  The receiving-support-member-side joint hardware C has a center part of a horizontal member (beam) 2 that is a structural member cut out at a center of a few centimeters, and a gap 4 that is several millimeters wide from the end of the notch in the axial direction of the material. Cut to slightly longer than the joint metal in the center direction of the structural member and inserted into the gap 4, and the bolt is inserted from the upper end of the structural member into the bolt guide c of the binding washer A having a sharp split prevention sharp projection, and the supported member side joint metal It is screwed into a nut i provided on C and temporarily fixed to a structural member by a drift pin I.

  Further, a fixing bolt insertion hole 5 of a support centimeter B having a diameter of several centimeters is opened at the end of a slit 4 having a width of several millimeters provided from the lower end as the structural member toward the center of the horizontal member. The bolts are inserted into the bolt guides of the supporting bottom plate, and the fixing bolts j ′ and j ″ are screwed into the receiving material side joining hardware tightening nut i provided in the receiving material side joining hardware C, and completely Fix it.

  The receiving member side joining metal fitting C attached with the tight washer A, the supporting bottom plate B, and the drift pin to the top of the horizontal member 2 which is a structural member receives the receiving material side joining fitting D at the upper and lower ends. The bolt guide c of the binding washer A with a split projection preventing sharp projection and the c ′ and c ″ of the support bottom plate B are raised and processed into a circular shape so as not to interfere with the lip n.

  Further, the receiving side joint metal fitting C is bent into a flat shape by bending its tip, and a lower part of the flat plate m is formed into a semicircular shape to serve as a guide for insertion into the receiving material side joining hardware D, The rattle is prevented by reducing.

  With respect to the structural member (horizontal member) 2 containing the receiving-end-supported joint C, the binding washer A for the vertical splitting and the sharp projections of the supporting bottom plate B, and the vertical splitting for the horizontal splitting The tightening bolts j at the ends can clamp the structural member in the vertical direction, prevent splitting of the structural member in each direction, and maintain the cross-sectional performance of the structural member.

According to the abutting alloy material, the support bottom plate B is brought into close contact with the structural member 2 by tightening the tightening bolts j ′ and j ″ from the lower end by bolting from the upper and lower ends, and the structural member 2 is supported from the lower end. I can do it.
Even if the supporting bottom plate B is replaced with the binding washer A, the effect does not change.

  Tight washer top view   Tight washer back view   Tight washer front view   Tightening washer right side view   Support bottom plate back view   Support bottom plate plan view   Support bottom plate front view   Support bottom plate rear view   The right side view and left side view of the support bottom plate appear symmetrically   Received material side joint hardware plan view   Top view of the receiving metal side joint hardware   Bottom view of the receiving metal side joint hardware   Side view of the receiving joint left joint hardware   Received material side joint hardware right side view   Front view of jointing hardware on receiving material side   Back side view of receiving metal side joint hardware   The left side view and right side view of the receiving material side joint hardware appear symmetrically.   Top view of receiving material side joint hardware   Bottom view of jointing hardware   Sectional drawing which shows the joining state of a receiving material side, a to-be-supported material side joining metal fitting, and a structural member   The perspective view which shows the correlation of each component of a receiving material side and a receiving material side joining metal fitting

Explanation of symbols

1 Structural members (pillars)
2 Structural members (horizontal materials)
3 Countersink hole for mounting receiving material side joint fitting 4 Gap for mounting receiving material side joining hardware 5 Support bottom plate bolt insertion hole 6 Supporting material side joining metal projection A A Tightening washer B Support bottom plate C Supported material side Joint metal D Joint material side joint metal E Washer with sharp projection integrated with joint material side joint metal F Washer with sharp projection G Joint material side joint hardware fixing nut H Joint material side joint hardware attachment bolt I Drift pin for mounting the receiving metal side fitting hardware a Tightening washer disk partial cross section b Support bottom plate flat plate portion c, c ', c "Bolt guide e Drift pin for mutual bonding of metal fittings f Bearing material side bonding metal drift pin insertion hole g Pulling taper hole h Pulling clearance i Bending material side fitting metal tightening nut j Tightening bolt k Mounting bolt insertion hole m Receiving material side joining metal fitting insertion guide n Receiving material of receiving material side joining metal Joining hardware inlet edge t support the bottom plate structural member insertion raised portions

Claims (4)

When joining wooden structural members, bolts are used to fix the receiving member side joint hardware to the structural members, and bolts are used from the vertical direction to nuts fixed to the joint hardware body from the upper and lower ends of the structural members. Tightening and fixing method that integrates joint hardware to structural members at the same time.
A wood joining apparatus having an adjustment function capable of preventing horizontal splitting due to tightening from the upper and lower ends and adjusting a dimensional change due to drying shrinkage of the structural member by tightening bolts from upper and lower ends. Since the tight washer is attached to the structural member in advance, the metal plate is bent and the bolt support guide cylinder is erected and integrated, and a part of the lower flat plate part is cut off slightly larger than the U-shape of the receiving material side joint metal fitting. When inserting into the U-shaped space of the receiving material side joint metal fitting, it can be inserted without interfering with the receiving material side joint metal fitting, and it can be joined by tightening the fixing bolt to support the drying shrinkage of the structural member, at the same time Bonding hardware that fastens the main body and each component to a structural member.
The support bottom plate is fitted into the gap where the receiving-material-side joint metal is inserted, and the metal plate is bent at both ends like the binding washer to raise the bolt guide and prevent interference with the receiving-material-side joint. By installing the preventive sharp protrusion, it prevents the structural member from being split in the vertical direction together with the binding washer with the split split preventing sharp protrusion at the upper end, and prevents the structural member from being lowered in the proof stress by preventing the structural member from being split in both the horizontal and vertical directions.   The function to be able to arrange the received joint side metal fittings with several parts for each structural member part, and to support other structural members with different cross-sectional dimensions and the upper end horizontally, supported from the lower end of the structural member.   The tip of the receiving joint is bent and the tip is flattened, and the bottom of the flat plate is processed into a semicircular shape for smooth insertion as a guide for insertion into the receiving joint, and the receiving joint and receiving Function to reduce backlash due to clearance of support joint hardware.

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