JP2005325630A - Connecting metal fittings for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide connecting metal fittings for a building capable of surely and firmly connecting a steel-made horizontal member installed as a beam or the like and a wooden member installed as a floor joist and a rafter or a sash bar or the like of a panel member thereon without using a connecting member such as a bolt or the like. <P>SOLUTION: The floor joist 2 installed on beams 1 and 1 is connected with the connecting metal fittings 3. The connecting metal fittings 3 consisting of a metal fitting body 4 longer than is wide in the shape of a rectangular plate and reinforced ribs 5 and 5 respectively projected to both edge end sections in the direction of a short side are approximately formed in a channel-shaped cross section. The reinforced ribs 5 and 5 are continued in the vertical direction of the metal fitting body 4, and they are projected at a right angle to the metal fitting body 4. Fitting slits 6 and 6 for fitting flanges 1a of the beams 1 in them and a plurality of nail holes 7 and 7 passing through nails 8 for stopping to the rafter 10 are respectively formed in both up and down end sides of the metal fitting body 4. Each fitting slit 6 crosses the rib 5 on one end side, and it is consecutively and horizontally formed in a predetermined length from one end side to the other end side in the direction of the short side of the metal fitting body 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structural joint metal fitting for joining a steel horizontal member installed as a beam and a wooden member installed as a joist or rafter, or a pier of a panel material, as well as a steel house. It is widely used in traditional wooden houses and wooden houses using the two-by method.

  In wooden buildings, especially for horizontal members such as beams and girders, high-quality large cross-section materials with few defects such as scratches and walnuts are used for strength, but it is sufficient until trees can be used as construction wood. It is necessary to care for generations to grow into a large scale, and it has become difficult year by year to obtain large cross-section timber suitable for horizontal members such as beams from the viewpoint of protecting forest resources in recent years.

For this reason, when planning large rooms and large openings, not only in steel houses but also in wooden houses using conventional and two-by methods, shapes such as H-shaped steel and groove-shaped steel are used as horizontal members such as beams and girders. Many steel materials have been used.
JP 2003-113656 A

  These sections are very good in terms of cross-sectional performance, but when installing wooden members such as rafters and joists on them, both members are quite different in material, so they are quite complicated both in terms of structure and construction. Is required to have a proper joint specification.

  In particular, in addition to wood-specific joint hardware such as nails and screws as joint hardware, many steel structure-specific joint hardware such as bolts, screws, and pins are also used. There were problems such as complicated and increased joining methods, making the construction very troublesome.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a construction metal fitting that can easily and reliably join a steel horizontal member and a wooden member.

  The construction metal fitting according to claim 1 is a construction metal fitting for joining a flange of a steel horizontal member and a wooden member, wherein the flange of the steel horizontal member is fitted. The slits are formed to have a plurality of holes for fastening to the wooden member, and reinforcing ribs orthogonal to the major axis direction of the fitting slit.

  In the present invention, particularly on the steel horizontal member side, the flange of the steel horizontal member is fitted into the fitting slit and fixed, so that a steel structure-specific joining member such as a bolt or a pin is not used. It can be easily fixed to reduce the number of joint members unique to the steel structure such as bolts, simplify the joint, and improve the construction efficiency.

  In addition, if a plurality of slits having different widths are formed as fitting slits in this case, it is possible to easily cope with horizontal members having different flange plate thicknesses. Moreover, required intensity | strength can be acquired by increasing the plate | board thickness of a joining metal fitting as needed. As a steel support material that can be used, it is also possible to use a shape steel having a flange, such as an H-shaped steel or a grooved steel, alone or a combination of two grooved steels back to back.

  As the width of the fitting slit is smaller than the thickness of the flange of the steel horizontal member to be fixed, the fitting slit is surely fixed. However, the fitting becomes difficult as the width becomes smaller. In the present invention, since the reinforcing rib is provided at the end of the metal joint, the metal fitting of the fitting slit having a width smaller than the thickness of the flange of the steel horizontal member is obtained by hitting the reinforcing rib with a hammer or the like. Even if it exists, it can fix reliably.

  The joining hardware and the wooden member can be fastened to the plurality of holes formed in the joining hardware of the present invention using a joining material usually used for the wooden member such as a nail or a screw.

  The building joint according to claim 2 is characterized in that, in the building joint according to claim 1, a narrow portion is provided between the tip end portion and the opening end portion of the fitting slit. is there.

  In particular, when the flange of the steel horizontal member is fitted to the fitting slit, the narrow portion of the fitting slit has a spring function so that the flange of the steel horizontal member is fitted to the fitting slit. By simply joining, the joint hardware can be firmly fixed to the steel horizontal member without using bolts, etc., so it can resist stress in both the vertical and horizontal directions acting on the joint. Therefore, stress can be reliably transmitted from the wooden member side to the horizontal member side. The width of the fitting slit may be smaller than the thickness of the flange of the steel horizontal member over its entire length, but in this case, it takes time to fit, so it is not the full length of the fitting slit. It is preferable that the narrow part is provided in the part.

  In any of the first and second aspects of the present invention, if a circular hole is provided at the tip of the fitting slit, when fitting the flange of the horizontal member to the fitting slit, the joint hardware Even if the hammer is struck with a hammer or the like, the joint metal can be securely fixed to the horizontal member without causing cracks due to stress concentration at the tip of the fitting slit.

  Further, if a fitting port is provided in the opening end portion of the fitting slit, the fitting slit can be easily positioned and positioned, and workability is improved. In this case, the fitting port is preferably formed so as to be wider than the fitting slit and gradually widen toward the opening end side.

  The invention according to claim 1 is an architectural joint for joining a flange of a steel horizontal member and a wooden member, and a fitting slit into which the flange of the steel horizontal member is fitted, By having a plurality of holes for fastening to the wooden member and reinforcing ribs orthogonal to the long axis direction of the fitting slit, the steel horizontal member is fitted to the fitting slit particularly on the steel horizontal member side. Since it can be fixed simply by fitting the flanges, it is possible to securely and firmly join the steel horizontal member and the wooden member by using the metal fitting for building of the present invention. .

  Since the narrow part is provided between the front-end | tip part and opening edge part of the fitting slit in the construction metal fitting of Claim 1, this invention of Claim 2 has the function of a spring. Therefore, simply by fitting the flange of the steel horizontal member to the fitting slit, the joint hardware can be securely and firmly fixed to the steel horizontal member, from the wooden member side to the steel horizontal member side. The effect is that stress can be reliably transmitted to the.

  1 to 3 show a joint between a steel horizontal member installed as a beam and a wooden member spanned as a joist on the beam, H beam is used for beam 1, and wooden member is used for joist 2. Square members are used, and both members are joined together by four pieces of construction joint metal (hereinafter referred to as “joint hardware”) 3.

  The metal joint 3 is formed in a substantially groove shape in cross section from a metal main body 4 having a vertically long rectangular plate shape and reinforcing ribs 5 and 5 provided at both end portions in the short side direction. The reinforcing ribs 5, 5 are continuous in the vertical direction of the hardware body 4 and are provided at right angles to the hardware body 4, and the fitting slits 6, 6 and a plurality of nail holes 7, 7 are formed.

  The fitting slit 6 is formed horizontally across a predetermined length horizontally from one end side to the other end side in the short side direction (width direction) of the hardware main body 4 and crosses the rib 5 on one end side. A circular hole 6 a is formed in the opening end of the fitting slit 6, and a fitting port 6 b having an opening width larger than the opening width of the fitting slit 6 is formed continuously to the fitting slit 6.

  In addition, narrow portions 6c and 6c smaller than the plate thickness of the flange 1a of the beam 1 have a predetermined length inside the fitting opening 6b on the opening end side of the fitting slit 6 and outside the hole 6a on the tip side. Therefore, the two portions of the front end side portion and the open end side portion of the fitting slit 6 are formed narrower than the plate thickness of the flange 1a of the beam 1, and the space between the narrow portions 6c and 6c is between the narrow portions 6c and 6c. It is formed wider than the plate thickness of the flange 1a. The nail holes 7 are respectively formed on the upper and lower sides of the fitting slit 6.

  Two metal joints 3 formed in this way are installed on both sides of the joist 2, and the lower end side of the beam 1 is formed by fitting the edge of the flange 1 a of the beam 1 into the fitting slit 6. The upper end side is fixed to the joist 2 by hitting a nail 8 from the nail hole 7 to the side of the joist 2 so that the steel beam 1 and the wooden joist 2 are joined to the four metal fittings 3. Are joined together.

  The metal joint 3 can reliably fit the edge of the flange 1a of the beam 1 to the fitting slit 6 by hitting the reinforcing rib 5 protruding from the edge of the metal main body 4 with a hammer or the like. it can.

  Further, the narrow portions 6c and 6c formed at the two positions of the fitting slit 6 are formed to be narrower than the plate thickness of the flange 1a of the beam 1, and the gap between the narrow portions 6c and 6c is determined from the plate thickness of the flange 1a of the beam 1. Since the narrow portion 6c, 6c has a spring function when the fitting portion 6 is fitted to the flange 1a of the beam 1 by being formed widely, the flange 1a of the beam 1 is fitted to the fitting slit 6 By simply doing so, the metal joint 3 can be securely and firmly fixed to the beam 1.

  In addition, since the circular hole 6a is formed at the tip of the fitting slit 6, even if the fitting slit 6 is struck to the flange 1a of the beam 1 and fitted, the tip of the fitting slit 6 There is no occurrence of cracks due to stress concentration.

  Furthermore, since the fitting opening 6b wider than the thickness of the flange 1a is provided at the opening end portion of the fitting slit 6, the fitting slit 6 can be easily aligned and positioned, and the workability is very good.

In the embodiment, the shape and size of the fitting slit 6 are particularly related to the width w ₂ of the single flange of the beam 1 (1/2 of the width w ₁ of the flange 1a) and the plate thickness t of the flange 1a. are set, 1/2 of the width _{w 2} length L of the strip flanges of the fitting slit 6 in particular (1/4 of the width _{w 1} of the flange 1a) above, the width _w 2 -5 mm piece flange (1/2 of the width _{w 1} of the flange 1a) is set below.

Further, abutment 6b opening width _{w 3} of the fitting of the fitting slit 6, the plate thickness t + 0.3 mm (upper and lower 0.15 mm) of the flange 1a, the width of the narrow portion 6c in thickness t-0.5 mm of the flange 1a It is set.

  FIG. 4 shows a joint between a steel horizontal member installed as a purlin and a wooden member spanned as a rafter, and H-shaped steel is used for the purlin 9 and square members are used for the rafter 10. Both members are joined by four joining hardware 3.

  In addition, although the example which used four joining metal fittings was shown as an Example, not only this but it can also reduce and attach the number of sheets. For example, the joining hardware 3 may be attached to only one side of a wooden member such as a joist, purlin, rafter, etc., or two joining hardware 3 may be attached diagonally according to the strength of the joint. Moreover, it is also possible to attach the single metal fitting 3 by increasing the thickness of the metal fitting 3 to increase the strength.

  According to the present invention, a steel horizontal member installed as a beam and a wooden member installed thereon as a joist or rafter, or a pedestal of a panel material can be joined very easily and firmly.

The joint part of a beam and joist is shown, (a) is the top view, (b) is a longitudinal cross-sectional view. It is a perspective view which shows the joining metal fitting for construction. The use state of a joint metal fitting for construction is shown, (a) is the top view, and (b) is an enlarged view of a fitting slit part. The junction part of a purlin and a rafter is shown, (a) is the top view, (b) is a longitudinal cross-sectional view.

Explanation of symbols

1 Beam (Steel horizontal member)
2 joist (wooden material)
3 Joint hardware (joint hardware for construction)
4 Hardware body 5 Reinforcement rib 6 Fitting slit 6a Hole portion 6b Fitting port 6c Narrow portion 7 Nail hole 8 Nail 9 Purlin 10 Rafter

Claims (2)

  A metal fitting for construction for joining a flange of a steel horizontal member and a wooden member, and a fitting slit into which the flange of the steel horizontal member is fitted, and for fastening to the wooden member An architectural joint metal comprising a plurality of holes and reinforcing ribs orthogonal to the major axis direction of the fitting slit.   2. A building joint according to claim 1, wherein a narrow portion is provided between the tip end portion and the opening end portion of the fitting slit.

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