JP2001311253A - Rafter binding metal and method for fixing rafter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rafter binding metal which enables the operator to efficiently install a rafter without nailing of the binding metal while holding the same with his hand, and is applicable to a case where a corner rafter is fixed to a rafter receiving member. SOLUTION: The rafter binding metal 10 for fixing the rafter 14 to the rafter receiving member 13 is constituted of a vertical plate portion 14 arranged on a side surface of the rafter 14, and a U-shaped portion 20 arranged on the rafter receiving member 13 so as to vertically pinch the same. The U-shaped portion 20 consists of an upper face connecting plate 17, a side face connecting plate 18 and a lower face connecting plate 19, to thereby form a U-shape in cross section. The vertical plate portion 16 and the U-shaped portion 20 are combined with each other by connecting a side edge of the side face connecting plate 13 of the U-shaped portion 20 to a lower half of a side edge of the vertical plate portion 16. Further, the vertical plate portion 16 and the U-shaped portion 20 each have a nail hole 21 for use in fixation thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rafter tie for fixing a rafter to a rafter receiving member and a method for fixing a rafter using the rafter tie.

[0002]

2. Description of the Related Art Rafters, which are mainly diagonal members for supporting a roof foundation, are attached to a rafter receiving member composed of a purlin, a purlin, a girder member and the like. The rafters need to be firmly fixed to the rafter receiving member so that the roof will not be overturned, and are therefore reinforced using a tie-down fastener.

As shown in FIG. 5, a trapezoidal rafter side plate 51 fixed to the side surface of a rafter 50 with a fixing nail and a fixing nail on the side surface of a rafter receiving member 54 as shown in FIG. The rafter-side plate 51 to be fixed and the right-angle trapezoidal receiving plate 52 extending vertically are
A rafter tie 53 formed by welding and integrating parts of these edges with each other has been used.

[0004] Such a conventional rafter binding hardware 53 is one in which after the rafter 50 is arranged on the rafter receiving member 54, the hardware 53 is nailed and fixed with a fixing nail from the sides thereof. , It is necessary to perform an operation of nailing while holding the rafter tying hardware 53 by hand.
For example, it was not possible to perform an efficient fixing work due to the fact that 3 was easily dropped. In addition, when the rafter 56 is fixed if the wife's upper frame is used as the rafter receiving member 55, if the thickness of the rafter receiving member 55 is less than the height of the receiving side plate 52, the rafter is provided on the receiving side plate 52. Since it becomes impossible to fix the rafter binding metal 53 using all the nail holes, there is a problem that a strong binding structure cannot be obtained. Furthermore, when the rafter is a corner block provided at the intersection of the roof surface in two directions, the rafter tie 53 having the same shape cannot be used, and it is necessary to separately prepare a tie for the corner block. there were.

SUMMARY OF THE INVENTION The present invention has been made in view of these conventional problems, and it is possible to efficiently attach rafters without performing nailing work while holding down hardware by hand, and to fix corner blocks. It is an object of the present invention to provide a rafter tie and a method for fixing a rafter which can be adopted even when performing.

It is another object of the present invention to provide a rafter tie which can easily obtain a strong tying structure in accordance with the thickness of the rafter receiving member.

[0007]

SUMMARY OF THE INVENTION The present invention provides a rafter tie for fixing a rafter to a rafter receiving member, wherein a vertical plate portion provided on a side surface of the rafter and the rafter receiving member are vertically sandwiched. The vertical plate portion and the U-shaped portion are formed of a U-shaped cross section composed of an upper surface bonding plate, a side surface bonding plate, and a lower surface bonding plate. The side edges of the side joint plate are joined together by joining at least the lower end portions of the side edges of the vertical plate portion, and the vertical plate portion and the U-shaped portion are respectively fixed. The above object has been achieved by providing a rafter tie which has nail holes formed therein (the invention according to claim 1).

In the rafter tie of the present invention, the U-shaped portion is joined to a side edge of the vertical plate portion such that a side joining plate extends perpendicular to the vertical plate portion. (The invention according to claim 2).

In the rafter binding of the present invention, it is preferable that a mark for positioning is provided on the upper surface joining plate of the U-shaped portion (the invention according to claim 3).

Further, in the rafter binding of the present invention, it is preferable that a claw for preventing displacement is formed on an upper surface joining plate of the U-shaped portion (the invention according to claim 4).

Further, in the rafter binding metal of the present invention, it is preferable that the rafter receiving member is a lumber for a framed wall construction method structure (an invention according to claim 5).

The present invention also relates to a method for fixing a rafter using any of the above rafter binding hardware, wherein the rafter receiving member is vertically held by the U-shaped portion in accordance with the mounting position of the rafter. By fixing the rafter tie to the rafter receiving member while doing so, and fixing the rafter to the vertical plate portion with the rafter placed on the U-shaped portion, through the rafter tie The object is achieved by providing a method of fixing a rafter, wherein the rafter is fixed to the rafter receiving member (the invention according to claim 6).

[0013]

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the rafter tie metal 10 of the present embodiment is, for example, an upper frame 1 that is a lumber for a framed wall construction method in a building formed by a framed wall construction method.
When fixing the rafter 14 with the girder 13 formed by superimposing the 1 and the head tie 12 as the rafter receiving member, or when fixing the rafter 25 when the wife side upper frame 15 is used as the rafter receiving member. It is used as a stopper for tight binding.

The rafter tie 10 of this embodiment
As shown in FIGS. 2A to 2D, rafters 14 and 2
5 and a rafter receiving member 1
3 and 15 are disposed so as to sandwich the upper and lower sides, and are formed of a U-shaped section 20 having a U-shaped cross section composed of an upper surface bonding plate 17, a side surface bonding plate 18, and a lower surface bonding plate 19, and a vertical plate portion. 16 and the U-shaped portion 20 are integrated by joining the side edge of the side joining plate 18 of the U-shaped portion 20 along the lower half of the side edge of the vertical plate portion 16. ,Also,
Each of the vertical plate portion 16 and the U-shaped portion 20 has a fixing nail hole 21 formed therein.

The vertical plate portion 16 is made of a metal plate having a thickness of about 1.2 mm, and has an upper base of 40 mm and a lower base of 85 m.
m, and has a rectangular trapezoidal planar shape with a height of 40 mm.
In addition, in the upper half rectangular portion of the vertical plate portion 16, nail holes 21 having a diameter of 5.5 mm are formed at four positions near each corner, and in the lower half triangular portion of the vertical plate portion 16, The U-shaped portion 20 is integrally joined along the vertical side edge.

The U-shaped portion 20 is formed by bending a metal plate also having a thickness of about 1.2 mm, and the upper joining plate 17 and the lower joining plate 19 have a width of 40 mm and a length of 45 m.
The side joining plate 18 has a substantially square shape with a width of about 40 mm and a height of about 40 mm. The upper surface bonding plate 17 and the lower surface bonding plate 19 are arranged in parallel in the same shape, and a gap of 38 mm is maintained between the lower surface of the upper surface bonding plate 17 and the upper surface of the lower surface bonding plate 19. The head joint 12 and the wife-side upper frame 15 made of lumber for the framed wall construction method can be sandwiched from above and below with almost no gap. Also, the side joint plate 18
And the lower surface joining plate 19 each have a diameter of 5.5 at the center thereof.
One mm hole 21 is formed. Further, a mark line 22 for alignment is drawn on the upper surface of the upper surface joining plate 17 so as to extend rearward from the center of the leading edge thereof. Furthermore, a claw 27 for preventing displacement is formed in the center of the upper surface joining plate 17 by making a cut in a triangular shape and curving it upward. The claw 27 for preventing the displacement is connected to the head joint 12 or the wife's upper frame 15.
Is temporarily fixed by being sandwiched between the U-shaped portions 20, and the nail 27 is beaten and bitten into the head tie 12 or the wife's upper frame 15 so that the aligned rafter tie 10 is aligned.
To prevent misalignment.

According to this embodiment, one side edge of the side surface joining plate 18 is joined along the vertically extending side edge of the lower half triangular portion of the vertical plate portion 16 and the side surface joining plate is joined. The plate 18 extends perpendicular to the vertical plate portion 16. In addition, by appropriately changing the extension angle of the side surface joining plate 18 with respect to the vertical plate portion 16 and joining them together, even when the fixing angle of the rafter with respect to the rafter receiving member is not perpendicular, the fixing operation is performed in accordance with this. Can be performed smoothly. In addition, the joining between the side edge of the vertical plate portion 16 and the side edge of the side surface joining plate 18 is performed by welding, or the joining portion can be formed by a bent portion when a metal plate is bent. .

Using the rafter tie 10 of this embodiment,
For example, in order to fix the rafter 14 to the girder 13 as a rafter receiving member, first, as shown in FIG. 3A, a core indicating the center of the mounting position of the rafter 15 is provided on the upper surface of the head joint 12 of the girder 13. The black ink 23 is struck, and a mark line 22 (see FIG.
The rafter tie metal fitting 10 is attached so that the head joint 12 is vertically sandwiched between the upper surface joining plate 17 and the lower surface joining plate 19 while aligning (see (b)). In order to prevent the attached rafter binding hardware 10 from being displaced, the claw 2
7 (see FIGS. 2A and 2B) is beaten into the head tie 12.

Next, as shown in FIG.
4 is driven into the nail holes 21 of the side surface joining plate 18 and the lower surface joining plate 19, and the rafter tie 10 is firmly fixed to the beam 13. In the driving operation of the fixing nail 24, since the rafter tie 10 is temporarily fixed to the girder member 13 with the head tie 12 interposed therebetween, there is no need to perform the operation while holding the rafter tie 10 and the metal 10 It is possible to work smoothly without worrying about dropping.
The head tie 12 to which the rafter binding hardware 10 is attached forms the integrated girder 13 on the upper frame 11. In addition, the lower surface joining plate 19 is composed of the head joint 12 and the upper frame 11.
It is not always necessary to drive the fixing nail 24 into the nail hole 21 because the fixing nail 24 is firmly fixed by being sandwiched between the two.

Further, as shown in FIG. 3 (c), the rafter 14 is brought into close contact with the inner surface of the vertical plate portion 16 of the fixed rafter binding hardware 10 so that the side surface of the rafter 14 follows. The rafter tie 10 is placed on the U-shaped portion 20 of the rafter binding hardware 10 to be disposed on the girder 13. Rafter binding hardware 1
Since 0 is previously positioned and fixed on the girder 13, the rafters 14 can be disposed with this as a guide, so that the rafters 14 can be arranged smoothly and accurately.

After the rafters 14 are arranged on the girder members 13, as shown in FIG. 3D, the side surfaces of the rafters 15 closely attached to the vertical plate 16 through the nail holes 21 of the vertical plate 16. The fixing nail 24 is driven toward. As a result, the rafter 15 is fixed to the rafter binding hardware 10, and the rafter 15
It is fixed to the girder member 13 via the rafter binding hardware 10. Here, the U-shaped portion 2 of the rafter binding hardware 10
In the case of No. 0, it is possible to form a strong binding structure by tightly fixing to the girder member 13 while sandwiching the head joint 12 therebetween.

Further, according to the present embodiment, the work for fixing the rafter 25 can be performed by the same work process if the rafter 25 is separated from the wife upper frame 15 (see FIG. 1). That is, the rafter tie 10 is attached to the wife upper frame 15 so as to be sandwiched from above and below, and is fixed by the fixing nails 24, while positioning the upper surface of the wife side upper frame 15 with black ink. After a while
Rafter 25 if it hangs on U-shaped part 20 of rafter binding hardware 10
Is placed on the wife's upper frame 15, and the fixing nail 24 is driven into the side of the rafter 25 through the nail hole 21 of the vertical plate portion 16, so that the rafter 25 is detached. It is fixed to the rafter binding hardware 10. By this, rafters 25
Is fixed to the wife-side upper frame 15 via the rafter binding hardware 10.

The rafter tie 10 of this embodiment
Can also be used when fixing a corner block provided at the intersection of the roof surface in two directions to the rafter receiving member. That is, as shown in FIGS. 4A and 4B, when fixing the corner block 26 to the corner of the girder 13 formed by superimposing the upper frame 11 and the head tie 12, Character part 20
The upper surface joining plate 17 and the lower surface joining plate 19 are arranged so that their longitudinal axes are along the extending direction of the corner block 26, and the corners of the girder 13 are brought into contact with the center of the inner surface of the side surface joining plate 18. In the contact state, the rafter binding hardware 10 is fitted into the head tie 12 and fixed. Thereafter, by mounting and fixing the corner block 26 on the U-shaped section 20 of the rafter binding hardware 10, the corner block 26 can be easily fixed to the corner of the beam 13.

The rafter binding of the present invention can be variously modified without being limited to the above embodiment. For example, the vertical plate portion and the U-shaped portion do not necessarily have to have the shape of the above-described embodiment, and the side edge of the side joining plate of the U-shaped portion is the lower end of the side edge of the vertical plate portion. It may be joined and integrated only in the part. In addition, the rafter receiving member does not necessarily need to be lumber for the framed wall construction method,
It may be a rafter receiving member composed of a frame member. Even when the heights (thickness) of the rafter receiving members are different, the gap between the upper surface joining plate and the lower surface joining plate of the U-shaped portion is appropriately adjusted to manufacture the rafter binding metal, so that the upper surface joining plate and the lower part can be formed. The rafter binding member can be easily fixed to the rafter receiving member while the rafter receiving member is sandwiched from above and below by the surface joining plate. That is, according to the rafter binding hardware of the present invention, a strong binding structure can be easily formed according to the thickness of the rafter receiving member.

[0025]

As described above in detail, according to the rafter tie and the method for fixing a rafter according to the present invention, the rafter can be efficiently attached without performing the work of nailing while holding the metal by hand. In addition to the above, the present invention can be employed when fixing a corner block to a rafter receiving member. Further, according to the rafter binding hardware of the present invention, a strong binding structure can be easily formed according to the thickness of the rafter receiving member.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view illustrating a situation in which a rafter is fixed to a rafter receiving member using a rafter binding hardware according to one embodiment of the present invention.

2 (a) is a front view, FIG. 2 (b) is a top view, FIG. 2 (c) is a bottom view, of the rafter binding metal according to one embodiment of the present invention.
(D) is a left side view.

FIGS. 3A to 3D are schematic perspective views illustrating working steps of a method for fixing a rafter using a rafter binding according to an embodiment of the present invention.

FIG. 4 illustrates a situation in which a rafter is fixed to a rafter receiving member using the rafter binding hardware according to one embodiment of the present invention.
(A) is a schematic front view, and (b) is a side view of (a) viewed from the right side.

FIG. 5 is a schematic perspective view illustrating a situation in which a rafter is fixed to a rafter receiving member using a conventional rafter binding hardware.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rafter binding metal 11 Upper frame 12 Head connection 13 Girder material (rafter receiving member) 14 Rafter 15 Wife side upper frame (rafter receiving member) 16 Vertical plate part 17 Upper surface joining plate 18 Side joining plate 19 Lower surface joining plate 20 Part 21 Nail hole 22 Mark line 23 Knitting mark 24 Fixed nail 25 Rafters Rafter 26 Corner wood 27 Nail (for preventing misalignment)

Claims (6)

[Claims] 1. A rafter tie for fixing a rafter to a rafter receiving member, comprising: a vertical plate portion disposed on a side surface of the rafter, and an upper surface joining plate disposed so as to sandwich the rafter receiving member up and down. , A side joining plate, and a U-shaped section having a U-shaped cross section formed of a bottom joining plate, wherein the vertical plate portion and the U-shaped portion are side edges of the side joining plate of the U-shaped portion. The vertical plate portion is integrated by joining along at least a lower end portion of a side edge portion thereof, and the vertical plate portion and the U-shaped portion are formed with respective fixing nail holes. Rafter tying hardware. 2. The U-shaped portion is joined to a side edge of the vertical plate portion such that a side surface joining plate extends perpendicularly to the vertical plate portion. The rafter tie of claim 1. 3. An alignment mark is provided on an upper surface joining plate of the U-shaped portion.
Or the rafter tie of 2. 4. The rafter tie according to claim 1, wherein a claw for preventing displacement is formed on an upper surface joining plate of the U-shaped portion. 5. The rafter tie according to claim 1, wherein said rafter receiving member is a lumber for a framed wall construction method. 6. A method for fixing a rafter using the rafter binding hardware according to claim 1, wherein the rafter receiving member is vertically moved by the U-shaped portion in accordance with a mounting position of the rafter. The rafter tie is fixed to the rafter receiving member while being sandwiched between the rafters, and the rafter is fixed to the vertical plate portion in a state where the rafter is placed on the U-shaped portion. A method for fixing the rafter to the rafter receiving member via a rafter.