JPH09242731A - Special bolt for wooden building and metallic material for wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more easily install a bolt and a nut to be used for a wooden building at execution work time in a special bolt for a wooden building and a metallic material for a wooden building which are used to join or reinforce wood in a wooden building. SOLUTION: In a special bolt 1 to be used to join or reinforce wood in a wooden building, the bolt is provided with a shaft part 2 to be embedded in wood, a head part 3 which is formed on one end of the shaft part 2 and is used for driving work when the shaft part 2 is embedded in wood and a screw part 4 which is formed on the other end of the shaft part 2 and protrudes from wood after the shaft part 2 is embedded in wood, and a fin-shaped protrusive part 5 to generate rotation stopping reaction against nut fastening torque applied from the screw part 4, is protrusively arranged around the shaft part 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting used for joining or reinforcing timber in wooden construction, and more particularly to a special bolt for wooden construction and a metal fitting for wooden construction, which is improved in workability of assembling.

[0002]

2. Description of the Related Art In a wooden construction such as a conventional wooden construction structure, in order to improve the strength of the building, a metal or metal fitting (hereinafter,
It is effective to use a metal object), and in recent years, a metal object has been frequently used for a connecting portion between timbers and the like.
In particular, in conventional wooden construction structures, timbers were tied together mainly using timbers and mortises that did not use metal at all, or mainly nails. It has been found that it is difficult to ensure sufficient durability against external forces such as earthquakes and wind pressure. On the other hand, it has also been found that it is extremely effective to use various kinds of metal fittings for connecting the respective parts of the wooden construction in order to improve the strength of the building.

Therefore, the use of metal fittings in wooden construction is increasing, and in such metal fittings for wooden construction,
Although not shown, short metal parts, open metal parts, fold metal parts,
In addition to relatively simple hardware such as twisted hardware, bent hardware, bracket hardware, corner hardware, chevron plate, especially for connecting the braced end to the connection between the pillar and the base or the connection between the pillar and the girder. Bracing plates, as well as battledore bolts and flints, and hole-down hardware used by being applied to, for example, adjacent surfaces of orthogonal lumbers.
And so on.

[0004] Such wooden construction hardware is joined to timber such as pillars by using nails, bolts, nuts, etc., and is considered to be particularly effective for increasing the strength (seismic resistance and wind pressure resistance) of the building. There is a metal fitting that uses bolts and nuts to connect with wood. In addition to the bolts and nuts used to connect the hardware to the wood, it is also considered effective to use the bolts and nuts directly to connect the woods themselves (wood to wood) to improve the strength of the building. ing.

[0005]

By the way, as described above, in order to improve the strength of the building, it is effective to use many metal fittings and bolts and nuts. Therefore, if the strength of the building is to be increased, Inevitably, the number of bolts and nuts used will increase. However, tightening bolts and nuts is not as easy as nailing.
Increasing the number of nuts used causes a problem of increasing the burden of construction work for a building.

That is, in order to fasten the bolts and nuts, first, the bolts are inserted into the bolt holes formed in the wood in advance, and the required points of the metal object are applied to the bolt tips protruding from the wood. , Screw the nut onto the tip of the bolt. However, when screwing the nut, it is necessary to tighten the nut while holding the head of the bolt so that the bolt does not rotate. For such work, it is necessary to make full use of both hands at the same time, and in particular, when working at a high place, a heavy burden is imposed on the worker, and work efficiency is likely to decrease.

By the way, a square root bolt has also been developed in which a detent portion having, for example, a quadrangular cross-sectional shape is formed on the side of the head of the bolt that is joined to the metal object so that the bolt does not rotate. When using a square root bolt with such a rotation stop part, make a fitting hole on the side of the metal object that is fixed by the square root bolt, and fit the rotation stop part of the square root bolt into the fitting hole. , The rotation of the square root bolt is prevented.

However, even with such a technique, since the bolt itself is not fixed at all, it is necessary to tighten the nut while supporting the bolt, which can greatly simplify the mounting work of the bolt and the nut. is not. The present invention was devised in view of the above-mentioned problems, so that the mounting work of bolts and nuts used in wooden construction can be greatly simplified, and it is possible to more easily construct a highly durable wooden construction. The purpose of the present invention is to provide a special bolt for wooden construction and a hardware for wooden construction.

[0009]

Therefore, the special bolt for wooden construction of the present invention is a special bolt used for joining or reinforcing wood in a wooden construction, and a shaft portion embedded in the wood, A head for striking work, which is formed at one end of the shaft portion when the shaft portion is embedded in the wood, and from the wood after the shaft portion is formed at the other end of the shaft portion after the shaft portion is embedded in the wood. It is characterized in that it is provided with a projecting screw part, and that a fin-shaped projection part for generating a rotation preventing reaction force against the nut tightening torque applied from the screw part is provided around the shaft part in a protruding manner. .

Further, the metal structure for wooden construction of the present invention is a metal structure used for connecting or reinforcing wood in a wooden structure, and has a bolt insertion hole through which a bolt for connecting the metal structure to the wood is inserted. The bolt is embedded in the timber, a head formed at one end of the shank for hammering work when the shank is embedded in the timber, and the other end of the shank. And a screw portion projecting from the wood after the shaft portion is embedded in the wood, and a rotation preventing reaction force that resists the nut tightening torque applied from the screw portion is provided around the shaft portion. It is characterized in that it is configured as a special bolt having a fin-shaped projection portion to be generated and a cut portion corresponding to the cross-sectional shape of the fin-shaped projection portion is attached to the bolt insertion hole.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings, and FIGS. 1 to 13 show a first embodiment of the present invention. First, the embedded bolt for wooden construction will be described. As shown in FIG. 1, the embedded bolt for wooden construction 1 includes a shaft portion (bolt body portion) 2, a head 3, and a screw portion 4. ing.

The shaft portion 2 is embedded in a bolt hole previously drilled in wood. The head portion 3 is a portion formed at one end (rear end) of the shaft portion 2 and hitting a hammer or other impact tool when the shaft portion 2 is embedded in wood, and like a nail head, a thin circle. It is formed in a plate shape. The screw part 4 is
It is formed at the other end (tip) of the shaft portion 2 opposite to the head portion 3, and the screw portion 4 is configured to protrude from the surface of the wood after the shaft portion 2 is inserted into the wood.

A fin-shaped projection 5 is formed around the shaft 2. The fin-shaped protrusions 5 generate a rotation preventing reaction force that resists the nut tightening torque applied from the screw portion 4, and here, as shown in FIG. Two pieces are provided so as to change the phase by about 180 °, and have a drag generating surface 6 formed on a flat surface along the diameter surface of the shaft portion 2.

Each of the fin-shaped protrusions 5 shown here corresponds to a right-hand thread, and the reaction force generating surface 6 has a bolt 1 when the right-hand thread nut is screwed and fastened to the threaded portion 4 formed on the right-hand thread. Although it is formed so as to generate a reaction force with respect to the right-handed screw torque applied to, when the left-handed screw nut is screwed and fastened, the reaction force generation surface 6 may be formed in the rotation direction opposite to that in FIG. .

Further, an inclined surface 7 is formed so as to form a pair with the drag generating surface 6, and the drag generating surface 6 and the inclined surface 7 are formed.
The fin-shaped projection 5 is formed in a shape that tapers outward in the circumferential direction of the shaft 2 and becomes slightly narrower toward the screw 4 side. Therefore, the fin-shaped protrusion 5 is formed so as to have a wedge-shaped cross-section in the cross-section (cross-section orthogonal to the axis of the shaft 2), and its longitudinal cross-section (shaft 2
(A cross section parallel to the axis of the above) has a tapered cross section.

Further, an inclined chamfer 8 is formed at the end (tip) of the fin-shaped projection 5 on the screw 4 side. In constructing such an embedded bolt for wooden construction, the tip of the bolt 1 is applied to a bolt hole drilled in wood, and a hammer or the like is applied to the head 3 to push the bolt 1 into the wood. The fin-shaped protrusion 5 is driven together with the screw portion 4 and the shaft portion 2. At this time, the fin-shaped protrusion 5 advances inside the wood as shown by an arrow A1 shown in FIG. 1 (C). As described above, the fin-shaped protrusion 5 has the wedge-shaped cross section or the tapered cross-section as described above, and the inclined chamfer 8 is formed at the tip in the traveling direction. Can be easily and smoothly driven into the wood.

Further, as shown in FIG. 1 (A), the fin-shaped protrusions 5 are driven into the wood by the fin-shaped protrusions 5.
Is directed so as to follow the wood grain direction (fiber direction) as indicated by the arrow A2, so that cracking of the wood or the like due to driving can be avoided. It is also possible to drive 5 into wood smoothly.

Next, the wooden construction hardware according to the present invention will be described. This wooden construction hardware is fixed through the above-described special wooden construction bolt 1, and here, a battledore bolt will be described as an example of the hardware with reference to FIG. 2. As shown in FIG. 2 (B), this battledore bolt 10 as a wooden construction hardware is coupled to a shaft portion 11, a screw portion 12 formed at one end of the shaft portion 11, and the other end of the shaft portion 11. The plate-shaped portion 13
A bolt insertion hole (hereinafter referred to as a bolt hole) 14 for inserting a bolt is formed in the. In the present battledore bolt 10, the bolt hole 14 is formed in such a shape that the shaft portion 2 of the embedded bolt 1 for wooden construction can be inserted.

That is, since the fin-shaped projection 5 is formed on the shaft portion 2 of the bolt 1 as described above, the fin-shaped projection 5 is formed in the circular bolt hole 14 corresponding to the size of the main body of the shaft portion 2. Since the portion 5 interferes, the shaft portion 2 cannot be inserted. Therefore, the circular bolt hole 14 is provided with a notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5 so that the shaft 2 can be inserted together with the fin-shaped protrusion 5.

By the way, FIG. 2A shows the battledore bolt 1
It is a figure which shows the use condition of 0 and the special bolt 1. Wood 2
1 is, for example, a through column, and the wood 22 is, for example, a beam.
A bolt hole 21A through which the battledore bolt 10 is inserted is formed in the through column 21, and a bolt hole 22A through which the special bolt 1 is inserted is formed in the beam 22. To install the battledore bolt 10 and the special bolt 1 in such a place, for example, first, the battledore bolt 10 is inserted into the bolt hole 21A, and then the special bolt 1 is driven into the bolt hole 22A. Good.

As shown in FIG. 2A, in the example shown here, the battledore bolt 10 is mounted on the lower surface side of the beam 22, and the special bolt 1 is inserted from the lower surface side of the beam 22. The plate-shaped portion 13 of 10 is sandwiched between the head portion 3 of the special bolt 1 and the wood (beam) 22. Then, subsequently to this, the special bolt 1 protruding from the wood 21, 22 and the threaded portions 4, 12 of the battledore bolt 10
By screwing and fastening the nut 30 to the special bolt 1
And the construction of the battledore bolt 10 is completed.

When the nut 30 is screwed, a washer 32 is generally attached before inserting the nut so that the tightening force of the nut 30 acts on the wood through the washer 32. To do. A special nut as shown in FIG. 2 may be used as the nut 30. This special nut 30 has a washer 32 integrally provided on one end surface of a nut body 31. In order to integrate the washer 32 with the nut body 31, the nut body 31 and the washer 32 must be combined from the beginning. The nut main body 31 and the washer 32 may be separately manufactured and then joined together. As the coupling means in the latter case, simple means such as adhesion by an adhesive may be used in addition to welding.

That is, the special nut 30 is the nut body 3
It is intended to simplify the process of nut tightening work by integrating 1 and the washer 32.
This is because if the washer 32 and the washer 32 are integrated in advance, it is not necessary to search for the washer and insert the washer into the screw portion during the nut fastening operation. Therefore, the nut body 3
It is not necessary that the 1 and the washer 32 be firmly connected.

That is, if a large tightening torque is applied at the time of tightening the nut, the washer 32 may be removed from the nut body 31, and the washer 32 may be removed from the nut body 31 at least before the special nut 30 is inserted into the screw portion. It is enough if there is not. Also, like this,
The washer 32 comes off from the nut body 31 when tightening the nut,
If the nut body 31 and the washer 32 are separate bodies,
It is also conceivable that the effect of the washer 32 itself is fully exerted.

When connecting the nut body 31 and the washer 32, it is a matter of course that the axes of the nut body 31 and the washer 32 are aligned so that they can be mounted on the bolt. By the way, the fin-shaped projection portion 5 of the bolt 1 of the present embodiment is formed so that the amount of projection gradually decreases from the head portion 3 of the shaft portion 2 toward the tip end side where the screw portion 4 is present. Since the fin-shaped protrusion 5 is not formed in the vicinity, for example, the bolt hole 1 formed in the plate-shaped portion 13 of the battledore bolt 10
The shape and size of the cut portion 15 of No. 4 may be set according to the positional relationship with the bolt 1 at the time of construction.

For example, as shown in FIG. 2, in the case of the lower battledore bolt 10 which is installed by disposing the bolt hole 14 in the shaft portion 2 near the head portion 3 of the special bolt 1, the fin-shaped projection portion 5 is used.
Since a portion having a large amount of protrusion penetrates at the base portion even in the inside, it is necessary to form the notch portion 15 in accordance with this, but the battledore bolt 10 is the screw portion 4 of the special bolt 1.
When the bolt hole 14 is arranged in the shaft portion 2 close to, the tip portion of the fin-shaped projection portion 5 penetrates with a small amount of protrusion, and accordingly, the cut portion 1 is correspondingly formed.
You may make 5 small.

As described above, by forming the cut portion 15 in accordance with the size and shape of the corresponding fin-shaped projection portion 5, the number of missing parts of the wooden construction hardware such as the plate-shaped portion 13 of the battledore bolt 10 is minimized. However, it becomes possible to use the special bolt 1 together. In particular, the depth of the notch 15 of the battledore plate bolt 10 is set to the protrusion amount of the left and right fin-shaped protrusions 5 (that is, the outer edge 5 of the fin-shaped protrusion 5).
(Distance to A) or slightly deeper than this, when the special bolt 1 is driven in, the protruding amount of the fin-shaped projection 5 in the battledore bolt 10 gradually increases, and the special bolt is increased. When the driving of No. 1 is completed, the left and right fin-shaped protrusions 5 of the special bolt 1 are aligned in the left and right notches 15, 15, and the axial position of the battledore bolt 10 is adjusted and fixed accordingly. Will be done. When the battledore bolt 10 is thus fixed, there is an advantage that the nut can be fastened thereafter without supporting the battledore bolt 10.

Of course, one general-purpose metal object (here, the battledore bolt 10) in which the notch 15 of the bolt hole 14 is formed large so that the most protruding portion of the fin-shaped protrusion 5 can penetrate therethrough. Only one piece may be prepared, and this one kind of metal may be used for all the construction sites where the fin-shaped projections 5 penetrate. The special bolt for wooden construction and the hardware for wooden construction according to the first embodiment of the present invention,
Since it is configured as described above, these bolts, metal fittings, and nuts can be used at various connection points of wooden construction.

For example, FIGS. 3 to 13 show examples of use of bolts and metal fittings according to the present invention. FIG. 3 shows an example of application to a place where the beam 22 and the body differences 23, 23 are connected to the through column 21, and the strip metal fitting 41 is installed so as to connect the respective ends of the body differences 23, 23. Joints J1, J2, J3 to the body difference 23, 23 of the rectangular metal piece 41 and the through column 21
The special bolt 1 for real wooden construction can be used.
The bolt hole of the strip metal piece 41 is provided with a notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5 as shown in FIG. 2B, for example.

In this case, the strip metal piece 41 may be applied to a desired place and the bolt 1 may be driven from the side of the strip metal piece 41 to which the strip metal piece 41 is applied. The special bolts 1 are driven into the bolt holes formed in the differences 23, 23 and the through-columns 21 so that the threaded portions are projected on the surfaces shown as connection points J1, J2, J3 in FIG. The nut 30 or other common nut may be fastened. Further, some of the special bolts 1 may be driven into the bolt holes in advance, and the other special bolts 1 may be driven after the strip metal piece 41 is applied.

FIG. 3 also shows an example in which the battledore bolt 10 and the special bolt 1 are used in combination, but the construction of this is almost the same as in FIG. FIG. 4 shows an example of application to a portion where the body differences 23, 23 are joined to the through column 21, and a fold metal fitting 42 is installed so as to connect each end of the body differences 23, 23. Joints J4, J5, J to the body difference 23, 23 of the metal 42 and the through column 21
6, the special bolt 1 for the wooden construction can be used for J7. As shown in FIG.
As shown in (B), a cut portion 15 corresponding to the cross-sectional shape of the fin-shaped projection portion 5 is provided.

In this case as well, the body differences 23, 23, the through columns 21
In the bolt hole formed on the
The special bolt 1 is driven so that the threaded portion protrudes on the surface shown as 5, J6, J7, and the special nut 30 or another general nut is fastened to the protruded threaded portion. FIG.
Battledore bolts 1 for connecting beams 22 to through columns 21
Fig. 6 shows an application example of the combined use of 0 and the special bolt 1.
Does not show an application example relating to the combined use of the battledore bolt 10 and the special bolt 1 at the position where the beam 22 is coupled to the body difference 23,
Since this is a construction situation which is almost the same as that of FIG. 2, the explanation is omitted.

In addition, FIG. 7 shows an application example in which the battledore bolt 10 and the special bolt 1 are used together at the position where the horizontal member 24 is connected to the through column 21, and the flat metal object 43 of the special bolt 1 is connected. Application examples are shown below. Construction of the battledore bolt 10 and the special bolt 1 is the same as that already described with reference to FIG. Further, the flat metal object 43 is installed by passing it through the through-column 21 and the horizontal member 24. The special bolt 1 is used at the connecting portions J8 and J9 of the flat metal object 43 to the through-column 21 and the horizontal member 24. can do.

Also in the bolt holes of the flat metal object 43, for example, as shown in FIG.
As shown in (B), a cut portion 15 corresponding to the cross-sectional shape of the fin-shaped projection portion 5 is provided. Also in this case, the special bolt 1 is driven into the bolt holes formed in the body gaps 23, 23 and the through post 21 so that the threaded portions are projected on the surfaces shown as the connecting points J8, J9 in FIG. The special nut 30 or another general nut is fastened to the threaded portion.

FIG. 8 shows an example of application of the special bolt 1 to a portion where the second-order beam 22 is coupled onto the body difference 23. In such a connection (supporting the pedestal), a connecting metal piece 44 as shown in the figure is used, but the special bolt 1 for the wooden construction should be used at a connecting portion of the connecting metal piece 44 to the second-order beam 22 and the body gap 23. You can 2B, for example, the notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5 is also provided in the bolt hole of the combined metal piece 44.

9 and 10 show an example of application of the present bolt to the portion where the braces 25 are connected to the joint between the column 21 and the base 26 (or girder). As shown in the figure, a bracing box (brace box) 45 is used here, but this special bolt 1 is used to connect the brace box 45 and the base 26 and the brace box 45 and the pillar 21. Can be used. The bolt hole of the brace box 45 is also provided with a notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5, as shown in FIG. 2B, for example.

In this case, with respect to the base 26, the special bolt 1 is driven into a previously drilled bolt hole so that the screw portion 4 projects toward the mounting side of the brace box 45. That is,
As shown in FIG. 10, the special bolt 1 is driven into the bolt hole from the surface of the base 26 on the side of the foundation 27. Then, the bolt hole of the brace box 45 is inserted into the protruding screw portion 4 to fasten the special nut 30 or another general nut. The bottom surface of the base 26 has a seat 26
A is formed, and the head 3 of the special bolt 1 is fitted into the seat 26A so that the head 3 does not protrude from the lower surface of the base 26.

As for the pillar 21, the brace box 45 is applied to the pillar 21 and then the brace box 4 is inserted.
The special bolt 1 is driven into the bolt hole of 5 and the bolt hole of the pillar 21 from the brace box 45 side. As a result,
A special nut 30 or another general nut is fastened to the threaded portion 4 protruding to the opposite side of the column 21. The brace 25 and the brace box 45 may be connected to each other by using the special bolt 1 instead of using the flat head bolt 33 as shown in the drawing.

FIG. 11 shows an application example of the present bolt for interposing the struck beam 28 at the joint between the land beam 28A and the gable land beam 28B. As shown in the figure, a fire beam 28 and a land beam 28
The special bolt 1 is provided between A and A, and between the firing beam 28 and the gable land beam 28B. In the case of the firing beam 28 that is obliquely joined in this way, it is necessary to use the special bolt 1 having a long axial length. In particular, the special bolt 1 that is inserted into the gable land beam 28B is attached to the left and right firing beams 28 together. In order to insert it, it is necessary to use a special bolt 1 having a longer shaft length.

Then, the firing beam 28 is applied to the land beam 28A or the gable land beam 28B, and the firing beam 28 and the land beam 28A are applied.
Aligning the bolt holes of and the bolt holes of the firing beam 28, the gable land beam 28B, and the other firing beam 28, and driving the special bolt 1 from the firing beam 28 side, as a result,
A special nut 30 or another general nut is fastened to the rear surface of the land beam 28A or the threaded portion 4 projecting to the rear surface side of another firing beam 28.

However, in the case of the bolt 1 used in this way, since the axial center line direction of the bolt 1 intersects with the surface of the striking beam 2 at an angle without intersecting at right angles, it acts like a spacer for correcting this inclination. Deal with the use of hardware. That is, the spacer metal piece 47 is attached to the inside of the head 3 of the bolt 1, the bolt 1 is inserted, and the spacer metal piece 47 is attached to the screw portion 4 projecting to the rear surface side of another firing beam 28. Tighten the nut. However, as shown in FIG. 2B, for example, as shown in FIG. 2B, a notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5 is provided in the bolt hole of the spacer metal piece 47 mounted inside the head 3 of the bolt 1. There is a need to.

12 and 13, the column 21 and the body difference 2 are shown.
To the joint with 3, the hole down hardware (attracted hardware) 4
An example of application of the present bolt to a portion to be joined using 6 is shown. As shown in the figure, the special bolt 1 can be used for connecting the hole-down hardware 46 and the pillar 21 and for connecting the hole-down hardware 46 and the barrel difference 23. The bolt hole of the hole-down hardware 46 is also provided with a notch 15 corresponding to the cross-sectional shape of the fin-shaped protrusion 5, as shown in FIG. 2B, for example.

Also in this case, as shown in FIG. 12, the special bolt 1 is inserted into the bolt hole formed in the column 21 or the body difference 23 so that the screw portion 4 projects toward the hole-down metal fitting 46 mounting side. A special nut 30 or another general nut may be fastened to the threaded and projecting screw portion 4, and
As shown in FIG. 13, a hole down hardware 46 is applied to a required position of the pillar 21 or the body difference 23, and the bolts formed on the pillar 21 or the body difference 23 from the bolt hole side of the hole down hardware 46. The special bolt 1 may be driven into the hole, and the special nut 30 or another general nut may be fastened to the threaded portion 4 projecting to the surface of the column 21 or the body difference 23 opposite to the hole-down hardware 46.

Further, the upper and lower hole-down hardwares 46, 4
The special bolt 1 commonly used for 6 may be configured such that one of the hole down hardwares 46 is mounted and then driven, and then the other hole down hardware 46 is mounted. Since the special bolt for the wooden construction and the hardware for the wooden construction can be constructed in this manner, the following effects and advantages can be obtained.

First, the special bolt 1 for the wooden construction has the advantages that it can be easily driven, that wood is not easily damaged, and that bolts and nuts can be easily attached. In other words, the present bolt 1 has the screw portion 4 and the shaft portion 2 inserted into the bolt holes previously drilled in the wood,
Drive the head 3 of the bolt 1 while hitting it with a hammer or the like. At this time, the direction of the fin-shaped projection 5 is changed to that shown in FIG.
(A) Orient the wood along the wood grain direction (fiber direction) as indicated by the arrow A2. As a result, it is possible to avoid cracking of the wood due to the entry of the fin-shaped protrusions 5 when the bolt 1 is driven, and it is also possible to smoothly drive the fin-shaped protrusions 5 into the wood.

Further, since the fin-shaped protrusion 5 has a wedge-shaped cross section or a tapered cross-section, and the inclined chamfered portion 8 is formed at the tip in the traveling direction, the fin-shaped protrusion 5 also has this point. Can be easily and smoothly driven into the wood. Then, as described above, the nut 30 or the like is screwed into the bolt 1 when mounting the wooden construction hardware, but when the nut is fastened, the screw portion 4
Although a nut tightening torque is applied from the bolt 1 to the bolt 1, a rotation preventing reaction force is generated in the fin-shaped projection 5 so as to counteract the nut tightening torque, so that the bolt 1 does not rotate and the nut is securely rotated. It can be fastened and the metal objects can be fixed more firmly. In particular, since the fin-shaped projection portion 5 has the drag generating surface 6 formed on a plane along the diameter of the shaft portion 2, a large anti-rotation reaction force can be generated in a large area of the drag generating surface 6. .

Although the battledore bolt 10 has been described as an example of the hardware for the wooden construction, the notch 1 corresponding to the cross-sectional shape of the fin-shaped protrusion 5 of the bolt 1 is formed in the bolt insertion hole 14.
5 is attached, the fin-shaped protrusion 5 does not interfere even when the shaft portion 2 of the bolt 1 is inserted into the bolt insertion hole 14, and the special bolt 1 is securely inserted into the bolt insertion hole 14. Can be used in. Note that, although specific examples of the present wooden construction hardware are shown in FIGS. 5 to 13, the hardware of the present invention is not limited to these and can be widely applied to various wooden construction hardware. Is.

By the way, as a second embodiment of the special bolt for wooden construction, a special bolt 101 having a simpler structure can be considered as shown in FIG. In this embodiment, as shown in FIG. 14, the shape of the fin-shaped protrusion 105 is different from that of the fin-shaped protrusion 5 of the first embodiment.
That is, the fin-shaped protrusion 105 is
As shown in (B), the drag generating surface 106 and the inclined surface 107.
And are similarly configured. Each of these surfaces is gradually approaching upward (in the direction of the screw part 4), and the bolt 1
01 is formed in a wedge shape that is sharp in the embedding direction. In addition, 10
Reference numeral 2 is a shaft portion (bolt body portion), 103 is a head portion, and 104 is a screw portion.

As a result, it is possible to avoid cracking of the wood due to the penetration of the fin-shaped protrusions 105 when the bolt 101 is driven, and also to drive the fin-shaped protrusions 105 into the wood itself. Has become. Further, since the drag generating surface 106 is also formed so as to be substantially along the plane along the diameter of the shaft portion 102, a large anti-rotation reaction force can be generated by the drag generating surface 106. Further, according to such a configuration, the same fin-shaped protrusion 105 can be used even in the case of the left-hand thread. In this case, the surface indicated by reference numeral 107 in FIG. 14 is a reaction force generation surface against the nut rotation torque, and the surface indicated by 106 is an inclined surface which does not contribute to the generation of the reaction force.

As a third embodiment of the special bolt for wooden construction, a special bolt 111 as shown in FIG. 15 can be considered. In this embodiment, as shown in FIG. 15, the fin-shaped protrusion 115 is partially provided on the base of the shaft 112. Although the drag generating surface 116 and the inclined surface 117 are shortened accordingly, the shaft portion 2, the head portion 3, the screw portion 4, and the chamfered portion 8 have the same configuration as that of the first embodiment (FIG. 1). To be done.

As a fourth embodiment of the special bolt for wooden construction, a special bolt 121 as shown in FIG. 16 can be considered. In this embodiment, as shown in FIG. 16, the fin-shaped protrusion 125 is formed in a slightly spiral shape. That is, the fin-shaped protrusion 125 formed on the outer periphery of the shaft portion 2 is slightly twisted from the bolt head 3 toward the screw portion 4 as can be seen from the curve showing the outer edge 125A of the fin-shaped protrusion 125. Is formed. This twisting direction is set such that the tightening torque applied to the screw portion 4 when the nut is mounted and the special bolt 121 itself advances.

As a result, when the nut is fastened to the screw portion 4, the special bolt 121 receives the tightening torque.
It goes a step further and becomes more bound to the wood. If the importance of such a twisted shape is emphasized, it is necessary to make the twist larger. However, in order to orient the fin-shaped protrusions 125 along the fibers of the wood, a slight twist should be applied as shown in the figure. Just give it.

A special bolt 131 as shown in FIG. 17 is also conceivable as a fifth embodiment of the special bolt for wooden construction. That is, in this embodiment, as shown in FIG.
A serrated tooth surface 13 is formed on a part of the outer edge 5A of the fin-shaped protrusion 5.
5 are formed. As a result, after the bolt 131 is driven in, the bolt 131 comes to bite into the wood, and is more surely coupled to the wood. Note that the tooth surface 135 may be formed over the entire outer edge 5A of the fin-shaped protrusion 5, or may be formed only in the main part as shown in FIG.

Further, in the special bolt 131, the outer surface 133A of the bolt head 133 is formed in a curved shape with the central portion protruding. This greatly improves the rigidity and strength of the bolt head 133, so that even if the bolt is driven with a hammer, the bolt head 133 will not be deformed, and hammering will be easier and stronger. It becomes possible to drive with force.

Further, as a sixth embodiment of the special bolt for wooden construction, a special bolt 141 as shown in FIG. 18 can be considered. That is, in this embodiment, as shown in FIG. 18, the inner surface of the bolt head 143 (the surface on the screw portion 4 side) 1
43B is not inclined at right angles to the axis of the bolt 141 but is appropriately inclined (for example, 45 degrees). Further, the outer surface 143A of the bolt head 143 is formed in a curved surface shape with the central portion protruding, as in the fifth embodiment.

In this way, the inner surface 14 of the bolt head 143 is
3B is properly aligned with the axis of the bolt 141 (for example, 4
The angle of 5 degrees) is used for fixing the firing beam 2 as shown in FIG. 11, and the inclination of the head inner surface 143B is the inclination of the surface of the firing beam 28 with respect to the axis of the bolt 141. By aligning with the head 14 of the bolt 141.
Without using the spacer metal piece 47 as shown in FIG.

Further, as shown in FIG.
If the counterbore 29 is formed on, the spacer metal piece 47 is used while using the special bolt 1 having the ordinary head 3 as shown in FIG. 1 instead of the deformed bolt head 133 as shown in FIG. Without this, it is possible to smoothly drive into the striking beam 28 and to fasten the nut. Needless to say, the structures of the parts in the above-described embodiments can be appropriately combined and used.

[0058]

As described in detail above, according to the special bolt for wooden construction of the present invention, if the special bolt is driven into the wood in advance, the bolt is fixed, so that the screw protruding from the wood is thereby fixed. By attaching a metal item or the like to the portion and fastening the nut, the metal item or the like can be easily fixed. In addition, since the fin-shaped projections that are projected around the shaft and are embedded in the wood together with the shaft generate counter-rotation reaction force to counteract the nut tightening torque that occurs when tightening the nut, the nut tightening is performed. Occasionally, this special bolt will not rotate, and the work of stopping the rotation of the bolt, which is required when tightening the nut, will be unnecessary. In this way, bolts and nuts can be fastened very easily, so bolts and nuts can be easily and efficiently installed in high places, and a highly durable wooden construction Has the advantage that it can be installed more easily.

According to the wooden construction hardware of the present invention,
The fin-shaped projections of the special wooden construction bolts do not interfere with the bolt insertion holes, and the special bolts can be securely inserted into the bolt insertion holes for use. The fastening work can be performed very easily, and there is an advantage that the highly durable wooden construction can be more easily constructed as described above.

[Brief description of drawings]

1A and 1B are diagrams showing a special bolt for wooden construction as a first embodiment of the present invention, in which FIG. 1A is a plan view, FIG. 1B is a view taken along arrow IB of FIG. 1A, and FIG. ) Is an IC arrow view.

FIG. 2 is a view showing a wooden construction hardware as a first embodiment of the present invention, (A) is a side view of the same when used, and (B) is a view showing the same.
Is a front view of a metal object [a view corresponding to the arrow IIB in FIG. 2 (A)]
It is.

FIG. 3 is a perspective view showing an example of use of the special bolt for wooden construction and the metal structure wooden construction for wooden construction of the present invention.

FIG. 4 is a perspective view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 5 is a perspective view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 6 is a perspective view showing an example of use of the special bolt for wooden construction and the metal construction wooden construction for wooden construction of the present invention.

FIG. 7 is a side view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 8 is a perspective view showing an example of use of the special bolt for wooden construction and the metal construction wooden construction for wooden construction of the present invention.

FIG. 9 is a perspective view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 10 is a side view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 11 is a perspective view showing an example of use of the special bolt for wooden construction and the wooden structure for wooden construction of the present invention.

FIG. 12 is a perspective view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

FIG. 13 is a side view showing an example of use of the special bolt for wooden construction and the hardware for wooden construction of the present invention.

14A and 14B are diagrams showing a special bolt for wooden construction as a second embodiment of the present invention, in which FIG. 14A is a plan view, FIG. 14B is an XIV B arrow view of FIG. 14A, and FIG. It is a XIV C arrow line view of A).

FIG. 15 is a front view showing a special bolt for wooden construction as the third embodiment of the present invention.

FIG. 16 is a view showing a special bolt for wooden construction as a fourth embodiment of the present invention, (A) is a plan view, (B) is an XVI B arrow view of (A), and (C) is ( It is a XVI C arrow line view of A).

FIG. 17 is a front view showing a special bolt for wooden construction as the fifth embodiment of the present invention.

FIG. 18 is a front view showing a special bolt for wooden construction as the sixth embodiment of the present invention.

FIG. 19 is a plan view showing a working example of wood for using the special bolt for wooden construction of the present invention.

[Explanation of symbols]

1 Embedded Bolt for Wooden Construction 2 Shaft Part (Bolt Body) 2 3 Head 4 Screw Part 5 Fin-like Projection 5A Outer Edge of Fin-like Projection 6 Drag Face 7 Slope 8 Chamfer 10 Wooden Construction Battledore bolts for hardware 11 Shaft part 12 Screw part 13 Plate part 14 Bolt insertion hole (bolt hole) 15 Notch part 21 Through column or column 21A Bolt hole 22 Beam or second floor beam 22A Bolt hole 23 Body difference 24 Horizontal material 25 Brace 26 Base 26A Seating 27 Foundation 28 Firing beam 28A Landing beam 28B Tsumaki Girder 29 Seating 30 Special nut for wooden construction 31 Nut body 32 Washer 41 Strip metal 42 Bend metal 43 Flat metal 45 Incorrect Hardware (Brace Box) 46 Hole Down Hardware (Attractive Hardware) 47 Spacer Hardware 101, 111, 121, 131, 41 Special bolt for wooden construction 102 Shaft part (bolt body part) 103, 133, 143 Head part 133A, 143A Outer surface of bolt head 143B Inner surface of bolt head 143 104 Screw part 105, 115, 125, 135 Fin-shaped projection part 135A Outer edge 106, 116, 126 of fin-shaped protrusion 135 Drag generating surface 107, 117, 127 Inclined surface 128, 117 Inclined surface J1, J2, J3, J4, J5, J6, J7, J8, J
9 connection points

Claims (2)

[Claims] 1. A special bolt used for joining or reinforcing timber in a wooden construction, wherein a shank embedded in the wood and one end of the shank is embedded in the wood. In addition to a head for hammering work and a screw portion formed at the other end of the shaft portion and protruding from the wood after the shaft portion is embedded in the wood, the shaft portion is surrounded by the screw. A special bolt for wooden construction, characterized in that it is provided with a fin-shaped protrusion that projects a rotation preventing reaction force against the nut tightening torque applied from the screw portion. 2. A metal piece used for connecting or reinforcing wood in a wooden construction, having a bolt insertion hole through which a bolt for connecting the metal piece to the wood is inserted, and the bolt is attached to the wood piece. A shaft portion to be embedded, a head for hammering work when the shaft portion is embedded in the wood, which is formed at one end of the shaft portion, and the shaft portion which is formed at the other end of the shaft portion. A fin-shaped protrusion that generates a rotation preventing reaction force against the nut tightening torque applied from the threaded portion is provided around the shaft portion with a threaded portion protruding from the wood after being embedded in the wood. And a cut portion corresponding to the cross-sectional shape of the fin-shaped projection is attached to the bolt insertion hole.