JP3517798B2 - Reinforcement metal fittings for wooden structures - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing metal fitting for a wooden structure such as a wooden house, and more particularly to a reinforcing metal fitting capable of obtaining sufficient strength in a wooden structure manufactured by a conventional method.

[0002]

2. Description of the Related Art For example, in the case of a wooden structure manufactured by a conventional construction method, the skill of a skilled craftsman is such that the construction of the wooden frame is excellent and sufficient strength can be obtained. However, recently, the number of such skilled craftsmen has decreased, and the actual condition is that the strength of the wooden construction is not sufficiently secured against a very large earthquake.

On the other hand, various methods have been proposed for reinforcing a wooden structure with strong braces. For example, a method in which a metal plate having a right-angled triangle shape as a whole is bolted to a pillar and a base or a barrel difference, and the hypotenuse metal plate has a wall brace (Japanese Patent Laid-Open No. 62-99538), and a strip shape is formed. A method of straddling a rebar between a pair of metal pieces and fixing the metal piece to the outer surface of the base and the body with bolts and nails to make the rebar streak (Japanese Patent Laid-Open No. 62-225638), wooden streak A method in which a metal plate is overlaid on the outer surface and bonded (Japanese Patent Laid-Open No. 3-262852).
No.), a method in which metal fittings are connected to both the pillar and the base or the body difference with bolts or screws, and a metal pipe whose expansion and contraction can be adjusted is bolted between the metal fittings (Japanese Utility Model Laid-Open No. 2-58506, Japanese Utility Model Laid-Open No. 2 ー 58506). No. 123502) is known.

[0004]

By the way, in the wood-based prefabricated house, the wood is processed into a standard size at the factory, and the wood is simply assembled on site, and the size is generally standardized. Is relatively easy to use, but in a traditional wooden house, the dimensions of the wooden frame change variously depending on the situation of the site and the intention of the owner, and the conventional reinforcement method using metal However, there is a problem that it is difficult to apply the conventional method.

In addition, in the conventional reinforcing method-, due to its structure, the struts may project outward from the pillar.
In the case of a wall surface on which plywood or gypsum board is stretched, there is no problem because it can be covered with a decorative plate or the like, but in the case of a true wall, there is a problem that a crease protrudes from the wall surface and it is difficult to adopt.

In view of the above problems, it is an object of the present invention to be easily applied to a wooden construction by a conventional construction method and to surely improve the strength of the wooden construction.

[0007]

As a result of intensive studies to solve the above-mentioned problems, the inventor of the present invention has found that in the case of a wooden building, it can be used as a girder, a second floor girder, a gable girder, a shed girder, an eaves girder and a through pillar or Although it is connected to the pipe pillar with work such as mortise, and is reinforced by box metal items, battledore bolts, glare, etc., we found that the connection part became a structural weak point of the wooden structure, If such a connecting portion is reinforced with a reinforcing metal fitting against both loads of compression and tension, and the reinforcing metal fitting can be applied to a true wall, sufficient strength of the wooden construction can be secured, and the reinforcing metal fitting is used. We came to pay attention to the fact that if we can fix wooden braces, we can expect further strength improvement.

Therefore, the reinforcing metal fitting for a wooden structure according to the present invention is a metal which is fixed to a crossing portion of a horizontal member or a base and a pillar in the wooden structure to reinforce the crossing portion against a compressive load and a tensile load. A reinforcing metal fitting for a wooden building, which comprises an angle and a horizontal plate, an anchor plate for fixing the angle to the outer surface of a foundation or a pillar, and the angle has a size that can be embedded in a true wall made in the wooden structure. It has an approximately L-shape, and has an L-shaped cross-sectional shape consisting of a lateral wall portion having a width that is ¼ or more of the width of the pillar and that can be embedded in the true wall, and a vertical wall portion that continues upward along the outer edge of the lateral wall portion. Then, the angle portion that is connected to the crossing portion between the horizontal member or the base and the pillar with a bolt or a screw, the first reinforcing plate portion that connects between the horizontal wall portions near the L-shaped crossing portion of the angle portion, and the angle portion Connecting the lateral wall parts near both tips of the second Strength and the plate portion, of the angle portion L
The anchor plate is fixed between the vertical wall portions in the vicinity of the letter-shaped crossing portion and has a locking plate portion having a locking groove on which the hook of the anchor plate is hooked, while the anchor plate is hooked on the leading end in the locking groove. A hook portion is formed, and an insertion hole for bolting or screwing is formed on the outer surface of the horizontal member, the base or the pillar at the rear end portion.

In general, a horizontal member in a wooden structure means a body difference, but in the present invention, other than the body difference, girders, 2
Includes all members that extend horizontally and are erected on columns, such as floor beams, shed beams, eaves girders, purlins, purlins, etc. The pillar means a member extending in the vertical direction, such as both a through pillar and a tube pillar, and a ridge bundle. The material of the angle portion, the first reinforcing plate, the second reinforcing plate, the locking plate, and the anchor plate is not particularly limited as long as it is a metal material, but a steel plate is preferable in view of availability of the material and strength.

Since the thickness of the lateral wall portion and the vertical wall portion of the angle portion is closely related to the weight of the reinforcing metal fitting, for example, in the case of a steel plate, it is not heavy to handle and sufficient strength can be obtained. 0 mm is preferable. The lateral wall portion of the angle portion has a width that can be embedded in the true wall so that it can be applied to the true wall, but if it is too small, desired strength cannot be secured. Therefore, the width is set to 1/4 or more of the width of the pillar, but in the case of a true wall, the thickness is about 1/3 or more of the pillar, so about 1/3 is optimal.

The length of one side of the L-shaped portion of the angle portion should be such that it can be applied to the gap between the body and the eaves girder and the lintel or window sill, but if it becomes too short, compression and tension will occur. 25 cm because reinforcement performance against both loads cannot be ensured
-40 cm is suitable.

Since the first and second reinforcing plates have a function of reinforcing the angle portion and an important function of fixing wooden braces, which will be described later, for example, in the case of a steel plate, they are 5 mm to 6 mm.
The degree is good. Since the anchor plate is bolted or screwed to the outer surface of the base, the horizontal member, and the pillar, it is preferable that the anchor plate has a thickness sufficient to ensure sufficient strength, for example, about 3.5 mm to 4 mm. The screw connection means a connection by a screw or a screw nail, but of course includes a connection by a nail driven by striking. Although the first and second reinforcing plates may be integrated,
Since the reinforcing metal fitting becomes heavy, an appropriate width, for example, 5
It is preferable that the plates are cm to 6 cm, and the plates are fixed at intervals.

The angle is preferably fixed to the outer surface of the base, the horizontal member or the pillar by an anchor plate so that the angle does not come off from the intersection of the base, the horizontal member and the pillar with a very large load. The anchor plate is not always necessary because the strength can sufficiently reinforce the intersection between the column and the horizontal member or the base. That is, according to the present invention, a reinforcing member for a wooden structure, which is fixed to a crossing member of a horizontal member or a base and a pillar in a wooden structure and reinforces the crossing member against a compressive load and a tensile load, It has an approximately L-shape that is large enough to be embedded in the true wall of a wooden structure, and is upward along the lateral wall and the outer edge of the horizontal wall that is 1/4 or more of the width of the pillar and that can be embedded in the true wall. Has an L-shaped cross-sectional shape consisting of a vertical wall portion that is continuous with, and an angle portion that is joined to the intersection of the horizontal bridge or the base and the pillar with a bolt or screw, and the vicinity of the L-shaped intersection of the angle portion. It is possible to provide a reinforcing metal fitting for a wooden building, which includes a first reinforcing plate portion that connects between the lateral wall portions and a second reinforcing plate portion that connects between the lateral wall portions in the vicinity of both ends of the angle portion.

If the first and second reinforcing plates are provided with through holes for bolts, wooden braces can be fixed to the reinforcing metal fitting. That is, according to the present invention, the first reinforcing plate and the second reinforcing plate have at least one bolt insertion hole, and the end portion of the wooden braces and the inner portion in the longitudinal direction thereof can be respectively bolted to the wooden construction. It is possible to provide a metal reinforcement for an object. Since the true wall is 1/3 or more of the width of the pillar, the wooden braces should have a width or thickness of about 1/3 of the pillar.

If a bolt insertion hole, especially two or more bolt insertion holes, is made at the end of the wooden brace, there is a concern that the end may crack. Therefore, it is preferable to further include a metal fitting for reinforcing the end portion of the wooden brace. That is, according to the present invention, a U-shape is formed,
It is possible to provide a reinforcing metal fitting for a wooden building provided with a metal crack prevention metal fitting that is externally fitted to the end of the wooden brace.

In the case of the wooden construction by the conventional construction method, the dimensions of the wooden frame are various, and it is necessary to process and fix the braces according to the situation of the site. Therefore, at least two slotted holes for inserting bolts extending parallel to each other and extending in the longitudinal direction of the wooden braces are formed in the crack preventing metal fitting, and a predetermined interval is provided in the longitudinal direction on the second reinforcing plate. By forming a plurality of bolt insertion holes, it is possible to adjust the fixing angle of the wooden braces and make the braces according to the situation. Since it is a wooden brace, the end can be easily cut according to the fixed angle.

[0017]

According to the present invention, the angle portion is formed by continuously connecting the L-shaped section having a width capable of ensuring strength to a substantially L-shaped shape, and the lateral wall portion thereof is divided into the first and second portions. Since it is connected by a reinforcing plate, the angle part has a strong structure. Therefore, if the angle part is connected to the crossing part between the horizontal material or the base and the column with bolts or screws, the connecting part of the horizontal material or the base and the column that is connected by a work such as mortise is compressed or pulled. It can surely reinforce the load.
Moreover, when the angle portion is fixed to the outer surface of the cross member, the base or the column with the anchor plate, the angle portion does not come off from the intersection portion even if a large compressive load or tensile load is applied, and the reinforcing performance can be guaranteed.

Further, since the angle portion has a width that can be buried in the true wall, it does not project outside the wall surface even if it is used as a cross member for forming the true wall or at the intersection of the base and the pillar, and the appearance is impaired. There is no.

Further, by fixing the braces using the reinforcing metal fittings, even a very large compression load or tensile load can be reliably guaranteed in combination with the reinforcement by the reinforcing metal fittings, and the earthquake resistance of the wooden house can be greatly improved. .

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the specific examples shown in the drawings. FIG. 1 shows a reinforcing member for a wooden structure according to an embodiment of the present invention. In the figure, a reinforcing metal fitting 10 is an angle 20, an anchor plate 30, and a crack preventing metal fitting 4.
0 is a combination, and angle 10 is angle part 2
It is composed of first, first and second reinforcing plates 22 and 23 and a locking plate 24.

The angle portion 21 is 4.0 mm to 4.5 mm
It is manufactured by using a steel plate of No. 1 and having a substantially L-shaped cross section. One side of the substantially L-shape of the angle portion 21 is 30 cm to 40 c so that it can be embedded in the true wall.
The width of the horizontal wall with an L-shaped cross section is set to be 1/4 or more of the width of the column and can be embedded in the true wall made in the wooden structure, for example, the width of approximately 1/3 of the width of the through column. Is set to. A bolt insertion hole 210 or a screw hole is formed in the vertical wall portion of the angle portion 21. Whether it is a bolt insertion hole or a screw hole is set depending on whether bolts can be fastened,
It is preferable to have a hole size so that both bolts and screws (including screw nails and nails) can be commonly used so that they can be selected depending on the situation of use. The angle portion 21 may be manufactured by bending the L channel into an L shape, or may be manufactured by welding straight L channels by butting at right angles.

The first reinforcing plate 22 is 5 mm to 6 mm.
Manufactured in a substantially trapezoidal shape using the steel plate of No. 2, and placed on the lateral wall portion near the L-shaped intersection of the angle portion 21 and welded,
The horizontal wall portions near the L-shaped crossing portion of the angle portion 21 are connected. The first reinforcing plate 22 is provided with two bolt insertion holes 220, 220 at a portion that does not overlap the lateral wall portion of the central angle portion 21.

The second reinforcing plate 23 is also 5 mm-
It is manufactured in a substantially trapezoidal shape using a 6 mm steel plate, is placed on the lateral wall portions near the L-shaped tip portions of the angle portion 21 and is welded, and between the lateral wall portions near the L-shaped tip portions of the angle portion 21. Are connected. The second reinforcing plate 23 is provided with three bolt insertion holes 230 at predetermined intervals in the longitudinal direction,
230, 230 are provided so that the fixing angle of the wooden braces 50 can be adjusted when the wooden braces 50 are fixed to the angle portion 21.

The locking plate 24 has an appropriate thickness, for example 4
A steel plate of mm is used and is welded between the vertical wall portions near the L-shaped crossing portion of the angle portion 21, and a locking groove 240 is formed in the locking plate 24 so as to extend in the longitudinal direction thereof. In addition,
In the embodiment, the locking plate 24 is the first reinforcing plate 22.
Although it is a separate body, it may be manufactured integrally using L-shaped steel.

The anchor plate 30 is manufactured by using a strip-shaped steel plate having a predetermined thickness, for example, 4 mm, and a hook portion 300 which can be hooked in the locking groove 240 is formed by bending at a front end thereof, and a rear end portion thereof is formed. A bolt insertion hole 301 is formed in the hole, and a nail hole 302 is formed in the front thereof.

The crack prevention metal fitting 40 is manufactured by bending a U-shaped steel plate of 3 mm, for example, so that it can be fitted onto the end of the wooden brace 50, and the upper surface of the crack prevention metal fitting 40 is parallel to each other and made of wood. Two long holes 400, 400 for inserting bolts extending in the longitudinal direction of the brace 50 are bored so that the bolts can be fastened even if the fixing angle of the wooden brace 50 changes.

When reinforcement is performed using the reinforcing metal fitting 10 of this example, as shown in FIG. 2, the through column 60 and the base 61, the through column 60 and the barrel difference 62, the tube column 64 and the base 61, and the tube column 64 are the barrel differences. 62, the through column 60 is fitted with the angle 20 at each intersection of the eaves girder 63, the pipe column 64 and the eaves girder 63, and the through column 60 is bolted or screwed by using the through hole 210 of the vertical wall portion of the angle part 21. Base 61, body difference 62, tube column 64, eaves girder 63
Fixed to. In the case of bolt connection, a through hole for inserting a bolt is previously formed in the through column 60 or the like.

Angles 20 are provided at the points A and B where the true wall W is formed.
Put the wooden braces 50 using the crack prevention metal fittings 40.
The wooden braces 50 are cut at both ends obliquely according to the fixed angle so that both ends fit into the intersections of the angle parts 21, holes are formed for inserting bolts, and the crack prevention metal fittings 4 are provided at both ends.
A wooden brace 50 having 0 fitted therein is fitted between the fixed angles 20 and fixed with bolts 70 and nuts 71.

If necessary, a fixed angle 2
The hook portion 300 of the Acker plate 30 is hooked in the locking groove 240 of the locking plate portion 24 of No. 0, and fixed to the outer surface of the base 61 or the body difference 62 with the bolt 72 and the nut 73 (or screw nail). Through column 60, tube column 6 depending on the fixed condition
4, the eaves girder 63 may be used.

In addition, at the portion C where the window is to be formed, the angle 20 is fixed to the intersections above the lintel 65 and below the window stand 66,
Angle 20 is also provided at the intersection above the point D where the sliding door comes.
To fix. It is also possible to fix the angle 20 of the portion C where the window is formed, the angles 20 of the portions A and B where the true wall W is formed, and the angle 20 of the portion D where the sliding door or the like comes with a single bolt and nut.

When forming the true wall W, the angle 20 can be embedded in the true wall W as shown in FIG. 3 by fixing it to the center of the through column 60 or the tube column 64 in the approximate direction. On the other hand, if there is another structure (may be a true wall) W1 in the approximate center of the through column 60 or the tube column 64, avoid that structure W1 and leave a gap between the decorative plate 67 and the structure W1 as shown in FIG. Can be fixed to.

When there is no brace 50, the true wall W is inserted in one of the insertion holes 210 of the anchor portion 21, for example, the inner insertion hole 211.
It is better to insert the base bamboo of.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a reinforcing member for a wooden structure according to an embodiment of the present invention.

FIG. 2 is a front view showing a wooden frame using the reinforcing metal fitting.

FIG. 3 is a cross-sectional plan view showing an example of fixing the reinforcing metal member.

FIG. 4 is a cross-sectional plan view showing another example of fixing the reinforcing metal member.

[Explanation of symbols]

10 Reinforcing Metal Fitting 20 Angle 21 Angle Part 22 First Reinforcing Metal Fitting 220 Bolt Inserting Hole 23 Second Reinforcing Metal Fitting 230 Bolt Inserting Hole 24 Locking Plate 30 Anchor Plate 300 Hook Part 301 Bolt Inserting Hole 40 Split Preventing Metal Fitting 400 Long Hole 50 Wooden brace 60 Through column 61 Base 62 Body difference 63 Eaves girder 64 Pipe column W True wall

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/58 505 E04B 1 / 18,1 / 26,1 / 40

Claims (5)

(57) [Claims] 1. A metal angle 20 and an angle, which are fixed to a crossing portion of a horizontal member 62, 63 or a base 61 and a pillar 60, 64 in a wooden structure to reinforce the crossing portion against a compressive load and a tensile load. 20 horizontal material 62, 63, base 61
Alternatively, the anchor plate 3 fixed to the outer surface of the pillar 60, 64
The angle 20 is a reinforcing metal fitting for a wooden structure consisting of 0, and has an approximately L-shape that is large enough to be embedded in the true wall W formed in the wooden structure, and has a width of 1/60 of the columns 60, 64. Four
It has an L-shaped cross-sectional shape consisting of a horizontal wall portion having a width that can be embedded in the true wall W and a vertical wall portion that extends upward along the outer edge of the horizontal wall portion, and has horizontal members 62, 63 or a base 61 and a pillar. 6
Both the angle portion 21, which is connected to the intersection portion with 0 and 64 with a bolt or a screw, the first reinforcing plate portion 22 which connects between the lateral wall portions near the L-shaped intersection portion of the angle portion 21, and the angle portion 21. The hook 3 of the anchor plate 30 is fixed between the second reinforcing plate portion 23 connecting between the lateral wall portions near the tip portion and the vertical wall portion near the L-shaped intersection of the angle portion 21.
00 is engaged with the engaging plate portion 24 having an engaging groove 240, while the anchor plate 30
Is a hook portion 30 that is hooked in the locking groove 240 at the tip.
0 is formed, and a through hole 301 for bolting or screwing is formed on the outer surface of the horizontal members 62, 63, the base 61 or the columns 60, 64 at the rear end portion. Reinforcing metal fittings. 2. A reinforcing member for a wooden structure, which is fixed to an intersection of a horizontal member 62, 63 or a base 61 and a pillar 60, 64 in a wooden structure to reinforce the intersection against a compressive load and a tensile load. In addition, the pillars 60, 64 have a substantially L-shape that is large enough to be buried in the true wall W of a wooden structure.
Has a L-shaped cross-sectional shape consisting of a lateral wall portion having a width that is ¼ or more of the width of the horizontal wall portion and that can be embedded in the true wall W, and a vertical wall portion that continues upward along the outer edge of the lateral wall portion. 63 or the first reinforcing plate portion 22 that connects the angle portion 21 connected to the intersection of the base 61 and the pillars 60, 64 with a bolt or a screw and the lateral wall portion near the L-shaped intersection of the angle portion 21.
When, and a second reinforcing plate 23 which connects between the lateral wall portions of both the vicinity of the distal end portion of the angle portion 21, the first reinforcing plate 2
2 and the second reinforcing plate 23 are at least one bolt
It has the insertion holes 220 and 230, and the end of the wooden braces 50 and
Bolts can be attached to the inner parts in the longitudinal direction.
Made of metal that is U-shaped and fits over the end of the wooden braces
A reinforcing metal fitting for a wooden structure, which is further provided with a crack preventing metal fitting 40 . 3. A first reinforcing plate 22 and a second reinforcing plate.
At least one bolt insertion hole 220 , 23
2. The reinforcing metal fitting for a wooden construction according to claim 1 , wherein the reinforcing member has 0, and the ends of the wooden braces 50 and the inner portions in the longitudinal direction thereof can be bolted. 4. None of the U-shaped, according to claim 2 or 3 with a metal cracking prevention fitting 40 which is fitted onto the end of the wooden muscle differences
Reinforcing metal fittings for the listed wooden structures. 5. The crack preventing metal fitting 40 has at least two elongated holes 400 for inserting bolts extending parallel to each other and in the longitudinal direction of the wooden braces 50, and the second reinforcing plate 23 has its longitudinal direction. The reinforcing metal fitting for a wooden structure according to claim 4, wherein a plurality of bolt insertion holes 230 are provided at predetermined intervals, and the fixing angle of the wooden brace 50 can be adjusted.