JP2020193456A - Reinforcing metal fitting - Google Patents

Abstract

To provide a reinforcing metal fitting capable of tenaciously exhibiting bearing force even when repeated earthquakes occur by relieving stress concentration near a fixed part fixed to a brace and suppressing splitting of the brace and slipping-out of a fixing member.SOLUTION: A reinforcing metal fitting comprises a column member fixing part 1, a horizontal member fixing part 2, and a brace fixing part 3, wherein the column member fixing part 1 and the brace fixing part 3 are connected via a column member side deformation part 4 which is deformed when a tensile force in an axial direction is applied to a brace 32; the column member side deformation part 4 comprises a first bent surface part 4a protruded from the column member fixing part 1 in a bent state, a second bent surface part 4b protruded in a bent state from the brace fixing part 3 and connected to the first bent surface part 4a, and a vertical ridge part 4c formed at the connection part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a reinforcing metal fitting for reinforcing a brace in a wooden frame structure.

Conventionally, in buildings using the wooden frame construction method, it is obligatory to insert braces between columns at a constant ratio for the purpose of improving earthquake resistance.

Generally, this brace is joined and fixed near the joint between the pillar material and the horizontal member such as the beam or the base using nails or braces, but fixing only with these nails or braces causes a large shake. If it does occur, the brace may come off.

Therefore, conventionally, in order to prevent such a brace from coming off, a reinforcing metal fitting (also referred to as a brace metal fitting or a brace hardware) is used to reinforce the brace.

As a reinforcing metal fitting for reinforcing the brace, for example, there is one as shown in Patent Document 1.

The brace fixing bracket (hereinafter referred to as a conventional example) shown in Patent Document 1 has a brace contact portion that is abutted and fixed to one surface of the brace and a vertical that is abutted and fixed to one surface of a vertical material. The material contact fixing part and the horizontal material contact fixing part to be abutted and fixed to one surface of the horizontal material are bent and formed by one metal plate so as to be perpendicular to each other, and the respective abutment fixing parts are formed. A plurality of mounting holes are provided in the portion, and each abutting fixing portion is abutted and fixed to a pillar material to be fixed with a fixing member such as a nail or a screw through the mounting holes, thereby bracing. Is configured so that it can be firmly fixed to the joint portion of the vertical material and the horizontal material.

Japanese Unexamined Patent Publication No. 11-107368

However, when the brace is reinforced by using a reinforcing metal fitting having a structure as in the conventional example, the proof stress of the brace is excessively increased. For example, when a large axial tensile force acts on the brace, the stress of this tensile force is applied. Is concentrated near the fixing (joining) part of the reinforcing metal fittings that are fixed to the brace, causing splits in the brace, or the fixing members (nails, screws, etc.) that fix the reinforcing metal fittings to the brace come out. Since the reinforcing action due to the brace is significantly reduced, it may not be possible to maintain sufficient proof stress when a situation in which a large stress repeatedly acts.

The present invention has been made in view of such a current situation, and even if an axial tensile force acts on the brace, the stress is concentrated near the fixing (joining) portion of the reinforcing metal fitting fixed to the brace. Providing epoch-making reinforcing metal fittings that can alleviate, suppress the splitting of braces and pull out of fixing members, maintain the reinforcing action of braces, and maintain sufficient seismic resistance even when repeated earthquakes occur. The purpose is.

The gist of the present invention will be described with reference to the accompanying drawings.

Reinforcing metal fittings for fixing the column member 30 and the horizontal member 31 and the brace 32 between them in the wooden frame structure, to the column member fixing portion 1 fixed to the column member 30 and the horizontal member 31. A horizontal member fixing portion 2 to be fixed and a brace fixing portion 3 fixed to the brace 32 are provided, and the column member fixing portion 1 and the brace fixing portion 3 have an axial tensile force on the brace 32. The pillar material side deformed portion 4 is continuously provided via the pillar material side deformed portion 4 that deforms when the sword acts, and the pillar material side deformed portion 4 is connected to the pillar material fixing portion 1 with the pillar material 30 of the pillar material fixing portion 1. The first folded curved surface portion 4a projecting in a bent state toward the side opposite to the joint surface side of the brace, and the brace fixing portion 3 on the side opposite to the joint surface side of the brace fixing portion 3 with the brace 32. It is formed in a second folded curved surface portion 4b that is projected in a bent state and is connected to the first folded curved surface portion 4a, and a continuous portion between the first folded curved surface portion 4a and the second folded curved surface portion 4b. The present invention relates to a reinforcing metal fitting including a vertical ridge line portion 4c to be formed.

Further, the pillar material fixing portion 1, the horizontal member fixing portion 2, the brace fixing portion 3 and the pillar material side deformed portion 4 are molded from one metal plate material, and the pillar material fixing portion 1, The brace fixing portion 2 provided between the horizontal member fixing portion 2 and the pillar material fixing portion 1 and the horizontal member fixing portion 2 is formed in a flat plate shape, respectively, and the pillar material side deformed portion 4 is formed. The first aspect of the present invention, wherein the one side edge is connected to the column member fixing portion 1 and the other side edge is connected to the brace fixing portion 3. It is related to reinforcing metal fittings.

Further, the first folded curved surface portion 4a is formed with a bent protrusion on one side edge portion of the pillar material fixing portion 1, and the second folded curved surface portion 4b is a one side edge portion of the brace fixing portion 3. The bent protrusion is formed in the above direction, and the bent corner portion of the connecting portion between the first folded curved surface portion 4a and the second folded curved surface portion 4b is formed as the vertical ridge line portion 4c. It relates to the reinforcing metal fitting according to any one of claims 1 and 2.

The claim 4 is characterized in that the column member side deformed portion 4 is bent into an L-shape, a dogleg shape, or a V shape, and has a single vertical ridge line portion 4c extending in the vertical direction. It relates to the reinforcing metal fittings described in Item 3.

Further, the pillar material side deformed portion 4 is bent into an L-shape, a dogleg shape, or a V shape, and the first folded curved surface portion 4a is a right-angled base having a lower edge longer than the upper edge. The second folded curved surface portion 4b, which is formed in a shape and is continuously provided to the first folded curved surface portion 4a, is formed on a front-down inclined surface along the inclined side portion of the first folded curved surface portion 4a, and is formed in the vertical direction. The present invention relates to the reinforcing metal fitting according to claim 3, wherein the ridge line portion 4c is inclined forward and downward.

Further, according to any one of claims 1 to 5, the pillar material side deformed portion 4 is provided with a notch portion 6 in either one or both of the upper edge portion and the lower edge portion. It relates to the described reinforcing metal fittings.

Further, a dividing line is formed between the column material fixing portion side where the column material fixing portion 1 is provided and the horizontal member fixing portion side where the horizontal member fixing portion 2 is provided passing through the brace fixing portion 3. The reinforcing metal fitting according to any one of claims 1 to 6, wherein the reinforcing metal fitting is formed line-symmetrically with reference to the reference.

Further, the horizontal member fixing portion 2 and the brace fixing portion 3 are continuously provided via a horizontal member side deforming portion 5 that deforms when an axial tensile force acts on the brace 32. The horizontal member side deformed portion 5 is projected from the horizontal member fixing portion 2 in a bent state toward the side opposite to the joint surface side of the horizontal member fixing portion 2 with the horizontal member 31. The third folded curved surface portion 5a and the brace fixing portion 3 are projected in a bent state toward the side opposite to the joint surface side of the brace fixing portion 3 with the brace 32, and are connected to the third folded curved surface portion 5a. Claim 1 is characterized by comprising a fourth folded curved surface portion 5b to be provided, and a lateral ridge line portion 5c formed in a continuous portion of the third folded curved surface portion 5a and the fourth folded curved surface portion 5b. The present invention relates to the reinforcing metal fitting according to any one of the items to 7.

Further, the horizontal member fixing portion 2 and the brace fixing portion 3 are continuously provided via a horizontal member side deforming portion 5 that deforms when an axial tensile force acts on the brace 32. The horizontal member side deformed portion 5 is projected from the horizontal member fixing portion 2 in a bent state toward the side opposite to the joint surface side of the horizontal member fixing portion 2 with the horizontal member 31. The third folded curved surface portion 5a and the brace fixing portion 3 are projected in a bent state toward the joint surface side of the brace fixing portion 3 with the streak 32, and are continuously provided with the third folded curved surface portion 5a. Claims 1 to 6 include a fourth folded curved surface portion 5b and a lateral ridge line portion 5c formed in a continuous portion of the third folded curved surface portion 5a and the fourth folded curved surface portion 5b. It relates to the reinforcing metal fitting described in any one item.

Since the present invention is configured as described above, even if an axial tensile force acts on the brace, it follows the movement of the brace and stresses near the fixed (joint) portion of the reinforcing metal fitting fixed to the brace. Reinforcement that can alleviate the concentration of braces, suppress the splitting of braces and prevent the fixing members from coming off, and maintain sufficient seismic resistance even when repeated earthquakes occur while maintaining the reinforcing action of braces. It becomes a metal fitting.

It is a perspective view which shows the use state of Example 1. FIG. It is a perspective view which shows Example 1. FIG. It is a plan view, a front view, and a right side view which show Example 1. FIG. It is a perspective view which shows Example 2. FIG. It is a perspective view which shows Example 3. FIG. It is a perspective view of a different angle from FIG. 5 which shows Example 3. FIG. It is a perspective view which shows Example 4. FIG. It is explanatory perspective view which shows Example 5. It is a perspective view of a different angle from FIG. 8 which shows Example 5. FIG.

An embodiment of the present invention that is considered to be suitable will be briefly described by showing the operation of the present invention based on the drawings.

The present invention includes a column material fixing portion 1, a horizontal member fixing portion 2, and a brace fixing portion 3, and these are three-point stoppers that are joined and fixed to the column material 30, the horizontal member 31, and the brace 32, respectively. Therefore, the brace 32 is fixed to each of the column member 30 and the horizontal member 31, and the brace 32 is reinforced more firmly than in the case of the two-point stop with the column member 30 or the horizontal member 31. , Excessive deformation of the bearing wall in the outward direction can be suppressed.

Further, in the present invention, a vertical ridge line portion 4c is formed in the pillar material side deformed portion 4 in which the pillar material fixing portion 1 and the streak fixing portion 3 are continuously provided, and an axial tensile force acts on the streak 32. At that time, since two different types of deformation, bending deformation and shear deformation, are generated in the pillar material side deformation portion 4, the movement of the streak 32 is followed by the bending deformation, and the in-plane around the streak fixing portion 3 is formed. By relaxing the tension and avoiding excessive stress concentration around the fixing member 20 such as screws and nails, it is possible to suppress the splitting of the wood, and by causing not only bending deformation but also shear deformation, the reinforcing metal fittings, That is, the initial rigidity required for the metal fittings is also secured.

Moreover, in the present invention, when the pillar material fixing portion 1, the horizontal member fixing portion 2 and the brace fixing portion 3 are joined and fixed at predetermined positions of the pillar material 30, the horizontal member 31 and the brace 32, respectively, the deformed portion on the pillar material side. Since the vertical ridge line portion 4c formed by the first folded curved surface portion 4a and the second folded curved surface portion 4b of 4 is located on a non-identical surface with the joint surface with the brace 32 of the brace fixing portion 3, the axis is aligned with the brace 32. When the tensile force in the direction acts, the deformed portion 4 on the column material side deforms out of the plane, so that the concentration of stress on the brace fixing portion 3 with the brace 32 is further relaxed, and the concentration of stress in the vicinity of the brace 32 is further relaxed. The splitting of the brace 32 and the withdrawal of the fixing member 20 for fixing the brace fixing portion 3 to the brace 32 are more reliably suppressed, and while maintaining the reinforcing action of the brace, sufficient earthquake resistance even when repeated earthquakes act. It will be an epoch-making reinforcing metal fitting that can maintain the property.

Specific Example 1 of the present invention will be described with reference to FIGS.

This embodiment is a brace reinforcement metal fitting (also referred to as a brace metal fitting or a brace metal fitting) used for reinforcing the brace 32 in a wooden frame structure, and as shown in FIG. 1, a pillar fixed to a column member 30. A member fixing portion 1, a horizontal member fixing portion 2 fixed to the horizontal member 31, and a brace fixing portion 3 fixed to the brace 32 are provided, and these are provided as a pillar member 30, a horizontal member 31, and a brace, respectively. It is configured as a three-point stop type that is fixed to 32.

Specifically, as shown in FIG. 2, the pillar material fixing portion 1, the horizontal member fixing portion 2, and the brace fixing portion 3 are each formed in a flat plate shape, and in this embodiment, one sheet is formed. The structure is such that the metal plate is bent to form these integrally.

More specifically, as shown in FIG. 3, the brace fixing portion 3 is a band inclined downward to the right in the front view in which a plurality of through holes 7 for inserting fixing members 20 such as screws and nails are formed at predetermined positions. In addition to being formed in a plate shape, the end edge on the side where the column member fixing portion 1 is continuously provided is formed as a straight vertical edge along the longitudinal direction of the column member 30, and the horizontal member fixing portion 2 is continuously provided. The side edge is formed as a straight horizontal edge along the longitudinal direction of the cross member 31. It should be noted that FIGS.

Further, the pillar material fixing portion 1 and the horizontal member fixing portion 2 are each formed in a square flat plate shape in which a plurality of through holes 7 for inserting the fixing members 20 such as screws and nails are formed at predetermined positions. The material fixing portion 1 is continuously provided on the vertical edge side of the brace fixing portion 3 so that the plate surface is substantially orthogonal to the plate surface of the brace fixing portion 3, and the horizontal member fixing portion 2 has a plate surface. It is continuously provided on the horizontal edge side of the brace fixing portion 3 so as to be substantially orthogonal to the plate surface of the brace fixing portion 3.

More specifically, in this embodiment, the column member fixing portion 1 and the horizontal member fixing portion 2 are formed in the same shape, and the brace fixing portion 3 passes through the center in the longitudinal direction at a substantially 45 ° axis L ( The column material fixing part side and the horizontal member fixing part side are formed in a line-symmetrical shape with the dividing line) as a boundary, and the brace 32 provided in the front view upward right inclination state and the front view right downward inclination state. It is configured so that it can be used without distinction between the provided brace 32 and the brace 32 in any inclined state.

Further, in this embodiment, as shown in the figure, the column member fixing portion 1 and the brace fixing portion 3 are deformed when an axial tensile force acts on the brace 32 due to, for example, an earthquake. The horizontal member fixing portion 2 and the brace fixing portion 3 are integrally connected to the brace 32 via the horizontal member side deforming portion 5, which is similarly deformed when an axial tensile force is applied to the brace 32. It is integrally connected.

The column material side deformed portion 4 that connects the column material fixing portion 1 and the streak fixing portion 3 faces the column material fixing portion 1 toward the side opposite to the joint surface side with the column material 30 of the column material fixing portion 1. The first folded curved surface portion 4a projecting in a bent state and the streak fixing portion 3 projecting in a bent state toward the side opposite to the joint surface side of the streak fixing portion 3 with the streak 32. A configuration consisting of a second folded curved surface portion 4b connected to the folded curved surface portion 4a and a vertical ridge line portion 4c formed in the connected portion of the first folded curved surface portion 4a and the second folded curved surface portion 4b. Has been done.

Specifically, in the pillar material side deformed portion 4, the first folded curved surface portion 4a formed in the shape of a square flat plate is formed by bending and projecting substantially at a right angle from one side edge portion of the pillar material fixing portion 1, and has a square flat plate shape. The second folded curved surface portion 4b formed in the above is formed so as to bend and project at a substantially right angle from one side edge portion of the crossing fixing portion 3, and the first folded curved surface portion 4a and the second folded curved surface portion 4b are approximately 90 °. It is formed in an L-shaped bent plate shape in a plan view (viewed from above) as shown in FIG. 3 which is connected at an angle, and the first folded curved surface portion 4a and the second folded curved surface portion 4b The bent angle portion formed between the above and extending in the vertical direction is formed as the vertical ridge line portion 4c.

That is, in other words, the column member side deformation portion 4 of the present embodiment is formed by folding a single rectangular metal plate material in half so that the bending angle is approximately 90 °, and is formed in an L-shaped plan view. It is a curved plate-like body, and one surface folded in half is designated as a first folded curved surface portion 4a, the other surface is designated as a second folded curved surface portion 4b, and the bent portion formed by this folding is designated as a vertical ridge line portion 4c. It is composed. The column member side deformed portion 4 has an L-shaped bent plate shape in a plan view as described above, and for example, the first folded curved surface portion 4a and the second folded curved surface portion 4b form an obtuse angle or an acute angle. It may be formed in a rectangular shape in a plan view that is continuously provided, or in a curved plate shape in a plan view in which the width dimensions of the first folded curved surface portion 4a and the second folded curved surface portion 4b are different.

Further, the horizontal member side deformed portion 5 in which the horizontal member fixing portion 2 and the brace fixing portion 3 are continuously provided is a joint surface between the horizontal member fixing portion 2 and the horizontal member 31 of the horizontal member fixing portion 2. The third folded curved surface portion 5a projecting in a bent state toward the side opposite to the side, and the brace fixing portion 3 in a bent state toward the side opposite to the joint surface side with the brace 32 of the brace fixing portion 3. A lateral ridge line portion formed in a fourth folded curved surface portion 5b that is projected from the center and connected to the third folded curved surface portion 5a, and a continuous portion between the third folded curved surface portion 5a and the fourth folded curved surface portion 5b. It is configured to consist of 5c.

Specifically, in the horizontal member side deformed portion 5, the third folded curved surface portion 5a formed in a square flat plate shape is formed so as to be bent and projected substantially at a right angle from one side edge portion of the horizontal member fixing portion 2, and is square. The fourth folded curved surface portion 5b formed in a flat plate shape is bent at a substantially right angle from one side edge portion of the streak fixing portion 3, and is bent in an L shape in a plan view having the same shape as the pillar material side deformed portion 4 formed. It is formed in a plate shape, and the third folded curved surface portion 5a and the fourth folded curved surface portion 5b are formed in a row at an angle of approximately 90 ° to form an L-shaped bent plate in a plan view. The bent angle portion extending in the vertical direction formed between the three-fold curved surface portion 5a and the fourth-folded curved surface portion 5b is formed as the lateral ridge line portion 5c.

In other words, the horizontal member side deformed portion 5 of the present embodiment is formed by folding one rectangular metal plate material in half so that the bending angle is approximately 90 °, and is formed in an L-shaped plan view. It is a plate-like body, and one surface folded in half is a third folded curved surface portion 5a, the other surface is a fourth folded curved surface portion 5b, and the bent portion formed by the two folding is a lateral ridge line portion 5c. It is said that. The deformed portion 5 on the horizontal member side has an L-shaped bent plate in a plan view as described above, and for example, the third folded curved surface portion 5a and the fourth folded curved surface portion 5b have an obtuse angle or an acute angle. It may be formed in a rectangular shape in a plan view, or in a curved plate shape in a plan view in which the width dimensions of the third folded curved surface portion 5a and the fourth folded curved surface portion 5b are different.

That is, in this embodiment, the first folded curved surface portion 4a and the second folded curved surface portion 4b forming the pillar material side deformed portion 4 in which the pillar material fixing portion 1 and the brace fixing portion 3 are continuously provided, and the first thereof. A vertical ridge line portion 4c formed by the folded curved surface portion 4a and the second folded curved surface portion 4b, and a horizontal member side deformed portion 5 in which the horizontal member fixing portion 2 and the brace fixing portion 3 are continuously provided are formed. The third folded curved surface portion 5a and the fourth folded curved surface portion 5b, and the lateral ridge line portion 5c formed by the third folded curved surface portion 5a and the fourth folded curved surface portion 5b are the pillar material fixing portions 1, respectively. As a configuration in which the horizontal member fixing portion 2 and the brace fixing portion 3 are arranged outside the plane, the column member side deformation occurs when an axial tensile force acts on the brace 32 in the mounting state as shown in FIG. The first folded curved surface portion 4a, the second folded curved surface portion 4b and the vertical ridge line portion 4c of the portion 4, and the third folded curved surface portion 5a, the fourth folded curved surface portion 5b and the lateral ridge line portion of the horizontal member side deformation portion 5. Each of the 5c deforms out of the plane to follow the movement of the brace 32, relax the in-plane tension acting on the brace fixing portion 3, suppress an excessive increase in bearing capacity, and with the brace fixing portion 3. It is configured to alleviate the concentration of stress on the fixed portion and suppress the occurrence of splitting of the brace 32 due to this stress concentration and the occurrence of the fixing member 20 fixing the brace fixing portion 3 to the brace 32.

Further, in this embodiment, the notch portion 6 is provided in either or both of the upper edge portion and the lower edge portion of the column member side deformed portion 4 and the vertical ridge line portion 5, respectively, and the notch portion 6 is provided. 6 is configured so that the column member side deformed portion 4 and the vertical ridgeline portion 5 exert an even higher tension relaxing action and suppress a remarkable increase in proof stress at the end of the event.

Specifically, in this embodiment, notches 6 are provided at the upper edge portion (outer edge portion) of the column member side deformed portion 4 and the outer edge portion of the vertical ridge line portion 5, respectively, and the notches 6 are provided. The tension generated at the end of the shaking is further relaxed by the portion 6, and the proof stress and rigidity of the present embodiment itself can be adjusted to appropriate values by changing the shape (width) and depth of the notch portion 6. It is configured in.

As described above, in this embodiment, the brace fixing portion 1 and the brace fixing portion 3 have a vertical ridge line portion 4c, and when an axial tensile force acts on the brace 32, there are two types of bending deformation and shear deformation. The horizontal member fixing portion 2 and the brace fixing portion 3 have a lateral ridge line portion 5c and are axial to the brace 32 in the same manner as the brace side deformed portion 4. Two types of deformation, bending deformation and shear deformation, occur when a tensile force in the direction is applied. The horizontal member side deformed portion 5 is connected in series, and the pillar material side deformed portion 4 and the horizontal member side deformed portion 5 are further provided. Is different from the plate surfaces of the pillar material fixing portion 1, the horizontal member fixing portion 2 and the brace fixing portion 3 which are joined and fixed to the pillar material 30, the horizontal member 31 and the brace 32 in this embodiment. Since it is configured to be arranged on the surface (non-identical surface), the initial rigidity is secured while exerting a good bending deformation action, the brace 32 is firmly reinforced, and the bearing wall structure is excessive in the outward direction. While suppressing the deformation, when the axial tensile force acts on the brace 32, the column member side deformed portion 4 and the horizontal member side deformed portion 5 are deformed satisfactorily, respectively, and the brace fixing portion 3 with the brace 32. It relaxes the stress concentration near the fixed part, suppresses the splitting of the brace 32 near the fixed part and the escape of the fixing member 20 for fixing the brace fixing part 3 to the brace 32, and reinforces the brace 32. While holding it, it is possible to maintain sufficient seismic resistance even when repeated earthquakes occur.

Further, since this embodiment is formed in a line-symmetrical shape, it should be used without distinction between the brace 32 provided in the front view upward right tilted state and the brace 32 provided in the front view right downward tilt state. There is no need to prepare two types of reinforcing metal fittings for right tilt and left tilt, and there is no need to check for right tilt and left tilt one by one when using, so work is efficient. It will be something that can be done.

Moreover, in this embodiment, since the notch portion 6 is provided in each of the column member side deformed portion 4 and the horizontal member side deformed portion 5, there is no notch portion 6 due to the effect of the notch portion 6. It exerts a higher tension relaxation effect than in the case, and it is extremely epoch-making that it can be adjusted to an appropriate proof stress and rigidity by changing the shape of the notch 6 (changing the notch width and notch depth). It will be a reinforcing metal fitting for bracing. In FIGS. 1 to 3, a notch 8 is provided in the center of the brace fixing portion 3, aiming at the effect of further stress concentration relaxation around the fixing member 20, but there is no notch 8 in the center of the brace fixing portion 3. In some cases, the shape of the brace fixing portion 3 is not limited to the description of this embodiment because sufficient performance can be exhibited.

Specific Example 2 of the present invention will be described with reference to FIG.

In this embodiment, the column material side deformed portion 4 and the horizontal member side deformed portion 5 in the first embodiment have different configurations, and the pillar material side deformed portion 4 and the horizontal member side deformed portion 5 are provided with cutout portions 6. This is a case where the configuration is not provided.

Specifically, as shown in FIG. 4, in the column member side deformed portion 4 of the present embodiment, the first folded curved surface portion 4a formed by bending and projecting from one side edge portion of the column member fixing portion 1 is above. The second folded curved surface portion 4b, which is formed in a right-angled trapezoidal shape having a lower edge longer than the edge, is continuously provided to the first folded curved surface portion 4a, and is bent and projected from one side edge portion of the streak fixing portion 3. A longitudinal ridgeline of a bent angle edge formed on a front-down inclined surface along an inclined side portion of the first folded curved surface portion 4a and serving as a boundary portion between the first folded curved surface portion 4a and the second folded curved surface portion 4b. The portion 4c is formed in an inclined state.

More specifically, the column member side deformed portion 4 of the present embodiment is formed so that the vertical ridge line portion 4c is inclined forward at an inclination angle of about 10 °. The inclination angle of the vertical ridge line portion 4c is not limited to the angle described in this embodiment as long as it has a forward downward inclination, and there is no problem with an inclination angle other than the above.

Further, as shown in FIG. 4, the horizontal member side deformed portion 5 of the present embodiment has the same configuration as the pillar material side deformed portion 4 described above, and specifically, one of the horizontal member fixing portions 2. The third folded curved surface portion 5a formed by bending and projecting from the side edge portion is formed in a right-angled trapezoidal shape having an inner edge longer than the outer edge, and is continuously provided to the third folded curved surface portion 5a and the streak fixing portion 3 The fourth folded curved surface portion 5b formed by bending and protruding from one side edge portion is formed on a downwardly inclined surface extending outward along the inclined side portion of the third folded curved surface portion 5a, and the third folded curved surface portion 5a is formed. The lateral ridge line portion 5c of the bent angle edge, which is the boundary portion between the fourth folded curved surface portion 5b and the fourth folded curved surface portion 5b, is formed in an inclined state.

More specifically, the horizontal member side deformed portion 5 of this embodiment is formed so that the lateral ridge line portion 5c is inclined downward to the right at an inclination angle of about 10 °.

The configuration other than the above is the same as that of the first embodiment.

The present embodiment configured in this way is a brace reinforcing metal fitting capable of exerting a higher tension relaxing action as compared with the first embodiment.

Specific Example 3 of the present invention will be described with reference to FIGS. 5 and 6.

This embodiment is a case where the horizontal member side deformed portion 5 in the first embodiment has a different configuration.

Specifically, in the first embodiment, the column member side deformed portion 4 and the horizontal member side deformed portion 5 are formed to have the same shape, and are configured to have a line-symmetrical shape with respect to an axis of about 45 °. However, in this embodiment, the horizontal member side deformed portion 5 is formed in an asymmetrical shape (different shape) from the column member side deformed portion 4.

More specifically, in the horizontal member side deformed portion 5 of the present embodiment, the third folded curved surface portion 5a is formed on a wider surface than the first folded curved surface portion 4a of the column member side deformed portion 4, and is formed in the lateral direction. The ridge line portion 5c is arranged above the example 1 and is formed in an inclined state. In this embodiment, the horizontal member side deformed portion 5 is a lateral ridge line. The portion 5c is configured to be tilted upward to the right by about 45 °.

The configuration other than the above is the same as that of the first embodiment.

Even when the column member side deformed portion 4 and the horizontal member side deformed portion 5 have different shapes in an asymmetrical shape in this way, the same excellent tension relaxation action as in the first embodiment can be exhibited. It becomes a metal fitting.

Further, by making the deformed portion 5 on the horizontal member side different from the deformed portion 4 on the column member side, it is possible to change the angle and width of the lateral ridgeline portion 5c to adjust the proof stress and rigidity.

Specific Example 4 of the present invention will be described with reference to FIG.

This embodiment is a case where the column member side deformed portion 4 in the third embodiment has a different configuration.

Specifically, the pillar-side deformed portion 4 of this embodiment has the same configuration as the pillar-side deformed portion 4 of the second embodiment.

That is, the column member side deformed portion 4 of the present embodiment has a right-angled trapezoidal shape in which the first folded curved surface portion 4a formed by bending and projecting from one side edge portion of the column member fixing portion 1 has a lower edge longer than the upper edge. The second folded curved surface portion 4b, which is formed in the first folded curved surface portion 4a and is formed so as to be bent and projected from one side edge portion of the streak fixing portion 3, is an inclined side portion of the first folded curved surface portion 4a. The vertical ridge line portion 4c of the bent angle edge, which is formed on the forward downward inclined surface along the above and serves as the boundary portion between the first folded curved surface portion 4a and the second folded curved surface portion 4b, is formed in an inclined state. ..

More specifically, the column member side deformed portion 4 of the present embodiment is formed so that the vertical ridge line portion 4c is inclined forward at an inclination angle of about 10 °.

The configuration other than the above is the same as that of the third embodiment.

The present embodiment configured in this way is a brace reinforcing metal fitting capable of exerting a higher tension relaxing action as compared with the third embodiment.

Specific Example 5 of the present invention will be described with reference to FIGS. 8 and 9.

This embodiment is a case where the horizontal member side deformed portion 5 in the third embodiment has a different configuration.

Specifically, the horizontal member side deformed portion 5 of the present embodiment is bent toward the horizontal member fixing portion 2 toward the side opposite to the joint surface side of the horizontal member fixing portion 2 with the horizontal member 31. The third folded curved surface portion 5a projecting into the state and the third folded curved surface portion projecting from the brace fixing portion 3 toward the side opposite to the joint surface side of the brace fixing portion 3 with the brace 32. It is composed of a fourth folded curved surface portion 5b connected to the 5a and a lateral ridge line portion 5c formed in the connected portion of the third folded curved surface portion 5a and the fourth folded curved surface portion 5b. ..

That is, in this embodiment, the fourth folded curved surface portion 5b of the horizontal member side deformed portion 5 is bent in the direction opposite to the second folded curved surface portion 4b of the column member side deformed portion 4 (direction inverted by 180 °). As shown in FIGS. 8 and 9, the third folded curved surface portion 5a, the fourth folded curved surface portion 5b, the lateral ridge line portion 5c, and the horizontal member fixing portion 2 are formed so as to protrude, so that the horizontal member fixing portion 2 is behind the brace fixing portion 3. It is configured to be arranged in.

The configuration other than the above is the same as that of the third embodiment.

As shown in FIG. 8, the present embodiment configured in this way can be stored in a stacked state. For example, it does not take up space during transportation and is used for practical bracing to improve transportation efficiency. It becomes a reinforcing metal fitting.

The present invention is not limited to Examples 1 to 5, and the specific configuration of each constituent requirement can be appropriately designed.

1 Pillar material fixing part 2 Horizontal material fixing part 3 Bracing fixing part 4 Pillar material side deformation part 4a First folding curved surface part 4b Second folding curved surface part 4c Vertical ridge line part 5 Horizontal material side deformation part 5a Third folding curved surface Part 5b Fourth folding curved surface part 5c Lateral ridge line part 6 Notch part
30 Pillar material
31 Horizontal material
32 Brace

Claims (9)

Reinforcing metal fittings for fixing the column material, the horizontal member, and the brace between them in the wooden frame structure, the column material fixing portion fixed to the column material, and the horizontal member fixed to the horizontal member. A fixing portion and a brace fixing portion fixed to the brace are provided, and the brace fixing portion and the brace fixing portion are deformed portions on the column material side that are deformed when an axial tensile force acts on the brace. The pillar material side deformed portion is projected from the pillar material fixing portion in a bent state toward the side opposite to the joint surface side of the pillar material fixing portion with the pillar material. The first folded curved surface portion and the first folded curved surface portion are connected to the first folded curved surface portion so as to project in a bent state toward the side opposite to the joint surface side of the brace fixing portion with the brace. A reinforcing metal fitting including a double-folded curved surface portion and a vertical ridgeline portion formed in a continuous portion of the first-folded curved surface portion and the second-folded curved surface portion. The column material fixing portion, the horizontal member fixing portion, the brace fixing portion, and the column material side deformed portion are formed from a single metal plate material, and the pillar material fixing portion, the horizontal member fixing portion, and the horizontal member fixing portion. The brace fixing portion provided between the pillar material fixing portion and the horizontal member fixing portion is formed in a flat plate shape, and the pillar material side deformed portion is formed in a bent plate shape and has one side end. The reinforcing metal fitting according to claim 1, wherein an edge is continuously provided to the column member fixing portion, and an other end edge is continuously provided to the brace fixing portion. The first folded curved surface portion is formed with a bent protrusion on one side edge portion of the pillar material fixing portion, and the second folded curved surface portion is formed with a bent protrusion formed on one side edge portion of the brace fixing portion. One of claims 1 and 2, wherein the bent corner portion of the continuous portion of the first folded curved surface portion and the second folded curved surface portion is formed as the vertical ridge line portion. Reinforcing metal fittings described in the section. The third aspect of claim 3, wherein the deformed portion on the pillar material side is bent into an L-shape, a dogleg shape, or a dogleg shape, and has a single vertical ridge line portion extending in the vertical direction. Reinforcing bracket. The pillar-side deformed portion is bent into an L-shape, a dogleg shape, or a V-shape, and the first folded curved surface portion is formed into a right-angled trapezoidal shape having a lower edge longer than the upper edge. The second folded curved surface portion continuously provided to the first folded curved surface portion is formed on a forward downward inclined surface along the inclined side portion of the first folded curved surface portion, and the vertical ridge line portion is inclined forward downward. The reinforcing metal fitting according to claim 3, wherein the reinforcing metal fitting is provided. The reinforcing metal fitting according to any one of claims 1 to 5, wherein the deformed portion on the column member side is provided with a notch in either one or both of the upper edge portion and the lower edge portion. .. The column material fixing portion side on which the column material fixing portion is provided and the horizontal member fixing portion side on which the horizontal member fixing portion is provided are line-symmetrical with respect to a dividing line passing through the brace fixing portion. The reinforcing metal fitting according to any one of claims 1 to 6, wherein the reinforcing metal fitting is formed in. The horizontal member fixing portion and the brace fixing portion are continuously provided via a horizontal member side deformation portion that deforms when an axial tensile force acts on the brace, and the horizontal member side deformation. The portion is a third folded curved surface portion that is projected from the horizontal member fixing portion in a bent state toward the side opposite to the joint surface side of the horizontal member fixing portion with the horizontal member, and the brace fixing. The fourth folded curved surface portion, which is projected in a bent state toward the side opposite to the joint surface side of the brace fixing portion and is connected to the third folded curved surface portion, and the third folded curved surface portion. The reinforcing metal fitting according to any one of claims 1 to 7, wherein the reinforcing metal fitting comprises a lateral ridge line portion formed in a continuous portion of the portion and the fourth folded curved surface portion. The horizontal member fixing portion and the brace fixing portion are continuously provided via a horizontal member side deformation portion that deforms when an axial tensile force acts on the brace, and the horizontal member side deformation. The portion is a third folded curved surface portion that is projected from the horizontal member fixing portion in a bent state toward the side opposite to the joint surface side of the horizontal member fixing portion with the horizontal member, and the brace fixing. The fourth folded curved surface portion, which is projected in a bent state toward the joint surface side of the brace fixing portion and is connected to the third folded curved surface portion, and the third folded curved surface portion and the first portion. The reinforcing metal fitting according to any one of claims 1 to 6, further comprising a lateral ridge line portion formed in a continuous portion with a four-fold curved surface portion.

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