JP3014661B2 - Joining fittings for buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining technique of a rod-shaped structural member constituting a frame in a building, and more particularly, to a joining metal fitting for joining two structural members.

[0002]

2. Description of the Related Art Conventionally, as a means for joining two structural members (for example, a pillar and a horizontal member) in a building, a so-called tenon is formed on one structural member and the other structural member corresponds to the tenon. It has been common practice to form a mortise and then fit the mortise into the mortise. However, in recent years, for the purpose of increasing the strength of the portion where the two structural members are joined, instead of the above-described means of directly forming a tenon and a tenon in the structural member, these two structural members are joined via a joint fitting. Joining has become widespread, and joining fittings of various shapes have been developed.

[0003] For example, Japanese Patent Application Laid-Open No. 7-146441 discloses a joint fitting used for joining a wooden column and a horizontal member made of H-shaped steel. Also, Japanese Patent Application Laid-Open No. 9-11 / 1990
Japanese Patent Publication No. 1877 discloses a joint fitting used for joining a column and a beam in a wooden building. Then, by joining the column and the transverse member using a joint fitting as described in these publications, a large tenon or mortise which causes a decrease in the durability and strength of these structural members themselves is formed. This eliminates the need, and as a result, the strength of the joint can be increased to some extent.

[0004]

However, depending on the joining between the column and the horizontal member using the conventional joining metal fitting as described in the above-mentioned publication, for example, in the vertical and horizontal directions such as at the time of an earthquake, The joint strength at the joint portion when external forces acted in both directions was not sufficient. Therefore, in order to secure the joining strength that can guarantee the desired earthquake resistance at the joining portion, it is necessary to separately use various reinforcing materials (for example, stakes). The present invention has been made in view of such a point, and an object of the present invention is to provide a joint fitting for joining structural members of a building such as a pillar or a horizontal member to each other, and to provide a complicated structure. An object of the present invention is to provide a joint fitting capable of securing a practical level of joint strength with respect to an external force applied in any of a vertical (vertical) direction and a horizontal (horizontal) direction of a building without providing any object.

[0005]

According to the present invention, there is provided a joint for joining two structural members in a building, the joint comprising one of the two structural members. And a protrusion protruding from the surface of the fixed plate to be fitted into the other structural member, wherein the protrusion is vertically fixed. It is characterized by being formed from an upright piece provided substantially perpendicularly from the plate surface and a rib piece provided substantially perpendicularly from the fixed plate surface so as to project right and left from the upright piece. And In addition, in this specification, a "structural member" is a general term for a building member for forming a framework in a building (typically, a wooden building). Therefore, columns (bar-shaped structural members that support loads in an upright state) and cross members (general terms for structural members that are attached to a column in a building in a transverse direction) include beams, girders, trunks, and gates. Is a typical example included in the above structural member.

As described above, the projecting portion of the joint fitting of the present invention extends from the upright piece projecting vertically on the surface of the fixing plate to the left and right (ie, laterally) from the upright piece. And the above-mentioned rib piece protruding in a state of being set. For this reason, when two structural members (for example, a pillar and a horizontal member) are joined by fitting the projection into a part of one of the structural members, a vertical direction which may occur at the joint during an earthquake or the like is generated. In addition, the shearing stress and bending stress acting in the left-right direction can be absorbed and allowed by the upright pieces and the rib pieces having different stretching directions. Therefore, according to the joining fitting of the present invention, it is possible to suppress the occurrence of displacement at the joining portion due to the action of the external force, and to secure a practical joining strength excellent in earthquake resistance.

[0007] In a particularly preferable joining metal fitting of the present invention, the upright piece and / or the rib piece has a hole through which a bolt is passed, and when the projection is fitted into the other structural member. Is characterized in that the structural member is bolted to the projection by passing a bolt through the hole.

In this type of joint, the structural member into which the projection is fitted and the projection can be bolted in the vertical and / or horizontal directions. Thereby, since the joining fitting and the structural member can be firmly connected, the joining strength between the two structural members via the joining fitting can be further improved.

In a further preferred embodiment of the present invention, two or three or more sets of bolt mounting holes for use in bolting the fixing plate to the one structural member are provided in the fixing plate. Here, the set of bolt mounting holes is arranged so as to be symmetrical in the fixing plate in the left-right direction, and the positions of the fixing plate in the vertical direction are different for each set. It is characterized by.

[0010] In this type of fitting, the set of bolt mounting holes is disposed symmetrically on the fixing plate. For this reason, by using the above-mentioned set of bolt mounting holes, it is possible to mutually bolt two joining metal fittings facing each other with one structural member (typically a prism) therebetween. Thereby, the two joining fittings can be firmly fixed to the structural member. Further, in the joint fitting of this style, a plurality of sets (typically two sets) of the set of bolt mounting holes are provided at different positions in the vertical direction in the fixing plate. For this reason, for example, when two bolts to be attached to the front and back of the prism are mutually bolted,
In the case where two joint fittings to be mounted on the right side and the left side of the prism are mutually bolted, it is possible to make sure that the bolts are in contact with each other in the column by properly using different sets of bolt mounting holes. Can be prevented. Therefore,
According to the joint of this style, for example, it is possible to firmly fix the joint at the same position (height) on all sides of the prism, and as a result, other structural members at the same position on all sides of the prism (For example, a horizontal member such as a beam).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a joining fitting of the present invention will be described with reference to the drawings. FIG.
FIG. 1 is a perspective view showing an appearance of a joint fitting 10 according to the present embodiment (hereinafter, simply referred to as “main joint fitting 10”).
FIGS. 2, 3 and 4 are a front view, a left side view and a plan view, respectively, of the metal joint 10.

The present joint 10 is a pillar 1 which is a typical structural member constituting a framework in a general wooden building.
(Typically, a prism) and a joint fitting that can be suitably used when joining a horizontal member 2 such as a beam or a Kamoi. As shown in FIG. 1, the main joint 10 is provided on a fixing plate 12 made of a steel material (typically, structural steel such as carbon steel or chromium molybdenum steel) and a central portion of the surface of the fixing plate 12. And the projection 20. As shown in FIGS. 1 and 2, the fixing plate 12
The column 1 is formed into a rectangular flat plate having a long side in the vertical direction so that the column 1 can be in close contact with the side surface. This fixed plate 1
The bolt mounting holes 14a, 14b, 15a, and 15b are provided on the center line in the longitudinal direction (vertical direction) and above and below a projection 20 described later. 15b is the fixed plate 1
2, two sets are provided at different positions in the vertical direction so as to be left-right symmetric. That is, as will be described later, the two bolt mounting holes 14 above the protrusion 20 are provided.
a, 14b and two bolt mounting holes 15a, 15b below the protrusion 20.
Of the two bolt mounting holes 14a and 14b above the projection 20 and the lower bolt mounting hole 14b and the projection below the projection 20. Lower bolt mounting hole 15b of the two bolt mounting holes 15a and 15b
Is used as a complete set, thereby making it possible to
0 fixing plate 12 can be bolted to the column 1. One embodiment of the bolting will be described later.

Next, the protrusion 20 provided at the center of the surface of the fixing plate will be described in detail. 1 to 4
As shown in FIG.
An upright piece 21 provided to project vertically on the center line of the surface of the fixing plate 12 in the vertical direction (longitudinal direction);
Three pairs of rib pieces 22 a, 22 b, 23 a, 23 b, 24 a, and 24 b provided so as to protrude vertically from the surface of the fixed plate 12 so as to project right and left from the upright piece 21.
And is formed from In the present embodiment,
The upright piece 21 and the rib pieces 22a, 22b, 23a, 23
Each of b, 24a, and 24b is firmly connected to the fixed plate 12 by welding.

As shown in FIGS. 1 and 3, the upright piece 21 is formed in the shape of a trapezoidal plate having notches at both ends when viewed from the side surface of the main metal fitting 10, and has a slightly centered end. Closer, two upper and lower bolt holes 21a,
21b is formed. By providing the upright piece 21 having this shape, in the present joint fitting 10, as described later, when the protrusion 20 is fitted into the horizontal member 2, the horizontal direction of the horizontal member 2 (that is, (The direction perpendicular to the upright piece 21) can be prevented, and the horizontal member 2 can be bolted to the projection 20 using the two bolt through holes 21a and 21b.

On the other hand, as shown in FIGS. 1 and 4, the three pairs of rib pieces 22a,
22b, 23a, 23b, 24a, and 24b are formed in the same trapezoidal plate shape having partially cutouts at both ends when viewed from the upper surface (or lower surface) of the permanent fitting 10;
As shown in FIG. 2 and FIG. 3, they are arranged at substantially equal intervals with the upright pieces 21 interposed therebetween. Thus, the rib piece 22
By providing the a, 22b, 23a, 23b, 24a, 24b, in the present joint fitting 10, as described later,
When the projection 20 is fitted into the horizontal member 2, the vertical direction of the horizontal member 2 (that is, the rib pieces 22 a, 22 b, 23 a, 2
3b, 24a, and 24b). Although not shown, a pair of right and left bolt holes may be formed in the rib pieces 22a, 22b, 23a, 23b, 24a, and 24b with the upright piece 21 interposed therebetween. Thus, the horizontal member 2 can be bolted to the protrusion 20 in the same manner as when the bolt through holes 21a and 21b formed in the upright piece 21 are used.

Next, referring to FIGS. 5 to 8, one example of a case in which the horizontal member 2 (here, a beam) is joined to the same position (height) on all four side surfaces of the column 1 by the permanent joining bracket 10 will be described. An embodiment will be described. The use of the permanent joint 10 eliminates the need to form a large tenon or tenon in the column 1 and the horizontal member 2 themselves. For this reason, the strength of these structural members themselves can be maintained without decreasing.

As shown in FIG. 5, at the same position on the four side surfaces of the pillar 1, a concave portion 1a having a size and a depth that the fixing plate 12 of the permanent metal fitting 10 just fits is formed in advance. This can prevent unnecessary unevenness from being formed on the side surface of the column 1 due to the thickness of the fixing plate 12. Thus, the permanent fitting 10 is inserted into the concave portion 1a, and the two sets of bolt mounting holes 14a, 14b, 15 are formed.
a, 15b, a set of bolt mounting holes 14
By assembling the bolts 30 and the nuts 31 (see FIG. 8) to a, 14b, 15a, and 15b, the two fixing plates 12 opposed to each other with the column 1 interposed therebetween are bolted together in that state. As a result, the bonding strength between the column 1 and the permanent joint 10 can be increased.
The strength of the column 1 as a structural member can be greatly enhanced.

At this time, as shown in FIG. 6, when the permanent bonding metal fittings 10 are attached to all four side surfaces of the pillar 1, the two sets of adjacent permanent bonding metal fittings 10 are set to be different from each other. Bolt mounting holes 14a, 14
Attach bolt 30 to b, 15a, 15b. That is, as shown in FIG. 6, the upper bolt mounting hole 14a of the two bolt mounting holes 14a and 14b above the protrusion 20 and the two bolt mounting holes 15a and 15b below the protrusion 20. Upper bolt mounting hole 15a
When the bolts 30 and the nuts 31 are assembled to each other and the two permanent joints 10 opposed to each other with the column 1 interposed therebetween are bolted to each other, the remaining two permanent joints 10 are bolted to each other by protrusions. 20 lower bolt mounting hole 1 of the two bolt mounting holes 14a and 14b
4b and two bolt mounting holes 15 below the protrusion 20
The bolting is performed by using the lower bolt mounting hole 15b of a and 15b. Thus, FIGS. 6 and 8
As shown in the figure, it is possible to prevent the two bolts 30 crossing each other inside the column 1 from interfering with each other, and as a result,
The permanent joining fitting 10 can be firmly fixed at the same height (position) on all four side surfaces of the column 1.

Next, the horizontal member 2 in which a groove and a bolt insertion port (both not shown) corresponding to the shape of the projection 20 of the main joint 10 are formed in advance is attached to the main joint 10. Specifically, as shown in FIGS. 7 and 8, the positioning is performed while fitting the protrusions 20 into the grooves formed in the horizontal member 2, and then, the bolts 28 and the nuts 29 are used to position the main fitting 10. The horizontal member 2 is bolted. That is, the bolt 28 is inserted from the bolt insertion opening provided in the horizontal member 2, and penetrates the opposite side of the horizontal member 2 while passing through the bolt through holes 21 a and 21 b provided in the upright piece 21. Then, the bolt 2 penetrated at the location
8 By attaching and tightening the nut 29 to the tip, the strong joining between the column 1 and the horizontal member 2 is completed (see FIG. 8). Alternatively, although not shown, the three pairs of rib pieces 22
When a pair of left and right bolt through holes are provided in the a, 22b, 23a, 23b, 24a, and 24b with the upright piece 21 interposed therebetween, a different direction (vertical direction) is used in the same manner as when the above bolt through holes 21a and 21b are used. ) And the horizontal member 2
Can be bolted to

In this embodiment, as described above, the main joint 10 is attached to the side surface of the column 1 in advance, and then the horizontal member 2 is bolted while being fitted into the main joint 10. The joining process of the two structural members by the joining metal fitting 10 is not limited to the above procedure. For example, first, the main joint 10 may be bolted to each of the horizontal members 2, and then the main joint 10 may be fixed to a predetermined position of the column 1 together with the horizontal member 2. In addition, in the case of this procedure, the bolt mounting holes 14a, 1 of the main joint 10 are used for bolting the column 1 and the main joint 10.
The horizontal member 2 is attached to the main joint 10 so that the portions 4b, 15a, 15b are exposed (that is, the bolt mounting holes 14a, 14b, 15a, 15b of the main joint 10).
Is appropriately selected and used for the transverse member 2 having a size and a shape from which the portion can be exposed. ).

As described above, a preferred embodiment of the joint fitting of the present invention has been described with reference to the drawings. However, it is not intended that the present invention be limited to the joint fitting 10 having the shape shown in these drawings. For example, the above-mentioned rib pieces (typically provided in 2 to 4 pairs, preferably 3 pairs with the upright pieces interposed therebetween) are substantially protruded from the upright pieces 21 to the left and right from the surface of the fixed plate. The rib pieces 22a, 22b, 22b, and 22b may be provided so as to protrude vertically.
It is not limited to 23a, 23b, 24a, 24b. For example, the rib pieces 22a, 22 according to the above embodiment
Instead of b, 23a, 23b, 24a, and 24b, rib pieces having a U-shape as viewed from the front of the joint fitting 10 may be provided symmetrically with respect to the upright piece 21. Alternatively, the protrusions 20 having the above-described shape may be provided on both surfaces of the fixing plate 12. According to the joint of the present invention having this shape, it is possible to jointly connect two structural members in a coaxial direction, for example, to joint the beam with the joint being interposed therebetween.

[0022]

According to the present invention, there is provided a joining bracket for joining two structural members (for example, a column and a horizontal member), and the vertical (vertical) direction and the horizontal (horizontal) direction are provided without providing a complicated structure.
Thus, it is possible to provide a joint fitting capable of securing a practical level of joint strength with respect to an external force applied in any of the directions. In other words, in the joint fitting of the present invention, as a result of providing the projection composed of the upright piece and the rib piece on the surface of the fixing plate fixed to one of the structural members, it can occur at the joint portion between the two structural members during an earthquake or the like. The vertical and horizontal shear stresses and bending stresses can be absorbed by the upright pieces and the rib pieces. For this reason, according to the joint of the present invention, it is possible to suppress the occurrence of displacement at the joint due to the action of the external force, and it is possible to secure a practical joint strength excellent in earthquake resistance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a joint fitting according to an embodiment of the present invention.

FIG. 2 is a front view showing the structure of the joint according to the embodiment of the present invention.

FIG. 3 is a left side view showing the structure of the joint fitting of the present invention according to one embodiment.

FIG. 4 is a plan view showing the structure of the joint according to the embodiment of the present invention.

FIG. 5 is an explanatory view showing a state in which the joint fitting of the present invention according to one embodiment is fixed to a pillar.

FIG. 6 is an explanatory view showing a state in which the joint fitting of the present invention according to one embodiment is fixed to a pillar.

FIG. 7 is an explanatory view showing a state in which the column and the lateral member are joined via the joint fitting of the present invention according to one embodiment.

FIG. 8 is an explanatory view showing a state in which the column and the lateral member are joined via the joint fitting of the present invention according to one embodiment.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 pillar 1 a recess 2 horizontal member 10 joining bracket 12 fixing plate 14 a, 14 b, 15 a, 15 b bolt mounting hole 20 projection 21 upright piece 21 a, 21 b bolt through hole 22 a, 22 b, 23 a, 23 b, 24 a, 24 b rib piece

Claims (3)

(57) [Claims] 1. A joint fitting for joining two structural members in a building, wherein the fitting is fixed to one of the two structural members and fitted to the other structural member. And a projection protruding from the surface of the fixing plate, wherein the projection comprises an upright piece projecting substantially vertically from the surface of the fixing plate in the up-down direction, and the upright piece. And a rib piece protruding substantially perpendicularly from the surface of the fixed plate so as to project right and left from the fixing plate. 2. The joining metal fitting according to claim 1, wherein the upright piece and / or the rib piece has a hole for passing a bolt, and the projection is fitted into the other structural member. In this case, a bolt is inserted through the hole to bolt the structural member to the projection. 3. The joint fitting according to claim 1, wherein a set of bolt mounting holes used when bolting the fixing plate to the one structural member is provided in the fixing plate. Three or more sets are provided, wherein the set of bolt mounting holes are arranged so as to be symmetrical in the fixing plate, and the positions of the fixing plates in the vertical direction are different for each set. A metal fitting characterized by being arranged in a position.