JP3033830U - Spike hardware for wooden structures - Google Patents

Abstract

(57) [Problem] To provide a metal fitting for a wooden structure capable of firmly joining without causing a decrease in accuracy and strength. A T-shaped spiked metal piece (10) has bolt holes (30) for forming bolts formed on a joint surface side with a laminated material (50) and a joint surface side with another member in a direction perpendicular to the glued laminated member. Further, each tapered pin 20 is provided on both sides of the joint surface with the laminated material 50.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a metal item used for joining wooden structures.

[0002]

[Prior art]

 Conventionally, there are various shapes such as a single letter type, an L-shaped type, and a T-shaped type for joining metal used for construction such as wooden structures, and used for joining laminated lumber depending on the place of use. There are things specific to each application, such as those used for general construction, those used for mounting wooden foundations, and battledore bolts.

As a configuration common to these, a bolt hole is provided in the metal object, and a bolt is passed through the hole to fasten the bolt to join the wood and the metal object. Then, another structure (whether made of wood, concrete, or metal) is fixed to the opposite surface of the metal object, the other end, or another metal object connected to the metal object to construct a solid structure. To be done.

[0004]

[Problems to be solved by the invention]

 However, due to the dryness of the above-mentioned wood or due to vibration such as an earthquake, a deviation occurs between the bolt through hole of the wood and the bolt hole of the metal object, and the deviation of the wood penetrates the bolt. A gap is created between the inner surface of the hole and the surface of the bolt, causing loosening. As a result, strength and accuracy are often reduced. If the number of tightening bolts is further increased to make the joint stronger, the joint strength will be reduced rather than the number of bolt through holes in the wood.

The present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a metal structure for a wooden structure capable of firm joining without lowering accuracy and strength. Is.

[0006]

[Means for Solving the Problems]

 Therefore, the hardware according to claim 1 of the present application is basically characterized by having a taper pin on the wood bonding surface of the hardware main body having the bolt bonding structure.

In the above configuration, when the bolts are tightened by the bolt connection structure (for example, when the wood and the hardware are bolted by passing the bolts through the bolt holes provided in the metal body and the bolt through holes of the wood), Certain taper pins are difficult to insert into wood, and their wedge effect increases joint strength, especially in the direction perpendicular to the bolt tightening direction, and does not cause loosening, so accuracy is not reduced.

The tapered pin used for the metal piece having the spike structure as described above may have a conical shape or a polygonal pyramid shape.

[0009]

[Embodiment of the invention]

 Specific embodiments of the present invention will be described below. 1 and 2 show the structure of one embodiment of a spike metal piece used for joining laminated wood, of which FIG. 1 is a front view showing the basic structure of the metal piece, and FIG. It is a top view which shows the state used for joining. As shown in FIG. 1, the metal fitting 10 of the present embodiment has a T-shape, and is provided at two positions on the joint surface side with the laminated member 50 and on the joint surface side with other members in the direction perpendicular to the laminated member 50. Bolt holes 30 for forming a bolt joint are provided at the points, and six taper pins 20 are provided on both sides of the joint surface with the laminated member 50. Then, in order to attach the metal product 10 to the assembly material 50 as shown in FIG. 2, the metal material 10 is sandwiched and adhered at the time of processing the assembly material 50, and then the bolt hole 30 and the bolt penetration of the assembly material 50. It is attached by tightening the bolt 40 through the hole 51. With such a structure, the tapered pin 20 is hard to be embedded in the laminated member 50, and the wedge effect is obtained. Therefore, since there is no looseness due to the clearance of the bolt hole 30 and both accuracy and strength are increased, the number of bolts required is small, the amount of work is reduced, and the appearance is excellent. In particular, when vibration is applied in the direction along the joint surface due to an earthquake or the like, the effect of this wedge effect is large and there is almost no deviation in that direction.

The configurations of FIGS. 3A, 3B, and 4 are explanatory views showing the configuration of the spike metal piece provided with the configuration of another embodiment of the present invention of the joint metal piece used for general construction. . Among them, FIGS. 3A and 3B are a front view and a plan view showing the configuration of the one-character type spike hardware 11. In the configuration shown in the figure, bolt holes 31 for bolt connection are drilled at 5 locations in each of the upper and lower stages, and a total of 10 locations, and a total of 6 taper pins 21 are integrated between the upper and lower stages. Is provided for the purpose. FIG. 4 is a front view showing the structure of the T-shaped spike hardware 12. In this construction, bolt holes 32 for bolt joint construction are provided in each of the three directions of the T-shape, and taper pins 22 are provided at 12 locations in total, at 4 locations around each. When using these to join timber, one timber is sandwiched from both sides with these metal pieces 11 or 12, and bolted to join. At that time, similarly to the above-mentioned configuration, the tapered pin 21 or 22 is hard to be embedded in the wood, and the wedge effect is obtained, so that there is no looseness due to the gap between the bolt holes 31 and 32, and the accuracy and strength are increased. In particular, when vibration is applied in the direction along the joint surface due to an earthquake or the like, the effect of this wedge effect is large and there is almost no deviation in that direction.

FIGS. 5 (a) and 5 (b) show a structure of a spike metal fitting according to another embodiment of the present invention, which is specialized for mounting a wooden base. 5A and 5B are a front view and a side view showing a configuration of a spike metal piece 13 used when joining to 54. In the structure shown in the figure, the spike hardware body is composed of the L-shaped metal concrete 13a fixed to the base 54 by the anchor bolts 60 and the like and the braided metal concrete 13b extending at an angle toward the wood 52. In this case, bolt holes 33 for constructing a bolt are formed in the brace concrete 13b, and taper pins 23 are provided at four locations around the bolt holes 33. Then, in order to join the base 54 and the braided wood 52 as shown in the figure with the metal fitting 13, before or after fixing the L-shaped metal concrete 13a to the base 54, the bolt holes 33 and The bolt 41 is inserted into the bolt through hole 53 of the wooden piece 52, and the wooden piece 52 is bolted to the joint surface of the braces 13b to be attached. By doing so, the tapered pin 23 is hard to fit in the wood 52, and the wedge effect is obtained.

FIGS. 6 to 8 show a structure of a base concrete 70, a wooden base 55, and a pillar 57. The structure of the spike hardware according to another embodiment of the present invention specialized for corner connection. The structure of the spike metal fitting 14 used as a base plate when fixing the base 55 on the foundation concrete 70, and the spike metal fitting 15 used to support the pillar 57 on the base 55 at a right angle. 9 is a front view (FIG. 6) showing the above, a plan view (FIG. 7), and an explanatory view (FIG. 8) of the spike hardware 15. The base plate-shaped spike hardware 14 shown in FIGS. 6 and 7 has a pentagonal shape in which the acute-angled portion of the right-angled equilateral triangle is cut by the width of the base 55, and the joint surface side with each base 55. In addition, two bolt-shaped bodies 42 for constructing a bolt joint with the base 55 are erected and fixed, and two taper pins 24a are provided side by side near the right angle portion. Two taper pins 24b are provided near the acute cutting edge along the edges. It should be noted that holes 62 for anchor bolts 61 are formed at a total of three locations along the side of the right angle portion. In order to join and fix the base 55 on the basic concrete 70 using this spike hardware 14, mortar 71 is laid on the basic concrete 70, and the anchor bolt 61 protruding from the basic concrete 70 is passed through the hole 62. By bolting the spike metal fitting 14, the metal fitting 14 is fixed on the base concrete 70. Then, the bolt-shaped body 42 is passed through the bolt through hole 56 of the base 55 and tightened. At this time, the tip end side of the bolt-shaped body 42 penetrates a slide hole 15b formed in the bottom surface of the spike metal piece 15 described later and is nut-fastened thereon. As a result, the taper pins 24a and 24b of the spike hardware 14 are hard to fit into the base 55. On the other hand, the pillar 57 is placed on the right-angled portion of the base 55, and the pillar 57 is firmly fixed by the spike hardware 15 described later.

Further, the spike hardware 15 is configured by an L-shaped metal fitting whose vertical surface forms a joint surface with the column 57, and triangular reinforcing pieces 15a are welded and fixed on both sides in the width direction. The joint surface of the metal piece 15 is provided with bolt holes 34 for constructing a bolt joint, and taper pins 25 are provided at each of two upper and lower stages. As described above, the slide hole 15b is provided on the bottom surface of the spike hardware 15, the bolt-shaped body 42 penetrating therethrough is nut-fastened, and the spike hardware 15 is fixed on the base 55. It will be. Then, the pillar 57 placed right above the right angle portion of the spike metal fitting 14 is further inserted with the bolt 43 into the bolt through hole 58 of the bolt hole 34 and the pillar 57 so that the pillar 57 is attached to the joint surface of the spike hardware 15. It is attached by bolting (bolting two spike hardware 15 to two side faces forming a right angle of the pillar 57 as shown in FIG. 7). By doing so, the tapered pin 25 is hard to fit into the column 57, and a wedge effect is obtained. Therefore, by tightening the nuts of the bolt-shaped body 42 inserted through the slide holes 15b on the bottom surface of the spike metal fitting 15, the taper pins 24a and 24b of the spike metal fitting 14 are engaged and fixed to the base 55, and the spikes are further mounted on the base 55. Since the metal fitting 15 is fixed, the pillar 57, the base 55 and the foundation concrete 70 are integrally fixed.

On the other hand, as shown in FIGS. 9 (a) and 9 (b), the spike metal piece 15 has a hole 15c for bolting in the middle of the reinforcing piece 15a, as shown in FIGS. 10 (a) and 10 (b). It is also possible to bolt one end of the spike metal fitting 16 for attachment to a different streak so as to also serve as a structure for fixing the streak.

Further, at the time of a horizontal load test to be described later, the spik metal fittings 14 to 16 (for bracing attachment in FIG. 9) were used at the corners of the load bearing wall 80 shown in FIG. A spike metal fitting 17 as shown in FIGS. 11 (a) and 11 (b) was used for fixing the pillar 57a that was erected midway. That is, in this structure, the structure is of the same letter type as that of the metal of FIG. 3, the bolt holes 35 for the bolt joint structure are formed at two positions on both ends, and two bolt-shaped bodies 44 are formed at the two positions inside. In addition to being erected, a total of four taper pins 26 are integrally provided on the upper and lower two stages on the inner side. Then, a bolt (not shown) provided upright on the base 55 is passed through the bolt hole 35 and tightened with a nut to fix the spike hardware 17 on the base 55. At the same time, the pillar 57a is placed on the upper center of the spike metal piece 17, and the pillar 57a is fixed to both sides of the spike metal piece 17 with the same metal piece as the spike metal pieces 15 and 16. By doing so, the taper pin 26 of the spike metal fitting 17 is caught and fixed to the bottom surface of the pillar 57a, and the spike metal fitting 17 is fixed on the base 55, so that the pillar 57a and the base 55 are integrally formed. It will be fixed.

12 (a) and 12 (b) are a front view and a plan view showing a configuration of a spike metal fitting 18 according to another embodiment of the present invention specialized for joining a battledore bolt. In this structure, the surface forming the connecting member of the battledore bolt constitutes the joint surface of the spike hardware 18, the bolt hole 36 for constructing the bolt joint is formed in the joint surface, and the bolt hole is formed on the same surface. Two taper pins 27 are provided with 36 in between. Then, this joint surface is attached to the pillar or wall surface by bolting. At this time, the taper pin 27 is pushed into the pillar or the wall surface, and the wedge effect similar to the above is obtained.

The inventor of the present invention shows two laminated members 59a and 59b in FIG. 13 by using the construction of the conventional one-character type metal fitting and the one-character type spark metal fitting 11 shown in FIGS. 3 (a) and 3 (b). An experiment was conducted in which bolts were tightened and joined in this way, and compression was applied from both sides. The following Table 1, Table 2 and Fig. 14 show the results of the joint compression test at that time. From these, the metal piece having the tapered pin (with the pin) of the present invention has the lateral displacement (displacement). It was confirmed that the wedge effect due to the biting of the taper pin was small.

[0018]

[Table 1]

[0019]

[Table 2]

Further, the present inventor leans columns 57 and 57a on a base 55 as shown in FIG. 15, bridges braces 57b and 57c between them, and hangs beams 55a on them. A horizontal load test was performed using the manufactured load bearing wall 80. 7A shows the configuration of the conventional example (Type A) using the chevron plate and the metal plate used in the experiment, and FIG. 6B shows FIGS. The corner portion of the bearing wall 80 is fixed using the base plate 14 shown in FIG. 9 and the spike metal fittings 15, 15a and 16 for bracing shown in FIGS. 9 and 10, and the base is provided by the spike metal fittings 15, 15a, 16 and 17. The configuration (Type B) of the present invention in a state in which a pillar 57a standing upright in the middle of 55 is fixed is shown. In the configuration of the example of the present invention, the above-mentioned experiment is performed in a state where the one-character type spike metal fitting 11 is attached at the intersection of the braces and the spike hardware 19 on the home base is attached to the corner of the beam 55a. It was

In this horizontal load test, an experiment is conducted separately for the case where a load P is applied in the horizontal direction on the beam 55a side and the case where a load P is applied in the horizontal direction for the base 55 side. The difference (δ1−δ2) between the horizontal displacement δ1 on the beam 55a side and the horizontal displacement δ2 on the base 55 side is defined as the horizontal displacement δH, and the height of the columns 57 and 57a between the beam 55a and the base 55 is increased. The change in the load P and the horizontal displacement δH is examined with the ratio (δH / H) to the height H as the shear deformation angle γ of the wall, and Fig. 16 (when the load P is applied horizontally to the beam 55a side) ) And FIG. 17 (when the load P is applied in the horizontal direction on the base 55 side).

As is clear from these test results, when the same load is applied, the horizontal displacement δH of the present invention example (Type B) is smaller than that of the conventional example (Type A). . Especially in the case where the load P is applied in the horizontal direction on the base 55 side, it can be seen that the present invention example has almost no displacement, and is effective when used as an earthquake-proof construction, for example. For reference, when the shear deformation angle γ of the wall in FIG. 16 is 1/300 rad (δH = 8.33 mm), 1/200 rad (δH = 12.50 mm), and 1/120 rad (δH = 20.83 mm). The respective loads and the maximum loads in the case of the configuration of the conventional example and the case of the configuration of the present invention were examined, and the results shown in Table 3 below were obtained. Also in FIG. 17, the horizontal displacement δH when a load of 1 tf, 2 tf, 3 tf, 4 tf and 5 tf was applied was examined, and the results shown in Table 4 below were obtained.

[0023]

[Table 3]

[0024]

[Table 4]

[0025]

[Effect of the invention]

 According to the configuration of the spike metal fitting of the present invention described in detail above, when the bolt is tightened by the bolt joint structure, the taper pin on the joint surface side is hard to be pushed into the wood, and the wedge effect thereof makes it particularly effective in the bolt tightening direction. Since the joining strength in the direction at right angles is increased and there is no loosening, a high precision product can be obtained. Therefore, even if vibration such as an earthquake is applied, the strength and accuracy are not deteriorated, and a solid structure can be constructed.

[Brief description of the drawings]

FIG. 1 is a front view showing a basic configuration of an embodiment of a spiked metal used for bonding a laminated wood.

FIG. 2 is a plan view showing a state in which the structure of the spike metal is used for joining a laminated wood.

FIGS. 3A and 3B are a front view and a plan view showing an embodiment of a one-letter spike hardware used for general construction.

FIG. 4 is a front view showing an embodiment of a T-shaped spike hardware used for a general building.

5A and 5B are a front view and a side view showing a configuration of a spike hardware according to another embodiment of the present invention which is specialized for mounting a wooden base.

FIG. 6 is a front view showing a configuration of two kinds of spike hardware according to another embodiment of the present invention, which is specialized for joining a base concrete, a wooden base and a pillar.

FIG. 7 is a plan view of the above configuration.

FIG. 8 is an explanatory diagram showing a configuration of one of the spike hardware of the above configuration.

FIG. 9 is a front view showing another configuration of the spike hardware fixed on a base.

FIGS. 10A and 10B are a side view and a front view showing a configuration of a spike hardware for attaching a staggered metal.

FIGS. 11A and 11B are a plan view and a front view showing a configuration of a spike metal used for fixing a column erected in the middle of a base during a horizontal force test.

12A and 12B are a plan view and a front view showing a configuration of a spike metal fitting according to another embodiment of the present invention specialized for joining a battledore bolt.

FIG. 13 is an explanatory diagram showing an experimental state of a joint compression test of two laminated members that are bolted and joined using a conventional one-character metal piece and the one-character metal object of the present invention.

FIG. 14 is a graph showing the results of a joint compression test at that time.

FIG. 15 is a front view showing a configuration of a conventional example and a configuration of an example of the present invention when a horizontal load test is performed using a load bearing wall.

FIG. 16 is a graph showing a change in the load P and a horizontal displacement δH when a load P is applied in the horizontal direction on the beam side.

FIG. 17 is a graph showing a transition of a change between the load P and the horizontal displacement δH when the load P is applied in the horizontal direction on the base side.

[Explanation of symbols]

10, 11, 12, 13, 14, 15, 16, 17, 1
8,19 Spike hardware 20,21,22,23,24a, 24b, 25,2
6, 27 Taper pin 30, 31, 32, 33, 34, 35, 36
Bolt holes 40, 41, 43
Bolts 42, 44
Bolt-shaped body

Claims (2)

[Utility model registration claims] 1. A spike metal fitting for a wooden structure, characterized in that the metal fitting body having a bolted joint has a tapered pin on a wood joining surface. 2. The spike metal part for a wooden structure according to claim 1, wherein the shape of the tapered pin is a cone or a polygonal pyramid.