JPH06322839A - Connecting jig - Google Patents

Abstract

PURPOSE:To shorten connecting work by providing a bar member having a recessed part in the longitudinal direction of the outer circumference having a circular or elliptic section, and fitting a pipe-like part into the recessed part and guide groove for adhesive of the bar member, CONSTITUTION:A bar member 2 having substantially a circular, elliptic, or polygonal section and having a recessed part in the longitudinal direction of the outer circumference is formed, and a guide groove 8 for adhesive is formed on the side surface of at least one end part of the bar member 2. A spiral irregular part 6 is provided on the surface of the bar member 2, and a pipe-like part 7 is fixed to the recessed part 5 of the bar member 2 by welding or with an adhesive to form a connecting jig 1. Thus, since the connecting jig is inserted to the inner part of a timber, and coated with the adhesive, salt damage or dewing can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining jig for joining timbers, laminated lumbers or stones, or joining timbers or laminated lumbers to stones or concrete. More specifically, the present invention relates to a wooden house or a large wooden structure having a large cross-section structure. The present invention relates to a joining jig used for joining structural members such as a joint structure or a joint of a building structure such as a frame structure of a building.

[0002]

2. Description of the Related Art In recent years, for the purpose of labor saving and rationalization of construction work for houses, etc., a jig for connecting beams and eaves girders, eaves girders and pillars, girders and through columns, etc., or construction A joint structure and a joint structure have been developed for the purpose of rationalization. For example, Japanese Utility Model Laid-Open No. 63-162008 discloses a frame fitting used for a wooden frame construction method, and Japanese Utility Model Laid-Open No. 2-93401 discloses a joint between a lower end of a pillar and a base of a wooden frame building. Reinforcement hardware, Japanese Laid-Open Patent Publication No. 3-295946 discloses a dowel fitting, and a wall foundation structure for a wooden frame construction using the metal fitting.
Disclosed is a joint structure of a wooden structural material in which a wooden frame is not disassembled. In all of these, metal fittings, bolts and nuts are used to join the structural members. Further, as a joint structure, there are Japanese Patent Laid-Open Nos. 63-14939 and 63-149.
40, 63-14941 discloses a joint structure in a wooden frame structure for the purpose of improving the structural strength of the joint structure.

[0003]

However, the above-mentioned conventional joining jig and joint structure have problems such as bolts, nuts, and
There is a problem that the number of parts such as washers is large and the fixing work is complicated and the workability is poor. In addition, the metal fittings are large and heavy, lacking in portability, and have a problem in safety when working in high places. It takes time and effort to install the metal fittings during installation, and it is necessary to bury the cylinder or plug member drilled in the specified position at the specified position, and bolts are screwed to the hole of the buried cylinder or plug. It is difficult to do so, the workability is poor, a large number of work steps are required, and the construction period is prolonged. There is also a problem that the timber between the timbers fixed with bolts and nuts loses the tightening force in several years due to the shrinkage of the timbers and the backlash easily occurs and the physical strength decreases.
Furthermore, metal parts such as bolts, nuts, and metal fittings are oxidized by dew condensation to reduce their durability, and the imported material contains salt because it is a marine storage tree, and the salt content corrodes the bolts, metal fittings, etc., and deteriorates the physical strength. There is a problem that durability is deteriorated. Also, in the event of a fire, there was a problem in disaster prevention that the external bolts and metal fittings would melt first and the strength could not be expected, and the house would collapse. Furthermore, the biggest drawback of the frame structure using wood is the brittleness of the joint, and various joints and joints have been devised by ancient carpenters to maintain the physical strength, but these structures are all There is a problem that it is complicated and requires a lot of man-hours for its processing, resulting in poor productivity. Further, there is a problem that large-section timber and the like are difficult to obtain due to a small production amount, and that long-span beam arches and trusses such as wooden or laminated wood cannot be transported due to regulations such as the Road and Traffic Law.

The present invention solves the above-mentioned problems of the prior art. The conventional complicated joint and joint structure have an extremely simple structure, and when used together with an adhesive, the structural strength is improved and the joint and joint are improved. Another object of the present invention is to provide a joining jig that has a simple structure that can significantly improve the workability of joining and can shorten the construction period significantly, can significantly reduce the number of production steps, and is low cost and suitable for mass production.

[0005]

To achieve this object, the present invention has the following constitution. The joining jig according to claim 1 has a concave portion formed in a cross section of a circle, an ellipse, or a polygon in the longitudinal direction of the outer periphery from one end or a predetermined portion in the vicinity thereof to the other end or a predetermined portion in the vicinity thereof. A rod-shaped member having, one end of the rod-shaped member is opened in the recess of the rod-shaped member near the end or a predetermined portion of the rod-shaped member, and the other end is extended from the other end of the rod-shaped member or a predetermined portion by a predetermined length. The pipe-shaped part to be fitted is provided. According to a second aspect of the present invention, there is provided a joining jig according to the first aspect, which includes an engaging portion formed in one opening of the pipe-shaped portion and an engaging portion that is detachably engaged with the engaging portion. And a pipe-shaped branch pipe having the same. The joining jig according to claim 3 has a recess having a circular, elliptical, or polygonal cross section formed from one end portion in the longitudinal direction of the outer periphery or a predetermined portion in the vicinity thereof to the other end portion or a predetermined portion in the vicinity thereof. A rod-shaped member having, a pipe-shaped portion fitted in the recess, and a pipe-shaped portion that is insertably engaged with a hole formed in a predetermined portion in the longitudinal direction of the pipe-shaped portion or the longitudinal direction of the pipe-shaped portion. And a pipe-shaped branch pipe integrally formed in a T-shape at a predetermined portion of. Claim 4
The joining jig according to claim 1 is any one of claims 1 to 3.
In the above, the guide groove of the adhesive is formed on the side surface of at least one end of the rod-shaped member. The joining jig according to claim 5 is the joint jig according to any one of claims 1 to 4, wherein the guide groove and the recess of the rod-shaped member are formed to communicate with each other, and the guide groove is provided with the pipe-shaped portion. At least one end has an opening.
The joining jig according to claim 6 is the joint jig according to any one of claims 1 to 5, wherein the pipe-shaped portion fitted in the recess of the rod-shaped member is fixed to the rod-shaped member by welding or an adhesive. It is configured to be attached. The joining jig according to claim 7 is the joining jig according to any one of claims 1 to 5, wherein the pipe-shaped portion fitted in the recess of the rod-shaped member is made of a metal wire such as a stainless wire or nylon fiber. It has a structure in which it is fixed with a string-like material made of synthetic resin. The bonding jig according to claim 8 is the bonding jig according to any one of claims 1 to 7, wherein the rod-shaped member has an outer peripheral surface on which projections or protrusions or projections and depressions having a spiral shape are formed. Have

Here, the rod-shaped member of the joining jig is made of metal such as iron, carbon fiber, boron fiber, or the like having a substantially circular or elliptical cross section or a substantially polygonal shape such as a triangle, a quadrangle, or a hexagon. Consists of a molded product of a composite material of organic or inorganic fiber such as glass fiber or metal fiber and a synthetic resin, ceramics using cement or the like, or a composite product thereof, and a concave portion in the longitudinal direction such as a substantially central portion thereof. Is formed from one end or a predetermined portion in the vicinity thereof to the other end or a predetermined portion in the vicinity thereof. The rod-shaped members may have the same diameter or different diameters.
Further, a joining portion such as a screwing means is formed at the end of the rod-shaped member,
It is also possible to join a plurality of pieces in a length according to the construction site to form a rod-shaped member having a predetermined length. The ridges and irregularities formed on the outer surface of the rod-shaped member are those in which continuous ridges or discontinuous protrusions are randomly formed, or adhesive that flows out from the other end of the rod-shaped member such as a spiral Desirably, the adhesive functions as a buffer for the agent, and is formed in a shape that fills the space between the outer surface of the rod-shaped member and the peripheral wall of the communication hole of the structural member to expand the bonding area and give an anchor effect. Depending on the construction site and the type of adhesive (having a strong viscosity), one or several ridges may be formed at the end of the rod-shaped member or branch pipe on the adhesive return side, or may not be formed. Further, the width and depth of the uneven portion such as the spiral groove may be changed according to the viscosity of the adhesive. The shape of the side surface of at least one end of the rod-shaped member may be a bulged shape, a flat shape, or a concave shape, but it is efficient to properly use it depending on the application and the type of structural member. For example, between wood or between laminated wood, a bulging material can be inserted by pressing wood scraps etc., and in the case of concrete or stone material, a concave one can be inserted while crushing the convex part in the hole, A flat-shaped product is preferably used as the hole-finished product. The cross-sectional shape of the recess formed in the longitudinal direction of the outer surface of the rod-shaped member is V-shaped, U
A shape such as a character shape, a semicircular shape, or a square shape is appropriately selected according to the shape of the pipe-shaped portion to be fitted. The depth of the recess is appropriately selected according to the type and size of the rod-shaped member or the shape of the pipe-shaped portion. By forming a guide portion such as an adhesive guide groove for guiding the injected adhesive to the outer surface at the end of the rod-shaped member, the adhesive can be smoothly guided between the surface of the rod-shaped member and the peripheral wall of the communication hole. As a result, the workability of injecting the adhesive can be improved. When a protrusion having an acute angle is formed on the adhesive outflow side of the rod-shaped member, a joining jig is inserted into the joining hole and the protrusion is pierced into the bottom of the joining hole to prevent the rod-shaped member from rotating. You can In particular, when the branch pipe is disengaged and the branch pipe is pulled out from the opening of the pipe-shaped portion, it is possible to prevent the rod-shaped member from coming off together with the rotation of the joining jig and the branch pipe, thereby improving reliability and workability. . The pipe-shaped portion and the branch pipe are made of a tubular material and are made of the same material as the rod-shaped member. It is preferable that the pipe-shaped portion and the branch pipe are made of synthetic resin or thin metal, because the length can be adjusted depending on the construction site and the length can be adjusted. The pipe-shaped part and branch pipes have a round cross section,
It is formed in a polygonal shape such as a triangle or a square, or a semi-circular shape. The pipe-shaped portion and the branch pipe are engaged with each other by forming a screw hole in the engagement portion of the pipe-shaped portion and the engagement portion of the branch pipe and screwing them into each other, or by forming a fitting portion or the like so that they are engaged with each other by fitting. May be. Further, an uneven portion such as a ridge may be formed on the surface of the pipe-shaped portion. This is because the adhesive functions as a buffer. By forming the branch pipe, the adhesive can be smoothly injected into the joining jig depending on the construction site. After the adhesive is injected, the branch pipe may be disengaged from the rod-shaped member and pulled out, or may be left as it is when the length of the branch pipe is short and there is no hindrance when plugging or the like. The pipe-shaped portion and the hollow portion of the branch pipe are preferably mirror-finished in order to reduce the inflow resistance of the adhesive, but when the viscosity of the adhesive is low, mirror-finishing is not necessary. As an adhesive, wood to wood, laminated wood to laminated wood, wood to laminated wood, wood or laminated wood to stone, concrete structure,
It is appropriately selected according to the types of structural members such as stone materials and concrete structures. As a specific example, an organic adhesive such as an epoxy or polyurethane adhesive, or an inorganic adhesive such as a mortar is used. It should be noted that it is desirable that the adhesive is injected by two-step injection or pressure injection in the case of wood, laminated wood or concrete structure. This is to prevent the adhesive from being absorbed by the types of wood, laminated wood, and concrete, resulting in a shortage of the amount of adhesive and a decrease in adhesive strength. As structural members, lumber such as prisms, lumber such as laminated wood or laminated boards, wood such as stone pillars, concrete pillars, beams, walls and the like are used. The joining holes formed so as to communicate with each other between the structural members are perforated in the contact surface between the plurality of structural members in accordance with the shape of the joining jig.
It is desirable that the diameter is formed to be substantially the same as or slightly larger than the maximum diameter of the rod-shaped member of the joining jig, and the depth thereof is at least equal to or slightly deeper than the length of the joining jig to be housed. This is to reduce the workability of punching and the amount of adhesive used. The holes for joining may be formed by drilling on the spot with a drill or the like, or may be preformed in a factory by a precut method or the like. One or a plurality of joining holes are formed in a substantially vertical shape, a slanting shape, a slanting shape, a parallel shape, or the like with respect to the contact surface depending on the construction site.
In addition, it is preferable to apply an adhesive to the contact surface around the bonding hole because the structural strength can be further improved. After the injection of the adhesive into the joining hole is completed, the surface can be made flush by covering with a spigot or embedded wood, or repaired with putty to make the finished surface beautiful.

[0007]

With this structure, the joining jig can be made very simply because only the concave portion for abutting or fitting the pipe-shaped portion is formed on the outer surface of the rod-shaped member. Further, since the pipe-shaped portion can be selected according to the joining place, the workability and the flexibility of the work can be improved or expanded. Since a joining jig made of metal or the like is embedded and fixed in the joining portion between the structural members, the stress against bending, pulling, compressing, shearing or the like can be remarkably improved. Further, the type, diameter, length, and number of joining jigs can be changed according to the strength required at the joining points. Since the joining hole is filled with the joining jig and the adhesive around the joining jig, the mechanical strength against bending stress and the like can be improved, and the joining jig is covered with the adhesive. It is possible to prevent oxidization due to dew condensation or the like and weakening due to salt damage. Further, since the joining method is simple and the joining strength is strong, it is possible to easily repair a ready-made structure. Since the joining method is simply to form the joining holes and cutting parts on the abutting surface of each structural member, insert and embed the joining jig and inject the adhesive, the work process can be greatly simplified and the number of work steps can be reduced. You can Since no complicated metal fittings with a large number of parts are used, damage loss of materials due to incorrect mounting can be prevented. Furthermore, by embedding the joining jig in the wood, the interior is protected by the carbonized film on the wood surface in the event of a fire, preventing the joining jig from melting and maintaining the structural strength to prevent collapse of the building and safety. Can be increased.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view of a joining jig of a first embodiment of the present invention, and FIG. 2 (a) is a side view thereof.
(B) is a perspective view of a main part of the adhesive on the outflow end side,
FIG. 3 is a front view of an essential part of an end portion showing an application example of the cross-sectional shape of the rod-shaped member of the joining jig, and FIG. 4 is a cross-sectional end view showing the recessed portion of the rod-shaped rod-shaped member. Reference numeral 1 is a metal joining jig of the first embodiment, 2 is a round bar-shaped member made of metal, 3 is an end of the stick-shaped member 2 formed in a bulging shape, and 4 is an adhesive. Two projecting portions 5 projectingly formed at symmetrical positions of the tip of the outflow side end portion 3 are concave portions formed in a substantially U-shape from the end portion of the outer surface of the rod-shaped member 2 to the end portion, Reference numeral 6 denotes a concavo-convex portion formed in a spiral shape on the surface of the rod-shaped member 2, and reference numeral 7 denotes a recessed portion 5 in which one end extends from the end of the recess 5 of the rod-shaped member 2 and the other end extends from the other end of the rod-shaped member 2. The pipe-shaped portion 8 fitted in the is an adhesive guide groove formed in a concave shape on the surface of the adhesive outflow side end portion 3 formed in a bulge shape. In FIG. 3, (a) shows a rod-shaped member 2 having a substantially circular cross-sectional shape, which facilitates insertion into a rough-cut joint hole formed in wood or the like. In (b), the cross-sectional shape of the rod-shaped member 2 is formed into a substantially elliptical shape, and the purpose thereof is to disperse and reinforce external force, such as joining a base and a pillar, and prevent the member from rotating. In particular, the bending stress from the major axis direction is strengthened. (C) to (e) are formed in a substantially square shape, a rectangular shape, a substantially hexagonal shape, or a substantially triangular shape, and are suitable for preventing rotation between members and joining them. Application example (b)-
In (e), since the rod-shaped member does not rotate, the adhesive outflow end 3
The protrusion 4 is not formed. In FIG. 4, the shape of the recess is appropriately selected according to the shape of the pipe-shaped portion and the construction site. Further, the pipe-shaped portion can be appropriately selected according to the shape of the recess and the type of adhesive. First configured as described above
A method for joining the structural members and a joining structure between the structural members will be described below using the joining jig of the embodiment. (Execution example 1) FIG. 5 is a perspective view at the time of joining joints such as through columns and barrels using the joining jig of the first embodiment of the present invention, and FIG. 6 (a) is joining joints. It is a principal part sectional view of the joining hole part center which shows the state at the time, and FIG.6 (b) is a principal part sectional view of the joining hole part center which shows a state after a joint joining process. 9
Is a metal wire made of stainless steel wire or the like for fixing the rod-shaped member 2 and the pipe-shaped portion 7, 10a is a tree such as a through pole, 10b is a receiving material for a barrel, 11 is a cutting tree 10a and a receiving material 10b
Joining surface of the joint, 12 is a joining hole formed so as to communicate with the joining surface 11 of the cutting tree 10a and the receiving member 10b, 13 is an opening of the joining hole 12, and 14 is joined after joining the joining. A plug made of wood or synthetic resin, which covers the opening 13 of the hole 12 and is flush with the surface of the pillar material, 15 is an adhesive injection gun, 1
Reference numeral 6 denotes an adhesive that is injected from the pipe-shaped portion 7 and is filled through the adhesive guide groove 8 while filling the bonding hole 12 until the opening 13 of the bonding hole 12 is visually recognized as outflow.
First, the joining jig 1 is communicated with the joining surface 11 of the cutting tree 10a and the receiving member 10b and has a diameter slightly larger than the diameter of the joining jig 1.
A joining hole 12 having a depth such that the central portion of the container comes to the joint joining surface 11 is formed with a drill or the like. The pipe-shaped portion 7 is fitted in the recess 5 of the rod-shaped member 2 in the joining hole portion 12, and the joining jig 1 fixed by the metal wire 9 is inserted, and the protrusion 4 is formed in the joining hole portion 1.
Insert the butt against the bottom of 2. The adhesive injection gun 15 is attached to the opening of the pipe-shaped portion 7. Then adhesive 1
6 is filled into the bonding hole 12 until the adhesive 16 is visually recognized in the opening 13 of the bonding hole 12 while filling the bonding hole 12 through the hollow portion of the pipe-shaped portion 7. Figure 6 (a)
As shown in FIG. 2, the filling of the adhesive 16 is injected from the pipe-shaped portion 7 as indicated by the arrow, and the surface of the rod-shaped member 2 and the bonding hole portion 1 are filled.
The gap between the peripheral wall of 2 is filled. At this time, the adhesive 16 is formed by the buffer effect of the uneven portion 6 on the surface of the rod-shaped member 2.
The channeling and short pass are prevented and the adhesive 16 is filled with almost no leakage in the gap. When the injection of the adhesive 16 is further continued, it is possible to visually observe that the adhesive 16 rises while filling the gap between the outer surface of the pipe-shaped portion 7 and the joining hole portion 12, so that the filling unevenness can be prevented. When the adhesive 16 is visually recognized in the opening 13 of the joining hole 12, the engagement between the adhesive injection gun 15 and the pipe-shaped portion 7 is released. At that time, since the rod-shaped member 2 is fixed to the bottom of the joining hole 12 by the protrusion 4, it does not rotate or come off. Next, the insertion plug 14 is provided so as to be flush with the opening 13 of the joining hole 12. If the plug 14 is made of the same material as that of the cutting tree 10a, it can be integrated with the cutting tree 10a without a feeling of discomfort when the plug 14 is installed flush. In this embodiment, a rod-shaped member having a circular cross section is used, but if a member having a quadrangular shape, a triangular shape or an elliptical cross section is used, it is possible to rotate the joining material on the joint surface only by inserting the joining jig. Since it is possible to prevent such problems, workability can be improved. (Experimental Examples 1 and 2) Two sets of 10.5 cm square and 115 cm long cedar wood were set as two sets, respectively, and seven sets of test pieces for connection sets were prepared. The test piece was manufactured by drilling a hole with a diameter of 18φ from the opposite side of the cedar material which is orthogonal to the contact surface to be abutted and making a hole with a depth of 5 cm on the other cedar material at the center line. Four sets of test bodies having two holes perforated at 2.5 cm from the end to form the joining holes and three sets of test bodies perforated at four sites at 3.5 cm from the apex of the diagonal line were prepared. Next, metal diameter 15
φ, length 10 cm, length of recess is 5 mm
A 4 cm metal pipe-shaped part is placed in the recess and one end is located at the end of the rod-shaped member. A welding jig is attached to each welding hole and fixed with stainless steel wires. After contacting them and temporarily fixing the joints with a support jig, etc., a polyurethane adhesive is filled from the pipe-shaped part with an adhesive injection gun, and after visually observing the return flow at the opening, plug it in. After a predetermined time, the support jig was removed to prepare a test body. Using this test body, a tensile test of the joint was conducted. The results are shown in (Table 1).

[Table 1] (Comparative Examples 1 to 4) As a comparative example, the same diameter as in Experimental Example 1,
3 sets (comparative example 1) in which cedar wood having a length was used and only the mouthpiece was bonded without a jig for joining, chasing large splice 2
A set (Comparative example 2), a sickle sickle joint (1 set) (Comparative example 3), and a dovetail joint (3 sets) (Comparative example 4) were prepared. Then, a tensile test was performed under the same conditions as in Experimental Example 1. The results are shown in (Table 1). However, a pulling test was performed on the joints for the chase large joint and the sickle joint. As is clear from this (Table 1), the experimental example has a tensile strength of 60 kg / cm ² or more, and the comparative example has a tensile strength of 16 kg / cm ^{2 to} 40 kg.
/ Cm ^{2 and the} ant joint has only a tensile strength (proof strength) of ^{2 to 3} kg / cm ² , and the rigidity of this experimental example exceeds that of the base metal (19. 69tf
/ Mm), and the rigidity is 40 times to 250 times that of the comparative example. It was also found that the adhesive alone increases the rigidity but causes a large variation in the yield strength, and the effect of the jig maintains the safety. As described above, according to the present embodiment, the joining process of wood or the like can be performed by an extremely simple process of forming a communication hole with a drill, and an extremely simple operation to obtain a joint structure having excellent mechanical strength. I knew I could do it. Further, in the case of wood or the like, it was found that the joining strength can be increased by inserting the joining jig in parallel with the fiber direction. It was found that when using a laminated material, etc., in which the fiber directions are orthogonal to each other, the strength is extremely high regardless of the fiber directions. Furthermore, since it is possible to visually confirm whether the adhesive 16 is sufficiently spread, it is possible to obtain a strong joint structure without adhesion unevenness. In addition, since the joining jig is embedded in the present embodiment in contrast to the one in which timbers are joined from the outside by the conventional joining jig, the joining jig is protected by the carbonized film on the wood surface at the time of fire, As a result, columns and beams are prevented from collapsing and fire resistance,
It was found to significantly improve safety. From this, it can be said that when a fire occurs in a wooden house, it takes a long time to collapse the house, which has a great effect on saving lives. It was also found that since the joint jig and the adhesive become core materials at the joints and can handle tensile and bending shear stress, accidents such as dismantling during construction can be prevented. From these facts, it was found that a long pillar material or plate material excellent in mechanical strength can be obtained very easily. Even after the building is completed, the mechanical strength of the joining jig allows it to maintain its proof strength against external forces such as earthquakes and typhoons, and since the joining jig has its surface covered with an adhesive, it does not rust due to condensation. It is possible to prevent the stone material, concrete, or the like from expanding due to expansion. (Embodiment 2) FIG. 7 is a perspective view of a joining jig in a second embodiment of the present invention. The joining jig 1a of the second embodiment is different from the joining jig of the first embodiment in that the pipe-shaped portion 7a is bent and locked at both ends of the rod-shaped member 2a, and the branch pipe 15 is provided at one opening thereof. The point is that they are screwed together. As described above, according to the present embodiment, since the pipe-shaped portion 7a can be locked only by bending the rod-shaped member 2a, the rod-shaped member 2a of the pipe-shaped portion 7a can be locked.
The attachment structure can be extremely easily installed, and the joining structure having high yield strength can be obtained at a predetermined portion by extending the branch pipe even when the joining hole is deep. (Embodiment 3) FIG. 8 is a partial sectional end view of a joining jig of a third embodiment of the present invention, and FIG. 9 is an overall perspective view thereof.
The joining jig 1b of the third embodiment is different from the joining jigs of the first and second embodiments in that the pipe-shaped branch pipe 17a is a branch pipe hole formed in the center of the pipe-shaped portion 7a. The point where the pipe-shaped portion 7 is screwed, the openings at both ends of the pipe-shaped portion 7 are opened to the adhesive guide groove 8, and the openings at both ends of the pipe-shaped portion 7 are the adhesive-guide groove. 8 is the point opened. With respect to the joining jig of the third embodiment having the above-described structure, a method of joining structural members and a joining structure between the structural members will be described below. FIG. 10 is a perspective view of a main part at the time of butt construction used for joining beams or girders using the joining jig of the third embodiment of the present invention, and FIG. 11 shows a state at the time of execution. It is a principal part sectional view of the junction part center. Reference numeral 12 is a joining hole formed in the butt joint surface 11, 10a and 10b are cuttings and receiving members such as beams for butt jointing, and 19 is a branch pipe 15 on the contact surface of the joining hole portion 11a.
A branch pipe mounting groove formed by cutting for mounting a, 18 is an opening of a branch pipe mounting groove 17, 14 is an adhesive injection gun,
Reference numeral 14 denotes an adhesive which is injected from the branch pipe 15a and is filled into the opening 18 of the branch pipe mounting groove 17 while filling the joining hole 11c through the pipe-shaped portion 5a until the return flow is visually recognized. In the construction of the present embodiment, first, the cutting tree 10 that is to be struck
a and the receiving surface of the receiving material 10b are communicated with each other, and the diameter is approximately the same as the diameter of the connecting jig 1b so that the central portion of the connecting jig 1 comes to the connecting surface 11 of the cutting tree 10a and the receiving material 10b. A branch pipe mounting hole portion 19 for mounting the branch pipe 17a is formed on the contact surface of the joint hole portion 12 and one of the connecting hole portions 12 that communicate with each other.
Then, the branch pipe 17a is inserted into the joining hole 12 communicating with the contact surface.
The joining jig 1b engaged with is inserted, the cutting tree 10a and the receiving material 10b are brought into contact with each other, and temporarily fixed by a support jig or the like.
Next, the adhesive injection gun 15 is attached, and as shown in FIG. 11, the adhesive 15 is filled with the adhesive 15 through the pipe-shaped portion 5a and the surface of the bonding jig and the peripheral wall of the bonding hole 14c as shown by the arrow. The gap between them is filled in the same manner as in Example 1. Next, a structural strength test was conducted on this construction example, and the results thereof will be described. (Experimental Examples 4 and 5) A metal jig having a diameter of 15 is used as a joining jig.
Prepare the branch pipes and cedar materials of Experimental Example 1 except that 3 bodies (Experimental Example 4) having a diameter of φ and a hollow portion of 5φ and a length of 10 cm (Experimental Example 4) and 3 bodies having a length of 36 cm (Experimental Example 5) were used. did. A hole with a diameter of 18φ and a length of approximately 6 cm (experimental example 4) was drilled from the both ends of the center transverse line of the end of each cedar wood to 2.5 cm, and the diameter was 18φ. Of about 19 cm (Experimental Example 5) was drilled to form a bonding hole. Then, as shown in FIG. 10, two branch pipe mounting groove portions were formed by cutting with a router in parallel from the joining hole portion toward both outer portions, respectively, on one of the pair of cedar materials. The joining jigs of Experimental Examples 4 and 5 were attached to the two joining holes and the branch fitting groove of the pair of cedar materials, and the cedar materials were abutted and fixed with the support jig, and then the polyurethane adhesive was used. The agent was filled from the branch pipe with an adhesive injection gun, the return flow was visually confirmed at the opening, and then the branch pipe was removed and a plug was provided. After the adhesive was solidified, a bending strength test was conducted according to a conventional method. The results are shown in (Table 2) and (Table 3).

[Table 2]

[Table 3] (Comparative Examples 6 and 7) Using the cedar material of Experimental Example 1, test specimens for sitting on a sickle joint and on a chasing large wire joint were prepared, and a bending test was conducted in the same manner as in Experimental Example 4. The results are shown in (Table 2) and (Table 3). As is clear from these (Table 2) and (Table 3), the flexural strength (kgf) is 330 kgf to 11 in this embodiment.
While it has 00 kgf, the sickle on a comparative example has 10
It was 0kgf, and there was only 450kgf in the chase large connection. From the above, it was found that by changing the length and number of jigs, it is possible to easily carry out bonding with bending strength that cannot be exceeded conventionally. Also in terms of rigidity,
It has been found that the material of this example has a rigidity close to that of one material and can have a higher rigidity than the conventional comparative example. From this, according to this embodiment, the span can be widened, and the design pin structure can be changed to a structure close to a rigid joint (a structure similar to a rigid frame structure), which can give width and breadth to the design. I understood. As is clear from this structural strength test, the joining method of the present embodiment can obtain the same rigidity as that of the single product, although it is a very simple joining method as compared with the conventional joining method. It is possible to easily obtain long-span beams with large cross-sections, barrels, etc. that were difficult to obtain on site. Also, scrap materials can be effectively used.

(Fourth Embodiment) FIG. 12 is an overall perspective view of a bonding jig in a fourth embodiment of the present invention. Reference numeral 1c is a joining jig of Example 4, 2c is a rod-shaped member in which a recess for fitting is formed up to a predetermined portion, 2'c has a recess for mounting cement foundation in a predetermined portion of an outer peripheral surface for embedding concrete, A concrete embedding portion having an anchor portion 2 ″ c formed at an end thereof, one end of which is opened to the adhesive guide groove 8 and the other end is bent at a right angle at a predetermined portion of the rod-shaped member 2c to be vertically erected and fitted. The fixed pipe-shaped portion 17b is a pipe-shaped branch pipe attached to the opening at the end of the pipe-shaped portion 7c.About the joining jig in the fourth embodiment of the present invention configured as described above The method of joining the structural members will be described below.

(Construction Example 4) FIG. 13 is a cross-sectional view of the main part of the center of the joint hole when the pillar, base and concrete foundation are jointed using the joint jig of the fourth embodiment. 21 is a concrete foundation, 22 is a foundation joined to the concrete foundation 21, 23 is a pillar joined to the foundation 22, 24 is a foundation 2
2 is a groove portion for mounting an end portion of the pipe-shaped portion formed on the contact surface of 2.
Reference numeral 5 is an opening of the groove portion 24 for mounting the end portion of the pipe-shaped portion. First, when the concrete foundation 21 is placed, the concrete embedding portion 2'c of the joining jig 1c is embedded to complete the concrete foundation 21. Next, the remaining portions embedded in the concrete foundation 21 with a diameter slightly larger than the diameter of the joining jig 1c on the contact surfaces of the base 22 and the pillars 23 are joined to a depth such that the rest 22 and the pillars 23 are embedded. The hole 12 is bored with a drill or the like. The abutment surface of the base 22 has a groove portion 24 for mounting the end portion of the pipe-shaped portion.
To form. Next, the joining jig 1c in which the pipe-shaped portion 7c in which the branch pipe 17b is attached to the rod-shaped member 2c is fitted to the joining hole portion 12 of the base 22 is inserted and attached to the concrete foundation 21, the foundation 22, and the pillar 23. Contact. Next, the adhesive 16 is injected with the adhesive injecting gun 15 until it returns to the opening 25 of the pipe-shaped end mounting groove 24 as shown by the arrow, and when the adhesive 16 is visible. The adhesive injection gun 15 is removed, and the opening 25 is plugged (not shown) to finish the construction. As is apparent from the present embodiment, it is possible to easily join wood and concrete or stone material by using a joining jig having an anchor portion.

[0011]

As described above, according to the present invention, since the joining jig has an extremely simple structure in which the pipe-shaped portion is simply fitted into the recess of the rod-shaped member, the handling is extremely easy and the joining jig is made of wood or the like. Since it is inserted inside and is coated with an adhesive, salt damage and dew condensation can be prevented, and the durability of the joint structure can be significantly improved without causing corrosion or the like.
Further, since the joining jig is not visible from the outside, it is possible to form a joint joint structure having an excellent aesthetic appearance and to increase the added value of the structure. In the event of a fire, the carbonized film of the wood protects the internal joining jig and does not cause thermal deformation, so it is possible to prevent collapse and secure evacuation time. By using a plurality of joining jigs, it is possible to minimize the progress of the damaged part and significantly improve the safety. Also,
In conventional structures, especially wooden structures, the joints are variously processed and thinned, so they are vulnerable to tensile compression stress, bending stress, and shear stress.To compensate for this, make structural members such as wood thicker or thicker than necessary. Although an auxiliary metal was required, in the case of the present invention, the strength can be artificially controlled by changing the shape, diameter, length, and number of joining jigs, so that construction can be performed according to the required strength of the joining portion. In addition, by joining using a commercially available prism, a prism having a large cross section and a beam having a long span, which are excellent in structural strength, can be easily manufactured by on-site construction. Furthermore, by using an adhesive and a jig together, the rigidity of the joint can be almost the same as that of a solid piece such as wood, so it is possible to sufficiently increase the number of stories such as a three-story building, and at the time of construction. Since such an effect can be obtained with a small number of welding jigs, workability at the time of construction, labor saving and rationalization can be remarkably improved, and it is possible to realize a welding jig excellent in mass productivity at low cost. Is.

[Brief description of drawings]

FIG. 1 is a perspective view of a bonding jig according to a first embodiment of the present invention.

FIG. 2 (a) is a side view of the joining jig of the first embodiment of the present invention. FIG. 2 (b) is a perspective view of a main portion of the joining jig of the first embodiment of the present invention on the side where the adhesive flows out.

FIG. 3 is a front view of the main part on the end side showing an application example of the cross-sectional shape of the rod-shaped member of the joining jig of the first embodiment of the invention.

FIG. 4 is a cross-sectional end view showing a concave portion of a round rod-shaped rod member according to the first embodiment of the present invention.

FIG. 5 is a perspective view at the time of joining a joint such as a through pillar and a barrel using the joining jig of the first embodiment of the present invention.

FIG. 6 (a) is a cross-sectional view of the main part of the center of the joining hole showing the state at the time of joint joining using the joining jig of the first embodiment of the present invention. (B) First embodiment of the present invention Sectional view of the main part of the center of the joining hole showing the state after the joint joining is performed using the joining jig of the example

FIG. 7 is a perspective view of a joining jig according to a second embodiment of the present invention.

FIG. 8 is a partial cross-sectional end view of a joining jig according to a third embodiment of the present invention.

FIG. 9 is an overall perspective view of a joining jig according to a third embodiment of the present invention.

FIG. 10 is a perspective view of an essential part at the time of butt construction used for joining beams or girders using the joining jig of the third embodiment of the present invention.

FIG. 11 is a cross-sectional view of the main part of the center of the joining hole portion at the time of butt construction using the joining jig of the third embodiment of the present invention.

FIG. 12 is an overall perspective view of a joining jig according to a fourth embodiment of the present invention.

FIG. 13 is a cross-sectional view of the main part of the center of the joining hole when joining a pillar, a base, a concrete foundation, etc. using the joining jig of the fourth embodiment of the present invention.

[Explanation of symbols]

 1, 1a, 1b, 1c Joining jig 2, 2a, 2b, 2c Rod-like member 3 Adhesive outflow end 4 Protrusion 5 Recess 6 Spiral uneven part 7, 7a, 7b Pipe-like part 8 Adhesive Guide Groove 9 Metal Wire 10a Cutting 10b Receiving Material 11 Joining Surface 12 Joining Hole 13 Opening 14 Insert Plug 15 Adhesive Injection Gun 16 Adhesive 17,17a Branch Pipe 18 Branch Pipe Hole 19 For Branch Pipe Installation Groove 20 Opening of groove for mounting branch pipe 21 Concrete foundation 22 Base 23 Pillar 24 Pipe for end of pipe-shaped portion 25 Groove for mounting of pipe-shaped end

Claims (8)

[Claims] 1. A rod-shaped member having a cross section of a circle, an ellipse, or a polygon, and having a concave portion formed in a longitudinal direction of the outer periphery from one end or a predetermined portion in the vicinity thereof to another end or a predetermined portion in the vicinity thereof, and the rod-shaped member. A pipe-shaped portion, one end of which is opened in the recess of the member near the end or a predetermined portion of the rod-shaped member and the other end of which is extended by a predetermined length from the other end or the prescribed portion of the rod-shaped member and fitted therein. And a jig for joining. 2. The joining jig according to claim 1, wherein a pipe-shaped branch pipe is detachably inserted into one opening of the pipe-shaped portion. 3. A rod-shaped member having a cross section of a circle, an ellipse, or a polygon and having a concave portion formed from one end portion in the longitudinal direction of the outer periphery or a predetermined portion in the vicinity thereof to the other end portion or a predetermined portion in the vicinity thereof; And a pipe-shaped part that is detachably inserted into a hole formed in a predetermined part in the longitudinal direction of the pipe-shaped part or is integrally formed in a T-shaped part in the predetermined part. A jig for joining, comprising: a branch pipe. 4. The bonding jig according to claim 1, wherein a guide groove for an adhesive is formed on a side surface of at least one end of the rod-shaped member. 5. The guide groove of the rod-shaped member communicates with the recess, and the guide groove has an opening at least at one end of the pipe-shaped portion. The jig for joining according to any one of 1. 6. The pipe-shaped portion fitted into the recess of the rod-shaped member is fixed to the rod-shaped member by welding or an adhesive.
Jig for joining described in. 7. The pipe-shaped portion fitted in the recess of the rod-shaped member is fixed with a metal wire such as a stainless wire or a synthetic resin string made of nylon fiber or the like. The jig for joining according to any one of claims 1 to 5. 8. The joining jig according to claim 1, wherein a protrusion, a protrusion, or an uneven portion is formed on the outer peripheral surface of the rod-shaped member.