JP6808196B2 - Connected structure - Google Patents

Description

The present invention mainly relates to a connecting structure used for installing a wood-based board material.

Until now, wooden construction has become widespread mainly in small buildings such as houses. However, in recent years, the technology for manufacturing laminated lumber has improved, and it has become possible to stably supply timber with a large cross section, and it has become possible to reasonably realize the wooden construction of larger buildings such as apartment houses and public facilities. It was. There are various types of laminated wood, and one of them is CLT. CLT is also called an orthogonal laminated board, and it is laminated so that the fiber directions of adjacent plate pieces are orthogonal to each other, the directionality of strength is canceled, and the skeletal structure of the building is completed only by combining CLTs. You can also.

Technological development for using CLT for the skeletal structure of buildings has been underway for some time, and the patent document described below is an example thereof. Among them, Patent Document 1 discloses a floor structure in which adjacent laminated woods are connected by H steel, and it is assumed that CLT is used for this laminated wood. The H steel material is arranged between the adjacent laminated woods, and a pair of upper and lower slits are machined on the side surface of the laminated wood material over the entire length, and the flanges of the H steel material are inserted into the opposing slits. By connecting the laminated wood with H steel in this way, a floor structure that is lightweight yet has strength is realized.

The following Patent Document 2 discloses a connecting structure that does not require tightening of bolts and nuts during construction. In this connecting structure, two members called a main material and an auxiliary material are integrated, and a rod-shaped gathering tool is attached to the auxiliary material via a metal fitting or the like. The tip of the pulling tool is arranged so as to protrude from the surface of the auxiliary material, and enters the holding hole processed into the main material. Further, a flange-shaped projecting piece is provided at the tip of the gathering tool, and by embedding the restraint in the holding hole, the displacement of the projecting piece is regulated and the main material and the auxiliary material are connected. Therefore, at the time of construction, the connection work is completed only by contacting the main material and the auxiliary material in a predetermined arrangement and then embedding a restraint in the holding hole. Further, in Patent Document 2, it is assumed that CLT is used as a main material and a secondary material.

Japanese Unexamined Patent Publication No. 2017-25524 JP-A-2017-2526

Due to its high rigidity, CLT can be laid horizontally as a structural material for partitioning the upper and lower floors of a building, which has various advantages such as simplification of the internal structure of the building. When the CLT is laid horizontally in this way and another CLT is erected on the upper surface or the lower surface thereof, it is necessary to firmly connect the two in order to secure the strength. Specific examples of this connection method include a method of using L-shaped hardware so as to straddle the boundary, a method of embedding bolts and nuts inside the CLT, and a method of embedding a hozo pipe so as to straddle the boundary and driving a drift pin. Can be mentioned.

Among such connecting methods, the L-shaped hardware has problems such as protruding toward the indoor side and restricting the installation of the interior and the like, and having many exposed parts and easily causing dew condensation. In addition, the method of embedding a bolt and a nut requires a means for exposing the head of the bolt and the nut, and may make the tightening work difficult. Further, regarding the method using a hozopipe and a drift pin, depending on the arrangement of the two CLTs, it may not be possible to drive the drift pin, and this method may not be introduced.

Regarding the method of connecting adjacent CLTs, it is possible to use the conventional technique as it is, but as in the specific example described above, some problems remain. Therefore, it is not impossible to develop a completely new connection method suitable for CLT. However, it takes a lot of labor to develop a completely new connection method, it is difficult to predict the demand, and the manufacturing cost tends to be high, which may hinder its widespread use.

The present invention was developed based on these circumstances, and is mainly used for installing wood-based board materials, and can connect two members in all forms such as installing wall materials on floor boards, and is also excellent in strength and cost. The purpose is to provide a connected structure.

The invention according to claim 1 for solving the above-mentioned problems is a connecting structure for mounting the other material on one material, and has a plate embedded in a recess provided on the surface of the one material, a front plate and a protruding plate. Using metal fittings arranged at right angles, nails for fixing the plate to the one material, bolts for integrating the plate and the hardware, and pins for integrating the other material and the protruding plate. The plate has a size such that the entire plate is covered by contact with the other material, and the nails are inserted into the surface of the plate embedded in the recess toward the one material. The front plate is in surface contact with the plate, the bolt is inserted from the front plate toward the plate, and the protruding plate is inserted into a slit provided in the other material. The pin is inserted from the surface of the other material so as to be orthogonal to the projecting plate, the front plate is provided with a tenon protruding toward the plate, and the surface of the plate is provided with the tenon. A mortise groove for fitting the bolt is provided, and the other material can be installed on the one material via the integrated plate and the hardware , and the shear load can be transmitted by fitting the mortise and the mortise groove. characterized in that there.

The connecting structure according to the present invention is for integrating two adjacent members, and is assumed to be used for installing a large wood-based board, but is not limited to this and is used for other purposes. Can also be deployed. Further, for convenience, one of the two adjacent members is referred to as one material, and the other is referred to as the other material. The one material and the other material are plate materials and bar materials such as CLT, and the surfaces of both the one material and the other material are in contact with each other, and this contact is maintained by the connecting structure according to the present invention. Shall be.

The present invention is mainly composed of five elements of a plate, hardware, nails, bolts and pins, of which the plate is a metal plate and is embedded in a recess processed on the surface of one of the materials. It is desirable that the depth of the recesses match the thickness of the plate, and that both surfaces are lined up without steps after embedding. Further, in order to fix the plate to one material, a plurality of nails are inserted from the surface of the plate toward the one material. Therefore, the plate is provided with nail holes that penetrate the front and back surfaces.

It is not enough that the recess can be embedded in the plate, but it is necessary to regulate the displacement of the plate, and the shape of the recess is adjusted so that the inner peripheral surface of the recess is in contact with the side peripheral surface of the plate. However, it is not necessary to completely bring the side peripheral surface of the plate and the inner peripheral surface of the recess into close contact with each other, and a gap may be provided as long as the displacement of the plate can be regulated. By regulating the displacement of the plate in this way, the shear load can be transmitted through the plate.

The hardware is a metal part interposed between one material and the other material, and has two types of plate-shaped parts called a front plate and a protruding plate. Among them, the front plate is a portion that comes into surface contact with the surface of the plate embedded in the recess, and one hardware has one front plate. On the other hand, the protruding plate is a plate protruding in the orthogonal direction from the front plate, and is inserted into a slit processed on the surface of the other material. The arrangement of the front plate and the protruding plate is various, and when the protruding plate extends from both ends of the front plate, the hardware has a U-shaped appearance, but when one protruding plate extends from the center of the front plate, the hardware Has a clove-like appearance. Further, when the protruding plate extends only from one end of the front plate, the hardware has an L-shaped appearance.

The plate and the front plate are not only brought into surface contact, but some kind of convex portion is provided on the front plate, and this is fitted into a groove or the like provided on the plate . This fitting prevents the hardware from being displaced along the surface of the plate and allows the shear load to be transmitted between the plate and the hardware. The plate shall have a size for mounting the entire front plate. In addition, take measures such as embedding the head of the nail in the plate so that the head of the nail does not come into contact with the hardware.

Bolts are used to inseparably integrate the plate and hardware, insert them from the front plate toward the plate, and bring the front plate into close contact with the plate at its head. Therefore, the tip of the bolt needs to be screwed into the female screw or nut, and in some cases, the tip of the bolt is provided on the female screw in the plate, or the tip of the bolt is exposed to the outside and the nut is screwed there. As a matter of course, a plurality of bolts are used for one piece of hardware.

The pin is used to integrate the hardware and the other material, and is inserted from the surface of the other material and penetrates the protruding plate. In order to insert the pin, the other material is pre-processed with a hole that intersects the slit. At the time of construction, the hardware is first fixed to one material, then the other material is moved, a protruding plate is inserted into the slit, and the one material and the other material are brought into surface contact. After that, when a pin is inserted from the surface of the other material toward the protruding plate, the hardware and the other material are integrated via the pin. As for the pin, in addition to the drift pin, a bolt may be used.

In this way, if the plate can be embedded in the surface of one material by fixing the hardware to one material via the plate and connecting the one material and the other material via the hardware, the two members of all forms. Can be connected without difficulty and has excellent versatility. In actual construction, first process a recess in one material, embed a plate in it, insert nails, then fix the hardware with bolts, and finally insert the protruding plate of the hardware into the slit of the other material. On the other hand, insert a pin from the surface of the material toward the protruding plate.

The invention according to claim 2 is for improving the strength against a shear load. A meshing portion that curves outward or inward is provided on the side peripheral surface of the plate and the inner peripheral surface of the recess, and the meshing portion is provided. It is characterized in that the plate and the recess are fitted. The shear load acting between one material and the other material is transmitted by contact between the side peripheral surface of the plate and the inner peripheral surface of the recess. Therefore, as in the invention of claim 2, the shape of the side peripheral surface of the plate is complicated, and the contact area between the two is increased by providing the meshing portion on the side peripheral surface of the plate and the inner peripheral surface of the recess. It becomes possible to transmit a larger shear load.

In claim 2, "curved outward or inward" means that a section that is locally curved outward or inward is provided with reference to a plate having a simple linear side peripheral surface. The curved shape is not limited, and can be freely selected from a straight line like a saw blade and a wavy shape composed of curved surfaces. Further, for the section "curved outward or inward", the shapes of both are matched so that the plate and the recess are fitted and meshed with each other so that the shear load can be reliably transmitted.

As long as a plate can be embedded in the surface of one material and a pin can be inserted into the other material by using a connecting structure composed of a plate, hardware, or the like as in the invention of claim 1, any material can be used. The two members of the form can be connected. Therefore, two CLTs that intersect at right angles can be firmly connected, which also contributes to the spread of buildings that use CLT for the skeletal structure. In the past, it took a considerable amount of time and effort to erect another CLT in the middle portion of a horizontally laid CLT, but in the present invention, both can be easily connected.

In the present invention, since the plate is embedded in the recess of the one-sided material, it has sufficient strength against a shear load and is suitable for installing a structural material. Further, as the hardware, the conventional product can be used as it is, and only the plate needs to be newly manufactured. Therefore, the cost does not increase excessively when the present invention is carried out. In addition, it is possible to combine a plurality of hardware for one plate, and even if it is a large-scale connection structure, it is not necessary to use a dedicated hardware.

As in the invention of claim 2, the side peripheral surface of the plate and the inner peripheral surface of the recess are provided with meshing portions that are curved outward or inward so that the side peripheral surface of the plate and the inner peripheral surface of the recess are provided. The contact area is increased and a larger shear load can be transmitted.

In the perspective view showing the configuration example of the connecting structure according to the present invention, it is assumed that the wall-shaped other material is installed on the upper surface of the horizontally developed one material. In the perspective view showing the process of connecting the elements of FIG. 1, the state in which the hardware is fixed to one material is drawn in the upper part of the figure, and the state in which the other material is installed is drawn in the lower part of the figure. .. It is a perspective view which shows the case where the connecting structure of FIG. 1 is developed and the other material is installed on both the upper and lower sides of one material. In the perspective view showing the final form of FIG. 3, one material is sandwiched between the upper and lower other materials to form a cross-shaped vertical cross section.

FIG. 1 shows a configuration example of a connecting structure according to the present invention, and it is assumed that a wall-shaped other member 51 is installed on the upper surface of a horizontally deployed one member 41. Here, both the one material 41 and the other material 51 are plate materials having an appropriate thickness such as CLT, and the one material 41 is a vast plate material laid horizontally, but in FIG. 1, only a part thereof is used. It is cut out and drawn. The other material 51 is a plate material constituting the wall surface, but similarly, only a part thereof is cut out and drawn. The other material 51 is arranged in an intermediate portion away from the end portion of the one material 41, and the one material 41 and the other material 51 are adjacent to each other in a state where the cloves are turned upside down.

The plate 11 is obtained by cutting out a steel plate, but its side peripheral surface is not a simple straight line, but a part of the section is projected outward, and a meshing portion 14 is provided. In FIG. 1, there are meshing portions 14 at a total of six places, and the plate 11 has an appearance like a skewer dumpling. Further, a recess 42 is processed on the upper surface of the one-sided material 41 in order to embed the plate 11. The depth of the recess 42 is aligned with the thickness of the plate 11, and after embedding the plate 11, both surfaces are lined up without a step. Further, the recess 42 is processed with a meshing portion 44 as in the plate 11. The meshing portions 14, 44 of both the plate 11 and the recess 42 are fitted without gaps to regulate the displacement of the plate 11.

After embedding the plate 11 in the recess 42, in order to fix the plate 11 to the one-sided material 41, the nails 19 are inserted from the plate 11 toward the one-sided material 41. As the nails 19, various nails such as screw nails and flat head nails can be used, but in FIG. 1, screw nails are used to prevent pulling out. In order to insert the nails 19, the plate 11 is provided with nail holes 17 penetrating the front and back surfaces. In order to ensure strength, there are twelve nail holes 17 in total in FIG. 1, and in order to embed the heads of the nails 19, counterbore 18 having an enlarged inner diameter is provided at the entrance of each nail hole 17. Is provided.

The metal fitting 21 is formed by bending a steel plate into a U shape, is arranged on the upper surface of the plate 11, and has a role of installing the other material 51. In FIG. 1, the hardware 21 is used in a laid state, but in order to show its shape, a state in which the hardware 21 is upright is drawn in the upper left of FIG. The hardware 21 has a shape in which projecting plates 24 extend from the left and right ends of the elongated front plate 23, the front plate 23 and the projecting plate 24 are at right angles, and the front plate 23 is provided with three tenons 25.

The tenon 25 is a cylindrically extruded front plate 23, which is fitted into a tenon groove 15 provided in the center of the surface of the plate 11 to regulate the displacement of the hardware 21. A middle hole 26 is provided in the center of the tenon 25, and a female screw 16 is provided in the center of the bottom surface of the tenon groove 15. Both of the protruding plates 24 have the same shape, and are provided with a set of pin grooves 27 and three sets of pin holes 28.

The hardware 21 is placed on the upper surface of the plate 11 with the front plate 23 facing downward, and at that time, the tenon 25 is fitted into the tenon groove 15. Further, in order to fix the hardware 21 to the plate 11, a bolt 29 is inserted between the two protruding plates 24. The bolt 29 is inevitably arranged concentrically with the tenon 25, and the tip of the bolt 29 is screwed into the female screw 16 of the plate 11 through the middle hole 26. The head of the bolt 29 is housed inside the tenon 25 and does not protrude above the front plate 23, and does not interfere with the installation of the other member 51. In addition, the front plate 23 closes a part of the nail holes 17, but the counterbore 18 does not come into contact with the nails 19.

On the other hand, two rows of slits 54 are processed on the lower surface of the material 51 in order to insert the protruding plate 24. The slit 54 is not processed in the entire lower surface of the other material 51, but is limited to the section in which the hardware 21 is arranged. On the other side of the material 51, a side hole 57 that intersects the slit 54 is machined. The side holes 57 are arranged so as to be concentric with the pin grooves 27 and the pin holes 28 of the protruding plate 24, and at the time of construction, these are aligned concentrically, and then the pins 59 are inserted into the side holes 57. The pin 59 in FIG. 1 is a drift pin and is fixed to the inside of the other material 51 by friction. In addition, in order to embed the front plate 23, a step portion 53 in which the lower surface of the other material 51 is cut is provided between the two rows of slits 54.

FIG. 2 shows the process of connecting the elements of FIG. First, as shown in the upper part of FIG. 2, the plate 11 is embedded in the recess 42, and the nails 19 are further inserted to fix the plate 11 to the one-sided member 41. At this stage, the upper surfaces of both the plate 11 and the one-sided material 41 are lined up without a step. Further, the side peripheral surface of the plate 11 and the inner peripheral surface of the recess 42 are in close contact with each other in the entire area including the meshing portions 14 and 44, and the horizontal load is reliably transmitted between the plate 11 and the one-sided member 41. To. Then, after fixing the plate 11, the metal fitting 21 is placed on the upper surface thereof, and the metal fitting 21 is fixed to the plate 11 with the bolt 29.

As shown in the upper part of FIG. 2, after fixing the metal fitting 21 to the one material 41 via the plate 11, the lower surface of the other material 51 is placed on the upper surface of the one material 41, both are brought into surface contact, and further, the other material 51 Adjust the position so that the side hole 57 is concentrically aligned with the pin groove 27 and the pin hole 28 of the hardware 21, and finally insert the pin 59 into the side hole 57. When this series of operations is completed, as shown in the lower part of FIG. 2, the installation of the other material 51 is completed, and the one material 41 and the other material 51 are connected in a state where the cloves are turned upside down. The pin 59 penetrates the pin groove 27 and the pin hole 28, is firmly held by friction after being embedded, and does not fall off naturally.

As shown in FIG. 2, in the present invention, since the plate 11 is fixed by the nails 19, the metal fitting 21 can be fixed at any position on the surface of the one-sided member 41. Therefore, it is possible to connect two members at various parts such as the surface and end face of CLT, and it is extremely versatile. Further, in the present invention, only the end surface of the pin 59 is exposed to the outside after construction, and the plate 11 and the hardware 21 are completely covered up, which does not deteriorate the aesthetic appearance and is less likely to cause dew condensation. Note that FIG. 2 assumes the case where CLT is used for the skeleton structure of the building. One material 41 corresponds to the floor board and the other material 51 corresponds to the wall material. By firmly connecting both of them, the building is constructed. To ensure the rigidity of.

FIG. 3 shows a case where the connecting structure of FIG. 1 is developed and the other material 51 is installed on both the upper and lower surfaces of the one material 41. The connecting structure according to the present invention can be used in any place as long as the plate 11 and the hardware 21 can be arranged, and as shown in FIG. 3, the other material 51 can be installed on both the upper and lower sides of the horizontally laid one material 41. it can. In that case, recesses 42 are machined on both the upper and lower surfaces of the one-sided material 41, plates 11 are embedded in the individual recesses 42, the hardware 21 is attached thereto, and the protruding plate 24 of the hardware 21 is inserted into the slit 54 of the other material 51. In FIG. 3, the upper and lower recesses 42 are lined up on the vertical line without a step, and the upper and lower other members 51 form an integral inner wall. As shown in this figure, the female screw 16 of the plate 11 is not bottomed but penetrates the plate 11.

FIG. 4 shows the final form of FIG. 3, in which the one member 41 is sandwiched between the upper and lower other members 51 to form a cross-shaped vertical cross section. As shown in this figure, according to the present invention, the other material 51 can be easily installed even in the middle portion (a portion away from the end portion) of the one material 41, and has a suitable thickness in addition to the form shown in FIG. It can also be used on the end face of the member. Therefore, when CLT is used entirely as the skeletal structure of a building, the present invention can be used everywhere where two CLTs are adjacent to each other.

11 Plate 14 Engagement part 15 Mortise groove 16 Female screw 17 Nail hole 18 Counterbore 19 Nails 21 Hardware 23 Front plate 24 Protruding plate 25 Mortise 26 Middle hole 27 Pin groove 28 Pin hole 29 Bolt 41 One material 42 Recess 44 Engagement part 51 Other material 53 Step 54 Slit 57 Side hole 59 Pin

Claims (2)

It is a connecting structure for installing the other material (51) on the one material (41).
A plate (11) embedded in a recess (42) provided on the surface of the one-sided material (41), a metal fitting (21) in which a front plate (23) and a protruding plate (24) are arranged at right angles, and the plate ( The nails (19) that fix the 11) to the one material (41), the bolt (29) that integrates the plate (11) and the hardware (21), the other material (51) and the protruding plate. Using the pin (59) that integrates (24),
The plate (11) has a size such that the entire plate (11) is covered by contact with the other material (51).
The nails (19) are inserted into the surface of the plate (11) embedded in the recess (42) toward the one member (41).
The front plate (23) is in surface contact with the plate (11), and the bolt (29) is inserted from the front plate (23) toward the plate (11).
The protruding plate (24) is inserted into a slit (54) provided in the other material (51), and the pin (59) is connected to the protruding plate (24) from the surface of the other material (51). It is inserted so that it is orthogonal,
The front plate (23) is provided with a tenon (25) protruding toward the plate (11), and a tenon groove for fitting the tenon (25) is provided on the surface of the plate (11). (15) is provided,
By installing the other material (51) on the one material (41) via the integrated plate (11) and the hardware (21) , and by fitting the tenon (25) and the tenon groove (15). A connected structure characterized in that a shear load can be transmitted . The side peripheral surface of the plate (11) and the inner peripheral surface of the recess (42) are provided with meshing portions (14, 44) that are curved outward or inward, and the meshing portion (14, 44) is the plate. The connecting structure according to claim 1, wherein (11) and the recess (42) are fitted.

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