JP6132673B2 - Connecting structure and assembly used for it - Google Patents

Description

  The present invention relates to a connection structure for connecting members such as columns and beams in various wooden structures including a wooden building, and a bracket used therefor.

  The members such as columns and beams that make up the skeleton of a wooden building need to be firmly assembled so that they can withstand various external forces, and measures have been taken for a long time, such as inserting the horn into the horn hole. However, the tenon and the tenon hole have a problem of strength reduction due to a cross-sectional defect, and in recent years, members are often connected with various metal fittings interposed. The use of metal fittings is indispensable particularly in large wooden buildings using laminated wood with a large cross section.

  The following patent documents are mentioned as an example of the connection structure of members. Patent Document 1 discloses a connecting hardware that connects a vertical member and a cross member constituting a skeleton of a large wooden building. This connecting hardware consists of basic hardware attached to the vertical member and accessory hardware attached to the horizontal member. A taper is formed at one end of each hardware, and both hardware are fitted by fitting this into the receiving part of the other party. Adhere closely and connect the vertical and cross members. Furthermore, the basic hardware and accessory hardware are fixed to the vertical and horizontal members via lag screws, connecting rods and shafts. For this reason, the basic hardware and accessory hardware are not easily affected by the secular deformation of the vertical and horizontal members, and are excellent in strength.

  Patent Document 2 discloses a member fastening structure using a reinforcing shaft. The reinforcing shaft is a large-sized screw nail and is formed with ridges in almost the entire area. Therefore, when the reinforcing shaft is inserted so as to penetrate the boundary surface between the two members, the ridges are arranged so as to straddle the two members, and the two members are inevitably maintained in close contact with each other, and the influence of aging deformation of the members is also caused. It is difficult to receive, and furthermore, the tensile load can be widely dispersed through the ridges. However, from the viewpoint of workability and cost, the cross-sectional diameter of the reinforcing shaft cannot be made extremely thick, and the strength against shear load is limited. As a countermeasure, a hozo pipe is embedded so as to straddle the boundary surface of the two members separately from the reinforcing shaft.

JP 2007-132168 A JP 2011-32824 A

  When the connecting hardware disclosed in Patent Document 1 is actually used for a long period of time, at locations where the shear load acting on the connecting portion is large, the base metal is cracked into the member starting from the lag screw, connecting rod or shaft that fixes the basic hardware. May occur. Since the shear load is derived from the building's own weight, etc., it is an extremely large value, and since it continues to operate, there is a risk of exceeding the initial assumption. After that, measures such as increasing the number of lag screws may be taken. I'm taking it. However, such a countermeasure is difficult to apply when the cross section of the member is small, and also causes an increase in cost.

  In Patent Document 2, shear load transmission depends on a hozo pipe. Therefore, in order to withstand a greater shear load, it is necessary to increase the number of hoso pipes used and further increase the diameter of the hoso pipes. However, when machining a pipe hole for embedding a hozo pipe, there is often a margin in the inner diameter in consideration of workability and errors. As a result, the contact portion between the hozo-pipe and the pipe hole is not a planar shape but a linear shape, and the load is concentrated in a limited range, and there is a possibility that the member may be cracked.

  As described above, the method of transmitting the shear load by embedding the shaft or pipe at the place where the two members are connected has various restrictions such as workability, processing accuracy, and cost, and may not exhibit sufficient effects. Many. Therefore, new measures that do not depend on these should be considered. In addition, on the premise that sufficient strength can be secured, it is necessary to respond to a demand for cost reduction of a building with a simple configuration as much as possible.

  The present invention was developed on the basis of such circumstances, and has excellent strength against shear load, can prevent cracking of members, and can be connected to meet demands for cost reduction of buildings by having a simple configuration. The purpose is to provide the structure and the fittings used for it.

  The invention according to claim 1 for solving the above-mentioned problems is a connecting structure of one rod-like material and the other material, wherein the one material and the other material are pulled together, and the one An assembled metal fitting disposed on a boundary surface between the material and the other material, the tensile shaft is inserted so as to penetrate the boundary surface between the one material and the other material, and the assembled metal metal is connected to the one material A receiving piece attached to the other material side and a mounting piece attached to the other material side, and the upper surface of the receiving piece and the lower surface of the mounting piece are in contact with each other so that the other material is supported by the one material, and the receiving piece And the mounting piece is fixed to the one material or the other material by a screw nail, and the screw nail is inserted obliquely with respect to the boundary surface on both the receiving piece side and the mounting piece side. It is a connected structure.

  In various wooden structures including wooden construction, the present invention connects two members by using a tension shaft and a braided metal, and one of the two members fixed to the ground is referred to as one material. The one that is supported imaginarily by this one material is referred to as the other material. The other material is arranged in a substantially horizontal direction. Further, the two members are in the form of a wooden bar containing laminated material, and if the side surface of one material and the end surface of the other material are butted together, a T-shaped or L-shaped connecting portion is formed. In addition, the end surfaces of the one material and the other material can be abutted linearly.

  The boundary surface refers to a surface where one material and the other material face each other in the connecting portion of the two members. If the side surface of one material and the end surface of the other material are connected in a T-shape, the opposing side surface of the one material and the end surface of the other material become the boundary surface. Moreover, when connecting the end surfaces of two members, each end surface becomes a boundary surface. However, after the connection, the opposing boundary surfaces do not always contact each other, and the assembled metal fitting may be sandwiched between them. Further, a step may be provided on the boundary surface to embed the assembled metal fitting.

  The tension shaft is inserted so as to penetrate the one material and the other material, and the two members are pulled together to be integrated, and also carries the transmission of a tensile load and a bending moment acting between the two members. Therefore, two or more sets of tension shafts are used. Specific examples of the tension shaft include a headed bolt, a stud bolt, and a long screw nail, and the arrangement thereof is the same as that of the conventional connection structure. Further, the tensile axis is inserted in a direction substantially perpendicular to the boundary surface. Moreover, in order to insert a tension shaft, a large-diameter lag screw or the like may be embedded in the member. The lag screw is provided with a medium hole for inserting the tension shaft and a female screw to be screwed with the tension shaft.

  The braided metal supports the other material in an aerial manner and also carries a transmission of a shear load acting between the two members. The assembly is literally composed of two elements, a receiving piece and a mounting piece. The receiving piece is attached below the boundary surface on the one material side, and the mounting piece is attached above the boundary surface on the other material side. Further, when the two members are connected, the placing piece is disposed on the receiving piece, the upper surface of the receiving piece and the lower surface of the placing piece are in close contact, and the shear load is transmitted. The contact surface between the receiving piece and the mounting piece (the lower surface and the upper surface) can be a simple horizontal surface, but it is preferable to provide an inclination or a step to attract the two members.

  The receiving piece and the mounting piece are approximately the same size in consideration of balance. For this reason, the receiving piece and the mounting piece can have the same shape, and only one of them can be turned upside down and incorporated into the connecting portion. In addition, the assembled metal fitting is preferably sized so as not to protrude above and below the boundary surface, and further, in order to improve fire resistance and appearance, an accommodation groove can be formed in the center of the boundary surface and embedded therein. However, it is necessary to prevent interference with the tension shaft.

  Both the receiving piece and the mounting piece are attached to one material or the other material using screw nails. The screw nails are not inserted simply in a direction perpendicular to the boundary surface on either the receiving piece side or the loading piece side, but are inserted obliquely with respect to the boundary surface. Further, it is not necessarily limited to the oblique direction, and is limited to a direction in which a tensile load acts on the screw nail by a shear load acting between the one material and the other material (a downward load acting on the other material). The screw nails are premised on the use of a plurality of screw nails from the viewpoint of strength and safety, but the specific arrangement may be freely determined.

  In this manner, by inserting the screw nail to which the receiving piece or the mounting piece is attached in the oblique direction, a tensile load acts on the screw nail due to the shear load acting between the one material and the other material. Since this tensile load is distributed over a wide range of one material and the other material by the thread of the screw nail, cracking of the member due to load concentration can be suppressed. Furthermore, by adjusting the number and length of screw nails, the load can be distributed over a wider range, and it is easy to ensure safety even under harsh conditions. At the time of construction, for positioning the receiving piece and the mounting piece, nails may be driven in a direction perpendicular to the boundary surface separately from the screw nails.

  The invention according to claim 2 relates to a single unit of the bracket that realizes the invention according to claim 1, and in order to connect the rod-shaped one material and the other material, the boundary surface between the one material and the other material is used. The assembled metal fitting is composed of a receiving piece attached to the one material side and a mounting piece attached to the other material side, and the upper surface of the receiving piece and the lower surface of the mounting piece are in contact with each other. The other material is supported by the one material, and the receiving piece and the mounting piece are fixed to the one material or the other material by screw nails, and the receiving piece and the mounting piece are inserted to insert the screw nails. The guide hole formed in the bracket extends in an oblique direction with respect to the boundary surface.

  As described above, the bracket is composed of a receiving piece attached to one material side and a mounting piece attached to the other material side. By placing the mounting piece on the receiving piece, a shear load (acts on the other material). Transmit downward load). Furthermore, the screw nails for attaching the receiving piece and the mounting piece are inserted in an oblique direction with respect to the boundary surface. Therefore, a guide hole for inserting a screw nail is formed in the receiving piece and the mounting piece in an oblique direction.

  As in the first aspect of the present invention, the screw nail for attaching the receiving piece and the mounting piece constituting the assembled metal fitting by connecting the two members of the one material and the other material with the tension shaft and the assembled metal fitting, By inserting in an oblique direction with respect to the boundary surface, a tensile load is generated on the screw nail due to a shear load acting on the connecting portion. Since this tensile load is distributed over a wide range via the screw thread formed on the side peripheral surface of the screw nail, concentration of the load near the boundary surface is avoided, and cracking of the member can be suppressed.

  Moreover, since the general purpose bolt etc. can be diverted and a special part is not used for a tension shaft, the cost at the time of construction can be controlled. Furthermore, when manufacturing the assembled metal fitting, it can be handled only by the steel material cutting process, and does not require a welding process. Therefore, the assembled metal fittings can be supplied at low cost. Thus, this invention is excellent in intensity | strength by using together a tension | pulling axis | shaft and a metal fitting, and also can suppress manufacturing cost and contributes to the spread of a safe building.

  As in the invention described in claim 2, the assembled metal fitting is composed of a receiving piece and a mounting piece, and a guide hole for inserting a screw nail is formed in each of the receiving piece and the mounting piece in an oblique direction, thereby connecting A tensile load is generated on the screw nail due to the shear load acting on the part. Since this tensile load is distributed over a wide range via the screw thread formed on the side peripheral surface of the screw nail, concentration of the load near the boundary surface is avoided, and cracking of the member can be suppressed.

It is a perspective view which shows the specific example of the connection structure by this invention, and the assembled metal fitting used therewith. It is the perspective view which looked at the one material of FIG. 1 from the other side. It is a perspective view of the state just before connecting the one material and the other material of FIG. 1, the lag screw is embedded, and the receiving piece and the mounting piece are also attached. It is a perspective view of the state which connected one material and the other material of FIG. It is a longitudinal cross-sectional view of the center part of FIG. It is a perspective view which shows the connection structure different from FIG. It is a perspective view which shows the state just before connecting one material and the other material of FIG. It is the perspective view and longitudinal cross-sectional view of the state which connected the one material and other material of FIG. It is a perspective view which shows the case where the end surfaces of one material and the other material are faced | matched and connected linearly. It is the perspective view and longitudinal cross-sectional view of the state which connected one material and the other material of FIG. It is a perspective view which shows the connection structure different from the previous figure. It is a perspective view which shows the step which inserts a screw nail in the one material of FIG. 11, and the other material.

  FIG. 1 shows a specific example of a connecting structure according to the present invention and a bracket 11 used therefor. In this figure, it is assumed that the one material 41 and the other material 51 constituting the skeleton of the wooden building are connected in an L shape, and the one material 41 corresponding to the pillar extends in the vertical direction and the other material corresponding to the beam. The material 51 extends in the horizontal direction. Furthermore, the one material 41 and the other material 51 are attracted by the tension shaft and maintain a close contact state. The tension shaft is a bolt 25 with a head. In order to receive the reaction force acting on the bolt 25, lag screws 31 and 32 are embedded in the one material 41 and the other material 51.

  The lag screws 31 and 32 are cylindrical metal rods, and are formed with spirally extending ridges 35 on the side peripheral surface, and a hexagonal shape at one end to hang a tool such as a spanner during embedding. A head 34 is formed. Further, the lag screw 31 embedded in the one material 41 is formed with an inner hole 36 for inserting the shaft portion of the bolt 25. On the other hand, a female screw 37 that is screwed into the tip of the bolt 25 is formed at the center of the head 34 of the lag screw 32 embedded in the other material 51. In addition, although the inside hole 36 has penetrated both ends, the internal thread 37 has a bottom.

  In order to embed the lag screws 31 and 32, round holes 44 and 54 are processed in the one material 41 and the other material 51. The round hole 44 on the one material 41 side and the round hole 54 on the other material 51 side are aligned concentrically, and the inner diameters of the round holes 44 and 54 are substantially the same as the outer diameters of the lag screws 31 and 32 (excluding the ridges 35). Equally, only the ridge 35 bites into the back of the round holes 44 and 54. When the embedding is finished, friction is generated in the entire area of the ridge 35, the lag screws 31, 32 are firmly held, and there is also an effect of preventing the one material 41 and the other material 51 from cracking.

  The assembled metal fitting 11 includes a receiving piece 15 and a mounting piece 17 obtained by finishing a steel material into a predetermined shape. The receiving piece 15 and the mounting piece 17 have the same shape, and only one of them is turned upside down to separate the roles. Further, the upper surface 16 of the receiving piece 15 is an inclined surface toward the lower left in the figure, and similarly, the lower surface 18 of the mounting piece 17 is an inclined surface toward the lower left in the figure. Therefore, when the lower surface 18 of the mounting piece 17 is brought into contact with the upper surface 16 of the receiving piece 15, the mounting piece 17 can move to the left side of the drawing by its own weight, and the other material 51 can be drawn toward the one material 41.

  The assembled metal 11 has a height that can be accommodated between the upper and lower bolts 25, and the assembled metal 11 and the bolts 25 do not come into contact with each other. Moreover, it is preferable to embed the assembled metal fitting 11 in the one material 41 and the other material 51 as much as possible from the viewpoint of improving the appearance and fire resistance and preventing condensation. Therefore, a housing groove 42 for housing the assembled metal fitting 11 is processed on the side surface of the one material 41. Therefore, outside the housing groove 42, the one material 41 and the other material 51 are in direct contact with each other to cover the assembled metal fitting 11. In addition, the accommodation groove 42 is processed using the upper end of the one material 41 as a base point, and one end of the upper round hole 44 is located on the inner surface of the accommodation groove 42.

  In the connection part of the one material 41 and the other material 51, the surfaces facing the mating member are defined as boundary surfaces 43 and 53. In this figure, the side surface of the one material 41 and the end surface of the other material 51 are opposed to each other, the entire end surface of the other material 51 is the boundary surface 53, and the end surface of the other material 51 is opposed to the side surface of the one material 41. The range to be used also becomes the boundary surface 43. Note that the boundary surface 43 of the one material 41 includes the back surface of the accommodation groove 42 in addition to the range that actually contacts the other material 51.

  The receiving piece 15 and the mounting piece 17 are attached to the one member 41 or the other member 51 with the screw nails 24. In order to insert the screw nails 24, guide holes 19 are formed on the side surfaces of the receiving piece 15 and the mounting piece 17. The guide hole 19 has an inner diameter that cannot pass through the head of the screw nail 24, and a counterbore 20 having an enlarged diameter is formed at one end thereof to accommodate the head of the screw nail 24. Further, the guide hole 19 extends in an oblique direction with respect to the boundary surfaces 43 and 53. Therefore, when a downward load is applied to the other material 51, a tensile load is applied to the screw nail 24 in addition to a shear load. This tensile load is received by the one material 41 and the other material 51 through the thread of the screw nail 24.

  In order to increase the tensile load acting on the screw nail 24, the intersection angle between the boundary surfaces 43 and 53 and the guide hole 19 may be made as small as possible. However, since there are various restrictions such as the thickness of the receiving piece 15 and the mounting piece 17 and workability during construction, the intersection angle is often in the range of 30 to 60 degrees. Further, from the viewpoint of distributing the load, as many screw nails 24 as possible should be used. In this figure, both the receiving piece 15 and the mounting piece 17 are attached by three screw nails 24.

  FIG. 2 is a view of the one material 41 of FIG. 1 as viewed from the opposite side. On the other hand, a receiving groove 15 extending in the vertical direction is processed on the side surface of the material 41 in order to embed the receiving piece 15 and the like. Further, in order to embed the lag screw 31, round holes 44 are machined in two places at the top and bottom. Note that one end of the upper round hole 44 is located on the inner surface of the accommodation groove 42. When the lag screw 31 is embedded, first, the opposite side of the head 34 is inserted into the entrance of the round hole 44, and then a tool such as a spanner is applied to the head 34 to rotate it. Embedding proceeds gradually.

  When the lag screw 31 and the receiving piece 15 are assembled, only both ends of the lag screw 31 are exposed to the outside as depicted in the lower right of FIG. Note that the end surface (the head 34 side) of the lower lag screw 31 has no step with the side surface of the one material 41. On the other hand, the vicinity of the head 34 of the upper lag screw 31 protrudes into the accommodation groove 42. In addition, the receiving piece 15 is fitted into the receiving groove 42 without a gap, and is also in contact with the lower end surface of the receiving groove 42. The screw nail 24 to which the receiving piece 15 is attached is embedded in the guide hole 19 or the counterbore 20 and there is no portion protruding from the surface of the receiving piece 15.

  FIG. 3 shows a state immediately before the one material 41 and the other material 51 of FIG. 1 are connected. Lug screws 31 and 32 are embedded in both the one material 41 and the other material 51, and the receiving piece 15 is attached below the accommodation groove 42 of the one material 41. The mounting piece 17 is attached. Then, when the other material 51 is lifted, the lower surface 18 of the mounting piece 17 is received and brought into contact with the upper surface 16 of the piece 15, and the other material 51 is continuously moved freely, the mounting piece 17 is moved by the inclination of the upper surface 16 and the lower surface 18. The side of the one material 41 and the end surface of the other material 51 are brought into contact with each other to the back of the housing groove 42. Thereafter, when the bolt 25 is inserted into the inner hole 36 of the lag screw 31 and tightened, the connection of the one material 41 and the other material 51 is completed.

  FIG. 4 shows a state in which one material 41 and the other material 51 of FIG. 1 are connected. When the bolt 25 is inserted into the lug screw 31 exposed on the side surface of the one material 41 and tightened, the one material 41 and the other material 51 are brought into close contact to form an L-shaped connecting portion, and the other material 51 is supported in an aerial manner. Is done. The mounting piece 17 fitted in the receiving groove 42 is located immediately above the receiving piece 15, and transmits a shear load (downward load acting on the other member 51) from the mounting piece 17 to the receiving piece 15. can do. Note that most of the assembled metal member 11 and the lag screws 31 and 32 are embedded in the one material 41 and the other material 51, and the lag screw 31 in the head of the bolt 25 and the housing groove 42 is exposed to the outside. And so on. Therefore, the appearance is improved, and it is excellent in terms of fire resistance and prevention of condensation.

  FIG. 5 is a longitudinal section of the central portion of FIG. Two sets of lag screws 31 and 32 are arranged vertically, and the end surfaces of the left and right lag screws 31 and 32 are in contact with each other. Therefore, the compressive load acting between the one material 41 and the other material 51 is transmitted through the lag screws 31 and 32, and the connection portion can be prevented from being depressed. Further, the tensile load acting between the one material 41 and the other material 51 is received by the bolt 25. Then, the load received by the bolt 25 is transmitted to the one material 41 and the other material 51 via the ridges 35 of the lag screws 31 and 32.

  The receiving piece 15 is attached to the one member 41 with a screw nail 24, and the mounting piece 17 is attached to the other member 51 with a screw nail 24, and a shear load is transmitted by contact between the receiving piece 15 and the mounting piece 17. Each of the screw nails 24 extends not in the horizontal direction but in the direction connecting the lower right and upper left in the figure. Therefore, when a downward load is applied to the other material 51, a tensile load as well as a shear load is applied to the screw nail 24. Since the thickness of the screw nail 24 is limited, the strength against the shear load is also limited, but the strength is easily exhibited against the tensile load. In addition, the thread of the screw nail 24 bites into the one material 41 and the other material 51 in a wide range, and the load is not concentrated near the boundary surfaces 43 and 53, so that the crack of the one material 41 and the other material 51 can be suppressed.

  In order to increase the tensile load acting on the screw nail 24, it is preferable to insert the screw nail 24 in the vertical direction as much as possible. However, it is necessary to consider the thickness of the receiving piece 15 and the mounting piece 17 and workability during construction, and the intersection angle between the boundary surfaces 43 and 53 and the screw nails 24 is often in the range of 30 to 60 degrees. The head of the screw nail 24 is embedded in the counterbore 20 and does not affect the connection work. In addition, the receiving piece 15 is in contact with the lower end surface of the receiving groove 42. Therefore, the downward load acting on the receiving piece 15 is directly transmitted to the one material 41, which is advantageous in terms of strength.

  FIG. 6 shows a connection structure different from that in FIG. Here again, connecting the one material 41 and the other material 51 in the L-shape is the same. However, in addition to using the long screw 27 as the tension shaft, the shape of the assembled metal 12 is also different, and the accommodation groove 52 is processed in the center of the end surface of the other material 51. The long large screw 27 plays a role of pulling the one material 41 and the other material 51, and is a large-sized screw nail, and a screw thread 26 is formed in almost the whole area except the vicinity of the head. Therefore, when the insertion is finished, the screw thread 26 is disposed across both the one material 41 and the other material 51. Prior to inserting the long screw 27, pilot holes 45 and 55 are processed in the one material 41 and the other material 51.

  The assembled metal member 12 is composed of a receiving piece 15 and a mounting piece 17, both of which have the same shape, and only one of them is turned upside down to separate roles. Further, the upper surface 16 of the receiving piece 15 and the lower surface 18 of the mounting piece 17 are composed of uneven horizontal surfaces and steep slopes connecting them, and the other material 51 can be drawn toward the one material 41. Furthermore, triangular peaks 21 and valleys 23 are formed in the center of the upper surface 16. Therefore, when the receiving piece 15 and the mounting piece 17 are brought into contact with each other, the respective peak portions 21 are fitted into the counterpart trough portions 23, and the positions in the width direction can be naturally aligned.

  The receiving piece 15 and the mounting piece 17 are sized to reach the entire upper and lower portions of the accommodation groove 52. For this reason, both the receiving piece 15 and the mounting piece 17 are formed with a through hole 22 for allowing the long screw 27 to pass therethrough. In addition, the guide holes 19 for inserting the screw nails 24 are formed at two left and right positions away from the center in consideration of balance and the like. At the time of construction, the receiving piece 15 and the mounting piece 17 are attached with the screw nails 24, and then the one material 41 and the other material 51 are drawn together with the receiving piece 15 and the mounting piece 17, and finally both are integrated with the long screw 27.

  FIG. 7 shows a state immediately before the one material 41 and the other material 51 of FIG. 6 are connected. The receiving piece 15 is attached to one material 41, and the mounting piece 17 is attached to the accommodation groove 52 of the other material 51. Then, when the upper surface 16 of the receiving piece 15 and the lower surface 18 of the mounting piece 17 are brought into contact with each other, each mountain portion 21 fits into the other trough portion 23 and the one material 41 and the other material 51 are brought into close contact with each other. Are lined up without steps. However, at this stage, the lifting of the other material 51 cannot be restricted, and the bending moment cannot be resisted. Therefore, when the long screw 27 is inserted from the pilot hole 45 of the one material 41, the one material 41 and the other material 51 are completely integrated.

  FIG. 8 shows a state in which the one material 41 and the other material 51 of FIG. 6 are connected. The long screw 27 penetrates the through hole 22 of the receiving piece 15 and the mounting piece 17 and is inserted into the other material 51 from one material 41, and the screw thread 26 is disposed across the one material 41 and the other material 51. Yes. Therefore, even when the head of the long screw 27 is loosened due to the aging deformation of the one material 41, the connection between the one material 41 and the other material 51 is not loosened. Further, the screw nails 24 to which the receiving pieces 15 and the mounting pieces 17 are attached are inserted in an oblique direction, and a downward load acting on the other material 51 generates an axial force in the tensile direction. In addition, in the longitudinal cross section of FIG. 8, both the screw nail 24 and the long screw 27 are drawn, but actually, they are not arranged in the same cross section.

  FIG. 9 shows a case where the end surfaces of the one material 41 and the other material 51 are butted and connected in a straight line. The assembled metal 13 used here is the same size as the boundary surfaces 43 and 53 of the one material 41 and the other material 51, and considering the connection work, the upper surface 16 of the receiving piece 15 and the lower surface 18 of the mounting piece 17 are A simple horizontal plane. Further, a stud bolt 29 is used for the tension shaft that draws the one material 41 and the other material 51 and is inserted so as to penetrate the boundary surfaces 43 and 53. In addition, the lag screw 31 having the same shape is embedded in both the one material 41 and the other material 51 in order to prevent the boundary surfaces 43 and 53 from sinking. The lag screw 31 is formed with an inner hole 36 penetrating both ends so that the stud bolt 29 can be inserted therein.

  In order to embed the lag screw 31, the round holes 44 and 54 are processed in both the one material 41 and the other material 51 with the boundary surfaces 43 and 53 as a base point. Further, window holes 46 and 56 are formed in the upper and lower surfaces of the one material 41 and the other material 51 so that the nut 28 can be screwed to both ends of the stud bolt 29. The window holes 46 and 56 inevitably intersect with the inner part of the round holes 44 and 54. Further, the guide holes 19 of the receiving piece 15 and the mounting piece 17 are difficult to arrange side by side in the vertical direction, and three guide holes 19 are arranged on the left and right sides. In addition, in order to bring the end faces of the lag screws 31 on the one material 41 side and the other material 51 side into contact with each other, both the receiving piece 15 and the mounting piece 17 are provided with large-diameter holes 22.

  FIG. 10 shows a state where one material 41 and the other material 51 of FIG. 9 are connected. The one material 41 and the other material 51 are attracted by the stud bolt 29, and both are completely integrated. The assembled metal 13 is sandwiched between one material 41 and the other material 51. Further, the screw nail 24 to which the receiving piece 15 and the mounting piece 17 are attached is inserted in an oblique direction, and a downward load acting on the other material 51 generates an axial force in the tensile direction.

  FIG. 11 shows a connection structure different from the previous drawings. The specific configuration of the tension shaft and the assembled metal is free, and without using the lag screws 31 and 32 disclosed so far, as shown in FIG. The material 51 can also be connected. The bolt 25 is inserted from the prepared hole 45 processed in the side surface of the one material 41, and the tip of the bolt 25 reaches the window hole 56 processed in the other material 51. Further, when the nut 28 is inserted from the window hole 56 and screwed into the bolt 25 and tightened, the one material 41 and the other material 51 are integrated. In order to prevent the bolt 25 head and the nut 28 from sinking, a large-diameter washer 38 is incorporated adjacent to them.

  The receiving piece 15 and the mounting piece 17 are attached to the one material 41 and the other material 51 by the anchoring screw 64 in addition to the screw nails 24. The anchoring screw 64 plays a role of fixing the receiving piece 15 and the mounting piece 17 at an accurate position, and is inserted at a right angle with respect to the boundary surfaces 43 and 53. A tip hole 62 is formed in the receiving piece 15 and the mounting piece 17 in order to insert the anchor screw 64, and a round groove 63 is formed at the entrance of the tip hole 62 to accommodate the head of the anchor screw 64. It is. At the time of construction, first, the receiving piece 15 and the mounting piece 17 are temporarily placed at predetermined positions, and then the mooring screw 64 is inserted to make the receiving piece 15 and the mounting piece 17 immovable, and then the screw nails 24 are inclined. Insert in the direction.

  FIG. 12 shows a stage where the screw nails 24 are inserted into the one member 41 and the other member 51 of FIG. As shown in this figure, the workability when inserting the screw nail 24 by inserting the screw nail 24 after attaching the receiving piece 15 and the mounting piece 17 to the one member 41 or the other member 51 using the anchoring screw 64. In addition, the positional accuracy of the receiving piece 15 and the mounting piece 17 is improved.

DESCRIPTION OF SYMBOLS 11 Assembly metal 12 Assembly metal 13 Assembly metal 14 Assembly metal 15 Receiving piece 16 Upper surface 17 Mounting piece 18 Lower surface 19 Guide hole 20 Counterbore 21 Mountain part 22 Exit hole 23 Valley part 24 Screw nail 25 Bolt (tensile shaft)
26 Thread 27 Long screw (Tensile shaft)
28 Nut 29 Stud Bolt (Tensile shaft)
31 Lag screw (with medium hole)
32 Lag screw (with internal thread)
34 head 35 ridge 36 medium hole 37 female screw 38 washer 41 one material 42 receiving groove 43 boundary surface 44 round hole 45 pilot hole 46 window hole 51 other material 52 receiving groove 53 boundary surface 54 round hole 55 pilot hole 56 window hole 62 Tip hole 63 Round groove 64 Mooring screw

Claims (2)

Each is a connecting structure of the rod-shaped one material (41) and the other material (51),
A tension shaft (25 or 27 or 29) for pulling the one material (41) and the other material (51);
An assembled metal fitting (11 or 12 or 13 or 14) disposed on a boundary surface (43, 53) between the one material (41) and the other material (51);
Use
The tension shaft (25 or 27 or 29) is inserted so as to penetrate the boundary surface (43, 53) between the one material (41) and the other material (51),
The assembled metal fitting (11 or 12 or 13 or 14) comprises a receiving piece (15) attached to the one material (41) side and a mounting piece (17) attached to the other material (51) side,
By contacting the upper surface (16) of the receiving piece (15) and the lower surface (18) of the mounting piece (17), the other material (51) is supported by the one material (41),
The receiving piece (15) and the mounting piece (17) are fixed to the one material (41) or the other material (51) by a screw nail (24), and the screw nail (24) is fixed to the receiving piece. (15) The connecting structure, wherein both the side and the mounting piece (17) side are inserted in an oblique direction with respect to the boundary surface (43, 53). In either case, in order to connect the rod-shaped one material (41) and the other material (51), the assembled metal fitting (11 or 11) disposed on the boundary surface (43, 53) between the one material (41) and the other material (51) 12 or 13 or 14)
The assembled metal fitting (11 or 12 or 13 or 14) includes a receiving piece (15) attached to the one material (41) side and a mounting piece (17) attached to the other material (51) side,
By contacting the upper surface (16) of the receiving piece (15) and the lower surface (18) of the mounting piece (17), the other material (51) is supported by the one material (41),
The receiving piece (15) and the mounting piece (17) are fixed to the one material (41) or the other material (51) by a screw nail (24) and are inserted to insert the screw nail (24). The metal fitting characterized by the guide hole (19) formed in the piece (15) and the mounting piece (17) extending in an oblique direction with respect to the boundary surfaces (43, 53).

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