JP4628212B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener used when a plurality of members are integrated in a wooden building.

  Wooden buildings are highly flexible in design and have many advantages such as durability and cost. In recent years, countermeasures have been taken against fires and earthquakes. Yes. In addition, restaurants and other stores have larger buildings than houses, and it is necessary to secure a large indoor space. Buildings using reinforced concrete are common, but aim to improve appeal to customers. In some cases, wooden construction is used. However, the store needs to secure a large space as mentioned above, and is also characterized by frequent large-scale renovations, and in wooden constructions where pillars need to be erected at narrow intervals, these points are There are many cases where this is not possible.

When it is desired to secure a wide indoor space in a store with a wooden structure, it is desirable to increase the strength of the pillars and beams that form the skeleton of the building and widen the distance between the pillars. In this case, a method is often used in which a gate-shaped frame having a structure in which both ends of the beam are supported by columns are arranged at equal intervals. Since the length of the beam used here is longer than that of general residential applications, its cross-sectional area also increases, and it is necessary to ensure sufficient rigidity at the joint with the column, as in the case of a rigid frame structure with steel frames. There is. Therefore, if the columns and beams are joined together with a tenon, metal fittings, etc., just like a conventional wooden building, the strength will be insufficient, and reinforcing metal fittings, braces, fire-fired parts, etc. may be provided separately. In addition, the following documents exist about the portal frame in wooden construction.
JP 2004-316292 A

  When using the portal frame as described above, the pillars and beams are processed into a predetermined shape at the factory in advance and then transported to the site. However, when integrating the pillars and beams, safety and other points Because it is difficult to work at high places, after the pillar is united with the beam in a state of being tilted to the ground, it is lifted by a crane and installed at a predetermined position. Therefore, when assembling the portal frame, a work space where columns and beams can be placed is necessary, but this space cannot be secured and the road is often used temporarily, which hinders the passage of people and cars. is there. In addition, when installing the portal frame, it is inevitable that some dimensional error will occur at the joint with the adjacent members such as the base, but the rigidly assembled portal frame is not flexible enough to reduce this dimensional error. It may not be absorbed and work may be difficult. Furthermore, in order to shorten the use time of the crane, it is necessary to assemble all the portal frames and then install them all at once. Since the two steps proceed in stages, the overall work time tends to be extended.

  In addition to skeletal structures such as columns and beams, general buildings also require incidental structures such as talc and joists to build eaves and floors. There are also many. Therefore, if another member extending in the direction opposite to the beam is connected at the connecting portion between the column and the beam of the portal frame, the convenience can be further improved if the member can be configured in the shape of a “choose”. However, this cic-shaped connecting part needs to be processed into a large number of holes and side grooves on a member such as a pillar for embedding metal fittings, etc. There is a problem in terms of cost and time due to an increase in the work for machining and installation.

  The present invention was developed based on this situation, and it is not necessary to secure a work space on site when constructing a portal frame that combines pillars and beams in wooden construction, and the work time can be shortened. Furthermore, another object is combined with the coupling portion between the column and the beam, and the object is to provide a fastener capable of easily constructing a letter-shaped coupling portion.

  The invention according to claim 1 for solving the above-described problem is a fastening portion in which an end face of a large beam is coupled to one side surface of a column and a small beam is coupled to a side surface opposed to the large beam, respectively. Embedded between the column and the large beam, the embedded shaft inserted into the round hole formed in the center, the central tube inserted into the through-hole penetrating both sides of the column, the connecting rod inserted into the central tube The metal plate, the metal fitting interposed between the column and the small beam, the bolt for fixing the metal fitting to the connecting rod, and the side of the small beam are driven into the metal beam. A drift pin for integration, the embedded shaft is formed with a fixing means for integration with the girder, and an internal thread is formed on the end surface, and the central tube is a medium hole for inserting the connecting rod A spiral slat for integration with the pillar is formed on the side peripheral surface, and It has a disk-like flange surface in the end surface or inside hole on the beam side, and the connecting rod extends from the head, a head that is restricted from moving in the axial direction by the flange surface. And a female screw for screwing with the bolt at the top of the head, and a male screw for screwing with the female screw of the embedded shaft at the tip of the leg. The plate has a drill hole for allowing the leg of the connecting rod to pass therethrough, and has a locking piece for contacting the bottom surface of the large beam or the top surface of the column, Is a U-shape consisting of a front plate and a pair of side plates extending at right angles from both ends of the front plate and inserted into the beam, and the front plate has a holding hole for allowing the bolt to pass therethrough. And the side plate is provided with a side hole for allowing the drift pin to pass therethrough. A connecting rod that is inserted into the bore of the central tube and screwed into the female screw of the buried shaft, and a drift pin that is fixed to the column by a bolt that is screwed into the female screw of the connecting rod and is driven into the small beam The fastener is characterized in that a large beam and a small beam are coupled to a column by a metal fitting.

  The pillar, the large beam, and the small beam are members integrated according to the present invention, and the pillar is a member located on both sides of the gate-shaped frame, and is erected vertically from a foundation such as a base. The large beam is a member that connects the pair of columns horizontally, and the small beam is an additional member that is coupled to the gate-shaped frame, and is arranged to face the large beam. The present invention is applied to the case where the end face of the large beam is brought into contact with one side face of the column and the end face of the small beam is brought into contact with the side face facing the pillar to constitute a “choose” -shaped fastening portion. Names such as columns, large beams, and small beams are given for convenience, and may be called by other names depending on the usage situation, and the small beams are often equivalent to talc and joists.

  The embedded shaft has a round bar shape, and is inserted into a circular hole with a circular cross-section to be processed from the end face of the large beam. It is preferable that the diameter of the embedded shaft and the round hole be equal to each other so that no gap is generated between them. Further, the buried shaft needs to be firmly integrated with the girder after being inserted into the girder. Therefore, some fixing means is required. Specific examples of the fixing means are described in the following claims. The female screw is provided on the end face that is visible from the outside when the embedded shaft is embedded in the girder, and is formed along the central axis.

  The central tube is inserted into a through-hole having a circular cross section passing through both side surfaces of the column, and an inner hole passes through the inside, and its outer diameter is equal to the through-hole. When the column and the beam are brought into contact with each other, this through hole must be aligned with the round hole of the beam. In addition, the central tube must be firmly integrated with the pillar after being inserted into the through hole. Therefore, a wing plate that protrudes in the radial direction is formed in a spiral shape on the side peripheral surface. The central tube is fixed by biting into In addition, the flange surface points to a disk-shaped flat portion extending in the radial direction, which is formed by changing the diameter of the inner hole, and has a role of restraining the head of the connecting rod. When the outer diameter of the central tube is thin and it is difficult to form the flange surface inside, the end surface of the central tube can be used as the flange surface.

  The connecting rod is inserted into the bore of the central tube, has a shape similar to that of a general bolt, a head having a large and short cross section, and a leg having a circular cross section extending concentrically with the head. The head needs to be shaped so as to be able to come into contact with the flange surface of the central tube, and the leg needs to have a diameter that can be inserted through the bore of the central tube. Since the top part of the head is screwed with the bolt, a female screw is formed along the central axis, and the leg part is screwed with the female screw of the embedded shaft. Male threads are formed. In addition, the connection part of a head part and a leg part forms the disk-shaped plane extended in a radial direction, This can contact the flange surface of a center pipe | tube, and can restrain the movement to the axial direction of a connecting rod. Therefore, when the connecting rod is inserted into the center hole of the central tube and the leg portion is screwed into the female screw of the embedded shaft, the embedded shaft is attracted to the column.

  The plate is a metal plate sandwiched between the side surface of the column and the end surface of the large beam, and is provided with a drill hole for allowing the leg portion of the connecting rod to pass therethrough. Since this drill hole has a role of restraining the bending of the leg portion, the diameter thereof needs to be slightly larger than that of the leg portion. In addition, the plate is not a simple flat plate, but includes a locking piece formed by bending one end side at a right angle, and has an L shape when viewed from the side. The plate is fixed to the side of the column or the end surface of the beam with nails, but when it is fixed to the column, the bottom of the beam is received with the locking piece facing downward, and the plate is fixed to the beam. The locking piece is placed on the upper surface of the column with the upper side facing upward.

  The bracket is used to connect the small beam to the column, and is a U-shaped configuration composed of a central front plate and side plates extending in a direction perpendicular to both sides of the front plate. After being integrated by the connecting rod, it is fixed to the side surface of the column facing the large beam. The front plate of the metal fitting is provided with a holding hole that is concentric with the through hole formed in the column, and a bolt is inserted into this holding hole and screwed into the female screw of the connecting rod. As a result, the bracket is fixed to the column, and the side plate of the bracket is inserted into the end face of the beam, and then the drift pin is driven from the beam toward the side hole formed in the side plate, so that the column and beam are integrated. Is done.

  By configuring in this way, the column and the large beam can be coupled by the connecting rod, and the metal fitting for fastening the small beam is fixed by the female screw of the connecting rod, so that the processing for fixing the metal fitting to the column is performed. There is no need to do anything. Also, when multiple connecting rods are used, a single structure is formed in which all connecting rods are connected by interposing plates, so that the connecting fibers are bent away from each other and the wooden fiber of the big beam is torn. Can be prevented. In addition, since the plate is provided with a locking piece that can receive the bottom surface of the large beam, it is possible to temporarily place the large beam on an upright column. Can be combined.

  Next, the invention described in claim 2 is characterized in that the fixing means for integrating the buried shaft and the girder is a spiral slat formed on the side peripheral surface of the buried shaft. The slats are the same as those formed in the central tube. When the slats are inserted into the girder while turning the buried shaft, the slats can be firmly integrated by biting into the girder. In the invention according to claim 3, the fixing means for integrating the buried shaft and the large beam includes a fixing hole formed so as to penetrate the side peripheral surface of the buried shaft, and a fixing that is driven from the large beam and penetrates the fixing hole. It is characterized by being a pin. The method using the fixing pin is the same as integrating the metal fitting and the small beam with the drift pin.

  As in the first aspect of the present invention, the large beam and the small beam are integrated into the column by using a connecting rod, plate, metal fitting, etc., and then the column is erected independently, and then the large beam is temporarily placed on the column. After that, it becomes possible to couple both by the connecting rod. Therefore, conventionally, when installing the portal frame, a work space for integrating the column and the beam was required. However, in the present invention, the beam is joined after the column is erected, so this work space is unnecessary. Become. Also, in the present invention, the large beam can be temporarily placed on the column using the locking piece of the plate, and then the column and the large beam are gradually coupled by the connecting rod. The error can be absorbed naturally. Accordingly, problems such as work delays due to dimensional errors with adjacent members such as a base, as in a conventional portal frame, are solved. Furthermore, in the present invention, it becomes possible to proceed with the standing of the pillar and the erection of the beam in parallel, and the two steps of installing all the gate-shaped frames as in the past and then installing them all at once are performed step by step. There is no need to proceed, and the work time required to install the portal frame is shortened. In addition to these, the head of the connecting rod is equipped with a female screw, which can be used to fix the metal fittings for joining the beam, so that the column is machined with a groove to join the beam There is no need to prevent a decrease in strength due to a decrease in the cross-sectional area of the column. Note that the application of the present invention is not necessarily limited to the connection between a column and a beam, and can be used for all fastening parts having a letter shape in a wooden construction.

  As in the invention described in claim 2, the fixing means according to claim 1 is realized by providing a spiral wing plate on the side peripheral surface of the embedded shaft and inserting it into the round hole while turning the embedded shaft. In addition, as in the third aspect of the invention, the fixing means can be realized by using a drift pin.

  FIG. 1A is a perspective view showing a configuration of a fastener according to the present invention. However, each element is drawn separately. The column H has a lower end fixed by a base or the like, is erected with its tip facing upward, and a large beam L and a small beam S are coupled in a letter shape to the side surface near the upper end. The column H and the large beam L are fastened by a connecting rod 28 having a shape similar to a general-purpose bolt. For this reason, the embedded shaft 11 is inserted into the end surface of the large beam L, and the side surface of the column H is provided on the side surface of the column H. A central tube 22 is inserted. The embedded shaft 11 is a rod having a circular cross section, a wing plate 12 is formed in a spiral shape on the side peripheral surface, and a hexagonal portion 13 similar to a hex nut is formed on the end surface to hang a tool such as a spanner. An internal thread 14 is formed along the central axis. In order to insert this into the large beam L, a round hole 51 having the same diameter as that of the embedded shaft 11 is processed on the end surface of the large beam L. After the end surface of the embedded shaft 11 is fitted into the round hole 51, the hexagonal portion 13 is formed. When the entire structure is turned using the sway, the slat 12 bites into the girder L, and the thrust due to this causes the buried shaft 11 to be drawn into the girder L. The embedded shaft 11 is fixed by this friction. The buried shaft 11 is inserted into the large beam L in the factory.

  The central tube 22 has a cylindrical cross section that is embedded so as to penetrate both side surfaces of the column H. A wing plate 23 is formed in a spiral shape on the side peripheral surface thereof, and a tool is provided on the end surface facing the plate 17. A hexagonal portion 24 is formed to hang. The central tube 22 has an inner hole 25 penetrating both ends, but the diameter of the inner hole 25 changes midway, and the one facing the metal fitting 34 is a socket portion 26 having a larger diameter. The end of the portion 26 is a flange surface 27. And the through-hole 52 for inserting the center pipe | tube 22 is processed in the side surface of the pillar H, and this diameter is equal to the center pipe | tube 22. As shown in FIG. After fitting the end face of the central tube 22 to the through hole 52 and then turning the whole using the hexagonal portion 24, the slats 23 bite into the pillar H, and the central tube 22 It is pulled in and fixed. The central tube 22 is also inserted into the pillar H in the factory.

  The plate 17 is a metal plate interposed on the contact surface between the pillar H and the large beam L, and a drill hole 19 is formed at a position concentric with the embedded shaft 11 and the central tube 22. It has a slightly larger diameter than the leg 30 of the bar 28. Before the pillar H and the large beam L are fastened, the plate 17 needs to be fixed to the side surface of the pillar H with nails 21 and a nail hole 20 for that purpose is also formed. A locking piece 18 extending in the horizontal direction is formed at the lower portion of the plate 17, and after the pillar H is erected, the large beam L can be temporarily placed by the locking piece 18. After the temporary placement, the large beam L can be moved by thrust generated by the screwing of the connecting rod 28, and the use time of the crane can be shortened by limiting the use of the crane to the temporary placement. It is possible to shorten the work time by performing the joint work in parallel.

  The connecting rod 28 serves to integrate the central tube 22 inserted into the column H and the embedded shaft 11 inserted into the large beam L, and is composed of a head 29 having a large diameter and an elongated leg 30. ing. The head 29 has a diameter that can be fitted into the socket portion 26 of the central tube 22, and a hexagonal hole 31 for inserting a tool such as a hexagon wrench is formed at the top of the head 29. A female screw 32 is formed. Further, a male screw 33 that is screwed into the female screw 14 of the embedded shaft 11 is formed at the tip of the leg portion 30. When the leg portion 30 of the connecting rod 28 is inserted into the central tube 22 inserted into the column H from the side facing the large beam L, the male screw 33 passes through the drill hole 19 of the plate 17 and the female screw of the embedded shaft 11. 14, and the head portion 29 is accommodated in the socket portion 26. After that, when a tool is inserted into the hexagonal hole 31 and the connecting rod 28 is turned, the head 29 of the connecting rod 28 eventually comes into contact with the flange surface 27, so that the large beam L is drawn to the column H via the embedded shaft 11. To go.

  After the column H and the large beam L are integrated by the connecting rod 28, the small beam S is coupled to the column H via the metal fitting 34. The metal fitting 34 is composed of a central front plate 35 and two side plates 36 extending at right angles from both ends thereof, and has a U-shape when viewed from above. Thus, the holding hole 37 for allowing the bolt 39 to pass therethrough is formed, and the two side plates 36 are provided with a side hole 38 for inserting the drift pin 40 coaxially. Therefore, after the front plate 35 is brought into contact with the side surface of the column H, the bolt 39 is inserted from between the side plates 36 and the tip portion thereof is screwed into the female screw 32 of the connecting rod 28, whereby the metal fitting 34 is attached to the column H. Integrated. Next, after inserting the front plate 35 into the notch 53 formed by carving the end face of the small beam S and inserting the side plate 36 into the groove 54, the drift pin 40 is directed from the pin hole 55 of the small beam S toward the side hole 38. , The pillar H and the small beam S are integrated. The notch 53, the groove 54, and the pin hole 55 are processed at predetermined positions in the factory.

  FIG. 2 is a central sectional view of FIG. The embedded shaft 11 to be inserted into the round hole 51 of the large beam L has a female screw 14 formed on an end surface which is rearward when inserted, and a hexagonal portion 13 for turning the embedded shaft 11 is formed. The central tube 22 has an inner hole 25 extending therethrough, and on the left side thereof is a socket portion 26 having a large cross-sectional diameter, and this end is a flange surface 27 extending in the radial direction. The head 29 can be restrained. The socket portion 26 has a diameter that can accommodate the head portion 29 of the connecting rod 28, and the right inner hole 25 has a diameter that allows the leg portion 30 to be inserted with a margin. In addition, the drill holes 19 formed in the plate 17 have substantially the same diameter as the leg portions 30, and the nails 21 for fixing the plate 17 are configured such that the head does not protrude from the surface of the plate 17. In addition, a hexagon hole 31 is formed in the head 29 of the connecting rod 28 so that a hexagon wrench or the like can be inserted, a female screw 32 is formed in the back thereof, and a head of a bolt 39 is formed on the end face of the small beam S. In order to store the clearance hole 56, a relief hole 56 cut out by a drill or the like is formed. Although illustration is omitted in FIGS. 1 and 2, the connecting rod 28 and the like are arranged in the same configuration in two upper and lower stages.

  FIG. 3 is a perspective view showing a process for integrating the column H, the large beam L, and the small beam S according to the present invention, and shows a first stage thereof. In the first stage, the embedded shaft 11 is inserted into the end surface of the large beam L, and only the hexagonal portion 13 and the female screw 14 of the embedded shaft 11 are exposed from the round hole 51 on the end surface of the large beam L. Further, the central tube 22 is inserted into the through hole 52 of the column H, and then the plate 17 is fixed to the side surface of the column H. The work until the plate 17 is fixed does not have to be performed at the construction site, but is preferably performed in advance at a factory or the like. After the column H is erected, the end of the large beam L is placed on the locking piece 18 of the plate 17, and then the connecting rod 28 is inserted into the central tube 22, and the male screw 33 of the leg portion 30 is inserted into the embedded shaft. 11 to the female screw 14. The turning of the connecting rod 28 can be performed by inserting a tool into the hexagonal hole 31.

  FIG. 4 is a perspective view showing a process when the column H, the large beam L, and the small beam S are integrated according to the present invention, and shows the second stage and the third stage. In the second stage shown in FIG. 4A, the connecting rod 28 is embedded in the column H, whereby the column H and the large beam L are integrated. Further, the head 29 of the connecting rod 28 is exposed on the side surface of the column H, and a female screw 32 is formed in the back of the hexagonal hole 31. Thereafter, the front plate 35 of the metal fitting 34 is brought into contact with the side surface of the column H, and the bolt 39 is inserted from the holding hole 37 of the front plate 35 toward the female screw 32 of the connecting rod 28. As a result, the metal fitting 34 is fixed to the column H as in the third stage shown in FIG. 4B, and after that, the side plate 36 is inserted into the groove 54 of the small beam S and then drifts through the small beam S and the side plate 36. Pin 40 is driven in and both are integrated.

  FIG. 5 shows the stage where the process of integrating the pillar H, the large beam L, and the small beam S is completed according to the present invention, FIG. 5 (A) is a perspective view, and FIG. 5 (B) is the center. It is sectional drawing. When the column H, the large beam L, and the small beam S are integrated in this way, the components excluding the plate 17 and the metal fitting 34 are embedded in the column H and the like. It has features that can prevent the decline and suppress the collapse of the building.

  FIG. 6 is a central cross-sectional view showing an embodiment different from that in FIG. 1, and the feature is that the large beam L and the small beam S have different heights and newly use the shaft 61. In FIG. 6, the connecting rod 28 used in the upper part of the column H and the structure related thereto are the same as those in FIG. 1, but the connecting rod 28 used in the lower part connects only the column H and the large beam L. It is used for this purpose and is not in contact with the metal fitting 34 at all. Between the two upper and lower connecting rods 28, a cylindrical shaft 61 is arranged. In order to insert the shaft 61, a through hole 52 'is formed in the column H, a drill hole 19' is formed in the plate 17, and a large beam L is formed. Is formed with a round hole 51 '. Further, an internal thread 63 is formed on the end surface of the shaft 61, and a bolt 39 ′ for fixing the metal fitting 34 can be screwed using the internal thread 63. In addition, in order to couple the shaft 61 to the pillar H or the large beam L, a lateral hole 62 is formed through the side peripheral surface of the shaft 61, and pins are driven into the lateral hole 62 from the column H or the large beam L. Can be fixed.

  FIG. 7 shows a state in which the elements of FIG. 6 are integrated. As shown in this figure, the bolts 39 and 39 'for fixing the metal fitting 34 are screwed to the upper connecting rod 28 and the shaft 61, and the lower connecting rod 28 is only connected to the column H and the large beam L. Is used. Since the shaft 61 having a large cross-sectional area passes through the column H and the large beam L in this way, it is possible to efficiently transmit the vertical load acting on the large beam L to the column H.

  FIG. 8 is a cross-sectional view showing an embodiment of the present invention. FIG. 8A uses the end surface of the central tube 22 as the flange surface 27, and the inner hole 25 of the central tube 22 has the same diameter as a whole. It has become. 8A shows the cross-sectional shapes of the central tube 22 and the connecting rod 28 used here. Thus, the structure of the flange surface 27 is different, and the other structure is the same as the cross-sectional view of FIG. FIG. 8B shows a form in which a fixing pin 16 is used as a fixing means for integrating the buried shaft 11 with the large beam L. In addition, the cross-sectional shape of the embedded shaft 11 used here is shown above FIG. The embedded shaft 11 is a rod having a simple circular cross section, and is the same in that a female screw 14 is formed on one end face, but has a feature that it has a fixing hole 15 penetrating the side peripheral surface. . After the embedded shaft 11 is inserted into the large beam L, both are integrated by driving a fixing pin 16 from the large beam L toward the fixing hole 15.

  FIG. 9 is a perspective view showing a form example of the plate 17, and FIG. 9A shows a form in which the narrow plate 17 is fixed to the column H. FIG. In this way, the width of the plate 17 is made narrower than that of the large beam L, and this is fixed to the side surface of the column H, and a notch 57 that engages with the plate 17 is provided on the end surface of the large beam L. A configuration sandwiched in 57 is also possible. In this case, when temporarily placing the large beam L, the plate 17 is inserted into the notch 57, so that the lateral movement of the large beam L can be restricted, and the position adjustment between the column H and the large beam L is naturally realized. Moreover, since the side surface of the plate 17 is covered with the large beam L or the like, it is excellent against fire. Further, as shown in FIG. 9B, the plate 17 with the locking piece 18 facing upward is fitted into the notch 57 formed on the end face of the large beam L, and then both are integrated by the nails 21 to thereby integrate the large beam. When L is temporarily placed, a form in which the locking piece 18 is placed on the upper surface of the column H is also possible.

(A) is a perspective view which shows the structure of the fastener by this invention, (B) has shown the state which reversed the attitude | position of the metal fitting drawn by (A), and turned the front board to this side. FIG. 2 is a central sectional view of FIG. 1. It is a perspective view which shows the process at the time of integrating a pillar, a big beam, and a small beam, and has shown the 1st step. It is a perspective view which shows the process at the time of integrating a pillar, a big beam, and a small beam, (A) has shown the 2nd step, (B) has shown the 3rd step. The stage at the time of integrating a pillar, a big beam, and a small beam is shown, (A) is a perspective view and (B) is a central section. FIG. 2 is a central sectional view showing an embodiment different from that in FIG. 1, and the height is different between a large beam and a small beam, and a shaft is newly used. The state which integrated each element of FIG. 6 is shown. It is sectional drawing which shows the example of a form of this invention, (A) is a form which utilizes the end surface of a center pipe | tube as a flange surface, (B) is a form which integrates a buried axis | shaft with a big beam with a fixing pin. It is a perspective view which shows the example of a form of a plate, (A) is a form which fixes a narrow plate to a pillar, (B) is a form which fixes a plate to a large beam, and a locking piece rests on the upper surface of a pillar. is there.

Explanation of symbols

11 embedded shaft 12 wing plate 13 hexagonal portion 14 female screw 15 fixing hole 16 fixing pin 17 plate 18 locking piece 19 drill hole 20 nail hole 21 nails 22 central tube 23 wing plate 24 hexagonal portion 25 medium hole 26 socket portion 27 flange surface 28 Connecting rod 29 Head 30 Leg 31 Hexagonal hole 32 Female screw 33 Male screw 34 Metal fitting 35 Front plate 36 Side plate 37 Holding hole 38 Side hole 39 Bolt 40 Drift pin 51 Round hole 52 Through hole 53 Notch 54 Groove 55 Pin hole 56 Escape hole 57 Notch 61 Shaft 62 Horizontal hole 63 Female thread H Column L Large beam S Small beam

Claims (3)

A fastening portion that connects the end face of the large beam (L) to one side of the column (H) and the small beam (S) to the side facing the large beam (L),
An embedded shaft (11) inserted into a round hole (51) formed in the end face of the beam (L);
A central tube (22) inserted into a through hole (52) passing through both sides of the column (H);
A connecting rod (28) inserted into the central tube (22);
A plate (17) interposed between the pillar (H) and the girder (L);
A metal fitting (34) interposed between the pillar (H) and the small beam (S);
A bolt (39) for fixing the metal fitting (34) to the connecting rod (28);
A drift pin (40) that is driven from the side of the beam (S) to integrate the metal fitting (34) into the beam (S);
With
The embedded shaft (11) is formed with fixing means for integrating with the large beam (L), and an internal thread (14) on the end face,
The central tube (22) has an inner hole (25) for inserting the connecting rod (28), and a spiral blade (23) for integrating with the pillar (H) on the side peripheral surface. And has a disk-shaped flange surface (27) in the end surface on the small beam (S) side or in the inner hole (25),
The connecting rod (28) includes a head (29) whose movement in the axial direction is restricted by the flange surface (27), and a leg (30) extending from the head (29). A female screw (32) for screwing with the bolt (39) is formed at the top of the head (29), and the embedded shaft (11) is formed at the tip of the leg (30). A male screw (33) for screwing with the female screw (14) is formed,
The plate (17) has a drill hole (19) for allowing the leg (30) of the connecting rod (28) to pass therethrough, and is in contact with the bottom surface of the large beam (L) or the top surface of the column (H). The locking piece (18)
The metal fitting (34) includes a front plate (35) and a pair of side plates (36) extending at right angles from both ends of the front plate (35) and inserted into the small beam (S). The front plate (35) has a holding hole (37) for allowing the bolt (39) to pass therethrough, and the side plate (36) for allowing the drift pin (40) to pass therethrough. With side holes (38),
The connecting rod (28) inserted into the bore (25) of the central tube (22) and screwed into the female screw (14) of the embedded shaft (11), and the female screw (32) of the connecting rod (28) By means of a fitting (34) inserted through a drift pin (40) fixed to the column (H) by a bolt (39) to be joined and driven into the small beam (S), the large beam (L) and the small beam (S ) And the column (H).   The fastener according to claim 1, wherein the fixing means is a spiral slat (12) formed on a side peripheral surface of the embedded shaft (11). The fixing means includes a fixing hole (15) formed so as to penetrate the side peripheral surface of the embedded shaft (11), and a fixing pin (16) which is driven from the large beam (L) and passes through the fixing hole (15). The fastener according to claim 1, wherein:

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