JP2007321428A - Joint structure of horizontal member and other structural member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure capable of preventing a mortise 3 and a tenon 4 from being broken by dispersing load applied on them and reducing depth of the mortise 3 to reduce area of a chipped part. <P>SOLUTION: This joint structure is composed of a drawing-close structure by drawing-close hardware 10 fitting the tenon 4 corresponding to the shallow and wide mortise 3 into the mortise 3 and letting the inside of the horizontal member 2 pass in the axial direction of the horizontal member 2. The mortise 3 has at least a bottom face 5, side walls 6, 7 on both sides, and a bottom wall 8 connecting them. Both side walls 6, 7 are arranged in a taper shape forming a wide interval between them in an upper part and a narrow interval between them in a lower part. The bottom wall 8 is formed by a curved face having a gently rising-up central part and is gently connected with both side walls. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a joint structure between a column and a horizontal member or between horizontal members.

In timber framed construction houses, tenon joint structures with tenon and tenon are often used at the joints between pillars and horizontal members (beams, girders) and at the joints between horizontal members. Although the shape of the tenon and the tenon hole varies, at present, “large groove and groove joining” suitable for so-called precut processing is often used. “Large groove joining” forms a mortise in the other structural material to which the end of the horizontal member is joined, and forms a mortise in the end of the horizontal member. The shape of the mortise will be described. On the bottom of the shallow first mortise, which is U-shaped when viewed from the front with a relatively large area, there is a second mortise as a groove when viewed from the top. The U-shaped first stage mortise has a deeply formed structure, and the top is open, and the dovetail fitting mortise also has an open top.
The first stage mortise hole in “groove joint with large feed” guides the tenon on the horizontal member side up and down at the straight part on both sides of the U-shaped side wall and loads at the bottom wall of the semicircular arc bear. The second tiered mortise resists the pulling force on the horizontal member.

"Wood housing construction common specification", 2000 (2nd edition), Housing Finance Promotion Association, p. 42

  However, in the above-described “groove joint with large feed”, the burden on the bottom wall portion having a semicircular arc shape that supports the load of the horizontal member is large, and the depth of the first mortise, that is, the side wall portion, the bottom portion, It is difficult to reduce the width of the wall portion (the insertion size is usually 25 mm). In addition, it is more troublesome to form a groove-type mortise in the axial direction from the bottom of the first mortise, and the mortise like a dovetail is open to the surface of the material. Can only make. For this reason, the top mortise must also be open at the top, and a defect portion extending in the transverse direction of the material is generated on the top surface of the material, so that the dynamics of other structural materials supporting the horizontal member The deficit is large. The same can be said for the joint processing at the end of the horizontal member, with the concavities and convexities reversed.

It is an object of the present invention to provide a joint structure between a horizontal member and another structural member that can be formed easily at a joint portion between the horizontal member and another structural member and can be formed with less defects.
In the present invention, other structural materials such as horizontal members and other structural members may be columns and horizontal members. That is, the present invention is such that the end of the horizontal member is abutted against the column and joined to the column and the horizontal member joining portion, and the other horizontal member is abutted against the side of one horizontal member and joined. It is intended for the joint structure of horizontal joints (joint processing) where the horizontal members are joined together and the horizontal member series joints (joint processing) where the horizontal members are joined together in series at the ends. . In the case of joint processing, it will be described as a mortise and a mortise.

A joint structure where the end of the horizontal member is abutted against another structural member is joined with a fitting structure of a mortise and a tenon and a drawing structure using a drawing metal.
The mortise-to-mortise fitting structure is a shallow wide mortise fit to a corresponding tenon, and the mortise has at least a bottom surface, side walls on both sides, and a bottom wall to connect them. The both side walls are tapered so that the interval is wide at the upper side and narrow at the lower side, and the bottom wall part is formed by a curved surface having a gently raised center, and is also gently connected to both side walls.

The pulling structure is composed of a trigger material, a connecting hardware and a receiving hardware arranged in the axial direction of the horizontal material inside the horizontal material across the horizontal material and other structural materials, and connecting the trigger and the receiving material. Join with hardware and operate the trigger to pull the horizontal member and other structural material.
The mortise is formed in an independent form with the top closed at the junction of the horizontal member to the column. The mortise of an independent type is a mortise fitted from the front, and a plurality of mortises may be arranged vertically in one joint location.
In the case of a mortise having an open top, the mortise is fitted into the mortise from above. There may be a structure in which a side wall portion of the first-stage mortise is formed in a groove and resists drawing at the portion of the first-stage mortise together with the corresponding form of mortise.

  Since the gap between the side walls of the mortise is tapered, the load from above is also distributed in the direction perpendicular to the side walls, and the load borne by the bottom wall of the mortise is reduced. Further, since the bottom wall portion is formed in a gentle curve with the center rising upward, the area receiving the load is large and the burden load per unit area is small. As a result, the width (insertion dimension) of the side wall portion of the mortise can be reduced to about 16 mm.

The pulling structure mainly resists the pulling force that the horizontal member receives. The drawing structure is made of hardware and is arranged in such a manner that it is embedded in the horizontal member and the structural material along the axis of the horizontal member, so that the drawing structure is not conspicuous from the outside. It is suitable for dwellings with a so-called “representative” design that exposes the texture of the material and the structure of the frame.
Further, since the pulling structure is made of hardware, it is only necessary to drill a hole in the horizontal member or other structural member, and the material is hardly lost and is robust.

[Example 1]
FIG. 1 shows a part where a horizontal member 2 is joined to a side surface of a horizontal member 1 (another structural material) from an orthogonal direction, and a mortise 3 (FIG. 2) is formed on a side surface of the horizontal member 1. The tenon 4 is formed at the end of the horizontal member 2. The mortise 4 and the mortise 3 are processed by a router, and constitute a fitting structure between the shallow and wide mortise 3 and the mortise 4 corresponding thereto. Since the mortise 4 and the mortise 3 have a structure corresponding to the unevenness, the mortise 3 will be mainly described.

  The mortise 3 (FIG. 3) has a bottom surface 5, side wall portions 6, 7 on both sides and a bottom wall portion 8 connecting them, and an upper portion 9 is an opening 9 in this embodiment. The width d1 of the opening 9 is 78 mm, the height d2 of the mortise 3 is 90 mm, and the depth of the mortise 3 (height of the side walls 6 and 7 and the bottom wall 8, FIG. 2) is d3 = 16 mm. Since the bottom surface 5 is flat and the depth d3 of the mortise 3 is smaller than the dimension d1 of the opening 9 and the height d2 of the mortise 3, the mortise 3 is wide and shallow as a whole.

The side wall portions 6 and 7 extend from the opening 9 to the bottom wall portion 8, and the distance between the side wall portions 6 and 7 is the width of the opening 9 (d1 = 78) on the upper side and d4 = 56 mm on the lower side. Tapered arrangement. The lower ends of the side wall portions 6 and 7 and both ends of the bottom wall portion 8 are gently connected with a radius of about d5 = 9 mm, and the center of the bottom wall portion 8 is formed with a gently curved surface with a radius of about d6 = 12 mm. Has been.
In this embodiment, the side wall portions 6 and 7 and the bottom wall portion 8 are each wider on the back side than the front surface side, and the mortise 3 has a “deep mortise” structure.
The mortise 4 (FIG. 2B) has a form and a structure corresponding to the mortise 3, and is an “arranged mortise”.

  The fitting structure of the mortise 3 and the mortise 4 is fastened by a drawing structure by a drawing metal 10 (FIG. 4) passing through the inside of the horizontal member 2 in the axial direction of the horizontal member 2. In this embodiment, the attracting metal 10 is composed of a long screw rod 11, a rubber washer 12, a nut 13, and a washer nut 14.

  In order to use the attracting hardware 10, a through hole 15 is formed by crossing the material from the center portion of the mortise 3 on the side of the horizontal member 1 (FIGS. 1 and 2). In addition, a through hole 16 is formed in the horizontal member 2 from the center of the tenon 4 along the axial direction of the material, and a mortise-type operation hole 17 is formed at the tip thereof from the upper surface side of the horizontal member 2. To do. The dimensions of the through hole 15 and the through hole 6 are adjusted so as to be on the same axis in the axial direction of the horizontal member 2. The through hole 16 has approximately the same length as the long screw rod 11. The operation hole 17 has the minimum size necessary for operating the nut 13 and the size of the rubber washer 12 inserted into the hole, and has an axial dimension d7 = 57 mm and a transverse dimension d8 = 60 mm. Depth d9 = 60 mm.

  Before fitting the mortise 4 to the mortise 3, the long screw rod 11 is inserted into the through hole 16 of the mortise 4 of the horizontal member 2, and the rubber washer 12 is fitted to the tip, and then the nut 13 is screwed. (FIG. 5). By screwing the nut 13, the long screw rod 11 does not fall off from the end of the horizontal member 2, and the base of the long screw rod 11 uses the margin of the operation hole 17 to end the end surface of the horizontal member 2 ( Since it can be made into the state pulled in from the tenon 4), the horizontal member 2 can be conveyed from a factory to the field in this state.

  At the site, insert the end (tenon 4) of the horizontal member 2 into the mortise 3 of the other structural material (horizontal member 1) that has been assembled from above, and fit it securely in the vertical direction. The long screw rod 11 is pushed out from the operation hole 17 of the material 2 to the horizontal member 1 side, and the base of the long screw rod 11 is put into the through hole 15 of the horizontal member 1.

Next, a nut 14 with a washer is inserted from the opposite side, and its tip is screwed into the base end of the long screw rod 11. Next, the nut 14 with a washer is rotated with an impact wrench or the like so that the long screw rod 11 does not rotate together with the nut 13 screwed into the tip of the long screw rod 11. The nut 14 with a washer is screwed with the long screw rod 11 as it rotates, and draws it. In the final stage, when the washer part reaches the surface of the horizontal member 1 and is further rotated, the blade provided on the back surface of the washer part digs up and the washer part sinks, and the surface of the horizontal member 1 And become the same. Finally, when a tool is inserted into the operation hole 17 of the horizontal member 2 and the nut 13 is tightened, the end of the horizontal member 2 is fastened to the side surface of the horizontal member 1 (FIG. 1).
The nut 14 with washer is screwed smoothly because there is friction between the long screw rod 11 and the horizontal member 2 and resistance to rotation. When the long screw rod 11 rotates completely together, a means for preventing this with an adhesive or the like is necessary.

In this state, the horizontal member 1 supports the load of the horizontal member 2 by the fitting of the mortise 3 and the mortise 4, but the both side walls 6 and 7 of the mortise 3 are tapered downward in the vertical direction. Since it is arranged, the load from above by the horizontal member 2 is borne by both the side wall portions 6 and 7 together with the bottom wall portion 8, and is also borne by the bottom wall portion having a long contact surface due to the curved surface. As a result, the load is distributed and borne in a wide range after all. Thereby, even if the depth of the mortise 3 is shallow (so-called tenon insertion is small), the load of the horizontal member 2 can be sufficiently supported. And since it is tightened by the attracting metal object 10, even if the mortise 3 is shallow, the mortise fitting will not come off.
When the side wall portions 6 and 7 and the bottom wall portion 8 of the mortise 3 have the “arranged mortise” structure, even when the mortise 4 of the horizontal member 2 is temporarily fitted into the mortise 3 of the horizontal member 1. The horizontal member 2 can be prevented from falling off unexpectedly, and the tightness by the attracting hardware 10 can be further strengthened.

For this reason, the defect | deletion of the joint location in the edge part of the horizontal member 2 or other structural material 1 by joint processing reduces markedly.
Moreover, since the attracting hardware 10 is positioned inside in the axial direction of the horizontal member 2, the hardware is not visible from the outside, and the hardware is also used in the “appearance” specification in which the shaft assembly is exposed as an interior finish. The result is inconspicuous and satisfactory. Further, the attracting metal object 10 is attracted along the axis near the center of the material, so that it is most efficient and deformation of the shaft assembly and the material itself is suppressed.

[Example 2]
6 and 7, the structure of the drawing hardware 10 is different from that of the first embodiment. The structure of the mortise 3 and the mortise 4 is the same. In this embodiment, the attracting metal 10 (FIG. 7A) includes a lag screw 19 having a male screw 18 at the tip, an intermediate screw cylinder 20 having a female screw, and a bolt 21 with a washer. The bolt portion of the bolt 21 with the washer has a length substantially equal to the transverse dimension of the horizontal member 1.

  A through hole 15 is provided in the horizontal member 1 (another structural material), and an insertion hole 22 is formed in the horizontal member 2 so that the intermediate screw cylinder 20 can be inserted in the axial direction from the center of the tenon 4. . The lag screw 19 is screwed into the bottom of the insertion hole 22 of the horizontal member 2, and the male screw portion 18 is exposed to the insertion hole 22. Further, the intermediate screw cylinder 20 is inserted into the insertion hole 22 and screwed into the male screw 18 of the lag screw 19. The intermediate screw cylinder 20 is shorter than the axial dimension of the insertion hole 22 and includes a tool hook 23 on the base end side (opening side of the insertion hole 22). In this state, the horizontal member 1 and the horizontal member 2 are shipped.

  At the site, the tenon 4 of the horizontal member 2 is fitted into the tenon hole 3 of the assembled horizontal member 1 from above. After the fitting is ensured, a bolt 21 with a washer is inserted into the through hole 15 of the horizontal member 1 and the tip thereof is screwed into the intermediate screw cylinder 20 on the horizontal member 2 side. Further, the washer-attached bolt 21 is rotated to draw and fasten the horizontal member 2 to the horizontal member 1 side. The screw 21 with the washer is screwed in smoothly because the intermediate screw cylinder 20 has friction with the horizontal member 2 and has resistance to rotation. When the middle screw cylinder 20 completely rotates together, a means for preventing this with an adhesive or the like is necessary.

The same effects as those of the first embodiment can be obtained. In this embodiment, it is not necessary to provide the operation hole 17 on the horizontal member 2 side.
As shown in FIG. 7B, the bolt 21 with a washer is a combination of a nut 14 with a washer and an intermediate screw rod 24, and the intermediate screw rod 24 is connected to the washer nut 14 and the intermediate screw cylinder 20 on the horizontal member 2 side. It can also be set as the structure couple | bonded by. If several types of intermediate screw rods 24 corresponding to the transverse dimensions of the horizontal member 1 are prepared, it is not necessary to prepare several types of washer bolts 21.
Further, the intermediate screw cylinder 20 and the lag screw 19 may be integrated as shown in FIG.

Example 3
FIG. 8A shows a structure similar to that of the second embodiment, but the tenon 4 of the horizontal member 2 is abutted and fitted to the tenon 3 of the horizontal member 1 from the front. The side wall portions 6 and 7 and the bottom wall portion 8 do not have the “arbor hole” structure. In this case, the intermediate screw rod 24 is inserted into the insertion hole 22 on the horizontal member 2 side at the site, the tip portion is screwed into the intermediate screw cylinder 20, and the base portion is protruded from the insertion hole 22. Then, while inserting the base portion of the intermediate screw rod 24 into the through hole 15 of the horizontal member 1, the tenon 4 is fitted to the mortise 3 from the front, and the nut 14 with a washer inserted from the opposite side of the through hole 15 is fitted. Screw into the base of the middle threaded rod 20 and pull. As a result, the horizontal member 2 is drawn to the horizontal member 1 via the lag screw 19.

  When the tenon 4 is abutted and fitted to the mortise 3 from the front, even if the base portion of the member attached to the horizontal member 2 of the pulling fitting 10 protrudes from the end surface of the mortise 4, the mortise 3 and the tenon 4 does not interfere with the mating. Therefore, as shown in FIG. 8B, it is possible to use the short screw cylinder 25 and the short screw rod 26 integrated. In this case, the short screw rod 26 is screwed into the intermediate screw cylinder 20 on the horizontal member 2 side, and the short screw cylinder 25 is exposed. On the other hand, the through hole 15 of the horizontal member 1 is formed in an insertion hole into which the short screw cylinder 25 can be inserted by increasing the diameter of the mortise 3 side. The mortise 4 is fitted into the mortise 3, the washer-attached bolt 21 inserted from the opposite side of the through hole 15 is screwed into the short screw cylinder 25 and tightened to fasten the horizontal member 2 to the horizontal member 1.

Example 4
9 and 10 show a case where the end of the horizontal member 2 such as a beam is joined to the upper end of the column 27 (other structural material). Tenon holes 28 are formed in the two surfaces (front and right side surfaces) of the upper end of the column 27, and tenon 29 projects from the end surface of the horizontal member 2. The mortise 28 and the mortise 29 are vertically elongated according to the height of the horizontal member 2, but the side walls 6 and 7 on both sides of the mortise 28 are tapered. The other configurations are the same as those of the first embodiment, such as the arrangement, and the bottom wall portion 8 is formed with a gently curved surface.

However, the attracting hardware 10 is arranged in two upper and lower stages because the height of the horizontal member 2 is large, and in this embodiment, the upper stage is operated with the long screw rod 11 used in the first embodiment. The hole 17 is used, and the lower part uses the washer bolt 21 used in the second embodiment. For this reason, two bottom through holes 15 and 15 are formed in the bottom surface 5 of the mortise 28 on the column side, and a through hole 16 and an insertion hole 22 are also formed in the tenon 29 on the horizontal member 2 side. .
The attachment procedure is the same as in the first and second embodiments.
When the height of the horizontal member 2 is large, the height of the mortise 28 and the tenon 29 is increased in this way, and the pulling hardware 10 is used in two stages. It is possible to prevent the horizontal member 2 having a high height from being twisted due to drying or the like. In addition, there are few defects in the material that occur due to joint processing.

Example 5
11 and 12 show the case where the end of the horizontal member 2 such as a second-level beam is joined to the intermediate part of the through pillar 30. Tenon holes 31 (31a, 31b) are formed in two surfaces (front and right side surfaces) in the middle part of the through column 30, and tenon 32 (32a, 32b) is projected and processed on the end surface of the horizontal member 2. Yes. The mortises 31a and 31b are arranged in two upper and lower tiers according to the height of the horizontal member 2, but each is an independent mortise 31 whose upper portion is closed by the upper wall portion 33. ing. However, the other configurations are the same as those of the first embodiment, such that the side wall portions 6 and 7 on both sides of the mortise 31 are tapered so that the bottom wall portion 8 is formed with a gently curved surface. is there.

The mortises 32a and 32b are also independent and correspond to the mortises 31a and 31b. However, since the mortise 32 needs to be inserted into the mortise 31 from the front, the upper wall portion 33, the side wall portions 6 and 7, and the bottom wall portion 8 do not have the “relief mortise” structure.
In each of the tenon holes 31, a through hole 15 is formed in the bottom surface 5, a through hole 16 is formed in the upper tenon 32a, and an insertion hole 22 is formed in the lower tenon 32b. Further, it is necessary to form the operation hole 17 from the upper surface of the horizontal member 2 and to communicate with the through hole 16. As in the case of the third embodiment, the attracting hardware 10 of the first embodiment is used for the fastening of the upper mortise 31a and the tenon 32a, and the lower mortise 31b and the tenon 32b of the second embodiment are used for the fastening. The attracting hardware 10 is used. These attachment procedures and operational effects are the same as those of the fourth embodiment except that the horizontal member 2 is abutted against the through column 30 from the front.

  In the case of the fifth embodiment, at the place where the horizontal member 2 (the beam 2a and the trunk difference 2b) is orthogonally attached to the through column 30, the attracting hardware 10 (10a, 10b) for fastening them is also shown in FIGS. Thus, the arrangement is orthogonal. FIG. 13 shows a case where the long screw rod 11 is used, and FIG. 14 shows a case where the lag screw 19 is used. If the position of the mortise 31 at the place where the beam 2a is attached and the position of the mortise 31 at the place where the body difference 2b is attached are shifted up and down, it is possible to avoid the axes of the attracting hardware 10 and 10 being orthogonal. However, it is necessary to properly use the positions of the mortise 31 and the mortise 32 depending on the type of the horizontal member 2 such as a trunk difference or a beam and how to attach the mortise, and it is troublesome in processing the joint. The same applies to the fourth embodiment, and it is necessary to change the vertical positions of the through hole 15 and the through hole 16 between the front side and the right side of the column 27.

15 and 16 show a sixth embodiment, and show only the attracting hardware 10. According to the attracting metal objects 10a and 10b, the axes of the attracting metal objects 10 can be arranged so as to be orthogonal to each other between the beam 2a and the trunk difference 2b side, and the mortise 31 or the like is formed between the beam 2a and the trunk difference 2b side. There is no need to shift the position of the tenon 32.
The orthogonality of the attracting hardware 10a and 10b using the long screw rod 11 of FIG. 13 will be described. An additional symbol a is attached to the member of the attracting metal 10a, and an additional symbol b is appended to the member of the attracting metal 10b to distinguish them.

  The attracting metal 10a includes a nut 13a (FIG. 13) and a rubber washer 12a disposed in an operation hole 17a, a long screw rod 11a, a medium screw tube 20a (FIGS. 15 and 16), a medium screw rod 24a, and a short screw tube. 25a, an intermediate screw rod 24a, and a nut 14a with a washer. The short screw cylinder 25a has the same tool hook portion 23 as the intermediate screw cylinder 20a on the tip side. The attracting metal 10b is substantially the same as the attracting metal 10a, but the portions of the intermediate screw rod 24a and the short screw cylinder 25a are a short screw rod 26b and a long screw cylinder 34 with a hole. The long screw cylinder 34 with a hole has a tool hook 23 at one end and a transverse through-hole 35 (FIG. 16) at the center in the longitudinal direction. The diameter of the through hole 35 is such that the medium screw rod 24a can penetrate.

The attracting hardware 10a, 10b is used as follows.
A through hole 15 is formed in the tenon difference side mortise 31 of the through column 30, a long screw cylinder 34 with a hole is inserted from the mortise 31 side, and a medium screw rod 24b is attached to the nut 14b with a washer from the opposite side. The tip of the medium screw rod 24b is screwed into the base of the long screw cylinder 34 with holes. Next, a through hole 15 is provided in the beam side mortise 31 of the through pillar 30, and a short screw cylinder 25a is inserted into the through hole 15 and a medium screw rod 24a attached to the nut 14a with a washer is inserted from the opposite side of the through hole 15, The tip is passed through the through hole 35 of the long screw cylinder 34 with a hole, and is screwed into the short screw cylinder 25a.

  The screw connection between the long screw cylinder 34 with the hole and the nut 14b with the washer attached with the intermediate screw rod 24b is tightened after passing the intermediate screw rod 24a on the beam side through the through hole 35 of the long screw cylinder 34 with the hole. Fix it. Then, the nut 14a with a washer on the beam side and the short screw cylinder 25a and the short screw cylinder 25a are fastened and fixed. Thereby, the front end side of the long screw cylinder 34 with a hole and the base end side of the short screw cylinder 25a are opened in the center part of the body side mortise 31 and the beam side mortise 31 of the through column 30 (opening of an internal thread).

  In this structure, the long screw cylinder 34 with a hole on the trunk difference side and the intermediate screw rod 24b screwed to the tip thereof may be integrally formed from the beginning. Moreover, the short screw cylinder 25a on the beam side and the intermediate screw rod 24a screwed to the tip of the cylinder may be integrally formed from the beginning. In these cases, the long screw cylinder 34 with a hole and the intermediate screw rod 24b are integrally inserted into the through hole 15 of the barrel difference side mortise 31 and the intermediate screw rod 24a is inserted at the head, and a nut 14b with a washer is screwed to the tip of this. Will match. The same applies to the short screw cylinder 25a and the intermediate screw rod 24a that are integrated, and is inserted from the through hole 15 of the mortise 31 on the beam side with the intermediate screw rod 24a leading, and a long screw cylinder with a hole on the trunk difference side. The washer nut 14a is screwed onto the tip of the through hole 35.

  As described above, when the through column 30 side is ready, the long screw rod 11 is passed through the through hole 16 of the beam 2a, the rubber washer 12a and the nut 13a are attached to the distal end within the operation hole 17a, and the intermediate screw cylinder is attached to the proximal end. 20a is screwed and the whole is fixed to the beam 2a. Each member is similarly fixed also about the trunk difference 2b. Next, the base portion of the intermediate screw rod 24a is screwed into the short screw cylinder 26a opened in the beam side mortise 31 of the through column 30, and the end of the beam 2a is abutted against the through column 30 from the front and tenon 32 Is fitted into the mortise 31. Then, since the distal end of the intermediate screw rod 20a is near the proximal end side of the beam-side intermediate screw tube 20a, the long screw 11 is rotated by using a tool from the operation hole 17 so that the intermediate screw tube 20a is moved to the intermediate screw rod. Screwed into the tip of 20a. When the nuts 13a are sufficiently screwed together, the nut 13a is turned and tightened, and the beam 2a is fastened to the through column 30. Tightening can also be performed by rotating the nuts 14a and 14b with washers on the through column 30 side with a tool.

The same applies to the case of the body difference 2b, but the base of the short screw rod 26b is screwed to the tip of the long screw cylinder 34 with a hole opened in the mortise 31 on the body difference side, and the tip is attached to the body. It is inserted into a through hole 15b formed in the mortise 31 on the difference side, and the long screw rod 11b is operated from the operation hole 17b to screw the base portion of the middle screw cylinder 24b into the tip portion of the short screw rod 26b. Next, the nut 13 b is operated and fastened to fix the body difference 2 b to the through column 30.
The attracting hardware 10 using the lag screw 19 (FIG. 14) is the same, but since the lag screw 19 cannot be operated later when screwed in, the tightening after fitting the tenon 32 to the mortise 31 is This is performed mainly by rotating the nuts 14a and 14b with washers on the through column 30 side with a tool.

As described above, the axial line of the drawing hardware 10 is shifted without shifting the positions of the mortise 31 and the mortise 32 even at the places where the two horizontal members 2 are attached orthogonally, such as a beam and a trunk difference. And can be joined by tenon fitting. The tenon is light and the structure for resisting the pulling is also the thin through hole 15 and the through hole 16 for placing the attracting hardware 10, so that the loss of material is markedly larger than the conventional tenon fitting structure. Few.
In the fifth embodiment, the case where the beam 2a and the trunk difference 2b are joined in the middle of the through column 30 has been described. However, as in the fourth embodiment (FIG. 9), the two horizontal members 2 are orthogonal to each other at the upper end of the column. The same applies to the case of joining.

  17 and 18 show a joint structure based on the same technical idea as a seventh embodiment. In this case, the other structural material 1 is the same as the horizontal member 2 and is a beam divided in the middle (beam portions A and B). A mortise 3 is formed in the end surface of the beam portion A, and a mortise 4 is formed in the end surface of the beam portion B opposite thereto. The configurations of the mortise 3 and the mortise 4 are the same as those in the first embodiment.

In the beam portion A, an insertion hole 22 is formed in the bottom surface 5 of the mortise 3 in the axial direction of the material, and a lag screw 19 integrated with the intermediate screw cylinder 20 is screwed and fixed thereto. The proximal end side of the middle screw cylinder 20 is open at the center of the mortise 31. The lag screw 19 integrated with the middle screw cylinder 20 constitutes one attracting metal 10.
In the beam portion B, a through hole 16 is formed in the central portion of the tenon 4 in the axial direction of the material, and an operation hole 17 is formed at the tip thereof, and these are in communication.

The long screw rod 11 is inserted into the through hole 16 of the beam portion B, and the washer 12 with rubber and the nut 13 are screwed to the tip portion to constitute the other attracting metal 10.
After fitting the tenon 4 of the beam part B into the tenon hole 31 of the beam part A from above and securely fitting it, the long screw rod 11 is pushed out from the operation hole 17 of the beam part B to the base end side. By moving, the base of the long screw rod 11 is sufficiently screwed into the intermediate screw cylinder 20 on the beam portion A side. Next, the beam portion A and the beam portion B are drawn and tightened by tightening the nut 13.

Even in such a joint structure, the load in the vertical direction is dispersed and supported by the taper arrangement of the side wall portions 6 and 7 of the mortise 31 and the bottom wall portion 8 formed by a curved surface with a gently raised center, Further, the pulling force of the beam portion B with respect to the beam portion A is resisted by the attracting hardware 10 (the hardware including the lag screw 19 and the long screw rod 11) arranged close to the axis of the material. The joint processing of No. 4 may be shallow, and the loss of material at the joint portion is extremely reduced.
In addition, the resistance to the pulling force by the pulling hardware 10 is close to the axis of the beam portions A and B, so that the twist between the beam portion A and the beam portion B hardly occurs, and the resistance to the pulling force is most effective. To be done. When the height of the beam is large, if the hardware 10 to be pulled out is provided in two or several stages as in the fourth and fifth embodiments, the function of preventing twisting and the like is enhanced.

  The embodiment has been described above. The structure of the attracting hardware 10 to be used is not limited to that shown in the drawing, and it may be adopted as long as it can exert an attracting force and is arranged in the material along the axial direction of the material. it can.

Plan view (Example 1). The perspective view of the joint location shown disassembled (Example 1). Front view of a mortise (Example 1). The perspective view of a drawing metal object (Example 1). The perspective view which sees through and shows a drawing state (Example 1). Plan view (Example 2). The perspective view which sees through and shows a drawing state (Example 2). The perspective view for demonstrating a drawing state (Example 3). The perspective view of the joint location shown disassembled (Example 4). The perspective view which sees through and shows a drawing state (Example 4). The perspective view of the joint location shown disassembled (Example 5). The perspective view shown through a drawing state (Example 5). Plan view (Example 5). Plan view (Example 5). The top view which took out the attracting metal part (Example 6). The perspective view which took out the attracting metal part (Example 6). The perspective view of the joint location shown disassembled (Example 7). The top view for demonstrating a drawing state (Example 7).

Explanation of symbols

1 Horizontal materials (other structural materials)
2 Horizontal member 3 Mortise 4 Mortise 5 Bottom 6 Side wall (left)
7 Side wall (right)
8 Bottom wall portion 9 Opening 10 Pulling object 11 Long screw rod 12 Washer with rubber 13 Nut 14 Nut with washer 15 Through hole 16 Through hole 17 Operation hole 18 Male screw 19 Lug screw 20 Medium screw cylinder 21 Washer bolt 22 Insertion hole 23 Tool hanger 24a, 24b Medium thread rod 25 Short thread cylinder 26 Short thread rod 27 Pillar (other structural materials)
28 Mortise 29 Mortise 30 Through pillars (other structural materials)
31 (31a, 31b) Mortise 32 (32a, 32b) Mortise 33 Upper wall part 34 Long screw cylinder with hole 35 Through hole

Claims (4)

  This is a joint structure where the end of the horizontal member is abutted against another structural member, and the fitting structure of the shallow wide mortise and the corresponding tenon and the inside of the horizontal member is connected to the horizontal member. The mortise has at least a bottom surface, side wall portions on both sides and a bottom wall portion connecting them, and the both side walls are wide at the top. A narrow taper arrangement at the bottom, the bottom wall is formed with a curved surface with a gently raised center, and is also connected gently to both side walls. Junction structure.   The other structural material is a horizontal member, and a mortise is formed on the side surface or end surface of the structural material with the upper end portion opened upward, and there is a mortise and a tenon to form a groove fitting. The joint structure of the horizontal member of Claim 1 and another structural material.   2. The horizontal member and other structural member according to claim 1, wherein a plurality of mortises and tenons are independently formed on the upper and lower sides, and each of them is provided with a drawing structure by a drawing metal. Bonding structure with.   The other structural material is also a horizontal member, and is a joint structure where the ends of the horizontal member are abutted and joined to each other. The interior of the frame is composed of an attracting structure with an attracting metal that is passed through in the axial direction of the horizontal frame, and the mortise has at least a bottom surface, side walls on both sides, and a bottom wall that connects these, The side walls have a tapered arrangement with the gap between the upper side and the lower side being narrow, and the bottom wall part is formed with a curved surface with a gently raised center, and is also connected to both side walls gently. Joint structure between frames.

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