JP2022158445A - Joint metal, and joint structure using the same - Google Patents

Abstract

To diversify a joint of components such as column materials and beam materials with each other and reuse demolished components even after locking.SOLUTION: A joint metal comprises a housing 12 fixed to one component 51a and a connection shaft 13 inserted into the housing 12 to be held. The housing 12 is provided with: a front face plate 21 being in contact with one component 51a or the other component 51b; a rear face plate 22 provided with a space at a rear part of the front face plate 21; and a window portion 23 exposing the space between the front face plate 21 and the rear face plate 22. An insertion hole 26 into which the connection shaft 13 is inserted to be held is formed in the front face plate 21 and the rear face plate 22. A male screw 31 is formed on an outer peripheral face of the connection shaft 13, and a fastening portion 32 whose diameter is larger than that of the connection shaft 13 and into which a rotary force to the connection shaft 13 is input is provided in an intermediate portion in a longer direction. A lower nut 33 and an upper nut 34 are held in this order from the rear face plate 22 side to the male screw 31 in a part at the rear face plate 22 side with respect to the fastening portion 32 in the connection shaft 13.SELECTED DRAWING: Figure 14

Description

TECHNICAL FIELD The present invention relates to a joining metal fitting for joining structural members such as columns and horizontal members in a wooden frame building, for example.

As disclosed in Japanese Patent Application Laid-Open No. 2002-200000, a structure using bolts is known as a joint structure between constituent members.

In this joint structure, the end of a beam that is tenon-joined to the side of a column is fixed with a bolt that extends in the longitudinal direction of the beam. In other words, the pillar and the beam are provided with an insertion hole extending straight from the surface of the pillar opposite to the connecting surface of the beam to the inside of the end of the beam. A nut hole into which a nut is inserted is formed downward from the upper surface at a position corresponding to the end of the insertion hole at the end of the beam, and the insertion hole is in a penetrating state. When joining, a bolt is inserted through the insertion hole from the column side, the tip of the bolt protrudes into the nut hole, and a nut is screwed onto the tip. Rotating and tightening the bolt head creates a strong joint between the column and the beam.

Thus, in a joint structure using bolts, it is common to tighten by rotating the head of the bolt, and the head of the bolt needs to be open to the external space of the constituent members.

For this reason, there are restrictions on structures that can be joined in a joint structure using ordinary bolts. For example, when joining structural members made of shaft members such as columns and horizontal members at right angles, it can be done as in Patent Document 1, but a shaft member perpendicular to them is sandwiched between shaft members extending in the same direction. This type of joining is difficult.

Also, since the bolt head is at the end, another connection is not possible using that bolt portion.

Furthermore, although it is desirable to prevent loosening in a joint structure using bolts, the means for preventing loosening at the portion corresponding to the head of the bolt is limited to the loosening preventive washer. However, when the components to be joined are made of wood, the locking washer is not suitable because it sinks into the wood. Moreover, since the embedment damages the wood, it becomes impossible to dismantle and reuse the constituent materials. In the first place, if a locking washer is used, separation after joining may not be possible in some cases.

Japanese Utility Model Publication No. 6-27684

SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to enable joining that has been impossible hitherto, to prevent loosening, and to reuse constituent materials.

The means for that purpose is a joint metal fitting that is fixed to one of the constituent members and joins to the other constituent member, and includes a housing that is fixed to the one constituent member and a housing that is inserted and held in the housing. A connecting shaft is provided, and the housing includes a front plate that abuts on the one component or the other component, a rear plate provided with a space behind the front plate, the front plate and the rear a window portion exposing the space between the front plate and the rear plate; an insertion hole through which the connecting shaft is inserted is formed in the front plate and the rear plate; A fastening portion having a diameter larger than that of the connection shaft and receiving a rotational force to the connection shaft is provided at an intermediate portion in the longitudinal direction of the connection shaft. It is a joint metal fitting in which a lower nut and an upper nut are held in order from the rear face plate side on a male screw.

In this configuration, the male screw of the connecting shaft extending from the housing fixed to one component is screwed into the other component through the front plate, and the connecting shaft is inserted by tightening the fastening portion through the window. A fastened state is obtained in which the front plate or the like is sandwiched by moving to the other component side in the hole. This state is maintained while the rear plate is pushed by the loosening prevention operation performed later by the lower nut tightened toward the rear plate and the upper nut superimposed on the lower nut. As a result, the connecting shaft is in a state of being stretched in two places, that is, the portion in contact with the front plate and the portion in contact with the rear plate in the housing, and displacement is restricted.

According to this invention, since it is configured to rotate and join the fastening portion provided on the connecting shaft, there is no limit to the range of application unlike the conventional joint structure using ordinary bolts, and various joint structures can be used. Obtainable. Moreover, since the portion that extends and joins to another component has a male thread, it is possible to further connect using the connecting shaft.

Further, since the lower nut and the upper nut provided on the connecting shaft perform loosening prevention as a so-called double nut, the tightened state of the fastening portion can be maintained and the durability of the joined state can be enhanced. In addition, since a double nut is used for locking, it is possible to separate and prevent damage even if the constituent material is wood, unlike the case where locking is performed using a locking nut or the like. In other words, when the structural members are structural members that form the framework of a wooden framework building, it is possible to dismantle the structure, and also to reuse and reconstruct the separated structural members.

The front view of a joining metal fitting. The perspective view of a joining metal fitting. AA sectional view of FIG. The front view of a connecting shaft. FIG. 3 is a cross-sectional view of the metal joint of FIG. 1 taken along line B-B of FIG. 3; Explanatory drawing explaining the relationship between a housing|casing and a connection shaft. The perspective view of a joining metal fitting. Sectional drawing of a joining metal fitting. FIG. 4 is a partially broken front view of an outer wall panel using a joint metal fitting; The top view and sectional drawing of the e part of FIG. FIG. 10 is a perspective view of the panels of FIG. 9 before joining; Sectional drawing before assembly of a shaft panel. Sectional drawing which shows the action state of a joining metal fitting. Sectional drawing which shows the joining state by a joining metal fitting. Sectional drawing before joining of panels. The front view of the axis panel using a joining metal fitting. FIG. 17 is an enlarged view of the main part of FIG. 16; Sectional drawing of the joining state by a joining metal fitting. FIG. 17 is a front view showing joining of the shaft panels of FIG. 16; The front view of the principal part of the outer wall panel using a joining metal fitting. Sectional drawing which shows the other usage condition of a joining metal fitting. Sectional drawing which shows the other usage condition of a joining metal fitting. The perspective view of the joining metal fitting which concerns on another example. FIG. 23 is a cross-sectional view of the metal joint shown in FIG. 23 ; Sectional drawing of the joining metal fitting which concerns on another example.

One mode for carrying out the present invention will be described below with reference to the drawings.

The joining hardware 11 is a joining hardware that is fixed to one of the constituent members and joins to the other constituent member. It is used for joining various members including so-called structural members that serve as frameworks. In the following description, a joint metal fitting 11 for joining components constituting a wooden framework building is shown.

The joining hardware 11 is made of metal, and has a housing 12 fixed to one component and a connecting shaft 13 that is inserted and held in the housing 12 and extends to the other component. The joint metal 11 is roughly classified into two types according to the manner of fixing to one component.

One joining metal fitting 11a is of a type that fixes the housing 12 to one component member 51a and the other component member 51b so as to be interposed between them. This type of joining hardware 11a is hereinafter referred to as a rear fixing type (see FIGS. 1, 2, and 10).

Another joining hardware 11b is of a type that fixes the housing 12 to the back side of one component 51a, that is, to the opposite side of one component 51a to the other component 51b. This type of metal joint 11b is hereinafter referred to as a front fixing type (see FIGS. 7 and 18).

In the description, first, the rear fixing type joining metal fitting 11a will be described, and then the front fixing type joining metal fitting 11b will be described, omitting overlapping portions.

FIG. 1 is a front view of a rear fixing type joining hardware 11a, and FIG. 2 is a perspective view thereof. FIG. 2 shows two views with different orientations, (a) and (b).

As shown in these figures, the housing 12 of the joint metal 11 has a rectangular parallelepiped appearance, and the end faces of shaft members 52 as structural members 51 made of square members such as columns and horizontal members of a wooden framework building. It is configured so that it can be fixed to Since the cross-sectional shape of the shaft member 52 illustrated in FIG. 2 is square, the surface of the housing 12 to which the shaft member 52 is fixed and the surface on the opposite side are square.

The rectangular parallelepiped housing 12 is hollow, and includes a front plate 21 that abuts on one component 51a or the other component 51b, a rear plate 22 provided with a space behind the front plate 21, and a front plate. It has a window portion 23 that exposes a space between 21 and the rear plate 22 .

1 and 2 is a rear fixing type joint metal 11a, the rear plate 22 is in contact with the shaft member 52 as one component 51a, and the front plate 21 is in contact with the other component 51b. will come into contact.

The square front plate 21 and rear plate 22 are joined by side walls 24 on two of the four sides that face each other. Side walls 24 are rectangular and set to a predetermined height. The two surfaces that do not have the side walls 24 are the windows 23 described above.

A plurality of ribs 25a and 25b are formed on the inner surface of the side wall 24, as shown in FIG. The ribs 25a and 25b are two end ribs 25a located at both ends of the side wall 24 and an intermediate rib 25b located in the middle of the side wall 24, and connect the front plate 21 and the rear plate 22 together. Since the window portion 23 is for enabling manipulation with respect to the internal space, the end ribs 25a are formed shorter than the intermediate ribs 25b. Also, the interval between the intermediate ribs 25b is set in consideration of the insertion and operation of the jig.

An insertion hole 26 through which the connecting shaft 13 is inserted is formed in the center of the front plate 21 and the rear plate 22 . The insertion hole 26 has a circular shape, and the size of the insertion hole 26 is sufficient as long as the connecting shaft 13 can be inserted therethrough.

The rear plate 22 is provided with a fixing portion that is fixed to one component 51a. The fixing portion in this example is a piece of inserting piece 27 which is inserted into an inserting groove 52a formed from the end surface of the shaft member 52 as indicated by the phantom line in FIG. The insertion piece 27 has a rectangular plate shape that fits in the shaft member 52 and is formed parallel to the surface having the window portion 23 . A plurality of through holes 27a provided in the insertion piece 27 are holes through which the drift pins 15 for fixing are inserted.

The housing 12 is manufactured by joining and integrating metal plates cut into a predetermined shape by welding or the like while holding the connecting shaft 13 .

The connecting shaft 13 held by the housing 12 is configured in the shape of a roughly cut bolt as shown in FIG. That is, the connecting shaft 13 has a male thread 31 on its outer peripheral surface, and a fastening portion 32 having a larger diameter than the connecting shaft 13 and receiving a rotational force to the connecting shaft 13 is provided at an intermediate portion in the longitudinal direction of the connecting shaft 13 . . The fastening portion 32 has a larger diameter than the insertion hole 26 of the front plate 21, and is formed in a hexagonal prism shape similar to a general nut. The fastening portion 32 is integral with the connecting shaft 13 and cannot rotate relative to it.

A lower nut 33 and an upper nut 34 are held in order from the rear plate 22 side on the male screw 31 at the portion of the connecting shaft 13 closer to the rear plate 22 than the fastening portion 32 . These lower nut 33 and upper nut 34 are composed of general nuts.

Since the lower nut 33 and the upper nut 34 are provided, the height of the side wall 24 in the housing 12, that is, the distance between the front plate 21 and the rear plate 22 is set as shown in FIG. In other words, the height is such that at least the fastening portion 32, the lower nut 33, and the upper nut 34 can be accommodated with a margin, and in a state in which the upper nut 34 and the lower nut 33 are in contact with the fastening portion 32, the The height is such that the required amount of movement can be obtained by FIG. 5 is a cross-sectional view of the metal joint 11 taken along line BB in FIG.

The relationship between the distance between the front plate 21 and the rear plate 22 and the connecting shaft 13 and the connecting shaft 13 will be explained. As shown in FIG. is longer than the distance L2 between and both end portions of the connecting shaft 13 protrude from the insertion holes 26 . Further, the length L3 of the portion of the connecting shaft 13 closer to the front end than the fastening portion 32, that is, on the side of the front plate 21, is a length that allows connection to the other component 51b even if the thickness t1 of the front plate 21 is subtracted. It is.

The length L4 of the rear end side of the surface (front surface 32a) of the fastening portion 32 on the front plate 21 side of the connecting shaft 13, that is, the portion on the rear surface plate 22 side is It is longer than the distance L2 between the front plate 21 and the rear plate 22 so that the rear end protrudes from the insertion hole 26 . The height h1 of the fastening portion 32 is a height at which a jig for rotation can be reliably applied, and similarly, the heights of the lower nut 33 and the upper nut 34 are also at a height at which the jig can be rotated one by one.

As for the insertion piece 27 provided on the rear plate 22, since the rear end portion of the connecting shaft 13 protrudes from the insertion hole 26 as described above, the insertion piece 27 extends from the insertion hole 26. is formed with a notch portion 27b for receiving the rear end portion of the connecting shaft 13. As shown in FIG.

Next, the front-fixing type joining hardware 11b will be described. FIG. 7 is a perspective view of a rear fixing type joint metal fitting 11b, and FIG. 8 is a sectional view thereof. (a) of FIG. 8 is a cross-sectional view of the upper surface of the front plate 21 (CC cross-sectional view of FIG. 7), and (b) of FIG. FIG. 8 is a vertical cross-sectional view (cross-sectional view taken along the line DD in FIG. 7) at the position of .

As shown in these figures, the housing 12 of the joint metal 11 has a rectangular parallelepiped appearance, and the side surface ( (longitudinal plane). That is, the front plate 21 and the rear plate 22 are rectangular in size to fit on the side surface of the shaft member 52 . The planar shape of the front plate 21 and the rear plate 22 may be square.

Since this joining hardware 11 is of the front fixing type, the front plate 21 comes into contact with one component 51a.

Of the four sides of the front plate 21 and the rear plate 22 forming a rectangle, a window portion 23 is formed in a portion having a long side, and a side wall 24 is formed on a short side.

A fixing piece 28 projecting outward is extended from the side of the front plate 21 having the side wall 24 . The fixed piece 28 is flush with the front plate 21 . This fixing piece 28 has a plurality of through holes 28a for inserting fixing members 16 such as nails and screws as fixing portions fixed to one component 51a.

An insertion hole 26 for inserting and holding the connecting shaft 13 is formed in the front plate 21 and the rear plate 22. The insertion hole 26 is a loose hole. That is, the size of the insertion hole 26 is larger than the size that the connecting shaft 13 can be fitted into, and is large enough to allow the necessary amount of relative displacement between the insertion hole 26 and the connecting shaft 13 . The reason why the insertion hole 26 is a loose hole is to absorb the deviation of the fixing position. The amount of relative displacement may be small, for example, about 3 mm.

Since the insertion hole 26 is a loose hole, it is preferable that a washer portion 32b having a diameter larger than that of the hexagonal fastening portion 32 is formed on the front surface 32a of the fastening portion 32 of the connecting shaft 13, that is, the surface facing the front plate 21. .

The same applies to the lower nut 33 held on the connecting shaft 13. The lower nut 33 in the illustrated example is drawn in a normal nut shape, but it may have a washer portion with a larger diameter than the hexagonal surface. .

Other points of the connecting shaft 13 are the same as those described above, but as described above, the front fixing type joint fitting 11 needs to pass through one of the constituent members 51a. The length is longer than in the case of the rear fixing type joining hardware 11a.

The joining hardware 11 configured as described above is used as follows to obtain a joining structure.

FIG. 9 shows an example of a joint structure, showing an outer wall panel 61 of a wooden framework building. The outer wall panel 61 is formed by joining a plurality of panels 62 and 63 together, and the joining hardware 11 is used not only for joining the panels 62 and 63 together but also for assembling the panels 62 and 63 . The joint metal 11 used in the joint structure of FIG. 9 is a rear fixing type joint 11a.

The outer wall panel 61 illustrated in FIG. 9 is constructed by joining three panels 62 and 63. A shaft panel 62 having pillar members 64 as vertically extending shaft members 52 at both left and right ends, and a pillar member Frame panels 63 having frame members 65 thinner than the members 64 at both left and right ends are alternately joined. 10(a) is a plan view of the upper joint portion of the shaft panel 62 and the frame panel 63, that is, the portion e in FIG. 9, and a cross-sectional view thereof is shown in FIG. 10(b). 11 shows a perspective view of a state in which the shaft panel 62 and the frame panel 63 are separated. 9 and 10, the peripheries of the shaft panel 62 and the frame panel 63 are surrounded by thick solid lines.

As shown in FIG. 10(b), the shaft panel 62 is constructed by joining a beam member 66 as a horizontal member to the upper end of the pillar member 64, and the frame panel 63 is configured by joining the beam member 66 to the upper end of the frame member 65. are joined together. Both panels 62 and 63 have a face member 67 made of structural plywood on the outer surface. A notch 67 a for opening the window 23 is formed in a portion of the face member 67 corresponding to the window 23 of the joint metal 11 .

The joining hardware 11 that joins the pillar material 64 and the beam material 66 is fixed to the end of the beam material 66 as one component 51a. The joining metal fitting 11 is fixed to the beam member 66 by inserting the insertion piece 27 of the joining metal fitting 11 into the insertion groove 52 a of the beam member 66 and driving the drift pin 15 .

The column member 64 as the other constituent member 51b incorporates and holds the connecting cylinder member 17 as a member to be screwed to the tip portion of the connecting shaft 13. As shown in FIG. The connecting tube member 17 is formed in a cylindrical shape and has a female thread on its inner peripheral surface that engages with the male thread 31 of the connecting shaft 13 . The connecting cylinder member 17 has a length corresponding to the thickness of the column member 64, and has female threads 17a extending from the end faces toward the intermediate point on both sides in the longitudinal direction. A through hole 17b is formed at the intermediate point in a direction orthogonal to the longitudinal direction of the connecting cylinder member 17, that is, the direction in which the female screw 17a extends. The through hole 17 b is a portion into which the drift pin 15 is inserted. By driving the drift pin 15 into the column member 64 while the connecting tube member 17 is inserted, the coupling tube member 17 is integrally connected to the column member 64 . be.

As shown in FIG. 12, the joining of the beam 66 and the column 64 is performed by retracting the tip of the connecting shaft 13 of the joining metal fitting 11 as much as possible, and then abutting the beam 66 and the column 64 to join. The shaft 13 is screwed into the internal thread 17a of the connecting cylinder member 17 built into the column member 64. As shown in FIG. The screwing operation is performed through the window portion 23 of the housing 12 .

By tightening the fastening portion 32 of the connecting shaft 13 , the front end portion of the connecting shaft 13 is screwed into the connecting cylinder member 17 as shown in FIG. 13 to tighten the front plate 21 . As a result, the fastening of the connecting shaft 13 to the connecting cylinder member 17 is completed, and the beam 66 and the column 64 are joined together. At this time, the rear plate 22 of the joint metal fitting 11 has the same size as the end surface of the beam member 66 and is in surface contact, and the entire front plate 21 is in surface contact with the side surface of the column member 64, so that a strong joint state is obtained. .

After that, the lower nut 33 and the upper nut 34 are rotated and moved toward the rear plate 22 as indicated by the phantom lines in FIG. First, the lower nut 33 is tightened onto the rear plate 22 , and then the upper nut 34 is tightened onto the lower nut 33 . In this state, the loosening prevention operation is performed by slightly rotating the lower nut 33 in the opposite direction while fixing the upper nut 34 . By the locking operation, a tension force acts between the upper nut 34 and the lower nut 33 to complete locking.

The frame panel 63 has a frame member 65 that is thinner than the column member 64 in a portion corresponding to the column member 64 of the shaft panel 62 . No special joints are required. The joint hardware 11 of the frame panel 63 is, so to speak, only fixed to the beam member 66 . As shown in FIG. 15 , the tip of the connecting shaft 13 of the joint metal 11 passes through the frame member 65 . The length of the tip side portion of the connecting shaft 13 is formed to be longer by the thickness of the frame member 65 than in the case of directly joining the components 51 to be fastened.

The joint between the shaft panel 62 and the frame panel 63 is similar to the above-described joint between the beam member 66 and the column member 64, and the joint metal fittings 11 of the frame panel 63 are used. That is, in this case, the frame panel 63 is one component 51a, and the shaft panel 62 is the other component 51b.

When joining, the shaft panel 62 and the frame panel 63 are joined together, and a jig is inserted through the window portion 23 to rotate the fastening portion 32 of the connecting shaft 13 so that the tip portion of the connecting shaft 13 is attached to the column member 64 of the shaft panel 62 . It is screwed into the connecting cylinder member 17 built in the . After fully tightening, perform the locking operation in the same manner as described above.

Next, an example of another joint structure is shown.

FIG. 16 is a shaft panel 62 of a wooden framework building. The shaft panel 62 includes two left and right pillars 64, a beam 66 at the upper end, a base 68 at the lower end, and an inner beam 69 that extends horizontally between the pillars 64 in parallel with the beams 66, An inner pillar member 70 is provided between the inner beam member 69 and the base 68 in parallel with one of the pillar members 64 . A face member 67 is fixed between the beam member 66 and the inner beam member 69 so as to close the space. In addition, at the longitudinal intermediate portion of the face member 67, that is, the longitudinal intermediate position of the beam member 66 and the inner beam member 69, and the longitudinal intermediate position of the inner pillar member 70, the beam member 66 and the inner beam member are respectively provided. 69, a bundle member 71 is provided to connect the pillar member 64 and the inner pillar member 70, dividing the face member 67. As shown in FIG. The thickness of the bundle material 71 is the same as that of the pillar material 64 or the like that supports the load.

A support frame 72 having the same thickness as the frame member 65 of the above-mentioned example is installed vertically and horizontally in the space other than the portion having the face member 67 in the area surrounded by the inner beam member 69, the inner column member 70, the base 68, and the column member 64. A support frame 72 is also provided on the inner surfaces of the column material 64 and the base 68 .

For this shaft panel 62, in addition to the rear fixing type joining metal fittings 11a, the front fixing type joining metal fittings 11b are also used.

The rear fixing type joint metal fittings 11a are fixed to both longitudinal ends of the inner beam member 69 and to both longitudinal ends of the inner pillar member 70, respectively, and are coupled to the connecting cylinder members 17 built in the respective opposing portions ( See Figure 17).

The front-fixing type joining hardware 11b is fixed to the side surface of the component 51, that is, the surface along the longitudinal direction of the component 51, and is coupled to the component 51 that is positioned across the component 51.

An example of a portion where the joint metal 11b is used is a position near the middle in the longitudinal direction of the pillar member 64 that does not have the inner pillar member 70 . As shown in FIGS. 17 and 18, a joining metal fitting 11b is fixed to a support frame 72 as one component 51a, and a connecting tubular member incorporated in a column member 64 as the other component 51b overlapping the support frame 72. A connecting shaft 13 is coupled to 17 .

Another example is the bundle 71 portion that joins the inner pillar 70 and the pillar 64 . The fixing position of this joining metal fitting 11b is the same height as the joining metal fitting 11b for joining the pillar member 64 that does not have the inner pillar member 70 . As shown in FIG. 17, the inner pillar member 70 as one constituent member 51a and the pillar member 64 as the other constituent member 51b are joined via the bundle member 71. As shown in FIG.

As shown in FIG. 19, the shaft panel 62 constructed in this manner is joined to a frame panel 63 having a front-fixed joint metal fitting 11b at a position corresponding to the front-fixed joint metal fitting 11b. .

The joint structure shown in FIG. 20 shows an example in which an outer wall panel 61 is constructed by directly joining inner beam members 69 to both side surfaces of a column member 64 . In this case, the two inner beam members 69 are one of the constituent members 51a, and the column member 64 positioned between them is the other constituent member 51b common to both.

FIG. 21 shows another mode of use of the front fixing type joining hardware 11b. That is, the joining hardware 11b is fixed to the frame member 65 as one of the component members 51a, and the frame member 65 as the other component member 51b is joined with the side surfaces thereof in contact with each other. Since the frame member 65 as the other constituent member 51b is thin and cannot contain a member for fastening such as the connecting cylinder member 17, the seat nut 18 is fixed to the opposite surface of the frame member 65 to be joined. A through hole 18a is formed in the seat portion of the seat nut 18 for inserting a fixing member 16 such as a nail or a screw.

The usage of the front-fixing type joining hardware 11b shown in FIG. 22 is, for example, the case of joining a partition panel surrounded by a frame member 65 onto a drawer 74 on which a floor board 73 is placed. The joint metal 11b is fixed to a frame member 65 as one component 51a, and the connecting shaft 13 of the joint metal 11b is connected to a connecting cylindrical member 17 built in a large pulley 74 located across the floor plate 73.

FIGS. 23 to 25 show other examples of the front fixing type joining hardware 11b.

The joint metal 11 b of FIG. 23 has a through hole 29 , which is a fixing portion provided on the front plate 21 , formed in the inner region of the housing 12 . As shown in FIG. 24( a ), the through holes 29 are formed at four locations surrounding the insertion hole 26 . FIG. 24(a) is a cross-sectional view taken at the upper surface position of the front plate 21 in the housing 12, and (b) is taken at the position having the through hole 29 between the end rib 25a and the intermediate rib 25b. It is a vertical cross-sectional view. A cutout window 22 a is formed at a position corresponding to the through hole 29 in the rear plate 22 for operation of driving the fixing member 16 through the through hole 29 .

That is, when the housing 12 has the fixing piece 28 as in the above example, the fixing piece 28 may interfere with the fixing at the desired position. Even narrow parts such as corners and internal corners can be fixed.

FIG. 25 shows another example of the form of the housing 12. As shown in FIG. That is, the housing 12 is closed on three sides with side walls 24 and has a window 23 on one side. FIG. 25(a) is a cross-sectional view taken at the upper surface position of the front plate 21 in the housing 12, and (b) is taken at the position having the through hole 29 between the end rib 25a and the intermediate rib 25b. It is a vertical cross-sectional view.

The joint hardware 11 can be used as in the previous examples to obtain a variety of joint structures. In the joined state, the housing 12 fixed to one component 51a holds the connecting shaft 13, and the held connecting shaft 13 is fastened to the other component 51b while tightening the front plate 21 of the housing 12. be. Moreover, the rear end portion of the connecting shaft 13 is restricted by the rear plate 22 and prevented from rotating by the lower nut 33 and the upper nut 34 . In other words, the connecting shaft 13 extending so as to connect the component members 51 to be connected is in a state where the front end portion is tightened with the other component member 51b, and the rear end portion is in a state of being stretched inside the housing 12. locking is done. Therefore, it is possible to favorably maintain a strong fixed state.

Moreover, since the tightening of the fastening portion 32 can be performed from the window portion 23 on the side surface of the housing 12, it is possible to join in a manner that has been impossible until now. Even 61 or the like can be easily joined. For this reason, convenience can be greatly improved, and it also contributes to the development of new structural materials.

In addition, it is possible to prevent the joining hardware 11 from protruding outside.

Further, since the connecting shaft 13 is prevented from loosening by a so-called double nut consisting of the lower nut 33 and the upper nut 34 provided at the rear end of the connecting shaft 13, the joined components 51 can be separated. Moreover, even if the loosening prevention is performed, the structural member 51 is not damaged. Therefore, it can be dismantled, moved, rebuilt, rearranged, and reused as needed. In particular, if the structural material 51 constitutes a wooden framework building, it is very beneficial because it facilitates relocation, repair, partition change, etc., and also suppresses the generation of industrial waste.

The above configuration is one form for carrying out the present invention, and the present invention is not limited to the configuration described above, and other configurations can be employed.

For example, joint hardware may be used to join wooden components as well as other materials such as, for example, light steel. In addition to buildings, it can also be used for the construction of furniture, fixtures, and the like.

The fixing portion provided in the housing 12 can be appropriately configured according to the constituent materials.

The housing 12 may be configured to be embedded inside the component, and a plurality of connecting shafts 13 may be provided.

DESCRIPTION OF SYMBOLS 11... Joint metal 12... Case 13... Connecting shaft 17... Connecting cylinder member 17a... Female screw 21... Front plate 22... Rear plate 23... Window part 26... Insertion hole 27... Insertion piece 28a, 29... Through hole 31... Male screw 32 ...Fastening part 33...Lower nut 34...Upper nut 51a...One component 51b...The other component

Claims (7)

A joining metal that is fixed to one component and joins to the other component,
A housing fixed to the one component, and a connecting shaft inserted and held in the housing,
The housing includes a front plate in contact with the one component or the other component, a rear plate provided with a space behind the front plate, and between the front plate and the rear plate. Having a window that exposes the space,
An insertion hole through which the connecting shaft is inserted is formed in the front plate and the rear plate,
The connecting shaft has a male thread on its outer peripheral surface,
A fastening portion having a diameter larger than that of the connecting shaft and receiving a rotational force with respect to the connecting shaft is provided at an intermediate portion in the longitudinal direction of the connecting shaft,
A joining hardware in which a lower nut and an upper nut are held in order from the rear plate side on the male screw of the portion of the connecting shaft closer to the rear plate than the fastening portion. The rear plate includes a fixing portion fixed to the one component,
2. The joint metal according to claim 1, wherein said fixing portion is an insertion piece inserted into an insertion groove formed from an end face of a wire as at least a part of said one component. The front plate includes a fixing portion fixed to the one component,
2. The joining hardware according to claim 1, wherein the fixing portion is a through hole into which the fixing member is inserted. 4. The joining metal fitting according to claim 1, wherein said insertion hole is a loose hole. 2. A connecting cylinder member which is formed in a cylindrical shape having a female thread on an inner peripheral surface thereof to be screwed with the male thread, and which is incorporated and held in the other component, as a member to be screwed to the tip of the connecting shaft. 5. The joint hardware according to any one of claims 4 to 4. A joint structure of a wooden frame building in which constituent members of a wooden frame building are joined together by using the joint metal according to any one of claims 1 to 5. Using the joint metal according to any one of claims 1 to 5, the fastening state in which the front plate is sandwiched by tightening the fastening portion is sequentially tightened toward the rear plate. A joint structure that is held by locking with the lower nut and the upper nut.

Images