JP4960166B2 - Withdrawal hardware - Google Patents

Description

  The present invention relates to an attracting metal, and more particularly to an attracting metal that is used in combination with a bolt member and used to attract the frame member at a joint portion of the frame member of the wooden building.

  Used to increase the joint strength by pulling one frame member to the other frame member or pulling a pair of frame members together at the joint part of the frame member such as foundation, pillar, beam, horizontal member of wooden building As the attracting metal to be used, a battledore bolt is generally used (see, for example, Patent Document 1).

  The wing plate bolt is formed by welding and integrating the other end portion of a rod-shaped bolt having a male screw portion at one end to a flat plate-like wing plate portion having a bolt fastening hole. For example, while inserting a rod-like bolt through a through hole provided in one framework member, align the bolt fastening hole with the through hole provided in the other framework member along the side face of the other framework member, Using a bolt member such as a bolt or nut, the wing plate is fastened and fixed to the other frame member, and the nut is screwed into the male screw at the tip of the rod-shaped bolt protruding from the through hole on the opposite side of the one frame member. By tightening, the one frame member is drawn to the other frame member.

In addition, the battledore bolt takes time and effort to firmly join the rod-shaped bolt to the battledore portion by welding, and the rod-shaped bolt is integrally attached to the battledore portion and becomes bulky, and the length of the joined rod-shaped bolt is reduced. It is difficult to adjust. For this reason, it is formed as a separate body from the bolt member, has a compact shape, and can be manufactured by pressing or drilling without welding. An attracting metal piece having an L-shape consisting of a long side portion has also been developed (see, for example, Patent Document 2).
JP 2006-152596 A Design Registration No. 933996

  In the attracting metal object described in Patent Document 2, the bolt members inserted into the through holes provided in the pair of frame members at the joint portions of the frame members are respectively formed on the long side portion and the short side portion using a nut or the like. The bolt fastening hole of the short side portion is formed in the central portion of the short side portion, so that the L-shaped bent portion has a large bend. Bending stress due to moment is applied. For this reason, in the attracting metal object described in Patent Document 2, a pair of belt-shaped bulging ribs that protrude inward are continuously provided so as to straddle the short side and the long side with the L-shaped bent portion interposed therebetween. It is formed on both sides of the center line in the longitudinal direction, and is configured to be able to resist a large bending stress by bending rigidity due to a three-dimensional cross-sectional shape having two bulging convex portions.

  On the other hand, in the attracting metal described in Patent Document 2, the tightening force by tightening the bolt member fastened to the bolt tightening hole is concentrated on the peripheral portion of the bolt tightening hole, and the short side portion or the long side portion Therefore, it is desirable to develop a pull-up hardware that makes it possible to draw the frame member in a more stable state by efficiently using the entire short side and long side. ing.

  The present invention has been made paying attention to such a problem, and can be easily manufactured from a metal plate without performing welding, and the fastening force by the bolt member can be reduced between the short side portion and the long side portion. An object of the present invention is to provide an attracting metal which can be transmitted to the whole in a well-balanced manner and can attract the frame member in a more stable state.

  The present invention is used in combination with a bolt member, and is a drawing metal used for drawing a framework member at a joint portion of a framework member of a wooden building, and by pressing a strip-shaped metal plate, The short side portion and the long side sandwiching the L-shaped bent portion while being formed so that the longitudinal cross-sectional shape along the longitudinal direction has an L shape composed of a short side portion and a long side portion A pair of belt-like bulging ribs protruding inward and extending in the longitudinal direction on both sides sandwiching the center line in the longitudinal direction are formed so as to straddle the portion. The cross-sectional shape of the formed portion has a shape having two bulging convex portions, and the short side portion and the long side portion are in the portion between the pair of belt-like bulging ribs. The bolt insertion holes are each formed as an opening, and the bolt By providing a hardware drawn timber is fastened to the top surface portion of the strip protruding rib is obtained by achieving the above object.

  And according to the drawing metal of this invention, it is preferable that the top | upper surface part of the said strip | belt-shaped bulging rib located in the outer peripheral part of the said bolt insertion hole is chamfered flatly.

  According to the attracting metal of the present invention, it is preferable that the bolt insertion hole is formed so as to bite into a part of the belt-like bulging ribs on both sides.

  Furthermore, according to the attracting metal of the present invention, the back side bottom surface of the central portion between the pair of belt-like bulging ribs and the back side bottom surface opposite to the central portion sandwiching the belt-like bulging ribs are the same. It is preferable to be formed so as to be arranged on the surface.

  According to the attracting metal of the present invention, it can be easily manufactured from a metal plate without performing welding, and the fastening force by the bolt member is transmitted in a balanced manner to the entire short side and long side, Further, the frame member can be pulled in a stable state.

  As shown in FIG. 1, the attracting hardware 10 according to a preferred embodiment of the present invention is a frame member of a wooden building. For example, when the column 12 is joined to the beam 11 in a standing state, the column 12 is joined to the beam 11. It is used to attract and obtain a strong joint structure.

  The attracting hardware 10 according to the present embodiment is used in combination with the bolt member 13, and is the same as a wing plate bolt used for attracting the column 12 to the beam 11 as a framework member, for example, at a joint portion between the beam 11 and the column 12. 2 to 4, the metal plate 14 in the shape of a strip plate is pressed so that the longitudinal cross-sectional shape along the longitudinal direction X is a short side portion. 15 and a long side portion 16 are formed so as to be L-shaped and continuously straddling the short side portion 15 and the long side portion 16 with the L-shaped bent portion 17 interposed therebetween, A pair of belt-like bulging ribs 18 projecting inward are formed extending in the longitudinal direction X on both sides of the center line C in the longitudinal direction X, so that the portion where the belt-like bulging ribs 18 are formed is formed. The cross-sectional shape is two bulging protrusions 9, and the short side portion 15 and the long side portion 16 are formed with bolt insertion holes 20 a and 20 b in openings between the pair of belt-like bulging ribs 18. The member 13 is fastened to the top surface portion of the belt-like bulging rib 18.

  Moreover, in the drawing metal object 10 of this embodiment, the top | upper surface part of the strip | belt-shaped bulging rib 18 located in the outer peripheral part of bolt insertion hole 20a, 20b is chamfered flat by the chamfering part 21a, 21b, and bolt insertion hole 20a , 20b are formed so as to bite into part of the belt-like bulging ribs 18 on both sides.

  In the present embodiment, the metal plate 14 for forming the attracting metal object 10 has a substantially vertical strip-like planar shape with a thickness of about 2.3 to 6 mm and a width of about 30 to 80 mm, for example. It is cut and processed. The metal plate 14 is provided with an L-shaped vertical cross-sectional shape composed of a short side portion 15 and a long side portion 16 by, for example, pressing with a known press device using a mold, and a short side The attracting metal object 10 in which the pair of belt-like bulging ribs 18 are continuously formed so as to straddle the portion 15 and the long side portion 16 is easily press-molded.

  Here, in the present embodiment, in the attracting metal 10, the short side portion 15 having a length of about 40 mm and the long side portion 16 having a length of about 100 mm are curved with a curvature radius of about 4 to 10 mm, for example. It is formed so as to have an L-shaped vertical cross-sectional shape that is bent at a right angle via the bent portion 17 and continuous.

  Further, the pair of belt-like bulging ribs 18 has a height of, for example, about 5 to 8 mm and a width of about 12 mm, and bulges inside the L-shape with a substantially arc cross-sectional shape or a substantially rectangular cross-sectional shape. It is formed as a strip-shaped convex part. The pair of belt-like bulging ribs 18 is, for example, at an interval between the centers of about 15 to 17 mm, with an intermediate flat portion 22 having a width of about 4.5 mm interposed in the center, and the length of the short side portion 15 and the long side portion 16. On both sides of the center line C in the direction X, it extends in parallel so as to straddle the short side portion 15 and the long side portion 16.

  Further, in the present embodiment, the pair of belt-like bulging ribs 18 has side edges on the outer sides of the belt-like bulging ribs 18 at the short side portion 15 over the entire length thereof, for example, at a height of about 8 mm. Is formed so as to also serve as a side edge portion of the short side portion 15. In the long side portion 16, the pair of belt-like bulging ribs 18 is provided over substantially the entire length of the long side portion 16, leaving the tip portion on the opposite side to the bent portion 17, and The height of the intermediate portion in the direction X through the top inclined portion 18a so that, for example, a portion having a height of about 8 mm on the bent portion 17 side becomes a portion having a height of about 5 mm on the distal end portion side. (See FIGS. 3 (a) and 4 (b)). In the high portion on the bent portion 17 side with the top inclined portion 18a interposed therebetween, the outer side edge portion of each belt-like bulging rib 18 is formed so as to also serve as the side edge portion of the long side portion 16. Thus, in a portion having a low height opposite to the bent portion 17, a flat projecting portion 23 is provided so as to project outward from the side edge portion of each band-shaped bulging rib 18 (FIGS. 3A to 3 ( c)).

  And in this embodiment, the back side bottom face 22a of the center part by the intermediate | middle flat part 22 between a pair of strip | belt-shaped bulging ribs 18, and the back side bottom face 18b, 23a on the opposite side to the center part which pinched | interposed the strip | belt-shaped bulging rib 18 Are drawn on the same surface P by pressing (see FIGS. 3B, 3C, and 4A). That is, in the short side portion 15, the back side bottom surface 22 a of the intermediate flat portion 22 and the lower end surface (back side bottom surface) 18 b of the outer end portion of each belt-like bulging rib 18 are arranged on the same surface P. In the long side portion 16, the back side bottom surface 22 a of the intermediate flat portion 22 and the lower end surface (back side bottom surface) of the outer end portion of each belt-like bulging rib 18 in the portion where the height of the belt-like bulging rib 18 is high. ) 18b is disposed on the same surface P, and the bottom surface 22a of the intermediate flat portion 22 and the bottom surface 23a of the overhang portion 23 on the outer side of each belt-like bulging rib 18 in the portion where the height of the belt-like bulging rib 18 is low. Are arranged on the same plane P.

  In the present embodiment, the metal plate 14 is pressed to form the L-shaped vertical cross-sectional shape, and the bolt insertion holes 20a and 20b are formed to be opened. Such drilling can be easily performed using various known metal drilling devices. For example, circular bolt insertion holes 20a and 20b having a diameter of about 13 mm are centered in the longitudinal direction X. In the state of being arranged on the center line C, one opening is formed in each of the short side portion 15 and the long side portion 16. Here, the bolt insertion hole 20a is formed in an approximately central portion of the short side portion 15 so as to protrude outward from the intermediate flat portion 22 and bite into the inner base end portions of the belt-like bulging ribs 18 on both sides. . Further, the bolt insertion hole 20 b is formed in the portion on the distal end side of the long side portion 16 so as to protrude outward from the intermediate flat portion 22 and bite into the inner base end portion of the belt-like bulging rib 18.

  Furthermore, in this embodiment, flat chamfering by the chamfered portions 21a and 21b is performed on the top surface portion of the belt-like bulging rib 18 located at the outer peripheral portions of the bolt insertion holes 20a and 20b. Such chamfering can be easily performed using various known metal polishing apparatuses. By forming the chamfered portions 21a and 21b on the top surface portion of the belt-like bulging rib 18, the head portion and the nut of the bolt constituting the bolt member 13 can be connected to the top surface portion of the belt-like bulging rib 18 via a flat surface. It is possible to tighten firmly in a stable state.

  In the attracting member 10 of the present embodiment having the above-described configuration, a bolt insertion hole 20b formed in the long side portion 16 is provided in the column 12 as shown in FIG. 1, for example, as in the conventional L-shaped attracting member. The attracting member 10 is fastened and fixed to the side surface of the column 12 by the bolt member 13 inserted from the opposite side of the column 12 so as to match the through hole, and the bolt member 13 inserted from the opposite side of the beam 11 is fixed to the short side portion. The bolt 12 is fastened to the bolt insertion hole 20 a formed in 15 and the bolt member 13 is further tightened to draw the column 12 to the beam 11, thereby forming a structure of a strong joint between the column 12 and the beam 11.

  And according to the drawing metal object 10 of this embodiment, while being able to manufacture easily from the metal plate 14 without performing welding, the fastening force by the bolt member 13 is the whole of the short side part 15 and the long side part 16. Therefore, it is possible to draw the column 12 to the beam 11 in a more stable state. That is, according to the present embodiment, the attracting metal object 10 can be easily formed without requiring a laborious welding operation by pressing or punching as described above. In addition, a pair of belt-like bulging ribs 18 is provided over substantially the entire length of the short side portion 15 and the long side portion 16 so as to straddle the short side portion 15 and the long side portion 16, and a bolt insertion hole. Since the bolt member 13 inserted through 20a and 20b is fastened to the top surface portion of the belt-like bulging rib 18, the bolt member is interposed via the belt-like bulging rib 18 that continuously bulges into a rib shape in a three-dimensional shape. 13 can be transmitted in a well-balanced manner to the entire short side 15 and the long side 16 without concentrating around the bolt insertion holes 20a and 20b, whereby the short side 15 and the long side It is possible to draw the column 12 toward the beam 11 in a more stable state by efficiently using the entire portion 16.

  Furthermore, according to the present embodiment, the bolt insertion holes 20a and 20b are formed so as to bite into a part of the belt-like bulging ribs 18 on both sides, so that the bolt member 13 is mounted on the top of the belt-like bulging ribs 18. It becomes possible to more easily fasten to the surface portion, and the back side bottom surface 22a of the central portion between the pair of belt-like bulging ribs 18 and the back side bottom surface opposite to the central portion sandwiching the belt-like bulging ribs 18 Since the attracting metal object 10 is pressed so that 18b and 23a are arranged on the same surface P, it is possible to support the fastening force in a more stable state.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, it is not always necessary to flatly chamfer the top surface portion of the belt-like bulging rib in the outer peripheral portion of the bolt insertion hole, and it is not always necessary to form the bolt insertion hole so as to bite into a part of the belt-like bulging rib on both sides. Absent. Furthermore, the attracting metal of the present invention can be used in a portion where other various frame members such as a base, a column, a beam, and a horizontal member are vertically joined without being limited to the joint portion between the column and the beam. In addition, for example, as shown in FIG. 5, in order to draw a pair of frame members 51 arranged linearly on both sides with a single frame member 50 therebetween, the pulling metal object 10 is attached to both of the pair of frame members 51. It can be attached and used. Furthermore, it is not always necessary for the attracting object to be bent into a L shape by bending the short side portion and the long side portion at a right angle. For example, the drawing member is bent so that the inner angle is about 85 degrees, and the bolt member is shortened. When the skeleton member is pulled further after being fastened to the side portion, the short side portion and the long side portion may be at right angles.

It is a principal part perspective view explaining the state which pulled the pillar to the beam using the attracting metal object concerning one desirable embodiment of the present invention. It is a perspective view of the attracting metal object concerning one desirable embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS (a) of the attracting metal object concerning one preferable embodiment of this invention is a side view, (b) is a top view, (c) is a front view. (A) is sectional drawing along AA of FIG.3 (b) of the attracting metal object concerning preferable one Embodiment of this invention, (b) is sectional drawing along BB. It is a principal part perspective view explaining the state where a pair of framework members were pulled near each other using the drawing metal object concerning one desirable embodiment of the present invention.

Explanation of symbols

10 Pulling hardware 11 Beam (framework member)
12 pillars (framework members)
13 Bolt member 14 Metal plate 15 Short side portion 16 Long side portion 17 Bending portion 18 Band-shaped bulging rib 18b Bottom side bottom surface 19 of the band-shaped bulging rib Bulging convex portions 20a, 20b Bolt insertion holes 21a, 21b Chamfered portion 22 Intermediate Flat portion 22a Back side bottom surface 23 of intermediate flat portion Overhang portion 23a Back side bottom surface of overhang portion X Longitudinal direction C Longitudinal center line

Claims (4)

It is used in combination with a bolt member, and is an attracting hardware used to draw the framework member at the joint portion of the framework member of the wooden building,
By pressing a strip-shaped metal plate, the longitudinal cross-sectional shape along the longitudinal direction is formed to be an L shape consisting of a short side portion and a long side portion, and the L shape A pair of strip-shaped bulging ribs that protrude inward and extend in the longitudinal direction on both sides of the longitudinal center line, so as to straddle the short side and the long side across the bent part The cross-sectional shape of the portion where the belt-like bulging rib is formed is a shape having two bulging convex portions,
The short side portion and the long side portion are respectively formed with bolt insertion holes at portions between the pair of belt-like bulging ribs, and the bolt member is formed on the top surface portion of the belt-like bulging rib. Drawer to be fastened.   The attracting metal object according to claim 1, wherein a top surface portion of the belt-like bulging rib located at an outer peripheral portion of the bolt insertion hole is chamfered flat.   The pulling metal object according to claim 1 or 2, wherein the bolt insertion hole is formed so as to bite into a part of the belt-like bulging ribs on both sides.   The back side bottom surface of the central part between the pair of belt-like bulging ribs and the back side bottom surface opposite to the central part across the belt-like bulging ribs are formed on the same surface. The attracting metal object according to any one of claims 1 to 3.

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