JP2018025087A - Hardware for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical joint metal easy-to-manufacture which is applied for joining a first member and a second member in a wooden structure capable of enhancing the construction efficiency by configuring to be easily inserted into a concave hole.SOLUTION: A cylindrical body 31 includes: plural first pin holes 15, 15 formed at one side 3a (first member side); and plural second pin holes 18, 19, 20 formed at the other side 4a (second member side). The cylindrical body 31 is formed in a pipe shape by bending a flat plate, and on one end 3 of the cylindrical body 31, a dome-like front end part 35 is formed. The dome-like front end part 35 is formed of a front end protruding plate 10, 10A (disposed without gap) at the one side 3 of the cylindrical body 1 by bending into a hemispherical outer shape.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a building hardware used when connecting structural members of a wooden building.

In a wooden structure, when joining the end surface (wooden end) of the second member to the side surface of the first member, concave portions (mortises) having a circular cross section are formed on the side surface of the first member and the end surface of the second member, respectively. The pipe-shaped hardware common to the recess was inserted. In this hardware, one side in the length direction of the pipe-shaped hardware is embedded in the recess on the first member side and fixed with a pin, and the other side in the length direction of the pipe-shaped hardware is embedded in the recess on the second member side. It was fixed at.
At this time, when inserting the pipe-shaped hardware into the recess, the tip of the pipe-shaped hardware is reduced in diameter so that the tip of the pipe-shaped hardware does not hit the hole wall of the recess. (Patent Documents 1 to 3).

Japanese Patent Laid-Open No. 11-190072 JP-A-11-350597 JP 2001-323558 A

In Patent Documents 1 and 2, a pipe-shaped structure is formed from a piece of hardware that is divided into two vertically, so that when an external force is applied to the piece of hardware when it is attached to a recess (mortise), the piece of hardware is separated. In order to avoid this, it was necessary to devise, and it was troublesome to form each metal piece into a shape with a reduced diameter at the tip.
Moreover, in patent document 3, although the process was easy and the 1st member and the 2nd member could be joined reliably, when a metal object entered into a recessed part (mortise) diagonally, the side surface of a protrusion piece is a recessed part. Sometimes it hits the side wall.

  In the present invention, the construction hardware is formed by forming a dome-shaped tip on at least one side of the cylindrical main body and dividing the dome-shaped tip, thus solving the above-mentioned problems.

That is, according to the present invention, a first recessed portion is formed on the first joint surface of the first member of the wooden building, and a second recessed portion is formed on the second joint surface of the second member. 2 is a hardware that is used when the first wood and the second wood are joined by bringing the joint surface into close contact with each other and inserting a hardware into the first recessed portion and the second recessed portion. This is a metal fitting for wooden construction, characterized in that it is configured as follows.
(1) In the cylindrical main body, a pair of first pin holes orthogonal to the axial center of the cylindrical main body is formed on the first member side, and one orthogonal to the axial core is formed on the second member side. A pair of second pin holes is formed.
(2) In the cylindrical main body, a dome-shaped tip is formed at one opening end in the axial direction,
(3) The dome-shaped distal end portion is formed by radially dividing into a plurality from the axial center of the cylindrical main body.

In another invention of the metal fitting, the first concave portion is formed on the first joint surface of the first member of the wooden structure, the second concave portion is formed on the second joint surface of the second member, and the first Used when joining the first wood and the second wood by bringing the two joint surfaces and the second joint surface into close contact with each other and inserting a hardware into the first recessed portion and the second recessed portion. It is a metal fitting to be used for wooden construction, characterized in that it is configured as follows.
(1) In the cylindrical main body, a pair of first pin holes orthogonal to the axial center of the cylindrical main body is formed on the first member side, and one orthogonal to the axial core is formed on the second member side. A pair of second pin holes is formed.
(2) The cylindrical main body is formed in a pipe shape by bending a flat plate.
(3) In the cylindrical main body, a dome-shaped tip is formed at one opening end in the axial direction,
(4) The dome-shaped tip portion is formed by radially dividing into a plurality from the axial center of the cylindrical main body.

Moreover, in the invention of each of the above-mentioned joint hardware, it is a joint hardware for a wooden building configured as follows.
(1) The dome-shaped tip portion was formed with a small opening near the axis of the cylindrical main body, and the peripheral portion of the small opening was bent inward.

Moreover, in the invention of each of the above-mentioned joint hardware, it is a joint hardware for a wooden building configured as follows.
(1) The dome-shaped tip portion is formed from a plurality of tip protrusion pieces, which are radially divided from the axial center of the cylindrical main body.
(2) A taper edge is formed on the inner surface side of one of the corresponding edge protrusions at the adjacent edge protrusions.
(3) In the axial direction of the cylindrical main body, the other opening end facing the one opening end is bent toward the axis.

Moreover, in the invention of each of the above-mentioned joint hardware, it is a joint hardware for a wooden building configured as follows.
(1) The pin holes on one side where the dome-shaped tip portion was formed were made into two sets of pin holes, and each set of pin holes was formed orthogonally to each other at the same position in the axial direction of the cylindrical body.
(2) The other side pin holes were formed into at least two sets of pin holes, and each set of pin holes was formed orthogonal to each other at different positions in the axial direction of the cylindrical body.
(3) The pin holes of any one set on the other side are formed in parallel with the pin holes of any set of the pin holes on the one side.

  “With no gaps” in “a large number of isosceles triangular tip protrusions projecting without gaps at positions corresponding to the bases” in the above means a slight gap in the work process. That is, in general, the material swells in the vicinity of both ends (vertices) of the bases of the adjacent isosceles triangles when bent, but a slight gap is formed so as to eliminate such material swell. Therefore, for example, a gap as long as the base is not formed near the base of adjacent isosceles triangles.

The building hardware of the present invention has a dome-shaped tip portion formed on at least one side of the cylindrical main body, and the dome-shaped tip portion is formed by dividing into a plurality of pieces radially from the axis of the cylindrical main body. The dome-shaped tip portion can be formed, and when inserted into the recessed portion of the wood, the assembly work can be made more efficient without the tip of the construction hardware hitting the side wall of the recessed portion.
Further, when the cylindrical main body is formed by rounding and bending the flat plate main body, the dome-shaped tip is divided, so that it can resist the external force that tries to open the contact side of the cylindrical main body. .

In the construction hardware of the present invention, (a) is a plan view, (b) is a front view, (c) is a bottom view, and (d) is a rear view. Similarly, it is the construction hardware of this invention, (a) represents a left side view, (b) represents a right side view. In the middle of the production of the present invention, (a) is a front view of the production flat plate before processing, and (b) is a front view of the production flat plate bent into a pipe shape. It is a figure explaining joining of the member using the hardware for construction of this invention, (a) expresses before joining and (b) expresses after joining. (A) is a perspective view of the metal object of the embodiment of this invention, (b) represents the perspective view of another embodiment. Similarly, in another embodiment, (a) is a left side view, (b) is a front view, (c) is a right side view, (d) is a rear view, and (e) is a plan view. (A) (b) represents a bottom view of another embodiment of the present invention. In another embodiment of the present invention, (a) is another side view, (b) is another front view, (c) is another front view, (d) is another side view, and (e) is another. (F) represents another side view. In another embodiment of the present invention, (a) is a front view of a production flat plate before processing, and (b) is an enlarged end view taken along line AA of (a). (A)-(e) is a figure explaining the manufacturing procedure using the flat plate for manufacture of FIG. 9, (a)-(b) is accompanied by the end elevation of a direction perpendicular | vertical to an axis | shaft.

  Based on the drawings, the architectural hardware 40 of the present invention and the method of manufacturing the hardware are described in A. A first embodiment, B. Each of the second embodiments will be described.

A. First embodiment

    1. Manufacturing plate 30

(1) The manufacturing flat plate 30 includes a rectangular flat plate main body 1 constituting the cylindrical main body 31 and isosceles triangular tip protrusions 10 and 10A that are connected to one end piece 3 of the flat plate main body 1. When the long side of the rectangular flat plate body 1 forms the contact sides 2 and 2 and is bent and rounded, they are arranged to face each other. Further, the short side of the flat plate body 1 constitutes one end side 3 and the other end side 4. A line that is parallel to both side edges 3 and 4 of the flat plate main body 1 (perpendicular to the contact piece 2) and that divides the contact side 2 and 2 directions in approximately half is defined as a substantially central line 5. With one side 3a on one side 3a and the other side 4a on the other side 4 with the approximate center line 5 in between (FIG. 3 (a)). When the building hardware 40 is applied to the joining of the lower surface 52 of the horizontal member 50 and the upper surface 62 of the column 60, the substantially central line 5 substantially coincides with the position where the joining surfaces 52, 62 are in contact (FIG. 4 ( a) (b)).
One end side 3 of the flat plate main body 1 is provided with three tip protrusions 10, 10, 10 having an isosceles triangle shape, and half tip protrusions 10 </ b> A, 10 </ b> A divided in half on both sides of the three tip protrusions 10, 10, 10. Each will be connected. In the tip protrusion 10, the base of the isosceles triangle is connected to the one end 3 of the flat plate body 1, and the other two sides 11, 11 having the same length bulge outward (convex outward). It is formed (FIG. 3A).
Further, the tip half projecting piece 10A is substantially half the length of the tip projecting piece 10 in the vertical direction, so that the length of the bottom side is about one-half of the tip projecting piece 10. The tip half projecting piece 10A is formed such that the side 11A corresponding to the hypotenuse and the side 11Aa corresponding to the vertical side bulge outward (convex outward).
Further, the ends of the tip half projecting pieces 10A and 10A each reach the contact side 2 (FIG. 3A), and the side 11Aa of the tip half projecting piece 10A is formed slightly obliquely. It continuously and smoothly bends in the direction in which the contact sides 2 and 2 approach (the interval between the contact sides 2 and 2 narrows) and reaches the side 11Aa (FIG. 3A).
Further, the tip protruding piece 10 and the tip half protruding piece 10A are continuously arranged at one end side 3 (at the base of the isosceles triangle of the tip protruding piece 10) without a gap. Here, with no gap, the one end side 3 is bent so as to be circular, and the tip protrusions 10 and 10 are bent toward the inside (the depth side in FIG. 3A). The material swells inside the vicinity of both ends of the base of the adjacent isosceles triangle during processing, but a slight gap is formed so as to eliminate such material swell (FIG. 3A). ).

(2) A pair of pin holes 15 and 15 and a pair of pin holes 16 and 16 are formed on one side 3a of the flat plate body 1 near one end side 3 in parallel with the one end side 3. One of the pin holes 16 becomes pin hole pieces 16A and 16A that open to the contact pieces 2 and 2, and the pin hole pieces 16A and 16A constitute one pin hole 16 (FIG. 3A).
Further, on the other side 4 a of the flat plate body 1, two pairs of pin holes 18, 18 are formed in the vicinity of the other end side 4 in parallel with the other end side 4. In addition, a pair of pin holes 19 and 19 are formed on the substantially center line 5 side from the pin holes 18 and 18. In addition, a pair of pin holes 20 and 20 are formed on the substantially center line 5 side from the pin holes 19 and 19. One of the pin holes 19 becomes pin hole pieces 19A, 19A that open to the contact piece 11, and the pin hole 19 is constituted by the pin hole pieces 19A, 19A (FIG. 3A).

(3) The manufacturing flat plate 30 is formed with the above-described configuration (FIG. 3A). The production flat plate 30 is usually formed by pressing from any metal flat plate with a press.

    2. Manufacture of building hardware 40

(1) The manufacturing flat plate 30 is bent gradually or at a time to bring the abutment side 2 and the abutment side 2 into close contact with each other to form the flat plate body 1 in a cylindrical shape (pipe shape). (FIG. 3B). It is preferable that the contact side 2 and the contact side 2 are in close contact with each other. However, a clearance is provided between the contact side 2 and the contact side 2 so as to form a slit. You can also. A straight line passing through the center of the cylindrical main body 31 in the length direction is defined as an axis 32 (FIGS. 1A and 1C).

(2) In this state, on one side 3a, the axis connecting the pin holes 15, 15 and the axis connecting the pin holes 16, 16 are each orthogonal to the axis 32, and both axes are also orthogonal to each other. Further, on the other side 4a, the axis connecting the pin holes 18, 18, the axis connecting the pin hole 19, the axis connecting the pin holes 20, 20, and the axis connecting the pin holes 20, 20 are orthogonal to the shaft core 32, and the pin holes 18, 18 are connected. The axis connecting and the axis connecting the pin holes 20 and 20 are orthogonal to the axis connecting the pin holes 19 and 19, respectively, and the axis connecting the pin holes 18 and 18 and the axis connecting the pin holes 20 and 20 are parallel to each other. Formed (FIGS. 1 and 2).

(3) Subsequently, a manufacturing-type recess having an inner wall recess that matches the outer shape of the dome-shaped tip 35 to be formed on the tip projections 10 and 10 and the tip half projections 10A and 10A on the one end side 3 side ( (Not shown) is gradually pressed to bend the tip protrusions 10 and 10A on the side of one end 3 to form a dome-like tip 35. In this case, the dome-shaped tip 35 is formed to bulge outward (convex outward) due to the shape of the recess, but it can also be formed in a conical shape (not shown). At this time, the adjacent sides 11 and 11 of the tip protruding pieces 10 and 10 and the tip half protruding pieces 10A and 10A are in contact with each other.
At this time, the tip portions 13 of some of the tip projection pieces 10 and the tip portions 13 of the tip half projection pieces 10A are rounded (since they are rounded and not pointed) (FIG. 3A). ), A central through hole 36 is formed in the vicinity of the axial core 32 of the cylindrical main body 31, and a peripheral portion of the central through hole 36 is recessed inwardly (on the cylindrical main body 31 side, on the substantially central line 5 side). Form. In addition, the front-end | tip part 13 can also be rounded by all the front-end | tip protrusions 10 and the front-end half protrusion pieces 10A (not shown).

(4) Next, or simultaneously with (3) or before (3), the other end 4 of the formed cylindrical body 31 is pressed against a recess (not shown) of another manufacturing mold. Or by shaving with a file or the like to remove the outer peripheral edge of the other end 4 or to bend the other end 4 toward the axis 32.

(5) The building hardware 40 is configured as described above (FIGS. 1, 2, and 5 (a)).

    3. Use of architectural hardware 40

(1) In a wooden structure, a wooden first member is used as a horizontal member 50 such as a beam, and a first recessed portion 53 is formed on a lower surface 52 (first joint surface) of the horizontal member 50. A pin insertion hole 54 is formed from the side surfaces 51, 51 of the horizontal member so as to communicate with the first recessed portion 53. Similarly, a pin insertion hole 55 is formed on the lower surface 52 side of the pin insertion hole 54 (FIG. 4A).
A second wooden member is used as a pillar 60, and a second recessed portion 63 is formed on an upper surface 62 (second joint surface) that is a mouth of the pillar 60. Further, a pin insertion hole 64 communicating with the second recessed portion 63 is formed from the side surface 61 of the column 60 (FIG. 4A).

(2) The other side 4a of the building hardware 40 is inserted into the first recess 53 of the horizontal member 50, and the pins 70 and 70 are inserted from the pin insertion holes 54 and 55, so that the pin hole of the building hardware 40 is inserted. The building hardware 40 is fixed to the horizontal member 50 through the pin holes 18 and 18 and the pin holes 20 and 20. One side 3a (dome-shaped tip portion 35 side) of the construction hardware 40 protrudes downward from the lower surface 52 of the horizontal member 50 (FIG. 4A).

(3) Subsequently, the lower surface 53 of the horizontal member 50 is brought into close contact with the upper surface 63 of the column 50 while the one side 3 a of the building hardware 40 is inserted into the second recessed portion 63 of the column 60.
Subsequently, the pin 71 is inserted from the pin insertion hole 63 of the column 60, passes through the pin holes 16 and 16 of the building hardware 40, and the building hardware 40 is fixed to the column 60. Thereby, the horizontal member 50 and the pillar 60 are joined via the construction hardware 40 (FIG. 4B).

(4) In this case, since two sets of pin holes 15 and 15 and pin holes 16 and 16 are provided in the construction hardware 40, the pin holes 15 and 16 on either side are easy to drive the pin 71. Correspondingly, a pin insertion hole 64 can be formed on any of the other side surfaces 61, 61 of the column 60 (not shown).

(5) In the above description, the joining of the lower surface (joint surface) 52 of the horizontal member 50 and the upper surface (joint surface) 62 of the column 60 has been described. However, the building hardware 40 is applied to other joint surfaces. (Not shown).

    4). Other embodiments

(1) In the above embodiment, two sets of pin holes 15 and 16 are formed on one side 3a of the building hardware 40, and three sets of pin holes 18, 19, and 20 are formed on the other side 4a. Only one set of pin holes 15 and 15 can be formed on the other side 4a, and only one set of pin holes 16 and 16 can be formed on the other side 4a (FIG. 6, FIG. 5B). Pin holes 18 and 20 can also be formed (not shown). That is, if there is at least one set of pin holes on both sides 3a and 4a, the further pin holes are optional depending on the length of the construction hardware 40 and the like.

(2) Moreover, in the said embodiment, although the front-end | tip protrusion 10 which forms the dome-shaped front-end | tip part 35 was comprised from the two front-end | tip protrusions 10 and the two front-end half protrusions 10A on the contact side, The number of the projecting pieces 10 is arbitrary. For example, the dome-shaped tip 35 can be formed from four tip protrusions 10 and 10 (FIG. 7A), or the dome-shaped tip 35 can be formed from six tip protrusions (FIG. 7 ( b)).

(3) Moreover, in the said embodiment, although the flat plate main body 1 which provided the front-end | tip protrusion 10 was rounded and bent and the metal fitting 40 was comprised, the front-end | tip protrusions 10 and 10 were formed in the end of pipe material. The construction hardware 40 can also be configured (not shown).

(4) Moreover, in the said embodiment, although the dome-shaped front-end | tip part 35 (front end protrusion piece 10 or front end half protrusion piece 10A) was formed in the one end side 3 (one end edge 3 of the flat plate main body 1) of the cylindrical main body 31. FIG. Also, the dome-shaped tip portion 35 (the tip protrusion piece 10 or the tip half protrusion piece 10A) having the same structure can be formed on the other end side 4 of the cylindrical body 31 (the other end side 4 of the flat plate body 1). (Not shown).

(5) In the manufacturing flat plate 30, the pin holes 19 </ b> A and 19 </ b> A and the pin holes 16 </ b> A and 16 </ b> A are divided by the contact sides 2 and 2, and the manufacturing flat plate 30 is rounded to form the cylindrical main body 31. The pin holes 19 and 16 are arranged so as to form the pin holes 16, respectively, but the pin holes 18, 19, 20, 15 and 16 may be arranged so as not to be divided into the contact sides 2 and 2 (FIG. 8A). ). In this case, there is no pin hole penetrating the contact sides 2 and 2 (slits) in the cylindrical main body 31.

(6) Moreover, in the said embodiment, although the contact sides 2 and 2 of the flat plate main body 1 of the flat plate 30 for manufacture were formed in linear form, the convex part 2a is formed in one side, and the recessed part 2b is formed in the other, and it is cylindrical. When forming the main body 31, it can also be set as the structure which the convex part 2a and the recessed part 2b fit into the other. For example, a rectangular convex portion 2a is formed on one side and a rectangular concave portion 2b on the other side between the pin holes 15 and 16 and one end side 3 (tip projection 10) (FIG. 8B). In this case, the convex portion 2 a and the concave portion 2 b are located between the dome-shaped tip portion 35 (tip projection 10) and the pin holes 15 and 16 in the cylindrical main body 31.

(7) Moreover, in the said embodiment, although the contact sides 2 and 2 of the flat plate main body 1 of the flat plate 30 for manufacture were formed in linear form, it can also be bent greatly (FIG.8 (c)-( e)).
For example, the contact sides 2 and 2 are formed in a large wave shape (one cycle) so as to be fitted to each other (FIG. 8C) In this case, each pin hole 18, 19, 20, 15, 16 Although the contact sides 2 and 2 do not penetrate (FIG. 8C), they can also penetrate (not shown).
For example, it is also possible to form three steps in a step shape by fitting the large protruding portions 2a and the recessed portions 2b to the contact sides 2 and 2 of the flat plate main body 1 of the manufacturing flat plate 30 ( FIG. 8D). In this case, in the state in which the cylindrical main body 31 is formed, the fitted contact sides 2 and 2 penetrate the pin holes 18A and 18A and the pin holes 20A and 20A (FIG. 8D). It can also be arranged at a position where it is not allowed (not shown).
Further, for example, the contact sides 2 and 2 of the flat plate main body 1 of the manufacturing flat plate 30 can be fitted in a zigzag shape in which large triangular irregularities are formed (FIG. 8E). In this case, in the state where the cylindrical main body 31 is formed, the fitted contact sides 2 and 2 do not penetrate the pin holes 18A and 18A and the pin holes 20A and 20A (FIG. 8E), but do so. It can also be placed in a position (not shown).

(8) Moreover, in the said embodiment, although the contact edge 2 and 2 orthogonal to the one end side 3 and the other end side 4 were formed in linear form, the flat plate main body 1 of the flat plate 30 for manufacture was formed in the rectangle, The side 3, the other end 4, and the contact sides 2, 2 can be formed at an angle without being orthogonal to each other, and the flat plate body 1 of the manufacturing flat plate 30 can be formed into a parallelogram. In this case, with the cylindrical main body 31 formed, the contact sides 2 and 2 (slits) are oblique with respect to the length direction of the cylindrical main body 31 (with respect to the one end side 3 and the other end side 4). It arrange | positions (FIG.8 (f)). In this case, the contact sides 2 and 2 (slits) penetrate the pin holes 20A and 20A (FIG. 8 (f)), but they can also penetrate other pin holes or not penetrate the pin holes ( None of them are shown).

B. Second embodiment

  This embodiment is a manufacturing method using another manufacturing flat plate 30. The basic structure of the manufacturing flat plate 30 is the same as that of the above embodiment, and the structure of the tip protrusion 10 is different from that of the above embodiment. Further, in the manufacturing flat plate 30, the side located outside when rolled into a cylindrical shape is referred to as an outer surface 7, and the side located inside is referred to as an inner surface 7 a. Further, the configuration of the formed architectural hardware 40 and the use of the formed architectural hardware 40 are the same as those in the first embodiment.

    1. Manufacturing plate 30

(1) Similar to the first embodiment, when the long sides of the rectangular flat plate main body 1 constituting the cylindrical main body 31 are bent and rounded, the contact sides 2 and 2 arranged to face each other. The short side constitutes one end side 3 and the other end side 4. A line that is parallel to both side edges 3 and 4 of the flat plate main body 1 (perpendicular to the contact piece 2) and that divides the contact side 2 and 2 directions in approximately half is defined as a substantially central line 5. With one side 3a on one side 3a and the other side 4a on the other side 4 with the approximate center line 5 in between (FIGS. 9A and 3A). When the construction hardware 40 is applied to the joining of the lower surface 52 of the horizontal member 50 and the upper surface 62 of the column 60, the substantially center line 5 substantially coincides with the position where the joining surfaces 52, 62 are in contact (FIG. 9 ( a) and FIG. 3 (a)).
One end side 3 of the flat plate body 1 is provided with tip half halves 10A, 10A, which are halved on both sides of three tip protrusions 10a, 10b, 10a and three tip protrusions 10a, 10b, 10a having an isosceles triangle shape. Each will be connected. The tip protrusions 10a, 10b, and 10a have bases of isosceles triangles connected to one end side 3 of the flat plate body 1, and the other two sides 11 and 11 having the same length bulge outward (outside). Are convex) (FIGS. 9A and 9B).
Further, similarly to the first embodiment, the tip half projecting piece 10A is substantially half of the tip projecting piece 10 in the vertical direction, so that the length of the bottom side is about one half of the tip projecting piece 10. It has become. The tip half projecting piece 10A is formed such that the side 11A corresponding to the hypotenuse and the side 11Aa corresponding to the vertical side bulge outward (convex outward). Further, the ends of the tip half projecting pieces 10A and 10A reach the contact side 2 (FIGS. 9A, 9B, and 3A), and the side 11Aa of the tip half projecting piece 10A is slightly inclined. Is bent continuously in a direction in which the contact sides 2 and 2 approach (the interval between the contact sides 2 and 2 is narrowed) and reaches the side 11Aa (see FIG. 9A). (B), FIG. 3 (a)).

(2) Here, of the tip protrusions 10a, 10b, and 10a, the tip protrusions 10a and 10a (corresponding to pin holes 15, 18, and 20 described later) adjacent to the tip half-projection piece 10A In the tip projection piece 10b (corresponding to the pin holes 16 and 19) and the tip half projection piece 10A which are other tip projection pieces 10 other than the tip projection piece 10a, the tip of the isosceles triangle) 13a is slightly sharpened. The tip portion (the apex of an isosceles triangle) 13A is formed to be rounded in a nearly flat shape (FIGS. 9A and 9B).
Further, in the tip protruding piece 10a, a tapered edge 21 is formed on the inner surface 7a side of the flat plate 30 at the sides 11 and 11 so that the material thickness is reduced along the side 11 (FIGS. 9B and 9C). ). Therefore, the “tip protruding side 10a” having the tapered edge 21 and the “tip protruding piece 10b and the tip half protruding piece 10A” that do not form the tapered edge 21 are alternately formed. Except for the difference in the presence or absence of the tapered edge 21, the tip protruding piece 10a and the tip protruding piece 11b have substantially the same shape.
Further, the tip protruding pieces 10a, 10b, 10a and the tip half protruding piece 10A are continuously arranged at one end side 3 (at the corner of the base of the isosceles triangle) without a gap. Here, “no gap” is the same as in the above embodiment. That is, bending is performed so that one end side 3 is circular, and each of the tip protrusions 10 and 10 is bent toward the inside (the depth side in FIGS. 9A and 3A). The material swells inside the vicinity of both ends of the base of the adjacent isosceles triangle during processing, but a slight gap is formed so as to eliminate such material swell (FIG. 9A). (B), FIG. 3 (a)).

(3) The pin holes 15, 16, 18, 19 are formed in the same manner as in the first embodiment. That is, a pair of pin holes 15 and 15 and a pair of pin holes 16 and 16 are formed on one side 3a of the flat plate body 1 near one end side 3 and in parallel with the one end side 3. One of the pin holes 16 becomes pin hole pieces 16A and 16A that open to the contact pieces 2 and 2, and one pin hole 16 is formed from the pin hole pieces 16A and 16A (FIGS. 9A and 3A). a)).
Further, on the other side 4 a of the flat plate body 1, two pairs of pin holes 18, 18 are formed in the vicinity of the other end side 4 in parallel with the other end side 4. In addition, a pair of pin holes 19 and 19 are formed on the substantially center line 5 side from the pin holes 18 and 18. In addition, a pair of pin holes 20 and 20 are formed on the substantially center line 5 side from the pin holes 19 and 19. One of the pin holes 19 becomes pin hole pieces 19A and 19A that open to the contact piece 11, and the pin hole pieces 19A and 19A constitute the pin hole 19 (FIGS. 9A and 3A). .

(4) The manufacturing flat plate 30 is formed with the above-described configuration (FIG. 9A). The production flat plate 30 is usually formed by pressing from any metal flat plate with a press.

    2. Manufacture of building hardware 40

(1) In the flat plate body 1 of the manufacturing flat plate 30, bent along the contact sides 2 and 2 around the both contact sides 2 and 2 with a curvature larger than the curvature of the cylindrical body 31 to be formed. (FIG. 10A).
Subsequently, in the flat plate body 1 of the manufacturing flat plate 30, the periphery of the axial center line 6 is bent with a curvature larger than the curvature of the cylindrical main body 31 to be formed (FIG. 10B).
Subsequently, in the flat plate body 1 of the manufacturing flat plate 30, the periphery of the axial center line 6 bent with a large curvature is bent with substantially the same curvature as the curvature of the cylindrical main body 31 to be formed (FIG. 10C). ).
Subsequently, the flat plate body 1 of the manufacturing flat plate 30 is bent with the same curvature as the curvature of the cylindrical main body 31 to be formed as a whole, and the contact side 2 and the contact side 2 are brought into close contact with each other. 1 is formed into a cylindrical shape (pipe shape) to form a cylindrical main body 31 (FIG. 10D). In addition, the contact side 2 and the contact side 2 can be arranged with a slight gap in the state where they are in a light contact state or in a state where slits are formed, as in the above-described embodiment (not shown). Not)

(2) In this state, as in the first embodiment, the axis connecting the pin holes 15 and 15 and the axis connecting the pin holes 16 and 16 are orthogonal to the axis 32 on one side 3a. Both axes are also orthogonal to each other. Further, on the other side 4a, the axis connecting the pin holes 18, 18, the axis connecting the pin hole 19, the axis connecting the pin holes 20, 20, and the axis connecting the pin holes 20, 20 are orthogonal to the shaft core 32, and the pin holes 18, 18 are connected. The axis connecting and the axis connecting the pin holes 20 and 20 are orthogonal to the axis connecting the pin holes 19 and 19, respectively, and the axis connecting the pin holes 18 and 18 and the axis connecting the pin holes 20 and 20 are parallel to each other. Formed (see FIGS. 1 and 2).

(3) Subsequently, as in the first embodiment, the inner wall of the tip projections 10a, 10b and the tip half projection 10A on the one end side 3 side is matched to the outer shape of the dome-shaped tip 35 to be formed. A “manufacturing-type recess” (not shown) having a recess is pressed gradually or all at once to bend the tip protrusions 10 and 10A on the one end side 3 side to form a dome-shaped tip 35. . In this case, the dome-shaped tip 35 is formed to bulge outward (convex outward) due to the shape of the recess, but it can also be formed in a conical shape (not shown). At this time, the adjacent sides 11, 11A, 11Aa of the tip protrusions 10a, 10b and the tip half protrusions 10A, 10A are in contact with each other. In this case, since the tapered edge 21 is formed on the side 11 of the tip projection piece 10a, the sides facing the tip projection pieces 10a, 10b, and 10A form a gap between the outer surface 7 and the inner surface 7a (in the thickness direction of the flat plate 30). It can be brought into close contact or abutted with very little. In addition, a convex portion (not shown) for molding the central through hole 36 and the central concave portion 37 is also formed in the “manufacturing concave portion”, so that the entire dome-shaped tip portion 35 can be formed. Yes.
At this time, similarly to the first embodiment, the tip protrusions 10b and the tip halves 10b of the tip halves 10A are rounded by pressing against the "manufacturing mold recess". Therefore (since it is rounded and not sharp), a central through hole 36 is formed in the vicinity of the axial core 32 of the cylindrical main body 31, and the peripheral portion of the central through hole 36 is inward (toward the cylindrical main body 31 side). A central recess 37 that is recessed (to the center line 5 side) is formed (FIG. 9E). Similarly to the above-described embodiment, all of the tip protrusion pieces 10 and the tip half protrusion pieces 10A including the tip portion 13a can be rounded (not shown).

(4) In the same manner as in the first embodiment, subsequently, simultaneously with (3), or before (3), the other end side 4 of the formed cylindrical body 31 is replaced with another manufacturing type. Press against a recess (not shown) or scrape with a file or the like to remove the outer edge of the other end 4 or bend the other end 4 toward the axis 32.

(5) The building hardware 40 is configured as described above (FIGS. 1, 2, and 9E). Normally, the processing from FIGS. 10 (a) to 10 (d) is performed, and the hardware (FIG. 10 (d)) in the middle of manufacture is once taken out from the processing machine, and the tip protrusion is removed by a separate processing machine. 10a and 10b, the tip half projecting piece 10A, and the other end side 4 are processed.

1 Flat body 2 Contact side (flat body)
3 One end side (flat plate body, one open end)
3a One side 4 The other end side (flat plate body, other opening end)
4a Other side 6 Axial center line 7 Flat plate outer surface 7a Flat plate inner surface 10, 10a, 10b Tip projection piece 10A Tip half projection piece 11, 11A, 11Aa Side (tip projection piece, tip half projection piece)
13, 13a, 13A Tip (tip projection, tip half projection)
15, 16 Pin hole (one side)
18, 19, 20 Pin hole (other side)
21 Tapered edge 30 of the tip protrusion 31 Manufacturing flat plate 31 Tubular body 32 Axle core 35 Dome-shaped tip 36 Central through hole (dome-shaped tip)
37 Center recess (dome-shaped tip)
40 Construction hardware 50 Horizontal material (first member)
51 Side surface of horizontal member 52 Lower surface of horizontal member (first joint surface)
53 1st recessed part 54,55 of a horizontal member 60 Pin insertion hole 60 of a horizontal member Column (2nd member)
61 Column side surface 62 Column upper surface (Kiguchi, second joint surface)
63 2nd recessed part 64 of a pillar 64 Pin insertion holes 70 and 71 of a pillar

Claims (5)

A first recessed portion is formed on the first joint surface of the first member of the wooden structure, a second recessed portion is formed on the second joint surface of the second member, and the second joint surface and the second joint surface are formed. It is a hardware used for bonding the first wood and the second wood by inserting them into the first recessed portion and the second recessed portion and bonding the first wood and the second wood, as follows: A metal fitting for wooden construction, characterized by comprising.
(1) In the cylindrical main body, a pair of first pin holes orthogonal to the axial center of the cylindrical main body is formed on the first member side, and one orthogonal to the axial core is formed on the second member side. A pair of second pin holes is formed.
(2) In the cylindrical main body, a dome-shaped tip is formed at one opening end in the axial direction,
(3) The dome-shaped distal end portion is formed by radially dividing into a plurality from the axial center of the cylindrical main body. A first recessed portion is formed on the first joint surface of the first member of the wooden structure, a second recessed portion is formed on the second joint surface of the second member, and the second joint surface and the second joint surface are formed. It is a hardware used for bonding the first wood and the second wood by inserting them into the first recessed portion and the second recessed portion and bonding the first wood and the second wood, as follows: A metal fitting for wooden construction, characterized by comprising.
(1) In the cylindrical main body, a pair of first pin holes orthogonal to the axial center of the cylindrical main body is formed on the first member side, and one orthogonal to the axial core is formed on the second member side. A pair of second pin holes is formed.
(2) The cylindrical main body is formed in a pipe shape by bending a flat plate.
(3) In the cylindrical main body, a dome-shaped tip is formed at one opening end in the axial direction,
(4) The dome-shaped tip portion is formed by radially dividing into a plurality from the axial center of the cylindrical main body. The metal joint for wooden construction according to claim 1 or 2, which is configured as follows.
(1) The dome-shaped tip portion was formed with a small opening near the axis of the cylindrical main body, and the peripheral portion of the small opening was bent inward. The metal joint for wooden construction according to claim 1 or 2, which is configured as follows.
(1) The dome-shaped tip portion is formed from a plurality of tip protrusion pieces, which are radially divided from the axial center of the cylindrical main body.
(2) A taper edge is formed on the inner surface side of one of the corresponding edge protrusions at the adjacent edge protrusions.
(3) In the axial direction of the cylindrical main body, the other opening end facing the one opening end is bent toward the axis. The metal joint for wooden construction according to claim 1 or 2, which is configured as follows.
(1) The pin holes on one side where the dome-shaped tip portion was formed were made into two sets of pin holes, and each set of pin holes was formed orthogonally to each other at the same position in the axial direction of the cylindrical body.
(2) The other side pin holes were formed into at least two sets of pin holes, and each set of pin holes was formed orthogonal to each other at different positions in the axial direction of the cylindrical body.
(3) The pin holes of any one set on the other side are formed in parallel with the pin holes of any set of the pin holes on the one side.

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