JP6846959B2 - Manufacturing method of building hardware - Google Patents

Description

The present invention relates to a method of manufacturing to that architectural for hardware used to couple the structural member of the wooden structure.

In a wooden structure, when the end face (wood mouth) of the second member is joined to the side surface of the first member, a recess (mortise) having a circular cross section is formed on the side surface of the first member and the end face of the second member, respectively. , A pipe-shaped hardware common to the recess was inserted. In this hardware, one side of the pipe-shaped hardware in the length direction is embedded in the recess on the first member side and fixed with a pin, and the other side of the pipe-shaped hardware in the length direction is embedded in the recess on the second member side and pinned. It was fixed at.
At this time, when inserting the pipe-shaped metal fitting into the recess, the tip of the pipe-shaped metal fitting is reduced in diameter to form a small diameter so that the tip of the pipe-shaped metal fitting does not hit the hole wall of the recess. (Patent Documents 1 to 3).

Japanese Unexamined Patent Publication No. 11-190072 Japanese Unexamined Patent Publication No. 11-350597 Japanese Unexamined Patent Publication No. 2001-323558

In Patent Documents 1 and 2, since the pipe-like structure is formed from the metal pieces divided into two vertically, the metal pieces are separated when an external force acts on the metal when attached to the recess (mortise). It was necessary to devise a way to prevent this from happening, and it was troublesome to process each piece of hardware into a shape with a reduced diameter at the tip.
Further, in Patent Document 3, the processing is easy and the first member and the second member can be surely joined. However, when the metal fitting enters the recess (mortise) diagonally, the side surface of the projecting piece is recessed. In some cases, it hit the side wall.

The present invention solves the above-mentioned problems because the building hardware has a dome-shaped tip formed on at least one side of the tubular body and is configured by dividing the dome-shaped tip.

That is, in the present invention, the first recessed portion is formed on the first joint surface of the first member of the wooden structure, the second recessed portion is formed on the second joint surface of the second member, and the second joint surface and the second recessed portion are formed. 2 A metal fitting used for joining the first wood and the second wood by bringing the joint surfaces into close contact with each other and inserting a metal fitting into the first recessed portion and the second recessed portion. , It is a metal joint for wooden construction characterized by being configured as follows.
(1) In the tubular body, a set of first pin holes orthogonal to the shaft core of the tubular body is formed on the first member side, and a pair of first pin holes orthogonal to the shaft core is formed on the second member side. A set of second pin holes is formed.
(2) In the tubular body, a dome-shaped tip is formed at one opening end in the axial direction.
(3) The dome-shaped tip portion was formed by being divided into a plurality of parts radially from the shaft core of the tubular main body.

Further, in the invention of another metal joint, the first recessed portion is formed on the first joint surface of the first member of the wooden structure, and the second recessed portion is formed on the second joint surface of the second member. 2 Used when the first wood and the second wood are joined by bringing the joint surface and the second joint surface into close contact with each other and inserting a metal fitting into the first recessed portion and the second recessed portion. It is a metal fitting for wooden construction, which is characterized by being configured as follows.
(1) In the tubular body, a set of first pin holes orthogonal to the shaft core of the tubular body is formed on the first member side, and a pair of first pin holes orthogonal to the shaft core is formed on the second member side. A set of second pin holes is formed.
(2) The tubular body was formed into a pipe shape by bending a flat plate.
(3) In the tubular body, a dome-shaped tip is formed at one opening end in the axial direction.
(4) The dome-shaped tip portion was formed by being divided into a plurality of parts radially from the axis of the tubular main body.

Further, in the invention of each of the metal joints, the metal joints for wooden construction are configured as follows.
(1) The dome-shaped tip portion was formed with a small opening near the axis of the tubular body, and the peripheral portion of the small opening was bent inward.

Further, in the invention of each of the metal joints, the metal joints for wooden construction are configured as follows.
(1) The dome-shaped tip portion was formed by dividing the dome-shaped tip portion radially from the axis of the tubular main body into a plurality of dome-shaped tip portions and forming the tip projecting pieces.
(2) With the tip projecting piece, an adjacent tip projecting piece formed a tapered edge on the inner surface side of the corresponding edge.
(3) In the axial direction of the tubular body, the other open end facing one open end was bent toward the axial core.

Further, in the invention of each of the metal joints, the metal joints for wooden construction are configured as follows.
(1) The pin holes on one side on which the dome-shaped tip was formed were made into two sets of pin holes, and the pin holes of each set were formed at the same position in the axial direction of the tubular body and orthogonal to each other.
(2) The pin holes on the other side were formed as at least two sets of pin holes, and the pin holes of each set were formed at different positions in the axial direction of the tubular body at right angles to each other.
(3) The pin hole of any set on the other side was formed parallel to the pin hole of any set of the pin hole on the one side.

Further, the invention of this manufacturing method is a joining metal fitting for joining members of a wooden structure, and is a method for manufacturing a building metal fitting characterized by being configured as follows.
(1) A cylindrical tubular body is formed by rolling a flat plate for manufacturing or from a pipe-shaped material. The tubular main body is formed by projecting a large number of substantially isosceles triangular tip protrusions at at least one opening edge at positions corresponding to the base without any gap.
(2) The tip projecting piece side of the tubular body is pressed against a partially spherical concave mold to substantially bring the corresponding edges of the adjacent tip projecting pieces into close contact with each other, and the outside of the axial core of the tubular body. It is formed convexly to form a dome-shaped tip.

Further, the invention of another manufacturing method is a joining metal fitting for joining members of a wooden structure, and is a method for manufacturing a building metal fitting characterized by being configured as follows.
(1) The bases of a plurality of substantially triangular tip protrusions are continuously provided on the one end side of a rectangular flat plate body having two corresponding contact sides and corresponding one end side and the other end side orthogonal to the corresponding contact side. Then, a flat plate for manufacturing is constructed.
(2) The manufacturing flat plate is arranged without a gap near the bottom of the adjacent tip projecting piece.
(3) The circumference of the contact side of the manufacturing flat plate is rounded along the contact side, then the flat plate main body portion parallel to the contact side is rounded, and then the flat plate main body is cylindrical. To form a tubular body.
(4) Next, the tip projecting piece side of the manufacturing flat plate is pressed against a partially spherical concave mold to substantially bring the corresponding edges of the adjacent tip projecting pieces into close contact with each other, and the shaft core of the tubular body is used. On the other hand, it is formed convexly outward to form a dome-shaped tip.

In the above-mentioned "form by projecting a large number of tip protrusions of substantially isosceles triangles at positions corresponding to the base without gaps", "without gaps" means that a slight gap in the work process is formed. That is, in general, when the material is bent, the material swells near both ends (apical points) of the bases of the adjacent isosceles triangles, but the purpose is to form a slight gap to the extent that the swelling of the material is eliminated. Therefore, for example, a gap as long as the base is not formed near the base of an adjacent isosceles triangle.

The building hardware of the present invention has a dome-shaped tip formed on at least one side of the tubular body, and the dome-shaped tip is formed by dividing the dome-shaped tip radially from the axis of the tubular body into a plurality of dome shapes, so that the dome can be easily formed. The shaped tip can be formed, and the dome-shaped tip makes it possible to streamline the assembly work without the tip of the building hardware hitting the side wall of the recessed portion when the wood is inserted into the recessed portion.
Further, when the tubular main body is formed by rolling and bending the flat plate main body, the dome-shaped tip portion is divided, so that it can resist an external force trying to open the contact side of the tubular main body. ..

In the building 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, in the building hardware of the present invention, (a) represents a left side view and (b) represents a right side view. During the manufacturing process of the present invention, (a) is a front view of the manufacturing flat plate before processing, and (b) is a front view of the manufacturing flat plate bent in a pipe shape. In the figure explaining the joining of the members using the building hardware of this invention, (a) shows before joining, and (b) shows after joining. (A) represents a perspective view of a hardware according to an embodiment of the present invention, and (b) represents a 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) and (b) represent bottom views of other embodiments 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) represents a front view of a flat plate for production before processing, and (b) represents an enlarged end view of (a) on the AA line. (A) to (e) are diagrams for explaining a manufacturing procedure using the manufacturing flat plate of FIG. 9, and (a) to (b) are accompanied by end views in a direction perpendicular to the axis.

Regarding the building hardware 40 of the present invention and the method for manufacturing the hardware based on the drawings, A.I. The first embodiment, B.I. The second embodiment will be described respectively.

A. First Embodiment

1. 1. Flat plate for manufacturing 30

(1) The manufacturing flat plate 30 is composed of a rectangular flat plate main body 1 constituting the tubular main body 31 and isosceles triangular tip projecting pieces 10 and 10A connected to one end piece 3 of the flat plate main body 1. The long sides of the rectangular flat plate body 1 form the contact sides 2 and 2, and when bent and rolled, they are arranged so as 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 parallel to both end sides 3 and 4 of the flat plate main body 1 (perpendicular to the contact piece 2) and dividing the contact sides 2 and 2 directions in about half is defined as a substantially central line 5. With the substantially central line 5 in between, one end side 3 side is defined as one side 3a, and the other end side 4 side is defined as the other side 4a (FIG. 3A). When the building hardware 40 is applied to the joint between the lower surface 52 of the horizontal member 50 and the upper surface 62 of the pillar 60, the substantially central line 5 substantially coincides with the positions where the joint surfaces 52 and 62 are in contact with each other (FIG. 4 (FIG. 4). a) (b)).
On one end side 3 of the flat plate main body 1, three tip projecting pieces 10, 10, 10 and three tip projecting pieces 10, 10 and 10 having an isosceles triangle shape are half-split on both sides of the tip half-split pieces 10A and 10A. Each will be installed consecutively. In the tip projecting piece 10, the base of an isosceles triangle is connected to one end side 3 of the flat plate body 1, and the other two sides 11 and 11 of the same length bulge outward (convex outward). It is formed (Fig. 3 (a)).
Further, since the tip half-split piece 10A is substantially half-divided vertically, the length of the base is about half that of the tip tip 10. The tip half-split piece 10A is formed so that the side 11A corresponding to the hypotenuse and the side 11Aa corresponding to the vertical side also bulge outward (convex outward).
Further, the ends of the tip half-split pieces 10A and 10A each reach the contact side 2 (FIG. 3A), and the side 11Aa of the tip half-split piece 10A is formed slightly diagonally from the contact side 2. It is continuously and smoothly bent in the direction in which the contact sides 2 and 2 approach each other (the distance between the contact sides 2 and 2 is narrowed) to reach the side 11Aa (FIG. 3A).
Further, the tip projecting piece 10 and the tip half-split project piece 10A are continuously arranged at one end side 3 (at the bottom of the isosceles triangle of the tip projecting piece 10) without a gap. Here, "without gap" means that one end side 3 is bent so as to be circular, and each tip projecting piece 10 or 10 is bent inward (toward the depth side in FIG. 3A). During processing, swelling of the material occurs inside near both ends of the base of the adjacent isosceles triangle, but a slight gap is formed to eliminate such swelling of the material (FIG. 3 (a)). ).

(2) On one side 3a of the flat plate main body 1, a pair of pin holes 15, 15 and pin holes 16, 16 are formed in parallel with one end side 3 near 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 (FIG. 3A).
Further, on the other side 4a of the flat plate main body 1, two pin holes 18 and 18 are formed in parallel with the other end side 4 near the other end side 4. Further, two pin holes 19 and 19 are formed on the side of the central line 5 from the pin holes 18 and 18. Further, two pin holes 20 and 20 are formed on the side of the central line 5 from the pin holes 19 and 19. One of the pin holes 19 becomes pin hole pieces 19A and 19A that open in the contact piece 11, and the pin hole 19 is formed from the pin hole pieces 19A and 19A (FIG. 3A).

(3) The manufacturing flat plate 30 is formed with the above configuration (FIG. 3 (a)). The manufacturing flat plate 30 is usually formed by punching out from an arbitrary metal flat plate with a press.

2. Manufacture of building hardware 40

(1) The flat plate 30 for manufacturing is bent gradually or at once, and the contact side 2 and the contact side 2 are brought into close contact with each other to form the flat plate main body 1 into a cylindrical shape (pipe shape), and the tubular main body 31 is formed. (Fig. 3 (b)). It is preferable that the contact side 2 and the contact side 2 are in close contact with each other, but the contact side 2 and the contact side 2 should be arranged in a slit shape with a gap between the contact side 2 and the contact side 2. You can also. A straight line penetrating the center of the tubular main body 31 in the length direction is defined as a shaft core 32 (FIGS. 1 (a) and 1 (c)).

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

(3) Subsequently, a manufacturing type recess having a recess in the inner wall that matches the outer shape of the dome-shaped tip 35 to be formed in the tip protrusions 10, 10 and the tip half-split pieces 10A, 10A on the one end side 3 side (3). (Not shown) is gradually pressed to bend the tip projecting pieces 10 and 10A on the one end side 3 side to form the dome-shaped tip portion 35. In this case, depending on the shape of the concave portion, the dome-shaped tip portion 35 is formed so as to bulge outward (convex toward the outside), but it can also be formed in a conical shape (not shown). Further, at this time, the tip projecting pieces 10 and 10 and the adjacent side portions 11 and 11 of the tip half-split project pieces 10A and 10A are in close contact with each other.
Further, at this time, since the tip portion 13 of some tip projecting pieces 10 and the tip portion 13 of the tip half-split projecting piece 10A are each rounded (because the corners are rounded and not sharp) (FIG. 3 (a)). ), A central through hole 36 is formed in the vicinity of the shaft core 32 of the tubular main body 31, and the peripheral portion of the central through hole 36 is recessed inward (to the tubular main body 31 side, substantially to the central line 5 side). To form. The tip portion 13 can also be rounded by all the tip projecting pieces 10 and the tip half-splitting pieces 10A (not shown).

(4) Subsequently, at the same time as (3) above, or before (3), the other end side 4 of the formed tubular main body 31 is pressed against a recess (not shown) of another manufacturing mold. Or, file it off to remove the outer peripheral edge of the other end side 4, or bend the other end side 4 toward the axis 32.

(5) As described above, the building hardware 40 is configured (FIGS. 1, FIG. 2, FIG. 5 (a)).

3. 3. Use of building hardware 40

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

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

(3) Subsequently, while inserting one side 3a of the building hardware 40 into the second recessed portion 63 of the pillar 60, the lower surface 53 of the horizontal member 50 is brought into close contact with the upper surface 63 of the pillar 50.
Subsequently, the pin 71 is inserted from the pin insertion hole 63 of the pillar 60, penetrates the pin holes 16 and 16 of the building hardware 40, and the building hardware 40 is fixed to the pillar 60. As a result, the horizontal member 50 and the pillar 60 are joined via the building 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 building hardware 40, the pin holes 15 and 16 on either side can be easily driven into the pin 71. Corresponding to, pin insertion holes 64 can be formed on any of the other side surfaces 61, 61 of the pillar 60 (not shown).

(5) Although the joining between 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 above, the building hardware 40 is applied to the other joint surfaces. Can also be done (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, and only one set of pin holes 16 and 16 can be formed on the other side 4a (FIGS. 6 and 5 (b)), and two sets of pin holes 16 and 16 can be formed on the other side 4a. Pin holes 18, 20, and the like can also be formed (not shown). That is, if there is at least one set of pin holes on both sides 3a and 4a, more pin holes are arbitrary depending on the length of the building hardware 40 and the like.

(2) Further, in the above embodiment, the tip projecting piece 10 forming the dome-shaped tip portion 35 is composed of three tip projecting pieces 10 and two tip half-split projecting pieces 10A on the contact side, but the tip is formed. The number of projectiles 10 is arbitrary. For example, the dome-shaped tip portion 35 can be formed from the four tip projecting pieces 10 and 10 (FIG. 7 (a)), or the dome-shaped tip portion 35 can be formed from the six tip projecting pieces (FIG. 7 (FIG. 7)). b)).

(3) Further, in the above embodiment, the flat plate main body 1 provided with the tip projecting piece 10 is rolled and bent to form the building hardware 40, but the tip projecting pieces 10 and 10 are formed at one end of the pipe material. It is also possible to construct the building hardware 40 (not shown).

(4) Further, in the above-described embodiment, the dome-shaped tip portion 35 (tip projecting piece 10 or tip half-split projecting piece 10A) is formed on one end side 3 of the tubular main body 31 (one end edge 3 of the flat plate main body 1). A dome-shaped tip portion 35 (tip projecting piece 10 or tip half-split projecting piece 10A) having the same structure can also be formed on the other end side 4 of the tubular main body 31 (the other end side 4 of the flat plate body 1). (Not shown).

(5) Further, in the manufacturing flat plate 30, the pin holes 19A and 19A and the pin holes 16A and 16A are divided by the contact sides 2 and 2, and the manufacturing flat plate 30 is rolled to form the tubular main body 31. Although the pin holes 19 and 16 are arranged so as to form the pin holes 19, respectively, 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. 8 (a)). ). In this case, the tubular main body 31 does not have a pin hole that penetrates the contact sides 2 and 2 (slits).

(6) Further, in the above embodiment, the contact sides 2 and 2 of the flat plate main body 1 of the flat plate body 30 for manufacturing are formed in a straight line, but a convex portion 2a is formed on one side and a concave portion 2b is formed on the other side to form a tubular shape. When the main body 31 is formed, the convex portion 2a and the concave portion 2b may be fitted to the other. For example, a rectangular convex portion 2a is formed on one side and a rectangular concave portion 2b is formed on the other side at a position between the pin holes 15 and 16 and one end side 3 (tip protrusion 10) (therefore, FIG. 8B). In this case, the convex portion 2a and the concave portion 2b are located between the dome-shaped tip portion 35 (tip protrusion 10) and the pin holes 15 and 16 in the tubular main body 31.

(7) Further, in the above-described embodiment, the contact sides 2 and 2 of the flat plate main body 1 of the flat plate body 30 for manufacturing are formed in a straight line, but they can also be formed by being greatly bent (FIGS. 8 (c) to 8 (c)). e)).
For example, the contact sides 2 and 2 form a large wavy shape (for one cycle) so as to fit each other (FIG. 8 (c). In this case, the pin holes 18, 19, 20, 15, 16 are formed. Although the contact sides 2 and 2 do not penetrate (FIG. 8 (c)), they can also penetrate (not shown).
For example, a large convex portion 2a and a concave portion 2b may be fitted to each other on the contact sides 2 and 2 of the flat plate main body 1 of the flat plate body 30 for manufacturing, and three shapes may be formed to form a stepped shape ( FIG. 8 (d)). In this case, in the state where the tubular 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. 8 (d)). It can also be placed in a position that does not allow it (not shown).
Further, for example, the contact sides 2 and 2 of the flat plate main body 1 of the manufacturing flat plate 30 may be fitted in a zigzag shape in which large triangular irregularities are formed (FIG. 8 (e)). In this case, in the state where the tubular 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. 8 (e)), but do. It can also be placed in position (not shown).

(8) Further, in the above-described embodiment, the contact sides 2 and 2 orthogonal to the one end side 3 and the other end side 4 are formed in a straight line, and the flat plate main body 1 of the manufacturing flat plate 30 is formed in a rectangular shape. It is also possible to form the side 3 and the other end side 4 and the contact sides 2 and 2 at an angle without making them orthogonal to each other, and to form the flat plate body 1 of the manufacturing flat plate 30 into a parallelogram. In this case, with the tubular main body 31 formed, the contact sides 2 and 2 (slits) are oblique with respect to the length direction of the tubular main body 31 (with respect to one end side 3 and the other end side 4). It is arranged (FIG. 8 (f)). In this case, the contact sides 2 and 2 (slits) penetrate the pin holes 20A and 20A (FIG. 8 (f)), but can also penetrate the other pin holes or do not penetrate the pin holes (FIG. 8 (f)). Neither is 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 embodiment, and the structure of the tip projecting piece 10 is different from that of the embodiment. Further, in the manufacturing flat plate 30, the side located on the outer side when rolled into a tubular shape is referred to as the outer surface 7, and the side located on the inner side is referred to as the inner surface 7a. Further, the configuration of the formed building hardware 40 and the use of the formed building hardware 40 are the same as those in the first embodiment.

1. 1. Flat plate for manufacturing 30

(1) Similar to the first embodiment, when the long sides of the rectangular flat plate main body 1 constituting the tubular main body 31 are bent and rounded, the contact sides 2 and 2 are arranged so as to face each other. The short side constitutes one end side 3 and the other end side 4. A line parallel to both end sides 3 and 4 of the flat plate main body 1 (perpendicular to the contact piece 2) and dividing the contact sides 2 and 2 directions in about half is defined as a substantially central line 5. With the substantially central line 5 in between, one end side 3 side is defined as one side 3a, and the other end side 4 side is defined as the other side 4a (FIGS. 9 (a) and 3 (a)). When the building hardware 40 is applied to the joint between the lower surface 52 of the horizontal member 50 and the upper surface 62 of the pillar 60, the substantially central line 5 substantially coincides with the positions where the joint surfaces 52 and 62 are in contact with each other (FIG. 9 (FIG. 9). a), FIG. 3 (a)).
On one end side 3 of the flat plate main body 1, three tip projecting pieces 10a, 10b, 10a and three tip projecting pieces 10a, 10b, 10a having an isosceles triangle shape are half-split on both sides of the tip half-split pieces 10A, 10A. Each will be installed consecutively. In the tip projecting pieces 10a, 10b, and 10a, the base of the isosceles triangle is connected to one end side 3 of the flat plate body 1, and the other two sides 11 and 11 of the same length bulge outward (outside). (Convex toward) is formed (FIGS. 9 (a) and 9 (b), FIG. 3 (a)).
Further, as in the first embodiment, since the tip half-split piece 10A is substantially half-divided vertically, the length of the base is about half that of the tip tip 10. It has become. The tip half-split piece 10A is formed so that the side 11A corresponding to the hypotenuse and the side 11Aa corresponding to the vertical side also bulge outward (convex outward). Further, the ends of the tip half-split pieces 10A and 10A each reach the contact side 2 (FIGS. 9 (a) (b) and 3 (a)), and the side 11Aa of the tip half-split piece 10A is slightly oblique. It is formed in the above direction and bends continuously and smoothly from the contact side 2 in the direction in which the contact sides 2 and 2 approach (the distance between the contact sides 2 and 2 is narrowed) to reach the side 11Aa (FIG. 9 (a)). ) (B), FIG. 3 (a)).

(2) Here, among the tip projecting pieces 10a, 10b, and 10a, the tip projecting pieces 10a and 10a (corresponding to the pin holes 15, 18, and 20 described later) adjacent to the tip half-split projecting piece 10A The apex of the isosceles triangle) 13a has a slightly sharp shape, and the tip projecting piece 10b (corresponding to pin holes 16 and 19) and the tip half-split projecting piece 10A, which are other tip projecting pieces 10 other than the tip projecting piece 10a The tip (vertex of an isosceles triangle) 13A is rounded to a shape close to flat (FIGS. 9 (a) and 9 (b)).
Further, in the tip projecting piece 10a, a tapered edge 21 formed on the inner surface 7a side of the flat plate 30 on the sides 11 and 11 so that the material thickness becomes thinner along the side 11 is formed (FIGS. 9 (b) and 9 (c)). ). Therefore, the "tip protrusion 10a" having the tapered edge 21 and the "tip protrusion 10b, tip half-split 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 projecting piece 10a and the tip projecting piece 11b have substantially the same shape.
Further, the tip projecting pieces 10a, 10b, 10a and the tip half-split projecting piece 10A are continuously arranged at one end side 3 (at the corner of the base of the isosceles triangle) without a gap. Here, “without gap” is the same as the above-described embodiment. That is, one end side 3 is bent so as to be circular, and each tip projecting piece 10 or 10 is bent inward (the depth side in FIGS. 9A and 3A). During processing, swelling of the material occurs inside near both ends of the base of the adjacent isosceles triangle, but a slight gap is formed to eliminate such swelling of the material (FIG. 9 (a)). (B), FIG. 3 (a)).

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

(4) The manufacturing flat plate 30 is formed with the above configuration (FIG. 9 (a)). The manufacturing flat plate 30 is usually formed by punching out from an arbitrary metal flat plate with a press.

2. Manufacture of building hardware 40

(1) The flat plate main body 1 of the manufacturing flat plate 30 is bent at a curvature larger than the curvature of the tubular main body 31 to be formed along the abutting sides 2 and 2 around both abutting sides 2 and 2. (Fig. 10 (a)).
Subsequently, the flat plate main body 1 of the manufacturing flat plate 30 is bent around the axial center line 6 with a curvature larger than the curvature of the tubular main body 31 to be formed (FIG. 10 (b)).
Subsequently, in the flat plate main body 1 of the manufacturing flat plate 30, the periphery of the axial center line 6 bent with a large curvature is bent with a curvature substantially the same as the curvature of the tubular main body 31 to be formed (FIG. 10 (c)). ).
Subsequently, the flat plate main body 1 of the manufacturing flat plate 30 is bent with the same curvature as 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 to bring the flat plate main body into close contact with each other. 1 is formed into a cylindrical shape (pipe shape) to form a tubular main body 31 (FIG. 10 (d)). It should be noted that the contact side 2 and the contact side 2 may be arranged with a slight gap in a state of being lightly in contact with each other or in a state of forming a slit, as in the above embodiment (shown in the figure). Not).

(2) In this state, similarly to the first embodiment, the shaft connecting the pin holes 15 and 15 and the shaft connecting the pin holes 16 and 16 on one side 3a are orthogonal to the shaft core 32, respectively. And both axes are also orthogonal to each other. Further, on the other side 4a, the shaft connecting the pin holes 18 and 18, the shaft connecting the pin holes 19 and the shaft connecting the pin holes 20 and 20 are orthogonal to the shaft core 32, and the pin holes 18 and 18 are formed. The axis connecting the pin holes 20 and 20 is 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. It is formed (see FIGS. 1 and 2).

(3) Subsequently, as in the first embodiment, the inner wall of the tip projecting pieces 10a and 10b on the one end side 3 side and the tip half-split projecting piece 10A is formed in accordance with the outer shape of the dome-shaped tip portion 35. A "manufacturing type recess" (not shown) having a recess is pressed gradually or all at once to bend the tip projecting pieces 10 and 10A on the one end side 3 side to form a dome-shaped tip 35. .. In this case, depending on the shape of the concave portion, the dome-shaped tip portion 35 is formed so as to bulge outward (convex toward the outside), but it can also be formed in a conical shape (not shown). Further, at this time, the adjacent sides 11, 11A, and 11Aa of the tip projecting pieces 10a and 10b and the tip half-split projecting pieces 10A and 10A come into contact with each other. In this case, since the tapered edge 21 is formed on the side 11 of the tip projecting piece 10a, the opposite sides of the tip projecting 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). Very few can be brought into close proximity or contact. Further, the "manufacturing mold recess" is also formed with a convex portion (not shown) for molding the central through hole 36 and the central recess 37, so that the entire dome-shaped tip portion 35 can be formed. There is.
Further, at this time, as in the first embodiment, the tip projecting piece 10b and the tip portions 13b and 13b of the tip half-split projecting piece 10A are rounded by pressing against the "manufacturing mold recess", respectively. Therefore (because the corners are rounded and not sharp), a central through hole 36 is formed near the axis 32 of the tubular main body 31, and the peripheral portion of the central through hole 36 is inside (on the tubular main body 31 side). A central recess 37 (on the center line 5 side) is formed (FIG. 9 (e)). In addition, similarly to the said embodiment, it is also possible to round with all the tip projecting pieces 10 and the tip half split projecting pieces 10A including the tip portion 13a (not shown).

(4) Similar to the first embodiment, the other end side 4 of the tubular main body 31 formed subsequently, at the same time as (3), or before (3) is formed by another manufacturing type. It is pressed against a concave portion (not shown) or scraped with a file to remove the outer peripheral edge of the other end side 4, or bend the other end side 4 toward the shaft core 32 side.

(5) As described above, the building hardware 40 is configured (FIGS. 1, FIG. 2, FIG. 9 (e)). Normally, the processes from FIGS. 10 (a) to 10 (d) are performed, and the hardware (FIG. 10 (d)) in the process of being manufactured is once taken out from the processing machine, and the tip projecting piece is used by another processing machine. 10a, 10b, the tip half-split piece 10A, and the other end side 4 are machined.

1 Flat plate body 2 Contact side (flat plate body)
3 One end side (flat plate body, one open end)
3a One side 4 The other end (flat plate body, other end)
4a Other side 6 Axial center line 7 Outer surface of flat plate 7a Inner surface of flat plate 10, 10a, 10b Tip projecting piece 10A Tip half-split projecting piece 11, 11A, 11Aa Side (tip projecting piece, tip half-split projecting piece)
13, 13a, 13A Tip (tip protrusion, tip half-split piece)
15 and 16 pin holes (one side)
18, 19, 20 pin holes (other side)
21 Tapered edge of tip projecting piece 30 Flat plate for manufacturing 31 Cylindrical body 32 Axial core 35 Dome-shaped tip 36 Central through hole (dome-shaped tip)
37 Central recess (dome-shaped tip)
40 Building hardware 50 Horizontal material (first member)
51 Side surface of horizontal member 52 Lower surface of horizontal member (first joint surface)
53 First recessed portion of horizontal member 54, 55 Pin insertion hole of horizontal member 60 Pillar (second member)
61 Side surface of pillar 62 Top surface of pillar (Kiguchi. Second joint surface)
63 Pillar second recess 64 Pillar pin insertion holes 70, 71 Pins

Claims (2)

A method for manufacturing a building hardware, which is a joining metal fitting for joining members of a wooden structure, and is characterized in that it is constructed as follows.
(1) A cylindrical tubular body is formed by rolling a flat plate for manufacturing or from a pipe-shaped material. The tubular main body is formed by projecting a large number of substantially isosceles triangular tip protrusions at at least one opening edge at positions corresponding to the base without any gap.
(2) The tip projecting piece side of the tubular body is pressed against a partially spherical concave mold to substantially bring the corresponding edges of the adjacent tip projecting pieces into close contact with each other, and the outside of the axial core of the tubular body. It is formed convexly to form a dome-shaped tip. A method for manufacturing a building hardware, which is a joining metal fitting for joining members of a wooden structure, and is characterized in that it is constructed as follows.
(1) The bases of a plurality of substantially triangular tip protrusions are continuously provided on the one end side of a rectangular flat plate body having two corresponding contact sides and corresponding one end side and the other end side orthogonal to the corresponding contact side. Then, a flat plate for manufacturing is constructed.
(2) The manufacturing flat plate is arranged without a gap near the bottom of the adjacent tip projecting piece.
(3) The circumference of the contact side of the manufacturing flat plate is rounded along the contact side, then the flat plate main body portion parallel to the contact side is rounded, and then the flat plate main body is cylindrical. To form a tubular body.
(4) Next, the tip projecting piece side of the manufacturing flat plate is pressed against a partially spherical concave mold to substantially bring the corresponding edges of the adjacent tip projecting pieces into close contact with each other, and the shaft core of the tubular body is used. On the other hand, it is formed convexly outward to form a dome-shaped tip.

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