JP6907017B2 - Architectural hardware - Google Patents

Description

The present invention relates to building hardware that forms bolts and nuts on the surface of columns and horizontal members.

Conventionally, a nut for construction called a nut with a seat is constructed by projecting a nut (a cylindrical body having a thread formed on the inner surface) on one surface of a disk. This seated nut is, for example, inserted from the upper surface into a base provided with a vertical hole for inserting the nut, and a disc of the seated nut is embedded in the base while scraping the upper surface of the base with a cutting blade formed on the inner surface. The upper surface of the base and the upper surface of the disc of the nut with a seat were flush with each other, and the threaded portion at the upper end of the anchor bolt embedded in the concrete foundation was screwed and tightly connected to the nut.
In this case, the cutting blade of the seated nut on one surface of the disk was generally formed by forging.

Japanese Unexamined Patent Publication No. 2002-242318 Japanese Unexamined Patent Publication No. 2001-343011

In the case of the seated nut, in the case of forging, the cutting edge of the cutting blade cannot be formed sharply, and a separate finishing step is required to form the nut sharply.

In the present invention, a wedge-shaped concave portion is formed on the other surface of the disk, and a wedge-shaped convex portion is formed at a position corresponding to the concave portion on one surface of the disk. Was solved.

That is, in the first invention, the nut shaft or the bolt shaft is provided by aligning the shaft cores on one surface of the disk-shaped base, and when the wooden members are joined, the wooden members are formed on the application surface of the wooden members and are formed in the through holes. It is a hardware used by inserting a nut shaft or a bolt shaft and having one surface of the wooden member abutting against an applicable surface of the wooden member, and is characterized in that it is configured as follows.
(1) A wedge-shaped recess was formed on the outer peripheral side on the other surface of the substrate.
(2) Corresponding to the wedge-shaped concave portion, a wedge-shaped convex portion protruding on one side in contact with the wooden member was formed.
(3) A tapered surface was formed between the base end of the nut shaft or the bolt shaft and one surface of the disk.
(4) When the nut shaft or the bolt shaft is inserted into the through hole of the wooden member to be applied and one surface of the disk is brought into contact with the application surface of the wooden member, the opening edge of the through hole. The tapered surface and the wedge-shaped convex portion were formed so that the wedge-shaped convex portion abuts on the applicable surface of the wooden member before the tapered surface or one surface of the disk abuts on the wooden member.

Further, in the second invention, a wooden member having a nut shaft whose shaft core is aligned on one surface of a disk-shaped base and which has a locking portion for a rotary tool is joined to the shaft core on the other side of the base. A metal fitting that is formed on the application surface of the wooden member, the nut shaft is inserted into the through hole, and the one surface is brought into contact with the application surface of the wooden member. It is a building hardware characterized by being composed.
(1) A wedge-shaped concave portion is formed on the outer peripheral side on the other surface of the base, and a wedge-shaped convex portion is formed on one surface of the base that abuts on the wooden member so as to correspond to the wedge-shaped concave portion.
(2) The wedge-shaped convex portion forms a substantially right-angled surface substantially perpendicular to the one surface on the front side in the rotation direction and a slope toward the one surface on the rear side in the rotation direction in the circumferential direction along the outer circumference. ..
(3) A tapered surface was formed between the base end of the nut shaft and one surface of the disk.
(4) When the nut shaft is inserted into the through hole of the wooden member to be applied and one surface of the disk is brought into contact with the application surface of the wooden member, the tapered surface is brought into the opening edge of the through hole. Alternatively, the tapered surface and the wedge-shaped convex portion are formed so that the wedge-shaped convex portion abuts on the applicable surface of the wooden member before one surface of the disk abuts.

Further, in the above, it is a building hardware formed as follows.
(1) An inner peripheral thick portion was formed between the nut shaft and the inner peripheral side of one surface of the disk, and a tapered surface was formed on the outer peripheral side of the inner peripheral thick portion.
(2) The maximum outer diameter line of the locking portion for the rotary tool on the other surface was positioned inside the inner circumference of the inner peripheral thick portion.
(3) A radial auxiliary cutting blade was provided so as to project from the inner peripheral thick portion or the tapered surface.

The present invention is a building hardware for a wooden structure, in which a wedge-shaped concave portion is formed on the outer peripheral side on the other surface of the disk, and a wedge-shaped convex portion is formed on one surface correspondingly. By pressing the wedge-shaped convex portion against the wooden member, the rotation of the disk can be restricted and a nut shaft or a bolt shaft can be formed on the wooden member. Further, since a wedge-shaped convex portion is formed on one surface of the disk and a wedge-shaped concave portion is formed on the other surface, a wedge-shaped convex portion can be formed on the other surface side by pressing from the other surface side of the disk in a wedge shape. Therefore, a wedge-shaped convex portion having a large protrusion amount and a sharp cutting edge can be easily formed.
Therefore, if the wedge-shaped convex portion is used as a blade for cutting a wooden member and this hardware is applied to a screw washer or the like, a wedge-shaped convex portion having a more efficient structure can be easily constructed depending on the application location.

In the first embodiment of the building hardware of the present invention, (a) is a perspective view on the plane side, (b) is a perspective view on the bottom side, and (c) is a vertical sectional view showing a state in which the building hardware is attached. be. In the first embodiment of the building hardware of the present invention, (a) is a plan view, (b) is a front view, (c) is a right side view, and (d) is a bottom view. In the first embodiment of the building hardware of the present invention, (a) is a sectional view taken along the line AA, (b) is a sectional view taken along the line BB, and (c) is a sectional view taken along the line CC. In the second embodiment of the building hardware of the present invention, (a) is a perspective view on the plane side, (b) is a perspective view on the bottom surface side, and (c) is a sectional view taken along line CC. In the second embodiment of the building hardware of the present invention, (a) is a perspective view on the plane side, (b) is a perspective view on the bottom surface side, (c) is a cross-sectional view taken along the line DD, and (d) is an E. -E cross-sectional view. In the third embodiment of the building hardware of the present invention, (a) is a plan view, (b) is a front view, (c) is a right side view, (d) is an FF sectional view, and (e) is. Shows the bottom view.

Embodiments of the present invention will be described with reference to the drawings.

A. First Embodiment (FIGS. 1 to 5)

1. 1. Composition of building hardware 50

(1) On one side 2 of a disk 1 having a thickness of t0, a nut shaft (outer diameter D0) 7 having a screw thread 8 formed therein is projected so as to align the shaft core 5. A donut-shaped inner peripheral thick portion 11 having a thickness of t1 is formed between the inner peripheral side of the disk 1 and the nut shaft 7 (FIG. 3A).
The inner peripheral thick portion 11 has an outer peripheral flat surface 13 on the outer peripheral side (that is, the thickness of the outer peripheral flat surface 13 from one surface 2 of the disk 1 is t1. FIG. 3A), and the inner peripheral side is The thickness of the disk is gradually increased so as to gradually increase, and a tapered surface 14 in contact with the outer surface of the nut shaft 7 is gradually formed. Therefore, a step is formed between the inner peripheral side of one surface 2 of the disk 1 and the outer peripheral edge 12 of the inner peripheral thick portion 11 (FIG. 3A).
Four auxiliary cutting blades 16 long in the radial afferent direction are formed at equal intervals in the circumferential direction so as to straddle the inner peripheral thick portion 11, that is, the inner peripheral side of the tapered surface 14 and the outer peripheral flat surface 13. The auxiliary cutting blade 16 projects from the inner peripheral side of the tapered surface 14 and the outer peripheral flat surface 13.

(2) A hexarobuler hole 21 is formed on the other surface 3 of the disk 1 so that the bit 59 of the rotary tool 58 can be inserted and fitted (FIG. 1 (c)). The maximum outer diameter wire 22 of the hexarobula hole 21 is formed to be smaller than the maximum outer diameter (diameter of the outer peripheral edge 12) of the inner peripheral thick portion 11. That is, the inner peripheral thick portion 11 is formed to be at least larger than the maximum outer diameter line 22 of the hexarobula hole 21 (FIGS. 2 (d) and 3 (a) and (b)). The maximum outer diameter line 22 is a circle in which the hexarobula hole 21 fits. Further, the hexarobula hole 21 communicates with the hollow portion (thread portion 8) of the nut shaft 7.
Instead of the hexarobula hole 21, another hole that is normally used (corresponding to the shape of the bit 69) can be formed if it can be fitted with the bit 59 of the normal rotary tool 58. For example, a hexagonal hole, a cross hole, a minus hole, etc. (not shown). Further, the structure is not limited to the hole structure, and a protrusion structure corresponding to the bit 59 of the rotary tool 58 can be used (not shown).

(3) Further, the outer circumference 3a of the other surface 3 of the disk 1 is chamfered over the entire circumference, and is formed into a curved surface by a "quarter" circle.

(4) After forming the above shape by forging, a wedge-shaped recess 30 is formed on the other surface 3 side of the disk 1 from the outer peripheral side 3a to the inner peripheral side of the disk 1 with a wedge-shaped press mold 25. ..
The wedge-shaped recess 30 is formed in the substantially radial afferent direction of the disk 1, the front edge 32 is formed in a linear shape substantially perpendicular to the other surface 3 of the disk 1 in the rotation direction 18, and the radial direction 19 (radiation). The outer peripheral edge 32a is formed to be inclined so as to be located slightly behind the inner peripheral edge 32b in the rotational direction 18 with respect to the centripetal direction (FIG. 2A). Further, the front edge 32 in the rotation direction 18 is formed so as to be inclined so that the outer peripheral edge 32a is the deepest and gradually becomes shallower toward the inner peripheral edge 32b side.
Further, in the wedge-shaped recess 30, the rear edge 33 in the rotation direction 18 is formed substantially linearly, and the outer peripheral edge 33a is located slightly behind in the rotation direction 18 as compared with the inner peripheral edge 33b. , And the straight line from the outer peripheral edge 33a to the inner peripheral edge 33b (= rear edge 33 in the rotation direction 18) is formed to be inclined more than the front edge 32 in the rotation direction 18. .. Further, the height of the rear edge 33 in the rotation direction 18 is shallowly formed so as to be substantially the same as the other surface 3 of the disk 1 (FIGS. 1 (a) and 1 (b) and 2).
Therefore, the wedge-shaped recess 30 also has an outer peripheral edge 31 (= a line from the outer peripheral edge 32a of the front edge 32 in the rotation direction 18 to the outer peripheral edge 33a of the rear edge 33 in the rotational direction 18) leading to the outer peripheral surface 4 of the disk. It is formed at an angle. Further, on the bottom surface of the wedge-shaped recess 30, the edge 32a on the outer peripheral side is the deepest with respect to the other surface 3 of the disk 1 at the front edge 32 in the rotation direction 18, and becomes shallower toward the edge 32b on the inner peripheral side. It is formed so as to be inclined so as to be inclined toward the front edge 32 in the rotation direction 18 (FIGS. 1A and 1B, FIG. 2).

(5) In the wedge-shaped press mold 25, a wedge-shaped convex portion 40 is formed on one surface 2 side of the disk 1 at substantially the same position corresponding to the wedge-shaped concave portion 30 formed on the other surface 3 of the disk 1. .. The wedge-shaped convex portion 40 is formed by forming the wedge-shaped concave portion 30 by the press mold 25, so that the material of the disk 1 is extruded from the other surface 3 to the one side 2 side. Therefore, the volume is slightly wedge-shaped concave portion 30> wedge-shaped convex portion 40.
However, the shapes are almost the same.
That is, the wedge-shaped convex portion 40 is formed in the substantially radial afferent direction of the disk 1, the front edge (blade edge) 42 is formed in the rotation direction 18 in a straight line substantially perpendicular to one surface 2 of the disk 1. The outer peripheral edge 42a is formed to be inclined so as to be located slightly behind the inner peripheral edge 42b in the rotational direction 18 with respect to the radial direction 19 (radiation afferent direction) (FIG. 2 (d)). Further, the front edge 42 in the rotation direction 18 is formed so as to be inclined so that the outer peripheral edge 42a is the deepest and gradually becomes shallower toward the inner peripheral edge 42b side.
Further, in the wedge-shaped convex portion 40, the rear edge 43 in the rotation direction 18 is formed substantially linearly, and the outer peripheral edge 43a is located slightly behind in the rotation direction 18 as compared with the inner peripheral edge 43b. In addition, the slope of the straight line from the outer peripheral edge 43a to the inner peripheral edge 43b (= the rear edge 43 in the rotation direction 18) is formed to be larger than the front edge 42 in the rotation direction 18. There is. Further, the height of the rear edge 43 in the rotation direction 18 is shallowly formed so as to be substantially the same as the one surface 2 of the disk 1 (FIGS. 1 (a) and 1 (b) and 2).
Therefore, the wedge-shaped convex portion 40 has an outer peripheral edge 41 that reaches the outer peripheral surface 4 of the disk (= a line from the outer peripheral edge 42a of the front edge 42 in the rotational direction 18 to the outer peripheral edge 43a of the rear edge 43 in the rotational direction 18). Is also formed at an angle. Further, in the wedge-shaped convex portion 40, at the front edge 42 in the rotation direction 18, the outer peripheral edge 42a protrudes most from one surface 2 of the disk 1, and the protrusion becomes smaller toward the inner peripheral edge 42b. It is formed so as to be inclined so that the protrusion becomes smaller toward the front edge 42 in the rotation direction 18 (FIGS. 1A and 1B, FIG. 2).

(6) Further, in the pressing process by the press mold 25, the disk 1 is moved from the front edge 32 in the rotation direction 18 of the wedge-shaped concave portion 30 and toward the front edge 42 in the rotation direction 18 of the wedge-shaped convex portion 40. The cut cutting line 46 is formed, but the cutting line 46 is in close contact with each other and no gap is formed (FIGS. 1A and 1B). Further, as described above, the outer circumference 42a (outer peripheral edge 41) of the front edge 42 in the rotation direction 18 of the wedge-shaped convex portion 40 has the maximum amount of protrusion from one surface 2 of the disk 1. Here, when the length L2 is set from the vicinity of the outer peripheral edge 12 of the inner peripheral thick wall 11 to the maximum protrusion of the wedge-shaped convex portion 40 (the outer peripheral 42a of the front edge 42 in the rotation direction 18) on one surface 2 of the disk 1. (Fig. 3 (c)),
L2 ≒ Disk 1 thickness t0 × 0.5
It has become. With the conventional manufacturing method, only about 20% of the thickness t0 of the disk can be formed at most. Therefore, according to the manufacturing method of the present invention, the wedge-shaped convex portion 40 having a larger protrusion amount can be easily formed. It depends on the thickness t0 of the disk 1 and the structure of the press mold 25.
L2 ≒ Disk 1 thickness t0 × 0.2 to t0 × 0.8
A certain amount of protrusion can be secured.

(7) As described above, the building hardware 50 is configured (FIGS. 1 to 3).

2. Use of building hardware 50

(1) This building hardware 50 is used as a so-called seated nut or screw washer applied to a wooden structure. For example, the upper end 54 of the anchor bolt 53 embedded in the concrete foundation 51 protrudes from the upper surface 52 of the concrete foundation 51, and the foundation 55 is placed on the upper surface 52 of the concrete foundation 51, and the through hole (diameter) of the foundation 55 is placed. D1) 57 accommodates the upper end portion 54 of the anchor bolt 53. A screw thread is formed on the upper end portion 54 of the anchor bolt 53.
Subsequently, the nut shaft 7 of the building hardware 50 is inserted into the through hole 57 of the base 55, the disk 1 is turned by hand, and the upper end portion (thread portion) 54 of the anchor bolt 53 is screwed with the nut shaft 7. Lightly screw into the portion 8. At this time, the building hardware 50 can be easily turned by using the wedge-shaped recess 30.
Subsequently, the bit 59 of the rotary tool 58 is inserted and fitted into the hexalobular hole 21 of the building hardware 50, the rotary tool 58 is operated, and the upper surface 56 of the base 55 is cut off by the wedge-shaped convex portions 40, 40. While doing so, insert the disk 1 into the base 55. The construction of the building hardware 50 is completed with the upper surface 56 of the base 55 and the other surface 3 of the disk 1 flush with each other (FIG. 1 (c)).

(2) Here, when the nut shaft 7 of the building hardware 50 having the outer diameter D0 is inserted into the through hole 57 of the base 55 having the diameter D1 (> D0), first, the maximum protruding portion of the wedge-shaped convex portion 40 is formed. (= The outer peripheral edge 42a of the front edge 42 in the rotation direction 18) hits the upper surface 56 of the base 55, and then when the building hardware 50 is pushed in, the wedge-shaped convex portion 40 sinks into the upper surface 56 of the base 55, and the building hardware The tapered surface 14 or the auxiliary cutting edge 16 of 50 hits the opening edge 57a of the through hole 57 (that is, the upper surface 56 of the base 55). In this way, the through hole 57 of the base 55 to be applied, the nut shaft 7, the tapered surface 14, and the wedge-shaped convex portion 40 are configured (FIG. 2 (c)). Therefore, at the beginning of the rotation of the building hardware 50, only the outer peripheral edge 42a of the front edge 42 in the rotation direction 18 of the wedge-shaped convex portion 40 excavates only the vicinity of the outer peripheral portion of the disk 1, and then the auxiliary cutting blade 16 Since the entire disk 1 is scraped by the entire front edge 42 in the rotation direction 18 of the wedge-shaped convex portion 40 on the inner peripheral side, the load at the initial stage of rotation is small, and the upper surface 56 of the base 55 is surely scraped and the disk 1 is scraped. Can be buried.
For example, when the outer diameter D0 = 16 mm of the nut shaft 7, the through hole 57 is formed with a diameter D1 = 18 mm (a gap of about 1 mm is formed on the outer circumference of the nut shaft 7).

(3) In the above (1), before inserting the building hardware 50 into the vertical hole 57 of the base 55, the hexalobular hole 21 of the building hardware 50 is fitted into the bit 59 of the rotary tool 58. In this state, the nut shaft 7 of the building hardware 50 is inserted into the vertical hole 57 of the base 55, the upper end portion (thread portion) 54 of the anchor bolt 53 faces the nut shaft 7, and the rotary tool 58 is operated. You can also do it.

(4) In the above, the building hardware 50 was installed on the base 55, but it is applied to other places such as beams, other horizontal members, columns, and other wooden members having through holes 57 in which the nut shaft 7 is to be embedded. It can also be (not shown).

3. 3. Other Embodiments of Building Hardware 50

(1) In the above embodiment, the wedge-shaped convex portion 30 and the wedge-shaped concave portion 40 are provided at two points rotationally symmetrically, but three or more can be formed (not shown).
Further, although the auxiliary cutting blade 16 is provided in the above embodiment, the auxiliary cutting blade 16 may be omitted (not shown).
Further, in the above embodiment, the step may be omitted in the inner peripheral thick portion 11 so as to be continuous in a tapered shape from the inner surface of the disk 1 to the outer peripheral edge 12 of the inner peripheral thick portion 11 (not shown). .. Further, the tapered surface 14 may be omitted in the inner peripheral thick portion 11 (not shown).

(2) Further, in the above embodiment, the wedge-shaped concave portion 30 and the wedge-shaped convex portion 40 have the front edges 32 and 42 in the rotation direction 18, and the outer peripheral edges 32a and 42a are the inner peripheral edges with respect to the radial direction 19. Although it is formed so as to be located on the front side in the rotation direction 18 as compared with 32b and 42b (FIGS. 2 (a) and 2 (d)), the front edges 32 and 42 can be aligned with the radial direction 19 (FIG. 4). (A) (c)). In this case, the other configurations are the same as those of the above embodiment (FIGS. 1 to 3) (FIGS. 4 and 5).
On the contrary, the outer peripheral edges 32a and 42a can be formed so as to be located behind the inner peripheral edges 32b and 42b in the rotation direction 18 (not shown).

(3) Further, in the above-described embodiment, the wedge-shaped concave portion 30 and the wedge-shaped convex portion 40, and the rear edges 33 and 43 in the rotation direction 18 are the same as those related to (2) regarding the front edges 32 and 42 (2). Not shown).

B. Second embodiment (FIG. 6)

1. 1. Composition of building hardware 65

(1) On one surface 2 of a disk 1 having a thickness of t0, a shaft core 5 is aligned, and a bolt shaft (bar member) 61 having a thread 62 formed on the lower outer surface is projected. Further, the other surface 3 of the disk 1 is formed flat.

(2) A wedge-shaped recess 30 is formed on the outer peripheral portion of the disk 1 on the other surface 3 side of the disk 1 with a wedge-shaped press mold 25a. The wedge-shaped recess 30 is formed in a triangular shape in a front view so that the front edge 32 has the maximum depth in the rotation direction 18 of the disk 1 and gradually becomes shallower toward the rear edge 33 in the rotation direction 18. ing. Further, the front edge 32 in the rotation direction 18 is formed substantially at right angles to the other surface 3 of the disk 1.
Further, in the rotation direction 18, the front edge 32 and the rear edge 33 are linear and are formed parallel to the radial direction (radiation afferent direction) 19 (FIG. 6A).

(3) In the wedge-shaped press mold 25a, a wedge-shaped convex portion 40 is formed on one surface 2 side of the disk 1 at substantially the same position corresponding to the wedge-shaped concave portion 30 formed on the other surface 3 of the disk 1. .. That is, the wedge-shaped convex portion 40 is formed on one surface 3 side of the disk 1 on the outer peripheral portion of the disk 1, and the front edge 42 is the maximum depth in the rotation direction 18 of the disk 1 and the rear side is in the rotation direction 18. It is formed in a triangular shape when viewed from the front so that it gradually becomes shallower toward the edge 43. Further, the front edge 43 is formed substantially at right angles to one surface 2 of the disk 1.
Further, in the rotation direction 18, the front edge 42 and the rear edge 43 are linear and are formed parallel to the radial direction (radiation afferent direction) 19 (FIG. 6 (e)).

(4) Further, the wedge-shaped convex portion 40 is formed in a substantially rectangular shape (the outer peripheral edge 41 is a curved surface) when viewed from the bottom surface, and the front edge 32 and the rear edge 33 are formed substantially in parallel (FIG. FIG. 5 (a)). Similarly, the wedge-shaped recess 30 is also formed in a substantially rectangular shape (the outer peripheral edge 31 is a curved surface) in a plan view, and the front edge 42 and the rear edge 43 are formed substantially parallel to each other (FIG. 6 (e). )).
Further, as in the above embodiment, in the pressing step using the press mold 25a, the wedge-shaped concave portion 30 is directed toward the front edge 32 in the rotational direction 18 and the wedge-shaped convex portion 40 is directed toward the front edge 42 in the rotational direction 18. , The cutting line 46 from which the disk 1 is cut is formed, but the cutting lines 46 are in close contact with each other and no gap is formed (FIGS. 6 (a), (b), and (e)).
As described above, the building hardware 65 is configured (FIG. 6). Here, the wedge-shaped concave portion 30 and the wedge-shaped convex portion 40 are formed at two locations each in a rotationally symmetric manner, but can also be formed at three or more locations (not shown).

(5) This architectural hardware 65 is used as a so-called seated bolt or single-sided bolt. For example, the pillar is arranged so as to penetrate in the horizontal direction, and the disk 1 is positioned on one surface of the pillar to display the other of the pillar. It is used when the screw thread portion 62 of the bolt shaft 61 is exposed on the surface to fix a beam receiving metal fitting or the like (not shown).

1 disk (base)
2 One side of the disk 2a Outer circumference of one side 3 Outer surface of the other side 3a Outer side of the other side 4 Outer surface of the disk 5 Jikushin of the disk 7 Nut shaft 8 Screw thread part (hollow part) of the nut shaft
11 Inner circumference thick part 12 Outer peripheral edge of inner circumference thick part 13 Outer peripheral flat surface of inner circumference thick part 14 Tapered surface of inner circumference thick part 16 Auxiliary cutting blade 18 Rotation direction of disk 19 Radial direction of disk 21 Hexarobula Hole (locking part for rotary tools)
25, 25a Press type 22 Maximum outer diameter line of hexalobular hole 30 Wedge-shaped recess 31 Outer peripheral edge of wedge-shaped recess 32 Front edge in rotation direction of wedge-shaped recess 33 Rear edge in rotation direction of wedge-shaped recess 40 Wedge-shaped Convex 41 Outer peripheral edge of wedge-shaped convex 42 Front edge (blade edge) of wedge-shaped convex in the direction of rotation
43 Rear edge of wedge-shaped convex part in the direction of rotation 50 Building hardware 51 Concrete foundation 53 Anchor bolt 55 Base (wooden member)
56 Top surface of the base 57 Through hole 57a of the base Opening edge of the through hole (upper surface of the base)
58 Rotating tool 59 Rotating tool bit 61 Bolt shaft 62 Bolt shaft screw thread 65 Building hardware

Claims (3)

A nut shaft or a bolt shaft is provided by aligning the shaft core on one surface of a disk-shaped base, and when joining a wooden member, the nut shaft or the bolt shaft is inserted into a through hole formed on the application surface of the wooden member. Moreover, it is a hardware used by abutting the one surface with the applicable surface of the wooden member, and is characterized in that it is configured as follows.
(1) A wedge-shaped recess was formed on the outer peripheral side on the other surface of the substrate.
(2) Corresponding to the wedge-shaped concave portion, a wedge-shaped convex portion protruding on one side in contact with the wooden member was formed.
(3) A tapered surface was formed between the base end of the nut shaft or the bolt shaft and one surface of the disk.
(4) When the nut shaft or the bolt shaft is inserted into the through hole of the wooden member to be applied and one surface of the disk is brought into contact with the application surface of the wooden member, the opening edge of the through hole. The tapered surface and the wedge-shaped convex portion were formed so that the wedge-shaped convex portion abuts on the applicable surface of the wooden member before the tapered surface or one surface of the disk abuts on the wooden member. Application of the wooden member when joining a wooden member having a nut shaft with a shaft core aligned on one side of a disk-shaped base and a locking portion for a rotary tool on the shaft core on the other side of the base. A hardware formed on a surface, in which the nut shaft is inserted into a through hole, and the one surface is used in contact with an applicable surface of the wooden member, and is characterized in that it is configured as follows. Hardware.
(1) A wedge-shaped concave portion is formed on the outer peripheral side on the other surface of the base, and a wedge-shaped convex portion is formed on one surface of the base that abuts on the wooden member so as to correspond to the wedge-shaped concave portion.
(2) The wedge-shaped convex portion forms a substantially right-angled surface substantially perpendicular to the one surface on the front side in the rotation direction and a slope toward the one surface on the rear side in the rotation direction in the circumferential direction along the outer circumference. ..
(3) A tapered surface was formed between the base end of the nut shaft and one surface of the disk.
(4) When the nut shaft is inserted into the through hole of the wooden member to be applied and one surface of the disk is brought into contact with the application surface of the wooden member, the tapered surface is brought into the opening edge of the through hole. Alternatively, the tapered surface and the wedge-shaped convex portion are formed so that the wedge-shaped convex portion abuts on the applicable surface of the wooden member before one surface of the disk abuts. The building hardware according to claim 1 or 2 , formed as follows.
(1) An inner peripheral thick portion was formed between the nut shaft and the inner peripheral side of one surface of the disk, and a tapered surface was formed on the outer peripheral side of the inner peripheral thick portion.
(2) The maximum outer diameter line of the locking portion for the rotary tool on the other surface was positioned inside the inner circumference of the inner peripheral thick portion.
(3) A radial auxiliary cutting blade was provided so as to project from the inner peripheral thick portion or the tapered surface.

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