JP3902977B2 - Withdrawal hardware - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an attracting hardware often used in a wooden frame house.
[0002]
[Prior art]
A structure in which the end of the other long material is brought into contact with one long material and assembled is often found in a house with a wooden frame structure.
In a house with a wooden frame structure, in addition to the foundation and the foundation, the foundation and the pillar, the adhesion between each member, such as the connection between the pillar and the beam or the brace, are important. It has been.
Of these, the attracting hardware 1 as shown in FIG. 5 has been used for binding the pillar and the horizontal member such as the base and the pillar or the pillar and the beam. Reference numeral 2 is a fabric foundation, reference numeral 3 is a base, reference numeral 4 is an anchor bolt, and reference numeral 5 is a pillar.
[0003]
FIG. 5 is a corner of a wooden framed house. A base 3 is fixed to a cloth foundation 2 with anchor bolts 4 each having a lower part fixed to the cloth foundation 2 in advance, and pillars 5 are erected at the corners. is there. The attracting hardware 1 is fixed to the front surface of the pillar 5 with the mounting bolt 6, the attracting bolt 7 is engaged with the nut 8, the pillar 5 and the base 3 are attracted, and are fastened with a force of about 10 to 80 kN. Yes.
The attracting metal 1 is made of a strong and thick steel plate, and is composed of parts of a fixed plate portion 9 and a through-engaging portion 10, which are separately manufactured and welded together. Further, the drawing bolt 7 has a lower part fixed to the cloth foundation 2 in advance and an upper part penetrating the base 3.
[0004]
The attracting hardware 1 is widely used as a hole down, but has the following drawbacks.
Since two parts of the fixed plate portion 9 and the through-engaging portion 10 are made and manufactured by welding them, it takes time and labor, and the cost increases.
Since the fixing plate portion 9 is flat, resistance to deformation in a direction perpendicular to the surface is small, and when a strong pulling force acts on the engaging portion, the fixing plate portion 9 swells and deforms to be peeled off from the surface of the column 5. Tend to.
Since the mounting bolts 6 used for fixing to the pillars or the like pass through the pillars 5 and are arranged in a single line along the axis of the pillars, there is a risk of breaking the pillars 5.
[0005]
[Problems to be solved by the invention]
The present invention does not require a welding process, is easy to manufacture, has a fixed plate portion that is robust against bending, and does not damage a column or a horizontal member for mounting. Offering is an issue.
[0006]
[Means for Solving the Problems]
A flat die-cut plate is made from a steel plate with a press or the like, and this is bent into a drawing metal. The die-cutting plate has a shape in which the drawing metal is flatly developed, and has a substantially H shape in which the left and right attachment pieces are bridged by the central engaging piece. The attachment piece is provided with an inner rib and an outer fixing plate portion along the longitudinal direction. A fixing plate for nails and screws is provided in the fixing plate portion.
[0007]
The central engaging portion piece is bent so that the cross section is an oval, thereby forming a cylindrical penetrating engaging portion. Along with this, the attachment pieces on both sides rise in parallel. The mounting pieces raised in parallel are brought into contact with each other . Next, the fixing plate portion of the attachment piece is bent outward along the boundary line with the rib to form a fixing plate portion parallel to the attachment surface.
As a result, the fixed plate portion facing and parallel to the left and right, the left and right ribs rising from the inner side (opposite side), and the cylindrical cross-section oval formed integrally in the middle of the longitudinal direction of the ribs An attracting metal object having a through engagement portion can be obtained.
[0008]
During this time, the only work is punching and bending, and there is no welding work and the manufacturing is simple. The completed attracting metal has two ribs vertically passing through the inside of the fixed plate part, that is, the center of the attracting metal in the width direction (left and right direction). The resistance to the force in the direction of peeling is large, resulting in a sturdy attracting metal. Furthermore, since the attracting hardware is fixed to the pillar with a distributed fixture such as a nail or a screw, there is little risk of breaking the pillar. In addition, although the case where the attracting hardware is fixed to the column has been described, the same applies to the case where the attracting hardware is fixed to the beam surface.
[0009]
Contact Ku provided reinforcing beads over both parts pieces in the lateral direction to the connecting portion of the engaging piece and the mounting piece. In many cases, the reinforcing beads are formed by denting the surface of the punched plate into a groove shape by pressing. The reinforcing beads are located on both the left and right side surfaces of the neck portion extending from the penetrating engaging portion to the rib when the engaging piece is formed into a cylindrical shape.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an attracting metal 11 according to the present invention, in which (a) is in use and (b) is an enlarged view of a part thereof. Reference numeral 2 is a cloth foundation, 3 is a base, 5 is a column, 7 is a drawing bolt, and the lower part is fixed to the cloth foundation 2, and the upper part is passed through the drawing metal 11 and screwed into that part. 8 is engaged with the attracting metal 11. This structure is the same as the conventional example.
The attracting hardware 11 includes left and right fixing plate portions 12 a and 12 b, inner ribs 13 a and 13 b, and a through engagement portion 14. The penetrating engagement portion 14 has a cylindrical shape with an oval cross section, and has reinforcing beads 15 horizontally on both the left and right sides of the neck portion. Reference numeral 16 denotes a screw fixing hole provided in the fixing plate portions 12a and 12b.
[0011]
FIG. 3 shows one die-cutting plate 17, which is obtained by stamping from the steel plate 18 as shown in FIG. At the same time when the mold is taken, a concave groove 19 is formed which becomes the fixture hole 16 and the reinforcing bead 15.
The die-cutting plate 17 is flat and substantially H-shaped, and includes left and right attachment pieces 20a and 20b and a central engagement piece 21 connecting them. The left and right attachment pieces 20a and 20b are respectively provided with the ribs 13a and 13b on the inner side (opposite sides) and the fixed plate portions 12a and 12b on the outer side thereof along the longitudinal direction of the attachment pieces 20a and 20b. It is set. The corners where the engaging piece 21 is connected to the attachment pieces 20a, 20b are preferably connected by a curve having a large diameter. If the corner is formed sharply, when a pulling force is applied, stress may concentrate on the corner and a crack may be generated from this point.
In FIG. 3, the boundaries between the ribs 13a and 13b and the fixed plate portions 12a and 12b are indicated by broken lines. In addition, the concave groove 19 serving as the reinforcing bead 15 is long in the left-right direction in the portion of the engaging portion piece 21 at the left and right portions extending from the engaging portion piece 21 to the ribs 13a, 13b.
[0012]
The die-cutting plate 17 bends the engagement piece 21 at the center into a cylindrical shape, raises the attachment pieces 20a and 20b on both sides in parallel, and brings the opposing surfaces into contact with each other. Next, the fixing plate portions 12a and 12b of the left and right attachment pieces 20a and 20b are bent outward from the boundary with the ribs 13a and 13b and molded. Thereby, the die-cutting plate 17 is disposed in the middle of the fixing plate portions 12a and 12b that face each other and the left and right ribs 13a and 13b that rise from the inner side (opposing side) and the longitudinal directions of these ribs. It becomes the attracting | attaching metal object 11 provided with the penetration engagement part 14 of the cylindrical shape and oval cross section formed integrally. The left and right fixing plate portions 12a and 12b are on the same plane and are parallel to a mounting surface such as a column. On the left and right sides of the penetrating engagement portion 14, the reinforcing beads 15 formed by the concave grooves 19 are positioned horizontally at the neck portions connected to the ribs 13 a and 13 b. Further, the through-hole of the through-engaging portion 14 is a long hole having a long cross section in the front-rear direction, the short diameter (horizontal width dimension) is substantially equal to the diameter of the attracting bolt 7, and the long diameter (front-rear dimension) is the diameter of the attracting bolt 7. About 1.5 times greater than
[0013]
In the embodiment, the dimensions of each part are as follows: the thickness of the steel plate = 4.5 mm, the length of the entire drawing hardware (vertical dimension) = 240 mm, the left / right width = 40 mm, the width of the fixed plate = 15.5 mm, the height of the rib Length (front-rear direction dimension from the bottom surface) = 14.5 mm, length of the engaging portion = 55 mm, protrusion amount of the engaging portion (front-rear direction dimension from the bottom surface) = 50.5 mm, minor diameter of the long hole = 17 mm, The long diameter of the long hole = 16.5 mm, the protruding amount of the bead = about 3 mm, and the pulling strength of 10 to 80 kN can be exhibited by using the diameter of the pulling bolt = 16 mm.
[0014]
Although one embodiment has been described above, the ribs 13a and 13b may be formed so that the side close to the penetrating engagement portion 14 is high and the tip side is low. Reinforcing bead 15 but it may also be one that around the through-engagement portion 14 in which the tubular.
[0015]
【The invention's effect】
The product can be formed simply by bending the die-cutting plate, and the manufacturing cost is low.
Since each part is an integrated product, the strength is high.
Since the fixed plate portion is attached with a nail or a screw, the column or the like is rarely damaged.
It has ribs and reinforcing beads and is structurally strong.
Since the through-hole of the through-engaging portion is formed long in the front-rear direction, it can easily cope with the displacement of the drawing bolt, and a sufficient pulling-out strength can be obtained.
[Brief description of the drawings]
1A is a perspective view showing a state of use, and FIG. 1B is an enlarged view of a part thereof. FIG. 2 is a perspective view of a drawing metal. FIG. 3 is a plan view of a die cutting plate. [FIG. 5] Perspective view (conventional example)
[Explanation of symbols]
1 Withdrawal hardware (conventional)
2 Cloth foundation 3 Base 4 Anchor bolt 5 Pillar 6 Mounting bolt 7 Pulling bolt 8 Nut 9 Fixing plate part 10 Through-engaging part 11 Pulling metal (this invention)
12a, 12b Fixed plate part (present invention)
13a, 13b Rib 14 Through-engagement portion 15 Reinforcement bead 16 Fixing hole 17 Die-cutting plate 18 Steel plate 19 Recessed groove 20a, 20b Attachment piece 21 Engagement piece

Claims (1)

It is formed by bending a single die-cutting plate, and the die-cutting plate is flat and substantially H-shaped, with the left and right mounting pieces being bridged by a central engaging piece, The inner rib and the outer fixing plate portion are set along the longitudinal direction, the fixing plate portion has a fixing hole for a nail or a screw, and the central engaging piece is cross-sectioned. Is bent so as to form an oval cylindrical shape, and the through-engaging portion is formed , and the attachment pieces on both sides are raised in parallel and in contact with each other, and then the fixing plate portion of the attachment piece is Ri parallel fixing plate portion entirety in the mounting surface is bent outward respectively along the boundary line between the ribs, extending in the lateral direction contact portion over each both parts pieces between the engagement piece and left and right mounting pieces An attracting hardware characterized by forming a reinforcing bead .

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