JP2020122316A - Deck material fixing metal fitting - Google Patents

Abstract

To provide a deck material fixing metal fitting capable of forming a gap having a width of 5 mm between the deck materials preferably even when a wooden synthetic deck material is used, and a method of producing the same.SOLUTION: A deck material fixing metal fitting 1 according to the present invention comprises a bottom part 2, a first vertical part 3a and a second vertical part 3b that extend vertically from right and left side edges of the bottom part respectively, and a first engagement part 4a and a second engagement part 4b that extend right and left and outward from upper ends of the first vertical part and the second vertical part respectively. A cut-out part is formed continuously to the first vertical part 3a and the second vertical part 3b from the center position of the bottom part 2, and bulging parts 9a, 9b for sandwiching a machine screw are formed above the cut-out part at the first vertical part 3a and the second vertical part 3b respectively.SELECTED DRAWING: Figure 1

Description

The present invention, when building a deck structure by arranging deck materials to build a floor surface such as a terrace or balcony of a building, a fixing bracket for deck materials used for fixing the deck materials to joist materials and the like. And a manufacturing method thereof.

In recent years, as a deck material for constructing a deck structure, a recycled wood synthetic deck material, which is formed by mixing wood powder made of construction waste material and a thermoplastic resin, has been widely used. As a device for fixing such a regenerated wooden synthetic deck material to a joist material or the like, for example, a deck material fixing device as described in Patent Document 1 (Japanese Patent Laid-Open No. 2008-31757) is known. Has been. The deck material fixture shown in Patent Document 1 is a plastic molded product, but a metal deck material fixture may be required from the viewpoint of strength and durability depending on the construction site.

Although various methods are conceivable for forming the deck material fixture with a metal material, the method of bending and forming a metal plate such as a stainless plate is considered to be the most practical in view of the manufacturing cost.

JP, 2008-031757, A JP, 2009-024410, A JP, 2006-193974, A

By the way, in a deck structure installed outdoors, it is necessary to form a gap between adjacent deck materials in consideration of air permeability, water permeability, and the like. If the gap between the deck materials is too small, it will not be possible to obtain sufficient breathability and water permeability, and if it is too large, a part of the pedestrian's shoes (heels, etc.) will be caught and foreign matter will easily enter the underfloor space. Because of the problem of falling, the width is often set to about 5 mm.

However, when a deck structure is constructed using the above-mentioned recycled wood synthetic deck material and a deck material fixture formed by bending a metal plate, a gap of 5 mm width is formed between the deck materials. Can be difficult.

The present invention is intended to solve such a problem of the prior art, and even when using a wood-synthesized deck material, a deck capable of suitably forming a gap of 5 mm width between the deck materials. An object is to provide a material fixing metal fitting and a manufacturing method thereof.

The deck material fixing bracket according to the present invention includes a bottom portion, a first vertical portion that extends in the vertical direction from the left and right side edges of the bottom portion, and a second vertical portion, and extends in the lateral left and right directions from the upper ends thereof. A first locking portion and a second locking portion, the notch is formed so as to be continuous from the center position of the bottom to the first vertical portion and the second vertical portion, the first vertical portion, Further, a bulging portion for sandwiching the screw is formed above the cutout portion in the second vertical portion.

It should be noted that the first locking portion is formed with a downward claw, and at the outermost edge, a downward flap whose front end side is bent downward is formed. A pressing portion located below the base end portion may be formed at the edge, and a taper portion may be formed at the outermost end edge of the pressing portion, with the tip end inclined obliquely upward and outward. It is preferable that the width of the outer surface of each of the first vertical portion and the second vertical portion is set to 4.5 to 4.9 mm.

Further, the method for manufacturing a deck material fixing bracket according to the present invention comprises bending a stainless steel plate having a thickness of 0.5±0.1 mm to form a bottom portion, a first vertical portion, a second vertical portion, a first locking portion, and a first locking portion. After forming the two locking portions and the bulging portion, quenching treatment is performed to increase the rigidity.

Further, the deck material unit according to the present invention comprises the above-mentioned deck material fixing metal fittings, screws, and recycled wood synthetic deck material, and the screws have a diameter of the outermost peripheral portion of the screw thread of 4.0 to 4. The recycled wood synthetic deck material is characterized by having the same protruding dimension and having a lower jaw portion and an upper jaw portion having a thickness dimension of 6 mm or more on both side edges, respectively.

The deck material fixing bracket according to the present invention is arranged between the lower jaws of two deck materials when constructing a deck structure using a recycled wood synthetic deck material, so that a clearance of about 5 mm is formed on the deck surface. It can be formed, and the deck material can be firmly fixed to the joist material or the like by a simple operation.

In addition, when the deck material fixing bracket is manufactured by bending the metal plate that is the raw material by pressing or the like and then quenching it, the rigidity (elastic coefficient) increases, and the deck material can be firmly fixed. it can.

FIG. 1 is a front view of a deck material fixing bracket 1 according to the present invention. FIG. 2 is a perspective view of the deck material fixing bracket 1 of FIG. FIG. 3 is a partial perspective view showing only the right half portion of the deck material fixing bracket 1 of FIG. FIG. 4 is an explanatory diagram of a method of using the deck material fixing bracket 1 of FIG. 1 (method of fixing the deck material). FIG. 5 is an illustration of a method of using the deck material fixing bracket 1 of FIG. 1 (fixing method of deck material). FIG. 6 is an explanatory diagram of a method of using the deck material fixing bracket 1 of FIG. 1 (method of fixing the deck material).

INDUSTRIAL APPLICABILITY The present invention can be carried out not only as a "deck material fixing bracket" but also as a manufacturing method thereof, and as a "deck material unit" by combining a deck material fixing bracket and recycled wood synthetic deck material. Can also be implemented.

Hereinafter, a mode for carrying out the "deck material fixing bracket" according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view of a deck material fixing bracket 1 according to the present invention, FIG. 2 is a perspective view thereof, and FIG. 3 is a partial perspective view showing only a right half portion thereof. As shown in the drawing, the deck material fixing bracket 1 includes a horizontal bottom portion 2, a first vertical portion 3a and a second vertical portion 3b extending vertically from the left and right side edges thereof, respectively. It has a first locking portion 4a and a second locking portion 4b extending from the upper end to the left and right outer directions, respectively.

Further, two downward claws 5 are formed on the first locking portion 4a, and a downward flap 6 whose front end side is bent downward is formed at the outermost edge. On the other hand, the outer end edge of the second locking portion 4b is formed with a pressing portion 7 located below the base end portion (connection portion with the second vertical portion 3b). A taper portion 7a is formed at the outermost edge of the pressing portion 7 so that the tip side is inclined outward and obliquely upward.

Further, a notch 8 (see FIGS. 2 and 3) for allowing a screw (not shown) to pass is formed in the center of the bottom portion 2. The notch portion 8 is formed so as to be continuous from the center position of the bottom portion 2 to a predetermined height position (a height position of about 3/4) of the first vertical portion 3a and the second vertical portion 3b. There is. Further, bulged portions 9a and 9b for holding screws (not shown) are formed above the cutout portions 8 in the first vertical portion 3a and the second vertical portion 3b, respectively. The inner surface of each of the bulging portions 9a and 9b is an arcuate concave surface having a curvature (slightly larger than the diameter of the screw thread of the screw) corresponding to the diameter of the outermost peripheral portion of the screw thread of the screw used. ing.

The deck material fixing bracket 1 is formed by bending a metal plate by pressing or the like. In this embodiment, a highly corrosion-resistant ferritic stainless steel plate (SUS443J1) having a thickness of 0.5 mm (±0.1 mm) is used as a raw material. A stainless steel plate having a thickness of 0.5 mm is easily elastically deformed, and it is difficult to obtain sufficient rigidity (rigidity necessary for fixing the deck material) as it is, but in the present embodiment, the stainless steel plate is used. Bending is performed to form the shape shown in Fig. 1 and Fig. 2, and then the hardening (condition: about 420°C for about 25 minutes) is performed, so the rigidity (elastic coefficient) increases. The deck material can be firmly fixed.

Here, the method of fixing the deck material (recycled wood-based synthetic deck material) using the deck material fixing bracket 1 according to the present invention will be described. First, as shown in FIG. The first locking portion 4a of the deck material fixing bracket 1 is placed on the lower jaw portion 12 formed on the side edge of the deck material 11A arranged earlier, and the first vertical portion 3a of the lower jaw portion 12 is Keep in contact with the tip. Next, the screw 14 is passed between the left and right bulging portions 9a and 9b to be sandwiched, and the lower end 14a of the screw 14 is passed downward from the cutout portion 8 (see FIG. 2) of the bottom portion 2. Incidentally, the deck material fixing metal fitting 1 in which the screw 14 is previously sandwiched between the bulging portions 9a and 9b may be placed on the lower jaw portion 12 of the deck material 11A.

From this state, the screw 14 is driven into the joist 10 and temporarily fixed. In addition, at the time of temporary fastening, as shown in FIG. 4B, the driving of the screw 14 is stopped at a position where the bottom portion 2 of the deck material fixing bracket 1 is about 2 mm above the upper surface of the joist material 10. When the screw 14 is tightened in the deck material fixing bracket 1 of the present embodiment, the head of the screw 14 contacts the first locking portion 4a and the second locking portion 4b as shown in FIG. 4(2). It comes into contact with and presses down from above, so that even if upward force is applied to the first locking portion 4a and the second locking portion 4b, their upward displacement can be suitably suppressed.

Then, as shown in FIG. 5, the lower jaw 12 of the other deck material 11B is made to enter the space below the second locking portion 4b of the deck material fixing bracket 1 (the position shown by the broken line in FIG. 5). , Abut on the second vertical portion 3b of the deck material fixing bracket 1. At this time, even if the pressing portion 7 of the deck material fixing bracket 1 is located at a position where it interferes with the entry of the lower jaw portion 12, the taper portion 7a is formed on the outer edge of the second locking portion 4b. The lower jaw 12 can be smoothly entered.

Finally, a screwdriver is inserted through the gap between the upper jaws 13 of the two deck materials 11A and 11B, and the screws 14 are firmly tightened until the bottom 2 of the deck material fixing bracket 1 contacts the joist 10. Then, as shown in FIG. 6, the lower jaw portion 12 of the deck materials 11A and 11B is strongly pressed to the joist material 10 side by the first locking portion 4a and the second locking portion 4b, and the deck materials 11A and 11B. Can be firmly fixed to the joist 10. Further, the lower jaw 12 of the deck material 11A has a shape in which the claws 5 of the deck material fixing bracket 1 bite into the lower jaw portion 12 as shown in the figure, and it is possible to suitably prevent the deck material 11A from moving in the longitudinal direction. it can.

The deck material fixing bracket 1 shown in FIG. 1 has a width dimension w1 of the outer surface of the first vertical portion 3a and the second vertical portion 3b (a dimension from the outer surface of the first vertical portion 3a to the outer surface of the second vertical portion 3b). ) Is set to 4.7 mm (preferably 4.5 to 4.9 mm), so when placed between the lower jaws 12 of the two deck materials 11A and 11B as shown in FIG. When the deck structure is constructed using the deck materials 11A and 11B in which the lower jaw 12 and the upper jaw 13 have the same projecting dimensions, the deck structure (deck material 11A, 11B upper jaw 13 A gap of about 5 mm can be formed (between).

Further, when the recycled wood synthetic deck material is used as the deck materials 11A and 11B, the thickness dimension of the lower jaw portion 12 fixed by the deck material fixing bracket 1 is 6 mm (more preferably 8 mm) or more from the viewpoint of strength. Where it should be set, in the deck material fixing bracket 1, the first locking portion 4a and the second locking portion 4b can be pressed so that the bottom 2 is in contact with the joist material 10. The one vertical portion 3a and the second vertical portion 3b need to have a height dimension corresponding to the thickness dimension of the lower jaw portion 12.

Further, as the screw 14 for fixing the deck material fixing bracket 1, in consideration of the strength of the deck structure, at least the diameter (the diameter of the outermost peripheral portion of the screw thread) is 4 mm or more (4.0 to 4.7 mm). 1 is used, the deck material fixing bracket 1 in FIG. 1 uses a stainless steel plate having a thickness of 0.5 mm as a raw material, so that the first vertical portion 3a and the second vertical portion 3b are The dimension w2 (the dimension from the inner side surface of the first vertical portion 3a to the inner side surface of the second vertical portion 3b) is 3.7 mm, and the screw 14 insertion position (bottom portion) in the deck material fixing bracket 1 is set. 2, the first vertical portion 3a, and the second vertical portion 3b) is formed with a notch 8 and a bulging portion having an arcuate concave surface having a curvature corresponding to the diameter of the screw 14 above the notch 8. Since 9a and 9b are respectively formed, the screw 14 having a diameter of 4.0 to 4.7 mm can be inserted and pinched without any problem.

Further, as a deck material to be fixed by using the deck material fixing bracket 1, a locking projection 12a (see FIG. 6) is formed in the lower jaw 12 so as to face upward (project above the back side portion thereof). In this case, it is possible to suitably prevent the deck material 11B from falling off by engaging the pressing portion 7 with the locking projection 12a, and a deck structure having sufficient structural strength. Can be built.

1: Deck material fixing bracket,
2: bottom,
3a: first vertical portion,
3b: second vertical part,
4a: first locking portion,
4b: second locking portion,
5: nails,
6: downward flap,
7: pressing part,
7a: tapered portion,
8: Notch,
9a, 9b: bulge,
10: joists,
11A, 11B: deck material,
12: Lower jaw,
12a: locking ridge,
13: Upper jaw,
14: Screw,
14a: bottom edge,

Claims (5)

A bottom portion, a first vertical portion extending in the vertical direction from each of the left and right side edges thereof, a second vertical portion, and a first locking portion extending in the left and right outward directions from the upper ends thereof, and a second Has a locking part,
A cutout is formed so as to be continuous from the center position of the bottom to the first vertical part and the second vertical part,
A deck material fixing metal fitting, characterized in that bulging portions for sandwiching screws are respectively formed above the notches in the first vertical portion and the second vertical portion. In the first locking portion, a downward claw is formed, and at the outermost edge, a downward flap whose front end side is bent downward is formed,
A pressing portion located below the base end portion is formed on the outer end edge of the second locking portion, and the outermost end edge of the pressing portion has a taper in which the tip end is inclined outward and obliquely upward. The deck material fixing metal fitting according to claim 1, wherein a portion is formed. The width|variety dimension of the outer surface of a 1st vertical part and a 2nd vertical part is set to 4.5-4.9 mm, The deck material fixing metal fittings of Claim 1 or Claim 2 characterized by the above-mentioned. A method for manufacturing the deck material fixing bracket according to any one of claims 1 to 3,
After bending a stainless steel plate having a thickness of 0.5±0.1 mm to form a bottom portion, a first vertical portion, a second vertical portion, a first locking portion, a second locking portion, and a bulge portion, A method for manufacturing a deck material fixing bracket, characterized by increasing the rigidity by performing a quenching treatment. A deck material unit comprising the deck material fixing bracket according to any one of claims 1 to 3, a screw, and a recycled wood synthetic deck material,
The screw has a diameter of the outermost periphery of the screw thread of 4.0 to 4.7 mm,
The regenerated wood synthetic deck material is a deck material unit characterized by having the same protruding dimension and having a lower jaw portion and an upper jaw portion having a thickness dimension of 6 mm or more on both side edges, respectively.

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