JP2003042125A - Nut for connecting lumber and lumber connecting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect and integrate a plurality of lumbers by single work from one side of a bolt. SOLUTION: A nut for connecting lumbers, in which an outer peripheral portion of a pedestal portion is further projected from an outer periphery of a nut body by integrally providing the plate-shaped pedestal portion at a base end of the cylindrical nut body internally avenging a female screen, and the base end of the nut body is opened by means of a hole formed in the pedestal portion, is provided therein. When the nut for connecting lumbers is fixed at one end of the through hole drilled in a connecting portion of a lumber, the lumbers are fastened by single work at one side of the bolt by inserting the bolt from other end side of the through hole and turning round a bolt head and cap nut. Further, as the base end of the nut body is opened, no rubbish such as wood chips is left inside the nut body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood connecting nut and a wood connecting tool for connecting and integrating a plurality of woods.

[0002]

2. Description of the Related Art Conventionally, the most general method for connecting and integrating timber in the field of construction and civil engineering is to form a through hole in the connecting portion of the wood and insert a bolt into the through hole. It is tightened with normal nuts.

[0003]

In the conventional method of tightening with a bolt and a normal nut, while the nut at one end is rotated and tightened, the bolt head or the nut at the other end is held so that the bolt does not rotate. There must be. Therefore, it is necessary to tighten or hold the bolts at both ends. However, depending on the working environment, there may be no clearance for one end of the bolt to allow the hand to be tightened, and the nut tightening work may not be possible. An object of the present invention is to develop a wood connecting nut and a wood connecting tool that can connect and integrate a plurality of woods only by working from one side of a bolt.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plate-shaped pedestal portion is integrally provided at the base end of a cylindrical nut body having an internal thread formed therein, and the outer peripheral portion of the pedestal portion is the outer periphery of the nut body. The nut for connecting wood is characterized in that the base end is opened by a hole formed in the pedestal portion while protruding further outward.

If the wood connecting nut of the present invention is fixed to one end of the through hole formed in the connecting portion of the wood, the bolt is inserted from the other end side of the through hole and the bolt head or the cap nut is rotated. By doing so, the bolt can be tightened by work on only one side. Also, since the base end is open,
Wood chips and other debris will not collect in the nut body.

If a nail hole is provided in the outer peripheral portion of the pedestal portion, the wood connecting nut of the present invention can be easily fixed to the wood of the connecting portion by a nail or a screw.

If the leading end of the nut body is provided with an introduction portion whose diameter increases toward the tip, the bolt can be easily inserted into the wood connecting nut of the present invention.

The present invention also provides a wood connecting tool comprising the above-mentioned wood connecting nut of the present invention, and a bolt and a cap nut. By combining a long bolt having no head and a cap nut screwed to one end thereof, thick wood can be easily connected and integrated. Instead of the combination of the bolt and the cap nut, a normal bolt with a head can be used.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings related to the embodiments. 1 is a plan view of a wood connecting nut 1 of the embodiment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is an explanatory view of a wood connecting tool of the embodiment including the nut 1.

The wood connecting nut 1 has a female screw 2a inside.
Cylindrical nut body 2 (so-called high nut)
A square plate-shaped pedestal portion 3 is integrally provided by welding at the base end of the. The outer peripheral portion of the pedestal portion 3 projects outside the outer periphery of the nut body 2. The shape of the pedestal is not limited to a square, but various shapes such as a circle and a polygon can be considered. Also,
The outer circumference of the pedestal part 3 does not necessarily extend over the entire circumference of the nut body 2
It does not need to project outward from the outer circumference of. As shown in FIG. 2, the nut 1 is also open on the base end side by the hole 6 formed in the pedestal portion 3. Two nail holes 5 are provided on the outer peripheral portion of the pedestal portion 3. At the tip of the nut body 2,
A tapered introduction portion 4 having a diameter that increases toward the tip is provided.

FIG. 3 shows three pieces of wood 10, 11,
This is an example in which 12 is connected and integrated by a wood connecting tool composed of a wood connecting nut 1, a bolt 7 and a cap nut 8. Through holes 13 are bored in the woods 10, 11 and 12,
A wood connecting nut 1 is driven into one end of the wood, and is fixed to the wood 12 with a nail 9 from a nail hole 5. The bolt 7 is a long bolt having no head, and the head is formed by screwing a cap nut 8 onto it. When the bolt 7 is inserted into the through hole 13 from the wood 10 side and the cap nut 8 is rotated and screwed and tightened to the wood connecting nut 1, the wood 10,
11 and 12 are connected and integrated.

FIG. 4 shows three timbers 10, 11,
It is an example in which 12 is connected and integrated by a wood connecting tool including a wood connecting nut 1 and a bolt 14. The bolt 14 is a normal bolt having a head portion 15, and the head portion 15 is made of wood 10.
It is stored in the countersink 17 provided at. When such a spot is dug, the head of the bolt is hidden in the wood so that the appearance is excellent, dust is not caught, and there is an advantage that the wood is placed on the wood without disturbing the user.

[0013]

EFFECTS OF THE INVENTION The wood connecting nut and the wood connecting tool of the present invention can connect and integrate a plurality of woods only by the work from one side, and therefore there is no restriction even if there is no space on one side for hand access. Can be connected. Further, since the base end of the wood connecting nut is open, dust such as wood chips does not collect in the nut body.

[Brief description of drawings]

FIG. 1 is a plan view of a wood connecting nut 1 according to an embodiment.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an explanatory view of a wood connector according to an embodiment including the wood connecting nut 1.

FIG. 4 is an explanatory view of a wood connector according to an embodiment including the wood connecting nut 1.

[Explanation of symbols]

1 Wood connecting nut 2 Nut body 3 pedestal 4 Introduction 5 nail holes 6 holes 7 volts 8 cap nuts 9 nails 10 wood 11 wood 12 wood 13 through holes 14 Volts 15 heads 16 washers 17 Zagori

Claims (5)

[Claims] 1. A plate-shaped pedestal portion (3) is integrally provided at the base end of a tubular nut body (2) having an internal thread formed therein, and the outer peripheral portion of the pedestal portion (3) is provided on the nut body (3). A nut for connecting wood, characterized in that it is projected outward from the outer periphery of 2) and the base end is opened by a hole (6) formed in the pedestal part (3). 2. The nut for connecting wood according to claim 1, wherein a nail hole (5) is provided in an outer peripheral portion of the pedestal portion (3). 3. The nut for connecting wood according to claim 1 or 2, characterized in that an introduction portion (4) having a diameter increasing toward the tip is provided at the tip of the nut body (2). 4. A wood connector comprising the nut according to claim 1, 2 or 3 and a bolt (7) and a cap nut (8). 5. A wood connector comprising a nut according to claim 1, 2 or 3 and a head bolt (14).