JP2001116034A - Spring washer of wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To refasten a bolt even if wood withers and becomes lean when the bolt hides inside in performing finishing carpentry after fastening the bolt at ridge raising time in a wooden building of a conventional construction method. SOLUTION: This spring washer is used to solve withering of wood, but loosening of a bolt when wood withers cannot be prevented by a conventional spring washer. The spring washer can prevent loosening of the bolt since resiliency is high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring washer used for wooden construction.

[0002]

2. Description of the Related Art Conventional spring washers are used for steel frames and the like, and these washers have also been used for wooden structures.

[0003]

In a conventional wooden house,
It is a framing method and the use of bolts is required,
When tightening at the time of the upper wing, the wood becomes thinner over the years, so the bolt is loosened, so a spring washer is used, but with the conventional spring washer, it was not possible to cope with the thinning of the wood. Most bolts have been loosened when dismantling a wooden house.

[0004]

Means for Solving the Problems To solve the problems,
(B) As before, the timber will dry and then go up. (B)
Even if the upper building is dry, re-tighten the bolts before making. (C) Use a bolt washer and a spring washer that can cover the range of thin wood.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. In FIG. 1, a flat washer (5) is bonded to a double spiral spring washer (2) having a bolt hole (1) at the center. The flat washer is glued to avoid using the washer (2) alone. Fig. 2 is a side view of Fig. 1. Insert the dotted bolt (8) into the bolt hole (1) and use it. In FIG. 3, a steel plate is formed by punching a steel plate in a curved shape with a human spring washer (4) having a bolt hole (3) at the center, as shown in FIG. 4, between the washer (4) and the flat washer (6). Packing made of elastic synthetic resin (7)
And glue them together and tighten them with bolts (8).
Due to the above structure, it has more resilience than the conventional spring washer and prevents the bolt (8) from loosening.

[0006]

In wooden construction, bolting of the main part is obligatory, but iron and wood are not compatible, and even if the wood becomes thinner, it cannot be retightened later. If the spring washer of the present invention is used, the repulsive force is larger than that of the conventional one, so it is possible to eliminate the loosening of the bolt.

[Brief description of the drawings]

FIG. 1 is a plan view of a double spiral spring washer.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a plan view of a human spring washer.

FIG. 4 is a sectional view taken along line A-A ′ of FIG. 3;

[Explanation of symbols]

 1: 3 Bolt hole 2 Double spiral spring washer 4 Human spring washer 5: 6 Flat washer 7 Packing 8 Bolt

Claims (3)

[Claims] 1. A spring washer for a wooden building, wherein a steel plate is stamped and formed like a double spiral spring washer (2) having a bolt hole (1) at the center. 2. A spring washer for a wooden building according to claim 1, wherein said spring washer is provided with a bolt hole (3) at a center thereof, and is formed by punching a steel plate into a curved shape. 3. A spring for a wooden building according to claim 2, wherein a packing (7) made of an elastic synthetic resin or the like is bonded between the curved one-piece spring washer (4) and the flat washer (6). Washers.