JPS60205007A - Nail plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a nail plate mainly used for tightening joints in the construction of houses, etc., and in particular, by devising the shape and arrangement of the nail part. This is aimed at improving the properties and bonding strength.

(Prior Art) In house construction work, particularly house construction using frame wall construction methods, nail plates are sometimes used to join structural members together.

The nail plate is made to function as an assembly of joining nails by press-fitting each nail part near the joining part of structural wood or laminated timber phase 11:, and is made of stainless steel plate, A plurality of predetermined locations on a metal plate such as a steel plate are cut and raised by well-known shearing and bending processes using a press molding machine, and the cut and raised portions are configured to act as nail portions.

However, in conventional nail plates, sufficient consideration has not been given to the shape of each nail part (cut and raised part) and how they are arranged relative to each other. If the nail part is bent due to press-fit resistance and cannot perform its original function, or if a tensile force or the like is applied to the joint where the nail plate has been constructed, each nail part that has penetrated will easily come out. There was a risk that the joint would be destroyed or damaged.

Furthermore, with conventional nail plates, when each nail part is press-fitted into wood, the wall thickness of the tip part is severely pushed out in the direction of the fibers of the wood due to the so-called opening effect, so there is a drawback that splitting occurs at the press-fitting point. had.

Furthermore, since the effective cross-sectional area of the nail plate substrate differs depending on its position, stress is concentrated at the location where the cross-sectional defect is the largest, resulting in the problem that the substrate itself is destroyed.

(Object of the invention) In view of such conventional problems, the present invention has good workability,
The purpose is to provide a nail plate that is also excellent in terms of strength such as tensile strength.

(Structure of the Invention) Therefore, in order to achieve the second object, in the present invention, a plurality of predetermined locations of a metal plate are cut and raised by shearing and bending using a press molding machine, etc., and the cut and raised portions are made of wood or laminated wood. In a nail plate that functions as a joining nail by being press-fitted into the vicinity of the joint between materials, each of the raised portions is composed of a pair of symmetrical nail portions that are cut and raised in opposite directions, and each nail portion is The distal end portion is formed narrower than the proximal end portion, and the raised portions are arranged in series in the same direction in a plurality of parallel rows, and are arranged in a staggered manner between the opposing rows. It is characterized by:

(Effects of the Invention) In the present invention having the above-mentioned configuration, each side raised portion is constructed with a pair of symmetrical nail portions, and the pair of nail portions are simultaneously cut and raised in opposite directions at the time of cutting and raising. The properties are extremely good. Moreover, since each nail part is twisted when being cut and raised, the nail parts are press-fitted in opposite directions slightly inclined from the vertical direction when being press-fitted into the wood. Therefore, there is no fear that the press-fitted nail part will be pulled out in any pulling direction, and various useful effects can be achieved, such as being able to maintain sufficient strength.

(Example) A preferred embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention, and numeral 1 in the figures indicates a nail plate according to this embodiment.

In the manufacturing process of the nail plate 1, as shown in FIG. 1, a plurality of cut and raised portions 3 are first formed at predetermined locations of the substrate 2 by well-known press working, which will be described later.
As shown in FIG. 2 and FIG. 3, which is a sectional view taken along the line A-A in the figure, each raised portion 3 is raised to a position perpendicular to the board 2, and each raised portion 3 is attached to a regular nail. It functions as a corresponding nail part.

Note that in this specification, arbitrary line segments parallel to the X direction in FIG.
The line segment parallel to the direction, that is, the front-rear direction in the figure, is referred to as line segment 42.

In this embodiment, each cut-and-raised portion 3 is formed so that its outline is approximately parallelogram-shaped, and as shown in FIG. A pair of nail parts 31 to 41 that take shape! At each cut-and-raised portion 3, upper and lower nail portions 31 in the figure are formed.
A pair of nail portions 31 can be formed at the same time by cutting and raising each of the nail portions 31 in opposite directions. Therefore,
The cut-and-raised lengths L) of the pair of nail parts 31 are naturally the same, and in the case of this embodiment, the cut-and-raised lengths of all the cut-and-raised parts 3 are also set to be the same.

Further, as shown in FIG. 4, each nail portion 31 is provided with a tapered portion 31c approximately in the middle between the base end 31a and the distal end 31b. 31b is formed narrower than the base end portion 31a by a predetermined dimension.

Further, as shown in FIG. 1, in any row G, they are arranged in series in the same direction at predetermined intervals. Therefore, in this embodiment, the intervals (W) between each row G are all set to be the same.

Also, each of the opposing and adjacent rows Gl, G2, G3...
・With respect to the arrangement relationship of each cut-and-raised part with respect to each other, each cut-and-raised part in a certain arbitrary row G is f! ! 3 and each cut-and-raised portion 3 in the row G on both sides of the row G are arranged in a staggered manner so as to be point symmetrical with respect to each other.

Regarding the arrangement in the column direction, the cut-and-raised portions 3 arranged in a staggered manner as described above are arranged opposite to each other in the column direction, so that the three points of each are all in the same column. For example, as shown in FIG.
and the interval intersection 2 between rows R2 and R3 are set to be the same. This relationship holds true for other columns as well.

In this embodiment, it is set to be installed so that the X direction (row direction) in FIG. The cross-sectional defect caused by each cut-and-raised portion 3 is such that each cut-and-raised portion 3 satisfies the arrangement conditions described above, and the cut-and-raised length (L) of each cut-and-raised portion 3 is set to be the same as the interval between each row 0 above. As a result, they are all configured to be the same at any position.

Next, we will discuss the effects of this embodiment.

First, considering the case where the nail plate 1 according to this embodiment is press-fitted into a joint of wood or the like, each nail part 31 in each cut-and-raised part 3 is slightly moved in the same direction as shown in FIG. Also, since the twist direction of each nail part 31 is opposite for each row, when press-fitting, each nail part in a certain arbitrary row and each nail part in the rows on both sides are slightly different from the vertical direction. Since they are press-fitted in opposite directions with inclinations, no matter which direction a tensile force is applied to the joint where the nail plate 1 is attached, the nail part 31 will be approximately half the size in the tensile direction. There is no risk that the nail portion 31 will be pulled out.

Furthermore, by setting the mutual arrangement of the cut-and-raised portions 3 to the conditions mentioned above, the cross-sectional defect in the cross section perpendicular to the Y direction, that is, the tensile direction, in other words, the effective cross-sectional area is completely reduced at any position. Since they are the same, there is no risk of local stress concentration occurring on the substrate 2 itself, and the yield strength of the substrate 2 itself can also be improved.

In this embodiment, each nail portion 31 has a tip portion 31b having a curved shape that curves outward so as to reduce press-fitting resistance during press-fitting.

Next, FIG. 5 shows a second embodiment of the present invention,
In this embodiment, the tip portion 31b of each nail portion 31 is formed to have a substantially rectangular shape when viewed from the side,
The edge 311b is configured to be flat.

In this embodiment, when the tip 31b is press-fitted into the wood, the tip 31b completely cuts the sai of the wood, so each nail part 31 pushes out the fiber direction of the wood and splits the wood at the press-fit location. It is possible to eliminate the drawback that this occurs.

FIG. 6 shows a third embodiment of the present invention. In this embodiment, a notch is made in the tip 31b of each nail part 31, and the tip 31b is divided into forked shapes by applying twist during molding. It is formed.

In this embodiment, when each nail portion 31 is press-fitted into the wood, the tip portion 31b is sufficiently fixed in the wood, so that the pull-out strength can be further improved.

Note that the nail portion 31 may be set in a shape such that the distal end portion 31b is narrower than the proximal end portion 31a, and is not limited to the shape of each of the above embodiments, without departing from the gist of the present invention. It goes without saying that various modifications and changes can be made within the scope.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, FIG. 1 is a plan view showing the arrangement of each cut-and-raised portion of the nail plate before cutting and raising, and FIG. 2 is a plan view of the nail plate after cutting and raising. A plan view of the plate, Figure 3 is a sectional view taken along the line A-A in Figure 2, and Figure 4 is a sectional view of the plate.
The figure is an explanatory view showing the details of the cut-and-raised part, FIG. 5 is a perspective view of the main part showing the second embodiment of the present invention, and FIG.
FIG. 2 is a perspective view of essential parts showing an example. 111...Nail plate, 2...Substrate, 3...Cut-and-raised portion, 31--Flashing nail portion. 31a... Base end part, 31b... Tip part, 31c...
・Taper part, G11110 line, R-・Shari. Patent applicant Mitsui Home Co., Ltd. Agent Patent attorney Hiroshi Fujiwara 115 Figure 6 "Teitosari" MljjF (self-proposed) 1981 Patent Application No. 51832 2 Name of the invention・ 3. Relationship with the case of the person making the amendment Patent applicant's address: Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo [I 1-1-4, attorney's statement 60.4-' (Contents of the suspension) (1) On page 3, line 18 of the specification, the phrase "at the nail plate" is corrected to "at the nail plate." (2) Specifications, 1) From the 3rd line to the 4th line on page 9, the phrase ``Each cut-up portion 3 cut-up length'' has been changed to ``
The cut-and-raise length of each cut-and-raise portion 3 is corrected. that's all

Claims (7)

[Claims] (1) A nail that functions as a joining needle by cutting and raising a metal plate at a plurality of predetermined places by shearing and bending with a press molding machine, and press-fitting the cut and raised parts into the vicinity of the mutual joints of wood or laminated wood. In the plate, each of the cut and raised portions is composed of a pair of symmetrical nail portions that are cut and raised in opposite directions, and each of the nail portions has a tip end narrower than a base end, A nail plate characterized in that the raised portions are arranged in series in the same direction in a plurality of parallel rows, and are arranged in a staggered manner in opposing rows. (2) The nail plate according to claim 1, wherein each of the cut-and-raised portions is formed to have the same cut-and-raised length. (3) The nail plate according to claim 1, wherein each of the cut and raised portions has two types of cut and raised lengths, long and short. (4) The cut-and-raised portions are arranged in a staggered manner so that the cut-and-raised portions are all formed to have the same cut-and-raised length, and the effective cross-sectional area in a cross section perpendicular to the row direction is the same at every position. A nail plate according to claim 1. (5) The nail plate according to any one of claims 1 to 4, wherein each of the cut and raised portions is formed into a curved surface shape with a tip thereof curved outward. (6) The nail plate according to any one of claims 1 to 4, wherein each of the cut and raised parts has a tip end formed in a substantially rectangular shape when viewed from the side. (7) The nail plate according to any one of claims 1 to 4, wherein each of the cut and raised portions has a distal end portion divided into a substantially forked shape.