JPH0622607U - Board nail - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the pull-out resistance of plate nails driven into ALC. [Structure] A head portion 3 is provided on an upper end of a body portion 2 formed by using a strip-shaped flat plate, and the body portion 2 is projected toward one surface side of the body portion 2 and gradually narrows from the head portion 3 toward a tip. The bent portion 4 is formed by press molding. When the body portion 2 is driven into the ALC, the wedge effect due to the taper of the bent portion 4 causes the ALC
And the body portion 2 has elasticity in the width direction due to the bent portion 4, and a strong pull-out strength is secured by the spring effect.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plate nail, and more particularly to a plate nail used when mounting a metal fitting or the like in the construction work of lightweight foam concrete (ALC).

[0002]

[Prior art]

 Conventionally, a nail for attaching metal fittings to an ALC has a tapered head provided with a head portion at one end of a body portion using a square shaft, and one surface of the body portion having a downwardly sloping tapered surface. Nails are used.

[0003]

[Problems to be solved by the device]

 By the way, ALC has poor elasticity, and the conventional tapered cut nail that is driven into this compresses ALC on the tapered surface of the body, but the compressive force is lateral in the width direction of the tapered surface. Occurs, and when a lateral force is applied, loosening is likely to occur and a strong pulling-out effect cannot be obtained.

Further, in the tapered cut nail, there is a problem in that the tapered surface needs to be processed on one surface side of the square shaft body, so that it takes time and effort to manufacture and the manufacturing cost becomes high.

Therefore, an object of the present invention is to provide a plate nail for ALC which has a high pulling strength and is inexpensive to manufacture.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a head portion at one end of a body portion using a strip-shaped flat plate, and the body portion protrudes to one side of the body portion from the head portion toward the tip. This is a structure in which a bent portion that gradually becomes narrow is formed.

[0007]

[Action]

 Since the bending part provided on the body gradually becomes narrower from the head to the tip, the wedge effect of compressing the ALC is obtained by driving into the ALC, and the body is bent in the width direction by the bending part. It has elasticity, and due to the spring effect by driving, strong pulling strength and locking effect can be obtained.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the plate nail 1 is provided with a head portion 3 on the upper end of a body portion 2 using a strip-shaped flat plate, and the body portion 2 is protruded to one side of the body portion 2 and is tipped from the head portion 3. It has a structure in which a bent portion 4 that gradually becomes narrower toward is formed.

In the illustrated case, the head part 3 has an integral structure in which an extension part connected to the upper end of the body part 2 is bent at a right angle to one side of the body part 2, but a separate head part is welded. It may be fixed by.

Further, the bent portion 4 is formed in an arcuate cross-section, and the trunk portion 2 is gradually narrowed from the head toward the tip and the amount of protrusion is reduced, so that the bent portion 4 ends before reaching the tip 5. It has become.

The bending portion 4 as described above has a taper shape that is wide and has a large protrusion amount toward the head 3 side, and a wedge effect at the time of driving is obtained, and the bending portion 4 forms a part of the body portion 2. Since it is formed by embossing to the one surface side, elasticity in the width direction is given to the body portion 2, and therefore a spring effect in the width direction is generated in the body portion 2.

The maximum width of the bent portion 4 is set to be slightly smaller than the width of the body portion 2, and the body portion 2 has flat plate portions 6 and 6 on both sides of the bent portion 4, and the flat plate portions 6 and 6 are It becomes the lead role when being driven into ALC.

The bent portion 4 is not limited to the arc-shaped cross-sectional shape as shown in the figure, and may have a cross-sectional shape that can be press-molded, such as an ellipse, a V-shape, or a rectangular shape. The bent portion 4 may be formed not only in one mountain but also in two or more mountains in parallel.

The plate nail of the present invention has the above-mentioned structure. When the body part 2 is hit by hitting from the head part 3 to attach a metal fitting or the like to the ALC, it is formed on both sides of the body part 2. The flat plate portions 6, 6 serve as a lead, and the bent portion 4 in which the amount of protrusion is gradually widened is introduced in a correct posture.

Since the bent portion 4 is tapered with a large width on the head 3 side and a large amount of protrusion, the ALC is moved into the ALC by driving, and the ALC is moved in the protruding direction of the bent portion 4 and the width direction of the body portion 2. Compress against.

At the same time, the body portion 2 to which the elasticity in the width direction is added by the bent portion 4 has a spring effect that pushes the ALC in the width direction due to the compression in the width direction due to the entry.

As described above, due to the proper compressive strength of the ALC by the bent portion 4 and the widthwise springing effect of the body portion 2, the body portion 2 is strong against any external pressure in the width direction and the front-back direction. It is firmly fixed, and therefore a strong pulling-out effect and locking effect can be obtained.

[0019]

[Effect of device]

 As described above, according to the present invention, due to the compression of the ALC by the bent portion and the spring effect of the body portion, the pullout strength is high and the loosening prevention effect is excellent, and even if vibration is applied, it easily comes off. There is no such thing.

Further, it can be manufactured by press molding using a flat plate, mass production becomes possible, and an inexpensive product can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a plate nail of the present invention.

FIG. 2A is a side view of a plate nail, and B is a front view of the same.

3 is a plan view showing the head of a plate nail, and B is a line b in FIG.
-B is a cross-sectional view taken along line C, C is a cross-sectional view taken along line c-c in FIG.
D is a sectional view taken along line d-d in FIG.

[Explanation of symbols]

 1 Plate nail 2 Body part 3 Head part 4 Bent part 5 Tip 6 Flat plate part

Claims (1)

[Scope of utility model registration request] 1. A head portion is provided at one end of a body portion using a strip-shaped flat plate, and a bending portion that protrudes toward one surface side of the body portion and is gradually narrowed from the head portion to the tip is provided. Formed plate nails.