JPH0723812U - nail - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a nail that can more firmly join plate materials and the like. [Structure] A bent portion 9 is provided on the nail shaft 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nail used for joining plate materials and the like.

[0002]

[Prior art]

 When joining plate materials with nails, in order to more firmly join the plate materials, the device is designed to increase the pull-out resistance of the nails.

An example thereof is a nail as shown in FIG. The nail 31 shown in FIG. 5 is obtained by knurling 32 on the peripheral surface of the nail shaft, and the pull-out resistance of the nail is increased by the friction between the plate material and the peripheral surface of the nail shaft.

[0004]

[Problems to be solved by the device]

 However, the above-mentioned nail cannot sufficiently increase the pull-out resistance.

The present invention proposes a nail having a simple structure that solves the above-mentioned inconvenience of the current situation and can more firmly connect plate members.

[0006]

[Means for Solving the Problems]

 In the nail of the present invention, a bent shaft portion is provided to achieve the above object.

[0007]

[Action]

 Since this nail is configured as described above, when it is driven into the plate material, it is driven while forming a bent driving hole in the plate material, and the resistance of pulling out the nail is increased.

[0008]

【Example】

 1 and 2 show an embodiment of the present invention. Embodiments will be described below with reference to the drawings.

As shown in the figure, a nail 1 is composed of an inverted conical nail head 2 and a nail shaft portion 3 extending from the center of the head. The tip in the opposite direction forms a sharp point 4. Further, a plurality of grooves 5 are spirally formed in the vicinity of both ends of the nail shaft portion 3 and the peripheral surface of the intermediate portion thereof. In this specification, the end of the nail shaft 3 in the direction of the nail head 2 is defined as the upper end of the nail shaft, and the end of the sharp shaft 4 in the direction of the sharp end 4 is defined as the lower end of the nail shaft.

Then, the nail shaft 3 extending from the nail head 2 is formed in a straight line from the upper end of the nail shaft to a length of about 4 which is about 5 minutes of the total length of the nail shaft, and about 1/5 of the remaining length. The curved portion 9 is formed in a bow shape having a gentle length.

The nail 1 configured as described above has two wires 6, 6 and a nail shaft 6 arranged in parallel with each other in consideration of ease of transportation and use in an automatic nailing machine. By fixing 3 and 3 by welding 7 or the like, a large number of nails 1 are connected and held in parallel. In addition, as shown in FIG. 1, the nails 1 to be connected and held are arranged such that the bending portions 9 of the adjacent nails 1 are bent in opposite directions.

Next, the operation of the above embodiment will be described.

The nails 1 that are connected and held as described above are separated from the wire 6 that connects and holds the nails by the automatic nailing machine when joining the plate members 8 and the like, and is driven into the plate member 8. At this time, the nail 1 is driven into the plate material 8 in a curved line according to the shape of the bent portion 9 of the nail shaft 3 to join the plate materials 8.

In the nail 1 driven in this way, the axis line of the upper part of the nail shaft and the axis line of the lower part of the nail shaft are bent, so that the pull-out resistance of the nail is increased and the plate materials can be firmly joined.

Further, the spiral groove 5 provided on the peripheral surface of the nail shaft further increases the pulling-out resistance of the nail and enables stronger joining.

Further, the bent portion 9 of the nail shaft 3 draws a gentle curve so that the nail 1 can be smoothly driven into the plate member 8.

Further, the arrangement of the nails 1 that are connected and held as described above is such that the bending portions 9 of the adjacent nails 1 are arranged so that the bending directions thereof are opposite to each other. When driving continuously, the bending directions of the nails that are driven in continuously differ from each other, so even if a force is applied to one nail in the direction that weakens the pullout resistance, the pullout resistance will not be applied to the other nail. Since it does not tend to weaken, a stronger bond can be made.

Although the lower portion of the nail shaft is bent in an arched shape in the above-described embodiment, the present invention is not limited to the above-described embodiment. For example, like the nail 10 shown in FIG. 3, a bent portion 11 is formed in the middle portion of the nail shaft so that the axis line below the nail shaft is parallel to the axis line above the nail shaft, or the nail 20 shown in FIG. As described above, the bent portion 21 may be formed in the middle portion of the nail shaft so that the lower axis of the nail shaft is positioned on the same straight line as the upper axis of the nail shaft.

Further, in the above-mentioned embodiment, the spiral groove 5 is provided on the peripheral surface of the nail shaft at three locations to further increase the pull-out resistance of the nail. However, when pull-out resistance is not required so much, It is not necessary to provide a groove, and if it is desired to increase the pullout resistance, a groove may be provided over the entire circumferential surface of the nail shaft. Furthermore, it is not necessary to limit the groove to a spiral groove, and knurled irregularities, etc. It doesn't matter.

Further, in the above-described embodiment, an example in which a large number of nails are connected and held by the wire 6 for driving with an automatic nailing machine is shown, but a plurality of nails are used for driving with a hammer or the like. Of course, the books may be used as they are without being connected.

[0021]

[Effect of device]

 As described above, in the nail according to the present invention, since the bent shaft portion is provided, when joining the plate materials, etc., the nail is driven into the plate material according to the bending of the shaft portion and the pull-out resistance is greatly increased to firmly join the plate materials. Can be done. Further, when manufacturing the nail, it is only necessary to bend the shaft portion, so that the nail can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a nail of the present invention.

FIG. 2 is a cross-sectional view showing a nail driving state.

FIG. 3 is a perspective view showing another embodiment of the nail of the present invention.

FIG. 4 is a perspective view showing another embodiment of the nail of the present invention.

FIG. 5 is a front view showing a conventional nail.

[Explanation of symbols]

 1 Nail 3 Nail shaft 8 Plate 9 Bending

Claims (1)

[Scope of utility model registration request] 1. A nail having a bent shaft portion.