JP2547710B2 - Nail removal for corrugated sheet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to nail removal, and more particularly to nail removal for corrugated sheets mainly used for roofing materials and the like.

[0002]

2. Description of the Related Art Conventionally, as a nail puller for this kind of corrugated sheet, a commonly used ordinary nail puller has been used, and it has not been particularly made for a corrugated sheet. However, in a normal nail pulling, as shown in FIG. 6, a rod-shaped nail pulling main body 22 has a fulcrum portion 23 bent in a U-shape and a nail scissor portion 24 opened in two, and the other tip end. The nail puller 21 with the slightly thicker grip 25 is formed on the actual flat surface 3-79.
It is proposed by Japanese Patent No. 274, which can also be used as a nail puller for corrugated sheets. In addition, the actual exploitation 57-636
No. 83, Japanese Utility Model Laid-Open No. 55-98584 and the like also propose nailing for corrugated sheets.

[0003]

However, in the nail pulling 21 shown in FIG. 6, the following problems are unavoidable even if the nail pulling 21 is used for pulling out the corrugated sheet. That is, in this nail pulling 21, since the width W of the nailing fulcrum portion 23 is narrow and flat, and the tip of the nail scissors portion 24 is sharply pointed, the nailing fulcrum portion 23 is waved as shown in FIG. Even if an attempt is made to abut the mountain portion A'of the plate A to pull out the nail, the corrugated sheet made of galvanized iron or plastic is particularly likely to slip off, so that it is difficult to apply force. It will be driven into the nail head on the upper side (see FIG. 4).

In the peak portion A'of the corrugated plate, the corrugated plate is punctured or cracked due to the impact at the time of driving, and further the force is applied to the fulcrum portion 23 for pulling out the nail so that the nail is actuated. There is a problem that the corrugated plate A is deformed to pull out and the force of pulling out the nail is halved, and as a result, the efficiency of the nail pulling work is not improved and the intended purpose is not achieved.

Further, the one disclosed in Japanese Utility Model Laid-Open No. 57-63683 must be provided with a protruding portion such as a hammer and a pillow, while the one described in Japanese Utility Model Publication No. 55-98584 is formed in an arch shape. However, a complicated work of providing a bridge portion is required, and each of them has difficulty in production and practical use.

In view of the above situation, the inventor of the present invention can always perform stable positioning without slipping off the fulcrum of the nail pulling from the ridge of the corrugated plate even if the fulcrum of the nail comes into contact with the ridge of the corrugated plate. As a result of continuing various studies on the shape of the fulcrum part of the nail removal in order to find a nail removal that would improve the work efficiency without damaging the plate, the backside of the fulcrum part of the nail removal is the corrugated plate. It has been found that a concave groove or the like that can straddle the ridge is formed as a shape that allows stable positioning without slipping off when the ridge is abutted.

Thus, the present invention has been made based on the above-mentioned findings, and it is possible to improve the simple construction and the easiness of handling, simplify the corrugated plate nailing work without damaging the corrugated plate, and improve the efficiency thereof. The purpose is.

[0008]

That is, the present invention, which is adapted to the above object, includes a fulcrum portion bent in an L shape at one end of a nail pulling body, and a bifurcated nail scissor portion at its tip. In the nail removal for corrugated sheet, a concave circular groove along the longitudinal direction is formed on the outer surface of the base portion extending from the fulcrum portion that comes into contact with the crest portion of the corrugated sheet to the tip during nail removal, and substantially the central portion of the base portion. Is characterized in that a concave cut portion is formed so as to intersect with the round groove. Then, a portion from the fulcrum portion bent into the L shape to the forked nail scissors portion at the tip is formed as a separate body, and the inclination can be adjusted with respect to the nail pulling body by a shaft pin. It is preferable in terms of handling. Further, if the nail puller is provided with a wide fulcrum portion bent in a U shape on the other end side of the nail pulling main body and a bifurcated nail scissor portion at its tip, the purpose of use is further expanded, which is preferable. .

[0009]

In the nail pulling according to the present invention, since the concave circular groove is formed on the outer surface of the fulcrum portion along the longitudinal direction of the base portion, the nail pulling operation is performed on the outer surface of the mountain portion such as galvanized iron or the corrugated plate made of plastic. Even if the fulcrum is applied to the crest of the corrugated plate by applying it to the corrugated plate made of easy material, the fulcrum is fixed by the wide circular groove formed in the base part over the crest of the corrugated plate. Therefore, the fulcrum portion does not slip off and the corrugated plate is not damaged, and the nail can be easily pulled out in a stable state. Moreover, in this nail pulling, since the tilt angle between the fulcrum portion bent into an L shape and the nail pulling body, that is, the opening / closing angle of both, is adjusted, it can be adapted to the size of nails. Further, in the nail pulling of the present invention, since the other end side of the nail pulling main body is further provided with a fulcrum portion bent into a U shape and a nail scissors portion, the corrugated plate The nail puller can function even when the fulcrum portion of the nail puller is in contact with the valley.

As described above, in the nail pulling according to the present invention,
The corrugated plate is stable because it abuts over the ridges, and the fulcrum part adjusts the inclination angle with the nail pulling body, and
Since it is possible to combine two or more nail pulling functions in spite of the nail pulling out of a book, it is possible to improve the nail pulling work efficiency of the corrugated sheet.

[0011]

EXAMPLES Examples of the present invention will now be described with reference to the drawings, but it goes without saying that the present invention is not limited thereto.

FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention, and FIG. 2 is a view showing another embodiment of the present invention.
FIG. 4 is an exploded perspective view of a fulcrum portion in the nail removal shown in FIG. 2 in a state where the tilt is adjusted, and FIG. 3 is a perspective view of a main portion showing another embodiment. Further, FIG. 4 and FIG. 5 are perspective views of main parts showing the usage state of the nail puller according to the present invention.

In each of these drawings, reference numeral 1 denotes a nail puller according to the present invention, and 2 denotes a nail puller main body. Further, at one end of the nail pulling main body 2, a fulcrum portion 3 bent into an L shape and exhibiting a so-called lever function, and a nail scissor portion 4 having a bifurcated opening at the tip thereof are provided, and at the other end side. A grip portion 5 having a thick locking portion is formed to prevent slippage. Then, in the base portion 6 located on the back surface side of the fulcrum portion 3 bent in the L-shape, the mountain portion of the corrugated plate, which is one of the most important configurations in the present invention, extends along the outer surface in the longitudinal direction. A concave round groove 7 that can come into contact with the upper side and a concave cut portion 8 that intersects with the round groove 7 are formed at substantially the center of the base portion 6.
Next, the nail puller shown in FIGS. 2 (a) and 2 (b) has a tip of 2 from the fulcrum portion 3 bent in the L shape of the nail puller 1 shown in the above figure.
As shown in FIG. 3, the claw-shaped nail scissors portion 4 is provided as a separate body, and the nail scissors portion 4 is provided at a continuous portion B with the nail-pulling body 2 as shown in FIG.
It can be changed and adjusted to be fixed.

That is, as shown in FIGS. 2A and 2B,
The fulcrum portion 3 and the nail pulling body 2 are formed, for example, as a fitting structure by a concave portion 9 and a convex portion 10, and both of them are capable of inserting and fixing the shaft pin 13 as shown in FIG. Although the pin holes 11 and 12 are provided, the above-mentioned pin hole 1
1 and 12, one of the pin holes 11 is the other pin hole 12
One more is provided in the front part compared to. Of course, the number of pin holes 11 in the front portion is not limited to two, and it is possible to further increase the number appropriately according to the inclination adjustment engagement between the nail pulling main body 2 and the fulcrum portion 3. The state in which the L-shaped bent fulcrum portion 3 is attached to the nail-pulling main body 2 is as shown in FIG. In the main nail removal, as described above, since the inclination angle θ between the fulcrum portion 3 and the nail removal main body 2 is adjusted, the nail scissors portion 4 easily copes with the difference in the thickness, length, etc. of the nail. be able to.

Further, in the embodiment shown in FIG. 3, the nail pulling body 2 is used.
One end (left side) of the fulcrum part 3 bent in an L shape and a nail scissor part 4, and the other end side (right side) of the fulcrum part 3'bent in a U shape and a nail scissors. And an end portion 4 ', and both ends thereof are twisted by 90 degrees with respect to the axis of the nail pulling body 2, and the fulcrum portion 3 bent in an L shape is inclined. By adjusting the tilt angle so that it can be adjusted, it is possible to appropriately respond to the work conditions for nailing the corrugated plate. Of course, the twist angle with respect to the axis of the nail pulling body is not particularly limited, and can be arbitrarily selected depending on the nail pulling work, easiness of handling, and the like.

Next, the use state of the nail puller 1 of the present invention will be described. In the conventional nail puller 21, the base portion 2 of the fulcrum portion 23 is used.
6 is located on the crest of the corrugated plate, the width W of the base 26 is narrow even when trying to pull out a nail on the crest along the crest, so-called vertical direction (see FIG. 6), so the positioning is unstable. It slipped down from the mountain and it was difficult to pull out nails, but
On the other hand, in the nail puller 1 of the present invention, as shown in FIG.
Since a round groove 7 along the longitudinal direction is provided on the outer surface of the base portion 6 that can straddle well in the longitudinal direction on the mountain portion A ′ of the corrugated plate A when removing the corrugated sheet 4, even on the mountain portion A ′. Positioning is easy because it does not slip off and abuts the mountain well. Further, in the concave cut portion 8 that intersects with the circular groove 7 in the substantially central portion of the base portion 6, as shown in FIG. 5, by utilizing the concave cut portion 8, the peak portion A ′ of the corrugated sheet A is formed. On the other hand, it is possible to pull out the nail by straddling the mountain portion A ′ in the lateral direction, and in this state, the nail on the mountain portion or the nail in the valley portion between the adjacent mountains can be pulled out. Further, even if a wide fulcrum portion 3'formed in a U shape formed on the other end side of the nailing main body 2 and the nail scissors portion 4'are used, the fulcrum portion 3'is wide and is hard to slip, and its function is sufficiently exerted. Can be demonstrated. As described above, the nail puller of the present invention can be used in at least three ways.

[0017]

As described above, according to the present invention, a concave round groove is formed on the outer surface of the base of the nail pulling fulcrum so that the fulcrum extends over the crest of the corrugated plate. There are also crossed concave cuts, and the fulcrum of the nail puller is further tilted to set the angle of inclination between the nail puller and the fulcrum, and both ends of the nail puller have different shapes and functions. Since the nail is equipped with a fulcrum, stable positioning can be performed while the fulcrum is straddling the peaks of the corrugated plate, and the nails on the peaks or valleys of the corrugated plate can be easily removed. In addition to being able to adapt to changes in the size of nails, it is not necessary to impact the corrugated plate as with conventional nail pullers, so the corrugated plate can be reused without damage. Is. Moreover, since one nail can be used properly according to the purpose of the nail pulling work, the working efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a partially omitted perspective view showing an embodiment of the present invention.

2 (a) and 2 (b) are exploded perspective explanatory views showing another embodiment of the present invention, in which (a) is a nail-pulling main body part of which is omitted, and (b) is a nail-pulling fulcrum. The section side is shown.

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

FIG. 4 is an explanatory perspective view of a main part showing a usage state of nail pulling according to the present invention.

FIG. 5 is an explanatory perspective view of a main part showing another usage state of the nail extraction according to the present invention.

FIG. 6 is a perspective view of a main part of a conventional nail removing device with a part thereof omitted.

[Explanation of symbols]

 1 nail removal 2 nail removal main body 3, 3'fulcrum portion 4, 4 'nail scissors portion 5 grip portion 6 base portion 7 round groove 8 concave cut portion 9 concave portion 10 convex portion 11 pin hole 12 pin hole 13 shaft pin 14 nail B continuous Part

Claims (3)

(57) [Claims] 1. In the nailing for a corrugated sheet, which comprises a fulcrum portion bent in an L shape at one end of the nailing main body and a bifurcated nail scissors portion at the tip thereof, when the nail is pulled out, the peak portion of the corrugated sheet is touched. A concave round groove is formed along the longitudinal direction on the outer surface of the base portion extending from the contacting fulcrum portion to the tip, and a concave cut portion is formed in the substantially central portion of the base portion so as to intersect with the round groove. Nail puller for corrugated sheet characterized by that. 2. A portion from the fulcrum portion bent into the L-shape to the bifurcated nail scissors portion at the tip is formed separately.
2. The nail puller for corrugated plate according to claim 1, wherein the portion is made to be adjustable in inclination with respect to the nail puller main body by a shaft pin. 3. The nail removing main body further comprises a wide fulcrum portion bent in a U shape and a bifurcated nail scissor portion at the tip thereof on the other end side. Nail removal for the corrugated sheet described.