Bar

Abstract

To provide a bar capable of peeling a timber to easily pull out a nail even when there is no gap between timbers.SOLUTION: The bar comprises: a head having a V-shaped groove formed at a nail pull-out part of the tip attached perpendicularly to a bar-like shaft on one end side of the shaft; and a grip having a claw at the tip on the other end side of the shaft. An extension is provided behind the nail pull-out part so as to extend toward both sides of the head. An extension is provided below the claw so as to extend toward both sides of the grip. A hammer is provided behind the head.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a crowbar for extracting nails. [Background technology]

[0002] A crowbar is a rod-shaped tool that uses the principle of leverage to pull out nails that have been driven into wood, etc. It is mainly made of metal and one end is bent into an L shape. There are also ones with nail pullers on both ends and ones with a hammer attached to the other end of the bent end to make a T shape.

[0003] As described in Patent Document 1, an invention is disclosed for a nail puller that can easily pull out even long nails without complicated preparation, is not bulky, and has a simple structure and is easy to manufacture. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5046346 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the nail puller described in Patent Document 1 pulls out a nail by hanging the head of the nail in the roughly V-shaped notch of the working part and moving the handle backwards using the principle of a lever so that the side part draws an arc around the fulcrum part, but when a nail is driven into wood or the like, the head of the nail cannot be hung in the roughly V-shaped notch of the nail puller unless it protrudes from the top surface of the wood or the like. Therefore, the pointed tip of the nail puller is used to hollow out the wood or the like to forcibly expose the head of the nail, and then the nail is hung in the roughly V-shaped notch.

[0006] Also, when a lower piece of wood is fastened to an upper piece of wood with a nail, if there is a gap between the pieces of wood, it is possible to insert the pointed tip of a nail puller to widen the gap vertically and remove the nail, but it is difficult to remove the nail if there is no gap between the pieces of wood. To use the principle of a lever, such as with a nail puller, it is necessary to secure a fulcrum and a point of application.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a crowbar that can easily pull apart wooden pieces and remove nails even when there are no gaps between the wooden pieces. [Means for solving the problem]

[0008] In order to solve the above problems, the crowbar of the present invention is characterized in that it has a head portion with a V-shaped groove formed in a nail puller at the tip attached perpendicularly to one end of a rod-shaped shaft portion, and has overhanging portions protruding on both sides of the head portion rearward of the nail puller.

[0009] The crowbar is characterized in that it has a grip portion having a claw tip at the other end of the shaft portion, and a protrusion portion is provided below the claw portion and protrudes to both sides of the grip portion.

[0010] The crowbar is characterized in that a hammer portion is provided on the rear side of the head portion. Effect of the Invention

[0011] According to the present invention, even if there is no gap between the pieces of wood, the nail can be easily removed by pulling the pieces apart. When a lower piece of wood and an upper piece of wood are fastened together with a nail, the wooden pieces can be easily pulled apart by using the principle of a lever to secure a fulcrum on the lower piece of wood and place the head of the nail on the upper piece of wood as the point of application. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing a crowbar according to the present invention. [Diagram 2] FIG. 1 is a side view of a crowbar according to the present invention. [Diagram 3] FIG. 1 is a front view showing a crowbar according to the present invention. [Figure 4] FIG. 2 is a bottom view of the crowbar of the present invention. [Diagram 5] FIG. 1 is a diagram showing a situation in which two pieces of wood with nails driven into them are pulled apart using a crowbar according to the present invention. [Figure 6] FIG. 13 is a diagram showing a state in which a gap is created between pieces of wood using a crowbar according to the present invention. [Figure 7] FIG. 1 is a diagram showing a state in which a crowbar according to the present invention is inserted between pieces of wood. [Figure 8] 1 is a diagram showing the state in which the nail head is protruding from the back side of the wood peeled off with a crowbar according to the present invention. [Figure 9] FIG. 13 is a diagram showing a situation in which a nail with a floating head is pulled out using a crowbar according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that components having the same functions are designated by the same reference numerals, and repeated description thereof may be omitted. EXAMPLES

[0014] First, the structure of the crowbar of the present invention will be described. Fig. 1 is a perspective view of the crowbar. Fig. 2 is a side view of the crowbar. Fig. 3 is a front view of the crowbar. Fig. 4 is a bottom view of the crowbar. Note that the side of the crowbar head where the nail puller is located is the front, the side where the hammer is located is the rear, and the side of the grip where the claws are located is the top.

[0015] As shown in FIG. 1, the crowbar 100 has a head portion 400 with a V-shaped groove 410a formed in a nail puller portion 410 at the tip, which is attached approximately perpendicular to the shaft portion 200 to a neck portion 210, which is one end (lower side) of the rod-shaped shaft portion 200, and a grip portion 300 with a claw portion 310 at the tip, on the other end (upper side) of the shaft portion 200.

[0016] The crowbar 100 is a tool used to pull out nails stuck in wood, and is mainly made of metal such as iron. The tip of the long, thin rod is bent into an L-shape, and the short side of the rod is used as the point of application for hanging a nail, and the bent part is used as the fulcrum for placing the rod against the wood, and the long side is used as the point of force to rotate the rod so as to knock it down, thereby pulling out the nail with little force.

[0017] 2 and 3, the shaft portion 200 is a rod for connecting the grip portion 300 and the head portion 400. The upper end is connected to the grip portion 300, and the lower end is connected to the head portion 400 via the neck portion 210. By making the shaft portion 200 longer than the head portion 400, the force required to pull out a nail is reduced. When the upper portion of the shaft portion 200 is gripped with the hand, that is the point of force application.

[0018] Grip section 300 is connected to shaft section 200 and is the section to be gripped by hand to apply force. Claw section 310, which has a flattened tip, can be turned upside down and inserted into narrow gaps such as between wood fastened with nails to widen the gap, or can be used to hollow out the area around a nail driven into wood and hook claw section 310 onto the head of the nail to lift the nail.

[0019] The neck portion 210 serves as a fulcrum by connecting the shaft portion 200 and the head portion 400 at an angle close to a right angle. The shaft portion 200 extends upward, and the head portion 400 extends forward. It is preferable that the neck portion 210 is curved so that the shaft portion 200 can be easily rotated when it is struck against wood.

[0020] The head portion 400 is the point of action where the force required to pull out the nail is generated. It is connected to the neck portion 210 and has a nail puller 410 with a flattened tip and a forked V-shaped groove 410a formed in two for hanging a nail.

[0021] 4, the head portion 400 is provided with overhanging portions 420 that protrude to both sides of the head portion 400 rearward (lower side in the figure) from the nail puller portion 410. Similarly, the grip portion 300 is provided with overhanging portions 320 that protrude to both sides of the grip portion 300 lower than the claw portion 310.

[0022] The overhanging part 420 is provided to serve as a fulcrum instead of the neck part 210 when it is difficult to use the neck part 210 on the opposite side (rear) of the nail puller 410 as a fulcrum. For example, this may occur when the part to be applied to the wood is shifted to the side.

[0023] Additionally, a hammer portion 500 is provided on the rear side of the head portion 400. The hammer portion 500 may protrude rearward from the shaft portion 200, or may protrude as little as possible so that it can be easily used as a fulcrum when pulling out a nail.

[0024] Next, a case where a nail driven into two pieces of wood is removed using a crowbar according to the present invention will be described. Fig. 5 is a diagram showing a situation where two pieces of wood into which a nail has been driven are separated using a crowbar. Fig. 6 is a diagram showing a situation where a gap has been created between the pieces of wood using a crowbar. Fig. 7 is a diagram showing a situation where a crowbar has been inserted between the pieces of wood. Fig. 8 is a diagram showing a situation where the head of a nail is exposed from the back side of a piece of wood that has been peeled off using a crowbar. Fig. 9 is a diagram showing a situation where a nail with a loose head is removed using a crowbar.

[0025] 5, for example, a vertically oriented wooden piece 110a is fastened to a horizontally oriented wooden piece 110b so that they cross each other with a nail 120. The head of the nail 120 is driven into the wooden piece 110a so that it is continuous with the top surface (front surface) of the wooden piece 110a, and there is no gap 130 between the wooden piece 110a and the wooden piece 110b.

[0026] The nail puller 410 of the crowbar 110 cannot be inserted between the wooden piece 110a and the nail 120, or between the wooden piece 110a and the wooden piece 110b, unless it is forcibly twisted in, and the nail 120 cannot be pulled out using the neck portion 210 as a fulcrum.

[0027] Therefore, the side surface of the nail puller 410 is placed against the side surface of the wooden piece 110b, the upper surface of the nail puller 410 is placed against the lower surface of the wooden piece 110a, and the lower surface of the extension 420 is placed against the upper surface of the wooden piece 110b.

[0028] As shown in FIG. 6, when the shaft portion 200 is rotated backward with the overhanging portion 420 as the fulcrum, the shaft portion 200 as the force point, and the nail puller portion 410 as the point of action, the nail 120 comes out slightly, the wooden piece 110a floats, and a gap 130 is created between the wooden pieces 110b and 110a.

[0029] 7, the nail puller 410 is inserted into the gap 130 along the upper surface of the wooden piece 110b, and the shaft of the nail 120 is clamped in the V-shaped groove 410a of the nail puller 410. When the shaft portion 200 is rotated backward with the neck portion 210 or the hammer portion 500 in contact with the wooden piece 110b as a fulcrum, the wooden piece 110a together with the nail 120 is peeled off from the wooden piece 110b.

[0030] 8, when the wooden piece 110a is turned over, the shaft of the nail 120 protrudes from the back surface of the wooden piece 110a. If the shaft of the nail 120 is struck with the hammer unit 500 while the head of the nail 120 is not pressed down on the front surface of the wooden piece 110a, the head of the nail 120 protrudes from the front surface of the wooden piece 110a and becomes floating.

[0031] 9, the wooden piece 110a is turned over, and the head of the nail 120 floating above the surface (upper surface) of the wooden piece 110a is hooked into the V-shaped groove 410a of the nail puller 410. The shaft 200 is rotated backward with the neck 210 or the hammer 500 in contact with the wooden piece 110a as a fulcrum, and the nail 120 is pulled out of the wooden piece 110a.

[0032] According to the present invention, even if there is no gap between the pieces of wood, the nail can be easily removed by pulling the pieces apart. When a lower piece of wood and an upper piece of wood are fastened together with a nail, the wooden pieces can be easily pulled apart by using the principle of a lever to secure a fulcrum on the lower piece of wood and place the head of the nail on the upper piece of wood as the point of application.

[0033] Although the embodiments of the present invention have been described above, the present invention is not limited to these. For example, the grip portion may not have a claw portion, the claw portion may have a V-shaped groove, or the head portion may not have a hammer portion. [Explanation of symbols]

[0034] 100: Crowbar 110a: wood 110b: wood 120:Nail 130: Gap 200: Shaft section 210: Neck 300:Grip section 310: Claw part 320: Overhang 400: Head section 410:Nail pulling club 410a: V-groove 420: Overhang 500: Hammer section

Claims

1. A head portion having a V-shaped groove formed in a nail puller at a tip end of a rod-shaped shaft portion attached perpendicularly to the shaft portion, A protruding portion is provided on the rear side of the nail puller so as to protrude to both sides of the head portion. A bar characterized by:

2. A grip portion having a claw tip is provided on the other end of the shaft portion, A protruding portion is provided below the claw portion and protrudes to both sides of the grip portion.

2. The crowbar according to claim 1 .

3. A hammer portion is provided on the rear side of the head portion.

2. The crowbar according to claim 1 .

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