Crowbar for corrugated galvanized iron

Abstract

To provide a hand nail puller that suppresses various defects such as damage, deformation, and remaining nails when nailing corrugated iron. [Solution] The nail puller hand tool has a base plate with an uneven bottom surface that is the opposite of the uneven surface of the corrugated iron so that the excessive load that is applied directly and limitedly to the corrugated iron is widely and evenly distributed across the uneven surface of the corrugated iron, and is suspended above the base plate so that the force of the lever part (fulcrum) seen in existing hand tools is not applied directly to the corrugated iron surface. By combining the above two points into one, it becomes a hand tool that can suppress various problems when pulling out nails.

Description

[Technical field]

[0001] This device is a hand tool for pulling nails specifically for corrugated iron that has an integrated nail puller body and a support base that supports the body. [Background technology]

[0002] In the case of replacing or re-covering corrugated galvanized iron (hereafter referred to as corrugated sheet), which is a common roofing material for rafters, each individual or contractor used an existing crowbar to remove the corrugated sheet, depending on their own skill and technique, and the results varied greatly, which had a significant impact on the costs and length of the work. Summary of the Invention [Problem to be solved by the invention]

[0003] One problem with nail removal during removal of corrugated sheets, polycarbonate, etc. is that the lever of existing nail removal tools places an excessive load locally on the overlapping part of the uneven surface of the corrugated sheets. This results in problems such as deformation and damage to the base corrugated sheets and the cap nails themselves, which causes problems during work. Means to solve this problem

[0004] In order to distribute the force locally applied to the removed corrugated sheet and the base corrugated sheet by the nail puller widely and evenly, a support base is provided to support the nail puller so that the bottom (lever part) of the nail puller does not come into direct contact with the corrugated sheet, and a pair of side panels are erected on the support base and joined in parallel, and holes are drilled at the same diameter and size positions on both sides as the bottom of the nail puller main body, and the bottom of the nail puller is aligned to a position where it is raised enough to rub against the support base, sandwiched between the left and right side panels and passed through by a bolt and nut so that only the nail puller main body can rotate. At this time, fitting parts of the same diameter and shape as the bolt and nut heads are provided on the side panels so that the bolt and nut themselves do not rotate and can be fixed in place. By combining this support base with the nail plate main body to form an integrated unit, excessive force is not applied to the corrugated sheet and the cap nails, and deformation, damage, and other defects can be suppressed. Effects of the device

[0005] The corrugated galvanized iron bar of this invention distributes and reduces the load applied locally to the corrugated sheet to be removed and the base corrugated sheet, which is expected to reduce costs and shorten the construction period by suppressing defects such as damage and deformation of the corrugated sheet and the cap nails.

[0006] To explain the integral formation of the nail puller body (hereafter abbreviated as A) and the support base (hereafter abbreviated as B), through holes of the same diameter are drilled in the bottom of A and both side plates provided on plate B, and as mentioned above in the means column, A and B are integrated by aligning them at a position and height that allows the bottom of A to be raised to a height where it rubs against the top of plate B, and then sandwiching them with the side plates of B, at which point an oiling hole is provided on the back of the bottom of A to ensure smooth rotation of A. Also, two bolts / nuts are used, but one of the nuts is a plate-attaching nut that is directly joined and fixed to the left side plate. By passing A through the left side plate of B with a bolt, making them one piece, and tightening the nut on the right side plate, the bolt cannot rotate and can become the fulcrum for A. As a supplement to B, its bottom is made to match the unevenness of the corrugated sheet by joining three semicircular rod-shaped radius sections in parallel upward to the bottom of B, so that it matches up with the corrugated sheet, and as a result, the force acting locally on the corrugated sheet can be offset. [Brief description of the drawings]

[0007] [Figure 1] Plan view of the supporting substrate [Diagram 2] Support board front view [Diagram 3] Plan view of the nail puller body [Figure 4] Front view of nail puller body [Diagram 5] Side view of nail puller body [Figure 6] Simplified diagram of nail puller body [Explanation of symbols]

[0008] A is a round rod-shaped bolt with an inner diameter of 20 mm and no tightening groove, and a diameter of 10 mm, to connect the nail puller to the side panels (D, E) erected on the support base. B is a nut that is fixed to E so that bolt A will be the fulcrum during work and A itself will not rotate. This nut is used to tighten the nail puller body, which is integrated with CA, and adjust it to rotate smoothly. This nut works in conjunction with DC to properly secure bolt A. By fixing A and C to EB, the fulcrum of the nail puller body is secured.

Claims

[Claim 1] This handheld nail puller is made of a single body consisting of a nail puller body and a support base that supports the body and aims to maintain the original shape of the uneven surface of the underlying corrugated sheet, with the aim of preventing problems such as deformation or damage to the overlapping parts of the uneven surface of the corrugated sheet and damage to only the cap part of the nail when removing nails from roofing materials, corrugated galvanized iron, and polycarbonate (hereinafter referred to as corrugated sheet) corrugated sheets that are removed during replacement or exchange work.

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