JP7193134B2 - ice and snow breaker - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ice and snow breaking tool for crushing various ice and snow such as icicles hanging from various structures and compacted snow covering road surfaces to ensure safety in winter.

In snowy areas, large icicles (icicles) may form at high places such as the eaves of buildings and the ceilings of tunnels, and if they suddenly fall, they may cause unexpected damage. For this reason, building administrators and others conduct regular inspections and knock down dangerous icicles with rods. Icicles are often formed in places that are difficult for people to approach, and depending on the weather conditions, they may grow large, and it is difficult to knock them down.

Examples of tools for crushing various types of ice and snow include the following patent documents. Among them, Patent document 1 discloses a road surface ice breaking tool that is excellent in safety, allows efficient work, and causes less fatigue. It is This tool has a structure in which a cone-shaped ice-splitting part is provided at the tip of an elongated shaft, and a cylindrical hollow shaft is inserted into the shaft. can touch the root of the part. In use, first, the tip of the ice-breaking portion is thrust against the frozen road surface, and then the hollow shaft is lifted. After that, the hollow shaft is swung down to collide with the ice breaking part, and the impact breaks the ice. With this tool, the position of the ice-breaking part can be fixed in advance, so work efficiency is good, there is less fatigue because there is no need to lift the whole tool, and the tool itself is not swung around, so it is excellent in safety.

Patent Literature 2 discloses a manual impact crusher that allows anyone to easily remove ice without requiring a large amount of force to work in a comfortable posture. This crusher has a structure in which a cone-shaped impact receiving blade is provided at the tip of a shaft, and a slidable weight is inserted into the shaft. When in use, the tip of the impact-receiving blade is first struck against an object such as ice, and then the lifted weight is dropped to collide with the impact-receiving blade. Objects can be crushed safely and easily. Therefore, the time, physical strength, and cost required for the work can be reduced.

Japanese Utility Model Laid-Open No. 5-16163 Utility Model Registration No. 3102616

Both of the above patent documents assume crushing compacted snow that covers the road surface, and a sharp cutting tool such as an "ice breaking part" or an "impact receiving blade" is directed downward to compacted snow, etc., and a stable state is achieved. can perform a series of tasks. However, there are various types of ice and snow that need to be crushed. In some cases, it cannot be easily crushed.

In both of the above-mentioned patent documents, it is assumed that the tip of the cutting tool is sharpened and a large impact load is applied so as to reliably crush ice and snow. However, on sidewalks, etc., tiles and blocks are sometimes laid on the road surface in consideration of aesthetics, and if a large impact load acts on them, they may be easily damaged, causing problems such as deterioration of aesthetics and subsequent repairs. do. In addition, there are various types of ice and snow to be crushed, such as compacted snow and icicles.

The present invention was developed based on these circumstances, and aims to provide an ice and snow breaking tool that can easily crush various types of ice and snow, including icicles formed at high altitudes, and that can suppress damage to the road surface. .

The invention according to claim 1 for solving the above-mentioned problem is a T-shaped blade comprising a handle extending in a rod shape and a cutting tool main body attached to the tip of the handle, and the handle is provided along its longitudinal direction. A movable weight is incorporated, and in order to regulate the movement range of the weight, the handle is provided with two stoppers so as to sandwich the weight . In addition to forming a front blade that protrudes in the opposite direction , a pair of rear blades that protrude in the same direction as the handle are formed on the opposite side of the front blade in the cutting tool body, and the rear blade : It is arranged at both left and right ends of the cutting tool body, and the outer edge line between the rear blade and the handle is curved in the opposite direction to the rear blade to form a relief portion. It is a tool for breaking ice and snow.

The ice and snow breaking tool according to the present invention has a structure in which a cutting tool body is provided on one end side of a bar-shaped handle, and the one end side of the handle is connected to the center part of the cutting tool body to integrate both. As a result, the cutting tool body and handle form a T-shaped appearance. The main body of the cutting tool plays the role of crushing hardened ice and snow, and is made of metal due to its nature. In addition, the handle is rod-shaped, and its length can be freely determined, and in consideration of transportation and storage, it is possible to make a structure in which multiple pieces are added. In this document, of the two ends of the handle, the side where the cutting tool body is attached is called the tip side, and the opposite side is called the root side. reach the position.

As in the above two patent documents, the weight is cylindrical and surrounds the side peripheral surface of the handle, is freely movable along the handle, and uses the kinetic energy of the weight to crush ice and snow. In addition, in the present invention, stoppers are provided at two locations in the middle of the handle, and the weight can be moved within those ranges. Therefore, the weight does not come into contact with the cutting tool body, and the degree of freedom of the shape of the cutting tool body is improved. As a matter of course, the two stoppers are spaced so that the function of the weight can be sufficiently exhibited, and it is desirable that the handle and the stopper are made of metal so as not to absorb the impact of the weight as much as possible.

The body of the cutting tool is made by cutting out a lump of metal, and a sharp edge is formed on a part of its outer peripheral surface. In the present invention, regarding this blade, in addition to forming a front blade that protrudes in the opposite direction to the base side of the handle, a rear blade that protrudes toward the base side of the handle is also formed. The front blade is therefore located on the opposite side of the handle, not much different from conventional products. However, in the present invention, by forming a rear blade in addition to the front blade, it becomes possible to knock down ice and snow hanging down from a high place, such as icicles, toward the near side.

Since the rear blade protrudes toward the base of the handle, it is inevitably necessary to place the rear blade slightly away from the handle . Then, the rear blade is made to bite into the side peripheral surface of the icicle, etc., and then the weight is moved from the tip side of the handle to the base side at high speed and collided with the stopper, so that the impact is transmitted from the handle to the rear blade, It can also knock down icicles that have grown large. In addition, when the rear blade bites into the icicle, it becomes a fulcrum and the whole is held in an imaginary state, and the operator does not have to bear the full load.

In this way, in the ice and snow breaking tool composed of the handle and the blade body, in addition to incorporating a movable weight in the handle, the blade body has a front blade that protrudes to the tip side and a blade that protrudes to the base side of the handle. The rear blade can be used in a variety of situations, allowing the front blade to crush compacted snow that covers the road surface, and the rear blade to knock down icicles hanging down from high places. Excellent for

According to a second aspect of the present invention, damage to the road surface due to the front blades is suppressed, and the front blades are arranged discretely at a plurality of locations. If the front blade were to be limited to only one point in the center, the load would be concentrated on that one point, so it would be possible to efficiently crush the ice and snow, but this would damage the tiles and blocks spread on the road surface. Therefore, as in the present invention, by dispersing the front cutting edge at a plurality of locations rather than at one location, the load is dispersed and such damage can be suppressed.

The invention according to claim 3 is intended to improve versatility, and is characterized in that the cutting tool body is detachable from the handle. The blade body and the handle can be integrated inseparably, but if they are detachable by some means, the optimum blade body can be selected according to the purpose, and it is possible to deal with all situations. Improves versatility. As a matter of course, during the ice and snow crushing work, the cutting tool body must not be detached from the handle, and both are often integrated with bolts or the like.

As in the first aspect of the invention, the ice and snow breaking tool is composed of a handle and a cutting tool body, and the handle incorporates a movable weight and a stopper that regulates the movement range of the weight. By forming a rear blade protruding toward the base of the handle in addition to the front blade protruding to the side, various types of ice and snow can be easily crushed. As a specific example, for compacted snow that covers a road surface, the front blade is first struck, and then the weight is caused to collide with the stopper, so that the compacted snow can be crushed by the impact without difficulty. In addition, in the present invention, the weight does not come into contact with the cutting tool body, and the shape of the cutting tool body can be simplified.

In addition, the rear blade is suitable for knocking down icicles. When the rear blade bites into the side surface of the icicles hanging down from a high place, the whole is held fictitiously with the rear blade as a fulcrum. Since it is not necessary to bear the full load, the physical burden is reduced. Moreover, in this state, the weight is moved to the root side at high speed and violently collided with the stopper, so that the icicles can be knocked down by the impact, and even large-grown icicles can be easily crushed.

As in the second aspect of the present invention, the front blades are arranged not only at one place but also at a plurality of places discretely, thereby avoiding excessive concentration of the load. Therefore, even on a road surface covered with tiles, blocks, etc., only the compacted snow can be crushed without increasing the burden on workers, and damage to the tiles, blocks, etc. can be suppressed.

As in the third aspect of the invention, the cutting tool body is detachable from the handle, making it possible to select the optimum cutting tool body according to the purpose, such as crushing compacted snow or knocking down icicles. improve sexuality. If the road surface is covered with tiles or blocks, it is possible to use a cutting tool body with multiple front blades to crush the compacted snow, and if the road surface is covered with concrete or soil. , a cutting tool body having only one front blade can be used, and one ice and snow breaking tool can be used for all situations.

A perspective view showing an example of the shape and use of the ice and snow breaking tool according to the present invention. It is assumed that a mass of ice and snow is placed on the roof of a building, and a large icicle hangs down from the bottom and is knocked down by the ice and snow breaking tool. doing. Fig. 2 is a perspective view showing a state after Fig. 1, in which an icicle is broken above the cutting tool body; FIG. 2 is a perspective view showing a situation in which compacted snow on a road surface is crushed by the ice and snow breaking tool of FIG. 1; FIG. 3 is a perspective view showing that the cutting tool body can be attached to and detached from the handle, and also depicts a plurality of cutting tool bodies that can be attached to the handle. FIG. 11 is a perspective view showing an example of a shape when the handle is replenishable;

FIG. 1 shows an example of the shape and use of the ice and snow breaking tool according to the present invention. In this figure, it is assumed that a mass of ice and snow is placed on the roof of the building, and a large icicle hangs down from the bottom and is knocked down with a tool to break ice and snow. This ice/snow breaking tool is composed of a handle 31 made from a square metal pipe and a cutting tool body 11 formed by cutting out a steel plate having a suitable thickness. integrated. Regarding the handle 31, the side where the cutting tool body 11 is attached (upper side in the drawing) is called the tip side, and the opposite side (lower side in the drawing) is called the root side.

The handle 31 is in the shape of a simple square bar, but a grip 34 is fitted to its root side, and when used, it is gripped by hand to reach the target position of the cutting tool body 11. - 特許庁Furthermore, a cylindrical weight 36 is inserted in the intermediate portion of the handle 31 . The weight 36 has a suitable weight and can move smoothly along the handle 31, but its movement range is restricted by stoppers 33 at two locations. The stopper 33 is integrated with the handle 31 by welding or the like, and receives the kinetic energy of the weight 36 without mitigating it.

Details of the cutting tool main body 11 are drawn in the lower left part of the figure. In the cutting tool body 11, on the opposite side of the handle 31 (upward surface of the cutting tool body 11 in the figure), five sharp front blades 21 are formed at predetermined intervals. is formed with a semi-circular recess 22 . On the opposite side of the front blade 21 (lower part of the cutting tool body 11 in the figure), rear blades 24 projecting toward the root side of the handle 31 (downward in the figure) are formed on the left and right sides. Also, a relief portion 25 is formed.

When actually knocking down an icicle, the cutting tool body 11 is turned upward as shown in the figure, and the rear blade 24 is made to bite into the side peripheral surface of the icicle. If the icicle is small, it can be knocked down simply by pulling the cutting tool body 11 toward the near side, but a large icicle will not be broken just by biting the rear blade 24, and the rear blade 24 will serve as a fulcrum. The ice and snow breaking tool is imaginarily held, and the same posture can be maintained only by placing a hand on the grip 34.例文帳に追加In this state, when the weight 36 is lifted to the tip side and then rapidly dropped to collide with the stopper 33, the impact is transmitted from the rear blade 24 to the icicle, and the icicle can be knocked down at once.

FIG. 2 shows the state after FIG. 1, in which the icicle is broken above the cutting tool body 11. FIG. This breakage is realized by the weight 36 colliding with the lower stopper 33, and after the breakage, the moving speed is restrained by putting a hand on the handle 31 to drop the icicle safely. The handle 31 and the cutting tool body 11 are firmly integrated with two bolts 41 so that the impact of the weight 36 is transmitted to the cutting tool body 11 without being relieved.

FIG. 3 shows how the snow breaking tool of FIG. 1 crushes compacted snow on the road surface. The road surface is made up of tiles for aesthetic reasons, and if an excessive load is applied to the tiles, there is a risk of damage. Therefore, in the present invention, the front blades 21 are arranged in five places in one cutting tool body 11, and even when the weights 36 are used, an extremely concentrated load can be suppressed, and when the cutting tool body 11 comes into contact with the road surface, However, the damage can be suppressed. In addition, by providing five front blades 21, compacted snow can be crushed in a wide range, and the work can proceed quickly.

FIG. 4 shows that the cutting tool body 11 can be attached to and detached from the handle 31, and also depicts a plurality of cutting tool bodies 12, 13, and 14 that can be attached to the handle 31. FIG. The handle 31 shown in this figure is made by using a metal square pipe, and has a weight 36 inserted in the middle thereof, and a stopper 33 for restricting the movement range of the weight 36 is integrated. The handle 31 and the cutting tool main body 11 are integrated with two bolts 41, and the side surface of the handle 31 is provided with a round hole 39 into which the bolt 41 is inserted.

A shank 28 protruding toward the handle 31 is formed in the center of the cutting tool body 11 drawn right above the handle 31 and is inserted into the inside of the handle 31.例文帳に追加The shank 28 is provided with two circular holes 29 through which the bolts 41 are passed. Therefore, the shank 28 is inserted inside the handle 31, the round hole 39 of the handle 31 and the round hole 29 of the shank 28 are aligned concentrically, the bolt 41 is inserted there, and the tip of the bolt 41 protruding on the opposite side of the handle 31 is inserted. When the nut 42 is screwed and tightened, the handle 31 and the cutting tool body 11 are integrated. A washer 43 is incorporated adjacent to the bolt 41 and nut 42 in order to relieve the stress acting on the side surface of the handle 31 .

As shown in FIG. 4, the cutting tool bodies 11, 12, 13, and 14 can be finished in various shapes. has been made A rear blade 24 is also formed in the cutting tool body 12, and by using this, the icicle can be knocked down to the front side as shown in FIG. The cutting tool body 13 drawn in the middle right of the figure has a front cutting edge 21 extending linearly and is used for splitting compacted snow in half. The cutting tool main body 14 shown in the lower right of the figure has a sharp wedge-shaped front blade 21, which is used for crushing hard ice. Of course, these cutting tool bodies 12, 13, and 14 can also be integrated with the handle 31 by inserting the shank 28 into the handle 31 and tightening the bolt 41 and nut .

FIG. 5 shows an example of the shape when the handle 31 can be added. It is necessary to increase the length of the handle 31 in order to knock down the icicles that have formed near the ceiling of the tunnel. Become. Therefore, as shown in this figure, there is a case where the handle 31 has a structure that can be added, and a detachable extension shaft 37 is used here. The extension shaft 37 has the same cross section as the handle 31, and has the function of simply increasing the length of the handle 31. The cutting tool main body 11 is attached to the tip side (left side of the figure) of the extension shaft 37. is the same as that of FIG.

The root side of the extension shaft 37 (on the right side of the figure) is connected to the handle 31 in which the grip 34 and the like are fitted. The bolt 41 is incorporated as shown, and the handle 31 and the extension shaft 37 are integrated. As for the bolt 41, a nut 42 is screwed to the tip of the bolt 41, and a washer 43 for relieving stress is incorporated as in FIG. In addition, consideration is given to the extension shaft 37 so that the impact of the weight 36 is not alleviated. Of course, there are various ways to increase the length of the handle 31, and a plurality of extension shafts 37 may be arranged in series.

11 Cutting tool body (five front blades)
12 blade body (three front blades)
13 Cutting tool body (front blade is straight)
14 cutting tool body (sharp forward blade)
21 Front blade 22 Relief (adjacent to front blade)
24 rear cutting edge 25 relief portion (adjacent to rear cutting edge)
28 Shank 29 Round hole 31 Handle 33 Stopper 34 Grip 36 Weight 37 Extension shaft 38 Joint 39 Round hole 41 Bolt 42 Nut 43 Washer

Claims (3)

It has a T-shape consisting of a rod-shaped handle (31) and a cutting tool body (11 or 12) attached to the tip of the handle (31),
The handle (31) incorporates a weight (36) movable along its longitudinal direction. ) are arranged so as to sandwich the two stoppers (33),
The blade body (11 or 12) is formed with a front blade (21) projecting in the opposite direction to the handle (31), and the front blade (21) is formed in the blade body (11 or 12). ) are formed with a pair of rear blades (24) protruding in the same direction as the handle (31) . and the outer edge line between the rear blade (24) and the handle (31) is curved in the opposite direction to the rear blade (24) to form a relief (25). An ice and snow breaking tool, characterized by: The ice and snow breaking tool according to claim 1, characterized in that said front blades (21) are arranged discretely at a plurality of locations. The ice and snow breaking tool according to claim 1 or 2, wherein the cutting tool body (11 or 12) is detachable from the handle (31).

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