JPH0323483Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool used to form grooves and remove seals filled in grooves.

Walls of buildings made of concrete may develop cracks over a long period of time, and such cracks can cause water leakage, so they are sealed.

Cracks can be easily repaired by filling the groove directly with a seal, but the width of the crack is often extremely small and it is often not possible to fill the seal sufficiently. It was necessary to widen the crack groove and process it to create a sufficient seal.

It is convenient to widen the width by using a groove-forming cutter, as it can form a groove of a constant width, but most cutters are not configured to form grooves in a straight line. Therefore, it was unsuitable for grooves that form in the shape of lightning bolts like cracks.

On the other hand, when forming a concrete wall surface, in order to cope with the expansion and contraction of the wall surface, there is a structure in which grooves are formed and a seal is applied so as to be able to cope with slight shrinkage.

In such a case, since the seal is applied to a pre-formed groove, the width of the groove is constant and it is easy to apply the seal.

However, in both the former and latter cases, the seal hardens after being used for a certain period of time, so it is common to need to replace it, and this type of work has increased dramatically in recent years.

However, there were no tools available to effectively cut grooves for cracks, and the process relied on manual labor, which posed the problem of requiring long-term repairs for large items such as buildings.

To replace the seal filled in the groove, use a tool with a relatively spatula-shaped tip, such as a screwdriver, to pull out the hardened old seal, thoroughly clean the groove, and then replace it with a new seal. When filled with

Therefore, in a large building such as a building,
The length of the groove is quite long, so it is not easy and dangerous work, and long-term work is difficult.
It was something I wanted to avoid.

The present invention was devised in view of these circumstances and aims to provide an effective tool for repairing cracks in concrete walls and replacing seals in joint grooves.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings. Fig. 1 is a perspective view of the main parts of the tool according to the invention, Fig. 2 is a front view thereof, and Fig. 3 is a perspective view of the main part of the tool according to the invention. is a side view thereof, and FIG. 4 is a plan view thereof.

FIG. 5 is a side view showing the state in which it is attached to an impact tool.

In FIG. 1, the tool has a U-shaped cross section, and has a cutting edge 1 at one end and a mounting portion 2 for attaching to an impact tool or the like at the other end.

The U-shaped groove 3 is formed to become shallower for a while and is bent to one side.

Furthermore, the bent groove 3a is open in one direction.

Further, the opening edge 4 of the groove 3 is formed with a flange 5 extending in a direction perpendicular to the opening direction.

Such tools are made of a hard material suitable for cutting tools, and have a cutting edge 1 formed at the tip.
does not wear easily against hard materials such as concrete.

In Fig. 2, the tool has a U-shaped cross section when viewed from the front, and is made of concrete 6
The structure is such that the U-shaped groove 7 can be easily formed in the groove.

The collar 5 slides on the surface of the concrete 6 to determine the position of the tool and also functions to ensure stable work.

As shown in Fig. 3, the tool is used in a position where the attachment part 2 is slightly inclined relative to the work material such as concrete 6, and the tool is used with the cutting edge 1 facing the machining direction when applying an impact. The machine is pressed in the machining direction while moving.

As shown in FIG. 4, the tool is constructed so that debris generated during machining is discharged as indicated by arrow 8 in the diagram during machining.

In FIG. 5, the tool is mounted on an impact tool 9 and is configured to be reciprocated by the impact tool 9. In FIG.

In such a configuration, the tool is an impact tool 9
When the cutting edge 1 is attached to a hard material such as concrete 6 and touches it, the axial impact of the impact tool causes the cutting edge 1 of the tool to break the work material such as concrete 6 and form a groove 7. It works like this.

When there is a crack in the concrete 6 and it is to be repaired, the tool is guided so that the groove 7 is formed along the crack, and the tool forms the U-shaped groove 7.

Further, after the grooves 7 are formed, a seal such as silicone is applied to the grooves 7 and hardened.

In such work, the tool can easily form a U-shaped groove 7 in the concrete 6, and the groove 3 of the tool can be bent to one side to form the groove 3.
Since the groove 7 of the concrete 6 is formed by the groove 7, the debris of the concrete 6 generated when forming the groove 7 of the concrete 6 is discharged to one side of the tool and does not interfere with the machining.

In particular, the groove 3a formed by bending one side of the groove 3a
This is less of a problem when it comes to concrete 6, which is scattered in the form of fine debris, but it is extremely effective when peeling off old seals applied to grooves 7 that have already been formed.

In other words, even when the seal is old, when it is removed from the groove 7, it does not become finely scattered debris like the concrete 6, but becomes a single strip of debris, so it is discharged in one direction of the tool. This does not become an obstacle to the work.

In the grooves 3 and 3a of the tool, the cutting edge 1 is directed toward the machining direction, and only the grooves 3 and 3a are bent in one direction, so that the influence of the grooves 3a formed by bending during machining occurs. This is effective because the waste is only ejected by bending in one direction.

Further, the collar 5 formed on the tool is extremely effective for adjusting the depth of the groove 7 relative to the concrete 6, and the groove 7 of a constant depth can be easily formed.

In particular, when forming grooves 7 along cracks, it is necessary to destroy a considerable amount of concrete 6 to form grooves 7, but the collar 5 acts as a guide to the surface of concrete 6 and the depth remains constant. Therefore, it is only necessary to operate the impact tool 9 or the like so that the cutting edge 1 advances along the crack, and processing can be easily performed.

When peeling off an old seal applied to an already formed groove 7, only the old seal can be successfully peeled off with the cutting edge 1 without the cutting edge 1 colliding with the concrete 6 which is the groove 7.

It is not necessary to use an impact tool; if the old seal applied to the groove is to be peeled off, it can be done by pressing strongly with the tool alone, or by hitting the mounting portion 2 with a hammer by hand.

The flange 5 that slides on the surface of the concrete 6 is not limited to being formed on one side of the opening, but can also be formed on both sides to obtain the effect of oscillation.

However, in the case of concrete 6, the surface of the guard 5 serving as a guide is hard, and experiments have shown that only one is sufficient.

Furthermore, if the collar 5 is formed only on one side, it is convenient and may be preferred because even if there is an obstacle such as a wall on the side where the collar 5 is not present, it will not interfere with processing.

Moreover, when the groove 7 is deep, it is possible to form the groove 7 of an appropriate depth by operating the impact tool 9 without necessarily forming the collar 5.

As explained above, according to the present invention, the cross section is formed into a U-shape, and the groove created by the formation of the U-shape is bent to one side and becomes shallower for a while. It is an extremely convenient tool for forming grooves, installing and replacing seals, and has extremely great practical value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts of a tool according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a plan view thereof. Fifth
The figure is a side view showing the state in which it is attached to an impact tool. 1...Blade tip, 2...Mounting part, 3, 3a...
Groove, 5... Tsuba, 6... Concrete, 7... Groove,
9...Impact tool.

Claims (1)

[Claims for Utility Model Registration] (1) Formed in a U-shape in cross section, a cutting edge is formed at one end, a mounting portion is formed at the other end, and the U-shaped groove is made shallower from the cutting edge. A tool characterized in that it is bent either to the left or right. (2) The tool according to claim 1 of the above-mentioned utility model registration claim, characterized in that a flange is formed on the edge of the U-shaped opening to extend outward.