JPS6315089B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an electric cutter having a dust collection cover.

Electric cutters used for cutting stones, etc. have a cutting blade made of hard material such as diamond on the outer periphery of a rotating cutting blade, and this rotating blade is rotated at high speed to cut the material. .

Therefore, in a dry electric cutter that does not use cooling water, a large amount of dust is scattered around when cutting.

In order to prevent this dust from scattering, a discharge port is provided in the casing and connected to the cleaner.
Dust is sucked out to a place where it does not interfere with work, etc., but as shown in Figure 1, near the end of cutting, the dust generated by cutting is not introduced into the casing but scatters forward. However, good results were not obtained.

On the other hand, this type of electric cutter is operated manually by the operator, but it has the disadvantage that the rotating blade, which is rotating at high speed, is exposed from the cut object near the end of cutting, which is extremely dangerous. .

In view of these circumstances, the present invention provides an electric cutter equipped with a dust collection cover that covers the rotary blade exposed from the cut object just before the end of cutting work, and that collects dust scattered forward and introduces it into the casing. It is an object.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings.

FIG. 2 is a partial sectional view of the electric cutter according to the present invention, FIG. 3 is a diagram showing the shape of the dust collecting cover, and FIG. 4 is a sectional view taken along line A-A of the casing. Further, FIGS. 5 and 6 are diagrams showing the state of movement of the cover just before the start and end of the cutting operation, respectively.

In FIG. 2, a rotary blade 3 equipped with a handle 1 and fixed to an electric motor 2 is protected at its upper part by a casing 4 fixed to the electric motor 2. Furthermore, a base 5 is horizontally attached to the electric motor 2 to expose the lower part of the rotary blade 3. On the outer periphery of the rotary blade 3, a cutting blade 3 is formed by gluing diamond.
a is configured.

A discharge port 6 is provided at the front upper part of the casing 4 and is connected to a cleaner (not shown). A dust collection cover 7 is provided at the front of the casing 4 and is rotatable along the outer periphery of the rotary blade 3, so that the dust collection cover 7 can be moved in and out of the casing 4.

This dust collecting cover 7 has a lower tip 7a formed in a warped shape, a hole 8 is rotatably attached to a support portion 10 of a bearing 9, and is further attached to the inner wall of the casing 4 with a spring 11.

The cover 7 is normally exposed below the base 5 from the casing 4 due to the tension of the spring 11 and its own weight, as shown in FIG. can do.

In the above configuration, the operator grasps the handle 1 to support the electric cutter, aligns the rotary blade 3 with the cutting location, and places the tip of the base 5 and the tip 7a of the dust collection cover 7 on top of the stone. I'll ride it. After pushing the dust collection cover 7 into the casing 4, turn on the power and rotate the rotary blade 3.
The base 5 is pushed forward against the stone and cut.

At this time, as shown in FIG.
Since the tip 7a slides on the stone, there is no problem with cutting work, and the dust generated by cutting is sucked out from the casing 4 to the cleaner through the discharge port 6, as in the conventional case, preventing dust from scattering. be done.

Furthermore, even if the tip of the base 5 separates from the stone just before the end of cutting, the tip 7a of the dust collecting cover 7 will be able to push the base 5 from inside the casing 4 due to its own weight and the elasticity of the spring 11, as shown in FIG. The rotating rotary blade 3 moves downward and is exposed from the stone.
It can cover the area and catch dust generated by cutting.

Therefore, the dust that would conventionally be scattered forward just before the end of cutting can be introduced into the casing 4 via the dust collection cover 7, and can be sucked out from the discharge port 6 by the cleaner.

According to the above configuration, all the dust generated during cutting work can be sucked out by the cleaner from the exhaust port 6 provided in the casing 4, so the work area can be kept clean, and the worker can also avoid inhaling the dust. It can eliminate the fear of harm to your health.

Furthermore, just before the end of the work, the rotating rotary blade 3 exposed from the stone can be covered with the dust collection cover 7.
Work can be done extremely safely.

Further, in this embodiment, the spring 11 is used to fix the dust collection cover 7, but if the dust collection cover 7 has a large weight, it can function sufficiently with its own weight, making it easy to manufacture. Become. Of course, the shape of the dust collection cover is not limited to this embodiment and can be implemented as appropriate.

As explained above, the present invention provides an electric cutter that is equipped with a dust collection cover that covers the rotating rotary blade that is exposed from the object to be cut just before the end of the cutting operation, and that collects dust that is scattered forward and introduces it into the casing. This can prevent dust from scattering and improve work safety.

[Brief explanation of the drawing]

Figure 1 shows a conventional electric cutter.
Fig. 2 is a partial sectional view of the electric cutter according to the present invention, Fig. 3 is a view showing the shape of the dust collection cover, Fig. 4 is a sectional view taken along line A-A of the casing, and Figs. 5 and 6 are respectively It is a figure which shows the movement of the dust collection cover just before the start and end of a cutting operation. 3... Rotating blade, 4... Casing, 5... Base, 6... Discharge port, 7... Dust collection cover.

Claims (1)

[Claims] 1. In an electric cutter that exposes a rotating blade to the lower part of the base, a casing that covers the rotating blade is provided on the top surface of the base, a dust outlet is provided in the casing, and the rotating blade is rotated with the working part of the rotating blade facing the front. Further, a dust collection cover is configured to rotate substantially coaxially with the rotary blade and is provided in the front part of the casing so as to be removable, and the dust collection cover is biased by its own weight or a spring in the direction of exit. An electric cutter characterized in that the electric cutter is configured to cover a part of the rotary blade exposed from the cut object.