JP2595530Y2 - Portable dust collecting circular saw chip discharge device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip discharging device for a portable dust collecting circular saw.

[0002]

2. Description of the Related Art A chip discharging device for a portable dust collecting circular saw according to the prior art will be described with reference to FIGS. As shown in the figure, a conventional dust-collecting circular saw cuts chips generated when cutting metal such as steel.
Is provided. In the dust collecting circular saw, spaces a and b are provided between the rotating blade 3 that is driven to rotate and the inner wall 8 of the saw cover 4 and the inner wall 9 of the dust collecting case 2 so that the rotating blade 3 can rotate. The swarf 1 that is generated when the cutting tool 3 cuts the powder is flipped up in the direction of arrow A by the rotational force of the rotary blade 3 and collides with the inner wall 8 of the saw cover 4 or the inner wall 9 of the dust collecting case 2 shown in FIG. Alternatively, it passes through the space b on the inner walls 8 and 9 and
To accumulate.

[0003]

In the conventional chip discharging device for a portable dust collecting circular saw, the rotating blade 3 is disposed between the rotating blade 3 and the inner wall 8 of the saw cover 4 and the inner wall 9 of the dust collecting case 2. A small space a is provided so as to be rotatable, but a high-temperature sharp chip 1 generated during cutting of a material to be cut, for example, steel material 1
Has passed through the space a and scattered on the feet and clothes of the worker as shown by arrows B and C in FIG. When the base 5 is moved as indicated by the dotted line to reduce the depth of cut as shown in FIG. 3, a space is formed between the base 5 and the saw cover 4, and the chips 1 pass through the space and collide with the rear end of the base 5. Then, it bounced off as shown by arrow D and was very dangerous. The purpose of the present invention is to solve the above problems,
It is to increase safety during work.

[0004]

The object of the present invention is to provide a method for cutting chips between a saw cover and a rotary blade to pass through a lower rear inner portion of the saw cover.
Is achieved by Rukoto provided with at least one control wall projecting chips passage.

[0005]

According to the above-described chip discharging device, the chip collides with the control wall to change the trajectory of the chip, so that the high-temperature and sharp chip is prevented from scattering to the operator. Can be.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows one embodiment of a chip discharging device for a portable dust collecting circular saw according to the present invention. As shown in FIG. 1, control walls 6, 7 are protrudingly provided at a lower portion inside the saw cover 4 and in a tangential direction of the rotary blade 3. In the figure, broken arrow B,
C indicates the trajectory of the chips without the control walls 6 and 7. By protruding the control walls 6, the chips 1 scattered by the rotary blade 3 collide with the control walls 6 and solid arrows. B '
The trajectory changes as follows. Also, the trajectory of the swarf 1 scattered from the rear end of the saw cover 4 as shown by the dashed arrow C can be changed by the lower control wall 7 as shown by the solid arrow C '. In the portable dust collecting circular saw configured as described above, a part of the high-temperature and sharp chips 1 that are not accumulated in the dust collecting case 2 at the time of cutting collide with the control walls 6 and 7 and change the trajectory. Therefore, it is possible to prevent the sharp chips 1 at high temperature from being scattered to the worker, and the safety at the time of work is improved.

[0007]

According to the present invention , chips between the saw cover and the rotary blade are provided at the lower rear inner portion of the saw cover of the portable dust collecting circular saw.
At least one control wall projecting chips within passageway passes
Since it is provided, a part of the high-temperature and sharp chips that have not been accumulated in the dust collecting case can be prevented from scattering to the operator, and the safety at the time of work can be improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a portable dust collecting circular saw showing one embodiment of the present invention.

FIG. 2 is a partial cross-sectional front view showing an example of a conventional portable dust collecting circular saw.

FIG. 3 is a partial cross-sectional side view for explaining the operation of FIG. 2;

[Explanation of symbols]

1 is a chip, 2 is a dust collecting case, 3 is a rotary knife, 4 is a saw cover, 5 is a base, 6 and 7 are control walls, and 8 is a saw cover 4
Is an inner wall of the dust collecting case 2, a is a space between the rotary cutter 3 and the inner walls 8, 9, and b is a space above the inner walls 8, 9.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-18808 (JP, A) JP-A 52-2481 (JP, U) JP-A 4-79601 (JP, U) JP-A 3-81 117528 (JP, U) JP-A-3-29221 (JP, U) JP-A-3-11518 (JP, U) Jiko 59-25601 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) B23D 47/00 B27G 19/04

Claims (1)

(57) [Scope of request for utility model registration] And 1. A handle portion, a housing having a built-in motor for driving a rotary tool driven by an electric motor,
In a portable dust collecting circular saw having a saw cover for covering a rotary blade and a dust collecting case for accumulating chips on the side of the saw cover, chips passing between the saw cover and the rotary blade are provided at a lower rear inner portion of the saw cover. A chip discharging device for a portable circular saw, wherein at least one control wall protruding downward is provided in the passage.