JPH0647683Y2 - Portable dust collector Dust collecting mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention relates to a dust collecting mechanism in a portable dust collecting circular saw.

[Background of the invention]

A conventional dust collecting circular saw is shown in FIG. When the thickness of the cutting material is thin, the adjusting nut 7 is loosened, the link 6 fixed to the base 5 is moved, the base 5 is set at the position shown by the broken line in the figure, and the cutting work is performed. When the cutting operation is performed in this state, the cutting dust is scattered from the triangular gap formed between the upper surface of the base 5 and the bottom side of the gear cover 2 and the saw cover 3 which cover substantially the upper half circumference of the saw blade 8 to collect the dust. There was a drawback that the dust performance was lowered.

[Purpose of device]

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a dust collecting circular saw with high dust collecting efficiency.

[Summary of the Invention] In order to prevent the cutting dust from scattering through the triangular gap generated when adjusting the depth of cut, a slide cover having a rotation fulcrum is provided at the front part in the cutting direction of the gear cover. The cover is pressed toward the upper surface of the base in conjunction with the cut adjustment of the base so that the triangular gap can be always closed.

[Example of device]

 An embodiment of the present invention is shown in FIGS.

A saw blade 8 is fixed to an output shaft (not shown above) to which power is transmitted from a motor built in the housing via a gear or the like.

The upper half of the saw blade 8 is covered with a gear cover 2 and a saw cover 3 as shown in FIG. 1, and the gear cover 2 and the saw cover 3 have front surfaces of the saw blade 8 and the saw cover 3 as shown in FIG. It covers the back of each. The cutting dust passes through a dust guide groove of a conventionally well-known structure formed in the gear cover 2, and the dust collecting case 1 provided on the side opposite to the circular saw blade of the gear cover 2.
Accumulated in. The slide cover 9 is fitted to a rotation fulcrum 9a provided in the front part of the gear cover 2, and is constantly pressed by the spring 10 against the upper surface of the base 5.

When the adjustment nut 7 is loosened and the cut adjustment is performed, the slide cover 9 is interlocked with the movement of the base 5 as shown in FIG.
Moves toward the upper surface of the base 5, so that the slide cover 9 closes the triangular gap formed between the upper surface of the base 5 and the bottom sides of the gear cover 2 and the saw cover 3. As a result, the cutting dust does not scatter, and the dust can be collected efficiently.

[Effect of device]

According to the present invention, a slide cover having a rotation fulcrum at the front of the gear cover and constantly pressed toward the upper surface of the base is provided, and the slide cover is moved in association with the opening / closing operation of the base. Therefore, it is possible to prevent the cutting dust from scattering from the triangular gap formed between the upper surface of the base and the bottom sides of the gear cover and the saw cover during the cutting adjustment.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a dust collecting circle equipped with the dust collecting mechanism of the present invention, FIG. 2 is an enlarged front view showing a main part of the dust collecting mechanism of the present invention, and FIG. 3 is FIG. FIG. 4 is a bottom view of FIG. 4, FIG. 4 is an enlarged front view of FIG.
The figure is a front view showing this example of a conventional dust collecting circle. 1 is a dust collecting case, 2 is a gear cover, 3 is a saw cover,
4 is a safety cover, 5 is a base, 6 is a link, 7 is an adjusting nut, 8 is a saw blade, 9 is a slide cover, and 10 is a spring.

Claims (1)

[Scope of utility model registration request] 1. A dust guide provided with a saw blade driven by an electric motor, a gear cover and a saw cover for covering at least the upper half of the saw blade, and a base for setting a cut, and cutting dust provided on the gear cover. In a portable dust collecting circular saw that is collected through a groove, a slide cover that has a rotation fulcrum at a front portion in the cutting direction of the gear cover and is constantly pressed toward the upper surface of the base is provided, and a cut amount is provided. The dust collecting mechanism for a portable dust collecting circle, wherein a part of the triangular gap formed between the upper surface of the base and the bottom side of the gear cover and the saw cover is adjusted by the slide cover when the gear is adjusted to be small. .