JPH038402Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a power tool having a rotary tool cover.

The first conventional rotary tool cover mounting structure
This will be explained using FIG. 2, FIG. 3, and FIG. Figure 1,
In FIG. 2, the power tool 1 includes a rotary tool 7 for cutting a workpiece, a base 6 that serves as a reference surface when cutting the workpiece, a housing and pivotal support for the rotary tool 7, and a base 6 for holding the base 6. The end bracket 3 is provided with a rotary tool cover 4 that removably covers the opening of the rotary tool storage chamber 12 of the end bracket 3.
When cutting a workpiece using this power tool 1,
The chips flow as follows and are stored in the dust collection bag 10. Riding on the flow of air generated by the dust collection fan 16, the chips move along arrows A, B, and the arrows shown in FIGS. 1 and 2.
It flows through the end bracket 3 in directions C and D and is stored in the dust collection bag 10.

The rotary tool cover mounting structure of the power tool 1 of the above-mentioned prior art reduces the overall weight of the power tool 1,
In order to facilitate the replacement of the rotary tool 7, the rotary tool cover 4 is made of a thin material, and the rotary tool cover 4 is attached to the end bracket 3 with a single knob bolt 5.
The structure is such that it can be installed on. The disadvantage of the power tool 1 of the prior art is that when the rotary tool cover 4 is deformed such as warping, the end bracket 3 and the rotary tool cover 4 that cover the opening of the rotary tool storage chamber 12 are not completely in contact with each other. Otherwise, as shown in FIG. 3, chips leak from the gap δ and scatter in the direction of arrow E shown in FIGS. 1 and 3. As a result, chips were scattered on the user's face, reducing operability and reducing the dust collection effect.

The purpose of the present invention is to eliminate the drawbacks of the prior art described above and to improve the operability of this type of power tool.

In this invention, the rotary tool cover is not only attached to the end bracket with only knob bolts, but also has a structure in which a part of the rotary tool cover is pressed against the end bracket by the base, which improves the contact between the end bracket and the rotary tool cover. The shape of the rotary tool cover and base was devised with a focus on perfect operation.

An embodiment of the present invention will be explained using FIGS. 4, 5, and 6. The power rotary tool 1 according to the embodiment of the present invention is as follows:
Except for the protrusion 14 provided on the rotary tool cover 4 and the fitting portion 15 that fits with the protrusion 14 provided on the base 6 and presses the rotary tool cover 4 so as to come into contact with the end bracket 3, it is not conventional. It has the same structure as technology.

In the embodiment of the present invention having the above structure, the rotary tool cover 4 is made of a thin material, and even if some warpage occurs during manufacture or use, the gap δ as shown in FIG. 3 does not occur. This is achieved by fitting the protrusion 14 provided on the rotary tool cover 4 with the fitting portion 15 provided on the base 6, and fixing the rotary tool cover 4 to the end bracket 3 with the knob bolt 5. This is because the concave portion 15 presses it in the direction of arrow F shown in FIG.

As described above, according to the embodiment of the present invention, the operability of the power tool 1 does not deteriorate due to chips flying from the gap between the end bracket 3 and the rotary tool cover 4, and the dust collection device Power tool 1 with
In this case, there will be no reduction in the dust collection effect.

According to the present invention, since the rotary tool cover is provided with a protrusion and the base is provided with a recess that fits into the protrusion, even if the rotary tool cover is slightly warped, the contact between the rotary tool cover and the end bracket is maintained. There are no gaps between the surfaces, and it is possible to prevent a decrease in operability and a decrease in the dust collection effect due to the scattering of chips from the gaps.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional power tool, Fig. 2 is a partially cutaway plan view of the conventional power tool, Fig. 3 is a partial sectional view of the conventional power tool, and Fig. 4 is a side view of the conventional power tool. FIG. 5 is a partial plan view of the base of the embodiment of the invention, and FIG. 6 is a front view of the embodiment of the invention. 1 is a power tool, 2 is a handle, 3 is an end bracket, 4 is a rotary tool cover, 5 is a knob bolt,
6 is the base, 7 is the rotary tool, 8 is the safety cover, 9
is the motor part, 10 is the dust collection bag, 11 is the belt,
12 is a rotary tool storage chamber, 14 is a protrusion, 15 is a recess, and 16 is a dust collection fan.

Claims (1)

[Scope of utility model registration request] An end bracket including a rotary tool and a rotary tool storage chamber for storing the rotary tool, a rotary tool cover that covers an opening of the rotary tool storage chamber, and a reference surface attached to the bottom surface of the end bracket for machining a workpiece. A power tool having a base, characterized in that a protrusion is provided at the lower part of the rotary tool cover, and a recess is provided in the base into which the protrusion fits and regulates the position of the rotary tool cover. Rotary tool cover mounting structure for power tools.