JPS59134605A - Portable motor-driven drilling machine - Google Patents

Abstract

PURPOSE:To have precision drilling of a hole perpendicular in a plate to be processed, by installing a leveler on at least one of the body and handle of a portable motor-driven drilling machine and thereby setting a drill perpendicularly to said plate accurately. CONSTITUTION:A chuck 2 is installed on one side of the body 1 of a portable motor-driven drilling machine, wherein a drill 3 is grasped by said chuck 2, and a handle 4 is furnished on the other side of the body 1 and equipped with a switch 5. Levelers 6, 7 are installed on that surface of handle 4 perpendicular to the drill 3 and that surface of body 1 parallel to the dril 3. According to this arrangement, levelers 6, 7 can set the drill 3 either in the vertical or horizontal orientation, so that the drill 3 can be fronted to a plate to be processed 9 placed either horizontally or vertically in accurate perpendicularity. Thus a hole can be bored in the plate 9 in accurate perpendicularity.

Description

[Detailed description of the invention] This invention relates to a portable electric drill.

FIG. 1 is a diagram showing a conventional portable electric drill. In the figure, l is the main body, 2 is a chuck provided on one side of the main body 1, 3 is a drill attached to the chuck 2, 4 is a handle provided on the other side of the main body 1, and 5 is a switch provided on the handle 4. It is.

In this portable electric drill, when the user grasps the handle 4 and presses the switch 5, a motor (not shown) built into the main body 1 rotates, and the drill 3 connected to the motor rotates.
When the switch 5 is pressed again, the motor stops and the rotation of the drill 3 stops.

By the way, when using such a portable electric drill to make a hole in a perpendicular direction in a workpiece plate, it is possible to make a hole in a perpendicular direction relatively accurately in the left and right directions when viewed from the operator, but the work It is not possible for a person to form a hole that is exactly perpendicular to the vertical direction, and even an experienced person will end up with an inclination of about 5 degrees.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a portable electric drill that can accurately form a hole in a perpendicular direction in a workpiece plate.

In order to achieve this object, in the present invention, a level is attached to at least one of the main body and the handle.

FIG. 2 is a diagram showing a portable electric drill according to the present invention. In the figure, 6 is a level attached to the surface of the handle 4 perpendicular to the drill 3, 7 is a level attached to the surface of the main body I parallel to the drill 3, and 8 is a workpiece plate installed horizontally. .

In this portable electric drill, since the direction of the drill 3 can be set vertically using the level 6, the drill 3 becomes perpendicular to the workpiece plate 8, and the hole is accurately perpendicular to the workpiece plate 8. can be provided. Furthermore, as shown in FIG. 3, even when making a hole in the workpiece plate 9 installed vertically, the direction of the drill 3 can be made horizontal by the leveler 7. 9, it is possible to provide a hole in the workpiece plate 9 in an exactly perpendicular direction.

4(a) to 6 (al is a plan view showing a level, respectively, and FIGS. 4(b) to 6(b) are respectively front sectional views. In the figures, 10 is a base; 11 is a transparent plate attached to the base 10; 12 is a liquid sealed in the space formed by the base 10 and the transparent plate 11;
13 is a bubble, and 14 is a level line provided on the transparent plate 11.

In the above-described embodiment, the levels 6 and 7 are attached to the handle 41 body 1, respectively, but the level may be attached only to either one of the handle 4° body 1. In the above-described embodiment, a level 6 is installed on a plane perpendicular to and parallel to the drill 3.
7, but if the plate to be machined is installed at an inclination, by determining the angle between the surface on which the level is attached and the drill according to the angle of inclination, the plate to be machined will be tilted. Even if the workpiece is installed in a horizontal position, it is possible to make a hole in the workpiece plate accurately at right angles.

As explained above, in the portable electric drill according to the present invention, even an unskilled person can accurately form a hole in a perpendicular direction on a workpiece plate, and even an expert can easily perform the hole forming work. It is possible to do so. Furthermore, since it is only necessary to attach a level, the increase in manufacturing costs is extremely small. Therefore, the practical effect is great.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional portable electric drill, FIG. 2 is a diagram showing a portable electric drill according to the present invention, and FIG. 3 is a diagram showing a portable electric drill according to the present invention.
The operation explanatory diagrams of the portable electric drill shown in the figure and FIGS. 4 to 6 each show a level. ■...Body 2...Chuck 3...Drill 4...Handle 6.7...Level 8.9...Patent attorney representing workpiece plate Junnosuke Nakamura 3

Claims (1)

[Claims] A portable electric drill characterized by having a level attached to at least one of the main body and the handle.