JP2002273721A - Borer for gypsum board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a borer capable of boring a high finish hole on a gypsum board to which wall paper or cloth is stuck. SOLUTION: A cylindrical cutter edge 6 is fitted to a tip of a hone 4a of an ultrasonic vibrator 4 built in a housing 2 of a mechanical part. By pushing an electric source switch 9 arranged to a grip 3, electricity is applied to a supersonic oscillator 5, and the supersonic vibrator 4 and the cylindrical cutter edge 6 are vibrated at a high frequency. When the cylindrical cutter edge 6 is pushed onto the gypsum board, the cylindrical cutter edge 6 passes through and a circular hole is cut through. Since the cutter edge is vibrated at a high speed front and rear by a small amplitude, in the case where a cloth-stuck gypsum board is bored, it comes to be cleary finished with neither peeling off nor tearing the cloth. Further, an amount of generated dust is little and noise is scarecely generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gypsum board drilling apparatus, and more particularly to a gypsum board drilling apparatus capable of obtaining a beautiful finish.

[0002]

Conventionally, an electric core drill, a hole saw, a square hole cutter, or the like has been used for drilling a gypsum board. However, any of them is scattered with gypsum dust and contaminates the surroundings and generates a large amount of noise. Things. Also, in the case of interior renovation work of an existing house, etc., when drilling a hole for mounting a lighting fixture or an outlet box on a gypsum board with wall cloth or wallpaper, the blade will cut the wall cloth around the hole. The tearing and peeling often requires labor and material costs for repairs after the fact.

[0003] Therefore, there is a technical problem to be solved in order to reduce the generation of dust and noise, and to make it possible to drill a wall cloth or wallpaper stuck on a gypsum board without damaging it. An object of the present invention is to solve the above problems.

[0004]

DISCLOSURE OF THE INVENTION The present invention proposes to achieve the above-mentioned object, in which an ultrasonic vibrator is built in a hand-held housing, and a cylindrical cutter blade is mounted on a horn of the ultrasonic vibrator. Or attach a square cylindrical cutter blade, project the cylindrical cutter blade or square cylindrical cutter blade from the end of the housing, press the cylindrical cutter blade or square cylindrical cutter blade against the surface of the gypsum board, and The present invention provides a gypsum board drilling device configured to cut out a round hole or a square hole in a gypsum board by energizing the gypsum board.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1 shows a gypsum board drilling machine 1
2 is a mechanism housing, and 3 is a grip. The mechanism housing 2 has an ultrasonic oscillator 4 and an ultrasonic oscillator 5 built therein, and a cylindrical cutter blade 6 is attached to a tip of a trapezoidal conical horn 4a of the ultrasonic oscillator 4.

A power supply circuit 7 is built in the grip 3, and a power cord 8 is pulled out from an end of the grip 3. When a power switch 9 arranged at the base of the grip 3 is pressed, the ultrasonic oscillator 5 is turned on. When energized, high-frequency electric energy is supplied from the ultrasonic oscillator 5 to the ultrasonic vibrator 4, and the ultrasonic vibrator 4 mechanically vibrates at the same frequency as the supplied power, and the horn 4
Ultrasonic vibration is transmitted to a and the cylindrical cutter blade 6 to vibrate at high speed with a small amplitude.

When the cylindrical cutter blade 6 is pressed against the gypsum board and the power switch 9 is pressed, the cylindrical cutter blade 6 vibrating at a high speed cuts into the gypsum board, and a circular hole is cut through the gypsum board. Since the cylindrical cutter blade 6 vibrates at a high speed with a minute amplitude, the amount of dust generated when cutting the gypsum board is small, and it is hardly scattered around. Also, since the amplitude of the cylindrical cutter blade 6 is very small and vibrates at high speed back and forth toward the target surface, unlike a conventional core drill that rotates the cutter blade when drilling a hole in a gypsum plaster board, the wall cross There is no peeling or tearing, and the finish of the cut surface is beautiful. In addition, there is an advantage that the noise at the time of drilling is small and the influence of the noise on the work site and its surroundings is small.

The gypsum board drilling device 11 shown in FIG.
The shape of the horn 12a of the ultrasonic vibrator 12 is a square tube, and a square tube cutter blade 13 is attached to the tip of the square tube horn 12a.
It is designed to cut a square hole such as an outlet box hole, and the other configuration is the same as that of the gypsum board drilling device 1 of FIG.

In the above example, the cylindrical cutter blade or the rectangular cylindrical cutter blade is driven by one ultrasonic vibrator, but the mass of the ultrasonic vibrator and its horn is reduced. In order to arrange a plurality of ultrasonic transducers along the trailing edge of a cylindrical cutter blade or a square tubular cutter blade,
A plurality of ultrasonic transducers may drive a single cylindrical cutter blade or a rectangular cylindrical cutter blade. Also,
The power supply circuit and the ultrasonic transmitter are separate from the gypsum board drilling device main body, and various modifications are possible within the technical scope of the present invention, such as reducing the size and weight of the gypsum board drilling device main body. Of course, the invention extends to those modifications.

[0010]

As described above, the gypsum board drilling device of the present invention is configured to cut out a circular hole or square hole by driving the cutter blade by the ultrasonic vibrator.
Since the amplitude of the cutter blade is small, the amount of dust generated when cutting the gypsum board is small, and a highly accurate finish can be obtained. In addition, workability is good because noise and clipping resistance are small. Further, when a hole is made in a gypsum board to which wallpaper or a wall cloth is stuck, the wall cloth or the like is not peeled or torn, so that time and labor are not required for repairing the wall cloth and the like.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a side view of a gypsum board drilling device, and (b) is a front view.

FIG. 2 shows an embodiment of the present invention, wherein (a) is a side view of a gypsum board drilling device, and (b) is a front view.

[Explanation of symbols]

 1 Gypsum board drilling machine 2 Mechanism housing 3 Grip 4 Ultrasonic transducer 4a Horn 5 Ultrasonic transmitter 6 Cylindrical cutter blade 7 Power supply circuit 8 Power cord 9 Power switch 11 Gypsum board drilling equipment 12 Ultrasonic transducer 12a Horn 13 square cylindrical cutter blade

Claims (1)

[Claims] An ultrasonic vibrator is built in a hand-held housing, and a cylindrical cutter blade or a square cylindrical cutter blade is attached to a horn of the ultrasonic vibrator. By protruding the cutter blade, pressing the cylindrical cutter blade or square cylindrical cutter blade against the surface of the gypsum board and energizing the ultrasonic vibrator,
A gypsum board drilling device configured such that round or square holes are cut out of the gypsum board.