JP2012101287A - Automatic length-measuring device for power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic length-measuring device for a power tool which allows a hand-held power tool to easily perform scraping, cutting, or drilling with a required length and depth without an error in scraping, cutting, or drilling work.SOLUTION: Before a drilling, a setting value of a length set value 8 is set, and then a set button 6 is pressed to read the set value, which is indicated on a length set value remainder display 9. Pressing a switch for the power tool causes the power tool to start turning, thus causing a drill attached to the front end of the power tool to advance while forming a hole. As the drill advances, a numerical value indicated on the length set value remainder display 9 decreases. When the indicated numerical value decreases to zero, a match signal is issued, which brings the power tool to a stop.

Description

The present invention is a hand-held power tool that uses a sander to sharpen,
Cutting or cutting a predetermined length by cutting work, using a jigsaw, cutting work, drilling work, drilling work using an anchor drill, excavation work of a post-installed anchor pilot hole, etc. When drilling holes,
By attaching this device to a power tool with one touch,
It becomes an automatic length measuring device. Therefore, set the required length on the setting device,
Read the set value with the set button and switch on the power tool.
The set length operates and the power is turned off at the set value to complete the work.

Work with hand-held power tools is done on a variety of materials. Typical examples are wood, metal, concrete and chemical products.

Handheld power tools are also available in sanders, jigsaws, ordinary drills,
There are various types depending on the application, such as variable speed drills, forward / reverse rotation drills, and vibration drills.

With the length when cutting metal, the length when cutting, and drilling,
Length accuracy is required in various places such as the depth when digging holes.

Patent 4108370 JP 2004-276194 published

By attaching an automatic length measuring device for the electric tool to the electric tool in the cutting work, cutting work, drilling work with a handheld electric tool,
The required length and depth can be easily cut, cut and drilled without error.

The automatic length measuring device for electric tools has an outlet that can be attached to and removed from the electric tool that cuts, cuts, or drills holes, and supplies power to the electric tool. And a length setter and a length set value remaining amount indicator.

The set value of the length setter is read when the set pushbutton is operated, and is displayed on the length setpoint remaining amount display. When the power tool moves to the reference target side, the length setpoint remaining amount When the set value and the moved length are displayed, the match signal is output from the automatic length measuring device for power tools, and the length set value remaining amount indicator displays zero and the outlet The power of
An automatic length measuring device for an electric tool, characterized in that the electric tool is cut and stopped.

While attached to the power tool, means for irradiating light to the reference target, means for receiving the light reflected and returned from the reference target, and time required from irradiation to reception, A means for calculating and storing the length to the reference target and a function for storing the latest data every time the power tool moves to the reference target side, and having the same length as the set value An automatic length measuring device for an electric tool characterized by having a function of outputting a coincidence signal when the actuator is moved and stopping the electric tool.

When cutting, cutting or digging holes, positioning is
Since it can be done with a single touch and is accurate, the work accuracy is improved and the work time is increased.

When the set value is reached, the power is turned off and the machine stops. Therefore, it is possible to cut, cut, or dig a hole with the correct depth, eliminating work errors.

Normal power tool Image of length measurement of automatic length measuring device for electric tools Image of attaching an automatic measuring device for electric tools to an electric tool

DESCRIPTION OF SYMBOLS 1 Electric drill, Electric vibration drill 2 Electric cutter 3 Electric sander 4 Jigsaw 5 Automatic length measuring device for electric tools 6 Set push button 7 Outlet 8 Length setting device 9 Length setting value remaining amount indicator

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Figure 1 shows a normal power tool.
The electric drill and electric drill 1 are electric tools for drilling holes.
The electric cutter 2 is an electric tool for cutting.
The electric sander 3 is a power tool that cuts and sharpens.
The electric jigsaw 4 is an electric tool for cutting.
If these tools are equipped with the automatic length measuring device 5 for power tools, they will all be transformed into power tools with automatic length measuring devices.

Figure 2 shows the principle of length measurement. From the automatic length measuring device 5 for electric tools,
Light is blown up to the temporary target, the time it takes for it to hit the temporary target and return to return is calculated and calculated.

Fig. 3 is an image of the automatic length measuring device 5 for electric tools attached to an electric drill. The figure on the left shows that before drilling, set the length setting value 8 to 333, press the set push button 6 to read the setting value 333,
333 is displayed on the length setting value remaining amount display 9. When the power tool switch is pressed, the power tool starts rotating and is attached to the tip of the power tool.
When the hole is drilled and moves forward, the length setting value remaining amount display 9 decreases in accordance with the progress, and when the display becomes zero, a coincidence signal is output and the motor stops.

Claims (3)

A power tool that cuts linearly or drills a hole, can be attached and removed, and has an outlet for supplying power to the power tool.
An automatic length measuring device for an electric tool, comprising a set push button, a length setting device and a length setting value remaining amount display device on a surface. The set value of the length setting device is read when the set push button is operated,
When the power tool moves to the reference target side, it is displayed on the length set value remaining amount display, and is displayed by subtracting the length set value remaining amount display, and the set value, When the moved lengths match, a match signal is output, the length set value remaining amount indicator displays zero, the outlet is turned off, and the power tool stops. The automatic length measuring device for an electric tool according to claim 1. Means for irradiating light to a reference target in a state attached to the power tool, means for receiving the light reflected and returned from the reference target;
Means for measuring the time from the irradiation until the reception, calculating and storing the length to the reference target, and calculating each time the electric tool moves to the reference target side. Has the function to store the latest data,
The automatic length measuring apparatus for an electric tool according to any one of claims 1.2, which has a function of outputting a coincidence signal when the movement is the same as the set value and stopping the electric tool.