Electric tool

A technology of electric tools and electric current, which is applied in the direction of motor tools, manufacturing tools, wrench, etc., can solve the problems of drilling operation confusion, can not clearly understand whether the electronic clutch will work, etc., to prolong life, avoid overload, operate Simple and convenient effect

Active Publication Date: 2011-01-12
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operator cannot clearly understand whether the electronic clutch of the power tool will work, thereby causing confusion to the drilling operation

Method used

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  • Electric tool
  • Electric tool
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Examples

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Embodiment Construction

[0038] like figure 1 The electric screwdriver 2 shown includes: a casing 4, a motor 6 housed in the casing 4, a power supply 18 that provides current for the motor 6, and a working head 8 driven by the motor 6 to rotate, located in the casing 4 according to the working head The state change of 8 automatically reduces the control assembly 22 of the motor 6 speed and the control indicating device 50 which is arranged on the casing 4 and is electrically connected to the control assembly 22 . The electric screwdriver 2 also includes a switch 20 to control whether there is current passing through the motor 6 . The motor 6 drives the working head 8 to rotate to drill the screw 14 into the wooden board 16 . The motor 6 is connected with the clutch system 12 and the collet 10 through a mechanical spring to the working head 8 .

[0039] In this embodiment, the power source 18 is a DC power source, or a rechargeable battery, which can supply DC power to the motor 6 when the switch 20 ...

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PUM

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Abstract

The invention relates to an electric tool which comprises a casing, a motor, a power source, a working head, a control assembly and a control indicating device, wherein the motor is contained in the casing; the power source provides current for the motor; the working head is driven by the motor to rotate; the control assembly is positioned in the casing and automatically lowers the rotation speed of the motor according to the state change of the working head; the control indicating device is arranged on the casing and is electrically connected with the control assembly; and the control indicating device comprises an executive component capable of enabling the control assembly to be at least in an active first position and an inactive second position. Compared with the prior art, the invention enables an operator to definitely know the running state of the torsion control device of the electric tool to avoid the motor overload, thereby prolonging the service life of the motor and enabling the operation to be simple and convenient.

Description

technical field [0001] The invention relates to an electric tool, in particular to an electric tool with automatic torque control function. Background technique [0002] Existing electric tools, such as electric screwdrivers, provide electric current through a loaded power supply to drive the motor to rotate, so that the working head rotates to drill the screw into the wooden board. Different types of screws have different body diameters, or different head shapes, so that they drill into the same board differently. In addition, different wood boards have different hardness due to different materials, so the situation of the same screw drilling into wood boards of different materials is not the same. Usually, during the use of an electric screwdriver, the user needs to drill the screw until the head is close to the surface of the workpiece. In this way, the user needs to pay attention to the drilling process very carefully to control the motor to stop when the head of the sc...

Claims

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Application Information

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IPC IPC(8): B25B21/00B25B23/147
Inventor 何明明
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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