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Tools equipped with switches for operating electrical components

A technology of electrical components and switches, applied in the field of tools, can solve the problems of large-scale switches and multi-strokes

Active Publication Date: 2019-09-10
MAX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a switch composed of a slide-type variable resistor, the switch operation part called a trigger requires a large stroke, and the size of the switch is increased.

Method used

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  • Tools equipped with switches for operating electrical components
  • Tools equipped with switches for operating electrical components
  • Tools equipped with switches for operating electrical components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Hereinafter, an electric power tool as an example of an embodiment of the tool according to the present invention will be described with reference to the drawings and each drawing.

[0033]

[0034] figure 1 is an overall configuration diagram showing an example of the electric power tool according to the first embodiment, figure 2 It is a block diagram showing an example of the circuit configuration of the electric tool according to this embodiment.

[0035] The electric power tool 1A of the first embodiment includes: a switch 2 for operating a motor M as an electric component; a control unit 3 for controlling the motor M in response to the operation of the switch 2; and a control circuit for activating the control unit 3 in accordance with the operation of the switch 2. 4; and a power supply unit 5 for supplying power to the motor M and the control unit 3 and the like.

[0036] The electric power tool 1A of this embodiment is, for example, an impact driver 10A su...

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PUM

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Abstract

The present invention provides a tool provided with a switch for operating an electric component, wherein a load sensor is used and a control unit can be activated and the electric component can be controlled by a set of switches. The electric tool has a switch (2A) for controlling electrical components such as a motor. The switch (2A) has a trigger (20A) for operation and a load sensor (21A) that receives a pressing force through the trigger (20A). The load sensor ( 21A) includes: a pressure-sensitive conductive elastic member (210A) in which conductive particles are dispersed in a non-conductive elastic body, the conductivity of the pressure-sensitive conductive elastic member changes according to a load; and a substrate ( 211A), forming a variable resistor whose resistance value changes according to the change in conductivity of the pressure-sensitive conductive elastic member (210A).

Description

technical field [0001] The present invention relates to a tool provided with a switch for operating an electric component. Background technique [0002] There is known a technique in which an electric tool provided with a switch for operating electric components such as a motor includes a slide-type varistor in order to control the rotational speed of the motor. In a switch composed of a slide-type variable resistor, a switch operation portion called a trigger requires a large stroke, and the switch is enlarged. [0003] Therefore, a technique has been proposed in which a load sensor that converts a load into a voltage using a semiconductor, a strain gauge, or the like is applied to a switch of an electric tool (for example, refer to Patent Document 1). [0004] In addition, in order to suppress power consumption of the battery, electric power tools have been proposed to include an automatic power-off function that automatically stops supply of power from the battery when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/02B25B21/02B25F5/00
CPCH01H13/02B25B21/02B25F5/00H01H2231/048G01L1/22B25F5/001
Inventor 筒井智秀芹田智彦
Owner MAX CO LTD