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Electric working machine

A working machine, electric technology, applied in the direction of harvesters, cutting tools, manufacturing tools, etc.

Active Publication Date: 2014-10-22
HITACHI KOKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If electricity is used as the power source for the bush cutter, it is characterized by being quiet and exhaust-free, and has excellent running costs

Method used

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  • Electric working machine
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Examples

Experimental program
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Effect test

no. 1 example

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals refer to the same elements, and a detailed description thereof will not be repeated. In addition, in this specification, front and rear, left and right, and up and down directions will be described based on the directions shown in the drawings.

[0037] Such as figure 1 As shown, an electric brush cutter 1 as an example of an electric working machine includes: an operation unit 10 to which a battery pack 2 is attached; a retraction rod fixed to near the front end of the operation unit 10; a drive unit 151 to which to the end of the rod; and a handle unit 41 fixed to the vicinity of the center of the rod in the front-rear direction. In the current embodiment, the retractable rod includes a fixed tube 40 and a movable tube 80 connected to a front side of the fixed tube 40 and adapted to move relative to the fixed ...

no. 2 example

[0077] In the following, reference will be made to Figure 11 A circuit diagram according to a second embodiment of the present invention is described. The controller 301 according to the second embodiment is installed in such as image 3 On the circuit board 13 shown, the configuration or components other than the circuits mounted on the circuit board 13 are exactly the same as those described in the first embodiment. The controller 301 includes the same switch 21, main power switch circuit 214, main power automatic stop circuit 203, constant voltage circuit 207, battery voltage detection circuit 235, trigger detection circuit 240, and microcomputer 211 as in the first embodiment, and Duplicate descriptions about its internal configuration or behavior will therefore be omitted. The output stop circuit 343 is mainly in accordance with the output stop circuit 243 of the first embodiment (see Figure 7 ) operates in the same manner that the output stop circuit 343 receives a ...

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PUM

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Abstract

An electric working machine (1) including: a motor; a control unit configured to control rotation of the motor; a fixed part (3) provided with a handle having a grip portion (43); a movable part (4) held by the fixed part (3) and is configured to be extendible by sliding relative to the fixed part (3); and a cutting blade (155) provided to a end portion of the movable part (4) and is configured to be driven by the motor; characterized in that the electric working machine (1) further includes a detection unit which is connected to the control unit and is configured to detect whether or not the movable part (4) is positioned at a predetermined extended position relative to the fixed part (3).

Description

technical field [0001] Aspects of the present invention relate to an electric working machine driven by a motor. Background technique [0002] As a working machine for cutting grass or plants, there is known a bush cutter in which a rotary blade is driven. While brush cutters using an internal combustion engine as a power source are generally used, recently electric brush cutters are actually and widely used due to improved performance of rechargeable batteries. If electricity is used as the power source for the bush cutter, it is characterized by being quiet and exhaust-free, and has excellent running costs. Such an electric bush cutter is disclosed in Patent Document 1, in which the number of revolutions of the motor can be adjusted. will refer to Figure 17 The construction of such an electric bush cutter according to the prior art is described. In the electric brush cutter 1001 driven by a battery pack 1002, a motor unit 1004 is attached to the end of a tubular rod 10...

Claims

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Application Information

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IPC IPC(8): B25F3/00B25F5/02A01G3/06
CPCA01G3/062B25F3/00B25F5/02A01D34/90Y10T83/855Y10T83/541A01D34/73A01D34/828A01D34/902
Inventor 中野恭嗣堀江由季船桥一彦丰岛祐一小泽广身富田博久
Owner HITACHI KOKI CO LTD
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