ELECTRICALLY-DRIVEN WORKING APPARATUS

Title:

ELECTRICALLY-DRIVEN WORKING APPARATUS

Document Type and Number:

Japanese Patent JP2017063557

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To prevent a high current from running through a switching element for driving and drive a motor even if the switching element for driving is switched to an ON state when a switching element for braking has a short circuit fault.SOLUTION: The electrically-driven working apparatus includes: a motor 30 operating by receiving power supply from a power source 7; a switching element Q3 generating a braking force at the motor at an ON state; and a breaking element 32 connected in series to the switching element. The breaking element shuts down a connection path to the switching element when an electric current or a temperature running through or in the connection path rises to a specified value or higher, and a series circuit of the switching element and the breaking element is in parallel to the motor.SELECTED DRAWING: Figure 2

Inventors:

NAKAMOTO AKIHIRO

Application Number:

JP2015188010A

Publication Date:

March 30, 2017

Filing Date:

September 25, 2015

Export Citation:

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