POWER TOOL

Provided is a power tool with which it is possible to perform braking in which deterioration and damage of elements are suppressed. In a brake control, a computation unit 21: performs switching control of a combination of any of upper-arm-side Q1-Q3 switching elements and any of lower-arm-side switc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YOSHINARI Takuya, TANIMOTO Hideyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR DRESSING OR CONDITIONING OF ABRADING SURFACES ELECTRICITY FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERATION GRINDING HAND TOOLS MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING MANIPULATORS PERFORMING OPERATIONS POLISHING PORTABLE POWER-DRIVEN TOOLS TRANSPORTING
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Beschreibung
Zusammenfassung:	Provided is a power tool with which it is possible to perform braking in which deterioration and damage of elements are suppressed. In a brake control, a computation unit 21: performs switching control of a combination of any of upper-arm-side Q1-Q3 switching elements and any of lower-arm-side switching elements Q4-Q6 while sequentially switching the elements; and causes a current to flow in a closed loop (a closed loop in the same direction as during driving of the power tool) in order through any of the upper-arm-side Q1-Q3 switching elements, a stator coil 6e, any of the lower-arm-side switching elements Q4-Q6, and a first diode bridge 15.