Motor and angle grinder

The invention discloses a motor and an angle grinder, and belongs to the technical field of electric tools. The motor comprises a stator, a rotor and a driving shaft, wherein at least part of the rotor is arranged in the stator in a penetrating mode, the driving shaft is arranged in the rotor in a p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NI MUYANG, FUKINUKI MASATOSHI, ZHAO XIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DRESSING OR CONDITIONING OF ABRADING SURFACES DYNAMO-ELECTRIC MACHINES ELECTRICITY FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERATION GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS POLISHING TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention discloses a motor and an angle grinder, and belongs to the technical field of electric tools. The motor comprises a stator, a rotor and a driving shaft, wherein at least part of the rotor is arranged in the stator in a penetrating mode, the driving shaft is arranged in the rotor in a penetrating mode, a first air channel for circulation of cooling air is formed in the driving shaft and comprises an air inlet and an air outlet, the air inlet is formed in the rear end of the driving shaft, and the air outlet is formed in the side wall of the front end of the driving shaft. According to the invention, a first air channel is arranged in a driving shaft of a motor, and when a fan at an air outlet rotates, negative pressure is generated at the air outlet of the first air channel, so that cooling air flows from the air inlet of the first air channel to the air outlet of the first air channel so as to cool the driving shaft, the rotor connected with the driving shaft is further cooled, the heat dissipat