Automatic mask for welder

The utility model relates to an automatic mask for welders, an automatic control mechanism is arranged on a mask body (1), a transmission part (6) is fixed on a light filtering (3), a gear (7) is engaged with the transmission part (6) and a gear (8), the gear (8) is fixed on a worm gear (9), and the...

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Bibliographische Detailangaben
Hauptverfasser:	LIU ZEYIN, XIAO MINGXIANG
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	The utility model relates to an automatic mask for welders, an automatic control mechanism is arranged on a mask body (1), a transmission part (6) is fixed on a light filtering (3), a gear (7) is engaged with the transmission part (6) and a gear (8), the gear (8) is fixed on a worm gear (9), and the worm gear (9) is fixed on the mask body; a worm screw (10) is driven by a motor (11), the gear (8) is taken as the support point of a lever by a transmission lever (12), one end is connected with the gear (7), and the other end is connected with an electromagnetic switch (13); a travel switch (15) is fixed on the mask body, the travel switch, and the motor and the electromagnetic switch are respectively connected with a control circuit, a control circuit and a signal detector; the utility model can be fixed on a head sleeve and is suitable for an aerial work.