EXPLOSION-RESISTANT FLAME-RETARDANT VARISTOR AND AUTOMATIC PRODUCTION METHOD THEREFOR

摘要

An explosion-resistant flame-retardant varistor, and an automatic production method therefor, relating to the technical field of varistors. The varistor comprises a varistor main body (1) and an explosion-resistant flame-retardant housing provided at an outer portion of the varistor main body (1). The housing comprises two identical housing units (2) engaging with each other by means of a fastening structure. The two housing units (2) are combined to form a cavity having an opening. The varistor main body (1) is located in the cavity, and is fixedly held by the two housing units (2). Two pins (11) of the varistor main body (1) extend outwards from a joint between the two housing units (2). A gap between the varistor main body (1) and the two housing units (2) is filled with an insulator. The insulator enters the cavity from an opening of the cavity. A sealing member for sealing the opening of the cavity is provided on the housing. The two housing units (2) of the explosion-resistant flame-retardant varistor are configured to be the same shape, thereby facilitating injection molding and material management. Only one mold needs to be designed, thereby reducing costs of diesinking. The fastening structure is used in the assembly of the housing, thereby facilitating assembly.