| 摘要 |
Disclosed is a fuse appliance, which comprises a fuse carrier for carrying a fuse and a fuse appliance base. The fuse carrier is arranged, in a manually operable way, in a hollow cavity of the fuse appliance base that is formed by buckling and assembling a shell bottom and a shell cover, so as to remove or insert the fuse. Arranged on the two sides of the fuse appliance base are fixed contacts which come into contact with moving contacts arranged on the fuse carrier, and wiring terminals for electrically connecting the two contacts of the fuse appliance with a main circuit respectively. The fuse appliance further comprises a rotational-linear pulling type operation mechanism formed by a semicircular rotary shaft structure, the semicircular rotary shaft structure comprises two semicircular convex shafts and first and second circular straight grooves that are in mounting fit with each other, so that during the closing operation stage of the fuse appliance, the fuse carrier can perform rotational movement in relation to the fuse appliance base only and cannot perform linear movement; during the opening operation stage of the fuse appliance, the fuse carrier accomplishes an interchange between rotational movement and linear movement at a transition position where the fuse carrier is pulled out of or pushed into the fuse appliance; and during the pull-out or push-in operation stage of the fuse appliance, the fuse carrier can perform linear movement only. |
