High voltage fuse having ring separation prevention structure
There is disclosed a high voltage fuse having a ring separation prevention structure comprising a housing comprising a first housing body and a second housing body which are coupled to each other and formed in a cylindrical shape; a fuse element disposed in the housing; a pair of connectors which are project from both ends of the housing and connected to the fuse element; and a pair of rings which are insertedly coupled to end circumferences of the housing and heat-sealed at multiple locations.
1. A high voltage fuse having a ring separation prevention structure comprising:
a housing comprising a first housing body and a second housing body which are coupled to each other and formed in a cylindrical shape;
a fuse element disposed in the housing;
a pair of connectors which are project from both ends of the housing and connected to the fuse element; and
a pair of rings which are insertedly coupled to end circumferences of the housing and heat-sealed at multiple locations,
wherein
heat-sealing grooves for the heat-sealing are formed between multiple locations of the end circumferences of the housing and inner circumferences of the respective rings,
a plurality of guide ribs extends from the multiple locations of the end circumferences of the housing in both directions,
the plurality of the guide ribs slip-contacts with the inner circumferences of the rings and guide the pair of the rings to be coupled to both end circumferences of the housing,
the plurality of the guide ribs is formed in the heat-sealing grooves,
an outer surface of each guide rib has a first incline which makes a first acute angle with an outer circumferential line of the housing,
each heat-sealing groove is formed between the first incline and the inner circumferential surface of each ring,
an inner circumference of each ring has a second incline which gradually widens from a predetermined location of the inner circumference to an axial outer end of the inner circumference, and
the heat-sealing grooves are formed between the first incline and the second incline.
2. The high voltage fuse having the ring separation prevention structure of claim 1 , wherein the second incline makes a second acute angle with an outer circumferential line of the housing, and
the second acute angle is more gentle than the first acute angle.
3. The high voltage fuse having the ring separation prevention structure of claim 1 , wherein predetermined roughness is formed in the first and second inclines.