| 摘要 |
The present invention provides an EDM filter which enhances coupling force between components. The EDM filter includes an inner perforated casing (20) which supports an inner filter unit, an outer perforated casing (24) which supports an outer filter unit, and upper and lower covers (30) and (32) which are adhered to the inner and outer filter units. Bent ends and support ring parts are formed in the upper and lower covers. The EDM filter further includes outer coupling parts (40) which integrally couple the upper and lower covers to the outer perforated casing. Each outer coupling part includes a first coupling end (42) which extends from each of the opposite open ends of the outer perforated casing, and a second coupling end (44) which is bent from the corresponding bent end of the upper and lower covers. The first and second coupling ends are integrally coupled to each other.
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