Multi-cavity filter with lid structure

Abstract

A multi-cavity filter includes a main body and a lid body. The main body includes a bottom portion and a plurality of sidewalls extending from the bottom portion so as to cooperatively define a plurality of cavities each with a top opening. The lid body covers on the cavities of the main body and is snugly mounted on the main body by screws. The lid body defines a plurality of grooves to improve flexibility.

1 . A multi-cavity filter, comprising:
 a main body, comprising a bottom portion and a plurality of sidewalls extending from the bottom portion so as to cooperatively define a plurality of cavities each have a top opening; and   a lid body, the lid body covering each of the cavities of the main body and snugly mounted on the main body by screws;   wherein the lid body defines a plurality of grooves to improve the flexibility of the lid body.   
     
     
         2 . The multi-cavity filter as claimed in  claim 1 , wherein the lid body defines a plurality of threaded holes along the plurality of grooves. 
     
     
         3 . The multi-cavity filter as claimed in  claim 2 , wherein the lid body is mounted on the main body by screws passing through the plurality of threaded holes and screwed in the corresponding sidewalls. 
     
     
         4 . The multi-cavity filter as claimed in  claim 1 , wherein the plurality of grooves divide the lid body into a plurality of lid segments, each lid segment corresponding to one of the cavities.