Case for shielding electronic devices

• US 4,628,412 A
• Filed: 12/12/1984
• Issued: 12/09/1986
• Est. Priority Date: 12/12/1983
• Status: Expired due to Term

• Current Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Nigorikawa, Shigeru
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Ginsburg, Morris
• Application Number:
  US06/680,934
• Time in Patent Office: 727 Days
• Field of Search: 174/35 R, 361/424, 330/68, 330/67, 334/85
• US Class Current: 361/816
• CPC Class Codes: H05K 9/006 specially adapted for signal processing applications, e.g. CATV, tuner, antennas amplifier
• CPC Class Codes: Y10S 174/34 PCB in box or housing

Abstract

A case for an electronic device includes a frame of metal having an opening, a cover of metal covering the opening, and a circuit board fixedly mounted in the frame and having a hole defined therein. The frame has a portion bent as a shield plate extending through the hole toward an inner surface of the cover. The end portion of the shield plate has a distal end bent as a contact leg held against the inner surface of the cover. The contact leg has a recess, and the circuit board includes a projecting tongue extending into the hole in alignment with the recess and supporting a ground pattern soldered to the shield plate.

Claims

1. A case housing an electronic device including a printed circuit board, comprising:

a metal frame having an opening on one side;

a metal cover covering said opening;

said circuit board being fixedly mounted in said frame spaced apart from said cover and having at least a hole defined therein;

a shield plate portion extending through said hole toward an inner surface of said cover and having a distal end thereof provided with a contact leg bent and held in contact against the inner surface of said cover;

said distal end further defining a recess adjacent said contact leg extending to one side of said shield plate portion, said circuit board including a projecting tongue defining a part of said hole extending proximate said one side of said shield plate portion in alignment with said recess;

whereby a solder connection can be readily formed between said projecting tongue and said one side of said shield plate portion in alignment with said recess, said recess allowing for solder not to be placed between said contact leg and said inner surface of said cover.

2. A case housing an electronic device according to claim 1, wherein said circuit board has a ground pattern formed on said projecting tongue such that said ground pattern can be soldered to said one side of said shield plate portion.

3. A case housing an electronic device according to claim 2, wherein said ground pattern is soldered to said shield plate on both sides thereof below said recess.

4. A case housing an electronic device according to claim 1 wherein said circuit board is provided with two holes and said case has two corresponding shield plate portions inserted through said holes.

5. A case housing an electronic device according to claim 1 wherein said distal end of said shield plate has two contact legs formed thereon with said recess provided centrally between said contact legs, and said projecting tongue is disposed centrally of said hole.