Shield structure for electronic circuit parts
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMasaaki Okada, Hitoshi Matsudaira
Life of this patent
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Abstract
The invention provides a shield structure that allows an easy installment of a shield case on a circuit board with more strength and firmness even if the shield case is warped or distorted. The proposed shield case includes a frame member consisting of four sidewalls and a cover member covering a farther end of the frame member from the circuit board. The frame member comprises a supporting member for sustaining the frame member on the circuit board and end faces confronting the circuit board. The supporting member comprises three projections protruding from the end face toward the circuit board.
Claims8
A shield structure for electronic circuit parts comprises a circuit board on which a plurality of electronic circuit parts are disposed and a shield case which is installed on said circuit board to enclose and shield specific electronic circuit parts among said plurality of electronic circuit parts;
- wherein said shield case comprises a frame member including four sidewalls and a cover member covering the farther end of the frame member from said circuit board;
- said frame member includes a supporting member for sustaining said frame member on said circuit board and an end face confronting said circuit board;
- and said supporting member consists of three projections protruding from said end face toward said circuit board.
A shield structure for electronic circuit parts comprises a circuit board on which a plurality of electronic circuit parts are disposed, and a shield case which is installed on said circuit board to enclose and shield specific electronic circuit parts among said plurality of electronic circuit parts;
- wherein said shield case is provided with a frame member including first and second sidewalls confronting each other, third and fourth sidewalls confronting each other and a cover member covering the farther end of the frame member from said circuit board;
- said first sidewall is provided with an extension extending across said circuit board in the direction of thickness thereof and two projections, with each one of the two projections being placed on an opposite side of the extension;
- said second sidewall is provided with two extensions extending across said circuit board in the direction of thickness thereof and a projection placed between said two extensions;
- and said third and fourth sidewalls are provided with end faces confronting said circuit board, each of said projections protruding to said circuit board for supporting said shield case.
Dependencies are inferred from the claim text.