Shielding panel

• US 5,679,923 A
• Filed: 02/17/1995
• Issued: 10/21/1997
• Est. Priority Date: 02/17/1995
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: AST Research, Inc. (Samsung Electronics Co. Ltd.)
• Inventors: Le, Bao Gia
• Primary Examiner(s): Ledynh, Bot L.
• Application Number:
  US08/391,700
• Time in Patent Office: 977 Days
• Field of Search: 49/492.1, 49/489.1, 49/503, 49/483.1, 49/495.1, 49/496.1, 174/35 GC, 174/35 C, 174/35 R, 361/638, 361/649, 361/769, 361/787, 361/800, 361/816, 361/818, 257/659, 24/293-295, 439/816-826, 439/907-908, 439/759-761
• US Class Current: 174/372
• CPC Class Codes: G06F 1/182 with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
• CPC Class Codes: G06F 1/184 Mounting of motherboards
• CPC Class Codes: G06F 1/185 Mounting of expansion boards
• CPC Class Codes: G06F 1/186 Securing of expansion boards in correspondence to slots provided at the computer enclosure
• CPC Class Codes: H05K 9/0016 having a spring contact
• CPC Class Codes: Y10T 24/304 Resilient metal type
• CPC Class Codes: Y10T 24/306 Strip formed

Abstract

A shielding panel for shielding circuit card slots on a computer chassis, and particularly a shielding panel for use with printed circuit board brackets and/or blank brackets to shield circuit card slots provides an arrangement for reducing the leakage of electromagnetic waves and/or radio frequency waves through a computer chassis by providing protrusions around circuit card slots in the slot frame. The design of the present shielding panel includes a tab which wraps around an edge of the circuit card slot to help place and hold the shielding panel in position while substantially eliminating the potential interference between neighboring panels and/or panels and neighboring slots and inhibits the formation of a gap between the shielding panel and the computer chassis slot frame, therefore, substantially eliminating the chance of a bracket tip catching in such a gap. The present shielding panel also provides protrusions which are bent such that they extend above the surface of the shielding panel but the ends of which extend below the surface of the shielding panel or at least close enough to the surface of the shielding panel to thereby substantially eliminate the chance of a bracket snagging on the protrusions.

Claims

1. A shielding panel attachable to a computer chassis slot frame, said shielding panel comprising

a substantially planar facing having at least one aperture therethrough defining an aperture edge,

a hooked tab along said at least one aperture edge, the hooked tab extending out of the plane of the facing for assisting in placing and attaching said shielding panel on a computer chassis slot frame and for deflecting objects from catching between said shielding panel and said computer chassis slot frame, and

at least one finger-like protrusion appended to the facing proximate the aperture edge.

2. The shielding panel of claim 1 wherein

said planar facing having a top surface and a bottom surface, and

said at least one protrusion comprises a base, a body, and an end, wherein

the body lies between the base and the end, and

the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends out of the bottom surface of the facing.

3. The shielding panel of claim 1 wherein

said at least one protrusion comprises a base, a body, and an end,

the body lies between the base and the end, and

the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends toward the top surface of the facing defining a space between the end and the top surface of the facing wherein the space comprises a distance less than approximately 1 millimeter.

4. A shielding panel attachable to a computer chassis slot frame, said shielding panel comprising

a substantially planar facing having at least one aperture therethrough defining an aperture edge, said facing having a top surface and a bottom surface,

at least one finger-like protrusion appended to the facing proximate the aperture edge. the protrusion comprising a base, a body, and an end, wherein the body lies between the base and the end, and the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends out of the bottom surface of the facing thereby substantially preventing objects from catching between the finger-like protrusion and the top surface of the facing, and

a hooked tab along said at least one aperture edge, the tab extending out of the bottom surface of the facing for assisting in placing and attaching said shielding panel on a computer chassis slot frame and for deflecting objects from catching between said shielding panel and said computer chassis slot frame.

5. A shielding panel attachable to a computer chassis slot frame, said shielding panel comprising

a substantially planar facing having at least one aperture therethrough defining an aperture edge, said facing having a top surface and a bottom surface,

at least one finger-like protrusion appended to the facing proximate the aperture edge, the protrusion comprising a base, a body, and an end, wherein the body lies between the base and the end, and the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends toward the top surface of the facing defining a space between the end and the facing wherein the space comprises a distance less than approximately 1 millimeter thereby substantially preventing objects from catching between the finger-like protrusion and the top surface of the facing, and

a hooked tab along said at least one aperture edge, the tab extending out of the bottom surface of the facing for assisting in placing and attaching said shielding panel on a computer chassis slot frame and for deflecting objects from catching between said shielding panel and said computer chassis slot frame.

6. A shielding panel attachable to a computer chassis slot frame, said shielding panel comprising

a substantially planar facing having at least one aperture therethrough defining an aperture edge, said facing having a top surface and a bottom surface,

a hooked tab along said at least one aperture edge, the tab extending out of the bottom surface of the facing for assisting in placing and attaching said shielding panel on a computer chassis slot frame and for deflecting objects from catching between said shielding panel and said computer chassis slot frame, and

at least one finger-like protrusion appended to the facing proximate the aperture edge, the protrusion comprising a base, a body, and an end, wherein the body lies between the base and the end, and the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends out of the bottom surface of the facing thereby substantially preventing objects from catching between the finger-like protrusion and the top surface of the facing.

7. A shielding panel attachable to a computer chassis slot frame, said shielding panel comprising

a substantially planar facing having at least one aperture therethrough defining an aperture edge, said facing having a top surface and a bottom surface,

a hooked tab along said at least one aperture edge, the tab extending out of the bottom surface of the facing for assisting in placing and attaching said shielding panel on a computer chassis slot frame and for deflecting objects from catching between said shielding panel and said computer chassis slot frame, and

at least one finger-like protrusion appended to the facing proximate the aperture edge, the protrusion comprising a base, a body, and an end, wherein the body lies between the base and the end, and the base is proximate the facing, the body includes a bend extending out of the top surface of the facing, and the end extends toward the top surface of the facing defining a space between the end and the facing wherein the space comprises a distance less than approximately 1 millimeter thereby substantially preventing objects from catching between the finger-like protrusion and the top surface of the facing.