Abstract:
An EMI shielded apparatus having a substrate with at least one electrical component disposed on it; a plurality of discrete electrically conductive fastening units disposed in a pattern on the substrate surrounding the at least one electrical component; a shield comprising a dielectric material layer having an inner surface and an outer surface and an alectrically conductive layer over at least one of the inner and outer surface; a plurality of apertures formed in the shield such that the apertures correspond to the pattern of the electrically conductive fastening units; wherein at least one of the apertures has a contact region and wherein both the dielectric material layer and the electrically conductive layer of the shield at the contact region of the aperture are deflectable to the extent necessary to allow the contact region to engage and retain the electrically conductive fastening unit; and wherein the electrically conductive layer of the shield at the contact region is in electrical contact with the electrically conductive fastening unit.
Abstract:
A shield can fixing clip is disclosed. The object of the present invention is to provide a shield can fixing clip capable of being more securely fixed onto a printed circuit board (PCB) without deteriorating space utilization of the PCB and a holding force of the PCB with respect to the shield can. According to the present invention, a shield can fixing clip to fix to a printed circuit board (PCB) a shield can provided to cover electronic parts mounted on the PCB, the shield can fixing clip comprises a plurality of first fixing units fixed in contact with the PCB, a second fixing unit disposed between the first fixing units and fixed in contact with the PCB, an extension unit flanged from each edge of the second fixing unit upward and outward to be spaced apart from the PCB, a connection unit formed as an inclination to connect the extension unit with the first fixing unit, and a pair of resilient pieces formed upright at the extension unit, facing each other, to clamp a sidewall of the shield can.
Abstract:
The present invention relates to printed circuit board (PCB) assemblies and particularly, but not exclusively, to a system for shielding components from radio frequency interference (RFI) and more particularly to a system for shielding surface mounted devices (SMD). The invention provides an assembly comprising a PCB (4) and a component (2) realisably mounted thereon by securing means. The securing means comprises a resiliently flexible and sprung bias clip member secured to one of the PCB (4) and said component (2); and first and second surfaces provided on the other of the PCB (4) and said component (2). The first surface is arranged to can and thereby resiliently flex said clip member in a first direction against the clip member bias, and the second surface is arranged so as to allow the said clip member to move, by means as said by us, in a second direction opposite to said first direction. The clip member maybe thereby latched on said second surface so as to provide resistance to the PCB and said component being disassembled.
Abstract:
A method for manufacturing an elastic element for e.g. sealing, electromagnetic shielding or vibration absorption, comprising the steps of supplying, by means of a needle-like filling nozzle (11) of a filling means (10), a material which is in a viscous state to at least one cavity (9) formed in a mould unit (8), subsequently treating the material supplied to each cavity (9) in such manner that it assumes a non-viscous, elastic state, and finally separating the material and the mould unit (8) to uncover the material which thus forms said elastic element. The method is characterised in that the viscous material is supplied to each cavity (9) while the cavity (9) is open towards the surroundings, and that the step of treating the material supplied to each cavity (9) is preceded by the step of scraping away, with the aid of a scraping means (12), surplus material which when supplying the viscous material to each cavity (9) is not accommodated therein. The invention also relates to a component (1a), on which an elastic element is arranged by said method, as well as a device for manufacturing an elastic element.
Abstract:
An electromagnetic shield (10) for absorbing electromagnetic energy generated by a circuit disposed upon a circuit board (32). The shield (10) is comprised of a thermally conductive material to further provide heat-sink capabilities. Clip members (16) releasably fastened to a flange (15, 16) projecting from a shielding surface (12) formed by the shield (10) are aligned with the ground plne (36) of a circuit board (32). By maintaining the shield (10) in a confronting relationship with the circuit board (32) the clip members (16) are caused to maintain the shielding surface (12) in electrical contact with the circuit.
Abstract:
The present invention relates a method for soldering a shield (2) to a PCB (1), the method of soldering comprising the steps of, inserting four shield pins (3) into a PCB (1), providing the PCB (1) with solder, cutting a planar sheet's four corners to obtain a flat sheet with removed square cut-outs at the corners and forming four side extensions (5) by bending four edges of the flat part (4) in one direction such that the flat part (4) is surrounded by substantially right-angled side extensions (5) in the form of a shield (2).