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Cable Assembly with EMI Shielding

IP.com Disclosure Number: IPCOM000248075D
Publication Date: 2016-Oct-24
Document File: 7 page(s) / 362K

Publishing Venue

The IP.com Prior Art Database

Abstract

A cable assembly with header connector(s) providing electromagnetic interference (EMI) shielding and comprising of assembled, separable embodiments. These embodiments include backshells, inner mold, conductive articles (in form of - but not limited to - band, strip, tape) and cable(s). The inner mold consists of features to structurally support the conductive articles. Contact between the conductive articles and the backshells offer the cable assembly EMI shielding through electrical grounding.

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Cable Assembly with EMI Shielding 

A cable assembly with header connector(s) providing electromagnetic interference (EMI) shielding and  comprising of assembled, separable embodiments. These embodiments include backshells, inner mold,  conductive articles (in form of ‐ but not limited to ‐ band, strip, tape) and cable(s). The inner mold  consists of features to structurally support the conductive articles. Contact between the conductive  articles and the backshells offer the cable assembly EMI shielding through electrical grounding. 

Apart from increasing data transfer rate, miniaturization of peripherals is another major consideration in  design and development of new enterprise and data storage systems. Benefits of a smaller form factor  include optimization of space and higher cost efficiency. 

The cable assembly of this publication suggests a significant overall smaller form factor as compared to  the current cable assembly design, achievable by introducing an inner mold that holds other functions  besides protecting the exposed, damage‐prone segments of the cable from external forces. These  functions include restraining movement of the cables in the backshells and structurally supporting the  conductive articles for EMI shielding, therefore eliminating the extended features on the backshells that  previously restrain and retain the cable, and support the conductive articles. The reduction in form  factor is most significant lengthwise in the mating/unmating direction of the header connector(s). 

 

 

Figure 1 ‐ Exploded (right) and assembled (left) views of a header connector of a cable assembly for  external application 

 


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In this design, the inner mold extends backward ‐ in the unmating direction ‐ to encapsulate partially  and restrain movement of the jackets, particularly when pulled in the unmating direction. Conductive  articles ‐ such as folded copper foils ‐ are wrapped around the inner mold at a specific location - along  the perimeter of the cables' stack, and when in contact with the interlocking upper and lower shells,  provide EMI shielding for the header connector through electrical grounding. 

As compared to some other designs, the exposed cable length between the inner mold and jacketed  cables has been eliminated, therefore reducing the length of the backshells and subsequently, the  overall length of the header connector in the mating/unmating direction. 

Elimination of the aforementioned exposed cable length and reduction in connector length is achieved  by incorporating a multi‐functional inner mold into a n...