Electrical connectors – Electromagnetic or electrostatic shield – Multi-part shield body
Reexamination Certificate
1999-12-02
2001-02-27
Luebke, Renee (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Multi-part shield body
C439S108000
Reexamination Certificate
active
06193555
ABSTRACT:
BACKGROUND OF THE INVENTION
1. The Field of the Invention
The present invention relates to a hybrid connector, and particularly to the terminals of a hybrid connector with reliable ESD and EMI protection.
2. Brief Description of the Prior Art
U.S. Pat. No. 5,344,327 discloses a hybrid connector which provides an opening in a housing between a plurality of first terminals and a plurality of second terminals. The opening, in essence, establishes a region of reduced electric permitivity thereby reducing capacitive coupling and crosstalk between the plurality of first and second terminals. As is well known, a metal plate can provide more satisfying protection against capacitive coupling and crosstalk than an air gap can.
Protection from electrostatic discharge (ESD) is also important, particularly to electrical devices which are sensitive to applied voltages. Although the disclosed connector provides protection against crosstalk and capacitive coupling between the first and second terminals, it provides no ESD protection.
Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
A first object of the present invention is to provide an improved hybrid connector which has a grounded blade for reducing crosstalk and capacitive coupling between a plurality of first terminals and a plurality of second terminals; and
A second object of the present invention is to provide an improved hybrid connector which has a grounded blade which protects against ESD.
To achieve the above-mentioned objects, a connector includes an elongate housing having a mating portion separated into two sides, a plurality of data terminals received in the first side and a plurality of high speed signal terminals and a grounding terminal received in the second side, a metallic blade fitting into a gap in the mating portion which separates the two sides of the mating portion, and a conductive shield having a plurality of claws and surrounding the mating portion.
The mating portion forwardly projects from a body portion of the housing which further includes a pair of recesses for accommodating a pair of conductive board locks therein. The second side of the mating portion forms a plurality of blocks extending into the gap and defines a pair of grooves at its upper and lower sides, the grooves being in communication with the gap.
The blade comprises a base, a pair of side wings depending horizontally from the base and a pair of resilient fingers respectively rearwardly extending from the side wings. The base has a plurality of bumps for interferentially engaging with the blocks of the mating portion to secure the blade in the gap. Each resilient finger is outwardly extending and forms an engaging embossment at a tip thereof for reliably contacting the shield.
In assembly, the base of the blade is inserted into the gap and the plurality of bumps thereof interferentially mates with the blocks of the mating portion while the side wings of the blade are received in the grooves of the mating portion. The shield is assembled to the housing and the fingers of the blade contact the shield. The claws of the shield are then bent to secure the shield to the housing while concurrently engaging with the board locks, thereby establishing an electrical connection to ground. Therefore, the metallic blade interposed between the signal terminals and the data terminals is grounded, thereby reducing crosstalk and capacitive coupling between them and dissipating ESD.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5772472 (1998-06-01), Beutler et al.
patent: 5961350 (1999-10-01), Shiu
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Luebke Renee
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