Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
2000-05-26
2001-10-16
Paumen, Gary (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S571000, C439S138000
Reexamination Certificate
active
06302737
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a bracket for receiving an external device such as a transceiver module or the like and, more particularly, to a bracket having a fixing device for fixing parts of the bracket together and also to bracket assembly using such brackets integrally stacked by the fixing device.
2. The Prior Art
Brackets have been used in many electrical devices such as personal computers or high frequency appliances for receiving an external electrical device inserted thereinto. Normally, the bracket is engaged with a connector which is electrically and mechanically connected to a printed circuit board via pins thereof soldered onto traces on the printed circuit board. However, the engagement between the pins and the printed circuit board may be damaged due to frequent insertion/withdrawal of the electrical device into/from the bracket.
Earlier efforts to provide a reinforcement member for further securing the bracket on the printed circuit board is provided by U.S. Pat. No. 5,879,173, wherein two ground tabs are fixed in the bracket and each ground tab has a downward ground post for being soldered to the brace of the printed circuit thereby further securing the bracket to the printed circuit board. Although the ground posts can reinforce the engagement between the bracket and the printed circuit board, the connection thereof still may be damaged due to frequent insertion/withdrawal of the electrical device because the soldering connection can not stand pulling force resulted from the frequent movement of the electrical device with respect to the bracket. Moreover, U.S. Pat. No. 5,879,173 does not provide any fixing device to connect at least two brackets to be a stacked assembly which may save space for compact size requirement, especially used in a large server system or backplane in a telecommunication exchanging system. It is requisite to provide a new bracket having a fixing device and stacked bracket assembly for better performance.
SUMMARY OF THE INVENTION
The primary purpose of the present invention is to provide a bracket having a fixing device for integrating parts of the bracket and securing the bracket in an external printed circuit board.
Another purpose of the present invention is to provide a bracket assembly stacked by at least two brackets for compact size trend in the information technology industry.
According to one aspect of the present invention there is provided a bracket for receiving an external electrical device. The bracket comprises a frame having a substantially U-shaped structure including a bottom and two side walls extending upright from two sides of the bottom. Each side wall has a top surface and an opposite bottom surface. A positioning groove is defined in each side wall extending from the top surface to the bottom surface thereof. A metal shielding covers at least a top surface of the frame. A U-shaped clip has two prongs parallel to each other and each prong of the clip is engaged within a corresponding one of the positioning grooves for reinforcing engagement between the metal shielding and the frame.
According to another aspect of the present invention there is provided a bracket assembly for receiving external electrical devices. The bracket assembly comprises at least two brackets stacked together via engagement of a U-shaped clip having two prongs parallel to each other and each prong of the clip being engaged within corresponding registered positioning grooves of the at least two stacked brackets for engaging the at least two stacked brackets together. Each one of the at least two brackets comprises a frame and a metal shielding configured to the frame. The frame has a substantially U-shaped structure including a bottom and two side walls extending upright from two sides of the bottom. Each side wall has a top surface and an opposite bottom surface. A positioning groove is defined in each side wall extending from the top surface to the bottom surface thereof. The metal shielding covers at least a top surface of the frame.
REFERENCES:
patent: 5842886 (1998-12-01), Illg et al.
patent: 5863210 (1999-01-01), Reisinger
patent: 5879173 (1999-03-01), Poplawski et al.
patent: 6095862 (1998-12-01), Doye et al.
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Paumen Gary
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