Electrical connectors – With circuit conductors and safety grounding provision
Reexamination Certificate
1999-10-06
2001-01-16
Paumen, Gary F. (Department: 2833)
Electrical connectors
With circuit conductors and safety grounding provision
Reexamination Certificate
active
06174176
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a memory card connector, and more particularly to such a memory card connector that has means to protect against electromagnetic interference.
Regular mobile data processing apparatus (for example, palm-top computers, digital cameras), due to size and weight limitations, cannot have many built-in data storage means. In order to eliminate this problem, replaceable memory cards are developed for use with mobile data processing apparatus. For receiving a memory card, a mobile data processing apparatus must be equipped with a memory card connector. The memory card connector is installed in the circuit board of the mobile data processing apparatus. The design of a memory card connector must enable a memory card to be quickly and accurately installed. When a memory card is inserted into the memory card connector at a mobile data processing apparatus, interference electric charges are guided from the memory card through the grounding terminal of the memory card connector to the grounding circuit of the circuit board. Because this arrangement cannot quickly and completely guide out noise signal from the inserted memory card to the circuit board, the signal transmission quality is unstable.
SUMMARY OF THE INVENTION
The present invention has been accomplished to provide a memory card connector, which eliminates the aforesaid problem. It is one object of the present invention to provide a memory card connector, which eliminates static electricity from the inserted memory card. It is another object of the present invention to provide a memory card connector, which enables the inserted memory card to be quickly and accurately guided into position. According to one aspect of the present invention, the memory card connector comprises a connector body, a set of terminals, and two metal guide bars, wherein the connector body comprises a terminal holder block, and two arms respectively and perpendicularly formed on two distal ends of the elongated terminal holder block and arranged in parallel, the arms each having a rear end connected to the terminal holder block and a front end terminating into a locating means; the terminals are respectively mounted in the terminal holder block, each having a rear end welded to a respective contact at the circuit board and a front end projecting into the space defined between the arms of the connector body for receiving the inserted memory card; the metal guide bars each have a coupling unit respectively coupled to the locating means at the arms of the connector body, and a grounding unit respectively connected to a grounding circuit at the circuit board for guiding noise signal from the inserted memory card to the grounding circuit at the circuit board. According to another aspect of the present invention, the locating means of each of the arms of the connector body comprises a plug hole, and the coupling unit of each of the metal guide arms comprises a plug strip plugged into the plug hole of the locating means at the corresponding arm. According to still another aspect of the present invention, the locating means of each of the arms of the connector body further comprises a rectangular locating rod axially extended from the corresponding arm at the connector body adjacent to the corresponding plug hole, and the metal guide arms are hollow members respectively sleeved onto the locating rod of the locating means of each of the arms of the connector body. According to still another aspect of the present invention, the grounding unit of each of the metal guide bars comprises a springy contact strip for contacting metal shell means of the inserted memory card, and a mounting lug connected between the springy contact strip and the grounding circuit of the circuit board for guiding noise signal from the inserted memory card to the grounding circuit of the circuit board.
REFERENCES:
patent: 5588850 (1996-12-01), Pan et al.
Nguyen Phuong Chi
Paumen Gary F.
Pro-Techtor Inter-national Services
Speed Tech Corp.
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