STACKED ELECTRICAL CARD
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to electrical connector assemblies, and particularly to stacked electrical card connector assemblies with multi-function boardlocks.
2. Description of the Related Art
A conventional electrical card connector, as disclosed in U.S. Pat. Nos. 6,095,864, 6,135,792 and 6,352,438 and Taiwan Patent Issue Nos. 238005, 244032 and 244643, is designed to receive a single electrical card. The electrical card connector is mounted on a printed circuit board (PCB) for electrically connecting the electrical card received therein with an electrical circuit of the PCB. The electrical card connector usually has boardlocks which mechanically fasten the electrical card connector on the PCB. More details about this kind of electrical card connector can be found in Memory Card Connector (Connector Specifier, pp. 40-42, February 1998).
Due to continuing trends toward miniaturization and improved electrical performance in the electronics industry, requirements for smaller components and higher electrical speeds are constantly being promulgated. Electrical card connectors such as the one mentioned above need to be made more compact, in order to save space in electronic devices in which these connectors are to be installed. In addition, more than one electrical card is needed inside certain electronic devices, to provide more functions for the device or to provide for transferring and saving of information. Each additional electrical card needed requires a corresponding additional electrical card connector. The simplest way to provide a plurality of electrical card connectors in a limited space is to stack the electrical card connectors on top of each other. However, each electrical card connector has a separate boardlock used to fasten the electrical card connector firmly on the PCB. The electrical card connector assembly generally needs another element to fix the two electrical card connectors together. As a result, it is unduly complicated and inconvenient to assemble the two electrical connectors and mount them on the PCB.
Hence, a new electrical card connector assembly with multi-function boardlocks that overcomes the abovementioned problems is desired.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical card connector assembly having multi-function boardlocks which stack two or more electrical card connectors together and fasten them firmly on a PCB.
To achieve the above-mentioned object, a stacked electrical card connector assembly in accordance with a preferred embodiment of the present invention comprises a first electrical card connector, a second electrical card connector, a pair of boardlocks and a pair of grounding members. The boardlocks engagingly stack the two electrical card connectors together, and protrude below the second electrical card connector for fixing to a PCB. The boardlocks thus securely fix the two electrical card connectors to the PCB.
Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded isometric view of a stacked electrical card connector assembly in accordance with a pre5 ferred embodiment of the present invention;
FIG. 2 is an isometric view of the stacked electrical card connector assembly of FIG. 1 fully assembled, but viewed from another aspect;
FIG. 3 is an enlarged, inverted view of a first electrical 10 card or of the stacked electrical card connector assembly of FIG. 1.
FIG. 4 is an enlarged, inverted view of a second electrical card or of the stacked electrical card connector assembly of FIG. 1.
DESCRIPTION OF THE PREFERRED
Reference will now be made to the drawing figures to
20 describe the present invention in detail.
Referring to FIGS. 1-4, an electrical card connector assembly 1 in accordance with a preferred embodiment of the present invention comprises a first electrical card connector 2, a second electrical card connector 3, a pair of
25 boardlocks 4 and a pair of grounding members 5.
The first electrical card connector 2 comprises a first frame 21 and a first ejector 23. The first frame 21 comprises a first main portion 211, and a pair of parallel first cantilevers 213 extending from opposite ends of the first main portion
3Q 211 respectively. The first ejector 23 is movably attached to one of the first cantilevers 213. Each first cantilever 213 has a first post 2110 formed at an end thereof proximal to the first main portion 211. Each first post 2110 defines a rectangular first retaining hole 2111, and an adjacent rectangular first connecting hole 2112 therein. A circular first recess 2131 is
35 defined in a top of an end of each first cantilever 213 that is distal from the first main portion 211. A first bulge 2132 is formed at a bottom of the distal end of each first cantilever 213. A configuration of the first bulge 2132 corresponds to a configuration of the first recess 2131. A pair of first
40 protrusions 2133 is formed on the top of the distal end of each first cantilever 213, between the first recess 2131 and the first main portion 211 and near the first recess 2131.
The second electrical card connector 3 is similar to the first electrical card connector 2, and comprises a second
45 frame 31 and a second ejector 33. The second frame 31 comprises a second main portion 311, and a pair of parallel second cantilevers 313 extending from opposite ends of the second main portion 311 respectively. The second ejector 33 is movably attached to one of the second cantilevers 313.
50 Each second cantilever 313 has a second post 3110 formed at an end thereof proximal to the second main portion 311. Each second post 3110 defines a rectangular second retaining hole 3111 and an adjacent rectangular second connecting hole 3112 therein. A circular second recess 3131 is defined in a top of an end of each second cantilever 313 that is distal
55 from the second main portion 311. A second bulge 3132 is formed at a bottom of the distal end of each second cantilever 313. A configuration of the second bulge 3132 corresponds to a configuration of the second recess 3131. A pair of second protrusions 3133 is formed on a bottom of the
60 distal end of each second cantilever 313, between the second bulge 3132 and the second main portion 311 and near the second bulge 3132.
Each grounding member 5 comprises a base plate 51, a pair of parallel retention plates 52 extending perpendicularly
65 from a top end and a bottom end of the base plate 51 respectively, and a pair of spaced spring arms 510 extending generally coplanarly from one main edge of the base plate