1. Field of the Invention
The present invention relates to an electrical card connector, more particularly to an electrical card connector with an improved push-push mechanism for reducing a size of the electrical card connector.
2. Description of Related Art
Electrical card connectors are usually mounted on a PCB of the electronic devices to establish data transmission between the electrical cards and the electronic devices. Usually, an electrical card connector sets a push-push mechanism for pushing an electrical card into or out of the electrical card connector. Such current electrical card connector includes an insulative housing, a plurality of contacts fixed in the insulative housing, a push-push mechanism and a metal shell covering the insulative housing. The push-push mechanism includes a slider moveable along the card insertion direction, a coiled spring abutting against the slider and a link rod for controlling positions of the slider. The metal shell has a top wall and two side bending walls bent from the lateral of the top wall. The bending wall has a flexible plate which is torn from the bending wall and has a free end abutting against with the link rod to prevent the link rod from dropping out of the slider. The slider has a heart groove on a lateral surface thereof, the link rod slides along the heart groove during an insertion of the corresponding electrical card into the memory card connector, the link rod may be push beyond the slider and force the flexible plate of the metal shell. As an example, in U.S. Pat. No. 6,520,784 issued to Ito et al. on Feb. 18, 2003, it is disclosed that a slider is received in a recess portion along a side portion of housing so that an eject mechanism does not project to the side of connector body, thus reducing the area occupied on an underlying substrate. See column 5, lines 21-28.
Hence, an improved electrical card connector with improved push-push mechanism is needed to solve the problem above.
An electrical card connector includes an insulative housing, a plurality of contacts retained in the insulative housing, a push-push mechanism and a metal shell covering the insulative housing. The insulative defining a receiving space for insertion of an electrical card. The push-push mechanism includes a slider moveable along a front to back direction, a coiled spring positioned between the slider and the insulative housing, and a link rod for controlling positions of the slider, the slider having an outer surface located outside of the card receiving space, a heart-shape groove depressing inside from the outer surface, a heart-shaped block located in a middle of the heart-shaped groove and a straight guiding groove communicating with the heart-shape groove, the link rod formed with a first end portion being assembled to the insulative housing and a second end portion sliding in the heart-shape groove and the straight guiding groove. The metal shell has a flexible plate abutting against with the second end portion of the link rod. Wherein the slider further having an engaging surface depressing from a part of the outer surface in front of the heart-shaped groove, and the heart-shape groove including the heart-shaped block is retracted from the outer surface together with the engaging surface for providing the second end portion a deeper space.
The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of the invention will be described hereinafter which form the subject of the claims of the invention.
For a more complete understanding of the present invention, and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be obvious to those skilled in the art that the present invention may be practiced without such specific details. In other instances, well-known circuits have been shown in block diagram form in order not to obscure the present invention in unnecessary detail. For the most part, details concerning timing considerations and the like have been omitted inasmuch as such details are not necessary to obtain a complete understanding of the present invention and are within the skills of persons of ordinary skill in the relevant art.
Referring to
The insulative housing 1 includes a rear wall 10, two sidewalls 11 extending upwardly from a left side and a right side of the rear wall 10, a card receiving space 12 is formed between the rear wall 10 and the two side walls 11. The insulative housing 1 further includes a bottom wall 121 connecting with the two side walls 11 along a transverse direction. The bottom wall 121 is a hollow plate and formed with a plurality of separating plates 101 extending forwardly and connecting with a bottom end of the rear wall 10. The side wall 11 defines a receiving chamber 110 communicating with the card receiving space 12 and a protrusion post 1101 (refer to
Please reference to
Reference to
The slider 31 has a engaging surface 315 depressing from the outer surface 310 in front of the heart-shaped groove 311, the heart-shaped block 3111 has an assistant surface 316 on an outside thereof, the engaging surface 315 and the assistant surface 316 are both located in a vertical interface and in an inner side of the outer surface 310. The heart-shaped groove 311 including the first slot 3112, the second slot 3113 and the locking slot 3114 is retracted from the outer surface 310 together. The assistant surface 316 also retracted from the outer surface 310 as the same with the heart-shaped groove 311. In this arrangement, the first inner surface of the straight guiding groove 314 is much near to the outer surface than that of the second inner surface of the heat-shaped groove 311. One end of the coiled spring 32 surrounds the protrusion post 1101 and the other end of the coiled spring 32 is positioned around the locking post 312. The coiled spring 32 gives the slider 31 an elastic force to realize ejecting the electrical card from the electrical card connector 100.
The link rod 33 includes a middle portion 332, a first end portion 331 and a second end portion 333 laterally bending from opposite ends of the middle portion 331. The second end portion 333 is assembled to the straight guiding groove 314, the first end portion 331 is assembled to the receiving groove 1121. The middle portion 332 is exposed in the notch 111. The second end portion 333 is moveable in the heart-shaped groove 311. The electrical card connector 100 is so-called push-push type card connector and the working theory of the push-push mechanism 3 is obvious to those of ordinary skill in the art, so the detailed description is omitted hereinafter.
Reference to
Referring to
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. For example, the tongue portion is extended in its length or is arranged on a reverse side thereof opposite to the supporting side with other contacts but still holding the contacts with an arrangement indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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201220276118.3 | Jun 2012 | CN | national |