1. Field of the invention
The present invention generally relates to an electrical card connector and more particularly to an electrical card connector with a metal shell.
2. Description of Related Art
Electrical cards are known in the art and contain intelligence in the form of a memory circuit or other electronic program. Some form of card readers retrieve the information or data stored on the card. Such cards are used in many applications in today's electronic society, such as video cameras, digital cameras, smart phones, PDAs, music players, ATMs, cable television decoders, toys, games, PC adapters, multi-media cards and other electronic applications, etc.
U.S. Patent Application Publication No. 2012252276 discloses an electrical card connector used for receiving a first electrical card and a second electrical card which is different from the electrical card. The first electrical card connector comprises an insulative housing and a plurality contacts retained in the insulative housing. The contacts include a first group of contacts and a second group of contacts, the first group of contacts have a plurality of first contacts and the second group of contacts have a plurality of second contacts. The second contacts are combined with the first contacts to contact with the electrical card. The first and second contacts each include a retaining portion retained in the insulative housing, a contacting portion and a soldering portion extending out of the insulative housing. Some of the first contacts and the second contacts are publicly used are soldering portion. But, the contacts have a large amount and they are assigned closed with each other nearly. It will improve the manufactured difficultly.
So, an improved connector is needed.
The present invention provides an electrical card connector used for connecting with a first electrical card and a second electrical card. The electrical card connector comprises an insulative housing, a plurality contacts retained in the insulative housing and a metal shell covering the insulative housing. The insulative housing has an receiving cavity for receiving the first and second electrical cards. The contacts have a first group of contacts connecting with the first electrical card and a second group of contacts combining with the second group of contacts connecting with the second electrical card. The first and second groups of contacts are arranging from front to rear along an inserting direction of the electrical card. The metal shell has at least an elastic arm extending into the receiving cavity and contacting with the second electrical card but not contacting with the first electrical card.
Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
Reference will now be made to the drawing figures to describe the preferred embodiment of the present invention in detail.
Referring to
The electrical card connector 100 comprises an insulative housing 1, a plurality of contacts 2 retained in the insulative housing 1, an ejector 3 assembled in the insulative housing 1, a switch contact 4 and a shield metal shell 5.
Referring to
The contacts 2 include a first group of contacts and a second group of contacts, the first group of contacts are used for contacting with the first electrical card (not shown). The first group of contacts is combining with the second groups to contact with the second electrical card 200. The first group of contacts include a plurality of first contacts 21 and the second group of contacts include a plurality of second contacts 22. The first contacts 21 each include a first retaining portion 211 retained in the insulative housing 1, a first contacting portion 212 extending forwardly from the retaining portion 211 and into the receiving cavity 15 and a first soldering portion 213 extending backwardly from the first retaining portion 211 and out of the insulative housing 1. The second contacts 22 each include a second retaining portion 221 retained in the insulative housing 1, a second contacting portion 222 extending forwardly from the retaining portion 221 and into the receiving cavity 15 and a second soldering portion 223 extending backwardly from the second retaining portion 221 and out of the insulative housing 1. The second contacting portion 222 exrtends forwardly beyond the first contacting portion 212. The first and second contacting portions 212, 222 are located in a same height. A width of the first soldering portion 213 is same as that of the second soldering portion 223. The first and second soldering portions 213, 223 are arranged in one row behind the base portion 10 and along the left to right direction. The second contacts include two first signal contacts 2201, a power contact 2202 and two second signal contacts 2203 along the left to right direction. When the second electrical card 200 is inserted into the receiving cavity 15, the first signal contact 2201 contacts with the first signal pad 2022 of the second electrical card 200, the power contact 2202 contacts with the power pad 2024 and the second signal contact 2203 contacts with the second signal pad 2025 to which the grounding pads 2021, 2023, 2026 contact will be described in below.
Referring to
The metal shell 5 includes a top wall 51 and two side walls 52 extending downwardly from two sides of the top wall 51. The top wall 51 has a first opening 512 corresponding to the first and second contacting portions 212, 222 along an upper to down direction and a second opening 513 located in a front of the first opening 51. When the second electrical card 200 inserts into the receiving cavity 15, the electrical card 200 resists the first and second contacting portions 212, 222 upwardly, the first and second opening 512, 513 is supplied a swing space to avoid the first and second contacting portion 212, 222 contacting with the top wall 51 of the metal shell 5.
The two side walls 52 lock with the side portions 11 of the insulative housing 1. The second opening 513 has a plurality of the elastic arms 53 extending rearward from a front edge thereof The elastic arms 53 have a first elastic arm 531, a second arm 532 and a third arm 533 arranged along the left to right direction. The first elastic arm 531 is located in the left of the first signal contact 2201, the second elastic arm 532 is located between the first signal contact 2201 and the power contact 2202 and the third contact 2203 is located in the right of a right one of the two second signal contacts 2203.
The elastic arms 53 each has an extending portion 5301 extending from the second opening 513 and into the receiving cavity 15, a resisting portion 5302 extending upwardly from a rear end of the extending portion 5301. The resisting portions 5302 are located in the receiving cavity 15 and arranged one row with the second contacts 22. The first elastic arm 531 contacts with the first grounding pad 2201 of the second electrical card 200 for grounding. The second elastic arm 532 contacts with the second grounding pad 2023 of the second electrical card 200 for grounding. The third elastic arm 533 contacts with the third grounding pad 2026 for grounding.
The electrical card connector 100 has the metal shell 5. The metal shell 5 is formed with a plurality of elastic arms 53 contacting with the first, second and third grounding pads 2021, 2023, 2026, respectively for grounding to instead of a plurality of grounding contacts of an electrical card connector of prior art. It would reduces the number of the contacts to make the structure of the contacts easy.
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.
Number | Date | Country | Kind |
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201220362632.9 | Jul 2012 | CN | national |