Abstract:
A communication terminal compatible with multiple smart cards includes a socket for inserting a standard smart card and a chassis for making the socket fitting at least one of small and ultra-small types of smart cards. The small smart card and the ultra small smart card insert into the socket through the chassis. The present communication terminal proposes a mobile terminal compatible with 3FF and/or 4FF card because of the arrangement of the correspondent chassis in the case that it only arranges 2FF card socket.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the priority of International Application No. PCT/CN2013/081249, filed on Aug. 12, 2013, which claims priority to Chinese Application No. 201310094051.0, filed on Mar. 22, 2013. The entire disclosures of each of the above applications are incorporated herein by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present relates to a communication terminal field, more particularly, to a communication terminal compatible with a plurality of smart cards. 
         [0004]    2. Description of the Prior Art 
         [0005]    Nowadays, various Subscriber Identity Module (SIM) cards, such as 2FF, 3FF and 4FF cards, present in our market. 2FF card, the abbreviation for second Form Factor SIM card or called standard smart card, is the physical form of popular traditional SIM card. 2FF card is Plug-In card in standard. 3FF card, the abbreviation for Third Form Factor SIM card or called small smart card, is smaller than normal Plug-In card in the card international standard discussion in 2006. 4FF card, the abbreviation for Fourth Form Factor SIM card or called ultra small smart card, is smaller than 3FF card. A communication terminal in the prior art only supports one single SIM card type. 
       SUMMARY OF THE INVENTION 
       [0006]    Owing to the technical problem in the prior art, the present invention provides a communication terminal compatible with a plurality of smart cards to achieve a communication terminal capable of being compatible with a plurality of SIM cards. 
         [0007]    According to the present invention, a communication terminal compatible with a plurality of smart cards, comprises: 
         [0008]    a socket for inserting a standard smart card, the socket comprising a main body and a shell; and 
         [0009]    a chassis for making the socket fitting at least one of small and ultra-small types of smart cards, the small smart card and the ultra small smart card inserting into the socket through the chassis, the chassis comprising:
       a card slot for making the socket fitting the small smart card and the ultra small smart card;       
 
         [0011]    wherein the main body comprises:
       a groove for inserting the standard smart card and the chassis; and   a transmission mechanism for inserting or ejecting the standard smart card and the chassis.   According to the present invention, a communication terminal compatible with a plurality of smart cards, comprises:       
 
         [0015]    a socket for inserting as standard smart card; and 
         [0016]    a chassis for making the socket fitting at least one of small and ultra-small types of smart cards, 
         [0017]    wherein the small smart card and the ultra small smart card insert into the socket through the chassis. 
         [0018]    The present invention provides a communication terminal compatible with a plurality of smart cards that a mobile terminal is compatible with 3FF and/or 4FF card because of the arrangement of the suitable chassis in the case that it only arranges 2FF card socket. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  is an exploded view that a main body and a shell on a socket in a communication terminal compatible with a plurality of smart cards in the present invention; 
           [0020]      FIG. 2  is an assembly diagram that the main body and the shell on the socket in the communication terminal compatible with the plurality of smart cards in the present invention; 
           [0021]      FIG. 3  is an assembly diagram that HT card and suitable chassis in the communication terminal compatible with the plurality of smart cards in the present invention; 
           [0022]      FIG. 4  is an assembly diagram that 4FF card and suitable chassis in the communication terminal compatible with the plurality of smart cards in the present invention; 
           [0023]      FIG. 5  is a schematic diagram that the communication terminal compatible with the plurality of smart cards in the present invention before the chassis plugs in; 
           [0024]      FIG. 6  is a schematic diagram that the communication terminal compatible with the plurality of smart cards in the present invention in the process that the chassis plugs in; 
           [0025]      FIG. 7  is a schematic diagram that the chassis of the communication terminal compatible with the plurality of smart cards in the present invention locks on the socket; 
           [0026]      FIG. 8  is a schematic diagram that the chassis of the communication terminal compatible with the plurality of smart cards in the present invention in the process of being pushed off. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0027]    In order to illustrate the technique and effects of the present invention, a detailed description will be disclosed by the following disclosure in conjunction with figures. It is noted that the same components are labeled by the same number. 
         [0028]    An embodiment provides a communication terminal compatible with a plurality of smart cards, and the communication terminal comprises but is not limited to a mobile phone, a tablet computer or a personal digital assistant, etc. The communication terminal comprises a socket  100  (refer to  FIG. 1  and  FIG. 2 ) and a chassis  200  (refer to  FIG. 3  and  FIG. 4 ). The socket  100  is used for inserting a SIM card, and a size of the socket  100  in the present invention fits for 2FF card. The chassis  200  is used for the socket  100  being compatible with a card smaller than the 2FF card, such as 3FF card  300  and 4FF card  400 . The shape of the socket  200  is identical with that of the 2FF card, and the socket  200  arranges a card slot  111  for inserting a 3FF and/or 4FF card. 
         [0029]    Preferably, as shown in  FIG. 3  and  FIG. 4 , the 3FF card  300  and the 4FF card  400  respectively arrange two chassis  200  which means the 3FF card  300  and the 4FF card  400  are not set up in the same chassis  200 . Therefore, it assures to narrow down the chassis to improve useful space of the communication terminal so that it conforms to a development of thinner communication terminals. 
         [0030]    As  FIG. 1  and  FIG. 2  illustrate, the socket  100  comprises a main body  110  made of plastic. The main body  110  arranges a groove for inserting a 2FF card and the chassis  200 . The surface where the groove of the main body  110  locates is covered by the shell  120  made of iron. The main body  110  arranges a transmission mechanism  112  for inserting or ejecting 2FF card or the chassis  200  (as  FIG. 5  shows). When 2FF card or the chassis  200  is pushed off, insert 2FF card or the chassis  200  with hands, and the 2FF card or the chassis  200  is locked until the 2FF card or the chassis  200  arrives at the lock location. On the contrary, when 2FF card or the chassis  200  is locked, push 2FF card or the chassis  200  with hands and loosen, and then the 2FF card or the chassis  200  ejects (refer to  FIG. 5  to  FIG. 8 ). 
         [0031]    It arranges a guide groove  113  in the main body  110  and a rail  211  on the chassis  200  for the chassis entering into or ejecting from the socket  100  accurately. 
         [0032]    It also arranges a disk device for storing the chassis  200  in the communication terminal so that the chassis  200  is stored in the disk device if not used. 
         [0033]    In hence, the present invention provides the chassis  200  for the communication terminal being compatible with the 3FF card  300  and the 4FF card  400  well, and without doubt, the communication terminal is also compatible with other smaller SIM cards that is also protected in the present invention. 
         [0034]    Refer to any one of  FIG. 5  to  FIG. 8 , the transmission mechanism comprises a locating bar  510 , a supporting member  520  and a retaining spring  530 . One side of the locating bar  510  is swingably connected with the first fixed part of the main body  110 , and the other side of the locating bar  510  is connected with the supporting member  520 . One side of the retaining spring  530  is connected with the second fixed part of the main body  110 , and the other side of the retaining spring  530  is connected with a connecting member  521 . 
         [0035]    The supporting member  520  comprises the connecting member  521  and the hook  522  extending into the groove. A chute for the other side of the locating bar  510  sliding, and the chute comprises an intersection groove  5211  and a locating groove  5212  for locating the locating bar  510 . A first sliding groove  5213  for guiding the other side of the locating bar  510  from the intersection groove  5211  to the locating groove  5212  and a second sliding groove  5214  for guiding the other side of the locating bar  510  from the locating groove  5212  to the intersection groove  5211  are set up between the intersection  5211  and the locating groove  5212 . The junction between the first groove  5213  and the locating groove  5212  appears stair shape for preventing the other side of the locating bar  510  from going back, the junction between the locating groove  5212  and the second sliding groove  5214  appears stair shape for preventing the other side of the locating bar  510  from going back, and the junction between the second sliding groove  5214  and the intersection groove  5211  appears stair shape for preventing the other side of the locating bar  510  from going back. The locating groove  5212  is U- or V-shaped, and two walls of the valley of U-shape or V-shape of the locating groove  5212  are dislocated so that the locating groove  5212  guides the locating bar  510  to the direction of the second sliding groove  5214 , not guiding to back. Besides that, the locating groove  5212  also appears step shape to prevent the locating bar  510  from going back. 
         [0036]    Refer to  FIG. 5  showing an original state diagram that the chassis does not insert into the communication terminal. At this moment, the other side of the locating bar  510  locates in the intersection groove to push the socket  200  (or a 2FF card), the socket  200  pushes the hook  522 , and the connecting member  521  compresses the retaining spring  530 . With the movement of the connecting member  521 , the other side of the locating bar  510  enters into the first sliding groove  5213  from the intersection groove  5211  until the hook  522  touches the main body  110 . At this moment, the other side of the locating bar  510  slides through a transition step of the first sliding groove  5213  and the locating groove  5212  into the locating groove  5212  (refer to  FIG. 6 ). And then release the hand so that the connecting member  521  returns back under the elastic force from the retaining spring  530  until the other side of the locating bar  510  arrives against the valley wall of the locating groove  5212  (refer to  FIG. 7 ). In hence the chassis  200  is locked in the groove. When it needs to pull the chassis  200  out, it pushes the chassis  200  until the hook  522  touches the main body  110 . At this moment, the other side of the locating bar  510  slides through a transition step of the second sliding groove  5214  and the locating groove  5212  into the second sliding groove  521  (refer to  FIG. 8 ). And then release the hand so that the connecting member  521  returns back under the elastic force from the retaining spring  530 , and the other side of the locating bar  510  moves to the intersection groove  5211  along with the second sliding groove  5214 . Therefore, it ejects the chassis  200  to back to the original state. 
         [0037]    The present invention provides a communication terminal compatible with a plurality of smart cards that a mobile terminal is compatible with 3FF and/or 4FF card because of the arrangement of the correspondent chassis in the case that it only arranges 2FF card socket. 
         [0038]    The present invention has been described with reference to certain preferred and alternative embodiments which are intended to be exemplary only and not limited to the full scope of the present invention as set forth in the appended claims.