Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
  • G06K7/0056—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector
  • G06K7/0069—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector including means for detecting correct insertion of the card, e.g. end detection switches notifying that the card has been inserted completely and correctly
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
  • G06K7/0021—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers for reading/sensing record carriers having surface contacts

Definitions

• the invention relates to a universal switch for a smart card connector or smart card reader, in particular to one with solder contacts.
• the limit switches can be designed as so-called openers or so-called closers, i. H. when a card is in its end position, the switch opens or closes.
• connection ends of the contact elements are both the read contact elements (read contact elements are those contact elements which are provided for contact engagement with the contacts on the smart or chip card) and the switch contact elements which form the limit switch arranged in certain positions.
• read contact elements are those contact elements which are provided for contact engagement with the contacts on the smart or chip card
• switch contact elements which form the limit switch arranged in certain positions.
• These positions of the connection ends correspond to the positions on a component.
• B. a printed circuit board on which the smart card connector is to be used.
• These different positions are, for example, in Fig. 4 on the component side, i. H. shown for example a printed circuit board and designated C8 7651234 and C4 3215678 for the connection ends of the read contact elements and with A, B and C for the connection ends of the switch contact elements.
• the invention is based on the object of a card presence switch or a limit switch as a universal switch, in particular for a smart card connector or a smart card connector with a universal switch, to be provided in such a way that the user has the choice between two switches in a smart card connector.
• the smart card connector is designed in such a way that its limit switch performs both the function of a closer and that of an opener when actuated by the smart card.
• two preferably identical, passive contact elements and one active contact element are used.
• the design according to the invention results in a reduction in the number of smart card connector variants to be kept available.
• the user himself has the choice, without having to replace the Smart card connector, between an LA opener or a limit switch designed as a closer
• the limit switch is preferably installed in the cover of the smart card connector from below. This eliminates the lid opening.
• the active contact element is mounted in particular in the form of a contact spring.
• This contact spring forms a break contact (NC) with position A and a make contact (NO) with position B.
• Figure 1 shows a smart card connector with limit switch in plan view of the underside.
• Fig. 2 is a front view of the connector of Fig. 1;
• FIG. 3 is a side view of the connector of Fig. 1;
• FIG. 4 shows a plan view of a printed circuit board into which the smart card connector of FIG. 1 can be soldered;
• FIG. 5 shows a sectional view of a first exemplary embodiment of a limit switch according to the invention, the section shown in FIG. 5 running approximately along the line V-V in FIG. 6;
• Fig. 6 is a plan view of the limit switch of Fig. 5;
• Fig. 7 is a schematic representation of a second embodiment of the invention in its starting position, where there is no card in the end position;
• FIG. 8 schematically shows the construction according to FIG. 7, the card having actuated the limit switch since it is in its end position.
• FIG. 1 to 3 show a smart card connector (also referred to as a chip card contacting device or smart card or chip card reader) 1 which has a cover 2, fastened on a contact carrier or frame 3.
• a smart card 4 or a chip card (short: card) 4 can be inserted into the smart card connector (short: reader) 1.
• Contact elements 5 are generally mounted in the frame 3 and serve to come into contact with the card contacts provided on the card when the card 4 is in its reading position. These contact elements 5 are also referred to as read contact elements 5. The reading contact elements 5 can with their
• connection ends 58 are inserted at positions 50 (see FIG. 4) in holes generally provided there and soldered firmly.
• a limit switch 6 acting as a universal switch is provided in the reader 1, as shown in FIGS. 1 and 3.
• the contact elements of the limit switch 6 are referred to as switch contact elements and can be arranged with their connecting ends 158 (FIG. 3) in the areas 60 (cf. FIG. 4) of a printed circuit board 59. These areas or positions 60 for connection to the terminal ends 158 are designated A, B and C in more detail in FIG.
• a first embodiment of the invention is shown in FIGS. 5 and 6.
• an end position switch 7 is inserted in a contact carrier designated by 23, ie the switch contact elements 71, 72, 73 forming the end position switch 7 are inserted in the contact carrier 23.
• This contact carrier can be formed either by the frame 3 or by the cover 2, which can initially be left open here.
• the contact carrier 23 is preferably the component corresponding to the contact carrier 3 in FIGS. 1 to 3.
• the switch contact element 71 can be referred to as an active switch element, because it can be actuated by the card 4. When the card 4 is inserted in its reading position, it exerts a force K on the switch element 71.
• the switch contact elements 72, 73 can accordingly be referred to as passive switch contact elements.
• the switch contact element 71 is preferably biased against a stop edge 771 and the preferably identical switch contact elements 72, 73 are biased against the biting edges 772 and 773 of the contact carrier 23.
• Each of the switch contact elements 71, 72, 73 preferably has an arm 74 or 75 or 76.
• the arms 74 to 76 end in contact ends 176, 77, 78.
• the contact end 176 forms contact edges 79, 80 and the contact ends 77, 78 form Contact bevels 82 and 81, respectively.
• the contact carrier 23 forms spring spaces 83, 84 and 85 for the arms 74, 75 and 76.
• the contact element 71 has at its contact element end 176 a card contact surface 86 which, in the position not shown, is slightly inclined to the longitudinal extension of the contact element arm 74 runs. This is achieved by an angle ⁇ greater than 180 °, which is provided between the angle parts 87 and 89 of the contact element end 176.
• the contact element end 176 also forms a further angular part 88, on which an arm 18 shown in FIG. 5 is angled downwards.
• the contact elements 71, 72, 73 each have a right angle with respect to the arms 74, 75 and 76 (FIG. 5), parts 720, 740 projecting downwards, the preferred are locked in the contact carrier 23 and form the connection ends 721, 741 of the switch contact elements 71, 72 and 73 at their free ends.
• connection ends 721 and 741 can be connected to the regions B and C (see also FIG. 4) to form a limit switch acting as a closer.
• An opener can be realized by connecting the connection of the contact element 73 with area A and the connector end 741 with area 741, which is located behind the connection end 721 in FIG.
• FIG. 7 and 8 show a second exemplary embodiment of the invention in a schematic representation.
• Two switch contact elements 171, 172 which form a limit switch 700 and are preferably in the form of a leaf spring are held here in a contact carrier (not shown).
• the contact element 171 is bent in a U-shape and is always connected to the position B, but can be lifted from the position A when a card 4 strikes a card contact part 300 of the contact element 171 in the direction of the arrow K.
• the contact element 172 is preferably designed in the form of a leaf spring and has an inclined contact element end 178 which can preferably be contacted by an inclined end 179 of the contact element 171, as is shown in FIG. 8.
• a limit switch 700 acting as an opener and closer is provided. I.e. when the card 4 has reached its reading position, a) positions A and B are open, thus forming an "opener", and b) positions B and C are closed, ie forming a "closer". Depending on where (at positions AB or BC) the user connects, he receives an NC or NO contact.

Landscapes

• Engineering & Computer Science (AREA)
• Artificial Intelligence (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Push-Button Switches (AREA)
• Conveying Record Carriers (AREA)

Applications Claiming Priority (5)

Publications (1)

Family

ID=26051150

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (4)

• 1999
  • 1999-12-31 US US09/623,260 patent/US6457641B1/en not_active Expired - Fee Related
  • 1999-12-31 WO PCT/EP1999/010484 patent/WO2000041126A1/de not_active Application Discontinuation
  • 1999-12-31 JP JP2000592783A patent/JP2002534747A/ja active Pending
  • 1999-12-31 EP EP99968810A patent/EP1060452A1/de not_active Withdrawn

Non-Patent Citations (1)

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