WO1998039724A2 - Steckbuchse zur kontaktierung wenigstens einer kontaktfläche in einer oberfläche eines steckelementes - Google Patents
Steckbuchse zur kontaktierung wenigstens einer kontaktfläche in einer oberfläche eines steckelementes Download PDFInfo
- Publication number
- WO1998039724A2 WO1998039724A2 PCT/DE1998/000645 DE9800645W WO9839724A2 WO 1998039724 A2 WO1998039724 A2 WO 1998039724A2 DE 9800645 W DE9800645 W DE 9800645W WO 9839724 A2 WO9839724 A2 WO 9839724A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- plug
- lever arm
- socket
- socket according
- Prior art date
Links
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
- G06K7/0021—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
- G06K7/0026—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 the galvanic contacts of the connector adapted for landing on the contacts of the card upon card insertion
-
- 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
- Socket for contacting at least one contact surface in a surface of a plug element
- a plug socket which can be part of a reading device for the card-shaped data carrier and into which the data carrier can be inserted of the data carrier slide into the socket over its surface and come to rest on the surface contacts when the data carrier is inserted.
- Disadvantages of such a solution are the low contact pressure of these metallic spring contacts - which can also result in a complete loss of contact due to bouncing in the event of tolerance deviations, vibrations or shocks - as well as the undesired abrasion of the data carrier housing, which is usually made of plastic, by dragging the spring contacts over it when pulling out or pushing in the data carrier.
- the object of the invention is to create a plug socket for contacting at least one contact surface in a surface of a plug element, in particular a card-shaped data carrier such as a chip card, which avoids the disadvantages mentioned.
- the socket according to the invention has a lever-shaped contact element with a first and a second lever arm for each contact surface to be contacted.
- the second is when the plug element is inserted into a receptacle of the plug socket H e b ELARM by the plug element in such a way can be deflected in that the first lever arm comes into contact with the contact surface.
- the lever-like contact elements advantageously allow contacting of the plug element while avoiding undesired abrasion on the surface of the housing of the plug element when the plug element is inserted or removed from the receptacle of the socket.
- a very large contact pressure of the first lever arm on the contact surface of the plug element can be achieved by suitable design of the contact element, in particular by appropriate design of the length relationships of the two lever arms.
- the contact elements act as toggle levers.
- the contact pressure is to be chosen so large that the plug element is held in the receptacle by the contact element.
- the contact element is provided with a spring element that the contact element holds in the rest position, provided that no plug element is inserted into the receptacle of the socket.
- the spring element can be tensioned by inserting the plug element into the receptacle, so that when the plug element is pulled out, a restoring force conveys the contact element back into the rest position.
- FIGS. 1 and 2 show a first embodiment of the socket
- FIGS. 3 and 4 show a second exemplary embodiment of the socket
- FIG. 5 shows a further exemplary embodiment of the socket
- Figure 6 is a detailed view of a further embodiment and Figure 7 lever-like contact elements of an embodiment of the socket.
- F igur 1 shows a cross-sectional view of a portion of egg nes first embodiment of the socket according to the invention 1. It comprises a receptacle 4 in which a Steckele ⁇ element 3 has been already partially inserted in Figure 1 (from right).
- the receptacle 4 within the socket 1 can be dimensioned such that the plug element 3 can be inserted partially or completely into it.
- the plug-in element is a card-shaped data carrier, for example a chip card.
- the invention is also suitable for other forms of plug-in elements which do not have a card shape.
- the plug element 3 has a contact surface 2 in its surface, which is to be contacted by means of the plug socket 1.
- it has a contact element 5 with a first lever arm 5a and a second lever arm 5b.
- the contact element 5 is mounted in a rotary bearing 8 and is connected via a spring element 7, which in the exemplary embodiment shown has the shape of a spiral spring and will be described later, to an electrical line 6, via which an electrical connection at least to the first lever arm 5a of the contact element 5 can be produced.
- the contact element 5 can be made in one piece and is then made of an electrically conductive material, advantageously metal, with sufficient flexural rigidity.
- the spring element 7 can also be made in one piece with the contact element 5. Then it makes sense if the material of the contact element 5 has corresponding spring properties.
- the contact surface 2 of the plug element 3 is contacted by the contact element 5 in the following way: I n F igur 1 the male member 3 from right to left is in t he Recording A 4 inserted.
- I n F igur 1 the male member 3 from right to left is in t he Recording A 4 inserted.
- the K ontaktelement 5 In the shown state in which a leading edge of the plug element 3 to the second lever arm 5b there d K ontaktelements 5 is not touched, is the K ontaktelement 5 in a rest position, in which the second He protrudes ⁇ belarm 5b into the insertion path of the male element 3, currency ⁇ rend the first lever arm 5a is located so far above this ⁇ A thrust path that he ment ⁇ upon insertion of the first Steckele- 3 does not slide over the surface thereof.
- FIG. 2 shows the same socket as FIG. 1 after the plug element 3 has been pushed further into the receptacle 4 from right to left, to an end position in which the second lever arm 5b during insertion of the plug element 3 through its front edge or End face has been deflected so far that the first lever arm 5a has been pivoted from above onto the contact surface 2 of the plug element 3 and thus an electrical connection between the electrical supply line 6 and the contact surface 2 is made via the contact element 5.
- this desired abrasion is locally limited to the area of the contact surface 2 on which the first lever arm 5a comes to rest.
- the spring element 7 has the task of holding the contact element 5 in the rest position when the plug element 3 is not inserted (the spring element 7 is then relaxed), in which the first lever arm 5a is outside the insertion path and second lever arm 5b is located within the insertion path of the plug-in element 3 (FIG. 1).
- the spring element 7 can be tensioned so that a restoring force acts on the contact element 5, which causes the contact element 5 to be reset to the rest position after the plug element 3 has been pulled out of the socket 1 ( Figure 1).
- the restoring force of the spring element 7 should be selected to be lower than would be necessary to remove the static friction between the first lever arm 5a and the contact surface 2.
- the socket 1, as shown in FIGS. 3 and 4 can also have a release element 9, by means of which the deflected contact element 5 returns to the rest position and the spring element 7 from the tensioned position State can be returned to the untensioned state.
- the trigger element 9 in the exemplary embodiment according to FIGS. 3 and 4 has the shape of a plunger which, from the top of the spring element 7 when the plug socket 1 is shown in FIG. 4, in which the plug element 3 is in an end position within its receptacle 4 can be pressed so that it springs back from its tense state to the relaxed state. This causes a torque on the contact element 5 in the counterclockwise direction in the illustration according to FIG. 4. The inserted plug-in element 3 is pressed out of the receptacle 4 against the direction of insertion by the second lever arm 5b.
- the spring element 7 in all of the exemplary embodiments shown can also be designed such that it works according to the so-called snap frog principle, as is the case with the exemplary embodiment illustrated in FIGS. 8 and 9, which otherwise corresponds to that from FIGS. 3 and 4.
- One after Spring element acting according to the click frog principle has two stable shape states. It has a pre-tension, which keeps it in one of the two stable states and, by deflection, jumps from this into the other stable state and vice versa.
- this mode of operation on the basis of a bar clamped at both ends, which is prestressed in such a way that it has a curvature in one direction. If, starting from this first state, a force is exerted on the spring element against the curvature, the spring element jumps into the second stable state when a minimum force is exceeded, in which it has a curvature in the opposite direction.
- the spring element 7 In the first stable state of the exemplary embodiment shown here (FIG. 8), the spring element 7 operating according to the snap frog principle holds the contact element 5 in the rest position and is only in through the deflection of the contact element 5 when the plug element 3 is inserted from this first state which it has a curvature downwards, movable, and when a certain minimum voltage is exceeded, it suddenly jumps into the second state (FIG. 9), in which it holds the first lever arm 5a in contact with the contact surface 2. From this second stable state, in which it has an upward curvature, the spring element 7 can in turn only be transferred to the first state (rest position), in that a certain minimum force acts on it in the now opposite direction. As shown in FIGS. 8 and 9, this minimum force can be generated by the trigger element 9 and / or by the elevation 10, which have already been described with reference to the exemplary embodiment in FIGS. 3 and 4.
- FIG. 5 shows a further exemplary embodiment of the socket 1 according to the invention, which in turn has the same components as the two previous exemplary embodiments.
- the contact element 5 has a different length ratio of its lever arms 5a, 5b, so that with the same insertion force acting on the plug element 3 when inserting into the receptacle 4, a higher contact pressure results from the first lever arm 5a .
- the spring action of the spring element 7 is based on the bending principle.
- a release element 9 is provided in the embodiment according to FIG. 5, which is not arranged above the spring element 7 in the socket 1, but which can be operated from the same side from which the plug element 3 can be inserted into it.
- the trigger element 9 is of larger dimensions and, at the end of a guide in which it can be moved within the socket 1, has a bevelled slide which, by pushing the trigger element 9 in, enables a force transmission to the spring element 7 in the second stable state shown, so that this changes into the relaxed state and exerts a corresponding restoring force on the second lever arm 5b of the contact element 5.
- FIG. 6 shows the detail of a further exemplary embodiment of the socket 1. Shown in a cut-out perspective view are two contact surfaces 2 in the surface of a plug element 3, which is inserted into the socket so far that it almost contacts the second lever arms 5b of the contact elements 5 touched . If the plug element 3 is pushed even further into the socket, the first lever arms 5a pivot down onto the contact surfaces 2.
- the two contact elements 5 shown are on one Common axis of rotation 12 is fixed, via which they are mounted in corresponding (not shown) pivot bearings.
- FIG. 6 also shows one of the spring elements 7 in the form of a spiral spring as in one of the exemplary embodiments from FIG. 1, 3 or 5.
- Two alternative options for attaching the trigger element 9 are indicated, which can be operated from the same side in this exemplary embodiment , of which the plug element 3 can be inserted into the receptacle 4 of the socket 1.
- the trigger elements 9 do not act directly on the spring elements 7, as shown in Figures 3 to 5, but on the axis of rotation 12. Alternatively, they can also be attached directly to the contact elements 5 and thus act directly on them.
- the restoring force on the contact element 5 can in principle also be realized by a spring element in the form of a torsion spring which, for example in a modification of the exemplary embodiment according to FIG. 6, acts directly on the axis of rotation 12 via which the contact element 5 is mounted in the pivot bearing 8 .
- FIG. 7 shows a side view of a plurality of contact elements 5 arranged one behind the other, as are similar to the exemplary embodiments in FIGS. 1 to 6.
- the contact element 5 located in the foreground largely covers all further contact elements, since in this exemplary embodiment they are essentially congruent.
- the contact elements 5 differ only in the design of the second lever arm 5b.
- the second lever arms 5b of the contact elements 5, which in the illustration shown are located behind the contact element 5 shown in the foreground, are each designed in such a way that they differ to different extents from the insertion direction of the plug. protrude kelements 3 into the receptacle 4 of the socket 1. The result of this is that the contact element 5 is first deflected, the second lever arm 5b of which projects furthest to the right in the illustration according to FIG. The other contact elements 5 become correspondingly when one is inserted
- Plug element 3 brought into contact with the front edge of plug element 3 later and consequently also only later deflected. As a result, there is also a later contact time of the respective first lever arms 5a of the different contact elements 5 (which are designed to be identical in this exemplary embodiment).
- a plug-in element 3 such as a chip card
- its contact surfaces 2, which are provided for contacting a supply potential are first brought into contact with corresponding first lever arms 5a before further contact surfaces 2 of the Plug element 3 can be contacted with corresponding first lever arms 5.
- the plug element 3 can be connected to ground first, then to a positive or negative supply potential before further signals can be transmitted to the plug element 3 via other contact surfaces 2, which could otherwise lead to malfunctions.
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- 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)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997109231 DE19709231C1 (de) | 1997-03-06 | 1997-03-06 | Steckbuchse zur Kontaktierung wenigstens einer Kontaktfläche in einer Oberfläche eines Steckelementes |
DE19709231.4 | 1997-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998039724A2 true WO1998039724A2 (de) | 1998-09-11 |
WO1998039724A3 WO1998039724A3 (de) | 1998-12-10 |
Family
ID=7822478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/000645 WO1998039724A2 (de) | 1997-03-06 | 1998-03-04 | Steckbuchse zur kontaktierung wenigstens einer kontaktfläche in einer oberfläche eines steckelementes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19709231C1 (de) |
WO (1) | WO1998039724A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19843708A1 (de) * | 1998-09-23 | 2000-04-27 | Siemens Ag | Einrichtung zur lösbaren Montage eines elektronischen Bauteils |
DE19847843A1 (de) * | 1998-10-16 | 2000-05-04 | Siemens Ag | Halterung |
DE10037744A1 (de) * | 2000-08-02 | 2002-02-14 | Siemens Ag | Gerät mit Chipkarte |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2952442A1 (de) * | 1978-12-27 | 1980-07-17 | Cii Honeywell Bull | Abtastgeraet fuer tragbare datentraeger, wie kreditkarten o.dgl. |
DE3823689A1 (de) * | 1988-07-13 | 1990-01-18 | Alfred Gundermann | Lese- und uebertragungsgeraet fuer elektrische schaltungen beinhaltende karten |
EP0554821A1 (de) * | 1992-02-04 | 1993-08-11 | The Whitaker Corporation | Chipkartenverbinder |
DE4303031A1 (de) * | 1993-02-03 | 1994-08-04 | Amphenol Tuchel Elect | Chipkartenleser für Endlagenschalter |
EP0727758A1 (de) * | 1994-08-31 | 1996-08-21 | Oki Electric Industry Company, Limited | Chipkartenleser |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4010398A1 (de) * | 1990-03-31 | 1991-10-10 | Stocko Metallwarenfab Henkels | Vorrichtung zum elektrischen kontaktieren einer ic-memory-karte mit einem elektronischen geraet |
FR2695515B1 (fr) * | 1992-09-09 | 1994-11-10 | Francelco Sa | Connecteur électrique pour carte à microcircuit. |
-
1997
- 1997-03-06 DE DE1997109231 patent/DE19709231C1/de not_active Expired - Fee Related
-
1998
- 1998-03-04 WO PCT/DE1998/000645 patent/WO1998039724A2/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2952442A1 (de) * | 1978-12-27 | 1980-07-17 | Cii Honeywell Bull | Abtastgeraet fuer tragbare datentraeger, wie kreditkarten o.dgl. |
DE3823689A1 (de) * | 1988-07-13 | 1990-01-18 | Alfred Gundermann | Lese- und uebertragungsgeraet fuer elektrische schaltungen beinhaltende karten |
EP0554821A1 (de) * | 1992-02-04 | 1993-08-11 | The Whitaker Corporation | Chipkartenverbinder |
DE4303031A1 (de) * | 1993-02-03 | 1994-08-04 | Amphenol Tuchel Elect | Chipkartenleser für Endlagenschalter |
EP0727758A1 (de) * | 1994-08-31 | 1996-08-21 | Oki Electric Industry Company, Limited | Chipkartenleser |
Also Published As
Publication number | Publication date |
---|---|
WO1998039724A3 (de) | 1998-12-10 |
DE19709231C1 (de) | 1998-06-10 |
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