EP1207588A1 - Connecteur électrique pour cable plat ou circuit imprimé flexible - Google Patents

Connecteur électrique pour cable plat ou circuit imprimé flexible Download PDF

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Publication number
EP1207588A1
EP1207588A1 EP01125673A EP01125673A EP1207588A1 EP 1207588 A1 EP1207588 A1 EP 1207588A1 EP 01125673 A EP01125673 A EP 01125673A EP 01125673 A EP01125673 A EP 01125673A EP 1207588 A1 EP1207588 A1 EP 1207588A1
Authority
EP
European Patent Office
Prior art keywords
contact
film
electrical connector
connector according
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01125673A
Other languages
German (de)
English (en)
Other versions
EP1207588B1 (fr
Inventor
Josef Woller
Gheorghe Hotea
Claudius Rieder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Germany GmbH
Original Assignee
Tyco Electronics AMP GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Electronics AMP GmbH filed Critical Tyco Electronics AMP GmbH
Publication of EP1207588A1 publication Critical patent/EP1207588A1/fr
Application granted granted Critical
Publication of EP1207588B1 publication Critical patent/EP1207588B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2442—Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/88—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting manually by rotating or pivoting connector housing parts

Definitions

  • the present invention relates to an electrical connector for flexible Flat cable or flexible printed circuit boards according to the preamble of claim 1.
  • Typical electrical connectors for flexible flat cables (FFC) or flexible printed circuit boards (FPC) have an insulating or dielectric housing that has an insertion opening for defines the film with the conductor tracks embedded in it.
  • a variety of foil contacts mounted in the housing which are essentially are arranged parallel to each other. Contact zones of these foil contacts are in the insertion opening so that they contact conductive areas of the foil cable can.
  • the housing often also includes a pressure bracket, which by one "Open” state in which the film can be inserted into the insertion opening in one "Closed” state can be moved using the film and its connectors are pressed against the contact areas of the foil contacts.
  • European patent EP 0 696 090 B1 describes an electrical connector for flexible circuit boards on another circuit board, such as a printed circuit board PCB, is mounted.
  • the connector contains a housing with an insertion opening and a plurality of contact elements so arranged in the housing are that spring contact parts of the contact elements protrude into the insertion opening.
  • To the A contact area is provided for contact elements.
  • a pressure bracket that is on the Support area is rotatable from an open position to a pressure position has one Pressure edge, which, when the pressure bracket is moved into the pressure position, in the opposite direction to the insertion direction of the film moves and the film against presses the spring contact parts. This way the electrical connections made between the film and the contact elements.
  • a connector for printed circuit boards, especially for flexible ones like FPC or FFC, is the subject of European patent application EP 0 926 778 A2.
  • the connector has an insulating housing with a recess open at the top and base contacts, which are arranged in the housing at regular intervals and each have a resilient beam and an integrally connected arm.
  • Each bar has a conductive protrusion that protrudes into the recess and everyone Arm that extends into the recess along the top of the housing has a protrusion opposite pivotable end.
  • An insulated pressure cover that engages in the pivotable ends, is between a pressure position near the projections and an open position rotatable away from the protrusions.
  • the Swiveling ends lock the cover and press the flexible circuit board against the resilient beams.
  • the cover has cover contacts that can be rotated in the swiveling ends engage and correspond to the base contacts, so that the swivel ends, the cover contacts and the flexible printed circuit closed cover are electrically contacted.
  • the connector has a dielectric Housing with an insertion opening and a variety of electrical connections that in mounted on the housing and arranged along the insertion opening.
  • the connections have contact areas to contact the flat circuit traces.
  • a pressure bracket is movably mounted on the housing and changes its position between an open position in which the film can be inserted and one closed position, in which the film and its conductor tracks against the contact areas of the connections are pressed. Only some of the connections have retention connections with gripping elements that grip the flat circuit and fix it when the pressure bracket is open. Other connections do not contain any retention elements, so that the film can be inserted without force.
  • U.S. Patent 4,082,402 discloses a connector for a Crimp connection when connecting flexible conductor tracks.
  • the connection terminal is designed so that it penetrates the insulating jacket of the flexible conductor track and circling the trace to include both mechanical and electrical To create a connection.
  • the connection terminal has two opposite one another Pairs of sharp teeth that face each other after penetrating the slide bent so that they grip around the conductor track and make electrical contact.
  • a electrical connector for flexible ribbon cable which a variety of such terminals is used, that is, from the sharp teeth of the connection terminals Both the electrical contacting and the strain relief of the flexible film are guaranteed.
  • the object of the present invention is therefore to provide an electrical connector for a Specify film with embedded conductor tracks, which ensures reliable contact guaranteed and also a cheap manufacture and simplified assembly of the Components allowed.
  • An essential advantage of the electrical connector according to the invention is that that due to the special geometry of the foil contact, the normal contact force in comparison large areas is adjustable. Because the spring steel has relatively large deflections the contact arms allows different film thicknesses with the same Connector to be contacted. Since the direction is essentially perpendicular to the film surface Compressive force acting on the actuation area due to its transmission about the approximately U-shaped bent end portion of the first contact arm in the Contact zone is broken down into a normal and a parallel component, rubs when pressed of the foil contact, the contact zone of the first contact arm on the conductor track the film and thus removes any residues that impair electrical contact. Furthermore, the realization of the foil contacts from a stamped or bent Spring plate is a particularly inexpensive method of manufacture. In addition In the configuration according to the invention, the film contact forms a double spring which an open gap size and a constant spring characteristic enables.
  • the foil contacts have openings in which snaps into the housing with a suitable safety catch. hereby becomes a fully automatic assembly of the housing with the foil contacts allows.
  • the subdivision of the first contact arm via an elongated hole into two contact webs is reduced the insertion forces that occur. Low insertion forces are required to prevent waves or avoid tilting the film. This also enables realization good contact with the conductor tracks of the film.
  • connection zone is a solder connection trained so that the electrical connector according to the invention for applications in to which it has to be soldered.
  • the connector can be connected to various connection options, such as Action pin 90 ° and 180 °, SMD connection etc. can be adapted.
  • connection of the connector pin with the insertion funnel via a laser welding spot or mechanical non-positive locking mechanisms can prevent the Plug pin is inadvertently moved axially.
  • the above task is also accomplished by an electrical connector with the Features of claim 8 solved.
  • the main advantage of this invention electrical connector can be seen in the fact that the strain relief of the foil in one work step by pressing the film contacts by turning the pressure bracket is realized. In addition to the required assembly time, the number can also be increased the components are kept low.
  • the pressure bracket has at least one first opening, into which a corresponding locking lug of the housing engages and the The pressure bracket is fixed in a pre-locking position in which the film contacts are open. In this way it can be ensured that the electrical connector in the delivery state are ready for installation immediately.
  • the configuration of the support ribs stabilizing the housing is particularly advantageous as insertion aids for the film, because in this way the film is guided properly in the housing and thus a secure and confusion-free contact is ensured becomes.
  • This connector according to the invention offers the advantage of an economically particularly favorable and mechanically safe contact.
  • the actuation of the film contacts by a slide offers the advantage that the film contacts can be operated by a lateral movement and thus this Manufacturing step is easier to automate.
  • the slide on the plug part is replaced by a Locking hook secured so that it is ensured that the connector part in the delivery condition is already ready for installation.
  • One provides that the first latching hook that secures the slider in a pre-latched position is released by a pressure bar on the collar part, it is ensured that the film contacts only be actuated when the film is optimally positioned. To this In this way, incorrect contact can be largely avoided.
  • the slide has a second one Snap hook on which can be snapped into a recess on the housing. This will make it a safe one and not inadvertently detachable contacting of the film guaranteed.
  • Electrical connectors according to the present invention are required to between a flexible flat cable (FFC) or a flexible printed circuit board (FPC) and one other electronic component to establish a defined connection.
  • This Electronic component can, for example, an integrated circuit, an assembled PCB or another electrical cable.
  • the electrical contact to the connector is detachable (e.g. in form a socket arrangement) or cannot be removed (soldered connection).
  • the electrical connector 100 includes an insulating housing 101, which has an insertion opening 104 for a film 102 with flexible embedded therein Has conductor tracks, and at least one foil contact 106 with a contact zone 204 for contacting the conductor tracks, a connection zone 202 for connection to a electrical component and an actuation zone 212 for receiving mechanical Drucks.
  • This mechanical pressure is provided by a pressure bar 122, the a pressure bracket 108 is formed.
  • To insert the film 102 is in one Hinge 128 pivotable pressure bracket 108 opened so far that the Web 122 does not touch the actuation zone 212 of the film contact 106. In this State, the film contact 106 is relaxed in a contact zone 204, so that the film 102 can be inserted without effort.
  • FIG. 1A This state is shown in Fig. 1A.
  • FIG. 1B the pressure bracket 108 is tilted in the direction of the Foil contact 106, then the pressure web 122 comes with the actuation zone 212 of the foil contact 106 in contact and presses the foil contact together.
  • the pressure web 122nd mechanical pressure exerted on the actuation zone 212 of the foil contact 106 that the film is clamped in the contact zone of the film contact. simultaneously penetrate retaining webs 110, which are also integrally formed on the pressure bracket 108, the film 102 and secure it against a tensile force 111 exerted on the film.
  • the film contact has a contact zone for contacting the film conductor track 204 on.
  • the film is between the first and the second contact arm 206 or 208 inserted.
  • the foil contact 106 is made from one by stamping and bending Made of sheet metal, and is shaped so that an end portion 207 of the first contact arm 206 is bent substantially in a U-shape and with the first contact arm on two Connection points 218 is in plant.
  • a mechanical applied to the actuation zone 212 On the one hand, pressure causes the entire first to bend down Contact arm 206 and is also via the two connection points 218a and 218b forwarded to contact zone 204.
  • the film contact forms in the embodiment of the invention, a double spring 207 and 212, which is an open Gap size and a constant spring characteristic enables.
  • the connection zone is located opposite the end of the film contact 106 202, which establishes a connection to another electronic component. In the In the embodiment shown here, this connection zone 202 is designed as a soldering zone.
  • the second contact arm 208 has an opening in the vicinity of the connection zone 202, into which a corresponding locking lug snaps into place and the foil contact 106 fixed in the housing 101.
  • the foil contact 106 is composed of several (in this FIG. 2 for example three) contact elements 215 together, which can be separated by contact bridges 214 are interconnected.
  • FIG. 3 shows a section through the foil contact 106 in the vicinity of the contact zone 204.
  • No mechanical pressure acts on the actuation zone 212, so that a Foil (not shown) without effort between the two contact points 205A and 205B can be inserted.
  • Applied pressure P the first contact arm 206 deforms.
  • the two contact points 205A and 205B are pressed together or clamp a film between them yourself.
  • This compressed state of the foil contact 106 is shown in FIG. 4 shown.
  • Fig. 5 the two sectional images of Figs. 3 and 4 have now been made to fit superimposed.
  • FIG. 6 shows different views of the foil contact 106 according to a first embodiment in the bent and unbent state.
  • a punch tape eyelet 226 is removed after completion of the foil contact.
  • FIG. 7 and 8 show various views of the film contact in a perspective view 106 according to the first preferred embodiment.
  • 7 is a Representation before and FIG. 8 a representation after the removal of the punching band eyelet 226.
  • the foil contact 106 is composed of three contact elements 215A, B and C. composed, which are interconnected via two contact bridges 214. by separation one of the two contact bridges leads to the one shown in FIG. 9 Foil contact 106, which only consists of two contact elements 215A and 215B.
  • this last contact bridge 214 is also removed, the film contact is made 106 only from a single contact element 215A, as shown in FIG. 10 is.
  • the foil contact 106 can be connected to different conductor track geometries in a very simple manner and performance requirements are adjusted.
  • FIG. 11 shows a second preferred embodiment of a foil contact 106, in which the outermost edge of the end portion 207 of the first contact arm 206 is so shaped is that it comes into contact with the first contact arm 206 as a convex curve and establishes the second connection point 218 when on the actuation zone 212 mechanical pressure is exerted.
  • the Foil contact in the connection area 202 a soldering zone.
  • FIG. 12 A third preferred embodiment of the foil contact 106 is shown in FIG. 12. As can be seen in the various views and sectional views, the foil contact 106 an insertion opening 220, into which a suitable plug pin 222 is inserted becomes.
  • the connector can also be electronic Component a connector can be connected.
  • a connector can be connected.
  • solder contacts are out of the question. It can also have very different connector pin shapes be used and so a great flexibility in terms of connections another electronic component can be achieved.
  • FIG. 13 Different views of the foil contact 106 without inserted plug pin 222 according to the present embodiment, in Fig. 13 are bent and unbent State shown.
  • FIG. 14 illustrates in different views, as with the connection geometry according to the embodiment of FIGS. 12 and 13, two laser welding spots 224 for material bonding Fuse of the connector pin 222 can be used in the foil contact 106.
  • FIG. 15 shows that with the same shape of the insertion opening 220, very different ones Forms of connector pins 222 (here a so-called action pin) can be inserted can.
  • FIG. 16A represents the open state, in which the housing is ready for assembly
  • Fig. 16B shows the closed state So that the pressure bracket 108 in the ready for assembly shown in Fig. 116A Remains in position, a first opening 112 is provided on the pressure bracket 108 in FIG which engages a corresponding locking lug on the housing and the pressure bracket in one ready-to-assemble position.
  • the pressure bracket is folded down and snap into second openings 114 appropriate latches of the housing and fix the pressure bracket in the finished assembled position.
  • a stop 116 is formed on the housing. With the help of the attack 116 can be effectively prevented that excessive pressure forces on the film contacts be exercised inside the housing.
  • FIG. 17 shows a detailed view of the foil contacts 106 in the housing. It will be in the 17A and 17B illuminate two aspects of the invention: firstly, the film contacts 106, as shown in FIG. 17A, in different numbers and positions in the Housing are used. This allows different film widths to be taken into account become. On the other hand, foil contacts 106 can be made up of different numbers Contact elements 215 are used to meet different performance requirements to meet (see Fig. 17B).
  • Figure 18 shows another preferred embodiment of the present electrical Connector.
  • the support ribs 120 of the housing 101 that are needed to support the housing to give mechanical stability, shaped to be used as an insertion aid for the film can serve.
  • FIG. 18 it can be seen from FIG. 18 that according to a preferred Embodiment separators 118 are formed in the housing that the film contacts 106 electrically isolate from each other. Such dividers can on the one hand Prevent electrical breakthrough between the foil contacts. To serve others they do this, crosstalk via a capacitive coupling between the individual foil contacts 106 to avoid.
  • Fig. 19 all components of the electrical are again in the form of an exploded view Connector for a film with embedded flexible conductor tracks shown.
  • the individual assembly steps can be described using this illustration.
  • the foil contacts 106 are inserted into the housing in the insertion direction 124 and engage via the invisible openings 216 with the housing 101
  • the pressure bracket 108 is inserted into the hinge 128 in the direction of the arrow labeled 126 caught. Then the pressure bracket is tilted down until the Opening 112 latched to housing 101.
  • the connector 100 is in this position ready to pick up the slide.
  • the catch 112 is released and the pressure bracket 108 so far tilted down until it rests on the stop 116. In doing so, the pressure bars 122 lowered so that they actuate the film contacts 106. Penetrate at the same time the holding webs 110 the film, without the need for a pre-punched opening. The electrical contact is now made and the film is against pulling out secured by the retaining webs 110.
  • FIG. 20A and 20B The process of closing the pressure bracket 108 just described is shown in FIG. 20A and 20B again clearly.
  • the film contacts 106 are relieved because they do not come into contact with the pressure bars 122 come.
  • 20B shows how the foil contacts 106 pass through the pressure webs 122 are actuated, and in this way the film 102 is safely and firmly contacted. to Strain relief against a load on the film in direction 111 penetrate the Retaining webs 110 fix the film.
  • the housing 101 has a plug part 302 and one of them separate collar part 308.
  • the collar part 308 has a receiving opening 324 for the plug part 302, into which this can be inserted.
  • the film 102 is in the connector part 302 fixed.
  • the foil contacts 106 are mounted in the collar part 308, so that the film when inserting the connector part 302 between the first and the second Contact arm 206 and 208 of the film contacts 106 is positioned. The actuation of the foil contacts 106 takes place in this embodiment via a slide 304.
  • the plug part 302 is in two perspective views of FIGS. 22A and 22B shown. You can see openings on the front of the connector part, into which openings in the collar part stored foil contacts are inserted when assembling the housing.
  • the slider 304 is in the retracted position and is in this position secured by the locking hook 306. This ensures that the slide cannot be pushed forward and can be lost as long as the plug part 302 is not inserted into the collar part 308.
  • 22B is the insertion opening 328 shown for the film 102 in such a way that it is ready for installation for the reception of the film 102 is.
  • a rocker arm 320 is open and holding bars 322 are visible, which when folded down of the rocker arm 320 penetrate the inserted film and this against tensile load secure without pre-punched openings on the film are required.
  • Figure 23 shows a perspective view of the collar part 308.
  • the foil plug 106 is mounted in this collar part so that between the first and the second Contact arm 206 and 208 there is a sufficiently large gap to the film that in the Plug part is secured without being able to insert force.
  • a coding 312 ensures that the Plug part 302 can not be inserted into the collar part 308 reversed.
  • FIGS. 24A and 24B The plugging together of plug part 302 and collar part 308 is shown in FIGS. 24A and 24B clarifies.
  • the collar part 308 is open in this perspective view drawn.
  • the plug part 302 is inserted into the receiving opening 324 of the collar part introduced.
  • the slider 304 is through the locking hook 306 secured.
  • the slider 302 becomes up to the stops 330 inserted into the collar part 308, the locking hook 306 is through the pressure web 310 released and the slider 304 is displaceable in the direction 326. This will ensures that the contacts are not actuated until the film has been fully inserted can be done with the help of the pressure bar 310.
  • FIG. 25 The last step, namely the actuation of the foil contacts 106 by moving of the slider 304 in the direction 326 is shown in FIG. 25.
  • the collar part too 308 shown open.
  • the slide is in its final position via a latching hook 316 Position fixed on the collar part.
  • the connector 100 is now fully assembled and can be connected to another electronic component.
EP01125673A 2000-11-20 2001-10-26 Connecteur électrique pour cable plat ou circuit imprimé flexible Expired - Lifetime EP1207588B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10057401 2000-11-20
DE10057401 2000-11-20

Publications (2)

Publication Number Publication Date
EP1207588A1 true EP1207588A1 (fr) 2002-05-22
EP1207588B1 EP1207588B1 (fr) 2011-05-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01125673A Expired - Lifetime EP1207588B1 (fr) 2000-11-20 2001-10-26 Connecteur électrique pour cable plat ou circuit imprimé flexible

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Country Link
US (1) US6568955B2 (fr)
EP (1) EP1207588B1 (fr)
JP (1) JP2002198112A (fr)
DE (1) DE50115867D1 (fr)

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JP5548850B2 (ja) 2012-07-13 2014-07-16 日本航空電子工業株式会社 コンタクト、コネクタ、および接続装置
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CN116053829A (zh) * 2021-10-28 2023-05-02 上海海思技术有限公司 一种排线连接器及电子设备

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US4082402A (en) 1974-01-09 1978-04-04 Amp Incorporated Flat flexible cable terminal and electrical connection
US3989336A (en) 1975-04-28 1976-11-02 Molex Incorporated Flexible circuit connector assembly
US4850904A (en) * 1987-05-08 1989-07-25 Minnesota Mining And Manufacturing Company Connector for telephone cables
US4938713A (en) * 1987-05-14 1990-07-03 Amp Incorporated Electrical terminal for wave crimp termination of flat power cable
US5240430A (en) * 1991-10-31 1993-08-31 Amp Incorporated Electrical connector for cable to circit board application

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US20020081883A1 (en) 2002-06-27
US6568955B2 (en) 2003-05-27
EP1207588B1 (fr) 2011-05-04
DE50115867D1 (de) 2011-06-16
JP2002198112A (ja) 2002-07-12

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