WO1998009486A1 - Device with an electrical circuit for controlling the restraining elements of a vehicle - Google Patents

Device with an electrical circuit for controlling the restraining elements of a vehicle Download PDF

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Publication number
WO1998009486A1
WO1998009486A1 PCT/DE1997/001724 DE9701724W WO9809486A1 WO 1998009486 A1 WO1998009486 A1 WO 1998009486A1 DE 9701724 W DE9701724 W DE 9701724W WO 9809486 A1 WO9809486 A1 WO 9809486A1
Authority
WO
WIPO (PCT)
Prior art keywords
lead frame
conductor
connection
circuit arrangement
vehicle
Prior art date
Application number
PCT/DE1997/001724
Other languages
German (de)
French (fr)
Inventor
Markus Christoph
Josef Dirmeyer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998009486A1 publication Critical patent/WO1998009486A1/en

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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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
    • H05K3/326—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor the printed circuit having integral resilient or deformable parts, e.g. tabs or parts of flexible circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0364—Conductor shape
    • H05K2201/0382—Continuously deformed conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0388—Other aspects of conductors
    • H05K2201/0397—Tab
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/20—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
    • H05K3/202—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern using self-supporting metal foil pattern
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4092—Integral conductive tabs, i.e. conductive parts partly detached from the substrate

Definitions

  • a device with an electrical circuit arrangement in which a leadframe punched out of a metal strip connects electrical components to one another in an electrically conductive manner.
  • the known device has plug pins formed in one piece with the lead frame for receiving a mating connector with sockets.
  • a system for controlling a restraint device of a vehicle in which a control device arranged centrally in the vehicle is connected via a data line to an external ignition circuit arranged in the vicinity of the occupant protection means.
  • the central control unit detects an impact and transmits a coded ignition command to the outsourced ignition circuit, which decodes the incoming messages and, upon detection of an ignition command, transmits the energy provided on site by an energy storage capacitor to an igniter of the restraint device.
  • the object of the present invention is to provide a device with an electrical circuit arrangement for controlling a restraining means which, as a control device arranged spatially at the igniter, permits the connection of a conventional igniter via a mechanical interface with a high degree of contact reliability and at the same time takes up little space.
  • Fig 3 a view of part of a lead frame with a socket
  • FIG. 4 an exploded view of a device according to the invention
  • FIG. 5 a perspective view of the device according to FIG. 4, and
  • FIG. 1 shows, according to WO96 / 07302, a lead frame 12 with metal strips which serve as conductor tracks 121 for connecting electrical components 11 which are attached to the lead frame 12 - for example soldered, bonded or glued or soldered as an SMD component.
  • the components 11 are designed, for example, as an integrated circuit, as a sensor, as a resistor or as a capacitor.
  • Parts of the lead frame 12 are designed as connector pins 126.
  • the lead frame 12 is extrusion-coated for protection after all components have been mounted on the lead frame 12 and connected to it in an electrically conductive manner.
  • the lead frame 12 is thus surrounded by a watertight plastic housing firmly connected to it. In this housing, for example, a connector pin 126 surrounding Injection molded connector part or holders 111 for components.
  • the conductor tracks 121 can be mechanically connected to one another via injection-molded plastic bridges, as a result of which good insulation between the conductor tracks and mechanical strength of the lead frame 12 is ensured.
  • the unnecessary conductive connections in the lead frame 12 are subsequently punched out.
  • the circuit arrangement 1 can also achieve sufficient mechanical strength according to FIG. 1 simply by fastening the components 11. If the lead frame 12 has large edge regions 13 which extend beyond the actual region of the connection structures, then electromagnetic shielding can also be achieved by bending these edge regions 13. These edge areas 13 can also serve as cooling surfaces.
  • connection means for receiving and electrically contacting a supplied conductor or plug pin are to be provided according to the invention.
  • FIGs 2 and 3 advantageous developments of the invention are shown, in Figure 2 one piece with the
  • Lead frame 12 formed crimp connection part 1221 as connection means 122 and in FIG. 3 a bushing 1231 formed in one piece with lead frame 12 is shown. Both Figures 2 and 3 show the lead frame 12 immediately after punching from the metal strip. After placing a partially stripped conductor on the crimp connection part 1221 according to FIG.
  • the tabs of a crimp sleeve 12211 and an insulating sleeve 12212 of the crimp connection part 1221 which still protrude planarly, are bent over with a suitable tool, so that the crimp connection part 1221 has a shape according to FIG 4 assumes and when the conductor 2 is supplied it is electrically conductively connected to the lead frame 12 and crimped mechanically by the crimp sleeve 12211, and a firm mechanical connection of the cable consisting of conductor 2 and conductor insulation 21 to the lead frame 12 is achieved by the conductor insulation clamped by the insulating sleeve 12212 21 is guaranteed.
  • the tab of the socket 1231 which still protrudes planar in FIG. 3 is bent with a suitable bending tool to form a sleeve - the socket according to FIG. 4 - which is used to hold, in particular, a thick conductor - preferably a plug pin.
  • a U is preferably punched out of the tab of the socket 1231 so that the inner region of the U can be bent into the socket interior and thus acts as a spring tongue 12311 and holds plug pins inserted into the socket 1231.
  • the spring tongue and in particular the entire bushing 1231 are preferably made of copper beryllium, which has a high degree of rigidity, which leads to a long-lasting, constant spring action.
  • the lead frame 12 can alternatively or additionally be provided with an insulation displacement connection part as connection means for a conductor.
  • the insulation displacement connector has sharp serrations that cut through the conductor insulation in a pressed-on conductor with conductor insulation and thus contact the conductor and also hold it mechanically.
  • connection means a web formed in one piece with the lead frame is provided proposed on which a conductor is attached by welding or soldering.
  • All connecting means have in common that due to their one-piece design with the lead frame, there is only a single mechanical interface between the lead frame as the circuit carrier and the supplied conductor / plug pin, and not two mechanical interfaces, such as, for example, in the case of a socket that is swung onto the lead frame or a device with one printed circuit board and a plug part, e.g. between conductor and socket and between socket and lead frame or between connector pin and connector pin and between connector pin and printed circuit board.
  • the durability and safety of the electrical contact between the conductor and the circuit is thus significantly improved.
  • only one manufacturing step is required to create the connection, since the connection means is also produced when the lead frame is punched out. Consequently, the circuit arrangement takes up little space due to the use of the lead frame, which is particularly advantageous when the device is arranged in a vehicle.
  • FIG. 4 an apparatus according to the invention is shown in an exploded view, each with two sockets 1231 and crimp connection parts 1221, which are produced in one piece with the lead frame 12.
  • the circuit arrangement 1 according to FIG. 4 is for triggering a restraining means such as e.g. an airbag or a belt tensioner in a vehicle (see also FIG. 6).
  • a restraining means such as e.g. an airbag or a belt tensioner in a vehicle (see also FIG. 6).
  • Circuit arrangements are arranged close to the restraining means. They decode and check a coded trigger command delivered by a control unit for occupant protection located centrally in the vehicle.
  • the transmission line which ends with the conductor 2 in the circuit arrangement 1, is preferably a data bus trained so that several restraint devices can be controlled via a single bus line.
  • FIG. 6 shows a conventional igniter 3 which has plug pins 31 for the electrical connection. The igniter 3 is inserted with its plug pins 31 into the sockets 1231 of the circuit arrangement 1.
  • such a circuit arrangement 1 intended for triggering purposes has bushes 1231 formed integrally with the lead frame 12 for receiving conventional igniters 3 and connecting means such as crimp connectors 1221 designed integrally with the lead frame 12 for receiving the conductors 2 coming from the control device mechanical interfaces between conductor 2 and igniter 3 are required, which means an enormous gain in terms of reliability, particularly in safety-critical applications such as an occupant protection system.
  • connection means 122 or further connection means 123 the metal strip or that from the
  • At least the inner circumference of a socket is preferably gold-plated in order to create good and corrosion-free contact transitions.
  • the area of the lead frame 12 carrying the components is e.g. coated with aluminum to have good properties for
  • Connection means 122 such as crimp connection parts 1221 are preferably made of a hard material such as steel, so that the conductor 2 is also strong
  • Lead frame 12 may be coated with different materials in different areas.
  • FIG. 5 shows the circuit arrangement 1 according to FIG. 4 surrounded by a plastic body 5. If, according to FIG. 5, part of the supplied cable is also encapsulated / encapsulated by the plastic body, the mechanical connection to the cable is further stabilized.
  • the device according to FIG. 5 has the form of a plug, into whose sockets 1231 an igniter is inserted, and which contains a circuit arrangement which is designed to be extremely reliable.
  • a ferrite 6 is arranged above the crimp connection parts 1221 and is intended to protect the circuit arrangement 1 against electrostatic charges.
  • the further connection means can also be formed in one piece with the lead frame as a socket or plug pin for receiving a plug pin or a socket, to which the conductor of the data line is electrically connected, instead of directly receiving a conductor of the cable harness.
  • the further control device is preferably the control device arranged centrally in the vehicle.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Air Bags (AREA)

Abstract

This invention concerns a device with an electrical circuit (1) with a grid (12) stamped out of a metal band which conductively connects electrical components (11). The stamped grid (12) has connecting means (122) for receiving an inserted conductor (2) and establishing electrical contact with it.

Description

Beschreibungdescription
Gerät mit einer elektrischen Schaltungsanordnung zum Steuern eines Rückhaltemittels eines FahrzeugsDevice with an electrical circuit arrangement for controlling a restraint of a vehicle
Aus der gattungsbildenden O96/07302 ist ein Gerät mit einer elektrischen Schaltungsanordung bekannt, bei dem ein aus einem Metallband gestanztes Stanzgitter elektrische Bauelemente elektrisch leitend miteinander verbindet . Das bekannte Gerät weist einstückig mit dem Stanzgitter ausgebildete Steckerstifte zur Aufnahme eines Gegensteckers mit Buchsen auf .From the generic O96 / 07302 a device with an electrical circuit arrangement is known in which a leadframe punched out of a metal strip connects electrical components to one another in an electrically conductive manner. The known device has plug pins formed in one piece with the lead frame for receiving a mating connector with sockets.
Aus der EP 0 471 871 Bl ist ein System zum Steuern eines Rückhaltemittels eines Fahrzeugs bekannt, bei dem ein zentral im Fahrzeug angeordnetes Steuergerät über eine Datenleitung mit einer ausgelagerten und in räumlicher Nähe des Insassenschutzmittels angeordneten Zündschaltung verbunden ist. Das zentrale Steuergerät erkennt einen Aufprall und übermittelt einen codierten Zündbefehl an die ausgelagerte Zündschaltung, die die eintreffenden Nachrichten decodiert und bei Erkennen eines Zündbefehls die vor Ort von einem Energiespiecherkondensator bereitgestellte Energie auf einen Anzünder des Rückhaltemittels überträgt.From EP 0 471 871 B1 a system for controlling a restraint device of a vehicle is known, in which a control device arranged centrally in the vehicle is connected via a data line to an external ignition circuit arranged in the vicinity of the occupant protection means. The central control unit detects an impact and transmits a coded ignition command to the outsourced ignition circuit, which decodes the incoming messages and, upon detection of an ignition command, transmits the energy provided on site by an energy storage capacitor to an igniter of the restraint device.
Aufgabe der vorliegenden Erfindung ist es, ein Gerät mit einer elektrischen Schaltungsanordnung zum Steuern eines Rückhaltemittels zu schaffen, das als räumlich bei dem Anzünder angeordnetes Steuergerät das Anbinden eines herkömmlichen Anzünders über eine mechanische Schnittstelle mit einer hohen Kontaktsicherheit gestattet und gleichzeitig nur geringen Bauraum beansprucht .The object of the present invention is to provide a device with an electrical circuit arrangement for controlling a restraining means which, as a control device arranged spatially at the igniter, permits the connection of a conventional igniter via a mechanical interface with a high degree of contact reliability and at the same time takes up little space.
Die Aufgabe wird durch die Merkmale des Patentanspruchs 1 ge- löst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet .The object is achieved by the features of patent claim 1. Advantageous developments of the invention are characterized in the subclaims.
Ausführungsbeispiele der Erfindung werden anhand der Zeich- nung erläutert. Es zeigen:Exemplary embodiments of the invention are explained on the basis of the drawing. Show it:
Fig 1: einen Aufblick auf ein in einem fortlaufenden Band angebrachtes Stanzgitter mit elektrischen Bauteilen,1: an overview of a lead frame with electrical components attached in a continuous belt,
Fig 2 : einen Aufblick auf einen Teil eines Stanzgitters mit einem Crimp-Anschlußteil,2: an overview of part of a lead frame with a crimp connection part,
Fig 3 : einen Aufblick auf einen Teil eines Stanzgitters mit einer BuchseFig 3: a view of part of a lead frame with a socket
Fig 4 : eine Explosivdarstellung eines erfindungsgemäßen Geräts Fig 5: eine perspektivische Ansicht des Geräts gemäß Figur 4, und4: an exploded view of a device according to the invention; FIG. 5: a perspective view of the device according to FIG. 4, and
Fig 6 : eine weitere Explosivdarstellung des Geräts gemäß Figur .6: another exploded view of the device according to FIG.
Gleiche Elemente sind in den Figuren figurenübergreifend durch die gleichen Bezugszeichen gekennzeichnet.Identical elements are identified in the figures by the same reference symbols in all figures.
Fig. 1 zeigt gemäß der WO96/07302 ein Stanzgitter 12 mit Metallstreifen, die als Leiterbahnen 121 zur Verbindung von elektrischen Bauelementen 11 dienen, welche auf dem Stanzgitter 12 angebracht - beispielsweise gelötet, gebondet oder als SMD-Bauele ente geklebt oder gelötet - sind. Die Bauelemente 11 sind beispielsweise als integrierte Schaltung, als Sensor, als Widerstand oder als Kondensator ausgebildet. Teile des Stanzgitters 12 sind als Steckerstifte 126 ausgebildet . Das Stanzgitter 12 wird zum Schutz mit Kunststoff umspritzt, nachdem alle Bauelemente auf dem Stanzgitter 12 montiert und mit ihm elektrisch leitend verbunden. Damit ist das Stanzgitter 12 von einem fest mit ihm verbundenen, wasserdichten Kunststoffgehäuse umgeben. In dieses Gehäuse werden beispielsweise ein die Steckerstifte 126 umgebendes Steckerteil oder Halterungen 111 für Bauelemente miteingespritzt .1 shows, according to WO96 / 07302, a lead frame 12 with metal strips which serve as conductor tracks 121 for connecting electrical components 11 which are attached to the lead frame 12 - for example soldered, bonded or glued or soldered as an SMD component. The components 11 are designed, for example, as an integrated circuit, as a sensor, as a resistor or as a capacitor. Parts of the lead frame 12 are designed as connector pins 126. The lead frame 12 is extrusion-coated for protection after all components have been mounted on the lead frame 12 and connected to it in an electrically conductive manner. The lead frame 12 is thus surrounded by a watertight plastic housing firmly connected to it. In this housing, for example, a connector pin 126 surrounding Injection molded connector part or holders 111 for components.
Zur gegenseitigen Fixierung von Leiterbahnen 121 des Stanzgitters 12 können die Leiterbahnen 121 über gespritzte Kunststoffbrücken miteinander mechanisch verbunden werden, wodurch eine gute Isolation zwischen den Leiterbahnen und eine mechanische Festigkeit des Stanzgitters 12 gewährleistet ist. Die nicht erforderlichen leitenden Verbindungen im Stanzgitter 12 werden nachfolgend ausgestanzt. Die Schaltungsanordnung 1 kann aber auch gemäß Figur 1 bloß durch das Befestigen der Bauelemente 11 ausreichende mechanische Festigkeit erlangen. Wenn das Stanzgitter 12 große Randbereiche 13 aufweist, die über den eigentlichen Bereich der Verbindungsstrukturen hinausreichen, so kann durch Umbiegen dieser Randbereiche 13 auch eine elektromagnetische Abschirmung erreicht werden. Diese Randbereiche 13 können auch als Kühlflächen dienen.For the mutual fixing of conductor tracks 121 of the lead frame 12, the conductor tracks 121 can be mechanically connected to one another via injection-molded plastic bridges, as a result of which good insulation between the conductor tracks and mechanical strength of the lead frame 12 is ensured. The unnecessary conductive connections in the lead frame 12 are subsequently punched out. However, the circuit arrangement 1 can also achieve sufficient mechanical strength according to FIG. 1 simply by fastening the components 11. If the lead frame 12 has large edge regions 13 which extend beyond the actual region of the connection structures, then electromagnetic shielding can also be achieved by bending these edge regions 13. These edge areas 13 can also serve as cooling surfaces.
Zu den Vorteilen einer solchen Schaltungsanordnung und zurThe advantages of such a circuit arrangement and
Fertigung solcher Stanzgitter am laufenden Band wird auf die WO96/07302 verwiesen, deren Inhalt damit als eingeführt gilt.Manufacturing of such lead frames on the conveyor belt is referred to WO96 / 07302, the content of which is therefore considered to have been introduced.
Sollen von außen zugeführte Leiter oder Steckerstifte elektrisch und mechnisch mit einer solchen Schaltungsanordnung verbunden werden, sind erfindungsgemäß Anschlußmittel zur Aufnahme und elektrischen Kontaktierung eines zugeführten Leiters oder Steckerstif es vorzusehen. In den Figuren 2 und 3 sind vorteilhafte Weiterbildungen der Erfindung aufgezeigt, wobei in Figur 2 ein einstückig mit demIf conductors or plug pins supplied from the outside are to be electrically and mechanically connected to such a circuit arrangement, connection means for receiving and electrically contacting a supplied conductor or plug pin are to be provided according to the invention. In Figures 2 and 3 advantageous developments of the invention are shown, in Figure 2 one piece with the
Stanzgitter 12 ausgebildetes Crimp-Anschlußteil 1221 als Anschlußmittel 122 und in Figur 3 eine einstückig mit dem Stanzgitter 12 ausgebildete Buchse 1231 dargestellt ist. Beide Figuren 2 und 3 zeigen das Stanzgitter 12 unmittelbar nach dem Stanzen aus dem Metallstreifen. Nach dem Auflegen eines zum Teil abisolierten Leiters auf das Crimp-Anschlußteil 1221 gemäß Figur 2 werden mit geeignetem Werkzeug die noch planar abstehenden Lappen einer Crimphülse 12211 und einer Isolierhülse 12212 des Crimp-Anschlußteils 1221 umgebogen, sodaß das Crimp-Anschlußteil 1221 ein Gestalt gemäß Figur 4 annimmt und bei zugeführtem Leiter 2 selbiger durch die Crimphülse 12211 elektrisch leitend mit dem Stanzgitter 12 verbunden und mechanisch eingeklemmt ist, und eine feste mechanische Verbindung des aus Leiter 2 und Leiterisolierung 21 bestehenden Kabels mit dem Stanzgitter 12 durch die durch die Isolierhülse 12212 festgeklemmte Leiterisolierung 21 gewährleistet ist.Lead frame 12 formed crimp connection part 1221 as connection means 122 and in FIG. 3 a bushing 1231 formed in one piece with lead frame 12 is shown. Both Figures 2 and 3 show the lead frame 12 immediately after punching from the metal strip. After placing a partially stripped conductor on the crimp connection part 1221 according to FIG. 2, the tabs of a crimp sleeve 12211 and an insulating sleeve 12212 of the crimp connection part 1221, which still protrude planarly, are bent over with a suitable tool, so that the crimp connection part 1221 has a shape according to FIG 4 assumes and when the conductor 2 is supplied it is electrically conductively connected to the lead frame 12 and crimped mechanically by the crimp sleeve 12211, and a firm mechanical connection of the cable consisting of conductor 2 and conductor insulation 21 to the lead frame 12 is achieved by the conductor insulation clamped by the insulating sleeve 12212 21 is guaranteed.
Der in Figur 3 noch planar abstehende Lappen der Buchse 1231 wird mit einem geeigneten Biegewerkzeug zu einer Hülse - eben der Buchse gemäß Figur 4 - umgebogen, die zur Aufnahme insbesondere eines dick ausgebildeten Leiters - vorzugsweise also eines Steckerstiftes - dient. Aus dem Lappen der Buchse 1231 wird vorzugsweise ein U herausgestanzt, sodaß der innere Bereich des U's in das Buchseninnere gebogen werden kann und damit als Federzunge 12311 wirkt und in die Buchse 1231 eingeführte Steckerstif e festhält. Vorzugsweise ist dabei die Federzunge und insbesondere die gesamte Buchse 1231 aus Kupfer-Berillium hergestellt, das eine hohe Steifigkeit aufweist, was zu einer langandauernden, gleichbleibenden Federwirkung führt .The tab of the socket 1231 which still protrudes planar in FIG. 3 is bent with a suitable bending tool to form a sleeve - the socket according to FIG. 4 - which is used to hold, in particular, a thick conductor - preferably a plug pin. A U is preferably punched out of the tab of the socket 1231 so that the inner region of the U can be bent into the socket interior and thus acts as a spring tongue 12311 and holds plug pins inserted into the socket 1231. The spring tongue and in particular the entire bushing 1231 are preferably made of copper beryllium, which has a high degree of rigidity, which leads to a long-lasting, constant spring action.
Das Stanzgitter 12 kann alternativ oder zusätzlich mit einem Schneid-Klemm-Anschlußteil als Anschlußmittel für einen Leiter versehen werden. Das Schneid-Klemm-Anschlußteil weist dabei scharfe Zacken auf, die bei einem aufgepreßten Leiter mit Leiterisolierung die Leiterisolierung durchtrennen und somit den Leiter kontaktieren und auch mechanisch festhalten.The lead frame 12 can alternatively or additionally be provided with an insulation displacement connection part as connection means for a conductor. The insulation displacement connector has sharp serrations that cut through the conductor insulation in a pressed-on conductor with conductor insulation and thus contact the conductor and also hold it mechanically.
Als weitere mögliche Ausbildung des Anschlußmittels wird ein einstückig mit dem Stanzgitter ausgebildeter Steg vorgeschlagen auf dem ein Leiter durch Schweißen oder Löten befestigt wird.As a further possible design of the connection means, a web formed in one piece with the lead frame is provided proposed on which a conductor is attached by welding or soldering.
Allen Anschlußmitteln ist gemein, daß aufgrund ihrer einstückigen Ausbildung mit dem Stanzgitter lediglich eine einzige mechanische Schnittstelle zwischen dem Stanzgitter als Schaltungsträger und dem zugeführten Leiter/Steckerstift existiert, und nicht zwei mechanische Schnittstellen wie beispielsweise bei einer auf das Stanzgitter aufgeschwießten Buchse oder einem Gerät mit einer gedruckten Leiterplatte und einem Steckerteil, z.B. zwischen Leiter und Buchse und zwischen Buchse und Stanzgitter oder zwischen Steckerstift und Steckerpin und zwischen Steckerpin und gedruckter Leiterplatte. Damit ist die Dauerhaftigkeit und Sicherheit der elektrischen Kontaktierung zwischen dem Leiter und der Schaltung wesentlich verbessert. Zum weiteren ist lediglich ein Herstellungsschritt zum Erstellen der Verbindung erforderlich, da das Anschlußmittel beim Ausstanzen des Stanzgitters mithergestellt wird. Mithin beansprucht die Schaltungsanordnung durch die Verwendung des Stanzgitters nur geringen Bauraum, was insbesondere bei einer Anordnung des Geräts in einem Fahrzeug von großem Vorteil ist.All connecting means have in common that due to their one-piece design with the lead frame, there is only a single mechanical interface between the lead frame as the circuit carrier and the supplied conductor / plug pin, and not two mechanical interfaces, such as, for example, in the case of a socket that is swung onto the lead frame or a device with one printed circuit board and a plug part, e.g. between conductor and socket and between socket and lead frame or between connector pin and connector pin and between connector pin and printed circuit board. The durability and safety of the electrical contact between the conductor and the circuit is thus significantly improved. Furthermore, only one manufacturing step is required to create the connection, since the connection means is also produced when the lead frame is punched out. Consequently, the circuit arrangement takes up little space due to the use of the lead frame, which is particularly advantageous when the device is arranged in a vehicle.
In Figur 4 ist ein erfindungsgeäßes Gerät in Explosivdarstellung gezeigt, mit je zwei einstückig mit dem Stanzgitter 12 hergestellte Buchsen 1231 und Crimp- Anschlußteilen 1221. Die Schaltungsanordnung 1 gemäß Figur 4 ist zum Auslösen eines Rückhaltemittels wie z.B. eines Airbags oder eines Gurtstrammers in einem Fahrzeug ausgebildet (siehe auch Figur 6) . SolcheIn FIG. 4, an apparatus according to the invention is shown in an exploded view, each with two sockets 1231 and crimp connection parts 1221, which are produced in one piece with the lead frame 12. The circuit arrangement 1 according to FIG. 4 is for triggering a restraining means such as e.g. an airbag or a belt tensioner in a vehicle (see also FIG. 6). Such
Schaltungsanordnungen sind nahe bei den Rückhaltemitteln angeordnet . Sie decodieren und überprüfen einen von einem zentral im Fahrzeug angeordneten Steuergerät für den Insassenschutz gelieferten codierten Auslösebefehl. Die Übertragungsleitung, die mit dem Leiter 2 bei der Schaltungsanordnung 1 endet, ist vorzugsweise als Datenbus ausgebildet, sodaß meherere Rückhaltemittel über eine einzige Busleitung angesteuert werden können.Circuit arrangements are arranged close to the restraining means. They decode and check a coded trigger command delivered by a control unit for occupant protection located centrally in the vehicle. The transmission line, which ends with the conductor 2 in the circuit arrangement 1, is preferably a data bus trained so that several restraint devices can be controlled via a single bus line.
Bei einem als korrekt erkannten Auslösesignal wird in einem Zündkondensator der Schaltungsanordnung 1 gespeicherte Energie zu einem mit der Schaltungsanordnung 1 elektrisch verbundenen und Zündmaterial enthaltenden Anzünder 3 übertragen. In Figur 6 ist ein herkömmlicher Anzünder 3 gezeigt der Steckerstifte 31 zum elektrsichen Anschluß aufweist. Der Anzünder 3 wird mit seinen Steckerstiften 31 in die Buchsen 1231 der Schaltungsanordnung 1 eingeführt. Vorzugsweise weist also eine solche zu Auslösezwecken bestimmte Schaltungsanordnung 1 einstückig mit dem Stanzgitter 12 ausgebildete Buchsen 1231 für die Aufnahme herkömmlicher Anzünder 3 auf und einstückig mit dem Stanzgitter 12 ausgebildete Anschlußmittel wie Crimpverbinder 1221 für die Aufnahme der vom Steuergerät kommenden Leiter 2. Damit sind lediglich zwei mechanische Schnittstellen zwischen Leiter 2 und Anzünder 3 erforderlich, was insbesondere bei sicherheitskritischen Anwendungen wie einem Insassenschutzsystem einen enormen Gewinn in Punkto Ausfallsicherheit bedeutet.If a trigger signal is recognized as being correct, energy stored in an ignition capacitor of the circuit arrangement 1 is transmitted to an igniter 3 which is electrically connected to the circuit arrangement 1 and contains ignition material. FIG. 6 shows a conventional igniter 3 which has plug pins 31 for the electrical connection. The igniter 3 is inserted with its plug pins 31 into the sockets 1231 of the circuit arrangement 1. Preferably, such a circuit arrangement 1 intended for triggering purposes has bushes 1231 formed integrally with the lead frame 12 for receiving conventional igniters 3 and connecting means such as crimp connectors 1221 designed integrally with the lead frame 12 for receiving the conductors 2 coming from the control device mechanical interfaces between conductor 2 and igniter 3 are required, which means an enormous gain in terms of reliability, particularly in safety-critical applications such as an occupant protection system.
Je nach Ausbildung der Anschlußmittel 122 bzw weiteren Anschlußmittel 123 weist das Metallband bzw das aus demDepending on the design of the connection means 122 or further connection means 123, the metal strip or that from the
Metallband gestanzte Stanzgitter 12 an unterschiedlichenMetal tape punched grids 12 on different
Stellen unterschiedliche Materialien auf. So ist vorzugsweise zumindest der Innenumfang einer Buchse goldbeschichtet, um gute und korrosionsfreie KontaktÜbergänge zu schaffen. Der die Bauelemente tragende Bereich des Stanzgitters 12 ist z.b. mit Aluminium beschichtet, um gute Eigenschaften fürSet up different materials. For example, at least the inner circumference of a socket is preferably gold-plated in order to create good and corrosion-free contact transitions. The area of the lead frame 12 carrying the components is e.g. coated with aluminum to have good properties for
Bondverbindungen zwischen Bauelementen 11 und Stanzgitter 12 herzustellen. Anschlußmittel 122 wie Crimp-Anschlußteile 1221 sind vorzugsweise aus einem harten Material wie Stahl ausgebildet, sodaß der Leiter 2 auch bei starkerTo produce bond connections between components 11 and lead frame 12. Connection means 122 such as crimp connection parts 1221 are preferably made of a hard material such as steel, so that the conductor 2 is also strong
Zugbeanspruchung nicht freigegben wird. Dazu kann das Stanzgitter 12 in unterschiedlichen Bereichen mit unterschiedlichen Materialien beschichtet sein.Tensile stress is not released. This can be done Lead frame 12 may be coated with different materials in different areas.
In Figur 5 ist die von einem Kunststoffkörper 5 umgebene Schaltungsanordnung 1 gemäß Figur 4 gezeigt. Wird gemäß Figur 5 auch ein Teil des zugeführten Kabels von dem Kunststoffkörper itumfaßt/mitumspritzt , so wird das die mechanische Verbindung zum Kabel weiter stabilisiert. Das Gerät nach Figur 5 weist die Gestalt eines Steckers auf, in dessen Buchsen 1231 ein Anzünder eingeführt wird, und der eine Schaltungsanordnung enthält, die äußerst kontaktsicher ausgebildet ist.FIG. 5 shows the circuit arrangement 1 according to FIG. 4 surrounded by a plastic body 5. If, according to FIG. 5, part of the supplied cable is also encapsulated / encapsulated by the plastic body, the mechanical connection to the cable is further stabilized. The device according to FIG. 5 has the form of a plug, into whose sockets 1231 an igniter is inserted, and which contains a circuit arrangement which is designed to be extremely reliable.
In Figur 6 ist über den Crimp-Anschlußteilen 1221 ein Ferrit 6 angeordnet, der die Schaltungsanordnung 1 vor elektroststischen Aufladungen schützen soll. Bei einer Einbindung eines solchen Geräts in ein bereits bestehendes elektrisches System mit Steuereinheiten, Sensoren oder Aktoren, die über Leitungen mit dem Gerät elektrisch verbunden werden, weisen die mechanischen Schnittstellen der vorgegebenen Kabelanschlüsse oft keine Steckerbuchsen auf, die mit den Steckerstiften des bekannten Geräts verbunden werden könnten.In FIG. 6, a ferrite 6 is arranged above the crimp connection parts 1221 and is intended to protect the circuit arrangement 1 against electrostatic charges. When such a device is integrated into an existing electrical system with control units, sensors or actuators which are electrically connected to the device via lines, the mechanical interfaces of the predetermined cable connections often have no plug sockets which are connected to the plug pins of the known device could.
Das weitere Anschlußmittel kann anstelle zur direkten Aufnahme eines Leiters des Kabelbaums auch einstückig mit dem Stanzgitter als Buchse oder Steckerstift zur Aufnahme eines Steckerstiftes bzw einer Buchse ausgebildet sein, mit dem/der wiederum der Leiter der Datenleitung elektrisch verbunden ist.The further connection means can also be formed in one piece with the lead frame as a socket or plug pin for receiving a plug pin or a socket, to which the conductor of the data line is electrically connected, instead of directly receiving a conductor of the cable harness.
Das weitere Steuergerät ist vorzugsweise das zentral im Fahrzeug angeordnete Steuergerät . The further control device is preferably the control device arranged centrally in the vehicle.

Claims

Patentansprüche claims
1. Gerät mit einer elektrischen Schaltungsanordnung (1) zum Steuern eines Rückhaltemittels eines Fahrzeugs, mit einem aus einem Metallband gestanzten Stanzgitter (12) , das elektrische1. Device with an electrical circuit arrangement (1) for controlling a restraint means of a vehicle, with a punched grid (12) punched from a metal strip, the electrical
Bauelemente (11) der Schaltungsanordnurig (1) elektrisch leitend miteinander verbindet, dadurch gekennzeichnet,Components (11) of the circuit arrangement (1) are electrically conductively connected to one another, characterized in that
- daß ein einstückig mit dem Stanzgitter (12) ausgebildetes Anschlußmittel (122) für die elektrische Anbindung eines weiteren Steuergeräts (4) vorgesehen ist, und daß ein weiteres einstückig mit dem Stanzgitter (12) ausgebildetes Anschlußmittel (123) zur Aufnahme und elektrischen Anbindung eines Anzünders (3) des Rückhaltemittels vorgesehen ist.- That one piece with the lead frame (12) formed connection means (122) for the electrical connection of a further control device (4) is provided, and that another piece with the lead frame (12) formed connection means (123) for receiving and electrical connection of a Ignitor (3) of the retaining means is provided.
2. Gerät nach Anspruch 1, dadurch gekennzeichnet , daß das Anschlußmittel (122) als Crimp-Anschlußteil (1221) ausgebildet ist.2. Apparatus according to claim 1, characterized in that the connection means (122) is designed as a crimp connection part (1221).
3. Gerät nach Anspruch 1, dadurch gekennzeichnet , daß das Anschlußmittel (122) als Schneid-Klemm-Anschlußteil (1222) ausgebildet ist.3. Apparatus according to claim 1, characterized in that the connecting means (122) is designed as an insulation displacement connecting part (1222).
4. Gerät nach Anspruch 1, dadurch geke nzeichnet , daß das Anschlußmittel (122) als Buchse ausgebildet ist.4. Apparatus according to claim 1, characterized in that the connection means (122) is designed as a socket.
5. Gerät nach Anspruch 5, dadurch gekennzeichnet , daß das weitere Anschlußmittel (123) als Buchse (1231) zur Aufnahme eines Steckerstiftes des Anzünders (3) ausgebildet ist. 5. Apparatus according to claim 5, characterized in that the further connection means (123) is designed as a socket (1231) for receiving a plug pin of the igniter (3).
PCT/DE1997/001724 1996-08-27 1997-08-13 Device with an electrical circuit for controlling the restraining elements of a vehicle WO1998009486A1 (en)

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DE19634625.8 1996-08-27
DE19634625 1996-08-27

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WO2002084806A1 (en) 2001-04-10 2002-10-24 Robert Bosch Gmbh Electric connector
EP1154240A3 (en) * 2000-05-13 2003-08-20 AB Elektronik GmbH Angular position sensor
WO2016124776A1 (en) * 2015-02-05 2016-08-11 Valeo Vision Device for connecting a light source to an electrical power supply device
DE102018207371A1 (en) * 2018-05-11 2019-11-14 Md Elektronik Gmbh Electrical connector for a multi-core electrical cable
WO2022002615A1 (en) * 2020-06-29 2022-01-06 Ims Connector Systems Gmbh Electrical plug connector

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GB2276778A (en) * 1993-03-30 1994-10-05 Amphenol Tuchel Elect Electrical connector
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154240A3 (en) * 2000-05-13 2003-08-20 AB Elektronik GmbH Angular position sensor
WO2002084806A1 (en) 2001-04-10 2002-10-24 Robert Bosch Gmbh Electric connector
WO2016124776A1 (en) * 2015-02-05 2016-08-11 Valeo Vision Device for connecting a light source to an electrical power supply device
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US10337713B2 (en) 2015-02-05 2019-07-02 Valeo Vision Device for connecting a light source to an electrical power supply device
CN112874430A (en) * 2015-02-05 2021-06-01 法雷奥照明公司 Device for connecting a light source to a power supply device
DE102018207371A1 (en) * 2018-05-11 2019-11-14 Md Elektronik Gmbh Electrical connector for a multi-core electrical cable
WO2019214775A1 (en) * 2018-05-11 2019-11-14 Md Elektronik Gmbh Electrical plug-in connector for a multicore electrical cable
CN112074998A (en) * 2018-05-11 2020-12-11 迈恩德电子有限公司 Electrical plug connector for multi-core cables
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WO2022002615A1 (en) * 2020-06-29 2022-01-06 Ims Connector Systems Gmbh Electrical plug connector

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