EP0959528B1 - Apparatus for forming crimp connections - Google Patents

Apparatus for forming crimp connections Download PDF

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Publication number
EP0959528B1
EP0959528B1 EP99100425A EP99100425A EP0959528B1 EP 0959528 B1 EP0959528 B1 EP 0959528B1 EP 99100425 A EP99100425 A EP 99100425A EP 99100425 A EP99100425 A EP 99100425A EP 0959528 B1 EP0959528 B1 EP 0959528B1
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EP
European Patent Office
Prior art keywords
contact pins
leadframe
connection
tracks
contact
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.)
Expired - Lifetime
Application number
EP99100425A
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German (de)
French (fr)
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EP0959528A2 (en
EP0959528A3 (en
Inventor
Bernd Taubitz
Willi Kuehn
Reinhold Dr. Danner
Hartmut Zoebl
Andreas Abbing
Thomas Sutter
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP0959528A2 publication Critical patent/EP0959528A2/en
Publication of EP0959528A3 publication Critical patent/EP0959528A3/en
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Publication of EP0959528B1 publication Critical patent/EP0959528B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/187—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding

Definitions

  • the invention relates to a device with a tightly integrated in a housing packed electronics, the housing assigned contact pins and a variety of current conductors for electrical connection, each with a contact pin, the Contact pins due to the high packing density of the electronics at a short distance are arranged side by side and a non-releasable connection between the contact pin and the associated conductor is provided.
  • DE 86 20 976 U which is considered the closest prior art, discloses a device with one in one Housing integrated, tightly packed electronics.
  • the housing are Contact pins and a variety of conductors for electrical connection each assigned a contact pin.
  • the contact pins are because of the high packing density of the electronics with a small distance next to each other arranged. It is a permanent connection between the contact pin and provided the associated conductor, each conductor, the is each formed by a lead frame with lead frames, one a connection point around a contact pin bent crimp contact has and is crimped at the connection point with this contact pin.
  • the disadvantage of such a device is that the Loss of function due to tensile forces may occur.
  • the object of the invention is to provide a device whose Connection points functionally stable even when tensile forces act on them is. This object is achieved by the features of claim 1 solved. After that are tight punched lattice webs arranged next to one another in rows for Generation of strain relief provided.
  • the contact pins of the device can be in single, double or multiple rows, in particular be arranged at a distance of one to two millimeters from one another.
  • the crimping method according to the invention particularly preferably applicable.
  • Current conductors can be arranged at the ends Crimp contacts advantageous in one operation compared to the contact pin rows aligned, assembled with them and in a further step be crimped simultaneously.
  • the end crimp contacts of the current conductors have two at the connection point Tabs protruding from the side of the conductor.
  • the two tabs protruding to the side are preferably punched from a lead frame and can be V-shaped be, i.e. be bent upwards on the side of the contact pin if the contact pin is assembled with the crimp contacts.
  • the two above Tabs serve on the one hand to improve the crimp connection and on the other hand as a joining aid when assembling the large number of contact pins with the assigned ones Current conductors.
  • the laterally protruding tabs are preferably designed as offset triangular tabs and their diagonally running edges lie in the crimped state at a short distance from each other.
  • the triangular tabs can be easily Punch out of a sheet metal material without major material loss.
  • the triangular shape the tab leads to a particularly advantageous crimp contact for the invention simultaneous connection technology.
  • the crimp contacts point across the connection direction, i.e. to the longitudinal direction of the Contact pins, running notches.
  • the notches in the tabs of the Crimp contacts increase the holding forces at the connection points under tensile loads.
  • the current conductors are formed by a lead frame.
  • the tabs on the crimp contacts can also be removed the same lead frame material can advantageously be punched out. Leave this way punch out many conductors with crimp contacts from a sheet by punching them out, in particular lateral tabs of the crimp contacts laterally bendable are. Because of the triangular brackets Crimp contacts can also relieve strain on the lead frames without loss of material arise when the lead frames are bent in sections and run diagonally according to the diagonal tab edge next to it.
  • strain relief can be provided, particularly when close together in rows arranged lead frames by lowering the conductor tracks compared to Stamped grid level take place.
  • the conductor tracks can also be in one Direction parallel to the lead frame plane so that it meanders Running stamped grid conductor tracks are created.
  • About the strain relief in the Punched wire tracks can be found on the insert or in the bushings Form compensation elements. This allows the electronic connections to be powerful be decoupled.
  • the leadframe conductor tracks are prefabricated, in particular with curved crimp contacts and positions and spacings that match the contact pins. As a result, several crimp connections can be produced in a single simultaneous operation after the stamped grid tracks have been aligned.
  • multipole electronics or a connector can be connected to a lead frame by crimping all connections at the same time.
  • the crimp connection technology can preferably be automated and further components can be integrated in a cost-effective manner, for example the connection of a plug to the same lead frame.
  • Figure 1 shows a housing 1 with a plurality of arranged on the underside 2 Contact pins 3.
  • there are twenty contact pins 3 each in separate ones Areas 4 and 5 arranged.
  • the contact pins 3 are in each area 4, 5 arranged in two staggered rows.
  • a contact pin 6 of an adjacent one Row is centered in the longitudinal direction between two side by side Contact pins 7 and 8 arranged. This way the distance between the neighboring contact pins 6, 7, 8 maximized.
  • the housing 1 contains a complex control electronics for controlling a Motor vehicle transmission. Since the housing 1 in the example is preferably directly in the transmission installed, it is designed as a metal housing.
  • the contact pins 3, 6, 7, 8 are embedded in individual round glass bushings 9 and are therefore hermetic tightly connected to the housing 1.
  • the end face outside the housing the contact pins 3, 6, 7, 8 is preferably flat, i. H. the wire of the Contact pins 3, 6, 7, 8 is just cut off.
  • the contact pins 3, 6, 7, 8 are for the process step of melting glass or bonding on the inside of the housing 1 preferably gold-plated on its surface. For the sake of simplicity the entire surface of the contact pins 3, 6, 7, 8 is gold-plated.
  • the device is the double-row and staggered contact pins 3rd angled such that the conductor tracks 10 in a parallel to the bottom 2 of the Housing arranged level.
  • the conductor tracks 10 are in the form of a flat and sectionally angled lead frame 11 is formed.
  • the conductor tracks 10, i.e. the lead frames are approximately 1.6 in the area of the contact pins 3 mm wide and their sheet thickness is about 0.4 mm.
  • On their neighbors to the Contact pins 3 arranged sides each have the conductor tracks 10 crimp contacts 12 on, with two lateral tabs 13 and bent around the contact pins 3 14 are provided.
  • the side tabs 13 and 14 can be used in the manufacture of Conductor tracks 10 are stamped out of the metal sheet and during the connection process can be bent around the contact pins 3. After the conductor tracks 10 are connected to the respective contact pins 3, all crimp connections generated at the junctions 14 simultaneously.
  • Notches 16 and 17 are in the tabs 13 and 14 for absorbing tensile forces intended.
  • About kinks 18 and 19 are 10 in the conductor tracks
  • Lead frame 11 compensating elements 20 designed for relief. Get lost Sections of the conductor tracks 10 offset perpendicular to the plane of the lead frame 11.
  • strain relief can also result from that a conductor track 21 has a plurality of kinks 18 in which the conductor track 21 is deformed parallel to the plane of the lead frame 11.
  • the compensating elements 22 are small Loss of material can be punched out.
  • the tabs 13, 14 before assembly bent up sideways. After joining contact pins 3 and Crimp contacts 12, 25, 26 is the crimp connection of several or all of them side by side arranged conductor tracks 10, 21 and the associated contact pins 3, 6, 7, 8 generated simultaneously.
  • connection points 15 By partial tin plating of the conductor tracks 10 of the lead frame and subsequent simultaneous application of a heat source at the connection points 15 an additional soldered connection can be generated at the connection points 15. That clad Tin melts with the tinned connections of the electronics. This results in improved media resistance and current carrying capacity.

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Die Erfindung betrifft eine Vorrichtung mit einer in einem Gehäuse integrierten, dicht gepackten Elektronik, dem Gehäuse zugeordneten Kontaktpins und einer Vielzahl von Stromleitern zur elektrischen Verbindung mit jeweils einem Kontaktpin, wobei die Kontaktpins wegen der hohen Packungsdichte der Elektronik mit geringem Abstand nebeneinander angeordnet sind und eine nicht lösbare Verbindung zwischen Kontaktpin und dem zugeordneten Stromleiter vorgesehen ist.The invention relates to a device with a tightly integrated in a housing packed electronics, the housing assigned contact pins and a variety of current conductors for electrical connection, each with a contact pin, the Contact pins due to the high packing density of the electronics at a short distance are arranged side by side and a non-releasable connection between the contact pin and the associated conductor is provided.

Es ist bekannt, hochintegrierte Steuerelektronik, beispielsweise in Form von MikroProzessoren, in einen auf einer Leiterplatte angelöteten Sockel einzustecken. Wegen der dichtgepackten Elektronik sind an dem Gehäuse meist eine hohe Anzahl von Kontaktpins in Form von kleinen, am Gehäuse hervorstehenden Stiften angeordnet. Diese Stifte sind meist in ein bis drei Reihen, vorzugsweise versetzt, an der Unterseite des Gehäuses angeordnet. Jedoch ergeben sich bei der lösbaren Verbindungstechnik durch Einstecken des Gehäuses in den Sockel Kontaktierungsprobleme, insbesondere im Zusammenhang mit dem Einsatz der Elektronik in einer fluidumspülten Umgebung. It is known to use highly integrated control electronics, for example in the form of microprocessors, into a socket soldered onto a circuit board. Because of The densely packed electronics are usually a large number of on the housing Contact pins arranged in the form of small pins protruding from the housing. These pens are usually in one to three rows, preferably offset, on the underside arranged of the housing. However, with the releasable connection technology by plugging the housing into the base contact problems, especially in connection with the use of electronics in a fluid-flushed Surroundings.

Außerdem ist bekannt, Gehäuse mit hochintegrierter Elektronik durch Bonden, Hot Stacking oder serielles Schweißen unlösbar mit einer Vielzahl von Stromleitern zu verbinden. Dabei ergeben sich sowohl Probleme mit der auftretenden Verbindungswärme, als auch Nachteile im Zusammenhang mit einer Automatisierung dadurch, daß jeder Kontaktpin sequentiell mit jeweils einem Stromleiter verbunden wird. Insbesondere bei Gehäusen mit einer Vielzahl von Kontaktpins entstehen dadurch hohe Kosten wegen des dabei erforderlichen Zeitaufwands, da jede Verbindung einzeln hergestellt werden muß. Außerdem bieten sich wegen der hohen Packungsdichte und der Vielzahl von mit geringem Abstand nebeneinander angeordneten Kontaktpins andere, konventionelle Verbindungstechniken beim Studium des bekannten Stands der Technik nicht an.It is also known to bond housings with highly integrated electronics by bonding, Hot stacking or serial welding unsolvable with a variety of To connect conductors. There are both problems with the occurring connection heat, as well as disadvantages in connection with a Automation in that each contact pin sequentially with one Current conductor is connected. Especially for housings with a large number Contact pins result in high costs because of this time required since each connection is made individually got to. In addition, because of the high packing density and the variety of contact pins arranged close to each other, conventional connection techniques when studying the known state of the art Technology not on.

Durch die DE 86 20 976 U, die als nächstliegender Stand der Technik angesehen wird, ist eine Vorrichtung bekannt mit einer in einem Gehäuse integrierten, dicht gepackten Elektronik. Dem Gehäuse sind Kontaktpins und eine Vielzahl von Stromleitern zur elektrischen Verbindung mit jeweils einem Kontaktpin zugeordnet. Die Kontaktpins sind wegen der hohen Packungsdichte der Elektronik mit geringem Abstand nebeneinander angeordnet. Es ist eine nicht lösbare Verbindung zwischen Kontaktpin und dem zugeordneten Stromleiter vorgesehen, wobei jeder Stromleiter, der jeweils durch ein Stanzgitter mit Stanzgitterbahnen gebildet ist, einen an einer Verbindungsstelle um jeweils einen Kontaktpin gebogenen Crimpkontakt aufweist und an der Verbindungsstelle mit diesem Kontaktpin vercrimpt ist. Nachteilig ist bei einer solchen Vorrichtung, dass an den Verbindungsstellen durch Zugkräfte ein Funktionsverlust auftreten kann. Aufgabe der Erfindung ist es, eine Vorrichtung zu schaffen, deren Verbindungsstellen auch bei auf sie einwirkende Zugkräfte funktionsstabil ist. Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Danach sind bei dicht nebeneinander in Reihen angeordneten Stanzgitterbahnen Knickstellen zur Erzeugung einer Zugentlastung vorgesehen. DE 86 20 976 U, which is considered the closest prior art, discloses a device with one in one Housing integrated, tightly packed electronics. The housing are Contact pins and a variety of conductors for electrical connection each assigned a contact pin. The contact pins are because of the high packing density of the electronics with a small distance next to each other arranged. It is a permanent connection between the contact pin and provided the associated conductor, each conductor, the is each formed by a lead frame with lead frames, one a connection point around a contact pin bent crimp contact has and is crimped at the connection point with this contact pin. The disadvantage of such a device is that the Loss of function due to tensile forces may occur. The object of the invention is to provide a device whose Connection points functionally stable even when tensile forces act on them is. This object is achieved by the features of claim 1 solved. After that are tight punched lattice webs arranged next to one another in rows for Generation of strain relief provided.

Erfindungsgemäß wurde erkannt, daß bei elektronischen Steuergeräten, die in einem Gehäuse angeordnet sind, das im Bezug auf die Elektronik-Packungsdichte und Anzahl der Kontaktpins mit Mikroprozessorgehäusen vergleichbar ist, eine vorteilhafte nicht lösbare Verbindung zwischen den Kontaktpins und zugeordneten Stromleitern durch eine spezielle Crimptechnik möglich ist. Dabei kommt es insbesondere nicht zu Problemen in Bezug auf die Temperaturbeständigkeit der Verbindung und die Verbindung weist eine besonders hohe Schmelzfestigkeit auf. Durch die um den jeweiligen Kontaktpin gebogenen Crimpkontakte weist die Verbindung eine besonders hohe Stromtragfähigkeit auf. Durch die fortschreitende Miniaturisierung bei Maschinen, die die erfindungsgemäße Verbindungstechnik erzeugen, besteht nun der besondere Vorteil darin, mehrpolige elektrische Verbindungen gleichzeitig durch die spezielle, erfindungsgemäße Crimptechnik zu erzeugen. Dabei entsteht, beispielsweise gegenüber seriellem Schweißen, ein besonders kostengünstiger Prozeß.According to the invention it was recognized that in electronic control units, which are in one Housing are arranged that in terms of electronics packaging density and number the contact pins are comparable to microprocessor housings, an advantageous one non-detachable connection between the contact pins and assigned current conductors is possible using a special crimping technique. In particular, this is not the case Problems related to the temperature resistance of the connection and the connection has a particularly high melt strength. By around each Contact pin bent crimp contacts, the connection has a particularly high Current carrying capacity. Due to the increasing miniaturization of machines, that produce the connection technology according to the invention is now special The advantage is that multi-pole electrical connections can be made simultaneously thanks to the special To produce crimping technology according to the invention. This creates, for example, opposite serial welding, a particularly inexpensive process.

Die Kontaktpins der Vorrichtung können in Einzel-, Doppel- oder Mehrfachreihen, insbesondere im Abstand von ein bis zwei Millimeter zueinander angeordnet sein. Gerade bei dieser hohen Dichte von Kontaktpins, beispielsweise an der Unterseite eines Gehäuses einer Steuerelektronik, ist das erfindungsgemäße Crimpverfahren besonders bevorzugt anwendbar. Dabei können Stromleiter mit den endseitig angeordneten Crimpkontakten vorteilhaft in einem Arbeitsgang gegenüber den Kontaktpinreihen ausgerichtet, mit diesen zusammengefügt und in einem weiteren Arbeitsgang simultan vercrimpt werden.The contact pins of the device can be in single, double or multiple rows, in particular be arranged at a distance of one to two millimeters from one another. Especially with this high density of contact pins, for example on the underside of a housing for control electronics is the crimping method according to the invention particularly preferably applicable. Current conductors can be arranged at the ends Crimp contacts advantageous in one operation compared to the contact pin rows aligned, assembled with them and in a further step be crimped simultaneously.

Die endseitigen Crimpkontakte der Stromleiter haben an der Verbindungsstelle zwei seitlich vom Stromleiter abstehende Laschen. Die beiden seitlich abstehenden Laschen werden bevorzugt aus einem Stanzgitter gestanzt und können V-förmig ausgebildet sein, d.h. seitlich am Kontaktpin nach oben gebogen sein, wenn der Kontaktpin mit den Crimpkontakten zusammengefügt ist. Die beiden seitlich vorstehenden Laschen dienen einerseits zur Verbesserung der Crimpverbindung und andererseits als Fügehilfe beim Zusammensetzen der Vielzahl von Kontaktpins mit den zugeordneten Stromleitern.The end crimp contacts of the current conductors have two at the connection point Tabs protruding from the side of the conductor. The two tabs protruding to the side are preferably punched from a lead frame and can be V-shaped be, i.e. be bent upwards on the side of the contact pin if the contact pin is assembled with the crimp contacts. The two above Tabs serve on the one hand to improve the crimp connection and on the other hand as a joining aid when assembling the large number of contact pins with the assigned ones Current conductors.

Bevorzugt sind die seitlich abstehenden Laschen als versetzte Dreieckslaschen ausgebildet und deren diagonal verlaufende Kanten liegen sich im vercrimpten Zustand mit geringem Abstand gegenüber. Die Dreieckslaschen lassen sich in einfacher Weise ohne großen Materialverlust aus einem Blechmaterial ausstanzen. Die Dreiecksform der Laschen führt zu einem besonders vorteilhaften Crimpkontakt für die erfindungsgemäße simultane Verbindungstechnik.The laterally protruding tabs are preferably designed as offset triangular tabs and their diagonally running edges lie in the crimped state at a short distance from each other. The triangular tabs can be easily Punch out of a sheet metal material without major material loss. The triangular shape the tab leads to a particularly advantageous crimp contact for the invention simultaneous connection technology.

Die Crimpkontakte weisen quer zur Verbindungsrichtung, d.h. zur Längsrichtung der Kontaktpins, verlaufende Einkerbungen auf. Die Einkerbungen in den Laschen der Crimpkontakte erhöhen die Haltekräfte an den Verbindungsstellen bei Zugbelastung.The crimp contacts point across the connection direction, i.e. to the longitudinal direction of the Contact pins, running notches. The notches in the tabs of the Crimp contacts increase the holding forces at the connection points under tensile loads.

Bei einer besonders bevorzugten Weiterbildung der Erfindung sind die Stromleiter durch ein Stanzgitter gebildet. Auch die Laschen der Crimpkontakte können aus demselben Stanzgitter-Material vorteilhaft ausgestanzt sein. Auf diese Weise lassen sich aus einem Blech durch Ausstanzen viele Stromleiter mit Crimpkontakten ausstanzen, wobei insbesondere seitliche Laschen der Crimpkontakte seitlich hochbiegbar sind. Durch die insbesondere als versetzte Dreieckslaschen ausgebildeten Crimpkontakte können ohne Materialverlust auch Zugentlastungen der Stanzgitterbahnen entstehen, wenn die Stanzgitterbahnen abschnittsweise geknickt sind und entsprechend der daneben angeordneten diagonalen Laschenkante diagonal verlaufen.In a particularly preferred development of the invention, the current conductors are formed by a lead frame. The tabs on the crimp contacts can also be removed the same lead frame material can advantageously be punched out. Leave this way punch out many conductors with crimp contacts from a sheet by punching them out, in particular lateral tabs of the crimp contacts laterally bendable are. Because of the triangular brackets Crimp contacts can also relieve strain on the lead frames without loss of material arise when the lead frames are bent in sections and run diagonally according to the diagonal tab edge next to it.

Ferner kann eine Zugentlastung insbesondere bei dicht nebeneinander in Reihen angeordneten Stanzgitterbahnen durch Absenken der Leiterbahnen gegenüber der Stanzgitterebene erfolgen. Andererseits können die Leiterbahnen auch in einer Richtung parallel zur Stanzgitterebene verformt sein, so daß dabei mäanderartig verlaufende Stanzgitter-Leiterbahnen entstehen. Über die Zugentlastungen in den Stanzgitter-Leiterbahnen lassen sich am Einlegeteil oder in den Durchführungen Ausgleichselemente formen. Damit können die Elektronikanschlüsse kräftemäßig entkoppelt werden.In addition, strain relief can be provided, particularly when close together in rows arranged lead frames by lowering the conductor tracks compared to Stamped grid level take place. On the other hand, the conductor tracks can also be in one Direction parallel to the lead frame plane so that it meanders Running stamped grid conductor tracks are created. About the strain relief in the Punched wire tracks can be found on the insert or in the bushings Form compensation elements. This allows the electronic connections to be powerful be decoupled.

Insbesondere bei mehrreihigen Kontaktpins kann durch abwechselnde Absenkung der Stanzgitter-Leiterbahnen zwischen zwei benachbarten Crimpkontakten eine höhere Verbindungsdichte erzielbar sein. Andererseits ist eine Vergrößerung des Isolierabstandes zwischen den Crimpverbindungen möglich. Ferner kann die Dichte der nebeneinanderstehenden Kontaktpins soweit vergrößert werden, daß sogar ein Übergang von mehrlagigen zu einlagigen Stanzgittern möglich ist.
Bei einer besonders vorteilhaften Weiterbildung der Erfindung sind die Stanzgitter-Leiterbahnen, insbesondere mit gebogenen Crimpkontakten und zu den Kontaktpins passenden Positionen und Abständen vorgefertigt. Dadurch sind nach dem Ausrichten der Stanzgitterbahnen mehrere Crimpverbindungen mit einem einzigen simultanen Arbeitsgang erzeugbar. Auf diese Weise lassen sich eine vielpolige Elektronik oder ein Stecker durch gleichzeitiges Crimpen aller Anschlüsse vorzugsweise an einem Stanzgitter anschließen. Die Crimpverbindungstechnik ist bevorzugt automatisierbar und es lassen sich auf einfache Art weitere Komponenten kostengünstig integrieren, beispielsweise der Anschluß eines Steckers an demselben Stanzgitter. In particular in the case of multi-row contact pins, a higher connection density can be achieved by alternately lowering the lead frame interconnects between two adjacent crimp contacts. On the other hand, an increase in the insulation distance between the crimp connections is possible. Furthermore, the density of the adjacent contact pins can be increased to such an extent that even a transition from multi-layer to single-layer lead frames is possible.
In a particularly advantageous development of the invention, the leadframe conductor tracks are prefabricated, in particular with curved crimp contacts and positions and spacings that match the contact pins. As a result, several crimp connections can be produced in a single simultaneous operation after the stamped grid tracks have been aligned. In this way, multipole electronics or a connector can be connected to a lead frame by crimping all connections at the same time. The crimp connection technology can preferably be automated and further components can be integrated in a cost-effective manner, for example the connection of a plug to the same lead frame.

Weitere vorteilhafte Ausführungsformen der erfindungsgemäßen Vorrichtung ergeben sich aus den Unteransprüchen und der Beschreibung. Zwei Ausführungsformen der Erfindung sind in der Zeichnung dargestellt und werden nachfolgend beschrieben. Es zeigen, jeweils in schematischer Darstellung,

Figur 1
ein mit einer Vielzahl von Stromleitern zu verbindendes Gehäuse mit integrierter Elektronik als Bestandteil der erfindungsgemäßen Vorrichtung,
Figur 2
eine Seitenansicht des Gehäuses nach Figur 1,
Figur 3
eine Ansicht der Verbindungsstellen zwischen Kontaktpins und der Vielzahl von Stromleitern gemäß einer ersten Ausführungsform der vorliegenden Erfindung,
Figur 4
eine Seitenansicht der erfindungsgemäßen Vorrichtung in Figur 3,
Figur 5
eine Ansicht der seitlich hochgebogenen Laschen der Crimpkontakte der Stromleiter gemäß einer zweiten Ausführungsform und
Figur 6
eine Draufsicht auf eine Leiterbahn gemäß der zweiten Ausführungsform der vorliegenden Erfindung.
Further advantageous embodiments of the device according to the invention result from the subclaims and the description. Two embodiments of the invention are shown in the drawing and are described below. They show, each in a schematic representation,
Figure 1
a housing to be connected to a multiplicity of current conductors with integrated electronics as part of the device according to the invention,
Figure 2
2 shows a side view of the housing according to FIG. 1,
Figure 3
2 shows a view of the connection points between contact pins and the plurality of current conductors according to a first embodiment of the present invention,
Figure 4
3 shows a side view of the device according to the invention in FIG. 3,
Figure 5
a view of the laterally bent tabs of the crimp contacts of the conductor according to a second embodiment and
Figure 6
a plan view of a conductor track according to the second embodiment of the present invention.

Figur 1 zeigt ein Gehäuse 1 mit einer Vielzahl von an der Unterseite 2 angeordneten Kontaktpins 3. Im Beispiel sind jeweils zwanzig Kontaktpins 3 in voneinander getrennten Bereichen 4 und 5 angeordnet. Die Kontaktpins 3 sind in jedem Bereich 4, 5 in zwei zueinander versetzten Reihen angeordnet. Ein Kontaktpin 6 einer benachbarten Reihe ist dabei in Längsrichtung mittig zwischen zwei nebeneinander angeordneten Kontaktpins 7 und 8 angeordnet. Auf diese Weise ist der Abstand zwischen den benachbarten Kontaktpins 6, 7, 8 maximiert.Figure 1 shows a housing 1 with a plurality of arranged on the underside 2 Contact pins 3. In the example, there are twenty contact pins 3 each in separate ones Areas 4 and 5 arranged. The contact pins 3 are in each area 4, 5 arranged in two staggered rows. A contact pin 6 of an adjacent one Row is centered in the longitudinal direction between two side by side Contact pins 7 and 8 arranged. This way the distance between the neighboring contact pins 6, 7, 8 maximized.

Das Gehäuse 1 beinhaltet eine komplexe Steuerelektronik zur Ansteuerung eines Kraftfahrzeuggetriebes. Da das Gehäuse 1 im Beispiel vorzugsweise direkt im Getriebe eingebaut wird, ist es als Metallgehäuse ausgeführt. Die Kontaktpins 3, 6, 7, 8 sind in einzelne runde Glasdurchführungen 9 eingebettet und dadurch hermetisch dicht mit dem Gehäuse 1 verbunden. Die außerhalb des Gehäuses liegende Stirnseite der Kontaktpins 3, 6, 7, 8 ist vorzugsweise flach ausgebildet, d. h. der Draht der Kontaktpins 3, 6, 7, 8 ist gerade abgeschnitten. Die Kontaktpins 3, 6, 7, 8 werden für den Verfahrensschritt der Glaseinschmelzung oder das Bonden auf der Innenseite des Gehäuses 1 vorzugsweise auf ihrer Oberfläche vergoldet. Der Einfachheit halber ist die gesamte Oberfläche der Kontaktpins 3, 6, 7, 8 vergoldet.The housing 1 contains a complex control electronics for controlling a Motor vehicle transmission. Since the housing 1 in the example is preferably directly in the transmission installed, it is designed as a metal housing. The contact pins 3, 6, 7, 8 are embedded in individual round glass bushings 9 and are therefore hermetic tightly connected to the housing 1. The end face outside the housing the contact pins 3, 6, 7, 8 is preferably flat, i. H. the wire of the Contact pins 3, 6, 7, 8 is just cut off. The contact pins 3, 6, 7, 8 are for the process step of melting glass or bonding on the inside of the housing 1 preferably gold-plated on its surface. For the sake of simplicity the entire surface of the contact pins 3, 6, 7, 8 is gold-plated.

Bei der in den Figuren 3 und 4 dargestellten ersten Ausführungsform der erfindungsgemäßen Vorrichtung sind die doppelreihig und versetzt angeordneten Kontaktpins 3 derart abgewinkelt, daß die Leiterbahnen 10 in einer parallel zur Unterseite 2 des Gehäuses angeordneten Ebene verlaufen. Die Leiterbahnen 10 sind in Form eines flächigen und abschnittsweise abgewinkelten Stanzgitters 11 ausgebildet. Die Leiterbahnen 10, d.h. die Stanzgitterbahnen, sind im Bereich der Kontaktpins 3 etwa 1,6 mm breit und deren Blechdicke beträgt etwa 0,4 mm. An ihren benachbart zu den Kontaktpins 3 angeordneten Seiten weisen die Leiterbahnen 10 jeweils Crimpkontakte 12 auf, die mit zwei seitlichen um die Kontaktpins 3 gebogenen Laschen 13 und 14 versehen sind. Die seitlichen Laschen 13 und 14 können beim Herstellen der Leiterbahnen 10 aus dem Metallblech mit ausgestanzt werden und beim Verbindungsvorgang um die Kontaktpins 3 gebogen werden. Nachdem die Leiterbahnen 10 mit den jeweiligen Kontaktpins 3 zusammengefügt sind, werden sämtliche Crimpverbindungen an den Verbindungsstellen 14 gleichzeitig erzeugt.In the first embodiment of the invention shown in FIGS. 3 and 4 The device is the double-row and staggered contact pins 3rd angled such that the conductor tracks 10 in a parallel to the bottom 2 of the Housing arranged level. The conductor tracks 10 are in the form of a flat and sectionally angled lead frame 11 is formed. The conductor tracks 10, i.e. the lead frames are approximately 1.6 in the area of the contact pins 3 mm wide and their sheet thickness is about 0.4 mm. On their neighbors to the Contact pins 3 arranged sides each have the conductor tracks 10 crimp contacts 12 on, with two lateral tabs 13 and bent around the contact pins 3 14 are provided. The side tabs 13 and 14 can be used in the manufacture of Conductor tracks 10 are stamped out of the metal sheet and during the connection process can be bent around the contact pins 3. After the conductor tracks 10 are connected to the respective contact pins 3, all crimp connections generated at the junctions 14 simultaneously.

Einkerbungen 16 und 17 sind in den Laschen 13 und 14 zur Aufnahme von Zugkräften vorgesehen. Über Knickstellen 18 und 19 sind in den Leiterbahnen 10 des Stanzgitters 11 Ausgleichselemente 20 zur Entlastung ausgebildet. Dabei verlaufen Abschnitte der Leiterbahnen 10 zur Ebene des Stanzgitters 11 senkrecht versetzt.Notches 16 and 17 are in the tabs 13 and 14 for absorbing tensile forces intended. About kinks 18 and 19 are 10 in the conductor tracks Lead frame 11 compensating elements 20 designed for relief. Get lost Sections of the conductor tracks 10 offset perpendicular to the plane of the lead frame 11.

Wie in den Figuren 5 und 6 dargestellt, kann eine Zugentlastung auch dadurch entstehen, daß eine Leiterbahn 21 mehrere Knickstellen 18 aufweist, in denen die Leiterbahn 21 parallel zur Ebene des Stanzgitters 11 verformt ist. Dabei können die Ausgleichselemente 22 für die Zugentlastung auch schon beim Ausstanzen der Leiterbahn 21 aus dem Stanzblech entstehen, wobei je ein Ausgleichselement 22 zwischen zwei benachbart angeordneten Laschen 23 und 24 benachbarter Crimpkontakte 25 und 26 angeordnet ist. Die Ausgleichselemente 22 sind dabei mit geringem Materialverlust ausstanzbar. Zur Erleichterung des Zusammenfügens eines Crimpkontakts 12 mit einem Kontaktpin 3 werden die Laschen 13, 14 vor dem Zusammenfügen seitlich hochgebogen. Nach dem Zusammenfügen von Kontaktpins 3 und Crimpkontakten 12, 25, 26 wird die Crimpverbindung mehrerer bzw. aller nebeneinander angeordneter Leiterbahnen 10, 21 und der dazu gehörenden Kontaktpins 3, 6, 7, 8 gleichzeitig erzeugt.As shown in FIGS. 5 and 6, strain relief can also result from that a conductor track 21 has a plurality of kinks 18 in which the conductor track 21 is deformed parallel to the plane of the lead frame 11. The Compensating elements 22 for strain relief even when punching out the conductor track 21 arise from the stamped sheet, each with a compensating element 22 between two adjacently arranged tabs 23 and 24 of adjacent crimp contacts 25 and 26 is arranged. The compensating elements 22 are small Loss of material can be punched out. To facilitate the assembly of a crimp contact 12 with a contact pin 3, the tabs 13, 14 before assembly bent up sideways. After joining contact pins 3 and Crimp contacts 12, 25, 26 is the crimp connection of several or all of them side by side arranged conductor tracks 10, 21 and the associated contact pins 3, 6, 7, 8 generated simultaneously.

Durch partielle Zinnplattierungen der Leiterbahnen 10 des Stanzgitters und nachträgliches simultanes Aufbringen einer Wärmequelle an den Verbindungsstellen 15 ist eine zusätzliche Lötverbindung an den Verbindungsstellen 15 erzeugbar. Das plattierte Zinn verschmilzt mit den verzinnten Anschlüssen der Elektronik. Dadurch ergibt sich eine verbesserte Medienbeständigkeit und Stromtragfähigkeit.By partial tin plating of the conductor tracks 10 of the lead frame and subsequent simultaneous application of a heat source at the connection points 15 an additional soldered connection can be generated at the connection points 15. That clad Tin melts with the tinned connections of the electronics. This results in improved media resistance and current carrying capacity.

Claims (8)

  1. Apparatus with closely packed electronics integrated in a housing (1), contact pins (3) assigned to the housing (1) and a multiplicity of current conductors (10, 11, 21) for electrical connection with a respective contact pin (3), the contact pins (3) being arranged next to one another with a small distance between them because of the high packing density of the electronics and an unreleasable connection being provided between the contact pin (3) and the assigned current conductor (10, 11, 21), each current conductor (10, 11, 21), which is respectively formed by a leadframe (11) with leadframe tracks, having a crimping contact (12), which is bent around a respective contact pin (3) at a connecting point (15), and being crimped with this contact pin (3) at the connecting point (15), characterized in that, with leadframe tracks arranged closely next to one another in rows, buckling points (18, 19) are provided for producing tension relief.
  2. Apparatus according to Claim 1, characterized in that the contact pins (3) are arranged in single, double or multiple rows, in particular at a distance of 1 mm to 10 mm from one another.
  3. Apparatus according to Claim 1, characterized in that the crimping contacts (12) have at the connecting point (15) two lugs (13, 14, 23, 24) protruding laterally from the current conductor (10, 11, 21).
  4. Apparatus according to Claim 3, characterized in that the lateral protruding lugs (13, 14, 23, 24) are formed as offset triangular lugs and their diagonally running edges lie opposite each other a small distance apart in the crimped state.
  5. Apparatus according to one of Claims 1 to 4, characterized in that the crimping contacts (12) have notches (16, 17), in particular running transversely to the direction of connection.
  6. Apparatus according to one of Claims 3 to 5, characterized in that the lugs (13, 14, 23, 24) are punched out from the punched plate for the leadframe (11).
  7. Apparatus according to one of Claims 1 to 6, characterized in that, in particular in the case of multi-row contact pins (3), a higher connection density can be achieved by alternate lowering of the leadframe track (10, 11, 21) between two neighbouring crimping contacts (12, 25, 26).
  8. Apparatus according to one of Claims 1 to 7, characterized in that the leadframe tracks (10, 11, 21) are prefabricated with preformed, in particular bent, crimping contacts (12, 25, 26) with positions and distances matching the contact pins (3) in such a way that, after aligning the leadframe tracks (10, 11, 21), the crimp connections of a number of connecting points (15) can be produced by a single simultaneous operation.
EP99100425A 1998-05-19 1999-01-11 Apparatus for forming crimp connections Expired - Lifetime EP0959528B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19822346A DE19822346A1 (en) 1998-05-19 1998-05-19 Device and method for producing a crimp connection
DE19822346 1998-05-19

Publications (3)

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EP0959528A2 EP0959528A2 (en) 1999-11-24
EP0959528A3 EP0959528A3 (en) 2000-12-13
EP0959528B1 true EP0959528B1 (en) 2003-11-12

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ID=7868227

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EP99100425A Expired - Lifetime EP0959528B1 (en) 1998-05-19 1999-01-11 Apparatus for forming crimp connections

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EP (1) EP0959528B1 (en)
DE (2) DE19822346A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216472A1 (en) 2013-08-20 2015-02-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electrical contact arrangement for an electric motor and method of manufacture

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727299A (en) * 1953-02-27 1955-12-20 Heyman Mfg Company Process for making electrical terminals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716741A (en) * 1951-06-29 1955-08-30 Continental Copper & Steel Ind Strain relief device
JPS6290880A (en) * 1985-10-16 1987-04-25 株式会社東芝 Flat crimping terminal and insertion tool of the same
DE8620976U1 (en) * 1986-08-05 1986-09-25 F. Wieland, Elektrische Industrie GmbH, 8600 Bamberg Device connection terminal
JP3419555B2 (en) * 1994-07-22 2003-06-23 矢崎総業株式会社 Pin type terminal and manufacturing method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727299A (en) * 1953-02-27 1955-12-20 Heyman Mfg Company Process for making electrical terminals

Also Published As

Publication number Publication date
EP0959528A2 (en) 1999-11-24
DE19822346A1 (en) 1999-11-25
DE59907683D1 (en) 2003-12-18
EP0959528A3 (en) 2000-12-13

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