EP2834827B1 - Device for surge-current-resistant terminal contacting of electrical components - Google Patents

Device for surge-current-resistant terminal contacting of electrical components Download PDF

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Publication number
EP2834827B1
EP2834827B1 EP13716253.3A EP13716253A EP2834827B1 EP 2834827 B1 EP2834827 B1 EP 2834827B1 EP 13716253 A EP13716253 A EP 13716253A EP 2834827 B1 EP2834827 B1 EP 2834827B1
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EP
European Patent Office
Prior art keywords
contact
spring
legs
electrical component
current
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.)
Not-in-force
Application number
EP13716253.3A
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German (de)
French (fr)
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EP2834827A1 (en
Inventor
Bernhard Krauss
Stephan Hierl
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.)
Dehn SE and Co KG
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Dehn and Soehne GmbH and Co KG
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Publication of EP2834827A1 publication Critical patent/EP2834827A1/en
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Publication of EP2834827B1 publication Critical patent/EP2834827B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/202—Bases for supporting the fuse; Separate parts thereof for fuses with ferrule type end contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/975—Holders with resilient means for protecting apparatus against vibrations or shocks
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member

Definitions

  • the invention relates to a device for shock-current resistant Klemmtem ist of electrical components, in particular components in rotationally symmetrical shape, wherein the components have on its lateral surface spaced contacting portions, further comprising two U-shaped, electrically conductive contact jaws, which have a partial surface, the contour of the respective contacting section of the electrical component is complementary, according to claim 1.
  • a jaw is previously known for a fuse carrier having two U-shaped clamping parts, which are intended to define between them a space for receiving the fuse capsule having a circular cross-section.
  • the clamping jaw with a substantially U-shaped configuration has bending sections with respect to the opposite U-legs, so that a mechanical support is formed. This mechanical support runs along lines that are oriented parallel to the axis of the fuse capsule. Through these contact lines, both the electrical connection and the mechanical support is realized.
  • an expression in the U-legs ensures a secure position.
  • the local jaws have a feather-like function and are subject to the insertion of the fuse capsule a spread. However, such a jaw training is not shock resistant. Furthermore, there is a risk that the inserted fuse element or the fuse capsule shifts in case of vibrations or mechanical vibrations and leaves the intended position.
  • contact tongues are further formed, which include the corresponding contact cap of the fuse resiliently.
  • the relevant form of the contact tongues is not realized according to the lateral surface contour of the sleeve, so that it comes only to a point or line contact. The adoption of such a constructive solution for shock current resistant devices is not possible.
  • the shows DE 929 205 a clamp for receiving a replacement fuse.
  • This clamp has two spaced clamps, which have a shape in cross section, which is adapted to the outer contour of the fuse to fix the latter captive.
  • By differently deep-trained slots in the clamp independent spring force training of the individual clamp parts is effected with respect to holding the fuse and fixing the spare fuse holder to the coil spring.
  • the US 2,802,920 A discloses a fuse holder with jaws and a partial surface which is provided between the legs of a U-shaped spring clip, wherein a local contact jaw and a spring clip are joined in the longitudinal extension of the fuse and clamped by means of wedging action.
  • the device comprises two U-shaped, electrically conductive contact jaws, which have a partial surface which is complementary to the contour of the respective contacting section of the electrical component.
  • the complementary contour in this context is understood to mean a region of the lateral surface of the electrical component, specifically where the contacting sections are located.
  • Each contact jaw is associated with a substantially U-shaped spring clip, which also has a partial surface which is complementary to the contour of the respective contacting portion of the electrical component.
  • This partial surface is inventively provided in the connecting portion between the legs of the U-shaped spring clip.
  • the U-legs of the spring clip between the lateral surface of the electrical component and the respective U-leg of the respective contact jaw dive and are fixed against each other latching.
  • latching openings are present in the legs of the spring clip, in which locking lugs of the jaws engage self-locking.
  • locking lugs of the jaws engage self-locking.
  • the spring clips have in the transition region between the side legs and the leg connecting portion depending on a shoulder-shaped expression, which builds a spring force in the assembled state, for which purpose the shoulder-shaped forms do not come to the lateral surface of the component to the plant.
  • the current-carrying capacity can be predetermined via the size of the partial surfaces of the contact jaws, without leaving the inventive principle.
  • the locking fixation between the jaws and the spring clips can be kept free of current flow in a preferred embodiment.
  • the spring clips are either non-conductive or have an electrical insulation coating or an insulation intermediate layer with respect to the contacting portions of the electrical component.
  • the contact jaws may have connection extensions and / or solder contacts.
  • the connection extensions can be formed as screw contacts, plug contacts or the like.
  • the clear inner spacing of the U-legs of the clamping jaws essentially corresponds to the diameter or the width of the electrical component in the region of its contacting sections. Again preferred is the aforementioned inside clearance around a small amount greater than the diameter or the width of the electrical component in the region of the contacting sections.
  • the difference in dimension with respect to the clear inner spacing of the U-legs of the jaws and the diameter or width of the electrical component is so large that the spring clip can be easily inserted into its desired position between the jaw and electrical component and fixed there latching.
  • the stiffness and material thickness of the jaws is greater than that of the spring clip.
  • the material selection and material properties of the spring clip are primarily directed to the ease of assembling and building the desired preload spring force.
  • the material selection of the jaws is chosen in terms of optimum current carrying capacity.
  • the aforementioned components can be optimized independently of each other in terms of their desired function.
  • the spring clip also perform electrically conductive to accommodate a partial flow.
  • the device according to the invention according to the illustration Fig. 1 initially starts from an electrical component 3.
  • This component (see Fig. 2 ) may be rotationally symmetrical, in particular cylindrically shaped and formed in the form of a fuse with opposite contact surfaces 7.
  • two electrically conductive contact jaws 1 are present, which have a partial surface 4 which is complementary to the contour of the respective contacting section 7 of the electrical component 3.
  • Each contact jaw 1 is associated with a U-shaped spring clip 2, which likewise has a partial surface 5 which is complementary to the contour of the respective contacting section 7 of the electrical component 3.
  • This partial surface 5 is provided in the connecting portion between the legs 6 and 6 'of the U-shaped spring clip 2.
  • the U-legs 6, 6 'of the spring clip 2 dive between the lateral surface of the electrical component 3 and the respective U-legs of the respective contact jaw 1 and are fixed against each other latching.
  • 2 window-like recesses 2 ' are present in the legs 6, 6' of the spring element, engage in the corresponding locking lugs 1 '.
  • the locking function can take place here in several stages to increase the contact force on the surfaces 4 and 5. This multi-stage locking possibility is accomplished by several in-line openings 2 'and locking lugs 1'.
  • the respective spring clip 2 has in the transition region between the lateral legs 6, 6 'and the leg connecting portion 5 a shoulder-shaped expression 10, which builds up the desired spring force in the assembled state.
  • the shoulder-shaped forms 10 do not come to the lateral surface or contact surface 7 of the component 3 to the plant.
  • the contacting device consists of a receptacle formed by the clamping jaw of an electrically conductive material and a counterpart in the form of the spring clip.
  • the electrical component 3 which has outer fins, contacted for the transmission of currents.
  • the contact or clamping jaw 1 is geometrically designed in the region of the contact surface 4 such that the electrical component 3 can be partially fixed in its position.
  • the corresponding contact jaw is formed so that a complementary shape to the electrical component in the region of the contact surface 4 results.
  • the top of the spring clip 2 made from above, the contact between the electrical component 3 and the respective contact jaw 1 is made.
  • the force F2 acts on the latching.
  • the spring clip 2 may also consist of a non-conductive material or at least have no electrical connection to the electrical component.
  • the spring clip 2 consists of a conductive material without insulation to the component 3, a current-carrying conductor is formed, which tries to stretch when current flows. This also results in an increase of the holding or pressing force F2.
  • the contact on the contact surface 7 after Fig. 2 can compensate for the length tolerances of the component 3 to be clamped or contacted (dimension L), which represents significant advantages in comparison with contacting on the end faces, in which length tolerances are problematic.
  • the contact on the lateral surface is independent of the length and the relative position of the contact / lateral surface 7.
  • the functional current transition surface can be increased virtually arbitrarily, so that a higher current carrying capacity is the result.
  • the device is also protected from damage in contrast to a contacting of the end face 8 with bulge 8 '.
  • the 3 and 4 show perspective views of the device according to the invention for shock-current resistant Klemmtem ist of electrical components, for example in the form of a fuse.
  • the self-adjusting higher contact pressure results in an improved current transition, a better fixation of the latch, a way of controlling the flow of current and the distribution of the current over several contact points with an overall increased current carrying capacity.

Description

Die Erfindung betrifft eine Vorrichtung zur stoßstromfesten Klemmkontaktierung von elektrischen Bauteilen, insbesondere Bauteilen in rotationssymmetrischer Form, wobei die Bauteile auf ihrer Mantelfläche beabstandete Kontaktierungsabschnitte aufweisen, weiterhin umfassend zwei U-förmige, elektrisch leitfähige Kontaktbacken, welche eine Teilfläche besitzen, die der Kontur des jeweiligen Kontaktierungsabschnitts des elektrischen Bauteils komplementär ist, gemäß Patentanspruch 1.The invention relates to a device for shock-current resistant Klemmkontaktierung of electrical components, in particular components in rotationally symmetrical shape, wherein the components have on its lateral surface spaced contacting portions, further comprising two U-shaped, electrically conductive contact jaws, which have a partial surface, the contour of the respective contacting section of the electrical component is complementary, according to claim 1.

Aus der EP 1 194 943 B1 ist eine Klemmbacke für einen Sicherungsträger vorbekannt, welcher zwei U-förmige Klemmteile aufweist, die dazu bestimmt sind, zwischen sich einen Raum für die Aufnahme der Sicherungskapsel, die einen kreisförmigen Querschnitt besitzt, zu definieren. Die Klemmbacke mit im Wesentlichen U-förmiger Gestalt weist bezüglich der gegenüberliegenden U-Schenkel Biegeabschnitte auf, so dass sich eine mechanische Abstützung ausbildet. Diese mechanische Abstützung verläuft entlang von Linien, die parallel zur Achse der Sicherungskapsel orientiert sind. Über diese Kontaktlinien wird sowohl die elektrische Verbindung als auch die mechanische Abstützung realisiert. Gleichzeitig sorgt eine Ausprägung in den U-Schenkeln für eine Lagesicherung. Die dortigen Klemmbacken weisen eine federartige Funktion auf und unterliegen beim Einsetzen der Sicherungskapsel einer Spreizung. Eine derartige Klemmbackenausbildung ist jedoch nicht stoßstromfest. Weiterhin besteht die Gefahr, dass sich das eingesetzte Sicherungselement oder die Sicherungskapsel bei Erschütterungen bzw. mechanischen Schwingungen verschiebt und die vorgesehene Position verlässt.From the EP 1 194 943 B1 a jaw is previously known for a fuse carrier having two U-shaped clamping parts, which are intended to define between them a space for receiving the fuse capsule having a circular cross-section. The clamping jaw with a substantially U-shaped configuration has bending sections with respect to the opposite U-legs, so that a mechanical support is formed. This mechanical support runs along lines that are oriented parallel to the axis of the fuse capsule. Through these contact lines, both the electrical connection and the mechanical support is realized. At the same time, an expression in the U-legs ensures a secure position. The local jaws have a feather-like function and are subject to the insertion of the fuse capsule a spread. However, such a jaw training is not shock resistant. Furthermore, there is a risk that the inserted fuse element or the fuse capsule shifts in case of vibrations or mechanical vibrations and leaves the intended position.

Bei dem Halter für Sicherungen nach DE 929 205 sind Kontakthalter für den Leiteranschluss und für die Kontaktgabel mit der die Sicherung aufnehmenden Gehäusehälften durch eine Schraubenfeder miteinander verbunden, die bei eingesetzter Sicherung als Zugfeder wirkt und den Kontaktdruck zwischen Sicherung und den Aufnahmekontakten erzeugt bzw. beibehält. Durch die Schraubenfederkonfiguration mit aufgenommener Sicherung im Innenraum der Schraubenfeder kann auch bei mechanischen Erschütterungen die Sicherung ihre erforderliche Position nicht verlassen.At the fuse holder after DE 929 205 Contact holder for the conductor connection and the contact fork with the fuse-receiving housing halves are interconnected by a coil spring, which acts as a tension spring with inserted fuse and generates or maintains the contact pressure between the fuse and the receptacle contacts. By the coil spring configuration with recorded fuse in the interior of the Coil spring can not leave the fuse its required position even with mechanical shocks.

In einem für die Aufnahme der Sicherung bestimmten Ende einer Hülse sind weiterhin Kontaktzungen ausgebildet, welche die entsprechende Kontaktkappe der Sicherung federnd umfassen. Die diesbezügliche Form der Kontaktzungen ist nicht der Mantelflächenkontur der Hülse entsprechend realisiert, so dass es nur zu einem punkt- oder linienförmigen Kontakt kommt. Die Übernahme einer derartigen konstruktiven Lösung für stoßstromfeste Vorrichtungen ist nicht möglich.In a specific for receiving the fuse end of a sleeve contact tongues are further formed, which include the corresponding contact cap of the fuse resiliently. The relevant form of the contact tongues is not realized according to the lateral surface contour of the sleeve, so that it comes only to a point or line contact. The adoption of such a constructive solution for shock current resistant devices is not possible.

Weiterhin zeigt die DE 929 205 eine Schelle zur Aufnahme einer Ersatzsicherung. Diese Schelle weist zwei beabstandete Klemmbügel auf, welche im Querschnitt eine Form besitzen, die der Außenkontur der Sicherung angepasst ist, um letztere verliersicher zu fixieren. Durch verschieden tief ausgebildete Schlitze in der Schelle wird eine unabhängige Federkraftausbildung der einzelnen Schellenteile bezüglich des Haltens der Sicherung und des Fixierens der Ersatzsicherungs-Halterung an der Schraubenfeder bewirkt.Furthermore, the shows DE 929 205 a clamp for receiving a replacement fuse. This clamp has two spaced clamps, which have a shape in cross section, which is adapted to the outer contour of the fuse to fix the latter captive. By differently deep-trained slots in the clamp independent spring force training of the individual clamp parts is effected with respect to holding the fuse and fixing the spare fuse holder to the coil spring.

Aus der CH 291 026 A ist ein Sicherungselement vorbekannt, das von einer Klemmkontaktierung aufgenommen und in diese eingesetzt werden kann. Die Ausbildung der dortigen Kontaktierungsabschnitte und Kontaktbacken gestattet jedoch keine Anwendungen bei Stoßströmen, sondern ist auf Schwachstrom-Anwendungen beschränkt.From the CH 291 026 A a security element is previously known, which can be picked up by a Klemmkontaktierung and used in this. However, the formation of the local contacting portions and contact jaws does not allow applications in surge currents, but is limited to low power applications.

Die US 2,802,920 A offenbart einen Sicherungshalter mit Klemmbacken und einer Teilfläche, die zwischen den Schenkeln eines U-förmigen Federbügels vorgesehen ist, wobei eine dortige Kontaktbacke und ein Federbügel in Längserstreckung der Sicherung gefügt und mittels Keilwirkung verklemmt werden.The US 2,802,920 A discloses a fuse holder with jaws and a partial surface which is provided between the legs of a U-shaped spring clip, wherein a local contact jaw and a spring clip are joined in the longitudinal extension of the fuse and clamped by means of wedging action.

Aus dem Vorgenannten ist es daher Aufgabe der Erfindung, eine weiterentwickelte Vorrichtung zur stoßstromfesten Klemmkontaktierung von elektrischen Bauteilen, insbesondere Bauteilen in rotationssymmetrischer Form anzugeben, wobei die Bauteile auf ihrer Mantelfläche beabstandete Kontaktierungsabschnitte aufweisen. Dabei gilt es, die Vorrichtung platzsparend und konstruktiv einfach zu realisieren, wobei eine stoßstromfeste, insbesondere blitzstoßstromfeste Kontaktierung gegeben sein soll und gleichzeitig ein Abbrandschutz zu bewirken ist. Weiterhin soll die Montage der Vorrichtung leicht zu realisieren und bezogen auf die nicht zu vermeidenden Toleranzen des zu kontaktierenden elektrischen Bauteils eine Variabilität gegeben sein.From the foregoing, it is therefore an object of the invention to provide a further developed device for shock-current resistant Klemmkontaktierung of electrical components, in particular components in rotationally symmetrical form, wherein the components have on its lateral surface spaced contacting sections. It is important, the device space-saving and constructive easy to implement, with a shock-current resistant, in particular lightning current resistant contact should be given and at the same time to cause erosion protection. Furthermore, the assembly of the device should be easy to implement and given the unavoidable tolerances of the electrical component to be contacted, a variability.

Die Lösung der Aufgabe der Erfindung erfolgt durch die Merkmalskombination nach Patentanspruch 1, wobei die Unteransprüche zweckmäßige Ausgestaltungen und Weiterbildungen umfassen.The object of the invention is achieved by the combination of features according to claim 1, wherein the subclaims include expedient refinements and developments.

Es wird demnach von einer Vorrichtung zur stoßstromfesten Klemmkontaktierung von elektrischen Bauteilen, insbesondere Bauteilen in rotationssymmetrischer Form ausgegangen. Diese Bauteile können z.B. zylinderförmige Sicherungen mit gegenüberliegenden metallischen Kontaktkappen sein.It is therefore assumed that a device for shock-current resistant Klemmkontaktierung of electrical components, in particular components in rotationally symmetrical form. These components may e.g. be cylindrical fuses with opposite metallic contact caps.

Die diesbezüglich auf der Mantelfläche der Bauteile vorhandenen beabstandeten Kontaktierungsabschnitte sollen mit der Vorrichtung elektrisch angeschlossen werden. Weiterhin umfasst die Vorrichtung zwei U-förmige, elektrisch leitfähige Kontaktbacken, welche eine Teilfläche besitzen, die der Kontur des jeweiligen Kontaktierungsabschnitts des elektrischen Bauteils komplementär ist.The existing in this regard on the lateral surface of the components spaced Kontaktierungsabschnitte to be electrically connected to the device. Furthermore, the device comprises two U-shaped, electrically conductive contact jaws, which have a partial surface which is complementary to the contour of the respective contacting section of the electrical component.

Unter der diesbezüglich komplementären Kontur wird ein Bereich der Mantelfläche des elektrischen Bauteils verstanden, und zwar dort, wo sich die Kontaktierungsabschnitte befinden.The complementary contour in this context is understood to mean a region of the lateral surface of the electrical component, specifically where the contacting sections are located.

Es gilt unter dem vorgenannten Aspekt und der Aufgabenstellung der Stoßstromtragfähigkeit, eine möglichst großflächige Kontaktierung zwischen den Kontaktbacken und dem elektrischen Bauteil zu bewerkstelligen. Punkt- oder linienförmige Kontakte, wie beim Stand der Technik anzutreffen, sollen vermieden werden.It is under the above aspect and the task of the surge current carrying capacity, as large as possible contact between the contact jaws and the electrical component to accomplish. Pointed or linear contacts, as encountered in the prior art, should be avoided.

Jeder Kontaktbacke ist ein im Wesentlichen U-förmiger Federbügel zugeordnet, welcher ebenfalls eine Teilfläche aufweist, die der Kontur des jeweiligen Kontaktierungsabschnitts des elektrischen Bauteils komplementär ist.Each contact jaw is associated with a substantially U-shaped spring clip, which also has a partial surface which is complementary to the contour of the respective contacting portion of the electrical component.

Diese Teilfläche ist erfindungsgemäß im Verbindungsabschnitt zwischen den Schenkeln des U-förmigen Federbügels vorgesehen.
Im Montagezustand tauchen die U-Schenkel des Federbügels zwischen der Mantelfläche des elektrischen Bauteils und dem jeweiligen U-Schenkel der jeweiligen Kontaktbacke ein und werden gegeneinander rastend fixiert.This partial surface is inventively provided in the connecting portion between the legs of the U-shaped spring clip.
In the assembled state, the U-legs of the spring clip between the lateral surface of the electrical component and the respective U-leg of the respective contact jaw dive and are fixed against each other latching.

In einer bevorzugten Ausgestaltung sind in den Schenkeln des Federbügels Rastöffnungen vorhanden, in welche Rastnasen der Klemmbacken selbstsichernd eingreifen. Hier ist es im Sinne der Erfindung liegend, eine kinematische Umkehr zwischen Rastnasen und Rastöffnungen bezüglich Federbügel und Klemmbacken vorzunehmen.In a preferred embodiment, latching openings are present in the legs of the spring clip, in which locking lugs of the jaws engage self-locking. Here it is within the meaning of the invention, to make a kinematic reversal between locking lugs and locking openings with respect to spring clip and jaws.

Die Federbügel besitzen im Übergangsbereich zwischen den Seitenschenkeln und dem Schenkelverbindungsabschnitt je eine schulterförmige Ausprägung, welche im Montagezustand eine Federkraft aufbaut, wobei hierfür die schulterförmigen Ausprägungen nicht an der Mantelfläche des Bauteils zur Anlage kommen.The spring clips have in the transition region between the side legs and the leg connecting portion depending on a shoulder-shaped expression, which builds a spring force in the assembled state, for which purpose the shoulder-shaped forms do not come to the lateral surface of the component to the plant.

Über die Größe der Teilflächen der Kontaktbacken kann je nach Anwendungsfall die Stromtragfähigkeit vorgegeben werden, ohne das erfindungsgemäße Prinzip zu verlassen.Depending on the application, the current-carrying capacity can be predetermined via the size of the partial surfaces of the contact jaws, without leaving the inventive principle.

Die Rastfixierung zwischen den Klemmbacken und den Federbügeln kann bei einer bevorzugten Ausführungsform stromflussfrei gehalten werden. Hierfür sind die Federbügel entweder nichtleitend ausgebildet oder weisen eine elektrische Isolationsbeschichtung bzw. eine Isolationszwischenlage hinsichtlich der Kontaktierungsabschnitte des elektrischen Bauteils auf.The locking fixation between the jaws and the spring clips can be kept free of current flow in a preferred embodiment. For this purpose, the spring clips are either non-conductive or have an electrical insulation coating or an insulation intermediate layer with respect to the contacting portions of the electrical component.

In einer Ausgestaltung der Erfindung können die Kontaktbacken Anschlussfortsätze und/oder Lötkontakte aufweisen. Die Anschlussfortsätze können als Schraubkontakte, Steckkontakte oder dergleichen ausgebildet werden.In one embodiment of the invention, the contact jaws may have connection extensions and / or solder contacts. The connection extensions can be formed as screw contacts, plug contacts or the like.

Bei einer erfindungsgemäßen Ausführungsform entspricht der lichte Innenabstand der U-Schenkel der Klemmbacken im Wesentlichen dem Durchmesser oder der Breite des elektrischen Bauteils im Bereich seiner Kontaktierungsabschnitte. Wiederum bevorzugt ist der vorerwähnte lichte Innenabstand um einen geringen Betrag größer als der Durchmesser bzw. die Breite des elektrischen Bauteils im Bereich der Kontaktierungsabschnitte. Das Differenzmaß bezüglich des lichten Innenabstands der U-Schenkel der Klemmbacken und zum Durchmesser oder der Breite des elektrischen Bauteils ist dabei so groß, dass die Federbügel leicht in ihre gewünschte Position zwischen Klemmbacke und elektrischem Bauteil eingebracht und dort verrastend fixiert werden können.In an embodiment according to the invention, the clear inner spacing of the U-legs of the clamping jaws essentially corresponds to the diameter or the width of the electrical component in the region of its contacting sections. Again preferred is the aforementioned inside clearance around a small amount greater than the diameter or the width of the electrical component in the region of the contacting sections. The difference in dimension with respect to the clear inner spacing of the U-legs of the jaws and the diameter or width of the electrical component is so large that the spring clip can be easily inserted into its desired position between the jaw and electrical component and fixed there latching.

In einer bevorzugten Ausführungsform der Erfindung ist die Steifigkeit und Materialstärke der Klemmbacken größer als diejenige der Federbügel. Die Materialauswahl und die Materialeigenschaften des Federbügels sind primär auf die leichte Montierbarkeit und das Aufbauen der gewünschten Vorspann-Federkraft gerichtet. Hingegen wird die Materialauswahl der Klemmbacken unter dem Aspekt der optimalen Strombelastbarkeit gewählt. Damit sind die vorerwähnten Bauteile hinsichtlich ihrer gewünschten Funktion unabhängig voneinander optimierbar.In a preferred embodiment of the invention, the stiffness and material thickness of the jaws is greater than that of the spring clip. The material selection and material properties of the spring clip are primarily directed to the ease of assembling and building the desired preload spring force. On the other hand, the material selection of the jaws is chosen in terms of optimum current carrying capacity. Thus, the aforementioned components can be optimized independently of each other in terms of their desired function.

Selbstverständlich liegt es auch im Wesen der Erfindung, die Federbügel ebenfalls elektrisch leitfähig auszuführen, um einen Teilstrom aufzunehmen.Of course, it is also in the nature of the invention, the spring clip also perform electrically conductive to accommodate a partial flow.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme von Figuren näher erläutert werden.The invention will be explained below with reference to an embodiment and with the aid of figures.

Hierbei zeigen:

Fig. 1
einen Querschnitt durch die erfindungsgemäße Vorrichtung zur stoßstromfesten Klemmkontaktierung eines im Wesentlichen zylindrischen elektrischen Bauteils, umfassend eine Kontakt- oder Klemmbacke sowie einen U-förmigen Federbügel;
Fig. 2
eine Längsschnittdarstellung des zu kontaktierenden elektrischen Bauteils mit auf der Mantelfläche des Bauteils beabstandet angeordneten Kontaktierungsabschnitten, die die gewünschten Kontaktflächen bilden und
Fig. 3 und 4
perspektivische Darstellungen der erfindungsgemäßen Vorrichtung.
Hereby show:
Fig. 1
a cross section through the device according to the invention for shock-current resistant Klemmkontaktierung a substantially cylindrical electrical component, comprising a contact or jaw and a U-shaped spring clip;
Fig. 2
a longitudinal sectional view of the electrical component to be contacted with arranged on the lateral surface of the component spaced contacting sections, which form the desired contact surfaces and
3 and 4
perspective views of the device according to the invention.

Die erfindungsgemäße Vorrichtung gemäß der Darstellung nach Fig. 1 geht zunächst von einem elektrischen Bauteil 3 aus. Dieses Bauteil (siehe Fig. 2) kann rotationssymmetrisch, insbesondere zylindrisch gestaltet und in Form einer Sicherung mit gegenüberliegenden Kontaktflächen 7 ausgebildet sein.The device according to the invention according to the illustration Fig. 1 initially starts from an electrical component 3. This component (see Fig. 2 ) may be rotationally symmetrical, in particular cylindrically shaped and formed in the form of a fuse with opposite contact surfaces 7.

Um die Kontaktflächen 7 elektrisch zu kontaktieren, sind zwei elektrisch leitfähige Kontaktbacken 1 vorhanden, welche eine Teilfläche 4 besitzen, die der Kontur des jeweiligen Kontaktierungsabschnitts 7 des elektrischen Bauteils 3 komplementär ist.In order to contact the contact surfaces 7 electrically, two electrically conductive contact jaws 1 are present, which have a partial surface 4 which is complementary to the contour of the respective contacting section 7 of the electrical component 3.

Jeder Kontaktbacke 1 ist ein U-förmiger Federbügel 2 zugeordnet, welcher ebenfalls eine Teilfläche 5 aufweist, die der Kontur des jeweiligen Kontaktierungsabschnitts 7 des elektrischen Bauteils 3 komplementär ist.Each contact jaw 1 is associated with a U-shaped spring clip 2, which likewise has a partial surface 5 which is complementary to the contour of the respective contacting section 7 of the electrical component 3.

Diese Teilfläche 5 ist im Verbindungsabschnitt zwischen den Schenkeln 6 und 6' des U-förmigen Federbügels 2 vorgesehen.This partial surface 5 is provided in the connecting portion between the legs 6 and 6 'of the U-shaped spring clip 2.

Im Montagezustand tauchen die U-Schenkel 6, 6' des Federbügels 2 zwischen der Mantelfläche des elektrischen Bauteils 3 und dem jeweiligen U-Schenkel der jeweiligen Kontaktbacke 1 ein und werden gegeneinander rastend fixiert. Um diese Rastfixierung zu bewerkstelligen, sind in den Schenkeln 6, 6' des Federelements 2 fensterartige Ausnehmungen 2' vorhanden, in die entsprechende Rastnasen 1' eingreifen. Die Rastfunktion kann hier mehrstufig erfolgen, um die Kontaktkraft an den Flächen 4 und 5 zu erhöhen. Diese Mehrstufigkeit der Rastmöglichkeit wird durch mehrere in Reihe liegende Öffnungen 2' und Rastnasen 1' bewerkstelligt.In the assembled state, the U-legs 6, 6 'of the spring clip 2 dive between the lateral surface of the electrical component 3 and the respective U-legs of the respective contact jaw 1 and are fixed against each other latching. In order to accomplish this locking fixation, 2 window-like recesses 2 'are present in the legs 6, 6' of the spring element, engage in the corresponding locking lugs 1 '. The locking function can take place here in several stages to increase the contact force on the surfaces 4 and 5. This multi-stage locking possibility is accomplished by several in-line openings 2 'and locking lugs 1'.

Der jeweilige Federbügel 2 weist im Übergangsbereich zwischen den seitlichen Schenkeln 6, 6' und dem Schenkelverbindungsabschnitt 5 eine schulterförmige Ausprägung 10 auf, welche im Montagezustand die gewünschte Federkraft aufbaut. Hierfür kommen die schulterförmigen Ausprägungen 10 nicht an der Mantelfläche bzw. Kontaktfläche 7 des Bauteils 3 zur Anlage.The respective spring clip 2 has in the transition region between the lateral legs 6, 6 'and the leg connecting portion 5 a shoulder-shaped expression 10, which builds up the desired spring force in the assembled state. For this purpose, the shoulder-shaped forms 10 do not come to the lateral surface or contact surface 7 of the component 3 to the plant.

Es besteht also die Kontaktierungsvorrichtung aus einer Aufnahme gebildet durch die Klemmbacke aus einem elektrisch leitenden Material sowie einem Gegenstück in Form des Federbügels 2.Thus, the contacting device consists of a receptacle formed by the clamping jaw of an electrically conductive material and a counterpart in the form of the spring clip. 2

Mit Hilfe der vorerwähnten Mittel wird das elektrische Bauteil 3, welches außen liegende Leitflächen besitzt, zur Übertragung von Strömen kontaktiert.With the aid of the aforementioned means, the electrical component 3, which has outer fins, contacted for the transmission of currents.

Die Kontakt- oder Klemmbacke 1 ist geometrisch im Bereich der Kontaktfläche 4 so gestaltet, dass das elektrische Bauteil 3 partiell in seiner Lage fixierbar ist.The contact or clamping jaw 1 is geometrically designed in the region of the contact surface 4 such that the electrical component 3 can be partially fixed in its position.

Idealerweise ist diesbezüglich die entsprechende Kontaktbacke so ausgeformt, dass sich eine komplementäre Gestalt zum elektrischen Bauteil im Bereich der Kontaktfläche 4 ergibt.Ideally, in this regard, the corresponding contact jaw is formed so that a complementary shape to the electrical component in the region of the contact surface 4 results.

Durch von oben vorgenommenes Aufstecken des Federbügels 2 wird der Kontakt zwischen elektrischem Bauteil 3 und der jeweiligen Kontaktbacke 1 hergestellt. Hierbei entsteht eine weitere Kontaktfläche 5. Diese Kontaktfläche 5 kann bedarfsweise zusätzlich als elektrische Kontaktstelle genutzt werden, wenn das Federelement bzw. der Federbügel 2 aus elektrisch leitfähigem Material besteht.By making the top of the spring clip 2 made from above, the contact between the electrical component 3 and the respective contact jaw 1 is made. This contact surface 5, if necessary, additionally be used as an electrical contact point when the spring element or the spring clip 2 consists of electrically conductive material.

Aufgrund der mehrstufigen Rastfunktion können unterschiedliche Durchmesser oder Konturen elektrischer Bauteile mit der gleichen Grundkonstruktion der erfindungsgemäßen Vorrichtung geklemmt und kontaktiert werden.Due to the multi-stage locking function different diameters or contours of electrical components can be clamped and contacted with the same basic construction of the device according to the invention.

Wie bereits erläutert, weist Federbügel 2 an jeder Seite eine frei bewegliche schulterförmige Ausprägung 10 auf, die nach unten drückbar ist, und zwar um den Winkel W, so dass eine Vorspannung der Federelementekraft F1' aufgebaut wird.As already explained, has spring clip 2 on each side of a freely movable shoulder-shaped expression 10 which can be pressed down, by the angle W, so that a bias of the spring element force F1 'is constructed.

Durch die zusätzliche Verriegelung des Federbügels 2 zwischen dem Bauteil 3 und der Kontaktplatte 1 kann sich diese nicht selbständig lösen. Durch die aufgrund der federnden Eigenschaften aufgebaute Kraft F1 bzw. F1' im Bereich des Schultermaßes des vorgespannten Federbügels 2 wird das Schultermaß Y verringert, da der Federbügel 2 durch die Verrastung 1' und 2' an einer Bewegung in Richtung der Kraft F1 gehindert ist. Die entstehende Längenänderung X versucht der Federbügel 2 durch eine Verringerung des Schultermaßes Y je Seite um das Maß Y' auszugleichen. Daran wird der Federbügel 2 aber gehindert, da sich die Schenkel 6, 6' am Bauteil 3 im Bereich Z abstützen.Due to the additional locking of the spring clip 2 between the component 3 and the contact plate 1, this can not solve independently. Due to the built-up due to the resilient properties of the force F1 or F1 'in the range of the shoulder dimension of the prestressed spring clip 2, the shoulder dimension Y is reduced because the spring clip 2 by the latch 1' and 2 'on a Movement in the direction of force F1 is prevented. The resulting change in length X tries the spring clip 2 by a reduction of the shoulder Y Y per side by the dimension Y 'compensate. However, the spring clip 2 is prevented because the legs 6, 6 'are supported on the component 3 in the region Z.

Über einen Hebelarm am Abstützpunkt Z wirkt die Kraft F2 auf die Verrastung. Je höher die Kraft F1 ist, desto stärker bildet sich die Kraft F2 aus und es erhöht sich damit die Festigkeit der Verrastung. Hierdurch ist ein zusätzlicher Schutz gegen die Auswirkungen von Vibrationen gegeben.Via a lever arm at the support point Z, the force F2 acts on the latching. The higher the force F1, the stronger the force F2 is formed and thus the strength of the locking increases. This provides additional protection against the effects of vibration.

Grundsätzlich besteht ein Abbrandschutz an der Verrastungsstelle, da der Stromübergang vorzugsweise über die Kontaktflächen 4 erfolgt.In principle, there is erosion protection at the latching point, since the current transfer preferably takes place via the contact surfaces 4.

Insofern kann der Federbügel 2 auch aus einem nichtleitenden Material bestehen oder zumindest keine elektrische Verbindung zum elektrischen Bauteil aufweisen.In this respect, the spring clip 2 may also consist of a non-conductive material or at least have no electrical connection to the electrical component.

Wenn der Federbügel 2 aus einem leitenden Material ohne Isolierung zum Bauteil 3 besteht, bildet sich ein stromdurchflossener Leiter aus, welcher versucht, sich bei Stromfluss zu strecken. Auch hierdurch resultiert eine Erhöhung der Halte- bzw. Anpresskraft F2.If the spring clip 2 consists of a conductive material without insulation to the component 3, a current-carrying conductor is formed, which tries to stretch when current flows. This also results in an increase of the holding or pressing force F2.

Die Kontaktierung auf der Kontaktfläche 7 nach Fig. 2 kann die Längentoleranzen des zu klemmenden oder zu kontaktierenden Bauteils 3 (Maß L) ausgleichen, was wesentliche Vorteile im Vergleich zu einer Kontaktierung auf den Stirnseiten darstellt, bei der Längentoleranzen problematisch sind.The contact on the contact surface 7 after Fig. 2 can compensate for the length tolerances of the component 3 to be clamped or contacted (dimension L), which represents significant advantages in comparison with contacting on the end faces, in which length tolerances are problematic.

Die Kontaktierung auf der Mantelfläche ist hierbei unabhängig von der Länge und der relativen Position der Kontakt-/Mantelfläche 7.The contact on the lateral surface is independent of the length and the relative position of the contact / lateral surface 7.

Durch eine Verbreiterung der Kontaktflächen 4 und 5 kann die funktionelle Stromübergangsfläche quasi beliebig erhöht werden, so dass eine höhere Stromtragfähigkeit die Folge ist.By broadening the contact surfaces 4 and 5, the functional current transition surface can be increased virtually arbitrarily, so that a higher current carrying capacity is the result.

Die Vorrichtung ist darüber hinaus vor Beschädigungen im Gegensatz zu einer Kontaktierung der Stirnseite 8 mit Ausbauchung 8' geschützt.The device is also protected from damage in contrast to a contacting of the end face 8 with bulge 8 '.

Die Fig. 3 und 4 zeigen perspektivische Darstellungen der erfindungsgemäßen Vorrichtung zur stoßstromfesten Klemmkontaktierung von elektrischen Bauteilen, z.B. in Form einer Sicherung.The 3 and 4 show perspective views of the device according to the invention for shock-current resistant Klemmkontaktierung of electrical components, for example in the form of a fuse.

Bei der Darstellung nach Fig. 3 erfolgt der Stromübergang primär über die unteren Kontaktbacken 1, wobei der Bereich der Verrastung elektrisch belastet wird.In the presentation after Fig. 3 the current transition is primarily via the lower contact jaws 1, wherein the region of the latching is electrically loaded.

Erfolgt als erfindungsgemäße Variante gemäß Fig. 4 die Stromeinleitung und/oder Stromableitung über den oberen Federbügel 2 mit dort dargestellten Anschlussteilen, wird ein Teil des Stroms sowohl über die Kontaktstelle 4 und 5 (siehe Fig. 1) als auch über den leitenden Federbügel 2 selbst und somit wiederum über die Verrastungsgeometrie geleitet. Geht man davon aus, dass sich ein stromdurchflossener Leiter, in diesem Fall der Federbügel 2, versucht zu strecken, wird sich der Winkel U (siehe Fig. 1) aufzuweiten versuchen, wodurch die Anpresskraft F2 auf die Kontaktbacken 1 erhöht ist. Hier wird vorausgesetzt, dass die Klemmbacken 1 eine höhere Steifigkeit als diejenige des Federbügels 2 besitzen.Is carried out according to the variant of the invention Fig. 4 the current introduction and / or current discharge via the upper spring clip 2 with connection parts shown there, a portion of the current via both the contact point 4 and 5 (see Fig. 1 ) and also on the conductive spring clip 2 itself and thus in turn passed over the Verrastungsgeometrie. Assuming that a current-carrying conductor, in this case the spring clip 2, tries to stretch, the angle U (see FIG Fig. 1 ) widen, whereby the contact force F2 is increased to the contact jaws 1. Here it is assumed that the jaws 1 have a higher rigidity than that of the spring clip 2.

Darüber hinaus ist es zur weiteren Erhöhung der Kraft F2 denkbar, die Kontaktfläche 5 zwischen den Klemmbacken 1 und Federbügel 2 komplett oder teilweise elektrisch zu isolieren, um den Strom bewusst über den Federbügel zu führen. Auch hier wäre eine Steuerung des Stromflusses über eine Wahl des Kontaktwiderstands an der Kontaktfläche 5 denkbar. Der Kontaktwiderstand lässt sich über die Materialauswahl oder die Oberflächenbeschaffenheit beeinflussen.Moreover, in order to further increase the force F2, it is conceivable to completely or partially electrically insulate the contact surface 5 between the clamping jaws 1 and spring clip 2, in order to deliberately conduct the current over the spring clip. Again, a control of the current flow through a choice of contact resistance at the contact surface 5 would be conceivable. The contact resistance can be influenced by the choice of material or the surface condition.

Durch die sich einstellende höhere Anpresskraft ergibt sich ein verbesserter Stromübergang, eine bessere Fixierung der Verrastung, eine Möglichkeit der Steuerung des Stromflusses sowie die Verteilung des Stroms auf mehrere Kontaktstellen mit einer insgesamt erhöhten Stromtragfähigkeit.The self-adjusting higher contact pressure results in an improved current transition, a better fixation of the latch, a way of controlling the flow of current and the distribution of the current over several contact points with an overall increased current carrying capacity.

Claims (8)

  1. Device for surge current-resistant terminal contacting of electrical components (3) such as components of a rotationally symmetrical shape, wherein the components (3) have spaced contacting portions (7) on their envelope surfaces, furthermore comprising two U-shaped, electrically conductive contact jaws (1) which have a partial surface (4) which is at least partially complementary to the contour of the electrical component's (3) respective contacting portion (7), wherein to each contact jaw (1) a U-shaped spring bow (2) is associated which likewise exhibits a partial surface (5) which is complementary to the electrical component's (3) respective contacting portion (7), and, when in the mounted state, the U-legs (6, 6') of the spring bow (2) plunge between the electrical component's (3) envelope surface and the respective contact jaw's (1) respective U-leg and are fixed in a mutually locking manner,
    characterized in that
    the partial surface (5) is provided in the connecting portion between the legs (6, 6') of the U-shaped spring bow (2).
  2. Device according to claim 1,
    characterized in that
    locking openings (2'), into which locking tabs (1') of the clamping jaws (1) engage, are present in the spring bow's (2) legs.
  3. Device according to claim 1 or 2,
    characterized in that,
    in the transition zone between the lateral legs (6, 6') and the leg connecting portion, the spring bows (2) each have a shoulder-shaped shaping (10) which builds up a spring force in the mounted state, wherein the shoulder-shaped shapings (10) do not come to rest against the component's (3) envelope surface (7) for this purpose.
  4. Device according to any one of the preceding claims,
    characterized in that
    the current carrying capacity can be preset by way of the size of the contact jaws' (1) partial surfaces (4).
  5. Device according to any one of the preceding claims,
    characterized in that
    the locking fixing between the clamping jaws (1) and the spring bow (2) is kept free from any current flow, and the spring bows (2) are formed to be non-conducting or have an electrical insulating layer or insulating coating for this purpose.
  6. Device according to any one of the preceding claims,
    characterized in that
    the contact jaws (1) have terminal tabs and/or solder contacts.
  7. Device according to any one of the preceding claims,
    characterized in that
    the clear distance of the clamping jaw's (1) U-legs corresponds substantially to the diameter or width of the electrical component (3) in the zone of its contacting portions.
  8. Device according to any one of the preceding claims,
    characterized in that
    the clamping jaw's (1) rigidity and material strength is greater than that of the spring bows (2).
EP13716253.3A 2012-04-05 2013-04-05 Device for surge-current-resistant terminal contacting of electrical components Not-in-force EP2834827B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012007048 2012-04-05
DE201210011166 DE102012011166A1 (en) 2012-04-05 2012-06-05 Device for shock-current resistant clamping contacting of electrical components
PCT/EP2013/057163 WO2013150128A1 (en) 2012-04-05 2013-04-05 Device for surge-current-resistant terminal contacting of electrical components

Publications (2)

Publication Number Publication Date
EP2834827A1 EP2834827A1 (en) 2015-02-11
EP2834827B1 true EP2834827B1 (en) 2016-02-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13716253.3A Not-in-force EP2834827B1 (en) 2012-04-05 2013-04-05 Device for surge-current-resistant terminal contacting of electrical components

Country Status (5)

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US (1) US9263220B2 (en)
EP (1) EP2834827B1 (en)
CN (1) CN104272422B (en)
DE (1) DE102012011166A1 (en)
WO (1) WO2013150128A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10044022B2 (en) * 2015-10-28 2018-08-07 Ford Global Technologies, Llc Finger proof fuse retention
CN108933067B (en) * 2018-08-28 2019-08-23 黄山泰客轨道电气有限公司 Trolley coach accumulator box fuse assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1194882A (en) * 1916-08-15 Joseph sachs
US1917860A (en) * 1931-01-22 1933-07-11 Earl Electric Mfg Company Electrical fuse plug support
US1916711A (en) * 1932-04-11 1933-07-04 Leonard Electric Mfg Company Fuse tightener
GB525383A (en) * 1938-02-19 1940-08-27 British Thomson Houston Co Ltd Improvements in or relating to electric fuse contacts
CH291026A (en) * 1950-09-30 1953-05-31 Ag H Schurter Fuse element for low-voltage equipment fuses.
DE929205C (en) 1953-11-06 1955-06-20 Wickmann Werke Ag Holder for fuses consisting of two housing halves
US2802920A (en) * 1954-08-11 1957-08-13 Jr Joseph D Kinnear Fuse holder
US3295806A (en) * 1964-10-03 1967-01-03 Modeme Robert Two part clip for attaching a cylindrical member to a support
GB1567323A (en) * 1976-04-15 1980-05-14 Belling & Lee Ltd Electrical fuse holders
GB2096413A (en) * 1981-04-07 1982-10-13 Hayes Derek A cartridge-fuse clip assembly
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US5145415A (en) * 1991-03-18 1992-09-08 Siemens Electric Limited Load base with integral wire lug and wire lug retainer
FR2795229B1 (en) 1999-06-17 2001-08-03 Ferraz JAW FOR FUSE HOLDER AND FUSE HOLDER PROVIDED WITH SUCH A JAW
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CN202111036U (en) * 2011-07-11 2012-01-11 温州市方为熔断器有限公司 Fuse support

Also Published As

Publication number Publication date
DE102012011166A1 (en) 2013-10-10
EP2834827A1 (en) 2015-02-11
US20150111412A1 (en) 2015-04-23
CN104272422A (en) 2015-01-07
CN104272422B (en) 2016-03-23
WO2013150128A1 (en) 2013-10-10
US9263220B2 (en) 2016-02-16

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