EP2382693B1 - Fixing device for fixing a cable at a housing feed-through - Google Patents

Fixing device for fixing a cable at a housing feed-through Download PDF

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Publication number
EP2382693B1
EP2382693B1 EP10700978.9A EP10700978A EP2382693B1 EP 2382693 B1 EP2382693 B1 EP 2382693B1 EP 10700978 A EP10700978 A EP 10700978A EP 2382693 B1 EP2382693 B1 EP 2382693B1
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EP
European Patent Office
Prior art keywords
housing
ring
locking
feed
cable
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.)
Active
Application number
EP10700978.9A
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German (de)
French (fr)
Other versions
EP2382693A1 (en
Inventor
Reinhard Nolting
Sven Elsässer
Bernd KÜPPERS
Matthias Bönsch
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.)
Weidmueller Interface GmbH and Co KG
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Weidmueller Interface GmbH and Co KG
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Publication of EP2382693A1 publication Critical patent/EP2382693A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5816—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part for cables passing through an aperture in a housing wall, the separate part being captured between cable and contour of aperture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/595—Bolts operating in a direction transverse to the cable or wire

Definitions

  • the invention relates to a fixing device for fixing a cable to a housing bushing according to the preamble of claim 1.
  • Fixing device for fixing cables to a housing bushing are known per se in various embodiments, so from the generic DE 202 16 556 U1 , The state of the art still the US 4,460,232 , the US 5,354,213 A , the US 3,526,871 A , the US 5,315,684 A. and the DE 20 2007 005 126 U1 called.
  • the cable is considered to be at least one conductor surrounding at least one insulation. If more than one conductor each surrounding an insulation is provided, these conductors can be embedded in a supplementary cable sheath and / or surrounded by a cable shield.
  • latching means for latching the cable to the housing passage are formed on the latching ring and on the housing.
  • the housing has a passage, which is designed for passing the cable and which is designed to receive a ring lug of the locking ring.
  • the housing has a housing approach, which is provided with the passage channel.
  • the passage channel can have a greater length than the thickness of the housing wall outside the housing projection.
  • the fixing device can be designed according to a preferred embodiment with a sealing element, in particular with a radially acting O-ring and in high protection class.
  • the locking ring provided with at least one fixing element for axially fixing the locking ring on the outer circumference of the cable.
  • the cable gland is suitable for receiving very high tensile forces.
  • the fixing element can be designed as a threaded pin which can be screwed into a radial threaded bore of the locking ring.
  • the cost-effective design with only a few elements. On a separate strain relief over the threaded pin addition can be omitted.
  • the threaded pin as a fixing
  • other fixing elements may be provided, such as commercial screws, a clamping and / or a cutting fork, which firmly clamped the insulation or easily at the radius set so that the clamping and / or cutting cable is fixed axially on the outer circumference of the conductor, wherein the clamping or cutting cable is radially screwed into a corresponding recess on the locking ring.
  • connecting devices as a direct plug-in terminal (push-in) can also be done connecting the conductor and fixing the fixing ring on the housing bushing or on the ring approach in a single operation.
  • push-in can also be done connecting the conductor and fixing the fixing ring on the housing bushing or on the ring approach in a single operation.
  • a simple and safe installation in the field is given by.
  • the conductor end may possibly also be provided with a clamping contact or another contact, which in turn can then be inserted into a connection device.
  • a connection device is further to supplement that this may also be a tension spring, in particular in the open position.
  • the state of the art is the DE 10 2006 007 604 A1 , the DE 20 2004 005 878 U1 , the DE 202 05 059 U1 , the DE 202 17 501 U1 , the DE 62 06 714 B1 and the DE 209 29 205 T2 called.
  • FIGS. 1 to 5 show individually and in their interaction a fixing device 1 for fixing a single conductor cable with a conductor 2, which is surrounded by an insulation 3, on a housing feedthrough 4 of a housing fifth
  • the fixing device 1 is in principle also suitable for fixing multi-conductor cables (not shown here).
  • the housing 5 is particularly preferred embodiment designed as a connection box for connecting conductors to (not shown here) head of a solar panel.
  • the housing 5 here has a multi-part construction with a lower part 6 and a cover part 7.
  • the housing 5 as a connection box for solar panels, the housing 5 includes a connection for connecting conductor ends to solar panels (not shown here) and the housing 5 is fixed on the solar panel.
  • the housing 5 also preferably serves to accommodate electrical or electronic components, in particular diodes. It also serves to connect the conductor 2 to the solar panel.
  • connection devices 8 are arranged in the housing 5, which are formed in a preferred embodiment as terminals.
  • the connection terminals may be, in particular, screw terminals or spring terminals, but they can also be designed in a different connection technology. Particular preference is given to using so-called compression spring clamps in direct plug-in technology (push-in), which are designed such that the inserted conductor 2 displaces a clamping spring during insertion, which presses the inserted conductor 2 against a busbar 3, so that a conductive contact is established.
  • push-in contacts which are particularly suitable for a tool-free quick connection are known per se, so that they will not be described in more detail here.
  • connection devices 8 By inserting the conductors 2 into the connection devices 8 and contacting the conductors 2 with the connection devices 8, an electrical contact is made. It is necessary to guide the conductor 2 with the insulation 3 through the housing bushing 4 and fix it axially in this area for strain relief. Particularly preferred is a sealed Implemented housing guide 4 in a relatively high degree of protection, so that the housing 5 can be used on solar panels in the open air.
  • the housing feedthrough 4 of the housing 5 has a housing extension 9 protruding on the housing 5 towards the outside thereof, preferably at least partially inside, with a passage channel 10 for the cable 2.
  • First locking means 11 are formed, which are designed to cooperate with yet to be explained corresponding locking means 12 of a locking ring 13.
  • the locking means 11 and 12 are formed as latching hooks which are plugged together latchable.
  • the lock can be designed so that it can be opened again (repeated clicks) or not be reopened (one click).
  • the locking ring 13 has a substantially cylindrical annular projection 14, which is designed to be inserted into a corresponding first inner portion 15 of the housing projection 9.
  • the locking ring also has an axially passing through cable duct 25 and a flange portion 26, which largely closes the neck 9 at the free end in the assembled state, wherein it passes through the cable.
  • the passage channel 10 is formed as a housing wall opening. He has a stepped contour. towards the outside, the first inner section 15 of larger inner diameter is provided, to which a second inner section 16 of smaller inner diameter adjoins the interior of the housing, whose inner circumference substantially corresponds to the outer circumference of the cable to be connected, here the conductor 2 with the insulation 3.
  • the inner portion 15, however, has an inner diameter corresponding to the outer diameter of the annular shoulder 14 of the locking ring 13, wherein the inner diameter of the locking ring 13 is adapted to the outer diameter of the cable, ie the conductor 2 with the insulation 3.
  • a sealing element is arranged between the interior of the housing facing axial end of the annular shoulder 14 of the locking ring 13 and the gradation between the inner portions 15 and 16 of the duct 10.
  • this sealing element is designed as a sealing ring 17.
  • an O-ring or a molded seal is used as a sealing ring, which / is designed such that its / the cross section is slightly larger than the radial distance between the outer diameter of the conductor insulation 3 and the inner circumference of the inner portion 15 of the feedthrough channel 10.
  • On the Seal can also be dispensed with and a seal can be achieved by press fitting. This seals the ring 13, which is pressed into the housing, on plastic (especially at lower tightness classes).
  • the sealing ring acts radially sealing, whereby an excellent sealing effect on the housing bushing 4 is realized.
  • the transition between the inner portions 15 and 16 may be conical. It is also conceivable that the inner inner portion 16 of the duct 10, a further conical inner portion 23 connects, which forms a kind of insertion funnel for the conductor 2 in the connecting device 8.
  • the passage channel may further have a region 27 again larger diameter (possibly with a polygonal inner contour), in which the flange-like axial end 26 of the locking ring 13 can be inserted.
  • the conductor end is stripped at an embodiment of the connecting device 8 as a plug-in terminal at its free end.
  • the locking ring 13 is pushed onto the free cable end before mounting (see Fig. 4 ) and immovably fixed in predetermined axial position at the cable end.
  • the fixing element 18 may be formed as a threaded pin which is screwed into an axially extending threaded bore 19 in the annular shoulder 14 of the locking ring 13.
  • the fixing element 18 is set in a simple manner on the outer diameter of the cable.
  • the threaded pin 18 is dimensioned such that it is completely screwed into the threaded hole 19 when setting radially so that its radial end no longer protrudes from the threaded hole 19.
  • the annular shoulder 14 may also be provided with a radial projection 20.
  • This radial projection 20 is designed to be inserted into a corresponding receiving pocket 21 in the feed-through channel 10. This ensures that after assembly of the threaded pin 18 can not rotate radially out of the threaded hole.
  • the latching hooks 12 on the latching ring 13 are formed on one or more, preferably two latching webs 22 which extend radially outside of the outer periphery of the annular shoulder 14 parallel thereto, wherein the webs 22 are arranged radially spaced from the annular shoulder 14 so that they the housing extension. 9 of the outer circumference can overlap.
  • the latching hooks 11 on the outer circumference of the housing projection 9 are preferably arranged in radially extending receiving guides 24 for the latching arms 22, which are further preferably diametrically opposed as the latching arms.
  • the locking ring 13 is first pushed onto the free cable end, which is optionally stripped of insulation before or after.
  • the locking ring 13 is further fixed with the fixing element 18, preferably with the threaded pin, in the bore 19 in the appropriate position.
  • the sealing ring 17 is pushed pushed onto the annular shoulder 14 and the preassembled unit is guided in the axial direction in the housing 5, wherein the conductor 2 passes into the passage channel 10.
  • the lower housing part 6 may be configured such that it (preferably with a web 28) a latching hook 12 (in Fig. 5 the lower latching hooks) covers or advantageously ensures such that it can no longer be released from the latching on the corresponding latching hook 11 on the housing 5 (here on the housing upper part 7).
  • latching hooks are arranged according to the accompanying figures radially inwardly to the latching arms 22, they can also be oriented differently according to alternative embodiments. Thus, the latching hooks could point outwards or else latching clips would be realized, i. a split latching arm, wherein on the Rastarmenden two mutually directed away latch hook arrangements are provided (not shown here).
  • Fig. 6 shows that at least one or more axial webs 29 and / or at least one or more circumferential webs 30 may be advantageously formed on the inner circumference of the cable duct 25 of the locking ring 13.
  • This on the one hand has the advantage that the material of the insulation of the cable presses when tightening the threaded pin 18 in the space between the axial webs 29, so that the locking ring 13 and the cable are secured relative to each other in a simple manner against relative rotation and offers the other the advantage that the peripheral ridge 30 additionally secures the cable against relative axial movements relieving strain.
  • the catch hooks do not necessarily have to be prestressed so that a radial seal is achieved, which has an advantageous effect on the service life.
  • the sealing effect in the region of the sealing ring 17 can possibly be further increased by a labyrinth-like configuration of the regions adjacent to the sealing ring.

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Cable Accessories (AREA)

Description

Die Erfindung betrifft eine Fixiervorrichtung zum Fixieren eines Kabels an einer Gehäusedurchführung nach dem Oberbegriff des Anspruchs 1.The invention relates to a fixing device for fixing a cable to a housing bushing according to the preamble of claim 1.

Fixiervorrichtung zum Fixieren von Kabeln an einer Gehäusedurchführung sind an sich in verschiedenen Ausführungsformen bekannt, so aus der gattungsgemäße DE 202 16 556 U1 . Zum Stand der Technik werden noch die US 4 460 232 A , die US 5 354 213 A , die US 3 526 871 A , die US 5 315 684 A und die DE 20 2007 005 126 U1 genannt.Fixing device for fixing cables to a housing bushing are known per se in various embodiments, so from the generic DE 202 16 556 U1 , The state of the art still the US 4,460,232 , the US 5,354,213 A , the US 3,526,871 A , the US 5,315,684 A. and the DE 20 2007 005 126 U1 called.

Verbesserungsbedarf besteht gegenüber der gattungsgemäßen DE 202 16 556 U1 . insbesondere hinsichtlich einer möglichst einfachen Handhabung. Die Lösung dieses Problems ist die Aufgabe der Erfindung.Room for improvement compared to the generic DE 202 16 556 U1 , in particular with regard to the simplest possible handling. The solution to this problem is the object of the invention.

Die Erfindung löst diese Aufgabe durch den Gegenstand des Anspruchs 1.The invention solves this problem by the subject matter of claim 1.

Im Sinne der Erfindung wird als Kabel wenigstens ein von mindestens einer Isolierung umgebender Leiter angesehen. Sofern mehr als ein jeweils von einer Isolierung umgebende Leiter vorgesehen sind, können diese Leiter in einen ergänzenden Kabelmantel eingebettet und/oder von einem Kabelschirm umgeben sein.For the purposes of the invention, the cable is considered to be at least one conductor surrounding at least one insulation. If more than one conductor each surrounding an insulation is provided, these conductors can be embedded in a supplementary cable sheath and / or surrounded by a cable shield.

Nach dem Gegenstand des Anspruchs 1 wird ein besonders einfach handhabbare und dennoch besonders sichere Fixiervorrichtung für Gehäusedurchführungen geschaffen.After the subject of claim 1, a particularly easy to handle and yet very secure fixing device for housing feedthroughs is provided.

Es sind in einfacher Ausgestaltung zum rastenden Festlegen des Kabels an der Gehäusedurchführung korrespondierende Rastmittel am Rastring und am Gehäuse ausgebildet.In a simple embodiment, latching means for latching the cable to the housing passage are formed on the latching ring and on the housing.

Sodann weist das Gehäuse einen Durchführkanal auf, der zum Durchführen des Kabels ausgelegt ist und der zur Aufnahme eines Ringansatzes des Rastrings ausgelegt ist.Then, the housing has a passage, which is designed for passing the cable and which is designed to receive a ring lug of the locking ring.

Um den Ringansatz und ggf. eine Dichtung in diesem Durchführkanal unterbringen zu können, ist es vorteilhaft, dass das Gehäuse einen Gehäuseansatz aufweist, der mit dem Durchführkanal versehen ist. Derart kann der Durchführkanal eine größere Länge aufweisen als die Dicke der Gehäusewandung außerhalb des Gehäuseansatzes.In order to accommodate the annular shoulder and possibly a seal in this passage, it is advantageous that the housing has a housing approach, which is provided with the passage channel. In this way, the passage channel can have a greater length than the thickness of the housing wall outside the housing projection.

Die Fixiervorrichtung kann nach einer bevorzugten Ausgestaltung mit einem Dichtelement, insbesondere mit einem radial wirkenden O-Ring auch in hoher Schutzklasse ausgelegt werden.The fixing device can be designed according to a preferred embodiment with a sealing element, in particular with a radially acting O-ring and in high protection class.

Es ist der Rastring mit wenigstens einem Fixierelement zum axialen Fixieren des Rastringes am Außenumfang des Kabels versehen. Die Kabeldurchführung ist derart zur Aufnahme sehr hoher Zugkräfte geeignet.It is the locking ring provided with at least one fixing element for axially fixing the locking ring on the outer circumference of the cable. The cable gland is suitable for receiving very high tensile forces.

Nach einer konstruktiv besonders einfachen aber dennoch besonders funktionssicheren Variante kann das Fixierelement als ein Gewindestift ausgelegt sein, der in eine radiale Gewindebohrung des Rastringes einschraubbar ist. Hervorzuheben ist in diesem Zusammenhang auch die kostengünstige Ausgestaltung mit nur wenigen Elementen. Auf eine separate Zugentlastung über den Gewindestift hinaus kann verzichtet werden.After a structurally particularly simple but still particularly functionally reliable variant, the fixing element can be designed as a threaded pin which can be screwed into a radial threaded bore of the locking ring. To emphasize in this context, the cost-effective design with only a few elements. On a separate strain relief over the threaded pin addition can be omitted.

Anzumerken ist, dass anstelle des Gewindestifts als Fixierelement auch andere Fixierelemente vorgesehen sein können, so beispielsweise handelsübliche Schrauben, eine Klemm- und/oder eine Schneidgabel, welche die Isolierung festklemmend oder leicht am Radius einschneidend festlegen, so dass die Klemm- und/oder Schneidkabel axial am Außenumfang des Leiters festgelegt ist, wobei die Klemm- oder Schneidkabel in eine entsprechende Ausnehmung am Rastring radial einschraubbar ist.It should be noted that instead of the threaded pin as a fixing other fixing elements may be provided, such as commercial screws, a clamping and / or a cutting fork, which firmly clamped the insulation or easily at the radius set so that the clamping and / or cutting cable is fixed axially on the outer circumference of the conductor, wherein the clamping or cutting cable is radially screwed into a corresponding recess on the locking ring.

Bei einer Realisierung der Anschlussvorrichtungen als Direktsteck-Anschlussklemme (Push-In) können zudem das Anschließen des Leiters und das Festlegen des Fixierringes an der Gehäusedurchführung bzw. am Ringansatz in nur einem einzigen Arbeitsgang erfolgen. Eine einfache und sichere Montage im Feld ist dadurch gegeben.In a realization of the connecting devices as a direct plug-in terminal (push-in) can also be done connecting the conductor and fixing the fixing ring on the housing bushing or on the ring approach in a single operation. A simple and safe installation in the field is given by.

Anzumerken ist ferner, dass das Leiterende ggf. auch mit einem Klemmkontakt oder einem anderen Kontakt versehen sein kann, der dann seinerseits in eine Anschlussvorrichtung einschiebbar ist. In Hinsicht auf die Anschlussvorrichtung ist ferner zu ergänzen, dass es sich bei dieser auch um eine Zugfeder, insbesondere in geöffneter Stellung handeln kann.It should also be noted that the conductor end may possibly also be provided with a clamping contact or another contact, which in turn can then be inserted into a connection device. With regard to the connecting device is further to supplement that this may also be a tension spring, in particular in the open position.

Zum Stand der Technik werden die DE 10 2006 007 604 A1 , die DE 20 2004 005 878 U1 , die DE 202 05 059 U1 , die DE 202 17 501 U1 , die DE 62 06 714 B1 und die DE 209 29 205 T2 genannt.The state of the art is the DE 10 2006 007 604 A1 , the DE 20 2004 005 878 U1 , the DE 202 05 059 U1 , the DE 202 17 501 U1 , the DE 62 06 714 B1 and the DE 209 29 205 T2 called.

Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the dependent claims.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf die Zeichnung näher beschrieben. Es zeigt:

Figur 1
eine Sprengansicht eines Gehäuses, eines Kabels und einer Fixiervorrichtung im nicht montierten angeschlossenen Zustand;
Figur 2
die Anordnung aus Fig. 1 in teilgeschnittener Darstellung;
Figur 3
die Anordnung aus Fig. 1 in anderer perspektivischer Darstellung;
Figur 4
eine Schnittansicht der Anordnung aus Fig. 1 im nicht montierten Zustand; und
Figur 5
eine Schnittansicht der Anordnung aus Fig. 1 im montierten Zustand.
The invention will be described in more detail by means of exemplary embodiments with reference to the drawing. It shows:
FIG. 1
an explosive view of a housing, a cable and a fixing device in the unassembled connected state;
FIG. 2
the arrangement Fig. 1 in a partially sectioned illustration;
FIG. 3
the arrangement Fig. 1 in another perspective view;
FIG. 4
a sectional view of the arrangement Fig. 1 in unassembled condition; and
FIG. 5
a sectional view of the arrangement Fig. 1 in the assembled state.

Die Figuren 1 bis 5 zeigen jeweils einzeln sowie in ihrem Zusammenspiel eine Fixiervorrichtung 1 zum Fixieren eines Einleiterkabels mit einem Leiter 2, der von einer Isolierung 3 umgeben ist, an einer Gehäusedurchführung 4 eines Gehäuses 5.The FIGS. 1 to 5 show individually and in their interaction a fixing device 1 for fixing a single conductor cable with a conductor 2, which is surrounded by an insulation 3, on a housing feedthrough 4 of a housing fifth

Die Fixiervorrichtung 1 ist prinzipiell auch zur Fixierung von Mehrleiterkabeln geeignet (hier nicht dargestellt).The fixing device 1 is in principle also suitable for fixing multi-conductor cables (not shown here).

Das Gehäuse 5 ist besonders bevorzugter Ausführung als Anschlussbox zum Anschluss von Leitern an (hier nicht dargestellte) Leiter eines Solarpaneels ausgelegt. Das Gehäuse 5 weist hier einen mehrteiligen Aufbau mit einem Unterteil 6 und einem Deckelteil 7 auf.The housing 5 is particularly preferred embodiment designed as a connection box for connecting conductors to (not shown here) head of a solar panel. The housing 5 here has a multi-part construction with a lower part 6 and a cover part 7.

In einer bevorzugten Ausgestaltung des Gehäuses 5 als Anschlussbox für Solarpaneele beinhaltet das Gehäuse 5 einen Anschluss zum Anschließen von Leiterenden an Solarpaneelen (hier nicht dargestellt) und das Gehäuse 5 wird auf dem Solarpaneel festgelegt.In a preferred embodiment of the housing 5 as a connection box for solar panels, the housing 5 includes a connection for connecting conductor ends to solar panels (not shown here) and the housing 5 is fixed on the solar panel.

Das Gehäuse 5 dient ferner vorzugsweise zur Aufnahme von elektrischen oder elektronischen Bauelementen, insbesondere Dioden. Es dient ferner zum Anschluss der Leiter 2 an das Solarpaneel. Hierzu sind Anschlussvorrichtungen 8 im Gehäuse 5 angeordnet, die in bevorzugter Ausführungsform als Anschlussklemmen ausgebildet sind. Bei den Anschlussklemmen kann es sich um insbesondere um Schraubklemmen oder Federklemmen handeln, sie können aber auch in anderer Anschlusstechnik ausgelegt werden. Besonders bevorzugt werden sogenannte Druckfederklemmen in Direktstecktechnik (Push-in) eingesetzt, die derart ausgestaltet sind, dass der eingeschobene Leiter 2 eine Klemmfeder beim Einschieben verdrängt, die den eingeschobenen Leiter 2 gegen eine Stromschiene 3 presst, so dass ein leitender Kontakt hergestellt ist. Derartige besonders für einen werkzeuglosen Schnellanschluss geeignete Push-in-Kontakte sind an sich bekannt, so dass sie hier nicht näher beschrieben werden.The housing 5 also preferably serves to accommodate electrical or electronic components, in particular diodes. It also serves to connect the conductor 2 to the solar panel. For this purpose, connection devices 8 are arranged in the housing 5, which are formed in a preferred embodiment as terminals. The connection terminals may be, in particular, screw terminals or spring terminals, but they can also be designed in a different connection technology. Particular preference is given to using so-called compression spring clamps in direct plug-in technology (push-in), which are designed such that the inserted conductor 2 displaces a clamping spring during insertion, which presses the inserted conductor 2 against a busbar 3, so that a conductive contact is established. Such push-in contacts which are particularly suitable for a tool-free quick connection are known per se, so that they will not be described in more detail here.

Durch das Einschieben der Leiter 2 in die Anschlussvorrichtungen 8 und das Kontaktieren der Leiter 2 mit den Anschlussvorrichtungen 8 ist ein elektrischer Kontakt hergestellt. Dabei ist es notwendig, den Leiter 2 mit der Isolierung 3 durch die Gehäusedurchführung 4 zu führen und ihn in diesem Bereich zur Zugentlastung axial festzulegen. Besonders bevorzugt wird dabei eine abgedichtete Gehäusedurchführung 4 in relativ hoher Schutzart realisiert, damit das Gehäuse 5 an Solarpaneelen auch im Freien eingesetzt werden kann.By inserting the conductors 2 into the connection devices 8 and contacting the conductors 2 with the connection devices 8, an electrical contact is made. It is necessary to guide the conductor 2 with the insulation 3 through the housing bushing 4 and fix it axially in this area for strain relief. Particularly preferred is a sealed Implemented housing guide 4 in a relatively high degree of protection, so that the housing 5 can be used on solar panels in the open air.

Die Gehäusedurchführung 4 des Gehäuses 5 weist einen an dem Gehäuse 5 zu dessen Außenseite hin vorstehenden, vorzugsweise zumindest abschnittsweise innen zylindrischen Gehäuseansatz 9 mit einem Durchführkanal 10 für das Kabel 2 auf. Vorzugsweise auf dem Außenumfang des Gehäuseansatzes 9 sind (siehe auch Fig. 3) erste Rastmittel 11 ausgebildet, die zum Zusammenwirken mit noch zu erläuternden korrespondierenden Rastmitteln 12 eines Rastringes 13 ausgebildet sind. Vorzugsweise sind die Rastmittel 11 und 12 als Rasthaken ausgebildet, die zusammensteckbar miteinander verrastbar sind. Die Verrastung kann so ausgebildet werden, dass sie wieder zu öffnen ist (mehrmaliges Rasten) oder nicht wieder zu öffnen (einmaliges Rasten).The housing feedthrough 4 of the housing 5 has a housing extension 9 protruding on the housing 5 towards the outside thereof, preferably at least partially inside, with a passage channel 10 for the cable 2. Preferably on the outer circumference of the housing projection 9 are (see also Fig. 3 ) First locking means 11 are formed, which are designed to cooperate with yet to be explained corresponding locking means 12 of a locking ring 13. Preferably, the locking means 11 and 12 are formed as latching hooks which are plugged together latchable. The lock can be designed so that it can be opened again (repeated clicks) or not be reopened (one click).

Der Rastring 13 weist einen im Wesentlichen zylindrischen Ringansatz 14 auf, der dazu ausgelegt ist, in einen korrespondierenden ersten Innenabschnitt 15 des Gehäuseansatzes 9 eingesteckt zu werden. Der Rastring weist ferner einen ihn axial durchsetzenden Kabeldurchführkanal 25 und einen Flanschabschnitt 26 auf, welcher im montierten Zustand den Ansatz 9 am freien Ende weitgehend verschließt, wobei ihn das Kabel durchsetzt.The locking ring 13 has a substantially cylindrical annular projection 14, which is designed to be inserted into a corresponding first inner portion 15 of the housing projection 9. The locking ring also has an axially passing through cable duct 25 and a flange portion 26, which largely closes the neck 9 at the free end in the assembled state, wherein it passes through the cable.

Der Durchführkanal 10 ist als Gehäusewanddurchbruch ausgebildet. Er weist eine gestufte Kontur auf. nach außen hin ist der erste Innenabschnitt 15 größeren Innendurchmessers vorgesehen, an den sich ein zweiter Innenabschnitt 16 geringeren Innendurchmessers zum Gehäuseinneren hin anschließt, dessen Innenumfang in wesentlichen dem Außenumfang des anzuschließenden Kabels, hier des Leiters 2 mit der Isolierung 3, entspricht.The passage channel 10 is formed as a housing wall opening. He has a stepped contour. towards the outside, the first inner section 15 of larger inner diameter is provided, to which a second inner section 16 of smaller inner diameter adjoins the interior of the housing, whose inner circumference substantially corresponds to the outer circumference of the cable to be connected, here the conductor 2 with the insulation 3.

Der Innenabschnitt 15 weist dagegen einen Innendurchmesser auf, der dem Außendurchmesser des Ringansatzes 14 des Rastringes 13 entspricht, wobei der Innendurchmesser des Rastrings 13 dem Außendurchmesser des Kabels, d.h. des Leiters 2 mit der Isolierung 3 angepasst ist.The inner portion 15, however, has an inner diameter corresponding to the outer diameter of the annular shoulder 14 of the locking ring 13, wherein the inner diameter of the locking ring 13 is adapted to the outer diameter of the cable, ie the conductor 2 with the insulation 3.

Vorzugsweise wird zwischen dem zum Gehäuseinneren gewandten axialen Ende des Ringansatzes 14 des Rastringes 13 und der Stufung zwischen den Innenabschnitten 15 und 16 des Durchführkanals 10 ein Dichtelement angeordnet. Vorzugsweise wird dieses Dichtelement als Dichtring 17 ausgebildet.Preferably, between the interior of the housing facing axial end of the annular shoulder 14 of the locking ring 13 and the gradation between the inner portions 15 and 16 of the duct 10, a sealing element is arranged. Preferably, this sealing element is designed as a sealing ring 17.

Insbesondere wird als Dichtring ein O-Ring oder eine Formdichtung verwendet, der/die derart ausgestaltet ist, dass sein/der Querschnitt etwas größer ist als der radiale Abstand zwischen dem Außendurchmesser der Leiterisolierung 3 und dem Innenumfang des Innenabschnittes 15 des Durchführkanals 10. Auf die Dichtung kann auch verzichtet werden und eine Abdichtung über Presspassung erzielt werden. Das dichtet der Ring 13, der in das Gehäuse eingepresst wird, über Kunststoff ab (insbesondere bei geringeren Dichtigkeitsklassen).In particular, an O-ring or a molded seal is used as a sealing ring, which / is designed such that its / the cross section is slightly larger than the radial distance between the outer diameter of the conductor insulation 3 and the inner circumference of the inner portion 15 of the feedthrough channel 10. On the Seal can also be dispensed with and a seal can be achieved by press fitting. This seals the ring 13, which is pressed into the housing, on plastic (especially at lower tightness classes).

Derart wirkt der Dichtring radial abdichtend, wodurch eine hervorragende Dichtwirkung an der Gehäusedurchführung 4 realisiert wird.Thus, the sealing ring acts radially sealing, whereby an excellent sealing effect on the housing bushing 4 is realized.

Der Übergang zwischen den Innenabschnitten 15 und 16 kann konisch ausgebildet sein. Es ist ferner denkbar, dass sich an den inneren Innenabschnitt 16 des Durchführkanals 10 ein weiterer konischer Innenabschnitt 23 anschließt, der eine Art Einführtrichter für den Leiter 2 in die Anschlussvorrichtung 8 ausbildet.The transition between the inner portions 15 and 16 may be conical. It is also conceivable that the inner inner portion 16 of the duct 10, a further conical inner portion 23 connects, which forms a kind of insertion funnel for the conductor 2 in the connecting device 8.

Am äußeren axialen Ende kann der Durchführkanal ferner einen Bereich 27 nochmals größeren Durchmessers (ggf. mit einer mehreckigen Innenkontur) aufweisen, in den das flanschartige axiale Ende 26 des Rastringes 13 einführbar ist.At the outer axial end of the passage channel may further have a region 27 again larger diameter (possibly with a polygonal inner contour), in which the flange-like axial end 26 of the locking ring 13 can be inserted.

In diesem Zusammenhang ist anzumerken, dass das Leiterende bei einer Ausbildung der Anschlussvorrichtung 8 als Einsteckklemme an seinem freien Ende abisoliert wird.In this context, it should be noted that the conductor end is stripped at an embodiment of the connecting device 8 as a plug-in terminal at its free end.

Der Rastring 13 wird vor der Montage auf das freie Kabelende aufgeschoben (siehe Fig. 4) und in vorgegebener axialer Position am Kabelende unverschieblich fixiert.The locking ring 13 is pushed onto the free cable end before mounting (see Fig. 4 ) and immovably fixed in predetermined axial position at the cable end.

Diese Fixierung erfolgt mittels eines Fixierelementes 18. Das Fixierelement 18 kann als Gewindestift ausgebildet sein, der in eine sich axial erstreckende Gewindebohrung 19 im Ringansatz 14 des Rastringes 13 einschraubbar ist. Derart wird der Rastring 13 in einfacher Weise am Außendurchmesser des Kabels festgelegt.This fixation is effected by means of a fixing element 18. The fixing element 18 may be formed as a threaded pin which is screwed into an axially extending threaded bore 19 in the annular shoulder 14 of the locking ring 13. Thus, the locking ring 13 is set in a simple manner on the outer diameter of the cable.

Vorzugsweise ist der Gewindestift 18 derart bemessen, dass er beim Festlegen radial vollständig in die Gewindebohrung 19 einschraubbar ist, so dass sein radiales Ende nicht mehr aus der Gewindebohrung 19 vorsteht.Preferably, the threaded pin 18 is dimensioned such that it is completely screwed into the threaded hole 19 when setting radially so that its radial end no longer protrudes from the threaded hole 19.

Im Bereich der Gewindebohrung 19 kann der Ringansatz 14 ferner mit einem radialen Vorsprung 20 versehen sein. Dieser radiale Vorsprung 20 ist dazu ausgelegt, in eine entsprechende Aufnahmetasche 21 im Durchführkanal 10 eingeschoben zu werden. Damit ist sichergestellt, dass sich nach der Montage der Gewindestift 18 nicht radial aus der Gewindebohrung ausdrehen kann.In the region of the threaded bore 19, the annular shoulder 14 may also be provided with a radial projection 20. This radial projection 20 is designed to be inserted into a corresponding receiving pocket 21 in the feed-through channel 10. This ensures that after assembly of the threaded pin 18 can not rotate radially out of the threaded hole.

Die Rasthaken 12 am Rastring 13 sind an einem oder mehreren, vorzugsweise an zwei Raststegen 22 ausgebildet, die sich radial außerhalb des Außenumfang des Ringansatzes 14 parallel zu diesem erstrecken, wobei die Stege 22 radial zum Ringansatz 14 beabstandet angeordnet sind, damit sie den Gehäuseansatz 9 des Außenumfangs übergreifen können. Die Rasthaken 11 am Außenumfang des Gehäuseansatzes 9 sind vorzugsweise in sich radial erstreckenden Aufnahmeführungen 24 für die Rastarme 22 angeordnet, die sich weiter vorzugsweise wie die Rastarme diametral gegenüberliegen.The latching hooks 12 on the latching ring 13 are formed on one or more, preferably two latching webs 22 which extend radially outside of the outer periphery of the annular shoulder 14 parallel thereto, wherein the webs 22 are arranged radially spaced from the annular shoulder 14 so that they the housing extension. 9 of the outer circumference can overlap. The latching hooks 11 on the outer circumference of the housing projection 9 are preferably arranged in radially extending receiving guides 24 for the latching arms 22, which are further preferably diametrically opposed as the latching arms.

Zur Montage wird zunächst der Rastring 13 auf das freie Kabelende aufgeschoben, das gegebenenfalls zuvor oder danach abisoliert wird.For mounting, the locking ring 13 is first pushed onto the free cable end, which is optionally stripped of insulation before or after.

Der Rastring 13 wird ferner mit dem Fixierelement 18, vorzugsweise mit dem Gewindestift, in der Bohrung 19 in der geeigneten Position festgelegt. Zuvor oder sodann wird der Dichtring 17 auf den Ringansatz 14 aufgeschoben geschoben und die vormontierte Einheit wird in axialer Richtung in das Gehäuse 5 geführt, wobei der Leiter 2 in den Durchführkanal 10 gelangt.The locking ring 13 is further fixed with the fixing element 18, preferably with the threaded pin, in the bore 19 in the appropriate position. Before or then the sealing ring 17 is pushed pushed onto the annular shoulder 14 and the preassembled unit is guided in the axial direction in the housing 5, wherein the conductor 2 passes into the passage channel 10.

Das Einschieben des Kabels mit dem Leiter 2 und der Leiterisolierung 3 in den Ringansatz 14 erfolgt, bis die Rasthaken 12 hinter die Rasthaken 11 des Ringansatzes 14 schnappen. In diesem Zustand ist das Kabel abgedichtet am Gehäusedeckel festgelegt. Sodann wird der Gehäusedeckel auf das Gehäuseunterteil aufgesetzt. Wie in Fig. 5 zu erkennen, kann dabei das Gehäuseunterteil 6 derart ausgestaltet sein, dass es (vorzugsweise mit einem Steg 28) den einen Rasthaken 12 (in Fig. 5 den unteren Rasthaken) abdeckt bzw. vorteilhaft derart sichert, dass er sich nicht mehr aus der Verrastung am korrespondierenden Rasthaken 11 am Gehäuse 5 (hier am Gehäuseoberteil 7) lösen kann.The insertion of the cable with the conductor 2 and the conductor insulation 3 in the annular shoulder 14 takes place until the latching hooks 12 snap behind the locking hooks 11 of the annular shoulder 14. In this condition, the cable is sealed to the housing cover. Then the housing cover is placed on the housing lower part. As in Fig. 5 can recognize, the lower housing part 6 may be configured such that it (preferably with a web 28) a latching hook 12 (in Fig. 5 the lower latching hooks) covers or advantageously ensures such that it can no longer be released from the latching on the corresponding latching hook 11 on the housing 5 (here on the housing upper part 7).

Während die Rasthaken nach den beiliegenden Figuren radial nach innen an die Rastarme 22 angeordnet sind, können sie nach alternativen Ausführungen auch anders ausgerichtet sei. So könnten die Rasthaken nach außen zeigen oder aber es würden Rastspangen realisiert, d.h. ein geteilter Rastarm, wobei an den Rastarmenden zwei voneinander weg gerichtete Rasthakenanordnungen vorgesehen sind (hier nicht dargestellt).While the latching hooks are arranged according to the accompanying figures radially inwardly to the latching arms 22, they can also be oriented differently according to alternative embodiments. Thus, the latching hooks could point outwards or else latching clips would be realized, i. a split latching arm, wherein on the Rastarmenden two mutually directed away latch hook arrangements are provided (not shown here).

Fig. 6 zeigt, dass am Innenumfang des Kabeldurchführkanals 25 des Rastrings 13 vorteilhaft wenigstens ein oder mehrere Axialstege 29 und/oder wenigstens ein oder mehrere Umfangsstege 30 ausgebildet sein können. Dies hat einerseits den Vorteil, dass sich das Material der Isolierung des Kabels beim Anziehen des Gewindestiftes 18 in den Raum zwischen den Axialstegen 29 drückt, so dass der Rastring 13 und das Kabel relativ zueinander in einfacher Weise auch gegen ein Relativverdrehen gesichert werden und bietet andererseits den Vorteil, dass der Umfangssteg 30 das Kabel zusätzlich gegen axiale Relativbewegungen zugentlastend sichert. Fig. 6 shows that at least one or more axial webs 29 and / or at least one or more circumferential webs 30 may be advantageously formed on the inner circumference of the cable duct 25 of the locking ring 13. This on the one hand has the advantage that the material of the insulation of the cable presses when tightening the threaded pin 18 in the space between the axial webs 29, so that the locking ring 13 and the cable are secured relative to each other in a simple manner against relative rotation and offers the other the advantage that the peripheral ridge 30 additionally secures the cable against relative axial movements relieving strain.

Anzumerken ist schließlich, dass zwei vorzugsweise einander diametral gegenüberliegende Radialbohrungen 19 und Ansätze 20 im/am Rastring 13 den Vorteil mit sich bringen, dass die Festlegung des Gewindestiftes 18 jeweils aus der einfachst zugänglichen Montagelage erfolgen kann. Zudem wird die Isolierung des Kabels fixierend in die jeweils gegenüberliegende und leer bleibende Gewindebohrung 19 gepresst.It should finally be noted that two preferably diametrically opposed radial bores 19 and lugs 20 in / on the locking ring 13 bring the advantage that the determination of the threaded pin 18 can be made in each case from the easiest accessible mounting position. In addition, the insulation of the cable is pressed into the respective opposite and remaining empty threaded hole 19.

Die Rasthaken müssen zudem erfindungsgemäß nicht zwingend unter Vorspannung stehen, damit eine radiale Abdichtung erzielt wird, was sich vorteilhaft auf die Lebensdauer auswirkt.Moreover, according to the invention, the catch hooks do not necessarily have to be prestressed so that a radial seal is achieved, which has an advantageous effect on the service life.

Die Dichtwirkung im Bereich des Dichtringes 17 kann ggf. durch eine labyrinthartige Ausgestaltung der an den Dichtring angrenzenden Bereiche noch erhöht werden. Bezugszeichen Fixiervorrichtung 1 Leiter 2 Isolierung 3 Gehäusedurchführung 4 Gehäuse 5 Unterteil 6 Deckelteil 7 Anschlussvorrichtung 8 Gehäuseansatz 9 Durchführkanal 10 Rastmittel 11, 12 Rastring 13 Ringansatz 14 Innenabschnitte 15, 16 Dichtring 27 Fixierelement 18 Gewindebohrung 19 Vorsprung 20 Aufnahmetasche 21 Raststeg 22 Konischer Innenabschnitt 23 Aufnahmeführungen 24 Kabeldurchführkanal 25 Flanschabschnitt 26 Bereich 27 Steg 28 Axialstege 29 Radialsteg 30 The sealing effect in the region of the sealing ring 17 can possibly be further increased by a labyrinth-like configuration of the regions adjacent to the sealing ring. <U> reference numerals </ u> fixing 1 ladder 2 insulation 3 Housing bushing 4 casing 5 lower part 6 cover part 7 connection device 8th housing extension 9 Through channel 10 latching means 11, 12 locking ring 13 annular shoulder 14 interior sections 15, 16 seal 27 fixing 18 threaded hole 19 head Start 20 receiving pocket 21 latching web 22 Conical interior section 23 receptacle guides 24 Cable duct 25 flange 26 Area 27 web 28 axial webs 29 radial web 30

Claims (9)

  1. Fixing device for cables which have at least one conductor (2) which is provided with at least one insulation (3), on a housing feed-through (4) of a housing (5), wherein
    a. the fixation device (1) has a locking ring (13) with a cable feed-through channel, which locking ring can be fixed axially on the outer circumference of the cable,
    b. the locking ring (13) is fixed in a locking manner on the housing (5), wherein, to fix the cable in a locking manner on the housing feed-through, corresponding locking means (11, 12) are formed on the locking ring (13) and on the housing (5),
    c. the housing (5) has a feed-through channel (10), which is designed to feed the cable through same, and to receive a ring attachment (14) of the locking ring (13), and that the housing (5) has a housing attachment (9) which is provided with a feed-through channel (10),
    d. the locking ring (13) is provided with at least one fixing element (18) for the axial attachment of the locking ring (13) on the outer circumference of the cable,
    e. the feed-through channel (10) of the housing (5) has a stepped design
    characterized in that
    f. the feed-through channel (10) of the housing (5), towards the housing interior, has a section (16) whose inner circumference corresponds to the outer circumference of the cable, and it has a section (15) of larger diameter, whose inner diameter corresponds to the outer diameter of the ring attachment (14) of the locking ring (13), and
    g. as the corresponding locking means on the locking ring (13) and on the housing (5), the locking hooks (12) of the locking ring (13) are formed on locking arms (22) and that the locking hooks (12) are designed so that they engage behind corresponding locking hooks (11), on the outer circumference of a ring attachment, with the feed-through channel (10) in a locking manner.
  2. Fixing device according to claim 1, characterized in that the fixing element is a threaded pin (18) which can be screwed into a radial threaded bore (19) of the locking ring.
  3. Fixing device according to claim 2, characterized in that the threaded pin (18) is dimensioned in such a way that it can be screwed completely into the threaded bore (19), without protruding radially outwards from the threaded bore (19).
  4. Fixing device according to one of the previous claims, characterized in that the threaded bore (19) is formed in a radial projection (20) of the ring attachment (14), where the latter is designed in such a way that it can be shifted into a corresponding reception pocket (21) of the housing attachment (9), providing thus protection against loss of the fixing element (18).
  5. Fixing device according to one of the previous claims, characterized in that a sealing element (17) is arranged between the free end of the ring attachment (14) of the locking ring (13), and the stepping between the sections (15 and 16) of different diameter of the feed-through channel (10).
  6. Fixing device according to one of the previous claims, characterized in that the sealing element (17) is designed as a sealing ring, particularly an O ring, which is preferably arranged under radial preliminary tension in the ring space between the ring attachment (14) of locking ring and the inner section (15) of larger diameter of the feed-through channel (10).
  7. Fixing device according to one of the previous claims, characterized in that, in the housing (5), a fixing device (8) for the connection of the conductor end or of a contact on the conductor end is formed, which is designed preferably as a spring clamp or as a direct plug-in spring clamp (push-in).
  8. Fixing device according to one of the previous claims, characterized in that the housing is a connection box for connecting conductor ends to a solar panel.
  9. Fixing device according to one of the previous claims, characterized in that, on the inner circumference of the cable feed-through channel (25) of the locking ring (13), at least one or more axial ledges (29) and/or at least one or more peripheral ledges (30) are formed.
EP10700978.9A 2009-01-23 2010-01-12 Fixing device for fixing a cable at a housing feed-through Active EP2382693B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009000899U DE202009000899U1 (en) 2009-01-23 2009-01-23 Fixing device for fixing a cable to a housing feedthrough
PCT/EP2010/050291 WO2010084056A1 (en) 2009-01-23 2010-01-12 Fixing device for fixing a cable at a housing feed-through

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EP2382693A1 EP2382693A1 (en) 2011-11-02
EP2382693B1 true EP2382693B1 (en) 2019-07-10

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US (1) US8556649B2 (en)
EP (1) EP2382693B1 (en)
CN (1) CN102273019B (en)
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WO (1) WO2010084056A1 (en)

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Also Published As

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EP2382693A1 (en) 2011-11-02
US8556649B2 (en) 2013-10-15
CN102273019A (en) 2011-12-07
CN102273019B (en) 2014-08-06
US20110315442A1 (en) 2011-12-29
WO2010084056A1 (en) 2010-07-29
DE202009000899U1 (en) 2010-06-17

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