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DE202006007170U1 - Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled - Google Patents

Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled Download PDF

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Publication number
DE202006007170U1
DE202006007170U1 DE200620007170 DE202006007170U DE202006007170U1 DE 202006007170 U1 DE202006007170 U1 DE 202006007170U1 DE 200620007170 DE200620007170 DE 200620007170 DE 202006007170 U DE202006007170 U DE 202006007170U DE 202006007170 U1 DE202006007170 U1 DE 202006007170U1
Authority
DE
Germany
Prior art keywords
strain relief
cable
pulled
bush
metal clip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE200620007170
Other languages
German (de)
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.)
Eltherm Production GmbH
Original Assignee
ELTHERM ELEKTROWAERMETECHNIK GmbH
Eltherm Elektrowaermetechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ELTHERM ELEKTROWAERMETECHNIK GmbH, Eltherm Elektrowaermetechnik GmbH filed Critical ELTHERM ELEKTROWAERMETECHNIK GmbH
Priority to DE200620007170 priority Critical patent/DE202006007170U1/en
Publication of DE202006007170U1 publication Critical patent/DE202006007170U1/en
Priority to PCT/EP2007/002783 priority patent/WO2007124823A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • 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
    • H01R13/5808—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 formed by a metallic element crimped around the cable
    • 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
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

The electrical flat heating cable passes into a housing through a sealing bush. Inset into the bush is a pressed metal clip [1] that is formed with a pair of lugs [2] that have a spring action and grip the cable insulation to resist axial pulling. The clip has side lugs [3] that provide location.

Description

An Leitungseinführungen für explosionsgefährdete Bereiche sind hohe Anforderungen hinsichtlich einer Zugentlastung der eingeführten Leitungen gestellt. Üblicherweise reichen bei flachen Heizleitungen die reinen Reibungskräfte, die zwischen Heizleitungsoberfläche und der in der Leitungseinführung integrierten Dichtung auftreten, hierfür nicht aus. Abgesehen von vergossenen Leitungseinführungen werden daher bislang Leitungseinführungen verwendet, die ein zusätzliches Druck- oder Verkrallungselement aufweisen, welches direkt oder indirekt auf die Heizleitung wirkt. Die bislang bekannten Elemente werden jedoch erst wirksam, wenn durch die Leitungseinführung oder Bestandteile derselben entsprechende Kräfte auf sie ausgeübt werden. Bei nicht korrektem oder unvollständigem Zusammenbau der Leitungseinführung ist daher bei diesen Systemen die geforderte Zugentlastungswirkung nicht gegeben. Erfahrungsgemäß werden die bisher bekannten Systeme in der Praxis sogar häufig demontiert um ein leichteres Einführen der Heizleitung zu ermöglichen, bei entsprechend höherem Risiko eines fehlerhaften Zusammenbaus.At cable entries for potentially explosive areas high demands are made with regard to a strain relief of the inserted lines. Usually For flat heating cables, the pure frictional forces are sufficient between heating pipe surface and the integrated in the cable entry Seal occur for this not from. Beyond potted cable entries so far cable entries used that an additional Have pressure or Verkrallungselement which directly or indirectly acts on the heating cable. The hitherto known elements become However, only effective when through the cable entry or components thereof corresponding forces exercised on them become. In case of incorrect or incomplete assembly of the cable entry is Therefore, in these systems, the required strain relief effect not given. According to experience the previously known systems in practice even often dismantled for easier insertion to allow the heating cable at correspondingly higher Risk of incorrect assembly.

Die unter Schutzanspruch 1 angegebene Erfindung verkürzt die Dauer für den Zusammenbau der Leitungseinführung, da die zugentlastende Wirkung unabhängig von deren Bestandteilen gegeben ist. Gleichzeitig wird hierdurch das Risiko eines fehlerhaften Zusammenbaus der Leitungseinführung reduziert. Durch die metallische Ausführung sind über einen breiten Temperaturbereich hinweg gleichbleibende mechanische Eigenschaften der Zugentlastung sichergestellt.The under protection claim 1 invention shortens the duration for the assembly of Cable entry, because the strain-relieving effect, regardless of their components given is. At the same time thereby the risk of a faulty Assembly of the cable entry reduced. Due to the metallic design are over a wide temperature range constant mechanical properties of the strain relief ensured.

Die Weiterentwicklung nach Schutzanspruch 2 bewirkt dass die Zugentlastung durch Anformung geeigneter Rastnasen so in die vorgesehene Leitungseinführung eingebracht werden kann dass sie nicht infolge Schwerkraft oder transportbedingter Erschütterungen aus der – ggf. auch teilweise zerlegten Leitungseinführung – aus derselben entfernt wird. Diese Weiterentwicklung ermöglicht zudem eine Anordnung der Zugentlastung auf der von der Zugrichtung abgewandten Seite der Dichtung der vorgesehenen Leitungseinführung. Die Berührungsstelle zwischen Heizleitung und Zugentlastung liegt dann innerhalb der Leitungseinführung, wodurch ein Scheuern der Heizleitung an den Zungen der Zugentlastung infolge Biegebeanspruchung oder seitlicher Bewegungen verhindert wird.The Further development according to protection claim 2 causes that the strain relief introduced by molding suitable locking lugs so in the intended cable entry they can not be due to gravity or transportation shocks from the - if necessary also partially disassembled cable entry - is removed from the same. These Further development possible In addition, an arrangement of the strain relief on the of the pulling direction opposite side of the seal of the planned cable entry. The contact point between heating cable and strain relief is then within the Cable entry, causing a chafing of the heating cable to the tongues of the strain relief Bending or lateral movement is prevented.

Ein Ausführungsbeispiel für eine Zugentlastung nach Schutzanspruch 2 ist anhand der a dargestellt. An die Zugentlastung (1) sind federnde Zungen (2) angeformt, welche den Durchtritt der Heizleitung in einer Richtung ermöglichen. Ebenfalls angeformte Verankerungsnasen (3) bewirken die unverlierbare Verankerung der Zugentlastung (1) in der gewählten Leitungseinführung (4, 5).An embodiment of a strain relief protection claim 2 is based on a shown. To the strain relief ( 1 ) are resilient tongues ( 2 ), which allow the passage of the heating cable in one direction. Also molded anchoring lugs ( 3 ) cause the captive anchoring of the strain relief ( 1 ) in the selected cable entry ( 4 . 5 ).

b zeigt den Einbau der Zugentlastung (1) in eine Leitungseinführung mit in Zugrichtung angebrachtem Widerlager (4) für die Dichtung (6), welche wiederum die von der eingeführten Heizleitung (7) auf die Zugentlastung (1) übertragene Kraft aufnimmt, so dass innerhalb des Anschlussraumes (8) keine Zugkräfte auf die Heizleitung (7) einwirken. b shows the installation of the strain relief ( 1 ) in a cable entry with attached in the pulling direction abutment ( 4 ) for the seal ( 6 ), which in turn replace the heating cable ( 7 ) on the strain relief ( 1 ) transmits transmitted force, so that within the connection space ( 8th ) no tensile forces on the heating cable ( 7 ).

In c ist eine weitere Variante für den Einbau der Zugentlastung (1) dargestellt. Die von der eingeführten Heizleitung (7) auf die Zugentlastung (1) übertragene Kraft wird hierbei direkt mittels der angeformten Verankerungsnasen (3) in die Wandung einer Leitungseinführung ohne Widerlager (5) eingeleitet, mit dem bereits für b beschriebenen Resultat.In c is another variant for the installation of the strain relief ( 1 ). The of the imported heating cable ( 7 ) on the strain relief ( 1 ) transmitted force is in this case directly by means of the molded anchoring lugs ( 3 ) in the wall of a cable entry without abutment ( 5 ), with which already for b described result.

Claims (2)

Zugentlastung für flache Heizleitungen zum Einsatz in Leitungseinführungen für explosionsgefährdete Bereiche dadurch gekennzeichnet, daß die Zugentlastung aus einem für die zu erwartenden Heizleitungstemperaturen (max. etwa 300°C) geeigneten plattenförmigen metallischen Werkstoff gefertigt werden und die zugentlastende Wirkung durch zwei angeformte federnde Zungen erreicht wird, die trichterförmig so angeordnet sind, dass ihre Vorderkanten parallel zueinander stehen und der lichte Abstand zwischen den Vorderkanten kleiner ist als die Heizleitungsdicke, so dass bei eingeführter Heizleitung die Vorderkanten der federnden Zungen an der Heizleitungsoberfläche anliegen ohne dass Bestandteile der vorgesehenen Leitungseinführung hierzu Druck auf diese Zungen ausüben müssen.Strain relief for flat heating cables for use in cable entries for hazardous areas characterized in that the strain relief from a suitable for the expected Heizleitungstemperaturen (max about 300 ° C) plate-shaped metallic material are manufactured and the zugentlastende effect is achieved by two molded resilient tongues, the funnel-shaped are arranged so that their leading edges are parallel to each other and the clear distance between the leading edges is smaller than the Heizleitungsdicke, so that when inserted heating line, the leading edges of the resilient tongues rest against the Heizleitungsoberfläche without components of the planned cable entry for this pressure on these tongues have to exercise. Zugentlastung nach Schutzanspruch 1, dadurch gekennzeichnet, daß am äußeren Rand der Zugentlastung federnde Rastnasen für eine kraft- und/oder formschlüssige Verbindung zur vorgesehenen Leitungseinführung angeordnet sind.Strain relief according to protection claim 1, characterized that on the outer edge the strain relief spring latching lugs for a positive and / or positive connection for the planned cable entry are arranged.
DE200620007170 2006-05-03 2006-05-03 Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled Expired - Lifetime DE202006007170U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200620007170 DE202006007170U1 (en) 2006-05-03 2006-05-03 Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled
PCT/EP2007/002783 WO2007124823A1 (en) 2006-05-03 2007-03-29 Strain relief device for flat heating lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620007170 DE202006007170U1 (en) 2006-05-03 2006-05-03 Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled

Publications (1)

Publication Number Publication Date
DE202006007170U1 true DE202006007170U1 (en) 2006-10-12

Family

ID=37295792

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200620007170 Expired - Lifetime DE202006007170U1 (en) 2006-05-03 2006-05-03 Spring metal clip is inserted in a housing cable bush to provide resistance against axial loads when flat cable is pulled

Country Status (2)

Country Link
DE (1) DE202006007170U1 (en)
WO (1) WO2007124823A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049563B3 (en) * 2006-10-20 2008-04-17 Tyco Electronics Amp Gmbh Connector with improved cable strain relief
DE102010042341B3 (en) * 2010-10-12 2012-04-05 Intercontec Pfeiffer Gmbh Plug part for an electrical connector and method for mounting a plug part
EP2560258A3 (en) * 2011-08-17 2014-10-29 Johnson Electric S.A. Fluid-tight cable bushing for ribbon cable

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249023B (en) * 1965-07-05 1967-08-31 Dynamit Nobel Aktiengesellschaft, Troisdorf (Bez Köln) FIRE BARRIER ON WALL PIPES MADE OF THERMOPLASTIC PLASTIC
FR2783590B1 (en) * 1998-09-22 2000-10-27 Comap Sa INSTANTANEOUS CONNECTION FOR PIPE
JP3430396B2 (en) * 1998-11-12 2003-07-28 東拓工業株式会社 Bellmouth with joint, its block body and handhole
GB9905994D0 (en) * 1999-03-17 1999-05-12 Delta Capillary Prod Ltd A push fit attachment
FI112275B (en) * 2000-02-24 2003-11-14 Uponor Innovation Ab A pipe joint
US20050034407A1 (en) * 2003-07-28 2005-02-17 Snyder Darryl L. Support frame for duct

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049563B3 (en) * 2006-10-20 2008-04-17 Tyco Electronics Amp Gmbh Connector with improved cable strain relief
US7578695B2 (en) 2006-10-20 2009-08-25 Tyco Electronics Amp Gmbh Plug connector with improved cable strain relief
DE102010042341B3 (en) * 2010-10-12 2012-04-05 Intercontec Pfeiffer Gmbh Plug part for an electrical connector and method for mounting a plug part
EP2560258A3 (en) * 2011-08-17 2014-10-29 Johnson Electric S.A. Fluid-tight cable bushing for ribbon cable

Also Published As

Publication number Publication date
WO2007124823A1 (en) 2007-11-08

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20061116

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 20090807

R081 Change of applicant/patentee

Owner name: ELTHERM PRODUCTION GMBH, DE

Free format text: FORMER OWNER: ELTHERM ELEKTROWAERMETECHNIK GMBH, 57299 BURBACH, DE

Effective date: 20100222

R082 Change of representative

Representative=s name: PATENTANWAELTE GESTHUYSEN, VON ROHR & EGGERT, DE

Representative=s name: PATENTANWAELTE GESTHUYSEN, VON ROHR & EGGERT, 4512

R081 Change of applicant/patentee

Owner name: ELTHERM PRODUCTION GMBH, DE

Free format text: FORMER OWNER: ELTHERM GMBH, 57299 BURBACH, DE

Effective date: 20120410

R082 Change of representative

Representative=s name: VON ROHR PATENTANWAELTE PARTNERSCHAFT MBB, DE

Effective date: 20120410

Representative=s name: PATENTANWAELTE GESTHUYSEN, VON ROHR & EGGERT, DE

Effective date: 20120410

R151 Utility model maintained after payment of second maintenance fee after six years
R151 Utility model maintained after payment of second maintenance fee after six years

Effective date: 20120601

R082 Change of representative

Representative=s name: VON ROHR PATENTANWAELTE PARTNERSCHAFT MBB, DE

R158 Lapse of ip right after 8 years
R158 Lapse of ip right after 8 years

Effective date: 20141202