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EP2523265B1 - Strain relief/bend prevention device - Google Patents

Strain relief/bend prevention device Download PDF

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Publication number
EP2523265B1
EP2523265B1 EP11003937.7A EP11003937A EP2523265B1 EP 2523265 B1 EP2523265 B1 EP 2523265B1 EP 11003937 A EP11003937 A EP 11003937A EP 2523265 B1 EP2523265 B1 EP 2523265B1
Authority
EP
European Patent Office
Prior art keywords
cable
cross
sleeve portion
sectional area
section
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
EP11003937.7A
Other languages
German (de)
French (fr)
Other versions
EP2523265A1 (en
Inventor
Martin Ludwig
Necdet Papurcu
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP11003937.7A priority Critical patent/EP2523265B1/en
Priority to PCT/EP2012/055781 priority patent/WO2012152505A1/en
Priority to US14/117,075 priority patent/US9172177B2/en
Priority to CN201280022623.8A priority patent/CN103620883B/en
Publication of EP2523265A1 publication Critical patent/EP2523265A1/en
Application granted granted Critical
Publication of EP2523265B1 publication Critical patent/EP2523265B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R13/58—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
    • H01R13/5841—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 allowing different orientations of the cable with respect to the coupling direction
    • 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
    • H01R13/5845—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 the strain relief being achieved by molding parts around cable and connections

Definitions

  • the invention relates to a strain relief / bending protection device for a cable connected to a connector, in particular a high speed cable comprising a base portion attachable to a housing of the connector and a spout portion extending from the base portion for enclosing the cable in an area external of the housing.
  • the spout portion has a cylindrical shape and rigidity so high that the portion of the cable enclosed by the spout portion can not move substantially relative to the connector housing under normally occurring forces. This means that the cable always bends in the same area when it is deflected relative to the connector housing, namely just outside the sleeve section, which increases the risk of cable breakage.
  • the invention has for its object to provide a strain relief / bending protection device that can be produced with minimal economic effort and thereby provides optimal protection against cable breakage.
  • the object is achieved by a Buchentlastungs- / Biegetikvorraum with the features of claim 1 and in particular in that the Tüllenabites is angled relative to the base portion and the Switzerlandentlastungs- / Biegetikvortechnische is made by an injection molding process.
  • the tapering of the Tüllenabitess invention in the direction of its base portion facing away from the free end gives the Tüllenabrough increasing in the direction of its free end elasticity, so that the Tüllenabrough with appropriate dimensioning, ie with appropriate wall thickness or a corresponding decrease in the wall thickness towards the free end, even with the exercise of lower deflection forces on the cable can bend together with the cable.
  • the bending point of the cable moves with increasing deflection force due to the increasing in the direction of the base portion cross-sectional area of Tüllenabites towards the base portion, ie there is no fixed, but rather a wandering bending point, whereby the risk of cable breakage is significantly reduced.
  • the spout portion has a round cross-section, i. it has no edges, which would lead to increased rigidity of the Tüllenabitess in certain deflection directions.
  • the round cross section of the spout portion in all directions transverse to the cable direction achieves optimum elasticity of the spout portion, i. the device according to the invention has no preferred directions in which a better protection is achieved, but it is an optimal protection against cable break at deflections of the cable in any direction across the cable direction guaranteed.
  • the spout portion Due to its round cross section, the spout portion also has a particularly simple geometric shape, which can be easily realized, for example by means of an injection molding process, whereby the device according to the invention can be produced with minimal economic effort.
  • the cable does not necessarily have to be an electrical cable, such as a high-speed cable for data transmission. Rather, the device according to the invention also in conjunction with an optical cable, such as fiber optic cable, are used.
  • the spout portion has no cuts or recesses. This contributes to a simpler geometric shape and thus ultimately more cost-effective manufacturability of the device.
  • an injection mold intended for the manufacture of the device need not be provided with additional means for introducing cuts or recesses, e.g. Sliders to be equipped, i. a simpler injection mold can be used.
  • the cross-sectional area of the spout portion decreases continuously, i. the spout portion may have a frusto-conical shape.
  • the cross-sectional area of the spout portion gradually decreases, thereby forming a plurality of discrete portions.
  • the lengths of the sections ie their dimensions seen in the cable direction, all be the same.
  • the lengths of at least two subsections are different.
  • the device is produced by means of an injection molding process.
  • the cross-sectional area of the grommet section steadily decreases between two sections, i. If the transition between two sections is not abrupt, but for example, is formed by an inclined surface or conical surface, as this can prevent the formation of undercuts during injection molding.
  • the cross section of the sleeve section is also circular, since in this case optimal bending protection results in all directions transversely to the cable direction.
  • the cross section of the Tüllenabitess oval or elliptical for example, if the cable consists of two side by side extending round cables or the cable has a generally flattened cross-section.
  • Fig. 1 shows a first embodiment of a Switzerlandentlastungs- / Biegeschutzvorraum 10, which is provided to protect a cable 12, in the present embodiment, a high-speed cable with a substantially circular cross-section.
  • the cable 12 is connected to a connector 14, which has a housing 16.
  • a plug contact 20 shows, in the present embodiment, a USB or LVDS connector.
  • the coincident with the plug-in direction of the plug-in contact 20 central axis of the plug-in contact 20 defines a main axis of the connector 14th
  • the strain relief / bending protection device 10 is fixedly mounted on a rear side 22 of the housing 16 opposite the front side 18.
  • the strain relief / bending protection device 10 may be molded, glued or welded to the housing 16.
  • the strain relief / bending protection device 10 is an integrally formed plastic component produced by an injection molding process.
  • the strain relief / bending protection device 10 comprises a base portion 24 which is in contact with the housing 16, and a spout portion 26 which emerges from the base portion 24 and encloses a portion of the cable 12 extending outside the housing 16 over a certain length.
  • the spout portion 26 extends at right angles to the major axis of the connector 14, ie the cable 12 is inserted into the housing 16 at an angle of 90 °.
  • the Tüllenabêt 26 is tilted by about 45 ° relative to a plane defined by the plug contact 20 level.
  • the grommet portion 26 need not necessarily extend at right angles to the main axis of the connector 14, but depending on the application, other angles with the main axis of the connector 14 may form. So shows Fig. 2 For example, an embodiment wherein the spout portion 26 is at an angle of about 45 ° to the major axis of the connector 14 extends. In principle, it is also possible not to bend the grommet portion 26 at all, that is, to form such that it extends coaxially with the main axis of the plug connector 14.
  • the spout portion 26 has a circular, circular in the illustrated embodiment, cross section and tapers in the direction of its base portion 24 facing away from the free end 28, i. the cross-sectional area of the spout portion 26 becomes smaller as the distance from the base portion 24 increases. Due to the circular shape of the cross section of the spout portion 26, the decrease in the cross-sectional area of the spout portion in the illustrated embodiment is equivalent to a decrease in the diameter or wall thickness of the spout portion 26.
  • the Tüllenabites 26 has no continuously decreasing cross-sectional surface shape, ie no truncated cone shape, which would be quite possible, but the cross-sectional area gradually decreases in the illustrated embodiment.
  • the illustrated embodiment has two stages, ie, the spout portion 26 is composed of three substantially hollow cylindrical sections 30 of different wall thickness, each further removed from the base portion 24 section 30 has a smaller wall thickness than the previous section 30.
  • the transition from one section 30 to the next does not take place abruptly, but via an intermediate section 32, which has a sloping surface and thus effectively forms a truncated cone segment.
  • a strain relief / bending protection device 10 differs from the in Fig. 1 shown and described above embodiment only in that the spout portion 26 extends not at right angles but at an angle of approximately 45 ° to the main axis of the connector 14. Moreover, the sections 30 of the spout portion 26 of the second embodiment have slightly different dimensions than those of the first embodiment.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Die Erfindung betrifft eine Zugentlastungs-/Biegeschutzvorrichtung für ein mit einem Steckverbinder verbundenes Kabel, insbesondere ein Hochgeschwindigkeitskabel, welche einen an einem Gehäuse des Steckverbinders befestigbaren Basisabschnitt und einen aus dem Basisabschnitt hervorgehenden Tüllenabschnitt zur Umschließung des Kabels in einem außerhalb des Gehäuses gelegenen Bereich umfasst.The invention relates to a strain relief / bending protection device for a cable connected to a connector, in particular a high speed cable comprising a base portion attachable to a housing of the connector and a spout portion extending from the base portion for enclosing the cable in an area external of the housing.

Derartige Zugentlastungs-/Biegeschutzvorrichtungen sind grundsätzlich bekannt und sollen eine Beschädigung des Kabels im Übergangsbereich zum Steckverbindergehäuse verhindern.Such Zugentlastungs- / Biegeschutzvorrichtungen are basically known and are intended to prevent damage to the cable in the transition region to the connector housing.

Bei einer bekannten Zugentlastungs-/Biegeschutzvorrichtung weist der Tüllenabschnitt eine zylindrische Gestalt und eine so hohe Steifigkeit auf, dass sich der von dem Tüllenabschnitt umschlossene Abschnitt des Kabels unter normalerweise auftretenden Kräften zumindest nicht wesentlich relativ zu dem Steckverbindergehäuse bewegen kann. Dies bedeutet, dass sich das Kabel bei einer Auslenkung relativ zu dem Steckverbindergehäuse stets im gleichen Bereich verbiegt, nämlich unmittelbar außerhalb des Tüllenabschnitts, wodurch ein erhöhtes Risiko eines Kabelbruchs besteht.In a known strain relief / bending protection device, the spout portion has a cylindrical shape and rigidity so high that the portion of the cable enclosed by the spout portion can not move substantially relative to the connector housing under normally occurring forces. This means that the cable always bends in the same area when it is deflected relative to the connector housing, namely just outside the sleeve section, which increases the risk of cable breakage.

Zur Schaffung einer gewissen Elastizität des Tüllenabschnitts ist es bekannt, quer zur Kabelrichtung orientierte Einschnitte in den Tüllenabschnitt einzubringen, wobei die Einschnitte auf gegenüberliegenden Seiten des Tüllenabschnitts oder umlaufend ausgebildet sein können. Aufgrund der Einschnitte ist die Herstellung derartiger Zugentlastungs-/Biegeschutzvorrichtungen jedoch mit einem erhöhten wirtschaftlichen Aufwand verbunden. Werden die Vorrichtungen beispielsweise mittels eines Spritzgussverfahrens hergestellt, erfolgt das Einbringen der Einschnitte in den Tüllenabschnitt üblicherweise mit Hilfe von Schiebern, welche in die zur Herstellung der Vorrichtung verwendete Spritzgussform eingeschoben werden müssen, d.h. die Spritzgussform weist einen komplexeren Aufbau auf.To create a certain elasticity of the Tüllenabschnitts it is known to introduce oriented transverse to the cable direction cuts in the Tüllenabschnitt, wherein the incisions on opposite sides the Tüllenabschnitts or may be formed circumferentially. Due to the cuts, however, the production of such strain relief / bending protection devices is associated with an increased economic outlay. If the devices are produced, for example, by means of an injection molding process, the incisions are usually made in the grommet section with the aid of slides, which have to be pushed into the injection mold used to produce the device, ie the injection mold has a more complex structure.

Aus der EP 0 419 766 A1 ist ein elektrischer Steckverbinder mit einer Zugentlastungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1 bekannt. Die DE 18 97 976 U offenbart eine Knickschutztülle, deren Querschnittsfläche stufenweise abnimmt. Die DE 30 39 257 A1 zeigt eine abgewinkelte Knickschutztülle.From the EP 0 419 766 A1 An electrical connector with a strain relief device according to the preamble of claim 1 is known. The DE 18 97 976 U discloses a kink protection grommet, the cross-sectional area decreases gradually. The DE 30 39 257 A1 shows an angled bend protection sleeve.

Der Erfindung liegt die Aufgabe zugrunde, eine Zugentlastungs-/Biegeschutzvorrichtung zu schaffen, die mit minimalem wirtschaftlichem Aufwand herstellbar ist und dabei optimalen Schutz vor Kabelbruch bietet.The invention has for its object to provide a strain relief / bending protection device that can be produced with minimal economic effort and thereby provides optimal protection against cable breakage.

Die Aufgabe wird durch eine Zugentlastungs-/Biegeschutzvorrichtung mit den Merkmalen des Anspruchs 1 und insbesondere dadurch gelöst, dass der Tüllenabschnitt relativ zu dem Basisabschnitt abgewinkelt ist und die Zugentlastungs-/Biegeschutzvorrichtung durch ein Spritzgussverfahren hergestellt ist.The object is achieved by a Zugentlastungs- / Biegeschutzvorrichtung with the features of claim 1 and in particular in that the Tüllenabschnitt is angled relative to the base portion and the Zugentlastungs- / Biegeschutzvorrichtung is made by an injection molding process.

Die erfindungsgemäße Verjüngung des Tüllenabschnitts in Richtung seines dem Basisabschnitt abgewandten freien Endes verleiht dem Tüllenabschnitt eine in Richtung seines freien Endes zunehmende Elastizität, so dass sich der Tüllenabschnitt bei entsprechender Dimensionierung, d.h. bei entsprechender Wandstärke bzw. entsprechender Abnahme der Wandstärke zum freien Ende hin, bereits unter Ausübung geringerer Auslenkungskräfte auf das Kabel gemeinsam mit dem Kabel verbiegen kann. Dabei wandert der Biegepunkt des Kabels bei zunehmender Auslenkungskraft aufgrund der in Richtung des Basisabschnitts zunehmenden Querschnittsfläche des Tüllenabschnitts immer weiter in Richtung Basisabschnitt, d.h. es gibt keinen festgelegten, sondern vielmehr einen wandernden Biegepunkt, wodurch das Risiko eines Kabelbruchs deutlich reduziert ist.The tapering of the Tüllenabschnitts invention in the direction of its base portion facing away from the free end gives the Tüllenabschnitt increasing in the direction of its free end elasticity, so that the Tüllenabschnitt with appropriate dimensioning, ie with appropriate wall thickness or a corresponding decrease in the wall thickness towards the free end, even with the exercise of lower deflection forces on the cable can bend together with the cable. In this case, the bending point of the cable moves with increasing deflection force due to the increasing in the direction of the base portion cross-sectional area of Tüllenabschnitts towards the base portion, ie there is no fixed, but rather a wandering bending point, whereby the risk of cable breakage is significantly reduced.

Erfindungsgemäß weist der Tüllenabschnitt einen runden Querschnitt auf, d.h. er besitzt keine Kanten, welche zu einer erhöhten Steifigkeit des Tüllenabschnitts in bestimmten Auslenkungsrichtungen führen würden. Stattdessen wird durch den runden Querschnitt des Tüllenabschnitts in allen Richtungen quer zur Kabelrichtung ein optimaler Elastizitätsverlauf des Tüllenabschnitts erreicht, d.h. die erfindungsgemäße Vorrichtung besitzt keine Vorzugsrichtungen, in denen ein besserer Schutz erreicht wird, sondern es ist ein optimaler Schutz vor Kabelbruch bei Auslenkungen des Kabels in beliebigen Richtungen quer zur Kabelrichtung gewährleistet.According to the invention, the spout portion has a round cross-section, i. it has no edges, which would lead to increased rigidity of the Tüllenabschnitts in certain deflection directions. Instead, the round cross section of the spout portion in all directions transverse to the cable direction achieves optimum elasticity of the spout portion, i. the device according to the invention has no preferred directions in which a better protection is achieved, but it is an optimal protection against cable break at deflections of the cable in any direction across the cable direction guaranteed.

Aufgrund seines runden Querschnitts weist der Tüllenabschnitt außerdem eine besonders einfache geometrische Form auf, die sich beispielsweise mittels eines Spritzgussverfahrens leicht realisieren lässt, wodurch die erfindungsgemäße Vorrichtung mit einem minimalen wirtschaftlichen Aufwand herstellbar ist.Due to its round cross section, the spout portion also has a particularly simple geometric shape, which can be easily realized, for example by means of an injection molding process, whereby the device according to the invention can be produced with minimal economic effort.

Bei dem Kabel muss es sich nicht notwendigerweise um ein elektrisches Kabel handeln, wie zum Beispiel ein zur Datenübertragung vorgesehenes Hochgeschwindigkeitskabel. Vielmehr kann die erfindungsgemäße Vorrichtung auch in Verbindung mit einem optischen Kabel, z.B. Glasfaserkabel, zum Einsatz kommen.The cable does not necessarily have to be an electrical cable, such as a high-speed cable for data transmission. Rather, the device according to the invention also in conjunction with an optical cable, such as fiber optic cable, are used.

Vorteilhafte Ausbildungen der Erfindung sind den Unteransprüchen, der Beschreibung und der Zeichnung zu entnehmen.Advantageous embodiments of the invention are described in the dependent claims, the description and the drawings.

Gemäß einer bevorzugten Ausführungsform weist der Tüllenabschnitt keine Einschnitte oder Aussparungen auf. Dies trägt zu einer einfacheren geometrischen Gestalt und somit letztlich kostengünstigeren Herstellbarkeit der Vorrichtung bei. Insbesondere braucht eine zur Herstellung der Vorrichtung vorgesehene Spritzgussform nicht mit zusätzlichen Mitteln zur Einbringung von Einschnitten oder Aussparungen, z.B. Schiebern, ausgerüstet zu werden, d.h. es kann eine einfachere Spritzgussform verwendet werden.According to a preferred embodiment, the spout portion has no cuts or recesses. This contributes to a simpler geometric shape and thus ultimately more cost-effective manufacturability of the device. In particular, an injection mold intended for the manufacture of the device need not be provided with additional means for introducing cuts or recesses, e.g. Sliders to be equipped, i. a simpler injection mold can be used.

Gemäß einer Ausführungsform nimmt die Querschnittsfläche des Tüllenabschnitts kontinuierlich ab, d.h. der Tüllenabschnitt kann eine kegelstumpfförmige Gestalt aufweisen.According to one embodiment, the cross-sectional area of the spout portion decreases continuously, i. the spout portion may have a frusto-conical shape.

Gemäß einer alternativen Ausführungsform nimmt die Querschnittsfläche des Tüllenabschnitts stufenweise ab, wodurch mehrere diskrete Teilabschnitte gebildet werden.According to an alternative embodiment, the cross-sectional area of the spout portion gradually decreases, thereby forming a plurality of discrete portions.

Grundsätzlich können die Längen der Teilabschnitte, d.h. ihre Abmessungen in Kabelrichtung gesehen, alle gleich sein. Bevorzugt sind die Längen wenigstens zweier Teilabschnitte aber unterschiedlich. Durch eine geeignete Wahl der Längen der Teilabschnitte unter Berücksichtigung ihrer jeweiligen Wandstärke, d.h. der Querschnittsfläche des Tüllenabschnitts im Bereich des jeweiligen Teilabschnitts, lässt sich das Biegeverhalten und somit die gewünschte Schutzfunktion der Vorrichtung gezielt an das Kabel anpassen, was zu einer optimalen Schutzfunktion beiträgt.In principle, the lengths of the sections, ie their dimensions seen in the cable direction, all be the same. Preferably, however, the lengths of at least two subsections are different. By a suitable choice of the lengths of the sections, taking into account their respective wall thickness, ie the cross-sectional area of the Tüllenabschnitts in the region of the respective section, the bending behavior and thus specifically adapting the desired protective function of the device to the cable, which contributes to an optimal protective function.

Erfindungsgemäß wird die Vorrichtung mittels eines Spritzgussverfahrens hergestellt. Dabei ist es vorteilhaft, wenn die Querschnittsfläche des Tüllenabschnitts zwischen zwei Teilabschnitten stetig abnimmt, d.h. wenn der Übergang zwischen zwei Teilabschnitten nicht sprunghaft, sondern beispielsweise durch eine Schrägfläche bzw. Kegelmantelfläche gebildet ist, da sich hierdurch die Bildung von Hinterschneidungen während des Spritzgießens verhindern lassen.According to the invention, the device is produced by means of an injection molding process. In this case, it is advantageous if the cross-sectional area of the grommet section steadily decreases between two sections, i. If the transition between two sections is not abrupt, but for example, is formed by an inclined surface or conical surface, as this can prevent the formation of undercuts during injection molding.

Weist das Kabel einen kreisförmigen Querschnitt auf, so ist es vorteilhaft, wenn auch der Querschnitt des Tüllenabschnitts kreisförmig ist, da sich in diesem Fall ein optimaler Biegeschutz in alle Richtungen quer zur Kabelrichtung ergibt. Grundsätzlich ist es aber auch möglich, den Querschnitt des Tüllenabschnitts oval oder ellipsenförmig zu wählen, beispielsweise wenn das Kabel aus zwei nebeneinander verlaufenden Rundkabeln besteht oder das Kabel einen allgemein abgeflachten Querschnitt aufweist.If the cable has a circular cross section, then it is advantageous if the cross section of the sleeve section is also circular, since in this case optimal bending protection results in all directions transversely to the cable direction. In principle, however, it is also possible to choose the cross section of the Tüllenabschnitts oval or elliptical, for example, if the cable consists of two side by side extending round cables or the cable has a generally flattened cross-section.

Nachfolgend wird die Erfindung rein beispielhaft anhand möglicher Ausführungsformen unter Bezugnahme auf die beigefügte Zeichnung beschrieben. Es zeigen:

Fig. 1A - C
verschiedene Ansichten einer erfindungsgemäßen Zugentlastungs-/Biegeschutzvorrichtung gemäß einer ersten Ausführungsform; und
Fig. 2A - C
verschiedene Ansichten einer erfindungsgemäßen Zugentlastungs-/Biegeschutzvorrichtung gemäß einer zweiten Ausführungsform.
The invention will be described purely by way of example with reference to possible embodiments with reference to the accompanying drawings. Show it:
Fig. 1A - C
different views of a strain relief / bending protection device according to the invention according to a first embodiment; and
Fig. 2A - C
different views of a Zugentlastungs- / Biegeschutzvorrichtung invention according to a second embodiment.

Fig. 1 zeigt eine erste Ausführungsform einer Zugentlastungs-/Biegeschutzvorrichtung 10, die zum Schutz eines Kabels 12 vorgesehen ist, im vorliegenden Ausführungsbeispiel eines Hochgeschwindigkeitskabels mit im Wesentlichen kreisförmigem Querschnitt. Das Kabel 12 ist mit einem Steckverbinder 14 verbunden, welcher ein Gehäuse 16 aufweist. An einer Vorderseite 18 des Gehäuses 16 steht ein Steckkontakt 20 hervor, im vorliegenden Ausführungsbeispiel ein USB- oder LVDS-Stecker. Die mit der Steckrichtung des Steckkontakts 20 zusammenfallende Zentralachse des Steckkontakts 20 definiert eine Hauptachse des Steckverbinders 14. Fig. 1 shows a first embodiment of a Zugentlastungs- / Biegeschutzvorrichtung 10, which is provided to protect a cable 12, in the present embodiment, a high-speed cable with a substantially circular cross-section. The cable 12 is connected to a connector 14, which has a housing 16. At a Front 18 of the housing 16 is a plug contact 20 shows, in the present embodiment, a USB or LVDS connector. The coincident with the plug-in direction of the plug-in contact 20 central axis of the plug-in contact 20 defines a main axis of the connector 14th

Die Zugentlastungs-/Biegeschutzvorrichtung 10 ist an einer der Vorderseite 18 gegenüberliegenden Rückseite 22 des Gehäuses 16 fest angebracht. Beispielsweise kann die Zugentlastungs-/Biegeschutzvorrichtung 10 an das Gehäuse 16 angespritzt, angeklebt oder angeschweißt sein.The strain relief / bending protection device 10 is fixedly mounted on a rear side 22 of the housing 16 opposite the front side 18. For example, the strain relief / bending protection device 10 may be molded, glued or welded to the housing 16.

Bei der Zugentlastungs-/Biegeschutzvorrichtung 10 handelt es sich um ein durch ein Spritzgussverfahren hergestelltes, einstückig ausgebildetes Kunststoffbauteil. Die Zugentlastungs-/Biegeschutzvorrichtung 10 umfasst einen Basisabschnitt 24, der mit dem Gehäuse 16 in Kontakt steht, und einen Tüllenabschnitt 26, der aus dem Basisabschnitt 24 hervorgeht und einen außerhalb des Gehäuses 16 verlaufenden Abschnitt des Kabels 12 über eine gewisse Länge umschließt.The strain relief / bending protection device 10 is an integrally formed plastic component produced by an injection molding process. The strain relief / bending protection device 10 comprises a base portion 24 which is in contact with the housing 16, and a spout portion 26 which emerges from the base portion 24 and encloses a portion of the cable 12 extending outside the housing 16 over a certain length.

Bei der in Fig. 1 dargestellten Ausführungsform erstreckt sich der Tüllenabschnitt 26 rechtwinklig zu der Hauptachse des Steckverbinders 14, d.h. das Kabel 12 wird unter einem Winkel von 90° in das Gehäuse 16 eingeführt. Außerdem ist der Tüllenabschnitt 26 um etwa 45° relativ zu einer durch den Steckkontakt 20 definierten Ebene verkippt.At the in Fig. 1 In the illustrated embodiment, the spout portion 26 extends at right angles to the major axis of the connector 14, ie the cable 12 is inserted into the housing 16 at an angle of 90 °. In addition, the Tüllenabschnitt 26 is tilted by about 45 ° relative to a plane defined by the plug contact 20 level.

Es sei darauf hingewiesen, dass sich der Tüllenabschnitt 26 nicht notwendigerweise rechtwinklig zu der Hauptachse des Steckverbinders 14 erstrecken muss, sondern je nach Anwendungsfall auch andere Winkel mit der Hauptachse des Steckverbinders 14 bilden kann. So zeigt Fig. 2 beispielsweise eine Ausführungsform, bei welcher sich der Tüllenabschnitt 26 unter einem Winkel von etwa 45° zu der Hauptachse des Steckverbinders 14 erstreckt. Grundsätzlich ist es außerdem möglich, den Tüllenabschnitt 26 überhaupt nicht abzuwinkeln, d.h. so auszubilden, dass er sich koaxial mit der Hauptachse des Steckverbinders 14 erstreckt.It should be noted that the grommet portion 26 need not necessarily extend at right angles to the main axis of the connector 14, but depending on the application, other angles with the main axis of the connector 14 may form. So shows Fig. 2 For example, an embodiment wherein the spout portion 26 is at an angle of about 45 ° to the major axis of the connector 14 extends. In principle, it is also possible not to bend the grommet portion 26 at all, that is, to form such that it extends coaxially with the main axis of the plug connector 14.

Der Tüllenabschnitt 26 weist einen runden, im dargestellten Ausführungsbeispiel kreisförmigen, Querschnitt auf und verjüngt sich in Richtung seines dem Basisabschnitt 24 abgewandten freien Endes 28, d.h. die Querschnittsfläche des Tüllenabschnitts 26 wird mit zunehmendem Abstand vom Basisabschnitt 24 kleiner. Aufgrund der Kreisform des Querschnitts des Tüllenabschnitts 26 ist die Abnahme der Querschnittsfläche des Tüllenabschnitts bei der dargestellten Ausführungsform gleichbedeutend mit einer Abnahme des Durchmessers bzw. der Wandstärke des Tüllenabschnitts 26.The spout portion 26 has a circular, circular in the illustrated embodiment, cross section and tapers in the direction of its base portion 24 facing away from the free end 28, i. the cross-sectional area of the spout portion 26 becomes smaller as the distance from the base portion 24 increases. Due to the circular shape of the cross section of the spout portion 26, the decrease in the cross-sectional area of the spout portion in the illustrated embodiment is equivalent to a decrease in the diameter or wall thickness of the spout portion 26.

Wie Fig. 1 zeigt, weist der Tüllenabschnitt 26 keinen kontinuierlich abnehmenden Querschnittsflächenverlauf auf, d.h. also keine Kegelstumpfform, was durchaus möglich wäre, sondern die Querschnittsfläche nimmt bei der dargestellten Ausführungsform stufenweise ab.As Fig. 1 shows, the Tüllenabschnitt 26 has no continuously decreasing cross-sectional surface shape, ie no truncated cone shape, which would be quite possible, but the cross-sectional area gradually decreases in the illustrated embodiment.

Konkret weist die dargestellte Ausführungsform zwei Stufen auf, d.h. der Tüllenabschnitt 26 setzt sich aus drei im Wesentlichen hohlzylindrischen Teilabschnitten 30 unterschiedlicher Wandstärke zusammen, wobei jeder weiter vom Basisabschnitt 24 entfernte Teilabschnitt 30 eine geringere Wandstärke als der vorherige Teilabschnitt 30 aufweist. Der Übergang von einem Teilabschnitt 30 zum nächsten erfolgt dabei nicht sprunghaft, sondern über einen Zwischenabschnitt 32, welcher eine schräg abfallende Oberfläche besitzt und somit gewissermaßen ein Kegelstumpfsegment bildet.Specifically, the illustrated embodiment has two stages, ie, the spout portion 26 is composed of three substantially hollow cylindrical sections 30 of different wall thickness, each further removed from the base portion 24 section 30 has a smaller wall thickness than the previous section 30. The transition from one section 30 to the next does not take place abruptly, but via an intermediate section 32, which has a sloping surface and thus effectively forms a truncated cone segment.

Die Anzahl der Teilabschnitte 30, die Wandstärken der einzelnen Teilabschnitte 30 und die Längen der einzelnen Teilabschnitte 30 in Kabelrichtung gesehen, d.h. also ihre axialen Abmessungen, können je nach Anwendungsfall so gewählt sein, dass der Tüllenabschnitt 26 insgesamt eine gewünschte Biegecharakteristik zeigt und einen optimalen Schutz des Kabels 12 vor Kabelbruch gewährleistet.The number of sections 30, the wall thicknesses of the individual sections 30 and the lengths of the individual sections 30 in the cable direction, i. So their axial dimensions, depending on the application may be chosen so that the Tüllenabschnitt 26 shows a total desired bending characteristics and ensures optimal protection of the cable 12 from cable breakage.

Die in Fig. 2 dargestellte Ausführungsform einer Zugentlastungs-/Biegeschutzvorrichtung 10 unterscheidet sich von der in Fig. 1 gezeigten und voranstehend beschriebenen Ausführungsform lediglich darin, dass sich der Tüllenabschnitt 26 nicht rechtwinklig sondern unter einem Winkel von etwa 45° zu der Hauptachse des Steckverbinders 14 erstreckt. Darüber hinaus weisen die Teilabschnitte 30 des Tüllenabschnitts 26 der zweiten Ausführungsform etwas andere Abmessungen als diejenigen der ersten Ausführungsform auf.In the Fig. 2 illustrated embodiment of a strain relief / bending protection device 10 differs from the in Fig. 1 shown and described above embodiment only in that the spout portion 26 extends not at right angles but at an angle of approximately 45 ° to the main axis of the connector 14. Moreover, the sections 30 of the spout portion 26 of the second embodiment have slightly different dimensions than those of the first embodiment.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Zugentlastungs-/BiegeschutzvorrichtungStrain relief / bending protection device
1212
Kabelelectric wire
1414
SteckverbinderConnectors
1616
Gehäusecasing
1818
Vorderseitefront
2020
Steckkontaktplug contact
2222
Rückseiteback
2424
Basisabschnittbase section
2626
Tüllenabschnittspout
2828
freies Endefree end
3030
Teilabschnittpart Of
3232
Zwischenabschnittintermediate section

Claims (8)

  1. Strain-relief/ bend prevention device (10) for a cable (12), in particular a high-speed cable, connected to a plug connector (14) comprising a base portion (24) which may be fastened to a housing (16) of the plug connector (14) and a sleeve portion (26) originating from the base portion (24) for surrounding the cable (12) in an area outside the housing (16), wherein the sleeve portion (26) is provided with a continuously round cross-section and the cross-sectional area of the sleeve portion (26) decreases with increasing distance from the base portion (24),
    characterized in that
    the sleeve portion (26) is angled relative to the base portion (24), and the strain-relief/ bend prevention device (10) is formed by an injection molding process.
  2. Device (10) according to claim 1,
    characterized in that
    the sleeve portion (26) comprises no cuts or recesses.
  3. Device (10) according to claim 1 or 2,
    characterized in that
    the cross-sectional area of the sleeve portion (26) decreases continuously.
  4. Device (10) according to claim 1 or 2,
    characterized in that
    the cross-sectional area of the sleeve portion (26) decreases gradually while forming discrete sub-portions (30).
  5. Device (10) according to claim 4,
    characterized in that
    the cross-sectional area of the sleeve portion (26) decreases steadily between two sub-portions (30).
  6. Device (10) according to claim 4 or 5,
    characterized in that
    the lengths of at least two sub-portions (30) are different.
  7. Device (10) according to one of the preceding claims,
    characterized in that
    the cross-section of the sleeve portion (26) has a circular, oval or elliptical form.
  8. Device (10) according to one of the preceding claims,
    characterized in that
    it comprises a plastic material such as PVC.
EP11003937.7A 2011-05-12 2011-05-12 Strain relief/bend prevention device Active EP2523265B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11003937.7A EP2523265B1 (en) 2011-05-12 2011-05-12 Strain relief/bend prevention device
PCT/EP2012/055781 WO2012152505A1 (en) 2011-05-12 2012-03-30 Strain-relief/bending-protection apparatus
US14/117,075 US9172177B2 (en) 2011-05-12 2012-03-30 Strain-relief/bending-protection apparatus
CN201280022623.8A CN103620883B (en) 2011-05-12 2012-03-30 Stress mitigates/bends preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11003937.7A EP2523265B1 (en) 2011-05-12 2011-05-12 Strain relief/bend prevention device

Publications (2)

Publication Number Publication Date
EP2523265A1 EP2523265A1 (en) 2012-11-14
EP2523265B1 true EP2523265B1 (en) 2014-07-16

Family

ID=44546049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11003937.7A Active EP2523265B1 (en) 2011-05-12 2011-05-12 Strain relief/bend prevention device

Country Status (4)

Country Link
US (1) US9172177B2 (en)
EP (1) EP2523265B1 (en)
CN (1) CN103620883B (en)
WO (1) WO2012152505A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104617625A (en) * 2015-02-07 2015-05-13 邹中霞 Connector of charger
CN105390878B (en) * 2015-12-15 2017-08-25 苏州源硕精密模具有限公司 A kind of company's machine terminal suitable for multidirectional connection
US10505307B2 (en) * 2017-03-30 2019-12-10 Microsoft Technology Licensing, Llc Plastic-lined interconnect receptacle

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Publication number Priority date Publication date Assignee Title
DE1897976U (en) * 1964-03-10 1964-08-06 Reich Maschf Gmbh Karl KINK PROTECTION FOR CABLE CONNECTIONS TO AN ELECTRICAL DEVICE.
US4133971A (en) * 1977-02-09 1979-01-09 The Hoover Company Hand grip mounted switch and strain relief
DE3039257C2 (en) * 1980-10-17 1983-05-05 Siemens AG, 1000 Berlin und 8000 München Cable entry for air-conducting raised floor
US4461529A (en) * 1982-06-16 1984-07-24 W. L. Gore & Associates, Inc. Strain relief boot
US4641899A (en) * 1985-07-18 1987-02-10 Allied Corp. Multi-part electrical connector assembly
DE3932709A1 (en) * 1989-09-29 1991-04-18 Rose Walter Gmbh & Co Kg ELECTRICAL CONNECTOR
JP2515735Y2 (en) * 1990-11-21 1996-10-30 住友電装株式会社 Wire harness connector cover
US5138678A (en) * 1991-09-20 1992-08-11 Briggs Robert C Connector with a variable direction strain relief
US5462457A (en) * 1994-09-22 1995-10-31 The Whitaker Corporation Overmold strain relief and snag prevention feature
US5641307A (en) * 1994-12-01 1997-06-24 Gerrans; Al Marine electrical connector
US5957727A (en) * 1996-12-12 1999-09-28 The Whitaker Corporation Electrical connector assembly
US6019645A (en) * 1997-12-23 2000-02-01 Molex Incorporated Electrical connector assembly with terminal position assurance device
US6338645B1 (en) * 2000-07-28 2002-01-15 Apple Computer, Inc. Connector having a cable that is relatively moveable about an axis
US6554489B2 (en) * 2001-03-28 2003-04-29 Corning Cable Systems Llc Fiber optic cable guide and method of application
JP2007288975A (en) * 2006-04-19 2007-11-01 Yazaki Corp Electrical connection box
DE102006046049A1 (en) * 2006-09-28 2008-04-03 Siemens Ag Electric machine, in particular electric motor, with a connection cable crimped on the machine side
DE102009053364B3 (en) * 2009-11-14 2011-01-05 Harting Electronics Gmbh & Co. Kg Plug connector housing for blocking and curvature electrical cable connected with plug connector, has insulator at front face of opening, surrounded by square collar

Also Published As

Publication number Publication date
WO2012152505A1 (en) 2012-11-15
EP2523265A1 (en) 2012-11-14
CN103620883B (en) 2017-03-01
CN103620883A (en) 2014-03-05
US9172177B2 (en) 2015-10-27
US20140295694A1 (en) 2014-10-02

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