EP2947723B1 - Connecteur électrique à fiche - Google Patents

Connecteur électrique à fiche Download PDF

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Publication number
EP2947723B1
EP2947723B1 EP14168960.4A EP14168960A EP2947723B1 EP 2947723 B1 EP2947723 B1 EP 2947723B1 EP 14168960 A EP14168960 A EP 14168960A EP 2947723 B1 EP2947723 B1 EP 2947723B1
Authority
EP
European Patent Office
Prior art keywords
plug
face
coupling
sealing element
connector
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
EP14168960.4A
Other languages
German (de)
English (en)
Other versions
EP2947723A1 (fr
Inventor
Torsten Neuhäuser
Frank Gutmann
Olaf Machul
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.)
Sick AG
Original Assignee
Sick AG
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 Sick AG filed Critical Sick AG
Priority to EP14168960.4A priority Critical patent/EP2947723B1/fr
Priority to US14/716,042 priority patent/US20150340802A1/en
Priority to JP2015102392A priority patent/JP5933788B2/ja
Publication of EP2947723A1 publication Critical patent/EP2947723A1/fr
Application granted granted Critical
Publication of EP2947723B1 publication Critical patent/EP2947723B1/fr
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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/521—Sealing between contact members and housing, e.g. sealing insert
    • 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
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal

Definitions

  • the present invention relates to a connector for a single- or multi-wire electrical cable, comprising a plug comprising a plug body with an end face and at least one protruding from the end face pin, a coupling comprising a coupling body with an end face, wherein in the end face at least one receiving opening for inserting the at least one connecting pin of the connector for connecting is arranged, an operable closure for holding the plug body to the coupling body with inserted in the receiving port pin, and at least one sealing element made of an elastically deformable material for sealing the connection between the Plug and the coupling.
  • Such connectors are used for example for connecting actuators and sensors to safety controllers.
  • the plug can be designed in particular as a built-in plug, which is integrated in a sensor housing or actuator housing. Due to the closure, inadvertent disconnection of the connector during operation of the associated device is avoided. Especially in the environment of industrial plants, it is important to protect the connector from contamination and moisture from entering.
  • a sealing element in the form of an O-ring, which is arranged in a coupling-side closure sleeve and, when the closure is closed, by a plug-side inserted into the coupling-side closure sleeve Closing sleeve is pressed against the sleeve base.
  • the sealing surface is relatively narrow in this embodiment, so that the sealing effect is often inadequate in practice. In addition, it may cause damage to the O-ring due to the narrow sealing surface, especially with frequent connection and disconnection of the connector.
  • the WO 2013/161341 A1 discloses a connector with a plug, a coupling, a plastic sealing plate and a snap lock.
  • the sealing plate is arranged between the mutually facing end faces of the plug and the coupling.
  • the US Pat. No. 6,475,008 B1 discloses a submersible connector equipped with a compressible sealing element and an elastomeric material insulating washer.
  • the insulating disk has in the area of the pin penetrations forward and rearwardly projecting beveled projections.
  • the closure has a connector-side provided on the plug-side closure sleeve and one on the coupling body provided on the coupling side closure sleeve, which are screwed together.
  • the sealing element can thus be integrated in a simple manner in the plug.
  • the plug-side closure sleeve and the coupling-side closure sleeve can also be locked together.
  • the at least one sealing element made of a soft plastic.
  • the at least one sealing element is further clamped under deformation between the end face of the plug body and the end face of the coupling body when the closure holds the plug body to the coupling body.
  • the seal thus takes place directly between the plug body and the coupling body.
  • This is advantageous in that the sealing surface is enlarged relative to an outer seal by means of an O-ring.
  • effective clamping force is evenly distributed, so that damage to the sealing element can be avoided.
  • the susceptibility of the seal to component tolerances can be reduced, since the end faces of the plug body and the coupling body abut each other even with toleranced components.
  • the invention further provides for fastening the sealing element to the end face of the plug body - the so-called plug base - since in this case a frictional engagement between the connecting pin and a feedthrough of the sealing element provided for the connecting pin can ensure a correct seating of the sealing element. If necessary, the sealing element can be glued to the end face of the plug body.
  • such plug connectors have a plurality of (for example three or more) connecting pins in the plug and a corresponding number of receiving openings in the coupling, which then advantageously results in a particularly good adjustment of the sealing element.
  • a connector according to the invention are at least two spaced apart pins from the end face of the plug body, which are insertable into respective receiving openings of the end face of the coupling body, wherein extending around each of the pins an annular buffer member made of an elastically deformable material.
  • Such buffer elements provide z. B. if necessary for a tolerance compensation.
  • the invention provides that the annular buffer elements are attached to a plate-shaped or disk-shaped base body of the sealing element. The handling of the sealing element in the manufacture of the connector is facilitated.
  • An embodiment of the invention provides that, in a radial direction with respect to the longitudinal axis of the at least one connecting pin, the sealing element does not project beyond the edge of the end face of the plug body and / or the edge of the end face of the coupling body.
  • the sealing element is thus arranged completely between the two end faces in this embodiment. This allows a uniform distribution of the clamping force and thus a reduction of the mechanical load of the sealing element.
  • no space for the sealing element must be provided in the radial region surrounding the plug body and the coupling body.
  • a further embodiment of the invention provides that the connector-side closure sleeve provided on the plug body is designed for the lateral gripping around of the coupling body, the sealing element being in a coupling receptacle is arranged, which is formed by the end face of the plug body and an inner wall of the plug-side closure sleeve.
  • Such closures are z. B. in the form of screw caps for many connectors used to ensure a secure fit of the plug body on the coupling body.
  • an O-ring is often placed as a sealing member at the bottom of the coupling-side locking sleeve, so that when closing the closure, the plug-side locking sleeve screwed into the coupling-side locking sleeve presses against the O-ring with its front edge.
  • the sealing effect in this configuration depends on the torque with which the two closure sleeves are tightened against each other. If the torque is too low, the O-ring will not be sufficiently clamped so that dirt and moisture can penetrate into the connector. If the torque is too high, the O-ring will be damaged, which in turn will reduce the sealing effect.
  • a particular problem in this case are the shearing forces exerted on the O-ring in the course of screwing the closure sleeves.
  • the sealing element between the end faces of the plug body and the coupling body, the above-mentioned problems can be avoided even in embodiments with a provided on the plug body and the coupling body embracing sleeve.
  • the sealing element completely covers the bottom of the coupling receptacle.
  • the sealing element comprises a base plate designed as a flat plate or disk whose one flat side rests against the end face of the plug body and the other flat side is designed for application to the end face of the coupling body, or vice versa, wherein the base body at least one passage for performing the at least one connection pin.
  • a flat base body provides a large sealing surface.
  • a flat side of the base body abut the plug body or the coupling body, for example, be attached to this, while the other flat side is exposed and rests only in the connected state of the plug and coupling on the end face of the other component.
  • the at least one pin can sit without play in the implementation. As a result, a particularly secure sealing effect can be achieved. In addition, there is the possibility that the sealing element is held exclusively on the frictional engagement between the pin and the inner wall of the bushing on the connector body.
  • the at least one sealing element may be made of a silicone and / or an elastomer. Such sealing materials are inexpensive and easy to handle.
  • the at least one sealing element may also be made of a curable, in particular silicone-based, polyurethane-based or epoxy-based potting compound. As a result, a high sealing effect can be achieved.
  • a special embodiment provides that the at least one sealing element is designed as an injection-molded component, in particular as a multi-component injection-molded component.
  • An injection molding construction is manufacturing technology advantageous. In the context of multi-component injection molding, such as 2K injection molding, the sealing effect and the mechanical stability of the sealing element can be optimized by combining different materials.
  • the at least one sealing element can be molded directly onto the end face of the plug body or to the end face of the coupling body. This allows a particularly quick and easy production.
  • the in Fig. 1 A and 1 B illustrated, designed according to the prior art connector is used for selectively connecting and disconnecting a multicore electrical line here and includes a plug 11 and a coupling 13.
  • the plug 11 can be designed as a built-in plug and z. B. in a sensor housing be integrated.
  • the clutch 13 may accordingly be located at one end of a connection cable for the corresponding sensor.
  • the connector 11 comprises a plug body 15 with a flat end face 17 and three protruding from the end face 17 pins 19.
  • the coupling 13 comprises a coupling body 21 with a - also flat here - face 23 in which three receiving openings 25 for inserting the pins 19 of Plug 11 are arranged. To make the electrical connection, the plug 11 and the coupling 13 are put together by inserting the connecting pins 19 into the receiving openings 25. It is understood that the number, arrangement and shape of the pins 19 may vary depending on the application.
  • a closure 27 which is designed here as a screw cap and comprises a plug-side closure sleeve 29 and a coupling-side closure sleeve 31.
  • the plug-side closure sleeve 29 has an external thread 33 and is secured against rotation on the plug body 15. Furthermore, the plug-side closure sleeve 29 for lateral gripping the -.
  • cylindrical - coupling body 21 is formed.
  • the coupling-side closure sleeve 31 has an internal thread 37 and is rotatably mounted on the coupling body 21 about a longitudinal axis L of the electrical line.
  • a sealing element 45 in the form of an O-ring, which is made of an elastically deformable material. As shown, the sealing element 45 bears against a bottom 47 of the coupling-side closure sleeve 31.
  • the plug-side closure sleeve 29 passes into the coupling-side closure sleeve 31.
  • the coupling-side closure sleeve 31 is then screwed onto the plug-side closure sleeve 29 until the in Fig. 1 B reached shown connection state is.
  • the connection pins 19 make contact with the receiving openings 25 in a contacting manner.
  • the front border 49 of the plug-side closure sleeve 29 presses in the connection state against the sealing element 45, so that it is clamped between the plug-side closure sleeve 29 and the coupling-side closure sleeve 31.
  • Out Fig. 1 B shows that the clamping surface is only relatively small and the sealing element 45 is also unevenly loaded. Furthermore, comparatively strong shearing forces are exerted on the sealing element 45 when the closure sleeves 29, 31 are screwed together.
  • a sealing element 55 is arranged in the form of a flat disc on the end face 17 of the plug body 15.
  • the sealing element 55 is circular and has two flat sides 57A, 57B and a circumferential narrow side 59.
  • Three bushings 60 serve to pass through the connecting pins 19 and are adapted to their diameter.
  • the sealing element 55 may be made of a soft plastic, silicone and / or of an elastomer. As in Fig.
  • the sealing element 55 is arranged in a coupling receptacle 61, which is formed by the end face 17 of the plug body 15 and an inner wall 63 of the plug-side closure sleeve 29.
  • an O-ring is disposed on the bottom 47 of the coupling-side shutter sleeve 31, but this is not mandatory.
  • the sealing element 55 When plugging the plug 11 and the coupling 13, the sealing element 55 is clamped between the end face 17 of the plug body 15 and the end face 23 of the coupling body 21 and thereby uniformly compressed. This ensures a secure seal of the connection - regardless of the torque with which the coupling-side locking sleeve 31 is screwed onto the plug-side closure sleeve 29. Since only axial forces acting on the sealing element 55 and these are also distributed over a comparatively large area, is unlikely to damage the sealing element 55. This is especially true because no shear forces are exerted on that sealing element 55. Namely, during the screwing operation, the end face 17 of the plug body 15 and the end face 23 of the coupling body 21 remain in their untwisted initial state.
  • FIGS. 3A to 3E shown, designed according to a second embodiment of the invention connector is designed similar to that in connection with above Fig. 2A to 2D described connectors, wherein like-acting components are designated by the same reference numerals.
  • the sealing element 55 'here has a disc-shaped base body 65 and additionally three attached to the base body 65, annular buffer elements 67, which extend around the passages 60 around.
  • the annular buffer elements 67 are spaced apart, so that there are 67 clearances 69 between all the buffer elements. Upon compression of the buffer elements 67, these can escape radially outward due to the free spaces 69, as shown in FIG Fig. 3E is shown. This allows tolerance compensation.
  • the annular buffer elements 67 may be attached to the base body 65 or attached to the terminal pins 19 after attachment of the base body 65 to the plug body 15. In certain applications, it may also be sufficient to use only the annular buffer elements 67 as sealing elements. Such a configuration is in FIGS. 4A and 4B shown.
  • sealing elements 55, 55 ', 67 are shown as separate components. However, it is possible if necessary, such sealing elements 55, 55 ', 67 directly to the end face 17 of the plug body 15 or also to the end face 23 of the coupling body 21 pour or inject.
  • the seal according to the invention can be used in principle for any type of connector.
  • the sealing material present around the connecting pins 19 not only improves the sealing effect, but also improves the resistance to electrostatic discharge (ESD).
  • sealing elements, as used in the Figs. 2A-2D, 3A-3E, 4A and 4B are shown, also be arranged on the end face 23 of the coupling body 21.
  • an arrangement on the plug base has the advantage of a cheaper housing.
  • the invention allows a particularly reliable sealing of connectors even with comparatively large component tolerances.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Gasket Seals (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (9)

  1. Connecteur enfichable pour une ligne électrique à un fil ou à plusieurs fils, incluant :
    une partie mâle (11) qui inclut un corps mâle (15) avec une surface frontale (17) et au moins une broche de connexion (19) qui dépasse de la face frontale (17),
    une partie femelle (13) qui inclut un corps femelle (21) avec une surface frontale (23), dans laquelle au moins une ouverture de réception (25) est ménagée dans la surface frontale (23) du corps femelle (21) pour enficher ladite au moins une broche de connexion (19) de la partie mâle (11) pour établir la connexion,
    un moyen de fermeture actionnable (27) pour maintenir le corps mâle (15) sur le corps femelle (21) lorsque la broche de connexion (19) est enfichée dans l'ouverture de réception (25), et
    au moins un élément d'étanchéité (55') en un matériau élastiquement déformable destiné à étancher la liaison entre la partie mâle (11) et la partie femelle (13),
    dans lequel le moyen de fermeture (27) comprend une douille de fermeture (31) côté femelle, prévue sur le corps femelle (21), et dans lequel ledit au moins un élément d'étanchéité (55') est fabriqué en une matière plastique souple, et une douille de fermeture (29) côté mâle est prévue sur le corps mâle (15), laquelle est susceptible d'être vissée avec la douille d'obturation (31) côté femelle,
    dans lequel ledit au moins un élément d'étanchéité (55') est fixé sur la surface frontale (17) du corps mâle (15) et est coincé en se déformant entre la surface frontale (17) du corps mâle (15) et la surface frontale (23) du corps femelle (21) lorsque le moyen de fermeture (27) retient le corps mâle (15) sur le corps femelle (21),
    dans lequel au moins deux broches de connexion (19) écartées l'une de l'autre dépassent de la surface frontale (17) du corps mâle (15), lesdites broches pouvant être enfichées dans des ouvertures de réception (25) respectives de la surface frontale (23) du corps femelle (21), et dans lequel un élément tampon (67) de forme annulaire en un matériau élastiquement déformable s'étend tout autour de chacune des broches de connexion (19), caractérisé en ce que
    les éléments tampons de forme annulaire (67) sont rapportés sur un corps de base (65), en forme de plaque ou en forme de disque, de l'élément d'étanchéité (55'), et
    en ce que le corps de base en forme de plaque ou en forme de disque (65) de l'élément d'étanchéité (55') comporte une face plane (57a), détournée des éléments tampons de forme annulaire (67), qui est appliquée contre la surface frontale (17) du corps mâle (15).
  2. Connecteur enfichable selon la revendication 1,
    caractérisé en ce que l'élément d'étanchéité (55') ne dépasse pas, dans une direction radiale par référence à l'axe longitudinal (L) de ladite au moins une broche de connexion (19), au-delà de la bordure de la surface frontale (17) du corps mâle (15) et/ou au-delà de la bordure de la surface frontale (23) du corps femelle (21).
  3. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce que la douille de fermeture (29) prévue côté mâle sur le corps mâle (15) est réalisée de manière à entourer latéralement le corps mâle (21), et en ce que l'élément d'étanchéité (55') est agencé dans un logement femelle (61) qui est formé par la surface frontale (17) du corps mâle (15) et par une paroi intérieure (63) de la douille de fermeture (29) côté mâle.
  4. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce qu'il existe un espace libre (69) respectivement entre deux des éléments tampons (67).
  5. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce que les éléments tampons (67) forment eux-mêmes des éléments d'étanchéité et en ce que, outre les éléments tampons (67), il n'est prévu aucun autre élément d'étanchéité entre la surface frontale (17) du corps mâle (15) et la surface frontale (23) du corps femelle (21).
  6. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce que ledit au moins un élément d'étanchéité (55') est réalisé en silicone et/ou en élastomère.
  7. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce que ledit au moins un élément d'étanchéité (55') est réalisé à partir d'une masse à mouler durcissable, en particulier à base de silicone, à base de polyuréthane ou à base d'époxyde.
  8. Connecteur enfichable selon l'une des revendications précédentes, caractérisé en ce que ledit au moins un élément d'étanchéité (55, 55', 67) est réalisé sous forme de composant coulé par injection, en particulier de composant coulé par injection à plusieurs composantes.
  9. Connecteur enfichable selon la revendication 8,
    caractérisé en ce que ledit au moins un élément d'étanchéité (55, 55', 67) est rapporté par injection directement sur la surface frontale (17) du corps mâle (15) ou sur la surface frontale (23) du corps femelle (21).
EP14168960.4A 2014-05-20 2014-05-20 Connecteur électrique à fiche Active EP2947723B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14168960.4A EP2947723B1 (fr) 2014-05-20 2014-05-20 Connecteur électrique à fiche
US14/716,042 US20150340802A1 (en) 2014-05-20 2015-05-19 Plug Connector
JP2015102392A JP5933788B2 (ja) 2014-05-20 2015-05-20 プラグコネクタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14168960.4A EP2947723B1 (fr) 2014-05-20 2014-05-20 Connecteur électrique à fiche

Publications (2)

Publication Number Publication Date
EP2947723A1 EP2947723A1 (fr) 2015-11-25
EP2947723B1 true EP2947723B1 (fr) 2017-07-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14168960.4A Active EP2947723B1 (fr) 2014-05-20 2014-05-20 Connecteur électrique à fiche

Country Status (3)

Country Link
US (1) US20150340802A1 (fr)
EP (1) EP2947723B1 (fr)
JP (1) JP5933788B2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206914A1 (de) * 2016-04-22 2017-10-26 Phoenix Contact E-Mobility Gmbh Leistungskontakt mit auswechelbarem Kontaktbereich
DE102019131955A1 (de) * 2019-11-26 2021-05-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Steckerbaugruppe, Stecker für eine solche Steckerbaugruppe sowie Verfahren zur Montage der Steckerbaugruppe

Citations (3)

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US6142805A (en) * 1999-09-03 2000-11-07 Geo Space Corporation Waterproof geophysical connector
US6475008B1 (en) * 1996-06-24 2002-11-05 The United States Of America As Represented By The Secretary Of The Navy Underwater mateable electrical connector with anti-hydrolock feature
DE202010003546U1 (de) * 2010-03-15 2010-07-15 Tops Electronics Co., Ltd., Chung Ho City Verbinder-Aggregat

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US4540230A (en) * 1983-12-27 1985-09-10 Whittaker Corporation Weatherproof hermetically sealed connector device
JPH0749741Y2 (ja) * 1993-06-04 1995-11-13 小林電機工業株式会社 防水コネクタ
JP2001244017A (ja) * 2000-02-25 2001-09-07 Yazaki Corp コネクタ結合構造
US6893144B2 (en) * 2003-01-30 2005-05-17 Ben Fan Waterproof assembly for ornamental light string
DE10332325A1 (de) * 2003-07-16 2005-02-03 Schaltbau Gmbh Druckkontakt-Steckverbinder
DE102006007989A1 (de) * 2006-02-21 2007-08-30 Robert Bosch Gmbh Elektrischer Stecker mit abgedichteten Metalleinlegeteilen
JP5899814B2 (ja) * 2011-11-01 2016-04-06 株式会社ニデック 体内埋植装置
FR2988530B1 (fr) * 2012-03-23 2014-12-26 Addix Sa Ensemble de connexion electrique polyvalent
JP5729350B2 (ja) * 2012-04-25 2015-06-03 株式会社オートネットワーク技術研究所 防水コネクタ
US9437979B2 (en) * 2014-04-03 2016-09-06 Cooper Technologies Company Grounding for electrical connectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6475008B1 (en) * 1996-06-24 2002-11-05 The United States Of America As Represented By The Secretary Of The Navy Underwater mateable electrical connector with anti-hydrolock feature
US6142805A (en) * 1999-09-03 2000-11-07 Geo Space Corporation Waterproof geophysical connector
DE202010003546U1 (de) * 2010-03-15 2010-07-15 Tops Electronics Co., Ltd., Chung Ho City Verbinder-Aggregat

Also Published As

Publication number Publication date
JP5933788B2 (ja) 2016-06-15
JP2015222720A (ja) 2015-12-10
US20150340802A1 (en) 2015-11-26
EP2947723A1 (fr) 2015-11-25

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