EP3364504B1 - Connecteur à fiche cylindrique - Google Patents

Connecteur à fiche cylindrique Download PDF

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Publication number
EP3364504B1
EP3364504B1 EP18020066.9A EP18020066A EP3364504B1 EP 3364504 B1 EP3364504 B1 EP 3364504B1 EP 18020066 A EP18020066 A EP 18020066A EP 3364504 B1 EP3364504 B1 EP 3364504B1
Authority
EP
European Patent Office
Prior art keywords
plug connector
round plug
section
sleeve
insulating
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
EP18020066.9A
Other languages
German (de)
English (en)
Other versions
EP3364504A1 (fr
Inventor
Urs-Uwe Viehböck
Christoph Bartonek
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.)
NSK Ltd
Original Assignee
Bruel and Kjaer Vibro 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 Bruel and Kjaer Vibro GmbH filed Critical Bruel and Kjaer Vibro GmbH
Publication of EP3364504A1 publication Critical patent/EP3364504A1/fr
Application granted granted Critical
Publication of EP3364504B1 publication Critical patent/EP3364504B1/fr
Active legal-status Critical Current
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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
    • H01R13/527—Flameproof cases
    • 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
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Definitions

  • the present invention relates to a circular connector in which an air and creepage distance of at least 2 mm is formed to achieve a high protection class for potentially explosive areas.
  • Circular connectors for potentially explosive areas are known per se from the prior art.
  • minimum values for air and creepage distances between intrinsically safe circuits and grounded metal parts are required for device protection through intrinsic safety.
  • an air and creepage distance of at least 2.0 mm applies to the protection levels "ia” and "ib" at voltage values below 30 V (cf. IEC 60079-11, Chapter 6.3.1.1, Table 5).
  • IEC 60079 specifies the design and testing of intrinsically safe equipment intended for use in potentially explosive atmospheres and related equipment intended for connection to intrinsically safe circuits that lead into such atmospheres.
  • IEC 61076 describes M12 circular connectors that are used industrially for process control. These circular connectors consist of fixed, free connectors with a screw fastening. The male connectors typically have round contacts with diameters of 0.6 mm, 0.76 mm, 0.8 mm and 1.0 mm.
  • connectors with the dimension M12 are generally not used in applications in potentially explosive areas. Rather, either physically larger plugs (e.g. MILC-5015 or MIL-DTL-5015) are used, which have a corresponding clearance and creepage distance, or a plug connection is completely omitted and the connection of the corresponding cable is realized directly in the device .
  • physically larger plugs e.g. MILC-5015 or MIL-DTL-5015
  • connectors with size M12 or smaller which are a standard for data and signal transmission as well as power supply, is therefore often restricted to areas that are not at risk of explosion.
  • this prevents the inexpensive use of standardized cables for connecting technical devices.
  • M12 connectors with so-called S-coding e.g. from Phoenix Contact or Escha
  • S-coding e.g. from Phoenix Contact or Escha
  • M12 connectors with so-called S-coding which have the necessary clearances and creepage distances, but at a maximum application temperature of 90 ° C these can at most Achieve protection class IP69K.
  • this protection class is not sufficient for many applications in the field of sensors and automation.
  • US 3 146 054 A mentions a circular connector with a housing which has a sleeve section and a base section, and with a sleeve which has a coding means and is positively positioned in the sleeve section, the housing having a recess for a sealing ring in a transition region between the sleeve section and the base section, which forms an annulus by positioning the sleeve.
  • the present invention is based on the technical problem of modifying connectors of the type mentioned at the outset in a simple and cost-effective manner in such a way that an air and creepage distance of at least 2 mm is maintained, and thus the protection levels "ia” and "ib" in the hazardous area (IEC 60079-11) can be reached.
  • a first aspect of the present invention relates to a circular connector (1), which first comprises a housing (101) with a sleeve section (1011) and a base section (1013).
  • Preferred materials for the housing (101) are, for example, stainless steel 1.4404.
  • At least one current-carrying contact pin (103) is guided through the base section (1013) and protrudes freely into the sleeve section (1011).
  • This at least one contact pin (103) represents the male part of the circular connector (1), which is designed to be received in the female part of an (external) cable to be connected.
  • Preferably two or more contact pins (103) are provided.
  • the circular connector (1) further comprises an insulating element (105) in the base section (1013), which positively isolates the at least one current-carrying contact pin (103) from the base section (1013) and positions it in the base section (1013).
  • the insulating element (105) is preferably formed from a glass-like material. According to the invention, glass, glass ceramic or ceramic are used in particular. This makes the hermetic seal possible.
  • the expression "positively rigid insulated” means that the insulating element (105) completely surrounds the at least one current-carrying contact pin (103) and closes without gaps with the base section (1013).
  • the circular connector (1) comprises an insulating sleeve (107), which is positioned in a form-fitting manner in the sleeve section (1011) and connects with its end to the base section (1013).
  • the insulating sleeve (107) provides additional insulation between the sleeve section (1011) and the at least one current-carrying contact pin (103).
  • Preferred materials for the insulating sleeve (107) are polyether ether ketone (PEEK), polytetrafluoroethylene (PTFE; "Teflon”), silicones or other temperature-stable plastics. Alternatively, ceramic materials can also be used.
  • the expression “positively positioned” means that the insulating sleeve (107) terminates seamlessly with the sleeve section (1011).
  • the circular connector (1) is characterized in that the housing (101) has a recess (1015) in a transition region between the sleeve section (1011) and the base section (1013), which forms an annular space through the positioning of the insulating sleeve (107), so that an air and creepage distance (3) of at least 2 mm is formed between the at least one current-carrying contact pin (103) and the sleeve section (1011) due to the positioning of the insulating sleeve (107).
  • the recess (1015) provided according to the invention is filled with air and, together with the additionally provided insulating sleeve (107), forms the necessary structural requirements for the clearance and creepage distance of at least 2 mm. This clearance and creepage distance is required to meet the insulation distances according to IEC 60079-11 (explosion protection).
  • air-filled means that the recess (1015) provided according to the invention is not provided with a material or element, for example a seal, but remains empty and is therefore filled with the surrounding atmosphere, ie air.
  • the housing (101) has an inner diameter which is enlarged compared to the sleeve section (1011) and in which the insulating element (105) is arranged essentially flush with the rear surface of the circular connector (1). This is not formed up to the sleeve section (1011), but leaves a free space open, which is delimited on two sides by the housing (101) and on one side by the insulating element (105). This free space is then at least partially closed on its fourth side by introducing the insulating sleeve (107) into the housing (101) and forms the recess (1015) according to the invention.
  • the phrase "at least partially” means that the insulating sleeve (107) is not necessarily inserted into the sleeve section (1011) until it lies against the insulating element (105).
  • the insulating sleeve (107) will generally not touch the insulating element (105). Rather, an air gap is generally formed between the insulating sleeve (107) and the insulating element (105), but this can be very small.
  • the circular connector (1) according to the invention represents a hermetically sealed connector housing (male side) which, through the constructional measures according to the invention, in particular through the provision of the insulating sleeve (107) and the annular recess (1015), the approval for use in potentially explosive areas ( Protection levels "ia” and "ib") reached.
  • protection levels "ia” and "ib" Protection levels "ia" and "ib"
  • M12 the dimension of the dimension M12
  • the circular connector (1) according to the invention can be used to use M12 and smaller connectors in explosion-protected areas.
  • the circular connector (1) according to the invention has the further advantage that the potting (or bonding) according to the invention, which is filled with air, means that such a potting (or bonding) can be dispensed with.
  • the circular connector (1) according to the invention no longer has to prove that the potting is free of voids and that the adhesive surface forms an intimate connection between the insulating sleeve and the insulating element, so that the desired clearance and creepage distance of at least 2 mm is ensured.
  • the clearance and creepage distance (3) has a rectilinear portion (3d) and / or an angled portion (3a, 3b, 3c), each of which is at least 2 mm.
  • the second angled portion (3b) runs between the insulating element (105) and the interior of the insulating sleeve (107).
  • the insulating sleeve (107) does not touch the insulating element (105), so that an air gap is created between them.
  • the second angled portion (3b) runs as an air gap through the interior of the insulating sleeve (107).
  • the second angled portion (3b) runs as a creepage distance between them along the insulating element (105).
  • the third angled portion (3c) runs between the insulating element (105) and the insulating sleeve (107) as a creepage distance. This creepage distance runs only in the relatively small area, which corresponds to the thickness of the insulating sleeve (107).
  • the sum of the angular portion (3a, 3b, 3c) is greater than / equal to 2 mm.
  • the insulating element (105) is a glass-metal bushing, so that the circular connector (1) is hermetically sealed. Together with the base section (1013) and the at least one current-carrying contact pin (103), the insulating element (105) is a glass-metal composite. In addition to being hermetically sealed, the insulating element (105) is also chemically resistant and temperature-stable.
  • the invention provides that the operating temperature of the circular connector (1) is -55 ° C. to 260 ° C. This comparatively high operating temperature is achieved through the selection of the material for the insulating sleeve (107), for example PTFE, polyimide or silicones. It is preferred according to the invention if the operating temperature of the circular connector (1) is - 55 ° C to 180 ° C, in particular up to 150 ° C.
  • the circular connector (1) according to the invention corresponds to the dimensions for M12 connectors, particularly preferably dimensions for M12 connectors and smaller.
  • M16 With larger connectors such as M16, an air and creepage distance of 2 mm is basically known and can be achieved trivially. With smaller dimensions like M8 there is a significantly higher effort to achieve an air and Creepage distance of 2 mm is necessary, but in principle possible with the measures according to the invention.
  • the circular connector (1) forms the male part of a circular connector and can be positively and / or non-positively connected to a female part of an M12 circular connector.
  • Such female parts are known as female circular connectors (5) from the prior art and form standardized standard connections in many areas of electronics.
  • the (male) circular connector (1) according to the invention can thus be used universally with commercially available (female) connections.
  • the invention is independent of the connector coding used or the number of poles.
  • the base section (1013) of the circular connector (1) according to the invention is flange-shaped, so that it can be mechanically connected to housings of devices in a simple manner.
  • the circular connector (1) according to the invention is part of a vibration sensor.
  • the advantage here is that the use of the circular connector (1) according to the invention creates a cost-effective way of using M12 connectors even in potentially explosive areas.
  • the circular connector 1 is shown in one embodiment of the invention with four current-carrying contact pins 103, only three current-carrying contact pins 103 being recognizable by the illustration.
  • the housing 101 is divided into a sleeve section 1011 and a base section 1013, the sleeve section being directed in the direction of a female plug connector 5 to be connected and surrounding the contact pins 103 protruding freely into it in a protective manner.
  • the base section 1013 forms the base of the circular connector 1 and can, for example, be glued or welded on the device side or alternatively have a cable connection.
  • the current-carrying contact pins 103 are insulated from the base section 1013 by the insulating element 105. At the same time, the insulating element 105 takes over the exact positioning of the contact pins 103 within the circular connector 1.
  • the insulating element 105 is preferably made of a glass or a glass-ceramic.
  • an insulating sleeve 107 is introduced into the sleeve section 1011, which protrudes in the interior of the housing 101 up to the base section 1013, but does not necessarily have to terminate with the latter.
  • a recess (area with a larger inner diameter) is provided within the base section 1013 and, together with the insulating element 105, forms the basis for the recess 1015 according to the invention.
  • the recess 1015 according to the invention is formed when the insulating sleeve 107 is inserted into the sleeve section 1011 and thus at least partially forms the fourth side of the recess 1015. As already described above, this recess 1015 is filled with air.
  • a straight-line clearance and creepage distance 3d is formed in a direct line between the contact pin 103 and the base section 1013, and can take up a sufficiently large creepage distance of at least 2 mm due to the available installation space at the base of the circular connector 1.
  • the contact pins 103 are less than 2 mm away from the plug housing, which is often made of metal, due to the spatial constriction.
  • the required clearance and creepage distance of 2 mm is therefore not reached with plug connections (eg from M12) according to the state of the art.
  • the clearance and creepage distance is designed as an alternative to the straight-line clearance and creepage distance 3d as an angled portion 3a, 3b, 3c.
  • Figure 3 is the area around the recess 1015 according to the invention in greater detail (from Figure 1 ) to represent the angular portion 3a, 3b, 3c of the clearances and creepage distances.
  • the second angled portion 3b (shown here in dashed lines) runs between the insulating element 105 and the insulating sleeve 107 either as a creepage distance when the insulating sleeve 107 and the insulating element 105 touch, or as an air gap when the insulating sleeve 107 and the insulating element 105 do not touch.
  • the third angled portion 3c (shown here with dots), which runs as a creepage distance between the insulating element 105 and the insulating sleeve 107.
  • the first angled portion 3a adjoins more or less at a right angle (shown here in dash-dot lines).
  • This first angled portion 3a is shown in FIG Figure 3 an air gap from the insulating sleeve 107 through the recess 1015 to the housing 101, wherein the insulating sleeve 107 and the housing 101 do not touch.
  • the sum of the three angular portions 3a, 3b, 3c is at least 2 mm, so that the required clearance and creepage distance is maintained.
  • Figure 4 represents an insulating sleeve 107 in plan view and in section along the line A - A.
  • the insulating sleeve 107 has at one end a projection 1071 which rests on the free end of the sleeve section 1011 and supports this against a section 501 of a female connector 5 and isolated at the same time.
  • Figure 5 represents a conventional female connector 5. It has a base body which in its front part has a section 501 with a reduced diameter, which corresponds to the inside diameter of the circular connector 1 according to the invention, that is to say the inside diameter of the insulating sleeve 107.
  • a clamp fit is first achieved between the female connector 5 and the circular connector 1 according to the invention, which is then secured in the inserted state by an M12 union nut.
  • the current-carrying contact pins 103 of the circular connector 1 according to the invention rest in corresponding receiving sleeves 503 in the female connector 5, to which cable connections are connected.
  • the female connector 5 is usually connected to a corresponding cable.
  • Figure 6 is shown in section the inserted state between the circular connector 1 of the invention and the conventional female connector 5 according to the prior art
  • the circular connector 1 according to the invention has been described in particular in relation to the dimension M12 in a four-pole version.
  • the principle according to the invention of expanding the clearance and creepage distance 3 is independent of the number of poles and independent of the connector coding and can be extended to other connector dimensions and other geometrical arrangements.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Claims (9)

  1. Connecteur à fiche cylindrique (1), comprenant
    - un boîtier (101) avec une section douille (1011) et une section embase (1013),
    - au moins une broche de contact conductrice (103) guidée à travers la section embase (1013), qui pénètre librement dans la section douille (1011),
    - un élément isolant (105) dans la section embase (1013), qui isole l'au moins une broche de contact conductrice (103) par complémentarité de forme contre la section embase (1013) et la positionne dans la section embase (1013), et
    - une douille isolante (107), qui est positionnée par complémentarité de forme dans la section douille (1011),
    caractérisé en ce que le boîtier (101) présente dans une zone de transition entre la section douille (1011) et la section embase (1013) un évidement (1015), qui forme un espace annulaire par le positionnement de la douille isolante (107), de sorte qu'une distance d'isolement et ligne de fuite (3) d'au moins 2 mm est réalisée entre l'au moins une broche de contact conductrice (103) et le boîtier (101) par le positionnement de la douille isolante (107).
  2. Connecteur à fiche cylindrique (1) selon la revendication 1, dans lequel la distance d'isolement et ligne de fuite (3) présente une part rectiligne (3d) et/ou une part angulaire (3a, 3b, 3c), qui sont respectivement d'au moins 2 mm.
  3. Connecteur à fiche cylindrique (1) selon la revendication 2, dans lequel
    - la première part angulaire (3a) s'étend dans l'évidement (1015),
    - la deuxième part angulaire (3b) s'étend entre l'élément isolant (105) et l'espace intérieur de la douille isolante (107) et
    - la troisième part angulaire (3c) s'étend entre l'élément isolant (105) et la douille isolante (107).
  4. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 3, dans lequel l'élément isolant (105) est une traversée verre-métal, de sorte que le connecteur à fiche cylindrique (1) est réalisé hermétiquement étanche.
  5. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 4, dans lequel la température de service du connecteur à fiche cylindrique (1) est de - 55 °C à 260 °C.
  6. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 5, dans lequel le connecteur à fiche cylindrique (1) correspond aux dimensions du connecteur enfichable M12.
  7. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 6, dans lequel le connecteur à fiche cylindrique (1) forme la partie mâle d'une liaison à fiche cylindrique et peut être relié par complémentarité de forme et/ou par force à une partie femelle d'un connecteur à fiche cylindrique M12.
  8. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 7, dans lequel la section embase (1013) est réalisée en forme de bride.
  9. Connecteur à fiche cylindrique (1) selon l'une quelconque des revendications 1 à 8, dans lequel le connecteur à fiche cylindrique (1) fait partie d'un capteur d'oscillations.
EP18020066.9A 2017-02-17 2018-02-16 Connecteur à fiche cylindrique Active EP3364504B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017001493.0A DE102017001493B4 (de) 2017-02-17 2017-02-17 Rundsteckverbinder

Publications (2)

Publication Number Publication Date
EP3364504A1 EP3364504A1 (fr) 2018-08-22
EP3364504B1 true EP3364504B1 (fr) 2020-04-29

Family

ID=61231037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18020066.9A Active EP3364504B1 (fr) 2017-02-17 2018-02-16 Connecteur à fiche cylindrique

Country Status (2)

Country Link
EP (1) EP3364504B1 (fr)
DE (1) DE102017001493B4 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019002847A1 (de) * 2019-04-17 2020-10-22 Mbda Deutschland Gmbh Abreißbare elektrische Verbindungsanordnung für ein oder an einem Vehikel, insbesondere Flügkörper, Flugkörper und Verfahren zum Starten eines Flugkörpers
DE102022130669A1 (de) * 2022-11-21 2024-05-23 Endress+Hauser SE+Co. KG Einschraubbares Verbindungselement zur Ex-i und Ex-d konformen Durchführung von elektrischen Signalen
FR3147444B1 (fr) * 2023-03-30 2026-01-30 Safran Electrical Components Connecteur electrique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146054A (en) 1961-05-03 1964-08-25 Pyle National Co Connector with indexing means
US3597716A (en) 1969-05-29 1971-08-03 Itt Hermetically sealed connector
DE4404260A1 (de) * 1994-02-10 1995-08-17 W W Fischer Sa Elektrische Steckverbindung, insbesondere für die Medizintechnik
DE10117976A1 (de) 2001-01-25 2002-08-22 Siemens Ag Einrichtung zur Durchführung von elektrischen Leitungen durch die Wandung eines Kraftstoffbehälters
DE10122816B4 (de) 2001-05-11 2012-02-02 Escha Bauelemente Gmbh Stecker einer Steckverbindung
DE102014106355A1 (de) 2014-05-07 2015-11-12 Amphenol-Tuchel Electronics Gmbh Gedichteter Rundsteckverbinder
DE102014112658B4 (de) 2014-09-03 2018-05-30 FILTEC GmbH Filtertechnologie für die Elektronikindustrie Stecker für eine Steckverbindung für Datenleitungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3364504A1 (fr) 2018-08-22
DE102017001493B4 (de) 2023-06-01
DE102017001493A1 (de) 2018-08-23

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