EP3364504A1 - Round plug connector - Google Patents

Round plug connector Download PDF

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Publication number
EP3364504A1
EP3364504A1 EP18020066.9A EP18020066A EP3364504A1 EP 3364504 A1 EP3364504 A1 EP 3364504A1 EP 18020066 A EP18020066 A EP 18020066A EP 3364504 A1 EP3364504 A1 EP 3364504A1
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EP
European Patent Office
Prior art keywords
circular connector
sleeve
insulating
connector
insulating sleeve
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.)
Granted
Application number
EP18020066.9A
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German (de)
French (fr)
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EP3364504B1 (en
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
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Application filed by Bruel and Kjaer Vibro GmbH filed Critical Bruel and Kjaer Vibro GmbH
Publication of EP3364504A1 publication Critical patent/EP3364504A1/en
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Publication of EP3364504B1 publication Critical patent/EP3364504B1/en
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    • 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 gap and creepage distance of at least 2 mm is formed in order to achieve a high protection class for potentially explosive areas.
  • Circular connectors for potentially explosive areas are known per se from the prior art.
  • For use in potentially explosive atmospheres see IEC 60079-11
  • minimum values for clearances and creepage distances between intrinsically safe circuits and grounded metal parts are required for device protection due to intrinsic safety.
  • an air gap and creepage distance of at least 2.0 mm applies (see IEC 60079-11, Chapter 6.3.1.1, Table 5).
  • IEC 60079 specifies the designation and testing of intrinsically safe equipment intended for use in potentially explosive atmospheres and related equipment intended for connection to intrinsically safe circuits leading into such atmospheres.
  • IEC 61076 describes M12 circular connectors 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 connector (eg MILC-5015, or MIL-DTL-5015) is used, which have a corresponding air and creepage distance, or it is completely dispensed with a connector and the connection of the corresponding cable realized directly in the device ,
  • physically larger connector eg MILC-5015, or MIL-DTL-5015
  • M12 or smaller connectors which provide a standard for data and signal transmission and power supply, is therefore often limited to areas that are not potentially explosive. However, this prevents the cost-effective use of standardized cables for connecting technical devices.
  • the technical object of the invention to modify connectors of the type mentioned in a simple manner and cost so that an air gap and creepage distance of at least 2 mm is maintained and thereby the protection levels "ia” and "ib” can be reached in the hazardous area (IEC 60079-11).
  • a first aspect of the present invention relates to a circular connector (1) comprising first a housing (101) having a sleeve portion (1011) and a socket portion (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 projects 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.
  • the circular connector (1) further comprises an insulating member (105) in the socket portion (1013) which positively isolates the at least one live contact pin (103) against the socket portion (1013) and positions it in the socket portion (1013).
  • the insulating member (105) is preferably formed of a vitreous material. In particular, glass, glass ceramic or ceramic are used according to the invention. As a result, the hermetic tightness is made possible.
  • the circular connector (1) comprises an insulating sleeve (107), which is positively positioned in the sleeve portion (1011) and connects with its one end to the base portion (1013).
  • the insulating sleeve (107) provides additional insulation between the sleeve portion (1011) and the at least one live contact pin (103).
  • Preferred materials for the insulating sleeve (107) are polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE; "Teflon”), silicones or other thermally stable plastics. Alternatively, ceramic materials can be used.
  • the circular connector (1) is characterized in that the housing (101) has a recess (1015) in a transition region between sleeve section (1011) and base section (1013), which forms an annular space by positioning the insulating sleeve (107). so that an air gap 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) by the positioning of the insulating sleeve (107).
  • the inventively provided recess (1015) is filled with air and forms together with the additionally provided insulating sleeve (107) the necessary structural conditions for the creepage distance and clearance of at least 2 mm. This clearance and creepage distance is required to meet the insulation distances according to IEC 60079-11 (Ex protection).
  • air-filled is understood here to mean that the recess (1015) provided according to the invention is not provided with a material or an element, for example a seal, but remains empty and therefore filled with the surrounding atmosphere, ie air.
  • the housing (101) has, in the area of the base section (1013), an inner diameter which is widened in relation to the sleeve section (1011), in which the insulating element (105) is arranged essentially flush with the rear face of the circular connector (1). In this case, this is not formed up to the sleeve portion (1011) zoom, but leaves a space that is bounded on two sides by the housing (101) and on one side of the insulating member (105). This free space is then at least partially closed by the introduction of the insulating sleeve (107) into the housing (101) on its fourth side and forms the recess (1015) according to the invention.
  • the phrase "at least partially” in this context means that the insulating sleeve (107) is not necessarily inserted into the sleeve portion (1011) until it abuts the insulating member (105).
  • the insulating sleeve (107) will not touch the insulating member (105) as a rule. Rather, an air gap between insulating sleeve (107) and insulating member (105) is formed as a rule, but this can be very small.
  • the round plug connector (1) according to the invention represents a hermetically sealed plug housing (male side), which by the constructive measures according to the invention, in particular by the provision of the insulating sleeve (107) and the annular space recess (1015), the approval for use in potentially explosive atmospheres ( Levels of protection "ia” and "ib").
  • the plug-in connections of the dimension M12 which are standard in the field of sensor technology and automation, can therefore be used in explosion-protected areas by the circular connector (1) according to the invention.
  • connectors with the dimension M12 and smaller in explosion-proof areas can be used by the circular connector (1) according to the invention.
  • the circular connector (1) according to the invention has the further advantage that by the recess (1015) according to the invention, which is filled with air, on such a casting (or bonding) can be waived.
  • the creepage distance (3) has a rectilinear portion (3d) and / or an angled portion (3a, 3b, 3c), each of which amounts to at least 2 mm.
  • the splitting of the creepage distance and the creepage distance (3) into an angled portion (3a, 3b, 3c), whereby the first angled portion (3a) extends in the recess (1015) provided according to the invention, comprising an air-filled annular cavity represents.
  • the phrase "in the recess (1015)” means that, depending on whether or not the insulating sleeve (107) contacts the housing (101), the first angular portion (3a) creeps along the insulating sleeve (107) at the edge of the recess (1015) to the housing (101) (touched) or as an air gap through the recess (1015) of the insulating sleeve (107) to the housing (101) (not touched).
  • the second angled portion (3b) extends between the insulating element (105) and the interior of the insulating sleeve (107).
  • the insulating sleeve (107) does not contact the insulating member (105) so that an air gap is formed therebetween.
  • the second angled portion (3b) extends as an air gap through the interior of the insulating sleeve (107).
  • the second angular portion (3b) extends as a creeping distance between them along the insulating member (105).
  • the third angular portion (3c) extends between the insulating member (105) and the insulating sleeve (107) as a creeping 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 inventively 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) constitutes a glass-metal composite. In addition to the hermetically sealed property, the insulating element (105) is also chemically resistant and thermally stable.
  • the operating temperature of the circular connector (1) is -55 ° C. to 260 ° C. This comparatively high operating temperature is achieved by the selection of the material for the insulating sleeve (107), for example PTFE, polyimide or silicones. It is inventively preferred if the operating temperature of the circular connector (1) - 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, especially preferred dimensions for M12 connectors and smaller.
  • M12 connectors especially preferred dimensions for M12 connectors and smaller.
  • an air gap and creepage distance of 2 mm is basically known and trivial.
  • M8 is a significantly higher cost to achieve an air and Creep of 2 mm necessary, but basically possible with the inventive measures.
  • the circular connector (1) forms the male part of a circular connector and is positively and / or non-positively connectable with a female part of an M12 circular connector.
  • Such female parts are known in the art as female circular connectors (5) and form standard standardized connectors in many fields of electronics.
  • the inventive (male) circular connector (1) is thus universally applicable with commercial (female) connections.
  • the invention is independent of the connector coding or the number of poles used.
  • the base portion (1013) of the circular connector (1) according to the invention is designed flange-like, so that it can be mechanically connected in a simple manner with housings of devices.
  • 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 to use M12 connectors in hazardous areas can.
  • FIG. 1 the circular plug connector 1 according to the invention is shown in an embodiment of the invention with four current-carrying contact pins 103, wherein only three current-carrying contact pins 103 can be seen by the illustration.
  • the housing 101 is divided into a sleeve portion 1011 and a base portion 1013, wherein the sleeve portion is directed in the direction of a female connector to be connected 5 and the freely projecting into it contact pins 103 protective surrounds.
  • the base portion 1013 forms the base of the circular connector 1 and may for example be glued or welded on the device side or alternatively have a cable connection.
  • the current-carrying contact pins 103 are isolated by the insulating member 105 relative to the base portion 1013. At the same time the insulating member 105 takes over the exact positioning of the contact pins 103 within the circular connector 1.
  • the insulating member 105 is preferably made of a glass or a glass ceramic.
  • an insulating sleeve 107 is introduced according to the invention, which projects in the interior of the housing 101 to the base portion 1013, but not necessarily complete with this.
  • a recess (larger inner diameter portion) is provided, which together with the insulating member 105 forms the basis for the recess 1015 of the present invention.
  • the recess 1015 according to the invention is formed when the insulating sleeve 107 is inserted into the sleeve portion 1011 and thus at least partially forms the fourth side of the recess 1015.
  • This recess 1015 is, as already described above, filled with air.
  • this area is shown in detail.
  • a straight air and creepage distance 3d is formed in a direct line, which can take a sufficiently large creepage distance of at least 2 mm by the available 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 space constraints.
  • the required clearance and creepage distance of 2 mm is therefore undershot in plug connections (eg of M12) according to the prior art.
  • the creepage distance and creepage distance as an alternative to the straight-line clearance and creepage distance 3d as an angled portion 3a, 3b, 3c is configured.
  • FIG. 3 is the area around the recess 1015 according to the invention in more detail (from FIG. 1 ) for displaying the angled portion 3a, 3b, 3c of the creepage and clearance distances.
  • the second angled portion 3b (shown in phantom) extends between the insulating member 105 and insulating 107 either as a creepage distance, when the insulating sleeve 107 and 105 contact the insulating element, or as an air gap when insulating sleeve 107 and insulating 105 do not touch.
  • the third angled portion 3c connects thereto (shown dotted here), which runs as a creeping distance between the insulating member 105 and insulating sleeve 107. More or less at right angles to the first angled portion 3a connects (dash-dotted lines shown here).
  • This first angled portion 3a is shown in FIG FIG. 3 an air gap from the insulating sleeve 107 through the recess 1015 to the housing 101, wherein the insulating sleeve 107 and 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.
  • FIG. 4 The insulation sleeve 107 has at its one end a projection 1071 which rests on the free end of the sleeve portion 1011 and this is supported against a portion 501 of a female connector 5 and at the same time isolated.
  • FIG. 5 It has a base body having in its front part a reduced diameter portion 501, which corresponds to the inner diameter of the circular connector 1 according to the invention, that is, the inner diameter of the insulating sleeve 107.
  • a clamping seat 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, connect to the cable connections.
  • the female connector 5 is usually connected to a corresponding cable.
  • FIG. 6 is shown in section the inserted state between the circular connector 1 according to the invention and the conventional female connector 5 according to the prior art
  • the circular connector 1 has been described in particular with respect to the measure M12 in a four-pole version.
  • the inventive principle of extending the creepage distance and creepage distance 3 is independent of the number of poles and independent of the plug coding and can be extended to other plug dimensions and other geometric arrangements.

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Die vorliegende Erfindung betrifft ein einen Rundsteckverbinder (1), umfassend
- ein Gehäuse (101) mit einem Hülsenabschnitt (1011) und einem Sockelabschnitt (1013),
-zumindest einen durch den Sockelabschnitt (1013) geführten stromführenden Kontaktstift (103), der frei in den Hülsenabschnitt (1011) hineinragt,
-ein Isolierelement (105) in dem Sockelabschnitt (1013), das den zumindest einen stromführenden Kontaktstift (103) formschlüssig gegen den Sockelabschnitt (1013) isoliert und in dem Sockelabschnitt (1013) positioniert, und
- eine Isolierhülse (107), die formschlüssig in dem Hülsenabschnitt (1011) positioniert ist.The present invention relates to a circular connector (1) comprising
a housing (101) having a sleeve portion (1011) and a base portion (1013),
at least one current-carrying contact pin (103) guided through the base section (1013) and projecting freely into the sleeve section (1011),
an insulating member (105) in the socket portion (1013) which positively isolates the at least one current-carrying contact pin (103) against the socket portion (1013) and positions it in the socket portion (1013), and
- An insulating sleeve (107) which is positively positioned in the sleeve portion (1011).

Dieser Rundsteckverbinder (1) zeichnet sich dadurch aus, dass das Gehäuse (101) in einem Übergangsbereich zwischen Hülsenabschnitt (1011) und Sockelabschnitt (1013) eine Ausnehmung (1015) aufweist, die durch die Positionierung der Isolierhülse (107) einen Ringraum bildet, so dass zwischen dem zumindest einen stromführenden Kontaktstift (103) und dem Hülsenabschnitt (1011) durch die Positionierung der Isolierhülse (107) eine Luft- und Kriechstrecke (3) von mindestens 2 mm ausgebildet ist.

Figure imgaf001
This circular connector (1) is characterized in that the housing (101) in a transition region between the sleeve portion (1011) and base portion (1013) has a recess (1015) which forms an annular space by the positioning of the insulating sleeve (107), so in that an air gap and creepage distance (3) of at least 2 mm is formed between the at least one current-carrying contact pin (103) and the sleeve portion (1011) through the positioning of the insulating sleeve (107).
Figure imgaf001

Description

Die vorliegende Erfindung bezieht sich auf einen Rundsteckverbinder, bei dem zum Erreichen einer hohen Schutzklasse für explosionsgefährdete Bereiche eine Luft- und Kriechstrecke von mindestens 2 mm ausgebildet ist.The present invention relates to a circular connector in which an air gap and creepage distance of at least 2 mm is formed in order to achieve a high protection class for potentially explosive areas.

Rundsteckverbinder für explosionsgefährdete Bereiche sind aus dem Stand der Technik an sich bekannt. Für den Einsatz in explosionsgefährdeten Bereichen (vgl. IEC 60079-11) werden für den Geräteschutz durch Eigensicherheit Mindestwerte für Luft- und Kriechstrecken zwischen eigensicheren Stromkreisen und geerdeten Metallteilen verlangt. So gilt beispielsweise für die Schutzniveaus "ia" und "ib" bei Spannungswerten unter 30 V eine Luft- und Kriechstrecke von mindestens 2,0 mm (vgl. IEC 60079-11, Kapitel 6.3.1.1, Tabelle 5). In IEC 60079 wird die Bestimmung für die Konstruktion und Prüfung eigensicherer Betriebsmittel, die für die Verwendung in explosionsfähigen Atmosphären bestimmt sind, sowie für zugehörige Betriebsmittel festgelegt, die für den Anschluss an eigensichere Stromkreise, die in solche Atmosphären hineinführen, vorgesehen sind.Circular connectors for potentially explosive areas are known per se from the prior art. For use in potentially explosive atmospheres (see IEC 60079-11) minimum values for clearances and creepage distances between intrinsically safe circuits and grounded metal parts are required for device protection due to intrinsic safety. For example, for the protection levels "ia" and "ib" at voltage values below 30 V, an air gap and creepage distance of at least 2.0 mm applies (see IEC 60079-11, Chapter 6.3.1.1, Table 5). IEC 60079 specifies the designation and testing of intrinsically safe equipment intended for use in potentially explosive atmospheres and related equipment intended for connection to intrinsically safe circuits leading into such atmospheres.

Bei Steckverbindern mit dem Maß M12 (vgl. IEC 61076-2-101) und kleiner liegen die Pole (Pins) weniger als 2 mm von dem Steckergehäuse entfernt, so dass die vorstehend genannte Norm nicht eingehalten werden kann und zusätzliche Maßnahmen zum Erreichen der geforderten Luft- und Kriechstrecke erforderlich sind, sobald als Material für das Gehäuse bzw. das Gewinde Metall zum Einsatz kommt. IEC 61076 beschreibt M12 Rundsteckverbinder, die industriell für die Prozesskontrolle verwendet werden. Diese Rundsteckverbinder bestehen aus fixierten, freien Verbindern mit einer Schraubbefestigung. Die männlichen Verbinder haben typischerweise runde Kontakte mit Durchmessern von 0,6 mm, 0,76 mm, 0,8 mm und 1,0 mm.For M12 size connectors (see IEC 61076-2-101) and smaller, the poles (pins) are less than 2 mm away from the connector housing, so that the above standard can not be met and additional measures to achieve the required Clearance and creepage distances are required as soon as metal is used as the material for the housing or the thread. IEC 61076 describes M12 circular connectors 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.

Nach dem Stand der Technik werden in der Regel bei Anwendungen in explosionsgefährdeten Bereichen Steckverbinder mit dem Maß M12 nicht eingesetzt. Vielmehr werden entweder physikalisch größere Stecker (z.B. MILC-5015, bzw. MIL-DTL-5015) verwendet, die eine entsprechende Luft- und Kriechstrecke aufweisen, oder es wird auf eine Steckverbindung komplett verzichtet und die Anbindung des entsprechenden Kabels direkt in der Vorrichtung realisiert.According to the state of the art connectors with the dimension M12 are generally not used in applications in potentially explosive areas. Rather, either physically larger connector (eg MILC-5015, or MIL-DTL-5015) is used, which have a corresponding air and creepage distance, or it is completely dispensed with a connector and the connection of the corresponding cable realized directly in the device ,

Ferner ist ein Sensor der Firma Meggitt Sensing Systems bekannt, der eine M12 Verbindung und Ex-Zulassung aufweist (MEGGIT 786-500-M12-IS). Die Trennabstände und Kriechstrecken werden bei diesem Sensor offensichtlich durch einen Verguss und/oder feste Isolierung auf 0,5 mm bzw. 0,7 mm reduziert. Der große Nachteil bei der Realisierung mit Hilfe von Verguss ist, dass jedes gefertigte Teil einer Stückprüfung unterzogen werden muss, das ist aufwendig und damit teuer.Furthermore, a sensor of the company Meggitt Sensing Systems is known, which has an M12 connection and Ex approval (MEGGIT 786-500-M12-IS). The separation distances and creepage distances are evidently reduced to 0.5 mm or 0.7 mm in this sensor by encapsulation and / or solid insulation. The major disadvantage of the realization with the help of potting is that every manufactured part must be subjected to a routine test, which is complicated and therefore expensive.

Der Einsatz von Steckverbindern mit dem Maß M12 oder kleiner, die einen Standard für die Daten- und Signalübertragung sowie der Leistungsversorgung darstellen, wird daher häufig auf Bereiche beschränkt, die nicht explosionsgefährdet sind. Damit wird jedoch die kostengünstige Verwendung von genormten Kabeln zum Anschluss technischer Geräte verhindert.The use of M12 or smaller connectors, which provide a standard for data and signal transmission and power supply, is therefore often limited to areas that are not potentially explosive. However, this prevents the cost-effective use of standardized cables for connecting technical devices.

Aus dem Stand der Technik sind darüber hinaus Stecker im Maß M12 mit sogenannter S-Kodierung bekannt (z.B. der Firmen Phönix Contact oder Escha), welche die nötigen Luft- und Kriechstrecken aufweisen, allerdings können diese bei einer maximalen Anwendungstemperatur von 90 °C höchstens die Schutzklasse IP69K erreichen. Diese Schutzklasse ist jedoch für viele Anwendungen aus dem Bereich der Sensorik und Automatisierung nicht ausreichend.From the state of the art beyond plug in size M12 with so-called S-coding are known (eg the company Phönix Contact or Escha), which have the necessary air and creepage distances, but these can at a maximum application temperature of 90 ° C at most Reach protection class IP69K. However, this protection class is not sufficient for many applications in the field of sensor technology and automation.

Angesichts der Nachteile des Standes der Technik liegt der vorliegenden Erfindung die technische Aufgabe zugrunde, Steckverbinder der eingangs genannten Art in einfacher Weise und kostengünstig so zu modifizieren, dass eine Luft- und Kriechstrecke von mindestens 2 mm eingehalten wird und dadurch die Schutzniveaus "ia" und "ib" im explosionsgefährdeten Bereich (IEC 60079-11) erreichbar sind.In view of the disadvantages of the prior art, the present invention, the technical object of the invention to modify connectors of the type mentioned in a simple manner and cost so that an air gap and creepage distance of at least 2 mm is maintained and thereby the protection levels "ia" and "ib" can be reached in the hazardous area (IEC 60079-11).

Diese Aufgabe wird in der vorliegenden Erfindung durch einen Rundsteckverbinder (1) gelöst, umfassend

  • ein Gehäuse (101) mit einem Hülsenabschnitt (1011) und einem Sockelabschnitt (1013),
  • zumindest einen durch den Sockelabschnitt (1013) geführten stromführenden Kontaktstift (103), der frei in den Hülsenabschnitt (1011) hineinragt,
  • ein Isolierelement (105) in dem Sockelabschnitt (1013), das den zumindest einen stromführenden Kontaktstift (103) formschlüssig gegen den Sockelabschnitt (1013) isoliert und in dem Sockelabschnitt (1013) positioniert, und
  • eine Isolierhülse (107), die formschlüssig in dem Hülsenabschnitt (1011) positioniert ist,
dadurch gekennzeichnet, dass das Gehäuse (101) in einem Übergangsbereich zwischen Hülsenabschnitt (1011) und Sockelabschnitt (1013) eine Ausnehmung (1015) aufweist, die durch die Positionierung der Isolierhülse (107) einen Ringraum bildet, so dass zwischen dem zumindest einen stromführenden Kontaktstift (103) und dem Hülsenabschnitt (1011) durch die Positionierung der Isolierhülse (107) eine Luft- und Kriechstrecke (3) von mindestens 2 mm ausgebildet ist.This object is achieved in the present invention by a circular connector (1) comprising
  • a housing (101) having a sleeve portion (1011) and a base portion (1013),
  • at least one current-carrying contact pin (103) guided through the base section (1013) and projecting freely into the sleeve section (1011),
  • an insulating member (105) in the socket portion (1013) which positively isolates the at least one current-carrying contact pin (103) against the socket portion (1013) and positions it in the socket portion (1013), and
  • an insulating sleeve (107) which is positively positioned in the sleeve portion (1011),
characterized in that the housing (101) in a transition region between the sleeve portion (1011) and base portion (1013) has a recess (1015) which forms an annular space by the positioning of the insulating sleeve (107), so that between the at least one current-carrying contact pin (103) and the sleeve portion (1011) by the positioning of the insulating sleeve (107) an air gap and creepage distance (3) of at least 2 mm is formed.

Durch die Modifikation eines gattungsgemäßen Rundsteckverbinders mit den erfindungsgemäßen Maßnahmen ist es möglich, eine Luft- und Kriechstrecke (3) von mindestens 2 mm auszubilden und gleichzeitig eine hermetisch dichte Durchführung für den Einsatz des Rundsteckverbinders (1) in explosionsgefährdeten Bereichen zu realisieren.By modifying a generic circular connector with the measures according to the invention, it is possible to form an air gap and creepage distance (3) of at least 2 mm and at the same time to realize a hermetically sealed bushing for use of the circular connector (1) in potentially explosive areas.

Nachfolgend wird die Erfindung im Detail beschrieben.The invention will be described in detail below.

Ein erster Aspekt der vorliegenden Erfindung bezieht sich auf einen Rundsteckverbinder (1), der zunächst ein Gehäuse (101) mit einem Hülsenabschnitt (1011) und einen Sockelabschnitt (1013) umfasst. Bevorzugte Materialien für das Gehäuse (101) sind beispielsweise Edelstahl 1.4404.A first aspect of the present invention relates to a circular connector (1) comprising first a housing (101) having a sleeve portion (1011) and a socket portion (1013). Preferred materials for the housing (101) are, for example, stainless steel 1.4404.

Durch den Sockelabschnitt (1013) wird zumindest ein stromführender Kontaktstift (103) geführt, der frei in den Hülsenabschnitt (1011) hinein ragt. Dieser zumindest eine Kontaktstift (103) stellt den männlichen Teil des Rundsteckverbinders (1) dar, der zur Aufnahme in den weiblichen Teil eines anzuschließenden (externen) Kabels ausgelegt ist. Vorzugsweise sind 2 oder mehr Kontaktstifte (103) vorgesehen.At least one current-carrying contact pin (103) is guided through the base section (1013) and projects 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, 2 or more contact pins (103) are provided.

Der Rundsteckverbinder (1) umfasst ferner ein Isolierelement (105) in dem Sockelabschnitt (1013), das den zumindest einen stromführenden Kontaktstift (103) formschlüssig gegen den Sockelabschnitt (1013) isoliert und diesen in dem Sockelabschnitt (1013) positioniert. Das Isolierelement (105) ist vorzugsweise aus einem glasartigen Material gebildet. Erfindungsgemäß finden insbesondere Glas, Glaskeramik oder Keramik Anwendung. Hierdurch wird die hermetische Dichtigkeit möglich gemacht.The circular connector (1) further comprises an insulating member (105) in the socket portion (1013) which positively isolates the at least one live contact pin (103) against the socket portion (1013) and positions it in the socket portion (1013). The insulating member (105) is preferably formed of a vitreous material. In particular, glass, glass ceramic or ceramic are used according to the invention. As a result, the hermetic tightness is made possible.

Der Ausdruck "formschlüssig (...) isoliert" bedeutet im Rahmen der vorliegenden Beschreibung, dass das Isolierelement (105) den zumindest einen stromführenden Kontaktstift (103) vollständig umgibt und lückenlos mit dem Sockelabschnitt (1013) abschließt.The expression "positively isolated (...)" in the context of the present description means that the insulating element (105) completely surrounds the at least one current-carrying contact pin (103) and terminates completely with the base section (1013).

Schließlich umfasst der erfindungsgemäße Rundsteckverbinder (1) eine Isolierhülse (107), die formschlüssig in dem Hülsenabschnitt (1011) positioniert ist und mit ihrem einen Ende an den Sockelabschnitt (1013) anschließt. Die Isolierhülse (107) stellt eine zusätzliche Isolierung zwischen dem Hülsenabschnitt (1011) und dem zumindest einen stromführenden Kontaktstift (103) dar. Bevorzugte Materialien für die Isolierhülse (107) sind Polyetheretherketon (PEEK), Polytetrafluorethylen (PTFE; "Teflon"), Silikone oder andere temperaturstabile Kunststoffe. Alternativ können auch keramische Werkstoffe eingesetzt werden.Finally, the circular connector (1) according to the invention comprises an insulating sleeve (107), which is positively positioned in the sleeve portion (1011) and connects with its one end to the base portion (1013). The insulating sleeve (107) provides additional insulation between the sleeve portion (1011) and the at least one live contact pin (103). Preferred materials for the insulating sleeve (107) are polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE; "Teflon"), silicones or other thermally stable plastics. Alternatively, ceramic materials can be used.

Der Ausdruck "formschlüssig (...) positioniert" bedeutet im Rahmen der vorliegenden Beschreibung, dass die Isolierhülse (107) lückenlos mit dem Hülsenabschnitt (1011) abschließt.The term "positively (...) positioned" means in the context of the present description that the insulating sleeve (107) closes completely with the sleeve portion (1011).

Der erfindungsgemäße Rundsteckverbinder (1) zeichnet sich dadurch aus, dass das Gehäuse (101) in einem Übergangsbereich zwischen Hülsenabschnitt (1011) und Sockelabschnitt (1013) eine Ausnehmung (1015) aufweist, die durch die Positionierung der Isolierhülse (107) einen Ringraum bildet, so dass zwischen dem zumindest einen stromführenden Kontaktstift (103) und dem Hülsenabschnitt (1011) durch die Positionierung der Isolierhülse (107) eine Luft- und Kriechstrecke (3) von mindestens 2 mm ausgebildet ist.The circular connector (1) according to the invention is characterized in that the housing (101) has a recess (1015) in a transition region between sleeve section (1011) and base section (1013), which forms an annular space by positioning the insulating sleeve (107). so that an air gap 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) by the positioning of the insulating sleeve (107).

Die erfindungsgemäß vorgesehene Ausnehmung (1015) ist luftgefüllt und bildet zusammen mit der zusätzlich vorgesehenen Isolierhülse (107) die notwendigen baulichen Voraussetzungen für die Luft- und Kriechstrecke von mindestens 2 mm. Diese Luft- und Kriechstrecke wird benötigt, um die Isolationsstrecken nach der IEC 60079-11 (Ex-Schutz) zu erfüllen.The inventively provided recess (1015) is filled with air and forms together with the additionally provided insulating sleeve (107) the necessary structural conditions for the creepage distance and clearance of at least 2 mm. This clearance and creepage distance is required to meet the insulation distances according to IEC 60079-11 (Ex protection).

Unter "luftgefüllt" wird vorliegende verstanden, dass die erfindungsgemäß vorgesehene Ausnehmung (1015) nicht mit einem Material oder einem Element, beispielsweise einer Dichtung, versehen wird, sondern leer bleibt und daher mit der umgebenden Atmosphäre, d.h. Luft, gefüllt ist.The term "air-filled" is understood here to mean that the recess (1015) provided according to the invention is not provided with a material or an element, for example a seal, but remains empty and therefore filled with the surrounding atmosphere, ie air.

Das Gehäuse (101) weist im Bereich des Sockelabschnitts (1013) einen gegenüber dem Hülsenabschnitt (1011) erweiterten Innendurchmesser auf, in dem im Wesentlichen bündig mit der hinteren Fläche des Rundsteckverbinders (1) das Isolierelement (105) angeordnet wird. Dabei ist dieses nicht bis an den Hülsenabschnitt (1011) heran ausgebildet, sondern lässt einen Freiraum offen, der an zwei Seiten von dem Gehäuse (101) und an einer Seite von dem Isolierelement (105) begrenzt wird. Dieser Freiraum wird dann durch das Einbringen der Isolierhülse (107) in das Gehäuse (101) an seiner vierten Seite zumindest teilweise geschlossen und bildet die erfindungsgemäße Ausnehmung (1015).The housing (101) has, in the area of the base section (1013), an inner diameter which is widened in relation to the sleeve section (1011), in which the insulating element (105) is arranged essentially flush with the rear face of the circular connector (1). In this case, this is not formed up to the sleeve portion (1011) zoom, but leaves a space that is bounded on two sides by the housing (101) and on one side of the insulating member (105). This free space is then at least partially closed by the introduction of the insulating sleeve (107) into the housing (101) on its fourth side and forms the recess (1015) according to the invention.

Die Formulierung "zumindest teilweise" bedeutet in diesem Zusammenhang, dass die Isolierhülse (107) nicht zwingend bis zum Anliegen an dem Isolierelement (105) in den Hülsenabschnitt (1011) eingeführt wird. Die Isolierhülse (107) wird das Isolierelement (105) in der Regel nicht berühren. Es wird vielmehr in der Regel ein Luftspalt zwischen Isolierhülse (107) und Isolierelement (105) gebildet, der jedoch sehr klein sein kann.The phrase "at least partially" in this context means that the insulating sleeve (107) is not necessarily inserted into the sleeve portion (1011) until it abuts the insulating member (105). The insulating sleeve (107) will not touch the insulating member (105) as a rule. Rather, an air gap between insulating sleeve (107) and insulating member (105) is formed as a rule, but this can be very small.

Der erfindungsgemäße Rundsteckverbinder (1) stellt ein hermetisch dichtes Steckergehäuse (männliche Seite) dar, das durch die erfindungsgemäßen konstruktiven Maßnahmen, insbesondere durch das Vorsehen der Isolierhülse (107) und der ringraumförmigen Ausnehmung (1015), die Zulassung für den Einsatz in explosionsgefährdeten Bereichen (Schutzniveaus "ia" und "ib") erreicht. Dadurch wird im Vergleich zum Stand der Technik eine wenig aufwändige und damit kostengünstige Verkleinerung der Steckverbindung bei gleichzeitiger Beibehaltung ihrer Robustheit ermöglicht. Die im Bereich der Sensorik und Automatisierung als Standard verbreiteten Steckverbindungen mit dem Maß M12 können durch den erfindungsgemäßen Rundsteckverbinder (1) daher in explosionsgeschützten Bereichen zum Einsatz kommen. Insbesondere können durch den erfindungsgemäßen Rundsteckverbinder (1) Steckverbindungen mit dem Maß M12 und kleiner in explosionsgeschützten Bereichen zum Einsatz kommen.The round plug connector (1) according to the invention represents a hermetically sealed plug housing (male side), which by the constructive measures according to the invention, in particular by the provision of the insulating sleeve (107) and the annular space recess (1015), the approval for use in potentially explosive atmospheres ( Levels of protection "ia" and "ib"). As a result, in comparison with the prior art, a less complicated and thus cost-effective reduction of the plug-in connection while at the same time maintaining its robustness is made possible. The plug-in connections of the dimension M12, which are standard in the field of sensor technology and automation, can therefore be used in explosion-protected areas by the circular connector (1) according to the invention. In particular, connectors with the dimension M12 and smaller in explosion-proof areas can be used by the circular connector (1) according to the invention.

Die Realisierung dieses Einsatzes wird insbesondere ohne eine Einschränkung des Verschmutzungsgrades erreicht, wie der beispielsweise in der Norm IEC 60079-11, Anhang F, beschrieben ist. Es gibt grundsätzlich die Möglichkeit, die Isolierstrecken zu verkleinern, wenn bestimmte Anforderungen an Materialien (Kriechstromzahl (CTI) und Verschmutzungsgrad) erfüllt werden. Bei einer Luft- und Kriechstecke von mind. 2 mm gibt es bezüglich Material und Verschmutzung jedoch keine solchen Einschränkungen mehr.The implementation of this use is achieved in particular without a restriction of the degree of contamination, as described for example in the standard IEC 60079-11, Annex F. In principle, there is the possibility of reducing the insulation distances if certain requirements for materials (leakage current index (CTI) and degree of soiling) are met. At an air and creepage of at least 2 mm However, there are no such restrictions regarding material and pollution.

Gegenüber gattungsgemäßen Rundsteckverbindern, bei welchen die Isolierstrecke durch Verguss (oder Verklebung) realisiert wird, weist der erfindungsgemäße Rundsteckverbinder (1) den weiteren Vorteil auf, dass durch die erfindungsgemäße Ausnehmung (1015), welche luftgefüllt ist, auf einen solchen Verguss (oder Verklebung) verzichtet werden kann. Damit entfällt für den erfindungsgemäßen Rundsteckverbinder (1) die Nachweispflicht, dass der Verguss lunkerfrei ist und die Klebefläche eine innige Verbindung zwischen Isolierhülse und Isolierelement bildet, so dass die gewünschte Luft- und Kriechstecke von mind. 2 mm sichergestellt ist.Compared with generic circular connectors, in which the insulating section is realized by potting (or bonding), the circular connector (1) according to the invention has the further advantage that by the recess (1015) according to the invention, which is filled with air, on such a casting (or bonding) can be waived. This eliminates the proof obligation for the circular connector (1) according to the invention that the potting is void-free and the adhesive surface forms an intimate connection between insulating sleeve and insulating element, so that the desired air and creepage of at least 2 mm is ensured.

In einer Weiterbildung der Erfindung weist die Luft- und Kriechstrecke (3) einen geradlinigen Anteil (3d) und/oder einen winkligen Anteil (3a, 3b, 3c) auf, die jeweils mindestens 2 mm betragen. Durch diese erfindungsgemäße konstruktive Maßnahme wird auch bei kleineren Stecker-Maßen die erforderliche Luft- und Kriechstrecke (3) von mindestens 2 mm sichergestellt, d.h. bei Stecker-Maßen von M12 und kleiner.In one development of the invention, the creepage distance (3) has a rectilinear portion (3d) and / or an angled portion (3a, 3b, 3c), each of which amounts to at least 2 mm. By this constructive measure according to the invention the required clearance and creepage distance (3) of at least 2 mm is ensured even with smaller connector dimensions, i. with plug dimensions of M12 and smaller.

Diese Weiterbildung kann vorteilhafterweise so ausgeführt sein, dass

  • der erste winklige Anteil (3a) in der Ausnehmung (1015) verläuft,
  • der zweite winklige Anteil (3b) zwischen Isolierelement (105) und dem Innenraum der Isolierhülse (107) verläuft und
  • der dritte winklige Anteil (3c) zwischen Isolierelement (105) und Isolierhülse (107) verläuft.
This development can advantageously be designed so that
  • the first angled portion (3a) extends in the recess (1015),
  • the second angular portion (3b) extends between the insulating element (105) and the interior of the insulating sleeve (107) and
  • the third angular portion (3c) between the insulating element (105) and insulating sleeve (107) extends.

Besonders ist bei dieser Weiterbildung das Aufteilen der Luft- und Kriechstrecke (3) in einen winkligen Anteil (3a, 3b, 3c), wobei der erste winklige Anteil (3a) in der erfindungsgemäß vorgesehenen Ausnehmung (1015) verläuft, die einen luftgefüllten ringförmigen Hohlraum darstellt. Die Formulierung "in der (...) Ausnehmung (1015) verläuft" bedeutet dabei, dass abhängig davon, ob die Isolierhülse (107) das Gehäuse (101) berührt oder nicht, der erste winklige Anteil (3a) als Kriechstrecke entlang der Isolierhülse (107) am Rande der Ausnehmung (1015) zum Gehäuse (101) (berührt) oder als Luftstrecke durch die Ausnehmung (1015) von der Isolierhülse (107) zum Gehäuse (101) (berührt nicht) verläuft.Particularly in this development, the splitting of the creepage distance and the creepage distance (3) into an angled portion (3a, 3b, 3c), whereby the first angled portion (3a) extends in the recess (1015) provided according to the invention, comprising an air-filled annular cavity represents. The phrase "in the recess (1015)" means that, depending on whether or not the insulating sleeve (107) contacts the housing (101), the first angular portion (3a) creeps along the insulating sleeve (107) at the edge of the recess (1015) to the housing (101) (touched) or as an air gap through the recess (1015) of the insulating sleeve (107) to the housing (101) (not touched).

Zudem verläuft der zweite winklige Anteil (3b) zwischen Isolierelement (105) und dem Innenraum der Isolierhülse (107). In der Regel berührt gemäß der vorliegenden Erfindung die Isolierhülse (107) das Isolierelement (105) nicht, so dass ein Luftspalt zwischen diesen entsteht. In diesem Fall verläuft der zweite winklige Anteil (3b) als Luftstrecke durch den Innenraum der Isolierhülse (107). Für den Fall, dass sich Isolierhülse (107) und Isolierelement (105) berühren, verläuft der zweite winklige Anteil (3b) als Kriechstrecke zwischen diesen entlang des Isolierelements (105).In addition, the second angled portion (3b) extends between the insulating element (105) and the interior of the insulating sleeve (107). In general, according to the present invention, the insulating sleeve (107) does not contact the insulating member (105) so that an air gap is formed therebetween. In this case, the second angled portion (3b) extends as an air gap through the interior of the insulating sleeve (107). In the event that insulating sleeve (107) and insulating member (105) touch, the second angular portion (3b) extends as a creeping distance between them along the insulating member (105).

Ferner verläuft der dritte winklige Anteil (3c) zwischen dem Isolierelement (105) und der Isolierhülse (107) als Kriechstrecke. Diese Kriechstrecke verläuft nur in dem relativ kleinen Bereich, welcher der Dicke der Isolierhülse (107) entspricht.Further, the third angular portion (3c) extends between the insulating member (105) and the insulating sleeve (107) as a creeping distance. This creepage distance runs only in the relatively small area, which corresponds to the thickness of the insulating sleeve (107).

Die Summe des winkligen Anteils (3a, 3b, 3c) ist dabei erfindungsgemäß größer/gleich 2 mm.The sum of the angular portion (3a, 3b, 3c) is inventively greater than / equal to 2 mm.

Es hat sich als vorteilhaft herausgestellt, wenn das Isolierelement (105) eine Glas-Metall-Durchführung ist, so dass der Rundsteckverbinder (1) hermetisch dicht ausgebildet ist. Zusammen mit dem Sockelabschnitt (1013) und dem zumindest einen stromführenden Kontaktstift (103) stellt das Isolierelement (105) einen Glas-Metall-Verbund dar. Neben der Eigenschaft hermetisch dicht ist das Isolierelement (105) auch chemisch resistent und temperaturstabil.It has proved to be advantageous if 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) constitutes a glass-metal composite. In addition to the hermetically sealed property, the insulating element (105) is also chemically resistant and thermally stable.

Für das Erreichen einer im Vergleich zum Stand der Technik erweiterten Anforderung an die Umweltbedingungen ist erfindungsgemäß vorgesehen, dass die Einsatztemperatur des Rundsteckverbinders (1) - 55 °C bis 260 °C beträgt. Diese vergleichsweise hohe Einsatztemperatur wird durch die Auswahl des Materials für die Isolierhülse (107), beispielsweise PTFE, Polyimid oder Silikone, erreicht. Es ist erfindungsgemäß bevorzugt, wenn die Einsatztemperatur des Rundsteckverbinders (1) - 55 °C bis 180 °C, insbesondere bis 150 °C beträgt.In order to achieve an extended environmental requirement compared to the prior art, it is provided according to the invention that the operating temperature of the circular connector (1) is -55 ° C. to 260 ° C. This comparatively high operating temperature is achieved by the selection of the material for the insulating sleeve (107), for example PTFE, polyimide or silicones. It is inventively preferred if the operating temperature of the circular connector (1) - 55 ° C to 180 ° C, in particular up to 150 ° C.

Es ist insbesondere bevorzugt, wenn der erfindungsgemäße Rundsteckverbinder (1) den Maßen für M12 Steckverbinder entspricht, speziell bevorzugt Maßen für M12 Steckverbinder und kleiner. Bei größeren Steckverbindern wie z.B. M16 ist eine Luft- und Kriechstecke von 2 mm grundsätzlich bekannt und trivial zu erreichen. Bei kleineren Maßen wie M8 ist ein deutlich höherer Aufwand zum Erreichen einer Luft- und Kriechstecke von 2 mm notwendig, grundsätzlich aber mit den erfindungsgemäßen Maßnahmen möglich.It is particularly preferred if the circular connector (1) according to the invention corresponds to the dimensions for M12 connectors, especially preferred dimensions for M12 connectors and smaller. For larger connectors such as M16, an air gap and creepage distance of 2 mm is basically known and trivial. For smaller dimensions such as M8 is a significantly higher cost to achieve an air and Creep of 2 mm necessary, but basically possible with the inventive measures.

In einer Ausführungsform der Erfindung bildet der Rundsteckverbinder (1) den männlichen Teil einer Rundsteckverbindung und ist mit einem weiblichen Teil eines M12 Rundsteckverbinders formschlüssig und/oder kraftschlüssig verbindbar. Solche weiblichen Teile sind als weibliche Rundsteckverbinder (5) aus dem Stand der Technik bekannt und bilden genormte Standard-Anschlüsse in vielen Gebieten der Elektronik. Der erfindungsgemäße (männliche) Rundsteckverbinder (1) ist somit mit handelsüblichen (weiblichen) Anschlüssen universell einsetzbar. Dabei ist die Erfindung unabhängig von der verwendeten Steckerkodierung oder der Polzahl.In one embodiment of the invention, the circular connector (1) forms the male part of a circular connector and is positively and / or non-positively connectable with a female part of an M12 circular connector. Such female parts are known in the art as female circular connectors (5) and form standard standardized connectors in many fields of electronics. The inventive (male) circular connector (1) is thus universally applicable with commercial (female) connections. The invention is independent of the connector coding or the number of poles used.

In einer Weiterbildung ist der Sockelabschnitt (1013) des erfindungsgemäßen Rundsteckverbinders (1) flanschartig ausgebildet, so dass dieser in einfacher Art und Weise mit Gehäusen von Geräten mechanisch verbunden werden kann.In a development, the base portion (1013) of the circular connector (1) according to the invention is designed flange-like, so that it can be mechanically connected in a simple manner with housings of devices.

In einer speziellen Ausführungsform ist der erfindungsgemäße Rundsteckverbinder (1) Teil eines Schwingungsaufnehmers. Der Vorteil dabei ist, dass die Verwendung des erfindungsgemäßen Rundsteckverbinders (1) eine kostengünstige Möglichkeit schafft, M12 Steckverbinder auch in explosionsgefährdeten Bereichen einsetzen zu können.In a specific embodiment, 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 to use M12 connectors in hazardous areas can.

Weitere Ziele, Merkmale, Vorteile und Anwendungsmöglichkeiten ergeben sich aus der nachfolgenden Beschreibung von die Erfindung nicht einschränkenden Ausführungsbeispielen anhand der Figuren. Dabei bilden alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, auch unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbeziehung. Es zeigen:

Fig. 1:
eine schematische Schnittdarstellung des erfindungsgemäßen Rundsteckverbinders 1 in einer Ausführungsform der Erfindung,
Fig. 2:
eine erste Detailansicht des in Fig. 1 gezeigten erfindungsgemäßen Rundsteckverbinders 1,
Fig. 3
eine zweite Detailansicht des in Fig. 1 gezeigten erfindungsgemäßen Rundsteckverbinders 1,
Fig. 4:
eine schematische Darstellung einer Isolierhülse 107 in einer Ausführungsform der Erfindung,
Fig. 5:
einen weiblichen Steckverbinder 5 (Standard) zur Verbindung mit dem erfindungsgemäßen Rundsteckverbinder 1, und
Fig. 6:
den in Fig. 1 dargestellten erfindungsgemäßen Rundsteckverbinder 1 in gestecktem Zustand mit dem in Fig. 5 dargestellten weiblichen Steckverbinder 5.
Other objects, features, advantages and applications will become apparent from the following description of the invention not limiting embodiments with reference to FIGS. All described and / or illustrated features alone or in any combination form the subject matter of the invention, regardless of their combination in the claims or their dependency. Show it:
Fig. 1:
a schematic sectional view of the circular connector 1 according to the invention in an embodiment of the invention,
Fig. 2:
a first detailed view of the in Fig. 1 shown circular connector 1 according to the invention,
Fig. 3
a second detail view of the in Fig. 1 shown circular connector 1 according to the invention,
4:
a schematic representation of an insulating sleeve 107 in an embodiment of the invention,
Fig. 5:
a female connector 5 (standard) for connection to the circular connector 1 according to the invention, and
Fig. 6:
the in Fig. 1 illustrated circular connector 1 according to the invention in the inserted state with the in Fig. 5 shown female connector 5.

In Figur 1 ist der erfindungsgemäße Rundsteckverbinder 1 in einer Ausführungsform der Erfindung mit vier stromführenden Kontaktstiften 103 dargestellt, wobei durch die Darstellung nur drei stromführende Kontaktstifte 103 zu erkennen sind. Das Gehäuse 101 teilt sich in einen Hülsenabschnitt 1011 und einen Sockelabschnitt 1013 auf, wobei der Hülsenabschnitt in Richtung eines zu verbindenden weiblichen Steckverbinders 5 gerichtet ist und die frei in ihn hineinragenden Kontaktstifte 103 schützend umgibt. Der Sockelabschnitt 1013 bildet die Basis des Rundsteckverbinders 1 und kann beispielsweise geräteseitig verklebt oder verschweißt sein oder alternativ einen Kabelanschluss besitzen. Die stromführenden Kontaktstifte 103 werden durch das Isolierelement 105 gegenüber dem Sockelabschnitt 1013 isoliert. Gleichzeitig übernimmt das Isolierelement 105 die exakte Positionierung der Kontaktstifte 103 innerhalb des Rundsteckverbinders 1. Das Isolierelement 105 ist vorzugsweise aus einem Glas oder einer Glas-Keramik gefertigt.In FIG. 1 the circular plug connector 1 according to the invention is shown in an embodiment of the invention with four current-carrying contact pins 103, wherein only three current-carrying contact pins 103 can be seen by the illustration. The housing 101 is divided into a sleeve portion 1011 and a base portion 1013, wherein the sleeve portion is directed in the direction of a female connector to be connected 5 and the freely projecting into it contact pins 103 protective surrounds. The base portion 1013 forms the base of the circular connector 1 and may for example be glued or welded on the device side or alternatively have a cable connection. The current-carrying contact pins 103 are isolated by the insulating member 105 relative to the base portion 1013. At the same time the insulating member 105 takes over the exact positioning of the contact pins 103 within the circular connector 1. The insulating member 105 is preferably made of a glass or a glass ceramic.

In den Hülsenabschnitt 1011 ist erfindungsgemäß eine Isolierhülse 107 eingebracht, die im Innern des Gehäuses 101 bis an den Sockelabschnitt 1013 ragt, aber nicht zwingend mit diesem abschließen muss. Innerhalb des Sockelabschnitts 1013 ist ein Rücksprung (Bereich mit größerem Innendurchmesser) vorgesehen, der zusammen mit dem Isolierelement 105 die Grundlage für die erfindungsgemäße Ausnehmung 1015 bildet. Die erfindungsgemäße Ausnehmung 1015 wird gebildet, wenn die Isolierhülse 107 in den Hülsenabschnitt 1011 eingeführt ist und damit zumindest teilweise die vierte Seite der Ausnehmung 1015 bildet. Diese Ausnehmung 1015 ist, wie vorstehend bereits beschrieben, luftgefüllt.In the sleeve portion 1011 an insulating sleeve 107 is introduced according to the invention, which projects in the interior of the housing 101 to the base portion 1013, but not necessarily complete with this. Within the base portion 1013, a recess (larger inner diameter portion) is provided, which together with the insulating member 105 forms the basis for the recess 1015 of the present invention. The recess 1015 according to the invention is formed when the insulating sleeve 107 is inserted into the sleeve portion 1011 and thus at least partially forms the fourth side of the recess 1015. This recess 1015 is, as already described above, filled with air.

In Figur 2 ist dieser Bereich im Detail dargestellt. Zwischen dem Kontaktstift 103 und dem Sockelabschnitt 1013 ist in direkter Linie eine geradlinige Luft- und Kriechstrecke 3d ausgebildet, welche durch den vorhandenen Bauraum an der Basis des Rundsteckverbinders 1 eine ausreichend große Kriechstrecke von mindestens 2 mm einnehmen kann.In FIG. 2 this area is shown in detail. Between the contact pin 103 and the base portion 1013 a straight air and creepage distance 3d is formed in a direct line, which can take a sufficiently large creepage distance of at least 2 mm by the available space at the base of the circular connector 1.

Gewöhnlicherweise liegen bei Steckverbindern nach dem Stand der Technik, welche das Maß M12 (oder kleiner) aufweisen, die Kontaktstifte 103 aufgrund der räumlichen Enge weniger als 2 mm von dem Steckgehäuse entfernt, welches häufig aus Metall hergestellt ist. Die erforderliche Luft- und Kriechstrecke von 2 mm wird daher bei Steckverbindungen (z.B. von M12) nach dem Stand der Technik unterschritten. In Figur 2 ist dargestellt, dass erfindungsgemäß die Luft- und Kriechstrecke alternativ zu der geradlinigen Luft- und Kriechstrecke 3d als ein winkliger Anteil 3a, 3b, 3c ausgestaltet ist.Ordinarily, in prior art connectors having the dimension M12 (or smaller), the contact pins 103 are less than 2 mm away from the plug housing, which is often made of metal, due to the space constraints. The required clearance and creepage distance of 2 mm is therefore undershot in plug connections (eg of M12) according to the prior art. In FIG. 2 is shown that according to the invention, the creepage distance and creepage distance as an alternative to the straight-line clearance and creepage distance 3d as an angled portion 3a, 3b, 3c is configured.

In Figur 3 ist der Bereich um die erfindungsgemäße Ausnehmung 1015 herum im größeren Detail (aus Figur 1) zur Darstellung des winkligen Anteils 3a, 3b, 3c der Luft- und Kriechstrecken abgebildet. Der zweite winklige Anteil 3b (hier gestrichelt dargestellt) verläuft zwischen Isolierelement 105 und Isolierhülse 107 entweder als Kriechstrecke, wenn sich Isolierhülse 107 und Isolierelement 105 berühren, oder als Luftstrecke, wenn sich Isolierhülse 107 und Isolierelement 105 nicht berühren. Erfindungsgemäß schließt sich daran in der dargestellten Ausführungsform der dritte winklige Anteil 3c an (hier gepunktet dargestellt), der als Kriechstrecke zwischen Isolierelement 105 und Isolierhülse 107 verläuft. Mehr oder weniger im rechten Winkel schließt sich der erste winklige Anteil 3a an (hier strichgepunktet dargestellt). Dieser erste winklige Anteil 3a ist in der Darstellung der Figur 3 eine Luftstrecke von der Isolierhülse 107 durch die Ausnehmung 1015 zum Gehäuse 101, wobei sich Isolierhülse 107 und Gehäuse 101 nicht berühren. Die Summe der drei winkligen Anteile 3a, 3b, 3c beträgt mindestens 2 mm, so dass die erforderliche Luft- und Kriechstrecke eingehalten wird.In FIG. 3 is the area around the recess 1015 according to the invention in more detail (from FIG. 1 ) for displaying the angled portion 3a, 3b, 3c of the creepage and clearance distances. The second angled portion 3b (shown in phantom) extends between the insulating member 105 and insulating 107 either as a creepage distance, when the insulating sleeve 107 and 105 contact the insulating element, or as an air gap when insulating sleeve 107 and insulating 105 do not touch. According to the invention in the illustrated embodiment, the third angled portion 3c connects thereto (shown dotted here), which runs as a creeping distance between the insulating member 105 and insulating sleeve 107. More or less at right angles to the first angled portion 3a connects (dash-dotted lines shown here). This first angled portion 3a is shown in FIG FIG. 3 an air gap from the insulating sleeve 107 through the recess 1015 to the housing 101, wherein the insulating sleeve 107 and 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.

Figur 4 stellt eine Isolierhülse 107 in der Draufsicht und im Schnitt entlang der Linie A - A dar. Die Isolierhülse 107 weist an ihrem einen Ende eine Auskragung 1071 auf, die am freien Ende des Hülsenabschnitts 1011 aufliegt und diesen gegen einen Abschnitt 501 eines weiblichen Steckverbinders 5 abstützt und gleichzeitig isoliert. FIG. 4 The insulation sleeve 107 has at its one end a projection 1071 which rests on the free end of the sleeve portion 1011 and this is supported against a portion 501 of a female connector 5 and at the same time isolated.

Figur 5 stellt einen herkömmlichen weiblichen Steckverbinder 5 dar. Er weist einen Grundkörper auf, der in seinem vorderen Teil einen im Durchmesser verringerten Abschnitt 501 aufweist, welcher dem Innendurchmesser des erfindungsgemäßen Rundsteckverbinders 1, das heißt dem Innendurchmesser der Isolierhülse 107 entspricht. Beim Einführen wird zwischen dem weiblichen Steckverbinder 5 und dem erfindungsgemäßen Rundsteckverbinder 1 zunächst ein Klemmsitz erreicht, der anschließend im gesteckten Zustand durch eine M12 Überwurfmutter gesichert wird. Die stromführenden Kontaktstifte 103 des erfindungsgemäßen Rundsteckverbinders 1 ruhen in entsprechenden Aufnahmehülsen 503 in dem weiblichen Steckverbinder 5, an die sich Kabelanschlüsse anschließen. Der weibliche Steckverbinder 5 ist üblicherweise an ein entsprechendes Kabel angeschlossen. FIG. 5 It has a base body having in its front part a reduced diameter portion 501, which corresponds to the inner diameter of the circular connector 1 according to the invention, that is, the inner diameter of the insulating sleeve 107. When inserting a clamping seat 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, connect to the cable connections. The female connector 5 is usually connected to a corresponding cable.

In Figur 6 ist im Schnitt der gesteckte Zustand zwischen dem erfindungsgemäßen Rundsteckverbinder 1 und dem herkömmlichen weiblichen Steckverbinder 5 nach dem Stand der Technik dargestelltIn FIG. 6 is shown in section the inserted state between the circular connector 1 according to the invention and the conventional female connector 5 according to the prior art

Der erfindungsgemäße Rundsteckverbinder 1 wurde insbesondere in Bezug auf das Maß M12 in einer vierpoligen Ausführung beschrieben. Das erfindungsgemäße Prinzip der Erweiterung der Luft- und Kriechstrecke 3 ist jedoch unabhängig von der Polzahl und unabhängig von der Steckerkodierung und kann auf andere Steckermaße und andere geometrische Anordnungen ausgeweitet werden.The circular connector 1 according to the invention has been described in particular with respect to the measure M12 in a four-pole version. The inventive principle of extending the creepage distance and creepage distance 3, however, is independent of the number of poles and independent of the plug coding and can be extended to other plug dimensions and other geometric arrangements.

Bezugszeichenreference numeral

11
Rundsteckverbindercircular Connectors
101101
Gehäusecasing
10111011
Hülsenabschnitt des Gehäuses 101Sleeve portion of the housing 101st
10131013
Sockelabschnitt des Gehäuses 101Base portion of the housing 101
10151015
Ausnehmungrecess
103103
Kontaktstiftpin
105105
Isolierelementinsulating
107107
Isolierhülseinsulating sleeve
10711071
Auskragung der Isolierhülse 107Projection of the insulating sleeve 107th
33
Luft- und KriechstreckeAir and creepage distance
3a3a
erster winkliger Anteil der Luft- und Kriechstrecke 3first angled portion of the creepage distance 3
3b3b
zweiter winkliger Anteil der Luft- und Kriechstrecke 3second angled portion of the air and creepage distance 3
3c3c
dritter winkliger Anteil der Luft- und Kriechstrecke 3third angled portion of the creepage and clearance 3
3d3d
geradliniger Anteil der Luft- und Kriechstrecke 3rectilinear portion of the creepage and clearance 3
55
weiblicher Steckverbinderfemale connector
501501
im Durchmesser verringerter Abschnitt des weiblichen Steckverbinders 5reduced diameter portion of the female connector 5
503503
Aufnahmehülsereceiving sleeve

Claims (9)

Rundsteckverbinder (1), umfassend - ein Gehäuse (101) mit einem Hülsenabschnitt (1011) und einem Sockelabschnitt (1013), - zumindest einen durch den Sockelabschnitt (1013) geführten stromführenden Kontaktstift (103), der frei in den Hülsenabschnitt (1011) hineinragt, - ein Isolierelement (105) in dem Sockelabschnitt (1013), das den zumindest einen stromführenden Kontaktstift (103) formschlüssig gegen den Sockelabschnitt (1013) isoliert und in dem Sockelabschnitt (1013) positioniert, und - eine Isolierhülse (107), die formschlüssig in dem Hülsenabschnitt (1011) positioniert ist, dadurch gekennzeichnet, dass das Gehäuse (101) in einem Übergangsbereich zwischen Hülsenabschnitt (1011) und Sockelabschnitt (1013) eine Ausnehmung (1015) aufweist, die durch die Positionierung der Isolierhülse (107) einen Ringraum bildet, so dass zwischen dem zumindest einen stromführenden Kontaktstift (103) und dem Gehäuse (101) durch die Positionierung der Isolierhülse (107) eine Luft- und Kriechstrecke (3) von mindestens 2 mm ausgebildet ist.Circular connector (1) comprising a housing (101) having a sleeve portion (1011) and a base portion (1013), at least one current-carrying contact pin (103) guided through the base section (1013) and projecting freely into the sleeve section (1011), - An insulating member (105) in the base portion (1013), the at least one current-carrying contact pin (103) positively against the base portion (1013) isolated and positioned in the base portion (1013), and - An insulating sleeve (107) which is positively positioned in the sleeve portion (1011), characterized in that the housing (101) in a transition region between the sleeve portion (1011) and base portion (1013) has a recess (1015) which forms an annular space by the positioning of the insulating sleeve (107), so that between the at least one current-carrying contact pin (103) and the housing (101) by the positioning of the insulating sleeve (107) an air gap and creepage distance (3) of at least 2 mm is formed. Rundsteckverbinder (1) nach Anspruch 1, wobei die Luft- und Kriechstrecke (3) einen geradlinigen Anteil (3d) und/oder einen winkligen Anteil (3a, 3b, 3c) aufweist, die jeweils mindestens 2 mm betragen.Circular connector (1) according to claim 1, wherein the air and creepage distance (3) has a rectilinear portion (3d) and / or an angled portion (3a, 3b, 3c), each amounting to at least 2 mm. Rundsteckverbinder (1) nach Anspruch 2, wobei - der erste winklige Anteil (3a) in der Ausnehmung (1015) verläuft, - der zweite winklige Anteil (3b) zwischen Isolierelement (105) und dem Innenraum der Isolierhülse (107) verläuft und - der dritte winklige Anteil (3c) zwischen Isolierelement (105) und Isolierhülse (107) verläuft. Circular connector (1) according to claim 2, wherein the first angled portion (3a) extends in the recess (1015), - The second angular portion (3b) between the insulating element (105) and the interior of the insulating sleeve (107) extends and - The third angular portion (3c) between the insulating element (105) and insulating sleeve (107) extends. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 3, wobei das Isolierelement (105) eine Glas-Metall-Durchführung ist, so dass der Rundsteckverbinder (1) hermetisch dicht ausgebildet ist.Circular connector (1) according to one of claims 1 to 3, wherein the insulating member (105) is a glass-metal passage, so that the circular connector (1) is hermetically sealed. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 4, wobei die Einsatztemperatur des Rundsteckverbinders (1) - 55 °C bis 260 °C beträgt.Circular connector (1) according to one of claims 1 to 4, wherein the operating temperature of the circular connector (1) - 55 ° C to 260 ° C. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 5, wobei der Rundsteckverbinder (1) den Maßen für M12 Steckverbinder entspricht.Circular connector (1) according to one of claims 1 to 5, wherein the circular connector (1) corresponds to the dimensions for M12 connector. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 6, wobei der Rundsteckverbinder (1) den männlichen Teil einer Rundsteckverbindung bildet und mit einem weiblichen Teil eines M12 Rundsteckverbinders formschlüssig und/oder kraftschlüssig verbindbar ist.Circular connector (1) according to one of claims 1 to 6, wherein the circular connector (1) forms the male part of a circular connector and is positively and / or non-positively connected to a female part of an M12 circular connector. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 7, wobei der Sockelabschnitt (1013) flanschartig ausgebildet ist.Circular connector (1) according to one of claims 1 to 7, wherein the base portion (1013) is flange-shaped. Rundsteckverbinder (1) nach einem der Ansprüche 1 bis 8, wobei der Rundsteckverbinder (1) Teil eines Schwingungsaufnehmers ist.Circular connector (1) according to one of claims 1 to 8, wherein the circular connector (1) is part of a vibration sensor.
EP18020066.9A 2017-02-17 2018-02-16 Round plug connector Active EP3364504B1 (en)

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DE102019002847A1 (en) * 2019-04-17 2020-10-22 Mbda Deutschland Gmbh Breakable electrical connection arrangement for or on a vehicle, in particular a wing, a missile and a method for launching a missile
DE102022130669A1 (en) 2022-11-21 2024-05-23 Endress+Hauser SE+Co. KG Screw-in connection element for Ex-i and Ex-d compliant transmission of electrical signals

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DE4404260A1 (en) * 1994-02-10 1995-08-17 W W Fischer Sa Electric plug connector

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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
DE10117976A1 (en) 2001-01-25 2002-08-22 Siemens Ag Device for the passage of electrical lines through the wall of a fuel tank
DE10122816B4 (en) 2001-05-11 2012-02-02 Escha Bauelemente Gmbh Plug of a plug connection
DE202014010351U1 (en) 2014-05-07 2015-04-29 Amphenol-Tuchel Electronics Gmbh Sealed circular connector
DE102014112658B4 (en) 2014-09-03 2018-05-30 FILTEC GmbH Filtertechnologie für die Elektronikindustrie Plug for a connector for data cables

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DE4404260A1 (en) * 1994-02-10 1995-08-17 W W Fischer Sa Electric plug connector

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