DE102017001493B4 - circular connector - Google Patents

Abstract

Circular connector (1), comprising
- a housing (101) with a sleeve section (1011) and a base section (1013),
- at least one contact pin (103) guided through the base section (1013) and protruding freely into the sleeve section (1011),
- an insulating element (105) in the base section (1013), which insulates the at least one contact pin (103) from the base section (1013) and is positioned in the base section (1013), and
- an insulating sleeve (107) which is positioned in a form-fitting manner in the sleeve section (1011), characterized in that the housing (101) has an air-filled recess (1015) in a transition area between the sleeve section (1011) and the base section (1013) which is the positioning of the insulating sleeve (107) forms an annular space, so that a clearance and creepage distance (3) of at least 2 mm is formed between the at least one contact pin (103) and the housing (101) due to the positioning of the insulating sleeve (107).

Description

The present invention relates to a circular connector in which a clearance 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 hazardous areas (cf. IEC 60079-11), minimum values for clearance and creepage distances between intrinsically safe circuits and grounded metal parts are required for device protection through intrinsic safety. For example, a clearance and creepage distance of at least 2.0 mm applies to protection levels "ia" and "ib" for 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 associated equipment intended for connection to intrinsically safe circuits leading into such atmospheres.

In the case of connectors with the dimension M12 (cf. IEC 61076-2-101) and smaller, the poles (pins) are less than 2 mm away from the connector housing, so that the above standard cannot be complied with 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 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 0.6mm, 0.76mm, 0.8mm and 1.0mm.

According to the state of the art, connectors with the dimension M12 are generally not used in applications in potentially explosive atmospheres. 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 dispensed with and the connection of the corresponding cable is implemented directly in the device .

A sensor from Meggitt Sensing Systems is also known, which has an M12 connection and Ex approval (MEGGIT 786-500-M12-IS). With this sensor, the separation distances and creepage distances are obviously reduced to 0.5 mm or 0.7 mm by means of encapsulation and/or solid insulation. The major disadvantage of using potting is that every manufactured part has to be subjected to a routine test, which is time-consuming and therefore expensive.

U.S. 2005/0101185 A1 relates to a device for leading electrical lines through the wall of a fuel tank, with a steel support being connected to the wall of the fuel tank in a materially bonded manner. Contacts are inserted through the carrier. The contacts have a glass or ceramic coating. It is therefore almost impossible for fuel vapors to escape from the fuel tank.

US 3,146,054A describes a reversible key assembly for use with line connectors comprising a connector housing, a polarization adapter and a locking nut, the connector housing having a bore formed therein and containing a plurality of notches circumferentially spaced at one end of the housing, the adapter having a sleeve insertable into the housing and including external key means which engages notches in the housing at different angular orientations of the adapter relative to the housing, the adapter having internal groove means for engaging the key means in a mating socket wherein the housing has an opening formed therein and the adapter has an indicia on its peripheral surface in correspondence with the opening to identify the relative angular orientation therebetween, and wherein the locking nut is engagable with one end of the housing and with the Adapter is engaged to lock the adapter in a fixed position.

US 3,597,716A refers to a hermetically sealed electrical connector consisting of a plurality of contacts interconnected by a conductive plate. The contacts are connected to the conductive plate and a pair of sealing elements made of a vitreous material and arranged on either side of the conductive plate. The assembly is mounted in a connector housing and fired so that the sealing elements are fused around the conductive plate and to the housing, forming a hermetic seal. Contacts that are not connected to the conductive plate can also be sealed with the sealing elements. The result is a hermetically sealed connector with sufficient rigidity and strength to prevent unwanted physical contact between tweaking of the elements mounted in the connector housing.

DE 20 2014 010 351 U1 discloses a circular connector comprising a metal housing with a cylindrically shaped, hollow receiving section for receiving a matching plastic contact insert with a cylindrically shaped holding and sealing section, the inner wall in the region of the receiving section being designed with at least one annular, circumferential latching element for sealing engagement in the wall of the Holding section and wherein the metallic housing has an insertion opening for inserting the contact insert against a stop, wherein the contact insert rests against the stop with a front ring section when it is inserted into its intended position and the latching elements and engage in a sealing manner and the ring section arranged on the front side of the inner wall in the region of the stop with a radial wall section and an axial wall section of the inner wall arranged transversely thereto in the region of the stop bears against the contact insert.

DE 10 2014 112 658 A1 relates to a plug for a plug-in connection for data lines with an electrically conductive plug sleeve and an insertion opening surrounded by the sleeve wall and receiving a mating connector part, the bottom of which is formed by an end face of an electrically insulating contact carrier fitted into the sleeve and having one or more contact pins, wherein an insulating sleeve projecting beyond the end face of the sleeve extends into the insertion opening in the electrically conductive sleeve wall in such a way that their inner surfaces merge flush into one another. According to the invention, the connector sleeve has a first sleeve area that accommodates the mating connector with an inner diameter that corresponds to the outer diameter of the mating connector and a second sleeve area that essentially accommodates the contact carrier and has an enlarged diameter, with the contact carrier having an annular recess starting from the end face and extending into one of the insulating sleeves forming, the creepage resistance increasing insulating sleeve is used with an inner diameter equal to the inner diameter of the connector sleeve and a length reaching over the end face of the contact carrier.

DE 101 22 816 A1 relates to a plug of a plug-in connection with an electrically conductive sleeve and an electrically insulating contact carrier fitted into the sleeve, the end face of which is associated with one or more contacts and forms the bottom of an insertion opening for a mating connector part surrounded by the sleeve wall. A cuff is proposed which is formed onto the edge of the end face and extends over the surface of the electrically conductive sleeve wall.

The use of connectors with dimensions M12 or smaller, which represent 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. However, this prevents the cost-effective use of standardized cables for connecting technical devices.

The state of the art also includes M12 plugs with so-called S-coding (e.g. from Phönix Contact or Escha), which have the necessary clearances and creepage distances, but at a maximum application temperature of 90 °C they can only achieve protection class IP69K. However, this protection class is not sufficient for many applications in the field of sensor technology and automation.

In view of the disadvantages of the prior art, the present invention is based on the technical task of modifying connectors of the type mentioned in a simple and cost-effective manner in such a way that a clearance 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).

• - ein Gehäuse (101) mit einem Hülsenabschnitt (1011) und einem Sockelabschnitt (1013),
• - zumindest einen durch den Sockelabschnitt (1013) geführten Kontaktstift (103), der frei in den Hülsenabschnitt (1011) hineinragt,
• - ein Isolierelement (105) in dem Sockelabschnitt (1013), das den zumindest einen Kontaktstift (103) 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) with a sleeve section (1011) and a base section (1013),
• - at least one contact pin (103) guided through the base section (1013) and protruding freely into the sleeve section (1011),
• - an insulating element (105) in the base section (1013), which insulates the at least one contact pin (103) from the base section (1013) and is positioned in the base section (1013), and
• - an insulating sleeve (107) which is positively positioned in the sleeve section (1011),

characterized in that the housing (101) has a recess (1015) in a transition area between the sleeve section (1011) and the base section (1013), which forms an annular space due to the positioning of the insulating sleeve (107), so that between the at least one current-carrying contact pin (103) and the sleeve section (1011) by positioning the insulating sleeve (107) an air and creepage distance (3) of at least 2 mm is formed.

By modifying a generic circular connector with the measures according to the invention, it is possible to form an air and creepage distance (3) of at least 2 mm and at the same time to implement a hermetically sealed feedthrough for the use of the circular connector (1) in areas at risk of explosion.

The invention is described in detail below.

A first aspect of the present invention relates to a circular connector (1) which initially 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 accommodated in the female part of an (external) cable to be connected. Two or more contact pins (103) are preferably provided.

The circular connector (1) also includes an insulating element (105) in the base section (1013), which insulates the at least one contact pin (103) (preferably with a positive fit) from the base section (1013) and positions it in the base section (1013). The insulating element (105) is preferably formed from a vitreous material. According to the invention, glass, glass ceramics or ceramics are used in particular. This makes the hermetic seal possible. When the circular connector (1) according to the invention is inserted into a corresponding receptacle, the at least one contact pin (103) represents a current-carrying contact pin (103).

Finally, the circular connector (1) according to the invention comprises an insulating sleeve (107) which is positioned in a form-fitting manner in the sleeve section (1011) and is connected to the base section (1013) at one end. The insulating sleeve (107) provides additional insulation between the sleeve section (1011) and the at least one contact pin (103). Preferred materials for the insulating sleeve (107) are polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE; "Teflon"), silicone or other temperature-stable plastics. Alternatively, ceramic materials can also be used.

The circular connector (1) according to the invention is characterized (in particular by U.S. 2005/0101185 A1 ) characterized in that the housing (101) has a recess (1015) in a transition area between the sleeve section (1011) and the base section (1013), which forms an annular space due to the positioning of the insulating sleeve (107), so that between the at least one contact pin (103) and the sleeve section (1011) due to the positioning of the insulating sleeve (107) an air and creepage distance (3) of at least 2 mm is formed.

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 prerequisites 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).

In the area of the base section (1013), the housing (101) has an enlarged inner diameter compared to the sleeve section (1011), 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 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 by inserting the insulating sleeve (107) into the housing (101) on its fourth side and forms the recess (1015) according to the invention.

In this context, the phrase “at least partially” means that the insulating sleeve (107) does not necessarily have to be inserted into the sleeve section (1011) until it rests against the insulating element (105). The insulating sleeve (107) will generally not touch the insulating element (105). Rather, as a rule, an air gap is 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 plug housing (male side) which, thanks to the structural measures according to the invention, in particular through the provision of the insulating sleeve (107) and the annular recess (1015), is approved for use in potentially explosive areas ( Protection levels "ia" and "ib") achieved. In comparison to the prior art, this allows the connector to be reduced in size in a less complex and therefore cost-effective manner while at the same time maintaining its robustness. The ones that are widely used as a standard in the field of sensors and automation Plug connections with the dimension M12 can therefore be used in explosion-protected areas thanks to the round plug connector (1) according to the invention.

The implementation of this use is achieved in particular without limiting the degree of pollution, as described for example in the standard IEC 60079-11, Appendix F. In principle, there is the possibility of reducing the insulating distances if certain material requirements (tracking index (CTI) and degree of pollution) are met. With an air and creepage distance of at least 2 mm, however, there are no longer any such restrictions with regard to material and dirt.

Compared to circular connectors of the generic type, in which the insulating section is realized by encapsulation (or gluing), the circular connector (1) according to the invention has the further advantage that the recess (1015) according to the invention means that such encapsulation (or gluing) can be dispensed with. This means that the circular connector (1) according to the invention does not have to prove that the encapsulation is void-free 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.

In a development of the invention, the clearance and creepage distance (3) has a straight portion (3d) and/or an angled portion (3a, 3b, 3c), which is or are at least 2 mm. This constructive measure according to the invention ensures the required clearance and creepage distance (3) of at least 2 mm, even with smaller plug dimensions.

• - einen ersten winkligen Anteil (3a), der in der Ausnehmung (1015) verläuft,
• - einen zweiten winkligen Anteil (3b), der zwischen Isolierelement (105) und dem Innenraum der Isolierhülse (107) verläuft und
• - einen dritten winkligen Anteil (3c), der zwischen Isolierelement (105) und Isolierhülse (107) verläuft.

This further development can advantageously be designed in such a way that the or an angular portion (3a, 3b, 3c) of the clearance and creepage distance (3) has:

• - a first angular portion (3a) running in the recess (1015),
• - A second angled portion (3b) extending between the insulating element (105) and the interior of the insulating sleeve (107) and
• - A third angled portion (3c) which runs between the insulating element (105) and the insulating sleeve (107).

What is special about this development is the division of the clearance and creepage distance (3) into an angled portion (3a, 3b, 3c), the first angled portion (3a) running in the recess (1015) provided according to the invention, which is an air-filled annular cavity represents. The wording "runs in the (...) recess (1015)" means that, depending on whether the insulating sleeve (107) touches the housing (101) or not, the first angular portion (3a) acts as a creepage distance along the insulating sleeve (107) at the edge of the recess (1015) to the housing (101) (touches) or as an air gap through the recess (1015) from the insulating sleeve (107) to the housing (101) (does not touch).

In addition, the second angled portion (3b) runs between the insulating element (105) and the interior of the insulating sleeve (107). As a rule, according to the present invention, the insulating sleeve (107) does not touch the insulating element (105), so that an air gap arises between them. In this case, the second angled portion (3b) runs as an air gap through the interior of the insulating sleeve (107). In the event that the insulating sleeve (107) and insulating element (105) touch, the second angled portion (3b) runs as a creepage distance between them along the insulating element (105).

Furthermore, the third angular 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).

According to the invention, the sum of the angular portion (3a, 3b, 3c) is greater than/equal to 2 mm.

It has proven to be advantageous if the insulating element (105) is a glass-to-metal bushing, so that the round connector (1) is designed to be hermetically sealed. Together with the base section (1013) and the at least one contact pin (103), the insulating element (105) represents a glass-metal composite. In addition to being hermetically sealed, the insulating element (105) is also chemically resistant and temperature-stable.

In order to achieve an expanded requirement on the environmental conditions 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 through the selection of the material for the insulating sleeve (107), for example PTFE, polyimide or silicone. According to the invention, it is preferred if the operating temperature of the circular plug connector (1) is −55° C. to 180° C., in particular up to 150° C.

It is particularly preferred if the circular connector (1) according to the invention corresponds to the dimensions for M12 connectors. With larger connectors such as M16, a clearance and creepage distance of 2 mm is generally known and can be achieved easily. With smaller dimensions such as M8, it takes significantly more effort to achieve a Clearance and creepage distances of 2 mm are necessary, but in principle possible with the measures according to the invention.

In one embodiment of 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 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.

In a further development, the base section (1013) of the circular connector (1) according to the invention is designed in the manner of a flange, so that it can be mechanically connected to housings of devices in a simple manner.

In a special 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 of being able to use M12 connectors in potentially explosive areas.

• 1: eine schematische Schnittdarstellung des erfindungsgemäßen Rundsteckverbinders 1 in einer Ausführungsform der Erfindung,
• 2: eine erste Detailansicht des in 1 gezeigten erfindungsgemäßen Rundsteckverbinders 1,
• 3 eine zweite Detailansicht des in 1 gezeigten erfindungsgemäßen Rundsteckverbinders 1,
• 4: eine schematische Darstellung einer Isolierhülse 107 in einer Ausführungsform der Erfindung,
• 5: einen weiblichen Steckverbinder 5 (Standard) zur Verbindung mit dem erfindungsgemäßen Rundsteckverbinder 1, und
• 6: den in 1 dargestellten erfindungsgemäßen Rundsteckverbinder 1 in gestecktem Zustand mit dem in 5 dargestellten weiblichen Steckverbinder 5.

Further goals, features, advantages and possible applications result from the following description of exemplary embodiments, which do not limit the invention, with reference to the figures. All of the features described and/or illustrated form the subject matter of the invention, either alone or in any combination, even independently of their summary in the claims or their back-reference. Show it:

• 1 : a schematic sectional view of the circular connector 1 according to the invention in an embodiment of the invention,
• 2 : a first detailed view of the in 1 shown circular connector according to the invention 1,
• 3 a second detailed view of the in 1 shown circular connector according to the invention 1,
• 4 : a schematic representation of an insulating sleeve 107 in an embodiment of the invention,
• 5 : a female connector 5 (standard) for connection to the circular connector 1 according to the invention, and
• 6 : the in 1 illustrated circular connector 1 according to the invention in the plugged state with the in 5 Female connector shown 5.

In 1 the circular connector 1 according to the invention is shown in one embodiment of the invention with four current-carrying contact pins 103, with only three current-carrying contact pins 103 being visible in 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 connector 5 to be connected and protectively surrounding the contact pins 103 protruding freely into it. The base section 1013 forms the basis of the circular connector 1 and can be glued or welded on the device side, for example, or alternatively have a cable connection. The current-carrying contact pins 103 are insulated from the base section 1013 by the insulating member 105 . At the same time, the insulating element 105 assumes the exact positioning of the contact pins 103 within the circular connector 1. The insulating element 105 is preferably made of glass or glass-ceramic.

According to the invention, an insulating sleeve 107 is introduced into the sleeve section 1011, which projects inside the housing 101 up to the base section 1013, but does not necessarily have to end with this. A recess (area with a larger inner diameter) is provided within the base section 1013, which 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.

In 2 This area is shown in detail. A straight clearance and creepage distance 3d is formed in a direct line between the contact pin 103 and the base section 1013, which can take up a sufficiently large creepage distance of at least 2 mm due to the available space at the base of the circular connector 1.

Usually, in prior art connectors, which are M12 gauge, the contact pins 103 are less than 2 mm from the connector housing, which is often made of metal, due to the spatial confinement. The required clearance and creepage distance of 2 mm is therefore undercut with plug-in connections according to the prior art. In 2 is shown that according to the invention the clearance and creepage distance as an alternative to the straight clearance and creepage distance 3d is designed as an angular portion 3a, 3b, 3c.

In 3 is the area around the recess 1015 according to the invention in more detail (from 1 ) to show the angular portion 3a, 3b, 3c of the air and creepage distances. The second angled portion 3b (shown here with a broken line) runs between insulating element 105 and insulating sleeve 107 either as a creepage distance if insulating sleeve (107) and insulating element (105) touch, or as an air gap if insulating sleeve (107) and insulating element (105) do not touch. According to the invention, this is followed in the illustrated embodiment by the third angled portion 3c (shown here as a dotted line), which runs as a creepage distance between the insulating element 105 and the insulating sleeve 107 . The first angled portion 3a follows more or less at right angles (shown here with dot-dash lines). This first angular portion 3a is in the representation 3 an air gap from the insulating sleeve 107 through the recess 1015 to the housing 101, with the insulating sleeve 107 and the housing 101 not touching. 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.

4 10 shows an insulating sleeve 107 in plan view and in section along the line AA. The insulating sleeve 107 has at one end a projection 1071 which rests on the free end of the sleeve section 1011 and supports it against a section 501 of a female connector 5 and isolated at the same time.

5 12 represents a conventional female connector 5. It has a body which has a reduced-diameter portion 501 in its front part, which corresponds to the inner diameter of the circular connector 1 according to the invention, i.e. the inner diameter of the insulating sleeve 107. When inserting, a press fit is first achieved between the female connector 5 and the circular connector 1 according to the invention, which is then secured in the plugged-in 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.

In 6 is shown in section the mated 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 according to the invention was described in particular with reference to the dimension M12 in a four-pole version. However, the principle according to the invention of extending 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 geometric arrangements.

Reference List

1

circular connector

101

Housing

1011

Sleeve section of housing 101

1013

Base section of the housing 101

1015

recess

103

contact pin

105

insulating element

107

insulating sleeve

1071

Projection of the insulating sleeve 107

3

Clearance and creepage distance

3a

first angular part of clearance and creepage distance 3

3b

second angular portion of clearance and creepage distance 3

3c

third angular part of clearance and creepage distance 3

3d

straight-line portion of clearance and creepage distance 3

5

female connector

501

reduced-diameter portion of female connector 5

503

receiving sleeve

Claims (9)

Circular connector (1), comprising - a housing (101) with a sleeve section (1011) and a base section (1013), - at least one contact pin (103) guided through the base section (1013) and protruding freely into the sleeve section (1011), - an insulating element (105) in the base section (1013), which insulates the at least one contact pin (103) from the base section (1013) and positions it in the base section (1013), and - an insulating sleeve (107), which is positively fitted in the sleeve section (1011) is positioned, characterized in that the housing (101) in a transition area between the sleeve section (1011) and base section (1013) has an air-filled recess (1015) through the position of the insulating sleeve (107) forms an annular space, so that an air and creepage distance (3) of at least 2 mm is formed between the at least one contact pin (103) and the housing (101) due to the positioning of the insulating sleeve (107). Circular connector (1) to claim 1 , wherein the clearance and creepage distance (3) has a straight portion (3d) and/or an angled portion (3a, 3b, 3c) which is or are each at least 2 mm. Circular connector (1) to claim 2 , wherein the or an angled portion (3a, 3b, 3c) of the clearance and creepage distance (3) has: - a first angled portion (3a) running in the recess (1015), - a second angled portion (3b ) which runs between the insulating element (105) and the interior of the insulating sleeve (107) and - a third angled portion (3c) which runs between the insulating element (105) and the insulating sleeve (107). Circular connector (1) according to one of Claims 1 until 3 , wherein the insulating element (105) is a glass-to-metal feedthrough, so that the circular connector (1) is designed to be hermetically sealed. Circular connector (1) according to one of Claims 1 until 4 , whereby the operating temperature of the circular connector (1) is - 55 °C to 260 °C. Circular connector (1) according to one of Claims 1 until 5 , whereby the circular connector (1) corresponds to the dimensions for M12 connectors. Circular connector (1) according to one of Claims 1 until 6 , wherein 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. Circular connector (1) according to one of Claims 1 until 7 , wherein the base portion (1013) is formed like a flange. Circular connector (1) according to one of Claims 1 until 8th , wherein the circular connector (1) is part of a vibration sensor.

Images