EP3104469A1 - Circular connector for data transmission of high data rates - Google Patents

Abstract

The present invention relates to a circular connector (1) for high data rates with a shielded connection cable (100) having at least four pairs of wires (100a, 100b), wherein the circular connector (1) with an electrically conductive housing (10) is formed in which a shielded contact carrier assembly (20) is accommodated from at least one contact carrier holder (30), an electrically conductive shielding cross (40) and four contact carriers (50), wherein the shielding cross (40) has four shielding webs (41), the four contact carrier receiving regions (42a, 42b, 42c, 42d) spatially, wherein in each contact carrier receiving portion (42a, 42b, 42c, 42d), a contact carrier (50) with two contacts (60, 61) is arranged, and wherein each contact carrier (50) from a pre-assembly in one Final assembly position deflectable wing (51) (with a fin), each in its deflected final assembly position one of the respective n cores (100a, 100b) assigned shielding (101) to the shielding cross (40) presses.

Description

The present invention relates to a circular connector with a shielded connection cable, in particular for data transmission of high data rates in the gigabit range according to claim 1.

Wired data transmission according to the Ethernet standard has been known for years. Various types of cable and connector types are used. The use of Registration Jack connectors (eg RJ-45 connectors) and the internationally standardized M12 connectors in the IEC 61076 standard series is widespread.

Ethernet connections are increasingly used and needed in the industrial environment (Industrial Ethernet). However, industrial use raises Requirements for EMC immunity to interference, the operating temperature range, protection against dirt, dust and splash water, the resistance to various media such as oil, lubricants and acids of connectors. Frequent use consists in the connection of sensors or actuators in industrial plant engineering. The power supply of the sensors or actuators takes place via suitable connecting cables, but at the same time signals and / or data are transmitted via the data plugs.

Unwanted electromagnetic interference and interference caused by, for example, inductive proximity switches can cause malfunction in industrial plants. However, such EMC interference (inductive or capacitive or galvanic interference) must be avoided to ensure operational safety. In order to prevent possible interference of individual components in an industrial plant due to EMC interference (electromagnetic interference), often specially shielded connection cables are used, which are considerably more expensive than unshielded cables.

However, the shielding concepts known in the prior art are always optimized for very specific disturbing influences.

In order to be able to realize different shielding concepts, the providers of shielded connection cables offer different cable variants. When planning a technical or industrial system in which data and signals have to be transmitted, the user must decide on a specific shielding concept and adequate shielding attenuation and then wire the individual system components accordingly.

However, in addition to the fundamental possibility of data transmission, the current automation processes demand the transmission of very large amounts of data at constantly increasing transmission speeds. Currently, data rates up to 10 gigabit / s are to be transferred with the so-called M12 connectors.

The 10GBASE-T standard, like 1000BASE-T, uses four pairs of twisted pairs each. The structured cabling used for this purpose is described in the global standard ISO / IEC 11801 as well as in TIA-568A / B.

In the data transmission, the data stream is divided into the four pairs of wires, so that on each pair of wires each 2.5 Gbit / s in a transfer direction. must be transmitted in the transmit and receive directions.

Due to the high signal rate but various precautions must be taken to ensure the transmission reliability. In addition to the external interference, there are disruptions in the data transmission of high-frequency signals within the cable. Such interference is passively reduced by measures in the cable, which is usually to ensure sufficient potential gap between the wire pairs.

Can not be prevented, the so-called alien crosstalk, ie the crosstalk of adjacent, over long distances tightly bundled insufficiently shielded cable. Therefore, appropriate cables of the appropriate CAT category are foreseen in the relevant standards.

However, it is necessary that at the interfaces where releasable connectors are used, the cable shield is passed accordingly from one connector to the other and also within the cable route in the connector no unwanted interference effects occur and crosstalk or crosstalk is to be reliably prevented.

It is therefore an object of the present invention vorbesagte overcome problems and disadvantages and to provide a respect to the susceptibility improved or optimized circular connector, preferably for data transmission to 10 gigabit, which is inexpensive to manufacture and has a high reliability.

This object is achieved by a connector according to the features of Claim 1 solved.

The basic idea of the invention resides in the design of a specific screen device which has a plurality of contact-holding means and a screen transfer in order to connect the screen from the plug-in connector to the corresponding mating connector, e.g. to convert a socket, wherein the shielding device is formed so that a secure contact of the cable shield is ensured.

The special feature is that according to the concept of the invention also the possibility exists the screen of the wire pairs (twisted pairs) isolated d. H. to lead from the potential separated from the outer shield of the sheathed cable. In other words, one aspect of the present invention is to provide a connector concept in which two separate shielding guides are possible.

Another aspect of the present invention is that the shield is transmitted within the connector via an inner shield cross by means of an axially movable and spring-loaded contact the front side of the mating connector.

According to the invention, a circular connector, preferably an M12 circular connector with a shielded connection cable is provided with at least four wire pairs, wherein the circular connector is formed with an electrically conductive housing in which a shielded contact carrier assembly of at least one contact carrier holder, an electrically conductive shielding cross and four contact carrier is added , wherein the shielding cross has four (outwardly projecting) Schirmungsstege, which in this way four mutually shielded contact carrier receiving areas spatially separated from each other, wherein in each contact carrier receiving area a (preferably quarter-circle segment shaped) contact carrier with two contacts (for connection to a respective pair of wires) is arranged , According to the invention it is provided that each contact carrier one of a pre-assembly has in a final assembly position deflectable wings, which presses in each case in its deflected final assembly position a cable pair assigned to the respective pair of wires to the shielding cross. The shielding cross may further preferably comprise four insulated, ie electrically isolated shielding webs or regions which are each provided for contacting with one of the cable shields of the twisted pairs.

In an advantageous embodiment of the invention, it is provided that the respective deflectable wing has an outwardly projecting actuating element, which is intended when inserting the contact carrier assembly into the housing on an inner wall of the circular connector, preferably the housing is actuated from its pre-assembly in its final assembly position and then the Press the cable shield against the corresponding contact area on the shielding cross.

In a further preferred embodiment of the invention, it is provided that the contact carriers each have a contact carrier holding section enclosing the contacts and an adjoining contact carrier receiving section, which is open on one side and adjoins the respective aforementioned wing.

It is further advantageous if the actuating element in the form of a fin projecting from the wing is formed with a fin ridge sloping relative to a connecting base of the fin with the wing (opposite to the insertion direction). This sloping ramp acts as a control curve during insertion, so that the wing is deflected inward accordingly.

The contact carrier holder is advantageously designed so that it at least partially receives or holds the shielding cross.

It can advantageously be further provided according to the invention that the contact carrier holder forms two open half-shells for receiving contact portions of the contacts, which is preferably arranged in the mounted position relative to the one-side contact carrier receiving portion of the respective contact carrier, so that in each case a half-shell of the contact carrier and a half-shell the contact carrier holder comprise the contact together.

In a likewise advantageous embodiment of the invention it is provided that the contact carrier assembly is secured to a cylindrical cable passage sleeve means one or more support arms, wherein at least one arm end of the support arms, a window-like opening (opening) is provided for engagement in a retaining lug of the cable passage sleeve and the retaining arms are formed by the contact carrier holder. Another arm may be formed with an opening in the front end extension direction, which can be pushed over a pin projecting on the cable sleeve and thus fixes the arm.

According to the invention in a preferred embodiment of the inventive connector in the center of the contact carrier assembly as a screen transfer means an axially spring-loaded in the insertion direction contact or pin is provided, the spring-loaded in a mating connector with a corresponding mating connector contacted a correspondingly corresponding screen element of the mating connector. According to the invention, therefore, a connector system is provided from a connector pair as described above.

In a likewise preferred embodiment of the invention, it is provided that at the screen cross each between two immediately adjacent webs, which are preferably oriented at an angle of 90 ° to each other is provided at an angle of about 45 ° wegstehender from the screen cross holding block, on each one, a corresponding opening having contact carrier, preferably by clamping, is attached. This results in a particularly compact design together with the design of the contact carrier holder.

Another aspect of the present invention relates to an embodiment in which the connection cable has an outer shield and a separate inner respectively surrounding the wire pairs inner shield, but the shield cross is only connected to the inner shield of the connecting cable and the outer shield is guided separately.

Other advantageous developments of the invention are characterized in the subclaims or are shown in more detail below together with the description of the preferred embodiment of the invention with reference to FIGS.

Fig.1

eine perspektivische Ansicht einer Baugruppe aus Kontaktträgeranordnung und Kabeldurchlasshülse gemäß einer beispielhaften Ausführungsform der Erfindung,

Fig.2

eine perspektivische Ansicht der Baugruppe aus Kontaktträgeranordnung und Kabeldurchlasshülse gemäß der Figur 1 zusammen mit einem Gehäuse,

Fig.3

eine perspektivische Ansicht eines Kontaktträgers mit eingesetzten Kontakten,

Fig.4

eine schematische Schnittansicht durch eine Ausführungsform eines erfindungsgemäßen Steckverbinders mit einem Gegenstecker,

Fig.5

eine schematische Schnittansicht durch eine weitere Ausführungsform eines erfindungsgemäßen Steckverbinders und

Fig.6

eine weitere Schnittansicht quer durch einen Steckverbinder gemäß Figur 5.

Show it:

Fig.1

3 is a perspective view of a contact carrier assembly and cable grommet assembly according to an exemplary embodiment of the invention;

Fig.2

a perspective view of the assembly of contact carrier assembly and cable passage sleeve according to the FIG. 1 together with a housing,

Figure 3

a perspective view of a contact carrier with inserted contacts,

Figure 4

a schematic sectional view through an embodiment of a connector according to the invention with a mating connector,

Figure 5

a schematic sectional view through a further embodiment a connector according to the invention and

Figure 6

another sectional view through a connector according to FIG. 5 ,

In the following description of embodiments of the present invention, it is to be understood that like reference characters in the figures indicate like structural and / or functional features.

The FIGS. 1 to 3 each show perspective views of parts of an assembly of a connector 1 according to the invention, wherein the FIG. 1 a contact carrier assembly 20 with a cable passage sleeve 60 according to an exemplary embodiment of a connector 1 according to the invention, as shown in the sectional views of FIGS. 4 or 5 are shown.

In the FIG. 2 In addition, a housing 10 of the connector 1 is shown, in which the contact carrier assembly 20 shown next to it is mounted.

In the FIG. 5 a schematic sectional view of a circular connector 1 with a shielded connection cable 100 is shown. Also shown is the schematic course of the lines of two of the wire pairs 100a, 100b.

The circular connector 1 is formed with an electrically conductive housing 10 in which the shielded contact carrier assembly 20 from the contact carrier holder 30, the electrically conductive shielding cross 40 and four contact carrier 50 is received. The shielding cross 40 has four Schirmungsstege 41.

Like in the FIG. 1 can be further seen, the four Schirmungsstege separate the housing interior in four mutually shielded contact carrier receiving areas 42a, 42b, 42c, 42d spatially. In each of the contact carrier receiving areas 42a, 42b, 42c, 42d, a contact carrier 50 each having two contacts 60, 61 is arranged. Each contact pair 60, 61 is a "twisted pair" line, so one assigned shielded wire pair or connected to one line of the wire pair.

Each contact carrier 50 has, as clearly in the FIG. 3 it can be seen, a wing 51 on. The wing 51 is connected via a flexible connecting web 51 a with a one-sided open contact carrier receiving portion 50 b of the contact carrier 50. Adjoining the contact carrier receiving portion 50b is a contact carrier holding portion 50a enclosing the two contacts 60, 61. The contact carrier holding section 50a has two through-going in the insertion direction of the connector channels 54 through which a respective contact 60 and 61 is mounted. The contacts 60, 61 are supported on retaining projections 60a. The contact carrier receiving portion 50b which is open on one side has, for each contact 60 or 61, an open half shell 55a, 55b, each in the form of a groove which is correspondingly simulated to the outer contour (ie the shape and the radius) of the contacts. The wing has aligned in the insertion direction with the half-shells 55a, 55b depending on a wing portion 56a, 56b, which are each separated by a laterally open gap 57 from the contact carrier receiving portion 50b. The thickness of the vane 51 is significantly reduced (approximately 15-25% of the thickness of the contact carrier receiving portion 50b) with respect to the thickness of the contact carrier in the region of the contact carrier receiving portion 50b. The wing 51 is presently provided with a fin 52. The wing 51 may be resiliently displaced from a (as in FIG FIG. 2 shown) pre-assembly in a (as in FIG. 5 shown) final assembly position are deflected, wherein the shield 101 of the respective contact pair of the associated wire pairs 100a, 100b are pressed by the respective wings 51 securely contacting the screen cross 40, as shown in the sectional view of FIG. 6 is apparent. In the FIG. 2 Furthermore, an approximately rectangular recess 58 is made in the contact carrier holding section 50a. The contact carrier holding portion 50a has an approximately quarter-circular cross-section and extends in the extension direction of the contacts 60, 61 and forms two at an angle of about 90 ° to each other standing side surfaces 57a, 57b, over a teilzylindermantelelförmige curved surface 57c together form part of the outside of the contact carrier holding portion 50a. At the screen cross 40 each between two immediately adjacent webs 41, which are oriented in the present case at an angle of 90 ° to each other, one at an angle of about 45 ° to the outside of the screen cross 40 wegstehender holding block 44 is provided, each with a contact carrier 50 with its corresponding opening 58 is clamped attached.

The respective wing 51 has an outwardly projecting actuating element 52 (here fin 52), which was actuated upon insertion of the contact carrier assembly 20 in the housing 10 on an inner wall 11 of the circular connector and that of the housing 10 from its pre-assembly into its final assembly position.

The actuator 52 is in the form of a protruding from the wing 51 fin with a relation to a connecting base 53 of the fin with the wing 51 obliquely rising fin back 54 is formed.

In the FIG. 1 It can also be seen that the contact carrier holder 30 partially receives and carries the shielding cross 40. The contact carrier holder 30 has two integrally formed open half-shells 31 a, 31 b for receiving contact portions of the contacts 60, 61. These half-shells 31 a, 31 b are in the assembled state of the contact carrier 50 respectively corresponding to the half-shells 55 a, 55 b and enclose rear portions of the contacts 60, 61st

The assembled contact carrier assembly 20 (see FIG. 2 ) is attached to a cylindrical cable passage sleeve 60 by means of one or more retaining arms 33. At the illustrated arm end 33a of the support arm 33 is a window-like opening 34 for engaging a retaining lug of the cable passage sleeve 60 is provided, wherein the holding arms 33 are formed integrally by the contact carrier holder 30.

In the FIG. 4 It can be seen that in the center of the contact carrier assembly 20 as a shield transfer means an axially spring-mounted in the insertion direction contact pin 70 is provided, the spring-loaded in a plugged with a corresponding mating connector 1 'state a correspondingly corresponding screen element 70` of the mating connector 1' contacted.

The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.

Claims (10)

Circular connector (1) with a shielded connection cable (100) with at least four wire pairs (100a, 100b), wherein the circular connector (1) is formed with an electrically conductive housing (10) in which a shielded contact carrier assembly (20) of at least one contact carrier holder ( 30), an electrically conductive shielding cross (40) and four contact carriers (50) is received, said shielding cross (40) has four Schirmungsstege (41), the four mutually shielded contact carrier receiving areas (42a, 42b, 42c, 42d) spatially separate, wherein a contact carrier (50) with two contacts (60, 61) is arranged in each contact carrier receiving region (42a, 42b, 42c, 42d), and wherein each contact carrier (50) has a wing (51) which can be deflected from a pre-assembly position into a final assembly position, in each case in its deflected final assembly position, a shield (101) surrounding the respective pair of wires (100a, 100b) to the shielding cross (40) dr ckt. Circular connector (1) preferably for transmitting high data rates in the gigabit range according to claim 1, characterized in that the respective wing (51) has an outwardly projecting actuating element (52), which upon insertion of the contact carrier assembly (20) into the housing ( 10) on an inner wall (11) of the circular connector, preferably the housing (10) is actuated from its pre-assembly in its final assembly position. Circular connector (1) according to claim 1 or 2, characterized in that the contact carriers (50) each have a contacts (60, 61) enclosing the contact carrier holding portion (50a) and an adjoining open on one side contact carrier receiving portion (50b) to which the respective Wing (51) connects. Circular connector (1) according to one of claims 2 or 3, characterized in that the actuating element (52) in the form of a protruding from the wing (51) fin with a relation to a connecting base (53) of the fin with the wing (51) obliquely ascending fin back (54) is formed. Circular connector (1) according to one of the preceding claims, characterized in that the contact carrier holder (30) at least partially receives the shielding cross (40). Circular connector (1) according to one of the preceding claims, characterized in that the contact carrier holder (30) forms two open half-shells (31 a, 31 b) for receiving contact portions of the contacts (60, 61). Circular connector (1) according to one of the preceding claims, characterized in that the contact carrier arrangement (20) is fastened to a cylindrical cable passage sleeve (60) by means of one or more retaining arms (33), wherein at least one arm end (33a) has a window-like opening (34 ) is provided for engagement in a retaining lug of the cable passage sleeve (60) and wherein the retaining arms (33) are formed by the contact carrier holder (30). Circular connector (1) according to one of the preceding claims, characterized in that in the center of the contact carrier assembly (20) is provided as a screen transfer means an axially spring-loaded in the insertion direction contact pin (70) in one with a corresponding Mating connector mated state spring force contacted a correspondingly corresponding shield element of the mating connector. Circular connector (1) according to one of the preceding claims, characterized in that the shield cross (40) each between two immediately adjacent webs (41), which are preferably oriented at an angle of 90 ° to each other at an angle of about 45 ° on the outside of the screen cross (40) wegstehender holding block (44) is provided on the one, a corresponding opening having the contact carrier (50) is preferably clamped attached. Circular connector (1) according to one of the preceding claims, characterized in that the connecting cable (100) has an outer shielding (102) and a separate inner core (101) surrounding the respective pairs of wires (101, 102), wherein the shield cross (40 ) is connected only to the inner shield (101) of the connection cable (100) and the outer shield (102) is separated therefrom.

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