EP2856558B1 - Rj45 connector with guide device for conductors - Google Patents

Description

The present invention relates to an RJ45 plug with a motherboard for connection with strands of a cable, and a plurality of cutting contacts for receiving the strands, wherein the cutting contacts are arranged in two rows on one side of the motherboard, and the two rows in the longitudinal direction of spaced cable are positioned.

Such RJ45 connectors are usually used for data cabling, in particular according to the twisted pair standard. A data cable according to this state comprises eight individual strands, which can be connected via the RJ45 plug with a corresponding socket. For this purpose, the individual strands of the cable must be contacted in the RJ45 plug, including usually a motherboard is provided with a plurality of cutting contacts arranged thereon. The cutting contacts are arranged in two parallel rows of four individual contacts each, wherein the two rows are positioned spaced apart in the longitudinal direction. This makes it possible to produce such RJ45 plug with a small width, so that results in a compact plug. This is particularly advantageous in the case of patch field cabling since the RJ45 plugs are plugged directly into corresponding sockets there. The cutting contacts can be positioned in the individual rows only next to each other or with a small offset, so that two cutting contacts are positioned longitudinally and laterally offset from the two other cutting contacts, and the strands to the rear two cutting contacts between the front cutting contacts or can extend laterally past it.

With these RJ45 plugs it is difficult to connect the strands to the corresponding cutting contacts. Due to the small size of the RJ45 connectors and the small cross-section of the individual strands, manual connection is time-consuming.

In order to facilitate the contacting of the strands with the cutting contacts, the cutting contacts of the two rows are usually arranged such that the contacting takes place through the strands in the two rows in different planes with respect to a plane of the motherboard. Thus, it is either necessary that different cutting contacts are used, as for example from the US 7,874,849 B2 is known. Alternatively, the motherboard may have a two-level construction. In both cases, the production of the RJ45 connector is expensive.

From the DE 100 57 833 A1 For example, an RJ45 connector for multi-core data and / or telecommunication cables is known which has a shielding housing. The housing is assembled from an upper housing shell and a lower housing shell. In the lower housing shell, a contact carrier is used, which carries the connector contacts of the connector and insulation displacement contacts. In the upper housing shell a charging piece is arranged, in which the wires of the cable are used. When assembling the housing shells, the insulation displacement contacts come into contact with the wires of the cable arranged in the charging piece.

From the US 2009/0203252 A1 is an RJ45 connector with cable channels known in which stripped ends of strands can be contacted by contact elements. The contacting takes place in a longitudinal direction of the plug.

In principle, it is also known to facilitate the connection of the strands with the cutting contacts by a guide device. In particular, the connection with the end of the cable remote row cutting contacts has proven to be difficult in practice, since the strands must be connected over a large distance from the cable end and accidental contacting of the cable end near series cutting contacts must be avoided. The guide device guides the strands to the respective cutting contacts.

Based on the above-mentioned prior art, the invention is therefore based on the object of specifying an RJ45 plug of the type mentioned above, which allows a simple connection with strands of a cable having a simple structure, and with few different parts efficiently and is inexpensive to produce.

The object is achieved according to the invention by the features of the independent claim. Advantageous embodiments of the invention are specified in the subclaims.

Thus, according to the invention, an RJ45 plug is provided with a motherboard for connection to strands of a cable, and a plurality of cutting contacts for receiving the strands, wherein the cutting contacts are arranged in two rows on one side of the motherboard, the two rows in the longitudinal direction of the to be connected Cable spaced apart, and the RJ45 connector comprises a guide means for guiding the strands for connection to the cable end remote row of cutting contacts, wherein the guide means has arcuate ramps for guiding the strands.

The basic idea of the present invention is thus to allow a targeted guidance of the strands to the cutting contacts by the arcuate ramps. In this case, a positioning of the strands is achieved via the guide on the ramps. In particular, the strands can be guided starting from a beginning of the ramp in a different plane with respect to the motherboard, for example, to be able to easily contact the cutting contacts of the cable end remote row. Preferably, the ramps are designed with a trough-shaped cross-section in order to ensure a lateral guidance of the strands. The arcuate configuration of the ramps allows a continuous guiding of the strands, for example by the strands are pushed into the guide device. Simultaneously with the insertion takes place a guide of the strands in their desired position and optionally a bending of the strands. The curved shape of the ramps allows the strands to rest evenly on the ramps. The strands or wires can be arbitrary be executed, either as a single conductor or bundling individual wires. The cutting contacts can be arranged in different ways in the two rows. The cutting contacts may each be arranged without offset in the longitudinal direction to form the respective row. Alternatively, the cutting contacts of a row may be longitudinally offset from one another such that the width of the row is less than four times the width of the cutting contacts, for example with two longitudinally staggered groups of two positioned transversely on the motherboard. Accordingly, in the staggered row, two strands are passed between or adjacent cutting contacts to contact the rear group of staggered cutting contacts. The longitudinal direction is defined by the longitudinal direction of the cable to be connected, which usually also corresponds to the direction in which the cutting contacts are aligned to receive the strands.

According to a preferred embodiment of the invention it is provided that the guide device is designed to guide all strands of the cable for connection to the cutting contacts. This ensures that all strands can easily be connected to the corresponding cutting contacts in a simple manner. Accordingly, the strands are guided to the cutting contacts of the two rows, so that, for example, a common contacting of the cutting contacts can take place.

In a preferred embodiment of the invention, it is provided that the ramps are formed open on their side facing the motherboard. Accordingly, the cutting contacts can contact the strands directly on the ramps.

According to a preferred embodiment of the invention, it is provided that the guide device has insertion openings, in which the strands can be inserted. The insertion openings are preferably aligned in the direction of the cable end. The insertion openings, which are preferably designed to completely enclose the strands, cause an exact guidance of the strands. Accidental sliding out of the strands from the guide device is avoided. Particularly preferably, the guide device is designed such that insertion openings and ramps are combined. More preferably, the guide device is designed in such a way that insertion openings and ramps adjoin one another. As a result, the strands are fed exactly to the ramps, which facilitates the positioning of the strands. Particularly preferably, the insertion openings and the ramps are designed such that the insertion openings form a tangential continuation of the ramps. In particular, the insertion openings are formed on a side of the guide device facing the end of the cable in order to receive the strands.

In a preferred embodiment of the invention it is provided that the cutting contacts of the first and the second row are made equal. Accordingly, only one kind of cutting contacts for the production of the RJ45 connector is required. By the leadership of the strands in the guide device, it is possible to easily perform the contacting of the cutting contacts of the rear row through the strands. A risk of accidental contact of the cutting contacts of the first row is avoided by the guide. Particularly preferred is a guidance of the strands from a first plane above the cutting contacts to a second plane in which the cutting contacts are arranged, to the cutting contacts of the second row.

According to a preferred embodiment of the invention it is further provided that the guide device is designed to guide the strand for connection to the cutting contacts of the second row, starting from the motherboard above the cutting contacts of the first row. Accordingly, the RJ45 connector can be made with low quiescence because the routing of the strands to the second row cutting contacts above the board and the first row cutting contacts is performed. Thus, all strands can be performed evenly to the cutting contacts of the second row.

In a preferred embodiment of the invention, it is provided that the RJ45 plug comprises a housing, on which the guide device is held. The positioning of the guide means on the housing results in a fixed position for the guided strands, which facilitates handling and handling. Also, the contacting of the cutting contacts by the predetermined position of the guide means on the housing can be easily performed.

In a preferred embodiment of the invention is further provided that the housing has two housing shells, and the motherboard is mounted on the first housing shell and the guide means is mounted on the second housing shell. Accordingly, the introduction of the strands in the guide means is easily possible by the structural separation of the motherboard and the guide device. A definition of the first and second housing shell results here only from their connection to the motherboard or the guide device. Particularly preferably, the RJ45 plug is designed such that when a merger of the two housing shells, an automatic contacting of the strands with the cutting contacts.

In a preferred embodiment of the invention it is provided that the housing shells are pivotally connected to each other. Thus, the housing shells are already held together and can be brought together by simply pivoting so that they form the housing. The pivoting allows an exact positioning of the strands in the cutting contacts. Particularly preferably, the RJ45 connector is designed such that when pivoting the two housing shells to each other, an automatic contacting of the strands with the cutting contacts.

In an advantageous embodiment of the invention it is provided that the motherboard is mounted parallel to a wall of the housing. The motherboard can thus be easily mounted in the housing, so that the RJ45 connector is easy to manufacture and has a simple structure.

In an advantageous embodiment of the invention, it is provided that the guide device has inlet pockets for receiving the cutting contacts. Through the dipping pockets, the cutting contacts can enter the guide device and contact the strands in the guided position. In particular, the strands can thus be supported in an area in front of and behind the insertion pockets on the guide device, which facilitates the contacting by the cutting contacts.

In an advantageous embodiment of the invention, it is provided that the guide device has clamping elements and is designed to clamp the strands with the clamping elements. By holding the strands in the guide device they can not accidentally escape from the guide device, for example, when contacting by the insulation displacement terminals. The clamping elements may be formed, for example, as side clamping walls. Accordingly, the strands can be clamped over a predetermined axial section become. Particularly preferably, the clamping elements are designed such that they are combined with immersion pockets. More preferably, the clamping elements are each executed on both sides of the dipping pockets to position the strands exactly in the dipping pockets and hold.

In an advantageous embodiment of the invention it is provided that the guide means comprises a guide portion which extends in a plane parallel to the motherboard. Due to the parallel guide a simple contacting of the cutting contacts is possible.

According to a preferred embodiment of the invention it is provided that the guide device is made of plastic. The design of the guide means made of plastic facilitates the insulation of the strands in the RJ45 connector. In addition, the guide device is easy to manufacture, for example in a plastic injection molding process. Particularly preferably, the guide device is manufactured in one piece.

The invention will be explained in more detail with reference to the accompanying drawings with reference to preferred embodiments.

Fig. 1

einen RJ45-Stecker gemäß einer Ausführungsform der vorliegenden Erfindung in drei Ansichten,

Fig. 2

den RJ45-Stecker aus Fig. 1 in einer Draufsicht und entlang einer Schnittkante A-A,

Fig. 3

den RJ45-Stecker aus Fig. 1 mit einem verbundenen Kabel in einer Draufsicht und einer Schnittansicht entlang einer Schnittkante A-A, wobei der RJ45-Stecker in der Schnittansicht im geöffneten Zustand dargestellt ist,

Fig. 4

eine perspektivische Ansicht des geöffneten RJ45-Steckers aus Fig. 3,

Fig. 5

die Ansicht aus Fig. 3 mit zusätzlich in der Führungseinrichtung geklemmten Litzen,

Fig. 6

eine perspektivische Ansicht der Darstellung des geöffneten RJ45-Steckers mit den geklemmten Litzen aus Fig. 5,

Fig. 7

den RJ45-Stecker gemäß den Ansichten in Fig. 5 im geschlossenen Zustand,

Fig. 8

eine Explosionszeichnung des erfindungsgemäßen RJ45-Steckers aus Fig. 1,

Fig. 9

eine Einzelansicht eines Führungselements des RJ45-Steckers aus Fig. 1, und

Fig. 10

eine Darstellung des Führungselements aus Fig. 9 in drei Ansichten.

Show it

Fig. 1

an RJ45 plug according to an embodiment of the present invention in three views,

Fig. 2

the RJ45 connector Fig. 1 in a plan view and along a cutting edge AA,

Fig. 3

the RJ45 connector Fig. 1 with a connected cable in a plan view and a sectional view along a cut edge AA, wherein the RJ45 plug is shown in the sectional view in the open state,

Fig. 4

a perspective view of the open RJ45 connector Fig. 3 .

Fig. 5

the view Fig. 3 with additionally in the guide device clamped strands,

Fig. 6

a perspective view of the representation of the open RJ45 connector with the clamped strands Fig. 5 .

Fig. 7

the RJ45 connector according to the views in Fig. 5 when closed,

Fig. 8

an exploded view of the RJ45 connector of the invention Fig. 1 .

Fig. 9

a single view of a guide element of the RJ45 connector Fig. 1 , and

Fig. 10

a representation of the guide element Fig. 9 in three views.

The FIGS. 1 to 8 show an inventive RJ45 connector 1 according to a first embodiment of the present invention. The RJ45 plug 1 comprises a housing 2, with two housing shells 3, 4, which are pivotally held together. A closed position of the housing 2 is for example in Fig. 1 shown while the FIGS. 4 or 6 show the housing 2 in the open state.

The RJ45 plug 1 further comprises a motherboard 10 which is attached to a first housing shell 3 of the housing 2. The motherboard 10 is held parallel to a wall 11 of the first housing shell 3. The RJ45 plug 1 further comprises a plurality of identical cutting contacts 12, which are arranged in two parallel rows 14, 16 on the motherboard 10. Each of the rows 14, 16 includes four cutting contacts 12 positioned offset on the motherboard 10 such that the four cutting contacts 12 of each row 14, 16 are juxtaposed in two groups, the two groups being laterally offset and positioned one behind the other.

The RJ45 connector 1 is designed for connection to a cable 20 with eight strands 22, wherein the strands 22 are to be connected to the cutting contacts 12 on the motherboard 10. A longitudinal direction 24 of the cable 20 to be connected corresponds to a longitudinal direction of the RJ45 plug 1 and the direction in which the two rows 14, 16 of the cutting contacts are arranged at a distance one behind the other.

The RJ45 plug 1 further comprises a guide device 30, which is attached to a second housing shell 4. The guide device 30 in this embodiment comprises two individual guide elements 31, which in the Figures 9 and 10 are shown in detail. The guide device 30 comprises insertion openings 32, which are insertable into the strands 22 of the cable 20. Tub-shaped ramps 34 for guiding the strands 22 adjoin the insertion openings 32. The ramps 34 are formed open at their the motherboard 10 side facing and have an arc shape. The ramps 34 connect to the insertion openings 32 in such a way that the insertion openings 32 represent a tangential continuation of the ramps 34. The guide device 30 is designed, the strand 22 for connection to the cutting contacts 12 of second row, which is the cable end remote row, starting from the motherboard 10 above the cutting contacts 12 of the first row 14 to lead.

As is clear from the Figures 9 and 10 results, the guide elements 31 on guide portions 35 which are formed as guide channels, and extending in a plane parallel to the motherboard 10. The guide channels 35 are designed to receive and guide the strands 22 for connection to the cutting contacts 12 of the two rows 14, 16. Furthermore, the guide device 30 comprises in the region of the guide channels 35 insertion pockets 36 for receiving the cutting contacts 12. This affects both the cutting contacts 12 of the first row as well as the second row 16. The dipping pockets 36 are designed at their axial edges with clamping elements 38, with which the strands 22 can be clamped.

Hereinafter, a preferred use of the RJ45 connector 1 for connection to the cable 20 will be explained.

First, the housing 2 of the RJ45 connector 1 is opened in order to introduce the cable 20 with the strands 22 can. In this position, the strands 22 are inserted into the insertion apertures 32 for connection to the cutting contacts 12 of the second row 16 and bent along the ramp 34, as in FIGS Figures 3 and 4 you can see. Subsequently, the strands 22 are pressed into the ramps 34 in the area in the corresponding guide channels 35 with the dipping pockets 36 and held there between the clamping elements 38 by clamping, such as in the Figures 5-7 is shown. The free ends of the strands 22 can be cut flush at the end of the corresponding guide channels 35. Figures 5 and 6 show corresponding to the RJ45 connector 1 with the clamped strands 22 for connection to the cutting contacts 12 of the second row sixteenth

Furthermore, the strands 22 are inserted for connection to the cutting contacts 12 of the first row 14 in the corresponding guide channels 35 and thereby clamped between the clamping elements 38. Subsequently, over the guide channels 35 protruding ends of the strands 22 can be cut flush at their ends facing away from the cable 20. In this case, damage to the strands in the ramp 34 is prevented by the trough shape. The guide means 30 with the clamped strands 22 for connection to all the cutting contacts 12 is in the Figures 5 and 6 shown.

As is apparent from the figures, the clamping of the strands 22 is in principle independent of their positioning, so that the clamping can be performed even after the positioning of all strands 22.

The housing 2 is closed by pivoting the two housing shells 3, 4 to each other, as in Fig. 7 is shown. In this case, the cutting contacts 12 are inserted into the respective insertion pockets 36, and there is an automatic contacting of the strands 22 by the corresponding cutting clamps 12th LIST OF REFERENCE NUMBERS RJ45 connector 1 casing 2 first housing shell 3 second housing shell 4 motherboard 10 wall 11 cutting contacts 12 1st row, close to the cable end 14 2nd row, the cable end away 16 electric wire 20 strands 22 guide means 30 guide element 31 insertion 32 ramp 34 Guide section, guide channel 35 Immersion pocket 36 clamping element 38

Claims (14)

1. An RJ45 connector (1), comprising:

   a mainboard (10) for connecting to strands (22) of a cable (20), and

   a plurality of insulation displacement contacts (12) for receiving the strands (22),

   the insulation displacement contacts (12) being arranged in two rows (14, 16) on one side of the mainboard (10),

   the two rows (14, 16) being positioned at a distance from one another in the longitudinal direction of the cable (20) to be connected, and

   the RJ45 connector (1) comprising a guide device (30) so as to guide the strands (22) for connecting to the row (16) of insulation displacement contacts (12) lying furthest away from the end of the cable,

   characterized in that

   the guide device (30) includes ramps (34) designed in an arc shape for guiding the strands (22).
2. The RJ45 connector (1) according to claim 1, characterized in that
   the guide device (30) is designed to guide all strands (22) of the cable (20) for connecting to the insulation displacement contacts (12).
3. The RJ45 connector (1) according to claim 1 or 2, characterized in that
   the ramps (34) are open on the side thereof facing the mainboard (10).
4. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
   the guide device (30) has insertion openings (32) into which the strands (22) can be inserted.
5. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
   the insulation displacement contacts (12) of the first and second rows (14, 16) are identical.
6. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
   the guide device (30) is designed to guide the strand (22), starting from the mainboard (10), above the insulation displacement contacts (12) of the first row (14) for connecting to the insulation displacement contacts (12) of the second row (16).
7. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
   the RJ45 connector (1) comprises a housing (2) on which the guide device (30) is held.
8. The RJ45 connector (1) according to claim 7, characterized in that
   the housing (2) comprises two housing shells (3, 4), and
   the mainboard (10) is mounted on the first housing shell (3) and the guide device (30) is mounted on the second housing shell (4).
9. The RJ45 connector (1) according to claim 8, characterized in that the housing shells (3, 4) are pivotably connected to one another.
10. The RJ45 connector (1) according to any one of the preceding claims 7 to 9, characterized in that
    the mainboard (10) is mounted parallel to a wall (11) of the housing (2).
11. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
    the guide device (30) comprises lowering-in pockets (36) for receiving the insulation displacement contacts (12).
12. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
    the guide device (30) comprises clamping elements (38) and is designed to hold the strands (22) in a clamped manner by way of the clamping elements (38).
13. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
    the guide device (30) comprises a guide portion (35), which extends in a plane parallel to the mainboard (10).
14. The RJ45 connector (1) according to any one of the preceding claims, characterized in that
    the guide device (30) is made of plastic.

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