EP3210265A1

EP3210265A1 - Connector assembly

Info

Publication number: EP3210265A1
Application number: EP15781652.1A
Authority: EP
Inventors: Frédéric Schull
Original assignee: Multi Holding AG
Current assignee: Staeubli Electrical Connectors AG
Priority date: 2014-10-20
Filing date: 2015-10-19
Publication date: 2017-08-30
Also published as: WO2016062652A1

Abstract

Connector assembly (1) for connecting electrical sides, preferably one electric motor of a rolling stock, in particular of a locomotive to two different power sources, wherein the connector assembly (1) comprises a coupling part (2) and a first and a second counterpart (3,4). Upon engagement of the coupling part (2) with the first counterpart (3) a first electrical side is connected to a second electrical side; upon engagement of the coupling part (2) with the second counterpart (4) the first electrical side is connected to a third electrical side.

Description

TITLE

Connector assembly TECHNICAL FIELD

The present invention generally relates to the technical field of electrical connectors. In particular, it relates to a connector assembly for establishing an electrical line from a first electrical side to a second and a third electrical side, preferably a power line to an electric motor of a rolling stock, in particular of a train composition or locomotive.

PRIOR ART

Rolling stocks, such as locomotives, need regular maintenance. During the locomotive's stay in the workshop, it is, in some instances, required to energize the electric motor. Normally, a contact to the regular power source is not possible in the workshop. Accordingly, a separate power line has to be established from a second power source to the motor. For that purpose, common solutions implement an array of switches for enabling, in one switch state, a power supply to the electric motor from the regular power source and, in another switch state, a power supply to the electric motor from an alternative power source. The alternative power source may be the mains in the workshop. The known switching solutions are commonly integrated in the vehicle and therefore add to the latter' s overall weight.

EP 2 665 147 A 1 shows a connecting assembly, wherein all connected lines are connected to one another.

SUMMARY OF THE INVENTIO

It is an object of the present invention to provide an electric connector assembly for connecting a first electric side to either a second or third electric side, preferably an electrical motor of rolling stock, such as a train composition or locomotive, to either of two different power sources, wherein the connector assembly is lighter.

This object is achieved by a connector assembly with the features of claim 1. Accordingly, a connector assembly for connecting a first electrical side either to a second or to a third electrical side is suggested

wherein the connector assembly is configured to electrically connect at least one first electrical line to at least one second or one third electrical line, wherein the first electrical line is electrically connected to the first electrical side, the second electrical line is electrically connected to the second electrical side, and wherein the third electrical line is connected to the third electrical side;

wherein the connector assembly comprises a coupling part, the coupling part being configured to accommodate first and second end portions of the first and second electrical lines, respectively, so that the first and second end portions are accommodated in said coupling part in an electrically isolated manner from one another, characterized in that the connector assembly comprises at least or exactly two counterparts each for engagement along an engagement axis with said coupling part,

wherein a first counterpart of the at least or exactly two counterparts is configured to electrically connect, in engagement position with the coupling part, the first and second end portions of the first and second electrical lines, respectively, to one another so as to electrically connect the first and second electrical side to one another,

wherein a second counterpart of the at least or exactly two counterparts is configured to accommodate a third end portion of said third electrical line and is further configured to connect, in engagement position with the coupling part, the first and third electrical lines to one another so as to electrically connect the first electrical side and the third electrical side to one another.

The coupling part and the counterparts are co-operating parts of the connector assembly.

The terms "first, second, third electrical side" refer to an electrical power source, to an electrical load, or to data and/or signal receiving or transmitting means. The first side may preferably be an electrical motor of the rolling stock (e.g. an electrical drive of a locomotive), while the second electrical side may be a first power source (e.g. the overhead lines of the railway lines) and the third electrical side is a second power source (e.g. the mains in a workshop) for supplying the electric motor. Moreover, the first, second, third electrical sides may also be a combination of a power source with parallel data communication means or signal communication means (e.g. lines relating to tracking control unit). Generally, the electrical sides are sides that are commonly connected to one another by means of arrangements with switches.

The terms "first, second, third electrical line" refer to an electrical pathway for transmitting an electrical signal, control signals, electrical power or data signals, in particular to an electrical cable or the like. Accordingly, the first, second, and/or third electrical lines are electrical power, signal, control, or data lines, wherein, preferably, the first electrical side is an electric motor of the rolling stock, the second electrical side is a first power source for the electric motor, and the third electrical side is a second power source for the electric motor.

The term "end portion" refers to a section of the line, preferably an end section of line - e.g. a free end of a cable - that is connectable to a respective receiving part a connector in the coupling part or the first or second counterpart.

Accordingly, it is an aspect of the present invention to provide a connector assembly comprising at least or exactly three connector parts (i.e. the coupling part and the at least two counterparts), wherein the first and second counterparts are configured for connection with the coupling part, one at a time, for establishing electrical connections between specific lines (e.g. power, data, control, or auxiliary lines).

The coupling part provides at least one first and second electrically separated electrical line connectors configured for accommodating the first electrical line related to the first electrical side and the second electrical line connected to the second electrical side, respectively. The first counterpart is configured for establishing, upon engagement with the coupling part, a connection configuration that corresponds to the aforementioned first switching state of the known connector assembly, i.e. a state in which the first and second electrical line are electrically connected. Thereby, e.g., a power supply line may be established between the electric motor and the first power source.

The connector assembly may be further configured for electrically connecting the first and third end portions of the first and third electrical lines, respectively, to one another. Thereby, the first electrical side may be electrically connected to the third electrical side. In order to do so, the second counterpart is configured to accommodate the third end portion of said third electrical line and is configured to connect, in engagement position with the coupling part, the first and third electrical lines to one another so as to establish an electrical connection between the first and third electrical sides, e.g. between the electrical motor and the second power source.

Preferably, the second counterpart may be configured to electrically separate, in engagement position with the coupling part, the first and second end portions of the first and second electrical lines accommodated in the coupling part. This allows to electrically detaching the first electrical side, e.g. the electrical motor, from the second electrical side, e.g. the first power source, while connecting the third electrical side, e.g. the second power source, to the first electrical side. Accordingly, the term "electrically separated" means in this context that the first and second electrical sides are not electrically connected. This may be achieved by spatially separating or electrically insulating the first end portion of the first electrical line from the second end portion of the second electrical line.

In some embodiments, not only one electrical line but further electrical lines may be connected as outlined above. These lines may be data, earth, auxiliary, control, power, or further lines.

Accordingly, in some embodiments, said coupling part may be configured to accommodate at least one or a plurality of first and second further end portions of first and second data further electrical lines, respectively.

The second counterpart may then be configured to accommodate additionally at least one third further end portion of at least one third further electrical line, wherein the second counterpart is configured to connect, in engagement position with the coupling part, the first and third further end portions of the first and third further electrical line(s), respectively, to one another. Thereby, further electrical lines, such as data lines, may be established that run substantially parallel to the first, second, and third electrical line(s).

Accordingly, additional data lines may be established that run substantially parallel to the first, second and third lines, e.g. from or to the first or second power source.

Preferably, at least three, four, five, or six or more separate data lines are connected to a bundle, wherein the bundle may be referred to as first, second, and/or third data line.

Additional lines, such as auxiliary power or control signal lines or the like may be connected in the same way.

Preferably, the coupling part and the first and second counterparts each comprise a plurality, preferably at least or exactly three power lines as first, second and third electrical lines for supplying the electric motor. Three power lines allows for a 3-phase current supply of the electrical motor. Additional lines may be added. Accordingly, in a preferred embodiment, the coupling part comprises three first power line connectors for receiving end portions of three first power lines and for connection with three first power line connectors of the first or three third power line connectors of the second counterpart. Moreover, the coupling part comprises three second power line connectors for receiving end portions of three second power lines and for connection with three second power line connectors of the first counterpart.

The first counterpart comprises three first power line connectors for connection with the three first power line connectors of the coupling part. Moreover, the first counterpart comprises three second power line connectors for connection with the three second power line connectors of the coupling part. The first and second power line connectors of the first counterpart are connected to one another for connection of the three first and second power lines to one another.

The second counterpart comprises three third power line connectors for receiving end portions of three third power lines and for connection with the three first power line connectors of the coupling part for connection of the three first and third power lines to one another.

In some preferred embodiments, a shape of the coupling part and a shape of the first and/or second counterpart are generally cuboidal with a distal face and a proximal face. The distal faces of the coupling part and the counterparts are designed correspondingly such as to be connectable to one another. The distal faces define the engagement interface. Receiving parts of the connectors for receiving the end portions of lines are arranged on the proximal faces; connecting parts of the connectors are arranged on the distal faces. One of the connecting parts may be the pin-side part, the pin-side part may be one or a plurality of pins, blades or analogous contacts; the corresponding connecting part may be the socket-side part for co-operation with the pin-side part.

Accordingly, in some embodiments, the connector comprising the coupling part in engagement with the first or second counterpart may be also substantially cuboidal.

For such cuboidal shapes, it is preferred that the connectors in the different connector groups are arranged in rows as this allows for an efficient use of space. The term "row" is to be understood as a plurality of connector arranged in a spaced manner transverse to the engagement axis.

Accordingly, it is a further aspect of the present invention that the coupling part and the first counterpart comprise first and second power line connectors to connect the first and second power lines,

wherein the second counterpart comprises third power line connectors to connect the first and third power lines,

wherein the first, second, and third power line connectors are arranged in rows, the rows extending preferably parallel to another.

These rows may be arranged such that respective connection between corresponding connectors in the coupling part and the first and second counterpart may be established upon engagement of the respective connector parts.

Preferably, the line connectors, if not optical, are arranged electrically floating.

In some embodiments, the coupling part and the first and second counterparts are electrically insulated such as to be touch proof. Accordingly, electrical shielding arrangements may be provided such that casings may be touch proof. This allows a safe and easy handling of the connector assembly.

In some embodiments, the connector assembly further comprises an interlocking structure for holding or locking the engaged connector parts together after engagement. The interlocking structure may be partly arranged on the coupling part and partly on the first and/or second counterpart. This may be advantageous as the connection between the coupling part and the first counterpart may be used during normal use of the rolling stock in therefore experiences vibrations. Accordingly, this connection may be secured for longtime use under vibrational load. The coupling part and the second counterpart may be used only during revision of the rolling stock. Accordingly, it may be preferred to have a less complicated but a faster connection option (i.e., for example, no locking pins, only engagement pins, see below).

Accordingly, pins may be arranged on one casing, engagement hook elements on a corresponding casing. Snap or click connections may be used.

In some embodiments, said interlocking structure comprises at least one interlocking stirrup that may be attached to the casing of the coupling part, the first counterpart, or the second counterpart, wherein the interlocking stirrup may be pivotable about a pivot axis transverse to the engagement axis between a release position and an interlocking position for releasing and for interlocking the coupling part with the first counterpart and/or the second counterpart, respectively.

Preferably, the interlocking structure comprises at least one engagement pin, the interlocking stirrup and the engagement pin being configured and arranged for mutual engagement such as to interlock the coupling part with the first counterpart and/or the second counterpart relative to the engagement direction when the interlocking stirrup is in the interlocking position. Accordingly, the stirrup may comprise at least one, preferably two levers, each with a recess for receiving and partly embracing the engagement pin upon pivoting the stirrup from release to interlocking position. Accordingly, the interlocking stirrup and the engagement pin are arranged on separate elements of a group of elements, the group consisting of the coupling part, the first counterpart, and the second counterpart.

In some embodiments, the two levers may be connected by a connecting element (e.g. a rod-like or flat element) that connects free ends of the levers, the free ends being opposite the recesses, to one another. The levers and the connecting element may be a single piece element, or individual elements that are connected to one another by fastening means.

In some embodiments, the lever may have a slot like recess for the engagement pin such that it is usable for levering the coupling part and first or second counterpart into engagement position. Accordingly, the lever and the pin may be designed such that pivoting the lever from release position into interlocking position during causes a final engagement movement of the engaging parts.

Preferably, the first and/or second counterpart comprise at least one locking pin, wherein the interlocking stirrup comprises a reception, wherein the reception and the locking pin are configured for mutual form-fit engagement in engagement position of the coupling part and the first and/or the second counterpart.

Preferably, the reception may be surrounded and extended by a partial sleeve. The partial sleeve and the locking pin may be provided with a first through hole and second through hole, respectively. The first and second through holes may be arranged such as to be aligned if the interlocking stirrup is in the interlockmg position, wherein the connector assembly preferably further comprises a pin, in particular, split pin configured to be pushed through the aligned through holes for interlocking the interlocking stirrup and the locking pin. Thereby, the engagement may be secured.

Preferably, the connector assembly includes protective shielding structures such that the coupling part and the first or second counterpart are configured to accommodate the first and second end portions of the first and second electrical lines and the first and third end portions of the first and third electrical line, respectively, in a shielded manner. Accordingly, in some embodiments, shielding material individually surrounding or interposed between mutually spaced connectors or lines guided to connectors may be provided. Thereby, each power and/or data line may be continuously shielded throughout the connector assembly. Accordingly, data lines - which are generally sensitive to noise - may be arranged close to the first, second, and/or third power connectors, and in particular, power and data lines may be accommodated in the same casing.

In some preferred embodiments, the connector assembly further comprises a guiding structure for facilitating engagement or disengagement of the coupling part and the first or second counterpart. The guiding structure may be attached to the casing of the coupling part or to the first or second counterpart and engages with the casing of the opposing part during connector part engagement.

Preferably, the guiding structure comprises at least one, preferably a plurality of L-shaped guiding rails, the guiding rails being arranged on the casing and protruding over said casing in a direction parallel to the engagement axis. Preferably, at least one, preferably all guiding rails comprise a free end with an alignment structure for aligning the coupling part and the first or second counterpart to one another. The alignment structure may be a part funnel-like extension at the free end of the guiding rail for receiving an edge or a corner of the opposite casing. Preferably, the L-profile guiding rail may be attached to an edge that extends parallel to the engagement axis.

The present invention also relates to rolling stock, in particular to a train composition or a locomotive, comprising a coupling part and further comprising a first counterpart or a second counterpart of a connector assembly as described above.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention are described in the following with reference to the drawings, which are for the purpose of illustrating the present preferred embodiments of the invention and not for the purpose of limiting the same. In the drawings,

Fig. 1 shows a known connector assembly with a switching device in a first switching state;

Fig. 2 shows the connector assembly according to Fig. 1 in a second switching state; Fig. 3 shows a schematic sketch of a part of a connector assembly according to invention;

Fig. 4 shows a schematic sketch of a part of the connector assembly according to Fig. 3; Fig. 5 shows, in a perspective view, a part of a preferred embodiment of the connector assembly according to invention, including a coupling part and a first counterpart; Fig. 6 shows in a perspective view, a part of the preferred embodiment of the connector assembly according to Fig. 3, including the coupling part and a first counterpart; Fig. 7 shows a detail of Fig. 5;

Fig. 8 shows a detail of Fig. 6;

Fig. 9 shows a detail of an interlocking structure for securing the coupling part and the first counterpart according to Fig. 5 in engagement position;

Fig. 10 shows a cross-section through the coupling part and the first counterpart according to Fig. 5 in engagement position with the interlocking structure according to Fig. 9;

Fig. 11 shows a side view of the coupling part and the first counterpart according to Fig.

10;

Fig. 12 shows a detail of Fig.10;

Fig. 13 shows a detail of a cross-section through of the coupling element according to Figs. 5 and 6; and

Fig. 14 shows the coupling element and the second counterpart according to Fig. 6 in engagement position.

DESCRIPTION OF PREFERRED EMBODIMENTS

Figures 1 and 2 show a known connector assembly a which is commonly used for connecting a first power line d to second power line b. The first power line d is connected to an electric motor (not shown) of a rolling stock (not shown) like, for example, a locomotive. The second power line b is connected to a first power source like, for example, an overhead railway power grid.

The connector assembly a includes a switching device c which may be switched between a first and a second switching state. In the first switching state (shown in Fig. 1), the first and the second power lines b, d are electrically connected to one another. In the second switching state (shown in Fig. 2), the power lines b, d are disconnected. The known connector assembly a further includes a first connector element / (shown as a socket-side connector in Figs. 1 and 2) which is connectable to a second connector element i (shown as a pin-side connector in Fig. 2), the connector element i being connected, via a third power line h, to a second power source like, for example, the mains in a workshop. Moreover, the first connector element /is connected to a jumper line e. In the second switching state, the switching device c is electrically connected to the first connector element/ via the jumper line e such that the first and third power lines d, h are electrically connected to one another.

The first connecter element / may be protected by a protective cover g. The protective cover g may be pivoted away for inserting the second connector element to the first connector element/

Accordingly, by means of the switching device c, the electric motor may be connected to a first power source via the first and second power lines d, b (first switching state), while the switching device c is switchable so as to disconnect the first and second power lines b, d from one another and to connect to the first and third power lines d, h to one another via the jumper line e, thereby disconnecting the electric motor from the first power source and connecting the electric motor to the second power source (second switching state).

Accordingly, the electric motor may be supplied by either the first or the second power source. Such a connector assembly is commonly used if the locomotive needs revision in the workshop and has to be connected to a second power source.

Further connection lines, such as for control of the traction unit are also established or interrupted by switching devices.

These switching devices are commonly built onto the locomotive, adding to the locomotive's total weight.

In order to reduce the weight and provide a connection scheme, a connector assembly is suggested, which' s basic idea is sketched in Figures 3 and 4. A preferred embodiment is shown in the Figures 5 to 14.

Figures 3 and 4 show each a part of the connector assembly 1 according to invention. The connector assembly 1 comprises a coupling part 2, a first counterpart 3, and a second counterpart 4.

The coupling part 2 is configured to accommodate a first power line 11 and a second power line 12. The first power line 1 1 is connected to an electric motor of locomotive (not shown). The second power line 12 is connected to a first power source (not shown).

Both power lines 11, 12 are continuously shielded by means of shielding elements

105.

The coupling part 2 further comprises a first power line connector 202 which is connected to a first end portion 110 of the first power line 11. Furthermore, the coupling part 2 comprises a second power line connector 205 which is connected to a second end portion 120 of the second power line 12. The first power line connector 202 includes a first receiving part 212. The first receiving part 212 is a socket-side connector element. The second power line connector 205 comprises a second receiving part 215. The second receiving part 215 is a socket-side connector element. The first and second power line connectors 202, 205 are spatially separated.

In order to supply the electric motor by power from the first power source, the first power line connector 202 has to be connected to the second power line connector 205. In order to do so, the first counterpart 3 may be brought into engagement with the coupling part 2. The first counterpart 3 accommodates a first power line connector 302 and a second power line connector 305 which are configured for engagement with the first second power line connectors 202, 205 of the coupling part 2, respectively. Moreover, the first and second power line connectors 302, 305 of the first counterpart 3 are electrically connected to one another by a shunt connection 37. The shunt connection 37 and the first and second power line connectors 302, 305 are shielded by a shielding element 305. Accordingly, in engagement state according to Fig. 3, the first power line 11 and the second power line 12 are connected to one another by means of engagement of the coupling element 2 and the first counterpart 3 and the resulting power line is continuously shielded. Thereby, the electric motor may be supplied by means of the first power source.

Turning to Fig. 4, the coupling part 2 is the same element as coupling part 2 in Fig. 3. The second counterpart 4 is dissimilar from the first counterpart 3 in that it does not connect the first and second power lines 11, 12 to one another but electrically isolates the second power line 12 and connects a third power line 13 and the first power line 11 to one another. In Fig. 4, the second counterpart 4 is in engagement with coupling part 2. The second counterpart 4 accommodates a third end portion 130 of a third power line 13, wherein the third power line is connected to a second power source (not shown).

The second counterpart 4 includes a third power line connector 402. The third power line connector 402 is connected to the third power line 13 and includes a third connecting part 412. The third connecting part 412 is configured for mutual engagement (i.e. for co-operation) with the first receiving part 212 of the coupling part 2. Accordingly, engagement between the coupling part 2 and the second counterpart 4 establishes an electrical connection between the first power line 11 and the third power line 13, thereby enabling supply of the electric motor via the second power source.

The second power line connector 205 of the coupling part 2 is electrically isolated from the first and third power line connectors 202, 302.

Accordingly, it is an aspect of the present invention to exchange the known switching element c by connector assembling 1 including the coupling part 2 and the first and second counterparts 3, 4. Upon engagement of the coupling part 2 and the first counterpart 3, the connection scheme of the first switching state according to Fig. 1 is realized; upon engagement of the coupling part 2 with the second counterpart 4, the connection scheme of the second switching state of Fig. 2 is realized.

A preferred embodiment is now described with reference to Figures 5 to 14. In this embodiment, the first, second, and third electrical lines are power lines. It is to be understood that this power lines may also be other electrical lines as discussed above.

Figure 5 shows, in a perspective view, the coupling part 2 and the first counterpart 3 at distance to one another along an engagement axis L. Distal faces of the parts 2, 3 face one another and define the engagement region.

Now, the first counterpart 3 is described with reference to Fig. 5 and Figure 7, the latter showing a detail of the first counterpart 3.

The first counterpart 3 is - in functional terms - configured for bridging, by means of shunt connections 37 (see Fig. 10), three first power lines 11 and three second power lines 12 pairwise to one another for establishing 3-phase supply of the electric motor by means the first power source.

The first counterpart 3 comprises a generally cuboidal-like casing 30 (length: 235 millimeters, width: 130 millimeters, height: 80 millimeters), in which three first power line connectors 301-303 are arranged. The three first power line connectors 301-303 each comprise a first connecting part 321-323. Moreover, second power line connectors 304- 306 are arranged in casing 30. The three second power line connectors 304-306 each comprise a second connecting part 324-326. The first as well as the second power line connectors 301-306 are arranged spaced to one another, in a row along an axis transverse to L (and P, see Fig. 14) in casing 30; the two rows run parallel to one another such as to form three pairs of first and second connecting parts 321, 324; 322, 325; 323, 326. Additionally, the casing 30 comprises three shunt connections 37 (see Fig. 10), each of the shunt connections 37 connecting pairwise one first connecting part 321-323 to the nearest neighbouring second connecting part 324-326.

Additional connectors may be provided.

In this embodiment, the first counterpart 3 comprises two data line connectors 33, each with four data lines, a further connector 34 for control signals (e.g. for a traction control unit), and an earth connector 35. The connectors 33-35 are also arranged in a row which extends transversely to the rows of the first and second power line connectors 301— 306. The two data line connectors 33 each comprise a connecting part 332 with 4 pins on the distal face of the first counterpart 3 (see Fig. 7). The two connecting parts 33 are connected to one another via connecting element 233 connecting the four data lines individually (see Figure 13). The further connector 34 comprises a connecting part 342 with seven pins on the distal face of the first counterpart 3 (see Fig. 7). The earth connector 35 comprises a connecting part 352 with a pin on the distal face of the counterpart (see Fig. 7)·

The group of first power line connectors 301-303, the group of second power line connector 304-306, and the group of further connectors 33-35 are arranged in blocks 290 which are fastened to the casing 30 by means of screw connections 29.

The casing 30 (and 40) comprises, attached to its proximal face (i.e. at the end which is at distance to be engagement interface), transversely (with respect to L) protruding gripping elements 38. The gripping elements 38 are plate-like elements with free ends that are bent into L-direction. These gripping elements 38 may serve for handling and engagement purposes of the first counterpart 3.

Next, the coupling part 2 is described with reference to Figs. 5, 6 and Figure 8, Fig. 8 showing a detail of the coupling part 2.

The coupling part 2 is - in functional terms - configured for accommodation of the end portions 110 of the three first power lines 1 1 and the end portions 120 of the three second power lines 12 arranged for pairwise connection to one another by means of first counterpart 3. Additional connectors may be provided.

The coupling part 2 includes a generally cuboidal-like casing 20 (length: 235 millimeters, width: 130 millimeters, height: 101 millimeters) which accommodates three first power line connectors 201-203 and second power line connectors 204-206. The three first power line connectors 201-203 each comprise a first receiving part 211-213 and a first connecting part 221-223. The three second power line connectors 204-206 each comprise a second receiving part 214-216 and a second connecting part 224-226. The first and second power line connectors 201-206 of the coupling part 2 are arranged for cooperation with the first and second power line connectors 301-306 of the first counterpart 3, i.e. in blocks 290 in two parallel rows.

Additional connectors 23-25 are arranged in a third transverse row in the coupling part 2 for co-operation with the additional connectors 33-35 of the first counterpart 3. Two data line connectors 23 are arranged in casing 20 for co-operation with the data line connectors 33 of the first counterpart 3, each data line connector 23 with four data lines. One of the connectors 23 is configured for receiving end portions of a data line running parallel to the first power line 11; the other connector 23 is configured for receiving end portions of a data line running parallel to the second power line 12. A further connector 24 for co-operation with the further connector 34 of the first counterpart 3 is arranged in casing 20, the further connector 24 having seven sockets. Finally, an earth connector 25 for co-operation with the earth connector 35 of the first counterpart 3 is arranged. The two data line connectors 23 each comprise a receiving part 231 arranged on the proximal face of the coupling part 2 (see Fig. 5) and a connecting part 232 arranged on the distal face of the coupling part 2 (see Fig. 8). The further connector 24 comprises a receiving part 241 arranged on the proximal face of the coupling part 2 (see Fig. 5) and a connecting part 242 with 9 sockets, 7 of them with connecting means, arranged on the distal face of the coupling part 2 (see Fig. 8). The earth connector 25 comprises a connecting part 252 with a socket and a guiding pin arranged on the distal face of the coupling part 2 (see Fig. 8).

On the side face of the casing 20, there is arranged a further earth connector 28 for grounding the casing 20. The further earth connector 28 includes a receiving part 281 (see Fig. 6). Moreover, casing 20 includes a fastening structure 27 at the short proximal edges. The fastening structure 27 comprises rails that are flush with the proximal face of the coupling part 2 and are provided with through holes extending in L-direction. The fastening structure 27 is adapted for screw connection with a carrier structure of the rolling stock.

In order to connect the coupling part 2 and the first counterpart 3, they may be moved from relative positions as shown in Figs. 5 and 6 along the engagement direction L in order to come into contact.

Accordingly, the connection of the coupling part 2 and the first counterpart 3 establishes the power line between the first power source and the electric motor and a data line and a further auxiliary line running (e.g. for the control of the traction unit) in parallel.

Figure 14 shows the coupling part 2 in engagement with the second counterpart 4. The second counterpart 4 is built the same way as the first counterpart 3, but instead of first and second power line connectors 301-306, third power line connectors 401-403 are arranged as through-connectors with third receiving parts 421-423 on the proximal face of the casing 40 such as to receive three end portions 130 of the three third power lines 13 from outside into the casing 40. The third power line connectors 401^103 also include each a connecting part on the distal face of the second counterpart 4 for connection with the first power line connectors 201-203 of the coupling part. Thereby, a power line from the second power source may be established by connecting the first power line 11 and the third power line 13 to one another.

Moreover, a data line connector 43 with at least one, preferably four data lines and a receiving part 431 is provided on the proximal face of the second counterpart 4. The data line connector 43 further includes a connecting part for connection with the connecting part 232 of the data line connector 23 related to the data line running parallel to the first power line 11. Furthermore, a further connector 44 is provided as a through connector with a receiving part 441 on the proximal face of the casing 40 and with a connecting part on the distal face of the casing 40. The further connector 44 is configured for engagement with the further connector 24 of the coupling part and may be used for establishing an auxiliary line by means of coupling the coupling part 2 and the second counterpart 4.

Accordingly, the connection of the coupling part 2 and the second counterpart 4 establishes the power line between the second power source and the electric motor and a data line and a further auxiliary line (e.g. for the control of the traction unit) running in parallel.

On the casings 20, 30, and 40 is provided an interlocking structure 6, which shall now be described with reference to Figures 9 to 12.

The interlocking structure 6 between the coupling part 2 and the counterparts 3, 4 is a lever-pin coupling. Each counterpart 3, 4 comprises two pivotable interlocking stirrups 61, which interact with engagement pins 7 and locking pins 8, wherein the pins 7, 8 are arranged on the coupling part 2. Each interlocking stirrup 61 comprises two levers 62 which are pivotable about an axis P, axis P being parallel to a short edge of casing 30, 40 and perpendicular to engagement direction L. A fulcrum 63 on either of the long sides of the casing 30, 40 engages one end of the levers 62 with the casing 30, 40. The levers 62 extend along the long sides of the casing 30, 40 and protrude over the casing 30, 40 (generally transversely to L and P) to face one another with free ends. The free ends of the levers 62 of each stirrup 61 are connected to one another by means of a connecting rod 620. Accordingly, the levers 62 and rod 620 are pivotable parallel to the engagement direction L.

Between the fulcrum 63 and the connecting rod 620, the levers 62 comprise recesses 64 (see Figs. 7, 9) to shape the levers 62 fork-like. As can be seen in Fig. 9, the fulcrum 63 is arranged close to a distal edge of the counterpart 3, 4. The levers 62 extend in radial direction such as to protrude over the casing 30. The lever 62 and the recess 64 are arranged such that, upon engagement of the coupling part 2 and the first counterpart 3, the interlocking stirrup 61 may be pivoted around the fulcrum 63 such that the engagement pin 7 is received within the recess 64, between the two jaws of the lever 62. The engagement pin 7 protrudes in a direction parallel to the rotational axis of the lever 62 over the casing 20. At its free end, the pin 7 has a head 71, which has a diameter larger than the pin 7 and which has a diameter that is larger than a clearance of the recess 64, such that the pin 7, once received between the jaws, is secured in a form-fit with respect to the P- direction in the lever 62. A radial depth of recess 64 in lever 62 is provided with a narrow slot 65, which protrudes from the depth of the recess 64 towards the second free end of the lever 62 into lever 62. A width of the sloth 65 is about half of the diameter of the pin 7 and its depth is about as deep as the diameter of the pin 7. Moreover, the recess 64 (or the lever jaws) has rounded edges such that the pin 7 may be received under tensile strain of the lever material such that the lever 62 tightly engages with the pin 7 upon movement from the release position into the interlocking position. For easy reception of the pin 7, the recess has an enlarging clearance toward the fulcrum 63. The jaws may be curved and the recess slit-like shaped such as to allow the pin 7 to glide into recess 64 under pulling the coupling part 2 and the counterpart 3, 4 together into engagement position.

Moreover, the lever 62 has, on its distal long edge a reception arranged in the middle of the lever 62 and extending from the said long edge into the lever 62. The recess is, at its periphery edge, enclosed with a part sleeve 67. The sleeve 67 protrudes over the face of the lever 62 in P-direction. On the casing 20 is, furthermore, arranged the locking pin 8, which is designed and arranged to be received in the part sleeve 67 upon pivoting the interlocking stirrup 61 from release position (see e.g. Fig. 5) into engagement position (see e.g. Fig. 11). The part sleeve 67 is provided with a through hole 68 extending transverse to the P-direction (see e.g. Fig. 7). Moreover, the locking pin 8 is provided with a through hole 81, (see e.g. Fig. 6). The through holes 68, 81 are arranged such that they are aligned when the interlocking stirrup 61 is in interlocking position. This allows that the split pin 69 is introduced into the through holes 67, 81 for securing the interlocking stirrup 61 to the locking pin 8 (see e.g. Figs. 9 and 11). The split pin 69 is spring-type split pin holding the lever 62 in place.

Figure 10 shows a cross section through the connector assembly comprising the coupling part 2 and the first connector part 3 according to Fig. 11. The first power line connector 302 and the second power line connector 305 are connected by the shunt connection 37 such as to electrically connect the second connecting part 225 and the first connecting part 222 to one another.

Moreover, it is apparent, that the levers 62 may engage the pins 7 close to their heads 71.

In Fig. 10, the interlocking structure 6 comprising the interlocking stirrups 61, the engagement pins 7, and the locking pin 8 are shown. As can be seen from Fig. 10, the engagement pins 7 may be provided on both sides of the casing 20 (or 40), i.e. both levers 62 of the stirrup 61 engage in a P-direction form-fit with pins 7 while a locking pin 8 is provided only on one side of the casing 20 (on the right side on Fig. 10).

Figure 11 shows in a front view, the coupling part 2 in engagement position with the first counterpart 3. The two stirrups 61 are in interlocking position and secured with split pins 69. Figure 12 shows a detail of the region around the fulcrum 63 as shown in Fig. 10.

The casings 30, 40 each comprise a guiding structure 9 for guiding the coupling part 2. The guiding structure 9 includes four guiding elements (see Fig. 7) that are arranged at the four corners in the engagement interface between the coupling part 2 and the counterpart 3, 4. The guiding structure is configured for receiving the coupling element 2 in the levers edge region and is adapted for guiding the two engagement parts 2, 3 to one another.

The guiding structure 9 is an L-profile comprising a first plate section 91 and a second plate section 92. The first and second plates sections 91, 92 extend in L-direction and are attached to a corner region of the casing 30, 40. The L-section 9 protrudes with 40 to 50 millimeters in L-direction over the casing 30, 40 and has a quarter funnel-like free end with outwardly bent end portions. The shaped free end acts as alignment structure 93 for receiving the distal corner of the casing 20 of the coupling part 2. Figure 5 shows that each of the four distal corners of the casing 30,40 is provided with an L-section guiding profile 91-93 such as to simultaneously receive all four distal corners of the casing 20 of the coupling part 2 upon mutual engagement along the engagement direction L.

In order to further guide the engagement movement and to secure proper engagement between co-operating connectors, the blocks 290 of the counterparts 3, 4 comprise guiding pins 36 for co-operation with guiding rails 26 arranged in the blocks 290 of the coupling part 2 (see Figs. 7 and 8). The guiding pins 36 protrude along the L-axis toward the rails 29 in coupling part 2. The guiding pins 36 and the guiding rail 26 are arranged at ends of connector group rows such that the guiding pins 36 may be inserted into the opposing respective guiding rails 29 upon engagement of the coupling part 2 and the counterpart 3, 4. The guiding pins and rails 36, 29 support the guiding structure 9 and ensure safe engagement between opposing connectors.

LIST OF REFERENCE SIGNS connector assembly 232 connecting part of 23 first electrical line / first power 233 connecting element of 23 line 24 further connector on 2 connector side end portion of 241 receiving part of 24

1 1 242 connecting part of 24 second electrical line / second

power line 25 earth connector in 2

connector side end portion of 251 receiving part of 25

12 252 connecting part of 25 third electrical line / third

power line 26 guiding rail

connector side end portion of 27 fastening structure

13 28 earth connector on 2

281 receiving part of 28

coupling part 29 screw connection

casing of 2 290 block

-203 first electrical line connector

on 21 first power line connector 3 first counterpart

on 2 30 casing of 3

-213 first receiving part of 201 -203 301-303 first electrical line connector -223 first connecting part of 201 - on 3 / first power line

203 connector on 3

-206 second electrical line connector 321-323 first connecting part of 301 - on 21 second power line 303

connector on 2 304-306 second electrical line connector-216 second receiving part of 204- on 3 / second power line

206 connector on 3

-226 second connecting part of 204- 324-326 second connecting part of 304- 206 306

data line connector on 2

receiving part of 23 33 data line connector on 3 connecting part of 33 71 head of 7

further connector on 3 8 locking pin

connecting part of 34 81 through hole

earth connector on 3

receiving part of 35 9 guiding structure guiding pin 91 first plate section shunt connection 92 second plate section gripping element 93 alignment structure second counterpart a known connector assembly casing of 4 b second power line -403 third power line connector on 4 c switch device

third connecting part of 402 d first power line

-423 third receiving part of 401 -403 e jumper line

f first connector element data line connector on 4 g protecting cap

receiving part of 43 h third power line further connector on 4 i second connector element receiving part of 44

L engagement direction interlocking structure P pivot axis

interlocking stirrup

lever

connecting rod

fulcrum

recess

slot

recess

part sleeve

through hole

split pin engagement pin

Claims

1. Connector assembly (1) for connecting a first electrical side either to a second or to a third electrical side,

wherein the connector assembly (1) is configured to electrically connect at least one first electrical line (11) to at least one second or one third electrical line (12,13), wherein the first electrical line (11) is electrically connected to the first electrical side, the second electrical line (12) is electrically connected to the second electrical side, and wherein the third electrical line (13) is connected to the third electrical side;

wherein the connector assembly (1) comprises a coupling part (2), the coupling part (2) being configured to accommodate first and second end portions (110; 120) of the first and second electrical lines (11,12), respectively, so that the first and second end portions (110;120) are accommodated in said coupling part (2) in an electrically isolated manner from one another, characterized in that

the connector assembly (1) comprises at least or exactly two counterparts (3,4) each for engagement along an engagement axis (L) with said coupling part (2),

wherein a first counterpart (3) of the at least or exactly two counterparts (3,4) is configured to electrically connect, in engagement position with the coupling part (2), the first and second end portions (110; 120) of the first and second electrical lines (11,12), respectively, to one another so as to electrically connect the first and second electrical side to one another,

wherein a second counterpart (4) of the at least or exactly two counterparts (3,4) is configured to accommodate a third end portion (130) of said third electrical line (13) and is further configured to connect, in engagement position with the coupling part (2), the first and third electrical lines (11,13) to one another so as to electrically connect the first electrical side and the third electrical side to one another.

2. Connector assembly (1) according to claim 1, wherein the second counterpart (4) is configured to electrically separate, in engagement position with the coupling part (2), the first and second end portions (110; 120) of the first and second electrical lines (11,12), respectively.

3. Connector assembly (1) according to claim 1 or 2, wherein the first, second, and/or third electrical lines (11;12;13) are electrical power, signal, control, or data lines, wherein, preferably, the first electrical side is an electric motor of the rolling stock, the second electrical side is a first power source for the electric motor, and the third electrical side is a second power source for the electric motor.

4. Connector assembly (1) according to any one of claims 1 to 3, wherein said first coupling part (2) is configured to accommodate at least one or a plurality of first and second end portions of first and second data, control, signal or further electrical lines, respectively,

wherein the first counterpart (3 ) is further configured to connect, in engagement position with the coupling part (2), the first and second end portions of the first and second data, control, signal or further electrical lines, respectively, to one another; and

wherein, preferably, the second counterpart (4) is configured to accommodate at least one or a plurality of third end portions of at least one third data, control, signal or further electrical line and wherein the second counterpart (4) is configured to connect, in engagement position with the coupling part (2), the first and third end portions of the first and third data, control, signal or further electrical lines, respectively, to one another.

5. Connector assembly (1) according to any one of the preceding claims, wherein a shape of the coupling part (2) and shape of the first and/or second counterpart (3;4) are cuboidal.

6. Connector assembly (1) according to any one of the preceding claims, wherein coupling part (2) and the first counterpart (3) comprise at least one, preferably three first and at least one, preferably three second electrical line connectors (201-203,204- 206,301-303,304-306) to connect the first and second electrical lines (11,12), and wherein the second counterpart (4) comprises at least one, preferably three third electrical line connectors (401-403) to connect the first and third electrical lines (11,13), wherein the first, second and third electrical line connectors (201- 203,204-206,301-303,304-306,401-403) are preferably arranged in rows, the rows extending preferably parallel to another, and/or are electrically floating.

7. Connector assembly (1) according to any one of the preceding claims, wherein the coupling part (2) and/or the first and/or second counterparts (3,4) are electrically insulating such as to be touch proof.

8. Connector assembly (1) according to any one of the preceding claims further comprises an interlocking structure (6) for holding or locking the coupling part (2) and the first or second counterpart (4) together after engagement.

9. Connector assembly (1) according to the preceding claim, wherein said interlocking structure (6) comprises at least one interlocking stirrup (61) that is attached to the coupling part (2), the first counterpart (3), or the second counterpart (4), wherein the interlocking stirrup (61) is pivotable about a pivot axis (P) transvers to the engagement axis (L) between a release position and an interlocking position for releasing and for interlocking the coupling part (2) with the first counterpart (3) and/or the second counterpart (4), respectively.

10. Connector assembly (1) according to any one of the two preceding claims, wherein the interlocking structure (6) further comprises at least one engagement pin (7), the interlocking stirrup (61) and the engagement pin (7) being configured and arranged for mutual engagement such as to interlock the coupling part (2) with the first counterpart (3) and/or the second counterpart (4) when the interlocking stirrup (61) is in the interlocking position, wherein the interlocking stirrup (61) and the engagement pin (7) are arranged on separate elements of a group of elements, the group consisting of the coupling part (2), the first counterpart (3), and/or the second counterpart (4).

11. Connector assembly (1) according to any one claims 9 and 10, wherein the interlocking stirrup (61) comprises a lever (62) for levering the coupling part (2) and first or second counterpart (3;4) into engagement position.

12. Connector assembly (1) according to any one of the two preceding claims, wherein the first and/or second counterpart (3;4) comprise at least one locking pin (8), wherein the interlocking stirrup (61) comprises a reception (67), wherein the reception (67) and the locking pin (8) are configured for mutual form-fit engagement in engagement position of the coupling part (2) and the first and/or the second counterpart (3;4),

wherein, preferably, the reception (67) is a partial sleeve (67), and wherein, preferably, the partial sleeve (67) and the locking pin (8) are provided with a first through hole (68) and second through hole (81), respectively, wherein the first and second through holes (68,81) are arranged such as to align if the interlocking stirrup (61) is in the interlocking position, and wherein the connector assembly (1) preferably comprises a pin (69) configured to be pushed through the aligned through holes (68,81) for interlocking the interlocking stirrup (61) and the locking pin (8).

13. Connector assembly (1) according to any one of the preceding claims, further including shielding structures (105) such that the coupling part (2) and the first or second counterpart (3 ;4) are configured to accommodate the first and second end portions (110; 120) of the first and second electrical lines (1 1 ;12) and the first and/or third end portions (110; 130) of the first and/or third electrical line (l l;13), respectively, in a shielded manner.

14. Connector assembly (1) according to any one of the preceding claims, further comprising a guiding structure (9) for facilitating engagement or disengagement of the coupling part (2) and the first or second counterpart (3 ;4), wherein, preferably, the guiding structure (9) comprises at least one, preferably a plurality of guiding rails (91,92,93), the guiding rails (91,92,93) being arranged on the casing (20;30;40) and protruding over said casing (20;30;40) in a direction parallel to the engagement axis (L) and, wherein preferably, at least one, preferably all guiding rails (91,92,93) comprise a free end with an alignment structure (9) for aligning the coupling part (2) and the first or second counterpart (3;4) to one another.

15. Rolling stock, in particular a train composition or a locomotive, comprising a coupling part (2) and further comprising a first counterpart (3) or a second counterpart (4) of a connector assembly (1) according to any one of the preceding claims, wherein, preferably, the first electrical side is an electrical motor of the rolling stock and the second electrical side is a first power source, and the third electrical side, if any, is a second power source.