DE202011005209U1 - Plug or socket contact - Google Patents

Abstract

Plug contact (1) or socket contact (13) for an electrical connector with a receiving chamber (3) for an electrical conductor (4) to be connected to the plug contact (1) or socket contact (13), characterized in that the receiving chamber (3) has a The plug pin (15) or the area between the receiving chamber (3) and the receiving socket (14) penetrating through-channel (5) is upstream in the plug-in direction and that in the final assembly state an electrical conductor (4) lies in the receiving chamber (3) and an electrical conductor ( 4) connected optical waveguide (6) penetrates the through-channel up to the free end of the connector pin or the end of the receiving socket (14).

Description

The invention relates to a plug or socket contact. More particularly, the invention relates to the use of a male and female contact as a control circuit of optoelectronic devices coupled via fiber optic cable and electrical line.

An optoelectronic device is understood in the present invention to mean such an apparatus which, by means of the photoelectric effect, is again able to perform electrical work, in particular photovoltaic cells, or converts the electrical energy into light waves.

In opto-electronic devices, their electronic control is usually in response to a previously transmitted optical signal; In optoelectronic devices, an optical control based on a previously transmitted electrical signal can also be complementary. In both cases, the overall control is effected by feedback of two physically independent signal transmission systems, namely by electrical lines and by optical fibers. Further examples of optoelectronic devices are devices with phototransistors, light and / or laser diodes, z. B. photocells for a particularly everyday commodity.

In particular, photovoltaic cells are controlled both via electrical and optical signals, in particular when photovoltaic cells are combined to form solar modules. Especially in case of fire, photovoltaic cells or entire solar modules must be switched off to z. B. To avoid short circuits caused by extinguishing water or to exclude a threat to firefighters by electric shock, which could be caused by their contact with burnt lines to photovoltaic cells or solar panels.

Although the state of the art suggests DE 10 2006 012 762 A1 a connector assembly for an electrical and optical fiber cable before, however, requires the previously described, optically-electrically feedback overall control of optoelectronic devices, the double number of lines and terminals compared to a purely electrical or purely optical fiber control. This is particularly disadvantageous in an increased space requirement of such circuits, in particular for their wiring and connections. In particular device systems in modular design then require more complicated Mehrfachstecksysteme with increased space requirements. The more complicated such systems have to be designed constructively, the more susceptible are these z. B. with respect to contact interruption or mechanical stress. The increased space requirement as well as the doubly necessary number of contacts considerably restricts the miniaturization possibility of such modules and increases their weight. Also require assembly and disassembly of such modules disadvantageously higher workload while increasing the risk of mechanical damage.

The invention has for its object to simplify the electrical connector for connecting combined electrical conductors and optical fibers constructive. This object is achieved by the feature combination of claim 1 in an inventive manner. The dependent claims include in part advantageous and in part self-inventive developments of the invention.

According to claim 1, the invention has a plug or socket contact for an electrical connector with a receiving chamber for an electrical connection to be connected to the plug or socket contact electrical conductor. In the case of the plug, the receiving chamber is preceded in the direction of insertion by a plug pin or, in the case of the socket, by the passage between receiving chamber and socket. In the final assembled state, an electrical conductor is located in the receiving chamber and an optical waveguide connected to the electrical conductor passes through the through-channel to the free end of the plug pin or to the end of the socket. In this way, two physically independent line systems are integrated particularly advantageous, which represent a compact form according to the so-called coax principle.

To solve the problem, it is necessary to also simplify the design of a combination of an electrical conductor with an optical waveguide. In an inventive manner is proposed as a structural simplification that the optical waveguide is enclosed by a strand, wherein the strand is made of an electrically conductive material.

In continuation of the invention as a strand, in particular as a copper wire, trained electrical conductor is provided with a centrally embedded optical waveguide. In this case, the optical waveguide can also be bundled together from a plurality of photoconductive fibers. The optical fiber is generally made of glass in the thermodynamic sense of a transparent, solid, amorphous and non-ergodic material. This includes, in particular, plastics fibers as synthetic polymeric fibers (POF), e.g. B. from polymethylmethacrylate (PMMA), with a. Compared to quartz optical waveguides, POFs have a significantly reduced specific density. Also particularly advantageous is the enclosure of the Optical fiber through the strand of its protection against mechanical damage safely, without causing the conductor loses flexibility.

In this connection, the strand has an insulation and preferably a further sheath. Both serve not only to protect against electric shock, short circuit or mechanical damage, but also prevents particularly advantageous with sufficient thickness of the sheath excessive bending of the conductor, which could lead to breakage of the inner light guide.

The invention particularly relates to a respective rotationally symmetrical plug or socket contact with a respective central, the center-longitudinal axis of the plug and socket contact forming passageway.

In this embodiment, both plug and socket can be rotated against each other particularly advantageous in the final assembled state of the connector, without the stability and / or positive locking of the connection are adversely affected. This rotational flexibility not only facilitates the labor of assembly, but increases the flexibility of the connected elements as a whole and prevents mechanical twisting of the electrical conductor.

In an advantageous embodiment, the passage channels of the male and female contacts are aligned with each other in the assembled final assembled state of the connector. This ensures that upon rotation of the male connector parts against each other, the internal light pipe in the passage is not interrupted or no mechanical line break can occur. In this case, the increasing length of the aligned through channels increases the stability of the optical waveguide or the optical waveguide. In the final assembled state is a permanent contact between cross-section plan juxtaposed pieces of optical fiber or between optical fibers, from which the light pipe is composed, guaranteed.

In a further embodiment of the invention, the optical waveguide is made of a material which is destroyed at a lower temperature than the electrical conductor. It is then still possible that in case of overheating, for. B. in a fire, at least over the electrical conductor a connected device can be controlled. Such a device is for example particularly advantageous for the control of light barriers automatically controlled doors, with an irreversible interruption or destruction of the light pipe immediately triggers the permanent opening of the doors as a safety circuit, so escape routes are not blocked in case of fire.

In a narrower context, the invention relates to the use of the plug and socket contact according to the invention as a shutdown device of photovoltaic cells in case of fire. In the case of overheating of solar modules, especially in case of fire, they can be switched off automatically via a coupled via a relay to the optical line electrical line, if the optical conductor by destruction, for. B. by melting, due to the interrupted light line triggers the shutdown and the coupled electrical conductor as previously required under these conditions is sufficiently stable. The shutdown is carried out by a break in contact or the short-circuiting of each module preferably each near the individual photovoltaic cells; this is particularly advantageous in contrast to the prior art ensure that even with local fires or only just emerging fires, a complete system of coupled solar modules fully automatically, permanently and safely shuts off.

The invention will be explained in more detail using an exemplary embodiment with reference to the drawings. In detail, they show:

1 the plug contact according to the invention,

2 the socket contact according to the invention,

3 a to be connected to the plug contact or socket contact electrical conductor,

4 the plug of the connector with inserted plug contact,

5 the socket of the connector with female socket contact,

6 the plug contact and the socket contact according to 1 and 2 in plugged Montageenddarstellung.

The plug contact 1 points in the direction of its central longitudinal axis 2 first a receiving chamber 3 for an electrical conductor to be connected 4 on. The reception chamber 3 is in the direction of the center-longitudinal axis 2 a passageway 5 for an optical fiber 6 upstream. The passageway 5 is realized as a simple longitudinal bore.

The plug contact 1 is rotationally symmetrical. On its cylindrical outer jacket carries the plug contact 1 a central investment jaw 7 ,

The investment jaw 7 is from a hole 8th intervening, which serves for galvanization purposes during production.

The reception chamber 3 is at her open free end with an introductory slope 9 Mistake. In the area of the open Freiendes the receiving chamber 3 of the plug contact 1 carries the plug contact 1 on its cylinder outer shell of a groove 10 mutually separate abutment rings 11 , The attachment rings 11 serve as well as the plant jaw 7 for storage of the plug contact 1 in a connector housing 12 , The socket contact 13 is also rotationally symmetrical to its central longitudinal axis 2 built up. The socket contact 13 also has a receiving chamber 3 for the leader 4 on. At his the receiving chamber 3 in the direction of the central longitudinal axis 2 opposite end has the socket contact 13 a receiving socket 14 for the connector pin 15 of the plug contact 1 on. Between the receiving socket 14 and the receiving chamber 3 of the socket contact 13 is in turn a through channel 5 for an optical fiber 6 also at the socket contact 13 intended.

The socket contact 13 is otherwise identical to the plug contact 1 , He also has a central investment jaw 7 with a hole 8th on. Also, the receiving chamber points 3 at its free end the introduction slope 9 on. The area adjacent to the free end of the cylinder jacket of the socket contact 13 again has attachment rings 11 on, which through a groove 10 are separated from each other.

The plug contact 1 and the socket contact 13 are made of an electrically conductive material, in the embodiment of brass.

With the help of a contact carrier 16 is the plug contact 1 in the connector housing 12 fixed. On the connector housing 12 is a cap nut at the end 17 screwed on, with which one the conductor 4 applied strain relief 18 is biased.

Analogous is in the socket housing 19 the socket contact 13 also with the help of a retaining clip 16 fixed. Also the socket housing 19 is end with the help of a cap nut 17 screwed, which in turn a strain relief 18 for the leader 4 biases.

Finally, at the the receiving socket 14 cladding area of the female housing 19 a ring seal 20 arranged. The ring seal 20 seals the plug connection with plug housing 12 and socket housing 19 against dust and moisture. plug housing 12 and socket housing 19 are multi-part and made of an insulating material, in the embodiment made of plastic.

The electrical conductor 4 consists of a central optical fiber 6 , one the optical fiber 6 enclosing optionally tinned copper wire 21 , a double insulation surrounding the copper strand in turn 22 and a highly abrasion resistant outer sheath 23 , The outer jacket 23 , the double insulation 22 and the optional tinned copper wire 21 surround the fiber optic cable 6 layered like onions of an onion. The optical fiber 6 is thus in the ladder 4 centrally embedded.

The optical fiber 6 is configured in the embodiment as a plastic fiber, in particular PMMA. PMMA softens from 160 ° C and decomposes at 180 ° C. Compared to the melting point of copper at 1085 ° C is at an overheating, z. As in the case of a fire, the optical fiber 6 rather than the strand 21 destroyed. This is when using the plug contact 1 and socket contact 13 as shutdown device of photovoltaic cells ensures automatic shutdown of these optoelectronic devices.

It can be seen that the optical fiber 6 both from the copper strand 21 as well as from the double insulation 22 as well as from the outer jacket 23 is enclosed. This multiple insulation favors a trouble-free data transmission under high stress through the optical waveguide 6 , Furthermore, the optical fiber 6 due to this structure, the layers surrounding it onion-shell-like are particularly well protected against breakage.

In the plugged final installation state ( 6 ) is the connector pin 15 of the plug contact 1 positively in the receiving socket 14 of the socket contact 13 inserted. As a result, plug contact 1 and socket contact 13 conductively connected. Here, the passageway is aligned 5 of the plug contact 1 with the passageway 5 of the socket contact 13 , The copper strands 21 are positively in the receiving chambers 3 of the plug contact 1 and the socket contact 13 used and connected inseparably via crimp technology. The optical fibers 6 run congruent with the central longitudinal axis 2 ,

An electrical line is through contacts of the stripped ends 24 the copper strands 21 with the plug contact 1 or with the socket contact 13 guaranteed.

The copper strand 21 fills the receiving chambers 3 of the plug contact 1 or the socket contact 13 out. At the ends of the ladder facing each other 4 stand the optical fibers 6 in the direction of the central longitudinal axis 2 over the receiving chambers 3 in addition and enforce their assigned passageway 5 , Here are the two ends of the two light guides 6 in plan cross-section at the end of the connector pin 15 and at the receiving chamber 3 opposite end of the passageway 5 of the socket contact 13 to each other, so that a fiber optic contact at the contact point 25 is trained. The ends of the two optical fibers 6 are circular and have one to the central longitudinal axis 2 extending right-angled edge; This ensures that upon rotation of the plug contact 1 and the socket contact 13 against each other, the inside in the passageways internal light pipe is not interrupted and no mechanical line break can occur.

In the final assembled state are the plug contact 1 and the socket contact 13 not only in each other, but also in the housings 12 and 19 according to form fit 4 and 5 This ensures high stability and resistance to breakage.

LIST OF REFERENCE NUMBERS

1

plug Contact

2

central longitudinal axis

3

receiving chamber

4

electrical conductor

5

Through channel

6

optical fiber

7

locating jaw

8th

Drilling for electroplating purposes

9

chamfer

10

groove

11

Anlagenring

12

plug housing

13

female contact

14

receiving socket

15

Connector pin

16

contact support

17

Hutmutter

18

Strain relief and seal

19

socket housing

20

ring seal

21

Kupferliltze

22

insulation

23

outer sheath

24

stripped copper strands

25

Fiber optic contact point

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102006012762 A1 [0005]

Claims (8)

Plug contact ( 1 ) or socket contact ( 13 ) for an electrical connector having a receiving chamber ( 3 ) for one to the plug contact ( 1 ) or socket contact ( 13 ) to be connected electrical conductors ( 4 ), characterized in that the receiving chamber ( 3 ) a the plug pin ( 15 ) or the area between the receiving chamber ( 3 ) and receiving socket ( 14 ) passing through channel ( 5 ) is upstream in the plugging direction and that in the final assembled state, an electrical conductor ( 4 ) in the receiving chamber ( 3 ) and one with the electrical conductor ( 4 ) connected optical waveguide ( 6 ) the passageway each to the free end of the connector pin or the end of the receiving socket ( 14 ) interspersed. Plug contact ( 1 ) or socket contact ( 13 ) according to claim 1, characterized by a litz wire ( 21 ), in particular as a copper strand, formed electrical conductors ( 4 ) with a centrally embedded optical waveguide ( 6 ). Plug contact ( 1 ) or socket contact ( 13 ) according to claim 2, characterized in that the strand ( 21 ) an insulation ( 22 ) and preferably a further sheath ( 23 ) having. Plug contact ( 1 ) or socket contact ( 13 ) according to one of claims 1 to 3, characterized in that the plug contact ( 1 ) and socket contact ( 13 ) are each rotationally symmetrical with a respective central, the central longitudinal axis ( 2 ) of the plug contact ( 1 ) and the socket contact ( 13 ) forming passageway ( 5 ). Plug contact ( 1 ) or socket contact ( 13 ) according to one of claims 1 to 4, characterized in that the passageways ( 5 ) of the plug contact ( 1 ) and the socket contact ( 13 ) are aligned with each other in the assembled final assembled state of the connector. Plug contact ( 1 ) or socket contact ( 13 ) according to one of claims 1 to 5, characterized in that the optical waveguide ( 6 ) at a lower temperature than the electrical conductor ( 4 ) gets destroyed. Use of a plug contact ( 1 ) and socket contact ( 13 ) according to one of claims 1 to 6 as a coupled via fiber optic cable and electrical line control circuit of optoelectronic devices. Use of a plug contact ( 1 ) and socket contact ( 13 ) according to one of claims 1 to 7 for monitoring and monitoring of photovoltaic cells or modules of photovoltaic cells, in particular as shutdown of photovoltaic cells or modules of photovoltaic cells in case of fire.

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