EP2069843A1 - Systeme a fiches pour coupler au moins une fibre optique - Google Patents

Systeme a fiches pour coupler au moins une fibre optique

Info

Publication number
EP2069843A1
EP2069843A1 EP07803605A EP07803605A EP2069843A1 EP 2069843 A1 EP2069843 A1 EP 2069843A1 EP 07803605 A EP07803605 A EP 07803605A EP 07803605 A EP07803605 A EP 07803605A EP 2069843 A1 EP2069843 A1 EP 2069843A1
Authority
EP
European Patent Office
Prior art keywords
plug
interface
fixing
fixing element
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07803605A
Other languages
German (de)
English (en)
Inventor
Andreas Bausewein
Henryk Frenzel
Joachim Hahn
Pia Kopf
Thorsten Krah
Heinrich Probst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
TE Connectivity Germany GmbH
Original Assignee
Tyco Electronics AMP GmbH
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Electronics AMP GmbH, Continental Automotive GmbH filed Critical Tyco Electronics AMP GmbH
Publication of EP2069843A1 publication Critical patent/EP2069843A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01006—Mounting of electrical components in vehicles

Definitions

  • Plug-in system for coupling at least one optical fiber
  • the present invention relates to a plug-in system for coupling at least one optical fiber. It is known from the prior art with various embodiments that such plug-in systems are equipped with a male plug head and a female interface designed as a receptacle for the plug or an interface.
  • plug-in systems or connectors can also be used, for example, in crash sensors of modern passenger vehicles.
  • the present invention will now be described only with reference to the automotive sector.
  • the automotive and motor vehicle sector is particularly hard due to the requirements, but also offers very large sales figures, so that this constellation is justified on only this one application by the economic conditions.
  • the vehicle must prove crashworthiness with the pedestrian.
  • the technical implementation of these requirements can be realized in different ways.
  • passive solution is the Vehicle front and hood designed so that the impact is intercepted due to the compliance in the limits. This requires a special bonnet and deformation space under the bonnet.
  • active solution the pedestrian crash is detected and after detection
  • the detection of the crash with a pedestrian can be done by means of various sensor principles.
  • the crash can be detected on the one hand by suitably arranged acceleration or G sensors or by so-called contact sensors which are arranged in the region of the possible impact.
  • the contact sensors are possibly placed over the entire front area in the front bumper area. This area is very critical of the environmental conditions for shock, water, humidity, etc.
  • a typical implementation of the contact sensor consists of the actual contact sensor and an electronics box.
  • the contact sensor is in this case a fiber-optic sensor, short FOS, and is coupled to the electronics via a so-called opto-electronic interface, short OE interface, with the circuit board on which another circuit is arranged by printed interconnects.
  • the elements that are not directly involved in the sensing must not have a short-term cause acute and / or rapid changes. It follows for a coupling element of the fibers to the transmitter and receiver LEDs within the OE interface that this must be robust and secure with respect to short-term and fast but also large long-term changes.
  • the goal is to fix a plug in such a way that the polished fiber ends are fixed in a positionally stable manner to the LEDs and photodiodes provided in an interface in a defined position. It would be advantageous if a fiber connector would always pressed rattling against a stop within the OE interface part. Such a pressure could be realized by the skilled person in general via at least one screw or by means of springs. Any such solution, however, would require either several manipulations in the course of fixing a plug in the associated interface and thus a considerable working time with tool insert, or in the production of the number of components either in the area of the interface, or on the fiber connector increase and thus make the plug-in system more expensive overall.
  • this pressing and fixing is provided by means of two separate fixing elements for permanently pressing the plug against a stop within the female interface component, wherein the fixing elements are arranged opposite one another and movable substantially perpendicular to a contact pressure.
  • One An inventive plug-in system with a male plug head and a female interface designed as a receptacle for the plug or an interface is thus characterized in that two fixing elements for permanent pressing of the plug to a stop, which are arranged within the female interface component is provided opposite to each other on the plug head or the receptacle.
  • An operation is facilitated by the fact that the fixing elements are designed to be movable substantially perpendicular to the pressing force.
  • these fixing elements are resilient locking levers, which are arranged either on the interface or on the plug so that they engage in corresponding oblique recesses on the respective other element latching and thereby build a permanent acting contact pressure ,
  • These fixing elements are preferably integrally connected to the relevant element of the plug-in system.
  • the fixing elements are designed as U-, C- or V-shaped fixing lever, which are displaceably mounted in at least one recess of the interface between an open and a fixed position. Due to the opposition of the displacement movements of the oppositely arranged fixing levers substantially perpendicular to a contact force to be generated, it is advantageously ensured under improved dosability of the applied force that a fixing force itself does not have a printed circuit board or PCB or other sensitive Parts or components is intercepted. Rather, the force is absorbed completely and reliably in the area of the plug connection, in particular in the interface, without any mechanical stress or even deformation of other elements. To secure these in one embodiment as separate elements and thus not integral with their support fixing elements against falling out, locking means and / or retaining lug are provided on the fixing elements. This creates a limitation of a displacement movement between two defined end positions.
  • Fixing elements of the above-mentioned type are preferably formed before stoffstofflich ⁇ . So they consist of the same plastic material, such as the interface and the Fa ⁇ serstecker.
  • FIG. 1 shows a simplified 3-dimensional view of a plug-in system to ⁇ sammen mergeen without optical waveguide and circuit substrate;
  • FIG. 2 shows an illustration of a longitudinal section through the assembled connector according to FIG. 1;
  • Figure 3 is a plan view of the interface part of the plug ⁇ systems without the plug in an open and non-locked state
  • FIGS. 4a and 4b show a two-dimensional view of a locked, non-assembled plug-in system without optical waveguides and circuit carriers;
  • Figures 5a - 5c A sequence of figures for assembling and locking a plug-in system without representation of Lichtwel ⁇ lenleiter and circuit winners;
  • Figures 6a and 6b two embodiments of a detail of Figure 5c and
  • Figures 7a and 7b two simplified 3-dimensional views of a fixing element for the representation of an internal structure as well as externally visible in use visible surfaces.
  • a female plug and a male plug are relatively undefined with each other.
  • these plugs realize a relatively tight fit at a respective pad and, due to appropriate design, selectively press a metal contact of the femur onto a male contact. Due to the relatively loose outer seat in the area of the plastic housing parts over-determination of the contact point is prevented.
  • FIG. 1 shows a simplified three-dimensional view of an assembled plug-in system 1 from a male plug head 2 or fiber plug and a female interface or interface 3 designed as a receptacle for the plug.
  • the plug head is shown 2 without optical waveguide and the interface 3 without the circuit board or PCB carrying them and in the interface 3 even without transmitting and receiving LEDs contained therein as well as associated electronics.
  • the two separate and oppositely arranged fixing elements 4 are realized in the form of sliders, which fix the fiber connector 2.
  • the slides 4 have a substantially U-shaped basic structure. They are displaceably designed in the interface 3 such that the fixing force for pressing the fiber connector 2 against the interface 3 is not intercepted by the circuit carriers or a PCB or by other sensitive parts or components.
  • the interface 3 has four connecting portions 6 from which solderable punching legs 7 protrude in pairs for connection to a circuit carrier a standard hole button accordingly.
  • these connection areas 6 only serve to mechanically fix the interface component 3 on the carrier of a printed circuit, but not to absorb or dissipate forces that occur in the interface 3 as part of a fixing and locking of a fiber connector 2.
  • the punching legs 7 can be introduced or pressed into recesses of a circuit carrier (not shown) for positioning the entire interface component 3, wherein soldering is subsequently provided at least for electrical connections 8 of an electronic unit (not shown).
  • the pressure forces and the Design should be designed so that all mechanical influences are compensated. This is realized by supporting the fixing elements 4 designed as slides within the OE interface 3 and the oblique plane between the slides and the plug 2 to be fixed. The opposing forces required for locking the fiber connector 2 in the interface 3 cancel each other out in the interface 3 as a carrier, without in particular stressing the electrical connections 8 etc. by a moment.
  • FIG. 2 shows a longitudinal section through the fiber connector 2 according to FIG. 1, composed of two individual connectors by latching, for the representation of recesses 13 in the interface 3 and recesses 14 on the fiber connector 2, into which one leg 11 with two free leg ends 12 of a slider 4 engage at the same time.
  • the selected basic structure of the fixing element 4 secures very effectively against jamming with good guidance of this element and also provides several positions for arranging latching means 15, which will be discussed below.
  • latching means 15 which will be discussed below.
  • the free leg ends 12 of each fixing element 4 are guided in the groove-shaped recesses 13 in the interface 3 and held secured against falling out in a first end position, for example, before the fiber plug 2 is inserted into the interface 3. Then grab thickened flanks 15 of the legs 11 in the corresponding four recesses 14 on the fiber connector 2 a.
  • An overall force acting on the fiber plug 2 is divided into four uniformly acting, split smaller forces F, which attack in a common plane at different points of the fiber connector 2. Under this after completion of the fixation permanently persistent total force is an end portion of the fiber connector 2 over the lifetime away safely in defined Anpress Schemeen A stops 17 pressed within the interface component 3, as indicated in Figure 2 by the dashed circles.
  • FIGS. 4a and 4b illustrate the compact structure of fiber plug 2 and interface 3 on the basis of two clear 3-dimensional views of a locked but not assembled plug-in system without optical waveguides and circuit carriers.
  • FIGS. 5a-5c illustrates a time sequence of the simple substeps during assembly and locking of the plug-in system 1 of FIG. 1, again for the sake of clarity, without depiction of optical waveguide and circuit carrier.
  • the fiber plug 2 is inserted into the interface 3, wherein at a free end 18 of the fiber connector 2, a chamfer 19 is provided to facilitate positioning.
  • the fiber plug 2 has a nose 20 which, together with a recess 21 on the interface 3 causes a safety catch in the stage in which the plug-in system 1 is not yet locked.
  • the nose 20 engages in the recess 21 already, so that the position of the two elements is at least temporarily secured to each other.
  • FIG. Figure 5c shows Finally, the stationary end position in which the latched fixing elements 4 exert on the fiber connector 2 a contact force by which the fiber plug 2 is securely fixed in a defined position in the interface 3 under substantially elastic preload over the life.
  • FIGS. 6a and 6b show two embodiments of a detail of FIG. 5c. It can already be seen in the representation of FIG. 4a that a limb 11 of the fixation element 4 has a phase 23 in the region of the thickened flank 15.
  • FIGS. 4a and 4b show that, in this exemplary embodiment, the recesses 14 on the fiber connector 2 run parallel to a force effect according to FIGS. 5a to 5c.
  • the recess 14 on the fiber connector 2 at least in an initial region an oblique position by an angle ⁇ , which corresponds approximately to the angle of the chamfer 23 on the thickened edge 15 of the leg 11 of the fixing element 4.
  • the Findungstrichter recess 14 opens on the fiber connector 2 in a parallel to the direction of action of the force F aligned course.
  • a return force on the fixing element 4 is not present in the design according to FIG. 6b since the boundary surfaces are in contact with each other when the fixing element 4 is pressed in fully. Rallel and normal to the desired contact force are aligned.
  • FIGS 7a and 7b show in magnification two simplified 3-dimensional views of a fixing element 4 for the representation of an internal structure and from the outside in the use of visible surfaces again.
  • the fixing element 4 comprises, as a C-shaped or U-shaped component, a connecting piece 10 with limbs 11 arranged at the end. It would thus be constructed almost mirror-symmetrically, but is constructed asymmetrically with regard to various latching means.
  • two fixing elements 4 are provided, which are arranged point symmetrical to each other in correspondingly leading recesses in the body of the interface component 3 are used.
  • a resilient latching arm 25 prevents the fixing element 4 from slipping out of the interface component 3 in the opened state, eg. during transport or during assembly on a circuit board.
  • the fixing element 4 has with the latching arm 25 a means for pre-locking of the fixing element 4 in a recess 26 of the interface component 3 in an open starting position.
  • a locking lug 27 on a slot 28 results in a resiliently formed in engagement with a recess 29 latching in a closed end position. Due to the shape of the latch, the fixation can also be canceled, but not automatically uncontrollably solvable.
  • PBT polybutylene terephthalate
  • PBTP polybutylene terephthalate
  • the above exemplified solution according to the present invention guarantees a simple and safe operation of a plug-in system 1.
  • Expensive and / or cumbersome and comparatively time-consuming fixation methods such as e.g. Screws, springs or even gluing, are not required according to the invention.
  • the fixation is also solvable again.
  • the OE interface 3 is despite the many advantages and tough requirements due to the manageable number of items relatively inexpensive to produce. Possibly by the operation or fixation of the plug-in system 1 occurring harmful forces or mechanical stresses are not forwarded to other components or even a circuit board. Due to the connection areas, the compact interface provides sufficient protection even for the electrical connections to a circuit board for continuous operation with mechanical loading of the plug-in system.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

La présente invention concerne un système à fiches pour coupler au moins une fibre optique. L'invention vise à créer sous forme d'un système à fiches un élément de couplage petit et simple à manier, mais aussi de fabrication peu coûteuse malgré les exigences élevées en termes de durée et de fiabilité. À cet effet, deux éléments de fixation (4) sont prévus pour la pression durable de la fiche (2) sur une butée (17) à l'intérieur de l'élément d'interface femelle (3), lesquels sont disposés de façon mobile en vis-à-vis l'un de l'autre et de manière sensiblement perpendiculaire à une force de pression.
EP07803605A 2006-09-27 2007-09-25 Systeme a fiches pour coupler au moins une fibre optique Withdrawn EP2069843A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006046004A DE102006046004A1 (de) 2006-09-27 2006-09-27 Stecksystem zum Ankoppeln mindestens einer optischen Faser
PCT/EP2007/060161 WO2008037712A1 (fr) 2006-09-27 2007-09-25 Système à fiches pour coupler au moins une fibre optique

Publications (1)

Publication Number Publication Date
EP2069843A1 true EP2069843A1 (fr) 2009-06-17

Family

ID=38871964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803605A Withdrawn EP2069843A1 (fr) 2006-09-27 2007-09-25 Systeme a fiches pour coupler au moins une fibre optique

Country Status (3)

Country Link
EP (1) EP2069843A1 (fr)
DE (1) DE102006046004A1 (fr)
WO (1) WO2008037712A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008018927A1 (de) * 2008-04-15 2009-11-12 Pepperl + Fuchs Gmbh Optischer Sensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534616A (en) * 1982-05-24 1985-08-13 Amp Incorporated Fiber optic connector having lens
DE3688252T2 (de) * 1985-12-26 1993-11-11 Whitaker Corp Verbindungsstück mit optischen fasern.
SE504811C2 (sv) * 1995-08-21 1997-04-28 Ericsson Telefon Ab L M Kopplingsdon samt anordning vid elektrooptisk krets
DE19922250A1 (de) * 1999-05-14 2000-11-16 Delphi Tech Inc Steckverbinder
US20050013559A1 (en) * 2003-07-16 2005-01-20 Agilent Technologies, Inc. Interface adaptor
KR100640357B1 (ko) * 2004-09-13 2006-10-30 삼성전자주식회사 플러그형 광송수신 모듈 어셈블리
KR100703288B1 (ko) * 2004-11-03 2007-04-03 삼성전자주식회사 플러그형 광송수신기 모듈의 체결 장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008037712A1 *

Also Published As

Publication number Publication date
DE102006046004A1 (de) 2008-04-03
WO2008037712A1 (fr) 2008-04-03

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