EP1331345B1 - Dispositif de commutation de sécurité - Google Patents

Dispositif de commutation de sécurité Download PDF

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Publication number
EP1331345B1
EP1331345B1 EP02027730A EP02027730A EP1331345B1 EP 1331345 B1 EP1331345 B1 EP 1331345B1 EP 02027730 A EP02027730 A EP 02027730A EP 02027730 A EP02027730 A EP 02027730A EP 1331345 B1 EP1331345 B1 EP 1331345B1
Authority
EP
European Patent Office
Prior art keywords
light
optical waveguide
switching device
safety switching
external wall
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.)
Expired - Lifetime
Application number
EP02027730A
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German (de)
English (en)
Other versions
EP1331345A2 (fr
EP1331345A3 (fr
Inventor
Jürgen Menz
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Individual
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Individual
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Publication date
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Publication of EP1331345A2 publication Critical patent/EP1331345A2/fr
Publication of EP1331345A3 publication Critical patent/EP1331345A3/fr
Application granted granted Critical
Publication of EP1331345B1 publication Critical patent/EP1331345B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/40Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42Detection using safety edges
    • E05F15/43Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
    • E05F15/431Detection using safety edges responsive to disruption of energy beams, e.g. light or sound specially adapted for vehicle windows or roofs
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/50Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53Type of wing
    • E05Y2900/55Windows

Definitions

  • the invention relates to a safety switching device for power-operated equipment, such as rolling shutters, rolling grilles, lifting, working platforms, work tables and the like, for power-operated machines, such as robots and automated guided vehicle systems and power-operated windows, doors, sliding systems, etc., especially of motor vehicles according to the Features of the preamble of claim 1.
  • power-operated equipment such as rolling shutters, rolling grilles, lifting, working platforms, work tables and the like
  • power-operated machines such as robots and automated guided vehicle systems and power-operated windows, doors, sliding systems, etc.
  • Optical fibers are well known. They are already as an element of a safety switching device in the Magazine "f + h - promote and lift” 36 (1986) No. 2, from page 106 been described.
  • the optical fiber described in this paper in connection with driverless transport systems and robots has a core made of glass and having a high refractive index. Arranged around the glass fiber is an outer layer with a low refractive index, which in turn is surrounded by a protective coating.
  • the light passes through the conductor directly and through reflections at the boundary layer. With a sharp curvature of the conductor, the light loses the ability to follow the sharp radii of the core. Part of the light leaves the core and enters the outer layer.
  • Such an optical waveguide is therefore suitable for the low-loss conduction of light, but less as a switching element of a safety switching device. He can not meet the requirements of today's power plants, machines, etc., because even with low forces on the optical fiber a clear switching signal is to be generated, which can also be registered very quickly.
  • a generic optical waveguide is known, Patent Abstracts of Japan Vol. 007, No. 104 (M.212), May 6, 1983 JP 58 026621 A (Nissan Jidosha KK), February 17, 1983 , which is intended for installation in the sealing rubber of a vehicle window.
  • the outer wall of the optical waveguide is made of a thermosetting resin, wherein the Lichtleitkern consists of a transparent liquid.
  • JP-07151615 discloses a safety switching device disclosing all features of the preamble of claim 1.
  • the invention has for its object to provide a safety switching device for various applications available that meets all safety requirements, reacts to low pressure forces, and already low pressure forces lead to a clear switching pulse.
  • the object of the invention is achieved by the characterizing features of claim 1 and the method claim 7.
  • the optical waveguide according to the invention passes directly through the crystal-clear material and reflections at the boundary layer between the Lichtleitkern and the outer wall, the light along the conductor, with a high refractive index or refractive index is provided for the Lichtleitkern, so that a low-loss line takes place and the outer wall with a low or a lower refractive index or refractive index is configured.
  • the change in the light pipe along the optical waveguide or the change in the light intensity arriving at the light sensor is caused by the fact that the optical fiber core and the outer wall are elastically deformable and elastically deform when pressure is applied.
  • the light guide core gel in particular silicone gel or other plastics.
  • These materials have a high refractive index or refractive index, but are still deformable.
  • the base material of the silicone gel is fluid and flowable, so that the material can be processed well and can also be well introduced into the outer wall, followed by hardening or solidification, without causing bubbles to form, so that subsequently Material is present, which is elastically yielding.
  • the light source and the light sensor are proposed to have plug-like extensions which are sealingly inserted into the outer wall. It should be expressly understood that other plastics can be used in the context of the invention as a material for the Lichtleitkern.
  • the outer wall is designed as a hose body, which is preferably made of a thermoplastic material.
  • a thermoplastic hose body meets the demand for lower refractive index or refractive index than the materials for the Lichtleitkern and can be manufactured and used in any length and size.
  • this thermoplastic tubular body is elastically deformable, so that occurs by squeezing this optical waveguide according to the invention a very strong change in the light pipe along the conductor.
  • the outer wall may also be made according to the invention of an elastomeric or thermoplastic elastomeric material, of rubber, of a thermoplastic material, of a polymeric material or other plastic. It should be expressly understood that the invention is not limited to the materials described for the optical fiber core and the outer wall. It can be used all materials that meet the requirements described for elasticity, processability and the corresponding refractive index, also called refractive index or refractive index. Furthermore, it is important that the materials for the light guide core and the outer wall are crystal clear.
  • the hose body may be surrounded by a protective layer, which ensures both protection against mechanical damage and protection against loss of light or intrusion of extraneous light.
  • This protective layer must also be elastic and must not hinder the elasticity of the optical fiber core and / or the outer wall.
  • the outer wall formed as a hose body and the protective layer and a protective layer or a protective body may be used, which has on its inside a material order, which forms the outer wall and takes over their function.
  • Such an optical waveguide can also be extruded together as a unit, for example in a triplex extrusion.
  • the optical waveguide has a rectangular cross-section, so that it can easily be assigned to any closing edges.
  • the optical waveguide can also be strip-like or strip-like and adhesively attached to closing edges. It can either flat ribbon-like Tube body are used or films that are sealed laterally before or after filling the material for the Lichtleitkern. It should be noted, however, that it is not absolutely necessary to laterally close the films or tapes after applying the material for the Lichtleitkern, since the light at the light source can also be bundled so that lateral light losses are of subordinate importance.
  • the optical waveguide can be produced by possibly filling in a tube with silicone gel or another plastic in a flowable state by means of pressure, the silicone gel or the plastic subsequently solidifying to form an elastically deformable mass or cures. Such solidification or hardening is possible without formation of bubbles, which could disturb the light pipe. There is also an adhesive-like attachment of the silicone gel on the inner wall of the tube, so that such an optical waveguide can also be portioned arbitrarily.
  • films are used, the light-conducting material being applied on one side of a film, the further film being applied over it and strip or ribbon-like optical waveguides being severed or cut off after hardening or solidification of the light-conducting material.
  • One of the films can also be provided with an adhesive strip, so that a simple and cost-effective attachment of such an optical waveguide to a closing edge is possible.
  • 1 generally designates an optical waveguide having a Lichtleitkern 2 and an outer wall 3 designed as a tubular body.
  • the light guide core 2 comprises gel, in particular silicone gel or other plastics, these materials being introduced in the liquid state into the outer wall 3 designed as a hose body.
  • a corresponding optical waveguide can be produced.
  • a protective layer 4 is attached to the outer wall 3, which may also be designed as an elastic tube or as a coating or coating.
  • the optical waveguide is shown with a circular cross-section.

Landscapes

  • Light Guides In General And Applications Therefor (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Air Bags (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Window Of Vehicle (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Push-Button Switches (AREA)

Claims (7)

  1. Dispositif de commutation de sécurité pour des équipements à actionnement mécanisé tels que des portails roulants, des rideaux de fer, des plates-formes de levage et de travail, des tables de travail et similaires, pour des machines à actionnement mécanisé tels que des robots et des systèmes de transport sans conducteur ainsi que des fenêtres, portes, installations coulissantes, etc. à actionnement mécanisé, notamment de véhicules automobiles, comprenant au moins une source de lumière, un câble à fibre optique (1), un détecteur de lumière et comprenant un dispositif de commande associé qui commande le mécanisme d'entraînement des équipements, etc. en fonction de l'intensité lumineuse reçue du détecteur de lumière, le câble à fibre optique (1) présentant au moins une âme en fibre optique (2) à coefficient de réfraction élevé et une paroi extérieure (3) entourant l'âme en fibre optique (2) et à faible coefficient de réfraction et l'âme en fibre optique (2) et la paroi extérieure (3) étant fabriquées dans un matériau qui se présente sur le câble à fibre optique (1) prêt à l'emploi dans un état déformable par élasticité, caractérisé en ce que l'âme en fibre optique (2) présente du gel, notamment du gel de silicone ou d'autres matières plastiques, que la paroi extérieure (3) est réalisée sous la forme d'un corps flexible qui est de préférence fabriqué dans un matériau thermoplastique et que les matériaux pour l'âme en fibre optique (2) et la paroi extérieure (3) sont transparents.
  2. Dispositif de commutation de sécurité selon la revendication 1, caractérisé en ce que le corps flexible est entouré d'une couche protectrice (4).
  3. Dispositif de commutation de sécurité selon la revendication 2, caractérisé en ce que la couche protectrice (4) est réalisée sous la forme d'une couche de protection contre la lumière.
  4. Dispositif de commutation de sécurité selon l'une des revendications précédentes, caractérisé en ce que le câble à fibre optique (1) présente une section transversale rectangulaire.
  5. Dispositif de commutation de sécurité selon la revendication 4, caractérisé en ce que le câble à fibre optique (1) est réalisé en forme de bande ou de ruban.
  6. Dispositif de commutation de sécurité selon l'une des revendications précédentes, caractérisé en ce que la source de lumière et/ou le détecteur de lumière présentent des prolongations de type bouchon qui sont adaptées aux dimensions intérieures de la paroi extérieure (3).
  7. Procédé de fabrication d'un câble à fibre optique selon l'une des revendications 1 à 6, caractérisé en ce que la paroi extérieure (3) présente des films, le matériau conducteur de lumière sous la forme d'un matériau de base en gel de silicone étant appliqué sur un film, que l'autre film est appliqué ensuite et que des câbles à fibre optique en forme de bande ou de ruban sont détachés après le durcissement ou la solidification du gel de silicone.
EP02027730A 2002-01-23 2002-12-11 Dispositif de commutation de sécurité Expired - Lifetime EP1331345B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10202380 2002-01-23
DE10202380A DE10202380A1 (de) 2002-01-23 2002-01-23 Sicherheitsschalteinrichtung

Publications (3)

Publication Number Publication Date
EP1331345A2 EP1331345A2 (fr) 2003-07-30
EP1331345A3 EP1331345A3 (fr) 2005-12-07
EP1331345B1 true EP1331345B1 (fr) 2008-10-22

Family

ID=7712807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027730A Expired - Lifetime EP1331345B1 (fr) 2002-01-23 2002-12-11 Dispositif de commutation de sécurité

Country Status (5)

Country Link
US (2) US20030136653A1 (fr)
EP (1) EP1331345B1 (fr)
AT (1) ATE412099T1 (fr)
DE (2) DE10202380A1 (fr)
ES (1) ES2314019T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023593A1 (de) * 2006-05-19 2007-11-22 Valeo Schalter Und Sensoren Gmbh Lichtleitelement

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999074A (en) * 1973-08-02 1976-12-21 Callaghan James M Fiber-optic photoelectric power control device
DE2737499C3 (de) * 1977-08-19 1981-10-22 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Faseroptisches Schaltungselement
JPS5826621A (ja) * 1981-08-12 1983-02-17 Nissan Motor Co Ltd パワ−ウインド装置
JPS61277028A (ja) * 1985-05-31 1986-12-08 Sumitomo Electric Ind Ltd センサ−
US4830461A (en) * 1987-01-29 1989-05-16 Bridgestone Corporation Pressure-sensitive sensors
DE3731428A1 (de) 1987-09-18 1989-04-06 Bayerische Motoren Werke Ag Vorrichtung zur vermeidung des einquetschens von koerperteilen beim schliessen elektrisch betaetigbarer fenster oder schiebedaecher
US4918305A (en) * 1988-08-01 1990-04-17 General Motors Corporation Fiber optic pressure sensor using pressure sensitive fiber different from input and output fibers
DE4311359A1 (de) * 1992-04-07 1993-10-14 Bridgestone Corp Tokio Tokyo Lichtleiterschlauch
JPH07151615A (ja) * 1993-11-29 1995-06-16 Nissei Denki Kk 光ファイバーセンサ
DE19741939A1 (de) * 1997-09-23 1999-03-25 Marantec Antrieb Steuerung Sicherheitsvorrichtung zum Anhalten motorisch bewegter Gegenstände
DE19801961A1 (de) * 1998-01-21 1999-07-22 Deutsch Zentr Luft & Raumfahrt Detektionseinrichtung zur Schließkantenüberwachung, Verfahren zu ihrer Herstellung sowie Verfahren zum Überwachen des Schließvorganges mittels der Detektionseinrichtung

Also Published As

Publication number Publication date
EP1331345A2 (fr) 2003-07-30
US20030136653A1 (en) 2003-07-24
EP1331345A3 (fr) 2005-12-07
ES2314019T3 (es) 2009-03-16
ATE412099T1 (de) 2008-11-15
DE10202380A1 (de) 2003-07-24
DE50212932D1 (de) 2008-12-04
US20050205767A1 (en) 2005-09-22

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