EP1146528B1 - Paillasson à contact électrique avec appareil pour la surveillance du courant permanent - Google Patents

Paillasson à contact électrique avec appareil pour la surveillance du courant permanent Download PDF

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Publication number
EP1146528B1
EP1146528B1 EP01106720A EP01106720A EP1146528B1 EP 1146528 B1 EP1146528 B1 EP 1146528B1 EP 01106720 A EP01106720 A EP 01106720A EP 01106720 A EP01106720 A EP 01106720A EP 1146528 B1 EP1146528 B1 EP 1146528B1
Authority
EP
European Patent Office
Prior art keywords
contact mat
plates
current monitoring
quiescent current
intermediate layer
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
EP01106720A
Other languages
German (de)
English (en)
Other versions
EP1146528A3 (fr
EP1146528A2 (fr
Inventor
Karlheinz Beckhausen
Jürgen Menz
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.)
Gelbau & Co KG GmbH
Original Assignee
Gelbau & Co KG 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 Gelbau & Co KG GmbH filed Critical Gelbau & Co KG GmbH
Publication of EP1146528A2 publication Critical patent/EP1146528A2/fr
Publication of EP1146528A3 publication Critical patent/EP1146528A3/fr
Application granted granted Critical
Publication of EP1146528B1 publication Critical patent/EP1146528B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H01H3/141—Cushion or mat switches

Definitions

  • the invention relates to a device for closed-circuit current monitoring with an electrical contact mat with at least two in the quiescent current with spaced-apart plates according to the features of the preamble of claim 1.
  • Such contact mats find various applications as safety devices, as warning devices, possibly also as burglar alarms.
  • EP-0 395 784 It is also known (EP-0 395 784 ) produce the plates of rubber, plastic or the like and provided with spacers.
  • the spacers are designed as knobs, strips or strips and made in one piece with a plate. This results in plates that are expensive and therefore expensive to manufacture, especially since the plate with spacers must be designed so that the spacer is not conductive, the plate but conductive.
  • the electrically conductive surfaces comprise a braid, a woven or knitted fabric, which are conductive.
  • the distance-giving device has loop-like threads which are attached either to both surfaces or to a surface. It is also an elastic intermediate layer between the conductive surfaces, wherein the contacting takes place after compression of the elastic intermediate layer and the evaluation device is supplied, wherein the evaluation device has an ohmic or capacitive termination.
  • the invention has for its object to overcome the disadvantages of the device for quiescent current monitoring with an electrical contact mat and to create a contact mat that is simple and inexpensive to manufacture and even with small forces sufficiently safe response.
  • the spacers form a substantially inelastic intermediate layer which has openings of such a size that the inner surfaces of the plate contact one another under pressure, the plates being formed as thin, preferably flexible and elastic switching elements.
  • the plates preferably have a thickness of 2.5 mm, wherein the intermediate layer, which is preferably formed as a mesh or perforated film made of plastic or cotton, has a thickness of 0.5 mm, wherein the openings in the intermediate layer in a mesh fabric mesh size of about 5 mm.
  • the plates preferably have a Shore hardness of 50 to 65.
  • the plates have knobs or other elevations which are arranged at a distance from one another on their surface facing away from the intermediate layer. As a result, the contact ability is increased, especially when the load is applied more flat than punctiform.
  • a contact mat can be produced by simple means which already forms a unit in itself.
  • an adhesive tape may be used as the enclosure.
  • the proposed contact mat is suitable for forming a bumper or other safety switching elements with a large follow-up distance, which then connect to the contact mat transmission elements which are attached to a support element, wherein also the side facing away from the transmission elements of the support element an elastic upper body, preferably made of foam is.
  • the support member is articulated movable perpendicular to the contact mat and designed to be substantially rigid so that forces on the elastic upper body to trigger a contact of the contact mat.
  • the transmission elements are formed on the contact mat facing the end so that they form a small transfer surface, which in Range of 10 mm 2 lies. If several transmission elements, eg. B. arranged in several rows, in particular oblique forces can lead to the elastic upper body for safe release of the contact mat. Due to the number and arrangement of the transmission elements, therefore, the switching trip can be varied.
  • the contact mat and the support member may be housed in a frame, the frame enclosing these two elements and holds against each other with an edge.
  • the proposed contact mat is also preferably suitable for forming a safety edge, wherein then the contact mat is formed as a contact strip to which a support bar connects by means of transmission elements, which is articulated perpendicular to the contact strip movable.
  • the structure is similar to that of the bumpers, although this is not primarily about a large caster, but about a special type of safety edge.
  • the transmission elements may be formed integrally with the support strip, wherein the support strip should have a certain flexibility, so that a point load causes a contact release.
  • the proposed contact mat can also be bent like a bead and attached at its two ends to a machine, to a roller shutter or the like and be designed as a safety contact rail, wherein a pressure on the outer jacket of the bead-like contact mat triggers a switching pulse.
  • the plates forming the switch of a tactile sensor are connected to an electronic evaluation unit which has at least one threshold value switch and one switching stage. This makes it possible to realize a compact evaluation unit which, in addition to detecting an obstacle by means of the tactile sensor, also effects the evaluation by means of the threshold switch and the triggering of a switching operation by means of a switching stage.
  • FIG. 1 is generally designated 2 a contact mat having at its periphery a cutting line.
  • the contact mat 2 has plates 2a and 2b, which are made of rubber or polymers and are electrically conductive by the addition of conductive substances, such as carbon black, graphite, metal powder or the like.
  • electrical lines 15 and 16 are connected, leading to a tactile sensor, so that the mat is part of a device for closed-circuit monitoring.
  • the plates 2a and 2b have a thickness of about 2.5 mm and are resilient.
  • an intermediate layer is designated, which is substantially inelastic and made of non-conductive material, preferably a mesh.
  • the netting has, like FIG. 1 can be seen, through openings, so that under pressure, for example, the plate 2b, the inner surface of this plate through the mesh plate 2a can touch and thus acts as an electrical switch for the device for quiescent current monitoring.
  • the mesh size of the mesh fabric is preferably about 5 mm.
  • the thickness of the fabric is about 0.5 mm.
  • the netting can for example be made self-adhesive on both sides, so that after compression of the plates 2a and 2b, these are fastened to one another via the netting or the intermediate layer 2c are.
  • the edges can be subsequently enclosed by means of an adhesive tape, so that the contact mat 2 is protected against the ingress of dirt and the like.
  • the contact mat 2 can still be wrapped in a work mat, not shown, so that a mat is formed, which can be run over by wheels and has increased strength and protection.
  • FIG. 2 is the contact mat 2 in turn composed of the plates 2a and 2b and the intermediate layer 2c on a solid surface 17, for example, supported on a machine part or on a vehicle.
  • an elastic upper body 18 is arranged, which is fastened to a support element 19, which in turn is in operative connection by means of transmission elements 20 and 21 with the contact mat 2.
  • the elastic upper body 18 encounters a resistance, a force is also exerted on the support element 19 which transmits this force to the plate 2b via the transmission elements 20 and / or 21, thereby contacting the plate 2b with the plate 2a and thereby the mat acts as a switch in conjunction with the quiescent current monitoring device and triggers a switching pulse that results in a warning signal or a shutdown of the vehicle or machines and the like.
  • the elastic upper body is designed spatially so large and so elastic that the time between the switching pulse and the stoppage of the machine or the vehicle to a distance of the elastic compliance of the upper body 18 fits, so that the machine or the vehicle comes to a standstill, without causing any damage.
  • the support member 19 must be opposite to the mat parallel to the plane of the FIG.
  • the support member may therefore be suspended, for example, pendulum or radially supported with the contact mat in a frame and in the plane of the drawing FIG. 2 be movable so that the support member and the contact mat can not move against each other, but can be compressed.
  • the switching triggering and the reaction time and force to trigger the switching pulse of the contact mat can be changed.
  • the switching triggering and the reaction time and force to trigger the switching pulse of the contact mat can be changed.
  • the switching triggering and the reaction time and force to trigger the switching pulse of the contact mat can be changed.
  • the transmission elements and oblique forces can trigger a switching pulse on the elastic upper body.

Landscapes

  • Push-Button Switches (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Claims (5)

  1. Dispositif de surveillance du courant de repos, présentant
    un tapis de contact (2) qui présente au moins deux plaques (2a, 2b) disposées à distance l'une de l'autre à l'état de repos et présentant des surfaces électriquement conductrices,
    la distance étant établie par des écarteurs non conducteurs,
    les surfaces intérieures des plaques (2a, 2b) se touchant mutuellement lorsque le tapis de contact (2) est sollicité en pression et formant ainsi le commutateur d'un détecteur tactile du dispositif de surveillance du courant de repos,
    le détecteur présentant une fermeture électrique raccordée en parallèle au tapis de contact,
    caractérisé en ce que
    les écarteurs sont configurés comme couches intermédiaires (2c) essentiellement non élastiques qui présentent des ouvertures d'une taille telle que les surfaces intérieures des plaques (2a, 2b) se touchent mutuellement lorsque le tapis de contact (2) est sollicité en compression,
    en ce que les plaques (2a, 2b) sont configurées sous la forme de minces éléments de commutation flexibles et élastiques, réalisés en caoutchouc ou en polymère, et rendus électriquement conducteurs par addition de matières conductrices, par exemple du noir de carbone, du graphite, de la poudre métallique ou similaires et
    en ce que la couche intermédiaire est configurée comme treillis tissé non conducteur, de préférence en matière synthétique ou en coton.
  2. Dispositif de surveillance du courant de repos à l'aide d'un tapis de contact électrique selon la revendication 1, caractérisé en ce que la couche intermédiaire (2c) est rendue adhésive sur ses deux faces.
  3. Dispositif de surveillance du courant de repos selon l'une des revendications 1 ou 2, caractérisé en ce que sur leur surface non tournée vers la couche intermédiaire (2c), les plaques (2a, 2b) présentent des bosses ou d'autres saillies disposées à distance mutuelle.
  4. Dispositif de surveillance du courant de repos selon l'une des revendications précédentes, caractérisé en ce que pour former un pare-choc ou un autre élément de commutation de sécurité à long parcours de déformation, des éléments de transfert (20, 21) fixés à un élément de soutien (19) sont raccordés au tapis de contact (2), en ce que l'élément de soutien (19) porte sur le côté non tourné vers les éléments de transfert (20, 21) un corps supérieur élastique (18), de préférence en mousse et en ce que l'élément de soutien (19) est articulé de manière à pouvoir se déplacer perpendiculairement au matelas de contact.
  5. Dispositif de surveillance du courant de repos selon l'une des revendications précédentes, caractérisé en ce que pour former une latte conductrice de protection ou un autre élément de commutation de protection, le tapis de contact (2) est configuré comme ruban de contact sur lequel sont raccordés des éléments de transfert fixés sur une latte de soutien et en ce que la latte de soutien est articulée de manière à pouvoir se déplacer perpendiculairement au ruban de contact.
EP01106720A 2000-04-14 2001-03-16 Paillasson à contact électrique avec appareil pour la surveillance du courant permanent Expired - Lifetime EP1146528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10018475 2000-04-14
DE10018475A DE10018475A1 (de) 2000-04-14 2000-04-14 Elektrische Kontaktmatte mit Vorrichtung zur Ruhestromüberwachung

Publications (3)

Publication Number Publication Date
EP1146528A2 EP1146528A2 (fr) 2001-10-17
EP1146528A3 EP1146528A3 (fr) 2004-04-28
EP1146528B1 true EP1146528B1 (fr) 2010-07-14

Family

ID=7638706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106720A Expired - Lifetime EP1146528B1 (fr) 2000-04-14 2001-03-16 Paillasson à contact électrique avec appareil pour la surveillance du courant permanent

Country Status (5)

Country Link
US (1) US6486424B2 (fr)
EP (1) EP1146528B1 (fr)
AT (1) ATE474320T1 (fr)
DE (2) DE10018475A1 (fr)
ES (1) ES2348220T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0204838D0 (en) * 2002-03-01 2002-04-17 Tapeswitch Ltd Safety monitor for machinery
US8016037B2 (en) * 2004-04-15 2011-09-13 National Oilwell Varco, L.P. Drilling rigs with apparatus identification systems and methods
DE102008006323B4 (de) * 2007-02-27 2014-04-30 Eichenauer Heizelemente Gmbh & Co. Kg Reduktionsmittelversorgungssystem für einen Abgasreinigungskatalysator eines Verbrennungsmotors und Steckverbindung zum Anschließen von beheizbaren Flüssigkeitsleitungen

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1703497U (de) * 1955-03-15 1955-07-28 Erich Grusa Kontakt-laeufer fuer flaechenkontakt.
FR2033446A5 (fr) * 1969-02-25 1970-12-04 Tubest Sa
DE2101193A1 (de) * 1971-01-12 1972-08-03 Ver Baubeschlag Gretsch Co Kontaktmatte
US4324962A (en) * 1980-10-14 1982-04-13 Oak Industries Inc. Membrane switch having a puff ink spacer
DE3365466D1 (en) * 1982-09-30 1986-09-25 Minnesota Mining & Mfg Pressure sensitive switchmats
JPS59118040U (ja) * 1983-01-31 1984-08-09 アルプス電気株式会社 入力装置
DE3528382A1 (de) * 1985-08-07 1987-02-12 Huebner Gummi & Kunststoff Kontaktmatte
DE58909011D1 (de) * 1989-05-05 1995-03-23 Karlheinz Beckhausen Elektrische Kontaktmatte.
DE3915931A1 (de) * 1989-05-16 1990-11-22 Mayser Gmbh & Co Sicherheitspuffer
DE4323542C2 (de) * 1993-07-14 1996-12-19 Hans Juergen Hennig Elektrischer Schalter
US5588673A (en) * 1994-02-01 1996-12-31 The Bergquist Company Membrane switch for use over a steering wheel airbag assembly
DE4421447A1 (de) * 1994-06-22 1996-01-04 Hans Juergen Hennig Elektrischer Schalter
DE19510617A1 (de) * 1995-03-23 1996-09-26 Leon Helma Christina Flexible Kontaktmatte
US5695859A (en) * 1995-04-27 1997-12-09 Burgess; Lester E. Pressure activated switching device
US5642901A (en) * 1995-05-26 1997-07-01 Larry J. Winget Thermoplastic air bag cover having a membrane switch with enhanced activation
EP0778475A1 (fr) * 1995-06-29 1997-06-11 The Nippon Signal Co. Ltd. Detecteur a transistor a microalliage
US5639114A (en) * 1995-11-14 1997-06-17 Trw Inc. Steering wheel with air bag cover and horn switch
DE19946039A1 (de) * 1999-09-25 2001-03-29 Beckhausen Karlheinz Vorrichtung zur Ruhestromüberwachung einer sicherheitskritischen Einrichtung

Also Published As

Publication number Publication date
ATE474320T1 (de) 2010-07-15
ES2348220T3 (es) 2010-12-01
EP1146528A3 (fr) 2004-04-28
DE50115548D1 (de) 2010-08-26
DE10018475A1 (de) 2001-10-18
US20010037932A1 (en) 2001-11-08
US6486424B2 (en) 2002-11-26
EP1146528A2 (fr) 2001-10-17

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