EP0395784B1 - Paillasson à contact électrique - Google Patents

Paillasson à contact électrique Download PDF

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Publication number
EP0395784B1
EP0395784B1 EP89108088A EP89108088A EP0395784B1 EP 0395784 B1 EP0395784 B1 EP 0395784B1 EP 89108088 A EP89108088 A EP 89108088A EP 89108088 A EP89108088 A EP 89108088A EP 0395784 B1 EP0395784 B1 EP 0395784B1
Authority
EP
European Patent Office
Prior art keywords
plates
contact mat
contactors
spacers
mat according
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
EP89108088A
Other languages
German (de)
English (en)
Other versions
EP0395784A1 (fr
Inventor
Karlheinz Beckhausen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE58909011T priority Critical patent/DE58909011D1/de
Priority to AT89108088T priority patent/ATE118641T1/de
Priority to EP89108088A priority patent/EP0395784B1/fr
Publication of EP0395784A1 publication Critical patent/EP0395784A1/fr
Application granted granted Critical
Publication of EP0395784B1 publication Critical patent/EP0395784B1/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 an electrical contact mat with at least two electrically conductive plates arranged at a distance from one another in the idle state, according to the preamble of patent claim 1.
  • Such contact plates are used in various ways as security devices, as warning devices, and possibly also as burglar protection.
  • US-A-4,172,216 From US-A-4,172,216 an electrical contact mat with at least two spaced apart, made of rubber, plastic and the like. Made of rubber, plastic and the like. Is known. The electrical conductivity is generated by admixing conductive substances and the distance by non-conductive spacer is made. Contactors are provided between the plates, which, after the spacers have been compressed by a predetermined value, establish an electrical connection between the plates and are operatively connected to an electrical evaluation unit. In US-A-4,172,216, the contactors are introduced in an electrically conductive plate and are formed in the form of points or nubs, these contactors only occupying a small part of the entire surface of the plate.
  • the object of the present invention is therefore to provide an electrical contact mat which, despite its great robustness and reliability, is suitable for ensuring reliable contact tripping even with small, in particular point-like, loads.
  • the plates should have good stabilization with respect to one another and be suitable for a wide range of uses, for example also in connection with non-flat surfaces.
  • the object of the invention is achieved by the features of the characterizing part of patent claim 1. Further embodiments are specified in the subclaims.
  • Both the contactors and the spacers can be arranged as individual parts or as individual elements between the plates, it being essentially only important that the spacers are designed to be insulating, while the contactors have good electrical conductivity.
  • the contactors can be designed, for example, as balls or rods, preferably made of metal, which are arranged between the spacers which have perforations, recesses or the like.
  • the spacers or spacer strips or plates preferably have groove-shaped or V-shaped recesses on the end faces facing the balls or rods in order to keep the balls or rods at a distance from both plates.
  • the balls or rods can also have projections, which engage in recesses in the spacers, spacer strips or spacer plates, so that the contactors are thereby held at a distance from both plates, so that an electrical double break occurs.
  • the contactors and spacers are provided on and connected to at least one plate.
  • the spacers are made of a rubber or plastic that has no conductive admixture, while the rest of the area, i.e. the plates and the contactors are made of a rubber or plastic mixture which has an admixture of conductive substances such as carbon black, graphite, metal powder and the like.
  • inserts made of metal wires, metal braids, grids and the like can also be incorporated. Depending on the design of these inserts, which are also made of non-metallic materials, e.g. Glass fibers, etc., can be produced, the stability or strength of the plates can be improved or increased.
  • the contactors and spacers can be designed as knobs or as strips or strips.
  • the knobs are advantageously designed as hemispheres, as cones, as truncated cones, as pyramids, as cubes, as cuboids, as columns or teeth of any shape.
  • the strips or strips have a triangular cross section, but can also have a semicircular, triangular, rectangular or trapezoidal cross section or also have a rectangular or trapezoidal cross section with additional groove or V-shaped depressions or incisions. They can be designed in open or closed forms, for example circular, honeycomb, snake, meander or zigzag.
  • a particularly good and sensitive contact results when the contactors of one plate cooperate with contactors of the other plate in a tongue and groove manner, the surfaces or surface parts arranged against one another preferably forming an acute angle to the plate surfaces.
  • the plates are cross-stabilized via the contactors.
  • the surfaces of the contactors perform a relative movement relative to one another, so that the contact surfaces are self-cleaning.
  • the switching travel can also be varied or reduced.
  • the contactors or spacers designed as knobs or strips or strips are designed asymmetrically such that the side surfaces of the contactors or spacers form different angles to the plane of the plate, the contactors or spacers can specifically fold or bend when pressed together. This results in good contact on the one hand, since a relative movement also occurs, and on the other hand the spring stiffness of the spacers can also be varied. In this context it should be emphasized that the spring rate of the contactors and spacers can be varied depending on the design or shape.
  • the spacers and / or the contactors are conical or pyramid-shaped when they are designed as Knobs or formed with a triangular cross-section in their design as strips or strips, so there is initially a relatively large movement of the two plates with each other even with low forces, which then always according to the progressiveness of the spacers or contactors due to their shape even with larger forces becomes lower.
  • the elasticity or spring stiffness can also be influenced by cavities in the spacers or contactors.
  • the cavities or channels in the spacers or contactors can be connected to a compressed air source.
  • the contactors can be enlarged so that a "test contact” can be made.
  • the supply of compressed air into the cavities of the spacers can influence the force from which the contacts are switched or the switching path is changed.
  • the contactor or spacer can also be made by attaching rubber or plastic strips, rubber or plastic plates or rubber or plastic mats to the inner wall of the plates, with rubber between the plates and the rubber or plastic strips - Or plastic plates and the like. Balls, rods and the like. Made of conductive or non-conductive material.
  • the inner surfaces of the plates or the rubber or plastic plates or rubber or plastic mats and / or the surface of the contactors can advantageously be provided with corrugations or with grooves, grooves or projections.
  • sharp-edged contact means such as metal dust and the like, incorporated.
  • the mentioned sharp-edged contact means or particles can also be glued on or pressed in or rolled up.
  • the plates are sealed on the circumference by means of an enclosure.
  • the two plates can also be of identical design, in particular with regard to the contactors and spacers attached to them, each plate, in particular at two adjacent edges, having spacers in the form of strips which engage in recesses in the counterplate and are preferably glued or welded to the latter .
  • Such a contact mat can be used directly without additional sheathing, depending on the application, the contact mats can be arranged individually or in groups in a protective mat. Gluing or welding is only necessary for the spacer strips on the edge.
  • This also creates a dense contact mat, which on the one hand closes the interior from external influences, but on the other hand also seals it, so that the interior can be filled with insulating material such as gas, atmospheric air or an insulating liquid.
  • insulating material such as gas, atmospheric air or an insulating liquid.
  • 1 and 2 denote plates on which, according to FIGS. 1 to 7, the contactors 3 and the spacers 4 are integrally formed.
  • the spacers 4 are made of insulating rubber without the addition of electrically conductive means, while the plates 1 and 2 and the contactors 3 are made of electrically conductive rubber.
  • the spacers 4 are larger or longer, so that the plates 1 and 2 or the contactors 3 are kept at a distance from the plates or contactors of the other plate. If, as shown in FIGS.
  • the spacers are compressed or deformed by the action of force, the contactors come into contact with the counter surface, so that an electrical line is produced between the plates 1 and 2 and the connected ones in the Evaluation unit (not shown) determines this contacting and triggers various types of signals.
  • the contactors or spacers can have different shapes and can be designed both in one piece and as separate parts.
  • the plates 1 and 2 are sealed by an enclosure 5.
  • This border can also be made of elastic material, such as rubber or the like, and can be glued, welded or connected in a similar manner to the plates.
  • 10 denotes an insert which, depending on the configuration, serves either to improve the electrical conductivity or to increase the mechanical strength.

Landscapes

  • Push-Button Switches (AREA)
  • Contacts (AREA)

Claims (17)

  1. Tapis contact électrique comportant au moins deux plaques (1, 2) conductrices d'électricité, réalisées en caoutchouc, en matière plastique ou matière analogue, et qui sont écartées l'une de l'autre, la conductivité électrique étant obtenue par adjonction de matière conductrice et l'écartement par des organes d'écartement (4) non conducteurs, avec des éléments de contact (3) prévus entre les plaques (1, 2), éléments qui après compression des organes d'écartement (4) d'une valeur prédéterminée, réalisent une liaison électrique entre les plaques (1, 2) et avec l'unité d'exploitation électrique qui coopère avec les plaques (1, 2) tapis caractérisé en ce que les éléments de contact (3) et les organes d'écartement (4) sont prévus sur au moins une plaque (1 ou 2) et sont reliés à celle-ci et les éléments de contact (3) sont des bandes ou des longerons et de façon connue en soi, les organes d'écartement (4) sont des bandes ou des longerons, ces bandes ou longerons ayant une section triangulaire.
  2. Tapis contact selon la revendication 1, caractérisé en ce que les éléments de contact (3) et les organes d'écartement (4) sont en caoutchouc ou en matière plastique ou matière analogue et sont réalisés en une seule pièce avec la ou les plaques (1, 2).
  3. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les bandes ou longerons sont réalisés sous une forme ouverte ou fermée, par exemple une forme de cercle, de nid d'abeille, de serpent, de méandre ou en zigzag.
  4. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les surfaces en liaison des éléments de contact (3) opposés, sont prévues au moins dans la zone de contact avec un angle aigu par rapport à la surface des plaques (1, 2).
  5. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les éléments de contact (3) et les organes d'écartement (4), réalisés sous la forme de bandes ou de longerons, sont asymétriques pour que les parois latérales des bandes ou longerons présentent des angles d'amplitude différente par rapport aux plaques (1, 2).
  6. Tapis contact selon l'une des revendications précédentes, caractérisé en ce qu'à l'intérieur des bandes ou longerons des éléments de contact (3) et/ou les organes d'écartement (4), il y a des cavités (8).
  7. Tapis contact selon l'une des revendications précédentes, caractérisé en ce qu'au moins une cavité (8) de chaque tapis contact comporte un branchement qui peut être relié à une source d'air comprimé.
  8. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que la surface intérieure des plaques (1, 2) et/ou des plaques en caoutchouc et/ou en matière plastique (6) et/ou la surface des éléments de contact (3) sont munies d'un moletage (9) avec des rainures et des parties en saillie ou avec des moyens de contact à arêtes vives comme par exemple de la poussière métallique.
  9. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les plaques (1, 2) sont des plaques en caoutchouc ou en matière plastique (6) et/ou les éléments de contact (3) comportent des inserts (10) en fil, tresse, grille ou moyens analogues, métalliques.
  10. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les plaques (1, 2) sont fermées de manière étanche à leur périphérie par un entourage (5).
  11. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que le volume compris entre les plaques (1, 2) est rempli d'un milieu isolant par exemple de gaz ou d'un liquide.
  12. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que le milieu isolant est en surpression.
  13. Tapis contact selon l'une des revendications précédentes, caractérisé en ce qu'un indicateur de pression est relié au volume compris entre les plaques (1, 2) par exemple un mano-contacteur.
  14. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les plaques (1, 2) d'un même tapis ont la même forme, notamment quant aux éléments de contact (3) et aux organes d'écartement (4), et de préférence des organes d'écartement (4) en forme de bande sont réalisés au niveau de deux bords adjacents de chaque plaque (1, 2).
  15. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que les extrémités libres des organes d'écartement (4) pénètrent dans des rainures de la plaque opposée (1 ou 2) et y sont de préférence fixées par exemple par collage ou soudage.
  16. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que sur les plaques (1, 2) d'un tapis contact ou les plaques (1, 2) du dernier tapis contact de plusieurs tapis contact branchés en série, se trouve une diode de blocage.
  17. Tapis contact selon l'une des revendications précédentes, caractérisé en ce que la diode de blocage est intégrée à l'intérieur du contour du tapis contact.
EP89108088A 1989-05-05 1989-05-05 Paillasson à contact électrique Expired - Lifetime EP0395784B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE58909011T DE58909011D1 (de) 1989-05-05 1989-05-05 Elektrische Kontaktmatte.
AT89108088T ATE118641T1 (de) 1989-05-05 1989-05-05 Elektrische kontaktmatte.
EP89108088A EP0395784B1 (fr) 1989-05-05 1989-05-05 Paillasson à contact électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89108088A EP0395784B1 (fr) 1989-05-05 1989-05-05 Paillasson à contact électrique

Publications (2)

Publication Number Publication Date
EP0395784A1 EP0395784A1 (fr) 1990-11-07
EP0395784B1 true EP0395784B1 (fr) 1995-02-15

Family

ID=8201324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108088A Expired - Lifetime EP0395784B1 (fr) 1989-05-05 1989-05-05 Paillasson à contact électrique

Country Status (3)

Country Link
EP (1) EP0395784B1 (fr)
AT (1) ATE118641T1 (fr)
DE (1) DE58909011D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261115A (en) * 1991-10-29 1993-05-05 Eja Eng Plc Pressure sensitive mat
DE4323542C2 (de) * 1993-07-14 1996-12-19 Hans Juergen Hennig Elektrischer Schalter
DE19510617A1 (de) * 1995-03-23 1996-09-26 Leon Helma Christina Flexible Kontaktmatte
DE10018475A1 (de) 2000-04-14 2001-10-18 Karlheinz Beckhausen Elektrische Kontaktmatte mit Vorrichtung zur Ruhestromüberwachung
FR2882853B1 (fr) * 2005-03-03 2007-11-30 Gouillardon Gaudry Soc Par Act Interrupteur plan et detecteur de presence d'un corps pesant ou d'un individu integrant un tel interrupteur
DE202011052253U1 (de) 2011-12-09 2012-01-31 Mayser Gmbh & Co. Kg Kollisionsschutz
DE102012100404B4 (de) * 2011-12-09 2016-02-18 Mayser Gmbh & Co. Kg Kollisionsschutz
DE102017119152A1 (de) 2017-08-22 2019-02-28 Mayser Holding Gmbh & Co. Kg Schutzeinrichtung mit taktiler Kollisionserfassung für ein Bauteil

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780693A (en) * 1953-08-10 1957-02-05 Huron Specialty Company Pressure switch
US3323197A (en) * 1964-10-07 1967-06-06 Ronan & Kunzl Inc Method of making a switch mat
US3522398A (en) * 1967-11-13 1970-07-28 Goodrich Co B F Electropneumatic panel switch
DE2101193A1 (de) * 1971-01-12 1972-08-03 Ver Baubeschlag Gretsch Co Kontaktmatte
DE2138919A1 (de) * 1971-08-04 1973-02-15 Ver Baubeschlag Gretsch Co Kontaktmatte
DE2331465A1 (de) * 1973-06-20 1975-01-16 Spellmann Georg Hannover Holz Kontaktmatte
US4172216A (en) * 1978-05-19 1979-10-23 Sprague Electric Company Pressure sensitive switch
GB2088637B (en) * 1980-10-28 1984-08-30 Peachey Cyril John Electric switches
GB2128031B (en) * 1982-09-30 1986-06-25 Minnesota Mining & Mfg Pressure sensitive switchmats
DE8608064U1 (de) * 1986-03-24 1986-05-07 Hüllwegen, Josef, Ing.(grad.), 4791 Altenbeken Sicherheitsschaltleiste für eine Schließkante einer mittels einer Antriebs verschließbaren Öffnung

Also Published As

Publication number Publication date
DE58909011D1 (de) 1995-03-23
ATE118641T1 (de) 1995-03-15
EP0395784A1 (fr) 1990-11-07

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