WO1986005837A1 - Device for indicating a pressure or force - Google Patents

Device for indicating a pressure or force Download PDF

Info

Publication number
WO1986005837A1
WO1986005837A1 PCT/SE1986/000151 SE8600151W WO8605837A1 WO 1986005837 A1 WO1986005837 A1 WO 1986005837A1 SE 8600151 W SE8600151 W SE 8600151W WO 8605837 A1 WO8605837 A1 WO 8605837A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
channel
channels
pressure
receiver
Prior art date
Application number
PCT/SE1986/000151
Other languages
French (fr)
Inventor
Bert Ove JÖNSSON
Original Assignee
Joensson Bert Ove
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 Joensson Bert Ove filed Critical Joensson Bert Ove
Publication of WO1986005837A1 publication Critical patent/WO1986005837A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/20—Actuation by change of fluid pressure
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42—Detection using safety edges
    • E05F15/43—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/10—Mechanical actuation by pressure on floors, floor coverings, stair treads, counters, or tills
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the present invention relates to a device for in ⁇ dicating a pressure or force, with possible fields of application such as push-buttons, door edge sensors, pressure sensitive doormats or position detecting equip- ment in general.
  • the device according to the invention comprises one or more channels in an elastic material, e.g.
  • one or more of said channels containing a sound-conducting compressible medium, such as air, as well as a sound transmitter at one end and a sound receiver at the other end.
  • a sound-conducting compressible medium such as air
  • sound are here meant frequencies lower than the ultrasonic frequency.
  • the channel or channels are adapted to be included or integrated in rubber strips or the like, for example in door sealing strips of an elastic material, also in existing, conventional door sealing strips.
  • the strip can be mounted in curves since the channel conducts acoustic energy. This makes it possible to use a low power input, which causes a break of the channel to be indicated as an obstacle. If the channel is compressed anywhere along its length by an obstacle, the sound path through the medium is inter ⁇ rupted. The same occurs with any type of fault in the device proper, e.g.
  • the device thus is self-regulating in that the operating means is rendered inoperative on power failure. Moreover, the switching principle may well be used in explosive surroundings since no spark is formed when the switch is closed.
  • the device will be described in more detail below, reference being had to the accompanying drawing and a preferred embodiment, the drawing showing a part of a garage door or industrial gate 1 whose lower edge is provided with a rubber strip 2 having a channel 3.
  • the channel is air-filled, and contains a sound trans ⁇ mitter 4, such as an oscillator ( ⁇ 20 kHz), and a receiver 5 of the sound from the sound transmitter.
  • the transmitter and the receiver may be of conventional type and are each arranged at one end of the channel and provided with lead-ins in an electric circuit comprising a current source S and a gate operating means M.
  • a further channel 6 (de ⁇ formation channel) may extend which is intended to be deformed upon braking of the gate so as not to damage the obstacle which caused the deformation of the channel 3. It is shown at 7 that a force F is applied, and it appears that the channel 3 is deformed before the channel 6, as indicated above.
  • the channel 3 When the channel 3 is deformed, the sound path between the sound transmitter and the sound receiver is interrupted and, consequently, the current to the operating means of the gate 1 is inter ⁇ rupted, whereupon the deformation channel 6 can be de ⁇ formed upon braking of the gate.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Push-Button Switches (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A device for indicating a pressure or force applied to, for example, push-buttons, door edge sensors, pressure sensitive doormats or position detecting equipment in general, the device comprising one or more channels (3, 6) in an elastic material. One or more of the channels (3) contain a sound transmitter/receiver combination (4, 5) with electric lead-ins, the combination establishing, in normal operation, a sound communication between the sound transmitter and the sound receiver. Upon application of an external force on the elastic material of the channel (3), the channel is compressed such that the sound communication is interrupted.

Description

DEVICE FOR INDICATING A PRESSURE OR FORCE
The present invention relates to a device for in¬ dicating a pressure or force, with possible fields of application such as push-buttons, door edge sensors, pressure sensitive doormats or position detecting equip- ment in general.
Various indication techniques are used, for example on motor operated doors where a person entering through the doorway may be in danger of getting caught at the front or lower edge of the door. Different methods are used to reduce such danger, but none of them functions in a fully satisfactory manner. The functional problems are frequently caused by the incapacity of the devices to distinguish between unauthorised obstacles and the normal surroundings. Furthermore, mechanical type switching arrangements are frequently used which comprise switching plates of metal, and therefore also oxidation is a great problem. In addition, excessive contact stress may cause lasting deformation of this type of metal plate, which hardly is of advantage to the function. The device according to the invention comprises one or more channels in an elastic material, e.g. rubber, one or more of said channels containing a sound-conducting compressible medium, such as air, as well as a sound transmitter at one end and a sound receiver at the other end. By sound are here meant frequencies lower than the ultrasonic frequency. The channel or channels are adapted to be included or integrated in rubber strips or the like, for example in door sealing strips of an elastic material, also in existing, conventional door sealing strips. The strip can be mounted in curves since the channel conducts acoustic energy. This makes it possible to use a low power input, which causes a break of the channel to be indicated as an obstacle. If the channel is compressed anywhere along its length by an obstacle, the sound path through the medium is inter¬ rupted. The same occurs with any type of fault in the device proper, e.g. power failure, short-circuiting of the lead-ins or puncture of a channel. The device thus is self-regulating in that the operating means is rendered inoperative on power failure. Moreover, the switching principle may well be used in explosive surroundings since no spark is formed when the switch is closed. The device will be described in more detail below, reference being had to the accompanying drawing and a preferred embodiment, the drawing showing a part of a garage door or industrial gate 1 whose lower edge is provided with a rubber strip 2 having a channel 3. The channel is air-filled, and contains a sound trans¬ mitter 4, such as an oscillator (<20 kHz), and a receiver 5 of the sound from the sound transmitter. The transmitter and the receiver may be of conventional type and are each arranged at one end of the channel and provided with lead-ins in an electric circuit comprising a current source S and a gate operating means M. In the strip 2 and parallel to the channel 3, a further channel 6 (de¬ formation channel) may extend which is intended to be deformed upon braking of the gate so as not to damage the obstacle which caused the deformation of the channel 3. It is shown at 7 that a force F is applied, and it appears that the channel 3 is deformed before the channel 6, as indicated above. When the channel 3 is deformed, the sound path between the sound transmitter and the sound receiver is interrupted and, consequently, the current to the operating means of the gate 1 is inter¬ rupted, whereupon the deformation channel 6 can be de¬ formed upon braking of the gate.

Claims

1. A device for indicating a pressure or force applied to, for example, push-buttons, door edge sensors, pressure sensitive doormats or position detecting equip¬ ment in general, c h a r a c t e r i s e d in that it comprises one or more channels (3, 6) in an elastic material, that one or more of said channels (3) contain a sound transmitter/receiver combination (4, 5) with electric lead-ins, said combination establishing, in normal operation, a sound communication between the sound transmitter and the sound receiver, and that said channel (3) is compressed upon application of an external force on the elastic material so as to interrupt the sound communication.
2. A device as claimed in claim 1, c h a r a c t e r i s e d in that the sound transmitter is of a type emitting sound having a frequency lower than the ultra¬ sonic frequency.
PCT/SE1986/000151 1985-04-02 1986-04-02 Device for indicating a pressure or force WO1986005837A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8501624A SE8501624L (en) 1985-04-02 1985-04-02 DEVICE FOR INDICATING PRESSURE OR POWER
SE8501624-4 1985-04-02

Publications (1)

Publication Number Publication Date
WO1986005837A1 true WO1986005837A1 (en) 1986-10-09

Family

ID=20359737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000151 WO1986005837A1 (en) 1985-04-02 1986-04-02 Device for indicating a pressure or force

Country Status (3)

Country Link
EP (1) EP0216893A1 (en)
SE (1) SE8501624L (en)
WO (1) WO1986005837A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337549B1 (en) 2000-05-12 2002-01-08 Anthony Gerald Bledin Capacitive anti finger trap proximity sensor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220427A (en) * 1936-03-21 1940-11-05 Ericsson Telefon Ab L M Burglar alarm system
GB1354456A (en) * 1973-01-20 1974-06-05 Automatic Switch Co Acoustical sensing systems
US4103292A (en) * 1976-06-16 1978-07-25 Haas James R Material sensing device
DE3107847A1 (en) * 1980-03-03 1982-02-11 Metallwerk Max Brose Gmbh & Co, 8630 Coburg Method and device for monitoring the closing process of a window of a motor vehicle or the like
DE3038268A1 (en) * 1980-10-10 1982-05-27 Josef Heinrichs Meßgerätebau, 5000 Köln Ultrasonic measurement transducer e.g. for liquid level measurement - has U=shaped ultrasonic conductor joining crystals to measurement section
DE2658660C2 (en) * 1976-12-23 1984-07-12 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Safety device on an automatically closing sliding door
DE3306002A1 (en) * 1983-02-22 1984-08-23 Werner 4292 Rhede Korb Hollow tube for fences, railings or the like
EP0125443A1 (en) * 1983-04-11 1984-11-21 Kraftwerk Union Aktiengesellschaft Controlled barrier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220427A (en) * 1936-03-21 1940-11-05 Ericsson Telefon Ab L M Burglar alarm system
GB1354456A (en) * 1973-01-20 1974-06-05 Automatic Switch Co Acoustical sensing systems
US4103292A (en) * 1976-06-16 1978-07-25 Haas James R Material sensing device
DE2658660C2 (en) * 1976-12-23 1984-07-12 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Safety device on an automatically closing sliding door
DE3107847A1 (en) * 1980-03-03 1982-02-11 Metallwerk Max Brose Gmbh & Co, 8630 Coburg Method and device for monitoring the closing process of a window of a motor vehicle or the like
DE3038268A1 (en) * 1980-10-10 1982-05-27 Josef Heinrichs Meßgerätebau, 5000 Köln Ultrasonic measurement transducer e.g. for liquid level measurement - has U=shaped ultrasonic conductor joining crystals to measurement section
DE3306002A1 (en) * 1983-02-22 1984-08-23 Werner 4292 Rhede Korb Hollow tube for fences, railings or the like
EP0125443A1 (en) * 1983-04-11 1984-11-21 Kraftwerk Union Aktiengesellschaft Controlled barrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6337549B1 (en) 2000-05-12 2002-01-08 Anthony Gerald Bledin Capacitive anti finger trap proximity sensor

Also Published As

Publication number Publication date
EP0216893A1 (en) 1987-04-08
SE8501624L (en) 1986-10-03
SE8501624D0 (en) 1985-04-02

Similar Documents

Publication Publication Date Title
US5296658A (en) Safety edge switch for detection of obstructions encountered by a moving object
US5689236A (en) Remote garage door position indicator
US6389752B1 (en) Touch sensitive trapping protector for power operated closing devices
US3465476A (en) Safety arrangements for power operated windows in road vehicles
US7208694B2 (en) Capacitance activated switch device
EP0773521A4 (en) Burglar alarm apparatus and radio receiver
US6286257B1 (en) Overhead door with dual safety-edge
WO1986005837A1 (en) Device for indicating a pressure or force
JP2006097463A (en) Pinch preventing device
IT1270515B (en) DEVICE FOR A VEHICLE, TO IDENTIFY AND REPORT THE PRESENCE OF DANGER AND / OR ALERT SITUATIONS FOR ROAD CIRCULATION OF A VEHICLE AND / OR TO COMMUNICATE THE PRESENCE OF THE SAME TO OTHER VEHICLES.
DE3570102D1 (en) Accident prevention strip
EP4212692A1 (en) Device for preventing human body from being jammed using change in capacitance
CN112735889B (en) Key structure, electronic equipment and control method
JPH11303504A (en) Insertion preventive device
WO1986005836A1 (en) Safety arrangement in a device for indicating a pressure or force
US20010013203A1 (en) Device for recognition of obstruction of closure
JP3741048B2 (en) Contact detection device and switching device
JP3384003B2 (en) Electric switchgear
CN219226116U (en) Pressure sensing membrane switch
CN211576221U (en) Safe edge touching device based on air pressure detection
JPH09318467A (en) Powered window-opening/closing device
JPS5930987Y2 (en) Abnormal contact detection switch
JPS5926461Y2 (en) security detector
JP2596791B2 (en) Pressure sensor for electric switchgear
CN2341207Y (en) Coded wireless alarm monitor for safe

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DK FI NO US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE