EP0810568A2 - Détecteur automatique d'incendie - Google Patents

Détecteur automatique d'incendie Download PDF

Info

Publication number
EP0810568A2
EP0810568A2 EP97107747A EP97107747A EP0810568A2 EP 0810568 A2 EP0810568 A2 EP 0810568A2 EP 97107747 A EP97107747 A EP 97107747A EP 97107747 A EP97107747 A EP 97107747A EP 0810568 A2 EP0810568 A2 EP 0810568A2
Authority
EP
European Patent Office
Prior art keywords
detector
contact
circuit board
cap
printed circuit
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.)
Granted
Application number
EP97107747A
Other languages
German (de)
English (en)
Other versions
EP0810568B1 (fr
EP0810568A3 (fr
Inventor
Laszlo Köhler
Thomas Hochhauser
Klaus Kaiser
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0810568A2 publication Critical patent/EP0810568A2/fr
Publication of EP0810568A3 publication Critical patent/EP0810568A3/fr
Application granted granted Critical
Publication of EP0810568B1 publication Critical patent/EP0810568B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • the invention relates to an automatic fire detector with a detector base with an electrical contact device and a mechanical locking device and with a detector insert with a printed circuit board and with a detector cap which can be mechanically and electrically connected to one another.
  • automatic fire detectors are constructed in two parts; the detector holder is permanently installed on the ceiling with several screws, and a detachable detector part can be inserted into the detector holder.
  • the detector part itself consists of a printed circuit board with the required electronic components and the actual detector system as well as a detector cap that covers the whole.
  • For the electrical connection for example, three or four sliding contacts, which are generally uniformly distributed on the circular edge of the detector, were provided, to which the wiring was connected.
  • the detector insert had correspondingly arranged contacts, which also took over the mechanical locking when the detector was turned when it was inserted. In order to ensure a good locking, an even distribution of the contacts on the circumference was necessary.
  • Such detectors require complex contacts both in the detection and in the detector use. wiring was also cumbersome, especially when three or four electrical connections were required.
  • the detector inserts usually have a mechanical one Lock in the form of a bayonet lock. This means inserting and rotating the detector insert.
  • DE-GM-92 10 856 an automatic fire detector is described, in which a multipole terminal block with the required sockets is arranged, for example, in the detector socket, which can consist of a simple molded part.
  • the detector insert has a contact pin strip with the corresponding contact pins, which are forcibly assigned to the terminal block when the detector is inserted.
  • the detector insert is therefore rotatably arranged in the circumferential detector cap and can be locked in its end position.
  • the detector insert has a peripheral side wall that acts as a centering ring.
  • the detector cap can be mechanically locked on the detector holder, and when the detector is inserted, ie sensor system in addition to the detector insert and detector cap, a locking cam formed on the detector cap is guided in an oblique sliding guide of a locking link.
  • the locking link is arranged on the detector socket in such a way that a vertical stroke for contacting is achieved when the detector is inserted and screwed in.
  • a safe and reliable, but very complex electrical contact and mechanical locking between the actual detector part and the detector detection is guaranteed.
  • the known detector is designed to be very expensive.
  • the assembly effort with several fastening screws is also complex.
  • the multi-pole connection block has several connection terminals for the connecting wires of the signaling line as well as several connection sockets into which contact pins of the signaling insert are inserted have to. This contact device must be designed so that the detector insert can also be rotated.
  • the object of the invention is to avoid the disadvantages described above and to provide an automatic fire detector which enables simple, fast and nevertheless reliable installation.
  • the detector base is formed by a detector holder which can be fastened to the ceiling with a centrally arranged fastening device, for example with a screw.
  • the contact device is formed by a plurality of contact springs which can be snapped into a contact holder block, each contact spring being designed as a compression spring at its free end. At its other end, each contact spring is designed as a spring-loaded terminal in which the signal line can be connected.
  • Part of the measuring system (sensor system) is integrated in the detector cap.
  • the printed circuit board which is equipped with electronic components, has the supplemented part of the detector system (sensor system) and is mechanically locked in the detector cap.
  • the detector cap itself can be snapped onto the detector holder by means of a snap device without rotating movement.
  • the compression springs contact the circuit board on the correspondingly assigned contact surfaces of the circuit board.
  • At least one snap hook is provided for the mechanical locking of the circuit board.
  • the electrical components which can be formed by SMD components, can expediently be provided with a corrosion protection.
  • the automatic fire detector is designed, for example, as an optical smoke detector which has the essential part of the sensor system on the printed circuit board, the supplementary part of the sensor system, including the labyrinth, being integrated in the detector cap.
  • the invention is briefly explained using the example of an optical smoke detector.
  • the two Figures 1 and 2 show an optical smoke detector in different embodiments shown in section.
  • the detector holder MH has a fastening device BV arranged centrally in the form of a screw. This single-hole installation allows the optical smoke detector to be attached easily and extremely quickly.
  • the detector holder MH has a contact block KB in which, for example, four contact springs KF are arranged. According to the invention, these contact springs KF are designed such that on the one hand they contact the correspondingly assigned contact surface KFL of the printed circuit board LP with their free end as compression springs DF when the detector cap MK is placed on the detector holder MH in a latchable manner.
  • the other end of the contact spring KF is designed as a spring-loaded terminal FKK, into which the wire of the signaling line is simply inserted and ensures reliable contact-making by means of the spring force.
  • the circuit board LP is equipped with the necessary electrical and electronic components BE and SB.
  • the circuit board LP is mechanically lockable in the detector cap MK, which is shown in another exemplary embodiment in FIG. 2.
  • the circuit board LP can have a corrosion protection KS to protect the components SB.
  • the detector cap MK has, in addition to a detector indicator MAN and the necessary optical devices, a labyrinth L and smoke entry openings RO.
  • the detector cap MK with the integrated printed circuit board LP, both of which together form the electronic and optical sensor system, is connected to the detector holder MH both mechanically and electrically by simply snapping onto the detector holder MH.
  • Figure 2 shows schematically in section another embodiment of an optical smoke detector. This is similar to the embodiment according to FIG. 1 and has the same reference numbers.
  • the snap device SV is shown, by means of which the detector cap MK only needs to be snapped onto the detector holder MH.
  • the mechanical locking MA of the printed circuit board LP in the detector cap MK is also shown schematically here in the form of a snap hook.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
EP97107747A 1996-05-21 1997-05-12 Détecteur automatique d'incendie Expired - Lifetime EP0810568B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29609124U DE29609124U1 (de) 1996-05-21 1996-05-21 Automatischer Brandmelder
DE29609124U 1996-05-21

Publications (3)

Publication Number Publication Date
EP0810568A2 true EP0810568A2 (fr) 1997-12-03
EP0810568A3 EP0810568A3 (fr) 1998-01-14
EP0810568B1 EP0810568B1 (fr) 2002-09-04

Family

ID=8024236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107747A Expired - Lifetime EP0810568B1 (fr) 1996-05-21 1997-05-12 Détecteur automatique d'incendie

Country Status (3)

Country Link
EP (1) EP0810568B1 (fr)
AT (1) ATE223605T1 (fr)
DE (2) DE29609124U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813428A1 (fr) * 2000-08-25 2002-03-01 Arana Juan Carlos Ceron Dispositif pour la protection, l'installation et la maintenance des cameras de surveillance dans les transports en commun

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015004458B4 (de) 2014-06-26 2016-05-12 Elmos Semiconductor Aktiengesellschaft Vorrichtung und Verfahren für einen klassifizierenden, rauchkammerlosen Luftzustandssensor zur Prognostizierung eines folgenden Betriebszustands
DE102014019773B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons
DE102014019172B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH633122A5 (en) * 1978-06-27 1982-11-15 Cerberus Ag Connecting device on an alarm consisting of a base part and an alarm part with sensor
CH635001A5 (de) * 1979-01-23 1983-03-15 Cerberus Ag Verbindungseinrichtung zur verbindung eines sockelteils mit einem meldereinsatz in einem brandmelder.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813428A1 (fr) * 2000-08-25 2002-03-01 Arana Juan Carlos Ceron Dispositif pour la protection, l'installation et la maintenance des cameras de surveillance dans les transports en commun

Also Published As

Publication number Publication date
EP0810568B1 (fr) 2002-09-04
DE29609124U1 (de) 1996-08-14
EP0810568A3 (fr) 1998-01-14
DE59708105D1 (de) 2002-10-10
ATE223605T1 (de) 2002-09-15

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