EP0026865B1 - Vorrichtung zur Entnahme eines Brandmelders aus einem Sockel - Google Patents

Vorrichtung zur Entnahme eines Brandmelders aus einem Sockel Download PDF

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Publication number
EP0026865B1
EP0026865B1 EP19800105626 EP80105626A EP0026865B1 EP 0026865 B1 EP0026865 B1 EP 0026865B1 EP 19800105626 EP19800105626 EP 19800105626 EP 80105626 A EP80105626 A EP 80105626A EP 0026865 B1 EP0026865 B1 EP 0026865B1
Authority
EP
European Patent Office
Prior art keywords
fire detector
cylindrical component
fire
cylindrical
removal
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
Application number
EP19800105626
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0026865A2 (de
EP0026865A3 (en
Inventor
Rudolf Fässler
Wolfgang Schubert
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Publication of EP0026865A2 publication Critical patent/EP0026865A2/de
Publication of EP0026865A3 publication Critical patent/EP0026865A3/de
Application granted granted Critical
Publication of EP0026865B1 publication Critical patent/EP0026865B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Definitions

  • the invention relates to a device for removing a fire detector with an essentially rotationally symmetrical shape from a bayonet base, which device has a cylindrical component which can be pushed over the fire detector and whose axis corresponds to the axis of rotation of the fire detector.
  • Such devices are known, for example, from Swiss Patents No. 508251 and No. 558 963. They serve a fire detector, the outer shape and housing of which are essentially, ie. H. apart from, for example, openings and retaining webs, rotationally symmetrical, i.e. e.g. is cylindrical or slightly conical, from a base. In most cases, this base is designed as a bayonet base. To insert the fire detector into the base and to remove the same from this base, the fire detector must therefore be rotated about its axis.
  • fire detectors and their bases are usually installed in places where they are not easily accessible by hand. Removing the fire alarm from a base, for example for inspection and cleaning purposes, is therefore very time-consuming without tools.
  • Devices have already been described in the preceding publications with which a fire alarm can be removed from a base quickly and easily, even in the case of an unfavorable placement.
  • the previously known fire detectors described contain locking elements which make it impossible to release the bayonet lock without aids.
  • this locking takes place by means of a movable element which slips into a recess in the fire alarm.
  • the removal device suitable for releasing the closure consists of a cylindrical component which presses the locking element mentioned back into its starting position as soon as the cylindrical component is pushed over the fire detector.
  • a rubber insert in the cylindrical component clamps the fire detector so that it can be rotated around its axis so that the bayonet catch is released.
  • a disadvantage of this known device is that it can only be used if the dimensions of the fire detectors can be kept within very narrow tolerances. Even if these tolerances are slightly exceeded, the fire detector cannot be securely clamped and the locking mechanism can no longer be safely released.
  • the known removal devices were not usable for different types of fire detectors, which may also be used mixed in the same system, so that a special removal device was required for each detector type.
  • the object of the invention is to eliminate the above-mentioned disadvantages of previously known devices and, in particular, to provide a device for removing a fire detector from a base, which can be used for fire detectors with greater tolerances of the external dimensions than before, and at the same time can be used for fire detectors of different types and dimensions is.
  • this object is achieved in that a clamping device is provided which has at least one element which, when an axially directed pressure is exerted, can be pushed inwards in the radial direction until it is seated on the outer surface of the fire detector.
  • a bushing 9 is inserted into the upper opening of a long holding rod 10, which is designed as a tube and carries a plate 11 on its upper edge.
  • a sliding tube 12 is fitted so as to be movable in the axial direction.
  • this sliding tube In the lower part of this sliding tube there is an end plate 18, while a stamp 13 is inserted in the upper part thereof, the position of the stamp being fixed by a pin 14 inserted into one of the bores 15.
  • a stop plate 5 is attached to the upper end of the stamp 13, the upper side of which bears a rubber or plastic pad 6.
  • the sliding tube 12 with the plunger 13 and the stop plate 5 is pressed upwards by a spiral spring 19 arranged between the bushing 9 and the end plate 18.
  • this sleeve 8 On the stop plate 5 is by means of one or more, for. B. three, bracket 7 attached at a suitable distance above the stop plate 5, a sleeve 8.
  • the upper end of this sleeve 8 is shaped as a cylindrical component 3.
  • the opening of this cylindrical component 3 is provided in such a way that it is a little bit larger than the outside diameter of the fire detector 20 to be removed from a base.
  • a clamping device is attached to the sleeve 8, which comprises a movable element 1, the free end of which rests on an oblique piece of the strip 4.
  • a fire detector 20 shown schematically in the figure with a rotationally symmetrical e.g.
  • the device shown is placed over the fire detector from below, so that the cylindrical component 3 is guided over the outer wall 21 of the fire detector 20.
  • the device is pushed over the fire detector until its underside 22 touches the stop plate 5. If a further pressure is now exerted in the axial direction, the spring 19 is compressed, the plate 11 moves upward, as do the strips 4 attached to this plate 11.
  • the free ends of the movable elements 1 of the clamping device are pressed radially inwards until their jaws 2 are firmly seated on the outside 21 of the fire detector housing and thus clamp the fire detector.
  • the device can then be rotated with the fire detector clamped in place and the bayonet base released. After the connection has been released, the spring 19 relaxes again, so that the movable elements 1 spring back and the jaws 2 release the fire detector and the latter can be removed from the device.
  • the device can be adjusted by changing the position of the plunger 13 relative to the sliding tube 12. This is done by inserting the pin 14 into one of the other bores 15 of the stamp. A suitable stepless height adjustment can of course also be provided.
  • the cylindrical component 13 can be completely slipped over the fire detector 20, namely into the groove between the fire detector and base bead.
  • This is particularly expedient in the case of fire detectors which are protected in a base by a locking bolt against unauthorized removal, as described, for example, in Swiss Patent No. 558,963.
  • the locking bolt is pressed back into this gap by completely pressing the cylindrical component 3, and the fire detector can be detached from the base.
  • Fig. 2 shows such a device, in which the parts identical to the previous figure have the same designations.
  • the device according to FIG. 2 differs only in the design of the sleeve.
  • this consists of an outer sleeve part 28 and the cylindrical component 23 movable in this part.
  • a plurality of springs 24 are provided which press the part 23 upwards in comparison to the part 28.
  • three slots 25 are provided in the inner part 23, through which the clamping jaws 2 protrude from the outer part 28 through the inner cylinder part 23 and can clamp the fire detector 20.
  • the inner cylindrical part 23 When this device is pushed onto a fire detector 20, the inner cylindrical part 23 first slides into the slot between the fire detector and base and presses the locking bolt back. If a further pressure is now exerted, the spring 24 is tensioned and the rest of the device is also pushed over the fire detector until the jaws of the fire detector clamps and the bayonet catch can be unlocked.
  • the mobility of the two sleeve parts 23 and 28 relative to one another means that the device can in any case be pushed far enough over the fire detector to ensure secure clamping and at the same time the locking is released. In order to obtain a larger margin, it can be expedient to make the stop adjustable for the mobility of the two sleeve parts 23 and 28 against each other, e.g.
  • a device designed in this way for removing a fire detector from a base thus shows a largely universal usability in fire detectors with a rotationally symmetrical shape of different structural heights without the need to maintain close tolerances.
  • stop plate 5 and the cylindrical component 3 or 23 may be expedient to design the stop plate 5 and the cylindrical component 3 or 23 to be movable relative to one another.
  • This embodiment differs from the devices according to FIGS. 1 and 2 that the holding tube 10 carries a closure plate 32, in the center of which a ball joint 30 is arranged.
  • a rod 31 which is displaceably guided by the end plate 18 of the sliding tube 12 against the force of the spring 19, can be rotated with respect to the mounting tube 10 to a certain angle.
  • the sliding tube 12 is displaceable in the sleeve 29, which is connected to the rod 31.
  • the funnel 33 attached to the end plate 32 limits the possible angular deflection.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire Alarms (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Fire-Detection Mechanisms (AREA)
EP19800105626 1979-10-05 1980-09-19 Vorrichtung zur Entnahme eines Brandmelders aus einem Sockel Expired EP0026865B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH898679A CH639859A5 (de) 1979-10-05 1979-10-05 Vorrichtung zur entnahme eines brandmelders aus einem sockel.
CH8986/79 1979-10-05

Publications (3)

Publication Number Publication Date
EP0026865A2 EP0026865A2 (de) 1981-04-15
EP0026865A3 EP0026865A3 (en) 1982-02-03
EP0026865B1 true EP0026865B1 (de) 1985-04-10

Family

ID=4347074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800105626 Expired EP0026865B1 (de) 1979-10-05 1980-09-19 Vorrichtung zur Entnahme eines Brandmelders aus einem Sockel

Country Status (4)

Country Link
EP (1) EP0026865B1 (enrdf_load_stackoverflow)
JP (1) JPS6240609Y2 (enrdf_load_stackoverflow)
CH (1) CH639859A5 (enrdf_load_stackoverflow)
DE (1) DE3070454D1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198383A (en) * 1986-11-22 1988-06-15 Anthony Francis Flanagan Gripping device
JP2584866Y2 (ja) * 1991-05-01 1998-11-11 能美防災株式会社 火災感知器の着脱具
JP2574674Y2 (ja) * 1991-05-01 1998-06-18 能美防災株式会社 火災感知器の着脱具
AU2003221900A1 (en) * 2002-04-11 2003-10-27 Laura L. Mcgreal Smoke alarm and mounting kit
DE10353837B4 (de) * 2003-11-18 2017-05-24 Robert Bosch Gmbh Prüfeinrichtung für Brandmelder
EP3038500A4 (en) * 2013-08-27 2017-05-31 Holy Smoke Alarms Pty Ltd Smoke alarm mounting and dismounting system and method
DE102018113461A1 (de) 2018-06-06 2019-12-12 Clemens Willy Manuell handhabbares Arbeitsgerät zum Errichten und Warten von Detektoren
CN111958524A (zh) * 2020-09-23 2020-11-20 东风汽车集团有限公司 圆柱快速定心机构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH508251A (de) * 1970-07-23 1971-05-31 Cerberus Ag Ionisationsfeuermelder
US3900795A (en) * 1973-08-15 1975-08-19 Honeywell Inc Installation and test tool for ionization smoke detector
CH558963A (de) * 1973-12-07 1975-02-14 Cerberus Ag Brandmelder.
JPS5617061Y2 (enrdf_load_stackoverflow) * 1977-08-30 1981-04-21

Also Published As

Publication number Publication date
DE3070454D1 (en) 1985-05-15
EP0026865A2 (de) 1981-04-15
CH639859A5 (de) 1983-12-15
JPS6240609Y2 (enrdf_load_stackoverflow) 1987-10-17
EP0026865A3 (en) 1982-02-03
JPS5656356U (enrdf_load_stackoverflow) 1981-05-15

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