EP0834847B1 - Electrical equipment for anti-theft installations or similar - Google Patents

Electrical equipment for anti-theft installations or similar Download PDF

Info

Publication number
EP0834847B1
EP0834847B1 EP97200123A EP97200123A EP0834847B1 EP 0834847 B1 EP0834847 B1 EP 0834847B1 EP 97200123 A EP97200123 A EP 97200123A EP 97200123 A EP97200123 A EP 97200123A EP 0834847 B1 EP0834847 B1 EP 0834847B1
Authority
EP
European Patent Office
Prior art keywords
actuating
aperture
closing
electrical equipment
box
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
EP97200123A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0834847A1 (en
Inventor
Antonio Aldizio
Ernesto Santini
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.)
BTicino SpA
Original Assignee
BTicino SpA
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 BTicino SpA filed Critical BTicino SpA
Priority to SI9730190T priority Critical patent/SI0834847T1/xx
Publication of EP0834847A1 publication Critical patent/EP0834847A1/en
Application granted granted Critical
Publication of EP0834847B1 publication Critical patent/EP0834847B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/046—Monitoring of the detection circuits prevention of tampering with detection circuits

Definitions

  • the present invention relates to electrical installations for civil and industrial applications and, more particularly, to electrical equipment for anti-theft installations and installations for indicating break-in or tampering, as defined in the preamble of claim 1.
  • FR-A-2 602 078 discloses a box with an aperture, a switch having an operating member and an actuating member in the form of a screw which is fixed removably to the box; the screw closes the aperture and acts on the switch by pushing it
  • US-A-5 486 665 discloses a box with an aperture, a switch having an operating element and an actuating member, which is fixed removably to the box; the piston acts on the switch when it is pressed.
  • EP-A-0 786 751 discloses a box with an aperture, a switch having an operating lever and an actuating member in the form of a screw which is fixed removably to the box; the screw projects from a wall on which the box is mounted and acts on the lever.
  • different pieces of equipment of this type may be fitted together, for example in a box embedded in a wall, but not all of them are to be activated by the removal of the covering panel of the box.
  • This requires operations which reduce the speed of installation of the equipment, and which may also result in irreversible modifications of the equipment, so that it can no longer be used in such a way that it is activated by the removal of the panel, but, if this becomes necessary, must be replaced.
  • the equipment which is illustrated comprises a box-shaped structure 10, made of transparent plastic for example, containing a push-button switch 11 fitted on a printed circuit board 12 together with other components which are not shown because they are irrelevant for the purposes of the description of the invention.
  • the box-shaped structure 10 has a circular aperture 17 in its upper wall 9, next to the arm 16 of the spring 13.
  • a closing and actuating element 18, in the form of a cylindrical plug with a flange 8, may be inserted into. the aperture 17 and fixed removably; once fixed, this element presses with its end part 7 on the arm 16 of the spring in such a way that it acts on the operating element 15 and thus actuates the switch 11.
  • an actuating unit 19 may be inserted and fixed removably in the aperture 17.
  • This actuating unit comprises a push rod 20 which is axially slidable inside a bush 21 which is of cylindrical shape and has a flange 8' so that it can be inserted and fixed removably in the aperture 17 in the same way as the plug 18.
  • the push rod 20 Once in position, the push rod 20 has its inner end in contact with the arm 16 of the spring but does not move it. If a sufficient axial force is applied to the outer end of the push rod 20, the elastic resistance of the spring is overcome and the projection 14 of the spring is moved in such a way that it acts on the operating element 15 and thus actuates the push-button switch 11.
  • the aperture 17, which has a diameter slightly larger than that of the plug 18 and of the bush 21, has two diametrically opposed notches 22, and the plug and the bush have two corresponding projections, indicated by 23 and 23' respectively.
  • the edge of the aperture 17 also has two inclined planes 24 which enable the plug 18 or the unit 21 to be fastened in the aperture by the interference between the flange 8 or 8', the wall 9 and the projections 23 or 23'.
  • the equipment described may be used in two separate configurations, namely with the plug 18 inserted and therefore with the switch 11 permanently actuated, or with the actuating unit 19 inserted and therefore with the switch actuated only when the push rod 20 is pressed. It is thus possible to use identical pieces of equipment fitted together in the same box and, by using the plug or actuating unit selectively, making only one piece of equipment or only some of the equipment sensitive to the removal of the covering panel of the box. It is also possible, when necessary, to change the initial disposition simply by replacing a plug with an actuating unit, or vice versa.
  • the structure described above is also suitable for being fitted upside down on a surface of a mounting element, for example on the base of a box which in turn is fixed to a wall.
  • the box indicated by the number 30 in the drawing, is provided with a rod 31 projecting from the base and integral with it, and has a shape and size such that it has a housing in which the box-shaped structure 10 may be fixed removably by suitable fixing means 32, 32'.
  • the rod 31 is inserted into its aperture 17 and engages with the arm 16 of the spring, so that the push-button switch 11 is actuated.
  • the actuating member of the switch consists of the rod 31, and the triggering of an alarm or indicator device associated with the electrical equipment is caused by the detachment of the structure 10 from its housing in the box 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Casings For Electric Apparatus (AREA)
  • Organic Insulating Materials (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP97200123A 1996-10-07 1997-01-15 Electrical equipment for anti-theft installations or similar Expired - Lifetime EP0834847B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730190T SI0834847T1 (en) 1996-10-07 1997-01-15 Electrical equipment for anti-theft installations or similar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MI002064A IT1284922B1 (it) 1996-10-07 1996-10-07 Apparecchio elettrico per impianti antifurto o simili
ITMI962064 1996-10-07

Publications (2)

Publication Number Publication Date
EP0834847A1 EP0834847A1 (en) 1998-04-08
EP0834847B1 true EP0834847B1 (en) 2001-10-31

Family

ID=11374986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200123A Expired - Lifetime EP0834847B1 (en) 1996-10-07 1997-01-15 Electrical equipment for anti-theft installations or similar

Country Status (9)

Country Link
EP (1) EP0834847B1 (es)
AT (1) ATE208076T1 (es)
DE (1) DE69707805T2 (es)
DK (1) DK0834847T3 (es)
ES (1) ES2164982T3 (es)
HK (1) HK1009870A1 (es)
IT (1) IT1284922B1 (es)
PT (1) PT834847E (es)
SI (1) SI0834847T1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022125350A1 (en) * 2020-12-09 2022-06-16 Ademco Inc. Selectively enabled tamper detection

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59907541D1 (de) 1999-03-08 2003-12-04 Siemens Building Tech Ag Gehäuse für einen Gefahrenmelder
EP1227452A1 (de) * 2001-01-19 2002-07-31 Siemens Building Technologies AG Sicherheitssystem und Gefahrenmelder zur Überwachung von Gefahrenkenngrössen
US7004784B2 (en) * 2004-02-26 2006-02-28 Robert Bosch Gmbh Tamper detection for security system
BE1018625A5 (nl) * 2009-01-15 2011-05-03 Rwa Bvba Sirenesysteem met ingebouwde magnetische sabotagedetectie en dubbele gecompartimenteerde hoorn.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092641A (en) * 1976-07-06 1978-05-30 Statitrol Corporation Security interlock switch system for smoke detectors and the like
US4267549A (en) * 1980-01-31 1981-05-12 Taylor John D Pull station protector
GB2212343A (en) * 1987-11-12 1989-07-19 Peter Elliott Electrical junction
US5486665A (en) * 1993-04-30 1996-01-23 Robot-Coupe Snc Safety switch for a food processor
EP0786751A2 (de) * 1996-01-29 1997-07-30 GRUNDIG Aktiengesellschaft Vorrichtung zur Befestigung von Komponenten von Alarmanlagen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8616036U1 (de) * 1986-06-13 1987-10-15 S. Franzen Söhne (GmbH & Co), 5650 Solingen Kontaktschalter für einen Bewegungsmelder
FR2602078A1 (fr) * 1986-07-24 1988-01-29 Signal Vision Sa Sirene d'alarme a dispositif d'inhibition de la securite d'autoprotection.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092641A (en) * 1976-07-06 1978-05-30 Statitrol Corporation Security interlock switch system for smoke detectors and the like
US4267549A (en) * 1980-01-31 1981-05-12 Taylor John D Pull station protector
GB2212343A (en) * 1987-11-12 1989-07-19 Peter Elliott Electrical junction
US5486665A (en) * 1993-04-30 1996-01-23 Robot-Coupe Snc Safety switch for a food processor
EP0786751A2 (de) * 1996-01-29 1997-07-30 GRUNDIG Aktiengesellschaft Vorrichtung zur Befestigung von Komponenten von Alarmanlagen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022125350A1 (en) * 2020-12-09 2022-06-16 Ademco Inc. Selectively enabled tamper detection

Also Published As

Publication number Publication date
IT1284922B1 (it) 1998-05-28
DK0834847T3 (da) 2001-11-19
EP0834847A1 (en) 1998-04-08
SI0834847T1 (en) 2002-02-28
HK1009870A1 (en) 1999-06-11
DE69707805D1 (de) 2001-12-06
ES2164982T3 (es) 2002-03-01
DE69707805T2 (de) 2002-04-04
PT834847E (pt) 2002-02-28
ITMI962064A1 (it) 1998-04-07
ATE208076T1 (de) 2001-11-15

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