EP0022831B1 - Dispositif d'alarme pour une porte - Google Patents

Dispositif d'alarme pour une porte Download PDF

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Publication number
EP0022831B1
EP0022831B1 EP80900233A EP80900233A EP0022831B1 EP 0022831 B1 EP0022831 B1 EP 0022831B1 EP 80900233 A EP80900233 A EP 80900233A EP 80900233 A EP80900233 A EP 80900233A EP 0022831 B1 EP0022831 B1 EP 0022831B1
Authority
EP
European Patent Office
Prior art keywords
door
closed
switch
bolt
switches
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
EP80900233A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0022831A1 (fr
Inventor
Serge-André DROZ
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
Publication of EP0022831A1 publication Critical patent/EP0022831A1/fr
Application granted granted Critical
Publication of EP0022831B1 publication Critical patent/EP0022831B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Definitions

  • the invention relates to an alarm device for a door, automatically deactivated during lawful access, either by the use of a key, or by the lock being already unlocked.
  • the switch SW1 is arranged in the keeper, on the frame, so as to open when the bolt of the lock is operated, thus cutting the supply line coming from the current source S.
  • the switch SW2 is placed for example on the top of the doorframe and opens if you open or force the door. If the door is opened normally, having used a key, opening SW2 has no effect because SW1, open, cuts the power. If, on the other hand, the door is forced without operating the lock, the opening of SW2 triggers the alarm because the relay Ry has contacts C1, C2 which close the alarm circuit passing through the siren Bz as soon as the coil Co stops d be fed. In other words, the relay Ry is closed at rest.
  • the contacts are arranged on the frame, which makes the installation less convenient.
  • the present invention aims to remedy such drawbacks by proposing a device where the relay does not consume at rest and where the contacts are provided on the door leaf, which makes possible a compact design and facilitates installation of the device.
  • the subject of the invention is therefore an alarm device for a door, automatically deactivated during lawful access, either by using a key, or by the lock being already unlocked, comprising a circuit control comprising, in series, an electrical power source and switches, one of which is controlled by the bolt and closed except when the bolt is retracted, and a relay locking in the working position during simultaneous closing of the switches, and an alarm circuit actuated by the relay when the latter is in the working position which, to remedy the aforementioned drawbacks, is characterized in that the control circuit comprises three switches, the first and the second being respectively closed and open when the door is closed and, conversely, open and closed when the door is wide open, but nevertheless simultaneously closed for the door operating phase where, the door being just ajar e, the bolt is necessarily retracted, the third being the aforementioned switch controlled by the bolt.
  • Fig. 2 schematically shows an alarm device 40 mounted on a door 10.
  • the door 10 conventionally comprises a lock 22 with cylinder 24, controlling a bolt 28, also shown in the retracted position 28 '.
  • the bolt 28 is also controlled by the door handle.
  • the diagnostic 40 represented schematically, comprises an alarm member 120, for example a siren, or a remote control of the alarm signal, or an automatic call control.
  • the alarm device 120 is controlled by a relay 110, and in 100 are provided cells or batteries for the supply of electrical energy. Some secondary circuit details and connections are not shown.
  • the device 40 comprises three switches A, B and C. Each of these switches comprises a mechanical part comprising a cylindrical socket 51 movable axially in a housing 50 arranged in the device 40.
  • the socket 51 has an axial threaded hole in which is engaged the adjustable way a threaded rod 52.
  • switches A and B depends on the position of the door, and the state of switch C depends on the position of the bolt, as shown in Figures 3 and 4.
  • the sockets of the respective switches are pushed back by elastic blades 60, 70 and 90, which at the same time serve as electrical contact elements.
  • the blade 90 presses on the socket 51A of the switch A.
  • the blade is made of metal, it is fixed by a screw 62 to the housing of the device 40, which is made of insulating material, for example plastic.
  • the socket 51A also supports a portion of the blade 60.
  • the socket is made of conductive material or, at least, has a conductive element where it cooperates with the blades 90 and 60.
  • Another portion of the blade 60 presses on the socket 51C of the switch C and is also retained by a stop 64C.
  • a portion of another blade 70 also presses on the socket 51C.
  • the rod 52C abuts against the bolt 28 when the latter is in the normal position, that is to say projecting relative to the edge of the door.
  • the bolt is retracted at 28 ', the rod 52C is no longer in abutment, so that the blade 70 can push the socket 51C completely into its housing 50C.
  • the contact between the blade 70 and the blade 60 is then cut, because the blade 60 is retained by a stop 64C, in a manner similar to that which was the case for the switch A.
  • the other portion of the blade 70 relates to the socket 51 B. When this socket is completely pushed back into its housing, the blade can bear on a terminal 80. When the socket 51 B is sufficiently protruding, the contact between the blade 70 and the terminal 80 is cut.
  • the rods 52A, B and C leave the device 40 at the base of the respective housings 50A, B and C and engage in the respective holes 53A, B and C provided for this purpose in the rim 14 of the door 10.
  • a template or use the housing of the device 40, the holes made at the bottom of the housings 50 making it possible to precisely position the location of the holes 53 that must be drilled in the door.
  • the housing is constructed with a bottom plate (not shown), it can also be used as a template.
  • Fig. 3 represents the door seen from edge with partial sections. We can see there what the states of the switches are when the door is wide open and the latch 28 protruding, the door handle having been released. Switch A is then open and switches B and C closed.
  • Fig. 4 shows the door closed and the jamb in partial section along a plane passing through the axes of the rods 52 of the switches.
  • the hole 53C is extended by a hole 33 made in the keeper, and possibly drilled at the same time as the hole 53C.
  • the bolt is supposed to be retracted, so that the rod 52C is no longer in abutment, which allows the socket 51C to be fully pushed back into its housing by the blade 70. Because of the presence of the stop 64C, the blade 60 cannot come into contact with the socket 51C: the switch C is therefore open.
  • the rod 52A of the switch A Opposite the rod 52A of the switch A is a peg 36 housed in a hole 37 extending the hole 53A formed in the leaf 14 of the door 10 and, possibly, drilled on the same occasion as it.
  • this piton pushes back the rod 52A so that the socket 51A leaving its housing establishes contact between the blades 90 and 60.
  • the piton meets the following purpose.
  • the fact that the rod 52B is projecting is of little consequence. If it is pushed back accidentally or voluntarily by a child, for example, this opens the switch B, but it is already in series with an open switch: A.
  • each rod 52 is adjustably engaged in the axial threaded hole of the corresponding socket 51.
  • the sleeve 51 may have an external axial groove cooperating with a corresponding axial groove in the housing 50 to prevent the sleeve from turning when the threaded rod is adjusted by screwing (not shown in the drawing). This adjustment makes it possible to obtain the behavior provided for the switches, as described more particularly with reference to FIGS. 8 and 9.
  • FIG. 5 represents a partial horizontal section passing through the axis of the socket 51 C; the bolt is shown in the non-retracted position and it is engaged in the strike 32.
  • the rod 52C passes through the hole 33 of the strike 32 and is in abutment on the bolt 28.
  • the socket 51C is therefore pushed back into the projecting position out of its housing 50C. Switch C is therefore closed.
  • FIG. 6 shows a possible electrical diagram for the alarm device.
  • the switches A. B and C are in the respective states they have when the door is closed and the bolt is in the normal position.
  • the three switches are in series; an electrical energy source 201 is inserted in the series.
  • the circuit is closed by the coil of a relay 210.
  • the latter must be irreversible. By this is meant that if a pulse excites the coil and, thus, actuates a controlled switch 214, the latter must not return to its rest position even if the coil ceases to be excited. In other words, it only takes one pulse for the relay to "stick”.
  • the alarm circuit When the relay 210 is actuated, closing the contact 214, the alarm circuit is excited which comprises a power source 202 and an alarm device 220 such as a siren or an apparatus controlling an automatic telephone call or actuating at distance an alarm signal.
  • an alarm device 220 such as a siren or an apparatus controlling an automatic telephone call or actuating at distance an alarm signal.
  • the source 201 could be placed elsewhere, in the circuit, and the order of the switches could be modified without changing the principle of series mounting.
  • an additional switch D can be provided, constituted by a particular detector which reacts by closing when an attempt is made to force the lock itself. This switch is placed in parallel with B and C, normally open.
  • FIG. 7 represents a variant where the device 40 has only one power supply 200.
  • the switch D provided as a variant can be arranged in parallel either with B and C, as shown, or with the whole series B, C, A
  • the circuit is such that current is consumed only when the alarm is triggered. However, a battery can, in the long run, run down without being used. It is useful to provide on the alarm device 40 a small circuit for indicating the charge of the battery or the battery. This circuit, not shown, would be connected to the terminals of the power supply. It can include, for example, a working contact switch controlled by a push button, in series with a voltmeter, or an indicator which only lights up if the charge is still sufficient.
  • FIG. 8 represents the states of switches A, B and C as a function of the different phases of the operation of a door.
  • I the door is closed and the bolt is in the normal position (28, fig. 5).
  • II the handle is actuated, the bolt is retracted and the door still closed (fig. 4).
  • III the door is just ajar.
  • IV the door is opened more widely, but the bolt is still necessarily retracted.
  • IV you can release the bolt.
  • V the bolt is released (fig. 3).
  • VI all switches are closed. This can only happen if you force the door without having a key. C can therefore only be closed.
  • switch B closes before switch A opens, as in phase III, except that C being closed also, the relay will be energized and the alarm given. It takes a while to disassemble the device and reach the batteries or the relay release lever, and this time is sufficient for the signal to be already transmitted before the perpetrator has the opportunity to stop the operation of the device.
  • Fig. 9 represents in the form of a diagram the phases I to V as a function of the angular position a of the door.
  • Curve P relates to the operation of the bolt.
  • the dotted line indicates that the bolt can be released later than necessary (or that, when closed, the bolt can be retracted earlier than necessary).
  • Curves C, B, A relate to switches, 1 signifying closed switch, O signifying open switch.
  • AB is the product of functions A and B.
  • Fig. 10 shows an embodiment of the device where the switches A, B and C are arranged outside the door, so as to avoid the obligation to pierce the latter.
  • the switches A and B do not pose any particular problems.
  • FIGS. 11 to 13 For the switch C a different arrangement is provided, illustrated in FIGS. 11 to 13.
  • Two contact blades 150 are arranged, one above the bolt, the other below. These blades are bent so as to conform to the profile of the door.
  • a conductive portion 159 At the end of each of the blades is a conductive portion 159, slightly protruding and in elastic support against the bolt 28 when it is not retracted. The metal bolt then makes contact. When the bolt is retracted, the ignition is off, as provided for the operation of the device.
  • the contact blades 150 cooperate with the bolt 28 to constitute the switch C.
  • Each plate is clamped in position against the housing of the device 40 by a plate 154 tightened by screws 156.
  • the plate 154 is screwed is made of insulating material.
  • Each blade has small teeth 151 which penetrate into the insulator of the plate when it is screwed, thus immobilizing the blade in a rigorous manner.
  • these teeth 151 could cooperate with a conductive area to establish the electrical contact.
  • the electrical connections of the blades are not shown, but their realization does not offer any particular difficulty.
  • Fig. 13 is a view similar to that of FIG. 2. Note that the switches A and B are arranged on bosses 41, 42 to prevent the door from being pierced. The blades 150, not visible in FIG. 13, are held by the plate 154.
  • Fig. 14 is a view similar to FIG. 12 showing a variant for producing the switch C.
  • a single blade 170 carries two contacts 178, 179 cooperating with the bolt 28. Each contact is connected to a conductor, respectively 188 and 189, shown diagrammatically in the figure.
  • the blade 170 is fixed to the housing by a screw 180 and a washer 181.
  • Each conductor could for example be constituted by a metallic deposit on a plate 170 made of insulating material.
  • a conductive plate 170 constituting one of the two conductors, for example 189, the other conductor 188 being a metal strip bonded with interposition of insulation on the strip 170.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Lock And Its Accessories (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Microwave Tubes (AREA)
EP80900233A 1979-02-01 1980-01-31 Dispositif d'alarme pour une porte Expired EP0022831B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH99179A CH627572A5 (fr) 1979-02-01 1979-02-01 Dispositif d'alarme pour une porte, automatiquement mis hors fonction lors d'un acces licite.
CH991/79 1979-02-01

Publications (2)

Publication Number Publication Date
EP0022831A1 EP0022831A1 (fr) 1981-01-28
EP0022831B1 true EP0022831B1 (fr) 1983-06-01

Family

ID=4199913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900233A Expired EP0022831B1 (fr) 1979-02-01 1980-01-31 Dispositif d'alarme pour une porte

Country Status (8)

Country Link
US (1) US4370644A (enrdf_load_stackoverflow)
EP (1) EP0022831B1 (enrdf_load_stackoverflow)
JP (1) JPS55501158A (enrdf_load_stackoverflow)
AT (1) ATE3676T1 (enrdf_load_stackoverflow)
CH (1) CH627572A5 (enrdf_load_stackoverflow)
DE (1) DE3063559D1 (enrdf_load_stackoverflow)
WO (1) WO1980001617A1 (enrdf_load_stackoverflow)
ZA (1) ZA80566B (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457101B (sv) * 1985-03-04 1988-11-28 Berndt Eriksson Anordning vid inbrottslarmskyddade doerrar
US4803467A (en) * 1988-02-23 1989-02-07 George Peters Magnetic key lock provided with an alarm system
US4937560A (en) * 1988-08-11 1990-06-26 Nourmand Stephan S Security system with door deadbolt interlock
US4970494A (en) * 1989-11-20 1990-11-13 Keely William A Radio controlled home security system
US5041814A (en) * 1990-06-20 1991-08-20 Lin Fu Tong E Lock with alarm device
US5311168A (en) * 1992-09-10 1994-05-10 Pease Industries, Inc. Lock set with self-contained door alarm and annunciator system
US5493279A (en) * 1993-03-24 1996-02-20 Mas-Hamilton Group Electronic combination lock with covert entry detection feature and method of covert entry detection
DE4318518C1 (de) * 1993-06-03 1994-09-01 Fuss Fritz Gmbh & Co Türüberwachungsvorrichtung
US6812836B2 (en) 2002-11-07 2004-11-02 Napco Security Systems, Inc. Alarm system armed and disarmed by a door contact
US6963280B2 (en) * 2003-06-16 2005-11-08 Honeywell International Inc. Door security device for use in security systems
US20050184868A1 (en) * 2004-02-19 2005-08-25 Wms Gaming Inc. System and method for detecting tampering in a gaming machine
US7466237B1 (en) 2006-08-16 2008-12-16 Cook Francis E Door suicide alarm
USD968159S1 (en) * 2019-11-22 2022-11-01 Global Industrial Distribution Inc. Bottle filler fountain access door
CN112177466B (zh) * 2020-10-09 2022-03-01 移康智能科技（上海）股份有限公司 一种带保护电路的接触式过线门组件

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE569334C (de) * 1933-02-01 Walter Gruhl Walzenwickelvorrichtung fuer Zigarettenmaschinen
US3653022A (en) * 1969-05-09 1972-03-28 Murry Tall Burglar and fire alarm system
US3696374A (en) * 1970-09-25 1972-10-03 Hardware & Ind Tool Co Inc Cabinet with jam switch and alarm system
US3803575A (en) * 1971-02-15 1974-04-09 M Gotanda Device for setting-up a power source of electrical alarm
US3848242A (en) * 1972-11-29 1974-11-12 A Campagna Burglar alarm system with selectable latching mode
JPS5235974A (en) * 1975-09-16 1977-03-18 Toshiba Corp Magnetron
US4170005A (en) * 1977-12-19 1979-10-02 Duke Norman G Switch operated alarm circuit

Also Published As

Publication number Publication date
JPS55501158A (enrdf_load_stackoverflow) 1980-12-18
DE3063559D1 (en) 1983-07-07
US4370644A (en) 1983-01-25
ZA80566B (en) 1981-02-25
CH627572A5 (fr) 1982-01-15
EP0022831A1 (fr) 1981-01-28
ATE3676T1 (de) 1983-06-15
WO1980001617A1 (en) 1980-08-07

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