EP1091063A2 - Serrure à billes pour etiquette antivol - Google Patents

Serrure à billes pour etiquette antivol Download PDF

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Publication number
EP1091063A2
EP1091063A2 EP00203503A EP00203503A EP1091063A2 EP 1091063 A2 EP1091063 A2 EP 1091063A2 EP 00203503 A EP00203503 A EP 00203503A EP 00203503 A EP00203503 A EP 00203503A EP 1091063 A2 EP1091063 A2 EP 1091063A2
Authority
EP
European Patent Office
Prior art keywords
ball
uncoupling
balls
ball lock
lock according
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.)
Withdrawn
Application number
EP00203503A
Other languages
German (de)
English (en)
Other versions
EP1091063A3 (fr
Inventor
Renatus Jacobus Leonardus Zeelen
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.)
Nederlandsche Apparatenfabriek NEDAP NV
Original Assignee
Nederlandsche Apparatenfabriek NEDAP NV
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 Nederlandsche Apparatenfabriek NEDAP NV filed Critical Nederlandsche Apparatenfabriek NEDAP NV
Publication of EP1091063A2 publication Critical patent/EP1091063A2/fr
Publication of EP1091063A3 publication Critical patent/EP1091063A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
    • E05B73/0017—Anti-theft devices, e.g. tags or monitors, fixed to articles, e.g. clothes, and to be removed at the check-out of shops

Definitions

  • the invention relates to a ball lock, in particular for fastening anti-theft labels to shop articles, comprising a housing with a tapering receiving space for balls, a multiple of balls received in the receiving space, an opening in the receiving space for passing through a pin from outside the ball lock between the balls, of which receiving space the diameter decreases in a releasing direction in the receiving space directed towards the opening, a spring element for exerting on the balls such a force that the pin can be retained between the balls in collaboration with an inner wall of the receiving space, and an uncoupling body provided with a magnetic and/or magnetizable material for exerting, by means of a magnetic uncoupling field, such a force on the spring element that the pin jammed between the balls is released and can be removed from the opening.
  • a protective needle is inserted in a central opening of a housing in which are contained, in a conically shaped space, one or several balls which are pressed against the conical walls by a spiral spring.
  • the invention also relates to an assembly comprising an anti-theft label and a ball lock.
  • the invention further relates to a process for releasing a pin from the ball lock.
  • the wafers are fastened to these products.
  • These wafers are electronic detection plates which, when located in the electromagnetic field of the gates which, normally speaking, are placed at entrances and exits of the shop spaces to be protected, can be detected.
  • the wafer is fastened to the article to be protected by means of a protective needle or a protective cord, which is passed through the article to be protected, after which the protective needle or cord is inserted in the ball lock of the wafer.
  • the wafer is now protected from fraudulent removal.
  • the wafer is removed by the shop personnel. This removal of the wafer from a protected article takes place by means of a magnetic field from an uncoupling apparatus which draws the balls free from the protective needle.
  • the wafer is detected at the shop exit by the gates placed there. These gates will then start giving a sound alarm and, optionally, a light signal.
  • the drawback of the present types of ball locks is that they can be uncoupled by means of a magnetic field caused by a single magnet or some magnets in stacked condition, placed or not placed in a housing functioning as pole shoe.
  • a potential shoplifter who possesses one or some sufficiently strong magnets to remove a wafer from a product and to leave the shop space with this product without causing an alarm.
  • the ball lock according to the invention is characterized in that the ball lock is further provided with a ball cage received in the receiving space so as to be, at least partly, movable in the releasing direction, in which ball cage the balls are received such that they can make contact with the inner wall of the receiving space and the pin, via which ball cage the spring element exerts the above force on the balls, and via which ball cage the uncoupling body can exert the force on the spring element so as to enable removal of the pin from the opening, which uncoupling body is connected with the ball cage so as to be movable with respect to the ball cage over a limited range, and which uncoupling body is provided with a multiple of magnetic and/or magnetizable parts, so that the uncoupling body, at a magnetic uncoupling field corresponding to these parts and composed of different magnetic fields, can move the ball cage with respect to the receiving space in the releasing direction against the force of the spring element to release the pin.
  • a ball lock provided with a ball cage is known per se from Dutch patent 1003781.
  • the ball cage is made of magnetizable material and therefore functions as uncoupling body.
  • This known ball lock can be released by means of a single magnet.
  • the object of the known ball cage primarily is to force the balls to remain mutually arranged in one plane with respect to each other. This has the result that when uncoupling the ball lock, using the single magnetic field, the balls are actively drawn loose out of the conically shaped space through the magnetic field also attracting the ball cage.
  • Figure 1 shows the present ball lock.
  • This ball lock is known and is described in patent 189054 (NL) of applicants.
  • Located in this ball lock are three hardened steel and magnetizable balls 7 in a deep-drawn steel lock bush 4. The balls are pressed down by a steel and magnetizable tubular rivet 5 and a spiral spring 6.
  • a lock housing 11 made of plastic is placed over this whole and is fastened to the lock bush by means of a snap connection. This composition is built into the wafer.
  • Figure 2 shows the construction of an assembly of a ball lock and a wafer according to the invention.
  • the wafer consists of two plastic dish parts 1 and 2.
  • the ball lock is placed in the heart of the wafer.
  • This ball lock comprises a round brass lock bush 4.
  • the lock bush 4 comprises a tapering receiving space 20.
  • the ball lock is further provided with the opening 22 for a pin 9.
  • the diameter of the receiving space 20 decreases in a releasing direction in the receiving space 20 directed towards the opening 22.
  • a ball cage 5 Placed in the lock bush 4 is a ball cage 5.
  • This ball cage is made of a non-magnetizable material, which is not attracted by a magnet.
  • three hardened steel balls 7. Provided in this ball cage are three hardened steel balls 7. The ball cage and the balls are pressed down in the lock bush by a spiral spring 6.
  • an uncoupling body 3 Placed below the upper edge of the ball cage is an uncoupling body 3, on which three magnetizable metal parts 8 to be attracted by some magnets are fastened.
  • This uncoupling body like the ball cage, is made of a material type which is not attracted by a magnet.
  • Figure 3 shows the situation when a pm or protective needle 9 is inserted at the bottom in the central opening 22 of the wafer.
  • the balls 7 then roll along the conical inner walls 24 of the lock bush 4 upwards against the pressure of the spiral spring 6.
  • the longitudinal direction of the needle located in the ball lock is also referred to as the releasing direction.
  • Figure 4 shows the situation when at the top of the ball lock a magnetic field is applied from one or two (permanent or electro-) magnets 10. Through this magnetic field a rotation and tilting will be effected at the uncoupling part 3 through the attraction of one or two of the metal parts 8. First, the uncoupling part will begin to rotate such that one or two of the metal parts 8 come to lie precisely opposite the magnet 10 or magnets 10. The tilting which results is that the uncoupling part 3 comes to lie askew in the wafer. This effect is clearly shown in Figure 4. Through this lying askew of the uncoupling part the ball cage will not move and, accordingly, not release the balls from the protective needle 9.
  • Figure 5 shows the situation when at the top of the ball lock a composite magnetic field is applied from three magnets 10, as shown in Figure 7.
  • the uncoupling part 3 By placing the three magnets 10 the uncoupling part 3, through the simultaneous attraction of the three magnetizable metal parts 8, will be attracted straight in the direction of the three magnets. Because the uncoupling part can rotate, the position of the three metal parts, when applying the magnetic field, has no influence. The uncoupling part itself will begin to rotate such that the three metal parts come to lie precisely opposite the magnets.
  • the ball cage 5 is taken along against the spring force of the spiral spring 6.
  • the ball cage for its part, draws the balls 7 out of the conical part of the lock bush 3. Because of this the balls come to lie free from the protective needle 9, and the jamming of the protective needle is removed.
  • the protective needle can now be removed from the ball lock and from the wafer.
  • the metal parts 8 may also be made of magnet material.
  • One of the three magnets 8 may then be placed on the uncoupling part with a deviating pole, that is to say with a deviating magnetization direction with respect to the other two magnets 8, so as to result in a polarization of, for instance, north-north-south.
  • a ring magnet 14 which is large enough to be placed around the plastic below which the ball lock is located, is kept to the wafer, the uncoupling part will also be drawn askew in the wafer and the protective needle will not come to lie free from the balls (see Figure 4).
  • the magnetic field applied with which the protective needle has to be uncoupled, must be adapted thereto.
  • the magnets 10 must then be specifically polarized in south-south-north.
  • the magnetization directions must then be reversed. If this is not the case, the uncoupling part will be drawn askew and the balls will not come to lie loose from the protective needle and the protective needle cannot be taken from the wafer.
  • Figure 6 shows the uncoupling part 3.
  • the uncoupling part is substantially dish-shaped and extends around the ball cage.
  • 3 is a plastic part and is not attracted by a magnet.
  • On this plastic part are fastened the three metal parts 8. These, however, must be able to be attracted by a magnet.
  • the magnetic and/or magnetizable parts 8 are positioned near an edge 16 of the dish-shaped uncoupling body.
  • Figure 7 shows the magnets with which the ball lock in the wafer can be uncoupled from the protective needle.
  • the ball lock may be designed as in Figure 5, with the parts 8 being magnetizable.
  • the manner in which the magnets are placed cause a very strong repelling force on each other. This renders it impossible to use several magnets offhand to illegally remove a wafer.
  • Figure 8 shows a construction of the ball lock and the wafer in which two parts 8 are fastened on the uncoupling body 3 in the form of magnets 8 which are each provided on the uncoupling body in a differently polarized condition.
  • Figure 9 shows the situation when at the top of the ball lock of Figure 8 a composite magnetic field is applied from two magnets 10 which are differently polarized. This will cause the uncoupling body 3 to rotate such that the two magnets 8, which are provided on the uncoupling part, come to lie precisely opposite the two magnets 10 of the field applied.
  • the uncoupling part will be attracted in the direction of the two magnets without tilting, during which the ball cage 5 is taken along against the spring force of the spiral spring 6.
  • the ball cage for its part, draws the balls 7 out of the conical part of the lock bush 4. As a result of this, the balls come to lie free from the protective needle 9 and the jamming of the protective needle is removed.
  • the protective needle can now be removed from the ball lock and from the wafer.
  • the invention therefore relates to a fastening device, in particular for fastening anti-shoplifting labels to shop articles, in which a protective needle can be passed through an opening in a ball lock having therein, in a conical space, one or several balls completely or partly surrounded by a ball cage which forces the balls to remain in a plane perpendicular to the protective needle, while they are pressed by a spiral spring against the wall of the conical space, so that through the balls jamming in the conical part the protective needle cannot be removed.
  • the balls are drawn loose via an uncoupling part only if this uncoupling part, without tilting, moves in the releasing direction of the balls by means of a special tool in the form of an uncoupling apparatus with two or more magnets and not when the uncoupling part tilts, which is the case with illegal attempts to uncouple the ball lock by means of one or several loose magnets by hand, because the forces which these magnets exert on each other render it practically impossible to manually get these magnets into a proper position corresponding to the position of the magnets in an uncoupling apparatus.
  • the uncoupling part rotates independently such that the two or more metal parts provided thereon come to lie precisely opposite the magnets of the composite magnetic field.
  • the uncoupling part By applying the uncoupling field from two or more magnets at the wafer, the uncoupling part is attracted such that this uncoupling part draws the ball cage out of the conical part, so that the balls come to lie loose from this conical part, as a result of which the protective needle comes to lie loose from the balls and can be removed from the ball lock and the wafer.
  • two or more magnets which are polarized in such a manner that a magnetic field applied, with the purpose of allowing the protective needle to come loose from the balls, also has to comply with a specific polarization. If this polarization is not satisfactory, then the uncoupling part will be drawn askew and the balls will not come to lie loose from the protective needle, which therefore cannot be removed from the wafer.
  • the invention is by no means limited to the above embodiments.
  • the parts 8 are separated from each other in distance, but this is not necessary.
  • the parts 8 or a number thereof may also connect together and/or form one whole.
  • the magnetization directions of the parts 8 may also coincide or enclose an angle of 180 degrees.
  • the parts have at least two at least almost opposite magnetization directions as shown in Figure 9.
  • the magnetization directions (which enclose an angle of 27 degrees with respect to each other) comprise components which are oppositely directed (that is to say enclose an angle of 180 degrees).
  • the balls may be made of a magnetizable or a non-magnetizable material.
EP00203503A 1999-10-08 2000-10-09 Serrure à billes pour etiquette antivol Withdrawn EP1091063A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1013251A NL1013251C2 (nl) 1999-10-08 1999-10-08 Bevestigingsinrichting.
NL1013251 1999-10-08

Publications (2)

Publication Number Publication Date
EP1091063A2 true EP1091063A2 (fr) 2001-04-11
EP1091063A3 EP1091063A3 (fr) 2001-04-18

Family

ID=19770021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00203503A Withdrawn EP1091063A3 (fr) 1999-10-08 2000-10-09 Serrure à billes pour etiquette antivol

Country Status (2)

Country Link
EP (1) EP1091063A3 (fr)
NL (1) NL1013251C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062414A1 (de) * 2005-12-23 2007-06-28 Werner Seeger Etikett für die Warensicherung
EP2119858A1 (fr) 2008-05-14 2009-11-18 N.V. Nederlandsche Apparatenfabriek NEDAP Dispositif d'attache
WO2010118318A1 (fr) * 2009-04-10 2010-10-14 Checkpoint Systems, Inc. Dispositif de sécurité à goupille-poussoir
CN101413358B (zh) * 2007-10-19 2011-12-28 深圳蓉华电子有限公司 磁屏蔽的复合磁强力开锁工具
CN103842601A (zh) * 2011-09-29 2014-06-04 艾利丹尼森公司 增加营销机会的防盗安全装置
US8875427B2 (en) 2012-03-30 2014-11-04 Southern Imperial, Inc. Rail including magnetic strip
CN112970615A (zh) * 2019-12-17 2021-06-18 卡尤迪智农科技(北京)有限公司 动物标签

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280256A (en) * 1978-01-03 1981-07-28 N.V. Nederlandsche Apparatenfabriek Nedap Fastener apparatus
DE3832835A1 (de) * 1988-09-28 1990-03-29 Windhorst Beteiligungsgesellsc Dauermagnetanordnung zum magnetischen entsperren der sperrvorrichtungen von warensicherungssystemen
WO1997031170A1 (fr) * 1996-02-22 1997-08-28 Albert Maurer Systeme de protection contre le vol de marchandises et dispositif pour la mise en oeuvre dudit procede
NL1003781C2 (nl) * 1996-08-12 1998-02-20 Nedap Nv Bevestigingsinrichting.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280256A (en) * 1978-01-03 1981-07-28 N.V. Nederlandsche Apparatenfabriek Nedap Fastener apparatus
DE3832835A1 (de) * 1988-09-28 1990-03-29 Windhorst Beteiligungsgesellsc Dauermagnetanordnung zum magnetischen entsperren der sperrvorrichtungen von warensicherungssystemen
WO1997031170A1 (fr) * 1996-02-22 1997-08-28 Albert Maurer Systeme de protection contre le vol de marchandises et dispositif pour la mise en oeuvre dudit procede
NL1003781C2 (nl) * 1996-08-12 1998-02-20 Nedap Nv Bevestigingsinrichting.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062414A1 (de) * 2005-12-23 2007-06-28 Werner Seeger Etikett für die Warensicherung
CN101413358B (zh) * 2007-10-19 2011-12-28 深圳蓉华电子有限公司 磁屏蔽的复合磁强力开锁工具
EP2119858A1 (fr) 2008-05-14 2009-11-18 N.V. Nederlandsche Apparatenfabriek NEDAP Dispositif d'attache
WO2010118318A1 (fr) * 2009-04-10 2010-10-14 Checkpoint Systems, Inc. Dispositif de sécurité à goupille-poussoir
US8683830B2 (en) 2009-04-10 2014-04-01 Checkpoint Systems, Inc. Push pin security device
CN103842601A (zh) * 2011-09-29 2014-06-04 艾利丹尼森公司 增加营销机会的防盗安全装置
US8875427B2 (en) 2012-03-30 2014-11-04 Southern Imperial, Inc. Rail including magnetic strip
CN112970615A (zh) * 2019-12-17 2021-06-18 卡尤迪智农科技(北京)有限公司 动物标签

Also Published As

Publication number Publication date
EP1091063A3 (fr) 2001-04-18
NL1013251C2 (nl) 2001-04-10

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