EP1067263A1 - Dispositif antivol et ensemble de pièces comprenant un tel dispositif - Google Patents
Dispositif antivol et ensemble de pièces comprenant un tel dispositif Download PDFInfo
- Publication number
- EP1067263A1 EP1067263A1 EP99202187A EP99202187A EP1067263A1 EP 1067263 A1 EP1067263 A1 EP 1067263A1 EP 99202187 A EP99202187 A EP 99202187A EP 99202187 A EP99202187 A EP 99202187A EP 1067263 A1 EP1067263 A1 EP 1067263A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- housing part
- theft deterrent
- retainer
- pin
- 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- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- -1 such as Pa Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/0054—Fraction or shear lines; Slip-clutches, resilient parts or the like for preventing damage when forced or slammed
Definitions
- the invention relates to a theft deterrent device according to the introductory portion of claim 1 and to a theft deterrent set of parts including such a theft deterrent device.
- EAS electronic article surveillance
- the strength of the connection between the closure member or disc and the housing part at the side of the housing opposite the connecting side is critical for the maximum pull-out force exerted onto the shank of the pin which the device can resist without mechanical failure.
- the device After mechanical failure of the connection between the disk and the housing part in which it is accommodated, the device is prone to complete failure, because pull out forces exerted onto the shank of the pin are then directly transmitted to the relatively thin housing part at the connecting side of the housing.
- This allows pulling forces exerted onto the shank to pull the housing parts apart or to flex and/or break the housing part at the connecting side of the housing.
- This allows the theft deterrent member, such as an electrical circuit to be removed from the housing, thereby effectively making the device inoperative. Therefore, the connection between the closure member or disc and the housing part at the side of the housing opposite the connecting side needs to be very strong. This also applies to the connection between the housing parts, which are typically welded together ultrasonically along their periphery to retain the electrical circuit between these two parts.
- this object is achieved by providing a theft deterrent device according to claim 1.
- the invention can also be embodied in a set of parts according to claim 10 which includes a theft deterrent device and a pin with a shank to be retained by the retainer.
- any pulling forces exerted onto a shank retained in the retainer results in the retainer being pressed against the second housing part on the side of that second housing part opposite the connecting side.
- the housing parts are effectively pressed together if pulling forces are exerted onto a shank retained by the retainer without relying on the transfer of pulling forces or shear forces via a connection between housing parts or between a housing part and a closure member for keeping the retainer in position. Removal of the theft deterrent member within the housing is thereby made very difficult while connections of the housing need not meet particularly high demands.
- the theft deterrent assembly as shown in the drawings includes a theft deterrent device 1 and an attachment device 2 including a pin 3 and a disk 4.
- the pin 3 has a shank 9 adapted for co-operation with a retainer 5 of the theft deterrent device 1.
- the theft deterrent device 1 further includes a housing 6 to be attached to an article to be protected in a space 7 between the housing 6 and the disk 4 of the attachment device 2. In attached condition, a connecting side of the housing 6 faces the article to be protected.
- the retainer 5 is adapted for retaining an end portion 8 of a shank 9 of the connecting pin 3 to be passed through the article to be protected.
- the housing 6 includes a first housing part 10 and a second housing part 11.
- the first housing part 10 is located on the connecting side of the housing 6 and the housing parts 10, 11 enclose a space 12 between these housing parts 10, 11 accommodating a theft deterrent member 13, in this example equipped with a ring-shaped antenna.
- the retainer 5 has a support surface 15 in contact with a support surface 16 of the housing 6.
- the theft deterrent device 1 and the attachment device 2 are initially separate from each other.
- the shank 9 of the pin 3 of the attachment member 2 is passed through the article to be protected - for instance through a textile part or through an eyelet or other opening of such an article - and inserted into the housing 6 via the opening 14 until it projects into the retainer 5, in which it is engaged by retainer members.
- the construction of retainers such as the retainer 5 is well known as such.
- an alarm is activated in response to the antenna 13 passing through a detection port, for instance at the entrance of a shop. If an article is to be brought out of the protected area, for instance because it has been sold to a customer, the theft deterrent device 1 is removed by operating the retainer 5 using a special magnetic device which causes the retainer 5 to release the shank 9 of the pin 3.
- a special magnetic device which causes the retainer 5 to release the shank 9 of the pin 3.
- Efforts to take an article out of the protected area without being authorised to do so typically include attempts to remove a theft deterrent device from the article or to at least remove the antenna of the theft deterrent device from the article. In the course of such attempts, typically the housing 6 and the disc 4 are pried apart with or without the use of a tool or it is attempted to open the housing 6 to gain access to the antenna 13.
- the support surface 16 against which the support surface 15 of the retainer 6 is mounted is part of the second housing part 11 and faces away from the first housing part 10, an unauthorised attempt to pry or pull the housing 6 and the disc 4 apart, merely results in the retainer 5 being pressed against the housing part 11 on the side facing away from the attachment member 2, thereby causing the parts 10, 11 of the housing 6 to be pushed against each other.
- the construction of the proposed device does not rely on a connection between the retainer 5 and the second housing part 11 to keep the retainer in place, but the retainer 5 is simply supported by the second housing part 11.
- an improved resistance of the theft deterrent device 1 against unauthorised removal is achieved by mounting the retainer 5 for retaining the shank 9 of the pin 3 to the outside of the housing 6 on the side facing away from the attachment member 2. Moreover, the retainer 5 reliably keeps the housing parts 10, 11 together, so that the combined flexural strength of housing parts 10, 11 has to be overcome to bend or break the housing 6. This in turn means that the individual housing parts 10, 11 can be of a relatively light design without sacrificing resistance against tampering.
- the retainer 5 By arranging the retainer 5 on the side of the second housing part 11 facing away from the first housing part 10 and by providing that the second housing part 11 has a passage 17 for passing the end portion 8 of the shank 9 of the pin 3 through the second housing part 11 and into the retainer 5, the retainer 5 contacts the second housing part 11 with a portion 15 closest to the connecting side of the housing 6.
- This avoids the need of high ribs of the housing parts 10, 11 extending parallel to the shank 9 of the pin 3.
- Such ribs would be prone to buckling and would therefore have to be of important dimensions to resist buckling.
- high ribs which would typically project in opening direction of a mould for forming the housing parts, would increase injection moulding cycle times and thereby manufacturing costs.
- the housing 6 includes a third housing part 18.
- the retainer 5 is enclosed between the second housing part 11 and the third housing part 18.
- This third housing part 18 shields the retainer 5, which is located outside the space 12 between the main housing parts 10, 11 against tampering.
- the third housing part 18 is connected to the first housing part 10 and the second housing part 11 is sandwiched between the first housing part 10 and the third housing part 18. Due to this constructional configuration, the third housing part 18 forms an additional reinforcement which effectively contributes to keeping the first housing part 10 and the second housing part 11 together and thereby increases the resistance of the housing 6 against unauthorised opening.
- the first housing part 10 and the second housing part 11 are held together by the third housing part in a particularly effective manner, because the area 20 where the third housing part 18 is connected to the first housing part 10 and the area 19 where the third housing part 18 contacts the second housing part 11 are located peripherally spaced from the retainer 5. Thus, the first housing part 10 and the second housing part 11 are also held together in an area more peripheral than the position of the retainer 5.
- the second housing part 11 is sandwiched particularly effectively between the third housing part 18 and the first housing part 10, because top ends of the support projections 24 of the first housing part 10 contact the second housing part 11 directly opposite the location where the third housing part 18 contacts the second housing part 11.
- the third housing part 18 is provided with snap fingers 21 which engage snap members 22 of the first housing part 10 when in mounted condition.
- the snap fingers 21 of the third housing part 18 project through openings 23 in the second housing part 11.
- the first housing part 10 is further provided with support projections 24 located in positions closely spaced from the snap members 22 of the first housing part 10.
- the snap members 22 of the first housing part 10 are of an inverted U-shaped design. Since the snap fingers 21 of the third housing part 18 project through the openings 23 in the second housing part 11, in mounted condition, the snap fingers 21 of the third housing part 18 are shielded from unauthorised attempts to release these snap fingers 21.
- the second housing part 11 is provided with lowered side portions 27 and a raised central portion 28. Such raised and lowered portions, which may also form a different pattern than the pattern as shown, counteract skewness and reduce the requirements regarding fairness of outer surface of the second housing part 11 for obtaining a visually appealing appearance.
- the first housing part 10 and the second housing part 11 are connected to each other by a snap connection 25 as well.
- the advantage that the connections between the housing parts 10, 11 need not fulfil particularly high requirements is used to provide connections which can be made easily and quickly without any special tools. This substantially reduces the manufacturing costs of the proposed theft deterrent device 1.
- Tearing the first housing part 10 and the second housing part 11 apart is made even more difficult, because the housing 6 of the theft deterrent device 1 and the disk shaped part 4 - which parts are disposed in essentially coaxial positions when the pin 3 is attached to the housing 6 - have essentially identical contours. This makes it very difficult to grip either the second housing part 11 or the disk 4 for tearing these parts apart.
- Introduction of a prying instrument between the housing parts 10, 11 is made more difficult because the disk and a portion of the garment to be protected against theft cover the peripheral seam between the housing parts 10, 11. Access to this seam is thereby made difficult. Efforts to forcefully gain access to this seam will generally cause damage to the protected garment making it virtually worthless and thus unattractive to those intending to steal it.
- a disk shaped portion with identical contours as the housing 6 and in line with the housing 6 is particularly advantageous in connection with housing parts 10, 11 which are held together by the pin 3 and the retainer 5 for protecting a relatively weak connection along the peripheral edge of the housing 6.
- having an attachment member 2 with a disk shaped portion 4 with identical contours as the housing 6 and in line with the housing 6 is also advantageous for counteracting tampering with a housing of a theft deterrent device of which the housing parts are connected to each other by another connection, such as an ultrasonically welded connection.
- both the housing 6 of the theft deterrent device 1 and the disk 4 of the attachment member 2 have circular contours coaxial with the shank 9 of the pin 3. Due to these features rotation of the housing 6 and of the disk 4 relative to each other about the axis of the shank 9 of the pin 3 does not cause one of these parts to project relative to the other which would allow to exert substantial forces to these parts 4, 6 tearing or prying these parts apart from each other.
- Prying the housing parts 10, 11 apart is further counteracted by the provision of a sharp outer edge 30 of the first housing part 10.
- Tools entered into the slit 7 between the theft deterrent device 1 and the attachment member 2 are deflected past the sharp edge 30 and the bevelled peripheral surface 29 contiguous with that sharp edge 30.
- a particular advantage of the low structural requirements the connections have to meet is, that the step of welding of the parts 10, 11, 18 to each other is not necessary so that no welding apparatus is necessary.
- Another advantage of dispensing with the welding step is, that the housing parts 10, 11 can be made of material which is not weldable ultrasonically or even not weldable at all. This provides the possibility of using for instance other, lower cost and higher modulus and strength plastic materials, such as Pa, PC, PPO and ABS in non-flammable versions.
- a particular advantage of the ability to use non-weldable plastics is, that plastics can be used which have a better resistance against heat and fire. Softening, melting or burning are a methods which are often used in attempts to remove or open theft deterrent devices.
- the pin 3 has a head 31 of which peripheral portions are enclosed in a cage portion 32 of the disk 4 by clicking cams 34.
- the disk 4 is weakened closely around the cage portion 32 along a line 33. This provides the advantage that even if the disk 4 is broken, the periphery of the head 31 of the pin 3 and the shank of the pin 3 are not exposed, so that it is still difficult to insert a prying tool between the theft deterrent device 1 and the (remainder of) attachment member 2 - in particular without damaging the article to be protected -, to exert large pulling forces onto the (remainder of) the attachment member 2 and to cut off the pin 3 at the shank 9.
- the leftovers of the broken disk 4 still help to prevent the theft deterrent device 1 from being removed from the article to be protected.
- the head 31 of the pin could for instance pass through a small slit, but the remainders of the disk require a larger hole to be passed through.
- the broken edges will typically be sharp and easily damage the article.
- the theft deterrent member 13 surrounds a passage 26 through which the shank 9 of the pin 3 extends. This makes removal of the theft deterrent member 13 from the housing more difficult. This is of particular advantage in situations in which the housing 13 has been damaged and the theft deterrent member would otherwise be removable from the housing 6.
- connections can for instance be of another type, for instance including locking members to be inserted after assembly which can not be reached after having been mounted or include more conventional fasteners, which are preferably not releasable.
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99202187A EP1067263A1 (fr) | 1999-07-05 | 1999-07-05 | Dispositif antivol et ensemble de pièces comprenant un tel dispositif |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99202187A EP1067263A1 (fr) | 1999-07-05 | 1999-07-05 | Dispositif antivol et ensemble de pièces comprenant un tel dispositif |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1067263A1 true EP1067263A1 (fr) | 2001-01-10 |
Family
ID=8240411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99202187A Withdrawn EP1067263A1 (fr) | 1999-07-05 | 1999-07-05 | Dispositif antivol et ensemble de pièces comprenant un tel dispositif |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1067263A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2166416A1 (de) * | 1966-12-07 | 1974-03-14 | Knogo Corp | Schildbefestigungsanordnung |
| EP0329229A1 (fr) * | 1988-02-15 | 1989-08-23 | Id Systems Productie B.V. | Attache antivol |
| US4903383A (en) | 1988-03-11 | 1990-02-27 | Id Systems International Bv | Anti-theft fastening |
| EP0434425A1 (fr) * | 1989-12-21 | 1991-06-26 | Esselte Meto International GmbH | Fixation d'une étiquette de sécurité |
| US5077872A (en) * | 1990-08-10 | 1992-01-07 | Antonson Security Denmark A/S | Antitheft device |
-
1999
- 1999-07-05 EP EP99202187A patent/EP1067263A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2166416A1 (de) * | 1966-12-07 | 1974-03-14 | Knogo Corp | Schildbefestigungsanordnung |
| EP0329229A1 (fr) * | 1988-02-15 | 1989-08-23 | Id Systems Productie B.V. | Attache antivol |
| US4903383A (en) | 1988-03-11 | 1990-02-27 | Id Systems International Bv | Anti-theft fastening |
| EP0434425A1 (fr) * | 1989-12-21 | 1991-06-26 | Esselte Meto International GmbH | Fixation d'une étiquette de sécurité |
| US5077872A (en) * | 1990-08-10 | 1992-01-07 | Antonson Security Denmark A/S | Antitheft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
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| 17P | Request for examination filed |
Effective date: 20010710 |
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| AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20040203 |