Abstract:
An anti-theft device for articles or items with at least one anchoring structure. This device comprises an anti-theft magnetic tag comprising the means for connection to the said anchoring structure. These connection means comprises, on the one hand, clamping means intended to cooperate with the locking device of the magnetic tag and clamp to the latter, and, on the other hand, means for latching the clamping means-magnetic tab assembly onto the anchoring structure of the object or item to be protected against theft.

Description:
FIELD OF THE INVENTION 
     The present invention relates to theft prevention, notably prevention of larceny perpetrated in stores, for example in large supermarkets. The invention relates more specifically to an anti-theft device for articles with at least one anchoring structure. 
     BACKGROUND OF THE INVENTION 
     Until now, theft prevention, particularly in large supermarkets, has involved the use of anti-theft devices comprising magnetic tags fixed by a locking button on the article to be protected by a locking button. These devices of the prior art can only be used when the article can be penetrated by the locking device of the tag, which advantageously comprises a locking button with a central clamping point. In practical terms, this reduces the use of these devices to textiles and other off-the-peg clothes. Until now, nothing has been developed for the prevention of theft of other articles. 
     SUMMARY OF THE INVENTION 
     The aim of the invention is to remedy this state of affairs by providing an anti-theft device suitable for any article or item provided that it has at least one anchoring structure. 
     Another aim of the invention is to provide an anti-theft device of the said type which is suitable for the type of magnetic tag usually employed for avoiding theft. 
     A further aim of the invention is to provide an anti-theft device for articles or items with an anchoring structure, a device of simple design which is easy to fit onto the magnetic tags of the prior art. 
     The present invention relates to an anti-theft device for articles or items with at least one anchoring structure, this device comprising an anti-theft magnetic tag and being characterized in that it comprises means for fitting the magnetic tag to the anchoring structure, these fitting means comprising, on the one hand, clamping means which cooperate with the locking device of the magnetic tag and clamp to the magnetic tag, and, on the other hand, means for latching the clamping means-magnetic tag assembly onto the anchoring structure of the article or item to be protected. 
     The anti-theft device according to the invention is, moreover, distinguished by the following points: 
     the clamping means comprise a sliding member the shape of which closely fits that of the magnetic tag, this sliding member being fitted on its upper face, at one of its ends, with a first flexible clip cooperating at its free end with the locking device of the tag, and, at the other end, a second flexible clip with abutment means at its free end, this second clip presenting in the longitudinal direction an oblong port able to superimpose on a port of corresponding shape provided in the underlying support member which is joined or otherwise to the body of the magnetic tag; 
     the support member is a plate in the form of a U-bar the flanges of which are supported on the tag and fit into a housing of corresponding shape provided in the tag; 
     the support member presents an upper boss centered axially with the oblong port and intended, once the device is assembled, to fit into the port of corresponding shape provided in the upper face of the sliding member; 
     the latching means comprise a clip with an opening of the free edges from which extend two opposed anchoring clips, advantageously aligned and intended to be introduced into the two oblong ports of the sliding member and of the support member, these clips having, for example, the shape of a collar or of a split ring. 
     According to one variant of the embodiment of the anti-theft device of the invention, the clamping means comprise a flexible tongue fitted at one end with a flexible clip cooperating with the locking device of the tag and at the other end a second flexible clip, the tongue presenting moreover between its two ends an internal boss abutting the underlying support member. The second clip abuts the locking means and is intended to force the said locking means to assume a locking position against the action of the elastic means housed in a part supporting the latching means. 
     This variant of the embodiment of the anti-theft device according to the invention is, moreover, distinguished by the following points: 
     the support member is a tag comprising a central housing for the insertion of the flexible tongue; 
     the clamping means comprise a piston with an upper edge or sharpened structure delimited by a peripheral notch; 
     the elastic means comprise a spring housed inside the piston. 
     the latching means comprise an adjustable collar in the form of clip one end of which is fixed to the support member and passes through the said member to form a loop; 
     the adjustable collar comprises an outer threaded structure cooperating with the sharp edge of the piston, which is pushed between two neighboring turns of the thread when the device is locked. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Further advantages and characteristics of the invention will become apparent upon reading the following description of a non-limiting form of the anti-theft device with reference to the appended diagrams in which: 
     FIG. 1 is an exploded perspective view of the various components of the anti-theft device of the invention; 
     FIG. 2 is the support member viewed from above; 
     FIG. 3 is the sliding member viewed from above; 
     FIG. 4 is a perspective view of the anti-theft device of the invention mounted in locked position on a bottle; 
     FIG. 5 is the variant of the embodiment of the anti-theft device of the invention viewed from above; 
     FIG. 6 is a view of a longitudinal axial section along line VI--VI of FIG. 5. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With particular reference to FIG. 1, it can be seen that the anti-theft device of the invention comprises a magnetic anti-theft tag 1, its locking button 2 provided with a clamping point 2a and mounted on a sliding member 3, a support member 4 and a latching member 5. 
     The tag 1 has on its upper face a first housing 1a at the opposite end from the locking end of the tag, a median housing 1b intended to receive the support member 4 and an end shoulder 1c with a hole 1d intended to receive the clamping point 2a. 
     The sliding member 3 has two angled parts or guide flanges 3a, an upper base 3b centrally cut so as to accommodate a flexible clip 3c at the free end of which is mounted a locking button 2 of the tag 1. This clip 3c has an axial rectangular port 3d. The upper base 3b of the sliding member 3 is extended by a second mobile clip 3e with an axial oblong port 3f, a clip forming a back stop 3g being provided at the extreme end of this flexible clip 3e. 
     The support member 4 is in the shape of a U-bar whose flanges 4a are intended to rest against the bottom of the housing 1b of the tag. This member 4 has a transversal oblong port 4b of the same configuration as the oblong port 3f in the clip 3e of sliding member 3, these ports being superimposed when the anti-theft device is assembled. In the upper base of the support member 4 is also a boss transversally aligned with the oblong port 4b, this boss preferably being in the form of a semi-cylinder 4c. 
     The latching member has the form of a split ring 5 from which angled clips 5a, 5b project. FIGS. 2 and 3 show in particular the sliding member 3 and the support member 4 viewed from above. 
     With particular reference to FIG. 4, a description will now be given of the attachment of the anti-theft device of the invention, which is especially suitable for a recipient with a neck, to a bottle. 
     The latching member 5 is especially adapted to fit closely the shape of the neck G of the bottle below the upper enlarged part of the latter shown by the dashed lines in FIG. 4. The latching member 5 must in fact fit the shape of the neck as closely as possible at the narrowest point of the neck. 
     The support member 4 fits in its housing 1b in the magnetic tag 1, so that the flanges 4a abut the transverse walls of housing 1b. Sliding member 3 is then displaced so that port 3f superimposes port 4b of support member 4, member 3 abutting boss 4c. The angled clips 5a, 5b, of latching member 5 are then introduced by the said ports until the ends of the clips 5a, 5b open out under member 4a, after which latching member 5 is rotated approximately 90° and sliding member 3 is moved so as to trap clips 5a, 5b of ring 5 in ports 3f, 4b as a result of translatory motion imparted to sliding member 3 with respect to member 4, and so as to position point 2a of locking button 2 opposite its housing 1d in shoulder 1c of magnetic tab 1, the back stop 3g then being supported in housing 1a. Then the device is locked by pressure on button 2, thus trapping latching member 5, which latches the anti-theft device to the bottle to be protected until removed by releasing button 2 with the help of a suitable tool. Once button 2 is released, it is enough to push tongue 2a upwards in order to release it from boss 4c, and also to push tongue 3e upwards so as to release boss 3g from its support housing 1a. The client can then leave with his/her bottle having duly paid for it at the till. 
     In the form of the embodiment above, the latching member, support member and the sliding member are of materials of mechanical strength suitable for the purpose. Materials of the following types, could, for example, be used: plastic, iron, steel and various other alloys. 
     With special reference to FIG. 5 and 6, it can be seen that a variant of the anti-theft device comprises a magnetic anti-theft tag having a locking button 102 provided with a clamping point 102a and mounted on a flexible plate 103. 
     Member 101 has on its upper face a support area 101a intended to receive the support member 104 and an end shoulder 101c with a hole 101d intended for reception of the clamping point 102a. The flexible plate 103 has a boss 103a pressing against zone 101a and is extended by a shoulder 103b abutting against the head of a hollow piston 106 inside body 106a from which is fitted a spring 107, which is mounted sliding in the cavity 108b of an insert 108 joined to member 101 by means of a holding part 109. Plate 103 is provided at its end with a flexible clip 103c at the free end of which is mounted the locking button 102 of member 101. Piston 106 has an upper peripheral groove defining with the corresponding edge a sharpened rim 106c. 
     The holding part 109 is fixed to member 101 and joins the insert 108 and the support member 104 to the said member 101. For this purpose part 109 has a peripheral flange 109b which is supported by a peripheral shoulder 108a of the support part 108, which is itself supported on member 104, as well as upper 109a, lateral 109c, 109d and lower 109e holding zones on member 101. 
     The latching device is in the form of a collar 5 fixed at one end to part 108 and whose other end is connected to a ball or pull knob 105c by means of a fixing body 105d. The collar 105 comprises a core 105a enclosed by a threaded structure 105b. Part 108 is pierced by an oblique transversal port 108c which communicates with the cavity 108b of the said part 108 and is intended to receive the latching member so as to form an adjustable loop. 
     Collar 105 is especially adapted to fit closely the shape of the neck of a bottle or container below the upper enlarged part of the said neck. The collar 105, because of its design in the form of a loop, can be fitted as closely as possible around the narrowest part of the neck. After positioning of collar 105, the device is locked by pressure on button 102, the elastic reaction at the shoulder 103b, by means of boss 103a, acting on piston 106 against the action of spring 107, thus allowing the sharpened structure 106c to lock the collar 105 by insertion between two adjacent turns of the threaded structure 105b, which means that the collar 105 which latches the anti-theft device to the bottle to be protected is trapped until sale of the bottle, in which case button 102 is released with the help of a suitable tool. The client can then leave with his/her container or bottle having duly paid for it at the till. 
     In this variant of the embodiment of the anti-theft device according to the present invention, the components can be of various materials provided that they have mechanical strength properties suitable for the purpose. Various types of material can be used, for example: plastic, iron, steel and various other alloys. 
     It is clear that the invention is in no way limited to the form of the embodiment described above, adapted in particular to theft prevention for containers with necks, but that it covers all modifications and variants of the same basic principle. 
     In this way, the collar 5 may have any shape provided that it closely fits the appropriate zone of the anchoring structure. Similarly, while the support structure has been presented in the form of a support member 4, it could equally be joined to tag 1, for example by molding with the latter. Furthermore, button 2 and its locking nail 2a may also be manufactured with sliding member 3. 
     Similarly, while the support structure has been presented in the form of a plate 104, it could equally be joined to plate 101, for example by molding with the latter. Furthermore, button 102 and its locking nail 102a may also be manufactured with the tongue 103. 
     Thus, according to the present invention, a solution is provided to the problem of theft protection for items that do not allow anchoring of the usual magnetic tags, but which have an anchoring structure suitable for receiving the anti-theft device of the present invention.