CN102360698B - Magnetic detacher provided with open access - Google Patents
Magnetic detacher provided with open access Download PDFInfo
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- CN102360698B CN102360698B CN201110235133.3A CN201110235133A CN102360698B CN 102360698 B CN102360698 B CN 102360698B CN 201110235133 A CN201110235133 A CN 201110235133A CN 102360698 B CN102360698 B CN 102360698B
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- magnet
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- detacher
- toroidal
- magnetic field
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Abstract
The invention relates to a magnetic detacher provided with an open access. In the invention, each embodiment of the magnetic detacher provided with the open access is described. In one embodiment, the magnetic detacher comprises a magnetic subassembly and the magnetic subassembly is used for providing the open access for a hard label and providing a magnetic field which is enough to be separated from a clamping device of the hard label.
Description
The application be application people for Sensormatic Electronics Corp, international filing date be that December 1, international application no in 2005 are the divisional application of the application for a patent for invention that PCT/US2005/043958, national applications number are 200580052476.9, denomination of invention is " having the magnetic detacher of open visit ".
Background technology
Electronic article surveillance (EAS) system is designed to prevent without permission from controlled area mobile article.Typical EAS system can comprise supervisory control system and one or more safety label.Described supervisory control system can be set up interrogation in the accessing points of described controlled area.Safety label can be secured on the article such as clothes commodity.If add that the article of label enter interrogation, may trigger alarm, shift out without permission the article with label for representing from described controlled area.Generally, can leave controlled area and before not triggering alarm, must make safety label invalid at the article with label.
Safety label can adopt various ways, comprising soft label and hard label.Usually, soft label is disposable, only used once, and hard label can be reused.A label that example is back side viscosity of soft label.Soft label can be made such as the invalid unit of scanner invalid (deactivate), and described scanner makes described soft label invalid when its contact or while approaching described soft label with specific magnetic field.
Hard label generally includes: plastic label main body, and it has held EAS transducer; And locking device, comprises pin or tack, its by article and folder to described tag body so that article and label are tightened together.Generally, hard label needs detacher unit to remove tack from tag body, and described article can be separated with hard label.In some applications, detacher unit can comprise magnet assembly, and it applies magnetic field to discharge described tack to tag body.
Fig. 1 illustrates traditional hard label 10, and it has plastic label main body 11, and plastic label main body 11 is formed with jut 12.Described tag body 11 is held EAS transducer 13, and it is for triggering alarm.Described hard label 10 comprises the tack 14 of the head 15 with expansion.As shown in the figure, tack 14 is fastened in tag body 11 by clamping device 16.
Fig. 2 illustrates the traditional magnetic assembly 20 of detacher unit.Magnet assembly 20 comprises cylindrical magnet 21 and magnetized toroidal magnet 22 on the contrary, and toroidal magnet 22 is stacked on the top of cylindrical magnet 21.As shown in the figure, magnet assembly 20 comprises that the degree of depth is roughly the cavity 23 of 6-7 millimeter.This configuration is suitable for well for the traditional hard label such as hard label 10, and wherein, the cavity 23 of magnet assembly 20 is compatible with the jut 12 of tag body 11.In order to allow to take out tack 14, jut 12 is inserted in cavity 23, in order to the high-intensity magnetic field being used in toroidal magnet 22.Magnet assembly 20 provides in cavity 23 is enough to the substantially vertical magnetic field of forcing clamping device 16 to depart from and allowing to take out from tag body 11 tack 14.
Tagging in application such as bottle and CD tagged many, for example, the clamping device of hard label can be embedded in the existing packaging of article, or can have little profile to minimize the possibility of inefficacy, and the placement of item of convenience.For such application and guarantee requirement, need different stripping attachment designs that the open visit for the clamping device of described embedding or little profile is provided, and simultaneously, provide enough magnetic field.
Brief description of the drawings
Fig. 1 illustrates traditional hard label.
Fig. 2 illustrates the traditional magnetic assembly of detacher unit.
Fig. 3 illustrates according to the magnetic detacher of an embodiment.
Fig. 4 illustrates according to the magnetic detacher of an embodiment.
Fig. 5 illustrates according to the magnetic detacher of an embodiment.
Fig. 6 illustrates according to the figure of an embodiment.
Fig. 7 illustrates according to the figure of an embodiment.
Embodiment
Can provide multiple details at this and understand up hill and dale embodiments of the invention.But those skilled in the art can understand, can put into practice embodiments of the invention in the situation that there is no these details.In addition, do not describe known method, process, parts and circuit in detail, to do not obscure embodiments of the invention.Be appreciated that concrete structure disclosed herein and function detail can be representational, and must do not limit scope of the present invention.
It should be noted that any the quoting for " embodiment " represents that special characteristic, structure or the characteristic described in conjunction with described embodiment are included at least one embodiment in specification.The same embodiment of the inevitable all instructions of the appearance of phrase " in an embodiment " everywhere in specification.
Fig. 3 illustrates an embodiment of magnetic detacher 30.In this embodiment, magnetic detacher 30 comprises magnet assembly 31, and it comprises cylindrical magnet 32 and toroidal magnet 33.In various implementations, cylindrical magnet 32 and toroidal magnet 33 can comprise one or more permanent magnets.Usually, permanent magnet has the magnetized axis of the restriction of orientation, geometry and the other materials attribute of the magnetization process of depending on, material.
In various embodiment, permanent magnet can comprise such as the paramagnetic parts of samarium (Sm) and neodymium (Nd) with such as the ferromagnetic parts of iron and cobalt (Co).During the making of permanent magnet, can set up domain structure, magnetization in the domain of its display orientation, this is called as magneto-crystalline anisotropy, is the mechanism that produces high-intensity magnetic field.Permanent magnet can be processed, and described processing comprises the compression of for example parts in the time there is surrounding magnetic field, sintering and the remagnetize of compression material.
The example of permanent magnet includes, but are not limited to neodymium iron boron (NdFeB) magnet, hard ferrite magnet and cobalt magnet, and described cobalt magnet is such as being SmCo (SmCo) magnet and aluminium nickel cobalt (AlNiCo) magnet.Permanent magnet can comprise magnet sintering and/or bonding.Described permanent magnet also can comprise that multiple coating is to stop corrosion.
In each embodiment, magnetic detacher 30 is structured and arranges to various magnetic clamping devices provides the access of opening.Therefore, magnetic detacher 30 can depart from the clamping structure being positioned at respect to the hard label of any angle position of its axle.In various implementations, magnetic detacher 30 is configured to the magnetic field that provides comparatively symmetrical around its axle, makes it be used in the hard label of any angle position.
In the embodiment shown in Fig. 3, for example, the upper surface 34 of cylindrical magnet 32 is roughly coplanar and concentric with the upper surface of toroidal magnet 33.As shown in the figure, cylindrical magnet 32 and toroidal magnet 33 are substantially flush, allow to receive in any direction hard label.Therefore magnetic detacher 30 provides open visit to the various magnetic clamping devices in hard label.Described embodiment is not limited in this context.
In some embodiment, the upper surface of cylindrical magnet 32 can upwards or downwards slightly be offset from the upper surface of toroidal magnet 33 35.For example, the upper surface 34 of cylindrical magnet 32 can be from the upper surface of toroidal magnet 33 35 upwards or offset downward 2-3 millimeter.Described embodiment is not limited in this context.
In various embodiment, magnet assembly 31 comprises toroidal magnet 33, and it is magnetized diametrically.Toroidal magnet 33 can comprise for example multiple part 36-1-n, and wherein, n represents positive integer value, and is magnetized in each direction pointing to toroidal magnet 33 center of multiple part 36-1-n.In the embodiment shown in Fig. 3, for example, toroidal magnet 33 is divided into Part I 36-1, Part II 36-2, Part III 36-3 and Part IV 36-4 by four.In Fig. 3, white arrow represents magnetized direction.In this embodiment, for the first half of toroidal magnet 33, magnetic flux inwardly points to toroidal magnet 33 center, and is bent upwards out outside toroidal magnet 33.The magnetic field of toroidal magnet 33 is added to the magnetic field of the upper finger being produced by core cylinder magnet 32, produces very strong magnetic field.
In some embodiment, the direction of magnetization shown in Fig. 3 can be reversed.For example, core cylinder magnet 32 can produce the magnetic field of lower finger, and toroidal magnet 33 can outwards guide magnetic flux from toroidal magnet 33 center.
In various implementations, magnet assembly 31 provides the relatively symmetrical magnetic field around its axle, makes magnetic detacher 30 can be used for being positioned at the hard label of any angle position.In some embodiment, soft iron material can be placed in the bottom of magnet assembly 31, to obtain keeper effect, and strengthens Surface field.
In each embodiment, toroidal magnet 33 can be divided into four or more part, and each magnetic part is magnetized in the direction of pointing to toroidal magnet 33 center.Be appreciated that toroidal magnet 33 can have sizable changes of magnetic field in the case of the part that is less than four, therefore clamping device only can depart from specific angle position.
Fig. 4 illustrates an embodiment of magnetic detacher 40.In this embodiment, magnetic detacher 40 comprises magnet assembly 41, and it comprises cylindrical magnet 42 and semi-ring magnet 43.In various implementations, cylindrical magnet 42 and semi-ring magnet 43 can comprise one or more permanent magnets.
In each embodiment, magnetic detacher 40 is structured and arranges from the various magnetic clamping devices of a side direction of magnet assembly 41 provides open access.Therefore, magnetic detacher 40 can depart from the clamping structure being located at respect to the hard label of the various angle positions of a side of magnet assembly 41.Generally, the height (for example 12 millimeters) of semi-ring magnet 43 will be greater than the height (for example 7 millimeters) of toroidal magnet 22 of magnet assembly 20, with the various clamping devices that provide enough magnetic field to depart from hard label, a side of magnetropism assembly 41 provides open access simultaneously.Described embodiment is not limited in this context.
Fig. 5 illustrates an embodiment of magnetic detacher 50, and in the present embodiment, magnetic detacher 50 comprises magnet assembly 51, and it comprises the first rectangular magnet 52, the second rectangular magnet 53 and the 3rd rectangular magnet 54.In various implementations, the first rectangular magnet 52, the second rectangular magnet 53 and the 3rd rectangular magnet 54 can comprise one or more permanent magnets.In some embodiment, magnetic detacher 50 can comprise one or more other rectangular magnet.
In each embodiment, magnetic detacher 50 is structured and arranges to various magnetic clamping devices provides the access of opening.In the embodiment shown in Fig. 5, for example, the upper surface 55 of the first rectangular magnet 52, the upper surface 56 of the second rectangular magnet 53 and the upper surface 57 of the 3rd rectangular magnet 54 are roughly coplanar.As shown in the figure, the first rectangular magnet 52, the second rectangular magnet 53 and the 3rd rectangular magnet 54 are substantially flush, allow to hold in any direction hard label.Therefore magnetic detacher 50 provides to the various magnetic clamping devices in hard label the access of opening.Be appreciated that due to asymmetric, the magnet with rectangular geometry trends towards producing the magnetic field more weak than the magnet with circular geometry, and does not have the symmetry in orientation.Described embodiment is not limited in this context.
Table 1 illustrates the comparison at the Surface field in kilogauss (kG) at the cylindrical magnet Shang center of various magnetic detacher configurations.Described configuration can comprise toroidal magnet, and it has internal diameter (ID), external diameter (OD) and height (h).
Table 1
As shown at table 1, use the only stripping attachment configuration of single cylindrical magnet to provide than the lower Surface field of stripping attachment configuration that uses magnet assembly.Using single configurations of magnets to realize open visit need to be removed toroidal magnet 22 and only be used for example cylindrical magnet by the magnet assembly 20 from magnet.Such means dismounting magnetic field of having compromised, because clamping device must be designed to be opened by weak magnet, therefore clamping device is caught to be easier to lose efficacy by " outside (street) " magnet.
Also as shown in table 1, can in the case of suitably having selected to be placed in the size of the toroidal magnet in cylindrical magnet, realize and configure by the traditional stripping attachment that uses the toroidal magnet in cylindrical magnet the similar magnetic field, magnetic field providing.The stripping attachment of the toroidal magnet that therefore, use flushes with cylindrical magnet is configured in the access of opening and enough magnetic field is provided while suitably having selected magnet size.For example, the height of toroidal magnet (for example toroidal magnet 33) can be brought up to 12 millimeters, or, external diameter can be brought up to and be greater than 60 millimeters to obtain the magnetic field levels that is greater than 7.1kG for such stripping attachment configuration.In addition, use has the stripping attachment configuration with the semi-circular magnet that is greater than 12 millimeters of height superposeing in cylindrical magnet also can provide enough magnetic field, allows from the open visit of a side of described magnet assembly simultaneously.Described embodiment is not limited to this context.
Fig. 6 illustrates an embodiment of curve Figure 60, and described curve Figure 60 illustrates the magnetic field levels as the function of the height that uses the various magnetic stripping attachments of the toroidal magnet flushing with cylindrical magnet to configure.As shown in the figure, it is possible using larger magnet further to strengthen magnetic field.Described embodiment is not limited to this context.
Fig. 7 illustrates an embodiment of curve Figure 70, and described Figure 70 illustrates the magnetic field levels as the function of the distance at the center of magnetic surface.As shown in the figure, each embodiment of described magnetic detacher compares with the magnet assembly of magnet and has strengthened magnetic field projection (field projection).In such embodiment, to compare with the magnet assembly of magnet, described magnetic detacher has longer magnetic field projection, allows magnetic detacher to depart from the clamping device of hard label with larger distance.Described embodiment is not limited to this context.
Above-mentioned discussion and the magnetic field value NdFeB magnet based on using level 35.If the magnet of the higher level of the NdFeB magnet of use such as level 50, magnetic field levels will improve 10-15% conventionally.Described embodiment is not limited to this context.
In various implementations, described embodiment comprises: magnetic detacher, for the access of opening is provided to various hard labels; And enough strong magnetic field levels, for departing from the clamping device of such hard label.Described embodiment can be for tagging in application such as the multiple of bottle and CD, wherein, the clamping device of hard label can be embedded in the existing packaging of article, or can have little profile to minimize the possibility of inefficacy, and the placement of item of convenience.
In various implementations, described embodiment has avoided in the multiple application that tags such as bottle and CD, using large profile or outstanding design.Use at the very thin outstanding clip of loading onto of the packaging such as CD, jewel box or glasses often has problem, because outstanding clip easily snaps or is subject to other infringement.The use of outstanding clip has also hindered effective use and has shelved space, because jut has taken space, and makes to be difficult to stack or arrange commodity.
In various implementations, described embodiment comprises the magnetic detacher that uses magnet assembly, and described magnetic detacher provides than using the higher magnetic field levels of stripping attachment configuration of single magnet.Such embodiment has avoided being designed for the demand compared with the clamping device of the hard label of weak magnet, described compared with weak magnet will reduce for invalid antagonism.
Although the special characteristic of embodiment as described in having illustrated as said, now for those skilled in the art, can carry out many amendments, substitutes, change and equivalent.Therefore, it should be understood that appended claim is intended to contain all such amendment and the change in the true spirit that falls into described embodiment.
Claims (18)
1. a magnetic detacher, comprising:
Magnet assembly, for comprising that from a side direction of described magnet assembly the hard label of clamping device provides open access path, and for provide the magnetic field that is enough to the described clamping device that departs from described hard label in the time that described hard label is placed with multiple angles position with respect to a side of described magnet assembly, described magnet assembly comprises:
Cylindrical magnet; And
Semi-circular magnet, overlays in described cylindrical magnet in concentric arrangement mode, and wherein said semi-circular magnet has the height dimension for the magnetic field that is enough to the described clamping device that departs from described hard label is provided.
2. according to the magnetic detacher of claim 1, wherein, described magnet assembly comprises permanent magnet.
3. according to the magnetic detacher of claim 2, wherein, described permanent magnet comprises following at least one: NdFeB magnet, hard ferrite magnet, SmCo magnet and AlNiCo magnet.
4. according to the magnetic detacher of claim 1, wherein, described semi-circular magnet comprises the height dimension that is greater than or equal to 12 millimeters.
5. a magnetic detacher, comprising:
Magnet assembly, for the access path of opening is provided to the hard label that comprises clamping device, and for the magnetic field that is enough to the described clamping device that departs from described hard label is provided, described magnet assembly comprises:
Toroidal magnet, wherein said toroidal magnet is radially magnetized and is comprised multiple parts, and wherein said toroidal magnet has height dimension or outside dimension for the magnetic field that is enough to the described clamping device that departs from described hard label is provided; And
Cylindrical magnet, be attached to described annular magnet, and form core in the inside of described toroidal magnet, and described cylindrical magnet and described toroidal magnet are installed in the mode of concentric arrangement, and wherein said cylindrical magnet has the upper surface with respect to the upper surface skew of described toroidal magnet.
6. according to the magnetic detacher of claim 5, wherein, the described upper surface of described cylindrical magnet shifts into lower than the described upper surface of described toroidal magnet and is less than 3 millimeters.
7. according to the magnetic detacher of claim 5, wherein, the described upper surface of described toroidal magnet shifts into the described upper surface higher than described cylindrical magnet.
8. according to the magnetic detacher of claim 5, wherein, each part of described multiple parts is magnetized in the direction at center of pointing to described toroidal magnet.
9. according to the magnetic detacher of claim 5, wherein said toroidal magnet comprises four or more parts.
10. according to the magnetic detacher of claim 5, wherein, the magnetic flux being produced by described toroidal magnet is inwardly guided by the center to described toroidal magnet, and is bent upwards out described toroidal magnet.
11. according to the magnetic detacher of claim 5, and wherein, the magnetic field being produced by described toroidal magnet is added to the magnetic field of the vertical sensing being produced by described cylindrical magnet.
12. according to the magnetic detacher of claim 5, and wherein, described magnet assembly provides the radial magnetic field relatively symmetrical around the axle of described magnet assembly.
13. according to the magnetic detacher of claim 5, also comprises the soft iron material of the bottom that is positioned at described magnet assembly, for strengthening magnetic field.
14. according to the magnetic detacher of claim 5, and wherein, described magnet assembly comprises permanent magnet.
15. according to the magnetic detacher of claim 14, and wherein, described permanent magnet comprises following at least one: NdFeB magnet, hard ferrite magnet, SmCo magnet and AlNiCo magnet.
16. according to the magnetic detacher of claim 5, and wherein, described toroidal magnet comprises the height dimension that is greater than or equal to 10 millimeters.
17. according to the magnetic detacher of claim 5, and wherein, described toroidal magnet comprises the outside dimension that is greater than or equal to 44 millimeters.
18. according to the magnetic detacher of claim 5, and wherein, described magnet assembly provides the magnetic field projection of enhancing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110235133.3A CN102360698B (en) | 2005-12-01 | 2005-12-01 | Magnetic detacher provided with open access |
| HK12103754.6A HK1163340A1 (en) | 2005-12-01 | 2012-04-17 | Magnetic detacher with open access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110235133.3A CN102360698B (en) | 2005-12-01 | 2005-12-01 | Magnetic detacher provided with open access |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580052476.9A Division CN101356331B (en) | 2005-12-01 | 2005-12-01 | Magnetic detacher with open visit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102360698A CN102360698A (en) | 2012-02-22 |
| CN102360698B true CN102360698B (en) | 2014-11-12 |
Family
ID=45585996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110235133.3A Active CN102360698B (en) | 2005-12-01 | 2005-12-01 | Magnetic detacher provided with open access |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102360698B (en) |
| HK (1) | HK1163340A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050018B (en) * | 2016-08-01 | 2018-03-16 | 盐城工业职业技术学院 | Solarization is locked |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063934A (en) * | 1987-10-07 | 1991-11-12 | Advanced Techtronics, Inc. | Permanent magnet arrangement |
| US6084498A (en) * | 1998-08-21 | 2000-07-04 | Dexter Magnetic Technologies, Inc. | Magnetic decoupler |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339853A (en) * | 1980-03-04 | 1982-07-20 | Permag Corporation | Magnetic decoupler |
| US4527310A (en) * | 1983-07-22 | 1985-07-09 | I. D. Engineering, Inc. | Secure release apparatus for anti-theft fastening device |
| ATE230494T1 (en) * | 1995-11-14 | 2003-01-15 | Maurer Albert | RELEASE MAGNET FOR THEFT DETECTION OF SALES ITEMS |
| US6011474A (en) * | 1998-04-28 | 2000-01-04 | Sensormatic Electronics Corporation | Multiple-use deactivation device for electronic article surveillance markers |
-
2005
- 2005-12-01 CN CN201110235133.3A patent/CN102360698B/en active Active
-
2012
- 2012-04-17 HK HK12103754.6A patent/HK1163340A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063934A (en) * | 1987-10-07 | 1991-11-12 | Advanced Techtronics, Inc. | Permanent magnet arrangement |
| US6084498A (en) * | 1998-08-21 | 2000-07-04 | Dexter Magnetic Technologies, Inc. | Magnetic decoupler |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1163340A1 (en) | 2012-09-07 |
| CN102360698A (en) | 2012-02-22 |
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