CN102360698A - Magnetic detacher provided with open access - Google Patents
Magnetic detacher provided with open access Download PDFInfo
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- CN102360698A CN102360698A CN2011102351333A CN201110235133A CN102360698A CN 102360698 A CN102360698 A CN 102360698A CN 2011102351333 A CN2011102351333 A CN 2011102351333A CN 201110235133 A CN201110235133 A CN 201110235133A CN 102360698 A CN102360698 A CN 102360698A
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- magnet
- magnetic
- detacher
- toroidal
- magnetic detacher
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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 the application people for Sensormatic Electronics Corp, international filing date be December 1, international application no in 2005 be 200580052476.9 for PCT/US2005/043958, national applications number, denomination of invention divides an application for the application for a patent for invention of " magnetic detacher with open visit ".
Background technology
Electronic article surveillance (EAS) system is designed and prevents without permission from the controlled area mobile article.Typical EAS system can comprise supervisory control system and one or more safety label.Said supervisory control system can be set up interrogation in the accessing points of said controlled area.Safety label can be secured on the article such as the clothes commodity.Get into interrogation if add the article of label, then possibly trigger alarm, be used to represent to have shifted out the article that have label without permission from said controlled area.Generally, can leave controlled area and before not triggering alarm, must make that safety label is invalid at the article that have label.
Safety label can adopt various ways, comprising soft label and hard label.Usually, soft label is disposable, only be used once, and hard label can be reused.A label that example is a back side viscosity of soft label.Soft label can be made invalid (deactivate) by the invalid unit such as scanner, and said scanner uses specific magnetic field to make that said soft label is invalid during when its contact or near said soft label.
Hard label generally includes: the plastic label main body, and it has held the EAS transducer; And locking device comprises pin or tack, its through article and the folder to said tag body so that article and label are tightened together.Generally, hard label needs detacher unit to remove tack from tag body, and makes said article to separate with hard label.In some applications, detacher unit can comprise magnet assembly, and it applies magnetic field to discharge said tack to tag body.
Fig. 1 diagram traditional hard label 10, it has plastic label main body 11, plastic label main body 11 is formed with jut 12.Said tag body 11 is held EAS transducer 13, and it is used to trigger alarm.Said hard label 10 comprises the tack 14 of the head 15 with expansion.As shown in the figure, tack 14 clamped devices 16 are fastened in the tag body 11.
Fig. 2 diagram the traditional magnetic assembly 20 of detacher unit.Magnet assembly 20 comprises cylindrical magnet 21 and magnetized on the contrary toroidal magnet 22, and toroidal magnet 22 is overlayed 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 for the traditional hard label such as hard label 10 well, 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 the cavity 23, to be utilized in the high-intensity magnetic field in the toroidal magnet 22.Magnet assembly 20 provides in cavity 23 is enough to force clamping device 16 to break away from and allow to take out from tag body 11 magnetic field of the approximate vertical of tack 14.
In using such as tagged many taggings of bottle and CD, for example, the clamping device of hard label can be embedded in the existing packing of article, perhaps can have little profile minimizing the possibility of inefficacy, and the placement of item of convenience.For such application and assurance requirement, need different stripping attachment designs that the open visit for the clamping device of said embedding or little profile is provided, and simultaneously, enough magnetic field is provided.
Description of drawings
Fig. 1 diagram traditional hard label.
Fig. 2 diagram the traditional magnetic assembly of detacher unit.
Fig. 3 diagram according to the magnetic detacher of an embodiment.
Fig. 4 diagram according to the magnetic detacher of an embodiment.
Fig. 5 diagram according to the magnetic detacher of an embodiment.
Fig. 6 diagram according to the figure of an embodiment.
Fig. 7 diagram according to the figure of an embodiment.
Embodiment
Can provide a plurality of details at this and come to understand up hill and dale embodiments of the invention.But those skilled in the art can understand not have putting into practice embodiments of the invention under the situation of these details.In addition, do not describe known method, process, parts and circuit in detail, so that do not obscure embodiments of the invention.Be appreciated that concrete structure disclosed herein and function detail can be representational, and must not limit scope of the present invention.
It should be noted that any special characteristic, structure or the characteristic of quoting the said embodiment description of expression combination for " embodiment " is included at least one embodiment in specification.Everywhere the same embodiment of the inevitable all indications of appearance of phrase " in an embodiment " in specification.
Fig. 3 diagram 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 can comprise one or more permanent magnets with toroidal magnet 33.Usually, permanent magnet has the magnetized axis of qualification 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 the 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 handled, and said processing comprises the compression of parts when having surrounding magnetic field for example, the 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 said cobalt magnet is such as being SmCo (SmCo) magnet and aluminium nickel cobalt (AlNiCo) magnet.Permanent magnet can comprise magnet sintering and/or bonding.Said permanent magnet can comprise that also multiple coating is to stop corrosion.
In each embodiment, magnetic detacher 30 is provided the visit opened with arranging to various magnetic clamping devices by structuring.Therefore, magnetic detacher 30 can break away from the clamping structure of hard label of any angle position that is positioned at respect to it.In various implementations, magnetic detacher 30 is configured to provide around its comparatively symmetrical magnetic field, 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 and the upper surface of toroidal magnet 33 roughly coplane with concentric.As shown in the figure, cylindrical magnet 32 is substantially flush with toroidal magnet 33, allows to go up in any direction to admit hard label.The magnetic detacher 30 therefore various magnetic clamping devices in hard label provides open visit.Said embodiment is not limited in this context.
In some embodiment, the upper surface of cylindrical magnet 32 can upwards or downwards slightly squint from the upper surface 35 of toroidal magnet 33.For example, the upper surface 34 of cylindrical magnet 32 can be from the upwards perhaps downward skew 2-3 millimeter of the upper surface 35 of toroidal magnet 33.Said 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 a plurality of part 36-1-n, and wherein, n representes positive integer value, and each of a plurality of part 36-1-n is magnetized on the direction at the center of pointing to toroidal magnet 33.In embodiment shown in Figure 3, for example, toroidal magnet 33 is divided into the 36-1 of first, second portion 36-2, third part 36-3 and the 4th part 36-4 by four.In Fig. 3, white arrow is represented magnetized direction.In this embodiment, for the first half of toroidal magnet 33, magnetic flux inwardly points to the center of toroidal magnet 33, and is bent upwards out outside the toroidal magnet 33.The magnetic field of toroidal magnet 33 is added to the magnetic field that upward refers to that is 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 down the magnetic field that refers to, and toroidal magnet 33 can outwards guide the center of magnetic flux from toroidal magnet 33.
In various implementations, magnet assembly 31 provides the magnetic field of symmetry relatively around it, 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, with acquisition keeper effect, and enhanced surface magnetic field.
In each embodiment, toroidal magnet 33 can be divided into four or more part, and each magnetic part is magnetized on the direction at the center of pointing to toroidal magnet 33.Be appreciated that be less than under four the situation of part that toroidal magnet 33 can have sizable changes of magnetic field, so clamping device only can break away from specific angle position.
Fig. 4 diagram 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 can comprise one or more permanent magnets with semi-ring magnet 43.
In each embodiment, magnetic detacher 40 is provided open visit with arranging from the various magnetic clamping devices of a side direction of magnet assembly 41 by structuring.Therefore, magnetic detacher 40 can break away from the clamping structure that is located at respect to the hard label of the various angle positions of a side of magnet assembly 41.Generally; The height of semi-ring magnet 43 (for example 12 millimeters) will be greater than the height (for example 7 millimeters) of the toroidal magnet 22 of magnet assembly 20; With the various clamping devices that provide enough magnetic field to break away from hard label, a side of magnetropism assembly 41 provides open visit simultaneously.Said embodiment is not limited in this context.
Fig. 5 diagram an embodiment of magnetic detacher 50, in present embodiment, magnetic detacher 50 comprises magnet assembly 51, it comprises first rectangular magnet 52, second rectangular magnet 53 and the 3rd rectangular magnet 54.In various implementations, first rectangular magnet 52, 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 provided the visit opened with arranging to various magnetic clamping devices by structuring.In embodiment shown in Figure 5, for example, the upper surface 57 of the upper surface 55 of first rectangular magnet 52, the upper surface 56 of second rectangular magnet 53 and the 3rd rectangular magnet 54 is coplane roughly.As shown in the figure, first rectangular magnet 52, second rectangular magnet 53 and the 3rd rectangular magnet 54 are substantially flush, hold hard label on allowing in any direction.The magnetic detacher 50 therefore various magnetic clamping devices in hard label provides the visit of opening.Be appreciated that the magnet with rectangular geometry trends towards producing than having the more weak magnetic field of magnet of circular geometry because asymmetric, and do not have the symmetry in orientation.Said embodiment is not limited in this context.
Table 1 diagram the comparison in the Surface field of kilogauss (kG) at the center on the cylindrical magnet of various magnetic detachers configuration.Said configuration can comprise toroidal magnet, and it has internal diameter (ID), external diameter (OD) and height (h).
Table 1
Shown in table 1, use the only stripping attachment configuration of single cylindrical magnet to provide than to use the lower Surface field of stripping attachment configuration of magnet assembly.Use single configurations of magnets to realize that open visit need be through removing toroidal magnet 22 and only use for example cylindrical magnet from the magnet assembly 20 of magnet.Such means dismounting magnetic field of having compromised, because must clamping device is designed to opened by more weak magnet, so clamping device be caught to be easier to lose efficacy through " outside (street) " magnet.
Also as shown in the table 1, can under the situation of the size of suitably having selected to be placed in the toroidal magnet on the cylindrical magnet, realize and the similar magnetic field, magnetic field that provides by traditional stripping attachment configuration of using the toroidal magnet on cylindrical magnet.Therefore, visit of using the stripping attachment of the toroidal magnet flush with cylindrical magnet to be configured in opening is provided when suitably having selected magnet size and enough magnetic field.For example, can the height of toroidal magnet (for example toroidal magnet 33) be brought up to 12 millimeters, perhaps, can external diameter be brought up to greater than 60 millimeters to obtain to be used for the magnetic field levels greater than 7.1kG of such stripping attachment configuration.In addition, use to have having of on cylindrical magnet, superposeing and also enough magnetic field can be provided, allow simultaneously from the open visit of a side of said magnet assembly greater than the stripping attachment configuration of the semi-circular magnet of 12 millimeters height.Said embodiment is not limited to this context.
Fig. 6 diagram the embodiment of curve Figure 60, said curve Figure 60 diagram the magnetic field levels of function of the height that disposes as the various magnetic stripping attachments that use the toroidal magnet flush with cylindrical magnet.As shown in the figure, it is possible using bigger magnet further to strengthen magnetic field.Said embodiment is not limited thereto context.
Fig. 7 diagram the embodiment of curve Figure 70, said Figure 70 diagram as the magnetic field levels of the function of the distance at the center of magnetic surface.As shown in the figure, each embodiment of said 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, said magnetic detacher has longer magnetic field projection, allows magnetic detacher to break away from the clamping device of hard label with bigger distance.Said embodiment is not limited thereto context.
Above-mentioned discussion and magnetic field value are based on the NdFeB magnet that uses level 35.If the magnet of the higher level of the NdFeB magnet of use such as level 50, then magnetic field levels will improve 10-15% usually.Said embodiment is not limited thereto context.
In various implementations, said embodiment comprises: magnetic detacher is used for to various hard labels the visit of opening being provided; And enough strong magnetic field levels is used to break away from the clamping device of such hard label.Said embodiment can be used in the multiple tagging application such as bottle and CD; Wherein, The clamping device of hard label can be embedded in the existing packing of article, perhaps can have little profile minimizing the possibility of inefficacy, and the placement of item of convenience.
In various implementations, said embodiment has avoided and need in using such as the multiple tagging of bottle and CD, use big profile or outstanding design.Use such as the very thin outstanding clip of loading onto of the packing of CD, jewel box or glasses often has problem, because outstanding clip snaps easily or receives other infringement.The use of outstanding clip has also hindered effective use pockets, because jut has taken the space, and makes and is difficult to stack or arrange commodity.
In various implementations, said embodiment comprises the magnetic detacher that uses magnet assembly, and said magnetic detacher provides than will have used the higher magnetic field levels of stripping attachment configuration of single magnet.Such embodiment has avoided being designed for the demand than the clamping device of the hard label of weak magnet, saidly will reduce for invalid antagonism than weak magnet.
Though the special characteristic of said embodiment has been described as said, now for those skilled in the art, can carries out many modifications, substitute, change and equivalent.Therefore, should be understood that appended claim is intended to contain all such modifications and the change in the true spirit that falls into said embodiment.
Claims (20)
1. magnetic detacher comprises:
Magnet assembly; Be used for comprising that from a side direction of said magnet assembly the hard label of clamping device provides open visit; And be used for when said hard label is placed with the multiple angles position with respect to a side of said magnet assembly, providing the magnetic field of the said clamping device that is enough to break away from said hard label, said magnet assembly comprises:
Cylindrical magnet; And
Semi-circular magnet overlays on the said cylindrical magnet with the concentric arrangement mode.
2. according to the magnetic detacher of claim 1, wherein, said magnet assembly comprises one or more permanent magnets.
3. according to the magnetic detacher of claim 2, wherein, said one or more permanent magnets comprise following at least one: NdFeB magnet, hard ferrite magnet, SmCo magnet and AlNiCo magnet.
4. according to the magnetic detacher of claim 1, wherein, said semi-circular magnet comprises and is greater than or equal to 12 millimeters height dimension.
5. magnetic detacher comprises:
Magnet assembly is used for to the hard label that comprises clamping device the visit of opening being provided, and is used to provide the magnetic field of the said clamping device that is enough to break away from said hard label, and said magnet assembly comprises:
Toroidal magnet; And
Cylindrical magnet; Be attached to said annular magnet; And form core in the inside of said toroidal magnet, and said cylindrical magnet and said toroidal magnet are installed with the mode of concentric arrangement, and wherein said cylindrical magnet has the upper surface that the upper surface with respect to said toroidal magnet slightly squints.
6. according to the magnetic detacher of claim 5, wherein, the said upper surface of said cylindrical magnet shifts into the said upper surface that is lower than said toroidal magnet and is less than 3 millimeters.
7. according to the magnetic detacher of claim 5, wherein, the said upper surface of said toroidal magnet shifts into the said upper surface that is higher than said cylindrical magnet.
8. according to the magnetic detacher of claim 5, wherein, said toroidal magnet is by magnetization radially.
9. according to the magnetic detacher of claim 5, wherein, said toroidal magnet comprises a plurality of parts.
10. according to the magnetic detacher of claim 9, wherein, each part of said a plurality of parts is magnetized on the direction at the center of pointing to said toroidal magnet.
11., comprise four or more a plurality of parts according to the magnetic detacher of claim 9.
12. according to the magnetic detacher of claim 5, wherein, the magnetic flux that is produced by said toroidal magnet is inwardly guided to the center of said toroidal magnet, and is bent upwards out said toroidal magnet.
13. according to the magnetic detacher of claim 5, wherein, the magnetic field that is produced by said toroidal magnet is added to the magnetic field by the vertical sensing of said cylindrical magnet generation.
14. according to the magnetic detacher of claim 5, wherein, said magnet assembly provides around the symmetrical relatively radial magnetic field of the axle of said magnet assembly.
15. according to the magnetic detacher of claim 5, also comprise the soft iron material of the bottom that is positioned at said magnet assembly, be used to strengthen magnetic field.
16. according to the magnetic detacher of claim 5, wherein, said magnet assembly comprises one or more permanent magnets.
17. according to the magnetic detacher of claim 16, wherein, said one or more permanent magnets comprise following at least one: NdFeB magnet, hard ferrite magnet, SmCo magnet and AlNiCo magnet.
18. according to the magnetic detacher of claim 5, wherein, said toroidal magnet comprises and is greater than or equal to 10 millimeters height dimension.
19. according to the magnetic detacher of claim 5, wherein, said toroidal magnet comprises and is greater than or equal to 44 millimeters outside dimension.
20. according to the magnetic detacher of claim 5, wherein, said 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 true CN102360698A (en) | 2012-02-22 |
| CN102360698B CN102360698B (en) | 2014-11-12 |
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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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050018A (en) * | 2016-08-01 | 2016-10-26 | 盐城工业职业技术学院 | Quilt drying lock |
Citations (6)
| 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 |
| US5063934A (en) * | 1987-10-07 | 1991-11-12 | Advanced Techtronics, Inc. | Permanent magnet arrangement |
| US6011474A (en) * | 1998-04-28 | 2000-01-04 | Sensormatic Electronics Corporation | Multiple-use deactivation device for electronic article surveillance markers |
| US6084498A (en) * | 1998-08-21 | 2000-07-04 | Dexter Magnetic Technologies, Inc. | Magnetic decoupler |
| US6329895B1 (en) * | 1995-11-14 | 2001-12-11 | Albert Maurer | Releasing magnet for anti-theft devices for sales goods |
-
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 (6)
| 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 |
| US5063934A (en) * | 1987-10-07 | 1991-11-12 | Advanced Techtronics, Inc. | Permanent magnet arrangement |
| US6329895B1 (en) * | 1995-11-14 | 2001-12-11 | Albert Maurer | Releasing magnet for anti-theft devices for sales goods |
| US6011474A (en) * | 1998-04-28 | 2000-01-04 | Sensormatic Electronics Corporation | Multiple-use deactivation device for electronic article surveillance markers |
| US6084498A (en) * | 1998-08-21 | 2000-07-04 | Dexter Magnetic Technologies, Inc. | Magnetic decoupler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050018A (en) * | 2016-08-01 | 2016-10-26 | 盐城工业职业技术学院 | Quilt drying lock |
| CN106050018B (en) * | 2016-08-01 | 2018-03-16 | 盐城工业职业技术学院 | Solarization is locked |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1163340A1 (en) | 2012-09-07 |
| CN102360698B (en) | 2014-11-12 |
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