CN208126956U - A kind of demagnetization case and eraser system - Google Patents
A kind of demagnetization case and eraser system Download PDFInfo
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- CN208126956U CN208126956U CN201820716548.XU CN201820716548U CN208126956U CN 208126956 U CN208126956 U CN 208126956U CN 201820716548 U CN201820716548 U CN 201820716548U CN 208126956 U CN208126956 U CN 208126956U
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Abstract
This application discloses a kind of demagnetization case and eraser systems.The demagnetization case includes shell and at least two coils equipped with opening, and at least two coil is separately positioned at least two orientation of the shell, to generate demagnetization signal to carry out demagnetization to the article in the shell.The eraser system includes demagnetization case and power supply.In the present solution, by the demagnetization case that Deperming Facility is arranged to cabinet, and on the shell, one coil of each setting is distinguished at least two directions, thus, it is possible to expand the space in magnetic field in demagnetization case.Therefore, the demagnetization case of this programme can carry out demagnetization to multiple demagnetization labels simultaneously, carry out to the label in multiple faces of staple commodity while erasure effect is more significant, can greatly improve demagnetization efficiency.
Description
Technical field
The application relates to a kind of degaussing gear, in particular to a kind of demagnetization case and eraser system.
Background technique
In supermarket, some labels, such as bar code are often set, to facilitate statistics and checkout on commodity.To commodity into
When row checkout processing, it is only necessary to scan these labels, the information etc. of commodity can be obtained, to complete to settle accounts.In order to realize quotient
Some electronic tags can be usually arranged in the antitheft function of product on commodity, and the electronic tag being arranged on commodity is by processing of magnetizing
Afterwards, specific information can be had.If the electronic tag of commodity does not pass through demagnetization processing in supermarket, it is being carried by antitheft
When equipment, the information inside electronic tag will be detected, to trigger burglary-resisting installation alarm.
In the prior art, the demagnetization of commodity electronic labeling can be completed by Deperming Facility.In the prior art, there is one kind
Deperming Facility, by the way that anti-magnetized coil installation on the robotic arm, each face of the same commodity is scanned by mechanical arm.It is this
Not only structure is complicated for Deperming Facility, with high costs, and when to multiple face demagnetizations for needing demagnetization, and process is complicated, needs
Mechanical arm is set to be moved to each face of article, to achieve the purpose that demagnetization, therefore, this equipment demagnetization efficiency is very low.
In the prior art there are also a kind of more common Deperming Facility, this Deperming Facility is since its is at low cost, using simple
And be widely used, this Deperming Facility is exactly demagnetization plate, however, efficiency is not equally high using demagnetization plate come demagnetization,
Main reason is that：
Only one face of demagnetization plate can generate the magnetic line of force, and the magnetic line of force of demagnetization plate is distributed as shown in Figure 1, and demagnetization plate
Demagnetization section there was only 10 centimetres or so, every time scanning can only scan a commodity, to commodity carry out demagnetization when, need successively
Scan the commodity to demagnetization.And when multiple faces of staple commodity all have when demagnetization label, due to the demagnetization distance of demagnetization plate
It is extremely limited, so needing successively to carry out demagnetization to the label in each face of commodity, that is to say, that demagnetization plate every time can only be to big part
Label on one face of commodity carries out demagnetization.Since a label can only be scanned every time, demagnetization is carried out using demagnetization plate
Speed it is very slow.
Utility model content
In order to overcome above-mentioned deficiency in the prior art, the application's is designed to provide a kind of demagnetization case, is disappeared with improving
Magnetic efficiency.
A kind of demagnetization case, shell and at least two coils including being equipped with opening, at least two coils are respectively set outside
In at least two orientation of shell, to generate demagnetization signal to carry out demagnetization to the article in shell.
Further, shielded layer is set on the outside of the demagnetization case to prevent the article outside demagnetization case to be unmagnetized.
Further, baffle is equipped in the demagnetization box enclosure, so that article collects to the centre of demagnetization case.
Further, magnetic direction caused by the coil being oppositely arranged in the demagnetization box enclosure is identical.
Further, magnetic direction phase caused by the coil being disposed adjacent on the same face in the demagnetization box enclosure
Instead.
The another object of the application is to provide a kind of eraser system, including demagnetization described in power supply and any of the above item
Case.
Further, the eraser system further includes power control switch.
It further, further include detection unit and control unit, the inspection in eraser system described in the eraser system
It surveys unit to be electrically connected with the control unit, the detection unit is used to detect the article in demagnetization case；
Described control unit is connect with the power control switch, the signal control for being detected according to the detection unit
The power control switch.
Further, eraser system described in the eraser system further includes receiving unit described in receiving unit for detecting
Merchandise news in demagnetization case.
Further, the eraser system further includes communication unit, and the communication unit is connect with described control unit,
It is sent for the received information of receiving unit to be sent to cash register system.
In terms of existing technologies, the application has the advantages that：
Demagnetization case provided by the present application, at least both direction is provided with coil on shell, and therefore, at least there are two face energy
The magnetic line of force is enough generated, so that the space in demagnetization box enclosure there can be sufficiently strong magnetic field, therefore, even if being put into number in demagnetization case
More article is measured, or being put into demagnetization case is the large scale article with multiple electronic tags, as long as guaranteeing that article exists
In demagnetization case, the demagnetization of article electronic label can be realized, have the characteristics that demagnetization is high-efficient.
Eraser system provided by the present application, demagnetization case using the above scheme, therefore, the same spy high-efficient with demagnetization
Point.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of existing demagnetization plate；
Fig. 2 is the coil arragement construction schematic diagram of demagnetization case provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of demagnetization case provided by the embodiments of the present application coil positioned opposite；
Fig. 4 is the structural schematic diagram for the coil being adjacently positioned on demagnetization case provided by the embodiments of the present application；
Fig. 5 is the structural schematic diagram of eraser system provided by the embodiments of the present application；
Fig. 6 is the magnetic line of force schematic diagram when magnetic direction for the two coils generation being oppositely arranged is opposite；
Fig. 7 is the magnetic line of force schematic diagram when magnetic direction for the two coils generation being oppositely arranged is identical；
Fig. 8 is the magnetic line of force schematic diagram when magnetic direction for the two coils generation being disposed adjacent is opposite.
Icon：1- demagnetization plate；2- coil；21- first coil；The second coil of 22-；23- tertiary coil；The 4th coil of 24-；
3- shell；4- wire casing；51- power supply；52- power control switch；53- control unit；54- detection unit；55- receiving unit；56-
Communication unit.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the application and simplify description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as the limitation to the application.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, without
It can be interpreted as indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in this application.
As shown in Figure 1, being demagnetization plate 1 in the prior art, coil 2 is provided on demagnetization plate 1.
As shown in Figures 2 to 4, a kind of demagnetization case disclosed in the embodiment of the present application, including the shell 3 equipped with opening and at least
Two coils 2, at least two coils 2 are separately positioned at least two orientation of shell 3, to generate demagnetization signal with external
Article in shell 3 carries out demagnetization.
In the present embodiment, cabinet is set by Deperming Facility, for accommodating the article to demagnetization.When demagnetization case is arranged,
Demagnetization box enclosure 3 can use integrally formed mode, can also be in such a way that various pieces to be connected to composition cabinet.Demagnetization
The shell 3 of case can be with, but is not limited to, and is arranged to square or cuboid, other are various to generate such as by arrangement coils 2
The shape of magnetic field space and suitable receiving article is also to allow to adopt in the present embodiment.In the present embodiment, the size of demagnetization case
It determines as needed.
In the present embodiment, opening is set on the shell 3 of demagnetization case, the article to demagnetization to be put into demagnetization case or
Article in demagnetization case is taken out into demagnetization case.The position of opening can be set according to actual use occasion, be needed to big part
Commodity carry out the demagnetization case of demagnetization, and the size of opening is determined according to the size to demagnetization staple commodity.
Coil 2 at least two on shell 3 is set, and at least two coils 2 are at least separately positioned on shell 3 at least
In two orientation.For example, a coil 2 is arranged in 3 bottom surface of shell, another coil 2 is arranged when two coils 2 of setting
In 3 side of shell, in this way, the bottom of demagnetization case can generate magnetic field, the side of demagnetization case can also generate magnetic field.For another example, it is arranged
When three coils 2, two of them coil 2 is separately positioned on two opposite sides, the setting of a remaining coil 2 is existed
It is bigger when can make space magnetic field compared with two coils 2 on bottom surface.
When coil 2 is set, the position that coil 2 is set is needed to open up wire casing 4 on shell 3, to place coil 2.Wire casing 4
On, the lid matched with wire casing 4 can also be set, coil 2 to be fixed in wire casing 4.Wherein, lid and shell 3 it
Between pass through connector connect.Connector can be buckle, and when connector is buckle, two pairs of buckles, and two pairs of cards are at least arranged
Button is arranged on the different sides of lid, to play the role of fixed outer cover.At this point, fixing groove is arranged on the shell 3 of wire casing 4
Mouthful, the fixing buckle with fixed notch cooperation is set on lid.
Connector is also possible to bolt, when connector is bolt, is arranged at least on the shell 3 on 2 wire casing of coil, 4 side
Two screw holes, and corresponding position is also provided with screw hole on lid, and then lid is fixed on shell 3 by bolt.
Connector is also possible to：Lid is connect by hinged mode with shell 3 on one side, and other at least one of lid
On side be arranged bolt perhaps the set bolt of buckle or buckle with hinge side can collective effect lid to be fixed.
Certainly, lid is fixed on to the mode covered outside and not only limits the scheme recorded with the present embodiment, without prejudice to
Under the premise of this programme central idea, other any schemes that can be fixed on lid on shell 3 can be used.
In one embodiment, the outside of demagnetization case is provided with shielded layer.Due to needing pair when carrying out demagnetization to article
Specific article carries out demagnetization, if being not intended to the article of demagnetization by unexpected demagnetization, this can undoubtedly give the checkout work of supermarket
Come with antitheft work belt greatly difficult.Because the article after demagnetization not will call the police when by burglary-resisting installation.In demagnetization
Shielded layer is arranged in the external of case, can fall the magnetic field shielding of demagnetization case inner space, to avoid the magnetic line of force in demagnetization case
Across demagnetization box enclosure 3, magnetic field is generated around demagnetization case.
In one embodiment, baffle is equipped in shell 3, so that article collects to the centre of demagnetization case.Due to shell 3
The trend of shape relation and the magnetic line of force, it is past positioned at the face of shell 3 and handover position, the magnetic field of the corner portions of shell 3 in face
It is past very weak, therefore, if the label of article falls in these positions just, it cannot achieve the purpose that demagnetization.
In order to guarantee the erasure effect after article enters demagnetization case, just article must be made to fall in magnetic field using suitable scheme
The bigger place of intensity.In order to guarantee that article falls into the place in sufficiently strong magnetic field, the excessively weak space in magnetic field can be hidden
It blocks up and, so that it may enter the space of low-intensity magnetic field to avoid article and its label, to guarantee the erasure effect to article.
When blocking low-intensity magnetic field space, weak magnetic place and high-intensity magnetic field differentiation can be separated by setting baffle, can be made
Article collects to the centre of demagnetization case.In setting, can pass through, but be not limited to, bolt carrys out fixed baffle.Blocking low-intensity magnetic field
When space, strong and weak magnetic field can not only be separated, may be used also using this scheme using baffle with holes by used baffle
To minimize influence of the baffle to magnetic field.
Magnetic direction caused by the coil 2 being oppositely arranged on shell 3 is identical.As shown in figure 3, being provided with phase on shell 3
Pair first coil 21 and the second coil 22.As shown in fig. 6, if the magnetic direction that first coil 21 and the second coil 22 generate
On the contrary, at this point, magnetic pole of the magnetic field of first coil 21 and the generation of the second coil 22 in demagnetization case will phase inside demagnetization case
Together, since the magnetic line of force of same pole can be mutually exclusive, at this point, a weak magnetic place will be generated in the middle position of demagnetization case
It is very no field regions.Weak magnetic place can cause very deleterious effect without field regions to erasure effect.
As shown in fig. 7, when the magnetic pole that first coil 21 and the second coil 22 generate is identical, the magnetic of the generation of first coil 21
The magnetic pole that the magnetic field that the magnetic pole and the second coil 22 that field is formed in demagnetization case generate is formed in demagnetization case is on the contrary, at this point, magnetic
The line of force will be directed toward another coil 2 from one of coil 2, form the complete magnetic line of force between two coils 2, because
This, there is no weak magnetic place or without field regions between the two coils 2.
Magnetic direction caused by the coil 2 being disposed adjacent on the same face on shell 3 is opposite.As shown in figure 4, shell 3
Adjacent tertiary coil 23 and the 4th coil 24 are provided on one face.If generated when tertiary coil 23 and the 4th coil 24
When magnetic pole is identical, the magnetic field that the magnetic pole that the magnetic field that tertiary coil 23 generates is formed in demagnetization case is generated with the 4th coil 24 is disappearing
The magnetic pole formed in magnetic case is identical.Since the magnetic line of force of same pole can be mutually exclusive, at this point, the middle position of demagnetization case just
It is very no field regions that a weak magnetic place, which can be generated,.Weak magnetic place can cause erasure effect without field regions very bad
It influences.
As shown in figure 8, if tertiary coil 23 and the magnetic direction of the 4th coil 24 generation are on the contrary, at this point, in demagnetization case
Inside, the field pole that tertiary coil 23 and the 4th coil 24 generate will conversely, because opposite magnetic pole magnetic line of force meeting
It attracts each other, at this point, the magnetic line of force will be directed toward another coil 2, the shape between two coils 2 from one of coil 2
At the complete magnetic line of force, therefore, there is no weak magnetic place or without field regions between the two coils 2.
Present invention also provides a kind of eraser systems, as shown in figure 5, in the eraser system, including above-mentioned any one
Kind demagnetization case and power supply 51, power supply 51 are used to provide electric energy for eraser system, especially provide electricity for the coil of eraser system 2
Energy.
Wherein, power supply 51 is separately connected with each coil 2.In the present embodiment, different using 51 pairs of the same power supply
Coil 2 is powered, and can guarantee to generate uniform magnetic field in demagnetization case.
It in one embodiment, further include power control switch 52 in eraser system.Power control switch 52 is connected to electricity
On route between source 51 and coil 2, power control switch 52 is to 2 power on/off of control coil.
It in another embodiment, further include detection unit 54 and control unit 53, the detection in the eraser system
Unit 54 is electrically connected with described control unit 53, and the detection unit 54 is used to detect the article in demagnetization case；The control is single
Member 53 is connect with the power control switch 52, and the signal for being detected according to the detection unit 54 controls the power supply control
Switch 52.
In the present embodiment, detection unit 54 and control unit 53 are set in eraser system, examined with detection unit 54
It surveys in demagnetization case and whether is placed with article, and will test unit 54 and be electrically connected with control unit 53.In this way, detection unit 54 detects
Signal can send control unit 53 to.Then control unit 53 is connect with power control switch 52, control unit 53
Power control switch 52 can be controlled, thus the energization and power-off of control coil 2.Due to control unit 53 also and detection unit
54 connections, therefore, control unit 53 can control 51 control switch of power supply according to the detection signal of detection unit 54, thus real
It is existing, when having object in demagnetization case, power control switch 52 is opened, so that coil 2 is powered and generates magnetic field.Do not have when in demagnetization case
It when having object, is not powered to coil 2, to have the function that save energy consumption, and the unnecessary energization by reducing coil 2
Time, the service life of extension coil 2.
Eraser system further includes receiving unit 55, and the receiving unit 55 is used to detect the merchandise news in demagnetization case.It is super
When settling accounts in city, not only only need to carry out demagnetization processing to article, it is also necessary to, the relevant information of statistics checkout article, thus
Calculate price and the storage situation of article etc. of article.Existing checkout system and eraser system are often independent from each other two
Therefore a system in checkout, is generally required to carry out checkout and demagnetization two operations respectively, extremely be wasted time.The present embodiment
In the eraser system, it is provided with detection unit 54, when placing an article within demagnetization case demagnetization, reads item related information,
Avoid the trouble that Item Information is read in individually scanning.
It further include communication unit 56 in eraser system, the communication unit 56 is connect with described control unit 53, and being used for will
The received information of receiving unit 55 is sent to cash register system transmission.Communication unit 56 is set in eraser system, can be realized and disappear
Magnetic system and external information mutual communication.In the present embodiment, receiving unit 55 is connect with communication unit 56, at work, is received
Unit 55 acquires Item Information, and Item Information is sent to communication unit 56, control of the communication unit 56 in control unit 53
Under, the information that receiving unit 55 receives just is sent to external system, such as cash register system.
In conclusion demagnetization structure is set the cabinet form being made of shell 3 by the application, and is arranged in cabinet
For opening to access article, an at least coil 2 is respectively set at least two directions on shell 3.Therefore can make larger in cabinet
In space all with sufficient intensity magnetic field, thus realize simultaneously to multiple labels carry out demagnetization, avoid one by one to label into
The trouble of row demagnetization can save the erasing time, improve demagnetization efficiency.
In embodiment provided herein, it should be understood that disclosed device and system, it can also be by other
Mode realize.The apparatus embodiments described above are merely exemplary
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion so that article or equipment including a series of elements not only include those elements, but also is wrapped
Other elements that are not explicitly listed are included, or further include for this article or the intrinsic element of equipment.Do not having more
In the case where more limitations, the element that is limited by sentence "including a ...", it is not excluded that include the element article or
There is also other identical elements in person's equipment.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of demagnetization case, which is characterized in that shell and at least two coils including being equipped with opening, at least two coil
It is separately positioned at least two orientation of the shell, to generate demagnetization signal to disappear to the article in the shell
Magnetic.
2. demagnetization case according to claim 1, which is characterized in that setting shielded layer is described to prevent on the outside of the demagnetization case
Article outside demagnetization case is unmagnetized.
3. demagnetization case according to claim 1, which is characterized in that baffle is equipped in the shell, so that article is to described
Collect the centre of demagnetization case.
4. demagnetization case according to claim 1-3, which is characterized in that the coil institute being oppositely arranged on the shell
The magnetic direction of generation is identical.
5. demagnetization case according to claim 1-3, which is characterized in that be disposed adjacent on the same face on the shell
Coil caused by magnetic direction it is opposite.
6. a kind of eraser system, which is characterized in that including power supply and the described in any item demagnetization casees of claim 1-5.
7. eraser system according to claim 6, which is characterized in that further include power control switch.
8. eraser system according to claim 7, which is characterized in that further include detection unit and control in the eraser system
Unit processed, the detection unit are electrically connected with the control unit, and the detection unit is used to detect the article in demagnetization case；
Described control unit is connect with the power control switch, described in the signal control for being detected according to the detection unit
Power control switch.
9. eraser system according to claim 8, which is characterized in that the eraser system further includes receiving unit, described
Receiving unit is used to detect the merchandise news in demagnetization case.
10. eraser system according to claim 9, which is characterized in that it further include communication unit, the communication unit and institute
Control unit connection is stated, is sent for the received information of receiving unit to be sent to cash register system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716548.XU CN208126956U (en) | 2018-05-14 | 2018-05-14 | A kind of demagnetization case and eraser system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716548.XU CN208126956U (en) | 2018-05-14 | 2018-05-14 | A kind of demagnetization case and eraser system |
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| CN208126956U true CN208126956U (en) | 2018-11-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841371A (en) * | 2019-02-20 | 2019-06-04 | 北京未来购电子商务有限公司 | A kind of degaussing gear and settlement device of doing shopping |
| CN110729093A (en) * | 2019-09-29 | 2020-01-24 | 江苏圣旺科技有限公司 | Acoustic-magnetic soft label demagnetizer, demagnetizing all-in-one machine and demagnetizing method |
| CN112865470A (en) * | 2020-12-30 | 2021-05-28 | 歌尔股份有限公司 | Vibrator and electronic apparatus |
-
2018
- 2018-05-14 CN CN201820716548.XU patent/CN208126956U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841371A (en) * | 2019-02-20 | 2019-06-04 | 北京未来购电子商务有限公司 | A kind of degaussing gear and settlement device of doing shopping |
| CN109841371B (en) * | 2019-02-20 | 2024-04-26 | 北京未来购电子商务有限公司 | Demagnetizing device and shopping settlement equipment |
| CN110729093A (en) * | 2019-09-29 | 2020-01-24 | 江苏圣旺科技有限公司 | Acoustic-magnetic soft label demagnetizer, demagnetizing all-in-one machine and demagnetizing method |
| CN110729093B (en) * | 2019-09-29 | 2021-12-14 | 江苏圣旺科技有限公司 | Acoustic-magnetic soft label demagnetizer, demagnetizing all-in-one machine and demagnetizing method |
| CN112865470A (en) * | 2020-12-30 | 2021-05-28 | 歌尔股份有限公司 | Vibrator and electronic apparatus |
| CN112865470B (en) * | 2020-12-30 | 2022-06-21 | 歌尔股份有限公司 | Vibrator and electronic apparatus |
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Denomination of utility model: A kind of demagnetization case and eraser system Effective date of registration: 20181229 Granted publication date: 20181120 Pledgee: Qingdao high tech Cci Capital Ltd Pledgor: Medium cloud Science and Technology Ltd. of Qingdao Strong Jet Registration number: 2018370010151 |