CN205080695U - High sensitivity single chamber amorphous sound magnetic sensor - Google Patents
High sensitivity single chamber amorphous sound magnetic sensor Download PDFInfo
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- CN205080695U CN205080695U CN201520845728.4U CN201520845728U CN205080695U CN 205080695 U CN205080695 U CN 205080695U CN 201520845728 U CN201520845728 U CN 201520845728U CN 205080695 U CN205080695 U CN 205080695U
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Abstract
The utility model provides a high sensitivity single chamber amorphous sound magnetic sensor, high sensitivity single chamber amorphous sound magnetic sensor includes long and narrow box body and magnetic bias piece, high sensitivity single chamber amorphous sound magnetic sensor still include with box body assorted lid, magnetic bias piece with the lid links to each other, the lid with the box body bottom links to each other and makes magnetic bias piece is located in the cavity of box body, magnetic bias piece is compound semi hard magnetic bias piece, be equipped with amorphous vibration -damping sheet altogether in the cavity of box body, the arc is personally submitted to amorphous vibration -damping sheet's transection altogether, the amorphous altogether vibration -damping sheet the arc outside with magnetic bias piece is relative. The utility model discloses a semi hard magnetism that compounds as magnetic bias piece, can directly set up in the cavity that contains the common vibration -damping sheet of amorphous. The semi hard magnetism that will compound bonds together with the lid, neither can obstruct amorphous vibration -damping sheet's resonance altogether, can also make resonance frequency stable, increases amorphous sound magnetic sensor's sensitivity.
Description
Technical field
The utility model relates to a kind of sound Magnetic Sensor, is specifically related to a kind of high sensitivity list cavity amorphous sound Magnetic Sensor.
Background technology
Amorphous sound Magnetic Sensor, as the major products in EAS field, is widely used in logistics, warehousing system at present, the monitoring in the field such as factory and retail and antitheft.Along with the fast development of economic globalization and international trade, amorphous sound Magnetic Sensor is continued to be applied to more widely in field.Sound Magnetic Sensor must can provide bias magnetic field bias slice containing one or more ferromagnetism magnetostriction materials and amorphous resonance plate and one.When amorphous resonance plate is subject to the excitation of alternating magnetic field under bias field, due to magnetostrictive effect and piezomagnetic effect, resonance plate produces alternately changing between magnetic energy and mechanical energy, such as when exciting signal frequency is 58KHz, sound Magnetic Sensor produces the just triggered alarm chimes of doom Magnetic Sensor that resonates and is usually made up of box body, epiphragma, resonance plate and bias slice, in present widely used sound Magnetic Sensor, bias slice is fixed on bottom box body by epiphragma and double faced adhesive tape, resonance plate is then placed in the cavity of box body, is separated between resonance plate and bias slice by one deck epiphragma.
The fast development of internet is that the amorphous sound Magnetic Sensor preventing towards retail market usurping and the RFID that Facing Digital marks encapsulate and integratedly bring development opportunity.This causes sound Magnetic Sensor must miniaturization, integrated, the emphasis that single cavity amorphous sound Magnetic Sensor will be next round product up-gradation.Such as, publication No. is the Chinese patent " a kind of narrow acoustic magnetic anti-theft label of multi-disc resonance plate " of CN102930683B, and publication No. is that the Chinese patent " a kind of acoustic magnetic anti-theft label " of CN201838126U discloses single cavity acoustic magnetic anti-theft label, but both all do not set forth the relation between amorphous resonance plate and biased magnetic sheet.Amorphous resonance plate and biased magnetic sheet are placed in a cavity, the magnetic phenomenon existed between resonance plate and biased magnetic sheet will cause label vibration damping to increase, and resonance signal is weakened, and label will be caused to work.In addition, biased magnetic sheet is in the state of moving freely in cavity, and label vibration frequency will be caused unstable, and depart from the vibration frequency of excitation field, sensitivity significantly declines, and even can not work.
Utility model content
The purpose of this utility model is to overcome weak point that prior art exists and provides a kind of high sensitivity list cavity amorphous sound Magnetic Sensor.
For achieving the above object, the technical scheme taked: a kind of high sensitivity list cavity amorphous sound Magnetic Sensor, described high sensitivity list cavity amorphous sound Magnetic Sensor comprises long and narrow box body and magnetic bias sheet, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid matched with described box body, described magnetic bias sheet is connected with described lid, described lid makes described magnetic bias sheet be positioned at the cavity of described box body with being connected bottom described box body, described magnetic bias sheet is compound semi-hard magnet bias slice, amorphous resonance plate is provided with in the cavity of described box body, the transversal section of described amorphous resonance plate is curved, relative with described magnetic bias sheet outside the arc of described amorphous resonance plate.
As the preferred scheme of one, described amorphous resonance plate is 1 ~ 4, and the width of described amorphous resonance plate is 4 ~ 12mm, and the length of described amorphous resonance plate is 35 ~ 40mm, and the thickness of described amorphous resonance plate is 20 ~ 30 μm.More preferably, described amorphous resonance plate is 2.
As the preferred scheme of one, the width of described magnetic bias sheet is 3.5 ~ 12mm, and the length of described magnetic bias sheet is 25 ~ 40mm, and the thickness of described magnetic bias sheet is 60 ~ 80 μm.
As the preferred scheme of one, described magnetic bias sheet is cuboid, and described amorphous resonance plate and described magnetic bias sheet are layered arrangement.
As the preferred scheme of one, described magnetic bias sheet is connected by bonding mode with the cavity of described box body.
As the preferred scheme of one, described amorphous resonance plate is FeNiMoB base noncrystal alloy; Described compound semi-hard magnet bias slice is FeNiAlTi base alloy.
As the preferred scheme of one, the housing width of described box body is 5 ~ 13mm, and the cavity length of described box body is 36 ~ 45mm; The width of described box body is 10 ~ 14mm, and the length of described box body is 40 ~ 50mm.The width of cavity described in the utility model is greater than the width of amorphous resonance plate and magnetic bias sheet, and the length of cavity is greater than the length of amorphous resonance plate and magnetic bias sheet; The width of box body described in the utility model is greater than the width of cavity, and the length of box body described in the utility model is greater than the length of cavity; The height of cavity is determined by the thickness of added amorphous resonance plate and magnetic bias sheet.
As the preferred scheme of one, described box body is the plastic casing be made up of PS/PE composite film material.
As the preferred scheme of one, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid matched with described lid, described lid comprises the sealing layer be made up of PE/PET composite film material, and the PE face of described sealing layer seals with the PE face bottom described box body and is connected.
As the preferred scheme of one, described lid also comprises the layers of two-sided covered on the PET face of described sealing layer, and the another side of described layers of two-sided posts release liners.
The centre frequency of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model is 58.0KHz, and bandwidth is 57.8 ~ 58.2KHz (0.4KHz).
The beneficial effects of the utility model are: the utility model provides a kind of high sensitivity list cavity amorphous sound Magnetic Sensor, the utility model adopts compound semi-hard magnet as magnetic bias sheet, the magnetic attraction produced when compound semi-hard magnet can effectively reduce adjacent with amorphous resonance plate, and then the resonance damping effectively reducing amorphous resonance plate.The magnetic attraction that the amorphous sound Magnetic Sensor adopting compound half-hard magnetic material to be prepared from produces to limit semi-hard magnet without the need to using barrier film, can be set directly in the cavity containing amorphous resonance plate, manufacture single cavity amorphous sound Magnetic Sensor, can further improve production efficiency, reduce production cost, compressed products volume.In addition, compound semi-hard magnet and lid are bonded together, not only can not hinder the resonance of amorphous resonance plate, resonant frequency can also be made to stablize, increase the sensitivity of amorphous sound Magnetic Sensor.High sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model is biased compared to amorphous resonance plate and semi-hard magnet the dual-chamber type amorphous sound Magnetic Sensor that magnetic sheet separates and more saves man power and material, and make amorphous sound Magnetic Sensor thinner, slim amorphous sound Magnetic Sensor exquisiteness more attractive in appearance, more favors by businessman.
Accompanying drawing explanation
Fig. 1 is the explosive view of a kind of embodiment of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model;
Fig. 2 is the cross-sectional view of a kind of embodiment of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model.
Embodiment
For the purpose of this utility model, technical scheme and advantage are better described, below in conjunction with specific embodiment, the utility model is described in further detail.
Embodiment 1
A kind of embodiment of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model, as depicted in figs. 1 and 2, described high sensitivity list cavity amorphous sound Magnetic Sensor comprises long and narrow box body 1 and magnetic bias sheet 4, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, described magnetic bias sheet 4 is connected by bonding mode with described lid 5, described lid 5 and the cavity 2 making described magnetic bias sheet 4 be positioned at described box body 1 that is connected bottom described box body 1, described magnetic bias sheet 4 is compound semi-hard magnet bias slice, amorphous resonance plate 3 is provided with in the cavity 2 of described box body 1, the transversal section of described amorphous resonance plate 3 is curved, relative with described magnetic bias sheet 4 outside the arc of described amorphous resonance plate 3.
Described amorphous resonance plate 3 is 2, and the width of described amorphous resonance plate 3 is 4mm, and the length of described amorphous resonance plate 3 is 35mm, and the thickness of described amorphous resonance plate 3 is 20 μm.
The width of described magnetic bias sheet 4 is 3.5mm, and the length of described magnetic bias sheet 4 is 25mm, and the thickness of described magnetic bias sheet 4 is 60 μm.
Described magnetic bias sheet 4 is cuboid, and described amorphous resonance plate 3 and described magnetic bias sheet 4 are in layered arrangement.
Described amorphous resonance plate 3 is FeNiMoB base noncrystal alloy; Described compound semi-hard magnet bias slice is FeNiAlTi base alloy.
Cavity 2 width of described box body 1 is 5mm, and cavity 2 length of described box body 1 is 36mm; The width of described box body 1 is 10mm, and the length of described box body 1 is 40mm.
Described box body 1 is the plastic casing be made up of PS/PE composite film material.
Described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, and described lid 5 comprises the sealing layer be made up of PE/PET composite film material, and the PE face of described sealing layer seals with the PE face bottom described box body and is connected.
Described lid 5 also comprises the layers of two-sided covered on the PET face of described sealing layer, and the another side of described layers of two-sided posts release liners.Described high sensitivity list cavity amorphous sound Magnetic Sensor can be made to possess viscosity by aforesaid operations.
Embodiment 2
A kind of embodiment of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model, as depicted in figs. 1 and 2, described high sensitivity list cavity amorphous sound Magnetic Sensor comprises long and narrow box body 1 and magnetic bias sheet 4, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, described magnetic bias sheet 4 is connected by bonding mode with described lid 5, described lid 5 and the cavity 2 making described magnetic bias sheet 4 be positioned at described box body 1 that is connected bottom described box body 1, described magnetic bias sheet 4 is compound semi-hard magnet bias slice, amorphous resonance plate 3 is provided with in the cavity 2 of described box body 1, the transversal section of described amorphous resonance plate 3 is curved, relative with described magnetic bias sheet 4 outside the arc of described amorphous resonance plate 3.
Described amorphous resonance plate 3 is 2, and the width of described amorphous resonance plate 3 is 12mm, and the length of described amorphous resonance plate 3 is 40mm, and the thickness of described amorphous resonance plate 3 is 30 μm.
The width of described magnetic bias sheet 4 is 12mm, and the length of described magnetic bias sheet 4 is 40mm, and the thickness of described magnetic bias sheet 4 is 80 μm.
Described magnetic bias sheet 4 is cuboid, and described amorphous resonance plate 3 and described magnetic bias sheet 4 are in layered arrangement.
Described amorphous resonance plate 3 is FeNiMoB base noncrystal alloy; Described compound semi-hard magnet bias slice is FeNiAlTi base alloy.
Cavity 2 width of described box body 1 is 13mm, and cavity 2 length of described box body 1 is 45mm; The width of described box body 1 is 14mm, and the length of described box body 1 is 50mm.
Described box body 1 is the plastic casing be made up of PS/PE composite film material.
Described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, and described lid 5 comprises the sealing layer be made up of PE/PET composite film material, and the PE face of described sealing layer seals with the PE face bottom described box body and is connected.
Embodiment 3
A kind of embodiment of high sensitivity list cavity amorphous sound Magnetic Sensor described in the utility model, as depicted in figs. 1 and 2, described high sensitivity list cavity amorphous sound Magnetic Sensor comprises long and narrow box body 1 and magnetic bias sheet 4, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, described magnetic bias sheet 4 is connected by bonding mode with described lid 5, described lid 5 and the cavity 2 making described magnetic bias sheet 4 be positioned at described box body 1 that is connected bottom described box body 1, described magnetic bias sheet 4 is compound semi-hard magnet bias slice, amorphous resonance plate 3 is provided with in the cavity 2 of described box body 1, the transversal section of described amorphous resonance plate 3 is curved, relative with described magnetic bias sheet 4 outside the arc of described amorphous resonance plate 3.
Described amorphous resonance plate 3 is 2, and the width of described amorphous resonance plate 3 is 8mm, and the length of described amorphous resonance plate 3 is 37mm, and the thickness of described amorphous resonance plate 3 is 25 μm.
The width of described magnetic bias sheet 4 is 8mm, and the length of described magnetic bias sheet 4 is 37mm, and the thickness of described magnetic bias sheet 4 is 70 μm.
Described magnetic bias sheet 4 is cuboid shape, and described amorphous resonance plate 3 and described magnetic bias sheet 4 are in layered arrangement.
Described amorphous resonance plate 3 is FeNiMoB base noncrystal alloy; Described compound semi-hard magnet bias slice is FeNiAlTi base alloy.
Cavity 2 width of described box body 1 is 9mm, and cavity 2 length of described box body 1 is 40mm; The width of described box body 1 is 12mm, and the length of described box body 1 is 45mm.
Described box body 1 is the plastic casing be made up of PS/PE composite film material.
Described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid 5 matched with described box body 1, and described lid 5 comprises the sealing layer be made up of PE/PET composite film material, and the PE face of described sealing layer seals with the PE face bottom described box body and is connected.
Described lid 5 also comprises the layers of two-sided covered on the PET face of described sealing layer, and the another side of described layers of two-sided posts release liners.Described high sensitivity list cavity amorphous sound Magnetic Sensor can be made to possess viscosity by aforesaid operations.
Finally to should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model but not restriction to the utility model protection domain; although be explained in detail the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (10)
1. a high sensitivity list cavity amorphous sound Magnetic Sensor, it is characterized in that, described high sensitivity list cavity amorphous sound Magnetic Sensor comprises long and narrow box body and magnetic bias sheet, described high sensitivity list cavity amorphous sound Magnetic Sensor also comprises the lid matched with described box body, described magnetic bias sheet is connected with described lid, described lid makes described magnetic bias sheet be positioned at the cavity of described box body with being connected bottom described box body, described magnetic bias sheet is compound semi-hard magnet bias slice, amorphous resonance plate is provided with in the cavity of described box body, the transversal section of described amorphous resonance plate is curved, relative with described magnetic bias sheet outside the arc of described amorphous resonance plate.
2. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, described amorphous resonance plate is 1 ~ 4, and the width of described amorphous resonance plate is 4 ~ 12mm, the length of described amorphous resonance plate is 35 ~ 40mm, and the thickness of described amorphous resonance plate is 20 ~ 30 μm.
3. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, the width of described magnetic bias sheet is 3.5 ~ 12mm, and the length of described magnetic bias sheet is 25 ~ 40mm, and the thickness of described magnetic bias sheet is 60 ~ 80 μm.
4. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, described magnetic bias sheet is cuboid, and described amorphous resonance plate and described magnetic bias sheet are layered arrangement.
5. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, described magnetic bias sheet is connected by bonding mode with the cavity of described box body.
6. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, described amorphous resonance plate is FeNiMoB base noncrystal alloy; Described compound semi-hard magnet bias slice is FeNiAlTi base alloy.
7. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, the housing width of described box body is 5 ~ 13mm, and the cavity length of described box body is 36 ~ 45mm; The width of described box body is 10 ~ 14mm, and the length of described box body is 40 ~ 50mm.
8. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 1, it is characterized in that, described box body is the plastic casing be made up of PS/PE composite film material.
9. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 8, it is characterized in that, described lid comprises the sealing layer be made up of PE/PET composite film material, and the PE face of described sealing layer seals with the PE face bottom described box body and is connected.
10. high sensitivity list cavity amorphous sound Magnetic Sensor according to claim 9, it is characterized in that, described lid also comprises the layers of two-sided covered on the PET face of described sealing layer, and the another side of described layers of two-sided posts release liners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845728.4U CN205080695U (en) | 2015-10-27 | 2015-10-27 | High sensitivity single chamber amorphous sound magnetic sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845728.4U CN205080695U (en) | 2015-10-27 | 2015-10-27 | High sensitivity single chamber amorphous sound magnetic sensor |
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| Publication Number | Publication Date |
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| CN205080695U true CN205080695U (en) | 2016-03-09 |
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| CN201520845728.4U Active CN205080695U (en) | 2015-10-27 | 2015-10-27 | High sensitivity single chamber amorphous sound magnetic sensor |
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| CN (1) | CN205080695U (en) |
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