CN102592349A - Magnetic sensor device and method for manufacturing magnetic sensor device - Google Patents
Magnetic sensor device and method for manufacturing magnetic sensor device Download PDFInfo
- Publication number
- CN102592349A CN102592349A CN2011104453030A CN201110445303A CN102592349A CN 102592349 A CN102592349 A CN 102592349A CN 2011104453030 A CN2011104453030 A CN 2011104453030A CN 201110445303 A CN201110445303 A CN 201110445303A CN 102592349 A CN102592349 A CN 102592349A
- Authority
- CN
- China
- Prior art keywords
- magnetic sensor
- framework
- sensor element
- sensor device
- mounting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 301
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000000227 grinding Methods 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 15
- 238000013459 approach Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 claims description 7
- 238000004382 potting Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 210000002445 nipple Anatomy 0.000 description 51
- 238000012546 transfer Methods 0.000 description 30
- 230000005415 magnetization Effects 0.000 description 28
- 230000005540 biological transmission Effects 0.000 description 14
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 229910000889 permalloy Inorganic materials 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 210000000981 epithelium Anatomy 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- -1 noncrystalline Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Geophysics And Detection Of Objects (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The present invention provides a magnetic sensor device which can reliably ground a sensor iron core without being limited by a material of the sensor iron core of a magnetic sensor component. The magnetic sensor device (8) comprises a magnetic sensor component (13) having a sensor iron core (32), a frame (20) used for maintaining the magnetic sensor component (13), and a conductive member (41) arranged at the frame (20); wherein the conductive member (41) has an erection part (411) which is erected at the magnetic sensor component (13) from one side of the frame (20), the erection part (411) presses on the sensor iron core (32), in order to electrically connect to the sensor iron core (32). In addition, the conductive member (41) has a contact part (413) which is contacted with a housing (10) covered on the frame (20), as the housing (10) is grounded, the sensor iron core (32) is grounded. Therefore, the sensor iron core (32) can be reliably grounded without being limited by the material of the sensor iron core (32).
Description
Technical field
The present invention relates to the manufacturing approach of magnetic sensor device and magnetic sensor device, this magnetic sensor device is loaded into the media such as bank note of printing have been carried out in detection by magnetic ink the magnetic pattern detecting apparatus of magnetic pattern.
Background technology
As the magnetic pattern detecting apparatus that the magnetic pattern to the medium that transmits along the medium transmission plane detects, known have comprise medium carried out magnetized magnet and the magnetic pattern detecting apparatus of magnetic sensor device that the magnetic pattern of the medium after being magnetized by magnet is read.In the magnetic pattern detecting apparatus that patent documentation 1 is put down in writing; Magnetic sensor device comprises that the tabular sensor that is made up of noncrystalline or permalloy is unshakable in one's determination; Through winding line astragal on the sensor iron core, coil is used in the detection that is configured for producing the field coil of bias magnetic field and is used to detect magnetic pattern.
In addition, in the magnetic pattern detecting apparatus that patent documentation 1 is put down in writing, magnetic sensor device comprises a plurality of magnetic sensor element and the framework that loads these a plurality of magnetic sensor element.In the document, the sensor cover of each magnetic sensor element and medium transmission plane dispose at grade, in order to detect the magnetic pattern of medium accurately.
Patent documentation 1: Japanese Patent Laid is opened the 2009-163336 communique
Summary of the invention
In patent documentation 1, sensor end face unshakable in one's determination becomes the sensor cover of magnetic sensor device, and sensor cover and medium transmission plane dispose at grade, in order to detect the magnetic pattern of medium accurately.Thereby the detection that is formed on the sensor iron core receives the influence of the static noise that causes because of the static discharge from the medium that transmits along the medium transmission plane easily with coil, in order to reach the purpose of reply static noise, with the sensor iron core grounding.
Here; Though the sensor iron core is formed by ferrite, silicon steel plate, noncrystalline, permalloy etc. sometimes; But ferrite can't add the scolder that is used to connect ground wire, and silicon steel plate generally forms anti-oxidation epithelium through electroplating, and therefore is difficult to the additional scolder that is used to connect ground wire.In addition, the weldability of noncrystalline, permalloy is relatively poor, in order to connect ground wire, the special device that need in the deoxidation environment, weld.In addition, these materials are if be exposed to when welding operation under the high temperature, and then shape can change, magnetic properties descends.
In addition; A plurality of magnetic sensor element are being loaded in the magnetic sensor device of framework; If the position of the sensor cover of all magnetic sensor element is not positioned on the same plane, then magnetic sensor element is different with gap between the medium for each magnetic sensor element, therefore; Output level from the detection signal of magnetic sensor element is different, and generation can't detect the problem of magnetic pattern accurately.Here; For the position of the sensor cover that makes all magnetic sensor element is positioned on the same plane; Can consider each magnetic sensor element so that sensor cover and the corresponding to state of predetermined reference sensor face position and be loaded into framework, the sensor cover of a plurality of magnetic sensor element of being loaded into framework is carried out plane lapping in the lump.
But in this method, the dimensional tolerence because of framework causes sensor cover because of each framework deviation to be arranged with respect to the position of framework sometimes.Here; Because magnetic sensor element is loaded into magnetic pattern detecting apparatus through framework; Therefore; If sensor cover has deviation with respect to the position of framework, output level from the detection signal of magnetic sensor element takes place because of each magnetic sensor device different problems in the then medium transmission plane of magnetic pattern detecting apparatus and the gap change between the sensor cover.
Given this, the 1st problem of the present invention is to provide a kind of magnetic sensor device that can easily the sensor iron core grounding not formed the restriction of sensor material unshakable in one's determination.
In addition; Given this; The 2nd problem of the present invention is to provide a kind of manufacturing approach and magnetic sensor device of magnetic sensor device, and the manufacturing approach of this magnetic sensor device can make all the sensors face of a plurality of sensor elements be positioned on the same plane to the regulation of framework appointment.
In order to solve above-mentioned the 1st problem; The invention is characterized in, in the magnetic sensor device that comprises the framework that has sensor magnetic sensor element unshakable in one's determination and magnetic sensor element is kept, comprise the conductive member that is installed on said framework; Said conductive member has the portion of setting up; This sets up portion and is located at said magnetic sensor element from said framework one bogie side frame, and it is unshakable in one's determination in said sensor to be pressed, and forms and this sensor state that is electrically connected unshakable in one's determination; Through with said conductive member on said framework one side joint ground, thereby with said sensor iron core grounding.
According to the present invention; Ground wire is not directly welded in the sensor iron core of magnetic sensor element; But from framework one side conductive member is set up in the sensor iron core, in advance conductive member and sensor iron core are electrically connected, in framework one side with this conductive member ground connection.Thereby, can be with the sensor iron core grounding, and do not formed the restriction of sensor material unshakable in one's determination.In addition, owing to when ground connection, can avoid the sensor iron core is exposed under the high temperature, therefore, sensor shape unshakable in one's determination is changed or magnetic properties decline.
In the present invention, preferably make the said portion that sets up between said framework and said sensor iron core, elastic deformation take place, the said end of leaning on said sensor core side of setting up portion is pressed on the said sensor iron core because of this elastic restoring force of setting up portion.So, the portion of setting up is contacted more reliably with the sensor iron core.In addition, even have under the situation of skew, also can keep the portion of setting up and sensor status of electrically connecting unshakable in one's determination in the " loaded " position of the magnetic sensor element on the framework.
In the present invention, if making said conductive member is metal spring member, then easily under the state that elastic deformation has taken place the portion of setting up is pressed on the sensor iron core.
In addition, in the present invention,, then can suppress its manufacturing cost if conductive member is formed by a sheet metal.
In the present invention; Comprise the 1st magnetic sensor element and the 2nd magnetic sensor element; With as said magnetic sensor element; Said conductive member comprise be set up in said the 1st magnetic sensor element and be pressed in the said sensor of the 1st magnetic sensor element unshakable in one's determination the 1st set up portion and be set up in said the 2nd magnetic sensor element and be pressed in the said sensor of the 2nd magnetic sensor element unshakable in one's determination the 2nd set up portion, with as the said portion that sets up.So, can will be loaded into a plurality of magnetic sensor element ground connection of framework through a conductive member.
In the present invention; For the operation transfiguration that conductive member is installed on framework is prone to; Preferred said framework comprises engaging protrusion, and said conductive member comprises installation portion, and this installation portion is used for being connected with a said end that leans on said frame side that sets up portion; So that this conductive member is installed on said framework; Be formed with the connecting hole that can engage at said installation portion, engage with said connecting hole through making said engaging protrusion, thereby said conductive member is installed on said framework with said engaging protrusion.
In the present invention; Preferably include the housing that covers the electric conductivity on the said framework; Said conductive member comprises contact site, and this contact site extends along the direction away from said framework, and is pressed in the inner peripheral surface part of said housing; Through with said frame ground, thereby with said sensor iron core grounding.So, covering shell on framework, through with frame ground, thus can be with the sensor iron core grounding.Thereby, the operability of sensor iron core grounding is good.
In the present invention, preferred said installation portion comprises fixed width part and the width wide cut part wideer than said fixed width part that is connected continuously with a said end that leans on said frame side that sets up portion, and said connecting hole is formed at said wide cut part.
In the present invention; Preferred said magnetic sensor element comprises iron core; The 1st fender that this iron core is unshakable in one's determination by said sensor, cover a said sensor side unshakable in one's determination, and the 2nd fender that covers said sensor opposite side unshakable in one's determination constitute; Said sensor iron core comprises an exposed portions serve that fender exposes from said the 1st fender and the 2nd fender at least, and the said portion of setting up is pressed in said exposed portions serve.
In the present invention; Whole of the surface of the opposite side that preferred said sensor is unshakable in one's determination covered by said the 2nd fender; The part on the surface of the side that said sensor is unshakable in one's determination is covered by said the 1st fender, and the part that is not covered by said the 1st fender is said exposed portions serve.
In the present invention, an end face of preferred said iron core is a sensor cover, and said exposed portions serve is formed on another end face of the opposition side that is positioned at said sensor cover of said iron core.
In addition; In order to solve above-mentioned the 2nd problem, in the manufacturing approach of the magnetic sensor device that a plurality of magnetic sensor element is loaded into framework, it is characterized in that; Comprise: the framework preparatory process; In this framework preparatory process, as said framework, prepare to be formed with from a side of this framework penetrate into opposite side a plurality of parallel mounting hole and with the framework of the grinding reference field of the axis quadrature of each mounting hole; Insert operation, this insertion operation is respectively inserted each mounting hole with each magnetic sensor element at the sensor cover of each magnetic sensor element under the state of a side; Positioning process, this positioning process is a benchmark with said grinding reference field, on the direction of the axis of said mounting hole, said magnetic sensor element is positioned, and makes said sensor cover outstanding from the 1st opening of a side of said mounting hole; Fixing operation, each mounting hole potting resin of this regular worker's ordered pair is fixed in said framework with each magnetic sensor element; And the plane lapping operation, this plane lapping operation is a benchmark with said grinding reference field, and said sensor cover is carried out plane lapping.
According to the present invention, utilize plane lapping, the sensor cover of each magnetic sensor element is positioned on the same plane.In addition; Because magnetic sensor element is that grinding reference field with the framework that its sensor cover carried out plane lapping is that benchmark carries out with respect to the location of framework; Therefore; Can the position of sensor cover be defined as assigned position, and not receive the restriction of the dimensional tolerence of framework with respect to the grinding reference field of framework.Therefore, can avoid sensor cover because of each framework deviation to be arranged with respect to the position of framework.
In the present invention, preferably in said insertion operation, the inner peripheral surface of said magnetic sensor element and said mounting hole is partly connected, with the direction of the axis quadrature of said mounting hole on said magnetic sensor element is positioned.So, can correct provisioning magnetic sensor element position each other.
In the present invention; Preferably in said insertion operation and said fixedly between the operation, being included in exposing of said framework has the wear plate arrangement step of the end face configuration wear plate of said the 1st opening, in said fixedly operation; Utilize said resin that said wear plate is fixed in said framework; In the plane lapping operation, be benchmark with said grinding reference field, said sensor cover is carried out plane lapping with the surface of said anti-abrasive sheet.So, can utilize wear plate surround magnetic sensor element sensor cover around and protect.In addition, because the surface of wear plate and the sensor cover of each magnetic sensor element are positioned on the same plane, therefore, can utilize wear plate to reduce the wearing and tearing of sensor cover.
In the case, preferably in said positioning process, make said sensor cover from more than the gauge of the outstanding said wear plate of the 1st opening of said mounting hole.So, after plane lapping, sensor cover is exposed.
In the present invention; Preferably in said plane lapping operation; Said resin is carried out plane lapping with the surface of said sensor cover, said wear plate, make the upper surface of said sensor cover, said wear plate the upper surface, and the upper surface of said resin be positioned on the same plane.
Then; The invention is characterized in; A plurality of magnetic sensor element are being loaded in the magnetic sensor device of framework, said framework comprise from a side of this framework penetrate into opposite side a plurality of parallel mounting hole and with the grinding reference field of the axis quadrature of each mounting hole, each magnetic sensor element is inserted each mounting hole with sensor cover towards the state of a side; With said grinding reference field is benchmark; Be positioned in and make said sensor cover, and utilize the resin that is filled in the said mounting hole to fix, through being benchmark with said grinding reference field in said framework from the outstanding state of the 1st opening of a side of said mounting hole; Said sensor cover is carried out plane lapping, make the sensor cover of each magnetic sensor element be positioned on the same plane.
According to the present invention, utilize plane lapping, the sensor cover of each magnetic sensor element is positioned on the same plane.In addition; Because magnetic sensor element is that grinding reference field with the framework that its sensor cover carried out plane lapping is that benchmark carries out with respect to the location of framework; Therefore; Can the position of sensor cover be defined as assigned position, and not receive the restriction of the dimensional tolerence of framework with respect to the grinding reference field of framework.Therefore, can avoid sensor cover because of each framework deviation to be arranged with respect to the position of framework.
In the present invention, preferably the inner peripheral surface of each magnetic sensor element and each mounting hole partly connects, thus with the direction of the axis quadrature of this mounting hole on position.So, can correct provisioning magnetic sensor element position each other.
In the present invention; Preferably include wear plate; This wear plate is placed on the end face of said the 1st opening of exposing of said framework, and utilizes said resin to be fixed in said framework, through being benchmark with said grinding reference field; Plane lapping is carried out with said sensor cover in the surface of said wear plate, thereby make said wear plate and said sensor cover be positioned on the same plane.So, can utilize wear plate surround magnetic sensor element sensor cover around and protect.In addition, because the surface of wear plate and the sensor cover of each magnetic sensor element are positioned on the same plane, therefore, can utilize wear plate to reduce the wearing and tearing of sensor cover.
In the present invention; Preferably through being benchmark with said grinding reference field; To the surface of the surface of said wear plate, said sensor cover, and the upper surface of said resin carry out plane lapping, make the upper surface of said wear plate, said sensor cover the upper surface, and the upper surface of said resin be positioned on the same plane.
According to the related magnetic pattern detecting apparatus of the 1st invention, can be with the sensor iron core grounding, and do not formed the restriction of sensor material unshakable in one's determination.In addition, owing to when ground connection, can avoid the sensor iron core is exposed under the high temperature, therefore, sensor shape unshakable in one's determination is changed or magnetic properties decline.
In addition, manufacturing approach and magnetic sensor device according to the related magnetic sensor device of the 2nd invention can be defined as the position of sensor cover the assigned position with respect to the grinding reference field of framework, and not receive the restriction of the dimensional tolerence of framework.Therefore, can avoid sensor cover because of each framework deviation to be arranged with respect to the position of framework.Thereby; When magnetic sensor device is loaded into magnetic pattern detecting apparatus; The sensor cover and the gap change between the medium transmission plane that are loaded into the magnetic sensor element of magnetic pattern detecting apparatus through framework can be avoided or reduce, the characteristic deviation between magnetic sensor element can also be reduced.
Description of drawings
Fig. 1 is the key diagram that is mounted with the magnetic pattern detecting apparatus of magnetic sensor device of the present invention.
Fig. 2 is the key diagram of magnetic sensor units of the present invention.
Fig. 3 is the stereographic map of cover plate, face side cover plate and rear side cover plate.
Fig. 4 is front view, side view and the vertical view of magnetic sensor device.
Fig. 5 is the cut-open view of magnetic sensor device.
Fig. 6 is front view, side view, vertical view and the upward view of framework.
Fig. 7 is front view, side view and the vertical view of magnetic sensor element.
Fig. 8 is the key diagram of magnetic sensor element.
Fig. 9 is the key diagram of conductive member.
Figure 10 is the key diagram that is inserted in the magnetic sensor device of housing.
Figure 11 is the key diagram of the magnetic sensor device in making.
Figure 12 is the excitation waveform and the detection waveform of magnetic sensor element.
Figure 13 is the partial sectional view of the magnetic sensor device of variation.
Embodiment
Below, with reference to accompanying drawing, describe being mounted with the magnetic pattern detecting apparatus of having used magnetic sensor device of the present invention.
(one-piece construction)
Fig. 1 is the key diagram that schematically shows the major part structure that is mounted with the magnetic pattern detecting apparatus of having used magnetic sensor device of the present invention.As shown in Figure 1, magnetic pattern detecting apparatus 1 has the magnetic sensor units 5 that reads the magnetic pattern of position A detection medium 2 along the media transportation mechanism 4 of the medium 2 of sheets such as medium transfer path 3 transmission banknotes, securities and in the magnetic that is arranged at medium transfer path 3.In addition, in following explanation, for convenience's sake, according to the order up and down of accompanying drawing, to describing up and down of each member.
(magnetic sensor units)
Fig. 2 (a) is the stereographic map that the 1st magnetization in the expression magnetic sensor units 5 is magnetized with the layout of magnet and magnetic sensor device with magnet, the 2nd, and Fig. 2 (b) is the sectional structure chart of magnetic sensor units 5.Fig. 3 (a) is the stereographic map from the beneath cover plate, and Fig. 3 (b) is the stereographic map from beneath face side cover plate, and Fig. 3 (c) is the stereographic map from beneath rear side cover plate.In addition, in Fig. 2, for the configuration of explaining that cover plate, the 1st magnetization are magnetized with magnet with magnet and the 2nd, the structure of omission and schematically illustrated magnetic sensor device.
Face side cover plate 14 is the sheet metals with certain thickness thin plate, and has the contour shape of rectangle.In addition, face side cover plate 14 has the peristome 141 of rectangle at the middle body of medium direction of transfer X.Peristome 141 for example forms through etching.In this example, the gauge of face side cover plate 14 is below the 0.3mm, to be preferably about 0.1mm.Thereby face side cover plate 14 becomes so-called " thin " state, and its rigidity descends.
Rear side cover plate 15 is the sheet material of the sheet metal thicker than face side cover plate 14, and in this example, the gauge of rear side cover plate 15 is about 0.3～0.5mm.Rear side cover plate 15 has certain thickness, has with the 1st magnetization to magnetize with the identical gauge of the gauge of magnet 7 with magnet 6 and the 2nd.The contour shape of rear side cover plate 15 is identical with the contour shape of face side cover plate 14, and rear side cover plate 15 has the identical peristome 151 of shape and this peristome 141 with peristome 141 position overlapped.The peristome 141 of face side cover plate 14 and the peristome of rear side cover plate 15 151 constitute the peristome 111 of cover plate 11.
In addition; Shown in Fig. 3 (c); Rear side cover plate 15 has to be used to install at the upstream side of the 1st direction X1 of peristome 151 and constitutes 1st mounting hole (patchhole) 152 of the 1st magnetization with a plurality of magnets 16 of magnet 6, has to be used to install at the upstream side of the 2nd direction X2 of peristome 151 to constitute the 2nd the 2nd mounting hole (patchhole) 153 that magnetizes with a plurality of magnets 16 of magnet 7.These the 1st mounting holes 152 and the 2nd mounting hole 153 have a plurality of mounting holes 154 respectively, each mounting hole 154 with the direction of medium direction of transfer X quadrature on arrange with prescribed distance.Peristome the 151, the 1st mounting hole 152 and the 2nd mounting hole 153 for example form through etching.
Here, face side cover plate 14 all is stainless steels with rear side cover plate 15, and these face side cover plates 14 and rear side cover plate 15 are by diffusion bond.That is, face side cover plate 14 is pressurized under the state of being close to rear side cover plate 15, heating and forming as one, and cover plate 11 has higher rigidity as a whole.
The 1st magnetization is made up of each magnet 16 in each mounting hole 154 that is embedded into the 1st mounting hole 152 with magnet 6, and the 2nd magnetization is made up of each magnet 16 in each mounting hole 154 that is embedded into the 2nd mounting hole 153 with magnet 7.The 1st magnetization with each magnet 16 of magnet 6 with the direction of medium direction of transfer X quadrature on arrange with prescribed distance, the 2nd magnetize with each magnet 16 of magnet 7 with the direction of medium direction of transfer X quadrature on arrange with prescribed distance.In addition, when when medium direction of transfer X observes, the 1st magnetization is magnetized overlapping with the magnet 16 of magnet 7 with the magnet 16 and the 2nd of magnet 6.
Each magnet 16 is permanent magnets such as ferrite or neodymium magnet, has mutually the same magnetic force.In addition, each magnet 16 forms the rectangular shape with each mounting hole 154 tablings of rear side cover plate 15, has mutually the same shape.In other words, each mounting hole 154 has each magnet 16 corresponding shapes identical with shape.
In addition, each magnet 16 is embedded in each mounting hole 154, under the state that the back side 14b with face side cover plate 14 connects, remain in rear side cover plate 15.Each magnet 16 is being remained under the state of each mounting hole 154; Shown in Fig. 2 (b); Each magnet 16 is at the position of face side cover plate 14 1 sides, form different magnetic poles with the position of face side cover plate 14 opposite sides, works with the back side 14b surface conduct that connects and the medium that on medium transmission plane 11a, the transmits 2 relative magnetizing surfaces of face side cover plate 14.Here, because the back side 14b of each magnet 16 and face side cover plate 14 connects, therefore, the gap of medium transmission plane 11a and each magnet 16 is stipulated by the thickness of slab of face side cover plate 14.
If will keep the 1st magnetization to be installed on the recess 102 of housing 10 with the cover plate 11 of magnet 7 with magnet 6 and the 2nd magnetization; Then the position in cover plate 11 1 sides of magnetic sensor device 8 is inserted into the inboard of the peristome 111 of cover plate 11, the medium transmission plane 11a of cover plate 11 and the sensor cover 8a of magnetic sensor device 8 are positioned on the same plane.In addition, dispose the 1st magnetization with magnet 6, dispose the 2nd at the upstream side of the 2nd direction X2 of magnetic sensor device 8 and magnetize with magnet 7 at the upstream side of the 1st direction X1 of magnetic sensor device 8.In addition; Magnetic sensor device 8 is positioned at the centre that the 1st magnetization is magnetized with magnet 7 with magnet 6 and the 2nd; When medium direction of transfer X observes, a plurality of magnetic sensor element 13 that magnetic sensor device 8 is kept are magnetized overlapping with the magnet 16 of magnet 7 with the 1st magnetization with the magnet 16 and the 2nd of magnet 6 respectively.
Here; Magnetic sensor device 8 detects magnetic flux under the state that the medium 2 after the magnetization has been applied bias magnetic field; Magnetic pattern detecting apparatus 1 will contrast from the detection waveform and the reference waveform of magnetic sensor device 8, thereby judges the true and false of medium 2 or the kind of differentiation medium 2.
(magnetic sensor device)
Fig. 4 (a)～Fig. 4 (c) is front view, side view and the vertical view of magnetic sensor device 8.Front view is from the observed figure of medium direction of transfer X, side view be from the observed figure of direction Y of medium direction of transfer X quadrature.Fig. 5 is the cut-open view of magnetic sensor device.Fig. 6 (a)～Fig. 6 (d) is respectively front view, side view, vertical view and the upward view of framework.Fig. 7 (a)～Fig. 7 (c) is respectively front view, side view and the vertical view of magnetic sensor element 13.Fig. 8 is the key diagram of iron core, field coil and the magnetic test coil of magnetic sensor element 13.
As shown in Figure 4, magnetic sensor device 8 comprises framework 20 and so that the state of sensor cover 13a towards the top is held a plurality of magnetic sensor element 13 in this framework 20.The sensor cover 13a of magnetic sensor element 13 constitutes the sensor cover 8a of magnetic sensor device 8.
Fig. 7 (a)～Fig. 7 (c) is respectively front view, side view and the vertical view of magnetic sensor element 13.Fig. 8 is the key diagram of iron core, field coil and the magnetic test coil of magnetic sensor element 13.As shown in Figure 7, magnetic sensor element 13 comprises by the 1st, the 2nd fender 30,31 and the iron core 33 that is clipped in the three-decker that these the 1st, the 2nd fenders 30, sensor unshakable in one's determination 32 between 31 constitute.1st, the 2nd fender 30,31 is formed by nonmagnetic materials such as potteries, and sensor 32 magnetics by ferrite, noncrystalline, permalloy, silicon steel plate etc. unshakable in one's determination form.
As shown in Figure 8, iron core 33 comprises main part 331, from the middle body of the upper end of main part 331 to outstanding the 1st teat 332 in top and at the opposition side of the 1st teat 332 and from the 2nd outstanding downwards teat 333 of middle body of the bottom of main part 331.In addition, also comprise from 332 liang of the 3rd side-prominent teats 334 of the 1st teat of the upper end of main part 331 and from 333 liang of the 4th side-prominent teats 335 of the 2nd teat of the bottom of main part 331.
Here, shown in Fig. 7 (b), though utilize the 2nd fender 31 to come the whole surface of covering sensor 32 opposite sides unshakable in one's determination, with the end portion of the end portion of the 2nd teat 333 of the 1st fender 30 and the 4th teat 335 from the lower end excision Rack.That is, the part of a side surface of sensor unshakable in one's determination 32 is covered by the 1st fender 30.Therefore, the end portion of the 2nd teat 333 of a side surface of sensor unshakable in one's determination 32 and the end portion of the 4th teat 335 become exposed portions serve 32a.In addition; In the structure shown in Fig. 7 (b); Though utilize the 2nd fender 31 to come the whole surface of covering sensor 32 opposite sides unshakable in one's determination; But also can be identical with the 1st fender 30, with the end portion of the end portion of the 2nd teat 333 of the 2nd fender 31 and the 4th teat 335 from the lower end excision Rack, end portion and the end portion of the 4th teat 335 of the 2nd teat 333 on the opposite side surface of sensor unshakable in one's determination 32 exposed.
In addition, like Fig. 7, shown in Figure 8, each magnetic sensor element 13 comprises and is used to the magnetic test coil 35 that produces the field coil 34 of bias magnetic field and be used to detect the magnetic pattern of medium 2.The inboard of field coil 34 through in main part 331, via the 1st coil former 36, winding wire being wound in the 1st teat 332 and the 2nd teat 333 i.e. position of the inboard of the 2nd teat 334 and the 4th teat 335 constitutes.Magnetic test coil 35 constitutes through via the 2nd coil former 37 winding wire being wound in the 1st teat 332.Thus, the front end face of the 1st teat 332 becomes the sensor cover 13a of magnetic sensor element 13.Here, as shown in Figure 7, at the position that is positioned at the 2nd fender 31 1 sides of the 1st coil former 36 4 terminal pins 38 are installed, they extend downwards.Shown in Fig. 7 (a), among 4 terminal pins 38, be disposed at 2 inboard terminal pins 38 and extend from the interior side of the Width of the 2nd teat 333.In addition, 2 terminal pins 38 that are disposed at the outside are extended from the interior side of the Width of the 4th teat 335.In addition, the central authorities 4 terminal pins 38 are equipped with the fastening pin 39 of size than terminal pins 38 weak points.On fastening pin 39, fastening has the winding wire of field coil 34.
Each magnetic sensor element 13 so that sensor cover 13a state up be inserted into each mounting hole 23 from the top.In addition, as shown in Figure 5, the thickness direction that makes iron core 33 is towards medium direction of transfer X, and makes the side that be formed with engaging protrusion 27 of the 1st fender 30 towards framework 20, under this state, inserts in each mounting hole 23.Each magnetic sensor element 13 is being inserted under the state in the mounting hole 23; Become the 2nd teat 333 that is inserted into iron core 33 and the state between the 4th teat 335 for partially enclosed 28; The 1st teat the 332, the 3rd teat 334 is outstanding from the open upper end 23a of mounting hole 23, and the 2nd teat the 333, the 4th teat 335 and 4 terminal pins 38 are outstanding from the lower ending opening 23b of mounting hole 23.In addition; Each magnetic sensor element 13 is being inserted under the state in the mounting hole 23; Shown in Fig. 4 (c), each magnetic sensor element 13 connects with the inner peripheral surface part 23c of mounting hole 23, be arranged in the direction Y of medium direction of transfer X quadrature on the state of prescribed distance location.Prescribed distance is identical with the arrangement pitches of magnet 7 with the arrangement pitches and the 2nd magnetization of magnet 6 with the 1st magnetization.
Then, shown in Fig. 4 (c), insert the wear plate 19 of 2 rectangles in the inboard of the flange part 24 of framework 20.These 2 wear plate 19 are to be placed on the upper surface 21 of framework 20 at the state that separates specified gap on the medium direction of transfer X.2 wear plate 19 constitute, have certain thickness member by pottery etc. respectively, with the direction of medium direction of transfer X quadrature on extend into certain width.
Under the state of the upper surface 21 that 2 wear plate 19 is positioned over framework 20, the upper surface 19a of each wear plate 19 is more outstanding to the top than the upper surface of flange part 24.In addition; As shown in Figure 5; The 1st teat 332 of the iron core 33 of insertion magnetic sensor element 13 and the upper part of the 2nd teat 334 in the gap between two wear plate 19, the upper surface 332a (sensor cover 13a) of the 1st teat 332 of the upper surface 19a of 2 wear plate 19, iron core 33 and the upper surface 334a of the 3rd teat 334 are positioned on the same plane., in each mounting hole 23, be filled with resin 29 here, utilize this resin 29 that 2 wear plate 19 and each magnetic sensor element 13 are fixed in framework 20.
Shown in Fig. 4 (a), Fig. 4 (b), the conductive member 41 that is used for sensor 32 ground connection unshakable in one's determination of magnetic sensor element 13 is installed at the end portion of framework 20.Fig. 9 (a) is the vertical view of conductive member 41; Fig. 9 (b) is the front view of the conductive member 41 of the state that is installed on framework 20 being observed from medium direction of transfer X; Fig. 9 (c) is the key diagram that schematically shows the state of the magnetic sensor device 8 of the lower surface part 22a that conductive member 41 is installed on framework 20 being observed from medium direction of transfer X, and Fig. 9 (d) schematically shows the key diagram of state that conductive member 41 is installed on the lower surface part 22a of framework 20.
Shown in Fig. 9 (a), Fig. 9 (d); Installation portion 412 is included in the direction Y of medium direction of transfer X quadrature and goes up extension so that respectively set up the fixed width part 412a that the end parts of framework 20 1 sides of portion 411 is connected, and is provided with wide cut part 412b a plurality of and that width is wideer than fixed width part 412a in the centre of this fixed width part 412a.Be formed with the connecting hole 412c that can engage respectively with the engaging protrusion 27 of framework 20 at each wide cut part 412b.Shown in Fig. 9 (c), Fig. 9 (d), engage with engaging protrusion 27 through making connecting hole 412c, and utilize heat that engaging protrusion 27 fusions are melted blocking connecting hole 412c, thereby conductive member 41 is installed on the lower surface part 22a of framework 20.
Here; Though the state of conductive member 41 before being installed on framework 20, be that the shape of conductive member 41 self is smooth except the contact site 413 at two ends; But because the top of lower end of the 2nd teat 333 and the 4th teat 335 that the lower surface part 22a of the framework 20 of conductive member 41 is positioned at the iron core 33 of magnetic sensor element 13 is installed; Therefore; If the installation portion 412 of conductive member 41 is fixed in the lower surface part 22a of framework 20; Then as shown in Figure 5, a plurality of portions' (the 1st sets up portion, the 2nd sets up portion) 411 that set up are inserted into a plurality of magnetic sensor element (the 1st magnetic sensor element, the 2nd magnetic sensor element) 13 that are loaded into framework 20 respectively, make its between the sensor of framework 20 and each magnetic sensor element 13 unshakable in one's determination 32 towards below elastic deformation takes place.Consequently, fore-end (end parts of the sensor core side) 411a that respectively sets up sensor 32 sides unshakable in one's determination of portion 411 presses on the state of exposed portions serve 32a of the 4th teat 335 of sensor unshakable in one's determination 32 because of this elastic restoring force of setting up portion 411 becomes.Thus, form the sensor unshakable in one's determination 32 of a plurality of magnetic sensor element 13 and the status of electrically connecting of conductive member 41.
Here, as shown in Figure 2, magnetic sensor device 8 is held in being mounted with the 1st and magnetizes the housing 10 that magnetizes with magnet 7 with magnet 6 and the 2nd, thereby constitutes magnetic sensor units 5.Figure 10 (a) is that magnetic sensor device 8 is held in the key diagram of the state of housing 10, and Figure 10 (b) is that magnetic sensor device 8 is held in the cut-open view of the state of housing 10.Shown in Figure 10 (b); Housing 10 comprises the groove 52 that can supply magnetic sensor device 8 to insert; If magnetic sensor device 8 is inserted into the groove 52 from the top, the contact site 413 of the conductive member 41 that then part 22a is fixing in the lower surface of framework 20 connects with the inner peripheral surface part 52a of groove 52.Here, housing 10 is through framework 20 ground connection such as grade of magnetic pattern detecting apparatus 1.Thus, through housing 10 and sensor iron core 32 ground connection of conductive member 41 with magnetic sensor element 13.
(manufacturing approach of magnetic sensor device)
With reference to Fig. 4, Figure 11, the manufacturing approach of magnetic sensor device 8 is described.Figure 11 (a) is the front view of the magnetic sensor device 8 before the upper surface of magnetic sensor device is ground, and Figure 11 (b) is its side view.
When making magnetic sensor device 8; Preparation be formed with from a side of framework 20 penetrate into opposite side a plurality of parallel mounting hole 23 and with the framework 20 (framework preparatory process) of the grinding reference field of the axis L-orthogonal of each mounting hole 23, in each mounting hole 23 of framework 20, insert each magnetic sensor element 13 (insertion operation).Thus, each magnetic sensor element 13 connects with the inner peripheral surface part 23c of each mounting hole 23, with the direction of the direction quadrature of the axis L of mounting hole 23 on, promptly be positioned in medium direction of transfer X and with the direction Y of medium direction of transfer X quadrature on.Consequently, but correct provisioning magnetic sensor element 13 position each other.
Then; Utilize anchor clamps (not shown) a plurality of magnetic sensor element 13 the mounting hole 23 that is inserted into framework 20 to be supported from downside; Grinding reference field 26 with framework 20 is a benchmark, on the direction of the axis L of each mounting hole 23, magnetic sensor element 13 is positioned (positioning process).In this example, the position of the lower surface 335a of the lower surface 333a of the 2nd teat 333 of iron core 33 and the 4th teat 335 is positioned, so that it is configured in the assigned position on the direction of axis L of each mounting hole 23 with respect to grinding reference field 26.
If each magnetic sensor element 13 is positioned on the direction of axis L of mounting hole 23, then makes magnetic sensor device 8 become following state: the upper surface 332a of the 1st teat 332 of iron core 33, the upper surface 334a of the 3rd teat 334 are that the upper surface 21 of framework 20 is more than the gauge of the outstanding wear plate 19 in top (with reference to Figure 11 (b)) from open upper end (the 1st opening) 23a of each mounting hole 23.
Afterwards, the wear plate 19 of 2 rectangles to be being inserted into the inboard of the flange part 24 of framework 20 under the state that separates specified gap on the medium direction of transfer X, thereby is placed on the upper surface 21 of framework 20 (wear plate arrangement step).In addition, the gap through 2 wear plate 19 is filled into resin 29 in each mounting hole 23, and thus, each magnetic sensor element 13 is fixed in framework 20 (fixedly operation) with each wear plate 19.Here, potting resin 29 is till the top of the flange part that projects to framework 20 24.This state is the state shown in Figure 11 (b).
Then; Grinding reference field 26 with framework 20 is a benchmark; To the upper surface 19a of the upper surface 332a of the 1st teat 332 of iron core 33, the upper surface 334a of the 3rd teat 334,2 wear plate 19 and between 2 wear plate 19 outstanding resin 29 carry out plane lapping, be ground to (plane lapping operation) till the predefined plane lapping face B always.Utilize this plane lapping, the upper surface 332a (sensor cover 13a) of the 1st teat 332 of these iron cores 33, the upper surface 334a of the 3rd teat 334, the upper surface 19a of 2 wear plate 19 and the upper surface of resin 29 are positioned on the same plane.
Then, conductive member 41 is installed on the lower surface 22 of framework 20, makes the fore-end 411a of the portion that sets up 411 of conductive member 41 become the state that the exposed portions serve 32a with sensor unshakable in one's determination 32 connects.Thus, the assembling of magnetic sensor device 8 is accomplished.
In addition, afterwards, magnetic sensor device 8 is inserted into the inboard of the groove 52 of housing 10, becomes the contact site 413 that makes conductive member 41 and the contacted state of inner peripheral surface part 52a of groove 52.Then, through with housing 10 ground connection, with the sensor of magnetic sensor element 13 32 ground connection unshakable in one's determination.
(magnetic pattern of magnetic pattern detecting apparatus detects action)
With reference to Fig. 4, Fig. 8 and Figure 12, the magnetic pattern of magnetic pattern detecting apparatus 1 is detected action describe.Figure 12 (a) is the excitation waveform of magnetic sensor element 13, and Figure 12 (b) is the detection waveform from magnetic sensor element 13.As shown in Figure 4, in magnetic pattern detecting apparatus 1, if along the 1st direction X1 or the 2nd direction X2 transmission medium 2 on medium transfer path 3, then medium 2 was magnetized with magnet 7 with magnet 6 or the 2nd magnetization by the 1st magnetization before arrival magnetic reads position A.Then, the medium 2 after being magnetized reads position A through the magnetic of magnetic sensor device 8.
In magnetic sensor device 8, shown in Figure 12 (a), field coil 34 is applied exchange current with steady current, around iron core 33, form the bias magnetic field of representing with dot-and-dash line among Fig. 8.If medium 2 is sent to magnetic and reads position A, then export the signal of the detection waveform shown in Figure 12 (b) from magnetic test coil 35.Detection waveform becomes the differential signal to bias magnetic field and time.
Here, change from shape, peak value and the valley of the detection waveform of magnetic sensor element 13 kind, the position of magnetic pattern and the depth of formed magnetic pattern because of the magnetic ink that is used to form magnetic pattern.Thereby, through relevant detection waveform and the reference waveform that storage in advance keeps are contrasted, can judge the true and false of medium 2 and differentiate the kind of medium 2.
(action effect)
According to this example; Adopt following structure: ground wire is not directly welded in sensor unshakable in one's determination 32; But from framework 20 1 sides that keep magnetic sensor element 13 conductive member 41 is pressed on magnetic sensor element 13, and in framework 20 1 sides with these conductive member 41 ground connection.Thereby, can be with sensor 32 ground connection unshakable in one's determination, and do not formed the restriction of the material of sensor unshakable in one's determination 32.
Promptly; Though sensor unshakable in one's determination 32 is formed by ferrite, silicon steel plate, noncrystalline, permalloy etc. sometimes; But ferrite can't add the scolder that is used to connect ground wire, and silicon steel plate generally forms anti-oxidation epithelium through electroplating, and therefore is difficult to the additional scolder that is used to connect ground wire.In addition, the weldability of noncrystalline, permalloy is relatively poor, in order to connect ground wire, the special device that need in the deoxidation environment, weld, operability reduction.But,,, with sensor iron core 32 ground connection the time, can avoid sensor unshakable in one's determination 32 is welded for each such material according to this example.Thereby, can be with sensor 32 ground connection unshakable in one's determination, and do not formed the restriction of the material of sensor unshakable in one's determination 32.In addition, owing to when ground connection, can avoid sensor unshakable in one's determination 32 is exposed under the high temperature, therefore, the shape of sensor unshakable in one's determination 32 is changed or magnetic properties decline.
In addition; According to this example; Make the portion that sets up 411 of conductive member 41 between framework 20 and sensor unshakable in one's determination 32, produce elastic deformation; Thereby the fore-end 411a of the sensor that sets up portion 411 32 sides unshakable in one's determination is pressed on the sensor unshakable in one's determination 32 because of the elastic restoring force of the portion of setting up 411, thereby presses on sensor iron core 32.Thereby conductive member 41 and sensor unshakable in one's determination 32 contacts reliably, even under the situation that magnetic sensor device 8 changes in the position on the framework 20, also can keep contacting of conductive member 41 and sensor iron core 32.
In addition, according to this example, conductive member 41 is metal spring members, thereby makes the portion of setting up 411 that elastic deformation takes place easily, becomes the state that is pressed on the sensor unshakable in one's determination 32.
In addition, in this example, because conductive member 41 comprises a plurality of portions 411 that set up, therefore, a plurality of magnetic sensor element 13 that can will be loaded into framework 20 are come ground connection through a conductive member 41.
In addition, conductive member 41 is installed on framework 20, therefore, carries out conductive member 41 is installed on the operation of framework 20 easily because the engaging protrusion 27 of connecting hole 412c through making installation portion 412 and framework 20 fastens.
In addition, owing to conductive member 41 pressed on the housing 10 of electric conductivity of the outer peripheral face part of cover framework 20, therefore, and through with housing 10 ground connection, can be with sensor 32 ground connection unshakable in one's determination.Thereby, the operability of sensor 32 ground connection unshakable in one's determination is good.
In addition,, utilize plane lapping, the sensor cover 13a of each magnetic sensor element 13 is positioned on the same plane according to this example.In addition; Because being based on respect to the location of framework 20, magnetic sensor element 13 its sensor cover 13a carried out the grinding reference field 26 of the framework 20 of plane lapping carries out; Therefore; Do not receive the restriction of the dimensional tolerence of framework 20, can the position of sensor cover 13a be defined as the assigned position with respect to the grinding reference field 26 of framework 20, sensor cover 13a does not have deviation with respect to the position of framework 20.Thereby, when magnetic sensor device 8 is loaded into magnetic pattern detecting apparatus 1, can avoid or reduce the gap change between medium transmission plane 11a and the magnetic sensor element 13, can also reduce the characteristic deviation between the magnetic sensor element 13.
In addition, in this example, configuration wear plate 19 on the upper surface 21 of framework 20, and be benchmark to grind reference field 26, sensor cover 13a is carried out plane lapping with the surface of wear plate 19.Thereby, can utilize wear plate 19 surround magnetic sensor element 13 sensor cover 13a around and protect.In addition, because the upper surface 19a of wear plate 19 and the sensor cover 13a of each magnetic sensor element 13 are positioned on the same plane, therefore, can utilize wear plate 19 to reduce the wearing and tearing of sensor cover 13a.
In addition; In this example; Because after the sensor cover 13a that makes each magnetic sensor element 13 is more than the gauge of the outstanding wear plate 19 of the open upper end 23a of mounting hole 23, the upper surface 19a of sensor cover 13a and wear plate 19 is carried out plane lapping together, therefore; Behind plane lapping, sensor cover 13a is exposed.
(other embodiments)
Figure 13 is the partial sectional view of the magnetic sensor device 8A of variation.In above-mentioned example; Though the top of lower end of the 2nd teat 333 and the 4th teat 335 that the lower surface part 22a of the framework 20 of conductive member 41 is positioned at the iron core 33 of magnetic sensor element 13 is installed; Even but be positioned at the lower surface of framework 20 part 22a magnetic sensor element 13 iron core 33 the 2nd teat 333 and the 4th teat 335 the lower end below, also can form the status of electrically connecting of conductive member 41 and sensor unshakable in one's determination 32.In the case; Shown in figure 13; Make the portion of setting up 411 between framework 20 and the sensor unshakable in one's determination 32 to above produce elastic deformation, thereby the fore-end 411a that sets up sensor 32 sides unshakable in one's determination of portion 411 presses on the exposed portions serve 32a of the 4th teat 335 of sensor unshakable in one's determination 32 because of this elastic restoring force of setting up portion 411.
In addition, in above-mentioned example,, also can form conductive member 41 by electroconductive resin though conductive member 41 is metal.
In addition, in above-mentioned example,, also can omit wear plate 19 though magnetic sensor device 8 comprises wear plate 19.
In addition; In above-mentioned example; Though after the state on the direction that forms the axis L that magnetic sensor element 13 is positioned at mounting hole 23; Wear plate 19 is positioned over framework 20, but also can be after wear plate 19 is positioned over framework 20, magnetic sensor element 13 is positioned on the direction of axis L of mounting hole 23.
Label declaration
8 magnetic sensor devices
10 housings
13 magnetic sensor element (the 1st magnetic sensor element, the 2nd magnetic sensor element)
The 13a sensor cover
19 wear plate
20 frameworks
23 mounting holes
23a open upper end (the 1st opening)
23c inner peripheral surface part
26 grind reference field
27 engaging protrusion
29 resins
32 sensors are unshakable in one's determination
41 conductive members
411 set up portion's (the 1st sets up portion, the 2nd sets up portion)
The fore-end of 411a sensor core side (end parts of sensor core side)
412 installation portions
The 412c connecting hole
413 contact sites
Claims (20)
1. magnetic sensor device, this magnetic sensor device comprise having sensor magnetic sensor element unshakable in one's determination and to the framework that magnetic sensor element keeps, it is characterized in that,
Comprise the conductive member that is installed on said framework,
Said conductive member has the portion of setting up, and this sets up portion and is located at said magnetic sensor element from said framework one bogie side frame, and it is unshakable in one's determination in said sensor to be pressed, and forms and this sensor state that is electrically connected unshakable in one's determination,
Through with said conductive member on said framework one side joint ground, thereby with said sensor iron core grounding.
2. magnetic sensor device as claimed in claim 1 is characterized in that,
Make the said portion that sets up between said framework and said sensor iron core, elastic deformation take place,
The said end of leaning on said sensor core side of setting up portion is pressed on the said sensor iron core because of this elastic restoring force of setting up portion.
3. magnetic sensor device as claimed in claim 2 is characterized in that,
Said conductive member is metal spring member.
4. magnetic sensor device as claimed in claim 3 is characterized in that,
Said conductive member is formed by a sheet metal.
5. magnetic sensor device as claimed in claim 1 is characterized in that,
Comprise the 1st magnetic sensor element and the 2nd magnetic sensor element, with as said magnetic sensor element,
Said conductive member comprise be set up in said the 1st magnetic sensor element and be pressed in the said sensor of the 1st magnetic sensor element unshakable in one's determination the 1st set up portion and be set up in said the 2nd magnetic sensor element and be pressed in the said sensor of the 2nd magnetic sensor element unshakable in one's determination the 2nd set up portion, with as the said portion that sets up.
6. magnetic sensor device as claimed in claim 1 is characterized in that,
Said framework comprises engaging protrusion,
Said conductive member comprises installation portion, and this installation portion is used for being connected with a said end that leans on said frame side that sets up portion, so that this conductive member is installed on said framework,
Be formed with the connecting hole that can engage at said installation portion with said engaging protrusion,
Through said engaging protrusion is engaged with said connecting hole, thereby said conductive member is installed on said framework.
7. magnetic sensor device as claimed in claim 1 is characterized in that,
Comprise the housing that covers the electric conductivity on the said framework,
Said conductive member comprises contact site, and this contact site extends along the direction away from said framework, and is pressed in the inner peripheral surface part of said housing,
Through with said frame ground, thereby with said sensor iron core grounding.
8. magnetic sensor device as claimed in claim 6 is characterized in that,
Said installation portion comprises fixed width part and the width wide cut part wideer than said fixed width part that is connected continuously with a said end that leans on said frame side that sets up portion,
Said connecting hole is formed at said wide cut part.
9. magnetic sensor device as claimed in claim 1 is characterized in that,
Said magnetic sensor element comprises iron core, the 1st fender that this iron core is unshakable in one's determination by said sensor, cover a said sensor side unshakable in one's determination, and the 2nd fender that covers said sensor opposite side unshakable in one's determination constitute,
Said sensor iron core comprises an exposed portions serve that fender exposes from said the 1st fender and the 2nd fender at least,
The said portion of setting up is pressed in said exposed portions serve.
10. magnetic sensor device as claimed in claim 9 is characterized in that,
Whole of the surface of the opposite side that said sensor is unshakable in one's determination covered by said the 2nd fender,
The part on the surface of the side that said sensor is unshakable in one's determination is covered by said the 1st fender, and the part that is not covered by said the 1st fender is said exposed portions serve.
11. magnetic sensor device as claimed in claim 9 is characterized in that,
An end face of said iron core is a sensor cover, and said exposed portions serve is formed on another end face of the opposition side that is positioned at said sensor cover of said iron core.
12. the manufacturing approach of a magnetic sensor device, this magnetic sensor device is loaded into framework with a plurality of magnetic sensor element, it is characterized in that, comprises:
The framework preparatory process, in this framework preparatory process, as said framework, prepare to be formed with from a side of this framework penetrate into opposite side a plurality of parallel mounting hole and with the framework of the grinding reference field of the axis quadrature of each mounting hole;
Insert operation, this insertion operation is respectively inserted each mounting hole with each magnetic sensor element at the sensor cover of each magnetic sensor element under the state of a side;
Positioning process, this positioning process is a benchmark with said grinding reference field, on the direction of the axis of said mounting hole, said magnetic sensor element is positioned, and makes said sensor cover outstanding from the 1st opening of a side of said mounting hole;
Fixing operation, each mounting hole potting resin of this regular worker's ordered pair is fixed in said framework with each magnetic sensor element; And
The plane lapping operation, this plane lapping operation is a benchmark with said grinding reference field, and said sensor cover is carried out plane lapping.
13. the manufacturing approach of magnetic sensor device as claimed in claim 12 is characterized in that,
In said insertion operation, the inner peripheral surface of said magnetic sensor element and said mounting hole is partly connected, with the direction of the axis quadrature of said mounting hole on said magnetic sensor element is positioned.
14. the manufacturing approach of magnetic sensor device as claimed in claim 13 is characterized in that,
In said insertion operation and said fixedly between the operation, being included in exposing of said framework has the wear plate arrangement step of the end face configuration wear plate of said the 1st opening,
In said fixedly operation, utilize said resin that said wear plate is fixed in said framework,
In the plane lapping operation, be benchmark with said grinding reference field, said sensor cover is carried out plane lapping with the surface of said anti-abrasive sheet.
15. the manufacturing approach of magnetic sensor device as claimed in claim 14 is characterized in that,
In said positioning process, make said sensor cover from more than the gauge of the outstanding said wear plate of the 1st opening of said mounting hole.
16. the manufacturing approach of magnetic sensor device as claimed in claim 14 is characterized in that,
In said plane lapping operation; Said resin is carried out plane lapping with the surface of said sensor cover, said wear plate, make the upper surface of said sensor cover, said wear plate the upper surface, and the upper surface of said resin be positioned on the same plane.
17. a magnetic sensor device, this magnetic sensor device is loaded into framework with a plurality of magnetic sensor element, it is characterized in that,
Said framework comprise from a side of this framework penetrate into opposite side a plurality of parallel mounting hole and with the grinding reference field of the axis quadrature of each mounting hole,
Each magnetic sensor element is inserted each mounting hole with sensor cover towards the state of a side; With said grinding reference field is benchmark; Be positioned in and make said sensor cover from the outstanding state of the 1st opening of a side of said mounting hole; And utilize the resin that is filled in the said mounting hole to fix in said framework
Through being benchmark with said grinding reference field, said sensor cover is carried out plane lapping, make the sensor cover of each magnetic sensor element be positioned on the same plane.
18. magnetic sensor device as claimed in claim 17 is characterized in that,
The inner peripheral surface of each magnetic sensor element and each mounting hole partly connects, thus with the direction of the axis quadrature of this mounting hole on position.
19. magnetic sensor device as claimed in claim 17 is characterized in that,
Comprise wear plate, this wear plate is placed on the end face of said the 1st opening of exposing of said framework, and utilizes said resin to be fixed in said framework,
Through being benchmark, plane lapping is carried out with said sensor cover in the surface of said wear plate, thereby make said wear plate and said sensor cover be positioned on the same plane with said grinding reference field.
20. magnetic sensor device as claimed in claim 19 is characterized in that,
Through being benchmark with said grinding reference field; To the surface of the surface of said wear plate, said sensor cover, and the upper surface of said resin carry out plane lapping, make the upper surface of said wear plate, said sensor cover the upper surface, and the upper surface of said resin be positioned on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768270.7A CN104408812B (en) | 2010-12-28 | 2011-12-27 | Magnetic sensor device and method for manufacturing magnetic sensor device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-291483 | 2010-12-28 | ||
| JP2010291483A JP5613554B2 (en) | 2010-12-28 | 2010-12-28 | Magnetic sensor device |
| JP2010-291484 | 2010-12-28 | ||
| JP2010291484A JP5666897B2 (en) | 2010-12-28 | 2010-12-28 | Multi-channel magnetic sensor device manufacturing method and multi-channel magnetic sensor device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410768270.7A Division CN104408812B (en) | 2010-12-28 | 2011-12-27 | Magnetic sensor device and method for manufacturing magnetic sensor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102592349A true CN102592349A (en) | 2012-07-18 |
| CN102592349B CN102592349B (en) | 2015-05-20 |
Family
ID=46480931
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410768270.7A Expired - Fee Related CN104408812B (en) | 2010-12-28 | 2011-12-27 | Magnetic sensor device and method for manufacturing magnetic sensor device |
| CN201110445303.0A Expired - Fee Related CN102592349B (en) | 2010-12-28 | 2011-12-27 | Magnetic sensor device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410768270.7A Expired - Fee Related CN104408812B (en) | 2010-12-28 | 2011-12-27 | Magnetic sensor device and method for manufacturing magnetic sensor device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101564126B1 (en) |
| CN (2) | CN104408812B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839319A (en) * | 2012-11-26 | 2014-06-04 | 日本电产三协株式会社 | Magnetic sensor |
| CN103971444A (en) * | 2013-01-29 | 2014-08-06 | 北京嘉岳同乐极电子有限公司 | Magnetic sensor for magnetic detection |
| CN105074785A (en) * | 2013-04-03 | 2015-11-18 | 德国捷德有限公司 | Inspection of security elements provided with magnetic materials |
| CN106462764A (en) * | 2013-12-23 | 2017-02-22 | 深圳普赢创新科技股份有限公司 | Device and method for decoding magnetic patterns |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016206069A (en) * | 2015-04-24 | 2016-12-08 | 日本電産サンキョー株式会社 | Magnetic sensor device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875797A (en) * | 1994-09-05 | 1996-03-22 | Fuji Elelctrochem Co Ltd | Current detector |
| CN2436938Y (en) * | 2000-07-28 | 2001-06-27 | 深圳粤宝电子工业总公司 | Flat magnetism probe with fail check area |
| US6611137B2 (en) * | 1999-09-28 | 2003-08-26 | Steven T. Haensgen | Hall effect current sensor system packaging |
| CN101248351A (en) * | 2005-08-31 | 2008-08-20 | 日本电产三协株式会社 | Magnetic sensor device, method for manufacturing magnetic sensor device and sheet discriminating device |
| WO2009151011A1 (en) * | 2008-06-10 | 2009-12-17 | 株式会社タムラ製作所 | Current sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11167655A (en) * | 1997-12-04 | 1999-06-22 | Sankyo Seiki Mfg Co Ltd | Sensor for detecting surface shape |
| JP3498737B2 (en) * | 2001-01-24 | 2004-02-16 | ヤマハ株式会社 | Manufacturing method of magnetic sensor |
| JP4151665B2 (en) * | 2005-03-25 | 2008-09-17 | ヤマハ株式会社 | Method for manufacturing physical quantity sensor and lead frame |
| JP2008270471A (en) * | 2007-04-19 | 2008-11-06 | Yamaha Corp | Magnetic sensor and its manufacturing method |
-
2011
- 2011-12-22 KR KR1020110140571A patent/KR101564126B1/en not_active IP Right Cessation
- 2011-12-27 CN CN201410768270.7A patent/CN104408812B/en not_active Expired - Fee Related
- 2011-12-27 CN CN201110445303.0A patent/CN102592349B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875797A (en) * | 1994-09-05 | 1996-03-22 | Fuji Elelctrochem Co Ltd | Current detector |
| US6611137B2 (en) * | 1999-09-28 | 2003-08-26 | Steven T. Haensgen | Hall effect current sensor system packaging |
| CN2436938Y (en) * | 2000-07-28 | 2001-06-27 | 深圳粤宝电子工业总公司 | Flat magnetism probe with fail check area |
| CN101248351A (en) * | 2005-08-31 | 2008-08-20 | 日本电产三协株式会社 | Magnetic sensor device, method for manufacturing magnetic sensor device and sheet discriminating device |
| WO2009151011A1 (en) * | 2008-06-10 | 2009-12-17 | 株式会社タムラ製作所 | Current sensor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839319A (en) * | 2012-11-26 | 2014-06-04 | 日本电产三协株式会社 | Magnetic sensor |
| CN103839319B (en) * | 2012-11-26 | 2016-08-17 | 日本电产三协株式会社 | Magnetic sensor device |
| CN103971444A (en) * | 2013-01-29 | 2014-08-06 | 北京嘉岳同乐极电子有限公司 | Magnetic sensor for magnetic detection |
| CN105074785A (en) * | 2013-04-03 | 2015-11-18 | 德国捷德有限公司 | Inspection of security elements provided with magnetic materials |
| CN105074785B (en) * | 2013-04-03 | 2018-08-28 | 捷德货币技术有限责任公司 | Equip the inspection of the Security element of magnetic material |
| CN106462764A (en) * | 2013-12-23 | 2017-02-22 | 深圳普赢创新科技股份有限公司 | Device and method for decoding magnetic patterns |
| US10540560B2 (en) | 2013-12-23 | 2020-01-21 | Shenzhen Pu Ying Innovation Technology Corporation Limited | Device and method for decoding magnetic patterns |
| CN106462764B (en) * | 2013-12-23 | 2020-03-31 | 深圳普赢创新科技股份有限公司 | Apparatus and method for decoding magnetic pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101564126B1 (en) | 2015-10-28 |
| CN102592349B (en) | 2015-05-20 |
| CN104408812B (en) | 2017-04-12 |
| CN104408812A (en) | 2015-03-11 |
| KR20120075383A (en) | 2012-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102592349B (en) | Magnetic sensor device | |
| CN102798333A (en) | Sensor and method for producing the sensor | |
| CN103177500B (en) | Magnetic sensor device | |
| CN102968845A (en) | Magnetic-bias currency detecting magnetic head with sensitive direction parallel to detection face | |
| CN103003711A (en) | Magnetic sensor device | |
| EP2834773B1 (en) | Method for testing radio-frequency tags | |
| CN102483445A (en) | Magnetic field sensor and method for producing a magnetic field sensor | |
| CN102610021B (en) | Magnetic sensor unit | |
| CN101248351B (en) | Magnetic sensor device, method for manufacturing magnetic sensor device and sheet discriminating device | |
| CN205159303U (en) | Magnetic detection apparatus | |
| WO2018097055A1 (en) | Magnetic head for paper currency identification | |
| CN103839319B (en) | Magnetic sensor device | |
| CN104903938A (en) | Measuring device for measuring magnetic properties of surroundings of measuring device | |
| KR101826448B1 (en) | Device for identifying coin-shaped bodies to be detected | |
| JP5613554B2 (en) | Magnetic sensor device | |
| JP5666897B2 (en) | Multi-channel magnetic sensor device manufacturing method and multi-channel magnetic sensor device | |
| JP2007322176A (en) | Magnetic flaw detector and leakage magnetic sensor | |
| WO2017208753A1 (en) | Magnetic sensor device | |
| JP5912479B2 (en) | Magnetic sensor device | |
| JP2016048250A (en) | Magnetic sensor element | |
| WO2014192378A1 (en) | Apparatus for identifying coin-shaped detection object | |
| JP2016040551A (en) | Magnetic sensor device | |
| JP2014233331A (en) | Apparatus for identifying coin-shaped detection object |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20201227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |