CN106231882B - Magnetic Sheets and Electronic Instruments - Google Patents
Magnetic Sheets and Electronic Instruments Download PDFInfo
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- CN106231882B CN106231882B CN201610605579.3A CN201610605579A CN106231882B CN 106231882 B CN106231882 B CN 106231882B CN 201610605579 A CN201610605579 A CN 201610605579A CN 106231882 B CN106231882 B CN 106231882B
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- 206010068051 Chimerism Diseases 0.000 description 2
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- 239000000945 filler Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
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- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0043—Casings being flexible containers, e.g. pouch, pocket, bag
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Hard Magnetic Materials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Soft Magnetic Materials (AREA)
- Regulation Of General Use Transformers (AREA)
- Magnetic Treatment Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides magnetic sheet and electronic instrument.Project: even if the present invention is to provide a kind of bending, magnetic characteristic deterioration degree also lesser magnetic sheet and its manufacturing method and is equipped with for the purpose of the electronic instrument of the magnetic sheet.Summary of the invention: magnetic sheet (100) is characterized by the condition that multiple magnetic (20,21) pieces are arranged in planar, and meet following (A) and (B).(A) face contact each other between the end face (30,31) of adjacent magnetic piece (20,21).(B) adjacent magnetic piece (20,21) is configured on the position of staggeredly split along the extending direction of the above-mentioned end face (30,31) of face contact.
Description
The application be the applying date be on 08 12nd, 2013, entitled " magnetic sheet, electronic instrument and magnetic sheet
Manufacturing method ", application No. is the divisional applications of 201310349554.8 Chinese invention patent application.
Technical field
The present invention relates to one kind as multiple magnetic pieces in magnetic sheet be arranged planarly made of, comprising this
The electronic instrument of magnetic sheet and the manufacturing method of magnetic sheet.
Background technique
From improving non-contact feed instrument or radiated noise absorber, the slimming of various electronic instruments such as communication antenna with
The needs of handlability set out, it is desirable that magnetic sheet that is a kind of relatively thin and having bendable folding endurance.
About this technology, a kind of magnetic sheet is disclosed in patent document 1, by the ferrite for being pasted onto backing
Sintering briquette thin plate is extended and is allowed to be broken, to be allowed to be partitioned into the single sheet body of tile-like, and between single sheet body
Gap in potting resin.Can be obtained by as a result, to be controlled the value of Effective permeability thin in the larger context
Type magnetic sheet.
Cited literature 2:
Patent document:
1 Japanese Patent Laid-Open 2011-233740 bulletin of patent document
Summary of the invention
Technical problem
However, the magnetic sheet of patent document 1, when magnetic sheet bends, due to the gap between single sheet body, institute
The problem of magnetic characteristic deteriorates can occur.Fig. 8 is the figure for showing the project mode of magnetic sheet 200 of patent document 1.Fig. 8's
(a) show that magnetic sheet 200 is flat state, (b) of figure 8 shows the curved state of magnetic sheet 200.It is magnetic thin
Plate 200 has been arranged made of the single sheet body of tile-like (magnetic piece 220,221) on backing 210.Such as Fig. 8
(a) shown in, when backing 210 is flat condition, the end face 230,231 of adjacent magnetic piece 220,221 or it is mutually
Face contact is close to each other and vis-a-vis.As shown in (b) of Fig. 8, if backing 210 be bent if, magnetic piece 220,
On 221 boundary positions, backing 210 generates extension, will generate gap 240 between end face 230,231.Specifically, end face 230,
In 231, gap 240 can be generated close to the side (in figure, lower section) of backing 210, the top edge of end face 230,231 connects for line
Touching.Therefore, the connection status of magnetic piece 220,221 becomes very unstable.
Here, gap 240 is generated between adjacent magnetic piece 220,221, and loses surface contact state, and made magnetic thin
200 magnetic circuit of plate is disconnected, and reduces the performance for capturing magnetic flux.Therefore, the magnetic sheet 200 of patent document 1 has because of bending
And it generates, the problem of unpredictable magnetic characteristic deteriorates.
The present invention exactly makes in view of the above subject, though to provide a kind of bending, magnetic characteristic deterioration degree also compared with
Few magnetic sheet and its manufacturing method, and be equipped with for the purpose of the electronic instrument of the magnetic sheet.
Solution
By the invention it is possible to provide it is a kind of as multiple magnetic pieces in made of planar be arranged, and meet with
Under the magnetic sheet that is characterized of the condition of (A) and (B).
(A) face contact each other between the end face of adjacent above-mentioned magnetic piece.
(B) adjacent above-mentioned magnetic piece is configured in from each other along the extending direction of the above-mentioned end face of face contact
Staggeredly on the position of split.
By foregoing invention, towards when above-mentioned extending direction bending, adjacent magnetic piece will be kept magnetic sheet
Face contact, and opposite can turn round, so the physical contact of magnetic piece can be maintained.Therefore, at least prolong for above-mentioned
For the bending for stretching direction, the magnetic characteristic of magnetic sheet can be steadily maintained.
In addition, by the invention it is possible to provide it is a kind of including above-mentioned magnetic sheet, the thickness direction of above-mentioned magnetic sheet
As the coil in spool direction, and the electronic instrument of the circuit substrate to above-mentioned coil offer alternating current.
It is about multiple magnetic spellings in addition, through the invention, a kind of manufacturing method of magnetic sheet can also be provided
Block is in the planar manufacturing method for being arranged into magnetic sheet, has multiple above-mentioned magnetism of mutually the same shape including making
The step of piece, multiple above-mentioned magnetic pieces in the way of being face contact between end face, and along the extension of above-mentioned end face
Direction, the step being configured on the position for the split that intermeshes, and cut above-mentioned magnetic piece and make above-mentioned magnetic sheet week
The step of edge.
Invention beneficial effect
Even if being bent by the invention it is possible to provide one kind, magnetic characteristic deteriorates also less magnetic sheet and its manufacture
Method, and contain the electronic instrument of this magnetic sheet.Thus, it is possible to improve the electronic instrument comprising the magnetic sheet
It is thinned, repeatedly durability, applicability etc..
Detailed description of the invention
(a) of Fig. 1 is the plane model figure for indicating the magnetic sheet 100 of first embodiment, is (b) enlarged drawing of (a).
(a) of Fig. 2 is the perspective view of magnetic piece, is (b) enlarged drawing near protrusion.
(a) of Fig. 3 is the three-dimensional pattern figure for indicating the chimerism of recess portion and protrusion, is (b) to indicate that magnetic sheet is bent
To the three-dimensional pattern figure of the state of X-direction, (c) be (a) top view.
In Fig. 4 (a) be indicate make be bent the changed situation of angle under, the magnetic sheet of first embodiment it is effective
The chart of the analog result of magnetic conductivity is indicated in the case where making to be bent the changed situation of angle, existing magnetic sheet
The chart of the analog result of Effective permeability.
Fig. 5 is the top view for having cut the electronic instrument after a part.
Fig. 6 is the plane model figure for indicating the middle cutting step of manufacturing method of magnetic sheet.
(a) of Fig. 7 is the plane model figure for indicating the magnetic sheet of second embodiment, is (b) explanation for indicating piece group
Figure.
(a) of Fig. 8 is the ideograph indicated when existing magnetic sheet is flat condition, is (b) to indicate existing magnetism
The ideograph of thin plate in the bent state.
Label declaration
10: bonding thin plate, 20~22: magnetic piece, 24: supplement piece, 30~33: end face, 34: long side, 35: short side,
40: recess portion, 41: most deep edge, 42: central portion, 44: extension portion, 45: front edge, 50: protrusion, 51: front edge, 60: side
Frame part, 70: piece group, 80~83: side, 100: magnetic sheet, 120: electronic instrument, 130: protection thin plate, 140: coil,
150: circuit substrate, 152: current feed terminal, 154: wiring, 200: magnetic sheet, 210: backing, 220,221: magnetic sheet,
230,231: end face, 240: gap, θ: bending angle, μ e: Effective permeability, CL: cutting line, L1, L2: line segment
Specific embodiment
Hereinafter, will be illustrated with reference to the accompanying drawings to the embodiment of the present invention.In addition, in whole attached drawings, same structure
Same symbol is paid at element, and repeat description is suitably omitted.
The case where defining up and down direction in the present embodiment, and being illustrated, but, this is intended merely to more easily say
The relative positional relationship of bright constituent element and the regulation done are not intended to limit product according to the present invention during fabrication or when using
Direction.In addition, the so-called plane or planar in the present invention, it is meant that substantially it is considered that being flat shape, and simultaneously
Not needing it is the complete plane in geometry meaning.
< first embodiment >
(a) of Fig. 1 is the plane model figure for indicating the magnetic sheet 100 of the first embodiment of the present invention.(b) of Fig. 1 be
The enlarged drawing of figure 1 (a).(a) of Fig. 1 and (b) in, the left and right directions in figure is called X-direction, similarly up and down direction is known as
Y-direction.(a) of Fig. 2 is the perspective view of magnetic piece 20.(b) of Fig. 2 is near the protrusion 50 in magnetic piece 20~22
Enlarged drawing.In each figure of Fig. 1, for ease of description, has hatching on magnetic piece 20~22.
Firstly, being illustrated with regard to the summary of the magnetic sheet 100 of the present embodiment.
Magnetic sheet 100, be arranged by multiple magnetic pieces 20,21 in planar, and with meet simultaneously with
Under the condition of (A) and (B) be characterized.
(A) end face 30 of adjacent magnetic piece 20 and the end face 31 of magnetic piece 21 are face contact from each other.
(B) adjacent magnetic piece 20 and 21, along the extending direction (X in each figure of Fig. 1 of the end face 30,31 of face contact
Direction) it is configured on the position for the split that intermeshes.
Magnetic piece 20 and 21, it is adjacent on the left and right directions (X-direction) of (a) of Fig. 1.Also, the magnetic of the present embodiment
In property thin plate 100, the up and down direction (Y-direction) of (a) of the magnetic piece 20 and 22 in Fig. 1 is also adjacent.That is, magnetism piece 20~
22, across two directions to intersect vertically, while meeting the condition of above-mentioned (A) and (B).
Secondly, the magnetic sheet 100 with regard to the present embodiment is described in detail.
Magnetic sheet 100 is all in lamellar, and at least one portion is the electronics member being made of magnetic piece 20~22
Part.The flat shape of magnetic sheet 100 is not particularly limited, and be can be circle and is also possible to rectangle (comprising square).This
100 flat shape of magnetic sheet of embodiment is rectangle, and four sides 80~83 are in X direction or Y-direction extends.
Magnetic piece 20~22 is sheet-like formed ferrite cemented body.As wherein an example, relative permeability (μ) is
100 or more 2000 or less.The Young's modulus of magnetic piece 20~22 can be 1 × 104 [N/mm2] or more as wherein an example.
The bending stiffness of magnetic piece 20~22, hence it is evident that the bending stiffness all higher than magnetic sheet 100 (may be, for example, 100 times with
On).Protective layer can also be set on magnetic 20~22 surface of piece.In addition, may be used also between adjacent magnetic piece 20~22
To fill inorganic or organic filler.It as filler, for example can be magnetic substance powder, or be mixed with the tree of magnetic substance powder
Rouge material.In addition, in the present embodiment, the end face of so-called magnetism piece is face contact, refer to the matrix or protective layer of the end face
Between other than the physical contact condition of plane, further include making physically to be connected between end face by filler
State together.
In magnetic sheet 100, also has on 20~22 surface of multiple magnetic pieces and adhere to and be fixed with bonding thin plate 10.It is viscous
Knot thin plate 10 is the backing of magnetic sheet 100.The tree such as the polyolefin for being mixed with Magnaglo or polyester can be used in bonding thin plate 10
The thin magnetic film of rouge material.Bond thin plate 10 Young's modulus it is lower than the Young's modulus of magnetic piece 20~22, preferably shorter than its
10%.The thickness of bonding thin plate 10 does not have particular provisions, but goes out from the viewpoint for the flexibility for improving magnetic sheet 100
It is 50% more preferable to be discontented with it for hair, the size of preferably smaller than magnetic 20~22 thickness of piece.It can also be to the table of bonding thin plate 10
Face applies bonding processing, and magnetic piece 20~22 is pasted on it.
Magnetic sheet 100, the bent rim member 60 including impaling magnetic 20~22 periphery of piece.Rim member 60
The soft resin material such as rubber can be used.The Young's modulus of rim member 60 is lower than the Young mould of magnetic piece 20~22
Amount.By the way that rim member 60 is arranged, magnetic piece 20~22 can be inhibited to deviate in the position of X-direction or Y-direction, moreover it is possible to physics
Protect magnetic piece 20~22 to property.Rim member 60 preferably seamlessly impales the configuration range of magnetic piece 20~22
The form of complete cycle edge, but, it is not limited to this.As long as being capable of fixing magnetic piece 20~22, can also be arranged by phased manner
Rim member 60.
The magnetic piece 20~22 of the present embodiment is the same shape each other.So-called the same shape refers to that size and form are practical
It is upper identical.Magnetic piece 20~22 is in flat plate, has central part 42, recess portion 40 and protrusion 50.Protrusion 50 is formed
It is prominent to 42 two sides of central part (X-direction in (a) of Fig. 2).Magnetic piece 20~22 has edge and 50 side of intersecting vertically of protrusion
To extension portion 44 outstanding.Recess portion 40 is in the gap of a pair of of extension portion 44 of X-direction arrangement.To Y-direction extension portion outstanding
44 protrusion length, and to the prominent equal length of X-direction protrusion 50 outstanding.Centered on central part 42, it is also formed in H
Shape is respectively to the two sides of Y-direction extension portion 44 outstanding.Therefore, magnetic piece 20~22 has and adds up to two pairs of extension portion 44.
In the present embodiment, the magnetic piece of 50 projected direction of protrusion towards X-direction is called the first magnetic piece 20.It connects
, the magnetic piece of 50 projected direction of protrusion towards Y-direction is known as the second magnetic piece 21.But sometimes for convenient for difference,
Also on the basis of the first magnetic piece 20, calling, there is the magnetism that the piece of the recess portion 40 mutually chimeric with its protrusion 50 is second to spell
Block 21, it is third magnetism piece 22 that calling, which has the piece of the protrusion 50 mutually chimeric with the recess portion 40 of the first magnetic piece 20,.
Magnetic piece 20~22 is respectively provided with recess portion 40 and protrusion 50.The protrusion 50 of magnetic piece 20, with adjacent other
40 phase of recess portion of magnetic piece 21,22 is chimeric.Using the projected direction in protrusion 50 as the end face 30 of extending direction, and recess portion
End face 32 of the recessed direction (Y-direction) as extending direction in 40, is mutually face contact.In the present embodiment, so-called magnetic spelling
The end face of block, in the outer surface for referring to magnetic piece, the vertical surface extended along the thickness direction of magnetic sheet, in other words,
Refer to a part of range of the peripheral edge surface of magnetic piece.End face can be flat plane, be also possible to as 50 front end of protrusion
Edge 51 equally implements chamfer machining and the curved surface that is formed.
First magnetic piece 20, the first end face 30 and second end face 32 to cross one another with extending direction.The present embodiment
In, first end face 30 extends towards X-direction, and second end face 32 extends towards the Y-direction to intersect vertically with this.First magnetic piece
20 second end face 32, it is corresponding with the second magnetic end face 31 of piece 21.In addition, the first end face of the first magnetic piece 20
30, it is corresponding with the end face 33 of third magnetism piece 22.
As shown in (b) of Fig. 1, the first end face 30 of the first magnetic piece 20, the end with the adjacent second magnetic piece 21
Face 31 is face contact mutually.And the first magnetic piece 20 and the second magnetic piece 21, along the extending direction of first end face 30
(X-direction) is configured on the position of interlaced split.It is and adjacent moreover, the second end face 32 of the first magnetic piece 20
The end face 33 of third magnetism piece 22 is face contact mutually.And the first magnetic piece 20 and third magnetism piece 22, are configured
On the position for intermeshing split along 32 extending direction of second end face (Y-direction).
Therefore, between the first magnetic piece 20 and the second magnetic piece 21, while the first magnetic piece 20 and third are magnetic
Between piece 22, meet the condition of above-mentioned (A) and (B) respectively.
Between the magnetic piece 20~22 of the present embodiment, with adjacent other 1 magnetic piece, by prolonging to X-direction
The end face stretched and in terms of two of the end face that Y-direction extends it is opposite.
Through this embodiment, no matter in magnetic sheet 100 towards in the curved situation of X-direction, being also directed towards Y-direction bending
In the case where, the end face 30~33 of adjacent magnetic piece 20~22 all maintains the state for face contact mutually, so magnetic is special
Property is also very stable.Here, so-called magnetic sheet 100 is bent towards X-direction, shown in (b) for referring to Fig. 3 as be described hereinafter, X-direction
Side raised with respect to the other side and be allowed to the case where being bent.It in other words, and is made using Y-direction as folding line or axle center
Magnetic sheet 100 is bent.In addition, in the present invention, especially difference does not use bending and warpage.
In the present embodiment, along defined direction between the magnetic piece 20~22 of so-called adjoining, intermesh split,
Refer to that the center of gravity of the magnetic piece 20~22 of the adjoining is located at the different location in the prescribed direction.Specifically, in X-direction neighbour
The position of centre of gravity of the magnetic piece 20 and 21 connect in the X direction is different.Also, adjacent 20 He of magnetic piece in the Y direction
22 position of centre of gravity in the Y direction is different.
As shown in (a) of Fig. 2, at least side at 50 front edge 51 of protrusion or the most deep edge 41 of recess portion 40 is fallen
Angle processing.Magnetic sheet 100 is formed as a result, and the side at this front edge 51 or most deep edge 41 and another is made in bending
One side is non-interference.Here, the most deep edge 41 of the front edge 51 and recess portion 40 of protrusion 50 is non-interference refers to, the two or
It is to be not in contact with each other, or it can be actually without frictionally swimmingly sliding.Specifically, as shown in (b) of Fig. 2, this implementation
The front edge 51 of protrusion 50 in example is processed to arc angling (R chamfering) in a thickness direction.Also, magnetic sheet 100
In a flattened condition, the most deep edge 41 of the front edge 51 and recess portion 40 of protrusion 50 is non-contact.Front edge 51 as a result,
Do not interference with most deep edge 41 not only, moreover, it is thin that front edge 51 will not also damage bonding when magnetic sheet 100 is bent
Plate 10 (referring to (b) of Fig. 3).
In the magnetic piece 20~22 of the present embodiment, the front edge 45 positioned at the extension portion 44 of 40 two sides of recess portion is also applied
With chamfering (R chamfering) processing.As a result, magnetic sheet 100 be bent when, the front edge 45 of extension portion 44, will not with it is adjacent
Other magnetic piece interferences.
In addition, forming the flat end 30 for being connected to the front edge 51 of protrusion 50, and end face 30 is in 50 breadth side of protrusion
No chamfering in (i.e. Y-direction) (referring to (b) of Fig. 2).End face 30 is equivalent to the side of the protrusion 50 of magnetic piece 20 as a result,
Face, and almost face contact is done in its end face 31 all with the inner surface for being equivalent to magnetic 21 recess portion 40 of piece.
(a) of Fig. 3 indicates the three-dimensional pattern figure of recess portion 40 and 50 chimerism of protrusion.The figure or magnetic sheet 100 are
The schematic diagram of flat condition.And omit diagram a part of in extension portion 44.(b) of Fig. 3 is to indicate magnetic sheet 100 to the side X
To the three-dimensional pattern figure of curved state.Bonding thin plate 10 is as raising the side (being right side in the figure) of X-direction
It is bent.(c) of Fig. 3 is the top view of Fig. 3 (a).
Under (a) of Fig. 3 and the flat condition (c) indicated, the end face 30 of 50 two sides of protrusion and the end face 31 of 40 two sides of recess portion
For face contact.That is, protrusion 50 and the breadth direction (Y-direction) of recess portion 40 is equal in magnitude.In addition, the front edge of extension portion 44
45 with magnetic piece 20 be it is non-contact, the front edge 51 of protrusion 50 and the most deep edge 41 of recess portion 40 are non-contact.
Magnetic piece 20 is turned round relative to magnetic piece 21 from flat condition to using Y-direction as axis and becomes Fig. 3
(b) as bending state.In the bent state, face contact is maintained between end face 30 and 31.That is, protrusion 50 and recess portion 40 are protected
Face contact is held, and is shaken as hinge.Formed bending angle is angle, θ between magnetic piece 21 and 20.So-called magnetism
Piece 20 and 21 refers to the contact surface (end perpendicular with surface (front edge 51 and most deep edge 41) mutually vis-a-vis
Face 30,31).Magnetic piece 20 and 21 opposite revolution in the surface of the end face 30,31 as a result, be bent magnetic sheet 100
When, magnetic piece 20 and 21 is able to maintain that surface contact state.
The contact area of end face 30 and 31 in its flat state can be less than contact area in the bent state.One
As, the contact area of magnetic piece 20 and 22 will not become the bottleneck of 100 magnetic characteristic of magnetic sheet.Therefore, as long as being spelled with magnetism
Block 20 and 22 maintains surface contact state, even if that contact area very little, 100 magnetic characteristic of magnetic sheet will not extremely deteriorate.
(a) of Fig. 4 is indicated under bending state shown in Fig. 3 (b), and bending angle θ is from 0 degree to 45 degree the case where variation
Under, the figure of the analog result of the Effective permeability μ e of magnetic sheet 100.The state of bending angle θ=0 degree is comparable to Fig. 3's
(a) flat condition shown in.(b) of Fig. 4 is to indicate bending angle θ under bending state shown in Fig. 8 (b) from 0 degree to 45
In the case where degree variation, the figure of the analog result of the Effective permeability μ e of existing magnetic sheet 200.In addition to recess portion 40 and protrusion
The presence or absence of 50, the condition of the size and relative permeability of magnetic piece 20,21 and magnetic piece 220,221 is all common.Separately
Outside, ignore bonding thin plate 10 and backing 210.
The magnetic sheet 100 of the present embodiment shown in (a) of Fig. 3, because of the front edge of the protrusion 50 of magnetic piece 20
51 and the front edge 45 of magnetic 21 extension portion 44 of piece be applied chamfer machining, so effective when bending angle θ=0 degree
Magnetic permeability μ e is about 900, only lower than the Effective permeability μ e (about 1050) of existing magnetic sheet 200.This is because existing
Some magnetic sheets 200 are all covered with backing on substantially all areas of magnetic piece 220,221 as shown in (a) of Fig. 8
210。
In contrast, the Effective permeability μ e of existing magnetic sheet 200 is anxious when bending angle θ becomes larger since 0 degree
Play is fallen.It is about 100 when specifically, being reduced to about 250, θ=30 degree when θ=10 degree.It is existing using flat condition as standard
About 10% when some magnetic sheets 200, whens θ=10 degree, fall to approximately 24%, θ=30 degree.
On the other hand, the magnetic sheet 100 of the present embodiment, when bending angle θ becomes larger since 0 degree, Effective permeability μ e
Reduction also very slowly.Specifically, can be clear that, when θ=10 degree, Effective permeability μ e is maintained at about 820,
It is about 550 when θ=30.Using flat condition as standard, the magnetic sheet 100 of the present embodiment, effective magnetic conductance at θ=10 degree
Rate μ e is about 61% when also having remained about 91%, θ=30 degree.
In this way, it will be clear that magnetic piece 20~22 is kept mutually in the magnetic sheet 100 of the present embodiment
Face contact, shaken as hinge, even if magnetic sheet 100 bends, magnetic characteristic will not occur significantly to deteriorate.
Therefore, its flexibility can be improved while maintaining 100 magnetic characteristic of magnetic sheet.
It returns (a) of Fig. 1, the first magnetic piece 20 is in seamlessly interconnected.Herein, it is contemplated that in magnetic piece
Extend any line segment L1, L2 ... (being illustrated by double dot dash line) in 20~22 orientations (x-direction and y-direction).These line segments
L1, L2 are the line segments to intersect vertically with the side 80~83 of magnetic sheet 100 in arbitrary position.Magnetism in the present embodiment is thin
Plate 100, on line segment L1, L2, at least one piece magnetic piece 20, and it is adjacent to other of this at least one piece magnetic piece 20
Magnetic piece 21 or 22, while meeting the condition of above-mentioned (A) and (B).Therefore, the magnetic sheet 100 of the present embodiment, either with
As folding line and when being allowed to be bent, the first magnetic piece 20 and second or third magnetism are spelled for any position in X-direction or Y-direction
Face contact can be maintained between block 21,22.The especially magnetic sheet 100 of the present embodiment, contains to x-direction and y-direction
The bending of plyability, so no matter magnetic sheet 100 can keep and adjacent magnetic piece 20 towards when any direction bending
The surface contact state of globality between~22.
The outer peripheral edge of the magnetic piece 20~22 positioned at 100 periphery of magnetic sheet can be made to be also formed as flat condition.By
This, can remove the protrusion 50 of the magnetic piece 20~22 of periphery.Furthermore it is possible in the recess portion 40 being open towards rim member 60
In, arbitrarily configure rectangular supplement piece 24.It can also use from the protrusion 50 that magnetic piece 20~22 is cut off as benefit
Fill piece 24.
<electronic instrument>
Fig. 5 is the top view for having cut away a part for indicating the electronic instrument 120 of the magnetic sheet 100 comprising the present embodiment
Figure.A part of the protection thin plate 130 on 120 surface layer of electronic instrument is cut to be illustrated.Dashed line indicates protection thin plate 130
Break line.
Electronic instrument 120 includes magnetic sheet 100, using the thickness direction of this magnetic sheet 100 as the coil in spool direction
140, and the circuit substrate 150 of alternating current is provided to coil 140.The electronic instrument 120 of the present embodiment is non-contact feed instrument
Device.
Multiple coils 140 are also configured on 100 surface of magnetic sheet, are configured to one or more layers.In this implementation
In the electronic instrument 120 of example, coil 140 is fixed on 100 surface of magnetic sheet.Circuit substrate 150 has current feed terminal 152,
With the wiring 154 of connection this current feed terminal 152 and coil 140.
Current feed terminal 152 is connected to external power supply (not shown), and to the logical upper alternating current of coil 140, coil 140 is just
Generate alternating magnetic field.Coil 140 is transmission of electricity coil.Here, magnetic sheet 100 captures and amplifies magnetic flux caused by coil 140.
It placed on 120 surface of electronic instrument and be electrically charged instrument (not shown) including receive electric power coil, this is electrically charged instrument quilt
Contactless charging.
As the deformation of the present embodiment, the driving machine of driving coil 140 can also be set along the surface of magnetic sheet 100
Structure (not shown), and relative to magnetic sheet 100, coil 140 is fluidly set.Control driving mechanism, moving coil 140 to
It is electrically charged the placement location of instrument, then electronic instrument 120 is not required to whole, and only needs locally to generate alternating magnetic field.
The magnetic sheet 100 of the present embodiment is also applied to spoke other than the non-contact feed instrument of above-mentioned example
It penetrates on the various electronic instruments such as noise absorbent body, communication antenna, loudspeaker.
<manufacturing method>
Hereinafter, will be to 100 manufacturing method of magnetic sheet (hereinafter, sometimes referred to as this method.) be illustrated.Fig. 6 is to indicate
The plane model figure of cutting step in the method.In the method, the second magnetic piece 21 and third magnetic are not distinguished specially
Property piece 22.In Fig. 6, for ease of description, hatching is paid on magnetic piece 20,21.
Firstly, the summary with regard to this method is illustrated.
This method is the manufacturer by multiple magnetic pieces 20,21 in magnetic sheet 100 made of planar be arranged
Method.This method includes piece making step, configuration step and cutting step.Piece making step is the multiple magnetic pieces of production
20,21 the step of.Configuration step is while making between end face 30,31 in face contact, in prolonging along these end faces 30~33
Direction is stretched to intermesh the step of configuring multiple magnetic piece 20,21 on split position.Cutting step is to cut magnetic piece 20
~22 come the step of making 100 peripheral part of magnetic sheet.
Hereinafter, more specifically describing this method.In the method, piece making step, configuration step and cutting step
Rapid implementation sequence and opportunity can arbitrarily change.The sequence of multiple steps can change in the range of content does not conflict,
In addition, overlap each other can also be with for part or all of the action opportunity of multiple steps.
It in piece making step, after being sintered magnetic sheet green compact, is cut off using press machine or punch die, and a large amount of systems
Make the magnetic piece 20,21 of same shape.Magnetic sheet green compact are that magnetic powder is distributed in adhesive resin, and extends not
The thin plate of sintering.In piece making step, it is cut into the front edge 51 of the protrusion 50 of the magnetic piece 20,21 of a body plate shape
And the front edge 45 of extension portion 44 carries out chamfer machining by polishing.
In configuration step, as shown in fig. 6, be arranged magnetic piece 20 and 21, makes theirs in bonding 10 top surface of thin plate
While direction is criss-cross mutually, recess portion 40 and protrusion 50 is made to be entrenched togather mutually.The top surface of bonding thin plate 10 is applied
With processing of adhering, magnetic piece 20,21 is adhered on bonding thin plate 10, but can be removed.It can also be 100 thing of magnetic sheet
It is first cut into desired shape and size, and by the configuration of magnetic piece 20,21 on patch bonding thin plate 10.Alternatively, preparing volume
The bonding thin plate 10 of the overlength such as plate, and the configuration range of multiple magnetic pieces 20,21 is formed in the widthwise direction thereof.And in postscript
Cutting step in, cut the magnetic sheet 100 of desired shape and size.
In cutting step, thin plate 10 and magnetic piece 20,21 will be bonded along cutting line (cut line) CL with slicer
Cutting.The protrusion 50 of magnetic piece 20,21 is cut off.Hereafter, cut-off protrusion 50 is peeled off from bonding thin plate 10, as
The configuration of piece 24 is supplemented inside recess portion 40 ((a) referring to Fig.1).In this way, the arrangement field of magnetic piece 20,21 is just formed
For rectangle.Also, the resin of the injection melting of magnetropism piece 20,21 keeps its neighboring round and smooth, is hardened and is fabricated to
Rim member 60.
By the above method, the magnetic sheet 100 of the present embodiment has just been made.In above-mentioned manufacturing method, in production magnetic
Property piece piece making step in, cut the magnetic sheet green compact that be sintereds, after making single magnetic piece, configuring magnetic
In the configuration step of property piece, the above-mentioned magnetic piece individually made is arranged.Derive example as it, it can also be in piece system
Make in step, after unsintered magnetic sheet green compact are cut into magnetic piece 20,21 corresponding shapes, this is cut
Made of magnetic sheet green sintering magnetic piece 20,21 is made.
Furthermore it is also possible to carry out piece making step and configuration step simultaneously.I.e., it is possible to which it is magnetic to cut the plate being sintered
Body to make while meet the magnetic piece 20,21 of above-mentioned (A) and (B) condition, while carrying out piece making step and configuration step
Suddenly.Here, while piece making step is carried out and configuration step refers to, the action opportunity of two steps is at least on a period
It overlaps each other.
< second embodiment >
(a) of Fig. 7 is the plane model figure for indicating the magnetic sheet 100 of the present embodiment, and (b) of Fig. 7 is to indicate piece group
70 explanatory diagram.The magnetic sheet 100 of the present embodiment is different from the first embodiment and is that its magnetic piece 20~22 is that have long side
34 and short side 35 rectangular point and adjacent magnetic piece 20~22 intermesh the point of configuration in 34 direction of long side.
For ease of description, to 20~22 apposition hatching of magnetic piece of a part of (a) of Fig. 7.
Magnetic piece 20~22 is made of the material of rectangular channel with specific thickness.The lateral circle surface of magnetic piece 20~22
It is by long side surface corresponding with long side 34, and short sides corresponding with short side 35 are constituted.Hereinafter, will corresponding long side 34
Long side surface be known as the end face 30 of the present embodiment, the short sides of corresponding short side 35 are known as end face 31.
Then, the magnetic sheet 100 of the present embodiment is identical with the first embodiment on following points, i.e., multiple magnetic pieces
20, it 21 is arranged in planar, and meets (A) and (B) condition below simultaneously.
(A) end face 30 of adjacent magnetic piece 20 and the end face 31 of magnetic piece 21 are face contact mutually.
(B) adjacent magnetic piece 20 and 21, (Fig. 7 respectively schemes the extending direction for referring to along the end face 30,31 of face contact
In X-direction), be configured on the position for the split that intermeshes.
Even if magnetic sheet 100 is bent towards the end face of face contact 30,31 extending directions (X-direction) as a result, since this is curved
Song is occurred in end face 30,31 planes, so the face contact of magnetic piece 20 and 21 can be also maintained.Therefore, even if
Magnetic sheet 100 is bent towards the direction, and magnetism characteristic will not especially deteriorate.
The center of gravity of second magnetic piece 21 represented by (a) of Fig. 7, relative to the center of gravity of the first magnetic piece 20, no matter
In X-direction still in the Y direction all in different positions.That is, no matter in the x-direction and the z-direction, the first 20 He of magnetic piece
Second magnetic piece 21 is all configured on the position for the split that intermeshes.Similarly, no matter in the x-direction and the z-direction, first
Magnetic piece 20 and third magnetism piece 22 are all configured on the position for the split that intermeshes.In addition, the second magnetic piece 21
Identical with the direction of 22 shape of third magnetism piece and configuration, the two is intended merely to convenient and is distinguished.
Second embodiment and first embodiment are also identical in point below.
Firstly, magnetic piece 20 (the first magnetic piece), first and second end face 30 that there is extending direction to cross one another,
31。
In addition, first end face 30 does mutually face contact in the end face 31 with adjacent magnetic piece 21 (the second magnetic piece)
While, the first magnetic piece 20 and the second magnetic piece 21, along prolonging for the first end face 30 on the first magnetic piece 20
Direction (X-direction) is stretched, is configured on the position for the split that intermeshes.
Also, the second end face 31 of the first magnetic piece 20 is done mutually in the end face 30 with adjacent third magnetism piece 22
While face contact, the first magnetic piece 20 and third magnetism piece 22, along the second end face 32 of the first magnetic piece 20
Extending direction (Y-direction), is configured on the position for the split that intermeshes.
Therefore, the magnetic sheet 100 of second embodiment is also the same no matter towards X-direction or Y-direction or X-direction and the side Y
To compound direction any direction bending, the surface contact state of magnetic piece 20~22 with each other can be maintained.
The magnetic sheet 100 of the present embodiment is at least one party of adjacent magnetic piece (such as magnetic piece 20)
Part is altogether for benchmark, a part of range of the end face of the magnetism piece and other adjacent magnetic pieces (such as magnetic piece 21)
It enjoys.In other words, in 100 flat shape of magnetic sheet, magnetic piece 20,21 adjacent to each other is shared in prescribed direction
Crest line, and these magnetic pieces 20,21, intersect vertically on direction, intermesh split with the crest line.
Piece group 70 represented by (b) of Fig. 7 is the cluster as composed by multiple (diagram 4) magnetic pieces 20,21.Fig. 7
(a) represented by the present embodiment magnetic sheet 100, be to be arranged by these pieces group 70 by mutually the same direction
's.
Manufacture the present embodiment magnetic sheet 100 when, due to pre-production piece group 70, thus only by its according to
Same direction seamlessly comes on bonding thin plate 10, is easy to produce magnetic sheet 100.It can also will constitute
The magnetic piece 20,21 of piece group 70 is formed as the transitory state for being easy to be broken, and piece group 70 is arranged in bonding thin plate 10
On.
The various constituents of magnetic sheet of the invention, it is not necessary that be single independent presence, can be multiple
Constituent forms a component, is also possible to that a constituent forms multiple components or certain constituent is other structures
It is mutually repeated at a part of ingredient or a part of certain constituent with a part of other constituents.
Above-described embodiment includes technical idea below.
(1) a kind of magnetic sheet it is characterized in that being arranged by multiple magnetic pieces in planar, and meets simultaneously
(A) and (B) condition below；I.e.
It (A) is mutually face contact between the end face of adjacent above-mentioned magnetic piece,
(B) adjacent above-mentioned magnetic piece, is configured in mutual intersection along the extending direction of the above-mentioned end face of face contact
On the position of misspelled conjunction.
(2) magnetic sheet documented by above-mentioned (1), it is characterized in that, first piece of above-mentioned magnetic piece has extending direction mutual
First and second end face to intersect, above-mentioned first end face and the end face of adjacent second piece above-mentioned magnetic piece connect for face
Touching, meanwhile, first and second above-mentioned block magnetism piece is configured in the spelling that intermeshes along the extending direction of above-mentioned first end face
On the position of conjunction, the end face of above-mentioned second end face and the above-mentioned magnetic piece of adjacent third block is face contact, meanwhile, above-mentioned the
One and third block magnetism piece be configured in along the extending direction of above-mentioned second end face on the position for the split that intermeshes.
(3) magnetic sheet documented by above-mentioned (1) or (2), it is characterized in that, positioned at the orientation of above-mentioned magnetic piece
On any line segment of extended line, at least one piece above-mentioned magnetic piece, and other magnetism adjacent with this block magnetism piece are spelled
Block meets the condition of above-mentioned (A) and (B) simultaneously.
(4) magnetic sheet documented by any one of above-mentioned (1)-(3), it is characterized in that, adjacent above-mentioned magnetic spelling
Same shape is mutually of between block.
(5) magnetic sheet documented by any one of above-mentioned (1)-(4), it is characterized in that, above-mentioned magnetism piece has recessed
Portion and protrusion, raised part are for mutually chimeric with the above-mentioned recess portion of other adjacent magnetic pieces, in raised part
End face of the projected direction as extending direction, and using the recessed direction in above-mentioned recess portion as the end face of extending direction, be mutually
Face contact.
(6) magnetic sheet documented by above-mentioned (5), it is characterized in that, the front edge of raised part or above-mentioned recess portion are most
At least one of deep edge is chamfered so that above-mentioned magnetic sheet when being bent, will not interfere with above-mentioned front edge or
Above-mentioned most deep edge another.
(7) magnetic sheet documented by any one of above-mentioned (1)-(6), it is characterized in that, it include a bonding thin plate,
It is capped and is fixed on the surface of multiple above-mentioned magnetic pieces.
(8) magnetic sheet documented by any one of above-mentioned (1)-(7), it is characterized in that, comprising bendable folding endurance
Rim member, that surrounds the peripheries of above-mentioned magnetic piece.
(9) a kind of electronic instrument, it is characterized in that, including magnetic sheet documented by any one of above-mentioned (1)-(8), with
The thickness direction of above-mentioned magnetic sheet is the coil in spool direction, and provides the circuit substrate of alternating current to above-mentioned coil.
(10) a kind of manufacturing method of magnetic sheet, it is characterized in that, be about by multiple magnetic pieces in planar arrangement
It is configured to the manufacturing method of magnetic sheet, includes the steps that the production identical multiple above-mentioned magnetic pieces of shape each other, it will be multiple
In the above-mentioned magnetic piece of face contact, the position for the split that intermeshes configured in the extending direction along above-mentioned end face between end face
The step set, and the step of peripheral part of the above-mentioned magnetic piece of cutting to make above-mentioned magnetic sheet.
(11) magnetic sheet documented by any one of above-mentioned (1)-(4), it is characterized in that, above-mentioned magnetism piece is in have
The oblong-shaped of long side and short side, adjacent above-mentioned magnetic piece are configured in the direction perpendicular to above-mentioned long side.
(12) magnetic sheet documented by above-mentioned (11), it is characterized in that, it is the piece as composed by multiple magnetic pieces
Group, made of being configured according to same direction.
(13) magnetic sheet manufacturing method documented by above-mentioned (10), it is characterized in that, making above-mentioned magnetic piece step
In, magnetism green compact thin plate made of cutting is sintered after individually making above-mentioned magnetic piece, is configuring above-mentioned magnetic piece step
In rapid, the above-mentioned magnetic piece individually made is configured.
(14) magnetic sheet manufacturing method documented by above-mentioned (10), it is characterized in that, above-mentioned magnetic piece step is being made,
After unsintered magnetic green compact thin plate is cut into shape corresponding with above-mentioned magnetic piece, above-mentioned magnetism that will cut
Green compact thin plate is sintered to make above-mentioned magnetic piece.
(15) magnetic sheet manufacturing method documented by above-mentioned (10), it is characterized in that, by the way that the plate sintered will be cut
Magnetic substance cuts into while meeting multiple above-mentioned magnetic pieces of the condition of above-mentioned (A) and (B), to make to make above-mentioned magnetism
The above-mentioned steps of piece and the above-mentioned steps for configuring above-mentioned magnetic piece are carried out simultaneously.
Claims (8)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-257233 | 2012-11-26 | ||
| JP2012257233A JP6131418B2 (en) | 2012-11-26 | 2012-11-26 | Electronics |
| CN201310349554.8A CN103841812B (en) | 2012-11-26 | 2013-08-12 | The manufacture method of magnetic sheet, electronic instrument and magnetic sheet |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310349554.8A Division CN103841812B (en) | 2012-11-26 | 2013-08-12 | The manufacture method of magnetic sheet, electronic instrument and magnetic sheet |
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| CN106231882A CN106231882A (en) | 2016-12-14 |
| CN106231882B true CN106231882B (en) | 2019-02-12 |
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| CN201310349554.8A Active CN103841812B (en) | 2012-11-26 | 2013-08-12 | The manufacture method of magnetic sheet, electronic instrument and magnetic sheet |
| CN201610605579.3A Active CN106231882B (en) | 2012-11-26 | 2013-08-12 | Magnetic Sheets and Electronic Instruments |
| CN201610608055.XA Active CN106028775B (en) | 2012-11-26 | 2013-08-12 | Magnetic Sheets and Electronic Instruments |
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| JP6131418B2 (en) * | 2012-11-26 | 2017-05-24 | スミダコーポレーション株式会社 | Electronics |
| JP6327216B2 (en) * | 2015-08-07 | 2018-05-23 | トヨタ自動車株式会社 | Coil unit |
| CN105555110B (en) * | 2015-12-09 | 2018-07-24 | 上海斐讯数据通信技术有限公司 | A kind of shielding case structure |
| JP7341952B2 (en) | 2020-06-25 | 2023-09-11 | ヤマハ発動機株式会社 | Mounting procedure determining device, component mounting system, and mounting procedure determining method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103841812A (en) | 2014-06-04 |
| CN103841812B (en) | 2017-06-30 |
| JP2014107322A (en) | 2014-06-09 |
| JP6131418B2 (en) | 2017-05-24 |
| CN106028775A (en) | 2016-10-12 |
| CN106231882A (en) | 2016-12-14 |
| CN106028775B (en) | 2019-03-15 |
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