CN110310810A - Face is installed by inductor and its manufacturing method - Google Patents
Face is installed by inductor and its manufacturing method Download PDFInfo
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- CN110310810A CN110310810A CN201910007169.2A CN201910007169A CN110310810A CN 110310810 A CN110310810 A CN 110310810A CN 201910007169 A CN201910007169 A CN 201910007169A CN 110310810 A CN110310810 A CN 110310810A
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- formed body
- lead division
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- Coils Or Transformers For Communication (AREA)
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Abstract
The present invention provides a kind of face installation inductor, and the coil end connecting with external terminal can be made to be easy to expose from the surface of extrusion forming body, superior in the connectivity between external terminal and coil.Face installation inductor has: coil, the coil are formed by the conducting wire with insulating coating, have winder and lead division；Formed body, the winder of the formed body internal coil；A pair of of support plate, a pair of support plate are respectively arranged at the opposed face of formed body；And external terminal, the external terminal configure on formed body.Support plate has exposed portion, and the part of the exposed portion is embedded in formed body, and at least local face of the exposed portion is exposed from the face of formed body configured for support plate.The state that the end of the lead division of coil is stripped with insulating coating is configured in support plate on the face of exposed portion side.The area in the face for support plate configuration of the area ratio formed body of exposed portion is small, and the end of the lead division of external terminal and coil contiguously configures.
Description
Technical field
The present invention relates to face installation inductor and its manufacturing methods.
Background technique
Using the inductor obtained from extrusion forming body seals coil, the extrusion forming body is by resin and magnetic powder
It constitutes.In such inductor, along with the increase of the consumption electric power for the equipment for using inductor, it is desirable that D.C. resistance
(DCR) improvement of reduction, DC superposition characteristic.For example, the inductor being described below in patent document 1: having for conducting wire
Frame enters internal shape, connects the end of coil with lead frame in the inside of extrusion forming body.In addition, in patent document
The sheet metal that the inductor being described below in 2: including internal coil in magnetic core assembly and connect with the Wire termination of coil,
The periphery of sheet metal and magnetic core assembly is provided with electrode.
Patent document 1: KR published patent 10-2017-0023503 bulletin
Patent document 2: Chinese utility model announces No. 204668104 specification
In the inductor of conventional art, since lead frame etc. enters the inside of extrusion forming body, it is difficult to increase line
The diameter of circle.Therefore, it is difficult to improve D.C. resistance (DCR) using heavy gauge wire or increase coil by using thin wire
Diameter and improve DC superposition characteristic.On the other hand, coil end is made when extrusion forming in the exposure of the surface of formed body and is made
In the case that expose portion and lead frame are formed by connecting as external terminal, coil end can be due to if coil is formed by thin wire
It is press-formed and is buried in formed body, be difficult sometimes with the connection of lead frame.
Summary of the invention
The purpose of one embodiment of the present invention is, provides a kind of face installation inductor and its manufacturing method, can make with
The coil end of external terminal connection is easy to expose from the surface of extrusion forming body, in the connectivity between external terminal and coil
It is superior.
1st mode provides face installation inductor, and face installation inductor has: coil, the coil is by with insulating coating
Conducting wire formed, have winder and lead division；Formed body, the winder of the formed body internal coil；A pair of of support plate, this one
The opposed face of formed body is respectively arranged to support plate；And external terminal, the external terminal configure on formed body.Branch
Board has exposed portion, and the part of the exposed portion is embedded in formed body, and at least local face of the exposed portion is from the formed body
For the support plate configuration face exposure.The state configuration that the end of the lead division of coil is stripped with insulating coating is being propped up
Board on the face of exposed portion side.The face for support plate configuration of the area ratio formed body of the exposed portion of support plate
Area it is small.The end of the lead division of external terminal and coil contiguously configures.
2nd mode provides the manufacturing method of face installation inductor.Manufacturing method includes following process: prepare coil, it should
Coil is formed by the conducting wire with insulating coating, has winder and lead division；The end of the lead division of coil is respectively configured
On a face of a pair of of support plate；Line is clamped using the multiple prepared formed bodys formed by the composite material comprising magnetic powder
The winder of circle stacks gradually the end of the lead division of the side of prepared formed body, support plate and coil and and forming metal
The medial surface of mould is opposed to configuration in molding metal mold；And the volume of the built-in coil is obtained in the molding metal mold
Around portion and make the formed body for lying at least partially in opposed face exposure of the support plate.
According to one method of the present invention, it is capable of providing face installation inductor and its manufacturing method, can be made and outer end
The coil end of son connection is easy to expose from the surface of extrusion forming body, superior in the connectivity between external terminal and coil.
Detailed description of the invention
Figure 1A is the top view from installation surface side of the face installation inductor of embodiment 1.
Figure 1B is the cross-sectional view of the line A-A along Fig. 1.
Fig. 1 C is the partial enlarged view of Figure 1B.
Fig. 1 D is the figure that the variation of the face installation inductor to embodiment 1 is illustrated.
Fig. 1 E is the figure that the variation of the face installation inductor to embodiment 1 is illustrated.
Fig. 2 is the partial sectional view at the face orthogonal with mounting surface of the face installation inductor of embodiment 2.
Fig. 3 is the cross-sectional view at the face orthogonal with mounting surface of the face installation inductor of embodiment 3.
Fig. 4 is the cross-sectional view at the face orthogonal with mounting surface of the face installation inductor of embodiment 4.
Fig. 5 is the cross-sectional view at the face parallel with mounting surface of the face installation inductor of embodiment 5.
Fig. 6 is the top view that the manufacturing method of opposite installation inductor is illustrated.
Fig. 7 is the top view that the manufacturing method of opposite installation inductor is illustrated.
Fig. 8 is the cross-sectional view that the manufacturing method of opposite installation inductor is illustrated.
Specific embodiment
Face installation inductor has: coil, the coil are formed by the conducting wire with insulating coating, have winder and extraction
Portion；Formed body, the winder of the formed body internal coil；A pair of of support plate, a pair of support plate are respectively arranged at formed body
Opposed face；And external terminal, the external terminal configure on formed body.Support plate has exposed portion, the exposed portion
Part is embedded in formed body, and at least local face of the exposed portion is exposed from the face of formed body configured for support plate.Coil
The state that the end of lead division is stripped with insulating coating is configured in support plate on the face of exposed portion side.Support plate
The area in the face for the configuration of above-mentioned support plate of the area ratio formed body of exposed portion is small.The end of the lead division of external terminal and coil
Portion contiguously configures.
By have formed body side exposure face support plate on configure coil lead division end, from
And even if forming coil using thin wire, conducting wire of section circle etc., also coil end can be made to be easy on the surface of formed body
Exposure.In addition, it is not necessary that by the lead frame being connect with coil end configuration in formed body, therefore can make to be built in formed body
The diameter of interior coil tends to get bigger.Thereby, it is possible to keep the conducting wire to form coil thicker improve D.C. resistance (DCR) characteristic,
Or the coil being relatively large in diameter is formed using thin wire and improves DC superposition characteristic.Although that is, being the face peace of same structure
Inductor is filled, but can selectively improve D.C. resistance (DCR) characteristic and DC superposition characteristic.
The mask for being also possible to the end configuration of the lead division for coil of support plate is conductive, external terminal, coil
Lead division and support plate be electrically connected to each other.Since the lead division of coil being clamped using support plate and external terminal,
Connection between coil and external terminal becomes more firm.
It is also possible to support plate to be made of insulator, the lead division electrical connection of external terminal and coil.Since support plate is
Insulator, thus even if increasing the diameter of the winder of coil, it also can be improved exhausted between the winder of coil and external terminal
Edge.
Be also possible to the distance between support plate and the winder of coil on the direction vertical with winding axis most
Big size is roughly the same.That is, be also possible to size of the winder of coil on the direction between support plate and support plate it
Between distance it is roughly the same.Even if minimizing formed body, it is also capable of forming the coil winder with sufficient diameter.
It is also possible to being located between the bottom surface and the upper surface opposed with bottom surface of formed body of installation surface side for formed body
The maximum size on the direction vertical with axis is wound of distance and the winder of coil is roughly the same.That is, being also possible to
The winder of coil in the size on the direction orthogonal with the bottom and upper surface of formed body and between bottom surface and upper surface
Apart from roughly the same.Even if minimizing formed body, it is also capable of forming the coil winder with sufficient diameter.
It is also possible to the face exposure that is located at installation surface side of the end in formed body of support plate.Thereby, it is possible to improve molding
The position precision of support plate when the formation of body.
Being also possible to support plate has the recess portion of lead division of receiving coil.Since support plate is more stably in formed body
Outer exposed, therefore overhang is more reliably in the outer exposed of formed body.
The manufacturing method for being also possible to face installation inductor includes following process: preparing coil, the coil is exhausted by having
The conducting wire of edge epithelium is formed, and has winder and lead division；The end of the lead division of coil is arranged respectively at a pair of of support plate
A face on；Using the multiple plates formed by the composite material comprising magnetic powder preparation formed body it is orthogonal with side
Face clamps the winder of above-mentioned coil, and the end of the lead division of support plate and coil is made to be sequentially laminated on the side of prepared formed body
Configuration is opposed in molding metal mold on face and with the side of molding metal mold；And it is obtained in molding metal mold built-in
The winder of coil and the formed body for lying at least partially in opposed face exposure for making support plate.It is also possible to manufacturing method also to wrap
The process on formed body is configured containing the external terminal that will be electrically connected with the end of the lead division of coil.By with by coil
State of the lead division configuration on the face of the opposite side in the face opposed with formed body of support plate forms formed body, thus coil
The end of lead division will not be embedded in formed body and the exposure outside formed body.The company of external terminal and overhang as a result,
It connects and becomes easy.
Being also possible to prepared formed body has a recess portion in opposed side, the end layers of the lead division of support plate and coil
It is stacked on the bottom surface of recess portion.Support plate can be reliably suppressed to be buried in formed body, overhang is made more reliably to exist
Exposure outside formed body.
The length on the direction orthogonal with the depth direction of bottom surface sections for being also possible to recess portion forms than opening portion
Length is short.The configuration precision of support plate further increases, and makes the overhang more reliably exposure outside formed body.
In the present specification, " process " this term refers not only to independent process, even can not with other processes
In the case where clearly distinguishing, it is also contained in this term as long as realizing purpose expected from the process.Hereinafter, being based on attached drawing pair
Embodiments of the present invention are illustrated.But embodiment as shown below is instantiated for making technical idea of the invention
Face installation inductor of materialization etc., the present invention is not limited to face as shown below installation inductors etc..In addition, shown in claim
Component be not limited to the component of embodiment.The size of the structure member especially recorded in embodiment, material, shape,
Its opposite configuration mode etc. is recorded as long as no specific, is not that the scope of the present invention is only limitted to this, and only
Illustrate example.In addition, marking same reference numerals to same position in the various figures.In view of the explanation of main points or being easy for understanding
Property, the part of structure that embodiment is separately depicted, but shows in various embodiments for convenience can replace or
Person's combination.In embodiment 2 hereinafter, omitting the description of the object shared with embodiment 1, only difference is illustrated.In particular,
The identical function and effect caused by identical structure, are not illustrated successively in each embodiment sometimes.
[embodiment]
Hereinafter, by embodiment, specifically the present invention will be described, but the present invention is not limited to these Examples.
Embodiment 1
A to Fig. 1 C is illustrated the face installation inductor 100 of embodiment 1 referring to Fig.1.Figure 1A is face installation inductor
Approximate vertical view from installation surface side.Figure 1B is the schematic sectional view of the AA line along Figure 1A, is the winding axis with coil
Cross-sectional view at parallel face.Fig. 1 C is the partial enlarged view of Figure 1B.
As shown in Figure 1A, installation inductor 100 in face includes the formed body 10 for being built-in with coil (not shown) and configuration
External terminal 12 on the surface of formed body 10.Formed body 10 includes the bottom surface for being located at installation surface side, the upper table opposed with bottom surface
Face and 4 sides adjacent with bottom and upper surface.The height of formed body 10 be bottom surface between upper surface at a distance from, molding
Distance of the vertical and horizontal length of body between opposed side.External terminal 12 connects with the coil end for being built in formed body 10
It connects, extends to upper surface via side from the bottom surface of formed body 10.
In fig. ib, the winder 14 of coil is built in formed body 10, and it is orthogonal with mounting surface to be configured as its winding axis.
Coil is formed by the conducting wire with insulating coating, has winder 14 and lead division, which is by Wire-wound into 2 layers
And be located at the both ends of conducting wire made of most peripheral, the lead division be by the both ends of conducting wire from winder extraction made of.?
The opposed side of formed body 10 is configured with 1 pair of support plate 16.16 through-thickness of support plate is embedded in formed body 10, makes to support
The face of the opposite side in the face opposed with formed body 10 of plate 16 forms exposed portion from the exposure of formed body 10.The exposure of support plate 16
The area for the side of the area ratio formed body 10 in portion configured for support plate 16 is small.Support plate 16 uses its area ratio formed body
The component of the small plate of the area of side.External terminal 12 covers support plate 16, the end (not shown) with the lead division of coil
Connection extends to upper surface via side from the bottom surface for being located at installation surface side of formed body 10.
Formed body 10 is formed as example big from vertical 5mm × horizontal 5mm × height 7mm to vertical 7mm × horizontal 7mm × height 5mm
It is small.Formed body is for example to be press-formed and formed to the composite material comprising resin and magnetic powder.Magnetic substance can make
With the metal magnetic powder of the iron series such as such as Fe, Fe-Si, Fe-Si-Cr, Fe-Si-Al, Fe-Ni-Al, Fe-Cr-Al
The gold that metallic magnetic powders, the surface such as end, other metallic magnetic powders for forming system, noncrystal are covered by insulators such as glass
Belong to the small metal magnetic body powder of Magnaglo, the metallic magnetic powder modified to surface, nanoscale, ferrite
Deng.In addition, resin uses heat-curing resins, polyvinyl resin, the polyamide such as epoxy resin, polyimide resin, phenol resin
Thermoplastic resins such as resin etc..
Support plate 16 is for example rectangular-shaped metal plate, length the configuring for support plate than formed body 10 of vertical and horizontal
Side vertical and horizontal length it is small.At least 3 sides in the side of support plate 16 are embedded in formed body 10.Support plate
16 are formed as example from vertical 3mm × horizontal 3mm to the size of vertical 5mm × horizontal 5mm.The thickness of support plate 16 is formed as such as 0.1mm
Above and 0.15mm or less.
As long as support plate 16 have thickness plate component, the shape of plate be also possible to rectangular-shaped, round,
The arbitrary shape such as ellipticity, multilateral shape.In addition, support plate 16 can also be by configuring in the end of the lead division for coil 18
The insulating properties base material of the conductive metal layer of mask formed.That is, support plate 16 also can have the insulating properties base material of plate
With metal layer of the configuration in one face.Insulating properties base material is able to use the resin base material such as epoxy resin, aluminium oxide etc..
As long as external terminal 12 extends to the bottom surface of formed body 10 and at least part of side, upper surface can not also be configured at.
In fig. ib, the winding axis of the winder 14 of coil is orthogonal with mounting surface, but wireline reel line can also be made parallel with mounting surface
Ground configures coil.
As shown in Figure 1 C, in face installation inductor 100, coil is configured as making the winding axis of winder 14 and installation
Face is orthogonal.The winder 14 of coil is formed by the conducting wire with insulating coating film.The conducting wire for forming coil is rectangular in cross-section shape
Flat wire.The state configuration that the end 18 of the lead division of coil is stripped with insulating coating is located at exposed portion side in support plate 16
Face on.Support plate 16 is formed by conductive metal plate.In the end 18 of the lead division for coil of support plate 16
Solder layer 20 is formed on the face of configuration, the end 18 of the lead division of coil is electrically connected with support plate 16, and the extraction of coil
The end 18 in portion is fixed on support plate 16.The end 18 of the lead division of coil be clamped in support plate 16 and external terminal 12 it
Between, it is electrically connected with support plate 16 and external terminal 12.It is also possible to solder layer 20 by the thickness roughly the same with the end 18 of conducting wire
Degree is formed, and external terminal 12 is engaged with solder layer 20.16 through-thickness of support plate is embedded in the side of formed body 10, solder layer
20 surface becomes the exposed portion 16A of support plate 16 in the exposure of the side of formed body 10.The area ratio of exposed portion 16A forms
The area for the side of body 10 configured for support plate 16 is small.In the end of support plate 16 and the lead division for making coil of formed body 10
External terminal 12 is configured on the side of 18 exposures, which covers the end of the lead division of support plate 16 and coil
18.External terminal 12 is formed by at least local lead frame of the bottom surface of covering formed body 10, side and upper surface.
The end 18 that the lead division of coil is connected on a face of support plate 16, is configured at using a face as outside
The side of formed body 10, to form formed body 10, the thus at least lead division of part and coil on the surface of support plate 16
End 18 is exposed from formed body 10.By being connected to the lead frame of external terminal 12 in the end of the exposure 18, and by coil
It is steadily connected with external terminal 12.The end 18 of the lead division of coil is supported and sudden and violent in the side of formed body 10 by support plate 16
Reveal, therefore can be realized the good company between end and conducting wire in the case where the thinner thickness of the flat wire as conducting wire
It connects.In addition, in the state that the end of the lead division of coil 18 is clamped by support plate 16 and external terminal 12, support plate 16 and outer
Thus portion's terminal 12 improves the bonding strength that the end 18 of the lead division of coil is connect with external terminal 12 by solder connection.
Fig. 1 D is the enlarged partial sectional view being illustrated to the face installation inductor 110 of the variation as embodiment 1.
In Fig. 1 D, other than forming the section of conductor of coil and being round, constituted in the same manner as face installation inductor 100.
In Fig. 1 D, the state that the end 18 of the lead division of coil is stripped with insulating coating is configured in support plate 16
On the face of exposed portion side.The supported plate 16 in end 18 of the lead division of coil is supported and is exposed in the side of formed body 10,
Even if therefore the section of conducting wire is circle, conducting wire will not be embedded in formed body and can be realized good connection.In addition,
In the state that the end 18 of the lead division of coil is clamped by support plate 16 and external terminal 12, support plate 16 and external terminal 12 are logical
Solder connection is crossed, the bonding strength that the end 18 of the lead division of coil is connect with external terminal 12 is thus improved.
Fig. 1 E is the enlarged partial sectional view being illustrated to the face installation inductor 120 of the variation as embodiment 1.
In fig. ie, it other than solder layer not set on support plate 16, is constituted in the same manner as face installation inductor 100.
In fig. ie, the state that the end 18 of the lead division of coil is stripped with insulating coating is configured in support plate 16
On the face of exposed portion side.At least local face of support plate 16 from formed body 10 for face exposure that support plate 16 configures and
Form exposed portion 16A.The thickness with end 18 has been buried in the inside of formed body in the part of support plate 16 configured for end 18
Corresponding thickness.Although it is not shown, it may also be, the end 18 of the lead division of coil is connect by solder with support plate 16.
In face installation inductor 120, due to not needing the entire surface setting solder layer in support plate 16, keep manufacturing process simple
Change.
Embodiment 2
The face installation inductor 200 of embodiment 2 is illustrated referring to the enlarged partial sectional view of Fig. 2.Electricity is installed in face
In sensor 200, other than support plate 17 is formed by insulator, constituted in the same manner as the face of embodiment 1 installation inductor 100.
The state configuration that the end 18 of the lead division of coil is stripped with insulating coating is located at exposure in support plate 17
On the face of portion side.Support plate 17 is formed by insulators such as glass reinforced epoxy resin, epoxy resin, aluminium oxide.In support plate 17
The lead division for coil the face that configures of end 18 on be formed with the adhesive layer 21 comprising adhesive, conductive paste etc. and by end
Portion 18 is fixed on support plate 17.The end 18 of the lead division of coil be clamped between support plate 17 and external terminal 12 and with
External terminal 12 is electrically connected.Adhesive layer 21 is formed with the thickness roughly the same with the end 18 of conducting wire.Support plate 17 is along thickness side
To the side for being embedded in formed body 10, the surface of adhesive layer 21 becomes the exposure of support plate 17 in the exposure of the side of formed body 10
Portion 17A.
As long as support plate 17 has insulating properties in the face opposed with the winder 14 of coil, it is also possible to for line
The face that the end 18 of the lead division of circle configures has the metal layer of the electric conductivity such as copper.In this case, it is also possible to drawing for coil
The end 18 in portion, which is connect by solder with support plate 17, out is fixed on support plate 17.
In face installation inductor 200, support plate 17 is formed by insulator, and thus, it is possible to inhibit because of external terminal 12 and line
Insulation breakdown caused by potential difference between the winder 14 of circle.Therefore, the outer diameter of coil can be increased to support plate it
Between distance it is roughly the same.
Embodiment 3
It is illustrated referring to face installation inductor 300 of the Fig. 3 to embodiment 3.Fig. 3 be face installation inductor 300 and line
Schematic sectional view at the face of the winding axis vertical take-off of circle.In face installation inductor 300, in addition to support plate 17 is by the insulation bodily form
Be formed as the minimum range between support plate 17 at outer diameter a of the winder 14 of, coil on the direction between support plate 17
Roughly the same, support plate 17 end formed body 10 bottom surface (in figure the be downside) exposure for being located at installation surface side, make line
The winding axis and mounting surface of the winder 14 of circle configure other than coil in parallel, same with the face installation inductor 100 of embodiment 1
Constitute to sample.
The end 18 of the lead division of coil is from the upper surface (being upside in figure) of the formed body 10 of the winder 14 of coil
It nearby draws to the side surface direction of formed body 10, extends along the side of formed body 10 to bottom surface direction.The lead division of coil
The state that end 18 is stripped with insulating coating is configured in support plate 17 on the face of exposed portion side, utilizes adhesive layer 21
It is connect with support plate 17.Adhesive layer 21 is formed by the thickness roughly the same with the end 18 of conducting wire.In Fig. 3, adhesive layer 21 is only
It is formed in the part on support plate 17, exposure forms from the side of formed body 10 in the face of the not formed adhesive layer 21 of support plate 17
For exposed portion 17A.In addition, support plate 17 extends to the bottom surface of formed body 10, an end of support plate 17 is in formed body 10
Bottom surface exposure.External terminal 12 extends to upper surface via side from the bottom surface of formed body 10.The end of the lead division of coil
Portion 18 is clamped by support plate 17 and external terminal 12, is connect using solder with external terminal 12.
In face installation inductor 300, support plate 17 is formed by insulator, so as to increase the winder 14 of coil
Outer diameter a on the direction orthogonal with the face of support plate 17.It, also can be built-in even the size of limited formed body as a result,
The coil of major diameter.In addition, the end of support plate 17 is in the exposure of the bottom surface of formed body 10, thus in face installation inductor 300
The position precision of support plate 17 when can be improved to form formed body 10.
The face that the end 18 that adhesive layer 21 can also cover the lead division for coil of support plate 17 configures it is arranged.At this
In the case of, 17 through-thickness of support plate is embedded in the side of formed body 10, and the surface of adhesive layer 21 is in the side of formed body 10
Exposure, and become the exposed portion of support plate 17.
Embodiment 4
It is illustrated referring to face installation inductor 400 of the Fig. 4 to embodiment 4.Fig. 4 be face installation inductor 400 and line
Schematic sectional view at the face of the winding axis vertical take-off of circle.Face installation inductor 400 in, in addition to coil winder 14
And the outer diameter b on the orthogonal direction in the upper surface and bottom surface of formed body 10 be formed as it is roughly the same with the height of formed body 10, with
And external terminal 12 does not extend to other than the upper surface of formed body 10, the structure in the same manner as the face of embodiment 3 installation inductor 300
At.
In face installation inductor 400, the outer diameter a on the direction between support plate 17 of the winder 14 of coil is formed
It is roughly the same for the minimum range between support plate 17, the winder 14 of coil in the upper surface and bottom surface with formed body 10
Outer diameter b on orthogonal direction is formed as the height with the distance between the upper surface of formed body 10 and bottom surface, i.e. formed body 10
It is roughly the same.In addition, the configuration of external terminal 12 is not configured in the bottom surface of formed body 10 and the part of side in the upper of formed body 10
Surface.
The outer diameter of the winder 14 of coil is the maximum value that can be built in formed body 10, more excellent thus, it is possible to constitute
The face of characteristic is installed by inductor.In addition, external terminal 12 is not configured in the upper surface of the formed body 10 of the lead division close to coil,
Thus, it is possible to improve the insulation characterisitic of external terminal 12 Yu coil.
Embodiment 5
It is illustrated referring to face installation inductor 500 of the Fig. 5 to embodiment 5.Fig. 5 is from installation surface side viewing surface installation electricity
The schematic sectional view of the section parallel with mounting surface of sensor 500.Winding in face installation inductor 500, in addition to making coil
The winding axis in portion 14 configures coil, the prolonging along the end 18 of the lead division of coil on support plate 16 with mounting surface in parallel
It stretches direction to be arranged other than the recess portion to accommodate end 18, be constituted in the same manner as the face of embodiment 1 installation inductor 100.
In face installation inductor 500, coil is formed by the conducting wire that section is rectangle.The end 18 of the lead division of coil from
The winder 14 of coil is drawn and is drawn from the upper surface side of formed body 10, extends along side to bottom surface direction.Support plate
16 be for example rectangular-shaped metal plate, the side configured in formed body 10 with having the exposed portion 16A exposed from formed body 10.?
Support plate 16 is formed with the recess portion of the end 18 of the lead division to accommodate coil.End 18 is configured at the recess portion of support plate 16
Support plate 16 is fixed on using solder layer 20 to connect with support plate 16 in bottom surface.The width of the opening portion of the recess portion of support plate 16
Degree forms bigger than the width of bottom surface.
In face installation inductor 500, by forming recess portion in support plate 16, the end of the lead division of coil can be improved
18 16 on support plate on position precision.
Embodiment 6
It is illustrated referring to manufacturing method of the Fig. 6 to the face installation inductor of embodiment 6.Fig. 6 is the face peace to embodiment 4
Diagrammatic top that an example of the manufacturing method of dress inductor 400 is illustrated, from the opening portion direction of molding metal mold
Figure.
In manufacturing method shown in Fig. 6, prepare coil, which is formed by the conducting wire with insulating coating, has volume
Around portion 14 and lead division.The configuration of end 18 of the lead division of coil in 1 pair of support plate 17 positioned at the face of not opposed side on, it is sharp
It is connect with adhesive layer 21 with support plate 17.The winder 14 of coil is clamped in be formed by the composite material comprising resin and magnetic powder
2 plates preparation formed body 22 the face orthogonal with thickness direction between and configure in molding metal mold 24.Support plate
17 are configured as making the side pair in the face of the face opposite side configured with the end 18 of the lead division for coil and preparation formed body 22
It sets, the face that the end 18 of the lead division for coil of support plate 17 configures is opposed with the medial surface of molding metal mold 24.In addition, branch
Board 17 is configured as making the inside face contact an of end face Yu molding metal mold 24.Then, by molding metal mold 24
The preparation formed body of the winder 14 of clamping coil is press-formed, and obtains formed body, which is configured as interior
It sets the winder 14 of coil and makes support plate 17 that there is exposed portion in side.By in the bottom surface of obtained formed body and confession
The side of the exposure of end 18 of the lead division of coil formed with external terminal that end 18 is connect and manufacture and inductor be installed.
Specifically, forming the coil with winder 14 and lead division, which will have insulating coating
Wire-wound is at 2 layers and conducting wire both ends is made to be located at most peripheral and be formed, which is the both ends of conducting wire from winder 14
Made of extraction.The end 18 of the lead division of coil is arranged respectively at 1 pair of support plate 17 with the state that insulating coating is stripped
Mutually not opposed face on.1st preparation formed body 22 of the plate formed by the composite material comprising resin and magnetic powder configures
In molding metal mold 24.Next, keep the winding axis of the winder 14 of coil orthogonal with the face of the 1st preparation formed body 22,
And by the configuration of the winder of coil 14 on the face of the 1st preparation formed body 22.Next, matching on the winder 14 of coil
Set the 2nd preparation formed body 22 of plate.At this point, configuring the end 18 of the lead division of coil in support plate 17 and molding metal mold
Between 24 medial surface, and support plate 17 is arranged respectively to the side of prepared formed body 22.Then, in molding metal mold 24
They are press-formed and integrated, it is obtained into formed body from the taking-up of molding metal mold 24.The face of support plate 17
The end 18 of the lead division of part and coil is in the exposure of the side of the formed body.Moreover, being equipped with the upper table of covering in the formed body
Face, side and bottom surface part lead frame or covering side and bottom surface part lead frame and form external terminal.
End by making the lead division of coil be connected the coil on support plate with preparation formed body together at
It is integrally formed in type metal mold, can efficiently produce formed body of the end in side exposure of the lead division of coil.
Embodiment 7
It is illustrated referring to manufacturing method of the Fig. 7 to the face installation inductor of embodiment 7.Fig. 7 is opposite installation inductor
Manufacturing method another example be illustrated, approximate vertical view from the opening portion direction of molding metal mold.Implementing
In the manufacturing method of example 7, in addition to using the recess portion for being respectively provided with receiving support plate 17 in opposed side as preparation formed body
Preparation formed body 23, support plate 17 an end do not contacted with the medial surface of molding metal mold other than, the system with embodiment 6
Method is made similarly to constitute.
In manufacturing method shown in Fig. 7, in the preparation formed body formed by the composite material comprising resin and magnetic powder
23 opposed side is respectively formed with the recess portion towards opposed surface side.Thickness direction of each recess portion in preparation formed body 23
On be formed through.Recess portion includes bottom surface, and the bottom surface is parallel with the preparation face of not formed recess portion of side of formed body 22；And
Side, the side connect bottom surface with the face of the not formed recess portion of the side of preparation formed body 23, and recess portion is to prepare formed body 23
Side not formed recess portion face between bottom surface at a distance from, i.e. depth formed.The depth of recess portion is than the support plate 17 that is accommodated
Length it is big or be shaped generally as identical.The length of the opening portion of recess portion forms longer than the length of the bottom surface of recess portion.That is,
Angle c between the side side being connected and the bottom surface of recess portion of preparation formed body 23 is bigger than 90 degree, is formed as such as 135
Degree.The depth of recess portion forms smaller than the aggregate value of the thickness of the end 18 of support plate 17 and the lead division of coil.With coil
The face and molding metal mold 24 that the support plate 17 that the end 18 of lead division connects configures the end 18 for the lead division of coil
Medial surface is opposed, and on the side for the recess portion configured in preparation formed body 23.Clamp the preparation molding of the winder 14 of coil
Body 23 is press-formed in molding metal mold 24 and forms formed body.
Preparation formed body has the recess portion of receiving support plate, thus even if in the thicker feelings of thickness for forming the conducting wire of coil
Under condition, also support plate is inhibited to be tilted because of extrusion forming to which conducting wire is embedded in formed body such case, can be realized and outside
The good connection of terminal.In particular, the length of the opening portion by making recess portion forms longer than the length of the bottom surface of recess portion, and
Make the side of recess portion that there is inclination, and it is bigger than 90 degree of angle, preferably 135 degree, thus its effect becomes significant.
Embodiment 8
It is illustrated referring to manufacturing method of the Fig. 8 to the face installation inductor of embodiment 8.Fig. 8 is opposite installation inductor
Manufacturing method the schematic sectional view that is illustrated of another example, be the surface side shown from the mounting surface as face installation inductor
The figure of section at the medial surface of the molding metal mold of observation.In the manufacturing method of embodiment 8, formed in support plate 17 useful
To accommodate the recess portion of the end 18 of the lead division of coil.
In the manufacturing method of Fig. 8, the coil with winder 14 and lead division is formed, which is will have absolutely
The circular Wire-wound of edge epithelium and section is formed at making conducting wire both ends be located at most peripheral, which makes conducting wire
Both ends are made of the extraction of winder 14.The end 18 of the lead division of coil is respectively configured with the state that insulating coating is stripped
On the recess portion formed on the mutually not opposed face in 1 pair of support plate 17.By the composite material shape comprising resin and magnetic powder
At 2 plates preparation formed body 22 be configured as clamping coil winder 14.The winding axis of the winder 14 of coil
It is orthogonal with the preparation face of formed body 22.The lead division of coil is configured between support plate 17 and the medial surface of molding metal mold 24
End 18, support plate 17 configuration preparation formed body 22 side on.Then, they are pressurizeed in molding metal mold 24
Molding and it is integrated, from molding metal mold 24 take out obtain formed body.
By being provided with the recess portion of the end of the lead division of receiving coil in support plate, the end on support plate can be improved
Position precision.
[explanation of appended drawing reference]
10 ... formed bodys；12 ... external terminals；14 ... coil winders；16,17 ... support plates；18 ... end turns；
100 ... faces are installed by inductor.
Claims (10)
1. inductor is installed in a kind of face, have:
Coil, the coil are formed by the conducting wire with insulating coating, have winder and lead division；
Formed body, the winder of the coil built in the formed body；
A pair of of support plate, a pair of support plate are respectively arranged at the opposed face of the formed body；And
External terminal, the external terminal configure on the formed body,
The support plate has exposed portion, and the part of the exposed portion is embedded in the formed body, the exposed portion it is at least local
Face is exposed from the face of the formed body configured for the support plate,
The state that the end of the lead division of the coil is stripped with the insulating coating configures being located in the support plate
On the face of exposed portion side,
The area in the face for support plate configuration of formed body described in the area ratio of the exposed portion is small,
The end of the external terminal and the lead division of the coil contiguously configures.
2. inductor is installed in face according to claim 1, wherein
The mask positioned at exposed portion side of the support plate is conductive,
The external terminal, the lead division of the coil and the support plate are electrically connected to each other.
3. inductor is installed in face according to claim 1, wherein
The support plate is made of insulator,
The electrical connection of the lead division of the external terminal and the coil.
4. inductor is installed in face according to claim 3, wherein
The distance between described support plate is with the winder of the coil on the direction vertical with the winding axis of winder
Maximum size it is roughly the same.
5. inductor is installed in face according to claim 3 or 4, wherein
Face and the upper surface the distance between opposed with the mounting surface of formed body for being located at installation surface side of the formed body
With the winder of the coil roughly the same with the maximum size on the vertical direction of winding axis.
6. inductor is installed in face according to any one of claim 1 to 5, wherein
The face exposure that is located at installation surface side of the end of the support plate in the formed body.
7. inductor is installed in face according to any one of claim 1 to 6, wherein
The support plate has the recess portion for the lead division for accommodating the coil.
8. a kind of manufacturing method of face installation inductor, it includes following processes:
Prepare coil, which is formed by the conducting wire with insulating coating, has winder and lead division；
The end of the lead division of the coil is arranged respectively on a face of a pair of of support plate；
The winding of the coil is clamped using the preparation formed body of the multiple plates formed by the composite material comprising magnetic powder
Portion, make the end of the lead division of the support plate and the coil be sequentially laminated on the side of the prepared formed body and with
The medial surface of molding metal mold is opposed to configuration in molding metal mold；And
In the molding metal mold, obtains the winder of the built-in coil and keep lying at least partially in for the support plate opposed
Face exposure formed body.
9. manufacturing method according to claim 8, wherein
The prepared formed body has recess portion, the end stacking of the lead division of the support plate and the coil in opposed side
On the bottom surface of the recess portion.
10. manufacturing method according to claim 9, wherein
The length on the direction orthogonal with the depth direction of bottom surface sections of the recess portion forms shorter than the length of opening portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018060546A JP6927115B2 (en) | 2018-03-27 | 2018-03-27 | Surface mount inductor and its manufacturing method |
| JP2018-060546 | 2018-03-27 |
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| Publication Number | Publication Date |
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| CN110310810A true CN110310810A (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910007169.2A Pending CN110310810A (en) | 2018-03-27 | 2019-01-04 | Face is installed by inductor and its manufacturing method |
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| JP (1) | JP6927115B2 (en) |
| CN (1) | CN110310810A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7187831B2 (en) * | 2018-06-13 | 2022-12-13 | Tdk株式会社 | coil parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010186910A (en) * | 2009-02-13 | 2010-08-26 | Toko Inc | Method of manufacturing mold coil |
| WO2011121947A1 (en) * | 2010-03-30 | 2011-10-06 | パナソニック株式会社 | Complex magnetic material, coil-embedded type magnetic element using the same, and manufacturing method thereof |
| JP2013110184A (en) * | 2011-11-18 | 2013-06-06 | Toko Inc | Surface-mounted inductor manufacturing method and surface-mounted inductor |
| CN106104719A (en) * | 2014-03-14 | 2016-11-09 | 松下知识产权经营株式会社 | Coil component and manufacture method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4714779B2 (en) * | 2009-04-10 | 2011-06-29 | 東光株式会社 | Manufacturing method of surface mount inductor and surface mount inductor |
-
2018
- 2018-03-27 JP JP2018060546A patent/JP6927115B2/en active Active
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2019
- 2019-01-04 CN CN201910007169.2A patent/CN110310810A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010186910A (en) * | 2009-02-13 | 2010-08-26 | Toko Inc | Method of manufacturing mold coil |
| WO2011121947A1 (en) * | 2010-03-30 | 2011-10-06 | パナソニック株式会社 | Complex magnetic material, coil-embedded type magnetic element using the same, and manufacturing method thereof |
| JP2013110184A (en) * | 2011-11-18 | 2013-06-06 | Toko Inc | Surface-mounted inductor manufacturing method and surface-mounted inductor |
| CN106104719A (en) * | 2014-03-14 | 2016-11-09 | 松下知识产权经营株式会社 | Coil component and manufacture method thereof |
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| Publication number | Publication date |
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| JP6927115B2 (en) | 2021-08-25 |
| JP2019175942A (en) | 2019-10-10 |
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