CN109509620A

CN109509620A - Coil device

Info

Publication number: CN109509620A
Application number: CN201811018800.0A
Authority: CN
Inventors: 春田克己; 熊谷胜; 岩仓正明
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 2017-09-15
Filing date: 2018-09-03
Publication date: 2019-03-22
Anticipated expiration: 2038-09-03
Also published as: JP7004142B2; JP2019054156A; CN109509620B

Abstract

The present invention provides the low level that can be realized coil device or slimming and is excellent in terms of thermal diffusivity, is further able to improve the coil device of the coupling of armature winding and secondary windings.A kind of coil device, has: a pair of plates conductor (31,32) is respectively provided with plate coil portion (311,321) and plate leading part (312,313,322,323)；Skeleton (20), the mode a pair of plates coil part (311,321) exposed respectively with plate leading part (312,313,322,323) are embedded at predetermined intervals on spool direction.Skeleton (20) between the coil part (311,321) for being located at a pair of plates conductor (31,32), has the core (28) that coiling (33) is able to carry out winding.

Description

Coil device

Technical field

The coil device properly used the present invention relates to transformer for example big as fever etc..

Background technique

It for example as we all know there are converter power transformer (converter shown in patent document 1 as coil device transformer).In the invention shown in the patent document 1, flat coil (edgewise coil) or plate line are used Circle.

However, in existing transformer, in order to make assemblability production etc. well and with flat coil or plate The mode that coil is housed inside the inside of skeleton is configured.Therefore, in existing transformer, it is necessary in the inside of skeleton Form the accommodation space for accommodating flat coil or plate coil.In addition, in order to which flat coil or plate coil are held It is contained in the inside of the accommodation space of skeleton and it is necessary to be set as that the Splittable skeleton structure of skeleton can be divided along spool direction.

Therefore, in the coil device of existing transformer etc., becoming large-sized for the skeleton of axis direction is wound, thus coil The low level of device or slimming are difficult.Further more, in existing coil device, in order to which the inside in skeleton is formed The worry for thering is the close property of coil and skeleton to become inadequate for accommodating the accommodation space of flat coil or plate coil, It and is insufficient by the heat dissipation generated heat by the energization of coil to outside by skeleton.Further more, in existing transformer In, it is that the coupling of armature winding and secondary windings is easy the structure become inadequate.

Existing technical literature

Patent document

Patent document 1: Japanese patent application discloses 2003-17334 bulletin

Summary of the invention

The present invention completes in view of such actual state, it is intended that providing a kind of coil device that can be realized It low level or slimming and is excellent in terms of thermal diffusivity, is further able to improve armature winding and secondary windings The coil device of coupling.

In order to achieve the above object, coil device according to the present invention, which is characterized in that have: a pair of plates conductor, It is respectively provided with plate coil portion and plate leading part；Skeleton is a pair of described flat in such a way that the plate leading part exposes respectively Board coil portion is embedded at predetermined intervals on spool direction；Described between the coil part for being located at a pair of plane conductor Skeleton has the core that coiling is able to carry out winding.

In coil device according to the present invention, a pair of plates coil part is on spool direction at predetermined intervals by for example Insert part forming (insert molding) etc. and be embedded to skeleton, thus It is not necessary in carcasing for accommodating plate line The space in circle portion.In addition, also It is not necessary to be set as that the structure of skeleton can be divided in winding axis direction.In addition, being located at one Has the core that coiling is able to carry out winding to the skeleton between the coil part of plane conductor.Therefore, skeleton can be thinned The thickness in spool direction, and facilitate low level or the slimming of coil device.

In addition, plate coil portion be embedded to the inside of skeleton and coiling is wound in the core of skeleton and be formed with around Line coil part.Therefore, the close property of any coil part and skeleton becomes well, and the fever of coil part is transmitted to bone well Frame, so that the thermal diffusivity by skeleton improves.In addition, skeleton is preferably made of high thermal conductivity component.

Further more, coiled wire-wound coil portion is sandwiched between the coil part of a pair of plates conductor, the coupling between these coil parts is mentioned It is high.In addition, coiled wire-wound coil portion is primary side coil portion, plate coil portion is secondary side coil portion, but it is opposite to be also possible to it.

It is preferred that the winding outer diameter (coiled wire-wound coil of the outer diameter in the plate coil portion and the coiling for being wound in the core The outer diameter in portion) it is substantially consistent, and the winding of the internal diameter in the plate coil portion and the coiling for being wound in the core It is interior substantially consistent through (internal diameter in coiled wire-wound coil portion).With this configuration, the coupling between these coil parts improves.

It is preferred that the through hole entered in the center pillar portion that the center of the core is formed with magnetic core.With this configuration, To be become easy to the installation of the magnetic core of skeleton.

It is preferred that being respectively formed with end spaced walls flange at the both ends in the spool direction of the core, it is being located at these The periphery of the core between the spaced walls flange of end is formed with winding spaced walls flange, is being located at the winding spaced walls Around the core between flange and the end spaced walls flange, the coiling is wound with regulation the number of turns, institute State the inside that plate coil portion is embedded to the end spaced walls flange.

With this configuration, so that coiled wire-wound coil portion becomes at a distance from plate coil portion via the spaced walls flange of skeleton Closely, so as to improving their coupling.In addition, being easy to make the outer of the outer diameter in coiled wire-wound coil portion and internal diameter and plate coil portion Diameter and internal diameter are consistent, and based on the point also the coupling between coil part can improve.

It is preferred that the end outer surface in the spool direction of the skeleton, the external connecting of terminal and spool direction phase It protrudes in parallel, the plate leading part is protruded in the outer lateral external connecting direction outstanding of the skeleton.

With this configuration, to seek the list with the side for being configured at spool direction to the coil device of low level The connection of the circuit substrate of side end etc. becomes easy.In addition, the unilateral end of another party in the coiling direction of coil device Because wiring etc. becomes to be not necessarily to, by the way that framework or cooling body are contacted with the unilateral side end so as to well It radiates to the heat for being transmitted to skeleton from coil part.In addition, magnetic can be passed through in the case where magnetic core is installed in skeleton The heat for being passed to skeleton is rejected heat to framework or cooling body well by property core.In order to improve the heat transfer of skeleton and magnetic core Property, they can also be fixed with binder.

It is preferred that the middle part of the terminal is embedded to the inside of the skeleton, be connected to the middle part of the terminal around Line interconnecting piece with external connecting direction substantially at right angles to external prominent, the end of the coiling of the skeleton I.e. leading part is guided by being formed in the extraction channel of the skeleton and is connected to the coiling interconnecting piece.

With this configuration, so that the wiring of the leading part of the coiling relative to terminal becomes easy and it is possible to realize lines The low level of coil apparatus.

Alternatively, the spool direction of the skeleton both ends respectively it is formed integrally have it is prominent to the spool direction respectively Terminal board out, each terminal board, which has, to be generally parallel to each other on the direction substantially at right angles with the spool direction Long shape, the external connecting of terminal quilt in such a way that the bottom surface of the end of the longitudinal direction from each terminal board is outstanding Installation, the plate leading part are prominent from the bottom surface of the terminal board to external connecting direction outstanding.

With this configuration, so as to seeking the slimming of coil device.In addition, matching substantially in parallel with being configured in The connection of the circuit substrate of the bottom surface side for a pair of terminal platform set etc. becomes easy.In addition, the bottom surface of terminal board becomes and circuit The stationary plane of substrate etc. seeks the major part of the coil device of slimming to become not by the face of the coverings such as circuit substrate, thus Heat dissipation area increases.As a result, it is possible to increase the thermal diffusivity of coil device.

In addition, in the case where magnetic core is installed in skeleton skeleton can will be passed to well by magnetic core Heat reject heat to exterior space.In order to improve the conductivity of heat of skeleton and magnetic core, they can also be fixed with binder.In addition, The band that magnetic core is excellent in terms of can also being used in heat conductivity etc. is fixed.

It is preferred that the middle part of the terminal is embedded to the inside of the terminal board, it is connected to the middle part of the terminal Coiling interconnecting piece is prominent from the end face of the terminal board, and end, that is, leading part of the coiling is by being formed in the bottom of the terminal board The extraction channel in face and be guided and be connected to the coiling interconnecting piece.

With this configuration, so that the wiring of the leading part of the coiling relative to terminal becomes easy, and it is possible to realize The slimming of coil device.

It is preferred that the major part of magnetic core is configured along the terminal board.With this configuration, so as to seeking coil The slimming of the device and assembling of coil device becomes easy.

Detailed description of the invention

Figure 1A is the perspective view of transformer involved in an embodiment of the invention.

Figure 1B is the exploded perspective view of transformer represented by Figure 1A.

Fig. 2 is the perspective view for observing transformer represented by Figure 1A from different angles.

Fig. 3 is the sectional view along the transformer of III-III line represented by Figure 1A.

Fig. 4 is the sectional view along the transformer of IV-IV line represented by Figure 1A.

Fig. 5 is the side view for indicating the use state of transformer represented by Figure 1A.

Fig. 6 is the circuit diagram of transformer represented by Figure 1A.

Fig. 7 A is the perspective view of transformer involved in other embodiments of the invention.

Fig. 7 B is the exploded perspective view of transformer represented by Fig. 7 A.

Fig. 8 is the perspective view of the transformer represented by Fig. 7 A from bottom surface side.

Fig. 9 is the sectional view along the transformer of IX-IX line represented by Fig. 7 A.

Figure 10 is the sectional view along the transformer of X-X line represented by Fig. 7 A.

Figure 11 is the sectional view along the transformer of XI-XI line represented by Fig. 7 A.

Figure 12 is the circuit diagram of transformer represented by Fig. 7 A.

The explanation of symbol

10,10a ... transformer

20,20a ... skeleton

21,21a ... skeleton main body

211 ... keep using protrusion

22 ... the 1st pedestals

The 1st terminal board of 22a ...

22a1 ... insertion groove

221 ... sidewall portions

222,222a ... extraction channel

223 ... separation protrusions

224 ... engaging protuberances

23 ... the 2nd pedestals

The 2nd terminal board of 23a ...

23a1 ... insertion groove

231 ... sidewall portions

232 ... pins keep protrusion

24,25 ... end spaced walls flanges

241 ... lead notch

26,27 ... winding spaced walls flanges

261 ... lead notch

Notch is used in 262 ... coilings connection

28 ... cores

29 ... stem through holes

The 1st plane conductor of 31,31a ...

The 1st plate coil portion 311,311a ...

The 1st plate leading part of 312,313,312a, 313a ...

The 2nd plane conductor of 32,32a ...

The 2nd plate coil portion 321,321a ...

The 2nd plate leading part of 322,323,322a, 323a ...

33,34 ... coilings

331,341 ... coiled wire-wound coil portions

332,333,342,343 ... coiling leading parts

35,36 ... terminals

351,361 ... coiling interconnecting pieces

352,362 ... external connectings

37 ... engagement members

38 ... supporting pins

40,40a ... magnetic core (core)

401 ... upper cores

The 1st core of 401a ...

402 ... lower cores

The 2nd core of 402a ...

44 ... base portions

46 ... center pillar portions

48 ... lateral column portions

50 ... covers

52 ... cover main body portions

54 ... hooking sheets

56 ... lateral column guide pins

60 ... bottom plates

62 ... ora terminalis

70 ... bands (belt)

100 ... circuit substrates

102 ... frameworks.

Specific embodiment

Hereinafter, represented embodiment illustrates the present invention with reference to the accompanying drawings.

1st embodiment

Transformer 10 as coil device involved in present embodiment shown in FIG. 1 is used for such as EV (Electric Vehicle: electric transportation equipment), PHV (Plug-in Hybrid Vehicle: plug-in hybrid vapour Vehicle) or commuting the vehicles (commuter) (vehicle) vehicle-mounted charger or home-use or industry electricity consumption gas set The power circuit etc. of standby power circuit or computer equipment.

As shown in Figure 1B, the core (magnetic which has skeleton 20, is made of upper core 401 and lower core 402 Property core) 40.In addition, X-axis, Y-axis and Z axis are orthogonal in the accompanying drawings, Z axis corresponds to the height (thickness) of transformer 10 simultaneously And it is parallel to the spool of coil part described below.In addition, the longitudinal direction phase one of the base portion 44 in Y-axis and core 401,402 It causes.Further more, X-axis is consistent with the direction that the 1st pedestal 22 of skeleton 20 and the 2nd pedestal 23 are arranged.

Skeleton 20 has skeleton main body 21, the mutual phase to be located at X-direction on the top of the Z-direction of skeleton main body 21 The mode tossed about is formed integrally in the 1st pedestal 22 of skeleton main body 21 and the 2nd pedestal 23.The skeleton main body 21 of skeleton 20 has There is the core 28 for being formed with stem through hole 29.

End spaced walls flange 24,25 is formed at the both ends of the Z-direction of core 28.Each end spaced walls are convex Edge 24,25 is with being roughly parallel to the plane (XY plane) comprising X-axis and Y-axis to the outer expandable of core 28.In addition, The peripheral part of core 28 between the Z-direction of end spaced walls flange 24,25, with these end spaced walls flanges 24,25 is generally parallelly integrally formed to the winding spaced walls flange 26 of the outer expandable of core 28.

As shown in figure 3, between the end spaced walls flange 24 for being located at the top of Z-direction and winding spaced walls flange 26 It is formed with the 1st zoning slot S1, between the end spaced walls flange 25 for being located at the lower section of Z-direction and winding spaced walls flange 26 It is formed with the 2nd zoning slot S2.The width of the Z-direction of each zoning slot S1, S2 is not particularly limited, it is preferred that being big Width in 1 times of the line footpath of coiling 33 and less than 2 times can also be greater than 2 times.The Z of further preferred each zoning slot S1, S2 The width of axis direction is the width that only 1 coiling 33 can be wound with regulation the number of turns.

The groove depth (relative to spool, the length of radial direction) of each zoning slot S1, S2 be set as 1 circle or more (1 layer with On) coiling 33 enter depth, in the present embodiment, the coiling 33 for being preferably set to 3~8 circles is able to carry out the depth of winding Degree.The groove depth of each zoning slot S1, S2 correspond to the radius of the spaced walls flange 24~26 from the outer peripheral surface of core 28 Direction length, it is preferably all identical, but can also be different.

It is preferred that being formed with coiling connection notch at least part of the circumferencial direction of winding spaced walls flange 26 262.Each zoning slot S1, S2 can be connected by the coiling connection notch 262, and notch is passed through with a coiling 33 262 and each zoning slot S1, S2 are wound in multiple regulation circles.As winding method, preferably α winding, but it is also possible to Other winding method.By being located at end spaced walls flange 24,25 and winding the core 28 between spaced walls flange 26 Surrounding is to provide that the number of turns winds coiling 33, to form coiled wire-wound coil portion 331.

Coiling 33 can be constituted with single line or or be constituted with the twisted wire of litz wire etc..The line footpath of coiling 33 is not It is particularly limited to, it is preferred that being the range of 1.0~4.0mm.Coiling 33 is made of the conductor wire of metal wire etc., but can also To be insulating wrapped coiling.

In addition, being embedded in the 1st plate coil portion 311 of the 24, the 1st tabular conductor 31 of end spaced walls flange, holding 2nd plate coil portion 321 of the 25, the 2nd tabular conductor 32 of portion's spaced walls flange is embedded in.As shown in Figure 1B, the 1st tabular is led 1st plate coil portion 311 of body 31 has the ring plate shape of substantially 1 circle amount, which is embedded to end interval as shown in Figure 3 The inside of wall flange 24.In addition, likewise, the 2nd plate coil portion 321 of the 2nd tabular conductor 32 has substantially 1 circle amount Ring plate shape, the part are embedded to the inside of end spaced walls flange 24 as shown in Figure 3.

The 1st plate leading part 312,313 is respectively formed at the both ends in the 1st plate coil portion 311.Each 1st plate Leading part 312,313 is in 23 side of the 2nd pedestal of skeleton 20 from the outside pleurapophysis in end face of the X-direction of end spaced walls flange 24 Out, and towards the top of Z axis bending forming is carried out.In addition, being respectively formed with the 2nd at the both ends in the 2nd plate coil portion 321 Plate leading part 322,323.Each 2nd plate leading part 322,323 is in 23 side of the 2nd pedestal of skeleton 20 from end spaced walls The end face of the X-direction of flange 25 protrudes outward, and carries out bending forming towards the top of Z axis.

2nd plate lead of the 1st plate leading part 312 of one side from the position outstanding of end spaced walls flange 24 and a side From the position outstanding of end spaced walls flange 25 positional shift occurs in the Y-axis direction for portion 322, in the present embodiment, along The Y direction of skeleton 20 is located at opposite side.In addition, the 1st plate leading part 313 of another party is prominent from end spaced walls flange 24 Position and another party the 2nd plate leading part 323 from the position outstanding of end spaced walls flange 25 phase one in the Y-axis direction It causes.

But in the present embodiment, make the 1st plate leading part 313 to the curved position in the top of Z axis and by the 2nd The curved position in the top of plate leading part 323 to Z axis deviates in the X-axis direction.That is, making the 2nd plate leading part 323 to Z The curved position in the top of axis is in the X-axis direction than the curved position in the top of the 1st plate leading part 313 to Z axis to be set to More lateral.Each leading part 313,323 of the position consistency of Y direction for example can also be in the circuit substrate represented by Fig. 5 It is electrically connected on 100 equal external circuits.

In the present embodiment, by advance with punch process etc. to the 1st plane conductor 31 and the 2nd represented by Figure 1B Plane conductor 32 is formed, these plate coil portions 311,321 are configured to the inside of mold, and infuses to skeleton 20 It is moulded into shape (insert part forming) etc., so as to integrated with skeleton 20.The bending forming of each leading part 312,313,322,323 Preprocessing can be carried out after the insert part forming or before it.

In order to be easy to carry out the coiling 33 to the core 28 of skeleton 20 winding operation and it is preferred that coiling 33 volume Terminate to carry out the bending forming with the integrated each leading part 312,313,322,323 of skeleton 20 later around operation.

In the present embodiment, plane conductor 31,32 by the metals such as such as copper, aluminium, tin, nickel or their alloy etc. Electric conductivity plate constitute.The thickness of plane conductor 31,32 is not particularly limited, it is preferred that being 0.3~0.8mm.? On the surface of plane conductor 31,32, particularly on the surface of leading part 312,313,322,323 can also with for improve with Implement plating processing or surface roughening treatment for the purpose of close property of the engagement member of solder etc. etc..

As shown in Fig. 2, the Z-direction upper surface for being integrally formed in the end spaced walls flange 24 of skeleton 20 is (also single below The 1st pedestal 22 singly referred to as " upper surface ") has sidewall portion 221.In the back side (X-direction of skeleton 20 of sidewall portion 221 Outside) be formed with respectively guide coiling leading part 332,333 a pair of of extraction channel 222,222.These extraction channels 222, 222 are separated by separation protrusion 223, ensure that their insulation.

Each channel 222 has will be from the top of upper surface to the Z axis of the 1st pedestal 22 a pair of of engaging protuberances 224 outstanding As respective center, and respective coiling leading part 332,333 can turn around the substantially U-shaped of (U-turn).Engage convex Portion 224, sidewall portion 221 and separation protrusion 22 are integrally formed in skeleton main body 21.

35 insert part forming of terminal is in each engaging protuberances 224 in such a way that the middle part of each terminal 35 is embedded in.Terminal The end face of 35 coiling interconnecting piece 351 from the X-direction of engaging protuberances 224 is prominent to X-direction.In addition, the outside of terminal 35 Upper direction of the interconnecting piece 352 from the upper surface of engaging protuberances 224 to Z-direction is prominent.The coiling interconnecting piece of connection terminal 35 351 and external connecting 352 L-shaped shape middle section be embedded to engaging protuberances 224 inside and integration.

In the present embodiment, terminal 35 is made of the electric conductivity pin of shape generally L-shaped as a whole, but can also be by The electric conductivity plate of shape generally L-shaped is constituted.The material of terminal 35 is if it is conductive material then without special Restriction, may be exemplified copper, copper alloy etc..

Each coiling leading part 332,333 is tied respectively and is connected to each coiling interconnecting piece 351,351.It can also be right The coiling interconnecting piece 351,351 that coiling leading part 332,333 has been tied respectively carries out the engagement using solder or utilizes to swash The engagement of light or the engagement for utilizing other engagement means such as electric resistance welding.Coiling leading part 332,333 is to constitute represented by Fig. 4 Coiled wire-wound coil portion 331 coiling 33 both ends.

As shown in figure 4, lead notch 261 is formed in the X-axis of coiling connection notch 262 in winding spaced walls flange 26 The opposite side in direction draws one end i.e. leading part 332 for being wound in the coiling 33 of the inside of the 2nd zoning slot S2 represented by Fig. 3 Lead the top of Z-direction.The notch depth that coiling connects notch 262 is preferably to reach the periphery of core 28 as shown in Figure 3 The depth in face.In addition, lead represented by Fig. 4 is preferably 1 times or more of the line footpath of coiling 33 with the notch depth of notch 261, But there is no particular limitation.

As shown in Figure 1B, a part of shape is similar to the sidewall portion 231 of the sidewall portion 221 of the 1st pedestal 22 with to Z-direction Mode outstanding is integrally formed in the 2nd of the opposite side of the X-direction of the 1st pedestal 22 positioned at end spaced walls flange 24 Seat 23.Because being configured with the base portion 44 of upper core 401, these sidewall portions between sidewall portion 221 and sidewall portion 231 221,231 in order to sandwich base portion 44 Y direction central portion and have suitable shape.

2nd pedestal 22 has the width of the Y direction width greater than the 1st pedestal 22, and pin keeps protrusion 232 to be integrally formed in The two sides of its Y direction.Pin keep protrusion 232, by the top of Z axis direction it is outstanding in a manner of be formed with each Support pin 38.For these supporting pins 38 also with terminal 35 and plane conductor 31,32 is identical, is integrally formed with insert part forming etc. Skeleton 20.

Supporting pin 38 is made of material identical with terminal 35 in the present embodiment, but might not it is necessary to phase Same material is constituted.Supporting pin 38 might not it is necessary to conductive.The projecting height of the Z-direction of supporting pin 38 is excellent The projecting height of choosing and the external connecting 352 of terminal 35 is same degree, as shown in figure 5, preferably penetrating circuit substrate 100 degree.In addition, the projecting height of each plate leading part 312,313,322,323 it is also preferred that as shown in Figure 5 with support Pin 38 is identical, higher than upper core 401 upper surface and penetrate the degree of circuit substrate 100.

Skeleton 20 is constituted such as the plastics by PPS, PET, PBT, LCP, nylon, but can also be by other insulating component structures At.But in the present embodiment, as skeleton 20, preferably for example by the plastics structure of pyroconductivity up to 1W/mK or more At, such as be made of PPS, nylon etc..

As shown in Figure 1B, core 401,402 be same shape in the present embodiment, has E font in section on the section Z-Y Shape, and constitute so-called E type core.In addition, the form of core 401,402 is not limited to form represented by Fig. 2, such as it is also possible to Core 401,402 difference it is formed integrally, or be also possible to core 401,402 be divided into respectively it is multiple.

Core 401,402 is respectively provided with the base portion 44 extended in the Y-axis direction, from the Y direction of base portion 44 Both ends to Z-direction a pair of of lateral column portion 48,48 outstanding, between these lateral column portions 48,48 from the center of Y direction to Z axis Direction carries out center pillar portion 46 outstanding.

Center pillar portion 46 is inserted into the inside of the stem through hole 29 of skeleton 20 from the top of Z-direction and lower section. As shown in figure 3, the front end of center pillar portion 46,46 can contact and be docked in the inside of the stem through hole 29 of skeleton 20, Can be with gap as defined in clipping and opposite mode is constituted.In addition, by forming gap so as to the width corresponding to gap It spends and adjusts leakage characteristics.

As shown in Figure 1B, center pillar portion 46,46 have in the mode consistent with the inner peripheral surface shape of stem through hole 29 It is generally cylindrical shaped, but its shape is not particularly limited, and can also be matched with stem and be carried out with the shape of through hole 29 Variation.In addition, lateral column portion 48,48 has the inside concave curve surface shape for the outer peripheral surface shape for being matched with skeleton main body 21, appearance Mask is parallel to the plane of XZ plane (plane comprising X-axis and Z axis).In the present embodiment, the material of each core 401,402 Matter can enumerate the soft magnetic material of metal, ferrite etc., but there is no particular limitation.

Transformer 10 involved in present embodiment is by each component represented by assembling figure 1B and by coiling volume 33 The core 28 of skeleton 20 is around in manufacture.Hereinafter, illustrating an example of the manufacturing method of transformer 10 using Figure 1B etc. Son.In the production of transformer 10, firstly, preparing skeleton 20.The material of skeleton 20 is not particularly limited, but skeleton 20 It is formed by the insulating materials of resin etc..

In skeleton 20, as described above, the plate coil portion 311,321 of plane conductor 31,32 is to be embedded to each interval The mode of the inside of wall flange 24,25 is integrated by insert part forming.In addition, side of the middle part of terminal 35,36 to be embedded in 1st pedestal 22 of the formula by insert part forming and with skeleton 20 is integrated.Further more, the lower end of supporting pin 38 in a manner of being embedded in by Insert part forming and it is integrated with the 2nd pedestal 23.

Then, coiling 33 is wound in the periphery of the core 28 of skeleton 20 by α winding, and forms coiled wire-wound coil portion 331.It as coiling 33, is not particularly limited, but is suitable for using litz wire etc..In addition, the both ends of coiling 33 i.e. around Line leading part 332,333 after the coiling interconnecting piece 351,351 for being bound in a pair of terminal 35 respectively as shown in Figure 2 for example It is connected by welding.

After winding operation, as needed, by the plate leading part 312,313,323,322 of plane conductor 31,32 to The top of Z axis carries out bending machining.In addition, plate leading part 312,313 can also be bent in advance.This is because not becoming The obstacle of the winding operation of coiling 33.

Then, as shown in Figure 1B, core 401,402 is installed from the up and down direction of Z-direction.That is, making the center pillar of core 401,402 46,46 front end has gap and engages the front end of lateral column 48,48 each other each other.In addition, gap is also possible to 0.

In the transformer 10 involved in present embodiment, such as shown in figure 3, a pair of plates coil part 311,321 in Z Skeleton 20 is embedded to by such as insert part forming etc. at predetermined intervals in axis direction, in skeleton 20, it is not necessary that production is used for Accommodate the space in plate coil portion 311,321.In addition, also It is not necessary to be set as that skeleton 20 can be divided in winding axis direction Structure.In addition, the skeleton 20 between the coil part 311,321 for being located at a pair of plates conductor 31,32, having coiling 33 can be rolled up Around core 28.Therefore, the thickness of the Z-direction of skeleton 20 can be thinned, and facilitate the low level of transformer 10 Or slimming.

In addition, plate coil portion 311,321 is embedded to the inside of skeleton 20 and coiling 33 is wound in the volume of skeleton 20 Core 28 and form coiled wire-wound coil portion 331.Therefore, the close property of any coil part 311,321,331 and skeleton 20 becomes good Good, coil part 311,321,331 fever is passed to skeleton 20 well, and is improved by the thermal diffusivity of skeleton 20.

Further more, coiled wire-wound coil portion 331 is sandwiched between the coil part 311,321 of a pair of plates conductor 31,32, these lines Coupling between circle portion 311,331,321 improves.In addition, as shown in fig. 6, in the present embodiment, coiled wire-wound coil portion 331 is first Grade lateral coil portion, plate coil portion 311,321 is secondary side coil portion, but it is opposite to be also possible to it.

In addition, in the present embodiment, as shown in figure 3, the outer diameter in plate coil portion 311,321 and being wound in core The winding outer diameter (outer diameter in coiled wire-wound coil portion 331) of 28 coiling 33 is substantially consistent.In addition, plate coil portion 311,321 Internal diameter is substantially consistent through (internal diameter in coiled wire-wound coil portion 331) in the winding for the coiling 33 for being wound in core 28.Pass through It constitutes in this way, so that the coupling between these coil parts 311,331,321 further increases.

In addition, the through hole 29 entered in the center pillar portion 46 that the center of the core 28 of skeleton 20 is formed with magnetic core 40. With this configuration, to be become easy to the installation of the magnetic core 40 of skeleton 20.

Further more, in the present embodiment, as shown in figure 3, being respectively formed with end at the both ends of the Z-direction of core 28 Portion's spaced walls flange 24,25 is formed with volume in the periphery of the core 28 between these end spaced walls flanges 24,25 Around spaced walls flange 26.Coiling 33 is wound in regulation the number of turns is located at winding spaced walls flange 26 and end spaced walls flange 24, Around core 28 between 25, plate coil portion 331,321 is embedded to the inside of end spaced walls flange 24,25.

With this configuration, so that the distance in coiled wire-wound coil portion 331 and plate coil portion 311,321 is via between skeleton 20 Bulkhead flange 24,25 and become close, so as to improve their coupling.In addition, be easy to make the outer diameter in coiled wire-wound coil portion 331 and The outer diameter and internal diameter in internal diameter and plate coil portion 311,321 are consistent, also can be improved coil part 311,331 according to the point, Coupling between 321.

Further more, in the present embodiment, as shown in figure 5, the end outer surface of the Z-direction in skeleton 20, terminal 35 External connecting 352 is protruded parallelly with Z-direction, X-axis of the plate leading part 312,313,322,323 in skeleton 20 It is dashed forward with the projecting height of same degree in the outer identical direction in direction outstanding that laterally carried out with external connecting 352 in direction Out.

With this configuration, so that external connecting 352 and the perforation of plate leading part 312,313,322,323 are configured Circuit substrate 100 in the upper end of the Z-direction for the transformer 10 for seeking low level, on the upper surface of substrate 100 Connection becomes easy.In addition, having supporting pin 38, upper end and the external connecting 352 of supporting pin 38 in the 2nd pedestal 23 Upper end is protruded in the same manner, so the upper end of supporting pin 38 also through substrate 100, to make relative to substrate 100 The positioning of transformer 10 and fixing intensity improve.

In addition, because wiring etc. becomes unnecessary on the downside end of the Z-direction of transformer 10, by by frame Body 102 or cooling body are contacted with its downside end so as to well to the coil part 311,321,331 represented by Fig. 3 The heat for being transmitted to skeleton 20 radiates.

In addition, because magnetic core 40 is installed in skeleton 20 and the Z-direction lower surface of magnetic core 40 (also has below Only the case where being referred to as " lower surface " or " bottom surface ") it is contacted with framework 102 etc., so can be by magnetic core 40 well The heat for being passed to skeleton 20 is rejected heat into framework 102 or cooling body.In order to improve the heat transfer of skeleton 20 Yu magnetic core 40 Property, they can also be fixed with binder.

As shown in Fig. 2, in the present embodiment, the middle part of each terminal 35 is embedded to the 1st pedestal 22 of skeleton 20 Engaging protuberances 224 inside.Be connected to the coiling interconnecting piece 351 of the middle part of terminal 35 with external connecting 352 at big It causes on the direction at right angle to prominent outside the X-direction of skeleton 20.End, that is, leading part 332,333 of coiling 33 is used by lead Notch 261,241 and extraction channel 222 guide and are connected to coiling interconnecting piece 351.With this configuration, thus relative to The wiring of the leading part 332,333 of the coiling 33 of terminal 35 becomes easy and it is possible to realize the low levels of transformer 10.

2nd embodiment

As its skeleton of the transformer 10a of coil device involved in present embodiment represented by Fig. 7 A~Figure 12 20a Mutually common and main structural element is mutually common with transformer 10 involved in the 1st embodiment for inside, but coil The external structure difference of spool direction difference and skeleton 20a.Hereinafter, mainly to transformer involved in the 1st embodiment 10 different parts are described in detail, and the part of Xiang Gongtong illustrates omission a part.In addition, in the accompanying drawings will be mutually common Symbol is marked in the component mutually common with the 1st embodiment, illustrates also to omit a part.

As shown in Figure 7 B, the core that transformer 10a has skeleton 20a, is made of the 1st core 401a and the 2nd core 402a (magnetic core) 40a.In addition, in the accompanying drawings, X-axis, Y-axis and Z axis are orthogonal, the height that Z axis corresponds to transformer 10 is (thick Degree).In addition, the longitudinal direction of Y-axis and the base portion (major part) 44 in core 401a, 402a is consistent.Further more, X-axis and bone The direction that the 1st terminal board 22a of frame 20a and the 2nd terminal board 23a are arranged is consistent, and is parallel to line described below The spool in circle portion.

Skeleton 20a has skeleton main body 21a, to be located at the mutual of X-direction in the lower part of the Z-direction of skeleton main body 21a The mode of phase opposite side the 1st terminal board 22a and the 2nd terminal board 23a formed integrally in skeleton main body 21a.Skeleton 20a Skeleton main body 21a have and be formed with the core 28 of stem through hole 29.1st terminal board 22a and the 2nd terminal board 23a There is elongated shape respectively along Y-axis, and configure parallel to each other.Skeleton 20a is by the skeleton 20 with the 1st embodiment Identical material is constituted.

As shown in figure 9, being formed with end spaced walls flange 24,25 at the both ends in X-axis (spool) direction of core 28. Each end spaced walls flange 24,25 and the plane (ZY plane) comprising Z axis and Y-axis are generally parallelly to core 28 Outer expandable.In addition, the peripheral part of the core 28 between the Z-direction for being located at end spaced walls flange 24,25, with these End spaced walls flange 24,25 is generally parallelly to 26,27 one of the winding spaced walls flange of the outer expandable of core 28 Forming.

The shape between the end spaced walls flange 24 for being located at the top of X-direction along X-axis and winding spaced walls flange 26 1 zoning slot S1 of Cheng You is formed with the 2nd zoning between winding spaced walls flange 26 and winding spaced walls flange 27 along X-axis Slot S2 is formed with the 3rd zoning slot S3 between end spaced walls flange 25 and winding spaced walls flange 27.Each zoning slot S1 The width in the spool direction of~S3 is identical as zoning slot S1~S2 of the 1st embodiment.The groove depth of each zoning slot S1~S3 (relative to spool, the length of radial direction) is also identical as the groove depth of the 1st embodiment.

As shown in Figure 10, coiling connection preferably is formed at least part of the circumferencial direction of winding spaced walls flange 26 With notch 262.Each zoning slot S1, S2 can be connected by the coiling connection notch 262, and logical with a coiling 33 It crosses notch 262 and is wound in each zoning slot S1 with multiple regulation circles, S2.In addition, likewise, it is preferred that convex in winding spaced walls At least part of the circumferencial direction of edge 27 is also formed with notch (illustration omitted) identical with coiling connection notch 262.

As the winding method of coiling 33, preferably α is wound but it is also possible to be other winding method.By to provide circle Coiling 33 is wound in the core 28 between end spaced walls flange 24,25 and winding spaced walls flange 26,27 by number Around, to form coiled wire-wound coil portion 331.

In the present embodiment, it is located at end by being wound in the auxiliary coiling 34 different from coiling 33 with regulation the number of turns Around core 28 between portion's spaced walls flange 24,25 and winding spaced walls flange 26,27, thus formation and coiled wire-wound coil Different coiled wire-wound coil portion 341, portion 331.In the present embodiment, the number of turns with the coiling 33 for constituting coiled wire-wound coil portion 331 (is rolled up Winding number) N33 compares, and the number of turns N34 for constituting the coiling 34 in coiled wire-wound coil portion 341 is less.Such as N34/N33 is 1/8~1/ 24。

In addition, coiling 34 is identical as coiling 33 can be made of single line or or with the twisted wire structure of litz wire etc. At.The line footpath of coiling 33 is not particularly limited, it is preferred that be the range of 0.2~0.8mm, the line footpath of coiling 34 can also be with It is same degree with coiling 33, but in the present embodiment, it is the 1/3~1/5 of the line footpath of coiling 33.

As shown in figure 9, it is embedded to the 1st plate coil portion 311a of the 1st tabular conductor 31a in end spaced walls flange 24, The spaced walls flange 25 in end is embedded to the 2nd plate coil portion 321a of the 2nd tabular conductor 32a.As shown in Figure 7 B, the 1st is flat The 1st plate coil portion 311a of Sheet Conductor 31a has the ring plate shape of substantially 1 circle amount, which is embedded in as shown in Figure 9 To the inside of end spaced walls flange 24.In addition, likewise, the 2nd plate coil portion 321a of the 2nd tabular conductor 32a has The ring plate shape of substantially 1 circle amount, the part are embedded to the inside of end spaced walls flange 24 as shown in Figure 9.

The 1st plate leading part 312a, 313a are respectively formed at the both ends of the 1st plate coil portion 311a.Each 1st Plate leading part 312a, 313a are bent to shape generally L-shaped in the inside of the 1st terminal board 22a of skeleton 20a, and from the 1st The lower surface of the Z-direction of terminal board 22a protrudes outward.

In addition, being respectively formed with the 2nd plate leading part 322a, 323a at the both ends of the 2nd plate coil portion 321a.It is each 2nd plate leading part 322a, 323a is bent to shape generally L-shaped in the inside of the 2nd terminal board 23a of skeleton 20a, and from The lower surface of the Z-direction of 2 terminal board 23a protrudes outward.

1st plate leading part 312a, 313a carries out position outstanding and the 2nd plate leading part from the 1st terminal board 22a 322a, 323a are substantially uniform in the Y-axis direction from the 2nd terminal board 23a progress position outstanding, in the present embodiment, along The X-direction of skeleton 20a is located at opposite side.

1st tabular conductor 31a and the 2nd tabular conductor 32a and the 1st tabular conductor 31 of the 1st embodiment with And the 2nd tabular conductor 32 be formed in the same manner, and be integrally formed skeleton 20a in the same way.In present embodiment In, plane conductor 31a, 32a are made of the plane conductor 31 with the 1st embodiment, 32 identical materials, and having the same Thickness.

In the present embodiment, as shown in figure 8, the 1st plate leading part 312a, 313a is from the following table of the 1st terminal board 22a Face is protruded along Z axis, and the 2nd plate leading part 322a, 323a dashes forward from the lower surface of the 2nd terminal board 23a along Z axis Out.Then, the core 28 of skeleton 20 be located at the 1st plate leading part 312a, 313a and the 2nd plate leading part 322a, 323a it Between (along X-axis).

Therefore, it is not necessarily to after coiling 33,34 is wound in core 28 and forms coiled wire-wound coil portion 331,341 Bending machining plate leading part 312a, 313a, 322a, 323a.In addition, in the core that coiling 33,34 is wound in skeleton 20 When 28, cover 50 is removed from skeleton 20a.

As shown in Fig. 8 and Figure 11, in the lower surface point of the Z-direction of the 1st terminal board 22a and the 2nd terminal board 23a It is not formed with extraction channel 222a.The extraction channel 222a of one side will be by that will be wound in a side of the coiling 33,34 of core 28 The guiding groove that the end i.e. leading part 332,342 of a side is directed to the Y direction end face of the 1st terminal board 22a is constituted.Another party Extraction channel 222a by the leading part 333 of i.e. another party in end of another party of the coiling 33,34 of core 28 will be wound in, 343 guiding grooves for being directed to the Y direction end face of the 2nd terminal board 23a are constituted.

As shown in Figure 7 A, the end face and the 2nd terminal board 22b of the Y direction of the 1st terminal board 22a same side Y-axis side To end face, with coiling interconnecting piece 351,361 respectively to the outside of Y axis direction mode outstanding, terminal 35 and 36 inserts at Shape is in skeleton 20a.

The coiling interconnecting piece 351 of each terminal 35 X-direction outer fix from each terminal board 22a, the Y-axis of 23a Direction end face is prominent to the outside of Y direction.In addition, the external connecting 352 of each terminal 35 is in coiling interconnecting piece 351 Nearby in the outer fix of Y direction from each terminal board 22a, the Z-direction lower end of 23a is prominent towards the downside of Z-direction.

The coiling interconnecting piece 361 of each terminal 36 the inside than coiling interconnecting piece 351 closer to X-direction position from The Y direction end face of each terminal board 22a, 23a are prominent to the outside of Y direction.In addition, the external connecting of each terminal 36 362 near coiling interconnecting piece 361 in the outer fix of Y direction from each terminal board 22a, the Z-direction lower end surface of 23a It is prominent to the downside of Z-direction.

In the present embodiment, 4 its Z-direction positions of coiling interconnecting piece 351,361,361,351 are roughly the same, in X Positional shift occurs in axis direction.In addition, 4 its Y direction positions of external connecting 352,362,362,352 are roughly the same, Corresponding to 4 coiling interconnecting pieces 351,361,361,351 X-direction position and positional shift occurs in the X-axis direction.

The middle section of the L-shaped shape of the coiling interconnecting piece 351 and external connecting 352 of connection terminal 35 is embedded to end Sub- platform 22a, the inside of the end of a side of the Y direction of 23a are simultaneously integrated.In addition, identical about terminal 36.Terminal 35,36 external connecting 352,362 from terminal board 22a, the projecting height that the lower surface of 23a is risen preferably with it is above-mentioned flat Plate leading part 312a, 313a, 322a, 323a from terminal board 22a, the projecting height that the lower surface of 23a is risen is roughly the same.? In present embodiment, circuit substrate etc. is installed in terminal board 22a, the lower surface of 23a.

In the present embodiment, terminal 35,36 are made of the electric conductivity pin of shape generally L-shaped as a whole, but can also To be made of the electric conductivity plate of shape generally L-shaped.The material of terminal 35,36 is identical as the 1st embodiment.

As shown in figure 8, in each terminal board 22a, on the end face of a side of the Y direction of 23a, coiling leading part 332, 333 are tied respectively and are connected to each coiling interconnecting piece 351,351 in the outside for being configured at X-direction.Equally, at each end Sub- platform 22a, on the end face of a side of the Y direction of 23a, coiling leading part 342,343, which is tied respectively and is connected to, is configured at X Each coiling interconnecting piece 361,361 of the inside of axis direction.

As shown in Figure 7 A, the coiling interconnecting piece 351,351 being tied respectively in coiling leading part 332,333 and coiling The coiling interconnecting piece 361,361 that leading part 342,343 has been tied respectively, is formed with the engagement member using solder or laser etc. 37。

As shown in Figure 7 B, the core 401 of the shape Yu the 1st embodiment of the core 401a, 402a of present embodiment, 402 is different, But structure having the same, it can also be formed separately and be integrated, or can also be divided into respectively multiple.

Core 401a, 402a are respectively provided with the base portion 44 extended in the Y-axis direction, the Y direction from base portion 44 Both ends to X-direction a pair of of lateral column portion 48,48 outstanding, between these lateral column portions 48,48 from the center of Y direction to X Axis direction center pillar portion 46 outstanding.

Center pillar portion 46 is inserted into the inside of the stem through hole 29 of skeleton 20 from the left and right directions of X-direction.Such as Fig. 9 Shown, in the inside of the stem through hole 29 of skeleton 20a, the front end of center pillar portion 46,46 can contact and be docked, can also be with To clip defined gap, opposite mode is constituted.In addition, by formed gap so as to correspond to gap width and Adjust leakage characteristics.

As shown in Figure 7 B, center pillar portion 46,46 have in the mode consistent with the inner peripheral surface shape of stem through hole 29 It is generally cylindrical shaped, but its shape is not particularly limited, and can also be matched with stem and be carried out with the shape of through hole 29 Variation.In addition, lateral column portion 48,48 has the inside concave curve surface shape for being matched with 21 outer peripheral surface shape of skeleton main body, outer surface With the plane for being parallel to XZ plane (plane comprising X-axis and Z axis).In the present embodiment, each core 401a, the material of 402a Matter is identical as the 1st embodiment.

Cover 50 is each configured between the inner peripheral surface in lateral column portion 48,48 and the outer peripheral surface of skeleton main body 21.The cover of cover 50 Main body 52 has the shape as the periphery of the skeleton main body 21 between terminal board 22a and 23a in covering skeleton 20 Shape.Curved hooking sheet 54 is carried out with generally vertical direction towards skeleton main body 21 from cover main body 52 and is integrally formed in cover main body The both ends of 52 X-direction.In a pair of of hooking sheet 54 that the two sides of the X-direction of cover main body 52 are formed to sandwich skeleton main body 21 X-direction upper and lower surface mode be mounted.

Prolonged in Y axis direction in addition, being formed with respectively in the both ends outer surface of the Z-direction of cover main body 52 The lateral column guide pin 56 stretched.The inner surface in lateral column portion 48,48 is contacted with the cover main body 52 being located between a pair of of lateral column guide pin 56 Outer surface, the movement of the X axis direction in lateral column portion 48,48 limited by a pair of of lateral column guide pin 56.These cover 50 preferably by with bone The insulating component of the identical plastics of frame 20 etc. is constituted, but can also be consisted of metal.

In the present embodiment, the base portion 44 of core 401a is configured on the 1st terminal board 22a, the pedestal of core 402a Portion 44 is configured on the 2nd terminal board 23a.Therefore, the X-direction thickness of base portion 44 preferably with each terminal board 22a, The X-direction width of 23a is roughly the same or is set to below it.It is set in this way, so that the Z of transformer 10a be thinned The thickness of axis direction becomes easy.

In addition, as shown in Figure 7 B, in the both ends of the surface of the X-direction of skeleton main body 21a, preferably being protected from the two sides of Z-direction Each core 401a is held, the holding protrusion 211 of the base portion 44 of 402a and skeleton main body 21a are integrally formed.Holding protrusion 211 outside preferably from the end face of the X-direction of skeleton 21a towards X-direction is protruded with en plaque.In addition, keeping using The interior shape of protrusion 211 has the shape of the shape for the Z-direction two sides for being matched with base portion 44.In addition, being configured at Z The holding of the downside of axis direction protrusion 211 and each terminal board 22a, the upper surface integration of 23a.

Transformer 10a involved in present embodiment by each component represented by assembling figure 7B and by coiling 33, 34 are wound in the core 28 of skeleton 20a to be manufactured.The transformer of the manufacturing method of transformer 10a and the 1st embodiment 10 manufacturing method is identical.

In the transformer 10a involved in present embodiment, it can obtain identical with the transformer 10 of the 1st embodiment Function and effect, and also there are following function and effect.

As shown in Figure 7 B, in the transformer 10a of present embodiment, at the both ends in the spool direction of skeleton 20a, respectively It is formed integrally have terminal board 22a, 23a outstanding are carried out on spool direction.Each terminal board 22a, 23a have with spool The shape for the length being generally parallel to each other in the Y-direction substantially at right angles of direction.As shown in figure 8, the external connecting of terminal 35,36 352,362 are mounted with carrying out mode outstanding from the bottom surface of each terminal board 22a, the end of the longitudinal direction of 23a.In addition, Plate leading part 312a, 313a, 322a, 323a are protruded from terminal board 22a, the bottom facing external interconnecting piece 52,362 of 23a Direction it is prominent.

With this configuration, so that it is possible to realize the slimmings of the X-direction of transformer 10a as shown in Figure 7 A.In addition, with It is configured in the company of circuit substrate (illustration omitted) of bottom surface side of a pair of terminal platform 22a, 23a configured substantially in parallel etc. It connects and becomes easy.In addition, the bottom surface of terminal board 22a, 23a become the stationary plane with circuit substrate etc., the change of slimming is sought The major part of depressor 10a becomes not by the face of the coverings such as circuit substrate, so that heat dissipation area increases.As a result, it is possible to make transformation The thermal diffusivity of device 10a increases.The transformer 10a of present embodiment, which is especially, has the knot for being suitable for being cooled with forced air cooling type Structure.

In addition, can will be passed well by magnetic core 40a because magnetic core 40a is installed in skeleton 20a The heat for being delivered to skeleton 20a rejects heat to exterior space.In order to improve the conductivity of heat of skeleton 20a Yu magnetic core 40a, they can also be with It is fixed with binder.In addition, magnetic core 40a can also be used in the band 70 that be excellent in terms of heat conductivity it is equal and and skeleton 20a is fixed together.

In addition, in the present embodiment, as shown in FIG. 8 and 9, end, that is, leading part 332,333 of coiling 33,34, 342,343 are formed on terminal board 22a, and the extraction channel 222a of the bottom surface of 23a is guided and is connected to each coiling interconnecting piece 351,361.With this configuration, thus the leading part 332,333,342,343 of the coiling 33,34 relative to terminal 35,36 Wiring becomes easy and it is possible to realize the slimmings of transformer 10a.

As shown in figure 12, in the present embodiment, coiled wire-wound coil portion 331 and coiled wire-wound coil portion 341 are primary side coil Portion, plate coil portion 311a, 321a are secondary side coil portion, but it is opposite to be also possible to it.

In addition, being able to carry out various changes within the scope of the invention the present invention is not limited to above-mentioned embodiment. For example, it is also possible to combine the one of the structural element of a part of the transformer of the 1st embodiment and the transformer of the 2nd embodiment Partial structural element assembles transformer or other coil devices.

Claims

1. a kind of coil device, it is characterised in that:

Have:

A pair of plates conductor is respectively provided with plate coil portion and plate leading part；And

Skeleton, in such a way that the plate leading part exposes respectively, a pair of plate coil portion is on spool direction with regulation Interval is embedded in,

The skeleton between the coil part for being located at a pair of plane conductor, has the core that coiling is able to carry out winding Portion.

2. coil device as described in claim 1, it is characterised in that:

The outer diameter in the plate coil portion and the winding outer diameter for the coiling for being wound in the core are substantially consistent, described flat The internal diameter in board coil portion is interior through substantially consistent with the winding for the coiling for being wound in the core.

3. coil device as described in claim 1 or 2, it is characterised in that:

In the center of the core, it is formed with the through hole that the center pillar portion of magnetic core enters.

4. the coil device as described in any one in claims 1 to 3, it is characterised in that:

At the both ends in the spool direction of the core, it is respectively formed with end spaced walls flange, between these ends The periphery of the core between bulkhead flange is formed with winding spaced walls flange, is being located at the winding spaced walls flange Around the core between the end spaced walls flange, the coiling is wound with regulation the number of turns,

The plate coil portion is embedded to the inside of the end spaced walls flange.

5. the coil device as described in any one in Claims 1 to 4, it is characterised in that:

End outer surface in the spool direction of the skeleton, the external connecting of terminal are dashed forward parallelly with the spool direction Out,

The plate leading part carries out direction outstanding in the outer lateral external connecting of the skeleton and is protruded.

6. coil device as claimed in claim 5, it is characterised in that:

The middle part of the terminal is embedded to the inside of the skeleton, is connected to the coiling interconnecting piece of the middle part of the terminal With prominent to the outside of the skeleton with external connecting direction substantially at right angles,

The leading part of end as the coiling is guided by the extraction channel for being formed in the skeleton and is connected to the coiling Interconnecting piece.

7. the coil device as described in any one in Claims 1 to 4, it is characterised in that:

At the both ends in the spool direction of the skeleton, the difference oriented spool direction terminal board outstanding formed integrally,

Each terminal board has the shape for the length being generally parallel to each other on the direction substantially at right angles with the spool direction Shape,

The external connecting of terminal is mounted in such a way that the bottom surface of the end of the longitudinal direction from each terminal board is outstanding,

The plate leading part is prominent from the bottom surface of the terminal board to external connecting direction outstanding.

8. coil device as claimed in claim 7, it is characterised in that:

The middle part of the terminal is embedded to the inside of the terminal board, is connected to the coiling connection of the middle part of the terminal Portion is prominent from the end face of the terminal board,

The leading part of end as the coiling is guided and is connected to by the extraction channel for being formed in the bottom surface of the terminal board The coiling interconnecting piece.

9. the coil device as described in claim 7 or 8, it is characterised in that:

The major part of magnetic core is configured along the terminal board.