CN104715907A - Transformer - Google Patents

Abstract

There are provided a thin transformer capable of being used in a thin display device such as a liquid crystal display (LCD) device, a light emitting diode (LED) device, and a flat panel display device including the thin transformer. The transformer includes a bobbin part including inner and outer bobbins each including a pipe shaped body part having a though-hole formed in an inner portion thereof and a flange part protruding outwardly from both ends of the body part; coils respectively wound around the inner and outer bobbins, and a core electromagnetically coupled to the coils to thereby form a magnetic path, wherein the outer bobbin includes a support part formed at the flange part formed at an upper end of the body part of the outer bobbin so as to cover a portion of the through-hole, and the inner bobbin is coupled to the outer bobbin while having one end supported by the support part.

Description

Transformer

The application to be the application number submitted on 07 04th, 2011 applying date be 201110191334.8 the divisional application of application for a patent for invention " transformer and possess the flat display devices of this transformer ".

Technical field

The present invention relates to the slim transformer that can be applied to the thin display devices such as such as LCD display device, LED display.

Background technology

In recent years, in display industry, the new technology-flat-panel monitor (FPD:Flat Panel Display) being applicable to the multimedia system such as high-resolution and large-scale picture replaces CRT (Cathode Ray Tube: cathode ray tube) to get most of the attention.

Especially, in large-scale displays, the thin displays such as such as LCD (Liquid Crystal Display) TV or PDP (Plasma Display Panel) TV are subject to people and attract attention, and expect to continue to receive publicity in price and market in the future.

Wherein, up to the present LCD TV uses cold-cathode fluorescence lamp (CCFL:Cold CathodeFluorescent Lamp) as backlight (backlight), but consider the multiple advantage of the aspects such as consumed power, life-span and environmental protection recently, adopt LED (Light Emitting Diode) to increase gradually as the situation of backlight.

Along with the use of LED, backlight unit (backlight unit) becomes miniaturized, and this makes the thickness of dull and stereotyped TV (Flat TV) also thinning gradually.Further, at present, the internal power supply module of dull and stereotyped TV is also required slimming (SLIM).

In existing transformer, coil is generally winding into perpendicular to tellite.And, unshakable in one's determination to form the form configuration being parallel to the magnetic circuit of tellite.Accordingly, the leak flux major part of transformer forms magnetic circuit by the space (or the space between tellite and transformer) between bonnet and transformer.

Therefore, because the space of existing transformer between bonnet and transformer is distributed with leak flux on the whole, thus time for realizing the slimming of display equipment and making the narrower intervals between bonnet and transformer, interfere between the bonnet of metal material and leak flux, cause bonnet to occur vibrate and produce noise.

And existing transformer needs to drop into very many labours in process of production.That is, in production process, a lot of part is completed by handwork.Therefore, be in fact restricted in the reliability boosted productivity or guarantee product.

Summary of the invention

The present invention proposes to solve the problem, its object is to provide a kind of can in thin display device etc. easy-to-use slim transformer.

And another object of the present invention is to provide the transformer that can automatically produce and the flat display devices possessing this transformer.

And another object of the present invention is to provide that possess can easily in conjunction with the structure of indivedual roll, easily to carry out the transformer automatically produced and the flat display devices possessing this transformer.

Transformer provided by the invention comprises: roll portion, comprises inner side roll and outside roll, and inner side roll and outside roll possess the inner main part forming the tubulose of through hole and the flange part externally given prominence at the two ends of described main part; Coil, coiling is in described inner side roll and described outside roll respectively; And it is unshakable in one's determination, form the magnetic circuit be combined with described coil electromagnetism, described outside roll possesses support portion, this support portion covers a part for described through hole from the flange part of upper end of the main part being formed at described outside roll, and its one end of roll, described inner side can be supported in described support portion and be combined with described outside roll.

In an embodiment of the present invention, the through hole of described outside roll can be formed as making the sectional area of upper end to be different from the sectional area of lower end according to described support portion.

In an embodiment of the present invention, described inner side roll can possess at least one and insert protruding, the outstanding upper side being formed at the flange part formed in the main part upper end of described inner side roll of this insertion projection.

In an embodiment of the present invention, described outside roll forms at least one patchhole on described support portion, and the described insertion projection of described inner side roll is inserted in described patchhole, and described inner side roll is combined with outside roll thus.

In an embodiment of the present invention, be interference fit in described patchhole according to described insertion projection, described inner side roll can be fixedly installed in described outside roll.

In an embodiment of the present invention, the described flange part inside face of described inner side roll can be arranged in identical plane with the described flange part inside face of described outside roll.

In an embodiment of the present invention, a wherein place in the described flange part upper side of described inner side roll and the described support portion bottom surfaces of described outside roll is outstanding to be formed with at least one and to insert projection, corresponding to being formed with described position of inserting projection, another place can be formed for inserting protruding patchhole described in Intercalation.

In an embodiment of the present invention, described inner side roll and described outside roll can possess external connection terminals respectively, and this external connection terminals is connected to the one end of the described flange part (following is lower flange portion) formed on the lower end of described main part.

In an embodiment of the present invention, described inner side roll and described outside roll can be combined into and make the described external connection terminals of described inner side roll be arranged in contrary direction with the described external connection terminals of described outside roll.

In an embodiment of the present invention, the external connection terminals of described inner side roll, its upper side can contact with the lower flange portion bottom surfaces of described outside roll and support described outside roll.

In an embodiment of the present invention, described outside roll possesses enlarged portion, and this enlarged portion extends towards the outside at the other end in the described lower flange portion contacted with the external connection terminals of described inner side roll, and expands the area in described lower flange portion.

In an embodiment of the present invention, described outside roll possesses coil transfer portion, be used as by coiling in the described coil of described main part lead-in wire by the periphery of described flange part along be transferred to described flange part bottom surfaces and with the path of described external connection terminal sub-connection.

In an embodiment of the present invention, described coil transfer portion can comprise: transfer groove, moves to the path of the bottom surfaces of described flange part as the lead-in wire making coiling in the described coil of described main part; And across path, as the path making the described lead-in wire shifted by described transfer groove arrange across the bottom surfaces of described flange part.

In an embodiment of the present invention, described outside roll can possess terminal connection part, one end is externally outstanding and formed for the described flange part (being lower flange portion below) that this terminal connection part is formed in described main part lower end, and is connected with described external connection terminals.

In an embodiment of the present invention, described coil transfer portion can be the outstanding side by side and path between the bootstrap block that formed of described terminal connection part and the bottom surfaces in described lower flange portion and described terminal connection part.

In an embodiment of the present invention, its one end of described guide hump in the periphery in described lower flange portion along externally outstanding and formed, the groove that described transfer groove can be the one end must given prominence to by described bootstrap block, described terminal connection part and described lower flange portion are formed.

In an embodiment of the present invention, described terminal connection part possesses the multiple lead-out grooves be formed between multiple described external connection terminals, and multiple described lead-in wire can via described transfer groove or described lead-out groove and described external connection terminal sub-connection.

In an embodiment of the present invention, described coil transfer portion also can possess at least one guiding groove, this guiding groove forms channel-shaped in the bottom surfaces of described terminal connection part, to be converted to across the described lead-in wire on path the direction being furnished with described external connection terminals described in being arranged in.

In an embodiment of the present invention, described guiding groove is divided into multiple guiding groove by multiple next door, and at least one next door in described next door can be formed as one end and project to described across in path.

In an embodiment of the present invention, multiple described next door can be made to project to described different across the distance in path.

In an embodiment of the present invention, multiple described next door can be made to get over disposed adjacent in described transfer groove, project to across the distance in path shorter.

In an embodiment of the present invention, multiple described next door can form chamfered section at the corner part with described wire contacts.

In an embodiment of the present invention, multiple described next door be formed as making with the corner part of described wire contacts can with formation right angle, bottom surface or acute angle.

And the transformer according to the embodiment of the present invention can also comprise: outside roll, possess inner form the tubulose of through hole main part and cover the part of described through hole and the support portion that formed in the either end of main part; And inner side roll, be inserted in the through hole of described outside roll, and one end of inner side roll contacts with face, described support portion and is combined with described outside roll.

In an embodiment of the present invention, wherein one side in the exterior face of the described support portion inside face of described outside roll and one end of described inner side roll is outstanding is formed with at least one insertion projection, corresponding to being formed with described position of inserting projection, another side can be formed for inserting protruding patchhole described in Intercalation.

And transformer provided by the invention comprises: roll portion, comprise multiple roll, and multiple roll possess the inner main part forming the tubulose of through hole and the flange part externally given prominence at the two ends of described main part respectively; External connection terminals, is connected to one end of flange part described at least one; And at least one coil, the space that coiling is formed in the outer peripheral face of described main part and the one side of described flange part, multiple lead-in wires of described coil dispersible the one side and another side that are arranged in described flange part and are connected to described external connection terminals, to prevent mutual intersection.

In an embodiment of the present invention, described roll portion can comprise outside roll and inner side roll, described outside roll possesses support portion, this support portion covers described through hole in the either end of described main part and is formed, described inner side roll is inserted in the through hole of described outside roll and contacts with described support portion, and is combined with described inner side roll.

And the flat display devices that the embodiment of the present invention provides can comprise: power suppling part, be arranged on substrate by transformer described at least one and formed; Display pannel, receives power supply supply from described power suppling part; And lid, in order to protect described display pannel and described power suppling part.

In an embodiment of the present invention, the described coil of described transformer can be winding into the described substrate-parallel with described power suppling part.

In an embodiment of the present invention, the described substrate of described power suppling part forms through poroid resettlement section in inside, described transformer is contained in this resettlement section and is installed on described substrate.

Transformer provided by the invention possesses the multiple rolls (such as, inner side roll and outside roll) be separated individually, and possesses the structure in conjunction with these rolls.Accordingly, after separately coiling is carried out to each roll, there are indivedual rolls of coil in conjunction with coiling, make to complete transformer.Thus, production process can be made to become automation, thus there is the advantage of required expense and time when minimizing manufacture.

And, transformer provided by the invention inner side roll and outside roll in conjunction with time, inner side roll is to be contained in the combination of shape and state of roll inside, outside.Accordingly, transformer whole remains smooth slim, therefore can easily be applied to slim display equipment etc.

Further, in transformer provided by the invention, inner side roll and outside roll in conjunction with time, inner side roll is supported in the through hole covering outside roll and the support portion formed and be combined with each other.Now, inner side roll is combined with outside roll by the patchhole that the protruding Intercalation to the support portion of outside roll of insertion that its flange part is formed is formed.Accordingly, can easily by inner side roll secure bond in outside roll, and the inner side roll completing combination can not be separated from outside roll easily.

And transformer provided by the invention possesses lead-in wire as coil from coil transfer portion across the path of roll of the bottom surfaces of roll.That is, in transformer provided by the invention, coil not only by lead-out groove and external connection terminal sub-connection, can also pass through coil transfer portion and external connection terminal sub-connection.

Accordingly, because the lead-in wire of coil by multiple Path Connection to external connection terminals, therefore can prevent the problem of the short circuit caused because of the Contact of lead-in wire.

And when transformer provided by the invention is installed on substrate, the coil of transformer maintains the state with substrate-parallel ground coiling.So, when coil and the coiling of substrate-parallel ground, the interference between leak flux and outside (such as, bonnet) that transformer produces can be minimized.

Therefore, even if transformer is installed to slim display equipment, also can minimize the interference between the leak flux of transformer generation and the bonnet of display equipment, therefore can prevent the display equipment caused because of transformer from producing the phenomenon of noise.Accordingly, slim display equipment can be easily applied to.

Accompanying drawing explanation

Fig. 1 is for roughly illustrating the stereogram of the transformer that the embodiment of the present invention provides;

The exploded perspective view that Fig. 2 illustrates for the transformer shown in exploded view 1;

Fig. 3 is the cutaway view of the D-D ' line along Fig. 1;

Fig. 4 is for illustrating the stereogram of the bottom surface of the transformer shown in Fig. 1;

Fig. 5 is the ground plan of the transformer shown in Fig. 1;

Fig. 6 is for roughly illustrating the stereogram of the transformer that another embodiment of the present invention provides;

Fig. 7 A is for roughly illustrating the exploded perspective view of the flat display devices that the embodiment of the present invention provides;

Fig. 7 B is the partial sectional view of the E-E ' line of Fig. 7 A.

Primary symbols illustrates: 1 is flat display devices, 40 is unshakable in one's determination, 50 is coil, 50a is primary winding, 50b is secondary coil, 300 is transformer, 210 is roll portion, 220 is inner side roll, 230 is outside roll, 221, 231 is through hole, 222, 232 is main part, 223, 233 is flange part, 223a, 233a is upper flange portion, 223b, 233b is lower flange portion, 234 terminal connection parts, 226, 236 is external connection terminals, 228 is protruding for inserting, 235 is lead-out groove, 238 is patchhole, 239 is support portion, 270 is coil transfer portion, 272 is transfer groove, 274 is across path, 276 is guiding groove, 278 is bootstrap block.

Embodiment

Before the present invention will be described in detail, it should be noted that the term that this specification and claims book of following explanation uses or word should not be confined to the meaning of common dictionary and explain, should based on for illustrating that it is invented by the method for the best, inventor suitably can define the principle of the concept of term, is the meaning and the concept of technological thought according to the invention by terminological interpretation.Therefore, the embodiment that this specification is recorded and the formation shown in accompanying drawing are only the preferred embodiments of the present invention, the technological thought that the present invention is whole can not be represented, thus for this application, the equivalent or variation that also may exist and replace preferred embodiment should be understood.

Below, the preferred embodiments of the present invention are described with reference to the accompanying drawings.Now, the identical inscape should noticed in accompanying drawing uses identical symbol to represent as far as possible.And, for likely omitting the detailed description that purport of the present invention produces known function and the formation obscured.Based on identical reason, in accompanying drawing, part inscape is represented turgidly or is omitted or roughly illustrates, the size of each inscape does not represent actual size.

Below, embodiments of the invention are described with reference to the accompanying drawings.

Fig. 1 is for roughly illustrating the stereogram of the transformer that the embodiment of the present invention provides, and the exploded perspective view that Fig. 2 illustrates for the transformer shown in exploded view 1, Fig. 3 is the cutaway view of the D-D ' line along Fig. 1.

And Fig. 4 is for illustrating the stereogram of the bottom surface of the transformer shown in Fig. 1, and Fig. 5 is the ground plan of the transformer shown in Fig. 1.

Referring to figs. 1 through Fig. 5, the transformer 100 that the present embodiment provides comprises roll portion 210, coil 50 and iron core 40.

Roll portion 210 comprises outside roll 230 and roll 220 inside at least one.

Inner side roll 220 comprises: inside center is formed with the main part 222 of the tubulose of through hole 221; The flange part 223 formed to the external diameter direction expansion of main part 222 at the two ends of main part 222; For with the external connection terminals 226 of external electrical, physical connection and the terminal connection part 224 being connected with described external connection terminals 226.

The through hole 221 being formed at the inside of main part 222 is utilized as the passage inserting a part of unshakable in one's determination 40 described later.In the present embodiment, form rectangle for the cross section of through hole 221.This shape corresponding to the iron core 40 be inserted in through hole 221 is formed, but inner side of the present invention roll 220 is not limited thereto, and may correspond to the shape in the iron core 40 be inserted in through hole 221, forms the through hole 221 of variform.

Flange part 223 divides into upper flange portion 223a and lower flange portion 223b according to forming position.And the space utilization formed between the outer peripheral face of main part 222, upper flange portion 223a and lower flange portion 223b is that coil 50 described later is by the space of spiral.Thus, flange part 223 play two sides support spiral in main part 222 outer peripheral face coil 50 effect while, also play from outer protection coil 50, and guarantee the effect of the insulating properties between outside and coil 50.

The side of the lower flange portion 223b of inner side roll 220 forms the terminal connection part 224 for connecting external connection terminals 226.Terminal connection part 224 in the side of lower flange portion 223b towards the outside direction (that is, direction, bottom) outstanding and formed, and can to possess for inserting spiral at least one lead-out groove 225 of the lead-in wire of the coil 50 of inner side roll 220.The lead-in wire of coil 50 leads to the outside of inner side roll 220 by lead-out groove 225.

In addition, in the present embodiment, schematically illustrate the situation utilizing lead-out groove 225 lead-in wire of coil 50 to be led to the outside of inner side roll 220, but the present invention is not limited thereto.Such as, through hole 231 inner rim making the size of the lower flange portion 223b of inner side roll 220 be less than outside roll 230 can be had, and utilize consequent gap the lead-in wire of coil 50 to be led to the multiple application of the outside of inner side roll 220 etc.

External connection terminals 226 can be connected to terminal connection part 224 highlightedly from terminal connection part 224 to the external diameter direction of main part 222 or direction, bottom.And the upper side of the external connection terminals 226 that the present embodiment provides can contact with the lower flange portion 233b of outside described later roll 230 and support outside roll 230.

And inner side roll that the present embodiment provides 220 and outside described later roll 230 are combined into one type, for this reason, the upper flange portion 223a of inner side roll 220 are formed at least one and insert projection 228.Insert the patchhole 238 that protruding 228 are inserted in outside roll 230.Accordingly, insert protruding 228 correspond to the size of patchhole 238 and position and formed.To this, what will be described below illustrates in further detail in the explanation of outside roll 230.

Outside roll 230 is configured to the shape similar with inner side roll 220, and is formed as the thickness approximate with the thickness of inner side roll 220, only there are differences in size.

The same with inner side roll 220, outside roll 230 possesses inside center and forms the main part 232 of tubulose of through hole 231, flange part 233, terminal connection part 234 and external connection terminals 236.Therefore, for the incomplete structure specific description identical with inner side roll 220, only the structure being different from inner side roll 220 is described in detail.

The internal run-through hole 231 being formed at main part 232 is utilized as the space of inner side roll 220 Intercalation.Thus, the shape of the through hole 231 outside roll 230 formed is formed as the shape on the edge, flange part 233 periphery corresponding to inner side roll 220.

And the space utilization formed between main part 232 outer peripheral face of outside roll 230 and the one side (that is, inside face) of flange part 233 is the space of spiral coil 50 described later.

One end of lower flange portion 233b forms the terminal connection part 234 for connecting external connection terminals 236, and the other end forms enlarged portion 233b '.

Enlarged portion 233b ' is formed as the form extended towards the outside by lower flange portion 233b at the other end of lower flange portion 233b, thus the area of the other end of expansion lower flange portion 233b.In the transformer 100 that the present embodiment provides, inner side roll 220 and outside roll 230 in conjunction with time, be configured to the inner side external connection terminals 226 of roll 220 and contact with the bottom surfaces of the lower flange portion 233b of outside roll 230 and roll 230 outside supporting.Now, the external connection terminals 226 of inner side roll 220 and the spiral distance between the coil 50b of outside roll 230 is very close, therefore may destroy insulation each other.

But, the lower flange portion 233b other end of the outside roll 230 of the transformer 100 that the present embodiment provides possesses enlarged portion 233b ', therefore easily can guarantee insulation distance between the coil 50b of outside roll 230 of the inner side external connection terminals 226 of roll 220 and spiral and creepage distance.

Thus, the distance that the enlarged portion 233b ' that the present embodiment provides externally expands can guarantee insulation distance between the coil 50b of outside roll 230 of external connection terminals 226 and spiral and creepage distance.

And, according to this enlarged portion 233b ', for the other end of the flange part 233 of outside roll 230, the area of upper flange portion 233a and lower flange portion 233b can be made to be formed as different.

In addition, flange part 233 other end of outside roll 230 is formed as extending sufficiently long state, even if when the other end therefore not expanding lower flange portion 233b also can guarantee described insulation distance and creepage distance, can omit enlarged portion 233b '.

Terminal connection part 234 is formed as the form of externally giving prominence in one end of lower flange portion 233b.Particularly, the terminal connection part 234 that the present embodiment provides be formed as described lower flange portion 233b to the outer direction and lower side to extend string configuration.Now, two ends forming the terminal connection part 234 of strip are formed as form externally outstanding further on edge, the periphery of lower flange portion 233b respectively.

Accordingly, as shown in Figure 5, the overall width W2 of terminal connection part 234 is greater than the overall width W1 of the lower flange portion 233b of outside roll 230.

Preset space length that the terminal connection part 234 that this present embodiment provides is separated by is furnished with multiple external connection terminals 236.External connection terminals 236 can be connected to terminal connection part 234 to the external diameter direction of main part 232 or lower side to outstanding form with the end at terminal connection part 234.

And, on terminal connection part 234, can be formed the wires guides of coil 50 between each external connection terminals 236 to multiple lead-out grooves 235 of external connection terminals 236.

So, according to the structure of terminal connection part 234, spiral is electrically connected in the lead-in wire of the coil 50 of outside roll 230 via lead-out groove 235 and external connection terminals 236.

In addition, the feature of the transformer 100 that the present embodiment provides be in order to by the wires guides of secondary coil 50b to external connection terminals 236, not only utilize described lead-out groove 235 also to utilize coil transfer portion 270 described later.

As shown in Figures 4 and 5, the transformer 100 that the present embodiment provides possesses coil transfer portion 270.

Coil transfer portion 270 provides so a kind of path, namely spiral is connected to the path of external connection terminals 226 by the periphery of outside roll 230 along the exterior face (that is, bottom surfaces) being transferred to lower flange portion 233b not by terminal connection part 234 in the lead-in wire 50b ' of the secondary coil 50b of outside roll 230.

The coil transfer portion 270 that this present embodiment provides is formed according to bootstrap block 278 and terminal connection part 234, and comprises transfer groove 272, across path 274 and guiding groove 276.

Bootstrap block 278 is formed at the bottom surfaces of outside roll 230, i.e. on the bottom surfaces of lower flange portion 233b.Bootstrap block 278, for while guaranteeing the creepage distance between the outside external connection terminals 236 of roll 230 and the primary winding 50a of inner side roll 220, provides the passage of the lead-in wire 50b ' arranging secondary coil 50b in the bottom of outside roll 230.

For this reason, the space of bootstrap block 278 between terminal connection part 234 and through hole 231 that the present embodiment provides is given prominence to, and be arranged as along with the form of terminal connection part 234 direction arranged side by side across lower flange portion 233 bottom surfaces of outside roll 230.

And at least one end in two ends of the bootstrap block 278 that the present embodiment provides is formed as externally giving prominence at the lower flange portion 233b of outside roll 230.Now, the space utilization between one end of externally outstanding bootstrap block 278 and terminal connection part 234 one end is transfer groove 272.

As mentioned above, transfer groove 272 is the grooves formed by one end of bootstrap block 278 outstanding along Vertical dimension outside in the periphery of lower flange portion 233b and one end of terminal connection part 234 and the lower flange 233b that possesses between.This transfer groove 272 is utilized as spiral is transferred to roll 230 bottom, outside path in the lead-in wire 50b ' of the secondary coil 50b of outside roll 230.

In addition, in the present embodiment, schematically illustrate and give prominence to the outside of one end lower portion flange part 233b of terminal connection part 234 along with bootstrap block 278 and form the situation of transfer groove 272.But the present invention is not limited thereto, multiple formation can also be had.Such as, bootstrap block 278 is not given prominence to one end of terminal connection part 234, groove etc. is formed by removing the part of the lower flange portion 233b be between bootstrap block 278 and terminal connection part 234, as long as groove can be formed on edge, the periphery of lower flange portion 233b, the groove of various form can be used.

Across path 274 for being formed at the passage between bootstrap block 278 and terminal connection part 234, provide the passage across lower flange portion 233b.The path that this lead-in wire 50b ' being utilized as the secondary coil 50b making to be shifted by transfer groove 272 across path 274 is arranged along the length direction of terminal connection part 234.

Guiding groove 276 is formed as channel-shaped in the bottom surfaces of terminal connection part 234, and is utilized as the passage that the lead-in wire 50b ' making to be arranged in across the secondary coil 50b in path 274 is connected to external connection terminals 236.That is, the lead-in wire 50b ' be arranged in across the secondary coil 50b in path 274 is transferred to the direction being furnished with external connection terminals 236 by guiding groove 276.

For this reason, guiding groove 276 is formed as the form of broad ways across terminal connection part 234, and one end with across path 274 UNICOM, the other end opens to the outside of terminal connection part 234.

This guiding groove 276 is corresponding to the quantity be arranged in across the quantity of multiple lead-in wire 50b ' on path 274 or the external connection terminals 236 of connection respective lead 50b ', and multiple guiding groove 276 is arranged side by side.

Now, multiple guiding groove 276 can be divided mutually by multiple next door 237.

Next door 237 can be separated by layout at certain intervals, and guiding groove 276 can be divided into each independent groove separately by next door 237.Accordingly, be arranged in across the multiple lead-in wires on path 274 are supported by next door 237 (especially, corner part) and be arranged into guiding groove 276 inside.

Now, along with lead-in wire 50b ' contacts with the corner in next door 237, lead-in wire 50b ' is exceedingly bent in contact portion or is bent.Therefore, the next door 237 that provides of the present embodiment forms chamfered section 237 ' in the corner in the next door 237 directly contacted with lead-in wire 50b '.In Fig. 5 and Fig. 6, schematically illustrate the situation that chamfered section 237 ' forms curved surface.But the present invention is not limited thereto, can also exist and chamfered section 237 ' is formed as the multiple application such as inclined plane.

And the length in each next door 237 in multiple next doors 237 that the present embodiment provides also can be mutually different.Particularly, the part of the one end connected with across path 274 in the next door 237 that the present embodiment provides can project to across in path 274, and the distance that now each next door 237 is outstanding can be mutually different.

As shown in Figure 5, the next door 237 that the present embodiment provides is formed as the closer to transfer groove 272, and the outstanding distance of its one end is shorter, and more arranges away from transfer groove 272, then the outstanding distance of one end is longer.

Next door 237 adopts the reason of this structure to be, when the quantity of the lead-in wire 50b ' of the coil 50b shifted by transfer groove 272 is multiple, the lead-in wire 50b ' due to transfer is avoided between lead-in wire 50b ', to cause the problems such as short circuit with the state arrangement mutually kinked or be entangled with.

That is, in the transformer that the present embodiment provides, the position of lead-in wire 50b ' is decided to be, and makes the lead-in wire 50b ' by each next door 237 supports be arranged in mutually different positions according to the protrusion distance in next door 237.Thus, even if multiple lead-in wire 50b ' is transferred by transfer groove 272, each lead-in wire 50b ' also across overlap path 274 in, and can not can be arranged side by side, thus can to prevent the above-described problem from occurring.

The coil transfer portion 270 that the present embodiment as constructed as above provides is arranged the lead-in wire 50b ' of secondary coil 50b, and the process that this lead-in wire 50b ' is connected to external connection terminals 236 is as follows.

Spiral connects in the secondary coil 50b of the outside roll 230 50b ' spiral that finally goes between in external connection terminals 236.Now, the lead-in wire 50b ' of secondary coil 50b is connected with external connection terminals 236 after being connected to external connection terminals 236 via aforementioned lead-out groove 235 or moving to the bottom surfaces of outside roll 230 by coil transfer portion 270.

The lead-in wire 50b ' being drawn to lead-out groove 235 can be connected to external connection terminals 236 immediately.

In contrast, if when lead-in wire 50b ' is connected to external connection terminals 236 by coil transfer portion 270, lead-in wire 50b ' moves to the bottom surfaces of outside roll 230 by transfer groove 272.And, lead-in wire 50b ' be disposed in be formed at outside roll 230 bottom surfaces across after in path 274, supported and its path break-in guiding groove 276 by next door 237, be connected with external connection terminals 236 thus.

In the present embodiment, the path of lead-in wire 50b ' produces the change of approximate right angle according to guiding groove 276.But the present invention is not limited thereto, be connected to external connection terminals 236 as long as firmly fix when lead-in wire lead-in wire 50b ' interferences of 50b ' not with other coils, next door 237 can be formed as various angle to set the path of lead-in wire 50b '.

And the next door 237 that the present embodiment provides is formed as its sidewall opposing bottom surface (that is, the lower flange portion of outside roll) contacted with lead-in wire 50b ' and roughly forms right angle.This structure departs from from guiding groove 276 for preventing the lead-in wire 50b ' supported by next door 237.

Thus, next door 237 according to the present invention is not limited thereto, as long as the lead-in wire 50b ' being configured to prevent from being supported by next door 237 departs from from guiding groove 276, then can be formed as various shape.Such as, can make to form acute angle between the sidewall (or chamfered section) in the next door 237 contacted with the 50b ' that goes between and described bottom surface.And, can have and form the multiple application mode such as ladder or groove in chamfered section 237 '.

The coil transfer portion 270 that the present embodiment described above provides is to make secondary coil 50b automatically and the easily structure that derives in outside roll 230 of spiral.

Namely, according to the formation of the coil transfer portion 270 that the present embodiment provides, outside roll 230 spiral secondary coil 50b process and by transfer groove 272 the lead-in wire 50b ' of secondary coil 50b is transferred to outside roll 230 bottom surfaces and be arranged in across path 274 process and changed the path of lead-in wire 50b ' by guiding groove 276, after lead-in wire 50b ' is led to the direction being formed with external connection terminals 236, the process that lead-in wire 50b ' is connected to external connection terminals 236 is automatically performed by special automatic winding equipment (not shown).

The transformer 100 that the present embodiment provides provides coil transfer portion 270, and the lead-in wire 50b ' that this coil transfer portion 270 is used as secondary coil 50b is from path across outside roll 230 of the bottom surfaces of outside roll 230.

Thus, each lead-in wire 50b ' of secondary coil 50b is for preventing mutual intersection, dispersed placement to lower flange portion 233b one side (namely, the lead-out groove of terminal connection part) and another side is (namely, coil transfer portion) and be connected to external connection terminals 236, therefore relative to existing transformer, each lead-in wire 50b ' of coil 50b by multiple Path Connection in external connection terminals 236.

In the past, when the multiple coil of spiral on roll, the lead-in wire leading to the coil of external connection terminals was arranged mutually across, and each lead-in wire contacts with each other thus, causes being short-circuited between each coil.

But the transformer 100 that the present embodiment provides is described above, provides new path by coil transfer portion 270, the 50b ' that therefore respectively goes between by multiple Path Connection to external connection terminals 236.Thus, can prevent each lead-in wire 50b ' from mutually intersecting or contact.

And the outside roll 230 that the present embodiment provides possesses the support portion 239 covering a part of through hole 231 in the upper end of main part 232 towards the inside of through hole 231.Thus, for the through hole 231 of outside roll 230, the sectional area of the bottom surfaces of outside roll 230 is different from the sectional area of the upper side of outside roll 230.

Particularly, the sectional area of the through hole 231 of the bottom surfaces of outside roll 230 has with flange part 223 periphery of inner side roll 220 along the similar size of the whole area formed.And the sectional area of the through hole 231 of outside roll 230 upper side has the area of the sectional area being less than above-mentioned bottom surfaces because of support portion 239.

So, because outside roll 230 possesses support portion 239, therefore inner side roll 220 is inserted into outside roll 230 through hole 231 in time, inner side roll 220 can only be inserted by the bottom surfaces of outside roll 230.

And be inserted into the inner side roll 220 in the through hole 231 of outside roll 230, its upper flange portion 223a contacts with the bottom surfaces forming surface of the support portion 239 of outside roll 230.That is, its one end of inner side roll 220 is supported in support portion 239 and is combined with outside roll 230, can not be projected into the top of outside roll 230 thus or be separated from outside roll 230.

As previously mentioned, the support portion 239 of this outside roll 230 possesses at least one patchhole 238.

Aforesaid insertion protruding 228 is inserted with in patchhole 238.Thus, insert protruding 228 be formed at can with the support portion 239 contacted above of the upper flange portion 223a of inner side roll 220, particularly, be formed at when inner side roll 220 is incorporated into outside roll 230, the position that the insertion protruding 228 of inner side roll 220 is inserted can be made.

Patchhole 238 and insertion protruding 228 can be configured to interference fit, to guarantee the adhesion of inner side roll 220 and outside roll 230.Now, the cross section of inserting the bottom of protruding 228 can be greater than the size of patchhole 238.

Specifically, insert protruding 228 and can be formed as the shape that its cross section is less the closer to upper end.And the cross section of inserting the upper end of protruding 228 is formed as the size being less than patchhole 238, the cross section of inserting the bottom of protruding 228 can be formed as the size being greater than patchhole 238.

Thus, the upper end of inserting protruding 228 can be easily inserted into patchhole 238, and be inserted into patchhole 238 completely along with inserting protruding 228, insert protruding 228 and form interference fit with patchhole 238, therefore, roll 220 and outside roll 230 can firmly fix combination.

But the present invention is not limited thereto, variform can be adopted to make insertion projection 228 be inserted into patchhole 238 and fix.

In addition, the roll portion 210 that the present embodiment provides can be configured to make the inner side inside face of flange part 223 of roll 220 and the inside face of the flange part 233 of outside roll 230 be arranged in identical plane.Particularly, the bottom surfaces of the upper flange portion 223a bottom surfaces of inner side roll 220 and the upper flange portion 233a of outside roll 230 is arranged in identical plane.

For this reason, the upper flange portion 233a of outside roll 230 that the present embodiment provides can make the thickness of local be greater than the upper flange portion 223a of inner side roll 220.

Particularly, as shown in Figure 3, the thickness being exposed to the upper flange portion 233a of the outside roll 230 of 40 outsides unshakable in one's determination is formed as the thickness of the integral thickness after corresponding to the support portion 239 of outside roll 230 and the upper flange portion 223a combination of inner side roll 220.

Thus, the upper flange portion 233a of inner side roll 220 and the integral thickness of insertion protruding 228 can be configured to the thickness of the upper flange portion 233a being equal to or less than described outside roll 230.But, be not limited thereto.

According to this structure, when outside roll 230 and inner side roll 220 in conjunction with time, the inside face of the upper flange portion 223a of inner side roll 220 and the upper flange portion 233a inside face of outside roll 230 are arranged in identical plane.And in the same manner, the inside face of the inside face of the lower flange portion 223b of inner side roll 220 and the lower flange portion 233b of outside roll 230 also can be arranged in identical plane.

The feature in the roll portion 210 that the embodiment of the present invention as constructed as above provides is, makes the external connection terminals 226 being arranged at inner side roll 220 farthest mutually isolated with the external connection terminals 236 being arranged at outside roll 230.Thus, inner side roll 220 and outside roll 230 in conjunction with time, inner side roll 220 make the part of formation terminal connection part 224 be positioned at outside roll 230 do not formed the part of terminal connection part 234, the direction contrary with terminal connection part 234 and roll 230 outside being incorporated into.

Thus, the external connection terminals 236 of outside roll 230 and the external connection terminals 226 of inner side roll 220 are given prominence to along contrary direction and arrange.Therefore, due in the transformer 100 that the present embodiment provides, isolate fully between the external connection terminals 226,236 of primary winding 50a and secondary coil 50b, thus easily can guarantee the insulation distance between primary side and secondary side.

And, the roll portion 210 that the present embodiment provides, inner side roll 220 and outside roll 230 in conjunction with time, guarantee that spiral is in the coil 50a of inner side roll 220 and the insulating properties of spiral between the coil 50b of outside roll 230 by outside roll 230.Thus, compared to using the situation in the past of insulating tape to have very high insulating properties, therefore spiral can farthest near arranging in the coil 50b of outside roll 230 in the coil 50a of inner side roll 220 and spiral.

But, for guaranteeing output characteristic or the creepage distance of transformer 100, can also be configured to make the distance between through hole 231 inner peripheral surface of the exterior face of primary winding 50a and outside roll 230 to be separated by certain interval.This mode is easily applied in the number of turn of the primary winding 50a of inner side roll by the width of flange part 223 of adjustment inner side roll 220 or spiral.

Meanwhile, in the present embodiment, be configured to example with roll portion 210 by outside roll 230 and an inner side roll 220 and be illustrated, but the present invention is not limited thereto.That is, can be configured to insert multiple roll in an outside roll 230.Such as, roll portion 210 is configured to, the other roll inserting the shape being formed as similar with outside roll 230 in the through hole 231 of outside roll 230 is (following, be called middle roll), and in the through hole of middle roll, insert inner side roll 220, and insert unshakable in one's determination 40 in the through hole 221 of inner side roll 220.

Now, in primary winding or secondary coil one of them optionally spiral on maximum two indivedual rolls.

The roll portion 210 that the present embodiment as constructed as above provides easily creates by the mode of injection mo(u)lding, but is not limited thereto, and can also manufacture with various ways such as punch process.And indivedual rolls 220,230 in the roll portion 210 that the present embodiment provides preferably adopt the resin material of insulating properties to be formed, and preferably adopt the material with high-fire resistance and high withstand voltage to be formed.The material forming each roll 220,230 can use polyphenylene sulfide (PPS), polymeric liquid crystal copolymer (LCP), polybutylene terephthalate (PBT) (PBT), PETG (PET) and phenolic resin etc.

Coil 50 comprises primary winding 50a and secondary coil 50b.

Primary winding 50a spiral is in inner side roll 220.

And primary winding 50a provided by the invention can be formed by multiple coil spiral of mutual electric insulation in an inner side roll 220.That is, the transformer 100 that the present embodiment provides forms primary winding 50a by multiple coil, and optionally voltage is put on each coil, corresponding to this, exports multiple voltage by secondary coil 50b.

Now, the quantity being arranged at the external connection terminals 226 of inner side roll 220 also can expand to more than 2.

The multiple coils forming primary winding 50a optionally can use the mutually different coil of diameter, and the number of turn also can be configured to different.And primary winding 50a can use single line, the twisted wire that braiding many single lines are formed also can be used.

The lead-in wire of this primary winding 50a is connected to the external connection terminals 226 that inner side roll 220 possesses.

Secondary coil 50b spiral is in outside roll 230.

Secondary coil 50b also can be the same with aforementioned primary winding 50a, formed by multiple coil spiral of mutual electric insulation.And the lead-in wire 50b ' of secondary coil 50b is connected on external connection terminals 236 that outside roll 230 possesses.

In addition, in the present embodiment, as previously mentioned, schematically illustrate primary winding 50a spiral in inner side roll 220, secondary coil 50b spiral is in the situation of outside roll 230.But the present invention is not limited thereto, can on outside roll 230 spiral primary winding 50a, spiral secondary coil 50b on inner side roll 220, as long as can export the voltage needed for user, then any application can.

In the through hole 221 that unshakable in one's determination 40 inside being inserted in inner side roll 220 are formed.Iron core 40 in the present embodiment is set to a pair, and inserts respectively by the through hole 221 of inner side roll 220, towards mutually connecting in the face of connecting.This unshakable in one's determination 40 can utilize ' EE ' iron core 40, ' EI ' 40 etc.

Along with unshakable in one's determination 40 are combined with roll portion 210, the bottom surfaces of 40 support inner side rolls 220 unshakable in one's determination and outside roll 230.Thus, inner side roll 220 can not be separated according to unshakable in one's determination 40 with outside roll 230.

This unshakable in one's determination 40 can by compare other materials have high magnetic susceptibility, low-loss, high saturation magnetic flux density, stability and low production cost Mn-Zn based ferrite (ferrite) form.But, embodiments of the invention not to unshakable in one's determination 40 form or material limit.

In addition, although do not illustrate in figure, between the roll portion 210 that the present embodiment provides and unshakable in one's determination 40, insulating tape can be got involved.Insulating tape can be used for guaranteeing the insulation of spiral between the coil 50 in roll portion 210 and unshakable in one's determination 40.

This insulating tape may correspond in unshakable in one's determination 40 with all inner peripheral surfaces in roll portion 210 aspectant unshakable in one's determination 40 and getting involved, also can only get involved partly coil 50 and 40 aspectant parts unshakable in one's determination.

And, insulating tape etc. can also be pasted at the outer peripheral face of unshakable in one's determination 40 and there is multiple application as required.

The transformer 100 that this present embodiment provides can be placed in substrate 6 (such as, tellite), and its external connection terminals 226,236 is inserted in the connecting hole 6a that substrate 6 is formed.

Thus, the shape that the substrate 6 that the present embodiment provides may correspond in transformer 100 possesses through poroid resettlement section 6b.As shown in Figure 2, when substrate 6 is formed resettlement section 6b, transformer 100 is installed on substrate 6 with the state being contained in 6b inside, resettlement section.

Now, because transformer 100 is accommodated in substrate 6 inside, therefore, it is possible to make the maximum installation height of the electronic unit be installed on substrate 6 minimize.

As mentioned above, in the transformer 100 that the present embodiment provides, inner side roll 220 and outside roll 230 in conjunction with time, supported by the support portion 239 of outside roll 230 and combine.

And, in conjunction with outside roll 230 and the combined outside of inner side roll 220 have unshakable in one's determination 40, according to this unshakable in one's determination 40, the bottom surfaces of inner side roll 220 and outside roll 230 is supported simultaneously.

Meanwhile, the insertion protruding 228 of the inner side roll 220 that the present embodiment provides forms interference fit with the patchhole 238 of outside roll 230, and inner side roll 220 secure bond is in outside roll 230 thus.

Thus, the inner side roll 220 of the transformer 100 that the present embodiment provides and the assembling of outside roll 230 and combining is very easy to, and after combining, inner side roll 220 can not be separated from outside roll 230 easily or give prominence at outside roll 230.

In addition, in the present embodiment, schematically illustrate on the roll of inner side and be formed with insertion projection, outside roll is formed with the situation of patchhole, but the present invention is not limited thereto.That is, can be configured to form patchhole on the roll of inner side, and on the roll of outside, arrange insertion protruding, and can be configured to inner side roll and outside roll all possess respectively insert protruding and patchhole.

And, for improving the adhesion of inner side roll and outside roll, insertion can be convexed to form as hook-type.Now, the upper side making to be mounted on the support portion of outside roll at the protruding hook portion expanded to the outer direction of insertion can be configured to.

Fig. 6 is the stereogram of the transformer that another embodiment of the present invention is roughly shown.The transformer 200 that the present embodiment provides has the structure similar with aforesaid transformer (100 of Fig. 1), and difference is only in the structure of the terminal connection part 234 of outside roll 230.Therefore, the inscape identical with aforesaid embodiment is omitted the description, in the structure focusing on the terminal connection part 234 of outside roll 230 of explanation.

Known with reference to Fig. 6, the terminal connection part 234 of the outside roll 230 that the present embodiment provides, the face that it extends from the inside face of lower flange portion 233b to terminal connection part 234 forms the inclined plane S of the form implementing chamfer machining.And each lead-out groove 235 be arranged between external connection terminals 236 is formed as the form at the through terminal connection part 234 of above-below direction, and be formed as having the larger width of the lead-out groove (235 of Fig. 2) of comparing previous embodiment.

Because terminal connection part 234 has this structure, therefore spiral can easily be connected to external connection terminals 236 along the inclined plane S of terminal connection part 234 in the coil 50b of outside roll 230.And the guiding groove 235 that the 50b ' that respectively goes between is arranged to via being formed with larger width is connected with external connection terminals 236.

According to this structure, in the transformer 200 that the present embodiment provides, lead-in wire 50b ', when the places such as the turning of terminal connection part 234 or lead-out groove 235 bend, can be minimized in the physics that sweep produces tired.

Fig. 7 A is for roughly illustrating the exploded perspective view of the flat display devices that the embodiment of the present invention provides, and Fig. 7 B is the partial sectional view of the E-E ' line of Fig. 7 A.

First, known with reference to Fig. 7 A, the flat display devices 1 that the embodiment of the present invention provides comprises: display pannel 4; Power suppling part 5 and the lid 2,8 of transformer 100 are installed.

Lid 2,8 comprises protecgulum (front cover) 2 and bonnet (back cover) 8, and protecgulum 2 and bonnet 8 cooperatively interact and in formation space, inside thus.

Display pannel 4 is arranged within the inner space that formed by lid 2,8, and can use the multiple flat-panel display panels such as liquid crystal display (LCD), plasma display device (PDP), Organic Light Emitting Diode (OLED).

Power suppling part 5 provides power supply to display pannel 4.Power suppling part 5 by installing multiple electronic unit and formed on tellite 6, particularly can install the transformer 100,200 that at least one previous embodiment provides.In the present embodiment, for the situation during transformer 100 of installation diagram 1.

Power suppling part 5 can be fixed on framework 7, and can be arranged in the inner space that formed by lid 2,8 and be fixed together with display pannel 4.

Now, as shown in Figure 7 B, be installed on the transformer 100 of power suppling part 5, its coil 50 is with the direction spiral parallel with tellite 6.Further, from (Z-direction) during the plan view of tellite 6, coil 50 is with clockwise or counterclockwise spiral.Further, part 40 (and upper side) unshakable in one's determination are parallel with bonnet 8, and form magnetic circuit with this.

Therefore, according to the transformer 100 of the present embodiment as shown in Figure 7 B, for the magnetic flux be formed in the magnetic field produced by coil 50 between bonnet 8 and transformer 100, major part forms magnetic circuit in coil 40, therefore can minimize the leak flux φ l formed between bonnet and transformer 100.

Namely, coil 50 is configured to form parallel direction spiral with printed circuit board (PCB) 6 according to the transformer 100 of the present embodiment, therefore from the past different, the magnetic circuit of leak flux φ l can not be contained whole space and is formed in the space between transformer 100 and bonnet 8, but is less formed in local.

Thus, according to the transformer 100 of the present embodiment, even if do not adopt other screening arrangement (such as radome etc.) can minimize the interference produced between the bonnet 8 of leak flux φ l and metal material in its outside yet.

Therefore, even if be provided with transformer 100 in the slim electronic equipment of such as flat display devices 1 and gap-forming between bonnet 8 and transformer 100 obtains very narrow, also can prevent from producing noise because of the vibrations of bonnet 8.

The feature of transformer disclosed in the present embodiment described above is the manufacture method being configured to be suitable for automation.

That is, the transformer that the present embodiment provides is manufactured in the following manner.That is, inner side roll and outside roll individually reel coil, when winding completes, in conjunction with inner side roll and outside roll, afterwards in conjunction with iron core.

So, transformer according to the present invention is in order to automatically and easily reel primary winding and secondary coil, and reel under being configured to the state that can be separated with outside roll at inner side roll coil respectively.Now, the winding of coil is undertaken by other automatic winding equipment.

And the inner side roll after completing spiral and outside roll are supported in support portion, and inner side roll can easily be combined with outside roll.And insert protruding Intercalation in the patchhole of outside roll because inner side roll utilizes, the inner side roll therefore completing combination maybe can not can not protrude from outside roll from outside roll delamination.Therefore, in the transformer that the present embodiment provides, the cohesive process of inner side roll and outside roll also automatically can be carried out by Special Equipment.

So, transformer provided by the invention can make most of manufacture process automation, therefore has required expense and the advantage of time when significantly can reduce manufacture.

Further, transformer provided by the invention possesses coil transfer portion, and this coil transfer portion is the path of the lead-in wire of the coil bottom surfaces in roll portion across roll portion.That is, in transformer provided by the invention, coil not by means of only lead-out groove, but also is connected to external connection terminals by coil transfer portion.

Therefore, multiple lead-in wires of coil are connected to external connection terminals by more various path, thus contact between can preventing because of lead-in wire and the problem that is short-circuited.

Further, transformer according to the present invention is formed as very thin slim.Therefore, can easily be applied in slim display equipment.

In addition, transformer provided by the invention discussed above and the flat display devices possessing this transformer are not limited to previous embodiment, can have various application.Such as, a wherein place in the upper flange portion of inner side roll and the support portion of outside roll is outstanding forms at least one insertion projection, and correspond to the forming position inserting projection, formed at another place and be used for and insert the protruding patchhole etc. combined, as long as the adhesion of inner side roll and outside roll can be guaranteed, then various structures can be applied.

Further, the situation that each independent roll is formed to be roughly rectangular shape is schematically illustrated in the aforementioned embodiment.But the present invention is not limited thereto, the various shapes such as cylindrical shape can be formed as, as long as desired voltage can be exported.

And, schematically illustrate the transformer adopted in display equipment in the present embodiment, but be not limited thereto, as long as possess the slim electronic equipment of transformer, just can be suitable for wide model.

Claims (8)

1. a transformer, is characterized in that, comprising:

Roll portion, comprises inner side roll and outside roll, and inner side roll and outside roll possess the inner main part forming the tubulose of through hole and the flange part externally given prominence at the two ends of described main part;

Coil, coiling is in described inner side roll and described outside roll respectively; And

Iron core, forms the magnetic circuit be combined with described coil electromagnetism,

Wherein, described inner side roll is inserted into the through hole of described outside roll and is combined with outside roll,

Described inner side roll and described outside roll possess external connection terminals respectively, and this external connection terminals is connected to the one end of the described flange part formed on the lower end of described main part,

The external connection terminals of described inner side roll, its upper side contacts with the lower flange portion bottom surfaces of described outside roll and supports described outside roll.

2. transformer according to claim 1, is characterized in that, the through hole of described outside roll is formed as upper end sectional area according to described support portion is different from the sectional area of lower end.

3. transformer according to claim 1, is characterized in that, described inner side roll possesses at least one and inserts protruding, the outstanding upper side being formed at the flange part formed in the main part upper end of described inner side roll of this insertion projection.

4. transformer according to claim 3, it is characterized in that, described outside roll forms at least one patchhole on described support portion, and the described insertion projection of described inner side roll is inserted in described patchhole and described inner side roll is combined with outside roll.

5. transformer according to claim 4, is characterized in that, insert interference fit that is protruding and described patchhole according to described, described inner side roll is fixedly installed in described outside roll.

6. transformer according to claim 1, is characterized in that, the described flange part inside face of described inner side roll is arranged in identical plane with the described flange part inside face of described outside roll.

7. transformer according to claim 1, it is characterized in that, a wherein place in the described flange part upper side of described inner side roll and the described support portion bottom surfaces of described outside roll is outstanding to be formed with at least one and to insert projection, corresponding to being formed with described position of inserting projection, another place is formed and is used for inserting protruding patchhole described in Intercalation.

8. transformer according to claim 1, it is characterized in that, described outside roll possesses coil transfer portion, be used as by spiral in the described coil of described main part lead-in wire by the periphery of described flange part along be transferred to described flange part bottom surfaces and with the path of described external connection terminal sub-connection.