CN207149361U

CN207149361U - A kind of network transformer

Info

Publication number: CN207149361U
Application number: CN201721113470.4U
Authority: CN
Inventors: 邹朝勃; 姚柏成
Original assignee: Guangdong Polytron Technologies Inc
Current assignee: Guangdong Polytron Technologies Inc
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2018-03-27
Anticipated expiration: 2027-08-31

Abstract

The utility model discloses a kind of network transformer, including base, lid, some coil groups being arranged at intervals at along the length direction of base on base and the terminal being connected with the wire of coil group, terminal is fixed on base, the base includes bottom plate and first side plate at the both ends positioned at the bottom plate along its length, the first neck is offered on first side plate, the bottom land of first neck offers the second neck, accordingly, the lid includes lid body, the first convex portion with the first neck clamping is provided with the lid body, the second convex portion with the second neck clamping is provided with the inside of first convex portion, when the base connects and fixes with the lid, first neck has towards the opening portion of lid, when first convex portion is inserted into the first neck by opening portion, second convex portion is located in the second neck.In the utility model, base uses detachable connection with lid, it is possible to reduce product processing procedure scrappage, improves yields.

Description

A kind of network transformer

Technical field

It the utility model is related to electrical equipment technical field, and in particular to a kind of network transformer.

Background technology

In the prior art, network transformer is made using traditional manufacture craft, because pin pin are more, during coiling Wrong line is easily drawn, and short circuit and broken string are easily caused during wicking, the quality with a batch of product is in the presence of very big Otherness, and the yields for the product produced is low, causes the production cost of product high, reduces its market competitiveness.

Utility model content

The purpose of this utility model is to provide a kind of network transformer, and its base uses detachable connection with lid, Product processing procedure scrappage can be reduced, improves yields.

To use following technical scheme up to this purpose, the utility model：

A kind of network transformer is provided, including base, lid, along the length direction of the base is arranged at intervals at the bottom Some coil groups on seat and the terminal being connected with the wire of the coil group, the terminal are fixed on the base, institute Stating base includes bottom plate and first side plate at the both ends positioned at the bottom plate along its length, is offered on first side plate First neck, the bottom land of first neck offer the second neck, and accordingly, the lid includes lid body, and the lid is originally The first convex portion with the first neck clamping is provided with body, is provided with the inside of first convex portion and second neck Second convex portion of clamping, when the base connects and fixes with the lid, first neck has opening towards the lid Oral area, when first convex portion is inserted into first neck by the opening portion, second convex portion is located at described second In neck.

As a kind of preferable technical scheme of network transformer, first neck bottom land and be adjacent to described open The side of oral area has the first inclined plane；

The direction of first neck is inserted along first convex portion, the front end of second convex portion has second to tilt Face, second inclined plane can be slipped into second neck along first inclined plane.

As a kind of preferable technical scheme of network transformer, the base is plastic cement material, and it is noted with the terminal Modeling connection, the base also include being located at second side plate of the bottom plate along its width one end, the bottom plate, the first side plate And second form the mounting groove for installing the coil group between side plate, the coil group includes first coil and positioned at described The second coil above first coil, the terminal include the first terminal and Second terminal, and one end of the first terminal is along institute The thickness direction for stating bottom plate is extended to outside it through the bottom plate, and the other end extends to the first coil away from described second The side of side plate, the thickness direction of one end of the Second terminal along the bottom plate are extended to outside it through the bottom plate, separately One end extends to the top of second coil.

As a kind of preferable technical scheme of network transformer, length side of some the first terminals along the bottom plate Arranged to order, length direction order of some Second terminals along the bottom plate is arranged, and coil group described in each group is corresponding The first terminal and the Second terminal it is arranged in arrays.

As a kind of preferable technical scheme of network transformer, the base also includes positioned at the bottom plate away from described 3rd side plate of one end of the second side plate, the height of the 3rd side plate are less than the height of second side plate；

The first terminal includes the first extension and the second extension, and one end of first extension is along the described 3rd The inwall of side plate is extended to outside it through the bottom plate, and inwall of the other end along the 3rd side plate extends to the 3rd side The upper surface of plate is connected with second extension, and the one end of second extension away from first extension is directed away from The direction extension of second side plate；

The Second terminal includes the 3rd extension and the 4th extension, and one end of the 3rd extension is along described second The inwall of side plate is extended to outside it through the bottom plate, and inwall of the other end along second side plate extends to second line The top of circle is connected with the 4th extension.

As a kind of preferable technical scheme of network transformer, the height of the 3rd side plate is more than the thickness of the bottom plate Degree, second side plate and the 3rd side plate are located at the homonymy of the bottom plate, and the length of second extension is less than institute The thickness of the 3rd side plate is stated, the described one end of 4th extension away from the 3rd extension is directed away from the 3rd side plate Direction extends, and the first wire casing for accommodating the first terminal is provided with the 3rd side plate, is set on second side plate The second wire casing for accommodating the Second terminal is equipped with, the wire of the first coil extends to the upper end of the 3rd side plate Welded in first wire casing in face with second extension, the wire of second coil extends to second side plate Welded in second wire casing of upper surface with the 4th extension.

As a kind of preferable technical scheme of network transformer, the base also includes remote positioned at second side plate The top plate of one end of the bottom plate, the bottom plate and the top plate are located at the homonymy of second side plate, the 3rd side plate Highly be less than the bottom plate thickness, and the length of second extension be less than the 3rd side plate thickness, the described 3rd The first wire casing for accommodating the first terminal is provided with side plate, inwall of the 4th extension along the top plate is roundabout The upper end of the top plate is extended to, is respectively arranged with second side plate and the top plate and accommodates the second of the Second terminal Wire casing, the wire of the first coil is extended in first wire casing of the upper surface of the 3rd side plate to be prolonged with described second Extending portion is welded, and the wire of second coil is extended in second wire casing of the top plate upper surface to be extended with the described 4th Weld in portion.

As a kind of preferable technical scheme of network transformer, the base also includes remote positioned at second side plate The top plate of one end of the bottom plate, the bottom plate and the top plate are located at the homonymy of second side plate, the 3rd side plate Highly it is less than the thickness of the bottom plate, the 3rd side plate is stepped ramp type, and it has the First terrace and second to sink successively Step surface, the one end of second extension away from first extension, which extends to, is suspended on the upper of the second step face End, inwall of the described one end of 4th extension away from the 3rd extension along the top plate are directed away from second side plate Direction extend to vacantly, the wire of the first coil extends to be welded with the free end of second extension, described the The wire of two coil extends to be welded with the free end of the 4th extension.

As a kind of preferable technical scheme of network transformer, the wire of the first coil is with second extension Free end be wrapped on the free end of second extension for axle, and connect with the free end soldering of second extension Connect；The wire of second coil is wrapped in the free end of the 4th extension using the free end of the 4th extension as axle On, and be connected with the free end soldering of the 4th extension.

As a kind of preferable technical scheme of network transformer, coil group described in two adjacent groups and its corresponding end Spacing identification is respectively arranged between son.

The beneficial effects of the utility model：In the utility model, base uses semi open model structure, can increase coil Installing space, product processing procedure scrappage is reduced, improve yields.Coordinated by the grafting of the first neck and the first convex portion and the Two draw-in groove and the clamping engagement of the second convex portion, the detachable connection of lid and base is realized, seal the coil group on base Between base and lid, and dispensing processing is not needed.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of the network transformer of the embodiment of the utility model one.

Fig. 2 is the decomposing schematic representation of the network transformer of the embodiment of the utility model one.

Fig. 3 is the dimensional structure diagram of the network transformer (being free of lid) of the embodiment of the utility model one.

Fig. 4 is Fig. 3 O direction views.

Fig. 5 is Fig. 4 A-A to sectional view.

Fig. 6 is the dimensional structure diagram of the lid of the embodiment of the utility model one.

Fig. 7 is the dimensional structure diagram of the network transformer of another embodiment of the utility model.

Fig. 8 is the decomposing schematic representation of the network transformer of another embodiment of the utility model.

Fig. 9 is the dimensional structure diagram of the base of another embodiment of the utility model.

Figure 10 is Fig. 9 P direction views.

Figure 11 is Figure 10 B-B direction sectional view.

Figure 12 is the dimensional structure diagram of the network transformer (being free of lid) of another embodiment of the utility model.

Figure 13 is Figure 12 Q direction views.

Figure 14 is Figure 13 C-C to sectional view.

Figure 15 is the dimensional structure diagram of the lid of another embodiment of the utility model.

Figure 16 is the dimensional structure diagram of the network transformer of the utility model another embodiment.

Figure 17 is the decomposing schematic representation of the network transformer of the utility model another embodiment.

Figure 18 is the dimensional structure diagram of the base of the utility model another embodiment.

Figure 19 is Figure 18 R direction views.

Figure 20 is Figure 19 D-D to sectional view.

Figure 21 is the dimensional structure diagram of the network transformer (being free of lid) of the utility model another embodiment.

Figure 22 is Figure 21 S direction views.

Figure 23 is Figure 22 E-E to sectional view.

Figure 24 is the dimensional structure diagram of the lid of the utility model another embodiment.

In Fig. 1 to 24：

1st, base；11st, bottom plate；12nd, the first side plate；121st, the first neck；122nd, the second neck；13rd, the second side plate；14、 3rd side plate；15th, top plate；

2nd, lid；21st, lid body；22nd, the first convex portion；23rd, the second convex portion；

3rd, coil group；31st, first coil；32nd, the second coil；

4th, terminal；41st, the first terminal；411st, the first extension；412nd, the second extension；42nd, Second terminal；421st, the 3rd Extension；422nd, the 4th extension.

Embodiment

Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.

In description of the present utility model, it is to be understood that the orientation or position relationship of the instruction such as term " interior ", " outer " Based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying description, without referring to Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage Solve as to limitation of the present utility model.

In addition, term " first ", " second ", " the 3rd ", " the 4th " are only used for describing purpose, and it is not intended that instruction or Imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second ", " are defined Three ", one or more this feature can be expressed or be implicitly included to the feature of " the 4th ".

In description of the present utility model, unless otherwise clearly defined and limited, term " fixation " should be interpreted broadly, For example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect or be electrically connected Connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two components interiors connection or two portions The interaction relationship of part.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in this reality With the concrete meaning in new.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features The other characterisation contact crossed between them.Moreover, fisrt feature second feature it " on " to include fisrt feature special second Directly over sign and oblique upper, or be merely representative of fisrt feature level height and be higher than second feature.Fisrt feature second feature it " under " include fisrt feature immediately below second feature and obliquely downward, or to be merely representative of fisrt feature level height special less than second Sign.

As shown in Fig. 1 to 24, the network transformer of the present embodiment, including base 1, lid 2, the length direction along base 1 Some coil groups 3 being arranged at intervals on base 1 and the terminal 4 being connected with the wire of coil group 3, terminal 4 are fixed on base 1 On, base 1 includes bottom plate 11 and first side plate 12 at the both ends positioned at bottom plate 11 along its length, is opened up on the first side plate 12 There is the first neck 121, the bottom land of the first neck 121 offers the second neck 122, and accordingly, lid 2 includes lid body 21, lid The first convex portion 22 with the clamping of the first neck 121 is provided with body 21, the inner side of the first convex portion 22 is provided with and the second neck Second convex portion 23 of 122 clampings, when base 1 connects and fixes with lid 2, the first neck 121 has towards the opening portion of lid 2, When first convex portion 22 is inserted into the first neck 121 by opening portion, the second convex portion 23 is located in the second neck 122.Wherein, second Neck 122 can also be through-hole structure.In the present embodiment, base 1 uses semi open model structure, and the installation that can increase coil is empty Between, reduce processing procedure scrappage.Pass through the grafting cooperation of the first neck 121 and the first convex portion 22 and the second neck 122 and second The clamping engagement of convex portion 23, the detachable connection of lid 2 and base 1 is realized, the coil group 3 on base 1 is sealed in base 1 Between lid 2, and dispensing processing is not needed.

There is the first inclined plane in the bottom land of the first neck 121 and the side that is adjacent to opening portion；Inserted along the first convex portion 22 Enter the direction of the first neck 121, the front end of the second convex portion 23 has the second inclined plane, and the second inclined plane can be slided along the first inclined plane Enter into the second neck 122.First inclined plane and the second inclined plane are engaged, and can make clamping between lid 2 and base 1 more To be smooth.

Base 1 is plastic cement material, and it is molded with terminal 4 and connected, and base 4 also includes being located at bottom plate 11 along its width one Second side plate 13 at end, the mounting groove for installing coil group 3 is formed between bottom plate 11, the first side plate 12 and the second side plate 13, Coil group 3 includes first coil 31 and the second coil 32 above first coil 31, and terminal 4 includes the first terminal 41 and the Two-terminal 42, the thickness direction of one end of the first terminal 41 along bottom plate 11 are extended to outside it through bottom plate 11, other end extension To side of the first coil 31 away from the second side plate 13, the thickness direction of one end of Second terminal 42 along bottom plate 11 passes through bottom plate 11 Extend to outside it, the other end extends to the top of the second coil 32.Specifically, each coil group 3 includes the length along base 1 The spaced two coils packet in direction, each coil packet includes a first coil 31 and one is located at first coil 31 Second coil 32 of top, three conductor wire ends of each first coil 31 are connected with a first terminal 41 respectively, and every one second Three conductor wire ends of coil 32 are connected with a Second terminal 42 respectively, the corresponding Wiring port of each coil group 3.This implementation Network transformer in example can be Liang Kou, three mouthfuls, four mouthfuls, the multi-port network transformers such as five mouthfuls.

Length direction order of some the first terminals 41 along bottom plate 11 is arranged, length side of some Second terminals along bottom plate 11 Arranged to order, the first terminal 41 and Second terminal 42 are arranged in arrays corresponding to each group of coil group 3.

Base 1 also includes the 3rd side plate 14 positioned at the one end of bottom plate 11 away from the second side plate 13, the height of the 3rd side plate 14 Height of the degree less than the second side plate 13；The first terminal 41 includes the first extension 411 and the second extension 412, the first extension Inwall of 411 one end along the 3rd side plate 14 is extended to outside it through bottom plate 11, and inwall of the other end along the 3rd side plate 14 prolongs The upper surface for extending the 3rd side plate 14 is connected with the second extension 412, the second extension 412 away from the first extension 411 one End is directed away from the direction extension of the second side plate 13；Second terminal 42 includes the 3rd extension 421 and the 4th extension 422, the Inwall of the one end of three extensions 421 along the second side plate 13 is extended to outside it through bottom plate 11, and the other end is along the second side plate 13 Inwall extend to the top of the second coil 32 and be connected with the 4th extension 422.

In one of embodiment of the present utility model, as shown in Figures 1 to 6, the height of the 3rd side plate 14 is more than bottom plate 11 thickness, the second side plate 13 and the 3rd side plate 14 are located at the homonymy of bottom plate 11, and the length of the second extension 412 is less than the 3rd The thickness of side plate 14, the direction that the 4th one end of extension 422 away from the 3rd extension 421 is directed away from the 3rd side plate 14 are prolonged Stretch, the first wire casing for accommodating the first terminal 41 is provided with the 3rd side plate 14, be provided with the second side plate 13 for accommodating Second wire casing of Second terminal 42, the wire of first coil 31 are extended in the first wire casing of the upper surface of the 3rd side plate 14 with the Two extensions 412 are welded, and the wire of the second coil 32 is extended in the second wire casing of the upper surface of the second side plate 13 to be prolonged with the 4th Extending portion 422 is welded.In the present embodiment, the first terminal 41 and Second terminal 42 facilitate laser equivalent to being partly embedded in plastic base 1 Spot welding or thermal compression welding.With base 1 accordingly, the lid body 21 of lid 2 includes upper lid and side cover, and the first convex portion is arranged on Cover, the first neck 22 on the first side plate 12 is used for the opening portion of the first convex portion grafting towards bottom plate 11.

In another embodiment of the present utility model, as shown in Fig. 7 to 15, base 1 also includes being located at the second side plate 13 The top plate 15 of one end away from bottom plate 11, bottom plate 11 and top plate 15 are located at the homonymy of the second side plate 13, the height of the 3rd side plate 14 Less than the thickness of bottom plate 11, and the length of the second extension 412 is less than the thickness of the 3rd side plate 14, is provided with the 3rd side plate 14 For accommodating the first wire casing of the first terminal 41, inwall of the 4th extension 422 along top plate 15 is roundabout to extend to the upper of top plate 15 Hold, the second wire casing for accommodating Second terminal 42 is respectively arranged with the second side plate 13 and top plate 15, the wire of first coil 31 prolongs Extend and welded in the first wire casing of the upper surface of the 3rd side plate 14 with the second extension 412, the wire of the second coil 32 extends to Welded in second wire casing of the upper surface of top plate 15 with the 4th extension 422.Compared with a upper embodiment, the lid in the present embodiment 2 lid body 21 includes upper lid and side cover, and the first convex portion is arranged on side cover, the first neck 22 on the first side plate 12 be used for Opening portion the 3rd side plate 14 of direction of first convex portion grafting.Second terminal 42 and the connection of plastic base 1 in the present embodiment is steady It is qualitative stronger.

In further embodiment of the present utility model, as shown in Figure 16 to 24, base 1 also includes remote positioned at the second side plate 13 from one end of bottom plate 11 top plate 15, bottom plate 11 and top plate 15 are located at the homonymy of the second side plate 13, the height of the 3rd side plate 14 Less than the thickness of bottom plate 11, the 3rd side plate 14 is stepped ramp type, and it has the First terrace to sink successively and second step face, the The one end of two extensions 412 away from the first extension 411 extends to the upper end for being suspended on second step face, the 4th extension 422 The direction that inwall of the one end away from the 3rd extension 421 along top plate 15 is directed away from the second side plate 13 extends to vacantly, and first The wire of coil 31 extends to be connected with the free end soldering of the second extension 412, and the wire of the second coil 32 extends to and the The free end soldering connection of four extensions 422.In the present embodiment, the lid body 21 of lid 2 includes side cover, and the periphery of side cover is (no Including close to the side of bottom plate) extension extended towards the second side plate 13 is provided with, the length of extension is not less than free end Length, to realize that the one end for connecting terminal 4 and wire is closed in the cavity between base 1 and lid 2.

Wherein, the wire of first coil 31 is wrapped in the second extension 412 by axle of the free end of the second extension 412 On free end, and it is connected with the free end soldering of the second extension 412；The wire of second coil 32 is with the 4th extension 422 Free end is that axle is wrapped on the free end of the 4th extension 422, and is connected with the free end soldering of the 4th extension 422.

Be respectively arranged with spacing identification between two adjacent groups coil group 3 and its corresponding terminal 4, for example, dividing plate, groove or Other labeling of person etc., facilitate the correct assembling of network transformer.

It is to be understood that above-mentioned embodiment is only preferred embodiment of the present utility model and institute's application technology Principle, in technical scope disclosed in the utility model, what any one skilled in the art was readily apparent that Change or replacement, it should all cover in the scope of protection of the utility model.

The utility model is illustrated above by specific embodiment, but the utility model is not limited to these tools The embodiment of body.It will be understood by those skilled in the art that various modifications, equivalent substitution, change can also be made to the utility model Etc.., all should be within the scope of protection of the utility model but these are converted without departing from spirit of the present utility model. In addition, some terms used in present specification and claims are not limitation, it is only for are easy to describe.

Claims

1. a kind of network transformer, it is characterised in that be arranged at intervals at including base, lid, along the length direction of the base Some coil groups on the base and the terminal being connected with the wire of the coil group, the terminal are fixed on the base On, the base includes first side plate at bottom plate and the both ends positioned at the bottom plate along its length, on first side plate The first neck is offered, the bottom land of first neck offers the second neck, and accordingly, the lid includes lid body, institute The first convex portion being provided with lid body with the first neck clamping is stated, is provided with the inside of first convex portion and described Second convex portion of two draw-in groove clamping, when the base connects and fixes with the lid, first neck has towards the lid The opening portion of body, when first convex portion is inserted into first neck by the opening portion, second convex portion is located at institute State in the second neck.

2. network transformer according to claim 1, it is characterised in that first neck bottom land and be adjacent to institute The side for stating opening portion has the first inclined plane；

The direction of first neck is inserted along first convex portion, the front end of second convex portion has the second inclined plane, institute Stating the second inclined plane can be slipped into second neck along first inclined plane.

3. network transformer according to claim 1, it is characterised in that the base is plastic cement material, itself and the end Son injection connection, the base also include being located at second side plate of the bottom plate along its width one end, the bottom plate, first The mounting groove for installing the coil group is formed between side plate and the second side plate, the coil group includes first coil and is located at The second coil above the first coil, the terminal include the first terminal and Second terminal, one end of the first terminal Extended to along the thickness direction of the bottom plate through the bottom plate outside it, the other end extends to the first coil away from described The side of second side plate, the thickness direction of one end of the Second terminal along the bottom plate are extended to outside it through the bottom plate Portion, the other end extend to the top of second coil.

4. network transformer according to claim 3, it is characterised in that length of some the first terminals along the bottom plate Spend direction order to arrange, length direction order of some Second terminals along the bottom plate is arranged, coil group described in each group The corresponding the first terminal and the Second terminal are arranged in arrays.

5. network transformer according to claim 3, it is characterised in that the base also includes remote positioned at the bottom plate 3rd side plate of one end of second side plate, the height of the 3rd side plate are less than the height of second side plate；

The first terminal includes the first extension and the second extension, and one end of first extension is along the 3rd side plate Inwall extended to through the bottom plate outside it, inwall of the other end along the 3rd side plate extends to the 3rd side plate Upper surface is connected with second extension, and the one end of second extension away from first extension is directed away from described The direction extension of second side plate；

The Second terminal includes the 3rd extension and the 4th extension, and one end of the 3rd extension is along second side plate Inwall extended to through the bottom plate outside it, inwall of the other end along second side plate extends to second coil Top is connected with the 4th extension.

6. network transformer according to claim 5, it is characterised in that the height of the 3rd side plate is more than the bottom plate Thickness, second side plate and the 3rd side plate are located at the homonymy of the bottom plate, and the length of second extension is small In the thickness of the 3rd side plate, the described one end of 4th extension away from the 3rd extension is directed away from the 3rd side The direction of plate extends, and the first wire casing for accommodating the first terminal, second side plate are provided with the 3rd side plate On be provided with the second wire casing for accommodating the Second terminal, the wire of the first coil extends to the 3rd side plate Welded in first wire casing of upper surface with second extension, the wire of second coil extends to second side Welded in second wire casing of the upper surface of plate with the 4th extension.

7. network transformer according to claim 5, it is characterised in that the base also includes being located at second side plate The top plate of one end away from the bottom plate, the bottom plate and the top plate are located at the homonymy of second side plate, the 3rd side The height of plate is less than the thickness of the bottom plate, and the length of second extension is less than the thickness of the 3rd side plate, described The first wire casing for accommodating the first terminal, inwall of the 4th extension along the top plate are provided with 3rd side plate The roundabout upper end for extending to the top plate, it is respectively arranged with second side plate and the top plate and accommodates the Second terminal Second wire casing, the wire of the first coil are extended in first wire casing of the upper surface of the 3rd side plate with described the Two extensions are welded, and the wire of second coil is extended in second wire casing of the top plate upper surface with the described 4th Extension welds.

8. network transformer according to claim 5, it is characterised in that the base also includes being located at second side plate The top plate of one end away from the bottom plate, the bottom plate and the top plate are located at the homonymy of second side plate, the 3rd side The height of plate is less than the thickness of the bottom plate, and the 3rd side plate be stepped ramp type, its have the First terrace that sinks successively with Second step face, the one end of second extension away from first extension, which extends to, is suspended on the second step face Upper end, inwall of the described one end of 4th extension away from the 3rd extension along the top plate are directed away from second side The direction of plate is extended to vacantly, and the wire of the first coil extends to be welded with the free end of second extension, described The wire of second coil extends to be welded with the free end of the 4th extension.

9. network transformer according to claim 8, it is characterised in that the wire of the first coil prolongs with described second The free end of extending portion be axle be wrapped on the free end of second extension, and with the free end soldering of second extension Connection；The wire of second coil is wrapped in the hanging of the 4th extension using the free end of the 4th extension as axle On end, and it is connected with the free end soldering of the 4th extension.

10. according to the network transformer described in any one of claim 1 to 9, it is characterised in that coil group described in two adjacent groups and Spacing identification is respectively arranged between the terminal corresponding to it.