CN201717111U

CN201717111U - Transformer structure

Info

Publication number: CN201717111U
Application number: CN2010202384130U
Authority: CN
Inventors: 林长瑞; 林俞佑
Original assignee: HAIYUN ELECTRONIC INDUSTRY Co Ltd
Current assignee: HAIYUN ELECTRONIC INDUSTRY Co Ltd; Sea Sonic Electronics Co Ltd
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2011-01-19
Anticipated expiration: 2020-06-22

Abstract

The utility model relates to a transformer structure comprising a hollow winding tube, at least one separator, an iron core group, and a primary side winding and a secondary side winding that are positioned on the hollow winding tube, wherein the hollow winding tube is provided with at least one insulation clapboard to divide the periphery of the hollow winding tube into a winding section and at least one assembly section; the primary side winding is wound on the winding section; the at least one separator is assembled on the assembly section and provided with a separating wall in the winding section; beside the separator, a plurality of conducting plates are sleeved on the assembly section, are electrically connected with each other to form at least one secondary side winding, and comprise at least two output pins; the iron core group passes through the hollow winding tube to form a magnetic path; the transformer also comprises an insulation sleeve separating the iron core group from the primary side and secondary side windings, and a shell; therefore, the transformer can greatly increase the creepage distance between the windings, and overcome the defect of insufficient known creepage distance.

Description

Transformer device structure

Technical field

The utility model relates to a kind of transformer device structure, relates in particular to utilize lead and conducting strip to constitute first side winding, secondary side winding respectively, and the transformer with big creepage distance.

Background technology

The transformer of common various kenels, purposes in the electronic circuit, the topmost constituent components of transformer comprises an iron core group, first and second side winding and the drum stand that twines for this first and second side winding, wherein influences this transformer kenel and performance and more significantly is iron core group and drum stand.Wherein, this drum stand will need twine and outlet for winding again for iron core group installing location simultaneously, and is therefore very important with purposes to the transformer performance performance.

Known transformer coil holder is if can be divided into two kinds with the winding canoe, wherein a class is that first and second lateral coil is shared the winding slot in the drum stand, and utilizes the insulating coating of adhesive tape or other material that first and second lateral coil is separated out between first and second lateral coil.This type of coil holder and winding canoe are found in TaiWan, China patent certificate M270474 number " transformer of improvement coiling structure ", this utility model be on the coil holder respectively around on the first siding ring of internal layer, make a separator that first siding ring is coated fully after again around a last second siding ring in this separator outside.Though this kind winding mode can allow first and second lateral coil all on the ectonexine of a coil holder, but the overlapping winding of first and second lateral coil can allow the radius of winding portion increase significantly, and be around in the employed conductor length of every winding one circle of peripheral second siding ring along with slightly increasing, the equiva lent impedance of second siding ring also increases certainly in the lump.Though therefore reduced whole height, but the impedance of width and coil has increased from pin to the transformer top.Moreover, be subject to safety standard, if creepage distance deficiency between first and second lateral coil of transformer, possibly can't will be by limited by safety standard or rated current.

In order to meet safety standard, also there is previous patent that creepage distance is significantly increased, so that be applicable to the transformer that inputs or outputs big electric current.As TaiWan, China patent certificate M349024 number " transformer ", this previous case discloses the coiling lid that linkage section and that its drum stand comprises that two winding regions, separately connect this winding region is covered on this linkage section separably.And define two secondary coils and be wound in respectively on these winding regions, a primary coil is wound in this coiling and covers.And an iron core unit is passed between these winding regions and this linkage section and the coiling lid and is formed a flux path.By in this preceding case graphic as seen, the interval between this primary coil and secondary coil cover by this winding region and coiling, and have enough creepage distances can allow big electric current by this primary coil or secondary coil and meet the safety standard standard.

Yet the transformer that the TaiWan, China patent certificate is disclosed for M349024 number has bigger length, need consider the spatial configuration in the electric equipment in the use.

The utility model content

Because known transformer device structure is in the face of limited the facing a difficult choice of safety standard and electrical equipment inner space, therefore the purpose of this utility model is to provide a kind of structure that increases creepage distance between primary side, the secondary side winding, and still can allow this transformer be applicable to the output of big electric current under the situation that does not increase volume of transformer.

The utility model is a kind of transformer device structure, and this transformer comprises a hollow bobbin, at least one separator, an iron core group and is positioned at first side winding, secondary side winding on this hollow bobbin.Wherein this hollow bobbin has at least one insulating barrier the periphery of hollow bobbin is divided into a winding region and at least one assembly section, and this first side winding is wound in this winding region.Described at least one separator is installed on this assembly section, and this separator has a divider wall that enters this winding region.This separator is other then to have a plurality of conducting strips to be sheathed on this assembly section, electrically connect between a plurality of conducting strips and form at least one secondary side winding, and these conducting strips comprises at least two output pins.This iron core group is passed this hollow bobbin and is formed flux path.This transformer also can comprise an insulating case that separates this primary side, secondary side winding, and a shell.Therefore, can be after the energising of the first side winding of this transformer by at least two output pin output powers of this secondary side winding.And this separator and this divider wall can significantly increase the creepage distance between primary side, the secondary side winding.

In sum, the utility model utilizes separator and this divider wall significantly to increase creepage distance between primary side, the secondary side winding.And this secondary side winding is made of a plurality of conducting strip of equivalent series, has significantly reduced the secondary side winding occupation space.Moreover, so increase of creepage distance, and the conducting strip of this secondary side winding has bigger surface area, this transformer passed through applicable to big electric current, and can meet the restriction of safety standard.

Description of drawings

Fig. 1 is the stereogram of transformer of the present utility model.

Fig. 2 is the exploded view of this transformer.

Fig. 3 is the exploded view of this hollow bobbin, separator and secondary side winding.

Fig. 4 is the profile of this transformer.

Fig. 5 connects the schematic diagram of a circuit substrate for this transformer.

Embodiment

The utility model is a kind of transformer device structure, below will cooperate graphic explanation technology contents of the present utility model.With reference to Fig. 1, Fig. 2 and Fig. 3, the transformer that the utility model discloses comprises a hollow bobbin 1, at least one separator 2 and an iron core group 6, wherein this hollow bobbin 1 has a perforation 12, and this hollow bobbin 1 has at least one insulating barrier 11 periphery of hollow bobbin 1 is divided into a winding region 10 and at least one assembly section 100.In the preferred mode shown in Fig. 1 to Fig. 3 is with two insulating barriers 11 this hollow bobbin 1 to be divided into one to be positioned at the winding region 10 of central authorities and the assembly section 100 that is positioned at these winding region 10 both sides.First side winding 3 is wound on this winding region 10, this first side winding 3 can be copper cash or enamelled wire, between this winding region 10 and this assembly section 100 except separating by this insulating barrier 11, this separator 2 respectively has a perforation 22 and is sheathed on respectively on this assembly section 100, and this separator 2 has the divider wall 21 that enters this winding region 10, makes to have the creepage distance that significantly increases between this first side winding 3 and this assembly section 100.A plurality of conducting strips 41 disperse to be sheathed on this assembly section 100, and also comprise a plurality of insulating trips 42 between these conducting strips 41 and separate mutually.Electrically connect and form at least one secondary side winding between these conducting strips 41, the series connection of can dividing into groups of these conducting strips 41 forms one or more secondary side winding, and these conducting strip 41 formed secondary side winding comprise at least two output pins 411.In order to make these conducting strips 41 form this secondary side winding, a plurality of conducting strips 41 can be by at least one electric connecting terminal 412 to electrically connect adjacent conductive sheet 41, and a plurality of conducting strips 41 that order electrically connects form a secondary side winding.Because the execution mode among Fig. 1 to Fig. 3 has two assembly sections 100 that are positioned at winding region 10 both sides, lay respectively at two conducting strips 41 on the assembly section 100 and can form two groups of secondary side winding respectively again.Moreover this secondary side winding can utilize wherein a conducting strip 41 and different secondary side winding to electrically connect, and forms two groups of secondary side winding parallel connections by the electric connection between the conducting strip 41, perhaps known winding form such as center tap.The electric connecting terminal 412 of adjacent conductive sheet 41 can electrically connect by solder bond, perhaps a plurality of electric connecting terminals 412 insert transformer circuit external substrates 8 (being shown in Fig. 5), and this circuit substrate 8 (being shown in Fig. 5) is provided with the conducting wire (not shown) and makes adjacent electric connecting terminal 412 electrically connect.The utility model does not limit that these conducting strips 41 electrically connect and the mode of series connection, if those skilled in the art can think easily and scope in all should be included in the utility model scope.

So far, this first side winding 3 and secondary side winding all have been positioned on this hollow bobbin 1, and have divider wall 21 multiple the separating on insulating barrier 11, separator 2, the separator 2 between first side winding 3 and the secondary side winding, even therefore can guarantee that this transformer also can meet safety standard requirements by big electric current.In order further to improve its insulating capacity, this hollow bobbin 1, the separator 2 outer insulating cases 5 that also comprise, this hollow bobbin 1, separator 2 are coated in this insulating case 5, and this iron core group 6 is passed the perforation 12 of this hollow bobbin 1, makes this iron core group 6 and this first side winding 3, secondary side winding form flux path.5 of this insulating cases are isolated this iron core group 6 and first side winding 3, secondary side winding and to avoid problem such as short circuit, also to reach this hollow bobbin 1, separator 2 are supported on the effect in the iron core group 6.

Still visible this transformer also comprises a shell 7 in Fig. 1 to Fig. 3, this shell 7 has and holds the space that this hollow bobbin 1, separator 2 and iron core group 6 levels are inserted, this shell 7 is provided with guiding and locatees a support portion 71 of this iron core group 6, and the periphery of this iron core group 6 is provided with the joint portion 61 with the 71 corresponding combinations of this support portion, makes this hollow bobbin 1, separator 2 and iron core group 6 be this shell 7 that places of transverse horizontal.The bottom surface of this shell 7 also has an output breach 72, and the output pin 411 of this secondary side winding extends through output breach 72 downwards.These first side winding 3 outlets for convenience, be provided with this first side winding 3 of support on this shell 7 in addition and stride across this assembly section 100 and the wire holder 73 of outlet, this wire holder 73 is provided with a plurality of wire holes 731 that supply lead to pass, and is different from the direction outlet of these output pin 411 positions with the lead court of guiding first side winding 3.Assembly section 100 peripheries of more visible this hollow bobbin 1 are provided with at least one first location division 13 in Fig. 1 to Fig. 3, and this separator 2, conducting strip 41 are provided with second location division 23,413,423 that cooperates this first location division 13 with insulating trip 42 and are located on this assembly section 100 with fixed cover, this first location division 13 and this second location division 23,413,423 can be respectively the flange or the recessed edge of corresponding interlock, being shaped as those skilled in the art and can changing easily of this flange or recessed edge is so repeat no more.This separator 2 also is provided with an assist location portion 24 and is used for auxiliary adjacent conducting strip 41 location.

The transformer form of above-mentioned each combination of components is found in Fig. 1 and Fig. 4,5, and Fig. 4 is the profile of this transformer, and Fig. 5 is the schematic diagram that this transformer and a circuit substrate 8 electrically connect.The hollow bobbin 1 of visible this transformer and first side winding 3, secondary side winding are this shell 7 that places of transverse horizontal among Fig. 4, and in order to allow this output pin 411 can directly electrically connect this circuit substrate 8, shell 7 should be exported breach 72 and be located at the bottom surface.And for example before described, these electric connecting terminals 412 can electrically connect with adjacent conductive sheet 41 by this circuit substrate 8, so these electric connecting terminals 412 also can be exported breach 72 by this and connect this circuit substrate 8.Above-mentioned output pin 411 and electric connecting terminal 412 can separate among output breach 72 mutually by the staggered of level or upright position.In addition, this wire holder 73 is located at the position far away apart from this output breach 72, to separate the cabling of first side winding 3 and this secondary side winding.By above-mentioned architectural feature, make this transformer can under the situation of smaller size smaller, have enough creepage distances.

Though the utility model discloses as above with preferred embodiment, so it is not in order to limit the utility model.A little change and retouching that those skilled in the art are done under the situation that does not break away from spirit and scope of the present utility model all should be covered by in the utility model, and therefore protection range of the present utility model is when being as the criterion with claims.

Claims

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

One hollow bobbin (1), the periphery of described hollow bobbin (1) is provided with at least one insulating barrier (11), and described at least one insulating barrier is divided into a winding region (10) and at least one assembly section (100) with described hollow bobbin (1);

One is around in the first side winding (3) of described winding region (10);

At least one separator (2), described separator (2) have a perforation (22) and are sheathed on the described assembly section (100), and described separator (2) has a divider wall (21) that enters described winding region (10);

A plurality of conducting strips (41) that are sheathed on the described assembly section (100), a plurality of conducting strips (41) electrically connect and form at least one secondary side winding, and described conducting strip (41) comprises at least two output pins (411);

One is arranged in described hollow bobbin (1) and the iron core group (6) of formation flux path.

2. transformer device structure according to claim 1 is characterized in that, has two insulating barriers (11) on the described hollow bobbin (1) and separates out two assembly sections (100).

3. transformer device structure according to claim 1 is characterized in that, described conducting strip (41) grouping series connection forms a plurality of secondary side winding.

4. transformer device structure according to claim 3 is characterized in that, comprises a conducting strip (41) and different secondary side winding electric connection in the described secondary side winding.

5. transformer device structure according to claim 1 is characterized in that, also comprises a plurality of insulating trips (42) between the described conducting strip (41).

6. transformer device structure according to claim 1 is characterized in that, described transformer also comprises an insulating case (5), and described insulating case is isolated described iron core group (6) and first side winding, secondary side winding.

7. transformer device structure according to claim 1, it is characterized in that, described transformer also comprises a shell (7), described shell (7) has and holds the space that described hollow bobbin (1), separator (2) and iron core group (6) level are inserted, and the bottom surface of described shell (7) has an output breach (72) that extends for described output pin (411) downwards.

8. transformer device structure according to claim 7, it is characterized in that, a support portion (71) that has the described iron core group in location (6) on the described shell (7), and the periphery of described iron core group (6) is provided with the joint portion (61) with the corresponding combination in described support portion (71).

9. transformer device structure according to claim 7 is characterized in that, described shell (7) is provided with a wire holder (73), and described wire holder guides the lead of described first side winding (3) towards the direction outlet that is different from described output pin (411) position.

10. transformer device structure according to claim 1, it is characterized in that, the periphery of described assembly section (100) is provided with at least one first location division (13), and described separator (2), conducting strip (41) are provided with and cooperate second location division (23,413) of described first location division (13) to be located on the described assembly section (100) with fixed cover.