CN201655484U

CN201655484U - Low flux leakage transformer

Info

Publication number: CN201655484U
Application number: CN2009200616677U
Authority: CN
Inventors: 张婕
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-04
Filing date: 2009-08-04
Publication date: 2010-11-24
Anticipated expiration: 2019-08-04

Abstract

The utility model discloses a low flux leakage transformer. The transformer comprises a wire holder and an iron core set in which the wire holder is arranged. The wire holder comprises a winding area, a magnet conductive channel arranged in the wire holder along the winding area and a pin part for connecting an electronic circuit board. A holding space for arranging the wire holder and a solid core part penetrating through the magnet conductive channel are arranged in the iron core set mutually combined, the surface of the iron core set is provided with an opening section and a wrapping section connected with the opening section, the pin part is exposed by the corresponding opening section, the winding area is covered by the wrapping section, and the wrapping section is longer than the opening section. Compared with the traditional transformer, the utility model has the advantages that the wrapping section of the second iron core is longer than the opening section of the first iron core, so the length of the opening section is reduced, flux leakage effect can be effectively reduced, cross area can be obviously increased by improving the iron core shape, electronic assembly mutual interference due to flux leakage is reduced, and electronic assembly service life is extended.

Description

The low magnetism leakage transformer

Technical field

The utility model relates to a kind of transformer, is specifically related to a kind of transformer of low magnetism leakage.

Background technology

Transformer is a kind of electronic building brick commonly used, general power circuit all needs to use transformer, the major function of transformer is to promote or reduce voltage, the size of current of electronic circuit, at present electronic product except move towards compact, space between electronic building brick and the electronic building brick also dwindles day by day, thus the problem that interferes with each other between electronic building brick also become more serious.

In the present existing technology, a kind of transformer is arranged, its structure includes a hollow base and two half round iron cores, two half round iron cores are combined in outside this pedestal, and this pedestal is wrapped in wherein, respectively there is a cylinder to pass the hollow part of this pedestal in the two half round iron cores and joins, be an EE sections cored structure.This invention provides one combination to be installed easily and quick transformer, but this invents the described two half round iron hearts and do not coat this pedestal fully, can make after the combination that the coil of some is exposed to outside, coil damages easily, and can't solve the problem of leakage field.Have again in the patent M350083 file of Taiwan and mentioned in the EE sections core, cylinder in two iron cores joins and forms a gap, thereby produced leakage field and pass outwards through coil and make coil temperature raise, and then also allow the temperature of transformer and then raise, so this application case is twined the district at the pedestal coil and is provided with a fin, this fin is arranged on cylinder with respect to two iron cores and joins and form the position in gap, when twining, coil can avoid fin, therefore the leakage field of gap generation can pass fin rather than pass coil, and then generation heat, the thermal loss that is produced when therefore transformer uses, the degree that temperature rises just can reduce, but the area effect that fin takies the coil range size of twining, make the wire circle of winding tail off.The number of turns that coil twines and the efficient of this transformer have very big relevant, though fin has partly reduced the heat generation, and the also relative number of turns that has influence on this coil winding, and then have influence on the efficient of transformer.Another Taiwan patent then provides for M264632 number a follow-on iron core to reduce the leakage field effect, this patent has a pair of iron core that respectively has four concane gaps in order to coat pedestal, these four concane gaps are used the pin for this pedestal to stretch out outside this iron core to be connected with external circuit, the iron core breach of the relative I258775 patent of this iron core breach case is less, can effectively reduce the leakage field effect, but this is to an opening still occurring between its concane gap of iron core combination back, the base part zone is exposed to outside it because of this breach, still makes the problem of leakage field effect to be resolved fully.

The utility model content

The technical problems to be solved in the utility model provides and a kind ofly can solve transformer leakage field effect, and the leakage field effect of avoiding transformer to produce disturbs electronic building brick work, cause electronic building brick to heat up and damage the low magnetism leakage transformer of electronic building brick.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of low magnetism leakage transformer, comprise: a coil holder body, include coiling zone, that first baffle plate that is arranged at these coil holder body both sides respectively and second baffle, twine for coil and be arranged at magnetic conduction passage in the coil holder body and the pin portion that is connected in first baffle plate along the coiling zone between first, second baffle plate; And first iron core and second iron core, establish the two ends of coil holder body respectively, first iron core is provided with the first real core, second iron core is provided with the second real core, first, second iron core makes up its inner formation one of back mutually and supplies the accommodation space of this coil holder body installing and be arranged in the real core of being made up of the first real core and the second real core in the magnetic conduction passage, first iron core connects and hides the regional coating section of this coiling with the open section that has this pin portion installing of corresponding confession second iron core overseas week of support body winding region along the line respectively and with this open section, and the coating segment length of second iron core is greater than the open section length of first iron core.

Further, described first iron core and the second iron core periphery respectively have plural first depressed area and plural second depressed area, and the position of first depressed area and second depressed area is corresponding to the position of pin portion.

Further, described coating segment length is three times of this open section length.

Further, described open section length is identical with this pin minister degree, coats to coat this coiling zone fully after section is joined with open section.

Further, described first iron core and this second iron core outer rim respectively are provided with a junction surface, are buckled in the joint portion by buckling piece between first iron core and second iron core and are fixed together.

Further, described junction surface has an intilted groove, and described buckling piece has a bending end corresponding to each groove, and bending end links closely first iron core and second iron core.

Described coil holder body is rounded.

Described coil holder body ovalize.

The utility model exposes a breach with respect to prior art is only cored with pin portion joint, compare with traditional transformer, the coating segment length of second iron core is greater than the open section length of first iron core, thereby the length of having reduced open section, can effectively reduce the leakage field effect, and core configuration by improvement, obviously enlarged cross section is long-pending, sectional area of the present utility model is greater than traditional square core structure, thereby reduced interference that produces because of leakage field between electronic building brick and the life-span of improving electronic building brick.

Description of drawings

Fig. 1 is the utility model embodiment 1 perspective view;

Fig. 2 is the utility model embodiment 1 cutaway view;

Fig. 3 is the utility model embodiment 1 decomposition texture schematic diagram;

Fig. 4 is the utility model embodiment 2 cutaway views.

Among the figure, 10 for coil holder body, 11 be first baffle plate, 111 for pin portion, 12 for second baffle, 13 for coiling zone, 14 for the magnetic conduction passage, 20 for iron core group, 21 be first iron core, 211 for open section, 212 be that first junction surface, 213 is that the first real core, 214 is that first depressed area, 22 is that second iron core, 221 is that second junction surface, 223 is that the second real core, 224 is that second depressed area, 23 is bending end for buckling piece, 41 for accommodation space, 40 for coating section, 222.

Embodiment

Embodiment 1, with reference to Fig. 1, Fig. 2 and Fig. 3, described low magnetism leakage transformer, comprise that coil holder body 10 and this coil holder body 10 of confession are installed in iron core group 20 wherein, coil holder body 10 is a circular hollow, coil holder body 10 includes first baffle plate 11 and second baffle 12 that is arranged at these coil holder body 10 both sides respectively, and wherein first baffle plate 11 is the two ends that circle and two

baffle plates

11,12 are vertically connected at coil holder body 10 with the shape of second baffle 12 corresponding to coil holder body 10.Coil holder body 10 also contains a coiling zone 13 and of twining for coil along these coiling zone 13 magnetic conduction passages 14 that are arranged in the coil holder body 10 between first baffle plate 11 and second baffle 12, magnetic conduction passage 14 passes first baffle plate 11, second baffle 12 communicates with the external world, and coil holder body 10 includes the pin portion 111 that a plural number is connected in first baffle plate 11 in addition.

Iron core group 20 includes first iron core 21 and second iron core 22, is arranged at first baffle plate 11 and second baffle 12 two ends respectively.The shape of iron core group 20 is corresponding with coil holder body 10, and first iron core 21 and second iron core 22 respectively have plural first depressed area 214 and plural second depressed area 224, the position of the position of this plural number first depressed area 214 and this plural number second depressed area 224 and plural pin portion 111 is corresponding, and first iron core 21 and second iron core 22 mutually its inner accommodation space 23 and for 10 installings of coil holder body that can form of combination back be arranged in first real core 213, the second real core 223 in the magnetic conduction passage 14.Compare with general iron core group,, magnetic signature is improved, and then reduce the temperature rise of transformer because this iron core group 20 has plural depressed area 214 and plural depressed area 224 thereby make this iron core group 20 and the contact-making surface of pin portion 111 diminish.These iron core group 20 uses in the present embodiment is EE sections core in addition, this reality core is made up of the first real core 213 and the second real core 223, it corresponds respectively to first iron core 21 and second iron core 22, and the first real core 213 and the second real core 223 are being connected to after

first iron core

21 and 22 combinations of second iron core among the magnetic conduction passage 14 mutually.

First iron core 21 and regional 13 peripheries of second iron core 22 support bodys 10 coilings along the line have open section 211 that this pin portion 111 of plural corresponding confession exposes respectively and connect and hide the coating section 221 in coiling zone 13 with this open section 211, and coating section 221 length of second iron core 22 are greater than the length of the open section 211 of first iron core 21.Coating section 221 length are to make after these iron core group 20 combinations greater than open section 211 length, can reduce the breach area of open section 211, and then reach the effect that reduces leakage field.And in this embodiment, the length that coats section 221 can be three times of open section 211 length, and it is minimum to make the leakage field effect reduce to.

First iron core 21 is respectively arranged with first junction surface 212 with second iron core, 22 outer rims and second junction surface 222 is connected for buckling piece 40, to guarantee the location between first iron core 21 and second iron core 22.

For preventing that this buckling piece 40 from getting loose in first iron core 21 and second iron core 22, first junction surface 212 and second junction surface 222 have an intilted groove, and buckling piece 40 corresponds to each groove and has a bending end 41, bending end 41 links closely first iron core 21 and second iron core 22, and it can not got loose because of slip.

Embodiment 2, with reference to Fig. 4, wherein open section 211 length are identical with pin portion 111 length, coat and coat this coiling regional 13 when section 221 is joined with open section 211 fully, become an airtight transformer after making

win iron core

21 and 22 combinations of second iron core, the other parts structure is identical.

Below the utility model is described in detail, the above only is one of the utility model preferred embodiment, when the scope that can not limit this novel enforcement.Be that the equalization done of the novel application range of Fan Yiben changes and modifies etc., all should still belong in the covering scope of the utility model.

Claims

1. low magnetism leakage transformer, comprise: a coil holder body, include coiling zone, that first baffle plate that is arranged at these coil holder body both sides respectively and second baffle, twine for coil and be arranged at magnetic conduction passage in the coil holder body and the pin portion that is connected in first baffle plate along the coiling zone between first, second baffle plate; And first iron core and second iron core, establish the two ends of coil holder body respectively, it is characterized in that: first iron core is provided with the first real core, second iron core is provided with the second real core, first, second iron core makes up its inner formation one of back mutually and supplies the accommodation space of this coil holder body installing and be arranged in the real core of being made up of the first real core and the second real core in the magnetic conduction passage, first iron core connects and hides the regional coating section of this coiling with second iron core along the open section that has this pin portion installing of corresponding confession this overseas week of coil holder body winding region respectively and with this open section, and the coating segment length of second iron core is greater than the open section length of first iron core.

2. low magnetism leakage transformer according to claim 1 is characterized in that: described first iron core and the second iron core periphery are provided with plural first depressed area and plural second depressed area, and the position of first depressed area and second depressed area is corresponding to the position of this pin portion.

3. low magnetism leakage transformer according to claim 1 is characterized in that: described coating segment length is three times of this open section length.

4. low magnetism leakage transformer according to claim 1 is characterized in that: described open section length is identical with this pin minister degree, coats to coat this coiling zone fully after section is joined with open section.

5. low magnetism leakage transformer according to claim 1 is characterized in that: described first iron core and this second iron core outer rim respectively are provided with a junction surface, are buckled in the joint portion by buckling piece between first iron core and second iron core and are fixed together.

6. low magnetism leakage transformer according to claim 1 is characterized in that: described junction surface has an intilted groove, and described buckling piece has a bending end corresponding to each groove, and bending end links closely first iron core and second iron core.

7. low magnetism leakage transformer according to claim 1 is characterized in that: described coil holder body is rounded.

8. low magnetism leakage transformer according to claim 1 is characterized in that: described coil holder body ovalize.