CN201877262U

CN201877262U - Transformer

Info

Publication number: CN201877262U
Application number: CN2010205115742U
Authority: CN
Inventors: 张哲嘉
Original assignee: SHOWWELL CO Ltd
Current assignee: SHOWWELL CO Ltd
Priority date: 2010-09-01
Filing date: 2010-09-01
Publication date: 2011-06-22
Anticipated expiration: 2020-09-01

Abstract

Provided is a transformer including a coiling rack, a coiling and two magnetic cores; the coiling rack, in the shape of a cuboid, is provided with a circular groove on the periphery, a through hole in the center and a plurality of pins on the two short side edges; the coiling is wound in the circular groove and the both ends of the coiling are electrically connected to at least one pin on the both sides of the coiling rack; the two magnetic cores are symmetrically combined on the upper and lower sides of the coiling rack, each magnetic core is provided with a plate body as well as two strip-shaped side columns and a stripe-shaped middle column which are integratedly protruded on the same side surface of the plate body, the two side columns are arranged on the two long side edges of the plate body and the middle column is arranged between the two side columns and is parallel to the two side columns, both ends of the two side columns and the middle column are extended to the two short side edges of the plate body, the two side columns of the two magnetic cores are protrudingly extended to the external sides of the two long side edges of the coiling rack and the end faces of every two corresponding side columns are connected, the middle columns of the two magnetic cores are protrudingly extended into the through hole of the coiling rack and the end faces of the two middle columns are connected; such a structure enables the transformer provided to realize better voltage transfer efficiency.

Description

Transformer

Technical field:

The utility model relates to the technical field of electronic building brick aspect, refers to a kind of good transformer of voltage transitions efficient that makes especially.

Background technology:

See also Figure 1 and Figure 2, show that general known transformer comprises a spool stand 10, a coiling 11 and two magnetic cores 12.Wherein, this spool stand 10 has a circular columns 13, and the side face of this circular columns 13 has a groove 14 for these 11 windings that wind the line, and has the bottom that a circular hole 140 penetrates into this spool stand 10 in the end face of this circular columns 13.These two magnetic cores, 12 symmetrical junctions are combined in the upper and lower side of this spool stand 10, and each magnetic core 12 has a plate body 15 and one and protrudes two protuberances 16 and a projection 17 in the same side of this plate body.This plate body 15 is rectangle, and 16 of this two protuberances are at two short sides of this plate body 15, and the rounded and position of this projection 17 is in central authorities of this plate body 15, and the medial surface of this two protuberance 16 is the arc surface with these projection 17 concentrics.The protuberance 16 of the both sides of this two magnetic core 12 protrudes out the outside on the limit, two opposite sides of this spool stand 10, and the end face of two corresponding protuberances 16 joins, and the projection 17 of this two magnetic core 12 protrudes out in the circular hole 140 of this spool stand 10, and the end face of this two projection 17 joins.

Yet, because the plate body 15 of this two magnetic core 12, two protuberances 16 are circular arc with the flux closure path that projection 17 is constituted, and the width at the width at each position of this two protuberance 16 and these projection 17 each positions is not consistent, so the magnetic flux instability in its formed flux closure path.And should coiling 11 windings on this spool stand 10 time, this coiling 11 is exposed the part in this flux closure path much larger than the part of position in this flux closure path, thereby leakage flux is big, the magnetic field line that all side's of not being output coils receive all can cause energy to run off, and magnetic force makes iron core produce the loopback electric current, cause to be quantized into heat and also run off, therefore produce eddy current and undermine the magnetic force loss to extraneous.So the voltage transitions efficient of the transformer that this is known is not good.

In view of this, the inventor is at the many problem that imperfection produced of above-mentioned known transformer on structural design, and deeply design, and the active research improvement has a fling at and development and Design goes out this creation.

The utility model content:

Technical problem to be solved in the utility model is: at above-mentioned the deficiencies in the prior art, provide a kind of good transformer of voltage transitions efficient that makes.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of transformer, and comprise spool stand, coiling, reach two magnetic cores, this spool stand surrounding is equipped with a circular groove, central authorities have the upper and lower through hole of perforation, and have several lead foots and circuit board electric connection; This coiling winding is in this circular groove, and two ends electrically connect with at least one lead foot of the both sides of this spool stand respectively; This two magnetic cores symmetrical junction is combined in the upper and lower side of this spool stand, and each magnetic core has a plate body that is rectangle; Be characterized in: described spool stand is a cuboid, and several lead foots are located at two short sides respectively at interval; Each magnetic core also has one and protrudes a two side columns and a center pillar that is strip in this plate body same side, this two side columns position is at two long sides of this plate body, this center pillar position is between this two side columns and parallel with this two side columns, the two ends of this two side columns and this center pillar extend to two short sides of this plate body respectively, the two side columns of this two magnetic core protrudes out the two long sides outside of this spool stand, and the end face of two corresponding lateral columns joins, the center pillar of this two magnetic core protrudes out in the through hole of this spool stand, and the end face of this two center pillar joins.

So, making up the flux closure path that can therebetween form two vertical bar shapes by the butt joint of this two magnetic core wears for this coiling, and the two side columns of this two magnetic core is the strip of width, the center pillar of this two magnetic core also is wide strip, so the more known transformer person of the magnetic flux in this flux closure path is stable.And should coiling winding on this spool stand the time, this coiling is exposed the part in this flux closure path much smaller than the part of position in this flux closure path, so the more known transformer of leakage flux is little, and in the transformer formula:

E＝4.44×F×n×a×b

E is the root average of voltage of this coil of flowing through;

F is the frequency (unit is hertz) of electric current;

N is the number of turns of coil;

A is the cross section area in space (iron core) in the coil;

B is the magnetic force by space in the coil (iron core).This value is to calculate with per unit area, and the unit of area is identical with variable a.

Constant value 4.44 is for the formula result is established corresponding to the unit that calculates.

And the center pillar of the utility model two magnetic cores presents the maximization of present homalographic transformer, and two lateral columns also form present homalographic transformer closed the most.So the utility model can reach the difficult eddy current that produces of more known transformer by said structure and undermine the magnetic force loss and increase voltage output stability, the difficult heating and good voltage transitions efficient.

Description of drawings:

Fig. 1 is the three-dimensional exploded view of known transformer.

Fig. 2 is the three-dimensional combination figure of known transformer.

Fig. 3 is a three-dimensional exploded view of the present utility model.

Fig. 4 is a three-dimensional combination figure of the present utility model.

Fig. 5 is a vertical view of the present utility model.

Fig. 6 is the section enlarged diagram of Fig. 5 along the A-A line.

Fig. 7 is the section enlarged diagram of Fig. 5 along the B-B line.

Fig. 8 is second kind of enforcement state of the utility model lead foot.

Fig. 9 is the third enforcement state of the utility model lead foot.

Figure 10 is the 4th a kind of enforcement state of the utility model lead foot.

Label declaration:

Spool stand 10 coilings 11

Magnetic core 12 circular columns 13

Groove 14 circular holes 140

Plate body 15 protuberances 16

Projection 17 spool stands 20

Circular groove 21 through holes 22

Lead foot 23 upper grooves 24

Low groove 25 coilings 30

Magnetic core 40 plate bodys 41

Lateral column 42 center pillars 43

Embodiment:

See also Fig. 3 to shown in Figure 7, show that transformer described in the utility model comprises a spool stand 20, a coiling 30 and two magnetic cores 40.Wherein:

This spool stand 20 is cuboid, the surrounding is equipped with a circular groove 21, and central authorities have the upper and lower through hole 22 of perforation, and being interval with several lead foots 23 respectively in two short sides can be for electrically connecting with a circuit board (not shown), have a upper groove 24 in end face, have a low groove 25 in the bottom surface.

This winds the line 30 windings in this circular groove 21, and two ends electrically connect with at least one lead foot 23 of the both sides of this spool stand 20 respectively.

These two magnetic cores, 40 symmetrical junctions are combined in the upper and lower side of this spool stand 20, and each magnetic core 40 has a two side columns 42 and the center pillar 43 that a plate body 41 and one are protruded in the same side of this plate body 41 and be strip.This plate body 41 is rectangle and can be for being embedded among this upper groove 24 or this low groove 25.42 two long sides at this plate body 41 of this two side columns, 43 of this center pillars are between this two side columns 42 and parallel with this two side columns 42.The two ends of this two side columns 42 and this center pillar 43 extend to two short sides of this plate body 41 respectively, make whole section be the E font, and the width of this center pillar 43 are greater than the width of this lateral column 42.

The two side columns 42 of this two magnetic core 40 protrudes out the outside of two long sides of this spool stand 20, and the end face of two corresponding lateral columns 42 joins.The center pillar 43 of this two magnetic core 40 protrudes out among the through hole 22 of this spool stand 20, and the end face of this two center pillar 43 joins.The flux closure path that just can form two vertical bar shapes by this between this two magnetic core 40 is passed for this coiling 30.

See also shown in Figure 8ly, be second kind of enforcement state of lead foot 23 of the present utility model, point out that several lead foots 23 of these spool stand 20 both sides are horizontal straight shape pin.

See also shown in Figure 9ly, be the third enforcement state of lead foot 23 of the present utility model, point out that several lead foots 23 of these spool stand 20 both sides are the span pin of vertical, and this span pin is located at the bottom of this spool stand 20.

See also shown in Figure 10ly, be the 4th kind of enforcement state of lead foot 23 of the present utility model, point out that several lead foots 23 of these spool stand 20 both sides are rectangular-shaped span pin.

Claims

1. a transformer comprises spool stand, coiling, reaches two magnetic cores, and this spool stand surrounding is equipped with a circular groove, and central authorities have the upper and lower through hole of perforation, and has several lead foots and circuit board electric connection; This coiling winding is in this circular groove, and two ends electrically connect with at least one lead foot of the both sides of this spool stand respectively; This two magnetic cores symmetrical junction is combined in the upper and lower side of this spool stand, and each magnetic core has a plate body that is rectangle; It is characterized in that:

Described spool stand is a cuboid, and several lead foots are located at two short sides respectively at interval; Each magnetic core also has one and protrudes a two side columns and a center pillar that is strip in this plate body same side, this two side columns position is at two long sides of this plate body, this center pillar position is between this two side columns and parallel with this two side columns, the two ends of this two side columns and this center pillar extend to two short sides of this plate body respectively, the two side columns of this two magnetic core protrudes out the two long sides outside of this spool stand, and the end face of two corresponding lateral columns joins, the center pillar of this two magnetic core protrudes out in the through hole of this spool stand, and the end face of this two center pillar joins.

2. transformer as claimed in claim 1 is characterized in that: the section of described two magnetic cores is the E font.

3. transformer as claimed in claim 1 is characterized in that: the end face of described spool stand has the upper groove of the plate body of the magnetic core that holds upside.

4. transformer as claimed in claim 3 is characterized in that: the bottom surface of described spool stand has the low groove of the plate body of the magnetic core that holds downside.

5. transformer as claimed in claim 1 is characterized in that: the width of the center pillar of described magnetic core is greater than the width of this lateral column.

6. transformer as claimed in claim 1 is characterized in that: several lead foots of described spool stand both sides are horizontal straight shape pin.

7. transformer as claimed in claim 1 is characterized in that: several lead foots of described spool stand both sides are the span pin of vertical, and this span pin is located at the bottom of this spool stand.