CN201708001U - Low magnetic leakage high frequency transformer - Google Patents
Low magnetic leakage high frequency transformer Download PDFInfo
- Publication number
- CN201708001U CN201708001U CN2010202270110U CN201020227011U CN201708001U CN 201708001 U CN201708001 U CN 201708001U CN 2010202270110 U CN2010202270110 U CN 2010202270110U CN 201020227011 U CN201020227011 U CN 201020227011U CN 201708001 U CN201708001 U CN 201708001U
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- high frequency
- frequency transformer
- magnetic core
- lower cover
- leakage high
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Abstract
The utility model discloses a low magnetic leakage high frequency transformer comprising a magnetic core and a winding group arranged on the magnetic core, wherein the winding group comprises a ring-shaped winding seat and a coil which is wound on the winding seat; the magnetic core comprises an upper cover, a lower cover and a fixing part capable of mutually buckling the upper cover and the lower cover; and the bottom of an inner cavity of the lower cover is provided with a convex cylinder which is matched with an inner ring of the ring-shaped winding seat and can be inserted into the inner ring. The low magnetic leakage high frequency transformer has reasonable and compact structural design; the magnetic core comprises the upper cover and the lower cover, and the coil is totally wrapped inside the magnetic core, thereby reducing radiation noise generated by magnetic leakage and inductance leakage, improving the reliability of products, fully utilizing magnetic field, improving the conversion efficiency and output power of a power supply, saving energy, effectively reducing the magnetic leakage, inductance leakage, surface action, skin effect and proximity effect to the minimum level and reducing body harm. In addition, the low magnetic leakage high frequency transformer has small volume, and is convenient in mounting and dismounting, and especially suitable for small sized power suppliers or adaptors.
Description
Technical field
The utility model relates to transformer, is specifically related to a kind of low magnetism leakage high frequency transformer.
Background technology
According to Faraday's electromagnetic induction law as can be known, in alternating current circuit, the magnetic line of force is time dependent, and therefore, the height of voltage and the size of electric current also can change thereupon, and people have made various forms of transformers according to this principle.In recent years, switch power technology is just towards aspect development such as efficient, energy-conservation, safety, environmental protection, volume are little.In the Switching Power Supply of no industrial frequency transformer, high frequency transformer is one of core component, in Design of High Frequency Transformer is the key technology of Switching Power Supply, high frequency transformer design whether reasonable can have influence on the cost, volume, stability, electromagnetic interference, radiated noise, EMI filtering, power output, conversion efficiency of shape power supply etc.
The core structure of traditional transformer is substantially: " E " type, " C " type or " O " type structure, owing to employing between these magnetic cores and the coil is the structure of " circuit encirclement magnetic circuit ", the part magnetic field of coil both sides can not be fully utilized, therefore, magnetic flux leakage is bigger, causes the efficient of transformer low, volume is big, cost is high, and it is very big to produce magnetic interference when serving power supply, temperature is too high, can cause other parts to damage easily.。And its structural design defective tightness, be prone to problems such as leakage field, leakage inductance, iron loss, exciting current are big, radiating condition is poor, the efficient low noise is big, and raising along with frequency, even also exist even more serious collection skin, problems such as table and proximity effect become, will cause bad injury to human body, in addition, assembling is a trouble with installing enough, is unfavorable for safeguarding.
The utility model content
The purpose of this utility model is, at the above-mentioned deficiency of existing transformer, provides that a kind of structure is tight, volume is little, stability is high, and is easy to loading and unloading and leakage field is little, reduces the low magnetism leakage high frequency transformer to human body harm.
For achieving the above object, technical scheme provided by the utility model is:
A kind of low magnetism leakage high frequency transformer, it comprises that magnetic core and is arranged on the coiling group on this magnetic core, described coiling group comprises a ring winding seat and a coil that is wrapped on this bobbin winder base, described magnetic core comprises a loam cake, a lower cover and the fixture that this loam cake and lower cover are fastened mutually, in the intracavity bottom of described lower cover be provided with one with the interior ring of described ring winding seat suitable and can insert convex cylindrical in it.
The bottom outer rim of described bobbin winder base is provided with a plurality of fixed parts that are used for fixing the line end of described coil.
Described fixed part is four, and it is the bottom that the center of circle is symmetricly set on described bobbin winder base respectively.
The position of corresponding described fixed part is provided with the opening that allows this fixed part expose in described magnetic core.
Described fixture is a rubber-like sheet noumenon, the two ends of this sheet noumenon bend to the same side, wherein, one end forms button portion, the other end forms down button portion, and be provided with and should go up suitable the last button bit of button portion corresponding to the described tops of going up, be provided with suitable following button bit in described lower cover bottom with this time button portion, be convenient to dismounting and assemble.
The described middle part of button portion down bends and extends to form a vertical portion downwards, is convenient to install and fix and dismantle.
The beneficial effects of the utility model are: the utility model reasonable in design, closely, magnetic core is made up of loam cake and lower cover, coil coats within it fully, can reduce because of leakage field, leakage inductance and the radiated noise that produces, improved reliability of products, therefore, the conversion efficiency and the power output of power supply have also been improved, energy savings, magnetic field energy is fully utilized, has reduced greatly, will allow whole spare part that more stable efficient is provided other damage parts, and can be effectively with the leakage field of transformer, leakage inductance, the collection skin, table and the proximity effect of becoming is reduced to minimum level, reduces the human injury; Fixture adopts fastening structure, ingenious loam cake and lower cover is fastened mutually, and forms the magnetic core of integral structure, and volume is little, cooperations is firm, and convenient for assembly and dismantle, and when reducing cost, promoting productivity ratio, maintains easily again; Be particularly useful for more small-sized power supply unit or adapter.
Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.
Description of drawings
Fig. 1 is a perspective view of the present utility model;
Fig. 2 is the upward view structural representation of Fig. 1;
Fig. 3 is the decomposition texture schematic diagram of Fig. 1.
Embodiment
Embodiment, referring to Fig. 1, Fig. 2 and Fig. 3, a kind of low magnetism leakage high frequency transformer that present embodiment provides, it comprises that magnetic core 1 and is arranged on the coiling group 2 on this magnetic core 1, described coiling group 2 comprises that a ring winding seat 21 and is wrapped in the coil (not identifying among the figure) on this bobbin winder base 21, described magnetic core 1 comprises a loam cake 11, one lower cover 12 and the fixture 13 that this loam cake 11 and lower cover 12 are fastened mutually, magnetic core 1 is made up of loam cake 11 and lower cover 12, coil coats within it fully, can reduce because of leakage field, leakage inductance and the radiated noise that produces, improved reliability of products, therefore, also improved the conversion efficiency and the power output of power supply, energy savings is fully utilized magnetic field energy, reduced greatly other damage parts, will allow whole spare part that more stable efficient is provided, and can be effectively with the leakage field of transformer, leakage inductance, the collection skin, table and the proximity effect of becoming is reduced to minimum level, reduces the human injury; In the intracavity bottom of described lower cover 12 be provided with one with the interior ring 211 of described ring winding seat 21 suitable and can insert convex cylindrical 121 in it.The bottom outer rim of described bobbin winder base 21 is provided with a plurality of fixed parts 212 that are used for fixing the line end of described coil.Described fixed part 212 is four, and it is the bottom that the center of circle is symmetricly set on described bobbin winder base 21 respectively.The position of corresponding described fixed part 212 is provided with the opening 14 that allows this fixed part 212 expose in described magnetic core 1.Described fixture 13 is a rubber-like sheet noumenon, the two ends of this sheet noumenon bend to the same side, wherein, one end forms button portion 131, the other end forms down button portion 132, and be provided with the last button bit 15 suitable with going up button portion 131 corresponding to described loam cake 11 tops, be provided with the following button bit 16 suitable with this time button portion 132 in described lower cover 12 bottoms, fixture 13 adopts fastening structures, ingenious loam cake 11 and lower cover 12 is snapped together mutually, and forms the magnetic core 1 of integral structure, volume is little, cooperate firmly, and convenient for assembly and dismounting is reducing cost, when promoting productivity ratio, maintain easily again; The described middle part of button portion 132 down bends and extends to form a vertical portion 133 downwards, is convenient to install and fix and dismantle.
As described in the utility model the foregoing description, adopt structure same or analogous and the transformer of other structure of obtaining, all in the utility model protection range with it.
Claims (6)
1. low magnetism leakage high frequency transformer, it comprises that magnetic core and is arranged on the coiling group on this magnetic core, it is characterized in that, described coiling group comprises a ring winding seat and a coil that is wrapped on this bobbin winder base, described magnetic core comprises a loam cake, a lower cover and the fixture that this loam cake and lower cover are fastened mutually, in the intracavity bottom of described lower cover be provided with one with the interior ring of described ring winding seat suitable and can insert convex cylindrical in it.
2. low magnetism leakage high frequency transformer according to claim 1 is characterized in that: the bottom outer rim of described bobbin winder base is provided with a plurality of fixed parts that are used for fixing the line end of described coil.
3. low magnetism leakage high frequency transformer according to claim 2 is characterized in that: described fixed part is four, and it is the bottom that the center of circle is symmetricly set on described bobbin winder base respectively.
4. low magnetism leakage high frequency transformer according to claim 1 and 2 is characterized in that: the position of corresponding described fixed part is provided with the opening that allows this fixed part expose in described magnetic core.
5. low magnetism leakage high frequency transformer according to claim 1, it is characterized in that: described fixture is a rubber-like sheet noumenon, the two ends of this sheet noumenon bend to the same side, wherein, one end forms button portion, the other end forms down button portion, and is provided with and is somebody's turn to do the upward suitable last button bit of button portion corresponding to described upward tops, is provided with the suitable following button bit with this time button portion in described lower cover bottom.
6. low magnetism leakage high frequency transformer according to claim 5 is characterized in that: the described middle part of button portion down bends and extends to form a vertical portion downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202270110U CN201708001U (en) | 2010-06-03 | 2010-06-03 | Low magnetic leakage high frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202270110U CN201708001U (en) | 2010-06-03 | 2010-06-03 | Low magnetic leakage high frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708001U true CN201708001U (en) | 2011-01-12 |
Family
ID=43445156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202270110U Expired - Lifetime CN201708001U (en) | 2010-06-03 | 2010-06-03 | Low magnetic leakage high frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708001U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346002A (en) * | 2013-07-24 | 2013-10-09 | 青岛菲特电器科技有限公司 | Transformer for novel electric welding machine |
| CN107516583A (en) * | 2017-10-18 | 2017-12-26 | 冯迎安 | A kind of Novel inductor |
| CN107527722A (en) * | 2017-10-18 | 2017-12-29 | 冯迎安 | A kind of low magnetism leakage, low-loss, efficient PFC inducer |
-
2010
- 2010-06-03 CN CN2010202270110U patent/CN201708001U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346002A (en) * | 2013-07-24 | 2013-10-09 | 青岛菲特电器科技有限公司 | Transformer for novel electric welding machine |
| CN107516583A (en) * | 2017-10-18 | 2017-12-26 | 冯迎安 | A kind of Novel inductor |
| CN107527722A (en) * | 2017-10-18 | 2017-12-29 | 冯迎安 | A kind of low magnetism leakage, low-loss, efficient PFC inducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
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| CX01 | Expiry of patent term |