CN104505223A - Improved structure of magnetic cores and winding framework - Google Patents
Improved structure of magnetic cores and winding framework Download PDFInfo
- Publication number
- CN104505223A CN104505223A CN201410428305.2A CN201410428305A CN104505223A CN 104505223 A CN104505223 A CN 104505223A CN 201410428305 A CN201410428305 A CN 201410428305A CN 104505223 A CN104505223 A CN 104505223A
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- magnetic core
- bobbin
- magnetic cores
- winding
- heat dissipation
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Abstract
The invention discloses an improved structure of magnetic cores and a winding framework. The improved structure comprises a pair of the magnetic cores, the winding framework and a winding coil, wherein the coil is wound in a wire groove of the winding framework in a coiled manner; magnetic core center posts of the magnetic cores are inserted into a center hole of the winding framework in an aligned manner; the magnetic cores are provided with annular walls to surround the winding coil and the winding framework; windows are formed in the annular walls of the magnetic cores; the winding framework outwards extends at the windows to form pole leg supports; the inner bottom face of either of the two magnetic cores or the inner bottom faces of both the two magnetic cores are provided with division heat dissipation grooves; one end of each diversion heat dissipation groove leads to one window while the other end of each diversion heat dissipation groove leads to the interior of the corresponding magnetic core; and groove openings corresponding to the diversion heat dissipation grooves are formed in a clamping plate or clamping plates at one or two ends of the winding framework. The structure can allow insulating paint to uniformly penetrate into gaps of parts of an inductor or a transformer, so that the insulating property is improved effectively and the vibration noise is reduced effectively; heat dissipation of an inner layer of the winding coil and the magnetic core center posts is facilitated, so that the heat dissipation property is improved; and the improved structure is simple and can be widely applied to various inductors or transformers.
Description
Technical field
The present invention relates to a kind of magnetic core for inductor or transformer and bobbin, especially relate to the modified node method of magnetic core and bobbin.
Background technology
At present, Split-type inductor common on market or transformer are made up of magnetic core, bobbin and coiling group coil usually, and magnetic core is provided with ring wall and coiling group coil and bobbin is surrounded, to reduce leakage field and to improve shielding properties; In inductor or transformer manufacturing process, usually need to carry out dipping lacquer process to it, namely at winding coil outer wrapping insulating varnish to protect coil, and contribute to whole product after insulating varnish solidification and to bond together increase mechanical strength.In prior art, insulating varnish penetrates in inductor or transformer by the window on magnetic core ring wall, and be stranded wire because coiled wire-wound coil is normally used, such dipping lacquer mode insulating varnish not easily evenly penetrates into coil internal layer and between bobbin and magnetic core, portion inner layer coil can be caused to lack insulating varnish parcel and affect insulation effect, and, because insulating varnish infiltrates not in place, magnetic core, gap is still there is between the parts such as bobbin and coiling group coil, can cause producing low-frequency vibration noise when inductor or transformer work, send noise or utter long and high-pitched sounds.
On the other hand, the heat produced in inductor or transformer work is also not enough to reach good radiating effect by means of only the window that magnetic core ring wall is offered, especially away from inner coil and the magnetic core center pillar of window end.If inductor or transformer run for a long time at relatively high temperatures, the insulating barrier of winding coil can be caused aging and brittle, easily cause coiling group coil turn-to-turn short circuit, time serious, even burn coiling group coil; Meanwhile, the temperature rise of inductor or transformer is too high also can cause magnetic saturation, same situation of easily burning, and affects product useful life.
To sum up, how improving insulation property and the vibrating noise of inductor or transformer, improve its heat dispersion simultaneously, is numerous practitioners problem in the urgent need to address.
Content of the present invention
In order to overcome the deficiencies in the prior art, the invention provides the modified node method of a kind of magnetic core and bobbin.
The technical solution adopted for the present invention to solve the technical problems is:
The modified node method of a kind of magnetic core and bobbin, comprise a pair magnetic core, bobbin and coiling group coil, described coiling group coil winding is in the wire casing of described bobbin, the magnetic core center pillar of described a pair magnetic core aligns cover and loads in the centre bore of described bobbin, described magnetic core is provided with ring wall and described coiling group coil and bobbin is surrounded, described magnetic core ring wall is provided with window, described bobbin has pole foot support described window place is protruding, in described a pair magnetic core, the inner bottom surface of any one or two is provided with flow-guiding radiation groove, described window is led in described flow-guiding radiation groove one end, it is inner that the other end leads to described magnetic core, the clamping plate of any one or both ends of described bobbin offer notch with described flow-guiding radiation groove corresponding position.
One end that described flow-guiding radiation groove leads to described magnetic core inside extends to described magnetic core center pillar.
The notch that described bobbin clamping plate are offered extends to the centre bore hole wall of described bobbin.
Described notch end face is provided with locating convex block, and described projection snaps in described flow-guiding radiation groove and described magnetic core and described bobbin located.
The invention has the beneficial effects as follows: the present invention's inner bottom surface of any one or two in a pair magnetic core is provided with flow-guiding radiation groove, window is led in flow-guiding radiation groove one end, the other end extends to magnetic core inside, clamping plate and the flow-guiding radiation groove corresponding position of any one or both ends of bobbin offer notch, insulating varnish not only can penetrate in inductor or transformer by each window, but also coiling group coil internal layer can be infiltrated by the notch of flow-guiding radiation groove and bobbin and between bobbin and magnetic core, make coil internal layer can realize simultaneously wrap insulate paint equably with outer, thus strengthen the insulating capacity of coiling group coil, maximum protective effect is played to enamel-cover layer, prevent winding interturn short-circuit, and insulating varnish is evenly fully filled in the gap of the parts such as magnetic core, bobbin and coiling group coil, be conducive to insulating varnish after baking-curing, the relative position of fixing each part, send noise or utter long and high-pitched sounds when preventing vibrating noise and work, and contributing to the mechanical strength strengthening whole product.On the other hand, lead to flow-guiding radiation groove and the notch of magnetic core inside, offered new heat radiation channel, be convenient to outwards dispel the heat away from the inner coil of window end and magnetic core center pillar, improve the heat radiation of inductor or inside transformer, be conducive to the useful life ensureing product further.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present invention;
Fig. 2 is that entirety of the present invention is in conjunction with schematic diagram;
Fig. 3 is cross sectional representation of the present invention;
Fig. 4 is the A-A cutaway view of Fig. 3.
Embodiment
With reference to Fig. 1, Fig. 2, the modified node method of a kind of magnetic core and bobbin, comprise a pair magnetic core 1, bobbin 2 and coiling group coil 3, coiling group coil 3 is wrapped in the wire casing 24 of bobbin 2, the magnetic core center pillar 13 of a pair magnetic core 1 aligns cover and loads in the centre bore 25 of bobbin 2, magnetic core 1 is provided with ring wall 14 and coiling group coil 3 and bobbin 2 is surrounded, magnetic core ring wall 14 is provided with window 11, bobbin 2 has pole foot support 23 window 11 place is protruding, in a pair magnetic core 1, the inner bottom surface of any one or two is provided with flow-guiding radiation groove 12, window 11 is led in flow-guiding radiation groove 12 one end, it is inner that the other end leads to magnetic core 1, the clamping plate 26 of any one or both ends of bobbin 2 offer notch 21 with flow-guiding radiation groove 12 corresponding position.
Inductor of the present invention or transformer are after completing assembling, need whole product be immersed in insulating varnish, insulating varnish is except respectively holding window 11 to infiltrate inductor or inside transformer from magnetic core 1, coiling group coil 3 internal layer can also be infiltrated by flow-guiding radiation groove 12 and notch 21, the coil internal layer that stranded wire is formed infiltrates insulating varnish with outer can realization simultaneously equably, strengthen the insulating capacity of coiling group coil 3, maximum protective effect is played to enamel-cover layer, prevent winding interturn short-circuit, and flow-guiding radiation groove 12 and notch 21 make insulating varnish can more easily penetrate between magnetic core 1 and bobbin 2, and be uniformly filled in magnetic core 1, in the gap of the parts such as bobbin 2 and coiling group coil 3, be conducive to insulating varnish after baking-curing, whole product is bonded together formed combine firmly overall, prevent from each part from mutually moving when producing low-frequency vibration noise and work send noise or utter long and high-pitched sounds, improve the mechanical strength of product simultaneously.On the other hand, lead to flow-guiding radiation groove 23 and the notch 21 of magnetic core inside, offer new heat radiation channel, be convenient to outwards dispel the heat away from the inner coil of window end and magnetic core center pillar 13, prevent inductor or inside transformer temperature too high, the insulating barrier of coiling group coil 3 is aging and brittle, cause coil 3 turn-to-turn short circuit of coiling group or burn, and can prevent inductor or transformer because of temperature rise too high, there is magnetic saturation and cause the situation of burning, being conducive to the useful life extending product.
As the preferred embodiments of the present invention, with reference to Fig. 3, Fig. 4, one end that flow-guiding radiation groove 12 leads to magnetic core inside extends to magnetic core center pillar 13, and the notch 21 on clamping plate 26 extends to centre bore 25 hole wall of bobbin 2; Said structure makes insulating varnish can directly penetrate between magnetic core center pillar 13 and bobbin centre bore 25, and be uniformly filled in the gap of the parts such as magnetic core 1, bobbin 2 and coiling group coil 3, ensure the infiltration effect of insulating varnish, after making solidification, whole product is bonding tightr, improve vibrating noise, insulation property are more reliable, and make the internal layer of coiling group coil 3 and magnetic core center pillar 13 more directly outwards dispel the heat, whole product reaches better radiating effect simultaneously.
In order to meet the convenience of product each parts assembling and conforming requirement, notch 21 end face is provided with locating convex block 22, projection 22 snaps in flow-guiding radiation groove 12 and magnetic core 1 and bobbin 2 is located, when bobbin 2 is installed to magnetic core 1, notch projection 22 aligns flow-guiding radiation groove 12 and snaps in, and does not need to adjust position again.
The present invention, by simple architecture advances cleverly, effectively can improve insulation property and the vibrating noise of inductor or transformer, improve heat dispersion simultaneously, can be widely used among various inductor or transformer.
Claims (4)
1. the modified node method of a magnetic core and bobbin, comprise a pair magnetic core (1), bobbin (2) and coiling group coil (3), described coiling group coil (3) is wrapped in the wire casing (24) of described bobbin (2), the magnetic core center pillar (13) of described a pair magnetic core (1) aligns cover and loads in the centre bore (25) of described bobbin (2), described magnetic core (1) is provided with ring wall (14) and described coiling group coil (3) and bobbin (2) is surrounded, described magnetic core ring wall (14) is provided with window (11), described bobbin (2) is protruding at described window (11) place pole foot support (23), it is characterized in that: in described a pair magnetic core (1), the inner bottom surface of any one or two is provided with flow-guiding radiation groove (12), described window (11) is led in described flow-guiding radiation groove (12) one end, it is inner that the other end leads to described magnetic core (1), the clamping plate (26) of any one or both ends of described bobbin (2) are upper offers notch (21) with described flow-guiding radiation groove (12) corresponding position.
2. modified node method according to claim 1, is characterized in that: one end that described flow-guiding radiation groove (12) leads to described magnetic core (1) inner extends to described magnetic core center pillar (13).
3. modified node method according to claim 1 and 2, is characterized in that: the notch (21) that the clamping plate (26) of described bobbin are offered extends to centre bore (25) hole wall of described bobbin (2).
4. modified node method according to claim 1 and 2, it is characterized in that: described notch (21) end face is provided with locating convex block (22), described projection (22) snaps in described flow-guiding radiation groove (12) and described magnetic core (1) and described bobbin (2) is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428305.2A CN104505223B (en) | 2014-08-27 | 2014-08-27 | A kind of improved structure of magnetic core and bobbin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428305.2A CN104505223B (en) | 2014-08-27 | 2014-08-27 | A kind of improved structure of magnetic core and bobbin |
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| Publication Number | Publication Date |
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| CN104505223A true CN104505223A (en) | 2015-04-08 |
| CN104505223B CN104505223B (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410428305.2A Active CN104505223B (en) | 2014-08-27 | 2014-08-27 | A kind of improved structure of magnetic core and bobbin |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917313A (en) * | 2015-06-30 | 2015-09-16 | 湖州南洋电机有限公司 | Motor skeleton preventing wire breakage |
| US20210098179A1 (en) * | 2019-10-01 | 2021-04-01 | Tdk Electronics Ag | Core Component |
| CN114050026A (en) * | 2021-11-30 | 2022-02-15 | 杭州云电科技能源有限公司 | Magnetic assembly, manufacturing method thereof, power module and switching power supply |
| CN114937549A (en) * | 2022-05-23 | 2022-08-23 | 江苏英飞源智慧能源有限公司 | Common mode inductor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7061358B1 (en) * | 2005-09-12 | 2006-06-13 | Sen-Tai Yang | Structure of inductance core and wire frame |
| US20070075812A1 (en) * | 2005-09-30 | 2007-04-05 | Leader Electronics, Inc. | Transformer |
| CN101699584A (en) * | 2009-10-27 | 2010-04-28 | 鞠万金 | electronic transformer |
| CN201829330U (en) * | 2010-11-01 | 2011-05-11 | 江苏利通电子有限公司 | Combined super-thin transformer applied to LED |
| CN202996517U (en) * | 2012-12-24 | 2013-06-12 | 海宁凌通光伏科技有限公司 | Special-shaped magnetic core of transformer |
| CN204088003U (en) * | 2014-08-27 | 2015-01-07 | 江门市尚品科技研发电子有限公司 | The modified node method of a kind of magnetic core and bobbin |
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2014
- 2014-08-27 CN CN201410428305.2A patent/CN104505223B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061358B1 (en) * | 2005-09-12 | 2006-06-13 | Sen-Tai Yang | Structure of inductance core and wire frame |
| US20070075812A1 (en) * | 2005-09-30 | 2007-04-05 | Leader Electronics, Inc. | Transformer |
| CN101699584A (en) * | 2009-10-27 | 2010-04-28 | 鞠万金 | electronic transformer |
| CN201829330U (en) * | 2010-11-01 | 2011-05-11 | 江苏利通电子有限公司 | Combined super-thin transformer applied to LED |
| CN202996517U (en) * | 2012-12-24 | 2013-06-12 | 海宁凌通光伏科技有限公司 | Special-shaped magnetic core of transformer |
| CN204088003U (en) * | 2014-08-27 | 2015-01-07 | 江门市尚品科技研发电子有限公司 | The modified node method of a kind of magnetic core and bobbin |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917313A (en) * | 2015-06-30 | 2015-09-16 | 湖州南洋电机有限公司 | Motor skeleton preventing wire breakage |
| US20210098179A1 (en) * | 2019-10-01 | 2021-04-01 | Tdk Electronics Ag | Core Component |
| US11705266B2 (en) * | 2019-10-01 | 2023-07-18 | Tdk Electronics Ag | Core component |
| CN114050026A (en) * | 2021-11-30 | 2022-02-15 | 杭州云电科技能源有限公司 | Magnetic assembly, manufacturing method thereof, power module and switching power supply |
| CN114937549A (en) * | 2022-05-23 | 2022-08-23 | 江苏英飞源智慧能源有限公司 | Common mode inductor |
| CN114937549B (en) * | 2022-05-23 | 2024-04-23 | 江苏英飞源智慧能源有限公司 | Common mode inductance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104505223B (en) | 2017-06-20 |
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