CN1684208A - High voltage transformer - Google Patents
High voltage transformer Download PDFInfo
- Publication number
- CN1684208A CN1684208A CNA2005100649357A CN200510064935A CN1684208A CN 1684208 A CN1684208 A CN 1684208A CN A2005100649357 A CNA2005100649357 A CN A2005100649357A CN 200510064935 A CN200510064935 A CN 200510064935A CN 1684208 A CN1684208 A CN 1684208A
- Authority
- CN
- China
- Prior art keywords
- around
- axial region
- diameter
- inclined plane
- tension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/326—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures specifically adapted for discharge lamp ballasts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
- Inverter Devices (AREA)
Abstract
The invention reduces the height of a high voltage transformer while preventing the generation of corona discharge between a primary side wire winding and a secondary side wire winding which are wound around a primary winding core and a secondary winding core, respectively, which are laminated and arranged on an insulating spool interposing a barrier.The primary winding core 54 arranged on the upper step of the spool 50 is constituted in such a manner that the diameter is not changed from an upper end 54a which is positioned at a far side from the secondary winding core 56 to a predetermined midrange 54b, and gradually increased from the midrange 54b to a lower end 54c. As a result, the height of the spool 50 can be reduced while fully securing an isolation voltage between the high voltage side of the secondary side wire winding and the primary side wire winding and preventing the generation of corona discharge.
Description
Technical field
The present invention relates to be installed to the high-tension transformer on the circuit substrate of various e-machines.Especially have with respect to circuit substrate be used to twine with vertical direction laminated configuration elementary winding tubular the 1st around axial region be used to twine the 2nd high-tension transformer of the tubular of secondary winding around frame around axial region.
Background technology
In the past, as this high-tension transformer, the conversion transformer in a kind of DC/AC of being used in change-over circuit is arranged, it can make the many backlights that are used for the various LCDs of notebook computer etc. discharge simultaneously, light with cold cathode discharge tube (hereinafter referred to as CCFL).
In this conversion transformer, with the alternating voltage that is applied to about the 12V of elementary winding, export after in secondary winding, being transformed into the high voltage about 1600～1800V, therefore, between elementary winding and secondary winding corona discharge might take place.In order to prevent this discharge, usually adopt insulating properties around the structure of frame make tabular wall part between the 1st around axial region and the 2nd between axial region, but, the corona discharge of wall part there be (discharge of edge face) so might be situated between because tabular wall part is difficult to guarantee the enough dielectric voltage withstands between elementary winding and secondary winding.
Recently, as the technology that will address the above problem, patent documentation 1 (spy opens bulletin 2000-124043 number) discloses a kind of conversion transformer.It by use the 1st around axial region and the 2nd between axial region, dispose do not have a wound wire illusory around groove around frame, thereby improve the generation that dielectric voltage withstand between elementary winding and the secondary winding prevents corona discharge.In addition, also has a kind of technique known: by making the 1st diameter around the outer peripheral face of axial region, all big around the diameter of the outer peripheral face of axial region on axial whole than the 2nd, thus the high-pressure side (generally being positioned at the inboard around coil diameter) of improving secondary winding prevents the generation that the edge face discharges with the dielectric voltage withstand between the elementary winding.
But, in above-mentioned patent documentation 1 disclosed technology, thus above-mentioned the sort of illusory because of being provided with around the obviously increasing of height (axial length) of groove around frame, cause low dwarfing difficulty around frame and high-tension transformer.
In addition, if make the 1st diameter around the outer peripheral face of axial region, on axial whole all than the 2nd when the diameter of the outer peripheral face of axial region is big, the winding zone of the elementary winding of amount that respective diameters increases can be to the 1st outer circumferential side dislocation around axial region, so becoming greatly around coil diameter of unavoidable elementary winding caused the maximization around frame.
Summary of the invention
The present invention carries out in view of the above problems, and its purpose is to prevent the generation of the corona discharge between elementary winding and the secondary winding, provides around frame Miniaturizable and the low high-tension transformer of downgrading.
In order to achieve the above object, high-tension transformer of the present invention is constructed as follows.That is to say, high-tension transformer of the present invention, have by clamp tubular that the wall part laminated configuration is used to twine elementary winding the 1st around axial region and be used to twine secondary winding tubular the 2nd around insulating properties that axial region constituted around frame, it is characterized in that: the described the 1st the close described the 2nd diameter around the end of axial region one side around axial region, greater than the 2nd the described the 1st diameter around the end of axial region one side around axial region.The described the 1st around axial region away from the described the 2nd diameter around the end of axial region one side, less than described near the 2nd diameter around the end of axial region one side.
In the present invention, the described the 1st around axial region, both can increase gradually to close its diameter of a side around axial region one side away from the 2nd from described.Also can from described away from the 2nd around axial region one side near a side, to locate and be changed to same diameter, and increase gradually from this its diameter of allocation.
According to high-tension transformer of the present invention, in insulating properties in frame, the 1st around axial region near the 2nd diameter, greater than the 2nd the described the 1st diameter around the end of axial region one side around axial region around the end of axial region one side.Like this, between the high-pressure side of secondary winding and elementary winding, will be situated between have the 1st around axial region near the 2nd end and wall part around axial region one side.Therefore, both can between axial region, not be provided with of the prior art illusoryly around axial region and the 2nd, can fully guarantee the dielectric voltage withstand between secondary winding high-pressure side and the elementary winding again around groove the 1st.Therefore, both can realize low dwarfing, and can prevent from again between elementary winding and secondary winding, corona discharge to take place around frame and high-tension transformer.
In addition, since the 1st around axial region away from the 2nd diameter around the end of axial region one side, less than near the 2nd diameter around the end of axial region one side, so with make the 1st to compare around axial region greater than the 2nd at its direction of principal axis gamut around the diameter of axial region, the winding zone that can restrain elementary winding is to the 1st outer circumferential side dislocation around axial region.Therefore, can restrain the increase of the coiling diameter of elementary winding, constitute small-sized around frame.
Description of drawings
Fig. 1 is the exploded perspective view that the integral body of the high-tension transformer of the present invention's the 1st example constitutes.
Fig. 2 is the front elevation around frame shown in Fig. 1.
Fig. 3 is the front elevation around frame of the present invention's the 2nd example.
Fig. 4 is the front elevation around frame of the present invention's the 3rd example.
Fig. 5 is formed in the 1st variation around axial region ramp portion.
Embodiment
Below, be elaborated with reference to the example of accompanying drawing to high-tension transformer of the present invention.Fig. 1 is the exploded perspective view that the integral body of the high-tension transformer of the present invention's the 1st example constitutes.In addition, in Fig. 1, show the reference axis that is used to represent direction, in the following description, before the axial forward of the x of this reference axis is made as, after negative sense is made as; The axial forward of y is made as the right side, and negative sense is made as a left side, and the axial forward of z is made as, and negative sense is made as down.
As shown in Figure 1, the high-tension transformer 10 of this example is the conversion transformer that makes 2 CCFL (cold cathode discharge tube) discharge simultaneously, light that is used in the DC/AC change-over circuit.It has set the bobbin of pair of right and left between a pair of up and down magnetic core that is made of the ferrite of soft magnetic material etc. (go up magnetic core 20 and magnetic core 30) down.
Each bobbin 40, by form with insulating properties material (generally being the plastics prepared material) around frame 50 and be configured in this same terminal board 60 that forms by the insulating properties material and constitute around the preceding side lower part of frame 50 and back side lower part.On each terminal board 60, maintain a plurality of terminals (among Fig. 1, only showing the terminal 71～75 of the terminal board 60 that is configured in the front side).
Above-mentioned around frame 50, by laminated configuration along the vertical direction edge shape wall part 52 both sides the 1st around axial region 54 and the 2nd around axial region 56 and be separately positioned on the 1st around the upper end of axial region 54 and the 2nd edge portion 55 and edge portion 57 around the bottom of axial region 56 constitute.Formed the through hole 53 that connects along the vertical direction at its axle center.
The above-mentioned the 1st in axial region 54, in the winding space that forms between above-mentioned edge portion 55 and above-mentioned wall part 52, twine not shown elementary winding, the above-mentioned the 2nd in axial region 56, in the winding space that between above-mentioned wall part 52 and above-mentioned edge portion 57, forms, twine not shown secondary winding.This secondary winding is wound in and makes its high-pressure side be positioned at the 2nd radially inner side around axial region 56, and its on high-tension side end is pricked and formed on the 71a of the bundle portion that connects of one with terminal 71.In addition, the inventive point of this example is the above-mentioned the 1st formation around axial region 54, and detailed content is narrated in the back.
Above-mentioned down magnetic core 30, by with the base plate 32 of not shown circuit substrate subtend, be separately positioned on this base plate 32 both ends, the left and right sides pair of sidewalls portion 34,34 and constitute from the outstanding upward pair of columnar portion 36,36 that is provided with of base plate 32.Above-mentioned respectively in each through hole 53 of frame 50, insert above-mentioned each cylindrical portion 36 make above-mentioned magnetic core 30 down with above-mentioned on magnetic core 10 combinations, thereby form closed magnetic circuit.
Secondly, describe the above-mentioned the 1st formation in detail with reference to Fig. 2 around axial region 54 as the inventive point of this example.Fig. 2 is the front elevation around frame 50 after frame 50 is removed among Fig. 1.
As shown in Figure 2, around the epimere of frame 50 be provided with the 1st around axial region 54, the diameter of the outer peripheral face of its bottom is greater than the 2nd diameter around the outer peripheral face of axial region 56 (being roughly the same diameter in axial gamut), and the diameter of the outer peripheral face of its upper end is less than the diameter of the outer peripheral face of bottom.More particularly, the 1st outer peripheral face around axial region 54, from being positioned at the upper end 54a of a side far away around axial region 56 from the 2nd, downwards with identical diameter arrive fixed centre position 54b, begin diameter to be increased gradually from this centre position 54b then to lower end 54c.
Like this, high-pressure side at the 2nd secondary winding (diagram slightly) that twines around the periphery of axial region 56, and the 1st between the elementary winding (diagram slightly) that the periphery of axial region 54 is twined, just be situated between the 1st bottom and wall part 52 around axial region 54 arranged, thereby, both can between axial region 56, not be provided with of the prior art illusoryly around axial region 54 and the 2nd, can fully guarantee the dielectric voltage withstand between secondary winding high-pressure side and the elementary winding again around groove the 1st.Therefore, both can realize low dwarfing, and can prevent from again between elementary winding and secondary winding, corona discharge to take place around frame 50 and high-tension transformer 10.
In addition, because the 1st around little than the outer peripheral face of its bottom of the outer peripheral face diameter of the upper end of axial region 54, so between edge portion 55 and wall part 52, can fully guarantee the winding zone of elementary winding.Therefore, can restrain the increase of the coiling diameter of elementary winding, constitute small-sized around frame 50 and high-tension transformer 10.
Secondly, with reference to Fig. 3, Fig. 4 other example of the present invention is described.Fig. 3 is the front elevation around frame of the invention process form 2.Fig. 4 is the front elevation around frame of the invention process form 3.
The 2nd example shown in Figure 3 around frame 50A, be with the difference around frame 50 of above-mentioned the 1st example: the 1st around axial region 54 from its upper end 54a begin to increase gradually to its diameter of lower end 54c.
And the 3rd example shown in Figure 4 around frame 50B, be with the difference around frame 50 of above-mentioned the 1st example: the 1st around axial region 54, extend to by 54a from its upper end centre position 54b path epimere portion and constitute from the hypomere portion that middle position 54b extends to the big footpath of lower end 54c, and this hypomere portion is bigger around the diameter of axial region 56 than the 2nd.
Around frame 50A, 50B, can play with around the identical action effect of frame 50, but be provided with comparing of step the 1st around axial region 54 around frame 50B, do not have step around frame 50,50A, have elementary winding and twine and be easy to advantage.
In addition, above-mentioned in frame 50,50A as shown in Figures 2 and 3, the 1st part that increases gradually around the diameter of axial region 54 has formed inclined plane part 54d.The slope of this inclined plane part 54d, roughly certain in the whole zone of its direction of principal axis.But as shown in Figure 5, the slope of inclined plane part 54d is changed.In addition, inclined plane part 54d has been shown among this figure (a) has formed the example of concave shape, and the example of inclined plane part 54d formation convex-shaped has been shown among this figure (b).
More than, just be applied to the conversion transformer example high-tension transformer of the present invention has been described, but the present invention not only can be applicable to conversion transformer, can also be applied to other range transformers.
Claims (9)
1, a kind of high-tension transformer, have the tubular that will be used to twine elementary winding by clamping wall part the 1st around axial region and the 2nd insulating properties that after the axial region laminated configuration, is constituted of tubular that is used to twine secondary winding around frame, it is characterized in that:
The described the 1st the close described the 2nd diameter around the end of axial region one side around axial region, greater than the 2nd the described the 1st diameter around the end of axial region one side around axial region,
The described the 1st around axial region away from the described the 2nd diameter around the end of axial region one side, less than described near the 2nd diameter around the end of axial region one side.
2, high-tension transformer according to claim 1 is characterized in that: the described the 1st around axial region, increases gradually to close its diameter of a side around axial region one side away from the 2nd from described.
3, high-tension transformer according to claim 1 is characterized in that: the described the 1st around axial region, from described away from the 2nd around axial region one side near a side, to locate and be changed to same diameter, and increase gradually from its diameter of this allocation.
4, high-tension transformer according to claim 1 is characterized in that: between a pair of up and down magnetic core, about configuration a pair of by the terminal board and the described bobbin that keep a plurality of terminals around the insulating properties that is configured to.
5, according to claim 2 or 3 described high-tension transformers, it is characterized in that: form inclined plane part in the described the 1st part that increases gradually around the described diameter of axial region, the slope of this inclined plane part is roughly certain around the direction of principal axis gamut of axial region the described the 1st.
6, according to claim 2 or 3 described high-tension transformers, it is characterized in that: form inclined plane part in the described the 1st part that increases gradually around the described diameter of axial region, the slope of this inclined plane part changes by concave shape at the described the 1st direction of principal axis around axial region.
7, according to claim 2 or 3 described high-tension transformers, it is characterized in that: form inclined plane part in the described the 1st part that increases gradually around the described diameter of axial region, the slope of this inclined plane part changes by convex-shaped at the described the 1st direction of principal axis around axial region.
8, high-tension transformer according to claim 4 is characterized in that: form the through hole that above-below direction connects at described axle center around frame, insert the cylindrical portion of described magnetic core in this through hole.
9, according to claim 4 or 8 described high-tension transformers, it is characterized in that: make 2 cold cathode discharge tubes discharge simultaneously, light.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004118127A JP2005303073A (en) | 2004-04-13 | 2004-04-13 | High voltage transformer |
| JP2004118127 | 2004-04-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1684208A true CN1684208A (en) | 2005-10-19 |
| CN100550225C CN100550225C (en) | 2009-10-14 |
Family
ID=35263459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100649357A Expired - Fee Related CN100550225C (en) | 2004-04-13 | 2005-04-12 | High-tension transformer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2005303073A (en) |
| KR (1) | KR100695709B1 (en) |
| CN (1) | CN100550225C (en) |
| TW (1) | TWI265535B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577632A (en) * | 2009-10-21 | 2012-07-11 | 朗姆研究公司 | RF isolation for power circuitry |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115410804A (en) * | 2015-11-30 | 2022-11-29 | 鹰港科技有限公司 | High-voltage transformer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575842Y2 (en) * | 1977-04-13 | 1982-02-03 | ||
| US4699184A (en) * | 1986-05-15 | 1987-10-13 | Kuhlman Corporation | Apparatus and method for fabricating a high voltage winding for a toroidal transformer |
| JPH0869930A (en) * | 1994-08-29 | 1996-03-12 | Matsushita Electric Works Ltd | Electromagnetic device |
| JPH08107026A (en) * | 1994-10-03 | 1996-04-23 | R B Controls Kk | Bobbin of ignitor transformer |
| JP2002208522A (en) * | 2001-01-09 | 2002-07-26 | Tdk Corp | Bobbin and transformer |
-
2004
- 2004-04-13 JP JP2004118127A patent/JP2005303073A/en active Pending
-
2005
- 2005-03-21 TW TW094108548A patent/TWI265535B/en not_active IP Right Cessation
- 2005-04-12 CN CNB2005100649357A patent/CN100550225C/en not_active Expired - Fee Related
- 2005-04-13 KR KR1020050030674A patent/KR100695709B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577632A (en) * | 2009-10-21 | 2012-07-11 | 朗姆研究公司 | RF isolation for power circuitry |
| CN102577632B (en) * | 2009-10-21 | 2014-12-03 | 朗姆研究公司 | RF isolation for power circuitry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100550225C (en) | 2009-10-14 |
| KR100695709B1 (en) | 2007-03-15 |
| JP2005303073A (en) | 2005-10-27 |
| KR20060045652A (en) | 2006-05-17 |
| TWI265535B (en) | 2006-11-01 |
| TW200534301A (en) | 2005-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100345227C (en) | High-voltage transformer | |
| US5847518A (en) | High voltage transformer with secondary coil windings on opposing bobbins | |
| US7733208B2 (en) | High voltage pulse type transformer with increased coupling coefficient through primary and secondary winding proximity | |
| CN1790564A (en) | High-voltage transformer | |
| US7116204B2 (en) | Leakage transformer | |
| CN1235243C (en) | High-tension transformer | |
| US6894596B2 (en) | Inverter transformer to light multiple lamps | |
| CN1412792A (en) | Wirewound coil | |
| US20070241853A1 (en) | Transformer | |
| JP2003068540A (en) | Transformer of inverter circuit | |
| CN1337721A (en) | Transformer | |
| CN1210617A (en) | Converter transformer | |
| CN1684208A (en) | High voltage transformer | |
| CN1841584A (en) | Transformer | |
| CN1204575C (en) | Flyback transformer | |
| CN1169170C (en) | Inductor | |
| US20060125591A1 (en) | [high voltage transformer] | |
| CN1577652A (en) | High voltage bobbin of fly-back transformer | |
| CN1249522A (en) | High-voltage transformer | |
| CN1025096C (en) | Flyback transformer | |
| JP2000331850A (en) | High-voltage generating coil | |
| CN2646839Y (en) | High voltage transformer device | |
| CN1099122C (en) | Single body bobbin structure for flyback transformer | |
| CN101042958A (en) | Transformer and iron core set thereof | |
| CN1336674A (en) | Winding frame for transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20130412 |