CN201117412Y

CN201117412Y - Transformer safe insulation structure

Info

Publication number: CN201117412Y
Application number: CNU2007201959533U
Authority: CN
Inventors: 杨清盛; 吴素华; 余忠哲
Original assignee: Taipei Multipower Electronics Co Ltd
Current assignee: Taipei Multipower Electronics Co Ltd
Priority date: 2007-11-02
Filing date: 2007-11-02
Publication date: 2008-09-17
Anticipated expiration: 2017-11-02

Abstract

The utility model relates to a safe insulating structure of a transformer; the inside of a bed frame is provided with a through channel; the peripheral of the bed frame is subsequently wound with a primary coil and a secondary coil, and a shielding shell covered on the primary and the secondary coils; the shielding shell consists of a main shell and outer shells; after the containing space of the main shell is registered with the bed frame and positioned, the two opposite sockets of the containing space are respectively aligned with the through channel of the bed frame; the inner side iron cores of a plurality of iron cores are subsequently inserted into the sockets and the through channel; the outer side iron cores move towards a locating channel between a baffler and the main shell and are positioned; the two outer shells are respectively covered on the iron cores correspondingly; the baffler and the outer shells are utilized to form the baffling and shielding effect between the iron cores and the primary and the secondary coils. In this way, the safe creepage distance can be increased, so as to prevent the danger of sparking produced by short-circuit because of not enough creepage distance, and electric arc effect produced by mutual sensing.

Description

The safe insulation structure of transformer

Technical field

The utility model relates to a kind of transformer device structure.

Background technology

Under the technology of cyberage leads; employed for a long time crt display; already by membrane transistor LCD (TFT LCD); plasma display panel various flat-panel screens such as (PDP) (FPD) replace; yet membrane transistor LCD (TFT LCD) must use the light and handy fluorescent tube of high efficiency and external form as module backlight; general display pannel (LCD) the fluorescent tube of normal use promptly is to utilize cold-cathode tube (Cold Cathode Fluorescent Lamp; CCFL) next backlight (Back Light) as panel; and cold-cathode tube (CCFL) is to utilize converter (Inverter) circuit to do driving; but, then can adopt high frequency transformer to be driven usually in order to meet the demand of high voltage output.

Secondly, along with electronic product all strides forward towards compact design requirement, also make set iron core and elementary in the high frequency transformer, the distance of secondary coil shortens, so work as display in unlatching, close or during other situations, because have the generation of higher transient voltage, cause easily simultaneously the electric arc effect is arranged between iron core and the coil, or short circuit causes the dangerous situation of arcing, causing high frequency transformer to damage or burn melts, severe patient more, therefore catching fire then, and then the not good misgivings of fail safe have appearred on using, also remote-effects the safety of user's lives and properties.

Therefore, how to solve high frequency transformer and produced electric arc effect or arcing initiation problem of short-circuit and disappearance because of transient voltage, use and improve the fail safe of display pannel when using, be the relevant manufacturer that is engaged in the industry and desire most ardently the direction place of research improvement, and the dealer that remains to be correlated with makes further improvement and the necessity that redesigns.

The utility model people is to collect related data because above-mentioned problem and disappearance, via assessing in many ways and consider, and utilizes the research and development experience for many years of engaging in the industry, and via constantly studying and revising, the beginning is designed the safe insulation structure of this kind transformer.

Summary of the invention

Main purpose of the present utility model is: the safe insulation structure that a kind of transformer is provided, increase safe creepage distance, in order to avoid primary coil, secondary coil by the generation electric arc effect that interacts between pedestal below and the outside iron core that is positioned at the shield shell top, more can utilize being provided with of shell body to be shielded in several iron core base portions, similarly also can increase safe creepage distance relatively, improve the high voltage withstanding property of transformer by this and the fail safe when using.

Secondary objective of the present utility model is: the safe insulation structure that a kind of transformer is provided, effectively avoid dangerous situation because of the short circuit that the causes initiation arcing of the not enough institute of creepage distance, not only can meet the requirement of safety requirements standard authentication (abbreviating safety as), also can prolong the useful life of transformer relatively.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of safe insulation structure of transformer, be to include pedestal, shield shell and several iron cores, and pedestal inside is provided with and places passage, and be wound with primary coil and secondary coil in regular turn in the pedestal periphery, and cover is overlying on the shield shell of primary coil, secondary coil top, and be positioned at shield shell and be provided with several iron cores that can penetrate relatively, it is characterized in that in placing passage internal induction generation magnetic loop:

This shield shell is made of main casing and shell body, its main casing inside is formed with the primary coil that can accommodate pedestal and twine, the accommodation space of secondary coil, and offer and to penetrate socket in placing passage for several iron cores in accommodation space relative inner wall, be away from socket two outer side edges and then be formed with baffler respectively, and between baffler and main casing, be formed with positioning track.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:

1, the outside iron core of above-mentioned several iron cores is in the positioning track that lays respectively between baffler and the main casing, the embeded slot of its two shell body then respectively fit be positioned on the base portion of several iron cores, and can utilize the setting of baffler, shell body, all can intercept respectively and be shielded between outside iron core and primary coil, the secondary coil.

2, in addition, the main casing of this shield shell is overlying on pedestal and backplate surface top for cover, and the inboard iron core of several iron cores laid respectively at placing in the passage of pedestal, make and form the effect that intercepts, covers between several iron cores and primary coil, the secondary coil, can effectively avoid dangerous situation because of the short circuit that the causes initiation arcing of the not enough institute of creepage distance, not only can meet the requirement of safety requirements standard authentication (abbreviating safety as), also can prolong the useful life of transformer relatively.

3, in other words, just can increase safe creepage distance, in order to avoid primary coil, secondary coil to produce the dangerous situation that has electric arc effect or short circuit to cause arcing by interacting between pedestal below and the outside iron core that is positioned at the shield shell top, the fail safe in the time of can improving the high voltage withstanding property of transformer and use by this.

4 moreover, the base portion upper surface and the upper and lower surface of inboard iron core that are positioned at several iron cores all are covered with pad, and utilize pad to reach the function of buffering concussion, with placing between the passage of the inboard iron core that reduces each iron core and pedestal, because of retaining slightly the low frequency oscillation noise that the gap produced, and can avoid interference or influence the user discomfort is arranged.

Description of drawings

Fig. 1 is stereo appearance figure of the present utility model;

Fig. 2 is three-dimensional exploded view of the present utility model;

Fig. 3 is the stereo appearance figure for another visual angle of the utility model;

Fig. 4 is the top plan view before the utility model assembling;

Fig. 5 is the top plan view when assembling for the utility model;

Fig. 6 is the top plan view after the utility model assembling.

Description of reference numerals: 1, pedestal; 11, place passage; 14, base plate; 12, primary coil; 15, terminal group; 13, secondary coil; 2, shield shell; 21, main casing; 221, positioning track; 211, accommodation space; 23, shell body; 212, socket; 231, embeded slot; 22, baffler; 3, iron core; 31, base portion; 33, outside iron core; 32, inboard iron core; 34, pad.

Embodiment

For reaching above-mentioned purpose and structure, technological means that the utility model adopted and effect thereof, drawing now illustrates in detail that with regard to preferred embodiment of the present utility model its step and function are as follows, understand fully in order to do profit.

See also Fig. 1～shown in Figure 3, it is the stereo appearance figure that is respectively stereo appearance figure of the present utility model, three-dimensional exploded view and another visual angle, find out by knowing shown in the figure, the safe insulation structure of the utility model transformer is to include pedestal 1, shield shell 2 and several iron cores 3 to form, wherein:

This pedestal 1 be for the insulation material one-body molded made, and pedestal 1 inside is provided with and places passage 11, and be wound with primary coil 12 and secondary coil 13 in regular turn in pedestal 1 periphery, in addition, pedestal 1 is respectively arranged with base plate 14 in the outside relatively in placing passage 11, and base plate 14 outsides are equipped with the terminal group 15 that can be electric connection respectively with primary coil 12, secondary coil 13.

This shield shell 2 is made of main casing 21 and shell body 23, its main casing 21 inside are formed with accommodation space 211, and offer socket 212 in 211 liang of relative madial walls of accommodation space, be away from the baffler 22 that 212 liang of outer side edges of socket then are formed with vertical configuration respectively, and be formed with positioning track 221 between baffler 22 and main casing 21, it approaches the shell body 23 that 21 liang of socket 212 outsides of main casing are provided with tool embeded slot 231 in addition.

These several iron cores 3 are to be to be oppositely arranged, and its iron core 3 is for to be provided with more than one inboard iron core 32 and outside iron core 33 in base portion 31 1 sides, and each iron core 3 surface can be covered with the pad 34 of tool buffering concussion function.

See also Fig. 4～shown in Figure 6, be to be respectively the preceding top plan view of the utility model assembling, top plan view after top plan view during assembling and the assembling, find out by knowing shown in the figure, by above-mentioned member in when assembling, be that first main casing 21 covers with shield shell 2 are overlying on pedestal 1 top, after its accommodation space 211 just can be a location with pedestal 1 fit, also make simultaneously 211 liang of relative sockets 212 of accommodation space respectively with pedestal 1 place passage 11 contraposition mutually, and be relatively arranged on place, main casing 21 both sides with several iron cores 3, and the inboard iron core 32 that makes each iron core 3 all penetrates in socket 212 in regular turn and places in the passage 11, and allow outside iron core 33 in the positioning track 221 between baffler 22 and the main casing 21, move the location, back, at this moment, the base portion 31 of its each iron core 3, outside iron core 33 just is exposed to main casing 21 outer surfaces, again the corresponding respectively cover of two shell bodies 23 is overlying on several iron cores 3, make the embeded slot 231 of shell body 23 present the state that fit is located, promptly finish the assembling of the utility model integral body for base portion 31 with iron core 3.

And when using, be overlying on pedestal 1 and base plate 14 surfaces for covering respectively by main casing 21, the primary coil 12 that its pedestal 1 periphery is twined, secondary coil 13 all is contained in the accommodation space 211 of main casing 21, and allow the inboard iron core 32 of several iron cores 3 penetrate relatively in pedestal 1 towards the socket 212 of main casing 21 both sides respectively to place in the passage 11, and after the mutual directly contact of each inboard iron core 32 side, again with the primary coil 12 of pedestal 1, secondary coil 13 cooperates several iron core 3 inductions to produce the magnetic loop, just can be by primary coil 12 input voltages, and after the induction through pedestal 1 and several iron cores 3, then producing in secondary coil 13 has high voltage output, in order to supply default display pannel (LCD) required electric weight.

Secondly, because pedestal 1 and primary coil 12, safeguard construction lacks between the secondary coil 13, will cause the creepage distance deficiency, make transient voltage promptly can and produce the electric arc effect through creepage distance, so when elementary coil 12, when secondary coil 13 cooperates several iron core 3 inductions to produce the magnetic loop, just can be overlying on pedestal 1 and base plate 14 surfaces by main casing 21 covers of shield shell 2, and the inboard iron core 32 of several iron cores 3 laid respectively at placing in the passage 11 of pedestal 1, make several iron cores 3 and primary coil 12, form between the secondary coil 13 and intercept, the effect of covering, can effectively avoid dangerous situation because of the short circuit that the causes initiation arcing of the not enough institute of creepage distance, not only can meet the requirement of safety requirements standard authentication (abbreviating safety as), also can prolong the useful life of transformer relatively.

In addition, the outside iron core 33 of these several iron cores 3 is for laying respectively in the positioning track 221 between baffler 22 and the main casing 21,231 of the embeded slots of its two shell body 23 fit respectively are positioned on the base portion 31 of several iron cores 3, and can utilize baffler 22, the setting of shell body 23, all can intercept respectively and be shielded in outside iron core 33 and primary coil 12, between the secondary coil 13, so, just can increase safe creepage distance, in order to avoid primary coil 12, secondary coil 13 is interacted by pedestal 1 below and 33 of outside iron cores being positioned at shield shell 2 tops and produces the purpose of electric arc effect, improves the high voltage withstanding property of transformer by this and the fail safe when using.

On the other hand, when the user according to personal habits or because of the cause of power saving, and display or TV panel (LCD) are carried out lighting tube brightness when adjusting, it is to utilize pulse bandwidth adjuster (PWM) to adjust lamp current, to reach the effect that brightness is adjusted, and when transformer is in the low frequency state, because the inboard iron core 32 of several iron cores 3 and pedestal 1 place the gap that retains between the passage 11 slightly, and cause the low frequency oscillation noise to produce easily, so be positioned on base portion 31 upper surfaces and inboard iron core 32 of each iron core 3, the lower surface place all is covered with pad 34, and utilize pad 34 to reach the function of buffering concussion, to reduce several iron cores 3, the low frequency oscillation noise that inboard iron core 32 is produced, and can avoid interference or influence the user discomfort is arranged.

Moreover above-mentioned shell body 23 indents are formed with embeded slot 231, and its embeded slot 231 is the size setting that can meet the base portion 31 of several iron cores 3, and present fit location with base portion 31; And several iron cores 3 can be the iron core 3 of U type, E type, I type collocation C type or other tool different types and are oppositely arranged, and each iron core 3 also can be provided with more than one inboard iron core 32 and outside iron core 33 in base portion 31 1 sides, iron core 3 can be penetrated in the placing in the passage 11 of pedestal 1, and induction produce and has the effectiveness of magnetic circuit loop to get final product; Again, the pad 34 that several iron core 3 surfaces are pasted can be insulating trip, silica gel, the insulation material of rubber or the soft elastic construction of other tools, be only to make pad 34 can have buffering concussion function, and can effectively reduce each iron core 3, inboard iron core 32 and pedestal 1 place between the passage 11 noise because of low frequency oscillation produced, its pad 34 also can utilize sticker or adhesive tape in addition, the then thing of tools such as resin adhesion effect is covered on the surface of several iron cores 3 and inboard iron core 32 thereof, form certain adhesion effect, so above-mentioned detailed description is at a kind of preferable possible embodiments explanation of the utility model, only this embodiment is not in order to limit claim of the present utility model, all other do not break away from the equalization of being finished under the skill spirit that the utility model discloses to be changed and modifies change, all should be contained in the claim that the utility model contains.

Be with, the safe insulation structure of the utility model transformer, for the key that can improve located by prior art is:

1, the outside iron core 33 of above-mentioned several iron cores 3 is for laying respectively in the positioning track 221 between baffler 22 and the main casing 21,231 of the embeded slots of its two shell body 23 fit respectively are positioned on the base portion 31 of several iron cores 3, and can utilize the setting of baffler 22, shell body 23, all can intercept respectively and be shielded between outside iron core 33 and primary coil 12, the secondary coil 13.

2, in addition, the main casing 21 of this shield shell 2 is overlying on pedestal 1 and base plate 14 surfaces for cover, and the inboard iron core 32 of several iron cores 3 laid respectively at placing in the passage 11 of pedestal 1, make and form the effect that intercepts, covers between several iron cores 3 and primary coil 12, the secondary coil 13, can effectively avoid dangerous situation because of the short circuit that the causes initiation arcing of the not enough institute of creepage distance, not only can meet the requirement of safety requirements standard authentication (abbreviating safety as), also can prolong the useful life of transformer relatively.

3, in other words, just can increase safe creepage distance, produce the dangerous situation that has electric arc effect or short circuit to cause arcing in order to avoid primary coil 12, secondary coil 13 to interact, can improve the high voltage withstanding property of transformer by this and the fail safe when using by pedestal 1 below and 33 of outside iron cores being positioned at shield shell 2 tops.

4 moreover, base portion 31 upper surfaces and the inboard iron core 32 upper and lower surfaces that are positioned at several iron cores 3 all are covered with pad 34, and utilize pad 34 to reach the function of buffering concussion, with placing between the passage 11 of the inboard iron core 32 that reduces each iron core 3 and pedestal 1, because of retaining slightly the low frequency oscillation noise that the gap produced, and can avoid interference or influence the user discomfort is arranged.

Yet, the above only is preferred embodiment of the present utility model, from not limiting to claim of the present utility model with this, therefore use the simple and easy modification of doing and the equivalent structure of the utility model specification and graphic content to change, must in like manner be contained in the claim that the utility model contains, close and give Chen Ming.

Claims

1, a kind of safe insulation structure of transformer, be to include pedestal, shield shell and several iron cores, and pedestal inside is provided with and places passage, and be wound with primary coil and secondary coil in regular turn in the pedestal periphery, and cover is overlying on the shield shell of primary coil, secondary coil top, and be positioned at shield shell and be provided with several iron cores that can penetrate relatively, it is characterized in that in placing passage internal induction generation magnetic loop:

2, the safe insulation structure of transformer according to claim 1, it is characterized in that: these several iron cores are to be to be oppositely arranged, its iron core can penetrate more than one in socket and the inboard iron core that places in the passage in regular turn for being provided with in base portion one side, and the outside iron core that is arranged in positioning track, be provided with the shell body that can corresponding cover be overlying on several iron cores approaching two socket outsides.

3, the safe insulation structure of transformer according to claim 2 is characterized in that: this shell body indent is formed with embeded slot, and embeded slot is meeting the size setting of several iron core base portions, and locatees with the base portion fit.

4, the safe insulation structure of transformer according to claim 2, it is characterized in that: these several iron cores are that U type, E type or I type collocation C type are oppositely arranged, and be covered with the pad of tool buffering concussion function in each iron core surface, and pad is insulating trip, silica gel or rubber.

5, the safe insulation structure of transformer according to claim 2 is characterized in that: these several iron cores utilize sticker or adhesive tape, resin to be covered with the pad of tool buffering concussion function in base portion upper surface and the upper and lower surface of inboard iron core.