CN200969273Y

CN200969273Y - Winding frame and transformer

Info

Publication number: CN200969273Y
Application number: CN 200620112264
Authority: CN
Inventors: 陈文生; 林俊宏
Original assignee: Lite On Technology Corp
Current assignee: Lite On Technology Corp
Priority date: 2006-05-24
Filing date: 2006-05-24
Publication date: 2007-10-31
Anticipated expiration: 2016-05-24

Abstract

The utility model provides a winding frame of transformer, including a coil groove and an extension frame. The coil groove is rounded with metal coils, the extension frame is adhered on the coil groove. The extension frame is provided with a concave hole and an inserting sheath, so the extension frame can be connected with the winding frame of another transformer. The utility model also provides a transformer, comprising a winding frame and an iron core set, the winding frame includes a coil groove for winding metal coils and an extension frame adhered on the coil groove, the extension frame is provided with a concave hole and an inserting sheath for connecting the concave hole of another winding frame; the iron core of the iron core set partly runs through the penetration hole of the coil groove. whatever type the iron core set of transformer is, transformers can be easily combined through the winding frame of the utility model, the number of lamps simultaneously dirven by one transformer will increase through the arrangement mode of the iron core set and the type of the used iron core, which can reduce the production costs of LCD.

Description

Drum stand and transformer

Technical field

The utility model relates to a kind of drum stand, particularly relate to a kind of can with the combined drum stand of other drum stand.

Background technology

Low priceization and high-qualityization along with LCD, LCD be widely used in mobile computer, personal digital assistant (personal digital assistant, PDA), on the information products such as mobile phone, monitor and flat-surface television.Because LCD is a kind of passive luminous flat-panel screens, therefore in the LCD of non-self-emitting light source, need to use backlight module (backlightmodule) that light source is provided.

Light-source generation device in the backlight module is generally cathode fluorescent tube (cold cathodefluorescent lamp, CCFL), external-electrode fluorescent lamp pipe (external electrode fluorescent lamp, EEFL), or light-emitting diode (light emitted diode, LED).According to the light-source generation device position, backlight module can be divided into two kinds: light source produces straight-down negative (directlighting type) backlight module under display floater, and light source is near the side-light type the display floater side (edgelighting type) backlight module.Direct type backlight module with light-source generation device be located at display floater under, therefore can be applicable to the display floater of higher brightness demand or large-size, for example computer monitor and flat television etc.Side light type back light module is located at the side of display floater with light-source generation device, so can dwindle the volume and the manufacturing cost of LCD, generally is applied to small-sized electric equipment products.

Because large-sized LCD adopts the multi-lamp system of straight-down negative, therefore need a plurality of transformers to drive a plurality of fluorescent tubes.See also Fig. 1; Fig. 1 is the schematic diagram of transformer 1 in the prior art.Transformer 1 comprises 10 and two E sections cores of a drum stand (coil frame) (E-shape core) 11,12.Drum stand 10 comprises an elementary ring recess (primary sub-coil-frame) 14 and level ring recess (secondarysub-coil-frame) 13, wire coil (metal coil) is wound in elementary ring recess 14 and secondary ring recess 13, to form primary coil (primary coil) and secondary coil (secondary coil) respectively.When electric current was provided in primary coil 14, the magnetic circuit that electromagnetic induction produced can be by the contact of two E sections cores 11,12, to form closed magnetic path.But the transformer 1 of Fig. 1 can only drive a fluorescent tube, if when being applied to multi-lamp system, the number of transformer need increase thereupon, causes the volume of LCD to become big, and cost also increases relatively.

See also Fig. 2; Fig. 2 is the schematic diagram of transformer 2 in the prior art.Transformer 2 comprises a drum stand 20 and two E sections cores 21,22.Drum stand 10 comprises an elementary ring recess 24 and two

secondary ring recess

23,25, and wire coil is wound in elementary ring recess 24 and

secondary ring recess

23,25, to form a primary coil and twice level coils respectively.Though the transformer 2 of Fig. 2 can drive two fluorescent tubes simultaneously, reduced the volume size of using transformer 1 among two Fig. 1, extendibility still is subject to the shape of iron core, and therefore deficiency is arranged on using in fact.

The utility model content

The purpose of this utility model be to provide a kind of can with the combined drum stand of other drum stand, to address the above problem.

The purpose of this utility model be achieved in that promptly provide a kind of can with the combined drum stand of other drum stand, comprise a ring recess, be used for twining wire coil, and an Extension support, be attached to this ring recess.This Extension support is provided with a pothole, and a hosel, is used for being connected with the pothole of another drum stand.

The utility model also provides a kind of transformer, comprising: a drum stand, and this drum stand comprises: one is used for twining the ring recess of wire coil; And an Extension support, being attached to this ring recess, this Extension support is provided with a pothole and a hosel, is used for being connected with the pothole of another drum stand; And an iron core group, its part iron core is through the through hole of this ring recess.

Advantage of the present utility model is, no matter which type of the employed iron core combination of transformer is, all can use drum stand of the present utility model, with easily that transformer is combined, perhaps pass through the arrangement mode and the employed iron core of the utility model iron core group, expand the fluorescent tube number that transformer can drive simultaneously, reduce the cost of manufacture of LCD thus.

Description of drawings

Fig. 1 and Fig. 2 are the schematic diagram of transformer in the prior art;

Fig. 3 is the schematic diagram of drum stand of the present utility model;

Fig. 4 is the schematic diagram of the utility model transformer 4;

Fig. 5 is the schematic diagram of iron core group among Fig. 4;

Fig. 6 and Fig. 7 are respectively the schematic diagram of the E sections core of different embodiment among Fig. 4;

Fig. 8 is for expanding the schematic diagram of transformer among Fig. 4;

Fig. 9 is the exploded view of transformer among Fig. 4.

The main element symbol description:

30 Extension supports, 31 metal pins

34 hosels, 36 potholes

40 iron core group 41 an I sections core

42 the 2nd I sections cores 43 the 3rd I sections core

54 housings, 441 first sub-iron cores

442 second sub-iron cores

32,50 ring recess

443,463 the 3rd sub-iron cores

3,10,20 drum stands

14,24,52 elementary ring recess

1,2,4,8 transformers

13,23,25,51 level ring recess

11,12,21,22,44,46 E sections cores

Embodiment

See also Fig. 3; Fig. 3 is the schematic diagram of drum stand 3 of the present utility model.Drum stand 3 comprises a ring recess (sub-coil-frame) 32 and an Extension support (extended frame) 30.Ring recess 32 can comprise elementary ring recess and secondary ring recess, is used for twining wire coil, and to form primary coil and secondary coil, drum stand 3 also comprises metal pin 31, is coupled to wire coil, and the number of elementary ring recess and secondary ring recess can design according to using.Therefore Extension support 30 is attached to ring recess 32, and Extension support 30 is provided with a pothole (hole) 36 and a hosel (protrusion) 34, and two drum stands 3 can insert in the potholes 36 and combined by hosel 34.

Drum stand 3 of the present utility model can provide the another kind of method that expands transformer, adds composition element on the Extension support 30 of drum stand 3, as hosel among Fig. 3 34 and pothole 36, just combined transformer easily, to improve extendibility.The shape of the composition element on the Extension support 30 is not limited to the hosel 34 and pothole 36 among Fig. 3, and other any composition element that reaches combination function also is a category of the present utility model.

See also Fig. 4; Fig. 4 is the schematic diagram of the utility model transformer 4.Transformer 4 comprises the drum stand 3 of Fig. 3, in this embodiment, drum stand 3 comprises two groups of ring recess 50, every group of ring recess 50 comprises an elementary ring recess 52 and two secondary ring recess 51, and elementary ring recess 52 can comprise a plurality of pilot trench with secondary ring recess 51, the design of pilot trench has high voltage bearing effect, and the stray capacitance that reduces winding department.In addition, wire coil is wound in elementary ring recess 52 and secondary ring recess 51, to form primary coil and secondary coil, in this embodiment, transformer 4 comprises two coiling groups, and each coiling group comprises a primary coil and two level coils.

Transformer 4 comprises an iron core group 40 in addition, sees also Fig. 5; Fig. 5 is the schematic diagram of iron core group 40 among Fig. 4.Included iron core and each the iron core arrangement mode of iron core group 40 is as follows: one the one I sections core 41 is arranged between two groups of ring recess 50 of drum stand 3, and perpendicular to the through hole of drum stand 3; 2 the 2nd I sections cores 42 are arranged in the through hole of drum stand 3, and an end of 2 the 2nd I sections cores 42 contacts with an I sections core 41; 4 the 3rd I sections cores 43 are arranged at the outside of two groups of ring recess 50 of drum stand 3 respectively, and contact with an I sections core 41; Two E sections cores 44 are arranged at two ends of drum stand 3 respectively, and contact with 2 the 2nd I

sections cores

42,4 the 3rd I sections cores 43, each E sections core 44 comprise one first sub-iron core 441,2 second sub-iron cores 442 and one the 3rd sub-iron core 443, the three sub-iron cores 443 perpendicular to the first sub-iron core 441, be parallel to 2 second sub-iron cores 442 and between 2 second sub-iron cores 442.

Please consult Fig. 4 again, when electric current was provided in primary coil, the magnetic circuit that electromagnetic induction produced can be by the contact of each iron core in the iron core group 40, and is to form closed magnetic path, shown in dotted line.

In addition, the width of each iron core among Fig. 5 is as follows with the relation of thickness: the width and the thickness of the width of the second sub-iron core 442 of E sections core 44 and thickness and the 3rd I sections core 43 are identical; The width of the 3rd sub-iron core 443 of E sections core 44 is identical with the width and the thickness of the 2nd I sections core 42 with thickness; The width of the 2nd I sections core 42 must be greater than the width of the 3rd I sections core 43, and the width of the 3rd sub-iron core 443 of E sections core 44 must be greater than the width of the second sub-iron core 442 of E sections core 44, for example about twice is big, this be since the transformer 4 of Fig. 4 under electromagnetic induction, in each ring recess 50, can produce two magnetic loops, shown in the dotted line among Fig. 4, and two magnetic loops all can be by being arranged in the iron core part of drum stand 3 through holes, so the width of the width of the 3rd sub-iron core 443 of E sections core 44 and the 2nd I sections core 42 must broad.

And the thickness of the 3rd sub-iron core 443 of E sections core 44 can be less than or equal to the thickness of the first sub-iron core 441 of E sections core 44.See also Fig. 6 and Fig. 7, Fig. 6 is the schematic diagram of E sections core 44 among Fig. 4, and Fig. 7 is the schematic diagram of another kind of E sections core 46.In the embodiment of Fig. 6, the thickness of the 3rd sub-iron core 443 of E sections core 44 equals the thickness of the first sub-iron core 441 of E sections core 44, in the embodiment of Fig. 7, the thickness of the 3rd sub-iron core 463 of E sections core (un-centered E core) 46 is less than the thickness of the first sub-iron core 441 of E sections core 46.

Based on the arrangement mode and the employed various iron core of the iron core group among Fig. 5 40, transformer 4 of the present utility model is extensible to more groups coiling group, reaching the effect that a transformer can drive a plurality of fluorescent tubes simultaneously, and then reduces the cost of making.See also Fig. 8; Fig. 8 is for expanding the schematic diagram of transformer 4 among Fig. 4.Voltage device 8 comprises three groups of coiling groups, has used two E sections cores 44, two the one I

sections cores

41,4 the 2nd I sections cores 42,8 the 3rd I sections cores 43 altogether, and is isolated by an I sections core 41 between every group of coiling group.Transformer of the present utility model can be followed the extended mode of Fig. 4 and Fig. 8 and reach if will expand the number that can drive fluorescent tube simultaneously.In addition, the utility model transformer 4,8 employed various iron cores comprise the same magnetic material.

See also Fig. 9; Fig. 9 is the exploded view of transformer 4 among Fig. 4.Transformer 4 comprises two housings 54 in addition, is arranged at the outside of two ring recess 50, in order to support the 3rd I sections core 43.The simple program of introducing assembling at first, is ready to drum stand 3, wire coil is wound in elementary ring recess 52, the secondary ring recess 51 of drum stand 3, then, housing 54 is covered two groups of coiling groups respectively, various iron core position is set at last, and uses viscose that each iron core is fixed, promptly finish assembling.

No matter what the employed iron core group of transformer is combined into, all can use the drum stand of the utility model Fig. 3, with easily that transformer is combined.Perhaps, expand the fluorescent tube number that transformer can drive simultaneously, reduce the cost of manufacture of LCD thus by the arrangement mode and the employed iron core of the utility model iron core group.

Claims

1. a drum stand is characterized in that, comprising: one is used for twining the ring recess of wire coil; And an Extension support, being attached to this ring recess, this Extension support is provided with a pothole, and a hosel, is used for being connected with the pothole of another drum stand.

2. drum stand as claimed in claim 1 is characterized in that, this Extension support is provided with a metal pin, is coupled to this wire coil.

3. drum stand as claimed in claim 1 is characterized in that, this ring recess is an elementary ring recess, and this drum stand comprises the level ring recess in addition one time, adjacent to this elementary ring recess.

4. drum stand as claimed in claim 1 is characterized in that, this ring recess is a level ring recess, and this drum stand comprises an elementary ring recess in addition, adjacent to this secondary ring recess.

5. a transformer is characterized in that, this transformer comprises: a drum stand, and this drum stand comprises: one is used for twining the ring recess of wire coil; And an Extension support, being attached to this ring recess, this Extension support is provided with a pothole and a hosel, is used for being connected with the pothole of another drum stand; And an iron core group, its part iron core is through the through hole of this ring recess.

6. transformer as claimed in claim 5 is characterized in that, this Extension support is provided with a metal pin, is coupled to this wire coil.

7. transformer as claimed in claim 5 is characterized in that, this ring recess is an elementary ring recess, and this drum stand comprises the level ring recess in addition one time, adjacent to this elementary ring recess.

8. transformer as claimed in claim 5 is characterized in that, this ring recess is a level ring recess, and this drum stand comprises an elementary ring recess in addition, adjacent to this secondary ring recess.

9. transformer as claimed in claim 5 is characterized in that, this ring recess comprises two groups of ring recess, and every group of ring recess comprises an elementary ring recess and two level ring recess, and each elementary ring recess is arranged between on the same group the secondary ring recess.

10. transformer as claimed in claim 9 is characterized in that, this secondary ring recess comprises a plurality of pilot trench.

11. transformer as claimed in claim 9 is characterized in that, this elementary ring recess comprises a plurality of pilot trench.

12. transformer as claimed in claim 9 is characterized in that, other comprises two coiling groups, and each coiling group comprises a primary coil and two level coils, and each primary coil and each secondary coil are wound in corresponding elementary ring recess and secondary ring recess respectively.

13. transformer as claimed in claim 12 is characterized in that, this iron core comprises: one the one I sections core, be arranged between two groups of ring recess of this drum stand, and perpendicular to the through hole of this drum stand; 2 the 2nd I sections cores are arranged in the through hole of this drum stand, and contact with an I sections core; Two E sections cores, be arranged at two ends of this drum stand respectively, and contact with this 2 the 2nd I sections core, each E sections core comprises one first sub-iron core, 2 second sub-iron cores and one the 3rd sub-iron core, the 3rd sub-iron core perpendicular to this first sub-iron core, be parallel to this 2 second sub-iron core and between this 2 second sub-iron core; And 4 the 3rd I sections cores, be arranged at the outside of two groups of ring recess of this drum stand respectively, and contact with an I sections core with this two E sections core; Wherein when electric current is provided in this primary coil, the magnetic circuit that electromagnetic induction produced can pass through this two E sections core, an I sections core, this 2 the 2nd I sections core and contact with this 4 the 3rd I sections core, to form closed magnetic path.

14. transformer as claimed in claim 13 is characterized in that, other comprises two housings, is arranged at respectively outside this two ring recess, in order to support the 3rd I sections core.

15. transformer as claimed in claim 13 is characterized in that, the width of the second sub-iron core of this E sections core is identical with the width and the thickness of the 3rd I sections core with thickness.

16. transformer as claimed in claim 13 is characterized in that, the width of the 3rd sub-iron core of this E sections core is greater than the width of the second sub-iron core of this E sections core.

17. transformer as claimed in claim 13 is characterized in that, the width of the 3rd sub-iron core of this E sections core is identical with the width and the thickness of the 2nd I sections core with thickness.

18. transformer as claimed in claim 13 is characterized in that, the thickness of the 3rd sub-iron core of this E sections core is less than or equal to the thickness of the first sub-iron core of this E sections core.

19. transformer as claimed in claim 13 is characterized in that, the width of the 2nd I sections core is greater than the width of the 3rd I sections core.

20. transformer as claimed in claim 13 is characterized in that, various iron core comprises the same magnetic material.