CN2736900Y - Transformer and multiple lamp tubes driving system - Google Patents
Transformer and multiple lamp tubes driving system Download PDFInfo
- Publication number
- CN2736900Y CN2736900Y CN 200420077128 CN200420077128U CN2736900Y CN 2736900 Y CN2736900 Y CN 2736900Y CN 200420077128 CN200420077128 CN 200420077128 CN 200420077128 U CN200420077128 U CN 200420077128U CN 2736900 Y CN2736900 Y CN 2736900Y
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- magnetic conduction
- conduction core
- extension
- hole
- drum stand
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Abstract
The utility model relates to a transformer and multiple lamp tubes driving system. Wherein, the transformer comprises a first bobbin winder bracket, a second bobbin winder bracket, a third bobbin winder bracket, a first magnetic conductive core, a second magnetic conductive core, a third magnetic conductive core, a fourth magnetic conductive core, a primary side coil, a first secondary side coil, and a second secondary side coil. The first bobbin winder bracket is provided with a first through hole and a second through hole; the second bobbin winder bracket is provided with a third through hole; the third bobbin winder bracket is provided with a fourth through hole. The first magnetic conductive core is provided with a first extending part and a second extending part; the second magnetic conductive core is provided with a third extending part and a fourth extending part; the third magnetic conductive core is provided with a fifth extending part and a sixth extending part; the fourth magnetic conductive core is provided with a seventh extending part and an eighth extending part. Wherein, the second extending part and the sixth extending part are positioned in the first through hole; the third extending part and the seventh extending part are positioned in of the second through hole; the first extending part and the fifth extending part are positioned in the third through hole; the fourth extending part and the eighth extending part are positioned on the inner of the fourth through hole. The first magnetic conductive core and the third magnetic conductive core form a first main magnetic circuit, and the second magnetic conductive core and the fourth magnetic conductive core form a second main magnetic circuit.
Description
Technical field
The utility model relates to a kind of transformer, and particularly relates to a kind of transformer that constitutes the two main magnetic circuits that separate with eight extensions.
Background technology
Along with the arriving of multimedia era, (liquid crystal display, application LCD) will enlarge as the monitor of computer, LCD screen TV etc. LCD gradually.Generally speaking, LCD is used and is lightly reached dynamical lamp-tube driving system as backlight, therefore has thin thickness, the steady and audible characteristics of picture.Multi-lamp-tube driving system in the LCD is mainly by as cold-cathode tube (cold cathodefluorescent lamp, discharge lamp CCFL), and form in order to the transformer that drives cold-cathode tube.
With reference to Figure 1A, Figure 1A is the schematic diagram of the traditional transformer of expression.In Figure 1A, transformer 10 comprises one first drum stand 11a, one second drum stand 11b, one the 3rd drum stand 11c, one first magnetic conduction core 13a, one second magnetic conduction core 13b, one lateral coils 15, one first second siding ring 16a and one second second siding ring 16b.The first drum stand 11a has one first through hole 12a, and the second drum stand 11b has one second through hole 12b, and the 3rd drum stand 11c has a third through-hole 12c.The first magnetic conduction core 13a has one first extension 14a, one second extension 14b and one the 3rd extension 14c, in order to be inserted in respectively among the second through hole 12b, the first through hole 12a and the third through-hole 12c.The second magnetic conduction core 13b has one the 4th extension 14d, one the 5th extension 14e and one the 6th extension 14f, in order to be inserted in respectively among the second through hole 12b, the first through hole 12a and the third through-hole 12c.In addition, the sectional area of the second extension 14b and the 5th extension 14e is all A1, and the sectional area of the first extension 14a, the 3rd extension 14c, the 4th extension 14d and the 6th extension 14f is all A2, and A1 is 2 times of A2.First siding ring 15 curls up in the periphery of the first drum stand 11a, and the first second siding ring 16a curls up in the periphery of the second drum stand 11b, and the second second siding ring 16b curls up in the periphery of the 3rd drum stand 11c.
Shown in Figure 1B, when the first extension 14a, the second extension 14b and the 3rd extension 14c are inserted in respectively among the second through hole 12b, the first through hole 12a and the third through-hole 12c, and when the 3rd extension 14d, the 4th extension 14e and the 5th extension 14f were inserted among the second through hole 12b, the first through hole 12a and the third through-hole 12c respectively, the first magnetic conduction core 13a and the second magnetic conduction core 13b formed one first main magnetic circuit 17a and the one second main magnetic circuit 17b that part overlaps.In the second extension 14b and the complete contraposition of the 4th extension 14e during correct and driving fit, if the magnetic flux that first siding ring 15 is induced on the second extension 14b and the 5th extension 14e is F, then the magnetic flux on the first main magnetic circuit 17a and the second main magnetic circuit 17b will equate, is all F/2.Yet, when the tolerance in the first drum stand 11a, the second drum stand 11b, the 3rd drum stand 11c, the first magnetic conduction core 13a and the second magnetic conduction core 13b generation manufacturing, the second extension 14b and the 4th extension 14e will produce inconsistent phenomenon, the correct and driving fit of contraposition fully.Thus, the magnetic flux on the first main magnetic circuit 17a and the second main magnetic circuit 17b is unequal, causes the unmatched phenomenon of so-called magnetic circuit, has a strong impact on the riding quality of transformer 10.
Summary of the invention
In view of this, the purpose of this utility model is providing a kind of transformer exactly.It breaks away from the yoke of the design of magnetic conduction core traditionally widely with the design of eight extensions formation two main magnetic circuits that separate, and can avoid producing the unmatched phenomenon of magnetic circuit when the magnetic conduction core misplaces, and improve the running quality of transformer.
According to the purpose of this utility model, propose a kind of transformer, comprise one first drum stand, one second drum stand, one the 3rd drum stand, one first magnetic conduction core, one second magnetic conduction core, one the 3rd magnetic conduction core, one the 4th magnetic conduction core, one lateral coils, one first second siding ring and one second second siding rings.First drum stand has one first through hole and one second through hole, and second drum stand has a third through-hole, and the 3rd drum stand has a fourth hole.The first magnetic conduction core has one first extension and one second extension, and the second magnetic conduction core has one the 3rd extension and one the 4th extension.The 3rd magnetic conduction core has one the 5th extension and one the 6th extension, and the 4th magnetic conduction core has one the 7th extension and one the 8th extension.First siding ring curls up in the periphery of first drum stand, and first second siding ring curls up in the periphery of second drum stand, and second second siding ring curls up in the periphery of the 3rd drum stand.Wherein, second extension and the 6th extending part are in first through hole, and the 3rd extension and the 7th extending part are in second through hole.First extension and the 5th extending part are in third through-hole, and the 4th extension and the 8th extending part are in fourth hole.The first magnetic conduction core and the 3rd magnetic conduction core form one first main magnetic circuit, and the second magnetic conduction core and the 4th magnetic conduction core form one second main magnetic circuit.
According to a purpose more of the present utility model, a kind of multi-lamp-tube driving system is proposed, comprise a transformer, one first fluorescent tube and one second fluorescent tube.Transformer comprises one first drum stand, one second drum stand, one the 3rd drum stand, one first magnetic conduction core, one second magnetic conduction core, one the 3rd magnetic conduction core, one the 4th magnetic conduction core, one lateral coils, one first second siding ring and one second second siding rings.First drum stand has one first through hole and one second through hole, and second drum stand has a third through-hole, and the 3rd drum stand has a fourth hole.The first magnetic conduction core has one first extension and one second extension, and the second magnetic conduction core has one the 3rd extension and one the 4th extension.The 3rd magnetic conduction core has one the 5th extension and one the 6th extension, and the 4th magnetic conduction core has one the 7th extension and one the 8th extension.First siding ring curls up in the periphery of first drum stand, and receives one first voltage signal.First second siding ring curls up in the periphery of second drum stand, and exports one second voltage signal.Second second siding ring curls up in the periphery of the 3rd drum stand, and exports a tertiary voltage signal.First fluorescent tube and second fluorescent tube connect first second siding ring and second second siding ring respectively, and are driven by second voltage signal and tertiary voltage signal respectively.Wherein, second extension and the 6th extending part are in first through hole, and the 3rd extension and the 7th extending part are in second through hole.First extension and the 5th extending part are in third through-hole, and the 4th extension and the 8th extending part are in fourth hole.The first magnetic conduction core and the 3rd magnetic conduction core form one first main magnetic circuit, and the second magnetic conduction core and the 4th magnetic conduction core form one second main magnetic circuit.
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below:
Description of drawings
Figure 1A is the schematic diagram of the traditional transformer of expression.
Figure 1B is the schematic diagram of the state of six extensions when constituting two magnetic circuits of expression Figure 1A.
Fig. 2 A is the schematic diagram of expression according to the transformer of embodiment one of the present utility model.
Fig. 2 B is the schematic diagram of the state of eight extensions of presentation graphs 2A when constituting two magnetic circuits.
Fig. 3 is the circuit block diagram of multi-lamp-tube driving system that expression has the transformer of Fig. 2 A.
Fig. 4 is the schematic diagram of expression according to the transformer of embodiment two of the present utility model.
The reference numeral explanation:
10,20,40: transformer
11a, 21a: first drum stand
11b, 21b: second drum stand
11c, 21c: the 3rd drum stand
11a, 22a: first through hole
12b, 22b: second through hole
12c, 22c: third through-hole
13a, 23a: the first magnetic conduction core
13b, 23b: the second magnetic conduction core
14a, 24a: first extension
14b, 24b: second extension
14c, 24c: the 3rd extension
14d, 24d: the 4th extension
14e, 24e: the 5th extension
14f, 24f: the 6th extension
15,25: first siding ring
16a, 26a: first second siding ring
16b, 26b: second second siding ring
17a, 27a: the first main magnetic circuit
17b, 27b: the second main magnetic circuit
22d: fourth hole
23c: the 3rd magnetic conduction core
23d: the 4th magnetic conduction core
24g: the 7th extension
24h: the 8th extension
30: multi-lamp-tube driving system
31: drive circuit
32a: first fluorescent tube
32b: second fluorescent tube
49a: first connecting portion
49b: second connecting portion
Embodiment
Embodiment one
With reference to Fig. 2 A, Fig. 2 A is the schematic diagram of expression according to the transformer of embodiment one of the present utility model.In Fig. 2 A, transformer 20 comprises one first drum stand 21a, one second drum stand 21b, one the 3rd drum stand 21c, one first magnetic conduction core 23a, one second magnetic conduction core 23b, one the 3rd magnetic conduction core 23c, one the 4th magnetic conduction core 23d, one lateral coils 25, one first second siding ring 26a and one second second siding ring 26b.The first drum stand 21a has one first through hole 22a and one second through hole 22b, and the second drum stand 21b has a third through-hole 22c, and the 3rd drum stand 21c has a fourth hole 22d.The first magnetic conduction core 23a has one first extension 24a and one second extension 24b, in order to be inserted in respectively among the third through-hole 22c and the first through hole 22a.The second magnetic conduction core 23b has one the 3rd extension 24c and one the 4th extension 24d, in order to be inserted in respectively among the second through hole 22b and the fourth hole 22d.The 3rd magnetic conduction core 23c has one the 5th extension 24e and one the 6th extension 24f, in order to be inserted in respectively among the third through-hole 22c and the first through hole 22a.The 4th magnetic conduction core 23d has one the 7th extension 24g and one the 8th extension 24h, in order to be inserted in respectively among the second through hole 22b and the fourth hole 22d.First siding ring 25 curls up in the periphery of the first drum stand 21a, and the first second siding ring 26a curls up in the periphery of the second drum stand 21b, and the second second siding ring 26b curls up in the periphery of the 3rd drum stand 21c.In the present embodiment, the first magnetic conduction core 23a, the second magnetic conduction core 23b, the 3rd magnetic conduction core 23c and the 4th magnetic conduction core 23d are U font structures all, and the first second siding ring 26a and the second second siding ring 26b are to curl up respectively in the periphery of the second drum stand 21b and the 3rd drum stand 21c along same mode of curling up direction.
When the second extension 24b and the 6th extension 24f are arranged in the first through hole 22a, and when the first extension 24a and the 5th extension 24e are arranged in third through-hole 22c, the first magnetic conduction core 23a and the 3rd magnetic conduction core 23c form one first main magnetic circuit 27a, shown in Fig. 2 B.When the 3rd extension 24c and the 7th extension 24g are arranged in the second through hole 22b, and when the 4th extension 24d and the 8th extension 24h are arranged in fourth hole 22d, the second magnetic conduction core 23b and the 4th magnetic conduction core 23d form second a main magnetic circuit 27b who separates with the first main magnetic circuit 27a, and for example shown in Fig. 2 B.
Because the sectional area of the first extension 24a, the second extension 24b, the 3rd extension 24c, the 4th extension 24d, the 5th extension 24d, the 6th extension 24e, the 7th extension 24f and the 8th extension 24g equates, be all A3, if the magnetic flux that first siding ring 25 is induced on the second extension 24b, the 3rd extension 24e, the 6th extension 24f and the 7th extension 24g is F, then the magnetic flux on the first main magnetic circuit 27a and the second main magnetic circuit 27b will equate, is all F/2.Thus, can avoid producing the unmatched phenomenon of magnetic circuit, and promote the operational effectiveness of transformer 20 widely.
With reference to Fig. 3, Fig. 3 is the circuit block diagram of multi-lamp-tube driving system that expression has the transformer of Fig. 2 A.In Fig. 3, multi-lamp-tube driving system 30 comprises a transformer 20, one drive circuit 31 and several fluorescent tubes, as one first fluorescent tube 32a and one second fluorescent tube 32b.Transformer 20 makes drive circuit 31 can drive the first fluorescent tube 32a and the second fluorescent tube 32b in order to electrically connect drive circuit 31 and the first fluorescent tube 32a and the second fluorescent tube 32b.In the process that drives the first fluorescent tube 32a and the second fluorescent tube 32b, at first, drive circuit 31 provides one first voltage signal V1 to first siding ring 25.Then, when the first siding ring 25 of transformer 20 receives the first voltage signal V1, transformer 20 orders about the first second siding ring 26a and the second second siding ring 26b and exports one second a voltage signal V2 and a tertiary voltage signal V3 respectively according to the first main magnetic circuit 27a and the second main magnetic circuit 27b of Fig. 2 B.Then, the second voltage signal V2 and tertiary voltage signal V3 will drive the first fluorescent tube 32a and the second fluorescent tube 32b respectively, reach the purpose that drives fluorescent tube.
Embodiment two
With reference to Fig. 4, Fig. 4 is the schematic diagram of expression according to the transformer of embodiment two of the present utility model.The transformer 40 of present embodiment is with transformer 20 differences of embodiment one, transformer 40 also comprises one first connecting portion 49a and one second connecting portion 49b, the label of the constitutive requirements that all the other are identical continues to continue to use, and the function of each constitutive requirements does not repeat them here.
In Fig. 4, also has one first connecting portion 49a between the first magnetic conduction core 24a and the second magnetic conduction core 24b, the first connecting portion 49a is in order to connect the first magnetic conduction core 24a and the second magnetic conduction core 24b, and promptly the first connecting portion 49a connects the second extension 24b and the 3rd extension 24c.In addition, also have one second connecting portion 49b between the 3rd magnetic conduction core 24c and the 4th magnetic conduction core 24d, the second connecting portion 49b is in order to connect the 3rd magnetic conduction core 24c and the 4th magnetic conduction core 24d, and promptly the second connecting portion 49b connects the 6th extension 24f and the 7th extension 24g.In addition, the first magnetic conduction core 24a, the second magnetic conduction core 24b and the first connecting portion 49a are integrated structures, and the 3rd magnetic conduction core 24c, the 4th magnetic conduction core 24d and the second connecting portion 49b are integrated structures.
Yet those skilled in the art also can understand the technology of present embodiment and not be confined to this, for example, the transformer 40 of present embodiment can replace the transformer 20 in the multi-lamp-tube driving system 30 of Fig. 3, to electrically connect drive circuit 31 and the first fluorescent tube 32a and the second fluorescent tube 32b, reach the purpose that drive circuit 31 can drive the first fluorescent tube 32a and the second fluorescent tube 32b equally.
The transformer that the utility model the foregoing description is disclosed, it is the design that constitutes the two main magnetic circuits that separate with eight extensions, break away from the yoke of the design of magnetic conduction core traditionally widely, can avoid when the magnetic conduction core misplaces, producing the unmatched phenomenon of magnetic circuit, and improve the riding quality of transformer.
In sum; though the utility model discloses as above with a preferred embodiment; yet it is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; certainly can be used for a variety of modifications and variations, therefore protection range of the present utility model is when enclosing being as the criterion of being defined with claim.
Claims (12)
1. transformer is characterized in that comprising:
One first drum stand, this first drum stand have one first through hole and one second through hole;
One second drum stand, this second drum stand has a third through-hole;
One the 3rd drum stand, the 3rd drum stand has a fourth hole;
One first magnetic conduction core, this first magnetic conduction core has one first extension and one second extension;
One second magnetic conduction core, this second magnetic conduction core has one the 3rd extension and one the 4th extension;
One the 3rd magnetic conduction core, the 3rd magnetic conduction core have one the 5th extension and one the 6th extension;
One the 4th magnetic conduction core, the 4th magnetic conduction core have one the 7th extension and one the 8th extension;
One lateral coils, this first siding ring curl up in the periphery of this first drum stand;
One first second siding ring, this first second siding ring curls up in the periphery of this second drum stand; And
One second second siding ring, this second second siding ring curls up in the periphery of the 3rd drum stand;
Wherein, this second extension and the 6th extending part are in this first through hole, the 3rd extension and the 7th extending part are in this second through hole, this first extension and the 5th extending part are in this third through-hole, the 4th extension and the 8th extending part are in this fourth hole, and this first magnetic conduction core and the 3rd magnetic conduction core form one first main magnetic circuit, and this second magnetic conduction core and the 4th magnetic conduction core form one second main magnetic circuit.
2. transformer as claimed in claim 1 is characterized in that: between this first magnetic conduction core and this second magnetic conduction core, also have one first connecting portion, in order to connect this first magnetic conduction core and this second magnetic conduction core.
3. transformer as claimed in claim 2 is characterized in that: this first magnetic conduction core, this second magnetic conduction core and this first connecting portion are one-body molded.
4. transformer as claimed in claim 1 is characterized in that: between the 3rd magnetic conduction core and the 4th magnetic conduction core, also have one second connecting portion, in order to connect the 3rd magnetic conduction core and the 4th magnetic conduction core.
5. transformer as claimed in claim 4 is characterized in that: the 3rd magnetic conduction core, the 4th magnetic conduction core and this second connecting portion are one-body molded.
6. transformer as claimed in claim 1 is characterized in that: this first magnetic conduction core, this second magnetic conduction core, the 3rd magnetic conduction core and the 4th magnetic conduction core are into the U font.
7. multi-lamp-tube driving system is characterized in that comprising:
One transformer, this transformer comprises:
One first drum stand, this first drum stand have one first through hole and one second through hole;
One second drum stand, this second drum stand has a third through-hole;
One the 3rd drum stand, the 3rd drum stand has a fourth hole;
One first magnetic conduction core, this first magnetic conduction core has one first extension and one second extension;
One second magnetic conduction core, this second magnetic conduction core has one the 3rd extension and one the 4th extension;
One the 3rd magnetic conduction core, the 3rd magnetic conduction core have one the 5th extension and one the 6th extension;
One the 4th magnetic conduction core, the 4th magnetic conduction core have one the 7th extension and one the 8th extension;
One lateral coils, this first siding ring curls up in the periphery of this first drum stand, and receives one first voltage signal;
One first second siding ring, this first second siding ring curls up in the periphery of this second drum stand, and exports one second voltage signal; And
One second second siding ring, this second second siding ring curls up in the periphery of the 3rd drum stand, and exports a tertiary voltage signal; And
One first fluorescent tube and one second fluorescent tube, this first fluorescent tube and one second fluorescent tube connect this first second siding ring and this second second siding ring respectively, and are driven by this second voltage signal and this tertiary voltage signal respectively;
Wherein, this second extension and the 6th extending part are in this first through hole, the 3rd extension and the 7th extending part are in this second through hole, this first extension and the 5th extending part are in this third through-hole, the 4th extension and the 8th extending part are in this fourth hole, and this first magnetic conduction core and the 3rd magnetic conduction core form one first main magnetic circuit, and this second magnetic conduction core and the 4th magnetic conduction core form one second main magnetic circuit.
8. multi-lamp-tube driving system as claimed in claim 7 is characterized in that: between this first magnetic conduction core and this second magnetic conduction core, also have one first connecting portion, in order to connect this first magnetic conduction core and this second magnetic conduction core.
9. multi-lamp-tube driving system as claimed in claim 8 is characterized in that: this first magnetic conduction core, this second magnetic conduction core and this first connecting portion are one-body molded.
10. multi-lamp-tube driving system as claimed in claim 7 is characterized in that: between the 3rd magnetic conduction core and the 4th magnetic conduction core, also have one second connecting portion, in order to connect the 3rd magnetic conduction core and the 4th magnetic conduction core.
11. multi-lamp-tube driving system as claimed in claim 10 is characterized in that: the 3rd magnetic conduction core, the 4th magnetic conduction core and this second connecting portion are one-body molded.
12. multi-lamp-tube driving system as claimed in claim 7 is characterized in that: this first magnetic conduction core, this second magnetic conduction core, the 3rd magnetic conduction core and the 4th magnetic conduction core are into the U font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420077128 CN2736900Y (en) | 2004-08-10 | 2004-08-10 | Transformer and multiple lamp tubes driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420077128 CN2736900Y (en) | 2004-08-10 | 2004-08-10 | Transformer and multiple lamp tubes driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2736900Y true CN2736900Y (en) | 2005-10-26 |
Family
ID=35307628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420077128 Expired - Fee Related CN2736900Y (en) | 2004-08-10 | 2004-08-10 | Transformer and multiple lamp tubes driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2736900Y (en) |
-
2004
- 2004-08-10 CN CN 200420077128 patent/CN2736900Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20051026 Termination date: 20130810 |