Ultrathin transformer and circuit board

Abstract

The ultrathin transformer comprises a first magnetic core, a second magnetic core, a third magnetic core, a framework and a protective cover, a through groove is formed in the middle of the framework, the first magnetic core is arranged in the through groove, and the two ends of the first magnetic core are located outside the through groove respectively; the second magnetic core and the third magnetic core are oppositely arranged on the two sides of the framework, and the two ends of the second magnetic core and the two ends of the third magnetic core abut against the two ends of the first magnetic core correspondingly. Mounting grooves are formed between one end of the second magnetic core and the framework and between one end of the third magnetic core and the framework, and the protective covers are arranged in the mounting grooves; according to the ultrathin transformer, the first magnetic core is arranged in the through groove in the middle of the framework, the second magnetic core and the third magnetic core are tightly connected with the two ends of the first magnetic core in an abutting mode from the two sides of the framework respectively, a stable triangular supporting structure is formed, the overall size of the transformer is reduced, and the overall stability and anti-seismic performance of the transformer are improved; and the device can adapt to various complex working environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field especially relates to a kind of ultra-thin transformer and circuit board. BACKGROUND

[0002] Common three-magnetic-core decoupling magnetic integrated transformer structure includes four groups of windings, intermediate cross-type magnetic core, U-shaped magnetic core one and U-shaped magnetic core two;Among them, U-shaped magnetic core one and U-shaped magnetic core two are located at the two sides of intermediate cross-type magnetic core and the installation direction is opposite, and they are mutually 90 degrees;U-shaped magnetic core one and U-shaped magnetic core two are in the same direction with the two wings of intermediate cross-type magnetic core, and U-shaped magnetic core one and one wing of intermediate cross-type magnetic core form a transformer, and U-shaped magnetic core two and the other wing of intermediate cross-type magnetic core form another transformer.

[0003] The three-magnetic-core integrated transformer in current market generally faces the problem of large size, and this defect in size not only damages the appearance aesthetics of the transformer, but also limits its application potential in space-limited application environment;For example, portable electronic products or compact electronic equipment, the transformer with large size may occupy too much space, which not only leads to the incoordination of overall design, but also may have negative impact on the performance of product and user experience.

[0004] It can be seen that the prior art needs to be improved and improved. INVENTION CONTENTS

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide an ultra-thin transformer, which not only reduces the overall size of the transformer, but also improves the stability and shock resistance of the whole transformer, so that it can adapt to various complex working environments.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An ultra-thin transformer, comprising a first magnetic core, a second magnetic core, a third magnetic core, a skeleton and a protective cover, a through slot is formed in the middle part of the skeleton, the first magnetic core is arranged in the through slot, and the two ends of the first magnetic core are located outside the through slot respectively;The second magnetic core and the third magnetic core are arranged on the two sides of the skeleton respectively, one end of the second magnetic core and one end of the third magnetic core abut one end of the first magnetic core respectively, the other end of the second magnetic core and the other end of the third magnetic core abut the other end of the first magnetic core respectively;One end of the second magnetic core and one end of the third magnetic core are provided with a mounting groove between the skeleton, and the protective cover is arranged in the mounting groove.

[0008] The skeleton comprises a first bottom plate, a fixed column and a second bottom plate, the first bottom plate is fixedly connected with the bottom of one end of the fixed column, and the second bottom plate is fixedly connected with the bottom of the other end of the fixed column; the through slot is arranged in the middle of the fixed column, one end of the first magnetic core, one end of the second magnetic core and one end of the third magnetic core are located on the first bottom plate respectively, and the other end of the first magnetic core, the other end of the second magnetic core and the other end of the third magnetic core are located on the second bottom plate respectively; the second magnetic core and the third magnetic core are arranged on the two sides of the fixed column respectively; the installation slot is arranged between one end of the second magnetic core and one end of the third magnetic core and the fixed column.

[0009] The first positioning plate is arranged at one end of the fixed column, and the second positioning plate is arranged at the other end of the fixed column; the second magnetic core and the third magnetic core are U-shaped magnetic cores, the horizontal plates located at the two ends of the second magnetic core abut against the first positioning plate and the second positioning plate respectively, and the horizontal plates located at the two ends of the third magnetic core abut against the first positioning plate and the second positioning plate respectively.

[0010] The first limiting plate and the second limiting plate are arranged in the middle of the fixed column, and the first limiting groove is arranged between the first limiting plate and the second limiting plate; the first limiting block is arranged in the middle of the second magnetic core, the second limiting block is arranged in the middle of the third magnetic core, and the first limiting block and the second limiting block are connected with the first limiting groove respectively.

[0011] The third limiting plate and the fourth limiting plate are arranged at the bottom of the fixed column, the second limiting groove is arranged between the third limiting plate and the first bottom plate, the third limiting groove is arranged between the fourth limiting plate and the first limiting plate, the third limiting block and the fourth limiting block are arranged at the two ends of the bottom of the protective cover respectively, the third limiting block is connected with the second limiting groove, and the fourth limiting block is connected with the third limiting groove.

[0012] The bottom of the first limiting plate, the bottom of the second limiting plate, the bottom of the third limiting plate and the bottom of the fourth limiting plate are respectively provided with a plurality of first wire outlet grooves.

[0013] The bottom of the first bottom plate and the bottom of the second bottom plate are respectively provided with a plurality of second wire outlet grooves, and the plurality of first wire outlet grooves correspond to the plurality of second wire outlet grooves one by one.

[0014] The first bottom plate and the second bottom plate are provided with a plurality of connecting pins at one end and the other end respectively, and adjacent connecting pins are arranged in a staggered manner with adjacent second wire outlet grooves.

[0015] The first bottom plate is provided with a wire hanging block at one end, and the wire hanging block is arranged on the top of the first bottom plate, and a wire hanging groove is arranged between the wire hanging block and the upper surface of the first bottom plate.

[0016] The utility model also correspondingly provides a circuit board, the circuit board is provided with the super thin transformer that any above described is arranged.

[0017] Beneficial effects:

[0018] The utility model provides a super thin transformer, first magnetic core is arranged in the through groove of the middle part of framework, and second magnetic core and third magnetic core are closely abutted with the both ends of first magnetic core from the both sides of framework, form a stable triangle support structure, not only ensure the close adhesion between three magnetic cores, effectively reduce the overall size of transformer, still significantly improve the stability and anti -shock ability of transformer whole, make transformer can respond various complex working environment, effectively widen the application scope of transformer. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the first structure schematic diagram of super thin transformer provided by the utility model;

[0020] Figure 2 It is the second structure schematic diagram of super thin transformer provided by the utility model;

[0021] Figure 3 It is the structure schematic diagram of framework and first magnetic core provided by the utility model.

[0022] Main element symbol explanation: 1-first magnetic core, 2-second magnetic core, 21-first limit block, 3-third magnetic core, 31-second limit block, 4-framework, 41-fixed column, 411-first positioning plate, 412-second positioning plate, 413-first limit plate, 414-second limit plate, 415-third limit plate, 416-fourth limit plate, 42-first bottom plate, 43-second bottom plate, 44-first wire outlet groove, 45-second wire outlet groove, 46-connecting pin, 47-wire hanging block, 5-protection cover, 51-third limit block. DETAILED DESCRIPTION

[0023] The utility model provides a super thin transformer and circuit board, in order to make the purpose, technical scheme and effect of the utility model more clear, explicit, the following refers to the drawing and raises example to make further detailed description to the utility model.

[0024] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "top", "bottom", "upper" and the like is based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model; in addition, the terms "mounting", "connecting" and the like should be understood in a broad sense, and for ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Please refer to Figures 1 to 3 The utility model provides a kind of ultra-thin transformer, including first magnetic core 1, second magnetic core 2, third magnetic core 3, framework 4 and protective cover 5, the middle part of the framework 4 is equipped with through slot, the first magnetic core 1 is set in the through slot, and the two ends of the first magnetic core 1 are located outside the through slot respectively;Second magnetic core 2 and third magnetic core 3 are oppositely arranged on the two sides of the framework 4, one end of the second magnetic core 2 and one end of the third magnetic core 3 are respectively abutted with one end of the first magnetic core 1, the other end of the second magnetic core 2 and the other end of the third magnetic core 3 are respectively abutted with the other end of the first magnetic core 1;One end of the second magnetic core 2 and one end of the third magnetic core 3 are provided with mounting groove between the framework 4, and the protective cover 5 is arranged in the mounting groove.

[0026] The ultra-thin transformer disclosed in the application is arranged in the through slot in the middle part of the framework 4, and the second magnetic core 2 and the third magnetic core 3 are tightly abutted with the two ends of the first magnetic core 1 from the two sides of the framework 4, forming a stable triangular support structure, which not only ensures the close fit between the three magnetic cores, effectively reduces the overall size of the transformer, but also significantly improves the stability and shock resistance of the transformer as a whole, so that the transformer can cope with various complex working environments, effectively widening the application range of the transformer; further, by arranging the mounting groove, the protective cover 5 is rapidly positioned and mounted, and at the same time, an effective limiting function is provided during the operation of the transformer, the time required for installation is reduced, and the stability and reliability of the transformer operation are improved; in addition, by introducing the protective cover 5, the necessary safety distance between the magnetic core and the coil is maintained, which not only ensures the safe operation of the transformer, but also ensures that the operation of the transformer meets the relevant safety regulations.

[0027] In the embodiment, the protective cover 5 is made of insulating material; the first magnetic core 1, the second magnetic core 2 and the third magnetic core 3 are made of soft magnetic ferrite material; the framework 4 is made of insulating material, preferably thermosetting phenolic resin material, and is injection molded by mold.

[0028] Further, please refer to Figures 1 to 3The skeleton 4 comprises a first bottom plate 42, a fixed column 41 and a second bottom plate 43, the first bottom plate 42 is fixedly connected with the bottom of one end of the fixed column 41, and the second bottom plate 43 is fixedly connected with the bottom of the other end of the fixed column 41; the through slot is arranged in the middle of the fixed column 41, one end of the first magnetic core 1, one end of the second magnetic core 2 and one end of the third magnetic core 3 are located on the first bottom plate 42 respectively, and the other end of the first magnetic core 1, the other end of the second magnetic core 2 and the other end of the third magnetic core 3 are located on the second bottom plate 43 respectively; the second magnetic core 2 and the third magnetic core 3 are arranged on the two sides of the fixed column 41 respectively; the first mounting groove is arranged between one end of the second magnetic core 2 and the fixed column 41 and one end of the third magnetic core 3 and the fixed column 41.

[0029] In the embodiment, the first bottom plate 42, the fixed column 41 and the second bottom plate 43 are integrally formed; a firm support frame is formed between the first bottom plate 42, the fixed column 41 and the second bottom plate 43, which ensures the stability and durability of the whole skeleton 4 when various external forces are borne, that is, the integrally formed skeleton 4 not only improves the reliability of the transformer during operation, but also reduces the maintenance cost caused by structural damage.

[0030] Further, referring to Figure 3 , one end of the fixed column 41 is provided with a first positioning plate 411, and the other end of the fixed column 41 is provided with a second positioning plate 412; the second magnetic core 2 and the third magnetic core 3 are both U-shaped magnetic cores, the horizontal plates located at the two ends of the second magnetic core 2 abut against the first positioning plate 411 and the second positioning plate 412 respectively; the horizontal plates located at the two ends of the third magnetic core 3 abut against the first positioning plate 411 and the second positioning plate 412 respectively.

[0031] In the embodiment, the first positioning plate 411 and the second positioning plate 412 are integrally formed with the fixed column 41; by arranging the first positioning plate 411 and the second positioning plate 412, stable support and positioning are provided for the second magnetic core 2 and the third magnetic core 3, which ensures the connection stability of the second magnetic core 2 and the third magnetic core 3 with the skeleton 4, and is conducive to improving the efficiency and performance of the magnetic circuit.

[0032] Further, referring to Figures 1 to 3 , the middle of the fixed column 41 is provided with a first limiting plate 413 and a second limiting plate 414, and a first limiting groove is arranged between the first limiting plate 413 and the second limiting plate 414; the middle of the second magnetic core 2 is provided with a first limiting block 21, and the middle of the third magnetic core 3 is provided with a second limiting block 31, and the first limiting block 21 and the second limiting block 31 are connected with the first limiting groove respectively.

[0033] In the embodiment, the first limiting plate 413 and the second limiting plate 414 are integrally formed with the fixing column 41, the first limiting block 21 is integrally formed with the second magnetic core 2, and the second limiting block 31 is integrally formed with the third magnetic core 3; by arranging the first limiting groove, a stable limiting space is provided for the first limiting block 21 of the second magnetic core 2 and the second limiting block 31 of the third magnetic core 3, the position stability of the second magnetic core 2 and the third magnetic core 3 after assembly is ensured, and when facing a severe vibration or an external force impact, the second magnetic core 2 and the third magnetic core 3 can also maintain their original positions, thereby ensuring the reliability and durability of the entire transformer during work; further, the precise matching of the first limiting block 21 and the second limiting block 31 with the first limiting groove also ensures the accurate positioning of the second magnetic core 2 and the third magnetic core 3 during assembly, which helps to maintain the relative position accuracy between the second magnetic core 2 and the third magnetic core 3, thereby ensuring that the performance of the transformer reaches the expectation, and meeting the requirement of high-precision equipment on the position accuracy of components.

[0034] Further, referring to Figure 1 and Figure 2 , the bottom of the fixing column 41 is provided with a third limiting plate 415 and a fourth limiting plate 416, the second limiting groove is arranged between the third limiting plate 415 and the first bottom plate 42, the third limiting groove is arranged between the fourth limiting plate 416 and the first limiting plate 413, and the bottom of the protective cover 5 is respectively provided with a third limiting block 51 and a fourth limiting block, the third limiting block 51 is connected with the second limiting groove, and the fourth limiting block is connected with the third limiting groove.

[0035] In the embodiment, the third limiting plate 415 and the fourth limiting plate 416 are integrally formed with the fixing column 41 respectively; the third limiting block 51 and the fourth limiting block are integrally formed with the protective cover 5 respectively; by arranging the third limiting block 51 and the fourth limiting block on both sides of the protective cover 5 respectively and connecting the third limiting block 51 and the fourth limiting block with the second limiting groove and the third limiting groove respectively, the accurate alignment and stable fixation of the protective cover 5 during installation are ensured, which not only improves the installation efficiency, but also greatly reduces the risk of structural damage caused by improper installation, thereby prolonging the service life of the product.

[0036] Further, referring to Figure 2 , the bottom of the first limiting plate 413, the bottom of the second limiting plate 414, the bottom of the third limiting plate 415, and the bottom of the fourth limiting plate 416 are respectively provided with a plurality of first wire outlet grooves 44.

[0037] Further, referring to Figure 2The bottom of the first bottom plate 42 and the bottom of the second bottom plate 43 are respectively provided with a plurality of second wire outlet grooves 45.

[0038] In the embodiment, the first wire outlet groove 44 and the second wire outlet groove 45 are arranged, so that the outgoing wires are orderly arranged, the outgoing wires are prevented from interfering with each other, the internal structure of the transformer is clear and orderly, the internal structure of the transformer is neat, the probability of failure is reduced, the stability and reliability of the transformer during operation are improved, and the heat dissipation efficiency of the transformer is improved.

[0039] Further, referring to Figures 1 to 3 One end of the first bottom plate 42 and the other end of the second bottom plate 43 are respectively provided with a plurality of terminal pins 46, and adjacent terminal pins 46 are arranged in a staggered manner with adjacent second wire outlet grooves 45.

[0040] In the embodiment, the terminal pin 46 is welded or crimped to the framework 4; the terminal pin 46 ensures that the current can stably and efficiently flow from the transformer to the load or from one part of the transformer to another part, so that the transformer can run smoothly, and the continuity of the circuit is ensured; the terminal pin 46 is arranged in a staggered manner with the second wire outlet groove 45, so that the electrical interference between adjacent terminal pins 46 is avoided, the performance of the transformer is improved, and the reliability of the transformer in a complex electrical environment is enhanced.

[0041] Further, referring to Figure 1 And Figure 3 One end of the first bottom plate 42 is provided with a wire hanging block 47, the wire hanging block 47 is arranged on the top of the first bottom plate 42, and a wire hanging groove is arranged between the wire hanging block 47 and the upper surface of the first bottom plate 42.

[0042] In the embodiment, the wire hanging block 47 is integrally formed with the first bottom plate 42; the wire hanging block 47 not only ensures that the creeping path of the current on the surface of the transformer is extended, so that the safety risk caused by arc discharge and the like is greatly reduced, but also shortens the overall length of the transformer, so that the transformer is more compact and efficient, that is, the overall volume of the transformer is further reduced, and the application range of the transformer is effectively widened.

[0043] The utility model also correspondingly provides a kind of circuit board, and the circuit board is provided with the ultra-thin transformer as any of the above.

[0044] It can be understood that for those skilled in the art, the technical scheme and the utility model concept of the utility model can be replaced or changed equivalently, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. An ultra-thin transformer, characterized by, The application relates to a magnetic core assembly, which comprises a first magnetic core, a second magnetic core, a third magnetic core, a framework and a protective cover.

2. An ultra-thin transformer according to claim 1, characterized in that The framework comprises a first bottom plate, a fixed column and a second bottom plate, the first bottom plate is fixedly connected with the bottom of one end of the fixed column, the second bottom plate is fixedly connected with the bottom of the other end of the fixed column, a through groove is arranged in the middle of the fixed column, one end of the first magnetic core, one end of the second magnetic core and one end of the third magnetic core are located on the first bottom plate, the other end of the first magnetic core, the other end of the second magnetic core and the other end of the third magnetic core are located on the second bottom plate, the second magnetic core and the third magnetic core are arranged on the two sides of the fixed column, and the installation groove is arranged between one end of the second magnetic core, one end of the third magnetic core and the fixed column.

3. An ultra-thin transformer according to claim 2, characterized in that One end of the fixed column is provided with a first positioning plate, the other end of the fixed column is provided with a second positioning plate, the second magnetic core and the third magnetic core are U-shaped magnetic cores, the horizontal plates located at the two ends of the second magnetic core abut against the first positioning plate and the second positioning plate respectively, and the horizontal plates located at the two ends of the third magnetic core abut against the first positioning plate and the second positioning plate respectively.

4. An ultrathin transformer according to claim 3, characterized in that The middle of the fixed column is provided with a first limiting plate and a second limiting plate, a first limiting groove is arranged between the first limiting plate and the second limiting plate, a first limiting block is arranged in the middle of the second magnetic core, a second limiting block is arranged in the middle of the third magnetic core, and the first limiting block and the second limiting block are connected with the first limiting groove respectively.

5. An ultrathin transformer according to claim 4, characterized in that The bottom of the fixed column is provided with a third limiting plate and a fourth limiting plate, a second limiting groove is arranged between the third limiting plate and the first bottom plate, a third limiting groove is arranged between the fourth limiting plate and the first limiting plate, the bottom of the protective cover is provided with a third limiting block and a fourth limiting block respectively, the third limiting block is connected with the second limiting groove, and the fourth limiting block is connected with the third limiting groove.

6. An ultrathin transformer according to claim 5, characterized in that The bottom of the first limiting plate, the bottom of the second limiting plate, the bottom of the third limiting plate and the bottom of the fourth limiting plate are respectively provided with a plurality of first wire outlet grooves.

7. An ultrathin transformer according to claim 6, characterized in that The bottom of the first bottom plate and the bottom of the second bottom plate are respectively provided with a plurality of second wire outlet grooves, and the plurality of first wire outlet grooves correspond to the plurality of second wire outlet grooves one by one.

8. An ultrathin transformer according to claim 7, characterized in that One end of the first bottom plate and the other end of the second bottom plate are respectively provided with a plurality of connecting pins, and adjacent connecting pins and adjacent second wire outlet grooves are arranged in a staggered mode.

9. An ultrathin transformer according to claim 2, characterized in that, One end of the first bottom plate is provided with a hanging line block, the hanging line block is arranged on the top of the first bottom plate, and a hanging line groove is arranged between the hanging line block and the upper surface of the first bottom plate.

10. A circuit board, characterized by The circuit board is provided with the ultra-thin transformer according to any one of claims 1-9.

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