Small transformer and panel lamp
By employing a design that embeds the secondary frame into the primary frame in a small transformer, and combining it with a core structure consisting of a center column and curved side columns, the problem of insufficient insulation distance in miniaturized coil assemblies is solved, achieving compactness and efficient operation of the transformer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-27
AI Technical Summary
In miniaturized coil assemblies, the insulation distance between the external connection terminals on the primary side and the external connection terminals on the secondary side is difficult to guarantee, failing to meet insulation performance requirements and safety standards.
The design of embedding the primary core into the secondary core, combined with the core structure of the central column and the arc-shaped side column, forms a compact transformer structure, which enhances the coupling between the cores and controls the main inductance and adjusts the leakage inductance.
It significantly reduces the size of the transformer, increases leakage inductance, improves working efficiency and overall performance, and ensures insulation performance and safety.
Smart Images
Figure CN224052982U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer technical field, especially a small -size transformer and panel light. BACKGROUND
[0002] In a complex lighting system, a plurality of specifications and models of lamps, such as panel lights, are usually adopted; these lamps each have different voltage and current requirements, and by selecting appropriate transformers, the power supply requirements of various lamps can be flexibly adapted, thereby improving the compatibility and scalability of the entire lighting system.
[0003] With the continuous evolution and innovation of electronic device technology, miniaturization and slimming have become a key trend in electronic device design; in the face of this trend, electronic device manufacturers are collectively facing a challenge: how to further reduce the size of the electronic device shell or reduce its space occupation while maintaining or even improving performance.
[0004] However, in the process of pursuing the miniaturization of the coil assembly, a problem easily arises: while the volume is reduced, it is difficult to ensure that the coil assembly can meet the insulation performance requirements or reach the minimum insulation distance specified by domestic and foreign safety standards; specifically, in the prior art field, the method commonly adopted by the miniaturization coil assembly is to sequentially wind the primary coil and the secondary coil on a shared coil frame, and tightly combine the coil frame with the core to form a coil assembly; such design performs excellently in large or standard size coil assemblies, but in the application of small size coil assemblies, due to the size limitation of the coil frame, the problem that the insulation distance between the external connection terminals of the primary side and the external connection terminals of the secondary side is difficult to be fully guaranteed easily arises.
[0005] It can be seen that the prior art still needs to be improved and improved. UTILITY MODEL CONTENT
[0006] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a small transformer, which realizes the compact design of the transformer structure, not only significantly reduces the volume, but also increases the leakage inductance of the whole transformer.
[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0008] A small transformer comprises a primary skeleton, a secondary skeleton and two magnetic cores; a first through slot is formed in the middle of the secondary skeleton, the primary skeleton is arranged in the first through slot and forms a skeleton structure with the secondary skeleton, and the two magnetic cores are arranged at the top and bottom of the skeleton structure respectively; a second through slot is formed in the middle of the primary skeleton, and an arc-shaped through slot is formed between the sidewall of the primary skeleton and one sidewall of the first through slot; the magnetic core comprises a middle column and an arc-shaped side column, the middle column is arranged in the second through slot, and the arc-shaped side column is arranged in the arc-shaped through slot.
[0009] In the small transformer, the primary skeleton comprises a first top plate, a first bottom plate and a first winding column, the top of the first winding column is fixedly connected with the bottom of the first top plate, the bottom of the first winding column is fixedly connected with the top of the first bottom plate, and the first winding column is used for winding a primary coil; the first top plate is flush with the upper surface of the secondary skeleton, and the first bottom plate is flush with the lower surface of the secondary skeleton; the second through slot is formed in the middle of the first winding column.
[0010] In the small transformer, the secondary skeleton comprises a second top plate, a second bottom plate and a second winding column, the top of the second winding column is fixedly connected with the bottom of the second top plate, the bottom of the second winding column is fixedly connected with the top of the second bottom plate, and the second winding column is used for winding a secondary coil; the second top plate is flush with the upper surface of the first top plate, and the second bottom plate is flush with the lower surface of the first bottom plate; the first through slot is formed in the middle of the second winding column; and an arc-shaped through slot is formed between one sidewall of the first winding column and one sidewall of the first through slot.
[0011] In the small transformer, one side of the first bottom plate is provided with a first L-shaped plate, the other side of the first bottom plate is provided with a second L-shaped plate, one side of the first L-shaped plate is provided with three first connecting pins, and the other side of the second L-shaped plate is provided with four second connecting pins; two ends of one side of the second bottom plate are respectively provided with a third L-shaped plate, and one third connecting pin is arranged on each of the two third L-shaped plates; the lower surface of the vertical plate of the first L-shaped plate is in the same horizontal plane as the lower surface of the vertical plate of the third L-shaped plate, and the upper surface of the horizontal plate of the first L-shaped plate and the upper surface of the horizontal plate of the second L-shaped plate respectively abut against the lower surface of the second bottom plate.
[0012] In the small transformer, two ends of the other side of the second bottom plate are respectively provided with limiting blocks, and the two limiting blocks respectively abut against two ends of the second L-shaped plate; the limiting blocks, the vertical plates of the first L-shaped plate, the vertical plates of the second L-shaped plate and the vertical plates of the third L-shaped plate are used for limiting the moving position of the magnetic core.
[0013] The small transformer, two first wire-through grooves are formed in the first L-shaped plate, and the first wire-through grooves are located between adjacent first connecting pins; a third wire-through groove is formed in the side of the third L-shaped plate, and the third wire-through groove is located between the first connecting pin and the third connecting pin; and a second wire-through groove is formed in the middle of the second L-shaped plate, two second connecting pins are located on one side of the second wire-through groove, and the other two second connecting pins are located on the other side of the second wire-through groove.
[0014] The small transformer, four connecting columns are arranged on the second L-shaped plate, and the four connecting columns correspond to the four second connecting pins in a one-to-one manner; and the connecting columns are located between the second connecting pins and the vertical plate of the second L-shaped plate.
[0015] The small transformer, limit grooves are formed in the two sides of the second bottom plate respectively, and the limit grooves are used for limiting the movement position of the magnetic core.
[0016] The small transformer, the magnetic core comprises a U-shaped main body, the middle column is arranged on the inner side of the middle of the U-shaped main body, and the arc-shaped side column is arranged in the U-shaped main body and located on one side of the middle column; an accommodating groove is formed between the U-shaped main bodies of the two magnetic cores, and the framework structure part is located in the accommodating groove.
[0017] The utility model also correspondingly provides a panel light, including the lamp body, the lamp body is integrated with any small transformer as above.
[0018] Beneficial effects:
[0019] The utility model provides a small transformer, through embedding the primary framework in the secondary framework, realize the compact design of transformer structure, significantly reduce its volume, increase the leakage inductance of transformer whole simultaneously, besides, the magnetic core part ingeniously combines the middle column for controlling main inductance and the arc-shaped side column for adjusting leakage inductance, this design greatly promotes the working efficiency of small transformer, ensures its excellent performance in various application occasions Performance shows, especially, the column structure of arc-shaped design shows more outstanding in promoting the coupling between the magnetic core, its efficiency has the significant promotion compared to traditional upright column, further enhances the overall performance of transformer. ACCURACY OF DRAWINGS
[0020] Figure 1 The utility model provides the structure schematic diagram of small transformer;
[0021] Figure 2 The utility model provides the structure schematic diagram of primary framework and secondary framework;
[0022] Figure 3 The structure schematic diagram of the primary framework is provided in the utility model.
[0023] Figure 4 The structure schematic diagram of the magnetic core is provided in the utility model.
[0024] Main element symbol explanation: 1-primary framework, 11-second through slot, 12-first top plate, 13-first bottom plate, 14-first L-shaped plate, 15-first wiring needle, 16-second L-shaped plate, 17-second wiring needle, 18-wiring post, 2-secondary framework, 21-first through slot, 22-second top plate, 23-second bottom plate, 24-second winding post, 25-third L-shaped plate, 26-third wiring needle, 27-limiting block, 3-magnetic core, 31-middle column, 32-arc-shaped side column, 33-U-shaped main body. DETAILED DESCRIPTION
[0025] The utility model provides a kind of small transformer and panel light, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following referring to drawing and taking example for further detailed description of the utility model.
[0026] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "top", "bottom" and the like is based on the orientation or positional relationship 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 broadly understood, 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.
[0027] Please refer to Figures 1 to 4 The utility model provides a kind of small transformer, including primary framework 1, secondary framework 2 and two magnetic cores 3;The middle part of the secondary framework 2 is equipped with first through slot 21, the primary framework 1 is set in the first through slot 21, with the secondary framework 2 forms framework structure, two the magnetic core 3 is respectively arranged in the top and bottom of the framework structure;The middle part of the primary framework 1 is equipped with second through slot 11, and the sidewall of the primary framework 1 and the one side groove wall of the first through slot 21 form arc-shaped through slot;The magnetic core 3 includes middle column 31 and arc-shaped side column 32, the middle column 31 is located in the second through slot 11, and the arc-shaped side column 32 is located in the arc-shaped through slot.
[0028] The application discloses a small transformer, which realizes compact design of the transformer structure by embedding a primary framework 1 into a secondary framework 2, significantly reduces the volume, and increases the overall leakage inductance of the transformer; in addition, the magnetic core 3 is partly combined with a middle column 31 and an arc-shaped side column 32, wherein the middle column 31 is used for controlling the main inductance, ensuring effective transmission of magnetic flux and reducing magnetic flux leakage, thereby improving the energy conversion efficiency; the side column is used for adjusting the leakage inductance, which is an inductance component that is not expected to exist in the transformer and will cause energy loss and voltage fluctuation; by reasonably setting the positions of the middle column 31 and the arc-shaped side column 32, the working efficiency of the small transformer is greatly improved, and excellent performance in various application occasions is ensured; in particular, the arc-shaped column structure performs better in promoting the coupling between the magnetic cores 3, and the efficiency is significantly improved compared with the traditional upright column, further enhancing the overall performance of the transformer.
[0029] Further, please refer to Figure 1 and Figure 2 The primary framework 1 comprises a first top plate 12, a first bottom plate 13 and a first winding column, the top of the first winding column is fixedly connected with the bottom of the first top plate 12, the bottom of the first winding column is fixedly connected with the top of the first bottom plate 13, and the first winding column is used for winding a primary coil; the first top plate 12 is flush with the upper surface of the secondary framework 2, and the first bottom plate 13 is flush with the lower surface of the secondary framework 2; the second through groove 11 is arranged in the middle of the first winding column.
[0030] In the embodiment, the first top plate 12, the first bottom plate 13 and the first winding column are integrally formed, which can improve the stability of the entire primary framework 1 structure, enable the primary framework 1 to withstand greater mechanical stress, and ensure the stability and safety in the winding process; the top plate of the primary framework 1 is flush with the upper surface of the secondary framework 2, and the bottom plate of the primary framework 1 is also flush with the lower surface of the secondary framework 2, so that the primary framework 1 and the secondary framework 2 are tightly integrated, the formed framework structure is tightly fitted with the inner side wall of the magnetic core 3, and the overall height of the transformer is significantly reduced, thereby facilitating the miniaturization and light weight of the transformer.
[0031] Further, please refer to Figure 1 and Figure 3The secondary skeleton 2 comprises a second top plate 22, a second bottom plate 23 and a second bobbin 24, the top of the second bobbin 24 is fixedly connected with the bottom of the second top plate 22, the bottom of the second bobbin 24 is fixedly connected with the top of the second bottom plate 23, and the second bobbin 24 is used for winding a secondary coil; the second top plate 22 is flush with the upper surface of the first top plate 12, and the second bottom plate 23 is flush with the lower surface of the first bottom plate 13; the first through slot 21 is arranged in the middle of the second bobbin 24; and an arc-shaped through slot is formed between one side wall of the first bobbin and one side slot wall of the first through slot 21.
[0032] In the embodiment, the second top plate 22, the second bottom plate 23 and the second bobbin 24 are integrally formed, so that the stability of the whole secondary skeleton 2 structure can be improved, the secondary skeleton 2 can bear greater mechanical stress, and the stability and safety during winding can be ensured.
[0033] Further, referring to Figs. 1 and 2, Figure 1 and Figure 2 one side of the first bottom plate 13 is provided with a first L-shaped plate 14, the other side of the first bottom plate 13 is provided with a second L-shaped plate 16, one side of the first L-shaped plate 14 is provided with three first contact pins 15, the other side of the second L-shaped plate 16 is provided with four second contact pins 17, one side of the second bottom plate 23 is provided with two third L-shaped plates 25 at two ends respectively, one third contact pin 26 is arranged on each of the two third L-shaped plates 25, the lower surface of the vertical plate of the first L-shaped plate 14 is in the same horizontal plane as the lower surface of the vertical plate of the third L-shaped plate 25, and the upper surface of the horizontal plate of the first L-shaped plate 14 and the upper surface of the horizontal plate of the second L-shaped plate 16 are respectively in abutment with the lower surface of the second bottom plate 23.
[0034] In the embodiment, firstly, by arranging the first L-shaped plate 14 on one side of the first bottom plate 13, the second L-shaped plate 16 on the other side, and the first connecting pin 15 and the second connecting pin 17 on the two L-shaped plates respectively, the orderly arrangement and fixation of the connecting pins are realized, the efficiency and accuracy of the connection are improved, and meanwhile, the design of the first L-shaped plate 14 and the second L-shaped plate 16 also enhances the stability and strength of the structure; secondly, the third L-shaped plate 25 and the third connecting pin 26 arranged on the two sides of the second bottom plate 23 not only further enrich the connection mode, but also make the whole structure more compact and stable; in addition, the position design of the third L-shaped plate 25 makes the lower surface of the vertical plate thereof and the lower surface of the vertical plate of the first L-shaped plate 14 be in the same horizontal plane, which not only is beneficial to maintaining the flatness of the structure, but also helps to realize the effective connection with other components; finally, the horizontal plates of the first L-shaped plate 14 and the second L-shaped plate 16 respectively abut against the lower surface of the second bottom plate 23, and this design not only enhances the integrity of the structure, but also helps to improve the heat dissipation effect, and ensures the stability and reliability of the small transformer in the long-time running process.
[0035] Further, referring to Figures 1 to 3 , two ends of the other side of the second bottom plate 23 are respectively provided with a limiting block 27, and the two limiting blocks 27 respectively abut against the two ends of the second L-shaped plate 16; the limiting block 27, the vertical plate of the first L-shaped plate 14, the vertical plate of the second L-shaped plate 16 and the vertical plate of the third L-shaped plate 25 are used to limit the movable position of the magnetic core 3.
[0036] In the embodiment, by arranging the limiting block 27 on the two ends of the other side of the second bottom plate 23 and abutting against the two ends of the second L-shaped plate 16, the movable range of the second L-shaped plate 16 is effectively limited; at the same time, in combination with the vertical plate of the first L-shaped plate 14, the vertical plate of the second L-shaped plate 16 and the vertical plate of the third L-shaped plate 25, a stable limiting structure is formed, which ensures the stability and accuracy of the magnetic core 3 in the specific position, and enhances the reliability and safety of the magnetic core 3 in the working process.
[0037] Further, referring to Figures 1 to 3 , two first wire passing grooves are arranged on the first L-shaped plate 14, and the first wire passing grooves are located between the adjacent first connecting pins 15; a third wire passing groove is arranged on the side of the third L-shaped plate 25, and the third wire passing groove is located between the first connecting pin 15 and the third connecting pin 26; a second wire passing groove is arranged in the middle of the second L-shaped plate 16, two second connecting pins 17 are located on one side of the second wire passing groove, and the other two second connecting pins 17 are located on the other side of the second wire passing groove.
[0038] In the embodiment, by opening two first wire passing grooves on the first L-shaped plate 14, and the wire passing grooves are located between adjacent first connecting pins 15, the cable can be effectively managed and organized, the cable chaos and crossing are avoided, the neatness inside the small transformer and the convenience of cable management are improved; the third wire passing groove opened on the side of the third L-shaped plate 25 is ingeniously located between the first connecting pin 15 and the third connecting pin 26, which further optimizes the layout of the cable, makes the cable more reasonable, reduces the bending and twisting of the cable, thereby improving the durability of the cable and the stability of signal transmission.
[0039] Further, please refer to Figures 1 to 3 The second L-shaped plate 16 is provided with four connecting columns 18, and the four connecting columns 18 correspond to the four second connecting pins 17 one by one; the connecting column 18 is located between the second connecting pin 17 and the vertical plate of the second L-shaped plate 16.
[0040] In the embodiment, the connecting column 18 is integrally formed with the second L-shaped plate 16; by providing four connecting columns 18 on the second L-shaped plate 16 and corresponding to the four second connecting pins 17 one by one, the orderliness and accuracy of circuit connection are realized, which not only simplifies the wiring process, reduces the risk of wiring error, but also improves the stability and reliability of the small transformer as a whole; further, the connecting column 18 is located between the second connecting pin 17 and the vertical plate of the second L-shaped plate 16, so that the connecting column 18 can stably support and fix the wire, prevent the wire from loosening or falling off during the wiring process, and further enhance the stability and safety of the connection; in addition, a heat dissipation channel is formed between the connecting column 18 and the vertical plate of the second L-shaped plate 16, which helps to dissipate the heat generated by the small transformer during operation in time, thereby ensuring its stability and reliability during long-time operation.
[0041] Further, limit grooves are opened on both sides of the second bottom plate 23, and the limit grooves are used to limit the moving position of the magnetic core 3.
[0042] In the embodiment, by opening limit grooves on both sides of the second bottom plate 23, the moving range of the magnetic core 3 can be effectively limited, the stable movement of the magnetic core 3 in the preset path is ensured, the deviation or shaking of the magnetic core 3 during movement is avoided, and the stability and reliability of the small transformer during operation are improved; in addition, the design of the limit groove also simplifies the positioning and installation process of the magnetic core 3, reduces the installation difficulty, and improves the installation efficiency.
[0043] Further, please refer toFigure 1 and Figure 4 The magnetic core 3 comprises a U-shaped body 33, the middle column 31 is arranged in the middle of the inner side of the U-shaped body 33, and the arc-shaped side column 32 is arranged in the U-shaped body 33 and located at one side of the middle column 31; the accommodating grooves are formed between the U-shaped bodies 33 of the two magnetic cores 3, and the framework structure part is located in the accommodating grooves.
[0044] In the embodiment, the middle column 31 and the side column are integrally formed with the U-shaped body 33, respectively; the accommodating grooves formed between the U-shaped bodies 33 of the two magnetic cores 3 can stably accommodate the framework structure, and the stability and reliability of the overall structure of the small transformer are enhanced.
[0045] The utility model also correspondingly provides a panel light, including the lamp body, the lamp body is integrated with small transformer like above any described in.
[0046] The present application aims to protect a transformer specially designed for panel lights, which is characterized by being in harmony with the thin design of the panel light; in order to realize seamless integration with the overall lamp, the transformer to be protected in the present application particularly emphasizes compactness, miniaturization and flatness in structural design; such a miniaturized and flattened transformer not only saves space but also improves installation flexibility, so that the panel light can be easily embedded in various modern buildings and interior decorations without appearing conspicuous; in addition, the flat design also helps to improve the heat dissipation efficiency, ensuring that the transformer maintains good performance and stability during long-term operation.
[0047] It can be understood that, for those skilled in the art, equivalent replacement or change can be made according to the technical scheme and utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the utility model.
Claims
1. A small transformer, characterized by The primary skeleton, secondary skeleton and two magnetic cores are included; the middle part of the secondary skeleton is provided with a first through slot, the primary skeleton is arranged in the first through slot, and the primary skeleton and the secondary skeleton form a skeleton structure, and the two magnetic cores are arranged at the top and bottom of the skeleton structure respectively; the middle part of the primary skeleton is provided with a second through slot, and an arc-shaped through slot is formed between the side wall of the primary skeleton and one side slot wall of the first through slot; the magnetic core includes a middle column and an arc-shaped side column, the middle column is located in the second through slot, and the arc-shaped side column is located in the arc-shaped through slot.
2. A small transformer according to claim 1, characterized in that The primary skeleton includes a first top plate, a first bottom plate and a first winding column, the top of the first winding column is fixedly connected with the bottom of the first top plate, the bottom of the first winding column is fixedly connected with the top of the first bottom plate, and the first winding column is used for winding a primary coil; the first top plate is flush with the upper surface of the secondary skeleton, and the first bottom plate is flush with the lower surface of the secondary skeleton; the second through slot is arranged in the middle part of the first winding column.
3. A small transformer according to claim 2, characterized in that The secondary skeleton includes a second top plate, a second bottom plate and a second winding column, the top of the second winding column is fixedly connected with the bottom of the second top plate, the bottom of the second winding column is fixedly connected with the top of the second bottom plate, and the second winding column is used for winding a secondary coil; the second top plate is flush with the upper surface of the first top plate, and the second bottom plate is flush with the lower surface of the first bottom plate; the first through slot is arranged in the middle part of the second winding column; an arc-shaped through slot is formed between one side wall of the first winding column and one side slot wall of the first through slot.
4. A small transformer according to claim 3, characterized in that One side of the first bottom plate is provided with a first L-shaped plate, the other side of the first bottom plate is provided with a second L-shaped plate, one side of the first L-shaped plate is provided with three first wiring pins, the other side of the second L-shaped plate is provided with four second wiring pins; two ends of one side of the second bottom plate are respectively provided with third L-shaped plates, and one third wiring pin is arranged on each of the two third L-shaped plates; the lower surfaces of the vertical plates of the first L-shaped plate and the third L-shaped plate are in the same horizontal plane, and the upper surfaces of the horizontal plates of the first L-shaped plate and the second L-shaped plate respectively abut against the lower surface of the second bottom plate.
5. A small transformer according to claim 4, characterized in that Two ends of the other side of the second bottom plate are respectively provided with limiting blocks, and the two limiting blocks respectively abut against two ends of the second L-shaped plate; the limiting blocks, the vertical plates of the first L-shaped plate, the vertical plates of the second L-shaped plate and the vertical plates of the third L-shaped plate are used for limiting the movement position of the magnetic core.
6. A small transformer according to claim 4, characterized in that Two first wire passing grooves are arranged on the first L-shaped plate, and the first wire passing grooves are located between adjacent first wiring pins; a third wire passing groove is arranged on the side of the third L-shaped plate, and the third wire passing groove is located between the first wiring pin and the third wiring pin; a second wire passing groove is arranged in the middle part of the second L-shaped plate, two second wiring pins are located on one side of the second wire passing groove, and the other two second wiring pins are located on the other side of the second wire passing groove.
7. A small transformer according to claim 6, characterized in that The second L-shaped plate is provided with four connecting posts, and the four connecting posts correspond to the four second connecting pins one by one. The connecting post is located between the second connecting pin and the vertical plate of the second L-shaped plate.
8. A small transformer according to claim 3, characterized in that Two sides of the second bottom plate are respectively provided with limiting grooves for limiting the movable position of the magnetic core.
9. A small transformer according to claim 1, characterized in that The magnetic core comprises a U-shaped body, a middle column is arranged at the middle of the inner side of the U-shaped body, and an arc-shaped side column is arranged in the U-shaped body and located at one side of the middle column; an accommodating groove is formed between the U-shaped bodies of the two magnetic cores, and the framework structure part is located in the accommodating groove.
10. A panel light characterized by The lamp body is integrated with the small transformer as claimed in any one of claims 1-9.