Three-layer coil transformer stable to use

Abstract

The utility model discloses a three-layer coil transformer stable to use. The three-layer coil transformer comprises a framework, a reel, coils and a magnetic core, the framework is provided with a first winding part; the winding frame is provided with a winding column, the winding column is provided with a partition plate so that the winding column can be divided into a second winding part and a third winding part, and the three coils are arranged on the first winding part, the second winding part and the third winding part respectively. The number of the magnetic cores is two, each magnetic core is provided with a middle column, the framework and the reel are respectively provided with a through hole, the two magnetic cores are oppositely arranged up and down to form a structure shaped like a Chinese character'ri ', and the middle columns of the magnetic cores respectively extend into the through holes of the framework and the reel; thus, the three coils are arranged at intervals, high-power use of the transformer is achieved, meanwhile, the problem that the three coils influence one another is avoided, leakage inductance of the transformer is reduced, stable use of a circuit of an electronic product is guaranteed, the safety performance of the electronic product is improved, usability is good, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer field technology especially is a kind of three-layer coil transformer of stable use. BACKGROUND

[0002] With the development of science and technology, electronic products are smaller and smaller, and the volume of magnetic components is also required to be smaller and thinner. Currently, transformers are essential devices in daily life and industrial production. The existence of transformers is becoming more and more important. While emphasizing functionality, the structure of the transformer also needs to be considered. The design and use of the transformer are particularly important. It can convert the AC high-voltage mains commonly used in external circuits into low-voltage DC for some low-power devices. The coils of traditional transformers are single-layer designed. In different application scenarios, transformers with high power are required. Under the condition that the magnetic core material is the same, the height of the coil will also increase when higher power requirements are proposed, and the volume of the product will also increase.

[0003] Later, a transformer appeared on the market. Two or more coils are sequentially stacked on the framework, and the two are assembled and connected by a fixing structure to achieve high-power design of the transformer. However, the existing transformer structure design is not good, and the multiple coils on the framework are prone to mutual influence during use, which increases the leakage inductance of the transformer, resulting in a high reverse peak voltage, which seriously affects the stability of the circuit, reduces the safety performance of the electronic product, and has poor usability and small application range.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a three-layer coil transformer with stable use, which uses a partition plate to divide the winding column into second and third winding parts, and three coils are arranged on the first to third winding parts respectively, so that the three coils are arranged separately, realizing high-power use of the transformer, avoiding the problem of mutual influence of the three coils, reducing the leakage inductance of the transformer, ensuring the stability of the circuit of the electronic product, improving the safety performance of the electronic product, and having a wide application range.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a kind of stable three-layer coil transformer using, including framework, bobbin, coil and magnetic core;Wherein:The first winding part is provided on the framework;The bobbin is arranged at the upper end of first winding part, and the bobbin has winding column, and the center position of winding column is provided with partition to divide winding column and be provided with second winding part and third winding part with upper and lower spacing arrangement, and the coil is provided with three and is arranged on first winding part, second winding part and third winding part respectively;The magnetic core is provided with two, and the magnetic core is E-shaped, and the magnetic core has middle column, and the framework and bobbin are all provided with through hole, and the through hole of the framework is penetrated first winding part in upper end, and the through hole of the framework and the through hole of bobbin are interconnected, and two magnetic cores are oppositely arranged to form a sun-shaped structure, and the middle column of the magnetic core is respectively inserted into the through hole of the framework and the through hole of bobbin.

[0008] As a preferred scheme, the upper end of the first winding part is provided with a boss, a chamber with a front opening is formed in the boss, the bobbin is arranged on the chamber from the front opening, and the through hole of the framework penetrates the boss in the upper end.

[0009] As a preferred scheme, a glue inlet for communicating with the chamber and being used for glue filling is formed in the rear end of the boss, and the bobbin is located in front of the glue inlet.

[0010] As a preferred scheme, the rear end of the bobbin is provided with a recess corresponding to the glue inlet.

[0011] As a preferred scheme, the chamber is provided with a positioning part extending towards the bobbin, and the bobbin is provided with a positioning groove corresponding to the positioning part, and the positioning part and the positioning groove are matched and connected with each other to realize the positioning connection of the bobbin on the chamber.

[0012] As a preferred scheme, the positioning part is provided with two groups, and the two groups of positioning parts are arranged on the upper end surface and the lower end surface of the chamber respectively; correspondingly, the positioning groove is provided with two groups, and the two groups of positioning grooves are arranged on the upper end and the lower end of the bobbin respectively.

[0013] As a preferred scheme, the bobbin includes an upper plate part and a lower plate part, the winding column is arranged between the upper plate part and the lower plate part, the through hole of the bobbin is arranged on the winding column, and the through hole of the bobbin penetrates the upper plate part and the lower plate part.

[0014] As a preferred scheme, the lower end of the framework is provided with a support part extending downward.

[0015] The utility model discloses have obvious advantages and beneficial effects compared with prior art, specifically speaking, from the above technical scheme can know, it mainly is through the design of each component, utilize the baffle and divide the winding post into second, third winding part, cooperate three coils and set up on the first to third winding part respectively, to make three coils between the separate arrangement, thereby realized the high -power use of transformer, simultaneously, avoided three coils and appeared the problem of mutual influence, reduced the leakage inductance of transformer, guaranteed the circuit use stability of electronic product, thereby improved the safety performance of electronic product, and the usability is good, and the scope of application is wide;

[0016] And, the setting of the glue inlet is convenient for the glue pouring operation of the coil of the winding frame on the cavity, effectively protects two coils of the cavity, thereby improves the use reliability of the two coils of the winding frame, and the practicality is strong, meanwhile, the setting of the avoiding recess is favorable to the smoothness of the glue flowing into the cavity, guarantees the contact stability between the glue and the two coils.

[0017] Furthermore, the setting of the positioning part and the positioning groove is favorable to the accurate installation positioning of the winding frame in the cavity, is favorable to the assembly production of the subsequent process, cooperates the setting of two groups of positioning parts and two groups of positioning grooves, improves the positioning firmness of the winding frame in the cavity, thereby improves the use stability of the whole transformer, meanwhile, the setting of the supporting part is favorable to the supporting positioning between the transformer and the PCB board, guarantees the use stability of the transformer.

[0018] In order to more clearly set forth the structural features and functions of the utility model, the utility model is specifically explained in detail below by combining with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the front view of the embodiment of the utility model (the coil is not shown in the drawing);

[0020] Fig. 2 It is the first structure schematic view of the framework of the embodiment of the utility model;

[0021] Fig. 3 It is the second structure schematic view of the framework of the embodiment of the utility model;

[0022] Fig. 4 It is the structure schematic view of the winding frame of the embodiment of the utility model.

[0023] Brief description of drawings:

[0024] 101, through hole 11, framework

[0025] 111, first winding part 112, supporting part

[0026] 12, winding frame 121, winding post

[0027] 122, second winding portion 123, third winding portion

[0028] 124, upper plate portion 125, lower plate portion

[0029] 126, avoiding recess 127, positioning slot

[0030] 128, partition 13, magnetic core

[0031] 14, boss 141, chamber

[0032] 142, glue inlet 143, positioning portion

[0033] 144, convex strip 145, upper convex strip

[0034] 146, side convex strip 15, pin DETAILED DESCRIPTION

[0035] Please refer to Figs. 1 to 4 The specific structure of the embodiment of the utility model is shown.

[0036] A stable three-layer coil transformer, comprising a framework 11, a winding frame 12, a coil and a magnetic core 13; wherein:

[0037] The framework 11 is provided with a first winding portion 111; the winding frame 12 is arranged at the upper end of the first winding portion 111, the winding frame 12 has a winding column 121, the center position of the winding column 121 is provided with a partition 128 to divide the winding column 121 into a second winding portion 122 and a third winding portion 123 arranged in an upper and lower spacing mode, the coil is provided with three and arranged on the first winding portion 111, the second winding portion 122 and the third winding portion 123 respectively;

[0038] The magnetic core 13 is provided with two E-shaped magnetic cores 13 having a middle column (not shown in the figure), the skeleton 11 and the bobbin 12 are provided with through holes 101, the through hole 101 of the skeleton 11 is connected with the through hole 101 of the bobbin 12, and the two magnetic cores 13 are arranged in a herringbone shape. The middle column of the magnetic core 13 extends into the through hole 101 of the skeleton 11 and the through hole 101 of the bobbin 12. Specifically, the bobbin 12 includes an upper plate 124 and a lower plate 125, the winding column 121 is arranged between the upper plate 124 and the lower plate 125, the through hole 101 of the bobbin 12 is arranged on the winding column 121, and the through hole 101 of the bobbin 12 penetrates the upper plate 124 and the lower plate 125. In this way, by designing each component, the winding column is divided into a second winding part and a third winding part by a partition plate, and three coils are arranged on the first to third winding parts, so that the three coils are arranged separately, thereby realizing high-power use of the transformer, avoiding the problem of mutual influence of the three coils, reducing the leakage inductance of the transformer, ensuring the stable use of the circuit of the electronic product, thereby improving the safety performance of the electronic product, and having good usability and wide application range.

[0039] In the embodiment, the upper end of the first winding part 111 is provided with a boss 14, the boss 14 is provided with a chamber 141 with a front opening, the bobbin 12 is arranged on the chamber 141 from the front opening, the through hole 101 of the skeleton 11 penetrates the boss 14 at the upper end, the rear upper side of the boss 14 is provided with a glue inlet 142 communicated with the chamber 141 and used for glue pouring, the bobbin 12 is located in front of the glue inlet 142, and the upper plate of the bobbin 12 is provided with a recess 126 corresponding to the glue inlet at the rear end. In this way, the glue inlet is arranged to facilitate the glue pouring operation of the coil of the bobbin on the chamber, effectively protects the two coils of the chamber, thereby improving the use reliability of the two coils of the bobbin, and has strong practicability. At the same time, the arrangement of the recess is beneficial to the smoothness of the glue flowing into the chamber, and ensures the stable contact between the glue and the two coils.

[0040] Further, the chamber 141 is provided with a positioning portion 143 extending towards the winding frame, the winding frame 12 is provided with a positioning groove 127 corresponding to the positioning portion, the positioning portion 143 and the positioning groove 127 are matched and connected with each other to realize the positioning and connection of the winding frame 12 on the chamber 141, preferably, the positioning portion 143 is provided with two groups, and the two groups of positioning portions 143 are arranged on the upper end face and the lower end face of the chamber 141 respectively; correspondingly, the positioning groove 127 is provided with two groups, and the two groups of positioning grooves 127 are arranged on the upper end and the lower end of the winding frame 12 respectively, in this way, the arrangement of the positioning portion and the positioning groove is favorable for the accurate installation and positioning of the winding frame on the chamber, is favorable for the assembly and production of subsequent processes, and the arrangement of the two groups of positioning portions and the two groups of positioning grooves improves the positioning firmness of the winding frame in the chamber, thereby improving the use stability of the transformer as a whole.

[0041] Further, the lower end of the framework 11 is provided with a support portion 112 extending downwards, the support portion 112 extends horizontally, and the lower end of the framework 11 is provided with a plurality of pins 16 arranged at intervals on the front side and the rear side, and the support portion 112 is provided with two, one of which is located behind the front pin 16, and the other is located in front of the rear pin 16, in this way, the arrangement of the support portion is favorable for the support and positioning between the transformer and the PCB, and ensures the use stability of the transformer.

[0042] Preferably, the boss 14 is provided with a convex strip 144 for contacting and positioning the magnetic core, the convex strip 144 is provided with two convex strips arranged at intervals, the convex strip 144 includes an upper convex strip 145 and a side convex strip 146, the upper convex strip 145 is arranged at the upper end of the boss 14, and the side convex strip 146 is provided with two and arranged on the left side and the right side of the boss 14, and the front side and the rear side of the magnetic core 13 arranged on the boss 14 are limited on the upper convex strip 145 and the side convex strip 146; in this way, the arrangement of the convex strip is favorable for the positioning and connection of the magnetic core on the boss, and improves the production efficiency of the transformer.

[0043] The design of the utility model mainly is through the design of each component, the winding column is divided into second and third winding parts by the partition plate, and three coils are arranged on the first to third winding parts, so that the three coils are arranged separately, thereby realizing the high-power use of the transformer, avoiding the problem of mutual influence of the three coils, reducing the leakage inductance of the transformer, ensuring the circuit use stability of the electronic product, improving the safety performance of the electronic product, and being good in usability and wide in application range.

[0044] And, the setting of the glue inlet facilitates the glue pouring operation of the coil of the winding frame on the cavity, effectively protects the two coils of the cavity, thereby improving the use reliability of the two coils of the winding frame, has high practicability, meanwhile, the setting of the avoiding recess is favorable for the smoothness of the glue flowing into the cavity, guarantees the stable contact between the glue and the two coils;

[0045] Furthermore, the setting of the positioning part and the positioning groove is favorable for the accurate positioning of the winding frame in the cavity, is favorable for the assembly production of the subsequent process, the setting of the two sets of positioning parts and the two sets of positioning grooves improves the positioning firmness of the winding frame in the cavity, thereby improves the use stability of the transformer as a whole, meanwhile, the setting of the supporting part is favorable for the supporting and positioning between the transformer and the PCB, guarantees the use stability of the transformer.

[0046] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application in any way, so any slight modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment still belongs to the technical scope of the present application.

Claims

1. A transformer using a stable three-layer coil, characterized by: The utility model provides a kind of magnetic core and coil assembly, including framework, bobbin, coil and magnetic core;Wherein: the first winding part is provided on the framework;The bobbin is arranged at the upper end of first winding part, and the bobbin has winding column, the center position of winding column is provided with partition to divide winding column and be provided with the second winding part and the third winding part of upper and lower spacing arrangement, the coil is provided with three and is arranged on the first winding part, the second winding part and the third winding part respectively;The magnetic core is provided with two, and the magnetic core is E-shaped, and the magnetic core has middle column, the framework and bobbin are all provided with through hole that passes through up and down, the through hole upper end of framework penetrates first winding part, and the through hole of framework and the through hole of bobbin are interconnected, and two magnetic cores are oppositely arranged to form a day-shaped structure, and the middle column of magnetic core respectively extends into the through hole of framework and the through hole of bobbin.

2. A tri-filar coil transformer of the type defined in claim 1, characterised in that: The upper end of the first winding part is provided with a boss, a chamber with a front opening is formed in the boss, the bobbin is arranged on the chamber from the front opening, and the through hole of the framework penetrates the boss at the upper end.

3. A tri-filar coil transformer of the type defined in claim 2, characterised in that: The rear end of the boss is provided with a glue inlet connected to the chamber and used for filling glue, and the bobbin is located in front of the glue inlet.

4. A tri-filar coil transformer of the type defined in claim 3, characterised in that: The rear end of the bobbin is provided with a recess corresponding to the glue inlet.

5. A tri-filar coil transformer of the type defined in claim 2, characterized in that: The chamber is provided with a positioning part extending towards the bobbin, and the bobbin is provided with a positioning groove corresponding to the positioning part.

6. A tri-filar coil transformer of the type defined in claim 5, characterised in that: The positioning part is provided with two groups, and the two groups of positioning parts are arranged on the upper end surface and the lower end surface of the chamber respectively.

7. A stable three-layer coil transformer according to claim 1, characterized in that: The bobbin includes an upper plate and a lower plate, the winding column is arranged between the upper plate and the lower plate, the through hole of the bobbin is arranged on the winding column, and the through hole of the bobbin penetrates the upper plate and the lower plate.

8. A stable three-layer coil transformer according to claim 1, characterized in that: The lower end of the framework is provided with a support extending downward.

Images