Magnetic core structure and transformer

Abstract

The utility model discloses a magnetic core structure and a transformer. The magnetic core structure comprises a first magnetic core, a second magnetic core, a circuit board and a buckling piece, the buckling piece is provided with a mounting cavity and a buckling end, the first magnetic core, the circuit board and the second magnetic core are sequentially arranged in the mounting cavity, the first magnetic core penetrates through the circuit board and abuts against the second magnetic core, and the buckling end is connected with the circuit board. The buckling end is buckled on the second magnetic core; the transformer comprises the magnetic core structure. The magnetic core is applied to the technical field of magnetic cores.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic core, especially a kind of magnetic core structure and transformer. BACKGROUND

[0002] Transformer is the core component of energy conversion, in traditional winding transformer, inductance is the largest element on the whole circuit board size, miniaturization, intelligentization and high performance price ratio become the development direction of product, which puts forward the simple and small requirement to electronic transformer and inductor, market makes the product of planarization magnetic device to magnetic device with the low cost and high flatness advantage of direct wiring instead of coil using motherboard PCB line, but due to the size of motherboard PCB is very large, when assembling with magnetic core, it needs to make complex tool fixture and complex post-processing process.

[0003] At present, magnetic core and magnetic core, magnetic core and PCB are fixed using glue, part of magnetic core is fixed on motherboard PCB when magnetic core structure is assembled, due to the weight of magnetic core, it may fall during reflow soldering process of motherboard PCB;Moreover, when assembling another part of magnetic core, very complex tool fixture is needed to achieve alignment and close contact with part of magnetic core fixed on motherboard PCB, otherwise it will affect the normal work of transformer;In addition, due to long-term vibration and temperature impact during the use of the whole device, the fixing ability of glue will decrease after aging, which may cause the risk of magnetic core falling off. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems of overcoming the prior art, and the first purpose is to provide a magnetic core structure with simple structure, stable structure and simplified assembly steps.

[0005] The second purpose of the utility model is to provide a transformer with simple structure, stable structure and simplified assembly steps.

[0006] The utility model adopts the technical scheme that the magnetic core structure includes first magnetic core, second magnetic core, circuit board and buckling piece, the buckling piece has mounting cavity and buckling end, the first magnetic core, the circuit board and the second magnetic core are sequentially arranged in the mounting cavity, the first magnetic core passes through the circuit board and abuts against the second magnetic core, and the buckling end is buckled on the second magnetic core.

[0007] Further, the buckling piece includes U-shaped buckle, the mounting cavity is formed in the U-shaped buckle, and the number of buckling ends is two, and the two buckling ends are respectively formed in the two ends of the U-shaped buckle.

[0008] Further, the first magnetic core is arranged in the mounting cavity through the glue layer or tolerance fit.

[0009] Further, the first magnetic core is provided with a positioning shaft, the circuit board is provided with a positioning hole matched with the positioning shaft, and the upper end of the positioning shaft abuts against the second magnetic core.

[0010] Further, the circuit board is arranged in the mounting cavity through a glue layer or a tolerance fit.

[0011] Further, the circuit board is provided with a mounting hole, the first magnetic core is provided with a connecting block, the connecting block abuts against the inner side of the buckling member, the buckling end and the connecting block both pass through the mounting hole from bottom to top, and the upper end and the lower end of the second magnetic core abut against the lower end of the buckling end and the upper end of the connecting block, respectively.

[0012] Further, the mounting hole, the connecting block and the buckling end are two in number, and the two mounting holes are located on the two sides of the positioning hole, respectively.

[0013] Further, the bottom of the mounting cavity is provided with two limiting blocks, and the two limiting blocks abut against the two sides of the first magnetic core, respectively.

[0014] Further, the two sides of the buckling member are both provided with an insert, the circuit board is provided with two insertion holes, and the two inserts are matched with the two insertion holes, respectively.

[0015] In addition, the utility model also provides a transformer which comprises the magnetic core structure.

[0016] The utility model has the advantages of:

[0017] Compared with the prior art, in the utility model, when assembling, the first magnetic core is assembled into the mounting cavity of the buckling member first, the circuit board is further assembled in the mounting cavity and arranged on the first magnetic core, the second magnetic core is further arranged above the circuit board and abuts against the first magnetic core, finally, the buckling end is buckled on the second magnetic core, and after assembly, the assembly strength can be enhanced by using glue, therefore, the magnetic core structure can be assembled step by step, the magnetic core structure is simple to install, does not need to use a complex tool clamp to assist positioning, and the assembly is fully automatic; moreover, the structure is simple, reliable fixing can be realized through the buckling member, the component production is fully automatic, and the magnetic core structure has the advantages of simple structure, stable structure and simplified assembly steps. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0019] Figure 1 is a three-dimensional structure schematic diagram of the present application;

[0020] Figure 2 is a plane structure schematic diagram of the present application;

[0021] Figure 3 is an exploded structure schematic diagram of the present application;

[0022] Figure 4 is a three-dimensional structure schematic diagram of the first magnetic core of the present application;

[0023] Figure 5 is a three-dimensional structure schematic diagram of the clamping piece of the present application.

[0024] The signs are as follows:

[0025] 1, the first magnetic core; 2, the second magnetic core; 3, the circuit board; 5, the clamping piece; 6, the mounting cavity; 7, the clamping end; 8, the U-shaped buckle; 9, the positioning shaft; 10, the positioning hole; 11, the mounting hole; 12, the connecting block; 13, the limiting block; 15, the plug-in component; 16, the jack.

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] It should be noted that all directional indications in the embodiments of the present application, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figures 1 to 5 As shown, in this embodiment, the magnetic core structure includes a first magnetic core 1, a second magnetic core 2, a circuit board 3, and a fastening member 5. The fastening member 5 has a mounting cavity 6 and a fastening end 7. The first magnetic core 1, the circuit board 3, and the second magnetic core 2 are sequentially arranged in the mounting cavity 6. The first magnetic core 1 passes through the circuit board 3 and abuts against the second magnetic core 2. The fastening end 7 fastens onto the second magnetic core 2.

[0031] Compared with the shortcomings of the prior art, in this utility model, during assembly, the first magnetic core 1 is first assembled into the mounting cavity 6 of the fastening member 5, the circuit board 3 is further assembled into the mounting cavity 6 and placed on the first magnetic core 1, the second magnetic core 2 is further placed above the circuit board 3 and abuts against the first magnetic core 1, and finally, the fastening end 7 is fastened to the second magnetic core 2. After assembly, glue can be used to enhance the assembly strength. Therefore, the magnetic core structure can achieve step-by-step assembly, simplifying the installation of the magnetic core structure and eliminating the need for complex tooling fixtures to assist in positioning, thus making the assembly fully automated. Moreover, the structure is simple, and a reliable fixing method can be achieved through the fastening member 5, making the component production fully automated. Therefore, the magnetic core structure has the advantages of simple structure, stable structure and simplified assembly steps.

[0032] In some embodiments, the fastening member 5 includes a U-shaped buckle 8, the mounting cavity 6 is formed in the U-shaped buckle 8, and the number of fastening ends 7 is two, with the two fastening ends 7 respectively formed at the two ends of the U-shaped buckle 8.

[0033] In some embodiments, the first magnetic core 1 is disposed in the mounting cavity 6 by means of an adhesive layer or tolerance fit.

[0034] In some embodiments, the first magnetic core 1 is provided with a positioning shaft 9, and the circuit board 3 is provided with a positioning hole 10 that cooperates with the positioning shaft 9. The upper end of the positioning shaft 9 abuts against the second magnetic core 2.

[0035] In some embodiments, the circuit board 3 is disposed in the mounting cavity 6 by means of an adhesive layer or tolerance fit.

[0036] In some embodiments, the circuit board 3 is provided with mounting holes 11, the first magnetic core 1 is provided with connecting blocks 12, the connecting blocks 12 abut the inner side of the buckling part 5, the buckling end 7 and the connecting block 12 both pass through the mounting hole 11 from bottom to top, and the upper end and the lower end of the second magnetic core 2 abut the lower end of the buckling end 7 and the upper end of the connecting block 12 respectively; the number of the mounting hole 11, the connecting block 12 and the buckling end 7 is two, and the two mounting holes 11 are respectively located on the two sides of the positioning hole 10. Specifically, when the circuit board 3 is assembled to abut the first magnetic core 1, the buckling end 7 and the connecting block 12 both pass through the mounting hole 11 from bottom to top, at this time, the buckling end 7 and the connecting block 12 also have a buckling space, the second magnetic core 2 can be buckled into the buckling space, so that the buckling end 7 can be buckled on the second magnetic core 2 to complete the assembly.

[0037] From the above, by abutting the connecting block 12 to the inner side of the buckling part 5, the buckling end 7 and the connecting block 12 both pass through the mounting hole 11 from bottom to top, and the upper end and the lower end of the second magnetic core 2 abut the lower end of the buckling end 7 and the upper end of the connecting block 12 respectively, the first magnetic core 1 can be well aligned with the second magnetic core 2, and tightly contacted without being easy to loosen.

[0038] In some embodiments, the bottom of the mounting cavity 6 is provided with two limiting blocks 13, and the two limiting blocks 13 abut the two sides of the first magnetic core 1 respectively. Specifically, the first magnetic core 1 is limited by the two limiting blocks 13 to ensure the structural stability of the first magnetic core 1 after assembly.

[0039] In some embodiments, the two sides of the buckling part 5 are provided with two inserts 15, and the circuit board 3 is provided with two insertion holes 16, and the two inserts 15 are matched with the two insertion holes 16 respectively.

[0040] The assembly process of the magnetic core structure is as follows:

[0041] The first magnetic core 1 is arranged in the mounting cavity 6 of the buckling part 5 by means of a glue layer or a tolerance fit; further, the circuit board 3 is placed on the first magnetic core 1, and the buckling end 7 of the buckling part 5 and the connecting block 12 on the first magnetic core 1 both pass through the mounting hole 11 of the circuit board 3 from bottom to top, wherein the circuit board 3 is arranged in the mounting cavity 6 of the buckling part 5 by means of a glue layer or a tolerance fit; further, the second magnetic core 2 is assembled on the circuit board 3 and abuts the first magnetic core 1, at this time, the upper end and the lower end of the second magnetic core 2 abut the lower end of the buckling end 7 and the upper end of the connecting block 12 respectively, so as to be buckled on the second magnetic core 2 by the buckling end 7; after assembly, glue can be used to enhance the assembly strength.

[0042] In addition, the utility model still provides a kind of transformer, it includes the magnetic core structure of the described. Specifically, the specific structure of the described transformer refers to the above embodiment, since the transformer has adopted all the technical solutions of the above all embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiment, here will not be repeated.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the inventive concept of the utility model, using the utility model specification and the contents of the drawings, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A magnetic core structure, characterized by: It includes a first magnetic core (1), a second magnetic core (2), a circuit board (3) and a buckling piece (5), the buckling piece (5) has a mounting cavity (6) and a buckling end (7), the first magnetic core (1), the circuit board (3) and the second magnetic core (2) are sequentially arranged in the mounting cavity (6), the first magnetic core (1) passes through the circuit board (3) and abuts against the second magnetic core (2), and the buckling end (7) is buckled on the second magnetic core (2).

2. The magnetic core structure of claim 1, wherein: The buckling piece (5) comprises a U-shaped buckle (8), the mounting cavity (6) is formed in the U-shaped buckle (8), and the number of the buckling end (7) is two, and the two buckling ends (7) are respectively formed at two ends of the U-shaped buckle (8).

3. The magnetic core structure of claim 1, wherein: The first magnetic core (1) is arranged in the mounting cavity (6) through a glue layer or a tolerance fit.

4. The magnetic core structure of claim 1, wherein: The first magnetic core (1) is provided with a positioning shaft (9), the circuit board (3) is provided with a positioning hole (10) matched with the positioning shaft (9), and the upper end of the positioning shaft (9) abuts against the second magnetic core (2).

5. The magnetic core structure of claim 1, wherein: The circuit board (3) is arranged in the mounting cavity (6) through a glue layer or a tolerance fit.

6. The magnetic core structure of claim 4, wherein: The circuit board (3) is provided with a mounting hole (11), the first magnetic core (1) is provided with a connecting block (12), the connecting block (12) abuts against the inner side of the buckling piece (5), the buckling end (7) and the connecting block (12) all pass through the mounting hole (11) from bottom to top, and the upper end and the lower end of the second magnetic core (2) abut against the lower end of the buckling end (7) and the upper end of the connecting block (12) respectively.

7. The magnetic core structure of claim 6, wherein: The number of the mounting hole (11), the connecting block (12) and the buckling end (7) is two, and the two mounting holes (11) are located on the two sides of the positioning hole (10) respectively.

8. The magnetic core structure of claim 1, wherein: The bottom of the mounting cavity (6) is provided with two limiting blocks (13), and the two limiting blocks (13) abut against the two sides of the first magnetic core (1) respectively.

9. The magnetic core structure of claim 1, wherein: Both sides of the buckling piece (5) are provided with an insert (15), and the circuit board (3) is provided with two insertion holes (16), and the two inserts (15) are matched with the two insertion holes (16) respectively.

10. A transformer characterized by: It comprises the magnetic core structure according to any one of claims 1-9. It comprises the magnetic core structure according to any one of claims 1-9.

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