Magnetic core device and filter

Abstract

The embodiment of the present disclosure provides a magnetic core device and a filter. The magnetic core device comprises a shell assembly and a magnetic core assembly. The shell assembly comprises a first shell; the first shell comprises a first cavity; the first cavity is pre-buried with a pre-buried part which penetrates the first cavity laterally; the first cavity forms a first mounting port and a second mounting port on both sides of the pre-buried part in the extension direction thereof. The magnetic core assembly comprises a first magnetic core part and a second magnetic core part which are annularly spliced and matched; the first magnetic core part and the second magnetic core part are respectively placed into the first cavity from the first mounting port and the second mounting port, and are spliced to form a closed loop in the axial direction of the pre-buried part. The filter comprises the magnetic core device. The first magnetic core part and the second magnetic core part can place the copper bar between the first magnetic core part and the second magnetic core part after annular splicing. Thus, the magnetic core with a large inner diameter is not required to meet the end part of the copper bar penetrating the magnetic core, thereby reducing the volume of the magnetic core used with the copper bar.

Description

Technical Field

[0001] This disclosure relates to the field of filter technology, and more particularly to magnetic core devices and filters. Background Technology

[0002] A filter is a filtering circuit composed of capacitors, inductors, and resistors. A filter can effectively filter out specific frequencies or frequencies outside of a power supply line to obtain a power signal of a specific frequency, or eliminate a power signal of a specific frequency.

[0003] Magnetic cores, as inductive components in filters, are typically used in conjunction with copper busbars, such as copper busbars passing through toroidal magnetic cores. In related technologies, the magnetic core structure of filters is usually a complete toroidal shape. However, since the dimensions of the two connecting ends of the copper busbar are larger than the dimensions of the central copper wire region, it is necessary to replace it with a toroidal magnetic core with an inner diameter larger than the dimensions of the two connecting ends of the copper busbar to meet the requirements. As a result, the overall size of the filter increases with the increase in the size of the magnetic core.

[0004] However, with technological advancements, the requirements for the overall size of filters are becoming increasingly stringent. Enlarging the magnetic core not only necessitates a sufficiently large cavity in the molded part for core installation but also significantly increases the overall size and weight of the product due to the use of a large-diameter, complete toroidal core. Furthermore, in filters, the magnetic core is mostly exposed and lacks protection. Therefore, a new magnetic core design is needed to address these drawbacks. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a magnetic core device and a filter to solve the problems in the related art.

[0006] The first aspect of this disclosure provides a magnetic core device, comprising:

[0007] A housing assembly includes a first housing; the first housing includes a first cavity; the first cavity has a pre-embedded part that laterally penetrates the first cavity; the first cavity forms a first mounting opening and a second mounting opening on both sides of the pre-embedded part in its extending direction;

[0008] The magnetic core assembly includes: a first magnetic core component and a second magnetic core component that are joined together in a ring; the first magnetic core component and the second magnetic core component are respectively inserted into the first cavity through the first mounting port and the second mounting port, and are joined together to form an axial enclosure of the embedded part.

[0009] In an embodiment of the first aspect, the cross-sectional dimensions of the embedded part are adapted to the inner ring dimensions of the magnetic core assembly after it is annularly spliced.

[0010] In an embodiment of the first aspect, the first magnetic core component is implemented as an I-shaped magnetic core, and the second magnetic core component is implemented as a U-shaped magnetic core.

[0011] In an embodiment of the first aspect, the housing assembly further includes a second housing; the second housing is detachably fitted to the second mounting port to encapsulate the magnetic core assembly within the first cavity.

[0012] In an embodiment of the first aspect, the magnetic core assembly is configured to be interference-fitted into the first cavity.

[0013] In an embodiment of the first aspect, one of the first housing or the second housing is provided with at least one elastic member; wherein, when the first housing is connected to the second housing, the elastic member forms a clamping force along the direction of the encapsulation that causes the second magnetic core component to press against the first magnetic core component.

[0014] In an embodiment of the first aspect, the second housing includes a second cavity; wherein, when the first housing is connected to the second housing, the magnetic core assembly is encapsulated in a receiving cavity formed by the first cavity and the second cavity.

[0015] In a first aspect embodiment, a first adhesive is provided at the joint between the first magnetic core component and the second magnetic core component.

[0016] In an embodiment of the first aspect, the first magnetic core component is detachably disposed on the bottom wall of the first cavity; the bottom wall of the first cavity that contacts the first magnetic core component and the side wall that contacts the second magnetic core component are both recessed with a plurality of spaced-apart filling grooves for filling with a second adhesive.

[0017] A second aspect of this disclosure provides a filter including the magnetic core device.

[0018] As described above, this disclosure provides a magnetic core device and a filter. The magnetic core device includes a housing assembly and a magnetic core assembly. The housing assembly includes a first housing; the first housing includes a first cavity; the first cavity has a pre-embedded part that laterally passes through the first cavity; the first cavity forms a first mounting port and a second mounting port on both sides of the pre-embedded part in its extending direction. The magnetic core assembly includes: a first magnetic core component and a second magnetic core component that are annularly spliced ​​together; the first magnetic core component and the second magnetic core component are respectively inserted into the first cavity from the first mounting port and the second mounting port, and spliced ​​together to enclose the pre-embedded part in the axial direction. The filter includes the magnetic core device. The advantage of the above arrangement is that the first magnetic core component and the second magnetic core component can place the copper busbar between the annularly spliced ​​first magnetic core component and the second magnetic core component. This avoids the need for a larger inner diameter magnetic core to allow the end of the copper busbar to pass through the annular magnetic core when using an integral annular magnetic core, thereby effectively reducing the volume of the magnetic core used with the copper busbar, and further reducing the overall volume of the magnetic core device and the filter. In addition, the first housing can also provide a certain degree of protection for the magnetic core component. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic diagram of the overall structure of the magnetic core device in an embodiment of this disclosure;

[0020] Figure 2 The diagram shown is a schematic diagram of the overall structure of the magnetic core device in an embodiment of this disclosure;

[0021] Figure 3 The diagram shown is a cross-sectional view of the housing assembly in an embodiment of this disclosure;

[0022] Figure 4 The diagram shown is a schematic diagram of the overall structure of the magnetic core assembly in an embodiment of this disclosure;

[0023] Figure 5 The diagram shown is a cross-sectional bottom view of the overall structure of the magnetic core device in an embodiment of this disclosure;

[0024] Figure 6 The diagram shown is an overall structural schematic of another embodiment of the magnetic core device in this disclosure.

[0025] Figure 7 The diagram shown is a cross-sectional view of another embodiment of the magnetic core device in this disclosure.

[0026] Figure 8 The diagram shown is a cross-sectional view of another embodiment of the magnetic core device in this disclosure.

[0027] Figure 9The diagram shown is a cross-sectional view of the housing assembly including a second housing in an embodiment of this disclosure.

[0028] Figure label:

[0029] 10. Housing assembly; 11. First housing; 1101. First cavity; 11011. First mounting port; 11012. Second mounting port; 1102. Wiring channel; 111. Embedded part; 1103. Filling groove; 12. Second housing; 1201. Second cavity;

[0030] 20. Magnetic core assembly; 21. First magnetic core component; 22. Second magnetic core component;

[0031] 30. Elastic components. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0033] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0035] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0036] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0037] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0038] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0039] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0040] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0041] A filter is a filtering circuit composed of capacitors, inductors, and resistors. A filter can effectively filter out specific frequencies or frequencies outside of a power supply line to obtain a power signal of a specific frequency, or eliminate a power signal of a specific frequency.

[0042] Magnetic cores, as inductive components in filters, are typically used in conjunction with copper busbars, such as copper busbars passing through toroidal magnetic cores. In related technologies, the magnetic core structure of filters is usually a complete toroidal shape. However, since the dimensions of the two connecting ends of the copper busbar are larger than the dimensions of the central copper wire region, it is necessary to replace it with a toroidal magnetic core with an inner diameter larger than the dimensions of the two connecting ends of the copper busbar to meet the requirements. As a result, the overall size of the filter increases with the increase in the size of the magnetic core.

[0043] However, with technological advancements, the requirements for the overall size of filters are becoming increasingly stringent. Enlarging the magnetic core not only necessitates a sufficiently large cavity in the molded part for core installation but also significantly increases the overall size and weight of the product due to the use of a large-diameter, complete toroidal core. Furthermore, in filters, the magnetic core is mostly exposed and lacks protection. Therefore, a new magnetic core design is needed to address these drawbacks.

[0044] Based on the above problems, in this embodiment of the present disclosure, the first and second magnetic core components, after being spliced ​​in a ring, can place the copper busbar between them. This avoids the need for a larger inner diameter magnetic core to allow the end of the copper busbar to pass through the entire ring core when using a monolithic ring magnetic core, thus effectively reducing the volume of the magnetic core used with the copper busbar, and further reducing the overall volume of the magnetic core device and the filter.

[0045] Figure 1 The diagram shown is a schematic diagram of the overall structure of the magnetic core device in an embodiment of this disclosure. Figure 2 The diagram shown is a schematic diagram of the overall structure of the magnetic core device in an embodiment of this disclosure. Figure 3 The diagram shown is a cross-sectional view of the housing assembly 10 in an embodiment of this disclosure. Figure 1 , 2In Example 3, the magnetic core device includes a housing assembly 10 and a magnetic core assembly 20. The housing assembly 10 includes a first housing 11; the first housing 11 includes a first cavity 1101; the first cavity 1101 has a pre-embedded part 111 that laterally passes through the first cavity 1101; the first cavity 1101 forms a first mounting port 11011 and a second mounting port 11012 on both sides of the pre-embedded part 111 in its extending direction. The magnetic core assembly 20 includes a first magnetic core component 21 and a second magnetic core component 22 that are annularly spliced ​​together; the first magnetic core component 21 and the second magnetic core component 22 are respectively inserted into the first cavity 1101 through the first mounting port 11011 and the second mounting port 11012, and are spliced ​​to form an axial enclosure of the pre-embedded part 111.

[0046] The advantage of the above arrangement is that the first magnetic core component 21 and the second magnetic core component 22 can be arranged in a ring-like manner to place the copper busbar between the first magnetic core component 21 and the second magnetic core component 22 after the ring splicing. This avoids the need for a larger inner diameter magnetic core to allow the end of the copper busbar to pass through the ring-like magnetic core when using an integral ring-shaped magnetic core, thereby effectively reducing the volume of the magnetic core used with the copper busbar, and further reducing the overall volume of the magnetic core device and the filter. In addition, the first housing 11 can also provide a certain degree of protection for the magnetic core assembly 20.

[0047] For example, the cross-sectional dimensions of the embedded part 111 are adapted to the inner ring dimensions of the annularly spliced ​​magnetic core assembly 20. Those skilled in the art will understand that the size of the magnetic core assembly 20 can be further reduced, thereby further reducing the overall volume of the magnetic core device.

[0048] exist Figure 2 and Figure 3 In the example, the first mounting port 11011 is formed on the side wall of the first housing 11 and is located below the embedded part 111 in the extending direction of the first cavity 1101. Exemplarily, the size of the first mounting port 11011 is adapted to the size of the first magnetic core component 21. The second mounting port 11012 is formed on the top wall of the first housing 11.

[0049] Figure 4 The diagram shown is a schematic representation of the overall structure of the magnetic core assembly 20 in an embodiment of this disclosure. Figure 4 In the example, the first magnetic core component 21 is implemented as an I-shaped magnetic core, and the second magnetic core component 22 is implemented as a U-shaped magnetic core. The I-shaped magnetic core and the U-shaped magnetic core are encapsulated in the receiving cavity in a U-shaped joint. That is, the I-shaped magnetic core and the U-shaped magnetic core form a ring with a rectangular cross-section after being joined. Correspondingly, the housing assembly 10 is also implemented as a cuboid or a cube.

[0050] As a further example, the joint between the first magnetic core component 21 and the second magnetic core component 22 is bonded with a first adhesive (not shown in the figure), such as epoxy glue. The advantage of this arrangement is that it can further improve the bonding strength between the I-shaped magnetic core and the U-shaped magnetic core, and avoid the situation where the filter cannot work properly due to the separation of the I-shaped magnetic core and the U-shaped magnetic core.

[0051] To further improve the stability between the magnetic core assembly 20 and the housing assembly 10, exemplarily, the first magnetic core component 21 is detachably disposed on the bottom wall of the first cavity 1101; the bottom wall of the first cavity 1101 that contacts the first magnetic core component 21 and the side wall that contacts the second magnetic core component 22 are both recessed with a plurality of spaced-apart filling grooves 1103 for filling with a second adhesive (not shown in the figure). Further exemplarily, the second adhesive is implemented as silicone adhesive.

[0052] Preferably, the extending direction of the filling groove 1103 on the bottom wall of the first cavity 1101 is parallel to the length direction of the first magnetic core component 21; the extending direction of the filling groove 1103 on the side wall of the first cavity 1101 is parallel to the extending direction of the first cavity 1101. The advantage of this arrangement is that when the first magnetic core component 21 is installed on the first housing 11, the filling groove 1103 retains a greater amount of second adhesive between the bottom wall of the first cavity 1101 and the bottom wall of the first magnetic core component 21, thereby improving the adhesion between the first magnetic core component 21 and the first housing 11 and reducing the possibility of separation between the first magnetic core component 21 and the first housing 11.

[0053] Figure 5 The diagram shown is a cross-sectional bottom view of the overall structure of the magnetic core device in an embodiment of this disclosure. Figure 5 In the example, the dashed line is a schematic diagram of the copper busbar and the embedded part 111 being integrally injection molded.

[0054] Figure 6 The diagram shown is a schematic diagram of the overall structure of another embodiment of the magnetic core device in this disclosure. Figure 7 The diagram shown is a cross-sectional view of another embodiment of the magnetic core device in this disclosure. Figure 8 The diagram shown is a cross-sectional view of another embodiment of the magnetic core device in this disclosure. Figure 9 The diagram shown is a cross-sectional view of the housing assembly 10 including a second housing 12 in an embodiment of this disclosure. Figure 6-9In this example, the housing assembly 10 further includes a second housing 12. The second housing 12 is detachably fitted onto the second mounting opening 11012 to encapsulate the magnetic core assembly 20 within the first cavity 1101. For example, in this embodiment, the first housing 11 includes the first cavity 1101, and the second housing 12 includes a second cavity 1201. When the first housing 11 is connected to the second housing 12 and fitted onto the second mounting opening 11012, the magnetic core assembly 20 is encapsulated within the receiving cavity formed by the first cavity 1101 and the second cavity 1201.

[0055] For example, the disassembly connection is implemented as a bolted connection or a snap-fit ​​connection.

[0056] Exemplarily, the first housing 11 and the second housing 12 are each made of a non-conductive material, such as plastic. More exemplaryly, the first housing 11 and the second housing 12 are each injection molded, and the copper busbar is integrally injection molded within the embedded part 111 of the first housing 11.

[0057] In other embodiments, the receiving cavity may also consist only of the first cavity 1101 of the first housing 11, while the second housing 12 is implemented as a cover that detachably covers the second mounting port 11012.

[0058] For example, the magnetic core assembly 20 is configured to be interference-fitted into the first cavity 1101.

[0059] Exemplarily, one of the first housing 11 or the second housing 12 is provided with at least one elastic member 30. The elastic member 30 forms a force along the direction of the package to keep the first magnetic core component 21 pressed against the second magnetic core component 22. For example, in this embodiment, the elastic member 30 is provided on the wall surface of the second housing 12 that adheres to the second magnetic core component 22. When the second housing 12 is connected to the first housing 11, the elastic member 30 first contacts the second magnetic core component 22, and as the connection between the second housing 12 and the first housing 11 increases, the elastic member 30 gradually deforms, converting the elastic force into a pressing force applied between the first magnetic core component 21 and the second magnetic core component 22. This allows the magnetic core assembly 20 to be interference-fitted into the receiving cavity. Those skilled in the art will understand that the advantage of this arrangement is that the interference fit prevents the magnetic core assembly 20 from being loose within the housing assembly 10 during use, thereby improving the performance of the magnetic core device.

[0060] In this embodiment, the elastic members 30 are implemented as a pair and arranged symmetrically. Each elastic member 30 is implemented as an elastic plate disposed on the second housing 12 and abutting against the wall of the second magnetic core component 22. For example, the second housing 12 has a clearance groove formed on its inner sidewall in the packaging direction, one end of the elastic plate is fixedly connected to the groove wall of the clearance groove, and the other end extends inward to abut against the second magnetic core component 22.

[0061] In another embodiment, the elastic element 30 may also be implemented as a spring disposed on the inner sidewall of the second housing 12 in the packaging direction and extending parallel to the packaging direction. Exemplarily, multiple springs are implemented and evenly arranged to improve the stability between the second housing 12 and the U-shaped magnetic core. Exemplarily, the springs are implemented as being made of a non-conductive material.

[0062] In another embodiment, the elastic element 30 may also be provided on the bottom wall of the first housing 11, and the implementation method is the same as the above embodiment, so it will not be described in detail here.

[0063] Those skilled in the art will understand that the magnetic core device can be installed in the following ways:

[0064] The first installation method is as follows: the first magnetic core component 21 is installed on the bottom wall of the first cavity 1101, and the second magnetic core component 22 is installed on the second housing 12. When the first housing 11 and the second housing 12 are connected, the first magnetic core component 21 gradually moves closer to the second magnetic core component 22, and after the first housing 11 and the second housing 12 are connected, the first magnetic core component 21 abuts against the second magnetic core component 22 to achieve a ring-shaped connection.

[0065] The second installation method is as follows: the first magnetic core component 21 is installed on the bottom wall of the first cavity 1101, the second magnetic core component 22 is installed in the first sub-cavity of the first housing 11, and is arranged in a ring with the first magnetic core component 21; the second housing 12 is connected to the first housing 11 and encapsulates the ring-jointed first magnetic core component 21 and the second magnetic core component 22.

[0066] exist Figure 6 and 8 In the example, at least one wiring channel 1102 for mounting copper busbars is formed on the first housing 11. Returning to... Figure 5 In the example, when the copper busbar is attached to the embedded part 111, the two connecting ends of the copper busbar extend out of the port of the wiring channel to avoid passing through the annular spliced ​​magnetic core assembly.

[0067] Another embodiment of this disclosure provides a filter including the magnetic core device.

[0068] In summary, this disclosure provides a magnetic core device and a filter. The magnetic core device includes a housing assembly and a magnetic core assembly. The housing assembly includes a first housing; the first housing includes a first cavity; the first cavity has a pre-embedded part that laterally penetrates the first cavity; the first cavity forms a first mounting port and a second mounting port on both sides of the pre-embedded part in its extending direction. The magnetic core assembly includes: a first magnetic core component and a second magnetic core component that are annularly spliced ​​together; the first magnetic core component and the second magnetic core component are respectively inserted into the first cavity through the first mounting port and the second mounting port, and spliced ​​together to enclose the pre-embedded part axially. The filter includes the magnetic core device. The advantage of the above arrangement is that the first magnetic core component and the second magnetic core component can place the copper busbar between the annularly spliced ​​first magnetic core component and the second magnetic core component. This avoids the need for a larger inner diameter magnetic core to allow the end of the copper busbar to pass through the annular magnetic core when using an integral annular magnetic core, thereby effectively reducing the volume of the magnetic core used with the copper busbar, and further reducing the overall volume of the magnetic core device and the filter. In addition, the first housing can also provide a certain degree of protection for the magnetic core component.

[0069] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A magnetic core device, characterized in that, include: The housing assembly includes a first housing; the first housing includes a first cavity; the first cavity has a pre-embedded part that laterally penetrates the first cavity; The first cavity forms a first mounting port and a second mounting port on both sides of the embedded part in its extending direction; The magnetic core assembly includes: a first magnetic core component and a second magnetic core component that are joined together in a ring shape; The first magnetic core component and the second magnetic core component are respectively inserted into the first cavity through the first mounting port and the second mounting port, and are spliced ​​together to form an axial enclosure of the embedded part.

2. The magnetic core device according to claim 1, characterized in that, The cross-sectional dimensions of the embedded part are adapted to the inner ring dimensions of the magnetic core assembly after it is assembled in a ring.

3. The magnetic core device according to claim 1, characterized in that, The first magnetic core component is implemented as an I-shaped magnetic core, and the second magnetic core component is implemented as a U-shaped magnetic core.

4. The magnetic core device according to claim 1, characterized in that, The housing assembly further includes a second housing; the second housing is detachably fitted onto the second mounting port to encapsulate the magnetic core assembly within the first cavity.

5. The magnetic core device according to claim 4, characterized in that, The magnetic core assembly is configured to be interference-fitted into the first cavity.

6. The magnetic core device according to claim 4, characterized in that, One of the first housing or the second housing is provided with at least one elastic member; wherein, when the first housing is connected to the second housing, the elastic member forms a clamping force along the direction of the encapsulation that causes the second magnetic core component to press against the first magnetic core component.

7. The magnetic core device according to claim 4, characterized in that, The second housing includes a second cavity; wherein, when the first housing is connected to the second housing, the magnetic core assembly is encapsulated in a receiving cavity formed by the first cavity and the second cavity.

8. The magnetic core device according to claim 1, characterized in that, A first adhesive is provided at the joint between the first magnetic core component and the second magnetic core component.

9. The magnetic core device according to claim 1, characterized in that, The first magnetic core component is detachably disposed on the bottom wall of the first cavity; the bottom wall of the first cavity that contacts the first magnetic core component and the side wall that contacts the second magnetic core component are both recessed with a plurality of spaced-apart filling grooves for filling with the second adhesive.

10. A filter, characterized in that, include: The magnetic core device as described in any one of claims 1-9.

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