Differential mode magnetic core fixing assembly and filter

Abstract

The utility model discloses a differential mode magnetic core fixing assembly and a filter. The differential mode magnetic core fixing assembly comprises a shell and a differential mode magnetic core. The first concave part and the second concave part abut against the first limiting part and the second limiting part respectively so that the differential mode magnetic core can be limited in the first direction and the third direction. The two sides of the differential mode magnetic core are attached to the first supporting plate and the second supporting plate respectively so as to be limited in the second direction. Any two of the first direction, the second direction and the third direction are perpendicular to each other. The filter comprises the differential mode magnetic core fixing assembly. According to the differential-mode magnetic core fixing assembly and the filter, the differential-mode magnetic core is fixed relative to the shell, the situation that the common-mode magnetic core is impacted or rubbed by vibration of the differential-mode magnetic core, so that the stress sensitivity of the common-mode magnetic core made of a nanocrystalline material is attenuated or broken is avoided, and the probability that the function of a filter inductor fails is reduced.

Description

Technical Field

[0001] This application relates to the technical field of filters, and particularly to a differential-mode magnetic core fixing component and a filter. Background Art

[0002] Differential-common mode filter inductors are electronic components used in filter circuits. Differential-common mode magnetic cores can effectively suppress noise and improve the filtering effect, and are widely used in the field of filters for new energy vehicles. Among them, the common-mode material is nanocrystalline, which has characteristics such as high magnetic permeability, low loss, and anti-high-frequency interference, and is relatively sensitive to stress and fragile. The differential-mode magnetic core material composition is iron-silicon or iron-silicon-aluminum, with a relatively large hardness.

[0003] With the increasing requirements for the filtering performance of filter inductors in new energy vehicles, the size of differential-common mode filter inductors has gradually increased. Most of the existing designs use bonding to fix the differential and common-mode magnetic cores. When the product is applied to new energy vehicles, in a vibrating environment, the differential-mode magnetic core will impact or rub against the common-mode magnetic core, resulting in stress-induced attenuation or fragmentation of the common-mode magnetic core made of nanocrystalline material, thus causing the filter inductor function to fail. Summary of the Invention

[0004] The purpose of the solution of this application is to provide a differential-mode magnetic core fixing component and a filter to solve the problems existing in the prior art, realize the fixing of the differential-mode magnetic core relative to the housing, avoid the differential-mode magnetic core vibrating, impacting or rubbing against the common-mode magnetic core, resulting in stress-induced attenuation or fragmentation of the common-mode magnetic core made of nanocrystalline material, and reduce the probability of filter inductor function failure.

[0005] A differential-mode magnetic core fixing component provided by the technical solution of this application includes a housing and a differential-mode magnetic core located inside the housing; the housing includes a first limiting wall and a second limiting wall oppositely arranged in a first direction, the first limiting wall and the second limiting wall are respectively provided with a first limiting portion and a second limiting portion, and a first support plate and a second support plate oppositely arranged in a second direction are provided between the first limiting wall and the second limiting wall; the differential-mode magnetic core is used to provide differential-mode inductance, the differential-mode magnetic core includes a first mounting end and a second mounting end oppositely arranged in the first direction, a first concave portion extending simultaneously in the first direction and a third direction is provided on the end face of the first mounting end, and a second concave portion extending jointly in the first direction and the third direction is provided on the end face of the second mounting end; the first concave portion and the second concave portion are respectively abutted against the first limiting portion and the second limiting portion, so that the differential-mode magnetic core is limited in the first direction and the third direction; the two opposite sides of the differential-mode magnetic core are respectively defined on the first support plate and the second support plate to be limited in the second direction; among the first direction, the second direction and the third direction, any two directions are perpendicular to each other.

[0006] Optionally, the differential-mode magnetic core fixing assembly further includes a common-mode magnetic core for providing a common-mode inductance. The common-mode magnetic core is located inside the housing. The common-mode magnetic core is provided with a receiving cavity, and the differential-mode magnetic core is located in the receiving cavity. Both ends of the common-mode magnetic core are respectively defined on the first limiting wall and the second limiting wall along a first direction, and the outer side surface of the common-mode magnetic core is defined on the inner wall surface of the housing to limit the common-mode magnetic core along a second direction and a third direction.

[0007] Optionally, the first support plate and the second support plate are respectively defined on two opposite inner walls of the receiving cavity to limit the common-mode magnetic core along the second direction.

[0008] Optionally, the housing includes a receiving shell and a cover body that are buckled together. The first limiting wall is located on the end wall of the receiving shell, and the second limiting wall is located on the end wall of the cover body.

[0009] Optionally, at least one of the first recessed portion and the second recessed portion includes a first limiting inclined surface and a second limiting inclined surface, which are respectively located on two sides of the end surface of the first mounting end that are opposite to each other along the third direction. At least one of the first limiting portion and the second limiting portion includes a first limiting block and a second limiting block. Both the first limiting inclined surface and the second limiting inclined surface are limited between the first limiting block and the second limiting block. The first limiting inclined surface is fitted on the first limiting block, and the second limiting inclined surface is fitted on the second limiting block.

[0010] Optionally, at least one of the first limiting block and the second limiting block includes a first sub-block and a second sub-block arranged along the second direction.

[0011] Optionally, both the first support plate and the second support plate are mounted on the first limiting wall. A first support opening is provided on the end surface of the first support plate facing the cover body, and a second support opening is provided on the end surface of the second support plate facing the cover body. The cover body is provided with a first support block and a second support block that are opposite to each other along the second direction. The first support block is mounted in the first support opening, and the second support block is mounted in the second support opening.

[0012] Optionally, support ribs are provided on the inner surfaces of both the first support plate and the second support plate. Both sides of the differential-mode magnetic core that are opposite to each other along the second direction are abutted against the support ribs.

[0013] Optionally, at least part of the housing is made of polyphenylene sulfide material.

[0014] A filter provided by the technical solution of the present application includes the differential-mode magnetic core fixing assembly described in any one of the above.

[0015] Adopting the above technical solution, the following beneficial effects are achieved:

[0016] For the differential-mode magnetic core fixing component and the filter provided in this application, the first recess on the first mounting end of the differential-mode magnetic core extends simultaneously in the first direction and the third direction, and the second recess on the second mounting end extends simultaneously in the first direction and the third direction, and the first recess and the second recess of the differential-mode magnetic core are respectively abutted against the first limiting portion and the second limiting portion of the housing so that the differential-mode magnetic core is limited in the first direction and the third direction. The differential-mode magnetic core is respectively defined on both sides opposite to each other in the second direction by the first support plate and the second support plate provided on the housing, so as to limit the differential-mode magnetic core in the second direction. The differential-mode magnetic core is limited in three directions where any two directions are perpendicular to each other, realizing the fixation of the differential-mode magnetic core relative to the housing, avoiding the differential-mode magnetic core vibrating, impacting or rubbing against the common-mode magnetic core, resulting in the stress inductance attenuation or fragmentation of the common-mode magnetic core made of nanocrystalline material, and reducing the probability of the filter inductance function failure. Description of the Drawings

[0017] Figure 1 Schematic structural diagram of the differential-mode magnetic core in an embodiment of this application;

[0018] Figure 2 Schematic structural diagram of the differential-mode magnetic core fixing component in an embodiment of this application;

[0019] Figure 3 Schematic structural diagram of the cover body in an embodiment of this application;

[0020] Figure 4 Schematic structural diagram of the accommodating shell in an embodiment of this application;

[0021] Figure 5 Schematic structural diagram of the differential-mode magnetic core fixing component in an embodiment of this application;

[0022] Figure 6 Schematic structural diagram of the cover body in an embodiment of this application.

[0023] Reference Numerals in the Drawings

[0024] 1 - Housing;

[0025] 2 - Accommodating shell, 20 - First limiting wall, 21 - First support plate, 22 - Second support plate, 23 - Support rib, 25 - First support opening, 24 - Second support opening;

[0026] 3 - Cover body, 30 - Second limiting wall, 31 - First support block, 32 - Second support block;

[0027] 4 - differential - mode magnetic core, 40 - first mounting end, 41 - first recess, 42 - second mounting end, 43 - second recess, 44 - first limiting inclined surface, 45 - second limiting inclined surface;

[0028] 5 - common - mode magnetic core, 50 - accommodating cavity;

[0029] 60 - first limiting block, 61 - second limiting block, 62 - first sub - block, 63 - second sub - block. Detailed implementation manners

[0030] The following further illustrates the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0031] It is easy to understand that according to the technical solution of the present invention, under the condition of not changing the essential spirit of the present invention, there are various structural ways and implementation ways that can be mutually replaced by those of ordinary skill in the art. Therefore, the following detailed implementation manners and the accompanying drawings are only exemplary illustrations of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the invention.

[0032] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. They are relative concepts, and thus may change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0033] The differential - mode magnetic - core fixing assembly provided in this application includes: a differential - mode magnetic core 4 and a housing 1.

[0034] Please refer to Figure 1 , the differential - mode magnetic core 4 is used to provide differential - mode inductance. The differential - mode magnetic core 4 includes a first mounting end 40 and a second mounting end 42 that are oppositely arranged along a first direction (which may be the length direction of the differential - mode magnetic core 4). The end face of the first mounting end 40 is provided with a first recess 41 extending in a third direction (which may be the height direction of the differential - mode magnetic core 4), and the end face of the second mounting end 42 is provided with a second recess 43 extending in the third direction.

[0035] As Figures 3 to 4 shown, the housing 1 includes a first limiting portion and a second limiting portion that are oppositely arranged along the first direction, and a first support plate 21 and a second support plate 22 that are oppositely arranged along a second direction (which may be the width direction of the differential - mode magnetic core 4).

[0036] The differential-mode magnetic core 4 is used to provide differential-mode inductance. The differential-mode magnetic core 4 includes a first mounting end 40 and a second mounting end 42 that are oppositely arranged in a first direction. A first recess 41 extending in both the first direction and a third direction is provided on the end face of the first mounting end 40, and a second recess 43 extending in both the first direction and the third direction is provided on the end face of the second mounting end 42.

[0037] The first recess 41 and the second recess 43 are respectively abutted against the first limiting portion and the second limiting portion so that the differential-mode magnetic core 4 is limited in the first direction and the third direction; two opposite sides of the differential-mode magnetic core 4 are respectively defined on the first support plate 21 and the second support plate 22 (by glue bonding) to be limited in a second direction.

[0038] The first recess 41 in the embodiment of the present application may be a "V"-shaped opening, a "U"-shaped opening, or an "∠"-shaped opening formed on the end face of the first mounting end 40. The opening has a limiting surface extending simultaneously in the first direction and the third direction. The first limiting portion is fitted and embedded in the opening of the first mounting end 40 to limit the differential-mode magnetic core 4 in the first direction and the third direction.

[0039] The second recess 43 in the embodiment of the present application may be a "V"-shaped opening, a "U"-shaped opening, or an "∠"-shaped opening formed on the end face of the second mounting end 42. The opening has a limiting surface extending simultaneously in the first direction and the third direction. The second limiting portion is fitted and embedded in the opening of the second mounting end 42 to limit the differential-mode magnetic core 4 in the first direction and the third direction.

[0040] Among the first direction, the second direction, and the third direction (which may be the height direction of the differential-mode magnetic core 4), any two directions are perpendicular to each other. The first direction, the second direction, and the third direction in the embodiment of the present application may respectively correspond to the directions of the X-axis, the Y-axis, and the Z-axis in the coordinate system. Specifically, the first direction is the length direction of the differential-mode magnetic core 4, the second direction is the width direction of the differential-mode magnetic core 4, and the third direction is the height direction of the differential-mode magnetic core 4. The above three directions can be transformed.

[0041] The differential-mode magnetic core fixing assembly provided by the embodiment of the present application is configured such that the first recess 41 on the first mounting end 40 of the differential-mode magnetic core 4 extends simultaneously in the first direction and the third direction, and the second recess 43 on the second mounting end 42 extends simultaneously in the first direction and the third direction. The first recess 41 and the second recess 43 of the differential-mode magnetic core 4 are respectively abutted against the first limiting portion and the second limiting portion so that the differential-mode magnetic core 4 is limited in the first direction and the third direction. The first support plate 21 and the second support plate 22 provided on the housing 1 respectively define opposite sides of the differential-mode magnetic core 4 in the second direction, so as to limit the differential-mode magnetic core 4 in the second direction. The differential-mode magnetic core 4 is limited in three mutually perpendicular directions, realizing the fixation of the differential-mode magnetic core 4 relative to the housing 1, and avoiding the differential-mode magnetic core 4 vibrating, impacting or rubbing against the common-mode magnetic core 5, which may cause stress-induced attenuation or fragmentation of the nanocrystalline common-mode magnetic core 5, and reducing the probability of failure of the filter inductor function.

[0042] As an alternative embodiment, the differential-mode magnetic core fixing assembly further includes a common-mode magnetic core 5 for providing a common-mode inductance. The common-mode magnetic core 5 is located inside the housing 1, and the common-mode magnetic core 5 is provided with a receiving cavity 50, and the differential-mode magnetic core 4 is located in the receiving cavity 50.

[0043] As an alternative embodiment, the first limiting portion and the second limiting portion are respectively located on the first limiting wall 20 and the second limiting wall 30 which are oppositely arranged on the housing 1. The two ends of the common-mode magnetic core 5 are respectively defined on the first limiting wall 20 and the second limiting wall 30 in the first direction (such as by glue bonding) so as to be limited in the first direction. The two first outer wall surfaces of the common-mode magnetic core 5 oppositely arranged in the second direction are respectively limited on the first inner wall surfaces oppositely arranged in the second direction inside the housing 1 by glue bonding to limit the common-mode magnetic core 5 in the second direction. The two second outer wall surfaces of the common-mode magnetic core 5 oppositely arranged in the third direction are respectively limited on the second inner wall surfaces oppositely arranged in the third direction inside the housing 1 by glue bonding to limit the common-mode magnetic core 5 in the third direction. The glue used in the embodiment of the present application can be silicone rubber, which improves the connection stability between the common-mode magnetic core 5 and the housing 1.

[0044] As an alternative embodiment, the first support plate 21 and the second support plate 22 respectively define two third inner wall surfaces oppositely arranged in the second direction of the receiving cavity 50 to limit the common-mode magnetic core 5 in the second direction. The first support plate 21 and the second support plate 22 not only play a role in limiting the common-mode magnetic core 5 from the inside, but also play a role in isolating the differential-mode magnetic core 4 and the common-mode magnetic core 5, so as to reduce the impact and friction of the differential-mode magnetic core 4 on the common-mode magnetic core 5 in a vibrating environment.

[0045] As an alternative embodiment, the housing 1 includes a receiving housing 2 and a cover 3 that are snap - connected. The first limiting wall 20 is located on the end wall of the receiving housing 2, and the second limiting wall 30 is located on the end wall of the cover 3. In the embodiment of the present application, the housing 1 is split into the receiving housing 2 and the cover 3. During assembly, the common - mode core 5 is placed into the receiving housing 2, and then the differential - mode core 4 is placed into the receiving housing 2 and the cover 3 is assembled, as shown in Figure 1 and Figure 4 . The side wall of the receiving housing 2 at the opening can be installed in the opening of the cover 3 by means of snap - connection, bonding, or interference fit. Partial limitation of the differential - mode core 4 and the common - mode core 5 is achieved through the bonding silicone coated on the receiving housing 2 and the cover 3.

[0046] As an alternative embodiment, in at least one of the first recess 41 and the second recess 43, there are included a first limiting inclined surface 44 and a second limiting inclined surface 45. The first limiting inclined surface 44 and the second limiting inclined surface 45 are respectively located on two opposite sides of the end surface of the first mounting end 40 along the third direction; in at least one of the first limiting portion and the second limiting portion, there are included a first limiting block 60 and a second limiting block 61. Both the first limiting inclined surface 44 and the second limiting inclined surface 45 are limited between the first limiting block 60 and the second limiting block 61. The first limiting inclined surface 44 is attached to the first limiting block 60, and the second limiting inclined surface 45 is attached to the second limiting block 61. Both the first limiting block 60 and the second limiting block 61 can be wedge - shaped blocks, as shown in Figure 1 、 Figure 2 and Figure 5 . Both the first recess 41 and the second recess 43 include the first limiting inclined surface 44 and the second limiting inclined surface 45. The first limiting block 60 is limited outside the first limiting inclined surface 44 by bonding, and the second limiting block 61 is limited outside the second limiting inclined surface 45 by bonding. The first limiting wall 20 is limited to the first mounting end 40 by bonding, and the second limiting wall 30 is limited to the second mounting end 42 by bonding, so as to achieve the function of limiting the differential - mode core 4 in the first direction and the third direction and improve the positioning effect of the differential - mode core 4.

[0047] As an alternative embodiment, in at least one of the first limiting block 60 and the second limiting block 61, there are included a first sub - block 62 and a second sub - block 63 arranged along the second direction. When the first limiting block 60 includes the first sub - block 62 and the second sub - block 63, the first limiting inclined surface 44 is attached and abutted against the first sub - block 62 and the second sub - block 63. When the second limiting block 61 includes the first sub - block 62 and the second sub - block 63, the second limiting inclined surface 45 is attached and abutted against the first sub - block 62 and the second sub - block 63. As shown in Figures 1 to 3As shown, the first block 62 and the second block 63 can reduce the material consumption and cost, and are also beneficial to injection molding.

[0048] As an optional embodiment, the first support plate 21 and the second support plate 22 are both installed on the first limiting wall 20. A first support opening 25 is formed on the end surface of the first support plate 21 facing the cover 3, and a second support opening 24 is formed on the end surface of the second support plate 22 facing the cover 3. On the cover 3, a first support block 31 and a second support block 32 are oppositely arranged along the second direction. The first support block 31 is installed in the first support opening 25, and the second support block 32 is installed in the second support opening 24. As Figures 2 to 6 shown, both the first support block 31 and the second support block 32 are hollow and a guiding inclined surface is provided on the end wall at the opening, which plays a guiding role when the first support block 31 and the second support block 32 are installed. Both the first support block 31 and the second support block 32 are strip-shaped. The first support block 31 is installed in the first support opening 25 in an interference fit or clamping manner, and the second support block 32 is installed in the second support opening 24 in an interference fit or clamping manner, so as to support and limit the first support plate 21 and the second support plate 22 from one side of the cover 3 after the cover 3 is buckled on the accommodation shell 2, thereby enhancing the limiting effect of the first support plate 21 and the second support plate 22 on the differential-mode magnetic core 4 and the common-mode magnetic core 5, and preventing relative displacement and friction between the first support plate 21 and the second support plate 22 and the differential-mode magnetic core 4 and the common-mode magnetic core 5.

[0049] As an optional embodiment, support ribs 23 are provided on the inner surfaces of both the first support plate 21 and the second support plate 22. Both opposite sides of the differential-mode magnetic core 4 along the second direction are abutted against the support ribs 23. The support ribs 23 play a role in positioning the differential-mode magnetic core 4 after the differential-mode magnetic core 4 is installed between the first support plate 21 and the second support plate 22. Optionally, a guiding inclined surface is provided at the end of the support rib 23 facing the cover 3, so that the support ribs 23 on the first support plate 21 and the support ribs 23 on the second support plate 22 define a flared structure at the opening facing the cover 3, which plays a guiding role when the differential-mode magnetic core 4 is installed. As Figure 3 shown, there can be two support ribs 23 on both the first support plate 21 and the second support plate 22. The two support ribs 23 extend in a relatively arranged manner along the first direction, providing a good support effect on the differential-mode magnetic core 4.

[0050] As an alternative embodiment, the housing 1 is at least partially made of polyphenylene sulfide material. Polyphenylene sulfide (PPS) has relatively high strength and hardness, can resist the impact and friction of the differential-mode core 4 in a vibration environment, and improve the protection effect on the common-mode core 5. The thickness of the housing 1 can be appropriately increased to further improve the protection effect of the housing 1. The housing 1 can also be made of other non-metallic materials with relatively high strength.

[0051] This application also provides a filter, including the differential-mode core fixing assembly described in any one of the above embodiments.

[0052] In the filter provided by the embodiment of this application, the first recess 41 on the first mounting end 40 of the differential-mode core 4 extends in both the first direction and the third direction, and the second recess 43 on the second mounting end 42 extends in both the first direction and the third direction, and the first recess 41 and the second recess 43 of the differential-mode core 4 are respectively abutted against the first limiting portion and the second limiting portion so that the differential-mode core 4 is limited in the first direction and the third direction. The differential-mode core 4 is limited in the second direction by the second support plates 22 provided on the housing 1 and the second support plates 22 respectively limiting the two opposite sides of the differential-mode core 4 in the second direction. The first recess 41 is in fit and limit with the first limiting portion, and the second recess 43 is in fit and limit with the second limiting portion to be limited in the third direction. The differential-mode core 4 is limited in three directions where any two directions are perpendicular to each other, realizing the fixation of the differential-mode core 4 relative to the housing 1, avoiding the differential-mode core 4 vibrating, impacting or rubbing against the common-mode core 5, resulting in the stress inductance attenuation or fragmentation of the nanocrystalline common-mode core 5, and reducing the probability of the filter inductance function failure.

[0053] According to needs, the above technical solutions can be combined to achieve the best technical effect.

[0054] The above are only the principles and preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, based on the principles of the present invention, several other variants can also be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A differential mode magnetic core fixing assembly, characterized in that: It includes a shell and a differential mode magnetic core located in the shell; The housing comprises a first limiting portion and a second limiting portion which are arranged opposite to each other along a first direction, and a first supporting plate and a second supporting plate which are arranged opposite to each other along a second direction; The differential mode magnetic core comprises a first mounting end and a second mounting end which are arranged opposite to each other along a first direction, wherein an end surface of the first mounting end is provided with a first recessed portion extending in both the first direction and the third direction, and an end surface of the second mounting end is provided with a second recessed portion extending in both the first direction and the third direction; The first recessed portion and the second recessed portion are respectively in contact with the first limiting portion and the second limiting portion, so that the differential mode magnetic core is limited in the first direction and the third direction; two oppositely arranged sides of the differential mode magnetic core are respectively limited on the first supporting plate and the second supporting plate to be limited along the second direction; Any two of the first direction, the second direction and the third direction are perpendicular to each other.

2. The differential mode magnetic core fixing assembly according to claim 1, characterized in that: The differential mode magnetic core fixing assembly also includes a common mode magnetic core, the common mode magnetic core is located in the shell, the common mode magnetic core is provided with a receiving cavity, and the differential mode magnetic core is confined in the receiving cavity.

3. The differential mode magnetic core fixing assembly according to claim 2, characterized in that: The first limiting portion and the second limiting portion are respectively located on a first limiting wall and a second limiting wall oppositely arranged on the housing, and two ends of the common mode magnetic core are respectively limited on the first limiting wall and the second limiting wall along a first direction; The two first outer wall surfaces of the common mode magnetic core which are arranged opposite to each other along the second direction are respectively limited on the first inner wall surfaces which are arranged opposite to each other along the second direction in the shell to limit the common mode magnetic core along the second direction; Two second outer wall surfaces of the common mode magnetic core that are oppositely arranged along the third direction are respectively limited on second inner wall surfaces that are oppositely arranged along the third direction in the shell to limit the common mode magnetic core along the third direction.

4. The differential mode magnetic core fixing assembly according to claim 2, characterized in that: The first support plate and the second support plate are respectively defined on two third inner wall surfaces of the accommodating cavity that are oppositely arranged along the second direction to limit the common mode magnetic core along the second direction.

5. The differential mode magnetic core fixing assembly according to claim 3, characterized in that: The shell comprises a accommodating shell and a cover body which are buckled with each other, the first limiting wall is located on the end wall of the accommodating shell, and the second limiting wall is located on the end wall of the cover body.

6. The differential mode magnetic core fixing assembly according to claim 5, characterized in that: At least one of the first recessed portion and the second recessed portion comprises a first limiting inclined surface and a second limiting inclined surface, and the first limiting inclined surface and the second limiting inclined surface are respectively located on two sides of the end surface of the first mounting end that are oppositely arranged along the third direction; At least one of the first limiting portion and the second limiting portion includes a first limiting block and a second limiting block, the first limiting slope and the second limiting slope are both limited between the first limiting block and the second limiting block, the first limiting slope is fitted on the first limiting block, and the second limiting slope is fitted on the second limiting block.

7. The differential mode magnetic core fixing assembly according to claim 6, characterized in that: At least one of the first limiting block and the second limiting block includes a first sub-block and a second sub-block arranged along the second direction.

8. The differential mode magnetic core fixing assembly according to claim 5, characterized in that: The first support plate and the second support plate are both mounted on the first limiting wall, a first support opening is formed on the end surface of the first support plate facing the cover body, and a second support opening is formed on the end surface of the second support plate facing the cover body; The cover body is provided with a first supporting block and a second supporting block which are oppositely arranged along a second direction. The first supporting block is installed at the first supporting opening, and the second supporting block is installed at the second supporting opening.

9. The differential mode magnetic core fixing assembly according to claim 5, characterized in that: Support ribs are disposed on the inner surfaces of the first support plate and the second support plate, and two sides of the differential mode magnetic core that are disposed opposite to each other along the second direction both abut against the support ribs.

10. A filter, characterized in that: The differential mode magnetic core fixing assembly comprises the differential mode magnetic core fixing assembly as described in any one of claims 1 to 9.

Images